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20250271 20 Skyward Dr Site Plan SWPPP
STORMWATER POLLUTION PREVENTION PLAN (SWPPP) FOR Skyward Drive Warehouse 20 Skyward Drive Saratoga Springs, New York February 2025 Applicant: /I � Munter Munter ENTERPRISES, INC. c��TRAC-01 881 Murray Road Middle Grove, New York 12850 Contact: Mike Munter (518) 584-6174 Prepared By: , ` Verity Engineering, D.P.C. erity P.O. Box 474 Engineer i, % y Tro , New York 12181 0 Aaron J.Vera, P.E. 094301 It is a violation of New York State Education Law Article 145 for any person, unless they are acting under the direction of a licensed professional engineer, to alter this document in any way. If a document bearing the seal of a licensed professional engineer is altered,the altering engineer shall affix to the document their seal,the notation "altered by" followed by their signature, the date of such alteration, and a specific description of the alteration. ©2025 Verity Engineering, D.P.C. Table of Contents SWPPP Certification Requirements........................................................................................................ii SWPPPCertification..............................................................................................................................iv 1.0 PROJECT BACKGROUND ...........................................................................................................1 1.1 Introduction ............................................................................................................................1 1.2 Site Characteristics.................................................................................................................1 1.2.1 Topography and Drainage Patterns.................................................................................1 1.2.2 Wetlands, Waterbodies, Ecology, and Archaeology.........................................................1 1.2.3 Soils.................................................................................................................................1 1.2.4 Existing Utilities..............................................................................................................2 2.0 EROSION AND SEDIMENT CONTROL ......................................................................................3 2.1 Construction Phasing and Sequence of Operations................................................................3 2.2 Erosion and Sediment Control Practices.................................................................................3 2.2.1 Stabilized Construction Entrance....................................................................................3 2.2.2 Concrete Washout...........................................................................................................3 2.2.3 Inlet Protection (Insert Type) ..........................................................................................3 2.2.4 Dust Control....................................................................................................................4 2.2.5 Topsoil, Seed, and Mulch ................................................................................................4 2.2.6 Silt Fence.........................................................................................................................4 2.2.7 Temporary Sediment Trap...............................................................................................4 2.2.8 Perimeter Dikes and Swales............................................................................................4 2.3 Maintenance Inspection Schedule ..........................................................................................5 2.4 Construction Chemicals, Litter, and Debris............................................................................5 2.4.1 Materials .........................................................................................................................6 2.4.2 Storage............................................................................................................................6 2.4.3 Equipment.......................................................................................................................8 2.5 Industrial Discharges..............................................................................................................8 2.6 Non-Conforming Elements......................................................................................................8 3.0 STORMWATER MANAGEMENT PRACTICES.............................................................................9 3.1 Methodology............................................................................................................................9 3.2 Pre-Development Drainage Conditions...................................................................................9 3.3 Post-Development Drainage Conditions................................................................................10 3.4 Pre-Post Development Comparison.......................................................................................10 3.5 Stormwater Management Planning ......................................................................................11 3.5.1 Site Planning.................................................................................................................11 3.5.2 Determine Water Quality Treatment Volume (WQv) .....................................................12 3.5.3 Runoff Reduction (RRv) Techniques..............................................................................12 3.5.4 Minimum RRv Required.................................................................................................12 3.5.5 Standard Stormwater Management Practices...............................................................13 3.6 Non-Conforming Elements....................................................................................................14 3.7 Operations and Maintenance................................................................................................14 3.8 Summary...............................................................................................................................15 Appendices AppendixA.........................................................................................................................Location Map Appendix B ................................................................... Notice of Intent/Acknowledgement of Coverage Appendix C...........................................................................................................MS4 Acceptance Form Appendix D......................................................................................SPDES General Permit GP-0-25-001 Appendix E ..................................................................................................NYS OPRHP Documentation Appendix F ....................................................................................................USDA& NCRS Soil Survey AppendixG.......................................................................................................................Drainage Maps Appendix H.............................. NYSDEC Green Infrastructure Worksheets and Additional Calculations Appendix I .......................................................................Pre-Development Water Quantity Calculations Appendix J .....................................................................Post-Development Water Quantity Calculations Appendix K........................................................................................................Weekly Inspection Form Appendix L...................................................... Post-Construction Operation and Maintenance Checklist Appendix M ..........................................................................................Environmental Assessment Form AppendixN............................................................................................................Notice of Termination Appendix 0..................................................................................... Erosion and Sediment Control Plans Stormwater Pollution Prevention Plan(SWPPP) i 20 Skyward Drive February 2025 SWPPP Certification Requirements Definitions: For additional definitions of terms and phrases used in this document refer to Pages 55-63 of GP-0-25-001 SPDES General Permit for Stormwater Discharges from Construction Activity. GP-0-25-001 is included as Appendix D of this document. Owner or Operator - the person, persons, or legal entity which owns or leases the property on which the construction activity is occurring; an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications; and/or an entity that has day-to-day operational control of those activities at a project that are necessary to ensure compliance with the permit requirements. Qualified Inspector - a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder or other NYSDEC endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of NYSDEC endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. Note: Inspections of any SMPs that include structural components, such as a dam for an impoundment, shall be performed by a licensed Professional Engineer. Qualified Professional - a person that is knowledgeable in the principles and practices of stormwater management and treatment, such as a licensed Professional Engineer, Registered Landscape Architect or other NYSDEC endorsed individual(s). Individuals preparing SWPPPs that require the SMP component must have an understanding of the principles of hydrology, water quality management practice design, water quantity control design, and, in many cases, the principles of hydraulics. All components of the SWPPP that involve the practice of engineering, as defined by the NYS Education Law (see Article 145), shall be prepared by, or under the direct supervision of, a professional engineer licensed to practice in the State of New York. Stormwater Pollution Prevention Plan(SWPPP) ii 20 Skyward Drive February 2025 Trained Contractor - an employee from the contracting (construction) company, identified in Part III.A.7., that has received four (4) hours of NYSDEC endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity. After receiving the initial training, the trained contractor shall receive four (4) hours of training every three (3) years. It can also mean an employee from the contracting (construction) company, identified in Part III.A.7., that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of NYSDEC endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity). The trained contractor is responsible for the day-to-day implementation of the SWPPP. Excerpt from GP-0-25-001 Part III A.7.: Prior to the commencement of construction activity, the owner or operator must identify the contractor(s) and subcontractor(s) that will be responsible for installing, constructing, repairing, replacing, inspecting, and maintaining the erosion and sediment control practices included in the SWPPP and the contractor(s) and subcontractor(s) that will be responsible for constructing the SMPs included in the SWPPP. The owner or operator must have each of the contractors and subcontractors identify at least one person from their company to be trained contractor that will be responsible for implementation of the SWPPP. The owner or operator must ensure that at least one trained contractor is on site daily when soil disturbance activities are being performed. The owner or operator must have each of the contractors and subcontractors identified above sign a copy of the following certification statement below before the commencement of construction activities: Stormwater Pollution Prevention Plan(SWPPP) iii 20 Skyward Drive February 2025 SWPPP Certification "I hereby certify under penalty of law that I understand and agree to comply with the requirements of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the requirements of the most current version of the New York State Pollutant Discharge Elimination System (SPDES) Construction General Permit (CGP) for Stormwater Discharges from Construction Activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I am aware that there are significant penalties for submitting false information, that I do not believe to be true, including the possibility of fine and imprisonment for knowing violations" Contractor Information Contractor: Address: Phone: Fax: Elements of SWPPP: Trained Contractor Name: Title: Company Officer Name: Title: Signature: Date: Site Information Address: Stormwater Pollution Prevention Plan(SWPPP) iv 20 Skyward Drive February 2025 1.0 PROJECT BACKGROUND 1.1 Introduction The purpose of this report is to describe the methods that will be utilized to provide Stormwater Management for the proposed 20 Skyward Drive Warehouse at 20 Skyward Drive, City of Saratoga Springs, New York. This project proposes to disturb more than one (1) acre of land, as such the project is within the jurisdiction of the New York State Department of Environmental Conservation (NYSDEC) State Pollution Discharge Elimination System (SPDES) General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 and the NYSDEC Stormwater Design Manual (SWDM). The analysis and design that follows complies with the requirements of this permit. 1.2 Site Characteristics The project site is located at 20 Skyward Drive, City of Saratoga Springs, New York, north of Geyser Road (County Route 43) and approximately 2,300 feet west of Ballston Avenue (State Route 50). The parcel, tax map number 178.4-61, has an existing area of ±507,843 sq. ft. (±11.65 acres) and is currently undeveloped and mostly wooded with open areas. The site is located within the City's Industrial, General (IND-G) Zoning District. Developed industrial properties abut the site to the north and east, to the west there is an existing railroad line. 1.2.1 Topography and Drainage Patterns The site generally slopes inward to an on-site low point. A portion of the site slopes eastward to an existing stormwater management practice. 1.2.2 Wetlands, Waterbodies, Ecology, and Archaeology No wetlands or waterbodies have been observed or identified on the project site. 1.2.3 Soils The United States Department of Agriculture (USDA) Natural Resources Conservation Service's (NRCS) National Cooperative Soil Survey identifies the following soil type within the analyzed drainage area(s): Udipsamments, dredged (Ud) Hydrologic Soil Group (HSG): A Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Depth to water table: More than 80 inches Typical profile: 0 to 6 inch: loamy sand 6 to 72 inches: loamy sand Stormwater Pollution Prevention Plan(SWPPP) 1 20 Skyward Drive February 2025 Windsor loamy sand, 0 to 3 percent slopes (WnA) Hydrologic Soil Group (HSG): A Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Depth to water table: More than 80 inches Typical profile: 0 to 1 inch: moderately decomposed plant material 1 to 3 inches: loamy sand (A) 3 to 25 inches: loamy sand (Bw) 25 to 65 inches: sand (C) Windsor loamy sand, 3 to 8 percent slopes (WnB) Hydrologic Soil Group (HSG): A Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Depth to water table: More than 80 inches Typical profile: 0 to 1 inch: mod. decomposed plant material (0) 1 to 3 inches: loamy sand (A) 3 to 25 inches: loamy sand (Bw) 25 to 65 inches: sand (C) Windsor loamy sand, 8 to 15 percent slopes (WnC) Hydrologic Soil Group (HSG): A Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Depth to water table: More than 80 inches Typical profile: 0 to 1 inch: mod. decomposed plant material (Oe) 1 to 11 inches: loamy sand (Ap) 11 to 31 inches: loamy sand (Bw) 31 to 65 inches: sand (C) The above referenced soils are present within the subject drainage area(s) in the following quantities: Soil Name and Symbol HSG % of Site Soils Udipsamments, dredged (Ud) A 68.27% Windsor loamy sand, 0 to 3 percent slopes (WnA) A 3.97% Windsor loamy sand, 3 to 8 percent slopes (WnB) A 10.77% Windsor loamy sand, 8 to 15 percent slopes (WnC) A 16.99% 1.2.4 Existing Utilities Municipal water and sewer are available at the right-of-way. Electric and telecom are also available. 1.3 Proposed Project The project proposes to construct a single-story, steel-framed, 120,000 square foot building and associated parking and loading areas. Additional improvements include associated stormwater management facilities and incidental utilities. Stormwater Pollution Prevention Plan(SWPPP) 2 20 Skyward Drive February 2025 2.0 EROSION AND SEDIMENT CONTROL The proposed project described above shall comply with the New York State Department of Environmental Conservation SPDES General Permit for Stormwater Discharges from Construction Activities, Permit No. GP-0-25-001. The following section of this report outlines and details the structures and techniques utilized to minimize the transportation of sediments from the project site and to maintain the quality of nearby water resources. 2.1 Construction Phasing and Sequence of Operations The foremost method to reduce sediment transport is limiting the area of disturb soils on a construction site. Whenever possible construction should proceed in narrowly defined phases at the end of which areas are stabilized before proceeding to subsequent phases. Per SPDES permit requirements at no time shall site disturbances exceed five (5) acres at any one time without prior authorization of the NYSDEC or the authority having jurisdiction. We anticipate the need for a five (3) acre waiver for this project and will submit a formal request to the City of Saratoga Springs. For a project specific phasing plan please refer to Appendix O, Erosion and Sediment Control Plans. 2.2 Erosion and Sediment Control Practices 2.2.1 Stabilized Construction Entrance At a minimum one construction entrance shall be provided at the location shown on the Erosion and Sediment Control Plans. All construction related vehicles accessing the site shall enter and exit the site at this defined area. The entrance shall consist of a filter fabric laid on existing grade and covered with 1" - 4" stone. 2.2.2 Concrete Washout A concrete washout area shall be installed and properly signed prior to the first scheduled pour. The concrete washout shall be cleaned when it reaches 50% of its capacity. All waste shall be removed and properly disposed. The liner shall be inspected after removing spoils for punctures or tears. Any maintenance require shall be performed before placing the washout back into service. 2.2.3 Inlet Protection (Insert Type) Inlet protection shall be installed in all areas shown on the erosion and sediment control plans. To ensure proper operation of inlet protection is important that each device be inspected regularly. Collected sediment shall be removed and disposed of properly. Damaged devices Stormwater Pollution Prevention Plan(SWPPP) 3 20 Skyward Drive February 2025 shall be replaced as required. 2.2.4 Dust Control If exposed soils begin to generated dust these areas shall be sprayed with water to suppress dust. Additionally, sodium chloride or similar products may be used with approval from the qualified professional and authorities having jurisdiction. 2.2.5 Topsoil, Seed, and Mulch All disturbed, non-surfaced areas shall be stabilized by the application of topsoil, seed, and straw mulch or by utilizing an all-in-one product such as hydroseed that incorporates tackifier. Any area where final grade has been achieved or where construction activities have ceased for the next fourteen (14) calendar days shall be stabilized. Areas which have received topsoil and seed shall be inspected after rainfall events for rills or other signs of erosion and repaired or replaced as required. 2.2.6 Silt Fence Silt fence shall be installed in all areas shown on the erosion and sediment control plans. To ensure proper operation of silt fence it is important that all fabric is embedded a minimum of six (6) inches into the ground. Silt fence should not be installed on a slope or across defined drainageways. Silt fence shall be inspected regularly, collected sediment shall be removed and disposed of properly, and weak or downed areas reset as required. 2.2.7 Temporary Sediment Trap Temporary sediment traps shall be used to detain water and aid in sediment removal and collection. Collected sediment shall be removed from the practice once it has reached 50% of the capacity of the sediment storage zone (refer to details). The contractor shall dewater the basin and remove and properly dispose of collected sediment prior to decommissioning the temporary sediment trap. Refer to Appendix H for sizing of temporary sediment trap and refer to Sheet C-503 of the site plans for details. 2.2.8 Perimeter Dikes and Swales Perimeter dikes and swales shall be installed as required by the contractor to direct sediment-laden runoff to temporary sediment traps. These swales may be configured and reconfigured as required by current construction activities. Swales and dikes shall be installed so as to provide positive drainage toward an appropriate sediment trapping practice. At no time shall such swales discharge runoff off site prior to treatment. Stormwater Pollution Prevention Plan(SWPPP) 4 20 Skyward Drive February 2025 2.3 Maintenance Inspection Schedule Maintenance of erosion and sediment control practices is crucial to their effectiveness at minimizing sediment transport and preserving water quality. At a minimum all practices employed at any time shall be inspected by a trained contractor and qualified professional once every week. In addition, it is recommended that the trained contractor inspect all practices after any runoff producing rainfall event. Any deficiencies noted shall be remedied as soon as practical but not more than a week from the date identified. If the trained contractor or qualified professional encounter repeated maintenance issues with any erosion control practice, additional or different erosion and sediment controls may be installed. Any practices employed must be installed in accordance with the requirements and recommendations in the New York State Standards and Specifications for Erosion and Sediment Control, dated November 2016 or current version. 2.4 Construction Chemicals, Litter, and Debris The contractor shall maintain at all times facilities for the proper storage and disposal of wastes, litter, and debris generated on-site. All waste materials shall be stored and disposed in compliance with all federal, state, and local laws. Daily inspections shall be conducted by the trained contractor to ensure that construction debris is appropriately managed and is not adversely affecting neighboring properties. Stormwater Pollution Prevention Plan(SWPPP) 5 20 Skyward Drive February 2025 2.4.1 Materials The materials or substances listed below are expected to be present onsite during construction activities. They represent potential pollutants, other than sediment, to storm water runoff: Material Name Chemical/Physical Storm Water Pollutants(1) Description(1) Pesticides Various colored to colorless Chlorinated hydrocarbons, (insecticides, liquid, powder, pellets, or organophosphates, carbamates, fungicides, herbicides, granular arsenic rodenticides) Fertilizer Liquid or solid granules Nitrogen, phosphorous Asphalts Black solid Oil, petroleum distillates Concrete White solid Limestone, sand Curing compounds Creamy white liquid —Polyethylene Paints Various colored liquid Metal oxides, Stoddard solvent, talc, calcium carbonate, arsenic Glue, adhesive White or yellow —Polymers, epoxies Wastewater from construction Water Soil, oil & grease, solids equipment washing Hydraulic oil/fluids Brown oily petroleum Mineral oil hydrocarbon Gasoline Colorless, pale brown or pink Benzene, ethyl benzene, toluene, liquid petroleum hydrocarbon alenes, MTBE Diesel Fuel Clear, blue-green to yellow Petroleum distillate, oil & grease, liquid na hthalene, x lenes Antifreeze/coolants Clear green/yellow liquid Ethylene glycol, propylene glycol, hea metals (copper, lead, zinc) House construction Wood, insulations, shingles, Debris, garbage debris vinyl, cardboard, a er Erosion Solid particulates Soil, sedimentation (1) Data obtained from MSDS when available 2.4.2 Storage All chemicals or petroleum products on site shall be stored in a manner compliant with all applicable federal, state, and local laws. Any spillage of chemicals or petroleum products on site shall be reported to the authorities having jurisdiction in accordance with their requirements. A spill cleanup kit shall be kept on site at all times and an individual familiar with its operation shall be present on-site. The following measures will be implemented to prevent the discharge of solid materials to waters of the United States: • Manufacturer's recommendations for proper use and disposal will be followed. • The contractor will perform inspections based on the frequency outlined in the General Permit to ensure the proper storage, use, and disposal of materials. • The contractor will arrange for all sanitary waste to be collected from Stormwater Pollution Prevention Plan(SWPPP) 6 20 Skyward Drive February 2025 portable toilet units by a licensed sanitary waste management operator or as required by local regulation. • Pickups must be done on a regular basis. No burial or discharge of the sanitary waste may be conducted on-site. • The contractor will be responsible for the removal and off-site disposal of all construction related debris in accordance with State and federal law. No on-site waste disposal will occur. Where the use of dumpsters is proposed, the Contractor must determine and apply specific measures to keep waste within the dumpsters from being intermixed with storm water, including closing the dumpsters and installing drain plugs. Construction materials expected to be stored on-site are listed above. Procedures for the storage of these materials to minimize exposure of the materials to storm water are as follows: • All materials stored on-site must be stored in a neat and orderly manner; in their appropriate containers. Materials that are hazardous or toxic such as paints, solvents, pesticides, fuels and oils should be stored under a roof or other enclosure if possible. Where cover is not available, all hazardous or toxic materials should be stored in a location with secondary containment. • Materials will be kept in their original containers with the original manufacturer's label. • Asphalt substances used on-site will be applied according to manufacturer's recommendations. • Petroleum products will be stored in tightly sealed containers that are clearly labeled. The Contractor will inspect the staging areas based on the frequency outlined in the General Permit. Stormwater Pollution Prevention Plan(SWPPP) 7 20 Skyward Drive February 2025 2.4.3 Equipment The types of equipment typically used for this project will consist of track and rubber-tired diesel-powered vehicles (e.g., tracked hoes, front-end loaders, backhoes, graders, scrapers, bulldozers, and cranes), trucks, pumps, compressors, generators, and light vehicles. The following measures will be implemented: • All equipment will be parked or operated within the approved and designated construction right-of-way or in staging areas. • The contractor will monitor daily for leaking equipment. Equipment parked overnight will be inspected by the contractor and absorbent pads will be placed to catch all leaks, as necessary. If leaks are detected by the Environmental Inspector, the contractor will be notified and contaminated soil will be cleaned up immediately. • Major equipment cleaning and maintenance will be conducted in the contractor's offsite construction yard(s), at commercial cleaning facilities, or at commercial repair shops. • Refueling or servicing of vehicles and equipment, including minor maintenance such as oil changes or minor repairs for large equipment that cannot be easily moved, will be permitted on the construction site or right-of-way only as necessary. Any such work must be conducted at least 200 feet away from any drainage channel, wetland resource area and also outside of the 100-foot buffer zone. • The maintenance location will be under cover and include secondary containment. • Drip pans, drip cloths, or absorbent pads will be used when replacing spent fluids. • Do NOT clean surfaces by hosing the areas down. • Vehicle or equipment fueling, service, and maintenance will be conducted only by authorized trained personnel using approved pumps, hoses, and nozzles. • Hoses, nozzles, connectors, and pumps used for fueling will be inspected regularly by trained personnel. Catch-pans or absorbent pads will be placed under vehicles or equipment to catch potential spills during refueling, servicing, or maintenance. • Service trucks will be equipped with spill-containment equipment, and all spills will be cleaned up immediately. 2.5 Industrial Discharges This project does not currently propose any individual industrial discharges. 2.6 Non-Conforming Elements This project does not currently propose any deviations from the current technical standards provided by the NYSDEC. Stormwater Pollution Prevention Plan(SWPPP) 8 20 Skyward Drive February 2025 3.0 STORMWATER MANAGEMENT PRACTICES This project is required to provide post-construction stormwater management practices per Appendix B, Table 2 of the NYSDEC SPDES GP-0-25-001 permit. The following section presents the existing drainage conditions, proposed drainage conditions, and the methods and structures utilized to comply with federal, state, and local regulations. All structures proposed comply with the NYSDEC Stormwater Design Manual 2024, unless specifically stated otherwise. 3.1 Methodology For purposes of identifying drainage patterns and estimating runoff rates and volumes, existing and proposed conditions were analyzed using HydroCAD 10.20-6a developed by HydroCAD Software Solutions, LLC. This computer software uses the TR-20 method developed by the Natural Resources Conservation Service (NRCS), a division of the United States Department of Agriculture (USDA). Local rainfall data was obtained from the Northeast Regional Climate Center (NRCC) for all storm events analyzed. 3.2 Pre-Development Drainage Conditions The pre-development watershed conditions are depicted in Appendix G, "Existing Drainage Conditions." As shown, the site is divided into three (3) drainage areas. Drainage Area #1 (DA-1) consists of lawn and wooded areas with a portion of Skyward Drive. This area drains southeasterly towards a drainage Swale which flows to DP-1. DA-1 has a total area of ±144,102 sq. ft., a composite curve number (CN) of 49, and a time of concentration (Tc) of 12.2 minutes. Drainage Area #2 (DA-2) consists of woodlands with some open, sparsely vegetated areas. This area drains to the center towards DP-2. DP-2 has a total area of ±98,213 sq. ft., a CN of 43, and a Tc of 40.9 minutes. Drainage Area #3 (DA-3) consists of woodlands with some open, sparsely vegetated areas . This area drains to the east towards DP-3. DA-3 has a total area of ±272,292 sq. ft., a CN of 43, and a Tc of 40.3 minutes. Table 1 Pre-Development Runoff Rates Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) 0.36 0.023 1.34 0.090 2.00 0.159 3.84 0.345 0.00 0.000 0.02 0.015 0.10 0.044 0.68 0.140 0.00 0.000 0.05 0.041 0.27 0.123 1.90 0.388 Stormwater Pollution Prevention Plan(SWPPP) 9 20 Skyward Drive February 2025 3.3 Post-Development Drainage Conditions The post-development watershed conditions are depicted in Appendix G, "Proposed Drainage Conditions." As shown, the site is divided into five (5) sub-catchments. SC-101 consists of lawn areas with a portion of Skyward Drive. This area drains to the southeast towards a drainage Swale which flows to DP-1. SC- 101 has a total area of ±88,687 sq. ft., a CN of 52, and a Tc of 20.9 minutes. SC-102 consists of lawn areas, parking lot, and walkways. This area drains to swales that are directed towards the forebay and ultimately to infiltration basin #1. SC-102 has a total area of ±67,129 sq. ft., a CN of 77, and a Tc of 6 minutes. SC-103 consists of infiltration basin #1 that is immediately adjacent to the forebay. SC-103 has a total area of ±6,854 sq. ft., a CN of 39, and a Tc of 6 minutes. SC-104 consists of lawn areas, the building, driveways, paved loading areas and stairs. This area drains towards the forebay and ultimately to infiltration basin #2. SC-104 has a total area of ±350,833 sq. ft., a CN of 79, and a Tc of 6 minutes. SC-105 consists of lawn areas and driveways. This area drains directly to the forebay. SC-105 has a total area of ±16,091 sq. ft., a CN of 67, and a Tc of 6 minutes. Refer to Appendix J for development of the curve number, time of concentration, and calculations utilized in the post-development drainage analysis. Table 2 below presents the post-development peak runoff rate and volumes for Discharge Point 1 based on the 1, 10, 25, and 100-year storm events. Table 2 Post-Development Runoff Rates Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) 0.36 0.023 1.34 0.080 1.99 0.130 3.54 0.259 Discharge Point Eliminated Discharge Point Eliminated 3.4 Pre-Post Development Comparison Table 3 below compares the post-development peak runoff rates and runoff volumes to those of post-development discharge points. Figures are based on the 1, 10, 25, and 100-year storm events. Stormwater Pollution Prevention Plan(SWPPP) 10 20 Skyward Drive February 2025 Table 3 Pre-Post Development Comparison Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) Q(cfs) V(ac-ft) NO NO NO -0.010 -0.01 -0.029 -0.30 -0.086 CHANGE CHANGE CHANGE (-11.1%) (-0.5%) (-18.2%) (-7.8%) (-24.9%) Post-Development Reduction Unaltered Hydrology(<5%increase,per GP-0-25-001,App.A,pg. 56) Post-Development Increase Table 3 illustrates that the proposed stormwater management system will not alter hydrology from pre- to post-development conditions; defined as an increase of more than 5% from pre-developed conditions. 3.5 Stormwater Management Planning As required by the NYSDEC Stormwater Management Design Manual (SWMDM), 2024, projects which are subject to the NYSDEC SPDES GP-0- 25-001 permit must complete the following five-step planning process: 3.5.1 Site Planning Table 3.1 of the NYSDEC SWMDM identifies several practices which may be utilized during the site planning process to preserve natural resources and reduce impervious areas. Below are a list of the practices and a brief explanation of whether or not they were incorporated into the current plan and how. Preservation of Natural Resources Preservation of Undisturbed Areas - This practice was considered but not applied. Preservation of Buffers - Due to the nature of proposed earthwork this practice was not applied. Reduction of Clearing and Grading - Limits of clearing and grading have been reduced to the greatest extent practicable. Locating Development in Less Sensitive Areas - The proposed development avoids sensitive areas to the greatest extent practicable. Open Space Design - While this practice is not applicable to the current proposal, the proposed buildings and parking areas are adjacent to one another allowing for more contiguous green space. Soil Restoration - This project proposes to use soil restoration techniques in all applicable areas. Stormwater Pollution Prevention Plan(SWPPP) 11 20 Skyward Drive February 2025 Reduction of Impervious Cover Roadway Reduction - No roadways are proposed as part of this project. Sidewalk Reduction - The area of sidewalks proposed is as limited as practical. Driveway Reduction - The area of driveways proposed is as limited as practical. Cul-de-sac Reduction -There are no cul-de-sacs proposed as part of this project. Building Footprint Reduction - Building footprints have been reduced to the minimum required for the operations proposed. Parking Reduction - The parking provided is the minimum required by the proposed use. 3.3.2 Determine Water Quality Treatment Volume (WQv) The NYSDEC provides a Microsoft Excel based Green Infrastructure Worksheet. This worksheet provides calculations for both Water Quality and Runoff Reduction for sub-catchments within the project area. Refer to Appendix H for documentation. The calculated WQv for this project is 26,821 cu. ft. or ±0.616 ac.-ft. The WQv provided by this project is 0 cu. ft. or ±0.0 ac. ft. as the entire project is treated with Runoff Reduction practices. 3.5.3 Runoff Reduction (RRv) Techniques Based upon available site soil data it was determined that infiltration practices would be acceptable to provide RRv. Refer to section 3.5.5 for Infiltration Basin sizing. 3.5.4 Minimum RRv Required Per the NYSDEC SWDM Green Infrastructure Techniques are required for Runoff Reduction. An Infiltration Basin was selected as a standard practice with runoff reduction capacity to meet this requirement. Refer to Appendix H for design and sizing criteria. The minimum RRv is 22,085 cu. ft. or ±0.507 ac.-ft. The RRv provided by this project is 26,821 cu. ft. or ±0.616 ac.-ft. This exceeds the minimum and is equal to 100% of the WQv. Stormwater Pollution Prevention Plan(SWPPP) 12 20 Skyward Drive February 2025 3.5.5 Standard Stormwater Management Practices Infiltration Basin #1 (IB-1) receives runoff from SC-102 and SC-103. IB-1 is designed with an infiltration rate of 20 in./hr. therefore pretreatment equal to 50% of the WQv is required. Pretreatment for the contributing area is provided by a forebay. Vegetated swales direct runoff to the forebay. The forebay provides 2,329 cu. ft. of storage between elevations 321.50 and 324.50. The required WQv for this area is 4,028 cu. ft. - 50% of which is 2,014 cu. ft. - therefore adequate pretreatment is provided. IB-1 is equipped with an emergency spillway that directs storms larger than the 100-year event directly to DP-1. Infiltration Basin #2 (IB-2) receives runoff from SC-104 through SC- 108. IB-2 is designed with an infiltration rate of 20 in./hr. therefore pretreatment equal to 50% of the WQv is required. Pretreatment for the contributing area is provided by a forebay. A combination of vegetated swales and closed drainage systems direct runoff from the contributing area to the forebay. IB-2 is equipped with an Outlet Control Structure that directs storms larger than the 100-year event directly to DP-1. The forebay provides 15,740 cu. ft. of storage between elevations 314.00 and 318.00. The required WQv for this area is 22,793 cu. ft. - 50% of which is 11,397 cu. ft. - therefore adequate pretreatment is provided. Refer to Table 4 for a summary of each storm event and Appendix J for sizing. Table 4 Summary of Stormwater Management Practices imp 1.37 1.01 99 322.05 4.08 1.30 1,712 322.69 5.74 1.52 3,016 323.12 9.37 1.96 6,016 323.92 11.24 4.80 3,276 316.32 25.06 5.29 14,354 317.34 33.62 5.62 22,141 318.00 51.62 9.33 37,559 318.97 Stormwater Pollution Prevention Plan(SWPPP) 13 20 Skyward Drive February 2025 3.6 Non-Conforming Elements This project does not currently propose any deviations from the current technical standards provided by the NYSDEC. 3.7 Community Risk and Resiliency Act (CRRA) The Stormwater Pollution Prevention Plan (SWPPP) for this project incorporates an evaluation of future physical risks due to climate change, in accordance with the Community Risk and Resiliency Act (CRRA), 6 NYCRR Part 490, and associated guidance. The plan considers projected changes in climate, including increasing temperature, increasing precipitation, and greater variability in precipitation patterns that may lead to drought conditions. Additionally, the SWPPP accounts for the potential for more frequent and severe flooding, rising sea levels, increasing storm surge, and shifting ecological conditions that could impact site hydrology and stormwater management effectiveness. In response to these risks, overall site planning has been conducted with resilience in mind, ensuring that stormwater control measures, conveyance systems, and detention systems are designed to accommodate future climate conditions. The location, elevation, and sizing of these features consider increased precipitation volumes and intensities to prevent system overloading and minimize erosion. Conveyance systems are designed to manage both high-flow storm events and potential drought conditions, while detention basins are sized to accommodate increased runoff and attenuate peak discharge rates. Additionally, floodplain considerations and sea level rise projections have informed site grading and infrastructure placement, reducing long-term vulnerabilities to climate-induced impacts. By integrating these considerations, the SWPPP ensures compliance with CRRA while enhancing the project's resilience to future climate-related challenges. 3.8 Operations and Maintenance Regular inspections and maintenance of the post-construction stormwater management system is the responsibility of the property owner or other designated party. Currently the entity responsible for maintenance of this facility is: Munter Enterprises, Inc. 881 Murray Road Middle Grove, New York 12850 For the first year of operation, commencing upon filing of a Notice of Termination (NOT) with the NYSDEC, an inspection of the facility shall be conducted every six (6) months by a New York State licensed professional engineer. For subsequent years inspections may be conducted annually. Inspection and maintenance checklists are included in Appendix L. Records of inspections should be maintained on-site and any recommendations for Stormwater Pollution Prevention Plan(SWPPP) 14 20 Skyward Drive February 2025 repairs or replacement of stormwater management facilities shall be made in a timely manner. In addition to these annual inspections, the property owner or property manager should familiarize themselves with the purpose and operation of any permanent stormwater management facilities. After heavy rainfalls it should be noted if any facilities appear to have damaged or have ceased normal operations. Within forty-eight (48) hours after a heavy rainfall event, standing water should not be visible in infiltration or flow-through practices such as Bioretention Areas. If any of these anomalies are witnessed the inspecting engineer should be notified and a plan to remedy these deficiencies should be prepared. 3.9 Summary This Stormwater Pollution Prevention Plan presents the analysis and design of the Stormwater Management System and components for the 20 Skyward Warehouse. The post-development stormwater runoff system utilizes on-site infiltration that complies with the requirements of the NYSDEC. The project plans show the locations, sizes, and shapes of stormwater management practices, including all stormwater management facilities. This stormwater management system, when constructed as designed, will function adequately and will not adversely affect downstream watercourses, structures or properties. Respectfully submitted: Aaron J. Vera, P.E. Principal Engineer Verity Engineering, D.P.C. Stormwater Pollution Prevention Plan(SWPPP) 15 20 Skyward Drive February 2025 Appendix A Location Map Stormwater Pollution Prevention Plan(SWPPP) A 20 Skyward Drive February 2025 .-7�yVenty J �C . �lj ,/,✓{ l 3 ] A czi �Q OQ Verity Engineering,D.P.C. �l P 0.Box 474 y- _ ///''' Troy,New York 12181 (518)389-7200 1 verltyeng.com PINE'ALY J � ®e� Murs"r t o UR 1 ! ... J `° WALTERDR _._v z ���-�� ;✓ n CN'ST ..°N>®y salM�—yRoad rrIL-�� v �iY-� � � T"". r _ / Middle Grave NY 12850 NAVAL SUPPORT UNIT a - y m°"Sa461,4 pIVISION ST u z rerenterar ses.com < J m x �o SARATOGA SPRINGS-xL ��' a w �_sa- Z in z H w a o o w a s 350 I WASHINGT N ^F- ctY DR Putnam Cem) m Q a r f Jo o S' s E� JE /ASH ST = 9 o SUI LU z 0 v AA f h �ZF �yP�Q P r �O f S Lu W z W W LIRCULA •S Q > HE 0 0— SRWOOD TRL� f o { z- F-1 J z 10.1 0 F Q o wQ �' pR ACE Saiht, �� 3 t GLENM,_ i . ❑ r p o Q �p� f Reter's Cem q Greenrid e Z ///j Ln 1 M1i l~l�� mil/ 1 N. D /l C7 to o�iilaw� 9 V 0 0 n "W SITE Q ' DUPLAINVILLE RD uo e 4vF A O O �j cd D F PINES G ADAMS RD�� 300 LORD 4 \ �._ \IP .�E��.xE..aE>�.�.�.oEa..E Tj IIT i �� -- t. S� ° ..Ea.,a.. o..E of 1111«,E�.1ory arvo.soE<�a�oE,1a.o.�o�o... Munger ,em p`� Ell—E—G,o.o.<.>«A—.s AE,EAIEo. � DESIGNED BY: EAS DRAWN BY: EAS 50 V� � o Y p �7 CHECKED BY: A]V Sna BAKER RD a Lu APPROVED BY: A]V q 3 a 111' o �s� y til SCALE: AS NOTED d p DATE: 11/07l2024 �e 9Q LOCATION MAP TAMARACK OURTBLVD LOCUS 1 of 1 Appendix B Notice of Intent/Acknowledgement of Coverage Stormwater Pollution Prevention Plan(SWPPP) B 20 Skyward Drive February 2025 Construction General Permit (CGP) Electronic Notice of Intent (eNOI) G P-0-25-001 version 1.0 (Submission #: HQA-HS2C-XYJ8Y, version 1) Details Originally Started By Aaron James Vera Alternate Identifier 20 Skyward Drive Warehouse—Region 5 Submission ID HQA-HS2C-XYJ8Y Status Draft Form Input Eligibility Disturbance Threshold 1. Will the construction activity involve soil disturbances listed in Part I.A.1 of GP-0-25-001? Yes 1.a. Will any runoff from the site enter a sewer system classified as a combined sewer? No 1.b. Is this a remediation project being done under a Department approved work plan (i.e. CERCLA, RCRA, Voluntary Cleanup Agreement, etc.) with a SWPPP which meets the substantive requirements of GP-0-25-001? No 1.c. Is the construction activity related to a stormwater discharge that does not require a permit as described in 40 CFR 122.3(e), e.g. non-point source agriculture or silviculture activities? No Other SPDES Permits 2. Will the discharge from the construction activity meet all conditions listed in Part I.A.2 of GP-0- 25-001? Yes Threatened and Endangered Species 3. Will the construction activity potentially adversely affect a species that is endangered or threatened per Part I.A.3.? No State Historic Preservation Act(SHPA) 4. Is the construction activity designated by the Commissioner of the Office of Parks, Recreation and Historic Preservation (OPRHP), pursuant to 9 NYCRR§§428.12 or 428.13 as exempt from the SHPA review (see Attachment 2 of the Letter of Resolution between NYSDEC and OPRHP, dated January 9, 2015)? No 4.a. Will the construction activity: a) occur within an archeologically sensitive area indicated on the sensitivity map, or b) have the potential to affect a property that is listed or determined to be eligible for listing on the Ne or State Registers of Historic Places, or c) include a new permanent building on the construction site within the following distances from a building, structure, or object that is more than 50 years old and OPRHP, a Historic Preservation Commission of a Certified Local Government, or a qualified preservation professional has determinec historically/archeologically significant building, structure, or object: • 1-5 acres of disturbance-20 feet • 5-20 acres of disturbance-50 feet 20+ acres of disturbance-100 feet? No 4.b. Is there documentation at the construction site demonstrating: a) that the construction activity is not within an archeologically sensitive area indicated on the sensiti, map, and that the construction activity is not immediately adjacent to a property listed or determined t eligible for listing on the National or State Registers of Historic Places, and b) that there is no new permanent building to be built on the construction site within the following distances from a building, structure, or object that is more than 50 years old, or if there is such a new permanent building on the construction site within those parameters that OPRHP, a Historic Preserva Commission of a Certified Local Government, or a qualified preservation professional has determinec the building, structure, or object more than 50 years old is not historically/archeologically significant: 1-5 acres of disturbance—20 feet • 5-20 acres of disturbance—50 feet 20+ acres of disturbance— 100 feet? Yes State Environmental Quality Review(SEAR) 5. Is the construction activity subject to SEQR (Part I.A.5.), or the equivalent environmental review from another NYS or federal agency (Part I.A.6.)? Yes 5.a. Has the owner/operator obtained documentation that the project review pursuant to SEAR, or the equivalent, has been satisfied per Part I.A.5. or I.A.6. of GP-0-25-001? Yes Uniform Procedures Act (UPA) Permits 6. Has the owner/operator obtained all necessary UPA permits from NYSDEC, or the equivalent from another NYS or federal agency per Part I.A.7.a. of GP-0-25-001? Yes Steep Slope 7. Is the construction activity within the watershed of surface waters of the State classified as AA or AA-S identified utilizing the Stormwater Interactive Map on NYSDEC's website? No Owner/Operator Information 8. Owner/Operator Name Munter Land Holdings, LLC 9. Owner/Operator Contact Person Information First and Last Name Phone E-mail John Munter 5185846174 john@munterenterprises.com 10. Owner/Operator Mailing Address 881 Murray Road Middle Grove, NY 12850 USA 11. Is the billing contact different from the Owner/Operator Contact? No 12. What type of organization is the owner/operator? LLC 12.b. Is the owner/operator registered with the Department of State to do business in New York State? Yes 12.b.i. Department of State ID # 3887501 The Department of State ID can be found using the following link: Department of State I Division of Corporations Site Information 13. Project/Site Name 20 Skyward Drive Warehouse 14. Site Address 20 Skyward Drive Saratoga Springs, NY 12866 Saratoga DEC Region 5 15. Site Latitude & Longitude 43.06146200113339,-73.81636243377312 Project Details 16. This eNO1 submission is for: A construction activity not part of a common plan of development or sale in accordance with Part I.D.1.a. 17. Does the project type fall under Table 1 or Table 2 of Appendix B of GP-0-25-001? If any portion of the construction activity falls under Table 2, regardless of the size of the disturbance, select "Table 2". Table 2 18. Consistent with Part III.B.1.c.i. of GP-0-25-001, provide a concise overview of the project. Describe existing and proposed conditions, and include any other relevant information. Construction of a 120,000 sq. ft. warehouse and associated site improvements (parking, driveways, stormwater management). Enter the total project site acreage, the acreage to be disturbed, and the future impervious area (acreage) within the disturbed area, rounded to the nearest tenth of an acre. 19. Total Site Area (acres) 11.7 20. Total Area to be Disturbed (acres) 11.2 21. Existing Impervious Area to be Disturbed (acres) 0.0 22. Future Impervious Area Within Disturbed Area (acres) 6.8 Nature of the project: New Construction 23. Do you plan to disturb more than 5 acres of soil at any one time? Yes The owner/operator must meet the requirements in Part I.E.6. before disturbing greater than five acres at any one time. 24. Indicate the percentage (%) of each Hydrologic Soil Group(HSG) at the site. A(%) 100 B (%) 0 C (%) 0 D (%) 0 25. Enter the planned start and end dates of the disturbance activities. Start Date 04/01/2025 End Date 12/31/2025 26. Identify the nearest surface waterbody(ies) to which construction site runoff will discharge. Geyser Brook and tribs - 1101-0071 27. Type of waterbody identified in question 26? Stream/Creek Off Site 28. Has the surface waterbody in question 26 been identified as a 303(d) segment in Appendix D of GP-0-25-001? No 29. Is this project located in one of the Watersheds identified in Appendix C of GP-0-25-001? No 30. Will the project disturb soils within a State regulated wetland or the protected 100 foot adjacent area? No 31. Does the site runoff enter a separate storm sewer system (including roadside drains, swales, ditches, culverts, etc)? Yes 31.a. What is the name of the municipality/entity that owns the separate storm sewer system? If the separate sewer system is owned by an MS4 Operator, enter the MS4 Operator name. City of Saratoga Springs 32. Will future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law? No 33. Is this property owned by a state authority, state agency, federal government or local government? No Required SWPPP Components General SWPPP Requirements 34. Has a SWPPP been developed in conformance with the requirements in Part III. of GP-0-25-001? Yes 35. Does the SWPPP demonstrate consideration of the future physical risks due to climate change pursuant to the CRRA, 6 NYCRR Part 490, and associated guidance per Part III.A.2. of GP-0-25- 001? Yes 36. Has the required Erosion and Sediment Control component of the SWPPP been developed in conformance with the current NYS Standards and Specifications for Erosion and Sediment Control (aka Blue Book)? Yes 37. Has the post-construction stormwater management practice component of the SWPPP been developed in conformance with the NYS Stormwater Management Design Manual? Yes 37.a. Which version of the NYS Stormwater Management Design Manual was used to develop the SWPPP? 2024 SWPPP Preparer 39. The Stormwater Pollution Prevention Plan (SWPPP) was prepared by: Professional Engineer(P.E.) 40. Name of the person who prepared the SWPPP Aaron Vera 41. SWPPP Preparer Organization Name Verity Engineering, D.P.C. 42. SWPPP Preparer Contact Information First and Last Name Phone E-mail Aaron Vera 5183897200 aaron@verityeng.com 43. SWPPP Preparer Address PO BOX 474 TROY, NY 12181-0474 Download SWPPP Preparer Certification Form Please take the following steps to prepare and upload your preparer certification form: 1) Click on the link below to download a blank certification form 2)The certified SWPPP preparer should sign this form 3) Upload the completed form Download SWPPP Preparer Certification Form 44. Please upload the SWPPP Preparer Certification NONE PROVIDED Comment NONE PROVIDED 44.a. Has the SWPPP Preparer Certification Form been signed by the SWPPP preparer in accordance with Part VII.J of GP-0-25-001? Yes Erosion & Sediment Control Criteria 45. Has a construction sequence schedule for the planned management practices been prepared? Yes Post-Construction Criteria Site Planning and Soil Restoration 46. Identify all site planning practices that were used to prepare the final site plan/layout for the project. Reduction of Clearing and Grading Parking Reduction Sidewalk Reduction Building Footprint Reduction 47. Indicate which of the following soil restoration criteria was used to address the requirements in Section 5.1.6 ("Soil Restoration") of the Design Manual. All disturbed areas will be restored in accordance with the Soil Restoration requirements in Table 5.3 of the Design Manual (see page 5-22). Water Quality Criteria 49. Water Quality Sizing Criteria Total WQv Total RRv Minimum RRv Total WQv Sum of RRv and required (acre- provided (acre- provided (acre- feet) feet) (acre-feet) feet) WQv provided 0.616 0.616 NaN Water Quantity Criteria 51. Does one of the waiver conditions apply to the channel protection for this construction activity? Yes 51.a. The need to provide channel protection has been waived because: Reduction of the total CPv is achieved on site through runoff reduction techniques or infiltration systems. 52. Does one of the waiver conditions apply to the Qp and Qf for this construction activity? No Overbank Flood Control Criteria (Qp) 52.b.i. Pre-Development (CFS) 1.34 52.b.ii. Post-Development (CFS) 1.34 Total Extreme Flood Control Criteria (Qf) 52.b.iii. Pre-Development (CFS) 3.84 52.b.iv. Post-Development (CFS) 3.54 Operation and Maintenance 53. Has a long-term Operation and Maintenance Plan for the post-construction stormwater management practice(s) been developed? Yes 53.a. Identify the entity responsible for the long-term Operation and Maintenance. Munter Land Holdings, LLC Post-Construction SMP Identification 54. Post-Construction RR Techniques and Standard SMPs RR Techniques and Contributing Impervious Area Total Contributing Area SMPs (acres) (acres) Infiltration Basin (1-2) 10.120 55.Alternative SMPs Type of Manufacturer of the Name of the Contributing Impervious Alternative SMP Alternative SMP Alternative SMP Area (acres) NONE PROVIDED NONE PROVIDED NONE PROVIDED NONE PROVIDED Other Permits 56. Identify other permits, existing and new, that are required for this project/facility. None 57. Is this NOI for a change in owner/operator per Part I.G.? No MS4 SWPPP Acceptance 59. Is the construction activity located within the municipal boundaries of a regulated, traditional land use control MS4? Yes 59.a. Which form is required per Part I.D.2.b.ii.? MS4 SWPPP Acceptance Form MS4 SWPPP Acceptance Form Download Download the MS4 SWPPP Acceptance Form from the link below. MS4 SWPPP Acceptance Form 60. MS4 Acceptance or No Jurisdiction Form Upload NONE PROVIDED Comment NONE PROVIDED 60.a. Has the form been signed by the principal executive officer or ranking elected official—or duly authorized representative of that person—in accordance with Part VII.J. and submitted along with this NOI? Yes Owner/Operator Certification Owner/Operator Certification Form Download Download the Owner/Operator Certification Form by clicking the link below. Owner/Operator Certification Form 61. Upload Owner/Operator Certification Form NONE PROVIDED Comment NONE PROVIDED 61.a. Has the Owner/Operator Certification Form from Appendix J been signed by the owner/operator, or a representative of the owner/operator in accordance with Part VII.J of GP-0-25- 001 and uploaded to the eNOl? Yes Additional Project Information 62. Enter any additional pertinent project information in the text box below. NONE PROVIDED Appendix C MS4 Acceptance Form Stormwater Pollution Prevention Plan(SWPPP) C 20 Skyward Drive February 2025 Department of RK STATE Environmental Conservation MS4 SWPPP Acceptance Form for construction activities seeking authorization under the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (In accordance with CGP Part I.D.2.b., the completed form must be attached to the eNO1 and submitted to NYSDEC electronically.) I. Project Owner/Operator Information 1. Owner/Operator Name: 2. Contact Person: 3. Street Address: 4. City/State/Zip: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/State/Zip: III. Stormwater Pollution Prevention Plan (SWPPP) Review and Acceptance Information 8. SWPPP Reviewed by: 9. Title/Position: 10. Date Final SWPPP Reviewed and Accepted: IV. Regulated MS4 Information 11. Name of MS4 Operator: 12. MS4 SPDES Permit Identification Number: NYR20A 13. Street Address: 14. City/State/Zip: 15. Telephone Number: Page ] of 2 MS4 SWPPP Acceptance Form - continued V. Certification Statement - MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan (SWPPP)for the construction project identified in section II. of this form has been reviewed and meets the substantive requirements in the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP). Note: The MS4 Operator, through the acceptance of the SWPPP, assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP. In addition, review and acceptance of the SWPPP by the MS4 Operator does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name': Title/Position: Signature: Date: VI. Additional Information ' Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2. (NYSDEC - MS4 SWPPP Acceptance Form - January 2025) Page 2 of 2 Appendix D SPDES General Permit GP-0-25-001 Stormwater Pollution Prevention Plan(SWPPP) D 20 Skyward Drive February 2025 PREFACE voRK Department of STATE Environmental Pursuant to Section 402 of the Clean Water Act(CWA),and 40 CFR Conservation 122.26(b)(14)(x),(15)(i),and(15)(ii),stormwater discharges from certain construction activities are unlawful unless they are authorized by a National Pollutant Discharge NEW YORK STATE Elimination System(NPDES)permit or by a state permit program.New York State DEPARTMENT OF ENVIRONMENTAL administers the approved State Pollutant Discharge Elimination System(SPDES) CONSERVATION(NYSDEC) program with permits issued in accordance with the New York State Environmental SPDES GENERAL PERMIT Conservation Law(ECL)Article 17,Titles 7 and 8,and Article 70,as well as 6 NYCRR FOR STORMWATER DISCHARGES Parts 621 and 750. From Construction activities constitute construction of a point source and,therefore, CONSTRUCTION ACTIVITY pursuant to ECL sections 17-0505,17-0701,and 17-0803,the owneror operatormust have coverage under a SPDES permit prior to commencement of construction activities. Permit No.GP-0-25-001 The owner or operator cannot wait until there is an actual discharge from the Construction General Permit(CGP) construction site to obtain permit coverage. Issued Pursuant to Article 17,Titles 7,8 and Article 70 of the Environmental Conservation Law *Note:The italicized words/phrases within this permit are defined in Appendix A. Effective Date:January 29,2025 Expiration Date:January 28,2030 Scott E.Sheeley Chief Permit Administrator p �ta cT 1!?ALI� Sail, Z 9, 2 O 2 5- Authorized Signature Date Address: NYSDEC Division of Environmental Permits 625 Broadway,4th Floor Albany,N.Y. 12233-1750 NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION N. NYSDEC Orders or Civil Decrees/Judgments..................................................53 SPDES CONSTRUCTION GENERAL PERMIT(CGP)GP-0.25.001 O. Property Rights................................................................................................53 FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES P. Compliance with Interstate Standards..............................................................53 Q. Oil and Hazardous Substance Liability.............................................................54 Table of Contents R. Severability.......................................................................................................54 S. NYSDEC Approved Forms...............................................................................54 Part I.How to Obtain Coverage and General Requirements.....................................5 APPENDIX A—Abbreviations and Definitions..........................................................55 A. Eligibility Requirements......................................................................................5 Abbreviations.............................................................................................................55 B. Types of Discharges Authorized........................................................................9 Definitions..................................................................................................................56 C. Prohibited Discharges......................................................................................10 APPENDIX B—Required SWPPP Components by Project Type.............................64 D. Electronic Notice of Intent(eNO1)Submittal.....................................................10 Table 1.......................................................................................................................64 E. General Requirements for Owners or Operators with Permit Coverage..........14 Table 2.......................................................................................................................66 F. Permit Coverage for Discharges Authorized Under GP-0-20-001....................18 APPENDIX C—Watersheds Requiring Enhanced Phosphorus Removal...............68 G. Change of Owner or Operator..........................................................................19 APPENDIX D—Impaired Waterbodies(by Construction Related Pollutants)........74 Part If.Water Quality-Based Effluent Limitations.....................................................20 APPENDIX E—List of NYSDEC Regional Offices.....................................................80 A. Maintaining Water Quality................................................................................20 APPENDIX F—SWPPP Preparer Certification Form................................................81 B. Ef0uent Limitations Applicable to Discharges from Construction Activities......20 APPENDIX G—MS4 SWPPP Acceptance Form........................................................83 C. Post-Construction Stormwater Management Practice(SMP)Requirements...23 APPENDIX H—NYCDEP SWPPP Acceptance/Approval Form................................86 Part III.Stormwater Pollution Prevention Plan(SWPPP).........................................28 APPENDIX I—MS4 No Jurisdiction Form..................................................................89 A. General SWPPP Requirements.......................................................................28 APPENDIX J—Owner/Operator Certification Form..................................................91 B. Required SWPPP Contents.............................................................................32 C. Required SWPPP Components by Project Type..............................................37 Part IV.Inspection and Maintenance Requirements................................................37 A. General Construction Site Inspection and Maintenance Requirements...........37 B. Contractor Maintenance Inspection Requirements..........................................37 C. Qualified Inspector Inspection Requirements...................................................38 Part V.How to Terminate CGP Coverage..................................................................43 A. Electronic Notice of Termination(eNOT)Submittal..........................................43 Part VI.Record Retention and Reporting..................................................................45 A. Record Retention.............................................................................................46 B. Reporting.........................................................................................................46 Part VII.Standard Permit Requirements...................................................................46 A. Duty to Comply.................................................................................................46 B. Need to Halt or Reduce Activity Not a Defense................................................46 C. Penalties..........................................................................................................46 D. False Statements.............................................................................................47 E. Re-Opener Clause...........................................................................................47 F. Duty to Mitigate................................................................................................47 G. Requiring Another General Permit or Individual SPDES Permit.......................47 H. Duty to Provide Information..............................................................................49 I. Extension.........................................................................................................49 J. Signatories and Certification............................................................................50 K. Inspection and Entry........................................................................................52 L. Confidentiality of Information............................................................................53 M. Other Permits May Be Required......................................................................53 Part I. Part I.A.2. Part I.How to Obtain Coverage and General Requirements 2. Discharges from the owner's or operator's construction activities are/were not: To be covered under this permit,the owner or operator must meet all eligibility a. already covered by a different SPDES permit;or requirements in Part I.A.and follow the requirements for obtaining permit coverage in Part I.D.,F.,or G. b. covered under a different SPDES permit that was denied,terminated, or revoked;or A. Eligibility Requirements c. identified in an expired individual SPDES permit that was not renewed; For a common plan of development or sale,the phase(s)that meet the eligibility or requirements in Part I.A.may obtain coverage under this permit even if other phase(s)of the same common plan of development or sale do not meet the d. required to obtain an individual SPDES permit or another general eligibility requirements and require an individual SPDES permit. SPDES permit in accordance with Part VII.K. 1. The owner's or operator's construction activities involve soil disturbances of: 3. If construction activities may adversely affect a species that is endangered or threatened,the owner or operator must obtain a: a. one or more acres;or a. permit issued pursuant to 6 NYCRR Part 182 for the project;or b. less than one acre which are part of a common plan of development or sale that will ultimately disturb one or more acres;or b. letter issued by NYSDEC of non-jurisdiction pursuant to 6 NYCRR Part 182 for the project. c. less than one acre where NYSDEC has determined that a SPDES permit is required for stormwater discharges based on the potential for 4. If construction activities have the potential to affect an historic property,the contribution to a violation of a water quality standard or for significant owner or operator must obtain one of the following: contribution of pollutants to surface waters of the State. a. documentation that the construction activity is not within an i. 5,000 square feet or more,but less than one acre,and are in archeological buffer area indicated on the sensitivity map,and that the the New York City Watershed located east of the Hudson River, construction activity is not located on or immediately adjacent to a Appendix C Figure 1;or property listed or determined to be eligible for listing on the National or State Registers of Historic Places,and that there is no new permanent ii. 20,000 square feet or more,but less than one acre,within the building on the construction site within the following distances from a municipal boundaries of the City of New York(NYC);or building,structure,or object that is more than 50 years old,or if there is such a new permanent building on the construction site within those ill. less than 20,000 square feet which are part of a common plan parameters that NYS Office of Parks,Recreation and Historic of development or sale that will ultimately disturb 20,000 square Preservation(OPRHP),a Historic Preservation Commission of a feet or more,but less than one acre,within the municipal Certified Local Government,or a qualified preservation professional boundaries of NYC;or has determined that the building,structure,or object more than 50 years old is not historically/archeologically significant: iv. that creates 5,000 square feet or more of impervious area within the municipal boundaries of NYC. i. 1-5 acres of disturbance-20 feet;or ii. 5-20 acres of disturbance-50 feet;or 5 6 Part I.A.4.a.iii. Part I.A.6. ill. 20+acres of disturbance-100 feet. owner or operator must obtain documentation that project review,pursuant to a process equivalent to SEQR from another New York State or federal b. NYSDEC consultation form sent to OPRHP,1 and copied to NYSDEC's agency,has been satisfied. Agency Historic Preservation Officer(APO),and 7. If construction activities require Uniform Procedures Act(UPA)Permits(see 6 i. the State Environmental Quality Review Act(SEAR) NYCRR Part 621)from NYSDEC,or the equivalent from another New York Environmental Assessment Form(EAF)with a negative State or federal agency,the owner or operator must: declaration or the Findings Statement,with documentation of OPRHP's agreement with the resolution;or a. obtain all such necessary permits;or I. documentation from OPRHP that the construction activity will It. receive notification from NYSDEC pursuant to 6 NYCRR 621.3(a)(4) result in No Impact;or excepting Part I.A.7.a. iii. documentation from OPRHP providing a determination of No 8. Construction activities are not eligible if they meet the following criteria in Part Adverse Impact;or I.A.8.a.or b.: iv. a Letter of Resolution signed by the owner or operator,OPRHP a. For linear transportation and linear utility project types,the construction and the DEC APO which allows for this construction activity to activities: be eligible for coverage under the general permit in terms of the State Historic Preservation Act(SHPA). i. are within the watershed of surface waters of the State classified as AA or AA-S identified utilizing the Stormwater c. documentation of satisfactory compliance with Section 106 of the Interactive Map on NYSDEC's website;and National Historic Preservation Act for a coterminous project area: ii. are undertaken on land with no existing impervious cover,and i. No Affect;or ill. disturb two or more acres of steep slope. ii. No Adverse Affect;or b. For all other project types,the construction activities: iii. Executed Memorandum of Agreement. i. are within the watershed of surface waters of the State d. documentation that SHPA Section 14.09 has been completed by classified as AA or AA-S identified utilizing the Stormwater NYSDEC or another state agency. Interactive Map on NYSDEC's website;and 5. If construction activities are subject to SEAR,the owner or operator must ii. are undertaken on land with no existing impervious cover,and obtain documentation that SEQR has been satisfied. iii. disturb one or more acres of steep slope. 6. If construction activities are not subject to SEAR,but subject to the equivalent environmental review from another New York State or federal agency,the 'The consultation form can be submitted,along with other project information,through OPRHP's Cultural Resource Information System(CRIS)portal.If submitted through CRIS, paper copies of the consultation form need not be mailed. 7 8 Part I.B. Part I.B.3. B.Types of Discharges Authorized 3. Authorized discharges of stormwater or authorized discharges of non- stormwater,commingled with a discharge authorized by a different SPDES 1. The following stormwater discharges are authorized under this permit: permit and/or a discharge that does not require SPDES permit authorization, are also authorized under this permit. a. Stormwater discharges,including stormwater runoff,snowmelt runoff,and surface runoff and drainage,associated with construction activity,are authorized under this permit provided that appropriate stormwater controls C. Prohibited Discharges are designed,installed,and maintained in accordance with Part II.and 1. Non-stormwater discharges prohibited under this permit include but are not Part III. limited to: b. Stormwater discharges from construction support activities at the construction site(including concrete or asphalt batch plants,equipment a. Wastewater from washout of concrete;and staging yards,material storage areas,excavated material disposal areas, b. Wastewater from washout and cleanout of stucco,paint,form release and borrow areas)if the following requirements are met: oils,curing compounds,and other construction materials;and I. The support activity is directly related to the construction site required to have permit coverage for stormwater discharges;and c. Fuels,oils,or other pollutants used in vehicle and equipment operation and maintenance;and ii. The support activity is not a commercial operation,nor does it serve multiple unrelated construction sites;and d. Soaps,solvents,or detergents used in vehicle and equipment washing or external building washdown;and iii. The support activity does not continue to operate beyond the completion of the construction activity at the site it supports;and e. Toxic or hazardous substances from a spill or other release. iv. Stormwater controls are implemented in accordance with Part II. D. Electronic Notice of Intent(eNO1)Submittal and Part III.for discharges from the support activity areas. To receive authorization in accordance with Part I.D.3.b.,the owner or operator 2. The following non-stormwater discharges associated with construction activity must submit a complete eNOl in accordance with the requirements in Part I.D. are authorized under this permit: The eNO1 contains questions to:ensure eligibility requirements in Part I.A.have been met;obtain owner or operator contact information;obtain the total area to a. Non-stormwater discharges listed in 6 NYCRR 750-1.2(a)(29)(vi),with the be disturbed and the existing/future impervious areas(rounded to the nearest following exception:"Discharges from firefighting activities are authorized tenth of an acre);confirm Traditional Land Use Control MS4 Operator jurisdiction only when the firefighting activities are emergencies/unplanned";and over construction projects;satisfy the EPA eRule requirements;confirm that the Water Quality-Based Effluent Limitations in Part II.have been met;demonstrate consideration of the future risks due to climate change in accordance with Part b. Non-stormwater discharges of waters to which other components have not III.A.2.;and confirm that the other Stormwater Pollution Prevention Plan been added that are used in accordance with the SWPPP to control dust (SWPPP)requirements in Part III.have been met. or irrigate vegetation in stabilized areas;and 1. An eNOl may be submitted for: c. Uncontaminated discharges from dewatedng operations a. construction activities that are not part of a common plan of development or sale;or 9 10 Part I.D.1.b. Part I.D.2.1b.i.2. b. an entire common plan of development or sale;or 2. the Owner/Operator Certification Form,Appendix J, signed by the owner or operator,and c. separate phase(s)of a common plan of development or sale if the following requirements are met: ii. if an eNO1 includes construction activities within the municipal boundary(ies)of Traditional Land Use Control MS4 Operator(s) i. the common plan of development or sale meets the eligibility that will discharge to the MS4(s): requirements of Part I.A.S.or 6.;and 1. determine if the Traditional Land Use Control MS4 ii. the phase(s)meet(s)all other eligibility requirements of Part Operator(s)have review authority.A Traditional Land I.A.;and Use Control MS4 Operator does not have review authority where: ill. Part III.C.Required SWPPP Components by Project Type is based on the common plan of development or sale,not the a. the owner or operator of the construction activities phase(s);or in Part I.D.2.b.ii.is the same entity as the Traditional Land Use Control MS4 Operator d. tree clearing that is associated with,or will support,a renewable identified in Part I.D.2.b.ii.;or energy generation,transmission,or storage project that meets Part I.A.S.and 6.,if the tree clearing: b. there is a statute exempting the owner or operator from zoning review by the Traditional Land Use i. meets all other eligibility requirements of Part I.A.;and Control MS4 Operator,or ii. will occur in NYSDEC's Regions 3-9;and c. there is no such statute per Part I.D.2.b.ii.l.b.,the Traditional Land Use Control MS4 Operator iii. is not within Y.mile of a bat hibernaculum protected pursuant to concludes,after public hearing,that it does not 6 NYCRR Part 182;and have zoning review authority in accordance with Legal Memorandum LU14 Updated January 2020 iv. will occur between November V and March 315'. "Governmental Immunity from Zoning and Other Legislation';and 2. As prerequisites for submitting an eNOl,the owner or operator must: 2. if the Traditional Land Use Control MS4 Operator(s)have a. prepare a SWPPP for Part I.D.1.a.,b.,c.,or d.in accordance with Part review authority,submit the SWPPP to the Traditional III.;and Land Use Control MS4 Operator(s)for review and have: b. based on the following criteria,upload the following signature forms a. if outside the municipal boundaries of NYC:the signed in accordance with Part VII.J.to the eNOl prior to submission: MS4 SWPPP Acceptance Form,Appendix G, signed by the principal executive officer or ranking i. for all eNOls: elected official from the Traditional Land Use Control MS4 Operator,or by a duly authorized 1. the SWPPP Preparer Certification Form,Appendix F, representative of that person in accordance with signed by the SWPPP preparer;and Part VII.J.2.;or 11 12 Part I.D.2.b.ii.2.b. Part I.D.3.c. b. if within the municipal boundaries of NYC:The c. If Traditional Land Use Control MS4 Operator(s)have review authority City of New York Department of Environmental in accordance with Part I.D.2.b.ii.2.,the owner or operator must,within Protection(NYCDEP)SWPPP five business days of receipt of the LOA,send an electronic copy of the Acceptance/Approval Form,Appendix H,signed LOA to the Traditional Land Use Control M34 Operator(s)with review by the principal executive officer or ranking elected authority. official from the Traditional Land Use Control MS4 Operator,or by a duly authorized representative of E. General Requirements for Owners or Operators with Permit Coverage that person in accordance with Part VII.J.2.;and 1. As of the date the LOA is received,the owner or operator must make the 3. if the Traditional Land Use Control MS4 Operator does eNO1,SWPPP,and LOA available for review and copying in accordance with not have review authority,have the MS4 No Jurisdiction the requirements in Part VI I.H.When applicable,as of the date an updated Form,Appendix I,signed by the principal executive LOA is received,the owner or operator must make the updated LOA available officer or ranking elected official from the Traditional Land for review and copying in accordance with the requirements in Part VII.H. Use Control MS4 Operator,or by a duly authorized representative of that person in accordance with Part 2. The owner or operator must ensure compliance with all requirements of this VII.J.2. permit and that the provisions of the SWPPP,including any changes made to the SWPPP in accordance with Part III.A.S.,are properly implemented and 3. Submitting an eNO1: maintained from the commencement of construction activity until: a. The owner or operator must submit a complete Notice of Intent a. all areas of disturbance have achieved final stabilization;and electronically using a NYSDEC approved form.2 b. the owner's or operator's coverage under this permit is terminated in b. The owner or operator is authorized to commence construction activity accordance with Part V.A.S.a. as of the authorization date indicated in the Letter of Authorization (LOA),which is sent by NYSDEC after a complete eNO1 is submitted. 3. As of the date of the commencement of construction activities until Part 1.E.2.a.and b.have been met,the owner or operator must maintain at the 1. If an eNO1 is received for a SWPPP that deviates from one of construction site,a copy of: the technical standards but demonstrates equivalence in accordance with Part III.B.1.a.ii.or Part III.13.2.b.ii.,if the a. all documentation necessary to demonstrate eligibility with this permit;and SWPPP includes construction activities that are not within the municipal boundary(ies)of Traditional Land Use Control MS4 b. this permit;and Operator(s),and/or if the SWPPP includes construction activities within the municipal boundary(ies)of Traditional Land c. the SWPPP;and Use Control MS4 Operator(s)that do not have review authority in accordance with Part I.D.2.b.ii.1.,the authorization date d. the signed SWPPP Preparer Certification Form;and indicated in the LOA will be 60 business days after the eNO1 submission date. e. the signed MS4 SWPPP Acceptance Form or signed NYCDEP SWPPP Acceptance/Approval Form or signed MS4 No Jurisdiction Form(when applicable);and z Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c)or(d).All waiver requests must be submitted to Stormwater info@dec.ny.gov or NYSDEC,Bureau of Water Permits,625 Broadway,4' f. the signed Owner/Operator Certification Form;and Floor,Albany,New York 12233-3505. 13 14 Part I.E.3.g. Part I.E.6.a.i. g. the eNOI;and I. NYSDEC's Regional Office Division of Water staff based on the project location,Appendix E,if a Traditional Land Use Control MS4 h. the LOA;and Operator does not have review authority in accordance with Part I.D.2.b.ii.1.;or I. the LOA transmittal to the Traditional Land Use Control MS4 Operator in accordance with Part I.D.3.c.(when applicable). ii. the Traditional Land Use Control MS4 Operator,if a Traditional Land Use Control MS4 Operator has review authority in 4. The owner or operator must maintain at the construction site,until Part accordance with Part I.D.2.b.ii.1.;or I.E.2.a.and b.have been met,as of the date the documents become final or are received,a copy of the: iii. NYSDEC's Regional Office Division of Water staff based on the project location,Appendix E,and each involved Traditional Land a. responsible contractor's or subcontractor's certification statement(s)in Use Control MS4 Operator,if the project spans multiple accordance with Part III.A.7.;and municipalities with more than one Traditional Land Use Control MS4 Operator involved with review authority in accordance with b. inspection reports in accordance with Part IV.C.4.and 6.;and Part I.D.2.b.ii.1. c. Request to Disturb Greater Than Five Acres and the Authorization Letter b. The written Request to Disturb Greater Than Five Acres must include: to Disturb Greater Than Five Acres in accordance with Part I.E.6.(when applicable);and i. The SPDES permit identification number(Permit ID);and d. Request to Continue Coverage and the Letter of Continued Coverage ii. Full technical justification demonstrating why alternative methods of (LOCC)in accordance with Part I.F.2.and 4.(when applicable);and construction that would result in five acres of soil disturbance or less at any one time are not feasible;and e. The updated LOA(s)in accordance with Part I.E.9.(when applicable). iii. The phasing plan for the project and sequencing plans for all 5. The owner or operator must maintain the documents in Part I.E.3.and 4.in a phases from the SWPPP in accordance with Part I I I.B.1.d.;and secure location,such as a job trailer,on-site construction office,or mailbox with lock.The secure location must be accessible during normal business iv. Plans with locations and details of erosion and sediment control hours to an individual performing a compliance inspection.The documents practices such that the heightened concern for erosion when must be paper documents unless electronic documents are accessible to the disturbing greater than five acres at one time has been addressed; inspector during an inspection to the same extent as a paper copy stored at and the site would be.If electronic documents are kept on site,the owner or operator must maintain functional equipment on site available to an inspector v. Acknowledgment that"the owner or operator will comply with the during normal hours of operation such that an inspector may view the electronic documents in a format that can be read in a similar manner as a requirements in Part IV.C.2.b.";and paper record and in a legally dependable format with no less evidentiary value than their paper equivalent. vi. Acknowledgment that"the owner or operatorwill comply with the requirements in Part 11.6.1.b." 6. The owner or operator must meet the following requirements prior to disturbing greater than five acres of soil at any one time: c. The owner or operator must be in receipt of an Authorization Letter to Disturb Greater Than Five Acres,which will include when the a. The owner or operator must submit a written Request to Disturb Greater Than Five Acres to: 15 16 Part I.E.6.c. Part I.F. authorization begins and ends and indicate a maximum area(acres)of F. Permit Coverage for Discharges Authorized Under GP-0.20-001 soil disturbance allowed at any one time,from: When applicable: i. NYSDEC,if Part I.E.6.a.i.or iii.apply;or 1. Upon the effective date of this permit,an owner or operator of a construction it. the Traditional Land Use Control MS4 Operator,if Part I.E.6.a.ii. activity,with coverage under GP-0-20-001,will have interim coverage under applies. GP-0-25-001 for 45 calendar days starting on the effective date of GP-0-25- 001 so long as the owner or operator maintains compliance with all applicable 7. Upon a finding of significant non-compliance with the practices described in requirements of this permit. the SWPPP or violation of this permit,NYSDEC may order an immediate stop to all construction activity at the site until the non-compliance is remedied. 2. Within 30 calendar days of the effective date of this permit,the owner or The stop work order must be in writing,describe the non-compliance in detail, operator,with coverage under GP-0-20-001,must submit a complete Request and be sent to the owner or operator. to Continue Coverage electronically using a NYSDEC approved form,°which contains the information identified in Part I.F.3.below,if: 8. If any human remains or archaeological remains are encountered during excavation,the owner or operator must immediately cease,or cause to a. the owner or operator continues to implement the SMP component in cease,all construction activity in the area of the remains and notify the conformance with the technical standards in place at the time of initial appropriate Regional Water Engineer(RWE).3 Construction activity shall not project authorization;and resume until written permission to do so has been received from the RWE. b. the owner oroperatorwill comply with all non-design requirements of GP- 9. To be authorized to implement modifications to the information previously 0-25-001. submitted in the eNO1,the owner or operator must: 3. The Request to Continue Coverage form contains questions to:ensure a. notify NYSDEC via email at Stormwater_info@dec.ny.gov requesting eligibility requirements in Part I.A.have been met;verify owner or operator access to update the eNO1;and contact information;verify the permit identification number;verify the original eNO1 submission ID,if applicable;verify Part I.F.2.a.and b.;verify the version b. update the eNO1 to reflect the modifications and resubmit the eNO1 in of the Design Manual that the technical/design components conform to;and accordance with Part I.D.;and receive an updated Owner/Operator Certification Form,Appendix I. c. receive an updated LOA. 4. The owner or operator has obtained continued coverage under GP-0-25-001 10.The eNO1,SWPPP,LOA,updated LOAs(when applicable),and inspection as of the date indicated in the LOCC,which is sent by NYSDEC after a reports required by this permit are public documents that the owner or complete Request to Continue Coverage form is submitted. operator must make available for review and copying by any person within five business days of the owner or operator receiving a written request by any 5. If the owner or operator does not submit the Request to Continue Coverage such person to review these documents.Copying of documents will be done form in accordance with Part I.F.2.and 3.,coverage under this permit is at the requester's expense. automatically terminated after interim coverage expires. 4 Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c)or(d).All waiver requests must be submitted to Stormwater info@dec.ny.gov or NYSDEC,Bureau of Water Permits,625 Broadway,4' 3 The Regional Water Manager where a DEC Region does not have a RWE. Floor,Albany,New York 12233-3505. 17 18 Part I.G. Part II. G.Change of Owner or Operator Part II.Water Quality-Based Effluent Limitations When applicable: A. Maintaining Water Quality 1. When property ownership changes,or when there is a change in operational control over the construction plans and specifications,the following process NYSDEC expects that compliance with the requirements of this permit will control applies: discharges necessary to meet applicable water quality standards.It shall be a violation of the ECL for any discharge to either cause or contribute to a violation a. The new owner or operator must meet the applicable prerequisites for of the following water quality standards as contained in Parts 700 through 705 of submitting an eNO1 in accordance with Part I.D.2.;and Title 6 of the Official Compilation of Codes,Rules and Regulations of the State of New York: b. The new owner or operator must submit an eNO1 in accordance with Part I.D.3.;and 1. There must be no increase in turbidity that will cause a substantial visible contrast to natural conditions;and c. Permit coverage for the new owner or operator will be effective upon receipt of the LOA in accordance with Part I.D.3.b.;and 2. There must be no increase in suspended,colloidal or settleable solids that will cause deposition or impair the waters for their best usages;and d. The new owner or operator,upon receipt of their LOA,must provide their Permit ID to the original owner or operator,and 3. There must be no residue from oil and floating substances,nor visible oil film, nor globules of grease. e. If the original owner or operator will no longer be the owner or operator of If there is evidence indicating that the stormwater discharges authorized by this the construction activity identified in the original owner's or operator's permit are causing,have the reasonable potential to cause,or are contributing to eNO1,the original owner or operator,upon receipt of the new owner's or a violation of the water quality standard,the owner or operator must take operator's Permit ID in accordance with Part I.G.1.d.,must submit to appropriate corrective action in accordance with Part IV.C.S.of this permit and NYSDEC a completed eNOT in accordance with Part V.that includes the document in accordance with Part IV.C.4.of this permit.To address the water name and Permit ID of the new owner or operator,or quality standard violation the owner or operator must include and implement appropriate controls in the SWPPP to correct the problem or obtain an individual f. If the original owner or operator maintains ownership of a portion of the SPDES permit. construction activity,the original owner or operator must maintain their coverage under the permit by modifying their eNO1;modifications to the If,despite compliance with the requirements of this permit,it is demonstrated that eNO1 must include: the stormwater discharges authorized by this permit are causing or contributing to a violation of water quality standards,or if NYSDEC determines that a i. the revised area of disturbance and/or impervious area(s);and modification of this permit is necessary to prevent a violation of water quality standards,the authorized discharges will no longer be eligible for coverage under this permit,and the owner or operator must obtain an individual SPDES permit ii. the revised SMP information,if applicable;and prior to further discharges from the construction site. iii. a narrative description of what has changed;and B. Effluent Limitations Applicable to Discharges from Construction Activities iv. the new owner's or operator's Permit ID for the portion of the Discharges authorized by this permit must achieve,at a minimum,the effluent project removed from the eNO1. limitations in Part II.B.1.a.,b.,c.,d.,and e.These limitations represent the Owners or operators must follow Part I.E.9.to modify the eNO1. 19 20 Part II.B. Part II.B.1.a.vii. degree of effluent reduction attainable by the application of best practicable where the intended function of a specific area of the site dictates that technology currently available. it be compacted;and 1. Erosion and Sediment Control Requirements-The owner or operator must viii. Unless infeasible,preserve a sufficient amount of topsoil to complete select,design,install,implement,and maintain control measures to minimize soil restoration and establish a uniform,dense vegetative cover;and the discharge of pollutants and prevent a violation of the water quality standards.The selection,design,installation,implementation,and ix. Minimize dust.On areas of exposed soil,minimize dust through the maintenance of these control measures must meet the non-numeric effluent appropriate application of water or other dust suppression techniques limitations in Part c., and e.and be in accordance with the to control the generation of pollutants that could be discharged from New York State Standards s and Specifications for Erosion and Sediment the site. Control(BB),dated November 2016,using sound engineering judgment. Where control measures are not designed in conformance with the design b. Soil Stabilization.In areas where soil disturbance activity has ceased, criteria included in the technical standard,the owner or operator must include whether permanently or temporarily ceased,the application of soil in SWPPP the reason(s)for the deviation,or alterative design,and provide stabilization measures must be initiated by the end of the next business information in the SWPPP demonstrating that the deviation or alternative day and completed within 14 calendar days from the date the current soil design is equivalent to the technical standard. disturbance activity ceased.For construction sites that directly discharge a. Erosion and Sediment Controls.At a minimum,erosion and sediment to one of the 303(d)segments listed in Appendix D,or are located in one controls must be selected,designed,installed,implemented,and of the watersheds listed in Appendix C,or are authorized to disturb greater maintained to: than five acres in accordance with Part I.E.5.a.viii.,the application of soil stabilization measures must be initiated by the end of the next business i. Minimize soil erosion through application of runoff control and soil day and completed within seven calendar days from the date the soil stabilization control measure to minimize pollutant discharges;and disturbance activity ceased. ii. Control stormwater discharges,including both peak flow rates and c. Dewatering.Discharges from dewatedng activities,including discharges total stormwater volume,to minimize channel and streambank from dewatering of trenches and excavations,must be managed by appropriate control measures. erosion and scour in the immediate vicinity of the discharge points; and d. Pollution Prevention Measures.Select,design,install,implement,and iii. Minimize the amount of soil exposed during construction activity; maintain effective pollution prevention measures to minimize the and discharge of pollutants and prevent a violation of the water quality standards.At a minimum,such measures must be selected,designed, iv. Minimize the disturbance of steep slope;and installed,implemented,and maintained to: v. Minimize sediment discharges from the site;and i. Minimize the discharge of pollutants from equipment and vehicle washing,wheel wash water,and other wash waters.Soaps, vi. Provide and maintain natural buffers around surface waters,direct detergents and solvents cannot be used;and stormwater to vegetated areas and maximize stormwater infiltration ii. Minimize the exposure of building materials,building products, to reduce pollutant discharges,unless infeasible;and construction wastes,trash,landscape materials,fertilizers, vii. Minimize soil compaction.Minimizing soil compaction is not required pesticides,herbicides,detergents,sanitary waste,hazardous and toxic waste,and other materials present on the site to precipitation 21 22 Part II.B.1.d.ii. Part II.C.2.a.i.2. and to stormwater.Minimization of exposure is not required in 2. Minimum RRv and Treatment of Remaining Total WQv: cases where the exposure to precipitation and to stormwaterwill Construction activities that cannot meet the requirements in not result in a discharge of pollutants,or where exposure of a Part II.C.2.a.i.1.due to site limitations must direct runoff from specific material or product poses little risk of stormwater all newly constructed impervious areas to a RR technique or contamination(such as final products and materials intended for standard SMP with RRv capacity unless infeasible.The outdoor use);and specific site limitations that prevent the reduction of 100%of the WQv must be documented in the SWPPP.For each iii. Prevent the discharge of pollutants from spills and leaks and impervious area that is not directed to a RR technique or implement chemical spill and leak prevention and response standard SMP with RRv capacity,the SWPPP must include procedures. documentation which demonstrates that all options were considered and for each option explains why it is considered e. Surface Outlets.When discharging from basins and impoundments,the infeasible. surface outlets must be designed,constructed,and maintained in such a manner that sediment does not leave the basin or impoundment and that In no case shall the runoff reduction achieved from the erosion at or below the outlet does not occur. newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section C. Post-Construction Stormwater Management Practice(SMP)Requirements 4.4 of the DM.The remaining portion of the total WQv that cannot be reduced must be treated by application of 1. The owner or operator of a construction activity that requires post- standard SMPs. construction SMPs,in accordance with Part III.C.,must select,design,install, implement,and maintain the SMPs to meet the performance criteria in the ii. Channel Protection Volume(CPv):Provide 24 hour extended New York State Stormwater Management Design Manual,dated July 31, detention of the post-developed 1-year,24-hour storm event, 2024(DM),using sound engineering judgment.Where SMPs are not remaining after runoff reduction.Where a CPv control orifice is designed in conformance with the performance criteria in the DM,the owner provided,the minimum orifice size must be 3 inches,with or operator must include in the SWPPP the reason(s)for the deviation or acceptable external trash rack or orifice protection.The CPv alternative design and provide information which demonstrates that the requirement does not apply when: deviation or alternative design is equivalent to the technical standard. 1. Reduction of the entire CPv is achieved by application of 2. The owner or operatorof a construction activity,that requires SMPs in runoff reduction techniques or infiltration systems;or accordance with Part III.C.,must design the practices to meet the applicable sizing criteria in Part II.C.2.a.,b.,c.,or d. 2. The 1-year post-development peak discharge is less than or equal to 2.0 cfs without detention or velocity controls;or a. Sizing Criteria for New Development 3. The site directly discharges into a fifth order or larger water I. Runoff Reduction Volume(RRv)and Water Quality Volume(WQv): body(stream,river,or lake),or tidal waters,where the increase in smaller flows will not impact the stream bank or 1. Reduce the total WQv by application of RR techniques and channel integrity.However,the point of discharge must be standard SMPs with RRv capacity.The total WQv must be adequately protected against scour and erosion by the calculated in accordance with the criteria in Section 4.2 of increased peak discharge. the DM;or 23 24 Part II.C.2.a.iii. Part II.C.2.1b.i.2. iii. Overbank Flood Control Criteria(Qp):Requires storage to documentation which demonstrates that all options were attenuate the post-development 10-year,24-hour peak discharge considered and for each option explains why it is considered rate(Qp)to predevelopment rates.The Qp requirement does not infeasible. apply when: In no case shall the runoff reduction achieved from the 1. the site directly discharges to tidal waters or fifth order or newly constructed impervious areas be less than the larger streams,or Minimum RRv as calculated using the criteria in Section 4.5 of the DM.The remaining portion of the total WQv that 2. A downstream analysis reveals that overbank control is not cannot be reduced must be treated by application of required. standard SMPs. iv. Extreme Flood Control Criteria(Qf):Requires storage to attenuate ii. Channel Protection Volume(CPv):Provide 24 hour extended the post-development 100-year,24-hour peak discharge rate(Qf) detention of the post-developed 1-year,24-hour storm event, to predevelopment rates.The Qf requirement does not apply when: remaining after runoff reduction.Where a CPv control orifice is provided,the minimum orifice size must be 3 inches,with 1. the site directly discharges to tidal waters or fifth order or acceptable external trash rack or orifice protection.The CPv larger streams,or requirement does not apply when: 2. A downstream analysis reveals that overbank control is not 1. Reduction of the entire CPv is achieved by application of required. runoff reduction techniques or infiltration systems;or b. Sizing Criteria for New Development in Enhanced Phosphorus 2. The 1-year post-development peak discharge is less than or Removal Watersheds equal to 2.0 cfs;or i. Runoff Reduction Volume(RRv)and Water Quality Volume(WQv): 3. The site directly discharges to tidal waters,or a fifth order or larger water body(stream,river,or lake)where the increase 1. Reduce the WQv by application of RR techniques and in smaller flows will not impact the stream bank or channel standard SMPs with RRv capacity.The total WQv is the integrity.However,the point of discharge must be runoff volume from the 1-year,24-hour design storm over adequately protected against scour and erosion by the the post-developed watershed and must be calculated in increased peak discharge. accordance with the criteria in Section 4.3 of the DM;or iii. Overbank Flood Control Criteria(Qp):Requires storage to 2. Minimum RRv and Treatment of Remaining Total WQv: attenuate the post-development 10-year,24-hour peak discharge Construction activities that cannot meet the criteria in Part rate(Qp)to predevelopment rates.The Qp requirement does not II.C.2.b.i.1.due to site limitations must direct runoff from all apply when: newly constructed impervious areas to a RR technique or standard SMP with RRv capacity unless infeasible.The 1. the site directly discharges to tidal waters or fifth order or specific site limitations that prevent the reduction of 100%of larger streams;or the WQv must be documented in the SWPPP.For each impervious area that is not directed to a RR technique or 2. A downstream analysis reveals that overbank control is not standard SMP with RRv capacity,the SWPPP must include required. 25 26 Part II.C.2.1b.iv. Part II.C.2.c.i.5. iv. Extreme Flood Control Criteria(Qf):Requires storage to attenuate 5. Application of a combination of 1 through 4 above that the post-development 100-year,24-hour peak discharge rate(Qf) provide a weighted average of at least two of the above to predevelopment rates.The Qf requirement does not apply when: methods.Application of this method must be in accordance with the criteria in Section 9.2.1(A)(V)of the DM;or 1. the site directly discharges to tidal waters or fifth order or larger streams;or 6. If there is an existing SMP located on the site that captures and treats runoff from the impervious area that is being 2. A downstream analysis reveals that overbank control is not disturbed,the WQv treatment option selected must,at a required. minimum,provide treatment equal to the treatment that was being provided by the existing practice(s)if that treatment is c. Sizing Criteria for Redevelopment Activity greater than the treatment required by options 1 through 5 above. i. Water Quality Volume(WQv):The WQv treatment objective for redevelopment activity must be addressed by one of the following ii. Channel Protection Volume(CPv)is not required if there is 0% options,as outlined in Section 9.2.1.Redevelopment activities change to hydrology that increases the discharge rate and volume located in an Enhanced Phosphorus Removal Watershed(see Part from the project site. III.B.3.and Appendix C)must calculate the WQv in accordance with Section 4.3 of the DM.All other redevelopment activities must iii. Overbank Flood Control(Qp)is not required if there is 0%change calculate the WQv in accordance with Section 4.2 of the DM. to hydrology that increases the discharge rate from the project site. 1. Reduce the existing impervious cover by a minimum of 25% iv. Extreme Flood Control(Qf)is not required if there is 0%change to of the total disturbed,impervious area.The Soil Restoration hydrology that increases the discharge rate from the project site. criteria in Section 5.1.6 of the DM must be applied to all newly created pervious areas;or d. Sizing Criteria for Combination of Redevelopment Activity and New 2. Capture and treat 100%of the required WQv,for a minimum Development of 25%of the disturbed redevelopment impervious area,by Construction projects,that include both new development and redevelopment implementation of standard SMPs or reduced by application activity,must use SMPs that meet the sizing criteria calculated as an of runoff reduction techniques;or aggregate of the sizing criteria in Part II.C.2.a.or b.for the new development portion of the project and Part II.C.2.c.for the redevelopment activity portion 3. Capture and treat 100%of the required WQv,for a minimum of the project. of 75%of the disturbed redevelopment impervious area,by implementation of a volume-based alternative SMP,as defined in Section 9.4 of the DM;or Part III.Stormwater Pollution Prevention Plan(SWPPP) 4. Capture and treat 100%of the required WQv,for a minimum A. General SWPPP Requirements of 75%of the disturbed redevelopment impervious area,by implementation of a flow-through alternative SMP sized to 1. A SWPPP must be prepared and implemented by the owner or operator of all treat the peak rate of runoff from the WQv design storm;or construction activity covered by this permit.All authorized discharges must be identified in the SWPPP.The SWPPP must document the selection,design, installation,implementation and maintenance of the control measures and 27 28 Part III.A.1. Part III.A.3. practices that will be used to meet the effluent limitations in Part II.B.and, requirements of this permit.In addition,the SWPPP must identify potential where applicable,the SMP requirements in Part II.C. sources of pollution which may reasonably be expected to affect the quality of stormwater discharges. 2. The SWPPP must demonstrate consideration in narrative format of the future physical risks due to climate change pursuant to the Community Risk and 4. All SWPPPs,that require the SMP component in accordance with Part Resiliency Act(CRRA),6 NYCRR Part 490,and associated guidance. III.B.2.,must be prepared by a qualified professional. a. The owner or operator must consider: 5. The owner or operator must keep the SWPPP current so that,at all times,it accurately documents the erosion and sediment control practices that are I. the following physical risks due to climate change: being used or will be used during construction,and all SMPs that will be constructed on the site.At a minimum,the owner or operator must modify the (i) increasing temperature;and SWPPP,including construction drawings: (ii) increasing precipitation;and a. whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharges from the site;and (III) increasing variability in precipitation,including chance of drought;and b. whenever there is a change in design,construction,or operation at the construction site that has or could have an effect on the discharge of (iv) increasing frequency and severity of flooding;and pollutants;and (v) rising sea level;and c. to address issues or deficiencies identified during an inspection by the qualified inspector,NYSDEC,or other regulatory authority;and (vi) increasing storm surge;and d. to document the final construction conditions in an as-built drawing. (vii) shifting ecology. 6. NYSDEC may notify the owner or operator at any time that the SWPPP does ii. for each of the following: not meet one or more of the minimum requirements of this permit.The notification must be in writing and identify the provisions of the SWPPP that (i) overall site planning;and require modification.Within fourteen(14)calendar days of such notification, or as otherwise indicated by NYSDEC,the owner or operator must make the (ii) location,elevation,and sizing of: required changes to the SWPPP and submit written notification to NYSDEC that the changes have been made.If the owner or operator does not respond a. control measures and practices;and to NYSDEC's comments in the specified time frame,NYSDEC may suspend the owner's or operators coverage under this permit or require the owner or b. conveyance system(s);and operatorto obtain coverage under an individual SPDES permit in accordance with Part II.D.4. c. detention system(s). 7. Prior to the commencement of construction activity,the owner or operator 3. The SWPPP must describe the erosion and sediment control practices and must identify the contractor(s)and subcontractor(s)that will be responsible for where required,SMPs that will be used and/or constructed to reduce the installing,constructing,repairing,replacing,inspecting,and maintaining the pollutants in stormwater discharges and to assure compliance with the erosion and sediment control practices included in the SWPPP and the 29 30 Part III.A.7. Part III.B. contractor(s)and suboontracton s)that will be responsible for constructing the B. Required SWPPP Contents SMPs included in the SWPPP.The owner or operator must have each of the contractors and subcontractors identify at least one person from their 1. Erosion and sediment control component-The owner or operator must company to be trained contractorthat will be responsible for implementation prepare a SWPPP that includes erosion and sediment control practices. of the SWPPP.The owner or operator must ensure that at least one trained contractor is on site daily when soil disturbance activities are being a. Erosion and sediment control practices must be designed: performed. i. in conformance with the BB;or The owner or operator must have each of the contractors and subcontractors identified above sign a copy of the following certification statement below ii. equivalent to the BB if deviating from Part III.B.1.a.i. before the commencement of construction activities: b. If the erosion and sediment control practices are designed in conformance "I hereby certify under penalty of law that I understand and agree to with Part III.B.1.a.ii.,the SWPPP must include a demonstration of comply with the requirements of the SWPPP and agree to implement any equivalence to the BB. corrective actions identified by the qualified inspector during a site inspection.I also understand that the owner or operator must comply with c. At a minimum,the erosion and sediment control component of the the requirements of the most current version of the New York State SWPPP must include the following: Pollutant Discharge Elimination System(SPDES)Construction General Permit(CGP)for Stormwater Discharges from Construction Activities and i. Background information about the scope of the project,including that it is unlawful for any person to cause or contribute to a violation of the location,type and size of project;and water quality standards.Furthermore,I am aware that there are significant penalties for submitting false information,that I do not believe to be true, ii. A site map/construction drawing(s)with north arrows for the project, including the possibility of fine and imprisonment for knowing violations" including a general location map.At a minimum,the site map must show the total site area;all improvements;areas of disturbance; In addition to providing the certification statement above,the certification areas that will not be disturbed;existing vegetation;on-site and page must also identify the specific elements of the SWPPP that each adjacent off-site surface water(s);floodplain/floodway boundaries; contractor and subcontractor will be responsible for and include the name and wetlands and drainage patterns that could be affected by the title of the person providing the signature;the name and title of the trained construction activity;existing and final contours;locations of contractor responsible for SWPPP implementation;the name,address and different soil types with boundaries;material,waste,borrow or telephone number of the contracting firm;the address(or other identifying equipment storage areas located on adjacent properties;and description)of the site;and the date the certification statement is signed.The location(s)of the stormwater discharge(s)and receiving surface owner or operator must attach the certification statement(s)to the copy of the water(s);and SWPPP that is maintained at the construction site.If new or additional contractors are hired to implement measures identified in the SWPPP after iii. A description of the soil(s)present at the site,including an the commencement of construction activities,they must also sign the identification of the Hydrologic Soil Group(HSG);and certification statement and provide the information listed above prior to performing construction activities. iv. A phasing plan for the project and sequencing plans for all phases, both of which must address clearing and grubbing,excavation and grading,utility and infrastructure installation,final stabilization, 31 32 Part III.B.1.c.iv. Part III.B.1.c.vii. and any other construction activity at the site that will result in soil temporary sediment basins and structural practices that will be disturbance. used to divert flows from exposed soils;and 1. The phasing plan must include: viii. A maintenance inspection schedule for the contractor(s)and subcontractor(s)identified in Part III.A.7.to ensure continuous and a. a map delineating and labeling the limits of soil effective operation of the erosion and sediment control practices. disturbance for all phases of a project;and The maintenance inspection schedule must be in accordance with the requirements in the BB technical standard;and b. a table identifying the order and intended schedule of when each phase will begin and end its sequencing ix. A description of the pollution prevention measures that will be used plan.The table must identify the total disturbed area to control litter,construction chemicals and construction debris from for each phase at any one time and the total disturbed becoming a pollutant source in the stormwater discharges;and area for the overall project at any one time all on one timeline showing all overlapping quantities of x. A description and location of any stormwater discharges associated disturbed area at any one time;and with industrial activity other than construction at the site,including, but not limited to,stormwater discharges from asphalt plants and 2. A sequencing plan for a specific phase must include: concrete plants located on the construction site;and a. a table indicating the order and intended schedule of A. Identification of any elements of the design that are not in construction activities within a phase,and conformance with the design criteria in the BB technical standard. corresponding construction drawings with a Include the reason for the deviation or alternative design and description of the work to be performed;and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. b. all permanent and temporary stabilization measures; and 2. SMP component—The owner or operator of construction activity identified in Table 2 of Appendix B must prepare a SWPPP that includes SMPs. v. A description of the minimum erosion and sediment control practices to be installed or implemented for each construction a. SMPs must be designed in conformance with the applicable sizing criteria activity that will result in soil disturbance.Include a schedule that in Part II.C.2.a.,c.,or d.;and identifies the timing of initial placement or implementation of each erosion and sediment control practice and the minimum time b. SMPs must be designed in conformance with the performance criteria: frames that each practice should remain in place or be implemented;and I. in the DM;or vi. A site map/construction drawing(s)showing the specific location(s), ii. equivalent to the DM if deviating from Part III.6.2.1b.i.;or size(s),and length(s)of each erosion and sediment control practice;and iii. in the New York State Stormwater Management Design Manual, dated January 2015(2015 Design Manual),or equivalent to it,if the vii. The dimensions,material specifications,installation details,and following criteria are met: operation and maintenance requirements for all erosion and sediment control practices.Include the location and sizing of any 33 34 Part III.B.2.b.iii.1. Part III.B.2.e.iii. 1. The eNO1 is submitted in accordance with Part I.D.before iii. A Stonnwater Modeling and Analysis Report that includes: January 29,2027 for construction activities that are either: (i) Map(s)showing pre-development conditions,including a. subject to governmental review and approval: watershed/subcatchments boundaries,flow paths/routing,and design points;and I. where the owner or operator made any application to that governmental entity prior to (ii) Map(s)showing post-development conditions,including the effective date of this permit;and watershed/subcatchments boundaries,flow paths/routing,design points and SMPs;and ii. such application included a SWPPP developed using the 2015 Design Manual or equivalent to (iii) Results of stormwater modeling(i.e.hydrology and it;or hydraulic analysis)for the required storm events.Include supporting calculations(model runs),methodology,and a b. not subject to governmental review and approval: summary table that compares pre-and post-development runoff rates and volumes for the different storm events; I. where a fiscal allocation for the construction and activities has been developed and approved by a governmental entity;and (iv) Summary table,with supporting calculations,which demonstrates that each SMP has been designed in ii. the SWPPP was developed using the 2015 conformance with the sizing criteria included in the DM; Design Manual or equivalent to it;and and c. If SMPs are designed in conformance with Part III.B.2.b.ii.,the SWPPP (v) Identification of any sizing criteria that is not required must include the reason(s)for the deviation or alternative design and a based on the requirements included in Part II.C.;and demonstration of equivalence to the DM;and (vi) Identification of any elements of the design that are not in d. If SMPs are designed in conformance with Part III.B.2.b.iii.,the SWPPP conformance with the performance criteria in the DM. must include supporting information or documentation demonstrating that Include the reason(s)for the deviation or alternative Part III.B.2.b.iii.1.a.orb.apply;and design and provide information which demonstrates that the deviation or alternative design is equivalent to the e. The SMP component of the SWPPP must include the following: DM. I. Identification of all SMPs to be constructed as part of the project, iv. Soil testing results and locations(test pits,borings);and including which option the SMP designs conform to,either Part III.B.2.b.i.,ii.,or iii.Include the dimensions,material specifications v. Infiltration test results,when required in accordance with Part and installation details for each SMP;and III.B.2.a.;and ii. A site map/construction drawing(s)showing the specific location vi. An operations and maintenance plan that includes inspection and and size of each SMP;and maintenance schedules and actions to ensure continuous and effective operation of each SMP.The plan must identify the entity 35 36 Part III.B.2.e.vi. Part IV.B.1. that will be responsible for the long-term operation and implemented within the active work area daily to ensure that they are being maintenance of each practice;and maintained in effective operating condition at all times.If deficiencies are identified,the contractor must: 3. Enhanced Phosphorus Removal Standards-The owner or operator of construction activity identified in Table 2 of Appendix B that is located in a a. if the corrective action does not require engineering design: watershed identified in Appendix C must prepare a SWPPP that includes SMPs designed in conformance with the applicable sizing criteria in Part i. begin implementing corrective actions within one business day;and II.C.2.b.,c.,or d.and the performance criteria Enhanced Phosphorus Removal Standards included in the DM.At a minimum,the SMP component ii. complete the corrective actions within five business days;or of the SWPPP must meet the requirements of Part III.B.2. C. Required SWPPP Components by Project Type b. if the corrective action requires engineering design: Owners or operators of construction activities,identified in Table 1 of Appendix i. begin the engineering design process within five business days; and B,are required to prepare a SWPPP that only includes erosion and sediment control practices designed in accordance with Part III.B.1.Owners or operators of ii. complete the corrective action in a reasonable time frame but no the construction activities,identified in Table 2 of Appendix B,must prepare a later than within 60 calendar days. SWPPP that also includes SMPs designed in accordance with Part 111.13.2 or 3. 2. For construction sites where soil disturbance activities have been temporarily For the entire area of disturbance,including the entire common plan of suspended development or sale if applicable,the owner or operator must evaluate every winter shutdown)and temporary stabilization measures have bullet from Appendix B Table 1 and Table 2 separately.If bullets from both Table been appliedd t to o all disturbed areas,the trained contractor can stop conducting the maintenance inspections in accordance with Part .The trained 1 and Table 2 apply,the SWPPP must include erosion and sediment control practices for all construction activities but SMPs for only those portions of the contractor must begin conducting the maintenance inspections in accordance with Part IV.6.1.as soon as soil disturbance activities resume. construction activities that fall under Table 2 bullet(s). 3. For construction sites where soil disturbance activities have been shut down with partial project completion,the trained contractor can stop conducting the Part IV.Inspection and Maintenance Requirements maintenance inspections in accordance with Part IV.B.1.if all areas disturbed as of the project shutdown date have achieved final stabilization and all SMPs A. General Construction Site Inspection and Maintenance Requirements required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. 1. The owner or operator must ensure that all erosion and sediment control C. Qualified Inspector Inspection Requirements practices(including pollution prevention measures),and all SMPs identified in the SWPPP,are inspected and maintained in accordance with Part IV.B.and 1. With the exception of the following construction activities identified in Tables 1 C. and 2 of Appendix B,a qualified inspector must conduct site inspections for all other construction activities identified in Tables 1 and 2 of Appendix B: B. Contractor Maintenance Inspection Requirements a. the construction of asingle-family residential subdivision with 25%or less 1. The owner or operator of each construction activity,identified in Tables 1 and impervious cover at total site build-out that involves a soil disturbance of 2 of Appendix B,must have a trained contractor inspect the erosion and one(1)or more acres of land but less than or equal to five(5)acres and is sediment control practices and pollution prevention measures being 37 38 Part IV.C.1.a. Part IV.C.2.d. not located in one of the watersheds listed in Appendix C and not directly d. For construction sites where soil disturbance activities have been shut discharging to one of the 303(d)segments listed in Appendix I);and down with partial project completion,the requirement to have the qualified inspector conduct inspections ceases if all areas disturbed as of the b. the construction of a single-family home that involves soil disturbances of project shutdown date have achieved final stabilization and all SMPs one(1)or more acres but less than or equal to five(5)acres and is not required for the completed portion of the project have been constructed in located in one of the watersheds listed in Appendix C and not directly conformance with the SWPPP and are operational.The owner or operator discharging to one of the 303(d)segments listed in Appendix D;and must notify the DOW Water(SPDES)Program contact at the Regional Office(see contact information in Appendix E)or,in areas subject to the c. construction on agricultural property that involves soil disturbances of one review authority of Traditional Land Use Control MS4 Operator(s)in (1)or more acres but less than five(5)acres;and accordance with Part I.D.2.1b.ii.1.,the Traditional Land Use Control MS4 Operators)(provided the Traditional Land Use Control MS4 Operator(s) d. construction activities located in the New York City Watershed located are not the owners or operators of the construction activity)in writing prior east of the Hudson River,see Appendix C Figure 1,that involve soil to the shutdown and again in writing prior to resuming construction disturbances of 5,000 square feet or more,but less than one acre. activity.If soil disturbance activities are not resumed within 2 years from the date of shutdown,the owner or operator must terminate coverage by 2. The qualified inspector must conduct site inspections in accordance with the meeting the requirements of Part V;or following timetable: e. For construction sites involving soil disturbance of one(1)or more acres a. For construction sites where soil disturbance activities are on-going,the that directly discharge to one of the 303(d)segments listed in Appendix D qualified inspector must conduct a site inspection at least once every or is located in one of the watersheds listed in Appendix C,the qualified seven(7)calendar days;or inspector must conduct at least two(2)site inspections every seven(7) calendar days.The two(2)inspections must be separated by a minimum b. For construction sites where soil disturbance activities are on-going and of two(2)full calendar days. the owner or operator has received authorization in accordance with Part I.E.6.to disturb greater than five(5)acres of soil at any one time,the 3. At a minimum,the qualified inspector must inspect: qualified inspector must conduct at least two(2)site inspections every seven(7)calendar days.The two(2)inspections must be separated by a a. all erosion and sediment control practices and pollution prevention minimum of two(2)full calendar days;or measures to ensure integrity and effectiveness;and c. For construction sites where soil disturbance activities have been b. all SMPs under construction to ensure that they are constructed in temporarily suspended(e.g.winter shutdown)and temporary stabilization conformance with the SWPPP;and measures have been applied to all disturbed areas,the qualified inspector must conduct a site inspection at least once every thirty(30)calendar c. all areas of disturbance that have not achieved final stabilization;and days.The owner or operator must notify the DOW Water(SPDES) Program contact at the Regional Office(see contact information in d. all points of discharge to surface waters of the State located within,or Appendix E)or,in areas under the jurisdiction of a Traditional Land Use immediately adjacent to,the property boundaries of the construction site; Control MS4 Operator,the Traditional Land Use Control MS4 Operator and (provided the Traditional Land Use Control MS4 Operator is not the owner or operator of the construction activity)by hard copy or email prior to e. all points of discharge from the construction site. reducing the inspections to this frequency and again by hard copy or email prior to re-commencing construction;or 39 40 Part IV.C.4. Part IV.C.4.j.i. 4. The qualified inspector must prepare an inspection report subsequent to each I. Total area with active soil disturbance(not requiring either and every inspection.At a minimum,the inspection report must include and/or temporary stabilization or final stabilization);and address all of the following,for all construction activities except those listed in Part IV.C.1.: ii. Total area with inactive soil disturbance(requiring either temporary stabilization or final stabilization);and a. Permit identification number;and iii. Total area that has achieved temporary stabilization;and b. Date and time of inspection;and iv. Total area that has achieved final stabilization;and c. Name and title of person(s)performing inspection;and k. Current stage of construction of all SMPs and identification of all d. A description of the weather and soil conditions(e.g.dry,wet,saturated) construction activity on site that is not in conformance with the SWPPP at the time of the inspection,including the temperature at the time of the and technical standards;and inspection;and I. Corrective action(s)that must be taken to install,repair,replace or e. A description of the condition of the runoff at all points of discharge from maintain erosion and sediment control practices and pollution prevention the construction site.This must include identification of any discharges of measures;and to correct deficiencies identified with the construction of sediment from the construction site.Include discharges from conveyance the SMP(s);and systems(i.e.pipes,culverts,ditches,etc.)and overland Flow;and in.Identification and status of all corrective actions that were required by f. A description of the condition of all surface waters of the State located previous inspection;and within,or immediately adjacent to,the property boundaries of the construction site which receive runoff from disturbed areas.This must n. Digital photographs,with date stamp,that clearly show the condition of all include identification of any discharges of sediment to the surface waters practices that have been identified as needing corrective actions.The of the State;and qualified inspector must attach color copies of the digital photographs to the inspection report being maintained onsite within seven(7)calendar g. Identification of all erosion and sediment control practices and pollution days of the date of the inspection.The qualified inspector must also take prevention measures that need repair or maintenance;and digital photographs,with date stamp,that clearly show the condition of the practices)after the corrective action has been completed.The qualified h. Identification of all erosion and sediment control practices and pollution inspector must attach paper color copies of the digital photographs to the prevention measures that were not installed properly or are not functioning inspection report that documents the completion of the corrective action as designed and need to be reinstalled or replaced;and work within seven(7)calendar days of that inspection. i. Description and sketch(map)of areas with active soil disturbance activity, 5. Within one business day of the completion of an inspection,the qualified areas that have been disturbed but are inactive at the time of the inspector must notify the owner or operator,and appropriate contractor or inspection,and areas that have been stabilized(temporary and/or final) subcontractor identified in Part III.A.7.,of any corrective actions that need to since the last inspection;and be taken.The contractor or subcontractor must: j. Estimates,in square feet or acres,of the following areas: a. if the corrective action does not require engineering design: 41 42 Part IV.C.5.a.i. Part V.A.1.b. I. begin implementing corrective actions within one business day;and b. Planned shutdown with partial project completion: ii. complete the corrective actions within five business days;or i. all soil disturbance activities have ceased;and b. if the corrective action requires engineering design: ii. all areas disturbed as of the project shutdown date have achieved final stabilization;and i. begin the engineering design process within five business days; and iii. all temporary,structural erosion and sediment control measures have been removed;and ii. complete the corrective action in a reasonable time frame but no later than within 60 calendar days. iv. all SMPs required for the completed portion of the project have been constructed in conformance with the SWPPP and are 6. All inspection reports must be signed by the qualified inspector.In operational;and accordance with Part I.E.3.,the inspection reports must be maintained on site with the SWPPP. v. an as-built drawing has been prepared;or c. In accordance with Part I.G.Change of Owner or Operator;or Part V.How to Terminate CGP Coverage d. The owner or operator has obtained coverage under an alternative A. Electronic Notice of Termination(eNOT)Submittal general SPDES permit or an individual SPDES permit. The eNOT contains questions to ensure requirements in Part V.A.have been 2. For construction activities that require qualified inspector inspections in met. accordance with Part IV.C.1.and have met Part V.A.1.a.or b.,the owner or 1. An owner or operator must terminate coverage when one or more of the operator must have the qualified inspector perform a final site inspection prior following requirements have been met: to submitting the eNOT.The qualified inspector must,by signing the"Final Stabilization"and"Post-Construction Stormwater Management Practice(s)" a. Total project completion: certification statements on the eNOT,certify that all the requirements in Part V.A.1.a.or b.have been achieved. i. all construction activity identified in the SWPPP has been 3. For construction activities that are subject to the review authority of completed;and Traditional Land Use Control MS4 Operator(s)in accordance with Part ii. all areas of disturbance have achieved final stabilization;and I.D.2.b.ii.1.and meet Part V.A.1.a.or b.,the owner or operator must have the Traditional Land Use Control MS4 Operator(s)sign the"MS4 Acceptance" iii. all temporary,structural erosion and sediment control measures statement on the eNOT in accordance with the requirements in Part VII.J.A have been removed;and Traditional Land Use Control MS4 Operator official,by signing this statement, determined that it is acceptable for the owner or operator to submit the eNOT iv. all SMPs have been constructed in conformance with the SWPPP in accordance with the requirements of this Part.A Traditional Land Use Control MS4 Operator can make this determination by performing a final site and are operational;and inspection themselves or by accepting the qualified inspectors final site v. an as-built drawing has been prepared;or inspection certification(s)when required in Part V.A.2. 43 44 Part V.A.4. Part VI. 4. For construction activities that require SMPs and meet Part V.A.1.a.or b.,the Part VI.Record Retention and Reporting owner or operator must,prior to submitting the eNOT,ensure one of the following: A. Record Retention a. for SMP(s)that were constructed by a private entity,but will be owned, The owner or operator must retain a copy of the documents listed in Part I.E.3.and a operated,and maintained by a public entity,the SMP(s)and any right-of- copy of the LOT for a period of at least five years from the date that NYSDEC way(s)needed to operate and maintain such practice(s)have been accepts a complete NOT submitted in accordance with Part V. deeded to the municipality in which the practice(s)is located;or b. for SMP(s)that are privately owned,but will be operated and maintained B. Reporting by a public entity,an executed operation and maintenance agreement is in Except for the eNO1,the signature forms associated with the eNO1,and the eNOT, place with the municipality that will operate and maintain the SMP(s);or all other written correspondence requested by NYSDEC,including individual permit applications,must be sent to the address of the appropriate DOW(SPDES)Program c. for SMP(s)that are privately owned,the owner or operator has a contact at the Regional Office listed in Appendix E. mechanism in place that requires operation and maintenance of the practice(s)in accordance with the operation and maintenance plan,such as a deed covenant in the owner or operator's deed of record;or Part VII.Standard Permit Requirements d. for SMP(s)that are owned by a public or private institution(e.g.school, university,hospital),government agency or authority,or public utility,the For the purposes of this permit,examples of contractors and subcontractors include: owner or operator has policies and procedures in place that ensure third-party maintenance and construction contractors. operation and maintenance of the practices in accordance with the operation and maintenance plan. A. Duty to Comply 5. An owner or operatorthat has met the requirements of Part V.A.1.,2.,3.,and 4. The owner or operator,and all contractors or subcontractors,must comply with all must request termination of coverage under this permit by submitting a complete requirements of this permit.Any non-compliance with the requirements of this permit Notice of Termination form electronically using a NYSDEC approved form.5 constitutes a violation of the New York State Environmental Conservation Law (ECL),and its implementing regulations,and is grounds for enforcement action. a. The owners or operator's coverage is terminated as of the termination Filing of a request for termination of coverage under this permit,or a notification of date indicated in the Letter of Termination(LOT),which is sent by planned changes or anticipated non-compliance,does not limit,diminish or stay NYSDEC after a complete eNOT is submitted. compliance with any requirements of this permit. B. Need to Halt or Reduce Activity Not a Defense The necessity to halt or reduce the construction activity regulated by this permit,in order to maintain compliance with the requirements of this permit,must not be a defense in an enforcement action. C. Penalties s Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c)or(d).All waiver requests must There are substantial criminal,civil,and administrative penalties associated with be submitted to Stormwater info@dec.ny.gov or NYSDEC,Bureau of Water Permits,625 Broadway,4' violating the requirements of this permit.Fines of up to$37,500 per day for each Floor,Albany,New York 12233-3505. 45 46 Part VII.C. Part VII.G.1.a. violation and imprisonment for up to 15 years may be assessed depending upon the a. the owner or operator is not in compliance with the conditions of this nature and degree of the offense. permit or does not meet the requirements for coverage under this permit; and D. False Statements b. a change has occurred in the availability of demonstrated technology or Any person who knowingly makes any false material statement,representation,or practices for the control or abatement of pollutants applicable to the point certification in any application,record,report,or other document filed or required to source;and be maintained under this permit,including monitoring reports or reports of compliance or noncompliance must,upon conviction,be punished in accordance c. new effluent limitation guidelines or new source performance standards with ECL§71-1933 and or New York State Penal Law Articles 175 and 210. are promulgated that are applicable to point sources authorized to discharge in accordance with this permit;and E. Re-Opener Clause d. existing effluent limitation guidelines or new source performance Upon issuance of this permit,a determination has been made on the basis of a standards that are applicable to point sources authorized to discharge in submitted Notice of Intent,plans,or other available information,that compliance with accordance with this permit are modified;and the specified permit requirements will reasonably protect classified water use and assure compliance with applicable water quality standards.Satisfaction of the e. a water quality management plan containing requirements applicable to requirements of this permit notwithstanding,if operation pursuant to this permit such point sources is approved by NYSDEC;and causes or contributes to a condition in contravention of State water quality standards or guidance values,or if NYSDEC determines that a modification is necessary to f. circumstances have changed since the time of the request to be covered prevent impairment of the best use of the waters or to assure maintenance of water so that the owner or operator is no longer appropriately controlled under quality standards or compliance with other provisions of ECL Article 17 or the Clean this permit,or either a temporary or permanent reduction or elimination of Water Act(CWA),or any regulations adopted pursuant thereto,NYSDEC may the authorized discharge is necessary;and require such modification and the Commissioner may require abatement action to be taken by the owner or operator and may also prohibit such operation until the g. the discharge is in violation of section 17-0501 of the ECL;and modification has been implemented. h. the discharge(s)is a significant contributor of pollutants.In making this F. Duty to Mitigate determination,NYSDEC may consider the following factors: The owner or operator,and its contractors and subcontractors,must take all i. the location of the discharge(s)with respect to surface waters of the reasonable steps to minimize or prevent any discharge in violation of this permit State;and which has a reasonable likelihood of adversely affecting human health or the environment. ii. the size of the discharge(s);and G.Requiring Another General Permit or Individual SPDES Permit iii. the quantity and nature of the pollutants discharged to surface waters of the State;and NYSDEC may require any owner or operator authorized to discharge in accordance with this permit to apply for and obtain an individual SPDES permit or apply for iv. other relevant factors including compliance with other provisions of authorization to discharge in accordance with another general SPDES permit. ECL Article 17,or the CWA. 1. Cases where an individual SPDES permit or authorization to discharge in 2. When NYSDEC requires any owner or operator authorized by this permit to apply accordance with another general SPDES permit may be required include,but is for an individual SPDES permit as provided for in this subdivision,it must notify not limited to the following: the owner or operator in writing that a permit application is required.This notice must include a brief statement of the reasons for this decision,an application 47 48 Part VII.G.2. Part VII.J. form,a statement setting a time for the owner or operator to file the application J. Signatories and Certification for an individual SPDES permit,and a deadline,not sooner than 180 days from the owner's or operator's receipt of the notification letter,whereby the The Notice of Intent,Notice of Termination,and reports required by this permit must authorization to discharge under this permit must be terminated.NYSDEC may be signed as provided in 40 CFR§122.22. grant additional time upon demonstration,to the satisfaction of the RWE,6 that additional time to apply for an alternative authorization is necessary or where 1. All Notices of Intent and Notices of Termination must be signed as follows: NYSDEC has not provided a permit determination in accordance with 6 NYCRR Part 621. a. For a corporation.By a responsible corporate officer.For the purpose of 3. When an individual SPDES permit is issued to an owner or operator authorized this section,a responsible corporate officer means: to discharge under this permit for the same discharge(s),this permit authorization (i) a president,secretary,treasurer,or vice-president of the corporation for construction activities authorized under the individual SPDES permit is in charge of a principal business function,or any other person who automatically terminated on the effective date of the individual SPDES permit performs similar policy-or decision-making functions for the unless termination is earlier in accordance with 6 NYCRR Part 750. corporation;or H. Duty to Provide Information (ii) the manager of one or more manufacturing,production or operating The owner or operator must furnish to NYSDEC,within five business days, facilities,provided,the manager is authorized to make management unless otherwise set forth by NYSDEC,any information that NYSDEC may request decisions which govern the operation of the regulated facility to determine whether cause exists to determine compliance with this permit or to including having the explicit or implicit duty of making major capital determine whether cause exists for requiring an individual SPDES permit in investment recommendations,and initiating and directing other accordance with 6 NYCRR 750-1.21(a)(see Part VII.G.Requiring Another General comprehensive measures to assure long term environmental Permit or Individual Permit). compliance with environmental laws and regulations;the manager can ensure that the necessary systems are established or actions The owner or operator must make available to NYSDEC,for inspection and copying, taken to gather complete and accurate information for Notice of Intent or fumish to NYSDEC within 25 business days of receipt of a NYSDEC request for or Notice of Termination requirements;and where authority to sign such information,any information retained in accordance with this permit. documents has been assigned or delegated to the manager in Except for Part I.D.4.and 5.and Part I.G.,the following applies:where the owner or accordance with corporate procedures. operator becomes aware that it failed to submit any relevant facts on the Notice of Note:NYSDEC does not require specific assignments or delegations of Intent,or submitted incorrect information in a Notice of Intent or in any report to NYSDEC,the owner or operator must submit such facts or corrected information to authority to responsible corporate officers identified in 40 CFR NYSDEC within five business days. §122.22(a)(1)(1).NYSDEC will presume that these responsible corporate officers have the requisite authority to sign the Notice of Intent or Notice of I. Extension Termination unless the corporation has notified NYSDEC to the contrary. Corporate procedures governing authority to sign a Notice of Intent or In the event a new permit is not issued and effective prior to the expiration of this Notice of Termination may provide for assignment or delegation to permit,and this permit is extended pursuant to the State Administrative Procedure applicable corporate positions under 40 CFR§122.22(a)(1)(ii)rather than Act and 6 NYCRR Part 621,then the owner or operatorwith coverage under this to specific individuals. permit may continue to operate and discharge in accordance with the requirements of this permit until a new permit is issued and effective. It. For a partnership or sole proprietorship.By a general partner or the proprietor,respectively. e The Regional Water Manager where a DEC Region does not have a RWE. 49 50 Part VII.J.1.c. Part VII.J.4. c. For a municipality,State,Federal,or other public agency.By either a manage the system,or those persons directly responsible for gathering the principal executive officer or ranking elected official.For purposes of this information,the information submitted is,to the best of my knowledge and section,a principal executive officer of a Federal agency includes: belief,true,accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fine and 1. the chief executive officer of the agency;or imprisonment for knowing violations. 2. a senior executive officer having responsibility for the overall 5. Electronic reporting.If documents described in Part VII.J.1.or 2.are operations of a principal geographic unit of the agency(e.g., submitted electronically by or on behalf of the construction activity with Regional Administrators of EPA). coverage under this permit,any person providing the electronic signature for such documents must meet all relevant requirements of this section,and 2. All reports required by this permit,and other information requested by must ensure that all of the relevant requirements of 40 CFR Part 3(including, NYSDEC,must be signed by a person described in Part VII.J.1.,or by a duly in all cases,subpart D to Part 3)(Cross-Media Electronic Reporting)and 40 authorized representative of that person.A person is a duly authorized CFR Part 127(NPDES Electronic Reporting Requirements)are met for that representative only if: submission. a. The authorization is made in writing by a person described in Part VII.J.1. K. Inspection and Entry or using the Duly Authorized Form,found on the DEC website;and The owner or operator must allow NYSDEC,the USEPA Regional Administrator,the It. The authorization specifies either an individual or a position having applicable county health department,or any authorized representatives of those responsibility for the overall operation of the regulated facility or activity, entities,or,in the rase of a construction site which discharges through an MS4,an position of equivalent responsibility,or an individual or position having authorized representative of the MS4 receiving the discharge,upon the presentation overall responsibility for environmental matters for the company.(A duly of credentials and other documents as may be required by law,to: authorized representative may thus be either a named individual or any 1.enter upon the owner's or operator's premises where a regulated facility or individual occupying a named position);and activity is located or conducted or where records must be kept under the c. The written authorization is submitted to NYSDEC. requirements of this permit;and 2.have access to and copy at reasonable times,any records that must be kept 3. Changes to authorization.If an authorization under Part VII.J.2.is no longer under the requirements of this permit,including records required to be accurate because a different individual or position has responsibility for the maintained for purposes of operation and maintenance;and overall operation of the construction activity,a new authorization satisfying the requirements of Part VII.J.2.must be submitted to NYSDEC prior to or 3.inspect at reasonable times any facilities,equipment(including monitoring together with any reports,information,or applications to be signed by an and control equipment),practices or operations regulated or required under authorized representative. this permit;and 4. Certification.Any person signing a document under Part VII.J.1.or 2.must 4.sample or monitor at reasonable times,for the purposes of assuring general make the following certification: SPDES permit compliance or as otherwise authorized by the CWA or ECL, I certify under penalty of law that this document and all attachments were any substances or parameters at any location;and prepared under my direction or supervision in accordance with a system 5.enter upon the property of any contributor to the regulated facility or activity designed to assure that qualified personnel properly gather and evaluate the under authority of the owner or operator. information submitted.Based on my inquiry of the person or persons who 51 52 Part VILL. Part VII.Q. L. Confidentiality of Information Q.Oil and Hazardous Substance Liability The following must not be held confidential:this permit,the fad sheet for this permit, Coverage under this permit does not affect the imposition of responsibilities upon,or the name and address of any owner or operator,effluent data,the Notice of Intent, the institution of any legal action against,the owner or operator under section 311 of and information regarding the need to obtain an individual permit or an alternative the CWA,which must be in conformance with regulations promulgated pursuant to general SPDES permit.This includes information submitted on forms themselves section 311 governing the applicability of section 311 of the CWA to discharges from and any attachments used to supply information required by the forms(except facilities with NPDES permits,nor must such issuance preclude the institution of any information submitted on usage of substances).Upon the request of the owner or legal action or relieve the owner or operator from any responsibilities,liabilities,or operator,NYSDEC must make determinations of confidentiality in accordance with 6 penalties to which the owner or operator is or may be subject pursuant to the NYCRR Part 616,except as set forth in the previous sentence.Any information Comprehensive Environmental Response,Compensation and Liability Act of 1980, accorded confidential status must be disclosed to the Regional Administrator upon 42 U.S.C.section 9601 at seq.(CERCLA). his or her written request.Prior to disclosing such information to the Regional Administrator,NYSDEC will notify the Regional Administrator of the confidential R.Severability status of such information. The provisions of this permit are severable,and if any provision of this permit,or the M.Other Permits May Be Required application of any provision of this permit to any circumstance,is held invalid,the application of such provision to other circumstances,and the remainder of this Nothing in this permit relieves the owner oroperatorfrom a requirement to obtain permit,must not be affected thereby. any other permits required by law. S. NYSDEC Approved Forms N. NYSDEC Orders or Civil Decrees/Judgments The owner or operator must provide all relevant information that is requested by The issuance of this permit by the NYSDEC,and the coverage under this permit by NYSDEC,and required by this permit,on all NYSDEC approved fortes. the owner or operator,does not supersede,revoke,or rescind any existing order on consent or civil Decree/Judgment,or modification to any such documents or to any order issued by the Commissioner,or any of the terms,conditions,or requirements contained in such order or modification therefore,unless expressly noted. O.Property Rights Coverage under this permit does not convey any property rights in either real or personal property,or any exclusive privileges,nor does it authorize any injury to private property or any invasion of personal rights,nor any infringement of Federal, State,or local laws or regulations,nor does it obviate the necessity of obtaining the assent of any other jurisdiction as required by law for the discharge authorized. P. Compliance with Interstate Standards If the construction activity covered by this permit originates within the jurisdiction of an interstate water pollution control agency,then the construction activity must also comply with any applicable effluent standards or water quality standards promulgated by that interstate agency and as set forth in this permit for such construction activities. 53 54 Appendix A Appendix A Definitions APPENDIX A—Abbreviations and Definitions Abbreviations All definitions in this section are solely for the purposes of this permit.If a word is not APO—Agency Preservation Officer italicized in the permit,use its common definition. BB—New York State Standards and Specifications for Erosion and Sediment Control (Blue Book),dated November 2016 BMP—Best Management Practice Agricultural Building—a structure designed and constructed to house farm CPESC—Certified Professional in Erosion and Sediment Control implements,hay,grain,poultry,livestock or other horticultural products;excluding any CPv—Channel Protection Volume structure designed,constructed or used,in whole or in part,for human habitation,as a CWA—Clean Water Act(or the Federal Water Pollution Control Act,33 U.S.C.§1251 at place of employment where agricultural products are processed,treated or packaged, seq) or as a place used by the public. DM—New York State Stormwater Management Design Manual(Design Manual),dated July 31,2024 Agricultural Property—the land for construction of a barn,agricultural building,silo, DOW—Division of Water stockyard,pen or other structural practices identified in Table II in the"Agricultural Best EAF—Environmental Assessment Form Management Practice Systems Catalogue"(dated June 2023). ECL—chapter 43-B of the Consolidated Laws of the State of New York,entitled the Environmental Conservation Law Alter Hydrology from Pre-to Post-Development Conditions—the post-development EPA—U.S.Environmental Protection Agency peak flow rate(s)has increased by more than 5%of the pre-developed condition for the HSG—Hydrologic Soil Group design storm of interest(e.g.10 yr and 100 yr). MS4—Municipal Separate Storm Sewer System NOI—Notice of Intent Combined Sewer System—a sewer system which conveys sewage and stormwater NOT—Notice of Termination through a single pipe system to a publicly owned treatment works. NPDES—National Pollutant Discharge Elimination System NYC—The City of New York Commence(Commencement of)Construction Activities—the initial disturbance of NYCDEP—The City of New York Department of Environmental Protection soils associated with clearing,grading or excavation activities;or other construction NYSDEC—The New York State Department of Environmental Conservation related activities that disturb or expose soils such as demolition,stockpiling of fill OPRHP—Office of Parks,Recreation and Historic Places material,and the initial installation of erosion and sediment control practices required in Qf—Extreme Flood the SWPPP.See definition for"Construction Activify(ies)"also. Qp—Overbank Flood RR—Runoff Reduction Common Plan of Development or Sale—a contiguous area where multiple separate RRv—Runoff Reduction Volume and distinct construction activities are occurring,or may occur,under one plan.The RWE—Regional Water Engineer 'common plan"of development or sale is broadly defined as any announcement or SEQR—State Environmental Quality Review Act piece of documentation(including a sign,public notice or hearing,marketing plan, SHPA—State Historic Preservation Act advertisement,drawing,permit application,State Environmental Quality Review Act SMP—Post-Construction Stormwater Management Practice (SEAR)environmental assessment form or other documents,zoning request,computer SPDES—State Pollutant Discharge Elimination System design,etc.)or physical demarcation(including boundary signs,lot stakes,surveyor SWPPP—Stormwater Pollution Prevention Plan markings,etc.)indicating construction activities may occur on a specific plot.A common TMDL—Total Maximum Daily Load plan of development orsale is comprised of two or more phases. UPA—Uniform Procedures Act USDA—United States Department of Agriculture Common plan of development or sale does not include separate and distinct WQv—Water Quality Volume construction activities that are occurring,or may occur,under one plan that are at least 1/4 mile apart provided any interconnecting road,pipeline or utility project that is part of the same"common plan"is not concurrently being disturbed. 55 56 Appendix A Appendix A Construction Activity(les)—identified within 40 CFR 122.26(b)(14)(x), Dewatering—the act of draining rainwater and/or groundwater from building 122.26(b)(15)(i),and 122.26(b)(15)(ii),any clearing,grading,excavation,filling, foundations,vaults or excavations/trenches. demolition or stockpiling activities that result in soil disturbance.Clearing activities can include,but are not limited to,mechanized logging equipment operation,the cutting and Directly Discharge(s)(ing)(to a specific surface waterbody)—runoff flows from a skidding of trees,stump removal and/or brush root removal. construction site by overland flow and the first point of discharge is the specific surface waterbody,or runoff flows from a construction site to a separate storm sewer system Construction activity does not include routine maintenance that is performed to maintain and the first point of discharge from the separate storm sewer system is the specific the original line and grade,hydraulic capacity,or original purpose of a facility,which is surface waterbody. excluded from the calculation of the soil disturbance for a project.Routine maintenance includes,but is not limited to: Discharge(s)(d)—any addition of any pollutant to waters of the State through an outlet or point source. • Re-grading of gravel roads or parking lots;and • Cleaning and shaping of existing roadside ditches and culverts that maintains Embankment—an earthen or rock slope that supports a road/highway. the approximate original line and grade,and maintains or improves the hydraulic capacity of the ditch;and Equivalent(Equivalence)—the practice or measure meets all the performance, • Replacement of existing culverts that maintains the approximate original line longevity,maintenance,and safety objectives of the technical standard and will provide and grade,and maintains or improves the hydraulic capacity of a ditch;and an equal or greater degree of water quality protection. • Replacement of existing bridges that maintains the approximate original line and grade,and maintains or improves the hydraulic capacity beneath the Final Stabilization—all soil disturbance activities have ceased and a uniform,perennial bridges;and vegetative cover with a density of eighty(80)percent over the entire pervious surface • Cleaning and shaping of existing roadside ditches that does not maintain the has been established;or other equivalent stabilization measures,such as permanent approximate original grade,hydraulic capacity and purpose of the ditch if the landscape mulches,rock rip-rap or washed/crushed stone have been applied on all changes to the line and grade,hydraulic capacity or purpose of the ditch are disturbed areas that are not covered by permanent structures,concrete or pavement. installed to improve water quality and quantity controls(e.g.installing grass lined ditch);and Historic Property—any building,structure,site,object or district that is listed on the • Placement of aggregate shoulder backing that stabilizes the transition between State or National Registers of Historic Places or is determined to be eligible for listing on the road shoulder and the ditch or embankment;and the State or National Registers of Historic Places. • Full depth milling and filling of existing asphalt pavements,replacement of concrete pavement slabs,and similar work that does not expose soil or disturb Impervious Area(Cover)—all impermeable surfaces that cannot effectively infiltrate the bottom six(6)inches of subbase material;and rainfall.This includes paved,concrete and compacted gravel surfaces(i.e.parking lots, • Long-term use of equipment storage areas at or near highway maintenance driveways,roads,runways and sidewalks);building rooftops and miscellaneous facilities;and impermeable structures such as patios,pools,and sheds. • Removal of sediment from the edge of the highway to restore a previously existing sheet-flow drainage connection from the highway surface to the Infeasible—not technologically possible,or not economically practicable and highway ditch or embankment;and achievable considering best industry practices. • Existing use of Canal Corp owned upland disposal sites for the canal,and • Replacement of curbs,gutters,sidewalks and guide rail posts;and Minimize(ing)(ation)—reduce and/or eliminate to the extent achievable using control • Maintenance of ski trails including brush hog use and mowing;and measures(including best management practices)that are technologically available and • Above ground snowmaking pipe replacement;and economically practicable and achievable in light of best industry practices. • Replacement of existing utility poles;etc. Municipal Separate Storm Sewer System(MS4)-a conveyance or system of Construction Site—the land area where construction activity(ies)will occur.See also conveyances(including roads with drainage systems,municipal streets,catch basins, the definitions for"Commence(Commencement of)Construction Activities"and curbs,gutters,ditches,man-made channels,or storm drains): "Common Plan of Development or Sale." 57 58 Appendix A Appendix A 1. owned or operated by a State,city,town,village,borough,county,parish, Performance Criteria—the six performance criteria for each group of SMPs in district,association,or other public body(created by or pursuant to State Chapters 5 and 6 of the technical standard,New York State Stormwater Management law)having jurisdiction over disposal of sewage,industrial wastes, Design Manual(DM),dated July 31,2024.These include feasibility,conveyance, stormwater,or other wastes,including special districts under State law such pretreatment,treatment,landscaping,and maintenance.It does not include the Sizing as a sewer district,flood control district or drainage district,or similar entity, Criteria(i.e.WQv,RRv,CPv,Qp and Qf)in Part I.C.2.of the permit. or an Indian tribe or an authorized Indian tribal organization,or a designated and approved management agency under section 208 of the CWA,that Phase—a defined area in which construction activities are occurring or will occur discharges to surface waters of the State;and separate from other defined areas). 2. designed or used for collecting or conveying stormwater,and Point Source—any discernible,confined,and discrete conveyance,including but not limited to any pipe,ditch,channel,tunnel,conduit,well,discrete fissure,container, 3. which is not a combined sewer system;and rolling stock,concentrated animal feeding operation,vessel or other floating craft,or landfill leachate collection system from which pollutants are or may be discharged. 4. which is not part of a Publicly Owned Treatment Works(POTW)as defined at 40 CFR 122.2. Pollutant(s)—dredged spoil,filter backwash,solid waste,incinerator residue,sewage, garbage,sewage sludge,munitions,chemical wastes,biological materials,radioactive Natural Buffer(s)—an undisturbed area with natural cover running along a surface materials,heat,wrecked or discarded equipment,rock,sand and industrial,municipal, water(e.g.wetland,stream,river,lake,etc.). agricultural waste and ballast discharged into water;which may cause or might reasonably be expected to cause pollution of the waters of the state in contravention of New Development—any land disturbance that does not meet the definition of the standards or guidance values adopted as provided in 6 NYCRR Parts 700 at seq. Redevelopment Activity included in this appendix. Qualified Inspector—a person that is knowledgeable in the principles and practices of New York State Erosion and Sediment Control Certificate Program—a certificate erosion and sediment control,such as a licensed Professional Engineer,Certified program that establishes and maintains a process to identify and recognize individuals Professional in Erosion and Sediment Control(CPESC),Registered Landscape who are capable of developing,designing,inspecting and maintaining erosion and Architect,New York State Erosion and Sediment Control Certificate Program holder or sediment control plans on projects that disturb soils in New York State.The certificate other NYSDEC endorsed individual(s). program is administered by the New York State Conservation District Employees Association. It can also mean someone working under the direct supervision of,and at the same company as,the licensed Professional Engineer or Registered Landscape Architect, Nonpoint Source(s)—any source of water pollution or pollutants which is not a discrete provided that person has training in the principles and practices of erosion and sediment conveyance or point source permitted pursuant to Title 7 or 8 of Article 17 of the control.Training in the principles and practices of erosion and sediment control means Environmental Conservation Law(see ECL Section 17-1403). that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four(4)hours of NYSDEC Overbank—flow events that exceed the capacity of the stream channel and spill out endorsed training in proper erosion and sediment control principles from a Soil and into the adjacent floodplain. Water Conservation District,or other NYSDEC endorsed entity.After receiving the initial training,the individual working under the direct supervision of the licensed Professional Owner or Operator—the person,persons,or legal entity which owns or leases the Engineer or Registered Landscape Architect shall receive four(4)hours of training property on which the construction activity is occurring;an entity that has operational every three(3)years. control over the construction plans and specifications,including the ability to make modifications to the plans and specifications;and/or an entity that has day-to-day It can also mean a person that meets the Qualified Professional qualifications in operational control of those activities at a project that are necessary to ensure addition to the Qualified Inspector qualifications. compliance with the permit requirements. Note:Inspections of any SMPs that include structural components,such as a dam for an impoundment,shall be performed by a licensed Professional Engineer. 59 60 Appendix A Appendix A Qualified Professional—a person that is knowledgeable in the principles and practices Streambank—the terrain alongside the bed of a creek or stream.The bank consists of of stormwater management and treatment,such as a licensed Professional Engineer, the sides of the channel,between which the flow is confined. Registered Landscape Architect or other NYSDEC endorsed individual(s).Individuals preparing SWPPPs that require the SMP component must have an understanding of the Stormwater Pollution Prevention Plan(SWPPP)—a project specific report,including principles of hydrology,water quality management practice design,water quantity construction drawings,that among other things:describes the construction activity(ies), control design,and,in many cases,the principles of hydraulics.All components of the identifies the potential sources of pollution at the construction site;describes and shows SWPPP that involve the practice of engineering,as defined by the NYS Education Law the stormwater controls that will be used to control the pollutants(i.e.erosion and (see Article 145),shall be prepared by,or under the direct supervision of,a professional sediment controls;for many projects,includes SMPs);and identifies procedures the engineer licensed to practice in the State of New York. owner or operatorwill implement to comply with the requirements of the permit.See Part III of the permit for a complete description of the information that must be included Redevelopment Activity(ies)—the disturbance and reconstruction of existing in the SWPPP. impervious area,including impervious areas that were removed from a project site within five(5)years of preliminary project plan submission to the local government(i.e. Surface Waters of the State—shall be construed to include lakes,bays,sounds, site plan,subdivision,etc.). ponds,impounding reservoirs,springs,rivers,streams,creeks,estuaries,marshes, inlets,canals,the Atlantic ocean within the territorial seas of the state of New York and Renewable Energy—electricity or thermal energy generated by renewable energy all other bodies of surface water,natural or artificial,inland or coastal,fresh or salt, systems through use of the following technologies:solar thermal,photovoltaics,on land public or private(except those private waters that do not combine or effect a junction and offshore wind,hydroelectric,geothermal electric,geothermal ground source heat, with natural surface waters),which are wholly or partially within or bordering the state or tidal energy,wave energy,ocean thermal,and fuel cells which do not utilize a fossil fuel within its jurisdiction.Waters of the state are further defined in 6 NYCRR Parts 800 to resource in the process of generating electricity. 941. Site Limitations—site conditions that prevent the use of an infiltration technique and or Temporarily Ceased—an existing disturbed area will not be disturbed again within 14 infiltration of the total WQv.Typical site limitations include:seasonal high groundwater, calendar days of the previous soil disturbance. shallow depth to bedrock,and soils with an infiltration rate less than 0.5 inches/hour. The existence of site limitations shall be confirmed and documented using actual field Temporary Stabilization—exposed soil has been covered with material(s)as set forth testing(i.e.test pits,soil borings,and infiltration test)or using information from the most in the technical standard,New York Standards and Specifications for Erosion and current United States Department of Agriculture(USDA)Soil Survey for the County Sediment Control,to prevent the exposed soil from eroding.The materials can include, where the project is located. but are not limited to,mulch,seed and mulch,and erosion control mats(e.g.jute twisted yarn,excelsior wood fiber mats). Sizing Criteria—the criteria included in Part I.C.2 of the permit that are used to size SMPs.The criteria include;Water Quality Volume(WQv),Runoff Reduction Volume Total Maximum Daily Load(TMDL)—the sum of the allowable loads of a single (RRv),Channel Protection Volume(Cpv),Overbank Flood(Qp),and Extreme Flood pollutant from all contributing point and nonpoint sources.It is a calculation of the M. maximum amount of a pollutant that a waterbody can receive and still meet water quality standards,and an allocation of that amount to the pollutant's sources.A TMDL Steep Slope—land area designated on the current United States Department of stipulates Waste Load Allocations(WLA)for point source discharges,Load Allocations Agriculture(USDA)Soil Survey as Soil Slope Phase D,(provided the map unit name or (LA)for nonpoint sources,and a margin of safety(MOS). description is inclusive of slopes greater than 25%),or Soil Slope Phase E or F, (regardless of the map unit name),or a combination of the three designations. Traditional Land Use Control MS4 Operator—a city,town,or village with land use control authority that is authorized to discharge under New York State DEC's SPDES Stormwater—that portion of precipitation that,once having fallen to the ground,is in General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer excess of the evaporative or infiltrative capacity of soils,or the retentive capacity of Systems(MS4s)or the City of New York's Individual SPDES Permit for their Municipal surface features,which flows or will flow off the land by surface runoff to waters of the Separate Storm Sewer Systems(NY-0287890). State. Trained Contractor—an employee from the contracting(construction)company, identified in Part III.A.7.,that has received four(4)hours of NYSDEC endorsed training 61 62 Appendix A Appendix B in proper erosion and sediment control principles from a Soil and Water Conservation APPENDIX B—Required SWPPP Components by Project Type District,or other NYSDEC endorsed entity.After receiving the initial training,the trained Table 1 contractor shall receive four(4)hours of training every three(3)years. CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP It can also mean an employee from the contracting(construction)company,identified in THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS Part III.A.7.,that meets the qualified inspector qualifications(e.g.licensed Professional Engineer,Certified Professional in Erosion and Sediment Control(CPESC),Registered The following construction activities that involve soil disturbances of one(1)or more acres of Landscape Architect,New York State Erosion and Sediment Control Certificate land,but less than five(5)acres: Program holder,or someone working under the direct supervision of,and at the same Single-family home not located in one of the watersheds listed in Appendix C and not directly company as,the licensed Professional Engineer or Registered Landscape Architect, discharging to one of the 303(d)segments listed in Appendix D provided they have received four(4)hours of NYSDEC endorsed training in proper Single-family residential subdivisions with 25%or less impervious cover at total site build-out and erosion and sediment control principles from a Soil and Water Conservation District,or not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d)segments listed in Appendix D other NYSDEC endorsed entity). Construction of a barn or other agricultural building,silo,stock yard or pen. •Structural agricultural conservation practices as identified in Table II in the"Agricultural Best The trained contractor is responsible for the day-to-day implementation of the SWPPP. Management Practice Systems Catalogue"(dated dune 2023)that include construction or reconstruction of impervious area or alter hydrology from pre-to post-development conditions. Tree Clearing—construction activities limited to felling and removal of trees. The following construction activities that involve soil disturbances between five thousand(5000) Tree clearing does not include hand felling and leaving the trees in place with no square feet and one(1)acre of land: support from mechanized equipment,which is not considered construction activity requiring coverage under this permit. •All construction activities located in the New York City Watershed located east of the Hudson River, see Appendix C Figure 1,that involve soil disturbances between five thousand(5,000)square feet Water Quality Standard—such measures of purity or quality for any waters in relation and one(1)acre of land. to their reasonable and necessary use as promulgated in 6 NYCRR Part 700 at seq. Within the municipal boundaries of NYC: •Stand-alone road reconstruction,where the total soil disturbance from only that road construction,is less than one(1)acre of land. The following construction activities: •Installation of underground linear utilities; such as gas lines, fiber-optic cable, cable TV, electric,telephone,sewer mains,and water mains •Environmental enhancement projects,such as wetland mitigation,stormwater retrofits,stream restoration,and resiliency projects that reconstruct shoreline areas to address sea level rise •Pond construction •Linear bike paths running through areas with vegetative cover,including bike paths surfaced with an impervious cover •Cross-country ski trails,walking/hiking trails,and mountain biking trails,including a de minimis parking lot(maximum 10 spaces total,sized for passenger cars)with 35 feet minimum preservation of undisturbed area downgradient from the parking lot •Dam rehabilitation(the structure of the dam itself) •Sidewalks,bike paths,or walking paths,surfaced with an impervious cover,that are not part of residential,commercial,or institutional development; •Sidewalks,bike paths,or walking paths,surfaced with an impervious cover,that include incidental shoulder or curb work along an existing highway to support construction of the sidewalk,bike path, or walking path. 63 64 Appendix B Appendix B Table 1(Continued) Table 2 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES(SMPS) The following construction activities: The following construction activities: •Slope stabilization Single-family home located in one of the watersheds listed in Appendix C or directly discharging to •Slope flattening that changes the grade of the site,but does not significantly change the runoff one of the 303(d)segments listed in Appendix D characteristics Single-family home that disturbs five(5)or more acres of land •Spoil areas that will be covered with vegetation Single-family residential subdivisions located in one of the watersheds listed in Appendix C or •Vegetated open space(i.e.recreational parks,lawns,meadows,fields,downhill ski trails)that do directly discharging to one of the 303(d)segments listed in Appendix D not alter hydrology from pre-to post-development conditions Single-family residential subdivisions that involve soil disturbances of between one(1)and five(5) •Athletic fields(natural grass)that do not include the construction or reconstruction of impervious acres of land with greater than 25%impervious cover at total site build-out area and do not alter hydrology from pre-to post-development conditions Single-family residential subdivisions that involve soil disturbances of between 20,000 square feet •Demolition where vegetation will be established,and no redevelopment activity is planned' and one(1)acre of land within the municipal boundaries of NYC with greater than 25%impervious •Installation or replacement of either an overhead electric transmission line or a ski lift tower that cover at total site build-out does not include the construction of permanent access roads or parking areas surfaced with Single-family residential subdivisions that involve soil disturbances of five(5)or more acres of land, impervious cover. and single-family residential subdivisions that involve soil disturbances of less than five(5)acres •Solar array field areas that have tables elevated off the ground,spaced one table width apart,do that are part of a common plan of development or sale that will ultimately disturb five(5)or more not alter hydrology from pre-to post-development conditions,and address water quality volume and acres of land runoff reduction volume by maintaining sheet flow on slopes less than 8%. Multi-family residential developments;includes duplexes,townhomes,condominiums,senior •Structural agricultural conservation practices as identified in Table II in the"Agricultural Best housing complexes,apartment complexes,and mobile home parks Management Practice Systems Catalogue"(dated June 2023)that do not include construction or Creation of 5,000 square feet or more of impervious area in the municipal boundaries of NYC reconstruction of impervious area and do not alter hydrology from pre-to post-development Airports conditions. Amusement parks •Temporary access roads,median crossovers,detour roads,lanes,or other temporary impervious Breweries,cideries,and wineries,including establishments constructed on agricultural land areas that will be restored to pre-construction conditions once the construction activity is complete Campgrounds (in this context,"temporary'means the impervious area will be in place for two years or less) Cemeteries that include the construction or reconstruction of impervious area(>5%of disturbed •Other construction activities that do not include the construction or reconstruction of impervious area)or after the hydrology from pre-to post-development conditions area,and do not alter hydrology from pre-to post-development conditions,and are not listed in Commercial developments Table 2. Churches and other places of worship • Construction of a barn or other agricultural building(e.g.silo)that involves soil disturbance greater than five acres. • Structural agricultural conservation practices as identified in Table II in the"Agricultural Best Management Practice Systems Catalogue"(dated June 2023)that involves soil disturbance greater than five acres and include the construction or reconstruction of impervious area or alter hydrology from pre-to post-development conditions. • Facility buildings,including ski lodges,restroom buildings,pumphouses,ski lift terminals,and maintenance and groomer garages • Institutional development;includes hospitals,prisons,schools and colleges • Industrial facilities;includes industrial parks • Landfills;including creation of landfills or capping landfills. • Municipal facilities;includes highway garages,transfer stations,office buildings,POTWs,water treatment plants,and water storage tanks 1.If the site is redeveloped in the future,a new eNOI must be submitted. Golf courses • Office complexes 65 66 Appendix B Appendix C Table 2(Continued) CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES APPENDIX C—Watersheds Requiring Enhanced Phosphorus Removal POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES(SMPS) The following construction activities: Watersheds where owners or operators of construction activities identified in • Permanent laydown yards and equipment storage lots Table 2 of Appendix B must prepare a SWPPP that includes SMPS designed in • Playgrounds that include the construction or reconstruction of impervious area conformance with the Enhanced Phosphorus Removal Standards included in the • Sports complexes DM technical standard. • Racetracks;includes racetracks with earthen(dirt)surfaces • Road construction or reconstruction,outside the municipal boundaries of NYC Road construction within the municipal boundaries of NYC •Entire New York City Watershed located east of the Hudson River—Figure 1 • • Stand-alone road reconstruction,within the municipal boundaries of NYC where the total soil •Onondaga Lake Watershed—Figure 2 disturbance from that road reconstruction involves soil disturbance of one(1)acre or more of land Greenwood Lake Watershed—Figure 3 • Parking lot construction or reconstruction(as with all Table 2 bullets,this includes parking lots •Oscawana Lake Watershed—Figure 4 constructed as part of the construction activities listed in Table 1,unless a Table 1 bullet specifies Kinderhook Lake Watershed—Figure 5 otherwise) • Athletic fields(natural grass)that include the construction or reconstruction of impervious area (>5%of disturbed area)or alter the hydrology from pre-to post-development conditions • Athletic fields with artificial turf • Permanent access roads,parking areas,substations,compressor stations,and well drilling pads, surfaced with impervious cover,and constructed as part of an overhead electric transmission line, wind-power,cell tower,oil or gas well drilling,sewer or water main,ski lift,or other linear utility project • Sidewalks,bike paths,or walking paths,surfaced with an impervious cover,that are part of a residential,commercial or institutional development • Sidewalks,bike paths,or walking paths,surfaced with an impervious cover,that are part of highway construction or reconstruction • Solar array field areas on slopes greater than 8%that cannot maintain sheet flow using management practices identified in the BB or the DM • Solar array field areas on slopes less than 8%that will alter the hydrology from pre-to post- development conditions • Solar army field areas with tables that are not elevated high enough to achieve final stabilization beneath the tables • Traditional impervious areas associated with solar development(e.g.roads,buildings, transforners) • Utility pads surfaced with impervious cover,including electric vehicle charging stations • All other construction activities that include the construction or reconstruction of impervious area or alter the hydrology from pre-to post-development conditions,and are not listed in Table 1 67 68 Appendix C Appendix C Figure 1-New York City Watershed East of the Hudson Figure 2-Onondaga Lake Watershed EEKMAN CLAY CICERO EAST FISHKILL PAW LING VAN BUREN NO H US LI OL SALINA M N US 1 ATTERSON KENT V EAST BE AM12US G D ELBRIDG SYRACU SOUTHEAST DEWITT PUT AM VALL CARMEL Bi�'WSTER AiRELLUS SKAN H SALEM ATEL S ONONDAGA N RT SO MERS CDR WISBOR RKTOW LAFAYE E EDFORD OUN K CO O RIDG OTISCO LE PAFF D C RTH CAS TULLY M U LEASAN 0 Ph sphorus Wate e REBLE a HA SON 0 EOH Watershed 69 70 Appendix C Appendix C Figure 3-Greenwood Lake Watershed Figure 4-Oscawana Lake Watershed PHILIPSTOWN WARWICK KENT PUTNAM VALLEY GREENWOOD LAKE OSCAWANALAKE 0 Phosphorus Watershed (CARRMEL Phosphorus Watershed 71 72 Appendix C Figure 5-Kinderhook Lake Watershed APPENDIX D—Impaired Waterbodies(by Construction Related Pollutants) List of waterbodies impaired by pollutants related to construction activity,including turbidity, silt/sediment,and nutrients(e.g.nitrogen,phosphorus).This list is a subset of"The Final New York State 2018 Section 303(d)List of Impaired Waters Requiring a Ti dated June 2020. I SAND LAKE County Pollutant EAST OREENBUSH Albany Ann Lee(Shakers)Pond,Stump Pond(1201 0096) Phosphorus 1 Albany Lawsons Lake(1301-0235) Phosphorus ! ~~ Allegany Amity Lake,Saunders Pond(0403-0054) Phosphorus ...LLL��� Allegany Andover Pond(D403-0056) Phosphorus Bronx Reservoir No.1/1-ake Isle(1702-0075) Phosphorus Bronx Van Cortlandt Lake(1702-0008) Phosphorus Broome Blueberry,Laurel Lakes(1404-0033) Phosphorus Broome Fly Pond,Deer Lake(1404-0038) Phosphorus Broome Minor Tribs to Lower Susquehanna(0603-0044) Phosphorus NASSAU Broome Whitney Point Lake/Reservoir(0602-0004) Phosphorus SCHODACK Cattaraugus Allegheny River/Reservoir(0201-0023) Phosphorus 1 / Cattaraugus Beaver Lake/Alma Pond(0201-W73) Phosphorus Cattaraugus Case Lake(0201-0020) Phosphorus JCattaraugus Linlyco/Club Pond(0201-0035) Phosphorus Cayuga Duck Lake(0704-0025) Phosphorus f Cayuga Owasco Inlet,Upper,and tribs(0706-0014) Nutrients Chautauqua Chadakoin River and tribs(0202-0018) Phosphorus Chautauqua Hulburt/Clymer Pond(0202-0079) Phosphorus Chautauqua Middle Cassadaga Lake(0202-0002) Phosphorus LEBANON Clinton Great Chazy River,Lower,Main Stem(1002-0001) Silt/Sediment { Columbia Robinson Pond(1308-0003) Phosphorus Cortland Dean Pond(0602-0077) Phosphorus Dutchess Fallkill Creek(1301-0087) Phosphorus KINDER14OCK CHATHRM �. Dutchess Hillside Lake(1304-0001) Phosphorus Dutchess Wappingers Lake(1305-0001) Phosphorus CAN,AAN Dutchess Wappingers Lake(1305-0001) Silt/Sediment Erie Beeman Creek and tribs(0102-0030) Phosphorus .VALATIE] Erie Delaware Park Pond(0101-0026) Phosphorus �Town.sni .or City Bwwmy for New voe state Erie Ellicott Creek,Lower,and tribs(0102-0018) Phosphorus is,r ok Lake waieranad Erie Ellicott Creek,Lower,and tribs(0102-0018) Silt/Sediment Erie Green Lake(0101-0038) Phosphorus Erie Little Sister Creek,Lower,and tribs(0104-0045) Phosphorus Erie Murder Creek,Lower,and tribs(0102-D031) Phosphorus 73 Erie Rush Creek and trib5(0104-0018) Phosphorus Nassau Bannister Creek/Bay(1701-0380) Nitrogen Erie Scajaquada Creek,Lower,and tribs(0101-0023) Phosphorus Nassau Beaver Lake(1702-0152) Phosphorus Erie Scajaquada Creek,Middle,and tribs(0101-0033) Phosphorus Nassau Browswere Bay(1701-0383) Nitrogen Erie Scajaquada Creek,Upper,and tribs(0101-0034) Phosphorus Nassau Camaans Pond(1701-0052) Phosphorus Erie South Branch Smoke Cr,Lower,and tribs Phosphorus Nassau East Meadow Brook,Upper,and tribs(1701-0211) Silt/Sediment (0101-0036) Nassau East Rockaway Channel(1701-0383) Nitrogen Erie South Branch Smoke Cr,Lower,and tribs Silt/Sediment Nassau Glen Cove Creek,Lower,and tribs(1702-0146) Silt/Sediment (0101-0036) Nassau Grant Park Pond(1701-0054) Phosphorus Genesee Bigelow Creek and tribs(0402-0016) Phosphorus Nassau Hempstead Bay,Broad Channel(1701-0032) Nitrogen Genesee Black Creek,Middle,and minor tribs(0402 0028) Phosphorus Nassau Hempstead Lake (1701-0382)15) Phosphorus Genesee Black Creek,Upper,and minor tribs(0402-0048) Phosphorus Nassau Hewlett Bay(1701-0382) Nitrogen Genesee Bowen Brook and tribs(0102-0036) Phosphorus Nassau Hog Island Channel(1701-0220) Nitrogen Genesee LeRoy Reservoir(0402-0003) Phosphorus Nassau Massapequa Creek,Upper,and tribs(1701-0174) Phosphorus Genesee Mill Pond(0402-0050) Phosphorus Milburn/Parsonage Creeks,Lpp,and tribs(1701- Genesee Oak Orchard Cr,Upper,and tribs(0301-0014) Phosphorus Nassau 0212) Phosphorus Genesee Oatka Creek,Middle,and minor tribs(0402-0031) Phosphorus Nassau Reynolds Channel,East(1701-0215)[12] Nitrogen Genessee Tonawanda Cr,Middle,Main Stem(0102-0002) Phosphorus Nassau Reynolds Channel,West(1701-0216)12 Nitrogen Greene Schcharie Reservoir(1202-0012) Silt/Sediment Nassau Tidal Tribs to Hempstead Bay(1701-0218) Nitrogen Greene Sleepy Hollow Lake(1301-0059) Silt/Sediment Nassau Tribs(fresh)to East Bay(1701-0204) Silt/Sediment Herkimer Steele Creek tribs(1201-0197) Phosphorus Nassau Tribs(fresh)to East Bay(1701-0204) Phosphorus Herkimer Steele Creek tribs(1201-0197) Silt/Sediment Nassau Tribs to Smith Pond/Halls Pond(1701-0221) Phosphorus Kings Hendrix Creek(1701-0006)18 Nitrogen Nassau Woodmere Channel(1701-0219) Nitrogen Kings Prospect Park Lake(1701-0196) Phosphorus New York Harlem Meer(1702-0103) Phosphorus Lewis Mill Creek/South Branch,and tribs(0801-0200) Nutrients Newyork The Lake in Central Park(1702-0105) Phosphorus Livingston Christie Creek and tribs(0402-0060) Phosphorus Niagara Bergholi Creek and tribs(0101-0004) Phosphorus Livingston Conesus Lake(0402-0004) Phosphorus Niagara Hyde Park Lake(0101-0030) Phosphorus Livingston Mill Creek and minor tribs(0404-0011) Silt/Sediment Niagara Lake Ontario Shoreline,Western(0301-0053)9 Phosphorus Monroe Black Creek,Lower,and minor tribs(0402-0033) Phosphorus Niagara Lake Ontario Shoreline,Western(0301-0072)9 Phosphorus Monroe I Buck Pond(0301-0017) Phosphorus Oneida Ballou,Nail Creeks(1201-0203) Phosphorus Monroe Cranberry Pond(0301-0016) Phosphorus Nutrients Monroe Durand,Eastman Lakes(0302-0037) Phosphorus Onondaga Ley Creek and tribs(0702-0001)10 (phosphorus) Monroe Lake Ontario Shoreline,Western(0301-0069)9 Phosphorus Nutrients Onondaga Minor Tribs to Onondaga Lake(0702-0022)10 Monroe Long Pond(0301-0015) Phosphorus (phosphorus) Monroe Mill Creek and tribs(0302-0025) Phosphorus 2 Onondaga Minor Tribs to Onondaga Lake(0702-0022)30 Nitrogen(NH3,NO2) Monroe Mill Creek/Blue Pond Outlet and tribs(0402-0049) Phosphorus Onondaga Onondaga Creek,Lower(0702-0023)10 Nutrients Monroe Minor Tribs to lrondequoit Bay(0302-0038) Phosphorus (phosphorus) Monroe Rochester Embayment-East(0302-0002)[91 Phosphorus Onondaga Onondaga Creek,Lower,and tribs(0702-0023) Turbidity Monroe Rochester Embayment-West(0301-0068)9 Phosphorus Onondaga Onondaga Creek,Middle,and[ribs(0702-0004) Turbidity Monroe Shipbuilders Creek and tribs(0302-0026) Phosphorus 2 Onondaga Onondaga Creek,Upper,and tribs(0702-0024) Turbidity Monroe Thomas Creek/White Brook and tribs(0302-0023) Phosphorus Ontario Great Brookand minor tribs(0704-0034) Phosphorus2 Ontario Great Brook and minor tribs(0704-0034) Silt/Sediment 75 76 Ontario Hemlock Lake Outlet and minor tribs(0402-0013) Phosphorus Seneca Reeder Creek and tribs(0705-0074) Phosphorus Ontario Honeoye Lake(0402-0032) Phosphorus St.Lawrence Black Lake Outlet,Black Lake(0906-0001) Phosphorus Orange Brown Pond Reservoir(1303-0013) Phosphorus St.Lawrence Fish Creek and minortribs(0906-0026) Phosphorus Orange Lake Washington(1303-0012) Phosphorus Steuben Smith Pond(0502-0012) Phosphorus Orange Minor Tribs to Middle Wallkill(1306-0061) Phosphorus Suffolk Agawam Lake(1701-0117) Phosphorus Orange Monhagen Brook and tribs(1306-0074) Phosphorus Suffolk Big/Little Fresh Ponds(1701-0125) Phosphorus Orange Orange Lake(1301-0008)[16] Phosphorus Suffolk Canaan Lake(1701-0018) Phosphorus Orange Quaker Creek and tribs(1306-0025) Phosphorus Suffolk Canaan Lake(1701-0018) Silt/Sediment Orange Wallkill River,Middle,Main Stem(1306-0038) Phosphorus Suffolk Fresh Pond(1701-0241) Phosphorus Orange Wallkill River,Upper,and Minor tribs(1306-0017) Phosphorus Suffolk Great South Bay,East(1701-0039) Nitrogen Orleans Glenvwood Lake(0301-0041) Phosphorus Suffolk Great South Bay,Middle(1701-0040) Nitrogen Orleans Lake Ontario Shoreline,Western(0301-0070)9 Phosphorus Suffolk Great South Bay,West(1701-0173) Nitrogen Orleans Lake Ontario Shoreline,Western(0301-0071)9 Phosphorus Suffolk Lake Ronkonkoma(1701-0020) Phosphorus Oswego Lake Neatahwanta(0701-0018) Nutrients Suffolk Mattituck/Marratooka Pond(1701-0129) Phosphorus (phosphorus) Suffolk Mill and Seven Ponds(1701-0113) Phosphorus Oswego Pleasant Lake(0703-0047) Phosphorus Suffolk Millers Pond(1702-0013) Phosphorus Putnam Lost Lake,Putnam Lake(1302-0053) Phosphorus Suffolk Moriches Bay,East(1701-0305) Nitrogen Putnam Minor Tribs to Croton Falls Reservoir(1302-0001) Phosphorus Suffolk Moriches Bay,West(1701-0038) Nitrogen Queens Bergen Basin(1701-00D9)18 Nitrogen Suffolk Quantuck Bay(1701-0042) Nitrogen Jamaica Bay,Eastern,and tribs,Queens(1701- Suffolk Shinnecock Bay and Inlet 1701-0033 Nitrogen Queens Nitrogen Y ( ) g 0005)18 Suffolk Tidal Tribs to West Moriches Bay(1701-0312) Nitrogen Queens Kissena Lake(1702-0258) Phosphorus Sullivan Bodine,Mongomery Lakes(1401-0091) Phosphorus Queens Meadow Lake(1702-0030) Phosphorus Queens Shellbank Basin(1701-0001)18 Nitrogen Sullivan Davies LakLake (1 02-004) Phosphorus Queens Willow Lake(1702-0031) Phosphorus Sullivan Evens re Lake (140200 Phosphorus Rensselaer Nassau Lake(1310-0001) Phosphorus Sullivan Pleasure e(14 1-0063) ) Phosphorus Rensselaer Snyders Lake(1301-0043) Phosphorus Sullivan Swan Lake e,Southern Phosphorus Richmond Grassmere Lake/Bradys Pond(1701-0357) Phosphorus Tompkins Cayuga Lake,Southern End(0705-0040) Phosphorus Tompkins Cayuga Lake,Southern End(0705-0040) Silt/Sediment Rockland Congers Lake,Swartout Lake(1501-0019) Phosphorus Ulster Ashokan Reservoir(1307-0004) Silt/Sediment Rockland Rockland Lake(1501-0021) Phosphorus Ulster Esopus Creek,Lower,Main Stem(1307-0010)[17] Turbidity Saratoga Ballston Lake(1101-0036) Phosphorus Ulster Esopus Creek,Middle,Main Stem(1307-0003)17 Turbidity Saratoga Dwaas Kill and tribs(1101-0007) Phosphorus Esopus Creek,Upper,and minor tribs Saratoga Dwaas Kill and tribs(1101-0007) Silt/Sediment Ulster (1307-0007)[31 Silt/Sediment Saratoga Lake Lonely(1101-0034) Phosphorus Ulster Wallkill River,Lower,Main Stem(1306-0027) Phosphorus Saratoga Round Lake(1101-0060) Phosphorus Warren Hague Brook and tribs(1006-0006) Silt/Sediment Saratoga Tribs to Lake Lonely(1101-0001) Phosphorus Warren Huddle/Finkle Brooks and tribs(1006-0003) Silt/Sediment Schenectady Collins Lake(1201-0077) Phosphorus Warren Indian Brook and tribs(1006-0002) Silt/Sediment Schenectady Duane Lake(1311-0006) Phosphorus Warren Lake George(1006-0016)and tribs Silt/Sediment Schenectady Lake Manaville Lake(1201-0113) Phosphorus Warren Tribs to Lake George,East Shore(1006-0020) Silt/Sediment Schuyler Cayuta Lake(0603-0005) Phosphorus Warren Tribs to Lake George,Lk.George Village(1006-0008) Silt/Sediment 77 78 Washington Wood Cr/Champlain Canal and tribs(1005-0036) Phosphorus APPENDIX E—List of NYSDEC Regional Offices Westchester Lake Katonah(1302-0136) Phosphorus Westchester Lake Lincolndale(1302-0089) Phosphorus Westchester Lake Meahagh(1301-0053) Phosphorus DIVISION OF DIVISIONOFWATER Westchester Lake Mohegan(1301-0149) Phosphorus Region COVERING THE ENVIRONMENTAL (DOW) Westchester Lake Shenorock(1302-0083) Phosphorus FOLLOWING COUNTIES: PERMITS(DIEP) WATER SPDES)PROGRAM Westchester Mamaroneck River,Lower(1702-0071) Silt/Sediment PERMIT ADMINISTRATORS Westchester Mamaroneck River,Upp,&minor tribs(1702-0123) Silt/Sediment 50 CIRCLE ROAD 50 CIRCLE ROAD Westchester Saw Mill River(1301-0007) Phosphorus NASSAU AND SUFFOLN STONY BROOK,NY 11790 STox BROOK,NY 1179a34o9 Westchester Saw Mill River,Middle,and tribs(1301-0100) Phosphorus TEL.(631)444-0365 TEL.(631)4444405 Westchester Sheldrake River(1702-0069) Phosphorus 1HUNTERS POINT P—, 1 HUNTERS POINT PLA2A, Westchester Sheldrake River(1702-0069) Silt/Sedimnt z BRoxx,wxOS,N—YORx, 4740218T ST. 47.4021sTST. Westchester Silver Lake Phosphorus 1702-0040) Phos OUEENS AND RICxMoxO LONG UI—C—Nv 11101-5407 LONGISLANDCRY,NY 11101-5407 ( P TEL.(71.)482-7 TEL.(718)482d933 Westchester Teatown Lake(1302-0150) Phosphorus Westchester Truesdale Lake(1302-0054) Phosphorus DUTCNESS,ORANGE,PUTNAM, 21 SOUTH PUTT CORNERS ROAD 220 WHITE PLAINS ROAD,SUITE 110 Westchester Wallace Pond(1301-0140) Phosphorus 3 nRx00 wESTexEsrexµ,uLsrER TEw(8J.5)i56 0s9 NY 1 1696 TEL(91a)42s-2sos ALBANY,CO1111A, D[IwwnRc GRE[NE, 1130 NORTH WEST—ROAD 1130 NORTH WE6TCOTT ROAD 4 MONTGOMERY,OTSEGO, ScxeNECTMY,NY 1230E-2014 SDHENECTAGY,NY 12306-2014 FUNSSELAER,SCHENECT-1 TEL.(518)3571069 TEL_(518)3571.5 AND SCHoxARIE CLINTON,ESSEX,FRANKLIN, 1115 STATE ROUTE 86,PO BOX 296 232 GOLF COURSE ROAD FULTON'HAMILTON, 5 SARATOGA,WARREN AND RAY BROOK,W 1297741296 WARRENSBURG,NY 12885-1172 WASHINGTON TEL.(518)897-1234 TEL(518)623-1200 HERKIMER,JEFFERSON, STATE OFFICE BUILDING STATE OFFICE BUILDING 6 LEWIS,ONEIDA AND 317 WASHINGTON STREET 207 GENESEE STREET ST.LAWRENCE WATERTOWN,NY 13601-3787 UTICA,NY 13501-2885 TEL.(315)785.2245 TEL.(315)793-2554 BROOME,CAYUGA, CHENANGO,CORTLAND, 5786 WIDEWATERS PARKWAY 5786 WIDEWATERS PARKWAY 7 MADISON,ONONDAGA, SYRACUSE.NY 13214-1867 SYRACUSE,NY 132141867 OSWEGO,TIOGA AND TEL.(315)426.7438 TEL.(315)426-7500 TOMPKINS CHEMUNG,GENESEE, LIVINGSTON,MONROE, 6274 EAST AVON-LIMA 6274 EAST AVON-LIMA RD. 8 ONTARIO,ORLEANS, RDADAVON,NY 14414.9519 AVON,NY 1"14-9519 SCHUYLER,SENECA, TEL.(585)226.2466 TEL.(585)226-2466 STEUBEN,WAYNE AND PATES ALLEGANY. 700DELAWAREAVENUE 700 DELAWARE AVENUE 9 CUGUS, BUFFALO,NY 14209-2999 BUFFALO,NY 142094999 CHAUTAUAUTAUOUA,ERIE,NIAGARA AND WYOMING TEL.(716)851.7165 TEL.(716)$51-7070 79 80 YORK Department Of STATE Environmental Conservation APPENDIX F—SWPPP Preparer Certification Form SWPPP Preparer Certification Form The SWPPP Preparer Certification Form required by this permit begins on the following page. SPDES General Permit for Stormwater Discharges from Construction Activity,GP-0.25.001(CGP) (In accordance with CGP Part I.D.2.b.,the completed form must be attached to the eNOI and submitted to NYSDEC electronically.) Project/Site Name: eNOI Submission ID: Owner/Operator Name: Certification Statement—SWPPP Preparer I hereby certify that the Stormwater Pollution Prevention Plan(SWPPP)has been prepared in accordance with the requirements of GP-0-25-001.I certify under penalty of law that the SWPPP and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. SWPPP Preparer First Name MI SWPPP Preparer Last Name Signature Date 81 ReAsed:January 2025 APPENDIX G—MS4 SWPPP Acceptance Form NEw Department of PORK STATE Environmental The MS4 SWPPP Acceptance Form required by this permit begins on the following Conservation page. MS4 SWPPP Acceptance Form for construction activities seeking authorization under the SPDES General Permit for Stormwater Discharges from Construction Activity,GP-0-25-001(CGP) (In accordance with CGP Part I.D.2.1b.,the completed form must be attached to the eNOI and submitted to NYSDEC electronically.) I. Project Owner/Operator Information 1.Owner/Operator Name: 2.Contact Person: 3.Street Address: 4.City/State/Zip: It. Project Site Information 5.Project/Site Name: 6.Street Address: 7.City/State/Zip: III. Stormwater Pollution Prevention Plan(SWPPP)Review and Acceptance Information 8.SWPPP Reviewed by: 9.Title/Position: 10.Date Final SWPPP Reviewed and Accepted: IV.Regulated MS4 Information 11.Name of MS4 Operator: 12.MS4 SPDES Permit Identification Number:NYR20A 13.Street Address: 14.City/State/Zip: 15.Telephone Number: 83 Page 1 of 2 APPENDIX H—NYCDEP SWPPP Acceptance/Approval Form MS4 SWPPP Acceptance Form-continued V.Certification Statement-MS4 Official(principal executive officer or ranking elected official)or The City of New York Department of Environmental Protection(NYCDEP)SWPPP Duly Authorized Representative Acceptance/Approval form required by this permit begins on the following page. I hereby certify that the final Stormwater Pollution Prevention Plan(SWPPP)for the construction project identified in section II.of this form has been reviewed and meets the substantive requirements in the SPDES General Permit for Stormwater Discharges from Construction Activity,GP-0-25-001(CGP). Note:The MS4 Operator,through the acceptance of the SWPPP,assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP.In addition,review and acceptance of the SWPPP by the MS4 Operator does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name': Title/Position: Signature: Date: VI.Additional Information Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2. (NYSDEC-MS4 SWPPP Acceptance Form-January 2025) 86 Page 2 of 2 THE CITY OF NEW YORK THE CITY OF NEW YORK NW DEPARTMENT OF ENVIRONMENTAL PROTECTION MW DEPARTMENT OF ENVIRONMENTAL PROTECTION EnNronmental Bureau of Environmental Planning and Analysis envo-onmentat Bureau of Environmental Planning and Analysis Protection 59-17 Junction Blvd.,9th Floor;Flushing,NY 11373 Protection 59-17 Junction Blvd.,9th Floor;Flushing,NY 11373 SWPPP Acceptance/Approval V.Certification Statement-MS4 Official(principal executive officer or ranking elected official)or Duly Authorized Representative Application Number: I hereby certify that the final Stormwater Pollution Prevention Plan(SWPPP)for the construction project identified I.Project Owner/Operator Information in question 5 has been reviewed and meets the substantive requirements in the SPDES General Permit For Stormwater Discharges from Municipal Separate Storm Sewer Systems(MS4s). 1.Owner/Operator Name: 2.Contact Person: I Note:The MS4,through the acceptance of the SWPPP,assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP.In addition,review and acceptance of the SWPPP by the MS4 does not 3.Street Address: relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. 4.City/State/Zip: Printed Name: If.Project Site Information Title/Position: I 5.Project/Site Name: Signature: I6.Street Address: I 7.City/State/Zip: III.Stormwater Pollution Prevention Plan(SWPPP)Review and Acceptance/Approval I Date'. 8.SWPPP Reviewed by: I VI.Conditions of Acceptance/Approval and Additional Information 9.Title/Position:/ 10.Date Final SWPPP Reviewed and Accepted: I 11.Acceptance/Approval Expiration Date: IV.Regulated MS4 Information for projects that require coverage under the NY State Pollution Discharge Elimination System General Permit for Stormwater Discharges from Construction Activity 12.Name of MS4:CITY OF NEW YORK 13.MS4 SPDES Permit Identification Number:NY-0287890 14.Contact Person: 15.Street Address:59-17Junction Blvd.9th Floor 16.City/State/Zip:Flushing,NY 71373 17.Telephone Number: Projects in the MS4 area must submit a copy of this SWPPP Acceptance with a Notice of Projects in the MS4 area must submit a copy of this SWPPP Acceptance with a Notice of Intent for coverage under the NY SPDES General Permit for Stormwater Discharges from Intent for coverage under the NY SPDES General Permit for Stormwater Discharges from oepanmem or Construction Activity to:NYS Department of Environmental Conservation,Division of Water; oepanmem or Construction Activity to:NYS Department of Environmental Conservation,Division of Water; emrironmenrat 625 Broadway,4th Floor;Albany,New York 12233-3505. emrironm 11 625 Broadway,4th Floor;Albany,New York 12233-3505. conservanon Coroervaaon Page 1 Of 2 Page 2 Of 2 Department of n Environmental Conservation APPENDIX I-MS4 No Jurisdiction Form MS4 No Jurisdiction Form for construction activities seeking authorization under the The MS4 No Jurisdiction Form required by this permit begins on the following page. SPDES General Permit for Stormwater Discharges from Construction Activity,GP-0-25-001(CGP) (In accordance with CGP Part I.D.2.1b.,the completed form must be attached to the eNCI and submitted to NYSDEC electronically.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. eNOI Submission ID: III. Traditional Land Use Control MS4 Operator Information a. Name of MS4 Operator: b. MS4 SPDES Permit ID Number:NYR20A c. Street Address: d. City/State/Zip: e. Telephone Number: IV. Certification Statement In accordance with CGP Part LD.2.1,.ii.3.,I hereby certify that the Traditional Land Use Control MS4 Operator identified in section III.of this form does not have review authority over the construction project identified in section II.of this form,which is owned/operated by the entity identified in section I. of this form.I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. a. Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VIIJ.2.: b. Title/Position: c. Signature: d. Date: 89 NEw Department of YORN STATE Environmental Conservation APPENDIX J—Owner/Operator Certification Form Owner/Operator Certification Form The Owner/Operator Certification Form required by this permit begins on the following page. SPDES General Permit for Stormwater Discharges from Construction Activity,GP-0-25-001(CGPJ (In accordance with CGP Part I.D.2.1b.or Part I.F.2.and 3.,the completed form must be attached to the eNOI or the Request to Continue Coverage,and submitted to NYSDEC electronically. ProjectlSite Name: eNOl Submission ID: eNOl Submitted by: ❑Owner/Operator ❑SWPPP Preparer ❑Other Certification Statement-Owner/Operator I hereby certify that I read,and will comply with,the GP-0-25-001 permit requirements.I understand that authorization to discharge under the permit for the project/site named above is dependent on receipt of a Letter of Authorization(LOA)or a Letter of Continued Coverage(LOCC)from the New York State Department of Environmental Conservation(NYSDEC)in accordance with CGP Part I.D.3.b.or Part I.F.4. I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. Owner/Operator First Name MI Owner/Operator Last Name Signature 91 Date Revised:January 2025 Appendix E NYS OPRHP Documentation Stormwater Pollution Prevention Plan(SWPPP) E 20 Skyward Drive February 2025 NewYork State 100 Parks, Recreation and YEARS Historic Preservation KATHY HOCHUL RANDY SIMONS Governor Commissioner Pro Tempore December 17, 2024 Brian Sipperly Principal Project Manager Verity Engineering, D.P.C. P.O. Box 474 Troy, NY 12181 Re: DEC Commercial Development 20 Skyward Dr, Saratoga Springs, Saratoga County, NY 12866 24PR10398 Dear Brian Sipperly: Thank you for requesting the comments of the Office of Parks, Recreation and Historic Preservation (OPRHP). We have reviewed the project in accordance with the New York State Historic Preservation Act of 1980 (Section 14.09 of the New York Parks, Recreation and Historic Preservation Law). These comments are those of the OPRHP and relate only to Historic/Cultural resources. They do not include potential environmental impacts to New York State Parkland that may be involved in or near your project. Based upon this review, it is the opinion of OPRHP that no properties, including archaeological and/or historic resources, listed in or eligible for the New York State and National Registers of Historic Places will be impacted by this project. If further correspondence is required regarding this project, please be sure to refer to the OPRHP Project Review (PR) number noted above. If you have any questions, please contact Leslie Krupa at the following email address: Leslie.Krupa@parks.ny.gov Sincerely, R. Daniel Mackay Deputy Commissioner for Historic Preservation Division for Historic Preservation New York State Office of Parks, Recreation and Historic Preservation Division for Historic Preservation, Peebles Island,PO Box 189,Waterford, New York 12188-0189 (518)237-8643•https://parks.ny.gov/shpo Appendix F Geotechnical and Environmental Documentation Stormwater Pollution Prevention Plan(SWPPP) F 20 Skyward Drive February 2025 Yo K Department of KATHY HOCHUL STATE Environmental Governor Conservation SEAN MAHAR Interim Commissioner Sent via Email Only February 5, 2025 John Munter Munter Enterprises 881 Murray Road Middle Grove, NY 12850 john(amunterenterprises.com Re: RTE Non-Jurisdictional Determination Proposed Development Skyward Drive, WJ Industrial Park Tax Parcel ID #: 178.-1-61 Saratoga Springs (C), Saratoga County Dear Mr. Munter: The Department of Environmental Conservation (DEC) has determined that your proposal to develop the above-described parcel is not likely to result in the take of threatened or endangered species. This determination is based on the information submitted by your office on November 21, 2024 and reviewed by staff from the Division of Fish and Wildlife. Though Kamer blue butterflies (Lycaeides melissa samuelis) and Frosted elfins (Callophrys irus) occur nearby, there is no suitable habitat on this parcel for either species. Therefore, no permit is required at this time pursuant to the implementing regulations (6NYCRR Part 182) of the New York State Endangered Species Act (Article 11-0535). Be advised that any changes in location, expansion of the footprint of the project, modifications of the scope, or changes in the timing of proposed actions that are not identified in the submission referenced above may trigger DEC authorization. Please reinitiate contact with this office if such activities are contemplated. Please note that this letter does not relieve you of the responsibility of obtaining any necessary permits or approvals from the DEC, other agencies or local municipalities. Sincerely, Beth A. Magee Deputy Regional Permit Administrator ec: Jed Hayden — DEC Kathy O'Brien — DEC Division of Environmental Permits, Region 5 232 Golf Course Road Warrensburg, NY 12885 1 www.dec.ny.gov I P: (518) 623-1200 1 F: (518)623-3603 USDA United States A product of the National Custom Soil Resource Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for N ��� States Department of Agriculture and other Saratoga Federal agencies, State Natural agencies including the Resources Agricultural Experiment County, New Conservation Stations, and local Service participants York j.- , dft f: fit I I III � f 0 900 ft October 17, 2024 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nres.usda.gov/wps/ portal/nres/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nres)or your NRCS State Soil Scientist(http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/? cid=nres142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice)or(202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface....................................................................................................................2 How Soil Surveys Are Made..................................................................................5 SoilMap.................................................................................................................. 8 SoilMap................................................................................................................9 Legend................................................................................................................10 MapUnit Legend................................................................................................ 11 MapUnit Descriptions.........................................................................................11 Saratoga County, New York............................................................................13 SeB—Scio silt loam, 3 to 8 percent slopes................................................. 13 Ud—Udipsamments, dredged.....................................................................14 Wa—Wareham loamy sand.........................................................................15 WnA—Windsor loamy sand, 0 to 3 percent slopes.....................................16 WnB—Windsor loamy sand, 3 to 8 percent slopes.....................................18 WnC—Windsor loamy sand, 8 to 15 percent slopes...................................19 References............................................................................................................21 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil 5 Custom Soil Resource Report scientists classified and named the soils in the survey area, they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil-landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and 6 Custom Soil Resource Report identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. 7 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 8 Custom Soil Resource Report Soil Map a v � 8Q6 596000 596101 596210 596.'300 596400 596500 596600 43°3'ST'N SR- r � 43°3 ST N ra 1 � K 1 a 7 a y - i 4 N V x +1. r V � - y r C _S pp mo r v it li thi scale. 43°3'26'N - 43°3'26'N 59M 596100 596200 596300 596400 596500 596600 3 3 co fn Map Scale:1:4,530 if printed on A portrait(8.5"x 11")sheet. Meters N 0 50 100 201 301 Feet 0 200 400 800 1200 Map projection:Web Mercator Comer coordinates:WGS84 Edge tics:UTM Zone 18N WGS84 9 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest(AOI) Spoil Area The soil surveys that comprise your AOI were mapped at 0 Area of Interest(AOI) Stony Spot 1:24,000. Soils Very Stony Spot 0 Soil Map Unit Polygons Warning:Soil Map may not be valid at this scale. Wet Spot P1 0 Soil Map Unit Lines Enlargement of maps beyond the scale of mapping can cause Other misunderstanding of the detail of mapping and accuracy of soil � Soil Map Unit Points 9 pp 9 Y .- Special Line Features line placement.The maps do not show the small areas of Special Point Features contrasting soils that could have been shown at a more detailed Lo Blowout Water Features scale. - Streams and Canals Borrow Pit Transportation Please rely on the bar scale on each map sheet for map Clay Spot 1-44 Rails measurements. Closed Depression Interstate Highways Gravel Pit Source of Map: Natural Resources Conservation Service US Routes Web Soil Survey URL: Gravelly Spot Major Roads Coordinate System: Web Mercator(EPSG:3857) 0 Landfill Local Roads Maps from the Web Soil Survey are based on the Web Mercator Lava Flow Background projection,which preserves direction and shape but distorts distance and area.A projection that preserves area,such as the Marsh or swamp Aerial Photography Albers equal-area conic projection,should be used if more Mine or Quarry accurate calculations of distance or area are required. Miscellaneous Water This product is generated from the USDA-NRCS certified data as Perennial Water of the version date(s)listed below. Rock Outcrop Soil Survey Area: Saratoga County, New York Saline Spot Survey Area Data: Version 24,Aug 29,2024 Sandy Spot Soil map units are labeled(as space allows)for map scales Severely Eroded Spot 1:50,000 or larger. Sinkhole Date(s)aerial images were photographed: Sep 9,2022—Oct 22, Slide or Slip 2022 oa Sodic Spot The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps.As a result,some minor shifting of map unit boundaries may be evident. 10 Custom Soil Resource Report Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI SeB Scio silt loam,3 to 8 percent 0.3 0.4% slopes Ud Udipsamments,dredged 12.1 13.6% Wa Wareham loamy sand 0.0 0.0% WnA Windsor loamy sand,0 to 3 6.1 6.9% percent slopes WnB Windsor loamy sand,3 to 8 46.8 52.7% percent slopes WnC Windsor loamy sand,8 to 15 23.5 26.5% percent slopes Totals for Area of Interest 88.8 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it 11 Custom Soil Resource Report was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 12 Custom Soil Resource Report Saratoga County, New York SeB—Scio silt loam, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 9wcm Elevation: 100 to 1,000 feet Mean annual precipitation: 36 to 48 inches Mean annual air temperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: All areas are prime farmland Map Unit Composition Scio and similar soils: 70 percent Minor components: 30 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Scio Setting Landform: Lake plains Landform position (two-dimensional): Summit Landform position (three-dimensional):Tread Down-slope shape: Concave Across-slope shape: Convex Parent material: Glaciolacustrine deposits, eolian deposits, or old alluvium, comprised mainly of silt and very fine sand Typical profile H1 - 0 to 4 inches: silt loam H2-4 to 23 inches: silt loam H3- 23 to 72 inches: silt loam Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table:About 18 to 24 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 1 percent Available water supply, 0 to 60 inches: Moderate (about 8.4 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B/D Ecological site: F144AY026CT- Moist Silty Outwash Hydric soil rating: No Minor Components Unadilla Percent of map unit: 10 percent 13 Custom Soil Resource Report Hydric soil rating: No Raynham Percent of map unit: 10 percent Hydric soil rating: No Deerfield Percent of map unit: 5 percent Hydric soil rating: No Hudson Percent of map unit: 5 percent Hydric soil rating: No Ud—Udipsamments, dredged Map Unit Setting National map unit symbol: 9wcy Elevation: 20 to 340 feet Mean annual precipitation: 36 to 48 inches Mean annual air temperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: Not prime farmland Map Unit Composition Udipsamments, dredged, and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Udipsamments, Dredged Typical profile H1 - 0 to 6 inches: loamy sand H2- 6 to 72 inches: loamy sand Properties and qualities Slope: 0 to 8 percent Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Capacity of the most limiting layer to transmit water(Ksat): High to very high (5.95 to 99.90 in/hr) Depth to water table: More than 80 inches Frequency of flooding: Occasional Frequency of ponding: None Available water supply, 0 to 60 inches: Low(about 3.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7s Hydrologic Soil Group: A Hydric soil rating: Unranked 14 Custom Soil Resource Report Minor Components Limerick Percent of map unit:4 percent Landform: Flood plains Hydric soil rating: Yes Teel Percent of map unit: 3 percent Hydric soil rating: No Tioga Percent of map unit: 3 percent Hydric soil rating: No Wa—Wareham loamy sand Map Unit Setting National map unit symbol: 9wd4 Elevation: 100 to 1,000 feet Mean annual precipitation: 36 to 48 inches Mean annual air temperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: Farmland of statewide importance Map Unit Composition Wareham, poorly drained, and similar soils: 70 percent Minor components: 30 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Wareham, Poorly Drained Setting Landform: Depressions Landform position (two-dimensional):Toeslope Landform position (three-dimensional):Tread Down-slope shape: Concave Across-slope shape: Concave Parent material: Sandy glaciofluvial or deltaic deposits Typical profile Oi-0 to 2 inches: slightly decomposed plant material H2- 2 to 8 inches: loamy sand H3- 8 to 19 inches: loamy sand C- 19 to 72 inches: sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained 15 Custom Soil Resource Report Capacity of the most limiting layer to transmit water(Ksat): Moderately high to high (0.20 to 5.95 in/hr) Depth to water table:About 0 to 18 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 5.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4w Hydrologic Soil Group: A/D Ecological site: F144AY028MA-Wet Outwash Hydric soil rating: Yes Minor Components Wareham, somewhat poorly drained Percent of map unit: 10 percent Hydric soil rating: No Deerfield Percent of map unit: 5 percent Hydric soil rating: No Raynham Percent of map unit: 5 percent Hydric soil rating: No Cheektowaga Percent of map unit: 5 percent Landform: Depressions Hydric soil rating: Yes Scarboro Percent of map unit: 5 percent Landform: Depressions Hydric soil rating: Yes WnA—Windsor loamy sand, 0 to 3 percent slopes Map Unit Setting National map unit symbol: 2svkg Elevation: 0 to 990 feet Mean annual precipitation: 36 to 71 inches Mean annual air temperature: 39 to 55 degrees F Frost-free period: 140 to 240 days Farmland classification: Farmland of statewide importance Map Unit Composition Windsor, loamy sand, and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. 16 Custom Soil Resource Report Description of Windsor, Loamy Sand Setting Landform: Outwash plains, outwash terraces, deltas, dunes Landform position (three-dimensional):Tread, riser Down-slope shape: Linear, convex Across-slope shape: Linear, convex Parent material: Loose sandy glaciofluvial deposits derived from granite and/or loose sandy glaciofluvial deposits derived from schist and/or loose sandy glaciofluvial deposits derived from gneiss Typical profile O- 0 to 1 inches: moderately decomposed plant material A - 1 to 3 inches: loamy sand Bw-3 to 25 inches: loamy sand C-25 to 65 inches: sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Runoff class: Low Capacity of the most limiting layer to transmit water(Ksat): Moderately high to very high (1.42 to 99.90 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline (0.0 to 1.9 mmhos/cm) Available water supply, 0 to 60 inches: Low (about 3.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A Ecological site: F144AY022MA- Dry Outwash Hydric soil rating: No Minor Components Deerfield, loamy sand Percent of map unit: 10 percent Landform: Deltas, terraces, outwash plains Landform position (two-dimensional): Footslope Landform position (three-dimensional):Tread, talf Down-slope shape: Linear Across-slope shape: Linear Hydric soil rating: No Hinckley, loamy sand Percent of map unit: 5 percent Landform: Deltas, kames, eskers, outwash plains Landform position (two-dimensional): Summit, shoulder, backslope Landform position (three-dimensional): Nose slope, side slope, crest, head slope, rise Down-slope shape: Convex Across-slope shape: Convex, linear 17 Custom Soil Resource Report Hydric soil rating: No WnB—Windsor loamy sand, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 2svkf Elevation: 0 to 1,210 feet Mean annual precipitation: 36 to 71 inches Mean annual air temperature: 39 to 55 degrees F Frost-free period: 140 to 250 days Farmland classification: Farmland of statewide importance Map Unit Composition Windsor and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Windsor Setting Landform: Outwash terraces Landform position (three-dimensional):Tread Down-slope shape: Linear Across-slope shape: Linear Parent material: Loose sandy glaciofluvial deposits derived from granite and/or schist and/or gneiss Typical profile Oe -0 to 1 inches: moderately decomposed plant material A - 1 to 3 inches: loamy sand Bw-3 to 25 inches: loamy sand C-25 to 65 inches: sand Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Runoff class: Negligible Capacity of the most limiting layer to transmit water(Ksat): Moderately high to very high (1.42 to 99.90 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water supply, 0 to 60 inches: Low(about 4.5 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A Ecological site: F145XY008MA- Dry Outwash 18 Custom Soil Resource Report Hydric soil rating: No Minor Components Hinckley Percent of map unit: 10 percent Landform: Eskers Landform position (three-dimensional): Side slope Down-slope shape: Convex Across-slope shape: Convex Ecological site: F145XY008MA- Dry Outwash Hydric soil rating: No Deerfield, loamy sand Percent of map unit: 5 percent Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape: Linear Across-slope shape: Linear Ecological site: F144AY027MA- Moist Sandy Outwash Hydric soil rating: No WnC—Windsor loamy sand, 8 to 15 percent slopes Map Unit Setting National map unit symbol: 2svkq Elevation: 0 to 1,260 feet Mean annual precipitation: 36 to 71 inches Mean annual air temperature: 39 to 55 degrees F Frost-free period: 140 to 240 days Farmland classification: Not prime farmland Map Unit Composition Windsor and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Windsor Setting Landform:—error in exists on— Landform position (two-dimensional): Summit, shoulder, backslope Landform position (three-dimensional): Side slope, riser Down-slope shape: Convex Across-slope shape: Convex, linear Parent material: Loose sandy glaciofluvial deposits derived from granite and/or loose sandy glaciofluvial deposits derived from schist and/or loose sandy glaciofluvial deposits derived from gneiss Typical profile Oe -0 to 1 inches: moderately decomposed plant material 19 Custom Soil Resource Report Ap- 1 to 11 inches: loamy sand Bw- 11 to 31 inches: loamy sand C-31 to 65 inches: sand Properties and qualities Slope: 8 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Runoff class: Low Capacity of the most limiting layer to transmit water(Ksat): Moderately high to very high (1.42 to 99.90 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline (0.0 to 1.9 mmhos/cm) Available water supply, 0 to 60 inches: Low (about 4.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: A Ecological site: F144AY022MA- Dry Outwash Hydric soil rating: No Minor Components Hinckley Percent of map unit: 10 percent Landform: Deltas, kames, eskers, outwash plains Landform position (two-dimensional): Summit, shoulder, backslope Landform position (three-dimensional): Nose slope, side slope, crest, head slope, rise Down-slope shape: Convex Across-slope shape: Convex, linear Hydric soil rating: No Deerfield Percent of map unit: 5 percent Landform: Deltas, terraces, outwash plains Landform position (two-dimensional): Footslope Landform position (three-dimensional):Tread, talf Down-slope shape: Linear Across-slope shape: Linear Hydric soil rating: No 20 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/ nres/detail/national/soils/?cid=nres 142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http:// www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nres142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/ home/?cid=nres142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 21 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/ nres/detail/soils/scientists/?cid=nres142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/? cid=nres142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. 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IF ALTERED, THE I / / / \ `` , \—-1 _ / / r —'/'— / / / / / / __ \\ SHEET FLOW ` ( / // I y / \ ALTERING ENGINEER SHALL AFFIX TO THE DOCUMENT THEIR SEAL, THE NOTATION Q /III \ / / / i /— I / / --/— / �// 1 / �\_ —�' \ A / \ l \ ` \ "ALTERED BY" FOLLOWED BY THEIR SIGNATURE, THE DATE OF SUCH ALTERATION, AND I 0�__-_ I I -- -// - _/--- _ __--- / / l / 100 LF @ 1.6� J / / / ( / 1 A SPECIFIC DESCRIPTION OF THE ALTERATION. / o s\ \ Ill \ \ \ \ s �- ri- //- \_�_ _ / //_- / /-� --///- _- - _� " - ,/ (� �1� t r � � IIII ..�.- Jl/I ) l- I / ( J \ I // \ \ l I \\ \— /— _ —/_ / —/ ,/ J/_ �—/_�//—_/ / J- y/— / ` - _——— /// / / _ \ / I I ' / - COPYRIGHT©2025 VERITY ENGINEERING D.P.C. 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I J I I I I Q vy /14,3-j4�f ---� _ —VV l� 'w —w -J _ ` SHALLOW CON. H° � N \� T ?- Ii� c\ _ - \_/J c_�_\- ___ —-_��- _--_ ---H-E ------- --- � -6@6Ho ---= 625 LF @ 1.25% \\\\\ 91.25' SHEET FLOW T-•7 -__—_—_--_-�-_ -- - ---_ ---- --------------------------- - - \\\\\\\� (PAVEMENT) � = _--_--- � 39�t1 _ — - —— — � \\ \\ \\�\\ I a - ----_-_-- __------ AREA: ----- --- _ \ \ \_\ 33 LF @ 2%i - - _- ______ DA-101.1 ---__-_------------------ \ / \ \ \\\ /^�\ -- \ _----- 30,262 SF. ---r ---- ) \� \\\\\\ /I / � �` >G' SHEET FLOW ------ _------- - CN: 72 - / o ter/ / \�� 11 } -��� f' \\ \\ y / /� \CQ \ �\ \ / ! / 5��. O - - L�� (LAWN); — --_ --- ----\ - '`� TC: 9.3 MIN. - / / / /� \\I \ \ \' /` �\ \\�/L � - \\ \ �\_-\ / !p 40 \ 19 LF @ 6%j J / --J / -/ ` Nt l \� \ ( /r \) 1 \\\\\^/ / J // J L"\ ' - -} � _ `_ _— /_ii�/ii' —_' / t e/ / I r^`r ) // / / r/ ✓ /—` / / / \ \ / / ,r 1 } , Lr // Z \—/ I ( / / / ' Cn CL _�� ` =—_ __ �_ _��' /' // 1 \� \ / n// / /� WnC ^op _ `1 �_= _/ / r / / v / _ �/ _// 8 to 15 ercent slo es �/ // // // / � / r/ \\ I w / \ / \J J / Windsor loamy sand, r14 I \ \ �\ � / � .� / J' � I / J / / / - // ' HSG: A / lo- \ r � ,�—'�/ / /\ �� \ � � /— IIII / / / /'�/ � / / /' / � ,� _i' / / l , / /-- -- / \ \ 'Wn6 � y l \\ /-_ ( -.�// / // J /// � =/-J // / -/ / / /f/ // / � � / / � ''1/ /-,�/� --� � /-'��// -/j/ /� __IIII�/_- r ...I � I -� f�\\\\ ` \- _ //� �n cD / Windsor loamy sand, \�/ \ _ / / // J r f "� - `�V_ r - \ , \\\\ I \ \ \ w /' / / \ \ // 1 / ,_`/ /�"^`�'�'-� / -,�J/ � //J^ ram, // r.. / // / /f �_ J '� � /,�_/ ��/-' ..,r-/ � / / �� !// � /-�/ `\ \\ \ �...� J/° N o - - 3 to 8 percent slopes / / / / // r / _J/i/ /' r// / / l // i/ '/ _ / , ' 1\ \\\\ ✓ HSG: A X Ile D� �� \/ 1 \\ C�\\\` \_-_—-Jam\ I I a LC /J / ' / f J/ / LEG r -// / _ PEFI�VI� GRa \O'�/ER \ / / �`/ — f , / — / / __1— / / ICr� J (WO6RLAr sH 6AWN)4 Ile J\ /� ,L r \ ^ ` PROPOSED DRAINAGE w IMPEODCOR Ve wcn CONDITIONS _ _/ _ /GRAPH)C S E _ ) \ \ J / /_ / /� / -- 1 /� _J ) / / / / /�—v _/' /' \ / / /'\ 50 ✓ /0 25 50 J _�00 �� 1 20; �jDR - PR IW FEET Ir / _ — / / / l /— 1/ ]rirrct( _ /'§Q .'tt`\ _ 2 of 2 Appendix H NYSDEC Green Infrastructure Worksheets and Additional Calculations Stormwater Pollution Prevention Plan(SWPPP) H 20 Skyward Drive February 2025 NOI QUESTIONS # NOI Question Reported Value cf of 28 Total Water Quality Volume (WQv) Required 26821 1.000 30 Total RRV Provided 26821 1 31 Is RRv Provided >_WQv Required? Yes 32 Minimum RRv 22085 0.507 32a Is RRv Provided >_ Minimum RRv Required? Yes 33a Total WQv Treated 0 0.000 34 Sum of Volume Reduced &Treated 26821 0.616 35 Is Sum RRv Provided and WQv Provided >_WQv Required? No Step 1 - Site Planning Practice Description Applicable Project Specific Evaluation Preservation Delineate and protect The project does not propose permanent of undisturbed forests,native conservation of this area at this time. Much of Undisturbed vegetated areas,riparian N/A the site must be disturbed to accommodate the Areas corridors,water bodies, development and required stormwater wetlands and natural terrain. oractices. Delineate and protect naturally Preservation vegetated buffers along N/A There are no water bodies located on or of Buffers perennial streams,rivers, adjacent to the project site. shorelines and wetlands. �' Limit clearing and grading to Clearing and grading will be limited to the area of disturbance and will be minimized to the o Reduction of the minimum amount needed greatest extent practical.The limits of all c for roads,driveways, o Clearing and foundations utilities and Yes proposed clearing will be demarcated in the m Grading , field with orange construction fencing,prior to Nstormwater management construction,to prevent unnecessary removal c facilities. 0 lof trees. c� Avoid sensitive resource a areas such as floodplains, Locating steep slopes,erodible soils, Development There are no floodplains,steep slopes, in Less `Wetlands,mature forests and N/A erodible soils,wetlands,mature forests or m critical habitats by locating ii Sensitive critical habitats located on the project site. Areas development to fit the terrain in areas that will create the m 2 Use clustering,conservation The site layout has been designed to maximize ° design or open space design open space.Impervious surfaces have been 116 Open Space Z to reduce impervious cover, Yes minimized to the greatest extent practical and y Design preserve more open space approximately-1.5 acres will be maintained as d IL` and protect water resources. vegetated open space. Restore the original properties and porosity of the soil by deep till and amendment with All disturbed areas will be restored in Soil compost to reduce the accordance with the Soil Restoration Restoration generation of runoff and Yes requirements in Table 5.3 of the Design enhance the runoff reduction Manual. performance of post construct on nract— Minimize roadway widths and Roadway lengths,below local N/A No new roadways are proposed as part of this Reduction requirements,to reduce site project. impervious area Minimize sidewalk lengths and Sidewalk widths have been minimized to 5-ft Sidewalk widths,below local Yes and quantity of sidewalk has been reduced to Reduction requirements,to reduce site that required to ensure safe pedestrian access impervious area throughout the site. d 0 U V1 'o Minimize driveway lengths and 2 Driveway widths,below local No Reducing the driveway width is not feasible for E Reduction requirements,to reduce site the intended use. o impervious area 0 U N � Minimize the number of cul-de- Cul-desac sacs and incorporate N/A No cul-de-sacs are proposed as part of this Reduction landscaped areas to reduce project. their impervious cover. Reduce the impervious Building footprint of residences and Footprint commercial buildings by using Yes All new building area has been allocated to Reduction alternate or taller buildings efficiently implement the intended use. while maintaining the same floor to area ratio. e uce imperviousness on parking lots by eliminating unneeded spaces,providing compact car spaces and efficient parking lanes, Parking reducing stall dimensions Yes The project proposes to provide banked Reduction below local requirements, parking to reduce impervious cover. using porous pavement surfaces in overflow parking areas,and using multi-storied parking decks where Step 2 - Calculate Water Quality Volume Is this project subject to Section 4.3 of the NYS Design Manual for Enhanced Phosphorus Removal? No What is the nature of this construction project? New Construction Design Point:1 1 1 Enter 90%Rainfall Event as P P=J 1.15 1 inches Calculate Required WQv Drainage Area Contributing Impervious Area Percent WQv SMP Number Area (Acres) Impervious Rv (cf) Description (Acres) % 1 1.70 0.98 58 0.57 4,028 Infiltration Basin 2 8.42 5.60 66 0.65 22,793 Infiltration Basin 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Total 1 10.12 1 6.58 1 65 0.63 26821 1 Required WQvJ 0.62 laf Step 3- Evaluation of RR Techniques and Standard SMPs with RRv Capacity Practice Description Applicable Project Specific Evaluation Retain the pre-development hydrologic and water quality characteristics of undisturbed natural areas by permanently Conservation of Natural conserving these areas on a site.Undisturbed natural areas No The project does not propose permanent conservation of these Areas(RR-1) include:forest retention areas;reforestation areas;stream areas at this time. and river corridors;shorelines;wetlands,vernal pools,and associated vegetated buffers; and undisturbed open space. Undisturbed natural areas such as forested conservation E Sheet Flow to Riparian areas and stream buffers or vegetated filter strips and Buffer/Filter Strip(RR-2) riparian buffers can be used to treat and control stormwater NIA The project site does not contain any riparian buffers. r runoff from some areas of a development promect. Plant or conserve trees to reduce stormwater runoff,increase Tree Planting/Tree Pit/Tree nutrient uptake,and provide bank stabilization.Trees can be Tree plantings/tree pits/tree trenches are proposed on site. Trench(RR-3) used for applications such as landscaping,stormwater No However,credit for these trees will not be taken toward area management practice areas,conservation areas and erosion reduction/volume reduction in the RRv calculations. and sediment control. Direct runoff from rooftop areas and upland overland runoff Disconnection of Rooftop flow to designated pervious areas to reduce runoff volumes No Due to the size/use/layout of the proposed building(s),rooftop Runoff(RR-4) disconnect is not proposed at this time. and rates. The natural drainage paths,or properly designed vegetated channels,can be used instead of constructing underground Due to flat topography/steep topography/etc.,vegetated swales Vegetated Swale(RR-5) storm sewers or concrete open channels to increase time of No are not feasible for use on the project site. concentration,reduce the peak discharge,and provide infiltration. Manage and treat small volumes of stormwater runoff using a Due to the scale of the proposed development,rain gardens are Rain Garden(RR-6) conditioned planting soil bed and planting materials to filter o not feasible for use on the project site. runoff stored within a shallow depression. Small landscaped stormwater treatment devices that can be w designed as infiltration or filtering practices.Stormwater Due to the scale of the building and required access points, Stormwater Planter(RR-7) No � planters use soil infiltration and biogeochemical processes to stormwater planters are not feasible for use on the project site. 'c decrease stormwater quantity and improve water quality. t Rainwater Harvesting Capture and store stormwater runoff to be used for irrigation NO Rainwater harvesting is not proposed on-site due to the minimal System (RR-8) systems or filtered and reused for non-contact activities. opportunities to reuse rainwater at the proposed site. Pervious types of pavements that provide an alternative to conventional paved surfaces,designed to infiltrate rainfall Due to heavy vehicle traffic,porous pavement is not feasible for Porous Pavement (RR-9) through the surface,thereby reducing stormwater runoff from No use on the project site. a site and providing some pollutant uptake in the underlying soils. Capture runoff by a layer of vegetation and soil installed on top of a conventional flat or sloped roof.The rooftop EXAMPLES-Due to the size of the proposed building and cost Green Roof(RR-10) vegetation allows evaporation and evapotranspiration No limitations,a green roof is not feasible for use on the project site. processes to reduce volume and discharge rate of runoff entering conveyance system. Stream Daylight previously-culverted/piped streams to Stream Daylighting(RR-11) restore natural habitats,better attenuate runoff by increasing N/A No stream daylighting opportunities are present on the site. the storage size,promoting infiltration,and help reduce pollutant loads. An infiltration practice that stores the water quality volume in Infiltration Trench(1-1) the void spaces of a gravel trench before it is infiltrated into N/A Another acceptable practice has been selected. the ground. An infiltration practice that stores the water quality volume in Infiltration basins are proposed on-site to treat 10.12 acres of T Infiltration Basin(1-2) a shallow depression,before it is infiltrated it into the ground. Yes impervious area.Calculations have been provided in the sWPPP. cc cc Dry Well(1-3) An infiltration practice similar in design to the infiltration N/A Another acceptable practice has been selected. c� trench,and best suited for treatment of rooftop runoff, af' An infiltration practice below grade that stores the water Underground Infiltration quality volume in pre-manufactured pipes,vaults or other N/A Another acceptable practice has been selected. System(I-4) modular structures,before it is infiltrated into the ground. a Infiltration Bioretention(F-4) 2 through a soil matrix,before it is infiltrated into the round. U) A shallow depression that treats stormwater as it flows '2 Filtration Bioretention(F-5) through a soil matrix and is returned to the storm drain N/A Another acceptable practice has been selected. m ° system. c 0 Permeable engineered soil media that is installed along rn Bioslope(F-6) embankments or other slopes,designed to capture and treat N/A Another acceptable practice has been selected. stormwater runoff from ad'acent paved areas. An open drainage channel or depression explicitly designed Dry Swale(0-1) to detain and promote the filtration of stormwater runoff into N/A Another acceptable practice has been selected. the soil media. Step 4 - Calcuate Minimum RRv Required Enter the Soils Data for the site Hydrologic Soil Acres S Group A 10.12 55% B 40% C 30% D 20% Total Area 10.121 Calculate the Minimum RRv S = 0.55 Impervious = 10.12 acres Precipitation 1.15 inches Rv 0.95 Minimum RRv 1 0.507 of 22085 lcf Steps 3 and 5 - Apply RR Techniques and Standard SMPs Runoff Reduction Volume and Treated Volumes Total Total WQV Runoff Reduction Tech iques/Standard Contributing Contributing Reduced WQv Treated SMps Area Impervious (RRv) Area 4 (acres) (acres) (cf) (cf) Conservation of Natural Areas RR-1 0.00 0 Sheet Flow to Riparian Buffer/Filter Strip RR-2 0.00 0.00 0 Tree Planting/Tree Pit/Tree Trench RR-3 0.00 0.00 0 ayi Disconnection of Rooftop Runoff RR-4 0.00 0 Vegetated Swale RR-5 0.00 0.00 0 s Rain Garden RR-6 0.00 0.00 0 Stormwater Planter RR-7 0.00 0.00 0 Rainwater Harvesting Systems RR-8 0.00 0.00 0 Porous Pavement RR-9 0.00 0.00 0 Green Roof(Extensive & Intensive) RR-10 0.00 0.00 0 Stream Daylighting RR-11 _ Infiltration Trench 1-1 0.00 0.00 0 0 3 Infiltration Basin 1-2 10.12 6.58 26,821 0 � w � '� Dry Well 1-3 0.00 0.00 0 0 Cn Underground Infiltration System 1-4 0.00 0.00 0 0 > Infiltration Bioretention F-4 0.00 0.00 0 0 �a Filtration Bioretention F-5 1.70 0.98 0 0 Bioslo e F-6 0.00 0.00 0 0 Dry swale 0-1 0.00 0.00 0 0 Micropool Extended Detention P-1 0.00 0.00 0 Wet Pond P-2 0.00 0.00 0 Wet Extended Detention P-3 0.00 0.00 0 Multiple Pond System P-4 0.00 0.00 0 a- Shallow Wetland W-1 0.00 0.00 0 Extended Detention Shallow Wetland W-2 0.00 0.00 0 Pond/Wetland System W-3 0.00 0.00 0 Pocket Wetland W-4 0.00 0.00 0 Gravel Wetland W-5 0.00 0.00 0 Surface Sand Filter F-1 0.00 0.00 0 Underground Sand Filter F-2 0.00 0.00 0 Perimeter Sand Filter F-3 0.00 0.00 0 Wet Swale 0-2 0.00 0.00 0 w Flow Based Alternative Practice - 0.00 0.00 0 a a U) Volume Based Alternative Practice - Totals by RR Technique 0.00 0.00 0 Totals by Standard SMP w/RRV 11.82 7.55 26,821 0 Totals by Standard SMP 0.00 0.00 0 Totals by Alternative SMP 0.00 0.00 0 Totals ( RR Techniques + all SMPs) 11.82 7.55 26,821 0 Infiltration Basin (1-2) Design Point: 1 Enter Site Data For Drainage Area to be Treated by Practice Contributing Impervious Percent Drainage Area WQv Precipitation Number Area Area Impervious Rv (cf) (in) Description (Acres) (Acres) % 1 1.70 0.98 58 0.57 4,028 1.15 Infiltration Basin Design Criteria Enter underlying soil infiltration rate(based on 20 geotechnical testing, refer to Appendix D Is the contributing area to the practice an No "Infiltration Restricted"stormwater hotspot? Is the contributing area to the practice an No "Infiltration Prohibited"stormwater hotspot? Maximum contributing area(acres) 50 Is the contributing area greater than the No maximum allowed contributing area? Enter depth to seasonal high water table(ft) >10 Enter depth to bedrock(ft) >10 Enter pretreatment volume provided (cf) 2329 Enter depth of freeboard (ft) 1 Enter depth of basin (ft) 2.5 Enter slope of maintenance access(%) 2 Enter width of maintenance access(ft) 12 Sizing Criteria Value Units Notes Water Quality Volume WQv 4028 cf Basin depth db 2.5 ft Required Surface Area Ab 1,611 sf Enter Surface Area Provided Ab 4335 sf Determine Runoff Reduction RRv Provided 4,028 cf Infiltration Basin (1-2) Design Point: 1 Enter Site Data For Drainage Area to be Treated by Practice Contributing Impervious Percent Drainage Area WQv Precipitation Number Area Area Impervious Rv (cf) (in) Description (Acres) (Acres) % 2 8.42 5.60 66 0.65 22,793 1.15 Infiltration Basin Design Criteria Enter underlying soil infiltration rate(based on 20 geotechnical testing, refer to Appendix D Is the contributing area to the practice an No "Infiltration Restricted"stormwater hotspot? Is the contributing area to the practice an No "Infiltration Prohibited"stormwater hotspot? Maximum contributing area(acres) 50 Is the contributing area greater than the No maximum allowed contributing area? Enter depth to seasonal high water table(ft) >10 Enter depth to bedrock(ft) >10 Enter pretreatment volume provided (cf) 15740 Enter depth of freeboard (ft) 1 Enter depth of basin (ft) 4 Enter slope of maintenance access(%) 2 Enter width of maintenance access(ft) 12 Sizing Criteria Value Units Notes Water Quality Volume WQv 22793 cf Basin depth db 4.0 ft Required Surface Area Ab 5,698.00 sf Enter Surface Area Provided Ab 12129 sf Determine Runoff Reduction RRv Provided 22,793 cf Appendix I Pre-Development Drainage Calculations Stormwater Pollution Prevention Plan(SWPPP) I 20 Skyward Drive February 2025 3S ) ( i S DA-3 DA-2 1 .2S DA-1 .2 1L 1 . 1 S DP-1 DA-1 . 1 SubCat Reach on Link Routing Diagram for 24-024 DR-EX Prepared by Verity Engineering, DPC, Printed 2/20/2025 HydroCAD®10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC 24-024 DR-EX Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 2 Rainfall Events Listing Event# Event Storm Type Curve Mode Duration B/B Depth AMC Name (hours) (inches) 1 1-yr Type II 24-hr Default 24.00 1 2.23 2 2 10-yr Type II 24-hr Default 24.00 1 3.71 2 3 25-yr Type II 24-hr Default 24.00 1 4.54 2 4 100-yr Type II 24-hr Default 24.00 1 6.19 2 24-024 DR-EX Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 3 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: DA-1.1 Runoff Area=30,294 sf 53.59% Impervious Runoff Depth=0.39" Flow Length=677' Tc=9.3 min CN=72 Runoff=0.36 cfs 0.023 of Subcatchment 1.2S: DA-1.2 Runoff Area=113,808 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=245' Tc=19.6 min CN=43 Runoff=0.00 cfs 0.000 of Subcatchment2S: DA-2 Runoff Area=98,213 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=379' Tc=40.9 min CN=43 Runoff=0.00 cfs 0.000 of Subcatchment3S: DA-3 Runoff Area=272,292 sf 0.00% Impervious Runoff Depth=0.00" Flow Length=623' Tc=40.3 min CN=43 Runoff=0.00 cfs 0.000 of Link 1 L: DP-1 Inflow=0.36 cfs 0.023 of Primary=0.36 cfs 0.023 of 24-024 DR-EX Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 4 Summary for Subcatchment 1.1 S: DA-1.1 Runoff = 0.36 cfs @ 12.03 hrs, Volume= 0.023 af, Depth= 0.39" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 14,059 43 Woods/grass comb., Fair, HSG A 16,235 98 Paved parking, HSG A 30,294 72 Weighted Average 14,059 46.41% Pervious Area 16,235 53.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment 1.1S: DA-1.1 Hydrograph 0.4 0.38 0.36 cfs -Runoff 0.32 - - 1 - - - - � �Tq � 0.34 �1 L�-IIr 0.3 ��rR f6l l:2.i3 0.28 -T T E T 1 � Fturiatf:Ar"a :3�,i9�-- 0.26 0.24 D T E TI -Ru�dffWuJ6�.02�af 0.22 - - 3 0.2 LL 0.18 0.12 fi l fi l rt �Tc7-9. r1ni� 0.1 0.08 14I;7� 0.06 0.02 I � fi t 0.0 - I - fi Irt - - fi l 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 1.2S: DA-1.2 Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 113,808 43 Woods/grass comb., Fair, HSG A 113,808 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.7 100 0.0160 0.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 2.7 109 0.0090 0.66 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.2 36 0.1700 2.89 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 19.6 245 Total Subcatchment 1.2S: DA-1.2 Hydrograph 1 I I i I I 11 —Runoff �yl a 11124-h'r 1 1 1 11 yrl Rainfall=2.13�' IRunbft Alreill=l 13,80$ 4 N I IRuhoff IV61u'me=0.000 d U RUOOff Popth=0.001' LL l l l l FIoW Leingth=24�' ITe=19.6 min C N=43 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 2S: DA-2 Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 98,213 43 Woods/grass comb., Fair, HSG A 98,213 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 34.9 100 0.0070 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.80" 6.0 279 0.0239 0.77 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.9 379 Total Subcatchment 2S: DA-2 Hydrograph 1 —Runoff Type 11 24-h r 1-yr Rainfall=2.23" Runoff Area=98,213 sf N Runoff Volume=0.000 of Runoff Depth=0.00" U- Flow Length=379' Tc=40.9 m i n C N=43 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 3S: DA-3 Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 272,292 43 Woods/grass comb., Fair, HSG A 272,292 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.7 100 0.0120 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 21.6 523 0.0065 0.40 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.3 623 Total Subcatchment 3S: DA-3 Hydrograph 1 1 —Runoff �ylpe II 24-hlr 1 11�yrl Rainfall=2.23" IRunbff Alre�=272,292 sf N I I Ruh6ff IV6Iu'me=0.000 cif U 3 1 1 1 1 Runoff pgpth=0.001' O LL FIoW Leingth=623' ITq=40.3 m i n C N 4�3 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 8 Summary for Link 1 L: DP-1 Inflow Area = 3.308 ac, 11.27% Impervious, Inflow Depth = 0.08" for 1-yr event Inflow = 0.36 cfs @ 12.03 hrs, Volume= 0.023 of Primary = 0.36 cfs @ 12.03 hrs, Volume= 0.023 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link 1 L: DP-1 Hydrograph 0.4 0.38 - 0.36 cfs -Inflow 0.34 - IIIv�A ea=J.JVV aV 0.3 -Primary 0.32 FI7 T 17 FI -] T 1-1 - 028 - - - - - - 1-1 - - - - 1-1 -T - 0.24 - - - - 1-1 - - - - 1-1 -T - a 0.18 - 0.16 - - - 1-1 - - - - - - 0.12 - - - - - - - - - - - 0.08 - r fi - - - - - - - 0.06 - 0.04 - I � I fi l rt t- I -1 fi l I rt t- 0.02 - 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 9 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: DA-1.1 Runoff Area=30,294 sf 53.59% Impervious Runoff Depth=1.26" Flow Length=677' Tc=9.3 min CN=72 Runoff=1.34 cfs 0.073 of Subcatchment 1.2S: DA-1.2 Runoff Area=113,808 sf 0.00% Impervious Runoff Depth=0.08" Flow Length=245' Tc=19.6 min CN=43 Runoff=0.02 cfs 0.017 of Subcatchment2S: DA-2 Runoff Area=98,213 sf 0.00% Impervious Runoff Depth=0.08" Flow Length=379' Tc=40.9 min CN=43 Runoff=0.02 cfs 0.015 of Subcatchment3S: DA-3 Runoff Area=272,292 sf 0.00% Impervious Runoff Depth=0.08" Flow Length=623' Tc=40.3 min CN=43 Runoff=0.05 cfs 0.041 of Link 1 L: DP-1 Inflow=1.34 cfs 0.090 of Primary=1.34 cfs 0.090 of 24-024 DR-EX Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 1.1 S: DA-1.1 Runoff = 1.34 cfs @ 12.02 hrs, Volume= 0.073 af, Depth= 1.26" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 14,059 43 Woods/grass comb., Fair, HSG A 16,235 98 Paved parking, HSG A 30,294 72 Weighted Average 14,059 46.41% Pervious Area 16,235 53.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment 1.1S: DA-1.1 Hydrograph 1.34 cfs —Runoff �yl a 11124-h'r , 0 yrl Rlair�fall=1. 1�' 1 - — Ftuno"rea=30,294-sf- N I I IRuh6ff'V61UMe=0.073 cif U 3 I I Runoff 00pth=1 .267 0 Flout Leingth=C771' Tc=9.3 m i CNI7� II 0 L.... 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 11 Summary for Subcatchment 1.2S: DA-1.2 Runoff = 0.02 cfs @ 15.12 hrs, Volume= 0.017 af, Depth= 0.08" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 113,808 43 Woods/grass comb., Fair, HSG A 113,808 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.7 100 0.0160 0.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 2.7 109 0.0090 0.66 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.2 36 0.1700 2.89 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 19.6 245 Total Subcatchment 1.2S: DA-1.2 Hydrograph 0.024 0.022 0.02 cfs - — —Runoff 0.021 1A 4-- 1 4 A 4- 11 4 k- 1 --4 14 0.02 p�,�p�pe I I� �j-I�r 0.018 1 t t 1 1 t t 1 t 1 I -L � hOLYiLR' -�,f Il Till 0.018 0.01 1 � T I � E � 1-1 �RWio#�� Are1a�14-3,�0$�f 0.016 'u �[] � a 0.014 � n�q#VqI4Yn1e Imo.Q'7�f Oil 0.012 LL _4 4_ _1 4 _4 4_ 1_� 4 t7 0.009 _ 1 11" �nat 0.008 9 0.006 0.0051 � L 1: :1 L 1 EIS 1: 1 1 � I � 0.004 0.003 0.002 I � 1 � I � 1 4 � I � � I � 0.001 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment 2S: DA-2 Runoff = 0.02 cfs @ 15.40 hrs, Volume= 0.015 af, Depth= 0.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 98,213 43 Woods/grass comb., Fair, HSG A 98,213 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 34.9 100 0.0070 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.80" 6.0 279 0.0239 0.77 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.9 379 Total Subcatchment 2S: DA-2 Hydrograph 0.02 0.019 0.02 cfs _ _ -Runoff 0.018 1 -4 1 4 -4 4- 1 1 4 k-- 1 --4 4- IT_��4p �n 0.016 1 -4 4 1 4 k 4- 1 1 4 k- i-O / Ra��f � � 0.015 7 0.014 1 A 4 1 4 k -4 1 1 4 Rulneiff A► eat=918,213-40 0.012 1 -t 1 4 --t 1 -�Rlll;nqff Vo4mle".0�--qf LL 0.009 0.008 7=' 0.007 — — — — — — — — — — — — —40 VL 0.006 -1 t- 1 � t1 1 - I � tI I -td 0.005 0.004 I -t f 1 � I -t t I 1 - � I � t 1-1 -t � 1 -1 0.003 0.002 —t t 1 -t —t t I I t- I -t �- I 0.001 0 i i '0 , j I -F�111 I 1 1. 1 1 i. H..I i 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 13 Summary for Subcatchment 3S: DA-3 Runoff = 0.05 cfs @ 15.44 hrs, Volume= 0.041 af, Depth= 0.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 272,292 43 Woods/grass comb., Fair, HSG A 272,292 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.7 100 0.0120 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 21.6 523 0.0065 0.40 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.3 623 Total Subcatchment 3S: DA-3 Hydrograph 0.055 0.05 cfs —Runoff 0.05 ICI 4 -4 4- 1I k-- 1 4 1 4 0.045 � OL �1 I I -t — 1 a j pf 112 y�R �f�ll 3-.J1 0 04 I rt 1 I rtRU-How Arela*2712,292-9f 0.035 y�ngff VqI�me�O.Q4�1 a�f a a 0.025 0.02 o1iiV o.; - 0.01 I 1 4 � I �I � 1 � I �I 4- 1-1 4 1A 0.005 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 14 Summary for Link 1 L: DP-1 Inflow Area = 3.308 ac, 11.27% Impervious, Inflow Depth = 0.33" for 10-yr event Inflow = 1.34 cfs @ 12.02 hrs, Volume= 0.090 of Primary = 1.34 cfs @ 12.02 hrs, Volume= 0.090 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link 1 L: DP-1 Hydrograph 1.34 cfs —Inflow —Primary Inflow Area=3.368 ac 1 w w 3 0 LL 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 15 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: DA-1.1 Runoff Area=30,294 sf 53.59% Impervious Runoff Depth=1.85" Flow Length=677' Tc=9.3 min CN=72 Runoff=2.00 cfs 0.107 of Subcatchment 1.2S: DA-1.2 Runoff Area=113,808 sf 0.00% Impervious Runoff Depth=0.24" Flow Length=245' Tc=19.6 min CN=43 Runoff=0.14 cfs 0.051 of Subcatchment2S: DA-2 Runoff Area=98,213 sf 0.00% Impervious Runoff Depth=0.24" Flow Length=379' Tc=40.9 min CN=43 Runoff=0.10 cfs 0.044 of Subcatchment3S: DA-3 Runoff Area=272,292 sf 0.00% Impervious Runoff Depth=0.24" Flow Length=623' Tc=40.3 min CN=43 Runoff=0.27 cfs 0.123 of Link 1 L: DP-1 Inflow=2.00 cfs 0.159 of Primary=2.00 cfs 0.159 of 24-024 DR-EX Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment 1.1 S: DA-1.1 Runoff = 2.00 cfs @ 12.01 hrs, Volume= 0.107 af, Depth= 1.85" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 14,059 43 Woods/grass comb., Fair, HSG A 16,235 98 Paved parking, HSG A 30,294 72 Weighted Average 14,059 46.41% Pervious Area 16,235 53.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment 1.1S: DA-1.1 Hydrograph 2.00 cfs —Runoff 2 I -1 T T FIB � y��e 11 24-hr y �5 rl Rlair�fall=4.54�' ku6off Area=30,294 slf N I IRuh6ff V61ume=0.107 cif U I Roolff 00pt,h=1 .$57 FIoW Leingth=C771' Tc=9.3 m i q I CNI7� 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 17 Summary for Subcatchment 1.2S: DA-1.2 Runoff = 0.14 cfs @ 12.30 hrs, Volume= 0.051 af, Depth= 0.24" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 113,808 43 Woods/grass comb., Fair, HSG A 113,808 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.7 100 0.0160 0.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 2.7 109 0.0090 0.66 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.2 36 0.1700 2.89 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 19.6 245 Total Subcatchment 1.2S: DA-1.2 Hydrograph 0.15 - 0.14 0.14 cfs _ __ I-- JJ -Runoff 0.13 L L I I LI L I 1L L I I L yl e1�14rti1r 0.12 1 Itl I -tL rR - �� 0.11 2�5-�yr R fall-4.64 o. L L 1 I I I -]R6i6#I A�e�-- IA""f w L I 1 I t I I Au-ftdf -V61U =b.05'ralf 0 0.07 L L I I L I 1 L LRU0Off DOPOFLO.241LL ' 0.06 L I 1t1 1 -tL -FIIGYV "Igt"a 4- ' 0.0 L L L L I L L I L rc�--��'19 r�ii n 0.04 0.03 I � LI III LI rt rI � NI41 0.02 0.01 L L 1-I L I -I L L L L L- L L I- 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 18 Summary for Subcatchment 2S: DA-2 Runoff = 0.10 cfs @ 12.78 hrs, Volume= 0.044 af, Depth= 0.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 98,213 43 Woods/grass comb., Fair, HSG A 98,213 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 34.9 100 0.0070 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.80" 6.0 279 0.0239 0.77 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.9 379 Total Subcatchment 2S: DA-2 Hydrograph 0.11 0.105 0.10 cfs —Runoff 0.1 0.095 - � 1 4 0.09 �2"- 0.085 - - - - - 0.075 1- 1 I - 1- 1 -f k r o#f-Arya=9$,�1�-4 o.o� 0.065 - - 1 1 - 1 -RU it f -VMU 6=0.04�alf 0.06 ro°0 05 - - - - - — °004 - - 1- - I I - 1 1 - - TIi� �Irqth- f79 °003 -4 4- 1I 11 -4 41 40 rein 0.025 3 0.015 0.01 - - 1 - - I - f- 1 - - - - I 0.005 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 19 Summary for Subcatchment 3S: DA-3 Runoff = 0.27 cfs @ 12.77 hrs, Volume= 0.123 af, Depth= 0.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 272,292 43 Woods/grass comb., Fair, HSG A 272,292 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.7 100 0.0120 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 21.6 523 0.0065 0.40 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.3 623 Total Subcatchment 3S: DA-3 Hydrograph 0.3 0.27 cfs —Runoff 0.26 I I I iy I1'2"- 0.24I �2�5- Ra�irfa-111-'4.6-4�' 0.22 w 0.18 --t L H 1 -1 + 1 1 -Rutr6ff-VbIUM6=b.f2I-6f = 0.16 U. 0.12 t 1 I t- I I t I I L L -Il" "Inqt"&2'2' 0.1 0.08 L L 1 I L 11 1 1 L L I L L�- n3 0.06 L t I L fi 1- N 4l" 0.04 0.02 L L - L L _ 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 20 Summary for Link 1 L: DP-1 Inflow Area = 3.308 ac, 11.27% Impervious, Inflow Depth = 0.57" for 25-yr event Inflow = 2.00 cfs @ 12.01 hrs, Volume= 0.159 of Primary = 2.00 cfs @ 12.01 hrs, Volume= 0.159 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link 1 L: DP-1 Hydrograph 2.00 cfs —Inflow —Primary 2 Inflow Area=3.308 ac N I II w 3 0 1 FL 0 L ...... 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 21 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: DA-1.1 Runoff Area=30,294 sf 53.59% Impervious Runoff Depth=3.15" Flow Length=677' Tc=9.3 min CN=72 Runoff=3.41 cfs 0.183 of Subcatchment 1.2S: DA-1.2 Runoff Area=113,808 sf 0.00% Impervious Runoff Depth=0.75" Flow Length=245' Tc=19.6 min CN=43 Runoff=1.29 cfs 0.162 of Subcatchment2S: DA-2 Runoff Area=98,213 sf 0.00% Impervious Runoff Depth=0.75" Flow Length=379' Tc=40.9 min CN=43 Runoff=0.68 cfs 0.140 of Subcatchment3S: DA-3 Runoff Area=272,292 sf 0.00% Impervious Runoff Depth=0.75" Flow Length=623' Tc=40.3 min CN=43 Runoff=1.90 cfs 0.388 of Link 1 L: DP-1 Inflow=3.84 cfs 0.345 of Primary=3.84 cfs 0.345 of 24-024 DR-EX Type/1 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 22 Summary for Subcatchment 1.1 S: DA-1.1 Runoff = 3.41 cfs @ 12.01 hrs, Volume= 0.183 af, Depth= 3.15" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 14,059 43 Woods/grass comb., Fair, HSG A 16,235 98 Paved parking, HSG A 30,294 72 Weighted Average 14,059 46.41% Pervious Area 16,235 53.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment 1.1S: DA-1.1 Hydrograph 3.41 cfs —Runoff �Z' 611 124-h1r 3fi I- �1�0 Syr Raall=6.4' l l l l ku6off Area=30,294 Slf N I I IRuh6ff V61UM6=0.183 of 2 RUOOff Popfh=3.1151' FIoW Leingth=C771' 9N=7? II � I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 23 Summary for Subcatchment 1.2S: DA-1.2 Runoff = 1.29 cfs @ 12.18 hrs, Volume= 0.162 af, Depth= 0.75" Routed to Link 1 L : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 113,808 43 Woods/grass comb., Fair, HSG A 113,808 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.7 100 0.0160 0.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 2.7 109 0.0090 0.66 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.2 36 0.1700 2.89 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 19.6 245 Total Subcatchment 1.2S: DA-1.2 Hydrograph 1.29 cfs —Runoff �yl el 11124-h1r 1 1 1160 yrl Rairifallk.4. 1 -1 t t-- IRtn6ft Ares=i 1�- 06-4- N I I IRuhoff IWlu'me=0.162 d U 1 1 1 1 RUOOff 00pth=0.751' LL FIoW Leingth=�4�' 1 1 l l l l l l ITe=19.6 min C N=43 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 24 Summary for Subcatchment 2S: DA-2 Runoff = 0.68 cfs @ 12.51 hrs, Volume= 0.140 af, Depth= 0.75" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 98,213 43 Woods/grass comb., Fair, HSG A 98,213 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 34.9 100 0.0070 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.80" 6.0 279 0.0239 0.77 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.9 379 Total Subcatchment 2S: DA-2 Hydrograph 0.75 0.7 0.68 cfs _ - J —Runoff 0.65 L L 1 1 L 11 L I 1 L L 11 e 1112 0.6 L L L I r - �� 0.55 1�0-- R fall6.�— 0.5 L L L U L I L F u rioff�►r�a�9$, 1 �s�f 0.45 L L L I L I -Ru�tdff-Vblur 6=0.UO-cif w c U. 0.35 L L I L I 1 L I 1 L LF�u�o-1 �OPOFL- .751' 0.3 L L I fi t L I Tl1oW "l9t"M 002 LLI I L LLIIL— — — - — — — — — — — — �90r�iin 0.15 L L L L fi I I L r -1 41" 0.1 0.05 1 L L L L L 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 25 Summary for Subcatchment 3S: DA-3 Runoff = 1.90 cfs @ 12.50 hrs, Volume= 0.388 af, Depth= 0.75" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 272,292 43 Woods/grass comb., Fair, HSG A 272,292 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.7 100 0.0120 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 21.6 523 0.0065 0.40 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.3 623 Total Subcatchment 3S: DA-3 Hydrograph 2 1.90 cfs 11 —Runoff �ylpe II 24-hlr l l l l 1160�yrl Rainfall=6.19- IRunbff Alre�=272,29$ sf N I I Ruh6ff IV61ufine=0.388 aff U 1 — — 4 — Ru"Off pgpth----,-0.751'— FIoW Leingth=623' ITq=40.3 m i n CN=413 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-EX Type 1124-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 26 Summary for Link 1 L: DP-1 Inflow Area = 3.308 ac, 11.27% Impervious, Inflow Depth = 1.25" for 100-yr event Inflow = 3.84 cfs @ 12.03 hrs, Volume= 0.345 of Primary = 3.84 cfs @ 12.03 hrs, Volume= 0.345 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link 1 L: DP-1 Hydrograph 4 3.84 cfs —Inflow —Primary Inflow Area=3.368 ac 3 w 0 2 LL 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) Appendix J Post-Development Drainage Calculations Stormwater Pollution Prevention Plan(SWPPP) J 20 Skyward Drive February 2025 4S SC-1 4 8S cs SC-108 6P —� 5P --0 3P 2P STMH-4 STMH-3� STMH-2 STMH-1 \ Infiltration asin#2 O5S 6S 7S 2S SC-105 SC-106 SC-107 SC-102� 3S 1P � SC-103 Infiltration Basin#1 _U DP-1 SC-101.2 DP-1 1.1S SC-101.1 SubCat Reach on Link Routing Diagram for 24-024 DR-PR Prepared by Verity Engineering, DPC, Printed 2/20/2025 HydroCAD®10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC 24-024 DR-PR Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 2 Rainfall Events Listing Event# Event Storm Type Curve Mode Duration B/B Depth AMC Name (hours) (inches) 1 1-yr Type II 24-hr Default 24.00 1 2.23 2 2 10-yr Type II 24-hr Default 24.00 1 3.71 2 3 25-yr Type II 24-hr Default 24.00 1 4.54 2 4 100-yr Type II 24-hr Default 24.00 1 6.19 2 24-024 DR-PR Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 3 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: SC-101.1 Runoff Area=30,262 sf 55.89% Impervious Runoff Depth=0.39" Flow Length=677' Tc=9.3 min CN=72 Runoff=0.36 cfs 0.023 of Subcatchment 1.2S: SC-101.2 Runoff Area=58,539 sf 4.89% Impervious Runoff Depth=0.00" Flow Length=892' Tc=20.8 min CN=42 Runoff=0.00 cfs 0.000 of Subcatchment2S: SC-102 Runoff Area=67,129 sf 63.46% Impervious Runoff Depth=0.54" Tc=6.0 min CN=76 Runoff=1.37 cfs 0.069 of Subcatchment3S: SC-103 Runoff Area=6,854 sf 0.00% Impervious Runoff Depth=0.00" Tc=6.0 min CN=39 Runoff=0.00 cfs 0.000 of Subcatchment4S: SC-104 Runoff Area=224,463 sf 55.19% Impervious Runoff Depth=0.39" Tc=6.0 min CN=72 Runoff=3.13 cfs 0.170 of Subcatchment5S: SC-105 Runoff Area=39,675 sf 100.00% Impervious Runoff Depth=2.00" Tc=6.0 min CN=98 Runoff=2.76 cfs 0.152 of Subcatchment6S: SC-106 Runoff Area=40,651 sf 100.00% Impervious Runoff Depth=2.00" Tc=6.0 min CN=98 Runoff=2.83 cfs 0.156 of Subcatchment7S: SC-107 Runoff Area=39,673 sf 100.00% Impervious Runoff Depth=2.00" Tc=6.0 min CN=98 Runoff=2.76 cfs 0.152 of Subcatchment8S: SC-108 Runoff Area=22,460 sf 0.00% Impervious Runoff Depth=0.00" Tc=6.0 min CN=39 Runoff=0.00 cfs 0.000 of Pond 1 P: Infiltration Basin#1 Peak EIev=322.05' Storage=99 cf Inflow=1.37 cfs 0.069 of Discarded=1.01 cfs 0.069 of Secondary=0.00 cfs 0.000 of Outflow=1.01 cfs 0.069 of Pond 2P: Infiltration Basin#2 Peak EIev=316.32' Storage=3,276 cf Inflow=11.24 cfs 0.629 of Discarded=4.80 cfs 0.633 of Primary=0.00 cfs 0.000 of Outflow=4.80 cfs 0.633 of Pond 3P: STMH-1 Peak EIev=318.95' Inflow=8.35 cfs 0.460 of 30.0" Round Culvert n=0.012 L=59.0' S=0.0034 '/' Outflow=8.35 cfs 0.460 of Pond 4P: STMH-2 Peak EIev=319.73' Inflow=8.35 cfs 0.460 of 30.0" Round Culvert n=0.012 L=272.0' S=0.0026 '/' Outflow=8.35 cfs 0.460 of Pond 5P: STMH-3 Peak EIev=320.22' Inflow=5.59 cfs 0.308 of 30.0" Round Culvert n=0.012 L=271.0' S=0.0026 '/' Outflow=5.59 cfs 0.308 of Pond 6P: STMH-4 Peak EIev=320.90' Inflow=2.76 cfs 0.152 of 24.0" Round Culvert n=0.012 L=264.0' S=0.0025'/' Outflow=2.76 cfs 0.152 of Link DP-1: DP-1 Inflow=0.36 cfs 0.023 of Primary=0.36 cfs 0.023 of 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 4 Summary for Subcatchment 1.1S: SC-101.1 Runoff = 0.36 cfs @ 12.03 hrs, Volume= 0.023 af, Depth= 0.39" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 16,913 98 Paved parking, HSG A 13,349 39 >75% Grass cover, Good, HSG A 30,262 72 Weighted Average 13,349 44.11% Pervious Area 16,913 55.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment MS: SC-101.1 Hydrograph 0.4 0.38 0.36 cfs -Runoff 0.34 - -I - I I I 1 - I � T 0.3 - - - I FL�-1 1 r 0.28 7 T I I F 1 1 T I I -T �r�atf�Ar"k�,"1-4 0.26 0.24 -1 T I I E 1 1 T 1 1 l U-ft6ff-W uJ =0.023--6f 0.22 - - 3 0.2 -1 - I 1 -t -rI�u1 o f PeOb# O-W' LL 0.18 0.14 -T - I - 1 0.16 - 1 - - I- - - - - - I' 0.12 fi l fi l rt �Tc79. r1ni� 0.1 14:;7 0.06 I - fi l � I - I - fi - 0.04 I � fi t I � fi rt � I � fi l 0.02 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 1.2S: SC-101.2 Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 2,863 98 Paved parking, HSG A 55,676 39 >75% Grass cover, Good, HSG A 58,539 42 Weighted Average 55,676 95.11% Pervious Area 2,863 4.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 100 0.0290 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 7.7 792 0.0130 1.71 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 20.8 892 Total Subcatchment 1.2S: SC-101.2 Hydrograph 1 1 —Runoff l u l l �yl a II 24-hlr 1 1 1 11 yrl Rainfall=2.23" l l l l l l l 1 1 kunotf Ar6a�=5853§ Slf N I Ruh6ff IV6Iu'me=0.000 cif 3 1 1 1 1 Runoff Depth=0.001' 0 LL FIoW Leingth=892' ITq=20.8 min C N=4� 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 2S: SC-102 Runoff = 1.37 cfs @ 11.99 hrs, Volume= 0.069 af, Depth= 0.54" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 42,597 98 Paved parking, HSG A 24,532 39 >75% Grass cover, Good, HSG A 67,129 76 Weighted Average 24,532 36.54% Pervious Area 42,597 63.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: SC-102 Hydrograph 1.37 cfs —Runoff Type 11 24-h r 1-yr Rainfall=2.23" 1 Runoff Area=67,129 sf N (Runoff Volume=0.069 of Runoff Depth=0.54" Tc=6.0 m i n CN=76 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 3S: SC-103 Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 6,854 39 >75% Grass cover, Good, HSG A 6,854 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 3S: SC-103 Hydrograph 1 1 —Runoff �yl a II 24-hlr 1 1 1 11 yrl Rainfall=2.13�' IRunbft Alrea=6,854 slf N I Ruh6ff V6Idme=0.000 of U 3 I I Runolff pelpth=0.001' O LL CN73P 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 4S: SC-104 Runoff = 3.13 cfs @ 11.99 hrs, Volume= 0.170 af, Depth= 0.39" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 123,880 98 Unconnected pavement, HSG A 93,021 39 >75% Grass cover, Good, HSG A 7,562 43 Woods/grass comb., Fair, HSG A 224,463 72 Weighted Average 100,583 44.81% Pervious Area 123,880 55.19% Impervious Area 123,880 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: SC-104 Hydrograph I 3.13 cfs 1 _ —Runoff 3 iy L I L Il el IC2 - r 1 1 1 11 Yrl Rainfall=2.13�' IRunbff Alrea=�24,463 4 2 -Rulndff V61Umb=0.170-6f- 3 0 1 1 1 1 1 1 Runoff popth=0.391' LL TC=6.0 Iniq 0 L - 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment 5S: SC-105 Runoff = 2.76 cfs @ 11.96 hrs, Volume= 0.152 af, Depth= 2.00" Routed to Pond 6P : STMH-4 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 39,675 98 Roofs, HSG A 39,675 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: SC-105 Hydrograph 3 — — 2.76 cfs 1 —Runoff �yl a II 24-hlr 1 1 1 11 yrl Rainfall=2.13�' 2 Juno"r"a =39,67�-SIf- N I Ruh6ff V6Idm6=0.152 d U 3 I I Runolff 00pth=2.001' O LL TC=6.0 Iniq 1 T 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 6S: SC-106 Runoff = 2.83 cfs @ 11.96 hrs, Volume= 0.156 af, Depth= 2.00" Routed to Pond 5P : STMH-3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 40,651 98 Roofs, HSG A 40,651 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 6S: SC-106 Hydrograph 3 2.83 cfs 1 Runoff 1 1 1 �yl a II 24-hlr 1 1 1 11 yrl Rainfall=2.13�' 2 _ _I _I kunotf Ar6a�40,651 Slf N I I Ruh6ff IV6Idmb=0.156 6f U 3 I I Runolff 00pth=2.001' O LL TC=6.0 Iniq �N7 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 11 Summary for Subcatchment 7S: SC-107 Runoff = 2.76 cfs @ 11.96 hrs, Volume= 0.152 af, Depth= 2.00" Routed to Pond 4P : STMH-2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 39,673 98 Roofs, HSG A 39,673 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: SC-107 Hydrograph 3 — — 2.76 cfs 1 —Runoff �yl a II 24-hlr 1 1 1 11 yrl Rainfall=2.13�' 2 Juno"r"a =39,67�-SIf- N I Ruh6ff V6Idm6=0.152 d U 3 I I Runolff 00pth=2.001' O LL TC=6.0 Iniq 1 T 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment 8S: SC-108 Runoff = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.23" Area (sf) CN Description 22,460 39 >75% Grass cover, Good, HSG A 22,460 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 8S: SC-108 Hydrograph 1 1 —Runoff �yl a II 24-hlr 1 1 1 11 yrl Rainfall=2.13�' Runoff Area=22,466 slf N I I Ruh6ff WlUme=0.000 of U Runolff pelpth=0.001' LL CN73P 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 13 Summary for Pond 1 P: Infiltration Basin #1 Inflow Area = 1.698 ac, 57.58% Impervious, Inflow Depth = 0.49" for 1-yr event Inflow = 1.37 cfs @ 11.99 hrs, Volume= 0.069 of Outflow = 1.01 cfs @ 12.05 hrs, Volume= 0.069 af, Atten= 27%, Lag= 3.9 min Discarded = 1.01 cfs @ 12.05 hrs, Volume= 0.069 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 322.05' @ 12.04 hrs Surf.Area= 2,180 sf Storage= 99 cf Flood Elev= 330.00' Surf.Area= 5,520 sf Storage= 11,261 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 0.7 min ( 877.8 - 877.1 ) Volume Invert Avail.Storage Storage Description #1 322.00' 11,261 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 322.00 2,138 345.2 0 0 2,138 324.00 4,335 386.2 6,345 6,345 4,634 325.00 5,520 405.3 4,916 11,261 5,900 Device Routing Invert Outlet Devices #1 Discarded 322.00' 20.000 in/hr Exfiltration over Horizontal area #2 Secondary 324.50' 15.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Discarded OutFlow Max=1.01 cfs @ 12.05 hrs HW=322.05' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.01 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=322.00' TW=0.00' (Dynamic Tailwater) L2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 14 Pond 1 P: Infiltration Basin #1 Hydrograph 1.37 cfs —Inflow —Outflow —Discarded Inf ow Area=1 . L8ac —Secondary beak EjevlL12Z.6511 1.01 cfs motor e--6 4 IIII IIIIIIIIIIIIIIII IIIIIIIIIIIII LL ( IIIIIIIIIIIIIIII III IIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIII IIIII IIIIIIIIIIIIIIII 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 15 Summary for Pond 2P: Infiltration Basin #2 Inflow Area = 8.423 ac, 66.47% Impervious, Inflow Depth = 0.90" for 1-yr event Inflow = 11.24 cfs @ 11.97 hrs, Volume= 0.629 of Outflow = 4.80 cfs @ 12.09 hrs, Volume= 0.633 af, Atten= 57%, Lag= 6.7 min Discarded = 4.80 cfs @ 12.09 hrs, Volume= 0.633 of Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 316.32' @ 12.09 hrs Surf.Area= 10,361 sf Storage= 3,276 cf Flood Elev= 330.00' Surf.Area= 22,665 sf Storage= 59,805 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 2.5 min ( 800.0 - 797.5 ) Volume Invert Avail.Storage Storage Description #1 316.00' 59,805 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 316.00 10,038 548.2 0 0 10,038 318.00 12,129 581.3 22,134 22,134 13,220 319.00 20,464 680.7 16,116 38,250 23,223 320.00 22,665 715.9 21,555 59,805 27,197 Device Routing Invert Outlet Devices #1 Discarded 316.00' 20.000 in/hr Exfiltration over Horizontal area #2 Primary 316.50' 12.0" Round 12" Culvert L= 68.0' CMP, projecting, no headwall, Ke= 0.900 Inlet/Outlet Invert= 316.50' / 316.00' S= 0.0074 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.79 sf #3 Device 2 319.50' 24.0" x 24.0" Horiz. 24" x 24" Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=4.79 cfs @ 12.09 hrs HW=316.32' (Free Discharge) L1=Exfiltration (Exfiltration Controls 4.79 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=316.00' TW=0.00' (Dynamic Tailwater) L2=12" Culvert ( Controls 0.00 cfs) L3=24" x 24" Grate ( Controls 0.00 cfs) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 16 Pond 2P: Infiltration Basin #2 Hydrograph 12 11.24 cfs I —Inflow Ouw 11 — 1 —4 4-- �1 T —Discarded 10 Inflow Area=8.42� ac -Primary 9 l l rt Peak PI1e�rl i1�. T 1 Stor e �2i61 ci - 1 I � I L 1 -1 4.80 411111 IIIIIIIIII � � III 3 - 2 1 1 1 1 1I 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 17 Summary for Pond 3P: STMH-1 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 2.00" for 1-yr event Inflow = 8.35 cfs @ 11.96 hrs, Volume= 0.460 of Outflow = 8.35 cfs @ 11.96 hrs, Volume= 0.460 af, Atten= 0%, Lag= 0.0 min Primary = 8.35 cfs @ 11.96 hrs, Volume= 0.460 of Routed to Pond 2P : Infiltration Basin #2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 318.95' @ 11.96 hrs Flood Elev= 324.41' Device Routing Invert Outlet Devices #1 Primary 317.45' 30.0" Round Culvert L= 59.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 317.45' / 317.25' S= 0.0034 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=8.14 cfs @ 11.96 hrs HW=318.92' TW=316.16' (Dynamic Tailwater) L1=Culvert (Barrel Controls 8.14 cfs @ 3.89 fps) Pond 3P: STMH-1 Hydrograph 9 8.35 cfs _Inflow — L � —1 A1 in ow rea=2.7�5 ac 1 Peak-Elev=3495' _ ko 11 5 _IRoU nd Wvef a - — — LL 4 _ - - d�2 3 =moo, 2 S-=6'603�1/' II IIIIIIIIIII 1 T T 7 T T 17 T 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 18 Summary for Pond 4P: STMH-2 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 2.00" for 1-yr event Inflow = 8.35 cfs @ 11.96 hrs, Volume= 0.460 of Outflow = 8.35 cfs @ 11.96 hrs, Volume= 0.460 af, Atten= 0%, Lag= 0.0 min Primary = 8.35 cfs @ 11.96 hrs, Volume= 0.460 of Routed to Pond 3P : STMH-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 319.73' @ 11.98 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.15' 30.0" Round Culvert L= 272.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.15' / 317.45' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=7.59 cfs @ 11.96 hrs HW=319.69' TW=318.92' (Dynamic Tailwater) L1=Culvert (Outlet Controls 7.59 cfs @ 3.42 fps) Pond 4P: STMH-2 Hydrograph 9 8.35 cfs _Inflow — 4 —1 A1 L I — Primary in ow rea=2.7�5 ac 1ea1�lev- 41t3, 6 1 — I- -I I- - -I �0'.0 , 5 _IRau�nd Wvef v — — — LL 4 _ - - d�2 3 L1 27 2 — — — — S-=6'bQ26W/' II IIIIIIIIIII 1- T T 7 T F17 T 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 19 Summary for Pond 5P: STMH-3 Inflow Area = 1.844 ac,100.00% Impervious, Inflow Depth = 2.00" for 1-yr event Inflow = 5.59 cfs @ 11.96 hrs, Volume= 0.308 of Outflow = 5.59 cfs @ 11.96 hrs, Volume= 0.308 af, Atten= 0%, Lag= 0.0 min Primary = 5.59 cfs @ 11.96 hrs, Volume= 0.308 of Routed to Pond 4P : STMH-2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 320.22' @ 11.99 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.85' 30.0" Round Culvert L= 271.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.85' / 318.15' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=4.75 cfs @ 11.96 hrs HW=320.17' TW=319.69' (Dynamic Tailwater) L1=Culvert (Outlet Controls 4.75 cfs @ 2.62 fps) Pond 5P: STMH-3 Hydrograph 6 5.59 cfs _Inflow Primary 5 inilow'Ar' eal =11 .'8�4 'ac T T I T I T IT T I T FI Peak Elev=� .T- .�21 4 �01.-o„ N Round, 6ulvelri 0 3 T 14 1 nl-O.1612 LL LI 27� �-01111 211111 IIIIIIIIIII �=6.6026 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 1-yrRainfa/1=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 20 Summary for Pond 6P: STMH-4 Inflow Area = 0.911 ac,100.00% Impervious, Inflow Depth = 2.00" for 1-yr event Inflow = 2.76 cfs @ 11.96 hrs, Volume= 0.152 of Outflow = 2.76 cfs @ 11.96 hrs, Volume= 0.152 af, Atten= 0%, Lag= 0.0 min Primary = 2.76 cfs @ 11.96 hrs, Volume= 0.152 of Routed to Pond 5P : STMH-3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 320.90' @ 11.98 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 320.00' 24.0" Round Culvert L= 264.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 320.00' / 319.35' S= 0.0025 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 3.14 sf Primary OutFlow Max=2.48 cfs @ 11.96 hrs HW=320.88' TW=320.17' (Dynamic Tailwater) L1=Culvert (Outlet Controls 2.48 cfs @ 2.74 fps) Pond 6P: STMH-4 Hydrograph 3 _Inflow 2.76 cfs Primary Inflow lArea=0.19' 1 ac Peak IEllev=320.90' 2 4.-10 19 N IRound, 6u,lvelrt IIIIIIII LL n= .012 � I 1 - L-=264.0' S=6.60125 111 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 1-yrRainfall=2.23" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 21 Summary for Link DP-1: DP-1 Inflow Area = 10.462 ac, 57.85% Impervious, Inflow Depth = 0.03" for 1-yr event Inflow = 0.36 cfs @ 12.03 hrs, Volume= 0.023 of Primary = 0.36 cfs @ 12.03 hrs, Volume= 0.023 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link DP-1: DP-1 Hydrograph 0.4 0.38 - 0.36 cfs Inflow 0.36 T T T T T —Primary 0.34 - - Inflow Area=10.462 ac 0.32 - IT TT T 0.3 0.26 T T T T T1-1 T T T T1-1 T T - 0.24 — T T T1-1 T T T T1-1 T T o 02 T T 1-1 T T T T T T 1-1 T T T 0.18 — — 0.16 T T T T T T T1-1 T T - 0.12 - T - - T - - - - - - 0.08 - - T T 0.06 — 0.04 - I � 1 T l rt t- I _j fi l I rt t- 0.02 — 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 22 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: SC-101.1 Runoff Area=30,262 sf 55.89% Impervious Runoff Depth=1.26" Flow Length=677' Tc=9.3 min CN=72 Runoff=1.34 cfs 0.073 of Subcatchment 1.2S: SC-101.2 Runoff Area=58,539 sf 4.89% Impervious Runoff Depth=0.06" Flow Length=892' Tc=20.8 min CN=42 Runoff=0.01 cfs 0.007 of Subcatchment2S: SC-102 Runoff Area=67,129 sf 63.46% Impervious Runoff Depth=1.52" Tc=6.0 min CN=76 Runoff=4.08 cfs 0.195 of Subcatchment3S: SC-103 Runoff Area=6,854 sf 0.00% Impervious Runoff Depth=0.02" Tc=6.0 min CN=39 Runoff=0.00 cfs 0.000 of Subcatchment4S: SC-104 Runoff Area=224,463 sf 55.19% Impervious Runoff Depth=1.26" Tc=6.0 min CN=72 Runoff=11.23 cfs 0.541 of Subcatchment5S: SC-105 Runoff Area=39,675 sf 100.00% Impervious Runoff Depth=3.48" Tc=6.0 min CN=98 Runoff=4.66 cfs 0.264 of Subcatchment6S: SC-106 Runoff Area=40,651 sf 100.00% Impervious Runoff Depth=3.48" Tc=6.0 min CN=98 Runoff=4.77 cfs 0.270 of Subcatchment7S: SC-107 Runoff Area=39,673 sf 100.00% Impervious Runoff Depth=3.48" Tc=6.0 min CN=98 Runoff=4.66 cfs 0.264 of Subcatchment8S: SC-108 Runoff Area=22,460 sf 0.00% Impervious Runoff Depth=0.02" Tc=6.0 min CN=39 Runoff=0.00 cfs 0.001 of Pond 1 P: Infiltration Basin#1 Peak Elev=322.69' Storage=1,712 cf Inflow=4.08 cfs 0.195 of Discarded=1.30 cfs 0.197 of Secondary=0.00 cfs 0.000 of Outflow=1.30 cfs 0.197 of Pond 2P: Infiltration Basin#2 Peak Elev=317.34' Storage=14,354 cf Inflow=25.06 cfs 1.340 of Discarded=5.29 cfs 1.347 of Primary=0.00 cfs 0.000 of Outflow=5.29 cfs 1.347 of Pond 3P: STMH-1 Peak Elev=319.49' Inflow=14.09 cfs 0.798 of 30.0" Round Culvert n=0.012 L=59.0' S=0.0034 '/' Outflow=14.09 cfs 0.798 of Pond 4P: STMH-2 Peak EIev=320.35' Inflow=14.09 cfs 0.798 of 30.0" Round Culvert n=0.012 L=272.0' S=0.0026 '/' Outflow=14.09 cfs 0.798 of Pond 5P: STMH-3 Peak EIev=320.79' Inflow=9.43 cfs 0.534 of 30.0" Round Culvert n=0.012 L=271.0' S=0.0026 '/' Outflow=9.43 cfs 0.534 of Pond 6P: STMH-4 Peak EIev=321.29' Inflow=4.66 cfs 0.264 of 24.0" Round Culvert n=0.012 L=264.0' S=0.0025'/' Outflow=4.66 cfs 0.264 of Link DP-1: DP-1 Inflow=1.34 cfs 0.080 of Primary=1.34 cfs 0.080 of 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 23 Summary for Subcatchment 1.1S: SC-101.1 Runoff = 1.34 cfs @ 12.02 hrs, Volume= 0.073 af, Depth= 1.26" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 16,913 98 Paved parking, HSG A 13,349 39 >75% Grass cover, Good, HSG A 30,262 72 Weighted Average 13,349 44.11% Pervious Area 16,913 55.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment MS: SC-101.1 Hydrograph 1.34 cfs —Runoff �yl a 11124-h'r , 0 yrl Rlair�fall=1. 1�' 1 - — Ftuno"rea=30,26�-Sf- N IRuh6ff'V61UMe=0.073 cif U 3 I I Runoff 00pth=1 .267 0 Flout Leingth=C771' Tc=9.3 m i CNI7� II 0 L.... 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 24 Summary for Subcatchment 1.2S: SC-101.2 Runoff = 0.01 cfs @ 15.48 hrs, Volume= 0.007 af, Depth= 0.06" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 2,863 98 Paved parking, HSG A 55,676 39 >75% Grass cover, Good, HSG A 58,539 42 Weighted Average 55,676 95.11% Pervious Area 2,863 4.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 100 0.0290 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 7.7 792 0.0130 1.71 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 20.8 892 Total Subcatchment 1.2S: SC-101.2 Hydrograph 0.009 0.01 cfs —Runoff 0.009 -1 T 1 7 T 1 7 r 17 T IT- l 7 r ll � 0.008 �11�4-hr 0.007 l - - l 1 — l fi 1 1 rt r � 0.006 -1 -+ �- I --i T I Ru1n6ff-Arleal=58,639�lf 0.006 y 0.005 1 --1 1 4 I I' tfnq .I VgIt;mIe I".QO7-qf 0.003 1 - 1 4 --1 T 1 1 I IovIT 0 t . 0.003 M- 0.002 1 -t T 1 1 L -1 T 1-1 -L LI --� L 1 1 -L ( I 0.002 -t T 1 T F � T I1 7 F 17 T 11 7 F 1 -1 0.001 0.001 I � T rt r I T I rt r17 7 1 17 r I I 0.000 - 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 25 Summary for Subcatchment 2S: SC-102 Runoff = 4.08 cfs @ 11.98 hrs, Volume= 0.195 af, Depth= 1.52" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 42,597 98 Paved parking, HSG A 24,532 39 >75% Grass cover, Good, HSG A 67,129 76 Weighted Average 24,532 36.54% Pervious Area 42,597 63.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: SC-102 Hydrograph 4.08 cfs —Runoff 4 Type 11 24-h r 10-yr Rainfall=3.71 " 3 Runoff Area=67,129 sf N (Runoff Volume=0.195 of Runoff Depth=1 .52" FL 2 Tc=6.0 m i n CN=76 1 - 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 11 24-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 26 Summary for Subcatchment 3S: SC-103 Runoff = 0.00 cfs @ 24.00 hrs, Volume= 0.000 af, Depth= 0.02" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 6,854 39 >75% Grass cover, Good, HSG A 6,854 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 3S: SC-103 Hydrograph 0.001 0.000 - 0.00 cfs r —Runoff � � � I � 4- 1 � 1 � 4- 1 1 0.000 yp o.000 oo eM =ham 0.000 110�frtR�+nlf" 1 -1 1 1 --J t 1-1 -t L 1 -1 0.000 UhOff a�6 � fF 0.000 0.000 0.000 U10ff "I'�q=4 „ �fl -t1— I t I I -tI -I 0.000 000 7:q- o 4- 1 4 � 1 � 4- 1-1 4 � I --I LL 0.000 T6.V 0.000 N-3i 1 1 1 1 0.000 0.000 1 -t 4 1 1 -4 4- 1 4 �- 1 --4 4- 1-1 4 �- I --� 0.000 0.000 o I � fi l Irt I � fi l rt � I � fi l rt � I � 0 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 11 24-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 27 Summary for Subcatchment 4S: SC-104 Runoff = 11.23 cfs @ 11.98 hrs, Volume= 0.541 af, Depth= 1.26" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 123,880 98 Unconnected pavement, HSG A 93,021 39 >75% Grass cover, Good, HSG A 7,562 43 Woods/grass comb., Fair, HSG A 224,463 72 Weighted Average 100,583 44.81% Pervious Area 123,880 55.19% Impervious Area 123,880 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: SC-104 Hydrograph 12 11.23 cfs —Runoff 10 ype II 2 -hr 1 l rt �O Iyr R�air i a�11-1�1" 9 — — — _IRunbft Alrea=k4 40 4 8 a 7:- ##IV6I�Irn IQ 54 alb 0 6 -1 4 - 4 RUOOff-POpth=1 .261' LL 5 I � fi l rt fi l rt � I rt TlC Mid 4 I I I I I I I I I I I I I I I I I I I - NT7� 3 2 1 1 1 1 1 II 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 28 Summary for Subcatchment 5S: SC-105 Runoff = 4.66 cfs @ 11.96 hrs, Volume= 0.264 af, Depth= 3.48" Routed to Pond 6P : STMH-4 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 39,675 98 Roofs, HSG A 39,675 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: SC-105 Hydrograph 5 1 —Runoff 4.66 cfs 11 �yl el 11124-h1r 4 Rya i1•a 113. 1�~ y Runoff Area=39,67� slf N 3 4 -Rulndff V66me=0.264-0- U Runolff Popth=3.481' LL 2 -I -I + ETC=6.0In1Ill- CN=9� I I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 29 Summary for Subcatchment 6S: SC-106 Runoff = 4.77 cfs @ 11.96 hrs, Volume= 0.270 af, Depth= 3.48" Routed to Pond 5P : STMH-3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 40,651 98 Roofs, HSG A 40,651 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 6S: SC-106 Hydrograph 5 4.77 cfs — —Runoff �yl a II 24-hlr 4 _ _I , O I R- i17,aII=3.j1 Runoff Area=40,651 slf N 3 -J I L 1 -1 L -Rulndff V6IUnb-=-0.27Qa - 0 U 3 1 1 1 1 1 Runoff pelpth=3.481' LL CNT9� I � + + 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 30 Summary for Subcatchment 7S: SC-107 Runoff = 4.66 cfs @ 11.96 hrs, Volume= 0.264 af, Depth= 3.48" Routed to Pond 4P : STMH-2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 39,673 98 Roofs, HSG A 39,673 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: SC-107 Hydrograph 5 1 —Runoff 4.66 cfs 11 �yl el 11124-h1r 4 Rya i1•a 113. 1�~ y Runoff Area=39,67� slf N 3 4 -Rulndff V66me=0.264-0- U Runolff Popth=3.481' LL 2 -I -I + ETC=6.0In1Ill- CN=9� I I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 31 Summary for Subcatchment 8S: SC-108 Runoff = 0.00 cfs @ 24.00 hrs, Volume= 0.001 af, Depth= 0.02" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.71" Area (sf) CN Description 22,460 39 >75% Grass cover, Good, HSG A 22,460 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 8S: SC-108 Hydrograph 0.002 0.00 cfs —Runoff 0.002 � � T T F I 7 T I- T FIB T 1 1 7 F1 -1 0.001 ype-H 2 hi- 0.001 1 10--�r kR FfiIfa-l= 1 0.001 0.001 uiioff a*= 44 st I -i 1 I --1 L I 1 -L L- 1 -1 0.001 qPOff Y*I1UM =4 "fl -T F � T 1 7 F 1 � 0.001 � ° Qelp -� 4- 1 4 4- 1 4 �- LL 0.001 TVA 0.001 -L L -J L I -L L- I L L 1 1 L L- 1 -1 0.000 I � fi lI rt I � fi rt � I � fi tI rt � I � 0.000 0.000 I -t 41 4 I -4 4- 1I 4 1 --4 4- 1I 4 1 � 0.000 I I I I I I I I I I I I I 0 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 32 Summary for Pond 1 P: Infiltration Basin #1 Inflow Area = 1.698 ac, 57.58% Impervious, Inflow Depth = 1.38" for 10-yr event Inflow = 4.08 cfs @ 11.98 hrs, Volume= 0.195 of Outflow = 1.30 cfs @ 12.11 hrs, Volume= 0.197 af, Atten= 68%, Lag= 8.2 min Discarded = 1.30 cfs @ 12.11 hrs, Volume= 0.197 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 322.69' @ 12.11 hrs Surf.Area= 2,813 sf Storage= 1,712 cf Flood Elev= 330.00' Surf.Area= 5,520 sf Storage= 11,261 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 6.5 min ( 850.9 - 844.5 ) Volume Invert Avail.Storage Storage Description #1 322.00' 11,261 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 322.00 2,138 345.2 0 0 2,138 324.00 4,335 386.2 6,345 6,345 4,634 325.00 5,520 405.3 4,916 11,261 5,900 Device Routing Invert Outlet Devices #1 Discarded 322.00' 20.000 in/hr Exfiltration over Horizontal area #2 Secondary 324.50' 15.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Discarded OutFlow Max=1.30 cfs @ 12.11 hrs HW=322.69' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.30 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=322.00' TW=0.00' (Dynamic Tailwater) L2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 33 Pond 1 P: Infiltration Basin #1 Hydrograph 4.08 cfs I —Inflow —Outflow 4 --4 —Discarded Ilnf ow Area=1 .1 L81ac -Secondary 1 beak EjevIL12Z.6911 3 L I L I torage-11.7 2' c� hill illlllllll IIIII 3 IIII IIIIIIIIII IIIIII 0 u. 2 IIIII II IIIIII 1.30 cfs I I I I I I 1111111111 IIIIIIIIIII IIIII II � IIIIIIIIII 0.00 cfs Ir 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 34 Summary for Pond 2P: Infiltration Basin #2 Inflow Area = 8.423 ac, 66.47% Impervious, Inflow Depth = 1.91" for 10-yr event Inflow = 25.06 cfs @ 11.97 hrs, Volume= 1.340 of Outflow = 5.29 cfs @ 12.15 hrs, Volume= 1.347 af, Atten= 79%, Lag= 10.9 min Discarded = 5.29 cfs @ 12.15 hrs, Volume= 1.347 of Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 317.34' @ 12.15 hrs Surf.Area= 11,416 sf Storage= 14,354 cf Flood Elev= 330.00' Surf.Area= 22,665 sf Storage= 59,805 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 14.1 min ( 806.8 - 792.7 ) Volume Invert Avail.Storage Storage Description #1 316.00' 59,805 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 316.00 10,038 548.2 0 0 10,038 318.00 12,129 581.3 22,134 22,134 13,220 319.00 20,464 680.7 16,116 38,250 23,223 320.00 22,665 715.9 21,555 59,805 27,197 Device Routing Invert Outlet Devices #1 Discarded 316.00' 20.000 in/hr Exfiltration over Horizontal area #2 Primary 316.50' 12.0" Round 12" Culvert L= 68.0' CMP, projecting, no headwall, Ke= 0.900 Inlet/Outlet Invert= 316.50' / 316.00' S= 0.0074 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.79 sf #3 Device 2 319.50' 24.0" x 24.0" Horiz. 24" x 24" Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=5.28 cfs @ 12.15 hrs HW=317.34' (Free Discharge) L1=Exfiltration (Exfiltration Controls 5.28 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=316.00' TW=0.00' (Dynamic Tailwater) L2=12" Culvert ( Controls 0.00 cfs) L3=24" x 24" Grate ( Controls 0.00 cfs) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 35 Pond 2P: Infiltration Basin #2 Hydrograph 28 26 25.06 cfs _ —Inflow 24 L A L —Discarded 1�nf�w Area=8A423 ac —Primary 20 ea c iear il W-- 18-- 1 1. �41 Ci Siara e- 4-3 u 0_314 I I -T lL 12 10lllll IIIIIIIIIIIIIIIII 6 5.29 cfs I I I I I I I I I I I - - - - I I I I 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 36 Summary for Pond 3P: STMH-1 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 3.48" for 10-yr event Inflow = 14.09 cfs @ 11.96 hrs, Volume= 0.798 of Outflow = 14.09 cfs @ 11.96 hrs, Volume= 0.798 af, Atten= 0%, Lag= 0.0 min Primary = 14.09 cfs @ 11.96 hrs, Volume= 0.798 of Routed to Pond 2P : Infiltration Basin #2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 319.49' @ 11.96 hrs Flood Elev= 324.41' Device Routing Invert Outlet Devices #1 Primary 317.45' 30.0" Round Culvert L= 59.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 317.45' / 317.25' S= 0.0034 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=13.76 cfs @ 11.96 hrs HW=319.46' TW=316.75' (Dynamic Tailwater) L1=Culvert (Barrel Controls 13.76 cfs @ 4.44 fps) Pond 3P: STMH-1 Hydrograph 15 14.09 cfs _Inflow 14: _ Primary 13 ow A pia=Z J-ac 12 t �--peak-�Elev= 4�9'_ 100.V N 9 (Ro ulvert � � 8 3 —n 0 LL 7 6-- 5 4 3 2 0 1. Ll.I.....ppppp� i i i i i i i i 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 37 Summary for Pond 4P: STMH-2 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 3.48" for 10-yr event Inflow = 14.09 cfs @ 11.96 hrs, Volume= 0.798 of Outflow = 14.09 cfs @ 11.96 hrs, Volume= 0.798 af, Atten= 0%, Lag= 0.0 min Primary = 14.09 cfs @ 11.96 hrs, Volume= 0.798 of Routed to Pond 3P : STMH-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 320.35' @ 11.98 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.15' 30.0" Round Culvert L= 272.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.15' / 317.45' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=12.52 cfs @ 11.96 hrs HW=320.28' TW=319.46' (Dynamic Tailwater) L1=Culvert (Outlet Controls 12.52 cfs @ 3.78 fps) Pond 4P: STMH-2 Hydrograph 15 14.09 cfs _Inflow 14 � � /�.�A�� ��+ Primary 13 -1 ow A pia=ZA5-ac 12 t �--peak-�Elev=32�.�5'_ 100.V N 9 8 (Ro ulvert � � 3 � � 0 LL 7 6 l � � 4 � I � 4 I � 4 3 2 0 1. Ll.I.....ppppp� i i i i i i i i i 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 38 Summary for Pond 5P: STMH-3 Inflow Area = 1.844 ac,100.00% Impervious, Inflow Depth = 3.48" for 10-yr event Inflow = 9.43 cfs @ 11.96 hrs, Volume= 0.534 of Outflow = 9.43 cfs @ 11.96 hrs, Volume= 0.534 af, Atten= 0%, Lag= 0.0 min Primary = 9.43 cfs @ 11.96 hrs, Volume= 0.534 of Routed to Pond 4P : STMH-2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 320.79' @ 11.99 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.85' 30.0" Round Culvert L= 271.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.85' / 318.15' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=7.35 cfs @ 11.96 hrs HW=320.70' TW=320.28' (Dynamic Tailwater) L1=Culvert (Outlet Controls 7.35 cfs @ 2.63 fps) Pond 5P: STMH-3 Hydrograph 10 - 9.43 cfs —Inflow IVY —Primary 9 �n�o�w�fiu�rea=4.. 4 ac Lpeak-'Elev-=�2�0. 9' N 6 (Ro ulvert � 5 A4- I -4 � InI- .0�1 2 LL 4 4 --1 -4 +- ICI 27'�0' 2 -1 + I -+ � . 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 11 24-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 39 Summary for Pond 6P: STMH-4 Inflow Area = 0.911 ac,100.00% Impervious, Inflow Depth = 3.48" for 10-yr event Inflow = 4.66 cfs @ 11.96 hrs, Volume= 0.264 of Outflow = 4.66 cfs @ 11.96 hrs, Volume= 0.264 af, Atten= 0%, Lag= 0.0 min Primary = 4.66 cfs @ 11.96 hrs, Volume= 0.264 of Routed to Pond 5P : STMH-3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 321.29' @ 11.99 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 320.00' 24.0" Round Culvert L= 264.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 320.00' / 319.35' S= 0.0025 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 3.14 sf Primary OutFlow Max=3.82 cfs @ 11.96 hrs HW=321.24' TW=320.70' (Dynamic Tailwater) L1=Culvert (Outlet Controls 3.82 cfs @ 2.67 fps) Pond 6P: STMH-4 Hydrograph 5 4.66 cfs WIOW'Ar' eal =10.'9� _InflowPrimary 1 ac � I 1 � I � � 14. � I 4 Peak Elev= 21 . 9' �4'.0„ N 3 (Round lveri� nl=b.b12 LL 2 I � L=26 .0' 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 10-yr Rainfall=3.71" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 40 Summary for Link DP-1: DP-1 Inflow Area = 10.462 ac, 57.85% Impervious, Inflow Depth = 0.09" for 10-yr event Inflow = 1.34 cfs @ 12.02 hrs, Volume= 0.080 of Primary = 1.34 cfs @ 12.02 hrs, Volume= 0.080 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link DP-1: DP-1 Hydrograph 1.34 cfs —Inflow —Primary Inflow Area=10.462 ac 1 w w 3 0 LL 011 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 41 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: SC-101.1 Runoff Area=30,262 sf 55.89% Impervious Runoff Depth=1.85" Flow Length=677' Tc=9.3 min CN=72 Runoff=1.99 cfs 0.107 of Subcatchment 1.2S: SC-101.2 Runoff Area=58,539 sf 4.89% Impervious Runoff Depth=0.20" Flow Length=892' Tc=20.8 min CN=42 Runoff=0.05 cfs 0.023 of Subcatchment2S: SC-102 Runoff Area=67,129 sf 63.46% Impervious Runoff Depth=2.16" Tc=6.0 min CN=76 Runoff=5.74 cfs 0.278 of Subcatchment3S: SC-103 Runoff Area=6,854 sf 0.00% Impervious Runoff Depth=0.12" Tc=6.0 min CN=39 Runoff=0.00 cfs 0.002 of Subcatchment4S: SC-104 Runoff Area=224,463 sf 55.19% Impervious Runoff Depth=1.85" Tc=6.0 min CN=72 Runoff=16.60 cfs 0.794 of Subcatchment5S: SC-105 Runoff Area=39,675 sf 100.00% Impervious Runoff Depth=4.30" Tc=6.0 min CN=98 Runoff=5.72 cfs 0.327 of Subcatchment6S: SC-106 Runoff Area=40,651 sf 100.00% Impervious Runoff Depth=4.30" Tc=6.0 min CN=98 Runoff=5.86 cfs 0.335 of Subcatchment7S: SC-107 Runoff Area=39,673 sf 100.00% Impervious Runoff Depth=4.30" Tc=6.0 min CN=98 Runoff=5.72 cfs 0.327 of Subcatchment8S: SC-108 Runoff Area=22,460 sf 0.00% Impervious Runoff Depth=0.12" Tc=6.0 min CN=39 Runoff=0.01 cfs 0.005 of Pond 1 P: Infiltration Basin#1 Peak Elev=323.12' Storage=3,016 cf Inflow=5.74 cfs 0.279 of Discarded=1.52 cfs 0.280 of Secondary=0.00 cfs 0.000 of Outflow=1.52 cfs 0.280 of Pond 2P: Infiltration Basin#2 Peak EIev=318.00' Storage=22,141 cf Inflow=33.62 cfs 1.787 of Discarded=5.62 cfs 1.789 of Primary=0.00 cfs 0.000 of Outflow=5.62 cfs 1.789 of Pond 3P: STMH-1 Peak EIev=319.78' Inflow=17.29 cfs 0.988 of 30.0" Round Culvert n=0.012 L=59.0' S=0.0034 '/' Outflow=17.29 cfs 0.988 of Pond 4P: STMH-2 Peak EIev=320.70' Inflow=17.29 cfs 0.988 of 30.0" Round Culvert n=0.012 L=272.0' S=0.0026 '/' Outflow=17.29 cfs 0.988 of Pond 5P: STMH-3 Peak EIev=321.10' Inflow=11.58 cfs 0.661 of 30.0" Round Culvert n=0.012 L=271.0' S=0.0026 '/' Outflow=11.58 cfs 0.661 of Pond 6P: STMH-4 Peak EIev=321.51' Inflow=5.72 cfs 0.327 of 24.0" Round Culvert n=0.012 L=264.0' S=0.0025'/' Outflow=5.72 cfs 0.327 of Link DP-1: DP-1 Inflow=1.99 cfs 0.130 of Primary=1.99 cfs 0.130 of 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 42 Summary for Subcatchment 1.1S: SC-101.1 Runoff = 1.99 cfs @ 12.01 hrs, Volume= 0.107 af, Depth= 1.85" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 16,913 98 Paved parking, HSG A 13,349 39 >75% Grass cover, Good, HSG A 30,262 72 Weighted Average 13,349 44.11% Pervious Area 16,913 55.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment MS: SC-101.1 Hydrograph 1.99 cfs —Runoff 2 I -1 T T FIB ivlllae 11 24-hr y �5 rl R il"r fall=4.54�' ku6off Area=30,26� slf N IRuh6ff V61ume=0.107 cif U 1 I Roolff 00pt,h=1 .$57 FIoW Leingth=C771' Tc=9.3 m i q I CNI7� 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 43 Summary for Subcatchment 1.2S: SC-101.2 Runoff = 0.05 cfs @ 12.54 hrs, Volume= 0.023 af, Depth= 0.20" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 2,863 98 Paved parking, HSG A 55,676 39 >75% Grass cover, Good, HSG A 58,539 42 Weighted Average 55,676 95.11% Pervious Area 2,863 4.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 100 0.0290 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 7.7 792 0.0130 1.71 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 20.8 892 Total Subcatchment 1.2S: SC-101.2 Hydrograph 0.055 1 - 0.05 cfs —Runoff 0.05 ype II 2 -hr 0.045 -F I -F F- 15Lyj-Rai�f�ll .5�" 004 I I Rulndff IArleal=a8,539 9f °.035 R n I q Q4 .Q ff V I me 0 2$ c f N 3 0.03 E2-.--.ngff10�p�h=Fo.�Wj' 0 FL0.025 "r n t - ' 0.02 1 1 1 II II IO.$ . 0.015 I -t L I I A LIB -i LIB L 1 1 -L 0.01 I k-- - 4 4- 1 I 1 --4I 4- 1-1 1 1 4 1 0.005 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 44 Summary for Subcatchment 2S: SC-102 Runoff = 5.74 cfs @ 11.97 hrs, Volume= 0.278 af, Depth= 2.16" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 42,597 98 Paved parking, HSG A 24,532 39 >75% Grass cover, Good, HSG A 67,129 76 Weighted Average 24,532 36.54% Pervious Area 42,597 63.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: SC-102 Hydrograph I 6 5.74 cfs — — — — — — — — 1— — —Runoff �y'pe' II124 hlr 5 + 25-Y r Rain�a11=4.54�' l 4 Ru rhoff Ar6a=67,129 slf N Ruh6ff Wlumb=0.278 a'f c 3 j Runoff J)Opth ,2.46 i' Tc=6.0 Tip 2 1 1 I I I I I I I I I I I I I I I I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 11 24-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 45 Summary for Subcatchment 3S: SC-103 Runoff = 0.00 cfs @ 13.36 hrs, Volume= 0.002 af, Depth= 0.12" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 6,854 39 >75% Grass cover, Good, HSG A 6,854 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 3S: SC-103 Hydrograph 0.002 — 0.002 +0.00 cfs {— —Runoff 0.002 - - - - - - - 0.002 pw III fir 0.002 I y Ra fa�ll�4.�s4�'� 0.002 0.002 I Rkanof�Alrela�6,$54�1f 0.002 0.001 n 0 0.001 LL 0.001 1 -4 4 I 1 4- 1 4 I --� 4- 1 c4 MI I 0.001 0.001 I — fil — — fi — — — fi — - I � 0.000 0.000 0.000 0.000 I � 1 � I � I 14 � I � 4- I 14 � I � 0 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 46 Summary for Subcatchment 4S: SC-104 Runoff = 16.60 cfs @ 11.98 hrs, Volume= 0.794 af, Depth= 1.85" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 123,880 98 Unconnected pavement, HSG A 93,021 39 >75% Grass cover, Good, HSG A 7,562 43 Woods/grass comb., Fair, HSG A 224,463 72 Weighted Average 100,583 44.81% Pervious Area 123,880 55.19% Impervious Area 123,880 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: SC-104 Hydrograph 1s — t- 17 16.60 cfs _ �24--hr 16 - 1 15 iyp 14 l l l 1 1 1 IYr1 Fi�14� 113 114�54� 12 -1 - II - II -1 - IIRnfAlre =1�265� y 11 -1 t 1 1 t 1 1 t -ROnc�# V-6I�m ems*". 9*ciU 10 LL 8 6 5 I I I �_ 1 7 3 2 � I T 1- 1 f L-F1—1 -1 1- 7 -T 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 47 Summary for Subcatchment 5S: SC-105 Runoff = 5.72 cfs @ 11.96 hrs, Volume= 0.327 af, Depth= 4.30" Routed to Pond 6P : STMH-4 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 39,675 98 Roofs, HSG A 39,675 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: SC-105 Hydrograph —Runoff 6 5.72 cfs 1 �yl��e1 11124-h1r 5 I— - —I yR+afa�ll4.54�' 4 ku r otf Ar6a�=307$ Slf N I Ruh6ff V61OM&0.327 cif U 3 j Ru nOff-00pth=4.�107 LL 2 1 1 1 1 1 I I I I I I I I I I I I 1 I I I I I I I I I I I I I I I I I I I I I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 11 24-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 48 Summary for Subcatchment 6S: SC-106 Runoff = 5.86 cfs @ 11.96 hrs, Volume= 0.335 af, Depth= 4.30" Routed to Pond 5P : STMH-3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 40,651 98 Roofs, HSG A 40,651 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 6S: SC-106 Hydrograph I 6 5.86 cfs 11 —Runoff �y'pe' ll 24-hlr � �iU'll=4.v4�� kunoff Area=40,651 slf N 4 I I Ruh6ff IV6IUm6=0.335 cif U 0 3 1 L -1 L I F-u n-off-PORt,h=4-ZO7 LL 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 49 Summary for Subcatchment 7S: SC-107 Runoff = 5.72 cfs @ 11.96 hrs, Volume= 0.327 af, Depth= 4.30" Routed to Pond 4P : STMH-2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 39,673 98 Roofs, HSG A 39,673 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: SC-107 Hydrograph —Runoff 6 5.72 cfs 1 �yl��e1 11124-h1r 5 I— - —I yR+afa�ll4.54�' 4 ku r otf Ar6a�=307� Slf N I Ruh6ff V61OM&0.327 cif U 3 j Ru nOff-00pth=4.�107 LL 2 1 1 1 1 1 I I I I I I I I I I I I 1 I I I I I I I I I I I I I I I I I I I I I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 50 Summary for Subcatchment 8S: SC-108 Runoff = 0.01 cfs @ 13.36 hrs, Volume= 0.005 af, Depth= 0.12" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=4.54" Area (sf) CN Description 22,460 39 >75% Grass cover, Good, HSG A 22,460 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 8S: SC-108 Hydrograph 0.007 - 0.01 cfs —Runoff 0.006 11-24- r 0.005 I I�ulndff IArleal=- — sEf 0.005 � w 0.004 I �tfnq f Vg14mje=�0.Q "f 0.004- LL 0 003 n l p 7 '1 1 0.003 I -j f- � I -1 fi l -t � I -j fi 1-7c�6'N TM' 0.002 I; - 0.002 -1L L --ILI -i L -1L1 1 -LL- I -1 0.001 0.001 0.000 - 1 L L --I L 1 -1 L � L -i L 1 -1 0 L. i. j -�— i i - i I0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 51 Summary for Pond 1 P: Infiltration Basin #1 Inflow Area = 1.698 ac, 57.58% Impervious, Inflow Depth = 1.97" for 25-yr event Inflow = 5.74 cfs @ 11.97 hrs, Volume= 0.279 of Outflow = 1.52 cfs @ 12.12 hrs, Volume= 0.280 af, Atten= 74%, Lag= 9.0 min Discarded = 1.52 cfs @ 12.12 hrs, Volume= 0.280 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 323.12' @ 12.12 hrs Surf.Area= 3,276 sf Storage= 3,016 cf Flood Elev= 330.00' Surf.Area= 5,520 sf Storage= 11,261 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 11.6 min ( 846.6 - 834.9 ) Volume Invert Avail.Storage Storage Description #1 322.00' 11,261 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 322.00 2,138 345.2 0 0 2,138 324.00 4,335 386.2 6,345 6,345 4,634 325.00 5,520 405.3 4,916 11,261 5,900 Device Routing Invert Outlet Devices #1 Discarded 322.00' 20.000 in/hr Exfiltration over Horizontal area #2 Secondary 324.50' 15.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Discarded OutFlow Max=1.51 cfs @ 12.12 hrs HW=323.11' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.51 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=322.00' TW=0.00' (Dynamic Tailwater) L2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 52 Pond 1 P: Infiltration Basin #1 Hydrograph 6 5.74 cfs — — — —Inflow _I -Outflow —Discarded of ow Area-1 . 8ac -Secondary 5 1 beak ev 21 4 �toragle=' 3.10�1-64 IIII IIIIIIIII II � III 3 LL IIII IIIIIIIII � IIIII 2 1 1 1 1 11.52 cfs ( IIII II IIIIIIIIIII 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 53 Summary for Pond 2P: Infiltration Basin #2 Inflow Area = 8.423 ac, 66.47% Impervious, Inflow Depth = 2.55" for 25-yr event Inflow = 33.62 cfs @ 11.97 hrs, Volume= 1.787 of Outflow = 5.62 cfs @ 12.19 hrs, Volume= 1.789 af, Atten= 83%, Lag= 13.0 min Discarded = 5.62 cfs @ 12.19 hrs, Volume= 1.789 of Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 318.00' @ 12.19 hrs Surf.Area= 12,133 sf Storage= 22,141 cf Flood Elev= 330.00' Surf.Area= 22,665 sf Storage= 59,805 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 23.0 min ( 813.4 - 790.3 ) Volume Invert Avail.Storage Storage Description #1 316.00' 59,805 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 316.00 10,038 548.2 0 0 10,038 318.00 12,129 581.3 22,134 22,134 13,220 319.00 20,464 680.7 16,116 38,250 23,223 320.00 22,665 715.9 21,555 59,805 27,197 Device Routing Invert Outlet Devices #1 Discarded 316.00' 20.000 in/hr Exfiltration over Horizontal area #2 Primary 316.50' 12.0" Round 12" Culvert L= 68.0' CMP, projecting, no headwall, Ke= 0.900 Inlet/Outlet Invert= 316.50' / 316.00' S= 0.0074 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.79 sf #3 Device 2 319.50' 24.0" x 24.0" Horiz. 24" x 24" Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=5.61 cfs @ 12.19 hrs HW=318.00' (Free Discharge) L1=Exfiltration (Exfiltration Controls 5.61 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=316.00' TW=0.00' (Dynamic Tailwater) L2=12" Culvert ( Controls 0.00 cfs) L3=24" x 24" Grate ( Controls 0.00 cfs) 24-024 DR-PR Type // 24-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 54 Pond 2P: Infiltration Basin #2 Hydrograph 36 L 33.62 cfs —1 LDa ow 32 L I I L L I1 L L L J I L ow ednfOw Area-8. aC 28 1 T T T PeaacI lev11be' 24 fi 1 fi 1 rttcr ateI — C-4 - —Z�1 I�1I w 22 u 20 - 0 18 " 16 I - 14 + 12 I � LI I -t LI I LI -t LI I IIL 10 8 -1 L 1 5.62 cfs L ! E � L 6 4 � I T FI -1 TI 1 T IT 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 55 Summary for Pond 3P: STMH-1 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 4.30" for 25-yr event Inflow = 17.29 cfs @ 11.96 hrs, Volume= 0.988 of Outflow = 17.29 cfs @ 11.96 hrs, Volume= 0.988 af, Atten= 0%, Lag= 0.0 min Primary = 17.29 cfs @ 11.96 hrs, Volume= 0.988 of Routed to Pond 2P : Infiltration Basin #2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 319.78' @ 11.96 hrs Flood Elev= 324.41' Device Routing Invert Outlet Devices #1 Primary 317.45' 30.0" Round Culvert L= 59.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 317.45' / 317.25' S= 0.0034 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=16.89 cfs @ 11.96 hrs HW=319.75' TW=317.16' (Dynamic Tailwater) L1=Culvert (Barrel Controls 16.89 cfs @ 4.68 fps) Pond 3P: STMH-1 Hydrograph 19 18 17.29 cfs _Inflow L Primary 17 16 Oar jTea=ZA5ac 15:- 6.14 '' e -aV, 13 —4 L I A0,1J�� 12 I � �{.l1� a 11 -1 L I + 11V lu-n-�W-V Vas 1 L 10 L L L L L L L L L 0 9 n .�� 7 L L 1 L 11 L L 1 L L L 15�� 4 L L 3-- 2- I1 L I -T F- 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 56 Summary for Pond 4P: STMH-2 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 4.30" for 25-yr event Inflow = 17.29 cfs @ 11.96 hrs, Volume= 0.988 of Outflow = 17.29 cfs @ 11.96 hrs, Volume= 0.988 af, Atten= 0%, Lag= 0.0 min Primary = 17.29 cfs @ 11.96 hrs, Volume= 0.988 of Routed to Pond 3P : STMH-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 320.70' @ 11.98 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.15' 30.0" Round Culvert L= 272.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.15' / 317.45' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=15.20 cfs @ 11.96 hrs HW=320.60' TW=319.75' (Dynamic Tailwater) L1=Culvert (Outlet Controls 15.20 cfs @ 3.93 fps) Pond 4P: STMH-2 Hydrograph 19 18 17.29 cfs L _Inflow — Primary 17 16 l ry - ow /4rea=Z 5-ac 15:- 14 -Pea l�E l 20.jo 13 -44- L1 CIA 4- 12 I � � � a 11 -1 L I + I1Vlu-n-�W-V u1Vas1 L 10 L L L L L L L L L 0 9 LL $ JJ 7 L L 1 L 11 L L 1 L L L L 1 LI Z71 4 -1 T L 3-- 2- I1 L I -T F- 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 57 Summary for Pond 5P: STMH-3 Inflow Area = 1.844 ac,100.00% Impervious, Inflow Depth = 4.30" for 25-yr event Inflow = 11.58 cfs @ 11.96 hrs, Volume= 0.661 of Outflow = 11.58 cfs @ 11.96 hrs, Volume= 0.661 af, Atten= 0%, Lag= 0.0 min Primary = 11.58 cfs @ 11.96 hrs, Volume= 0.661 of Routed to Pond 4P : STMH-2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 321.10' @ 12.00 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.85' 30.0" Round Culvert L= 271.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.85' / 318.15' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=8.48 cfs @ 11.96 hrs HW=320.98' TW=320.60' (Dynamic Tailwater) L1=Culvert (Outlet Controls 8.48 cfs @ 2.56 fps) Pond 5P: STMH-3 Hydrograph 12 11.58 cfs _ l Infow Primary 11 1 n� A�e�=fi.8 4 ac Peak Elev= 21 . 0' 9 I fil Irtr- l -I Tl IIfil I �0'_-0- �, I 8 � I I I I I I I I I I I I I I� I d 6 alwl , e 6 -JLI LI IILI -11I -1LInl .O2 LL L 5 — I 4 _ _ L=27 ■0' 7 7 7 F- T 7 -T 1-6-7 2 'JL 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 11 24-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 58 Summary for Pond 6P: STMH-4 Inflow Area = 0.911 ac,100.00% Impervious, Inflow Depth = 4.30" for 25-yr event Inflow = 5.72 cfs @ 11.96 hrs, Volume= 0.327 of Outflow = 5.72 cfs @ 11.96 hrs, Volume= 0.327 af, Atten= 0%, Lag= 0.0 min Primary = 5.72 cfs @ 11.96 hrs, Volume= 0.327 of Routed to Pond 5P : STMH-3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 321.51' @ 12.00 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 320.00' 24.0" Round Culvert L= 264.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 320.00' / 319.35' S= 0.0025 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 3.14 sf Primary OutFlow Max=4.41 cfs @ 11.96 hrs HW=321.44' TW=320.98' (Dynamic Tailwater) L1=Culvert (Outlet Controls 4.41 cfs @ 2.55 fps) Pond 6P: STMH-4 Hydrograph 6 5.72 cfs —Inflow —Primary Inflow lArea=0.19' 1 lac Peak Elev= 21 . 1 ' 4L��, N IRound, 6ulve' rt l 0 3 n 612 LL 2 L l 2-6 �' I I I I I I �=b.bol2� 'i' 1 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 25-yr Rainfall=4.54" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 59 Summary for Link DP-1: DP-1 Inflow Area = 10.462 ac, 57.85% Impervious, Inflow Depth = 0.15" for 25-yr event Inflow = 1.99 cfs @ 12.01 hrs, Volume= 0.130 of Primary = 1.99 cfs @ 12.01 hrs, Volume= 0.130 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link DP-1: DP-1 Hydrograph 1.99 cfs —Inflow 2 —Primary Inflow Area=10.462 ac N I I I i w 3 LL 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 60 Time span=0.00-48.00 hrs, dt=0.05 hrs, 961 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1.1 S: SC-101.1 Runoff Area=30,262 sf 55.89% Impervious Runoff Depth=3.15" Flow Length=677' Tc=9.3 min CN=72 Runoff=3.41 cfs 0.182 of Subcatchment 1.2S: SC-101.2 Runoff Area=58,539 sf 4.89% Impervious Runoff Depth=0.68" Flow Length=892' Tc=20.8 min CN=42 Runoff=0.54 cfs 0.076 of Subcatchment2S: SC-102 Runoff Area=67,129 sf 63.46% Impervious Runoff Depth=3.54" Tc=6.0 min CN=76 Runoff=9.33 cfs 0.455 of Subcatchment3S: SC-103 Runoff Area=6,854 sf 0.00% Impervious Runoff Depth=0.50" Tc=6.0 min CN=39 Runoff=0.07 cfs 0.007 of Subcatchment4S: SC-104 Runoff Area=224,463 sf 55.19% Impervious Runoff Depth=3.15" Tc=6.0 min CN=72 Runoff=27.92 cfs 1.352 of Subcatchment5S: SC-105 Runoff Area=39,675 sf 100.00% Impervious Runoff Depth=5.95" Tc=6.0 min CN=98 Runoff=7.82 cfs 0.452 of Subcatchment6S: SC-106 Runoff Area=40,651 sf 100.00% Impervious Runoff Depth=5.95" Tc=6.0 min CN=98 Runoff=8.01 cfs 0.463 of Subcatchment7S: SC-107 Runoff Area=39,673 sf 100.00% Impervious Runoff Depth=5.95" Tc=6.0 min CN=98 Runoff=7.82 cfs 0.452 of Subcatchment8S: SC-108 Runoff Area=22,460 sf 0.00% Impervious Runoff Depth=0.50" Tc=6.0 min CN=39 Runoff=0.22 cfs 0.022 of Pond 1 P: Infiltration Basin#1 Peak Elev=323.92' Storage=6,016 cf Inflow=9.37 cfs 0.462 of Discarded=1.96 cfs 0.463 of Secondary=0.00 cfs 0.000 of Outflow=1.96 cfs 0.463 of Pond 2P: Infiltration Basin#2 Peak Elev=318.97' Storage=37,559 cf Inflow=51.62 cfs 2.740 of Discarded=9.33 cfs 2.743 of Primary=0.00 cfs 0.000 of Outflow=9.33 cfs 2.743 of Pond 3P: STMH-1 Peak EIev=320.39' Inflow=23.65 cfs 1.366 of 30.0" Round Culvert n=0.012 L=59.0' S=0.0034 '/' Outflow=23.65 cfs 1.366 of Pond 4P: STMH-2 Peak EIev=321.80' Inflow=23.65 cfs 1.366 of 30.0" Round Culvert n=0.012 L=272.0' S=0.0026 '/' Outflow=23.65 cfs 1.366 of Pond 5P: STMH-3 Peak EIev=322.16' Inflow=15.83 cfs 0.915 of 30.0" Round Culvert n=0.012 L=271.0' S=0.0026 '/' Outflow=15.83 cfs 0.915 of Pond 6P: STMH-4 Peak EIev=322.28' Inflow=7.82 cfs 0.452 of 24.0" Round Culvert n=0.012 L=264.0' S=0.0025'/' Outflow=7.82 cfs 0.452 of Link DP-1: DP-1 Inflow=3.54 cfs 0.259 of Primary=3.54 cfs 0.259 of 24-024 DR-PR Type/1 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 61 Summary for Subcatchment 1.1S: SC-101.1 Runoff = 3.41 cfs @ 12.01 hrs, Volume= 0.182 af, Depth= 3.15" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 16,913 98 Paved parking, HSG A 13,349 39 >75% Grass cover, Good, HSG A 30,262 72 Weighted Average 13,349 44.11% Pervious Area 16,913 55.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0200 1.03 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.80" 2.6 19 0.0600 0.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 6.2 625 0.0125 1.68 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 9.3 677 Total Subcatchment MS: SC-101.1 Hydrograph 3.41 cfs —Runoff �Z' e' 11124-h1r 3fi I- �1�0 Syr Raall=6.4' l l l l ku6off Area=30,26� slf N IRuh6ff V61UM6=0.182 cif 2 1 1 1 1 1 1 Roolff Popfh=3.1157 FIoW Leingth=C771' 9N=7? II � I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 62 Summary for Subcatchment 1.2S: SC-101.2 Runoff = 0.54 cfs @ 12.21 hrs, Volume= 0.076 af, Depth= 0.68" Routed to Link DP-1 : DP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 2,863 98 Paved parking, HSG A 55,676 39 >75% Grass cover, Good, HSG A 58,539 42 Weighted Average 55,676 95.11% Pervious Area 2,863 4.89% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 100 0.0290 0.13 Sheet Flow, Grass: Dense n= 0.240 P2= 2.80" 7.7 792 0.0130 1.71 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 20.8 892 Total Subcatchment 1.2S: SC-101.2 Hydrograph 0.6 0.54 cfs —Runoff °0 5 I I I 112 �Ir 0.45 60 r R11 �_r�falk.4'- 0.4 -1 L 1 I L 1 1 1 1 1 -1 Ru riotf-Ar":��A30--4 0.35 -4 4- 1 I -RUh6f-Vb1UMb-0.07"f 0 0 03 fi l t- 1 - 1 I I fiR"off PIpth=0.M U. 0.25 -IJC�y 0.2 0.15 0.05 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type/1 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 63 Summary for Subcatchment 2S: SC-102 Runoff = 9.33 cfs @ 11.97 hrs, Volume= 0.455 af, Depth= 3.54" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 42,597 98 Paved parking, HSG A 24,532 39 >75% Grass cover, Good, HSG A 67,129 76 Weighted Average 24,532 36.54% Pervious Area 42,597 63.46% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 2S: SC-102 Hydrograph 9.33 cfs ��11 —Runoff 9 1 1Type II'2 hlr 8 1 -k 1 t- 1 4 1 4160�yrl IZain'-falr6�19�— -k -k- 1 4 Au hoWAr�a:L-67;9 2�r sly w 6 --1 + -k- 1 4 —R n6 f IV�bltimb-4-.455 ciu 0 5 I I 4-- I 1 4 I 14 RUOOff-POPth73547 U. 3 I I �N-77� 2 t 11 -tt 1 - 11t 1 -1tI fil LL 1 -tt- 1 1 - 1 It 1 -1t 0 - 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 64 Summary for Subcatchment 3S: SC-103 Runoff = 0.07 cfs @ 12.02 hrs, Volume= 0.007 af, Depth= 0.50" Routed to Pond 1 P : Infiltration Basin #1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 6,854 39 >75% Grass cover, Good, HSG A 6,854 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 3S: SC-103 Hydrograph 0.075 0.07 0.07 cfs —Runoff 0.065 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Lj I 1 0.06 L L L �1 � �R i�f 11�,11Lr 0.055 b0 y a a� 6 9 0.05 - LpR6hoff-Alrela*6,854�kf 0.045 L �`1-- qff V--04-mIe�O."7--qf c 0.035 L L LPlhZ.�S�0" U. 0.03 C=6.0 m i 0.025-:— — - — — — — — — — — 6N�� - 0.02 L L LL L L LL L I I L LL 0.01 0.005 L L 1 L L L L I L L 1 L 0 L i-11+111i....i-11+11+111i....i 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 65 Summary for Subcatchment 4S: SC-104 Runoff = 27.92 cfs @ 11.97 hrs, Volume= 1.352 af, Depth= 3.15" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 123,880 98 Unconnected pavement, HSG A 93,021 39 >75% Grass cover, Good, HSG A 7,562 43 Woods/grass comb., Fair, HSG A 224,463 72 Weighted Average 100,583 44.81% Pervious Area 123,880 55.19% Impervious Area 123,880 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 4S: SC-104 Hydrograph 30 27..92 cfs —Runoff 28 I7 T rt 1 1 -T FI r1 � 26 - - ype W24hr- 24 1 �1 bo!yrl I � �Ilr�sr9 20 T 1 T22 1 R�n eft'81r"=22�d 9— y 18 I—Ralncif#IV61tim6--11�5Z cd- w 316 1 RU0—Off-O0P-A"3--T5� —°° 14 12 1 4 1 4 1 + Tr-76--9 0 9- 10 I I I I I I I I I I I I I I I I I I �NT7 8 � 6 1 fi l 1 H + F t l 4 2 I L 1 L 1 -i 1 L 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 66 Summary for Subcatchment 5S: SC-105 Runoff = 7.82 cfs @ 11.96 hrs, Volume= 0.452 af, Depth= 5.95" Routed to Pond 6P : STMH-4 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 39,675 98 Roofs, HSG A 39,675 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 5S: SC-105 Hydrograph I 8 7.82 cfs 11 —Runoff yl el 11124-h1r T T I T T T r� l �- 1�0-yr Rai fall-6.1T9 6 —1 —I T kunoff Area 1 39,67t Slf- N 5 T T 1 T T T —Rdn6ff IV6Wme=0.452-6f U 0 4 T T T I T T F-unOffQORt,h=5.951' LL I I 1 1 1 1 1 1 1 1 1 1 TC76.p In i q 3 �N-9 1 1 1 1 1 1 1 1 1 1 1 1 1 Ir � 2 I I I I I I I I I I I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type/1 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 67 Summary for Subcatchment 6S: SC-106 Runoff = 8.01 cfs @ 11.96 hrs, Volume= 0.463 af, Depth= 5.95" Routed to Pond 5P : STMH-3 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 40,651 98 Roofs, HSG A 40,651 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 6S: SC-106 Hydrograph I 8.01 cfs —Runoff 8 I -1 T I fi T r- I y�eII 24hIr I— - - —I �160 r R�airifal11-: . 9�' y 6 1 --1 + 1 F uno"rea=40;65f-SIf- N 5 L L A L -Ru1n6ff IV6IUn6=0.463-zU U 1 1 1 1 1 1 Runoff pelpt,h=5.951' LL 4 3 NF T 2 — — 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 68 Summary for Subcatchment 7S: SC-107 Runoff = 7.82 cfs @ 11.96 hrs, Volume= 0.452 af, Depth= 5.95" Routed to Pond 4P : STMH-2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 39,673 98 Roofs, HSG A 39,673 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 7S: SC-107 Hydrograph I 8 7.82 cfs 11 —Runoff yl el 11124-h1r T T I T T T r� l �- 1�0-yr Rai fall-6.1T9 6 I— —I T kunoff Area 1 39,67�-Slf- N 5 T T T T T —Rdn6ff IV6Wme=0.452-6f U 0 4 T T 1 T I T T F-unOffQORt,h=5.951' LL I I 1 1 1 1 1 1 1 1 1 1 TC76.p In i q 3 �N-9 1 1 1 1 1 1 1 1 1 1 1 1 1 Ir � 2 I I I I I I I I I I I 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 69 Summary for Subcatchment 8S: SC-108 Runoff = 0.22 cfs @ 12.02 hrs, Volume= 0.022 af, Depth= 0.50" Routed to Pond 2P : Infiltration Basin #2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=6.19" Area (sf) CN Description 22,460 39 >75% Grass cover, Good, HSG A 22,460 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 8S: SC-108 Hydrograph 0.25 0.23 0.22 cfs —Runoff 0.22 +- 1 1 1 + I I -f +- I I - � + 0.21 I F2 — r 0 1 1 1 1 0.18 0--�r�R rif�'II .�Y9�' 0.17 t - I I -J �r otf Ar":�2� ,466 s� 0.16 0.15 0.14 E 1 I I -Ru�df�11 �Ufii� .W"f 0 w .12 -4 4- 1 I 1 -4 �--R-�� QOpf��-"1' EL0.11 0.09 0.08 0.06 0.05 : 1 � CIS 1 1 1 0.04 0.03 I � I � 0.02 0.01 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 70 Summary for Pond 1 P: Infiltration Basin #1 Inflow Area = 1.698 ac, 57.58% Impervious, Inflow Depth = 3.26" for 100-yr event Inflow = 9.37 cfs @ 11.97 hrs, Volume= 0.462 of Outflow = 1.96 cfs @ 12.15 hrs, Volume= 0.463 af, Atten= 79%, Lag= 11.0 min Discarded = 1.96 cfs @ 12.15 hrs, Volume= 0.463 of Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 323.92' @ 12.15 hrs Surf.Area= 4,237 sf Storage= 6,016 cf Flood Elev= 330.00' Surf.Area= 5,520 sf Storage= 11,261 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 21.1 min ( 842.6 - 821.5 ) Volume Invert Avail.Storage Storage Description #1 322.00' 11,261 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 322.00 2,138 345.2 0 0 2,138 324.00 4,335 386.2 6,345 6,345 4,634 325.00 5,520 405.3 4,916 11,261 5,900 Device Routing Invert Outlet Devices #1 Discarded 322.00' 20.000 in/hr Exfiltration over Horizontal area #2 Secondary 324.50' 15.0' long x 5.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Discarded OutFlow Max=1.96 cfs @ 12.15 hrs HW=323.92' (Free Discharge) L1=Exfiltration (Exfiltration Controls 1.96 cfs) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=322.00' TW=0.00' (Dynamic Tailwater) L2=Broad-Crested Rectangular Weir( Controls 0.00 cfs) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 71 Pond 1 P: Infiltration Basin #1 Hydrograph 10 9.37 cfs L —Inflow I— L- I J —outflow 9 —Discarded of ow Area=II a a �ie� a-� 6 -Secondary1' 7 4-- 1 1 -4 1 1�U�rage 6-k-. — cf 6-- 5- I- u LL 4 1I4 3 1.96 cfs 0.00 cfs 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 72 Summary for Pond 2P: Infiltration Basin #2 Inflow Area = 8.423 ac, 66.47% Impervious, Inflow Depth = 3.90" for 100-yr event Inflow = 51.62 cfs @ 11.97 hrs, Volume= 2.740 of Outflow = 9.33 cfs @ 12.17 hrs, Volume= 2.743 af, Atten= 82%, Lag= 12.1 min Discarded = 9.33 cfs @ 12.17 hrs, Volume= 2.743 of Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of Routed to Link DP-1 : DP-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 318.97' @ 12.17 hrs Surf.Area= 20,145 sf Storage= 37,559 cf Flood Elev= 330.00' Surf.Area= 22,665 sf Storage= 59,805 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 32.3 min ( 818.2 - 785.8 ) Volume Invert Avail.Storage Storage Description #1 316.00' 59,805 cf Custom Stage Data (Irregular)Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 316.00 10,038 548.2 0 0 10,038 318.00 12,129 581.3 22,134 22,134 13,220 319.00 20,464 680.7 16,116 38,250 23,223 320.00 22,665 715.9 21,555 59,805 27,197 Device Routing Invert Outlet Devices #1 Discarded 316.00' 20.000 in/hr Exfiltration over Horizontal area #2 Primary 316.50' 12.0" Round 12" Culvert L= 68.0' CMP, projecting, no headwall, Ke= 0.900 Inlet/Outlet Invert= 316.50' / 316.00' S= 0.0074 '/' Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 0.79 sf #3 Device 2 319.50' 24.0" x 24.0" Horiz. 24" x 24" Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=9.31 cfs @ 12.17 hrs HW=318.96' (Free Discharge) L1=Exfiltration (Exfiltration Controls 9.31 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=316.00' TW=0.00' (Dynamic Tailwater) L2=12" Culvert ( Controls 0.00 cfs) L3=24" x 24" Grate ( Controls 0.00 cfs) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 73 Pond 2P: Infiltration Basin #2 Hydrograph 55 51.62 cfs —Inflow —Outflow 50 + —Discarded of ow Area=8.4 3 1 a -Primary 45 + t- peak pleV�18.� ' 35 fi + Stor age=3 -Tjq- 30 — IIIII IIIII IIII LL 25 — 20 9.33 cfs I I � 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 74 Summary for Pond 3P: STMH-1 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 5.95" for 100-yr event Inflow = 23.65 cfs @ 11.96 hrs, Volume= 1.366 of Outflow = 23.65 cfs @ 11.96 hrs, Volume= 1.366 af, Atten= 0%, Lag= 0.0 min Primary = 23.65 cfs @ 11.96 hrs, Volume= 1.366 of Routed to Pond 2P : Infiltration Basin #2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 320.39' @ 11.96 hrs Flood Elev= 324.41' Device Routing Invert Outlet Devices #1 Primary 317.45' 30.0" Round Culvert L= 59.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 317.45' / 317.25' S= 0.0034 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=23.11 cfs @ 11.96 hrs HW=320.33' TW=318.02' (Dynamic Tailwater) L1=Culvert (Barrel Controls 23.11 cfs @ 5.12 fps) Pond 3P: STMH-1 Hydrograph 26 25 23.65 cfs '.,, — _Inflow III 22 — __ Ow /r"11 ea 2-7 5-aC— Primary 21 20 18 - - - - - - - - - _16 o��, 14 - I � � I I � I I � � I � � I IF�ou�ac��ver� I _012 I -1fil - fil IZ LL 10 - ICI -L mo o' - - I- A - - - - - =lb �, 5 - III - - - - - - � I - � 4 2 I 4- - I - - - - I - - - 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 75 Summary for Pond 4P: STMH-2 Inflow Area = 2.755 ac,100.00% Impervious, Inflow Depth = 5.95" for 100-yr event Inflow = 23.65 cfs @ 11.96 hrs, Volume= 1.366 of Outflow = 23.65 cfs @ 11.96 hrs, Volume= 1.366 af, Atten= 0%, Lag= 0.0 min Primary = 23.65 cfs @ 11.96 hrs, Volume= 1.366 of Routed to Pond 3P : STMH-1 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 321.80' @ 11.98 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.15' 30.0" Round Culvert L= 272.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.15' / 317.45' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=20.72 cfs @ 11.96 hrs HW=321.57' TW=320.33' (Dynamic Tailwater) L1=Culvert (Inlet Controls 20.72 cfs @ 4.22 fps) Pond 4P: STMH-2 Hydrograph 26 25 23.65 cfs '.,, — _Inflow III 22 - T o /�"11 ea 2-7 5-aC- Primary 21 — �k V k 20 18 I 17 - - - - - - - -4 - I_16 I 14 - I � � I I � I I � � I � � I IF�ou�ac��ver� I _0 12 fi l fi l IZ LL 10 I ICI o' 6 5 I � I I I � I I + � I -1 + I I - � I I � 4 2 I � 4- 1- � I I � I � 4- I � � I I � 1 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 76 Summary for Pond 5P: STMH-3 Inflow Area = 1.844 ac,100.00% Impervious, Inflow Depth = 5.95" for 100-yr event Inflow = 15.83 cfs @ 11.96 hrs, Volume= 0.915 of Outflow = 15.83 cfs @ 11.96 hrs, Volume= 0.915 af, Atten= 0%, Lag= 0.0 min Primary = 15.83 cfs @ 11.96 hrs, Volume= 0.915 of Routed to Pond 4P : STMH-2 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 322.16' @ 12.02 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 318.85' 30.0" Round Culvert L= 271.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 318.85' / 318.15' S= 0.0026 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 4.91 sf Primary OutFlow Max=4.93 cfs @ 11.96 hrs HW=321.64' TW=321.57' (Dynamic Tailwater) L1=Culvert (Inlet Controls 4.93 cfs @ 1.00 fps) Pond 5P: STMH-3 Hydrograph 17 15.83 cfs T _Inflow 15 — �n�ow Area I 1 4 �r Primary 11 'w 10 F�ou-�nd-6u�v�eni—� 0 8 LL � fil fil Irtr- I -1fil I -tfil�27�o� 6 5 - - - - - - - =0- 0--2 3 ! I I -1 --� 2 Illlllilllllllll 1 - 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type // 24-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCADO 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 77 Summary for Pond 6P: STMH-4 Inflow Area = 0.911 ac,100.00% Impervious, Inflow Depth = 5.95" for 100-yr event Inflow = 7.82 cfs @ 11.96 hrs, Volume= 0.452 of Outflow = 7.82 cfs @ 11.96 hrs, Volume= 0.452 af, Atten= 0%, Lag= 0.0 min Primary = 7.82 cfs @ 11.96 hrs, Volume= 0.452 of Routed to Pond 5P : STMH-3 Routing by Dyn-Stor-Ind method, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Peak Elev= 322.28' @ 12.05 hrs Flood Elev= 324.26' Device Routing Invert Outlet Devices #1 Primary 320.00' 24.0" Round Culvert L= 264.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/ Outlet Invert= 320.00' / 319.35' S= 0.0025 T Cc= 0.900 n= 0.012 Corrugated PP, smooth interior, Flow Area= 3.14 sf Primary OutFlow Max=4.20 cfs @ 11.96 hrs HW=321.85' TW=321.64' (Dynamic Tailwater) L1=Culvert (Outlet Controls 4.20 cfs @ 1.81 fps) Pond 6P: STMH-4 Hydrograph 7.82 cfs Inflow 8 —Primary WIOW'Ar' eal =10.'9' 1 ac T T TPeak�Elev=32T .18' �Z4.0 N 5 (Round �ulveri� LL 4 -1 L I LI 1 1 1 I -J L -L LInl_�.d 42 2I 3 2-- 0 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) 24-024 DR-PR Type 1124-hr 100-yr Rainfall=6.19" Prepared by Verity Engineering, DPC Printed 2/20/2025 HydroCAD® 10.20-6a s/n 09886 ©2024 HydroCAD Software Solutions LLC Page 78 Summary for Link DP-1: DP-1 Inflow Area = 10.462 ac, 57.85% Impervious, Inflow Depth = 0.30" for 100-yr event Inflow = 3.54 cfs @ 12.02 hrs, Volume= 0.259 of Primary = 3.54 cfs @ 12.02 hrs, Volume= 0.259 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-48.00 hrs, dt= 0.05 hrs Link DP-1: DP-1 Hydrograph 3.54 cfs —Inflow —Primary Inflow Area=10.462 ac 3 L w w 3 2 0 LL 1 011 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 Time (hours) Appendix K Weekly Inspection Form Stormwater Pollution Prevention Plan(SWPPP) K 20 Skyward Drive February 2025 Verity Engineering, D.P.C. P.O.Box 474 Verity Troy,New York 12180 518.389.7200 1 verityeng.com SWEEP INSPECTION REPORT SITE INFORMATION Report Submitted: DATE&TIME: PROJECT: LOCATION: CONTRACTOR: JOB NO.: OWNER: WEATHER: Cloudy SOIL: wet CONSTRUCTION OBSERVATIONS: DISTRIBUTION: ❑ Owner Date• ❑ Contractor Date: ❑ Municipality Date: ❑ Site Supt. Date: Site Inspector/ Qualified Professional: sign print Site Inspector: sign print Page 1 of 7 SITE MAP: Page 2 of 7 SITE OBSERVATION REPORT Date: Initials: Project: Y/N Maintaining Water Quality n/a Is there an increase in turbidity causing a substantial visible contrast to natural conditions? n/a Is there residue from oil and floating substances,visible oil film,or globules or grease? n/a All disturbances are within the limits of the approved plans. n/a Have receiving lake/bay,stream,and/or wetland been impacted by silt from theproject? Y/N General Site Conditions n/a Is construction site litter and debris appropriately managed? n/a Are facilities and equipment necessary for implementation of erosion and sediment control in working order? n/a Is construction impacting the adjacent property? n/a I Is dust adequately controlled? Y/N Temporary Stream Crossing n/a Maximum diameter pipes necessary to span creek without dredging are installed? n/a Installed non-woven geotextile fabric beneath approaches. n/a Is fill composed of aggregate(no earth or soil)? n/a Rock on approaches is clean enough to remove mud from vehicles&prevent sediment from entering stream during high flow. Y/N Excavation Dewatering n/a Upstream and downstream berms(sandbags,inflatable dams,etc.)are installed per plan. n/a Clean water from upstream pool is being pumped to the downstream pool. n/a Sediment laden water from work area is being discharged to a silt-trapping device. n/a Constructed upstream berm with one-foot minimum freeboard. Y/N Level Spreader n/a Installed per plan. n/a Constructed on undisturbed soil,not on fill,receiving only clear,non-sediment laden flow. n/a Flow sheets out of levels reader without erosion on downstream edge. Y/N Interceptor Dikes and Swales n/a Installed per plan with minimum side slopes 2H:1V or flatter. n/a Stabilized by geotextile fabric,seed,or mulch with no erosion occurring. n/a Sediment-laden runoff directed to sediment trapping structure. Y/N Stone Check Dam n/a Is channel stable?(flow is not eroding soil underneath or around the structure) n/a Are check dams installed? n/a Check is in good condition(rocks in place and no permanent pools behind the structure). n/a Has accumulated sediment been removed? Y/N Rock Outlet Protection n/a Installed per plan. n/a Installed concurrently with pipe installation. Page 3 of 7 SITE OBSERVATION REPORT Date: Initials: Project: Y/N Topsoil and Spoil Stockpiles n/a Stockpiles are stabilized with vegetation and/or mulch. n/a Sediment control is installed at the toe of slope. Y/N Re-vegetation n/a Temporary seeding and mulch have been applied to idle areas. n/a 4-inches minimum of topsoil has been applied under permanent seeding. Y/N Stabilized Construction Entrance n/a Is there a construction entrance? n/a Installed per standards andspecifications? n/a Stone is clean enough to effectively remove mud from vehicles. n/a Does all traffic use the stabilized entrance to enter and leave the site? n/a Is adequate drainage provided to prevent ponding at entrance? Y/N Silt Fence n/a Installed on contour,io feet from toe of slope(not across conveyance channels). n/a Joints constructed by wrapping the two ends together for continuous support. n/a Fabric is buried 6-inches minimum. n/a Posts are stable,fabric is tight and without rips or frayed areas. n/a Is silt fence installed in all areas required? Estimated Sediment accumulation is %of design capacity. Y/N Storm Drain Inlet Protection n/a Is storm drain inlet protection provided where applicable? Installed per specifications and details?(see below) n/a Excavated-(1'—a'depth,weep holes,gravel filter,min.size: gooft3/acre) n/a Fabric-(Posts are stable,fabric is tight,i'embedment) n/a Stone and Block-(1'—a'height,blocks oriented for dewaterin ,stone) n/a Curb-(wire mesh,fabric,and stone) Estimated Sediment accumulation is_%of design capacity. Y/N Temporary Sediment Trap n/a Outlet structure is constructed per the approved plan or drawing. n/a Geotextile fabric has been placed beneath rock fill. Estimated Sediment accumulation is %of design capacity. Y/N Temporary Sediment Basin n/a Basin and outlet structure constructed per the approved plan. n/a Basin side slopes are stabilized with seed/mulch. n/a Drainage structure flushed and basin surface restored upon removal of sediment basin facility. Estimated Sediment accumulation is %of design capacity. Page 4 of 7 SITE OBSERVATION REPORT Date: Initials: Project: Discharge Point Summary: Surface Water Body Condition: Post-Construction SMPs: Current Corrective Actions: Previous Corrective Actions: General Comments: Page 5 of 7 PHOTO LOG Date: Initials: Project: PHOTO#1: PHOTO#z Page 6 of 7 PHOTO LOG Date: Initials: Project: PHOTO#3: PHOTO#a: Page 7 of 7 Appendix L Post-Construction Operation and Maintenance Checklist Stormwater Pollution Prevention Plan(SWPPP) L 20 Skyward Drive February 2025 Stormwater Maintenance Inspection Checklist Infiltration Basin (I-2) Project: Location: Site Status: Date: Time: Inspector: Satisfactory/ Maintenance Item Unsatisfactory Comments Infiltration Basin # 1) Embankment and emergency spillway (Biannual, After Major Storms): i) Vegetation and ground cover adequate ii) Embankment erosion iii) Unauthorized planting iv) Cracking, bulging, or sliding of fill/banks (a) Upstream face (b) Downstream face (c) At or beyond toe 1. Downstream 2. Upstream (d) Emergency spillway v) Seeps/leaks on downstream face vi) Slope protection or riprap failure vii) Spillway clear of obstructions and debris viii)Other (specify) 2) Pretreatment Area, if applicable (Biannual): i) Depth of Sediment ii) Accumulated debris iii) Side slope erosion iv) Inlet swale erosion v) Condition of grass outlet Satisfactory/ Maintenance Item Unsatisfactory Comments 3) Basin (Monthly,After Major Storms): i) Accumulated debris ii) Erosion, rills, etc. iii) Growth in basin floor iv) Condition of grass 4) Outlet Control Structure (Biannual): i) Inlet protection device ii) Low flow orifice iii) Excessive sediment accumulation iv) Concrete/masonry condition of structure (a) Cracks or displacement (b) Minor spalling (<1") (c) Major spalling (rebars exposed) (d) Joint failures (e) Water tightness v) Outlet pipe condition vi) Underdrain valve functioning 5) Other(As Required): i) Complaints from residents ii) Aesthetics iii) Lawn restoration required iv) Odor v) Any public hazards (specify) vi) Other(specify) Comments: Actions to Take: Stormwater Maintenance Inspection Checklist Closed Drainage System Project: Location: Site Status: Date: Time: Inspector: Satisfactory/ Maintenance Item Unsatisfactory Comments Drainage Structures # Inlet & Outlet Pipes Material Type: HDPE PVC CMP 1. Drainage Structures Condition (Annual) a) Ground surface conditions around structure b) Frame & Grate condition c) Grade rings/bricks condition d) Spalling mortar/infiltration e) Steps condition f) Cracks or displacement g) Minor spalling (<1") h) Major spalling (reinforcement exposed) i) Joint failures j) Water tightness k) Other 2. Sediment Accumulation (Spring & Fall) 3. Pipes obstructed (Annual, As Required) a) Debris removal necessary b) Other Satisfactory/ Maintenance Item Unsatisfactory Comments 4. Outlet/inlet pipe conditions (Annual) 5. Other (As Required) a) Complaints from residents b) Aesthetics c) Lawn restoration required d) Odor e) Any public hazards (specify) f) Other (specify) Comments: Actions to Take: e C SIDE A INFILTRATION INFILTRATION D e GENERAL MAINTENANCE s E: _ PLAN 4 ProjectStormwater Coalition of Albany County Funding fbr This . . d by the / , H New York State Department of Environmental Conservation / / 1 Environmental Protection Fund Prepared By: HAmANDSAwlin May 2010 PURPOSE AND FUNCTION An infiltration practice that stores the water quality volume in a shallow depression,before it is infiltrated into the ground.SHORT-TERM MEASURES(FREQUENCY.AT LEAST ONCE A MONTH) CLEANOM MAJOR AREAS OF PRACTICE Drainage Issues: A. Maintenance Accessway E. Grass Channel I. Outfall 1. Maintain contributing drainage area. Remove trash and debris and dispose off site,as required. B. Inlet Structure F. Infiltration Basin Area J. Emergency Spillway -Stabilize and mow area as required. Remove clippings. C. Stilling Basin G. Underdrain Ensure that activities in the drainage area minimize aillgrease and sediment entry to the system. D. Concrete Level Spreader H. outlet Structure 2. Inspect the Inlet structure(Location B}and pretreatrnent devices,such as stilling basin (Location C},concrete level spreader(Location D},and grass channel(Location Q. Landscaping: Remove debris manually and dispose off-site,as required. 7. Inspect overall condition of vegetation posits. Note any channels,soil exposure,or other evidence of erosion and stabilize far further maintenance. Remove vegetative invasives manually,ensuring root removal,tD the extent possible.Refer to Appendix 1: Note any cracks in pipe,headwal Voncrete pipe collar,and concrete level spreader. New York State Invasive Plants for key species. Note any significant establishment for future -Note any displaced field stone.Remove as required. remove Ilmaintenance. 3. Inspect the outlet structure(riser bur at Location H)and outfall(Location 1). Relocate rodents and/or provide exclusion devices,as required. a.Riser Box Trim shrubs and cut grass along street fronts g g ges,as required. Dispose of clippings off-site. Remove debris manually and dispose off-site,as required. Mow grassed areas as required. Mow only when surface is dry to avoid rutting. Dispose of clippings Note anycracks(damage to riser/barrel(see critical maintenance issues box). off-site. b.putfal I Perimeter Treatment(perimeter boundaries not shown an figures): Remove accumulated debrislfloatables near the outfal I all Tway approach and discharge channels 8. Inspect overall condition of the perimeter treatment Items. manually or by other approved means;as required.Dispose of debris off-site. -Note any displaced fieldstone.Remove as required. -Remove accumulated Iitter/debris by hand,dispose off-site. 4. Inspect Inflltratfon basin(Location F). Secure gates,guidereils,signs,and boulders,as required. -Remove debris manually and dispose off-site,as required. 0 MEDIUM-TERM MEASURES(FREQUENCY:ONCE EVERY SIX MONTHS) Note dewatering time. Facility should drain completely within 24 48 hours of a storm event.If clogging occurs,remove sediment and cleanout underdrain(refer to Item 2 of Long-Term Measures). Drainage Issues: 5. Inspect the emergency spillway(Location J). 1. Inspect the inlet structure(Location B),and pretreatment Critical Maintenance Issues $ Vegetated emergency spillway channels should be mowed and should not be cut to less than 6 to 8 devices,such as stilling basin(Location C),concrete level 1)Risers and barrels Inches in height. spreader(Location D),and grass channel(Location E). -The emergency spillway approach and discharge channels should be cleared of brush and other woody Repairfreinforce eroded areas,as required. -Presence of Corrosion growth. Repair cracks/damaged stones on headwal I,as required. -Weld joint weakness After any flow has passed through the emergency spillway,the spillway crest(control section)and exit Repair cracks in pipe,concrete pipe collar,or concrete -Valves operational channel should be inspected for erosion.Note location of any eroded areas.Stabilize for further level spreader,as required. -Security key in known location maintenance. Replace displaced field stone,as required. -Clogging of barrel outlets $ 6. Inspect adjacent catch basin grates and manhole covers. v -Remove accumulated debris;dispose off site. 2)Embankments No rodents $ No trees and shrubs No seepage and settlement Village of Tawn of Village af Town Di Green Island Guildedand Menands Hew Scotland *Facility abbreviations refer to 2003 NYSDEC Stormwater Design Manual practice labels SIDE B 2. Inspect the outlet structure(Location H). -Repair cracks/damage to concrete riser box,as required. -Replace displaced field stone in outfall,as required. PROFILE 3. Inspect the emergency spillway(Location J). -Repair and stabilize eroded areas in the exit channel as required. 4. Inspect for unstable embankments. �� f d �_jABAN1U1 ENT -Repair/reinforce unstable embankments using field stone,plantings,etc. E F H.� s Landscaping: ii . T ITI 5. Inspect for plant mortality. B, 9u1= Illy III cLE1=Ur: t VALVE -Remove dead plants by hand;dispose off-site; replant as required. „ r '� -Remove trees that start to row in the vicinity of the basin(Location F) and dispose PERMEABLE SOIL g ty � pose off-site,as required. ;f•'b.\f'' R` `ar`,r ,::�;1 -Note any bare areas. Cultivate soil and revegetate as required. Introduce alternative plantings,as required. a...... ..................... FreEL—F = tilil FILTER FABRIC -II - J_; I .,I I In In: �:n II.:..I II ��q� 6. Inspect for significant establishment of imrasives and develop an area-wide plan for removal. �"' 7. Inspect for herbivore damage. GRAVEL j" ar-lfi 'I r WFET�-EEE P COLLhR br� -Repair burrows/damage created by rodents,as required. I-TERUMPHRAGII -Introduce alternative plantings,as required. MAJOR AREAS OF PRACTICE Perimeter Treatment(perimeter boundaries not shown on figures): H. Outlet Structure 8. Lubricate locks and hinges on gates,as required. C. Inlet Structure E. Grass Channel C. Stilling Basin F. Infiltration Basin Area I. Outfall 9. Refurbish or mow accessway,as required. 10.Inspect and repair damaged sidewalks,fencing,guiderail,and signs,as required. D. Concrete Level Spreader G. Underdrain r r "VACTORINW'PROCEDURE AT PRETREATMENT DEVICE Drainage Issues: Methodology: 1. Remove sediment from stilling basin and adjacent catch basins;"vactoring"recommended. 1. Connect the'tractor"truck to an approved nearby source of clean water for"vactoring"purposes. 2. Inspect infiltration basin area(Location F)and underdrain(Location G). 2. Unwind the water jet hose reel and place it down the slope of the stilling basin(Location C). Use -If water remains 24-48 hours following a storm event,cleanout underdrain(Location G)and hose to loosen the accumulated sediment. cultivate soils,as required: 3. Place the flexible suction hose into the stilling basin(Location C). ■Close valve at end of underdrain pipe,near riser box. 4. Perform"vectoring"operations by simultaneously using ■Attach a standard compressor and fitting to first cleanout and run compressed air through pipe. the suction arm and water jet hose to remove slurry Repeat for all remaining connections until grass turf above underdrain is sufficiently broken up. until the rip-rap base is reached. ■Remove compressor hose and fitting. Restore valve to original setting. 5. Continue slurry removal until capacity of"vactor"truck 1)Refer to site specific SWPPP and ■Till and revegetate disturbed soil. is reached. regulated MS4 for reporting -Note sediment accumulation. Remove sediment manually when sediment is dry(visible cracks) 6. Stop"vactoring'work. Dispose of slurry off-site. requirements related to and readily separates from basin floor. Till and revegetate remaining soil. 7. Repeat Steps 1-6 until all the sediment has been maintenance -Replace plantings or cultivate soils to ensure adequate filtration,as required. removed' 2)Report practice failures to owner 9. If severe clogging accum and ttie abow measures are not effective: 8. After"vectoring"work is complete,carefully remove the operator and relevant regulated -Remove and replace all media to original specifications or to approved,revised specifications. flexible suction hose and the water jet hose from stilling MS4 -Unnderdrain piping may be reused if in good condition. basin,and transport them back to the truck. 9. Inspect the accessway and adjacent area for damage, DEWATERING PROCEDURE AT PRETREATMENT DEVICE such as dislodged field stone,wood chips,etc.,and refurbish as required. The stilling basin or other pretreatment device must be dewatered before proceeding with"vactoring operations. -Erasion and Sediment Control Note: Secure locks an gates as necessary .Inlet/Outlet Protection Methodology: prior to exiting site. .Sediment Removal 1. Park the'vactor"truck along the maintenance accessway near the inlet(Location A). The boom -Pretreatment Devices should be extended in the direction of the stilling basin. -Underdrains 2. Ensure clear access for a two-person crew down the slope near the stilling basin(Location C). -Landscaping 3. Pump outthe waterfrom the stilling basin to the grass channel(Location E)downstream. -Mechanical Issues 4. Proceed with"vectoring"operations. .Riser/Barrel Outlet Structure -Maintenance Access -Cold Climate Considerations Appendix M Environmental Assessment Form Stormwater Pollution Prevention Plan(SWPPP) M 20 Skyward Drive February 2025 Full Environmental Assessment Form Part 1 -Project and Setting Instructions for Completing Part 1 Part 1 is to be completed by the applicant or project sponsor. Responses become part of the application for approval or funding, are subject to public review,and may be subject to further verification. Complete Part 1 based on information currently available. If additional research or investigation would be needed to fully respond to any item,please answer as thoroughly as possible based on current information;indicate whether missing information does not exist, or is not reasonably available to the sponsor;and,when possible,generally describe work or studies which would be necessary to update or fully develop that information. Applicants/sponsors must complete all items in Sections A&B. In Sections C,D&E,most items contain an initial question that must be answered either"Yes"or"No". If the answer to the initial question is"Yes",complete the sub-questions that follow. If the answer to the initial question is"No",proceed to the next question. Section F allows the project sponsor to identify and attach any additional information. Section G requires the name and signature of the applicant or project sponsor to verify that the information contained in Part 1is accurate and complete. A.Project and Applicant/Sponsor Information. Name of Action or Project: Skyward Drive Proposed Warehouse Project Location(describe,and attach a general location map): 20 Skyward Dirve,Saratoga Springs,NY 12866 Brief Description of Proposed Action(include purpose or need): The applicant is proposing to construct a t120,000 sq.ft.single-story principal flex industrial warehouse building with office on a vacant t12.4-acre parcel with address 20 Skyward Drive. The parcel is located in the City of Saratoga Springs,NY(TM#:178.-1-61)and located in the General Industrial(IND-G) zone and is an allowed use.The development plan includes other site appurtenances such as storm water management,public and private utility service connections,parking and loading areas,landscaping,and site lighting. The multi-tenant or single-tenant structure will incorporate roughly 5%-10%of demised office and the remaining area dedicated to high-bay industrial warehouse use with multiple loading dock positions along the west building wall. Typical interior uses could accommodate a wide range of general manufacturing,wholesaling,storage and distribution of raw material and finished goods merchandise.Onsite parking,loading areas and two(2)full access curb cuts are proposed onto Skyward Drive and are situated at the northern and southern ends of the parcel. The project will disturb greater than one(1)acre of land and will be subject to a New York State Department of Environmental Conservation(NYSDEC).The project scope of work entails clearing and grubbing,earthwork and grading for the preparation of the building pad,parking, stormwater management areas,utility installations,building construction,paving,landscaping and lighting. Name of Applicant/Sponsor: Telephone:(518)584-6174 Munter Land Holdings,LLC E-Mail:john@munterenterprises.com Address:881 Murray Road City/PO:Middle Grove State:NY Zip Code:12850 Project Contact(if not same as sponsor;give name and title/role): Telephone:Same as Applicant/Sponsor John Munter,President E-Mail: Same as Applicant/Sponsor Address: Same as Applicant/Sponsor City/PO: State: Zip Code: Same as Applicant/Sponsor Same as Applicant/Sponsor Same as Property Owner (if not same as sponsor): Telephone: Same as Applicant/Sponsor Same as Applicant/Sponsor E-Mail: Same as Applicant/Sponsor Address: Same as Applicant/Sponsor City/PO: State: Zip Code: Same as Applicant/Sponsor Same as Applicant Page 1 of 13 B.Government Approvals B.Government Approvals,Funding,or Sponsorship. ("Funding"includes grants,loans,tax relief,and any other forms of financial assistance.) Government Entity If Yes: Identify Agency and Approval(s) Application Date Required (Actual or projected) a. City Counsel,Town Board, ❑Yes❑No or Village Board of Trustees b.City,Town or Village ®Yes❑No Saratoga Springs Planning Board-Site Plan March 2025 Planning Board or Commission Approval,Land Disturbance Permit c. City,Town or ❑Yes❑No Village Zoning Board of Appeals d.Other local agencies ❑Yes❑No e. County agencies ❑Yes❑No f.Regional agencies ❑Yes❑No g. State agencies ®Yes❑NO NYSDEC-SPDES Permit GP-0-25-001 1 mo following site plan approval h.Federal agencies ❑Yes❑No i. Coastal Resources. i. Is the project site within a Coastal Area,or the waterfront area of a Designated Inland Waterway? ❑YesmNo ii. Is the project site located in a community with an approved Local Waterfront Revitalization Program? ❑YesmNo iii. Is the project site within a Coastal Erosion Hazard Area? ❑YesmNo C.Planning and Zoning C.I.Planning and zoning actions. Will administrative or legislative adoption,or amendment of a plan,local law,ordinance,rule or regulation be the ❑YesmNo only approval(s)which must be granted to enable the proposed action to proceed? • If Yes,complete sections C,F and G. • If No,proceed to question C.2 and complete all remaining sections and questions in Part 1 C.2.Adopted land use plans. a.Do any municipally-adopted (city,town,village or county)comprehensive land use plan(s)include the site mYes❑No where the proposed action would be located? If Yes,does the comprehensive plan include specific recommendations for the site where the proposed action mYes❑No would be located? b.Is the site of the proposed action within any local or regional special planning district(for example: Greenway; mYes❑No Brownfield Opportunity Area(BOA);designated State or Federal heritage area;watershed management plan; or other?) If Yes,identify the plan(s): NYS Heritage Areas:Mohawk Valley Heritage Corridor c. Is the proposed action located wholly or partially within an area listed in an adopted municipal open space plan, ❑YesmNo or an adopted municipal farmland protection plan? If Yes,identify the plan(s): Page 2 of 13 C.3. Zoning a. Is the site of the proposed action located in a municipality with an adopted zoning law or ordinance. ®Yes❑No If Yes,what is the zoning classification(s)including any applicable overlay district? General Industrial OND-G) b. Is the use permitted or allowed by a special or conditional use permit? ®Yes❑No c.Is a zoning change requested as part of the proposed action? ❑Yes®No If Yes, i. What is the proposed new zoning for the site? CA.Existing community services. a. In what school district is the project site located?Saratoga Springs CSD b.What police or other public protection forces serve the project site? City of Saratoga Springs Police Department c.Which fire protection and emergency medical services serve the project site? City of Saratoga Springs Fire Department d.What parks serve the project site? Geyser Park,Saratoga Spa State Park D.Project Details DA.Proposed and Potential Development a.What is the general nature of the proposed action(e.g.,residential,industrial,commercial,recreational;if mixed,include all components)? Commercial/Industrial/Manufacturing b. a.Total acreage of the site of the proposed action? ±12.4 acres b.Total acreage to be physically disturbed? ±11.2 acres c. Total acreage(project site and any contiguous properties)owned or controlled by the applicant or project sponsor? ±25.5 acres c.Is the proposed action an expansion of an existing project or use? ❑Yes®No i. If Yes,what is the approximate percentage of the proposed expansion and identify the units(e.g.,acres,miles,housing units, square feet)? % Units: d.Is the proposed action a subdivision,or does it include a subdivision? ❑Yes OIo If Yes, i. Purpose or type of subdivision?(e.g.,residential,industrial,commercial;if mixed,specify types) ii. Is a cluster/conservation layout proposed? ❑Yes❑No iii. Number of lots proposed? iv. Minimum and maximum proposed lot sizes? Minimum Maximum e.Will the proposed action be constructed in multiple phases? ❑Yes®No i. If No,anticipated period of construction: 12 months ii. If Yes: • Total number of phases anticipated • Anticipated commencement date of phase 1 (including demolition) month year • Anticipated completion date of final phase month wear • Generally describe connections or relationships among phases,including any contingencies where progress of one phase may determine timing or duration of future phases: Page 3 of 13 f.Does the project include new residential uses? ❑Yes®No If Yes,show numbers of units proposed. One Familv Two Familv Three Familv Multiple Familv four or more Initial Phase At completion of all phases g.Does the proposed action include new non-residential construction(including expansions)? ®Yes❑No If Yes, i.Total number of structures 1 ii. Dimensions(in feet)of largest proposed structure: 40' height; 150'width; and 800'length iii. Approximate extent of building space to be heated or cooled: ±120,000 square feet h.Does the proposed action include construction or other activities that will result in the impoundment of any ❑Yes®No liquids,such as creation of a water supply,reservoir,pond,lake,waste lagoon or other storage? If Yes, i. Purpose of the impoundment: ii. If a water impoundment,the principal source of the water: ❑ Ground water❑Surface water streams ❑Other specify: iii. If other than water,identify the type of impounded/contained liquids and their source. iv. Approximate size of the proposed impoundment. Volume: million gallons;surface area: acres v. Dimensions of the proposed dam or impounding structure: height; length vi. Construction method/materials for the proposed dam or impounding structure(e.g.,earth fill,rock,wood,concrete): D.2. Project Operations a.Does the proposed action include any excavation,mining,or dredging,during construction,operations,or both? ❑Yes✓❑No (Not including general site preparation,grading or installation of utilities or foundations where all excavated materials will remain onsite) If Yes: i.What is the purpose of the excavation or dredging? ii. How much material(including rock,earth,sediments,etc.)is proposed to be removed from the site? • Volume(specify tons or cubic yards): • Over what duration of time? iii. Describe nature and characteristics of materials to be excavated or dredged,and plans to use,manage or dispose of them. iv. Will there be onsite dewatering or processing of excavated materials? ❑Yes❑No If yes,describe. v. What is the total area to be dredged or excavated? acres vi. What is the maximum area to be worked at any one time? acres vii. What would be the maximum depth of excavation or dredging? feet viii. Will the excavation require blasting? ❑Yes❑No ix. Summarize site reclamation goals and plan: b.Would the proposed action cause or result in alteration of,increase or decrease in size of,or encroachment ❑YesZNo into any existing wetland,waterbody,shoreline,beach or adjacent area? If Yes: i. Identify the wetland or waterbody which would be affected(by name,water index number,wetland map number or geographic description): Page 4 of 13 H. Describe how the proposed action would affect that waterbody or wetland,e.g.excavation,fill,placement of structures,or alteration of channels,banks and shorelines. Indicate extent of activities,alterations and additions in square feet or acres: iii.Will the proposed action cause or result in disturbance to bottom sediments? ❑Yes❑No If Yes,describe: iv. Will the proposed action cause or result in the destruction or removal of aquatic vegetation? ❑Yes❑No If Yes: • acres of aquatic vegetation proposed to be removed: • expected acreage of aquatic vegetation remaining after project completion: • purpose of proposed removal(e.g.beach clearing,invasive species control,boat access): • proposed method of plant removal: • if chemical/herbicide treatment will be used,specify product(s): v. Describe any proposed reclamation/mitigation following disturbance: c.Will the proposed action use,or create a new demand for water? mYes❑No If Yes: i. Total anticipated water usage/demand per day: 1,200 gallons/day ii. Will the proposed action obtain water from an existing public water supply? ®Yes❑No If Yes: • Name of district or service area: City of Saratoga Springs District# • Does the existing public water supply have capacity to serve the proposal? ®Yes[--]No • Is the project site in the existing district? m Yes❑No • Is expansion of the district needed? ❑Yes®No • Do existing lines serve the project site? m Yes❑No iii. Will line extension within an existing district be necessary to supply the project? ❑Yes Rio If Yes: • Describe extensions or capacity expansions proposed to serve this project: • Source(s)of supply for the district: iv. Is a new water supply district or service area proposed to be formed to serve the project site? ❑Yes®No If,Yes: • Applicant/sponsor for new district: • Date application submitted or anticipated: • Proposed source(s)of supply for new district: v. If a public water supply will not be used,describe plans to provide water supply for the project: vi.If water supply will be from wells(public or private),what is the maximum pumping capacity: gallons/minute. d.Will the proposed action generate liquid wastes? m Yes❑No If Yes: i. Total anticipated liquid waste generation per day: 1,200 gallons/day ii. Nature of liquid wastes to be generated(e.g.,sanitary wastewater,industrial;if combination,describe all components and approximate volumes or proportions of each): Sanitary wastewater iii. Will the proposed action use any existing public wastewater treatment facilities? m Yes❑No If Yes: • Name of wastewater treatment plant to be used: Saratoga County • Name of district: Sewer District#1 • Does the existing wastewater treatment plant have capacity to serve the project? m Yes❑No • Is the project site in the existing district? m Yes[]No • Is expansion of the district needed? ❑Yes W]No Page 5 of 13 • Do existing sewer lines serve the project site? ®Yes❑No • Will a line extension within an existing district be necessary to serve the project? ❑Yes®No If Yes: • Describe extensions or capacity expansions proposed to serve this project: iv. Will a new wastewater(sewage)treatment district be formed to serve the project site? ❑Yes®No If Yes: • Applicant/sponsor for new district: • Date application submitted or anticipated: • What is the receiving water for the wastewater discharge? V. If public facilities will not be used,describe plans to provide wastewater treatment for the project,including specifying proposed receiving water(name and classification if surface discharge or describe subsurface disposal plans): vi. Describe any plans or designs to capture,recycle or reuse liquid waste: e.Will the proposed action disturb more than one acre and create stormwater runoff,either from new point ®Yes❑No sources(i.e. ditches,pipes,swales,curbs,gutters or other concentrated flows of stormwater)or non-point source(i.e. sheet flow)during construction or post construction? If Yes: i. How much impervious surface will the project create in relation to total size of project parcel? Square feet or ±6.77 acres(impervious surface) Square feet or ±12.4 acres(parcel size) ii. Describe types of new point sources.Stormwater conveyance systems;sheetflow,closed and open drainage systems. iii. Where will the stormwater runoff be directed(i.e.on-site stormwater management facility/structures,adjacent properties, groundwater,on-site surface water or off-site surface waters)? On-site stormwater management practices,two(2)infiltration basins. • If to surface waters,identify receiving water bodies or wetlands: n/a • Will stormwater runoff flow to adjacent properties? El Yes®No iv. Does the proposed plan minimize impervious surfaces,use pervious materials or collect and re-use stormwater? ®Yes❑No f. Does the proposed action include,or will it use on-site,one or more sources of air emissions,including fuel ®Yes❑No combustion,waste incineration,or other processes or operations? If Yes,identify: i.Mobile sources during project operations(e.g.,heavy equipment,fleet or delivery vehicles) Standard construction equipment to move siupplies and product(front-end loaders,excavators,buldozers,fork lifts,etc.) ii. Stationary sources during construction(e.g.,power generation,structural heating,batch plant,crushers) 4 stroke generators(wheeled and vehicle-affixed)for discrete trades prior to temporary power provided to construction site. iii. Stationary sources during operations(e.g.,process emissions,large boilers,electric generation) n/a g.Will any air emission sources named in D.2.f(above),require a NY State Air Registration,Air Facility Permit, ❑Yes®No or Federal Clean Air Act Title IV or Title V Permit? If Yes: L Is the project site located in an Air quality non-attainment area? (Area routinely or periodically fails to meet ❑Yes❑No ambient air quality standards for all or some parts of the year) ii. In addition to emissions as calculated in the application,the project will generate: • Tons/year(short tons)of Carbon Dioxide(CO2) • Tons/year(short tons)of Nitrous Oxide(N20) • Tons/year(short tons)of Perfluorocarbons(PFCs) • Tons/year(short tons)of Sulfur Hexafluoride(SF6) • Tons/year(short tons)of Carbon Dioxide equivalent of Hydroflourocarbons(HFCs) • Tons/year(short tons)of Hazardous Air Pollutants(HAPs) Page 6 of 13 h.Will the proposed action generate or emit methane(including,but not limited to,sewage treatment plants, ❑YesZ No landfills,composting facilities)? If Yes: i. Estimate methane generation in tons/year(metric): ii.Describe any methane capture,control or elimination measures included in project design(e.g.,combustion to generate heat or electricity,flaring): i.Will the proposed action result in the release of air pollutants from open-air operations or processes,such as ❑YesZ No quarry or landfill operations? If Yes:Describe operations and nature of emissions(e.g.,diesel exhaust,rock particulates/dust): j.Will the proposed action result in a substantial increase in traffic above present levels or generate substantial ❑YesZ No new demand for transportation facilities or services? If Yes: i. When is the peak traffic expected(Check all that apply): ❑Morning ❑Evening ❑Weekend ❑Randomly between hours of to ii. For commercial activities only,projected number of truck trips/day and type(e.g.,semi trailers and dump trucks): iii. Parking spaces: Existing Proposed Net increase/decrease iv. Does the proposed action include any shared use parking? ❑Yes[]No v. If the proposed action includes any modification of existing roads,creation of new roads or change in existing access,describe: vi. Are public/private transportation service(s)or facilities available within'h mile of the proposed site? [-]Yes[-]No vii Will the proposed action include access to public transportation or accommodations for use of hybrid,electric [-]Yes[-]No or other alternative fueled vehicles? viii.Will the proposed action include plans for pedestrian or bicycle accommodations for connections to existing [-]Yes[-]No pedestrian or bicycle routes? k.Will the proposed action(for commercial or industrial projects only)generate new or additional demand OYes❑No for energy? If Yes: i. Estimate annual electricity demand during operation of the proposed action: ±202 MWHrsiYear ii. Anticipated sources/suppliers of electricity for the project(e.g.,on-site combustion,on-site renewable,via grid/local utility,or other): Local utility company(National Grid) iii. Will the proposed action require a new,or an upgrade,to an existing substation? ❑YesZNo 1.Hours of operation. Answer all items which apply. i. During Construction: ii. During Operations: • Monday-Friday: 6-7 • Monday-Friday: 24-hours(three shifts) • Saturday: 6-7 • Saturday: 24-hours(three shifts) • Sunday: 6-7 • Sunday: 24-hours(three shifts) • Holidays: • Holidays: Page 7 of 13 m.Will the proposed action produce noise that will exceed existing ambient noise levels during construction, ®Yes El No operation,or both? If yes: i. Provide details including sources,time of day and duration: Normal construction operations-Hours limited as reguried by City Code. ii. Will the proposed action remove existing natural barriers that could act as a noise barrier or screen? ❑Yes®No Describe: n.Will the proposed action have outdoor lighting? ®Yes❑No If yes: i. Describe source(s),location(s),height of fixture(s),direction/aim,and proximity to nearest occupied structures: Standard parking lot and building lighting for security and visibility,heights less and twenty(20)feet. H. Will proposed action remove existing natural barriers that could act as a light barrier or screen? ®Yes❑No Describe:Cearing of existing vegetation for development.Exterior lighting will be compliant with City Code. o. Does the proposed action have the potential to produce odors for more than one hour per day? ❑Yes®No If Yes,describe possible sources,potential frequency and duration of odor emissions,and proximity to nearest occupied structures: p.Will the proposed action include any bulk storage of petroleum(combined capacity of over 1,100 gallons) ❑Yes®No or chemical products 185 gallons in above ground storage or any amount in underground storage? If Yes: i. Product(s)to be stored ii. Volume(s) per unit time (e.g.,month,year) iii. Generally,describe the proposed storage facilities: q.Will the proposed action(commercial,industrial and recreational projects only)use pesticides(i.e.,herbicides, ®Yes [-]No insecticides)during construction or operation? If Yes: i. Describe proposed treatment(s): Turf-grass heribicides and pesticides may be used to treat and maintain lawned areas. Applications will be provided by licensed private contactors at the time of service. ii. Will the proposed action use Integrated Pest Management Practices? ❑ Yes ®No r.Will the proposed action(commercial or industrial projects only)involve or require the management or disposal ® Yes ❑No of solid waste(excluding hazardous materials)? If Yes: i. Describe any solid waste(s)to be generated during construction or operation of the facility: • Construction: 5 tons per Month (unit of time) • Operation: 3 tons per Month (unit of time) ii. Describe any proposals for on-site minimization,recycling or reuse of materials to avoid disposal as solid waste: • Construction:Scrap materials,metals,cardboard,large plastic packaging to be recycled. • Operation: Material mis-fabs to be recycled,consumer waste recyclables to be disposed of in zero sort recycling. iii. Proposed disposal methods/facilities for solid waste generated on-site: • Construction:C&D dumpsters to be transported by certified waste haulers. • Operation: Waste and recyclables to be transported by certified waste haulers. Page 8 of 13 s.Does the proposed action include construction or modification of a solid waste management facility? ❑ Yes 0 No If Yes: i. Type of management or handling of waste proposed for the site(e.g.,recycling or transfer station,composting,landfill,or other disposal activities): H. Anticipated rate of disposal/processing: • Tons/month,if transfer or other non-combustion/thermal treatment,or • Tons/hour,if combustion or thermal treatment iii. If landfill,anticipated site life: years t.Will the proposed action at the site involve the commercial generation,treatment,storage, or disposal of hazardous❑Yes ZNo waste? If Yes: i.Name(s)of all hazardous wastes or constituents to be generated,handled or managed at facility: ii. Generally describe processes or activities involving hazardous wastes or constituents: iii. Specify amount to be handled or generated tons/month iv. Describe any proposals for on-site minimization,recycling or reuse of hazardous constituents: v. Will any hazardous wastes be disposed at an existing offsite hazardous waste facility? ❑Yes❑No If Yes:provide name and location of facility: If No: describe proposed management of any hazardous wastes which will not be sent to a hazardous waste facility: E.Site and Setting of Proposed Action E.I.Land uses on and surrounding the project site a.Existing land uses. i. Check all uses that occur on,adjoining and near the project site. ❑ Urban ® Industrial ❑ Commercial ❑ Residential(suburban) ❑ Rural(non-farm) ❑ Forest ❑ Agriculture ❑ Aquatic ® Other(specify):Heavy rail ii. If mix of uses,generally describe: b.Land uses and covertypes on the project site. Land use or Current Acreage After Change Covertype Acreage Project Completion (Acres+/-) • Roads,buildings,and other paved or impervious surfaces ±0.4 ±7.2 +6.8 • Forested ±5.5 ±0.5 -5.0 • Meadows,grasslands or brushlands(non- agricultural,including abandoned agricultural) 6.5 ±4.7 -1.8 • Agricultural 0.0 0.0 0 (includes active orchards,field,greenhouse etc.) • Surface water features (lakes,ponds,streams,rivers,etc.) 0.0 0.0 0 • Wetlands(freshwater or tidal) 0.0 0.0 0 • Non-vegetated(bare rock,earth or fill) 0.0 0.0 0 • Other Describe: Page 9 of 13 c.Is the project site presently used by members of the community for public recreation? ❑Yes®No i. If Yes: explain: d.Are there any facilities serving children,the elderly,people with disabilities(e.g.,schools,hospitals,licensed ❑YesmNo day care centers,or group homes)within 1500 feet of the project site? If Yes, i. Identify Facilities: e.Does the project site contain an existing dam? ❑YesONo If Yes: i. Dimensions of the dam and impoundment: • Dam height: feet • Dam length: feet • Surface area: acres • Volume impounded: gallons OR acre-feet ii. Dam's existing hazard classification: W. Provide date and summarize results of last inspection: f.Has the project site ever been used as a municipal,commercial or industrial solid waste management facility, ❑YesONo or does the project site adjoin property which is now,or was at one time,used as a solid waste management facility? If Yes: i. Has the facility been formally closed? [-]Yes[-] No • If yes,cite sources/documentation: ii. Describe the location of the project site relative to the boundaries of the solid waste management facility: W. Describe any development constraints due to the prior solid waste activities: g.Have hazardous wastes been generated,treated and/or disposed of at the site,or does the project site adjoin ❑YesONo property which is now or was at one time used to commercially treat,store and/or dispose of hazardous waste? If Yes: i. Describe waste(s)handled and waste management activities,including approximate time when activities occurred: h. Potential contamination history. Has there been a reported spill at the proposed project site,or have any ❑Yes® No remedial actions been conducted at or adjacent to the proposed site? If Yes: i. Is any portion of the site listed on the NYSDEC Spills Incidents database or Environmental Site ❑Yes❑No Remediation database? Check all that apply: ❑ Yes-Spills Incidents database Provide DEC ID number(s): ❑ Yes-Environmental Site Remediation database Provide DEC ID number(s): ❑ Neither database ii. If site has been subject of RCRA corrective activities,describe control measures: W. Is the project within 2000 feet of any site in the NYSDEC Environmental Site Remediation database? ❑Yes®No If yes,provide DEC ID number(s): iv. If yes to(i),(ii)or(iii)above,describe current status of site(s): Page 10 of 13 v. Is the project site subject to an institutional control limiting property uses? ❑YesmNo • If yes,DEC site ID number: • Describe the type of institutional control(e.g.,deed restriction or easement): • Describe any use limitations: • Describe any engineering controls: • Will the project affect the institutional or engineering controls in place? ❑Yes❑No • Explain: E.2. Natural Resources On or Near Project Site a.What is the average depth to bedrock on the project site? <8 feet b.Are there bedrock outcroppings on the project site? ❑YesONo If Yes,what proportion of the site is comprised of bedrock outcroppings? % c.Predominant soil type(s)present on project site: Windsor Loamy Sand ±70 % Udipsamments,dredged ±30 % d.What is the average depth to the water table on the project site? Average: >8 feet e.Drainage status of project site soils:0 Well Drained: 100%of site ❑ Moderately Well Drained: %of site ❑ Poorly Drained %of site f.Approximate proportion of proposed action site with slopes: ® 0-10%: ±80 %of site ❑ 10-15%: %of site 15%or greater: +20 %of site g.Are there any unique geologic features on the project site? ❑YesONo If Yes,describe: h. Surface water features. i. Does any portion of the project site contain wetlands or other waterbodies(including streams,rivers, ❑YesONo ponds or lakes)? ii. Do any wetlands or other waterbodies adjoin the project site? ❑YesONo If Yes to either i or ii,continue. If No,skip to E.2.i. iii. Are any of the wetlands or waterbodies within or adjoining the project site regulated by any federal, ❑Yes ONO state or local agency? iv. For each identified regulated wetland and waterbody on the project site,provide the following information: • Streams: Name Classification • Lakes or Ponds: Name Classification 0 Wetlands: Name Approximate Size • Wetland No.(if regulated by DEC) v. Are any of the above water bodies listed in the most recent compilation of NYS water quality-impaired ❑Yes ONo waterbodies? If yes,name of impaired water body/bodies and basis for listing as impaired: i.Is the project site in a designated Floodway? ❑YesONo j.Is the project site in the 100-year Floodplain? [-]Yes[Z]No k.Is the project site in the 500-year Floodplain? ❑Yes[Z]No 1.Is the project site located over,or immediately adjoining,a primary,principal or sole source aquifer? OYes❑No If Yes: i.Name of aquifer:Principal Aquifer Page 11 of 13 m. Identify the predominant wildlife species that occupy or use the project site: Small game Deer n.Does the project site contain a designated significant natural community? ❑YesW]No If Yes: i. Describe the habitat/community(composition,function,and basis for designation): ii. Source(s)of description or evaluation: iii. Extent of community/habitat: • Currently: acres • Following completion of project as proposed: acres • Gain or loss(indicate+or-): acres o.Does project site contain any species of plant or animal that is listed by the federal government or NYS as ®Yes❑No endangered or threatened,or does it contain any areas identified as habitat for an endangered or threatened species? If Yes: i. Species and listing(endangered or threatened): Frosted Elfin, Kamer Blue p. Does the project site contain any species of plant or animal that is listed by NYS as rare,or as a species of ❑YesONo special concern? If Yes: i. Species and listing: q.Is the project site or adjoining area currently used for hunting,trapping,fishing or shell fishing? ❑YesmNo If yes,give a brief description of how the proposed action may affect that use: E.3. Designated Public Resources On or Near Project Site a.Is the project site,or any portion of it,located in a designated agricultural district certified pursuant to ❑YesONo Agriculture and Markets Law,Article 25-AA, Section 303 and 304? If Yes, provide county plus district name/number: b.Are agricultural lands consisting of highly productive soils present? ❑Yes WINO i. If Yes: acreage(s)on project site? ii. Source(s)of soil rating(s): c. Does the project site contain all or part of,or is it substantially contiguous to,a registered National ❑Yes ONo Natural Landmark? If Yes: i. Nature of the natural landmark: ❑Biological Community ❑ Geological Feature ii. Provide brief description of landmark,including values behind designation and approximate size/extent: d.Is the project site located in or does it adjoin a state listed Critical Environmental Area? ❑YesW]No If Yes: i. CEA name: ii. Basis for designation: iii. Designating agency and date: Page 12 of 13 e.Does the project site contain,or is it substantially contiguous to,a building,archaeological site,or district ❑Yes®No which is listed on the National or State Register of Historic Places,or that has been determined by the Commissioner of the NYS Office of Parks,Recreation and Historic Preservation to be eligible for listing on the State Register of Historic Places? If Yes: i. Nature of historic/archaeological resource: ❑Archaeological Site ❑Historic Building or District ii. Name: iii.Brief description of attributes on which listing is based: f.Is the project site,or any portion of it,located in or adjacent to an area designated as sensitive for ❑YesONo archaeological sites on the NY State Historic Preservation Office(SHPO)archaeological site inventory? I g.Have additional archaeological or historic site(s)or resources been identified on the project site? ❑Yes®No If Yes: i.Describe possible resource(s): ii. Basis for identification: I h.Is the project site within fives miles of any officially designated and publicly accessible federal,state,or local ®Yes❑No scenic or aesthetic resource? If Yes: i. Identify resource: Saratoga S;a State Park,Sarako a Lake,CRY of Saratoga Trails. ii.Nature of,or basis for,designation(e.g.,established highway overlook,state or local park,state historic trail or scenic byway, etc.):State Park Waterbody,Trails iii. Distance between project and resource: <1 miles. i. Is the project site located within a designated river corridor under the Wild,Scenic and Recreational Rivers ❑Yes®No Program 6 NYCRR 666? If Yes: i.Identify the name of the river and its designation: ii.Is the activity consistent with development restrictions contained in 6NYCRR Part 666? ❑Yes❑No F.Additional Information Attach any additional information which may be needed to clarify your project. If you have identified any adverse impacts which could be associated with your proposal,please describe those impacts plus any measures which you propose to avoid or minimize them. G. Verification I certify that the information provided is true to the best of my knowledge. Applicant/Sponsor NL John Munter Date 3 3 zo 2 Signature Title President (:T PRINT FORM Page 13 of 13 EAF Mapper Summary Report Wednesday, February 19, 2025 1:56 PM Disclaimer: The EAF Mapper is a screening tool intended to assist project sponsors and reviewing agencies in preparing an environmental UnILM14d assessment form(EAF).Not all questions asked in the EAF are answered by the EAF Mapper.Additional information on any EAF question can be obtained by consulting the EAF Workbooks. Although the EAF Mapper provides the most up-to-date digital data available to DEC,you may also need to contact local or other data sources in order to obtain data not provided by the Mapper.Digital data is not a substitute for agency determinations. n 6 _ =Al ,I d� Baf•F � F[u7p.inn MOMpe Sar toga Sprl gs Tcwi.3rrt6 Fianl Ikon `� Burkjk r_ Finr�r,rrr Albany _ — Geycer Rd — Sour:es:Esr. HERE Garmi7 USES Ir#erinav INtiREhAW171,I Sourtes:Esri HERE Gafmir USGS, Intefrnap, INCREMENT F `.RCan, Esri Japar. MET I, Esri RCan Es•i! pa-t, FAE-I, Esn China fr3ng.IC,rg', Esn IC yea Es•i China(Horg Kong),Esri Korey.Esri tThailand%,NGCC. 4,-CrperS#reUg4ap con#ribu#ors, a-ld Thal a-io; NGCC. !.; Dpe r 51.re!!tM ap€c�lrw�utors and#-le i15 the Gl5 Use,Caml~�.Iry#; r User�: rr�i.f'if;, Esri HERE G_-r rin I � S NPS IPlrr:nllmn . B.i.i [Coastal or Waterfront Area] No B.i.ii [Local Waterfront Revitalization Area] No C.2.b. [Special Planning District] Yes- Digital mapping data are not available for all Special Planning Districts. Refer to EAF Workbook. C.2.b. [Special Planning District- Name] NYS Heritage Areas:Mohawk Valley Heritage Corridor E.1.h [DEC Spills or Remediation Site- Digital mapping data are not available or are incomplete. Refer to EAF Potential Contamination History] Workbook. E.1.h.i [DEC Spills or Remediation Site- Digital mapping data are not available or are incomplete. Refer to EAF Listed] Workbook. E.1.h.i [DEC Spills or Remediation Site- Digital mapping data are not available or are incomplete. Refer to EAF Environmental Site Remediation Database] Workbook. E.1.h.iii [Within 2,000' of DEC Remediation No Site] E.2.g [Unique Geologic Features] No E.2.h.i [Surface Water Features] No E.2.h.ii [Surface Water Features] No E.2.h.iii [Surface Water Features] No E.2.h.v [Impaired Water Bodies] No E.2.i. [Floodway] Digital mapping data are not available or are incomplete. Refer to EAF Workbook. E.2.]. [100 Year Floodplain] Digital mapping data are not available or are incomplete. Refer to EAF Workbook. E.2.k. [500 Year Floodplain] Digital mapping data are not available or are incomplete. Refer to EAF Workbook. E.2.1. [Aquifers] Yes E.2.1. [Aquifer Names] Principal Aquifer Full Environmental Assessment Form - EAF Mapper Summary Report 1 E.2.n. [Natural Communities] No E.2.o. [Endangered or Threatened Species] Yes E.2.o. [Endangered or Threatened Species- Frosted Elfin, Kamer Blue Name] E.2.p. [Rare Plants or Animals] No E.3.a. [Agricultural District] No E.3.c. [National Natural Landmark] No E.3.d [Critical Environmental Area] No E.3.e. [National or State Register of Historic Digital mapping data are not available or are incomplete. Refer to EAF Places or State Eligible Sites] Workbook. E.3.f. [Archeological Sites] No E.3.i. [Designated River Corridor] No Full Environmental Assessment Form - EAF Mapper Summary Report 2 Appendix N Notice of Termination Stormwater Pollution Prevention Plan(SWPPP) N 20 Skyward Drive February 2025 YORK Department of STATE Environmental Conservation eNOT Qualified Inspector Certification — Final Stabilization for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. CGP SPDES Permit ID: III. Certification Statement I hereby certify that all the requirements in CGP Part V.A.1.a.i., ii., and iii. or CGP Part V.A.1.b.i., ii., and iii. have been achieved. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the Qualified Inspector: b. Title/Position: c. Signature: d. Date: YORK Department of STATE Environmental Conservation eNOT Qualified Inspector Certification — SMPs for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. CGP SPDES Permit ID: III. Certification Statement I hereby certify that all the requirements in CGP Part V.A.1.a.iv. or CGP Part V.A.1.b.iv. have been achieved. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the Qualified Inspector: b. Title/Position: c. Signature: d. Date: YORK Department of STATE Environmental Conservation eNOT MS4 Acceptance for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. CGP SPDES Permit ID: III. Traditional Land Use Control MS4 Operator Information a. Name of MS4 Operator: b. MS4 SPDES Permit ID Number: NYR20A c. Street Address: d. City/State/Zip: e. Telephone Number: IV. Certification Statement I have determined that it is acceptable for the owner or operator of the construction project identified above to submit the electronic Notice of Termination in accordance with CGP Part V. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2.: b. Title/Position: c. Signature: d. Date: YORK Department of STATE Environmental Conservation eNOT Owner or Operator Certification for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. CGP SPDES Permit ID: III. Certification Statement I certify that I have met the requirements of CGP Part V.A.1., 2., 3., and 4. 1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the Owner or Operator: b. Title/Position: c. Signature: d. Date: Appendix O Erosion and Sediment Control Plans Stormwater Pollution Prevention Plan(SWPPP) O 20 Skyward Drive February 2025 �Ijj'IIIIr ((/�Ir/rrllllII I I 'I`"((I'11'Illi,"'111>>I�\� IIIIII(IIIIIII IIIIIII I IIIlllllll IIII ( ( \ 11 \ -� /---_---- _ _ `�I� ✓ \/��/� - _/ IIIIIII IIII II 1 I I }II I I III)I\(1�\\\�\\ \�-/ _ IIII - /--- --^\�` -- _ ___ _ v � --�-_ II II IIII I _ IIIIIIIIIIIIIIIIIIIIIIII ----- - ----------- - \// III IIII \ - / /\_/ /IIIII IIIIII I I IIIIII II \ \\�� \\ --------------\ J� _- -'�---�-----,_--_ � IIIIII IIII 1111IIIIIII I 1111,,11i1, IIIII `\\\ ► -�� \ I I ^`/1 - ____ -_ -- _ --__ - \ / I IIII II IIII \\ \\L \ \ I �- --_ ^- \/- -� .__ �\-�`_ (IIIIIII IIIIII II � I l}IIII \ 1 1 �\ �' 1\1 \ \ I �`-` --- ,_-- - ent / I II IIII II II � IIIIIII\\\ \\\\\ ti � \\ \\\\ �\ \\_//"�, 4__ �__ � -�...��-/�_-__�=� `J'� ___ �---� �__ � ,-� � - - "-_ � I / / II IIII IIII \1\III IIII\\\\\\\11 ��\\�\\� \ �? -__ `� (� �/ ( \ � � �_�~ �\ 'C ,�r _ II\\\\\ \ II111�\ \ \IIIII \\\ \\ \ \ ,-/ =_-=__ -/ , _ � T ! _ y� _ Engineering / III I I IIIIII 1 1 \ \\\ /i- - _ - = - -- --- - _ I- / 1 I I I I�IIII111 IIIII \ \\ 52\ (Illll\1\I\\I Illlil 1/__ ���\1 \�� 32gJ j//�% -- =\ / / r _ = -____ -- - J -r �� -� T \�-/"�/---,---- u `- �r- -\ ��^_�� - o c �� Verity Engineering, D.P.C. / / III IIII (IIII III III 3 �J I IIII I) IIIII \ = -=- `=====_= --_ ----___ > / / J III IIIII II \ l l II III III v �\\\\ \ ��� MJ/ _-��\ -`-- � J - - ,�\�/I P.O. 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FT. -►� I\ l•11 / / 5 i ^ 5p• ) \r �� ��j \ ii � �1F� I.Ii ��I ) \ l STORMWATER ( \ l \ C \ \ ( o MANAGEMENT / \ , \\� �\ / h O h I / I / \,/ 3 ss ti 1, \�\� `>� ° "'ll l_ I I r 1 OF IVEw I 1 ( I J \ I 1 \M \ I l ,�4> SIGNAGE \\ v G ) \ \I to STORMWATER n I 1 M ti ti \ ( I ) z os J 3 ti ✓ 0 0 0\° 3 °' s - - �E 3 / \ J I � / � \ \JI I M rn I ( Y / \ O' s \� \ /J MANAGEMENT I \ \N 9° / / \\\�/l/� \ I ) J 1 TP #2 j \ C 503 SIGNAGE `L/ / r I 1 11 / / / \\\ \\� \ \ 1 T� /T M t � � •o / N 1 / \ / / f��� r � l l I �A / ml 5 Or- \ TPA ✓ n e w ,> i / 1' • �` \\\moo ,y .� �� � J/ ) \ / � r-.� (r 3 rh 1 n If I 1 1 / l7 III > -���1 tiI-I/I i�/� ' /I'�r - - -- -� C�- _/ ;-� / / \ \ 3 s �_ 80 / s �� � l/ ( l / y ( \ \ � y/ / II I1 \ y ti� �� ��- y ' '1-/ I /I 3ti� / � a� l ( �� �-y �7a "� � • - L-ICJ ' f� ' �,- 327 / \l ��-/ r ��''_- --•` `�'. / � I \ ___ s ll I -�- s _ �-�-�� +---ram � �•/ h � s_ s��\ 1 ti° s� .� / / I � / \ 1 � �I\ DA os4so � .� I �` ) i� ./ . y� �• � i �1 _ � �/ I/(/ � .32s= '�'�1� I _ \ OF N N/ L 6 ti-i, L X °� / 8 30 / OCS 1 ( - .� �340' _-�h /��ll / �l I 1 S '� o° L� \ / � � o �� o �• 3 s o � / r ESSIO - --^�-- i - - _ p y I , _ �j'/// //°p / ,�L 1 �o r J RIM: 319.75' BERM' /- -- -_ / �/I-_- - Cp -�L - I I I i�,�' I / /--_ �/ IT IS A VIOLATION OF NEW YORK STATE EDUCATION LAW ARTICLE 145 FOR ANY / _- I , I , _ _-3 i,l / / i - INV OUT: 316.50' (12") �j PERSON, UNLESS THEY ARE ACTING UNDER THE DIRECTION OF A LICENSED / O L-LPL •✓ I ^,- �- i 6 / / 1 / J / 1 �� /j i �- / / 1 ,� '- ° 1 , -� I-i-- +�V / 335 // //// ! �j� ° \ /� - / I I / / L PROFESSIONAL ENGINEER, TO ALTER THIS DOCUMENT IN ANY WAY. IF ALTERED, THE 1 1 h- °� - -L� -1 _ -r =_ -4 ALTERING ENGINEER SHALL AFFIX TO THE DOCUMENT THEIR SEAL, THE NOTATION 35 3 '� J LD +_hJ - - - - _ __� _� I' I L J. �O• 1h ) INV:316.00 / \- / 1 / // "ALTERED BY" FOLLOWED BY THEIR SIGNATURE, THE DATE OF SUCH ALTERATION, AND -3 J A SPECIFIC DESCRIPTION OF THE ALTERATION. / / .33 , 1 moo• �i9. 3\ 3�: �j �2 3.7�U331 3�� - \ °O_ --� -tI�� 3�• j I�/,•9'r/' y ' / //// // ( COPYRIGHT©2025 VERITY ENGINEERING D.P.C. ALL RIGHTS RESERVED. _ yG�-✓!I 6' I l L //� 12" PVC PIPE /\ sr. 2S�2E�2j-� �,1�� _ __-�-_-=_-!_ _ 'L�=- - -_ - _- -- � : / � �'' a 1 \ \ _ _--_ - --= ___ _--- °°� _-_-_- - = 3 = 3 0 / // /� i 68 LF @ 0.740 1 ! DESIGNED BY: EAS _ 5 �-: : �-- ��o� ti � / rl _ 00 -- -�C�- SWALE 326 �2 J_ O' > > // / \ 322 rn BERM ' 325:- / J / �/ / / / // //�//� �� 3 333 1 I -1 \ \ \\\ 324 - - 325 =324323 - -----__ h� _------- zee � - ii / //// ,m \l � -( / l DRAWN BY: EAS / h 323 a%.,� l / \ _-_-_--_-__-_-__- -_- 322 _ � r - h�°' w 1 \ ° _ _ 323 _ _ --SPILLWAY---�- _---- --------- _321320. 320=T"i (v CHECKED BY: AJV 11 �3p460a\ I I -\�� = /M `� ___ �� --- -------------- ---- --- ---- <� / _ c FM------- ------------ ------ - - - - -FM-- - > // // ��-_____ � � _ 1 / / APPROVED BY: AJV :�--- INGRESS/EGRESS & 3i�N° l l SCALE: AS NOTED r ._ -_- INFILTRATION BASIN 05 / UTILITY EASEMENT __ q� / / I / -\ _ INSTALL AND i SKYWARD DRIVE �I 1 // -_ t �� _ - MAINTAIN L y ( C-503 oi��J -"�O - - ° INSTALL AND MAINTAIN. \� I I 1 I / I DATE: 10/16/2024 ( �� \ \ \ 1 \ I ( l I Og'� ----- -- =_ C-503 32 320� - - - - - (t / //< ) I / / C��3 -_ SILT FENCE' - - - - - - _ 1 I ( �34g' --� ---- ----- - - - - -w - - - - - �� �W21 - - - - - - - - - - - ___ ^T---w= N° r \CONSTRUCTION ENTRANCE 1 / / _ _w- l t I ACCESS AND MAINTENANCE I - r 7-t-=--ice �/ �--- - HH L We _,_"&__---�- -- ---------------- - _ __- ���\\\\ 9�.25' I l \ J �--` EASEMENT TO BE RETAINED BY II✓- �_ 1_ ---------------------------------- OWNER OF ACCESS ROAD 1/ ¢ ���_� .�� -_-� ����- _ �-- ---i �/� �--_-_---�� �•---�--- �-�-- --� � - �.�-T--I--1���-� I I I, � ) I I I, i�l � ��\.\\\ i / N I;... � \ / / / GENERAL CONSTRUCTION SEQUENCE 4. EROSION AND SEDIMENT CONTROL MEASURES SHOWN ON THIS PLAN PER 1000 SQUARE FEET. USE WINTER RYE IF SEEDING DURING TEST PIT LOG INFILTRATION TEST LOG INFILTRATION PRACTICES: TOTAL DISTURBANCE = 11.2 ACRES 13. FINE GRADING SLOPES AND STABILIZE IMMEDIATELY. ARE THE MINIMUM REQUIRED. ADDITIONAL MEASURES MAY BE OCTOBER/NOVEMBER. PERFORMED BY: AARON VERA, P.E. **INFILTRATION TESTING HAS NOT BEEN PERFORMED DUE TO THE INFILTRATION PRACTICES SHALL NOT BE USED AS SEDIMENT TRAPS. ALL H REQUIRED, BASED ON FIELD CONDITIONS, DURING CONSTRUCTION AS DATE: 01/02/2025 EXTENT OF EARTHWORK REQUIRED. THE CONTRACTOR SHALL LIMIT CONSTRUCTION RUNOFF SHALL BE DIRECTED TO AN APPROPRIATE SEDIMENT CONTROL H PRE-CONSTRUCTION 14. INSTALL STORM MANHOLES, ROADWAY SUBBASE AND CURBING. DIRECTED BY A QUALIFIED PROFESSIONAL. PERMANENT SEEDINGS MASS GRADING TO THE AREAS REQUIRED FOR INFILTRATION DEVICE. INFILTRATION BASINS MAY ONLY HAVE FLOWS DIRECTED TO THEM ONCE THE v SEEDING SHALL CONSIST OF 1 LB PER 1000 SQUARE FEET OF SEED TP#1 (326.20') TESTING. INFILTRATION TESTING SHALL BE PERFORMED BY THE SITE HAS BEEN STABILIZED BY VEGETATION OR THE INSTALLATION OF SUBBASE. o 1. OBTAIN PLAN APPROVAL, GRADING PERMIT, ANY EASEMENTS, AND 14. INSTALL PAVEMENTS AND CONCRETE SURFACES. 5. EROSION AND SEDIMENT CONTROL METHODS SHALL COMPLY WITH THE CONTAINING AT LEAST 50% FAST SPROUTING PERENNIAL RYE GRASS 0" 4" TOPSOIL DESIGN ENGINEER PRIOR TO FURTHER SITE DISTURBANCES.** PROVIDE INLET PROTECTION AS IDENTIFIED. ~ ALL OTHER LEGAL CONTRACTS/PERMITS REQUIRED FOR NEW YORK STATE STANDARDS AND SPECIFICATIONS FOR EROSION AND AND 10% PINK CLOVER OR ALFALFA. THE SEED MIX SHALL BE 4" 42" FINE SAND z z CONSTRUCTION. 15. INSTALL LANDSCAPING. SEDIMENT CONTROL, LATEST EDITION. SPREAD BY UTILIZING A CYCLONE SEEDER, DRILL, OR CULTIPACK 42" - 120" COARSE SAND DESIGN RATE: 20 IN./HR. o CARE SHALL BE TAKEN WHEN CONSTRUCTION ACTIVITY IS NEAR INFILTRATION AREA. H SEEDER. SEED DEPTH SHALL BE FROM 1/4 TO 1/2 INCH DEEP. SEED in COMPACTION SHOULD BE AVOIDED. DE-COMPACTION PRIOR TO VEGETATING � CL 2. FLAG THE WORK LIMITS AND MARK TREES AND AREAS FOR POST-CONSTRUCTION 6. EROSION AND SEDIMENT CONTROL DEVICES SHALL BE INSPECTED MAY ALSO BE APPLIED BY APPROPRIATE HYDROSEEDING METHODS. NO SIGN OF S.H.G.W. H or PROTECTION AS REQUIRED. PERIODICALLY AND AFTER EACH RAINFALL EVENT. THE CONTRACTOR ALL SEEDED AREAS SHALL BE MULCHED WITH STRAW MULCH APPLIED v 12. ONCE CONSTRUCTION IS COMPLETED, CONTRACTOR TO PERMANENTLY SHALL REPAIR THE EROSION AND SEDIMENT CONTROL DEVICES AS AT RATE OF 2 TON/ACRE (90 LBS PER 1000 SQUARE FEET) AND TP#2 (323.80') m w a 3. HOLD PRE-CONSTRUCTION CONFERENCE AT LEAST ONE WEEK PRIOR TO STABILIZE ALL EXPOSED AREA, INCLUDING AREAS THAT HAVE NECESSARY AND AS DIRECTED BY A QUALIFIED PROFESSIONAL. ANCHORED WITH "TERRA-TACK" OR EQUIVALENT. 0" 4" TOPSOIL STARTING CONSTRUCTION. CONTRACTOR SHALL NOTIFY THE CITY OF BECOME BARE DUE TO TRAFFIC. J SARATOGA SPRINGS BUILDING DEPARTMENT, DESIGN ENGINEER, 7. ALL TEMPORARY EXPOSED FACES OF EARTH CUTS AND FILLS SHALL ROCK 4" 42" FINE SAND 42" - 120" COARSE SAND r¢i INSPECTING ENGINEER, AND THE SWPPP MONITORING PROFESSIONAL. 13. ENSURE POSITIVE DRAINAGE FLOW AWAY FROM BUILDINGS AND BE VEGETATED OR PROTECTED FROM EROSION IMMEDIATELY UPON WHEN ENCOUNTERED, SHALL BE UNDERCUT A MINIMUM OF 12 INCHES H U) ADJACENT PROPERTIES SO THAT FLOWS HAVE A POSITIVE DIRECTION COMPLETION OF EARTHWORK OR IF WORK IN THESE AREAS IS TO BE BELOW FINISHED GRADE; BACKFILL OVER THE ROCK SHALL CONSIST NO SIGN OF S.H.G.W. z 4. INSTALL TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT, INLET TOWARDS STORMWATER COLLECTION DEVICES. SUSPENDED FOR FOURTEEN (14) DAYS. PROVISIONS SHALL BE MADE OF 8 INCHES OF GRANULAR FILL AND 4 INCHES OF TOPSOIL. PROTECTION, AND CONCRETE WASHOUT. IN ORDER TO MINIMIZE THE AREA TO BE DISTURBED AND TO TP#2 (322.10') Ln 14. REMOVE ANY ACCUMULATED SEDIMENT AND ENSURE ALL STORMWATER PREVENT THE CONCENTRATION OF STORM WATER RUNOFF AND EROSION 9. IF STABILIZATION BY SEEDING CANNOT OCCUR DURING THE 0" 4" TOPSOIL N 5. STAKE OUT CLEARING LIMITS. AREAS OF DISTURBANCE SHALL NOT MANAGEMENT PRACTICES ARE FUNCTIONING CORRECTLY, AND OF DISTURBED EARTH SLOPES. RECOMMENDED SEEDING PERIODS, TOPSOIL, FILL, AND EXCAVATED EXCEED FIVE (5) ACRES AT ANY TIME. OBTAIN APPROVAL FROM DISCHARGING CLEAN RUNOFF. MATERIALS AREAS SHALL BE TEMPORARILY STABILIZED WITH 4" - 42" FINE SAND Ln 42" - 120" COARSE SAND tv CITY OF SARATOGA BUILDING DEPARTMENT TO PROCEED WITH 8. UPON COMPLETION OF GRADING OPERATIONS THE DISTURBED AREAS ANCHORED MULCH UNTIL SUCH TIME AS EFFECTIVE SEEDING CAN w N GRADING PERMIT. 15. PERFORM FINAL CLEANUP OF DEBRIS, AND REPAIR ANY AREAS THAT SHALL BE STABILIZED BY THE FOLLOWING METHODS, DEPENDING OCCUR. LEGEND m WERE AFFECTED FROM CONSTRUCTION. UPON THE CLASSIFICATION OF THE AREA AS EITHER TO RECEIVE NO SIGN OF S.H.G.W. \ o CONSTRUCTION PERMANENT OR TEMPORARY SEEDING: 10. STOCKPILE MATERIALS SHALL NOT BE LOCATED WITHIN TWENTY-FIVE - PROPERTY LINE Mo 16. REMOVAL OF OVERALL EROSION CONTROL MEASURES MAY ONLY OCCUR FEET (25' ) OF ANY DITCH, STREAM, OR OTHER SURFACE WATER TP#2 (323.50') 6. COMPLETE REMOVAL OF EXISTING STRUCTURES, CLEARING AND WHEN THE PROJECT IS SUFFICIENTLY STABILIZED AND REQUIRES SEED BED PREPARATION BODY. 0" 4" TOPSOIL 4" 42" FINE SAND GRAPHIC SCALE o GRUBBING. THE APPROVAL OF THE CITY OF SARATOGA SPRINGS BUILDING IF AREAS ARE DEEMED AS REQUIRING TOPSOIL THEN APPLY TOPSOIL ¢ w DEPARTMENT AND THE SWPPP INSPECTOR. THE CITY ENGINEERS TO A UNIFORM MINIMUM DEPTH OF FOUR INCHES (4"). TOPSOIL 11. IF CONSTRUCTION IS SUSPENDED, OR SECTIONS COMPLETED, AREAS 42" 120" COARSE SAND aC 8. STRIP AND STOCKPILE TOPSOIL, REMOVE LOOSE SOILS THAT ARE OFFICE MAY WISH TO INSPECT STORMWATER BASIN. SHALL BE FRIABLE AND LOAMY, FREE OF DEBRIS, OBJECTIONABLE SHALL BE SEEDED AND/OR MULCHED IMMEDIATELY. so o zs so ioo zoo o¢C NOT SUITABLE FOR THE PROPOSED IMPROVEMENTS. STOCKPILE WEEDS, AND STONES, AND CONTAIN NO TOXIC MATERIALS. IF NO SIGN OF S.H.G.W. WITHIN APPROVED AREA WITH ADEQUATE PROTECTION. PROCEED WITH EROSION & SEDIMENT CONTROL PLAN NOTES: TOPSOIL IS DEEMED UNNECESSARY THEN PREPARE SEED BED BY 12. COMPLY WITH THE APPLICABLE STIPULATIONS SET FORTH IN THE ROUGH GRADE TO CREATE LEVEL AREA FOR FUTURE VEHICLE PARKING SCARIFYING COMPACTED AREAS AND REMOVING DEBRIS, ROCKS, AND STORM WATER POLLUTION PREVENTION PLAN (SWPPP) PREPARED FOR p AND BUILDING SLAB. 1. ALL PROPOSED EROSION CONTROLS SHALL BE INSTALLED PRIOR TO STUMPS. SEEDBED SHALL RECEIVE THE FOLLOWING SOIL THIS PROJECT. ( IN FEET ) GRADING , EROSION AND BEGINNING OF CONSTRUCTION. FINAL LOCATION AND CONSTRUCTION AMENDMENTS: N 9. PROCEED WITH ROUGH GRADING AND IMPORTING/EXPORTING OF FILL SHALL BE REVIEWED BY A QUALIFIED PROFESSIONAL. 1 inch = 50 ft. SEDIMENT CONTROL PLAN AS REQUIRED. CONSTRUCT SEDIMENT TRAP AT LOCATION OF FOREBAY PLANNING BOARD # 20250OXX ¢ AND CREATE SWALES TO FOREBAY. 2. REMOVE EROSION CONTROLS ONLY UNDER THE AUTHORIZATION OF A 8.1. LIME TO A Ph OF 6.0 v QUALIFIED PROFESSIONAL. 8.2. FERTILIZE WITH 600 LBS OF 5-10-10 OR EQUIVALENT PER APPROVAL 1-1 N 10. POUR FOUNDATION AND ALLOW 28 DAYS FOR CURING. ACRE (14 LBS./1000 SQ. FT) THE SOIL AMENDMENTS SHALL BE 0 3. CONTRACTOR MUST PROTECT ALL SURFACE WATERS FROM SILTATION WORKED INTO THE SEED BED WITH A DISC, SPRINGTOOTH Approved under authority of a resolution adopted C 1 2 1 11. TRENCH FOR UTILITIES DURING CONSTRUCTION WITH APPROPRIATE MEASURES INCLUDING, HARROW, OR OTHER SUITABLE EQUIPMENT. by the Planning Board of the City of Saratoga Springs. � BUT NOT LIMITED TO, PLACING STRAW BALES AND SILT FENCING Chairperson 12. INSTALL STORMWATER PRACTICES. AROUND WORK. TEMPORARY SEEDING$ Date Signed: ANNUAL RYEGRASS SEED SHALL BE APPLIED AT A RATE OF 0.9 LBS 4 of 10