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HomeMy WebLinkAbout20200205 Kaydeross Ave East Conservation Sub SWPPP � The LA GROUP �, �� �.� �� �� � �� � ; ys ', �is asr-��,�o t'�66 w�ru lhel ig�nt�K�� c t�n�7 Landscape Arcl�i4ecture�9_Eng'meering P_C Stormwater Pollution Prevention Plan Prepared in accordance with NYS DEC General Permit GP-0-20-001 for: Kaydeross Avenue East Conservation Subdivision 227 Kaydeross Avenue East Saratoga Springs, NY 12866 Owner/Operator(s): 227 Kaydeross Ave. Inc. 43 Edgewater Drive Dunedin, FL 34698 Contact: Kenneth Scott SWPPP Contact(s): The LA Group, PC 40 Long Alley Saratoga Springs, NY 12866 1-518-587-8100 1-518-587-0180 SWPPP Preparation Date: April 8, 2020 Table of Contents 1.0 PERMIT OVERVIEW AND REQUIREMENTS ..................................................................... 1 1.1 PERMIT OVERVIEW...................................................................................................................... 1 2.0 SWPPP REVIEW, UPDATE....................................................................................................... 2 2.1 SWPPP REVIEW.......................................................................................................................... 2 2.2 SWPPP UPDATE.......................................................................................................................... 2 3.0 SITE ASSESSMENT, EVALUATION AND PLANNING.......................................................3 3.1 PROJECT LOCATION..................................................................................................................... 3 3.2 PRE-DEVELOPMENT CONDITIONS ................................................................................................ 3 3.3 PROJECT TYPE ............................................................................................................................. 3 3.4 PROJECT SCOPE............................................................................................................................ 3 3.S HISTORIC PRESERVATION DETERMINATION/ENDANGERED SPECIES............................................ 3 3.6 RECEIVrtvG WATERS .................................................................................................................... 3 3.7 So1Ls ........................................................................................................................................... 4 4.0 EROSION AND SEDIMENT CONTROL.................................................................................4 4.1 EROSIONAND SEDIMENT CONTROL PRACTICES........................................................................... 4 4.2 EROSION AND S�;ll1M�;N'1' CONTROL DRAWINGS........................................................................... 4 4.3 CONSTRUCTION PHASING PLAN AND SEQUENCE OF OPERATIONS................................................ 4 4.4 EROSION AND S�;ll1M�;N'1' CONTROL PRACTICE MAINTENANCE.................................................... S 4.S EROSION AND SEDIMENT CONTROL INSPECTION.......................................................................... 6 4.6 CONTRACTOR SEQUENCE FORM .................................................................................................. 7 5.0 POST CONSTRUCTION STORMWATER MANAGEMENT PRACTICES ......................7 S.1 STORMWATER MANAGEMENT CONTROLS ................................................................................... 7 5.2 GREEN INFRASTRUCTURE PRACTICES/RUNOFF REDUCTION TECHNIQUES................................... 7 5.3 POST CONSTRUCTION STORMWATER MANAGEMENT DRAWINGS ................................................ 8 5.4 HYDRAULIC AND HYDROLOGIC ANALYSIS .................................................................................. 8 S.S COMPARISON OF PRE AND POST CONSTRUCTION STORMWATER RUNOFF.................................... 9 6.0 POST CONSTRUCTION STORMWATER MAINTENANCE..............................................9 6.1 MAINTENANCE TO BE PERFORMED .............................................................................................. 9 7.0 CONSTRUCTION WASTE ...................................................................................................... 10 8.0 OFFSITE VEHICLE TRACHING........................................................................................... ll 9.0 TEMPORARY STABILIZATION FOR FROZEN CONDITIONS ..................................... ll 10.0 SPILL PREVENTION PRACTICES....................................................................................... 12 ll.0 CERTIFICATIONS.................................................................................................................... 16 12.0 DEFINITIONS............................................................................................................................ 21 Appendices A Notice of Intent (NOI) B Stormwater Management Report and Hydro CAD C Map Set — Location Map and Construction Drawing D SWPPP Inspection Forms —SWPPP Inspection Report E Other SWPPP Forms — Construction Sequence, SWPPP Plan Changes, Spill Response Form, Stormwater Management Practice Maintenance Log F SPDES General Permit GP-0-20-001 G Historic Preservation/Endangered Species Documentation H Deep Ripping and De-compaction (DEC, 2008) Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 1 .0 PERMIT OVERVIEW AND REQUIREMENTS 1.1 Permit Overview This Stormwater Pollution Prevention Plan (SWPPP) is prepared to inform the landowner and construction personnel of the measures to be implemented for controlling runoff and pollutants from the site during and after construction activities. The objective of this plan is to comply with the New York Department of Environmental Conservation (NYSDEC) State Pollutant Discharge Elimination System (SPDES) General Permit for Stormwater Discharges from Construction Activities, Permit No. GP- 0-20-001 requirements. Any material conflicts between this plan and the site plans, specification or instructions, must be brought to the attention of the design professional. The project may have other permits and it is the responsibility of the owner and contractor to know and understand all permits. The operator will be issued a bill from New York State for a one hundred and ten dollar ($110.00) annual fee for the open GP-0-20-001 permit. The operator will also be billed by New York State for a one time one hundred and ten dollar ($110.00) per acre fee for the proposed disturbed soil area listed in the NOI, and finally a one time six hundred and seventy five ($675.00) per acre fee for the proposed increased impervious area listed in the NOI. The operator is responsible to maintain onsite in a secure location that is accessible during normal working hours to an individual performing a compliance inspection, the following information: ✓ the Notice of Intent (NOI), ✓ the NYS Department of Environmental Conservation NOI Acknowledgement Letter, ✓ the SWPPP, ✓ a copy of the General Permit (included in the SWPPP), ✓ MS4 SWPPP Acceptance Form (where applicable), and ✓ All inspection reports. All post-construction stormwater management facilities must be inspected annually by a qualified professional, a report prepared and submitted to the City Engineer documenting the inspections as well as the maintenance activities that were completed during the prior year. Technical standards are detailed in the "New York State Standards and Specifications for Sediment and Erosion and Sediment Control (November 2016)", as well as illustrated on the Construction Drawings included in Appendix C. The design of post- construction stormwater control practices follow the guidance provided by "New York State Stormwater Management Design Manual." � The LA GROUP u,�:�p A.�,�,P�,� a�,, �_.��,�� Page 1 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 2.0 SWPPP REVIEW, UPDATE 2.1 SWPPP Review Applicable Federal, State, and local regulatory agencies that have jurisdiction may elect to review this SWPPP and notify the permittee in writing that the SWPPP does not meet the requirements of their regulations. If the SWPPP needs to be revised, the permittee and the site contractor will make the required modifications within seven days of such notification and submit written certification to the notifying agency that the changes have been implemented. A copy of the SWPPP will be kept available on site for review by regulatory agencies, engineers, and subcontractors. This Project is in the City of Saratoga Springs which is a regulated MS4 community, so a copy of this SWPPP was sent to the City for review. A copy of the signed MS4 Acceptance form is provided in Appendix A of this SWPPP. 2.2 SWPPP Update The permittee identified in this SWPPP shall amend the SWPPP under the following conditions: ✓ Whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharge from the site ✓ Whenever there is a change in design, construction or operation that could have an effect on the discharge of pollutants ✓ To address issues or deficiencies identified during an inspection by the qualified inspector, the Department or other regulatory authority ✓ To identify a new subcontractor that will implement any part of the SWPPP. If modifications are required to the post-stormwater management practices and the Project is within a regulated, traditional land use control MS4, the owner or operator of the Project must notify the MS4 in writing of any planned amendments or modifications to the post-construction stormwater management practice component of the SWPPP. Unless otherwise notified by the MS4, the owner or operator shall have the SWPPP amendments or modifications reviewed and accepted by the MS4 prior to commencing construction of the post-construction stormwater management practice. The SWPPP PLAN CHANGES, AUTHORIZATION, AND CHANGE CERTIFICATION form (Appendix E) must be filled out and a copy retained onsite during construction. If modifications are required to the post-stormwater management practices and the Project is not within a Regulated, Traditional Land Use Control MS4, the changes shall be documented in the SWPPP kept onsite. � The LA GROUP u,�:�p A,�,�,P�,� a�,, �_.��,�� Page 2 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 3.0 SITE ASSESSMENT, EVALUATION AND PLANNING 3.1 Project Location The Project is located on at 227 Kaydeross Avenue East, in the City of Saratoga Springs, Saratoga County, NY 12866. See Appendix C for a general site location map. 3.2 Pre-Development Conditions The site cover consists currently of ineadow/grass areas, forest, and wetland areas. 3.3 Project Type This project is considered new development, and has been designed in accordance with Chapter 4 of the NYSDEC Stormwater Management Design Manual and NYSDEC's General Permit (GP-0-20-001) for construction activities. 3.4 Project Scope The Project's intent is to create a conservation subdivision consisting of 15 lots. One lot has an existing home that will remain, and the remaining 14 lots will have new homes. The project will also include a road providing access to the new homes, driveways, a new water main and water lateral connections, septic systems, landscaping and stormwater management. The site developments described herein will result in a net increase in impervious area within the Project's watershed. 3.5 Historic Preservation Determination/Endangered Species The project is located within an archeologically sensitive area, however, based on a review by OPRHP it was determined that no properties, including archaeological and/or historic resources and listed in or eligible for the New York State and National Registers of Historic Places will be impacted by this project. A letter stating no effect is provided in Appendix G The Project will have no impact on any listed, proposed to be listed, threatened or endangered species, or a critical habitat. The NYSDEC no effect letter is provided in Appendix G. 3.6 Receiving Waters Runoff from the site discharges to an onsite wetland. � The LA GROUP u,�:�p A.�,�,P�,� a�,, �_.��,�� Page 3 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 3.7 Soils According to the Natural Resources Conservation Service (NRCS) Soil Survey, the project site area is primarily comprised of Bernardston silt loam, with some Burdett silt loam, Claverack loamy fine sand, illion silt loam and Pittstown silt loam. The hydrological soil group (HSG) classification for these soil types is C/D. Based on soil testing completed throughout the site which observed the presence of shallow depth to seasonal high groundwater and slow percolation rates Type D soils were used in storm modeling. 4.0 EROSION AND SEDIMENT CONTROL 4.1 Erosion and Sediment Control Practices Temporary Structural Practices ✓ Silt Fence ✓ Dust Control ✓ Stabilized Construction Entrance ✓ Inlet Protection Permanent Structural Controls ✓ Grading ✓ Rock Outlet Protection Temporary Stabilization Practices (including vegetative practices) ✓ Seed and mulch bare soil areas within 14 days of disturbance. Permanent Stabilization Practices (including vegetative practices) ✓ Seed and mulch all disturbed areas. Slopes that are 3:1 or steeper should receive a Rolled Erosion Control Product (RECP), sodding, and or hydro- seeding a homogenous mixture of wood fiber mulch with tackifying agent. Refer to Construction Drawings attached in Appendix C for detailed information on each practice. 4.2 Erosion and Sediment Control Drawings Erosion and Sediment Control practices are shown on Construction Drawings included in Appendix C. 4.3 Construction Phasing Plan and Sequence of Operations ✓ Temporary structural erosion controls will be installed prior to earthwork as per the attached plans. � The LA GROUP u,�:�p A.�,�,P�,� a�,, �_.��,�� Page 4 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 ✓ Areas to be undisturbed for more than 14 days will be temporarily stabilized by seeding. ✓ Disturbed areas will be reseeded and mulched immediately after final contours are re-established and no more than 14 days after the completion of construction at that site. ✓ Temporary erosion control devices will not be removed until the area served is stabilized by the growth of vegetation and the area is certified as being stabilized by the Erosion Control Superintendent. Additionally a final site inspection via the City Engineer's office will be required prior to removal of erosion and sediment controls. Construction Activities Start � Stop Sequence must include major items such as, but not limited to, clearing and grubbing, excavation and grading, utility and infrastructure installation and any other activity resulting in soil disturbance. Include installation of erosion and sediment control ractices and timin of installation. Install silt fence and construction entrance Week 1 Selective clearing and grubbing. Weeks 2-4 Construction of new water main and road. Weeks 4-14 Construction of new residences, septic systems. Weeks 14-52 Monitor/maintain erosion and sediment control measures Ongoing Remove erosion and sediment control measures upon Once final stabilization has stabilization of contributing areas been reached. 4.4 Erosion and Sediment Control Practice Maintenance ✓ Silt fence — maintenance shall be performed as needed and material removed when "bulges" develop in the silt fence. ✓ Stabilized construction entrance — entrance shall be maintained in a condition which shall prevent tracking. This may require periodic top dressing with additional aggregate. All sediment tracked onto or spilled on public rights of way shall be removed immediately. When necessary, wheels must be cleaned to remove sediment prior to entrance on public rights of way. When washing is required, it shall be done in an area stabilized with aggregate and wash water shall be directed away from streams or wetlands preferably to a broad grassed area or a stormwater pond. � The LA GROUP u,�:�p A.�,�,P�,� a�,, �_.��,�� Page 5 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 ✓ Rock outlet protection — once a riprap outlet has been installed, the maintenance needs are very low. It should be inspected after high flows for evidence of scour beneath the riprap. Repair should be immediate. ✓ Replace top-soil, mulch and seed where seeding has been disturbed. 4.5 Erosion and Sediment Control Inspection ■ It is recommended that a rain gage be installed at the site. ■ A qualified inspector shall conduct an assessment of the site prior to the commencement of construction and certify in an inspection report that the appropriate erosion and sediment controls described in the SWPPP and required by GP-0-20-001 have been adequately installed to ensure overall preparedness of the site for commencement of construction. ■ This qualified inspector must be a Licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, 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 4 hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the qualified inspector shall receive 4 hours of training every 3 years. ■ The day-to-day erosion control activities on the site will be monitored by the construction manager. The qualified inspector (as defined by the NYS DEC SPDES regulations) and his crews will make at least one inspection every seven (7) days of erosion control devices, and non-stabilized areas during construction. A maintenance inspection report will be completed by the qualified inspector after each inspection. The report form to be completed by the inspector is attached in Appendix D. Reports should be compiled and maintained on-site in the SWPPP 3-ring binder. ■ All measures will be maintained in good working order; if repair is necessary, it will be initiated within 24 hours of report. The qualified inspector shall take photographs of any needed repairs and also photograph when the repairs are completed. These photographs will be time and date stamped and attached to the weekly inspection report. ■ Seeded and planted areas will be inspected for bare spots, washouts, and healthy growth. If necessary, spot reseeding or sodding will be implemented. ■ A trained contractor will be an employee from the contracting company responsible for the implementation of the SWPPP. This person will be onsite when any soil disturbing activities are being conducted. The trained contractor must have received 4 hours of Department endorsed training in proper erosion and sediment control principles from a Soil � The LA GROUP u,�:�p A.�,�,P�,� a�,, �_.��,�� Page 6 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the qualified inspector shall receive 4 hours of training every 3 years. This trained contractor cannot conduct the regular SWPPP compliance inspections unless they meet the qualified inspector qualifications. 4.6 Contractor Sequence Form The operator shall prepare a summary of construction status using the Construction Sequence Form (included in Appendix E) once every month. Significant deviations to the sequence and reasons for those deviations (i.e. weather, subcontractor availability, etc.), shall be noted by the contractor. The schedule shall be used to record the dates for initiation of construction, implementation of erosion control measures, stabilization, etc. A copy of this table will be maintained at the construction site and updated. 5.0 POST CONSTRUCTION STORMWATER MANAGEMENT PRACTICES 5.1 Stormwater Management Controls The proposed Post Construction Stormwater Management controls on this project are listed below: ✓ Pocket Ponds (2) ✓ Wet Swales (2) 5.2 Green Infrastructure Practices/Runoff Reduction Techniques This project proposes the use of rooftop disconnection. The provided runoff reduction volume (RRv) is 0.041 ac-ft, which is greater than the minimum required RRv, 0.037 ac-ft. Soil Restoration Excessively compacted areas and areas of cut and fill on the Project Site will have soil restoration applied as needed and as specified in the table below. Attached in Appendix H is "Deep Ripping and De-compaction, (DEC 2008)." This methodology should be followed for soil restoration as specified in the table below: � The LA GROUP u,�:�p A.�,�,P�,� a�,, �_.��,�� Page 7 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Type ofSoil Disturbance Soil Restoration Requirement Comments/Examples Minimal Soil Disturbance Restoration not permitted Preservation of Natural Features Areas where topsoil is stripped Restoration not required Clearing and Crrubbing only-no change in grade HSG A&B HSG C&D Areas of cut and fill apply 6 inches of Aerate*and apply topsoil 6 inches of topsoil Heavy traffic areas onsite HSG A&B HSG C&D (especially in a zone 5-25 feet around buildings,but not within a Aerate and apply 6 Apply full Soil 5 foot perimeter around �ches of topsoil Restoration** foundation walls) Keep construction equipment from Areas where Runoff Reduction Restoration not required,but may be crossing these areas. To protect and/ar infiltration practices are applied to enhance the reduction newly installed practice from arry applied specified for appropriate practices ongoing construction activities construct a single phase operation fence area. *Aeration includes the use of machines such as tractor-drawn implements with coulters making a narrow slit in the soil,a roller with many spikes making indentations in the soil,or prongs which function like a muu-subsoiler **Per"Deep Ripping and Decopmpaction,DEC 2008" • If compost amendment is required, 2 to 4 inches of screened compost will be incorporated into the soil. • Prior to application of the deep-ripping and de-compaction, the depth to bedrock or naturally occurring hardpan should be known so that the depth of tillage be adjusted according to those restrictive depths. • Soils with a slope that exceeds 10% will not have full soil restoration with deep-ripping and de-compaction due to potential for erosion from tilled soil. • Any soil tillage (deep or shallow) will not be done on soils that are excessively wet, as this will damage the soil. • Any tillage will not be done within approximately 10' of the drip-line of any existing established trees. • Any large stones that are unearthed during tillage should be removed from the surface prior to final surface preparation and vegetation establishment. 5.3 Post Construction Stormwater Management Drawings Post construction stormwater management controls are shown on Construction Drawings included in Appendix C. 5.4 Hydraulic and Hydrologic Analysis The program utilized for quantifying stormwater runoff rates and volumes was HydroCAD software, produced by Applied Microcomputer Systems of Chocorua, � The LA GROUP u,�:�p A,�,�,P�,� a�,, �_.��,�� Page 8 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 NH. The SCS 24-hour Type II design storms for 1, 10, and 100-year frequency rainfall were analyzed. ✓ Hydrologic/hydraulic analysis for all structural components of the stormwater control system for the applicable design storms (see Appendix B). ✓ Comparison of post-development stormwater runoff conditions with pre- development conditions (see Appendix B). ✓ Dimensions, material specifications and installation details for each post- construction stormwater control practice (see Appendix B and C). 5.5 Comparison of Pre and Post Construction Stormwater Runoff Stormwater Quantity. These calculations are based on the HydroCAD analysis. Pre Develo ment Post Develo ment 10 ear, 24 hour storm Q 55.88 cfs 54.67 cfs 100 ear, 24 hour storm Qf 127.66 cfs 125.46 cfs Water Quality Volume Calculations The following was utilized to determine water quality volume: WQv= (P) (Rv)(A) 12 Where: WQv= Water Quality Volume (acre/feet) P = 90% Rainfall Event Rv = 0.05 + 0.009(I) where I is impervious cover in percent A = Subcatchment area in acres Re uired Provided Water Quality Volume (WQv) 0.232 AC FT 0.232 AC FT 6.0 POST CONSTRUCTION STORMWATER MAINTENANCE 6.1 Maintenance to be Performed 227 Kaydeross Ave. Inc. will be responsible for the continuous upkeep and maintenance of all post construction stormwater management facilities. Post-construction maintenance for this project will consist of regular inspections of permanent stormwater management facilities and steep slopes. These maintenance procedures are essential to assure continual performance of the � The LA GROUP u,�:�p A,�,�,P�,� a�,, �_.��,�� Page 9 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 stormwater management practices on your site. During the inspection and any maintenance activity to the stormwater management practices, the responsible party should fill out an inspection and maintenance log (Appendix E) to record that it was done. Annual inspections of the post construction stormwater management practices shall be completed and inspection reports shall be sent to the office of the City Engineer for their records. The City of Saratoga Springs shall approve a formal maintenance and inspection agreement in accordance with City Code Chapter 242 for stormwater management facilities to ensure the practices will be properly operated and maintained in accordance with the long term operation and maintenance plans. This agreement shall be binding on all subsequent land owners and recorded in the office of the County Clerk as a deed restriction on the property. Catch Basins (All) ■ Sediment removal with a vacuum truck should be done at least once a year, preferably after spring runoff and then in early fall, or when they are at 50% capacity, whichever comes first. ■ Any mechanical valves should be operated for inspection every two months. Stormwater Pond (Pocket Pond) ■ Should be inspected twice a year and after heavy rain storms. ■ Any erosion or scour occurring in the pond, forebay or outlets shall be repaired and re-vegetated as needed. ■ Sediment removal in the forebay shall occur every five to six years or when 50% full. ■ Provide maintenance easement and right-of-way and removable trash rack on principal spillway. ■ Regular litter control to be performed as needed. Wet Swale ■ Should be inspected twice a year and after heavy rain storms. ■ Sediment removal from the swale shall occur every five to six years or when 50% full. ■ Regular litter control to be performed as needed. 7.0 CONSTRUCTION WASTE Waste Materials: All waste materials generated during construction will be disposed at a suitable landfill, or transfer station. Hazardous Waste: The project will not be a generator of hazardous waste and it is not anticipated that any hazardous waste will be generated during construction. If there are � The LA GROUP u,�:�p A.�,�,P�,� a� , �_.��,�� Page 10 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 any materials generated, a licensed hazardous waste carrier will be contracted to dispose the hazardous material at a suitable disposal site. If hazardous materials are discovered during construction, the work will be stopped until the issue is resolved. Waste: Portable sanitary facilities will be made available to construction personnel and will be serviced regularly. 8.0 OFFSITE VEHICLE TRACKING Excavation equipment involved with the construction will remain on the project site and will not regularly egress or ingress the site. Any trucks used to bring in materials or remove materials via municipal paved roads will do so over a stabilized construction entrance. If any off-site vehicle tracking occurs, the contractor will be directed to initiate, street sweeping program in the immediate vicinity of the site. 9.0 TEMPORARY STABILIZATION FOR FROZEN CONDITIONS The following temporary stabilization measures MUST be performed when construction is occurring during winter/frozen ground conditions. The following requirements do not supercede any other requirements of this SWPPP as they apply to non-frozen ground conditions. ■ Perimeter erosion control MUST still be installed prior to earthwork disturbance as per this SWPPP. ■ Any areas that cannot be seeded to turf by October 1 or earlier will receive a temporary seeding. The temporary seeding will consist of winter rye seeded at the rate of 120 pounds per acre (2.5 pounds per 1,000 square feet) or stabilized as per the temporary stabilization for winter construction/frozen conditions. ■ Any area of disturbance that will remain inactive for a period of 14 consecutive days MUST be mulched. This includes any previously disturbed areas that are covered with snow. ■ Mulch MUST consist of loose straw applied at the rate of 2 to 3 bales (90 to 100 pounds) per thousand square feet. ■ Mulch MUST be applied uniformly over the area of bare soil or bare soil that is covered with snow. For the latter condition, mulch MUST be applied on top of snow. ■ Using a tracked vehicle, mulch MUST be crimped into the bare soil/snow. The tracked vehicle MUST be driven across the mulched areas in at least two directions to maximize crimping of mulch into the soil/snow. ■ If mulch gets blown off an area to a significant degree, the site inspector WILL require that an area be re-mulched in accordance with Items 2 through 5 above, and this area WILL be included on the inspection checklist for the next inspection. � The LA GROUP u,�:�p A.�,�,P�,� a� , �_.��,�� Page 11 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 ■ If a particular area repeatedly experiences loss of mulch due to wind, then the inspector WILL require that an alternative method be used to secure the mulch in place. Such alternatives may include the use of netting, tackifier or other methods deemed appropriate by the inspector. ■ During periods when snow is melting and/or surface soils are thawing during daytime hours, mulched areas MUST be re-tracked (crimped) as per Item 5 above at least once every seven days, more frequently if directed by the inspector. Additional mulch may be required to obtain complete coverage of an area. Biodegradable erosion control matting may be required on steeper slopes. ■ Additional stabilization measures for non-frozen ground conditions described in this SWPPP WILL be implemented at the time deemed appropriate by the inspector. During the winter season, if a site has been stabilized and soil disturbing activities have been suspended for the winter, weekly inspections can be suspended. However, monthly inspections must still be conducted. All normal weekly inspections must resume when soil disturbing activities resume. 10.0 SPILL PREVENTION PRACTICES Good Housekeeping and Material Management Practices The following good housekeeping and material management practices will be followed on site during the construction project to reduce the risk of spills or other accidental exposure of materials and substances to stormwater runoff. ■ Materials will be brought on site in the minimum quantities required. ■ All materials stored on site will be stored in a neat, orderly manner in their appropriate containers, and if possible, under a roof or other enclosure. ■ Products will be kept in their original containers with the original manufacturer's label. ■ Substances will not be mixed with one another unless recommended by the manufacturer. ■ Whenever possible, all of a product will be used up before disposal. ■ Manufacturer's recommendations for proper use and disposal will be followed. ■ The construction manager or his designee will inspect regularly to ensure proper use and disposal of materials on site. ■ The contractor shall prohibit washing of tools, equipment, and machinery in or within 100 feet of any watercourse or wetland. ■ All above grade storage tanks are to be protected from vehicle damage by temporary barriers. Inventory for Pollution Prevention Plan � The LA GROUP u,�:�p A.�,�,P�,� a� , �_.��,�� Page 12 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 The materials and substances listed below are expected to be on-site during construction. ■ Petroleum for fueling vehicles will be stored in above ground storage tanks. Tanks will either be steel with an enclosure capable of holding 110% of the storage tank volume or of a Con-Store, concrete encased type typically employed by NYSDOT. Hydraulic oil and other oils will be stored in their original containers. Concrete and asphalt will be stored in the original delivery trucks. ■ Fertilizer may be stored on site in its original container for a short period of time prior to seeding. Original containers will be safely piled on pallets or similar devices to protect from moisture. ■ Paints and other similar materials will be stored in their original containers and all empty containers will be disposed of in accordance with label directions. ■ Portable sanitary facilities, which contain chemical disinfectants (deodorants) will be located on-site, with the disinfectants held in the tank of the toilet. Hazardous Products These practices are used to reduce the risks associated with hazardous materials. ■ Products will be kept in original containers unless they are not re- sealable. ■ Original labels and material safety data sheets will be retained; they contain important product information. ■ If surplus product must be disposed of, manufacturers' or local and State recommended methods for proper disposal will be followed. Spill Prevention The following product specific practices will be followed on site. Petroleum Products: ■ Construction personnel should be made aware that emergency telephone numbers are located in this SWPPP. ■ The contractor shall immediately contact NYSDEC in the event of a spill, and shall take all appropriate steps to contain the spill, including construction of a dike around the spill and placing absorbent material over this spill. ■ The contractor shall instruct personnel that spillage of fuels, oils, and similar chemicals must be avoided and will have arranged with a qualified spill remediation company to serve the site. � The LA GROUP u,�:�p A.�,�,P�,� a� , �_.��,�� Page 13 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 ■ Fuels, oils, and chemicals will be stored in appropriate and tightly capped containers. Containers shall not be disposed of on the project site. ■ Fuels, oils, chemicals, material, equipment, and sanitary facilities will be stored/located away from trees and at least 100 feet from streams, wells, wet areas, and other environmentally sensitive sites. ■ Dispose of chemical containers and surplus chemicals off the project site in accordance with label directions. ■ Use tight connections and hoses with appropriate nozzles in all operations involving fuels, lubricating materials or chemicals. ■ Use funnels when pouring fuels, lubricating materials or chemicals. ■ Refueling and cleaning of construction equipment will take place in parking areas to provide rapid response to emergency situations. ■ All on-site vehicles will be monitored for leaks and receive regular preventative maintenance to reduce the chance of leakage. Any vehicle leaking fuel or hydraulic fuel will be immediately scheduled for repairs and use will be discontinued until repairs are made. Fertilizers: ■ Fertilizer will be stored in its original containers on pallets with water resistant coverings. ■ Proper delivery scheduling will minimize storage time. ■ Any damaged containers will be repaired immediately upon discovery and any released fertilizer recovered to the fullest extent practicable. Paints: ■ All containers will be tightly sealed and stored when not required for use. ■ Excess paint will not be discharged to the storm water system or wastewater system, but will be properly disposed of according to manufacturers' instructions or State and local regulations. Concrete Trucks: ■ Concrete trucks will be allowed to wash out or discharge surplus concrete or drum wash water only at designated locations on site. Asphalt Trucks: ■ Asphalt trucks shall not discharge surplus asphalt on the site. Spill Control Practices � The LA GROUP u,�:�p A.�,�,P�,� a� , �_.��,�� Page 14 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 In addition to the good housekeeping and material management practices discussed in the previous sections of this plan, the following practices will be followed for spill prevention and cleanup. The construction manager or site superintendent responsible for the day-to-day site operations will be the spill prevention and cleanup coordinator. He will designate at least three other site personnel who will receive spill prevention and cleanup training. These individuals will each become responsible for a particular phase of prevention and cleanup. The names of responsible spill personnel will be posted in the material storage area and in the onsite construction office or trailer. ■ Manufacturers' recommended methods for spill cleanup will be clearly posted and site personnel will be made aware of the procedures and the location of the information and cleanup supplies. Any spill in excess or suspected to be in excess of two gallons will be reported to the NYSDEC Regional Spill Response Unit. Notification to the NYSDEC (1-800-457-7362) must be completed within two hours of the discovery of the spill. ■ Materials and equipment necessary for spill cleanup will be kept in the material storage area onsite. Equipment and materials will include but not be limited to absorbent pads, brooms, dust pans, mops, rags, gloves, goggles, activated clay, sand, sawdust, and plastic and metal trash containers specifically for this purpose. ■ All spills will be cleaned up immediately after discovery. ■ The spill area will be kept well ventilated and personnel will wear appropriate protective clothing to prevent injury from contact with spilled substance. ■ Spills of toxic or hazardous material will be reported to the appropriate State or local government agency, regardless of the size � The LA GROUP u,�:�p A.�,�,P�,� a� , �_.��,�� Page 15 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 11 .0 CERTIFICATIONS Preparer Certification of Compliance with Federal, State, and Local Regulations This Stormwater Pollution Prevention Plan was prepared in accordance with the New York State Department of Environmental Conservation SPDES General Permit for Stormwater Discharges from Construction Activities (Permit No. GP-0-15-002), pursuant to Article 17, Titles 7, 8 and Article 70 of the Environmental Conservation Law. This SPDES General Permit implements the Federal Clean Water Act pertaining to stormwater discharges. Name: Doug Heller Title: Civil Engineer Signature: Date: Company Name: The LA Group, PC Owner Pollution Prevention Plan Certification 1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who are directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. 1 am aware that false statements made herein are punishable as a Class A misdemeanor pursuant to Section 210.45 of the Penal Law. 1 understand that GP-0-20-001 requires site inspections be conducted by a qualified professional once every seven (7) days and when approved in writing by the NYSDEC, disturbances of greater than five (5) acres at one time require site inspections two (2) times every seven (7) days. These inspections shall be performed by a qualified professional as defined by the General Permit. The Owner/Operator will be held financially responsible for any and all fines related to work tasks that are not specified by the Contractor(s)/Subcontractor(s) below. Name: Title: Signature: Date: Company Name: � The LA GROUP u,<:�p A.�,��P��� a� , �_.��,�� Page 16 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Contractor and Subcontractor Certification 1 hereby certify that 1 understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. 1 also understand that the owner or operator must comply with the terms and conditions of the New York State Pollutant Discharge Elimination System ("SPDES") general permit 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, 1 understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceeding. Name Title Signature Date Company Name Address City, State, Zip Phone Number 1. 2. SWPPP Components You 3. Are Responsible For 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date � The LA GROUP u,<:�p A,�,��P��� a� , �_.��,�� Page 17 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Contractor and Subcontractor Certification 1 hereby certify that 1 understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. 1 also understand that the owner or operator must comply with the terms and conditions of the New York State Pollutant Discharge Elimination System ("SPDES") general permit 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, 1 understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceeding. Name Title Signature Date Company Name Address City, State, Zip Phone Number 1. 2. SWPPP Components You 3. Are Responsible For 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date � The LA GROUP u,<:�p A,�,��P��� a� , �_.��,�� Page 18 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Contractor and Subcontractor Certification 1 hereby certify that 1 understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. 1 also understand that the owner or operator must comply with the terms and conditions of the New York State Pollutant Discharge Elimination System ("SPDES") general permit 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, 1 understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceeding. Name Title Signature Date Company Name Address City, State, Zip Phone Number 1. 2. SWPPP Components You 3. Are Responsible For 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date � The LA GROUP u,<:�p A.�,��P��� a� , �_.��,�� Page 19 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Contractor and Subcontractor Certification 1 hereby certify that 1 understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. 1 also understand that the owner or operator must comply with the terms and conditions of the New York State Pollutant Discharge Elimination System ("SPDES") general permit 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 understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceeding. Name Title Signature Date Company Name Address City, State, Zip Phone Number 1. 2. SWPPP Components You 3. Are Responsible For 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date � The LA GROUP u,<:�p A.�,��P��� a� , �_.��,�� Page 20 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 12.0 DEFINITIONS Construction Activity(ies) - means any clearing, grading, excavation, filling, demolition, or stockpiling activities that result in soil disturbance. Clearing activities can include, but are not limited to, logging equipment operation, the cutting and skidding of trees, tree removal, stump removal and/or brush removal. Construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility. Construction Phasing Plan - a plan designed to construct particular portions of an individual project at different times. Phasing is often used when a project is very large to limit the disturbance at a single time to 5 acres per phase. Erosion and Sediment Control Practices —temporary measures installed prior to construction and maintained during construction to temporarily treat any stormwater runoff. Once construction is completed and post-construction stormwater management practices are installed and the site is stabilized, the erosion and sediment control practices are removed from the site. Final Stabilization - means that all soil disturbance activities have ceased and a uniform, perennial vegetative cover with a density of eighty (80) percent over the entire pervious surface has been established; or other equivalent stabilization measures, such as permanent landscape mulches, rock rip-rap or washed/crushed stone have been applied on all disturbed areas that are not covered by permanent structures, concrete pavement. Green Infrastructure — in the context of stormwater management, the term green infrastructure includes a wide array of practices at multiple scales to manage and treat stormwater, maintain and restore natural hydrology and ecological function by infiltration, evapotranspiration, capture and reuse of stormwater, and establishment of natural vegetative features. On a regional scale, green infrastructure is the preservation and restoration of natural landscape features, such as forests, floodplains and wetlands, coupled with policies such as infill and redevelopment that reduce overall imperviousness in a watershed or ecoregion. On the local scale green infrastructure consist of site and neighborhood specific practices and runoff reduction techniques. Such practices essentially result in runoff reduction and or establishment of habitat areas with significant utilization of soils, vegetation, and engineered media rather than traditional hardscape collection, conveyance and storage structures. Some examples include green roofs, trees and tree boxes, pervious pavement, rain gardens, vegetated swales, planters, reforestation and protection and enhancement of riparian buffers and floodplains. Impervious Area (Cover) - means all impermeable surfaces that cannot effectively infiltrate rainfall. This includes paved, concrete and gravel surfaces (i.e. parking lots, driveways, roads, runways, and sidewalks); building rooftops, and miscellaneous impermeable structures such as patios, pools, and sheds. � The LA GROUP u,<:�p A.�,��P��� a� , �_.��,�� Page 21 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Municipal Separate Storm Sewer (MS4) — a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains): i. Owned or operated by a state, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the CWA that discharges to surface waters of the State. ii. Designed or used for collecting or conveying stormwater iii. Which is not a combined sewer iv. Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2. Notice of Intent — a standardized format notification sent to the NYSDEC to inform them of the proposed activity to be sent after the SWPPP has been completed. Owner or Operator — means the person, persons or legal entity which owns or leases the property on which the construction activity is occurring; and/or an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications. Post-Construction Stormwater Management Practices — permanent devices constructed or installed onsite to treat stormwater from a site when construction is com pleted. Qualified Inspector — means 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, or other Department 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 Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department 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. Qualified Professional — means a person that is knowledgeable in the principles and practices of stormwater management and treatment, such as a licensed Professional � The LA GROUP u,<:�p A.�,��P��� a� , �_.��,�� Page 22 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Engineer, Registered Landscape Architect or other Department endorsed individual(s). Individuals preparing SWPPPs that require the post-construction stormwater management practice 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 ot practice in the State of New York. Regulated, Traditional Land Use Control MS4 - means a city, town, or village with land use control authority that is required to gain coverage under New York State DEC's SPDES General Permit for Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (MS4s). Sequence of Operations — the individual steps and their specific order which are undertaken in order to construct a project or a given phase of a project from beginning to end. (i.e. clearing, grading, foundation work, landscaping, etc.) State Pollutant Discharge Elimination System (SPDES) — means the system established pursuant to Article 17 of the Environmental Conservation Law (ECL) and 6 NYCRR Part 750 for issuance of permits authorizing discharges to the waters of the state. Stormwater Pollution Prevention Plan (SWPPP) - a report that is compiled providing detailed information about the proposed activity and the specifics to how the stormwater will be managed during construction and after construction is completed. Surface Waters of the State - shall be construed to include lakes, bays, sounds, 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 all other bodies of surface water, natural or artificial, inland or coastal, fresh or salt, public or private (except those private waters that do not combine or effect a junction with natural surface or underground waters), which are wholly or partially within or bordering the state or within its jurisdiction. Waters of the state are further defined in 6 NYCRR Parts 800-941. Temporary Stabilization — means that exposed soil has been covered with material(s) as set forth in the technical standard, New York Standards and Specifications for Erosion and Sediment Control, to prevent the exposed soil from eroding. The materials can include, but are not limited to, mulch, seed and mulch, and erosion control mats (e.g. jute twisted yarn, excelsior wood fiber mats). Trained Contractor — means an employee from a contracting (construction) company responsible for the day to day implementation of the SWPPP. The trained contractor must have received 4 hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other � The LA GROUP u,<:�p A.�,��P��� a� , �_.��,�� Page 23 Stormwater Pollution Prevention Plan Kaydeross Avenue East Conservation Subdivision The LA Group Project # 2016109 Department endorsed entity. After receiving the initial training, the qualified inspector shall receive 4 hours of training every 3 years. It can also mean an employee from the contracting (construction) company that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, 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 4 hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. G:\Proj-2018�2,018135_Skidmore_Flex Building�2,018135Enviro\02SWPPP�2,018135_SWPPP.docx ` The LA GROUP u,<:�p A.�,��P��� a� , �_.��,�� Page 24 Appendix A Notice of Intent (NOI) NOI for coverage under Stormwater General Permit for Construction Activity version 1.23 (Submission#: HNY-DZF4-HR8NR,version 1) Details Form Alias Kaydeross Ave East NOI for coverage under Stormwater General Permit for Construction Activity Form Started 3/21/2020 8:55 PM by Kara Tedford Form Submitted Submission# HNY-DZF4-HR8NR Submission Reason New Status D raft Alternate ID: Form Input Owner/Operator Information Owner/Operator Name(Company/Private Owner/Municipality/Agency/Institution,etc.) 227 Kaydeross Ave. Inc. Owner/Operator Contact Person Last Name(NOT CONSULTANT) Scott Owner/Operator Contact Person First Name Kenneth Owner/Operator Mailing Address 43 Edgewater Drive City Dunedin State FI Zip 34698 Phone 727-608-3083 Email NONE PROVIDED Federal Tax ID NONE PROVIDED Project Location Project/Site Name Kaydeross Avenue East Conservation Subdivision 4/8/2020 5:2534 PM Page 1 of 10 Street Address(Not P.O.Box) 227 Kaydeross Avenue Side of Street West City/TownNillage(THAT ISSUES BUILDING PERMIT) Cityof Saratoga Springs State NY Zip 12866 County SARATOGA DEC Region 5 Name of Nearest Cross Street Crescent Avenue Distance to Nearest Cross Street(Feet) 1500 Project In Relation to Cross Street South Tax Map Numbers Section-Block-Parcel 192.-1-10/192.-1-39 Tax Map Numbers NONE PROVIDED 1.Coordinates Provide the Geographic Coordinates for the project site.The two methods are: -Navigate to the project location on the map(below)and click to place a marker and obtain the XYcoordinates. -The"Find Me"button will provide the lat/long for the person filling out this form.Then pan the map to the correct location and click the map to place a marker and obtain the XYcoordinates. Navigate to your location and click on the map to get the X,Y coordinates 43.0505512,-73.75950139999999 Project Details 2.What is the nature of this project? New Construction 3.Select the predominant land use for both pre and post development conditions. Pre-Development Existing Landuse Single Family Home Post-Development Future Land Use Single FamilySubdivision 3a.ff Single Family Subdivision was selected in question 3,enter the number of subdivision lots. 15 4. In accordance with the larger common plan of development or sale,enter the total project site acreage,the acreage to be disturbed and the future impervious area(acreage)within the disturbed area. 4/8/2020 5:2534 PM Page 2 of 10 ***ROUND TO THE NEAREST TENTH OF AN ACRE.*** Total Site Area(acres) 78.87 Total Area to be Disturbed(acres) 14 Existing Impervious Area to be Disturbed(acres) 0 Future Impervious Area�thin Disturbed Area(acres) 2 5.Do you plan to disturb more than 5 acres of soil at any one time? No 6. Indicate the percentage(%)of each Hydrologic Soil Group(HSG)at the site. A(%) 0 B(%) � C�%� � D(%) 100 7.Is this a phased project? Yes 8.Enter the planned start and end dates of the disturbance activities. Start Date 9/1/2020 End Date 11/1/2021 9.Identify the nearest surFace waterbody(ies)to which construction site runoff will discharge. Onsite Wetland 9a.Type of waterbody identified in question 9? Wetland/Federal Jurisdiction On Site(Answer 9b) Other Waterbody Type Off Site Description ACOE Wetland 10.Has the surFace waterbody(ies in question 9 been identified as a 303(d)segment in Appendix E of GP-0-20-001? No 11.Is this project located in one of the Watersheds identified in Appendix C of GP-0-20-001? No 12.Is the project located in one of the watershed areas associated with AA and AA-S classified waters? No ff No,skip question 13. 13.Does this construction activity disturb land with no existing impervious cover and where the Soil Slope Phase is identified as an E or F on the USDA Soil Survey? No 4/8/2020 5:2534 PM Page 3 of 10 ff Yes,what is the acreage to be disturbed? NONE PROVIDED 14.�II the project disturb soils within a State regulated wetland or the protected 100 foot adjacent area? No 15.Does the site runoff enter a separate storm sewer system(including roadside drains,swales,ditches,culverts, etc)? Yes 16.What is the name of the municipality/entity that owns the separate storm sewer system? Cityof Saratoga Springs 17.Does any runoff from the site enter a sewer classified as a Combined Sewer? No 18.�II future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law? No 19.Is this property owned by a state authority,state agency,federal government or local government? No 20.Is this a remediation project being done under a Department approved work plan?(i.e.CERCLA,RCRA, Voluntary Cleanup Agreement,etc.) No Required SWPPP Components 21.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 22.Does this construction activity require the development of a SWPPP that includes the post-construction stormwater management practice component(i.e.Runoff Reduction,Water Quality and Quantity Control practices/techniques)? Yes ff you answered No in question 22,skip question 23 and the Post-construction Criteria and Post-construction SMP Identification sections. 23.Has the post-construction stormwater management practice component of the SWPPP been developed in conformance with the current NYS Stormwater Management Design Manual? Yes 24.The Stormwater Pollution Prevention Plan(SWPPP)was prepared by: Professional Engineer(P.E.) SWPPP Preparer The LA Group Contact Name(Last,Space,First) Heller pouglas Mailing Address 40 Long Alley City Saratoga Springs State NY Zip 12866 4/8/2020 5:2534 PM Page 4 of 10 Phone 518-587-8100 Email d heller@thelagroup.com 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)Scan the signed form 4)Upload the scanned document Download SWPPP Preparer Certification Form Please upload the SWPPP Preparer Certification NONE PROVIDED Comment NONE PROVIDED Erosion &Sediment Control Criteria 25.Has a construction sequence schedule for the planned management practices been prepared? Yes 26.Select all of the erosion and sediment control practices that will be employed on the project site: Temporary Structural Level Spreader Silt Fence Stabilized Construction Entrance Storm Drain Inlet Protection Biotechnical None Vegetative Measures Seeding Sodding Mulching Topsoi li ng Permanent Structural Land Grading Rock Outlet Protection Other NONE PROVIDED Post-Construction Criteria *IMPORTANT: Completion of Questions 27-39 is not required if response to Question 22 is No. 27.Identify all site planning practices that were used to prepare the final site plan/layout for the project. Preservation of Undisturbed Area Reduction of Clearing and Grading Locating Development in Less Sensitive Areas 27a.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(2010 version). 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). 4/8/2020 5:2534 PM Page 5 of 10 28.Provide the total Water Quality Volume(WQv)required for this project(based on final site plan/layout).(Acre-feet) 0.232 29.Post-construction SMP Identification Use the Post-construction SMP Identification section to identify the RR techniques(Area Reduction),RR techniques(Volume Reduction)and Standard SMPs with RRv Capacity that were used to reduce the Total WQv Required (#28). Identify the SMPs to be used by providing the total impervious area that contributes runoff to each technique/practice selected. For the Area Reduction Techniques,provide the total contributing area(includes pervious area)and, if applicable,the total impervious area that contributes runoff to the technique/practice. Note: Redevelopment projects shall use the Post-Construction SMP Identification section to identifythe SMPs used to treat and/or reduce the WQv required. If runoff reduction techniques will not be used to reduce the required WQv,skip to question 33a after identifying the SMPs. 30.Indicate the Total RRv provided by the RR techniques(Areallolume Reduction)and Standard SMPs with RRv capacity identified in question 29.(acre-feet) 0.041 31.Is the Total RRv provided(#30)greater than or equal to the total WQv required(#28)? No ff Yes,go to question 36.ff No,go to question 32. 32.Provide the Minimum RRv required based on HSG.[Minimum RRv Required=(P)(0.95)(Ai)/12,Ai=(s)(Aic)] (acre-feet) 0.037 32a.Is the Total RRv provided(#30)greater than or equal to the Minimum RRv Required(#32)? Yes ff Yes,go to question 33. Note: Use the space provided in question#39 to summarize the specific site limitations and justification for not reducing 100% of WQv required (#28).A detailed evaluation of the specific site limitations and justification for not reducing 100%of the WQv required (#28)must also be included in the SWPPP. If No,sizing criteria has not been met;therefore,NOI can not be processed.SWPPP preparer must modify design to meet sizing criteria. 33.SMPs Use the Post-construction SMP Identification section to identifythe Standard SMPs and, if applicable,the Alternative SMPs to be used to treat the remaining total WQv(=Total WQv Required in#28-Total RRv Provided in#30). Also,provide the total impervious area that contributes runoff to each practice selected. NOTE: Use the Post-construction SMP Identification section to identifythe SMPs used on Redevelopment projects. 33a.Indicate the Total WQv provided(i.e.WQv treated)by the SMPs identified in question#33 and Standard SMPs with RRv Capacity identified in question#29.(acre-feet) 0.191 Note: For the standard SMPs with RRv capacity,the WQv provided by each practice=the WQv calculated using the contributing drainage area to the practice-provided by the practice.(See Table 3.5 in Design Manual) 34.Provide the sum of the Total RRv provided(#30)and the WQv provided(#33a). 0.232 35.Is the sum of the RRv provided(#30)and the WQv provided(#33a)greater than or equal to the total WQv required (#28)? Yes If Yes,go to question 36. If No,sizing criteria has not been met;therefore,NOI can not be processed.SWPPP preparer must modify design to meet sizing criteria. 36.Provide the total Channel Protection Storage Volume(CPv required and provided or select waiver(#36a),if 4/8/2020 5:2534 PM Page 6 of 10 applicable. CPv Required(acre-feet) 0.04 CPv Provided(acre-feet) 0.04 36a.The need to provide channel protection has been waived because: NONE PROVIDED 37.Provide the Overbank Flood(Qp)and Extreme Flood((�control criteria or select waiver(#37a),if applicable. Overbank Flood Control Criteria(Qp) Pre-Development(CFS) 55.88 Post-Development(CFS) 54.62 Total Extreme Flood Control Criteria((� Pre-Development(CFS) 127.66 Post-Development(CFS) 125.34 37a.The need to meet the Qp and Qf criteria has been waived because: NONE PROVIDED 38.Has a long term Operation and Maintenance Plan for the post-construction stormwater management practice(s) been developed? Yes ff Yes,Identify the entity responsible for the long term Operation and Maintenance 227 Kaydeross Avenue East 39.Use this space to summarize the specific site limitations and justification for not reducing 100% of WQv required (#28).(See question#32a)This space can also be used for other pertinent project information. The site has shallow depth to groundwater. Post-Construction SMP Identification Runoff Reduction(RR)Techniques,Standard Stormwater Management Practices(SMPs)and Alternative SMPs Identify the Post-construction SMPs to be used by providing the total impervious area that contributes runoff to each technique/practice selected.For the Area Reduction Techniques,provide the total contributing area(includes pervious area) and, if applicable,the total impervious area that contributes runoff to the technique/practice. RR Techniques(Area Reduction) Round to the nearest tenth Total Contributing Acres for Conservation of Natural Area(RR-1) NONE PROVIDED Total Contributing Impervious Acres for Conservation of Natural Area(RR-1) NONE PROVIDED Total Contributing Acres for SheetFlow to Riparian Buffers/Filter Strips(RR-2) NONE PROVIDED Total Contributing Impervious Acres for Sheetflow to Riparian Buffers/Filter Strips(RR-2) NONE PROVIDED 4/8/2020 5:2534 PM Page 7 of 10 Total Contributing Acres for Tree Planting/Tree Pit(RR-3) NONE PROVIDED Total Contributing Impervious Acres for Tree Planting/Tree Pit(RR-3) NONE PROVIDED Total Contributing Acres for Disconnection of Rooftop Runoff(RR-4) NONE PROVIDED RR Techniques(Volume Reduction) Total Contributing Impervious Acres for Disconnection of Rooftop Runoff(RR�) 0.45 Total Contributing Impervious Acres for Vegetated Swale(RR�) NONE PROVIDED Total Contributing Impervious Acres for Rain Garden(RR-6) NONE PROVIDED Total Contributing Impervious Acres for Stormwater Planter(RR-7) NONE PROVIDED Total Contributing Impervious Acres for Rain Barrel/Cistern(RR-8) NONE PROVIDED Total Contributing Impervious Acres for Porous Pavement(RR-9) NONE PROVIDED Total Contributing Impervious Acres for Green Roof(RR-10) NONE PROVIDED Standard SMPs with RRv Capacity Total Contributing Impervious Acres for Infiltration Trench(I-1) NONE PROVIDED Total Contributing Impervious Acres for Infiltration Basin(I-2) NONE PROVIDED Total Contributing Impervious Acres for Dry Well(I-3) NONE PROVIDED Total Contributing Impervious Acres for Underground Infiltration System(I-4) NONE PROVIDED Total Contributing Impervious Acres for Bioretention(F-5) NONE PROVIDED Total Contributing Impervious Acres for Dry Swale(O-1) NONE PROVIDED Standard SMPs Total Contributing Impervious Acres for Micropool Extended Detention(P-1) NONE PROVIDED Total Contributing Impervious Acres for Wet Pond(P-2) NONE PROVIDED Total Contributing Impervious Acres for Wet Extended Detention(P-3) NONE PROVIDED 4/8/2020 5:2534 PM Page 8 of 10 Total Contributing Impervious Acres for Multiple Pond System(P-4) NONE PROVIDED Total Contributing Impervious Acres for Pocket Pond(P�) 1.4 Total Contributing Impervious Acres for SurFace Sand Filter(F-1) NONE PROVIDED Total Contributing Impervious Acres for Underground Sand Filter(F-2) NONE PROVIDED Total Contributing Impervious Acres for Perimeter Sand Filter(F-3) NONE PROVIDED Total Contributing Impervious Acres for Organic Filter(F-4) NONE PROVIDED Total Contributing Impervious Acres for Shallow Wetland(W-1) NONE PROVIDED Total Contributing Impervious Acres for Extended Detention Wetland(W-2) NONE PROVIDED Total Contributing Impervious Acres for Pond/Wetland System(W-3) NONE PROVIDED Total Contributing Impervious Acres for Pocket Wetland(W�) NONE PROVIDED Total Contributing Impervious Acres for Wet Swale(O-2) 0.14 Alternative SMPs(DO NOT INCLUDE PRACTICES BEING USED FOR PRETREATMENT ONLI� Total Contributing Impervious Area for Hydrodynamic NONE PROVIDED Total Contributing Impervious Area for Wet Vault NONE PROVIDED Total Contributing Impervious Area for Media Filter NONE PROVIDED "Other"Alternative SMP? NONE PROVIDED Total Contributing Impervious Area for"Other" NONE PROVIDED Provide the name and manufaturer of the alternative SMPs(i.e.proprietary practice(s))being used for WQv treatment. Note: Redevelopment projects which do not use RR techniques,shall use questions 28,29,33 and 33a to provide SMPs used,total WQv required and total WQv provided for the project. Manufacturer of Alternative SMP NONE PROVIDED Name of Alternative SMP NONE PROVIDED Other Permits 4/8/2020 5:2534 PM Page 9 of 10 40.Identify other DEC permits,existing and new,that are required for this project/facility. None ff SPDES Multi-Sector GP,then give permit ID NONE PROVIDED ff Other,then identify NONE PROVIDED 41.Does this project require a US Army Corps of Engineers Wetland Permit? Yes ff"Yes,"then indicate Size of Impact,in acres,to the nearest tenth .1 42.ff this NOI is being submitted for the purpose of continuing or transferring coverage under a general permit for stormwater runoff from construction activities,please indicate the former SPDES number assigned. NONE PROVIDED MS4 SWPPP Acceptance 43.Is this project subject to the requirements of a regulated,traditional land use control MS4? Yes-Please attach the MS4 Acceptance form below ff No,skip question 44 44.Has the"MS4 SWPPP Acceptance"form been signed by the principal executive officer or ranking elected official and submitted along with this NOI? No MS4 SWPPP Acceptance Form Download Download form from the link below.Complete,sign,and upload. MS4 SWPPP Acceptance Form MS4 Acceptance Form Upload NONE PROVIDED Comment NONE PROVIDED Owner/Operator Certification Owner/Operator Certification Form Download Download the certification form byclicking the link below.Complete,sign,scan,and upload the form. Owner/Operator Certification Form(PDF.45KB� Upload Owner/Operator Certification Form NONE PROVIDED Comment NONE PROVIDED 4/8/2020 5:2534 PM Page 10 of 10 �� New York State Department of Environmental Conservation Division of Water � 625 Broadway, 4th Floor � Albany, New York 12233-3505 MS4 Stormwater Pollution Prevention Plan (SWPPP) Acceptance Form for Construcfion Activities Seeldng Authorizafion Under SPDES General Permit *(NOTE: Attach Completed Form to Notice Of Intent and Submit to Address Above) I. Project Owner/Operator Information 1. Owner/OperatorName: 227 Kayd@I'OSS AV@. IfIC. z. con�tPerson: Kenneth Scott 3. sr�eet aaaress: 43 Edgewater Drive 4. ciryisr�teizip: Dunedin, FL 34698 II. Project Site Informafion s.Pro�e�r�s�te N�e: Kaydeross Avenue East Conservation Subdivision 6. Street Address: 227 Kaydel'oss Ave �. c��yisr�teiz�p: Saratoga Springs, NY 12866 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 ii.N�e ofMs4: City of Saratoga Springs 12.MS4 SPDES Permit Identification Number:NYR20A 2�6 13. ContactPerson: AI FIICk i4. sr�eet aaa�ess: City Hall, 474 Broadway is. c��yisr�teiz�p: Saratoga Springs, NY 12866 16.Tele hone Ivumber: 518-587-3550 (NYS DEC-MS4 SWPPP Acceptance Form-January 2010) Page 1 of 2 MS4 SWPPP Acceptance Form- continued V.Cerfif'ication Statement-MS4 Off'icial(principal executive off'icer or ranldng elected off'icial)or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan(SWPPP)for the construction project idenrified in quesrion 5 has been reviewed and meets the substanrive requirements in the SPDES General Permit For Stormwater Discharges from Municipal Separate Storm Sewer Systems(MS4s). 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 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.Addifional Information Page 2 of 2 Appendix B Stormwater Management Report Hydro CAD � , � „ .�� �� r��.� .� � The LA GRDUP � ���� ,��� �, ��� a��-��,�� i,��,6 w�rU lhel ig�nnK�� �:i�n�7 Lzndsrape Architecture�.Yngineering P.C. Stormwater Management Report for: Kaydeross Avenue East Conservation Subdivision 227 Kaydeross Avenue East Saratoga Springs, NY 12866 Owner/Operator(s): 227 Kaydeross Ave. Inc. 43 Edgewater Drive Dunedin, FL 34698 SWM Report Contact(s): The LA Group, PC 40 Long Alley Saratoga Springs, NY 12866 1-518-587-8100 Project No. 201258 Preparation Date: 4/8/2020 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 Table of Contents Contents 1.0 INTRODUCTION..............................................................................................................................................4 2.0 PROJECT DESCRIPTION..............................................................................................................................4 2.1 SITELOCATION................................................................................................................................................4 2.2 PROJECT DESCRIPTION.....................................................................................................................................4 2.3 SOIL CONDITIONS/SOIL TESTING.....................................................................................................................4 2.4 CURVE NUMBERS AND RAINFALL DATA..........................................................................................................5 3.0 EXISTING CONDITIONS...............................................................................................................................5 4.0 PROPOSED CONDITIONS.............................................................................................................................6 5.0 NYSDEC DESIGN CRITERIA........................................................................................................................6 5.1 SITE PLANNING TO PRESERVE NATURAL FEATURES........................................................................................7 5.2 WATER QUALITY VOLUME(WQV�..................................................................................................................8 5.3 RUNOFF REDUCTION VOLUME(RRV�..............................................................................................................9 5.4 CHANNEL PROTECTION VOLUME(CPV� ........................................................................................................10 5.5 OVERBANK FLOOD(QP�AND EXTREME FLOOD(QF�ATTENUATION.............................................................10 6.0 PROPOSED STORMWATER FACILITIES ...............................................................................................11 6.1 PRETREATMENT.............................................................................................................................................11 6.2 TREATMENT...................................................................................................................................................11 7.0 POST-CONSTRUCTION MAINTENANCE REQUIREMENTS.............................................................11 8.0 REFERENCES.................................................................................................................................................12 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 Attachment A SoilInvestigations Soil Survey Natural Resource Map B Existing Conditions Watershed Map and HydroCAD Calculations C Proposed Conditions Watershed Map and HydroCAD Calculations D Storm Data Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 1.0 INTRODUCTION The following is a Stormwater Management Report (SWM Report) developed for the Operator, 227 Kaydeross Ave. Inc., for the Kaydeross Avenue East Conservation Subdivision Project, herein referred to as the "Project." It is prepared in accordance with the New York State Department of Environmental Conservation (NYSDEC) Stormwater Management Design Manual (SWMDM), dated January, 2015. The Project has been designed in accordance with Chapter 4 of the NYSDEC SWMDM and NYSDEC's General Permit GP-0-20-001 for construction activities. All new impervious area was designed in accordance with Chapter 4 of the SWMDM The Project Site represents the area that will be disturbed as a result of the Project. Stormwater calculations were performed utilizing widely accepted engineering methodologies, including TR-55, and the stormwater modeling computer program HydroCAD (version 10.00) produced by HydroCAD Software Solutions, LLC. 2.0 PROJECT DESCRIPTION 21 Site Location The Project is located on Kaydeross Avenue East, in the City of Saratoga Springs, Saratoga County, NY 12866. Access to the site is off of Kaydeross Avenue East, approximately 1,500 feet south of the intersection of Kaydeross Avenue and Crescent Avenue. 2.2 Project Description The intent of the Project is to create a conservation subdivision consisting of 15 lots. There is one lot that will be part of the subdivision that has an existing home that will remain. A new road to access the subdivision lots is planned, as well as driveways, a new water main and water services, septic systems, landscaping and stormwater management. The site developments described herein will results in a net increase in impervious area within the Project's watershed. The project is considered new development and was designed in accordance with Chapter 4 of the SWMDM. The Project Site represents the area that will be disturbed as a result of the Project. 2.3 Soil Conditions/Soil Testing According to the Natural Resources Conservation Service (NRCS) Soil Survey, primarily comprised of Bernardston silt loam, with some Burdett silt loam, Claverack loamy fine sand, illion silt loam and Pittstown silt loam. � The LA GROUP � ., �A � P� �M.� „FP���,y��� 4 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 The hydrological soil group (HSG) classification for these soil types is C/D. Based on soil testing completed throughout the site which observed the presence of shallow depth to seasonal high groundwater and slow percolation rates Type D soils were used in storm modeling. 2.4 Curve Numbers and Rainfall Data The surface cover for the project area is primarily grassed areas and forest. The curve numbers utilized in the modeling were assigned based on cover type and HSG soil classification. The design storms used for the pre-development versus post-development comparison were the 1, 10, and 100-year, 24-hour duration, SCS Type II events. The rainfall amounts for these storms are 2.15, 3.75, and 6.20 inches, respectively. 3.0 EXISTING CONDITIONS The Project area's existing condition, for which this stormwater management plan is based, consists of an existing home, forest, grass areas, and wetland areas. Under the watershed's Existing Condition, the watershed is divided into three subcatchments, which flow to three analysis points. Runoff from the northwest portion of the project area is conveyed northwest towards an existing low area off site (Analysis Point 1). The middle section of the site drains to an onsite wetland which discharges to the northeast (Analysis Point 2). The remaining portion of the site to the southeast drains to existing roadside ditches (Analysis Point 3). There are existing NYSDEC wetlands to the southeast of the project site. All development has been located greater than 100' from these wetlands. Table 3-1 below provides a summary of the existing conditions peak discharge rates for the Project's watershed. Table 3-1 Existin Conditions Peak Dischar e Rates Analysis Point AP-1 AP-2 AP-3 Design Storm (cfs) (cfs) (cfs) 10-Year 6.21 3 9.5 8 10.09 100-Year 14.10 90.77 22.79 Refer to Attachment B for more information on the existing conditions watershed modeling. � The LA GROUP L .s .eA I e� _rc+xl � ieeiinyl'.C. 5 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 4.0 PROPOSED CONDITIONS Under the watershed's Proposed Condition, stormwater will continue to discharge to the same three analysis points described in the existing conditions. To meet NYSDEC requirements (see Section 5.0 NYSDEC Design Criteria of this report) two stormwater ponds have been designed to manage and treat stormwater runoff, as well as two wet swales, and rooftop disconnection. Table 4-1 Existin Conditions vs. Pro osed Conditions Peak Dischar e Rates Analysis AP-1 AP-2 AP-3 Point Condition Existin Pro osed Existin Pro osed Existin Pro osed Design Storm (cfs) (cfs) (cfs) (cfs) (cfs) (cfs) 10-Year 621 5.75 39.58 39.16 10.09 9.76 100-Year 14.10 12.78 90.77 90.54 22.79 22.14 Refer to Attachment C for more information on the proposed conditions watershed modeling. 5.0 NYSDEC DESIGN CRITERIA The NYSDEC SWMDM, dated January 2015 has been utilized to develop the stormwater management plan. The SWMDM includes a five-step process that involves site planning and stormwater management practice selection. The five steps include; • Site planning to preserve natural features and reduce impervious cover, • Calculation of the Water Quality Volume (WQv) for the Site, • Incorporation of green infrastructure techniques and standard SMPs with Runoff Reduction Volume (RRv) capacity, • Use of standard SMPs where applicable, to treat the portion of WQv not addressed by green infrastructure techniques and standard SMPs with RRv capacity, and • Design of volume and peak rate control (where required) The approach of the stormwater management plan was to address the stormwater requirements separately. The five steps were reduced to Site Planning to Preserve Natural Features, Water Quality Volume, Runoff Reduction Volume, Channel Protection Volume, and Overbank Flood and Extreme Storm Attenuation, as discussed in the following sections. Attachment D of this report contains detailed calculations for determining and summarizing the required and provided volumes for Water Quality and Runoff Reduction. In general, the � The LA GROUP L .s .eA I e� _rc+xl � ieeiinyl'.C. 6 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 required design criteria (WQv and RRv) were calculated for all areas where site disturbance or green infrastructure techniques are proposed. 51 Site Planning to Preserve Natural Features Within Chapter 3 of the SWMDM, Table 3.1 Green Infrastructure Planning General Categories and Specific Practices includes a list of planning practices utilized in the planning and design of a project. There are two categories, Preservation of Natural Resources and Reduction of Impervious Cover. Preservation of Natural Resources includes: • Preservation of Undisturbed Areas • Preservation of Buffers • Reduction of Clearing and Grading • Locating Development in Less Sensitive Areas • Open Space Design • Soil Restoration Reduction of Impervious Cover includes: • Roadway Reduction • Sidewalk Reduction • Driveway Reduction • Cul-de-sac Reduction • Building Footprint Reduction • Parking Reduction A Natural Resource Map for Green Infrastructure Planning has been developed which indicates natural resource areas and critical environmental areas to be protected (where feasible). As required in Section 3.6 of the SWMDM, the map includes (where applicable): • Jurisdictional Wetlands o An ACOE wetland will be affected by the project (0.06 ac of disturbance). The work is covered under ACOE Nationwide Permit 14. • Waterways o No waterways are impacted by the Project. • Wetland Adjacent Area o Wetland areas adj acent to the Proj ect will not be impacted. • Floodplains o The developed portion of the project is not located within the 100-year floodplain. • Forest, vegetative cover � The LA GROUP L .s �eA I e� _rc+xl � ieeiinyl'.C. 7 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 o The Project has been designed to minimize effects on forested areas. • Topography/Steep slopes o The Project Site does include areas with steep slopes, however, the development will not impact these slopes. • Existing soils, including hydrologic soil groups and soil erodibility o See Section 2.3 of this Report. • Drainage Patterns o See Section 3.0 of this Report. • Bedrock/Significant geological features o See Section 2.3 of this Report. The Natural Resource Plan indicates the areas to be avoided and depicts the area most suitable for development. 5.2 Water Quality Volume (WQv) The Water Quality Volume (WQv) requirement is designed to improve water quality sizing to capture and treat 90% of the average annual stormwater runoff volumes. The WQv is directly related to the amount of impervious cover created at a site. The following equation is used to determine the water quality storage volume. WQv = P Rv A 12 Where: WQv = Water quality volume (acre/feet) P = 90%Rainfall Event(1.15" for Saratoga Springs) Rv = 0.05 + 0.009(I) where I is percent impervious cover A = Site area in acres The required WQv will be treated via two pocket ponds (SMP-1, SMP-2), rooftop disconnection (SMP-la, SMP-2a, and SMP-3), and two wet swales (SMP-4, and SMP-5) designed in accordance with the SWMDM. The rooftop disconnection provided at SMP-la is within the same watershed as the pocket pond SMP-1. The calculations take into consideration that hydrologically this runoff goes to SMP-1, however, the WQv for SMP-1 was calculated by deducting the impervious area from the roofs within the contributing watershed (SMP-la). The same method was used for SMP-2 / SMP-2a in order to not double count the treatment of the rooftop runoff within the pond WQv calculations. Refer to Table 5-1 for a summary of the required versus provided water quality volumes for the Proj ect. � The LA GROUP L .s �eA I e� _rc+xl � ieeiinyl'.C. g Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 Table 5-1 Water Qualit Volume Qv Summar SMP Type Re uired Provided (ao-ft) (ao-ft) SMP-1 Pocket Pond 0.093 0.093 SMP-2 Pocket Pond 0.013 0.013 SMP-la Roof Top Disconnection 0.083 0.083 SMP-2a Roof Top Disconnection 0.009 0.009 SMP-3 Roof Top Disconnection 0.019 0.019 SMP-4 Wet Swale 0.009 0.009 SMP-5 Wet Swale 0.006 0.006 TOTAL 0.232 0.232 Refer to Attachment D for detailed WQv calculations. 5.3 Runoff Reduction Volume (RRv) Section 4.3 of the SWMDM states, "Runoff reduction shall be achieved by infiltration, groundwater recharge, reuse, recycle, evaporation/evapotranspiration of 100 percent of the post- development water quality volumes to replicate pre-development hydrology by maintaining pre- construction infiltration, peak runoff flow, discharge volume, as well as minimizing concentrated flow by using runoff control techniques to provide treatment in a distributed manner before runoff reaches the collection system." The stormwater management plan must demonstrate that all green infrastructure planning and design options were evaluated to meet the runoff reduction requirement. The following is a list of green infrastructure practices that were evaluated during design and specific limitations of the site: • 5.3.1 Conservation of Natural Areas o A conservation area is proposed as part of the project. • 5.3.2 Sheetflow to Riparian Buffers/Filter Strips o No filter strips are proposed as part of this project due to lack of sufficient area on-site. • 5.3.3 Vegetated Open Swales o Vegetated open swales are not proposed as part of the project. • 5.3.4 Tree Planting/Tree Box � The LA GROUP L .s .eA I e� _rc+xl � ieeiinyl'.C. 9 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 o Tree plantings are not proposed as a part of the proj ect. • 5.3.5 Disconnection of Rooftop Runoff o Rooftop disconnection is utilized as part of the project. 19,500 sf of rooftop area will be disconnected. • 5.3.6 Stream Daylighting o All subsurface storm sewer piping will be daylighted as soon as possible. • 5.3.7 Rain Garden o Rain gardens are not proposed as runoff from rooftops are utilizing rooftop disconnection instead. • 5.3.8 Green Roof o A green roof is not financially feasible for this proj ect. • 5.3.9 Stormwater Planters o Stormwater planters are not proposed as runoff from rooftops are utilizing rooftop disconnection instead. • 5.3.10 Rain Tanks/Cisterns o Rain tanks/cisterns do not have any tangible functionality on this site as there is little potential for reuse. • 5.3.11 Porous Pavement o Porous pavement is not used as a part of the Project due to shallow depth to groundwater. The RRv requirement on site is met through via rooftop disconnection, which will provide 0.041 ac-ft of RRv. This meets the minimum required RRv of 0.037 ac-ft. Refer to Attachment D for detailed RRv calculations. 5.4 Channel Protection Volume (CPv) Channel Protection Volume (CPv) is achieved by a volume reduction through green infrastructure practices, i.e. rooftop diconnection. The pre-development CPv was determined to be 36,948 cf, and the post-development CPv was determined to be 38,598 c£ The increase in CPv is therefore 1,606 cf, which will be managed onsite via volume reduction from the rooftop disconnection. The volume reduction from green infrastructure is 1,786 cf, which is greater than the required CPv of 1,606 cf. 5.5 Overbank Flood (Qp) and Extreme Flood (Qf� Attenuation The primary purpose of the Overbank Flood (Qp) control sizing criterion is to prevent an increase in the frequency and magnitude of out-of-bank flooding generated by urban development. It requires storage and attenuation of the 10-year, 24-hour storm to ensure post- development peak discharge rates do not exceed the pre-development condition. � The LA GROUP L .s eA I e� �M.I „Fe�i�,yl�C lO Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 The intent of the Extreme Flood (Qf) criteria is to (a) prevent the increased risk of flood damage from large storm events, (b) maintain the boundaries of the pre-development 100-year floodplain, and (c)protect the physical integrity of stormwater management practices. It requires storage and attenuation of the 100-year, 24-hour storm to ensure post-development peak discharge rates do not exceed the pre-development condition. During the 10-year and 100-year 24-hour storm the post-development peak discharge rates do not exceed the pre-development rates, as previously discussed. 6.0 PROPOSED STORMtiVATER FACILITIES The Project is proposing two new pocket ponds to address the stormwater requirements. To meet RRv requirements, rooftop disconnection is proposed for the 14 new residences on site. The stormwater facilities have been indicated on the plans and HydroCAD reports as SMP-1 and SMP-2. A summary of the SNIP is provided below. • SMP-1 is a pocket pond located on the south side of the new road, near the intersection of the new road and Kaydeross Avenue East. • SMP-2 is a pocket pond located in the southwest corner of the site. • SMP-4 is a wet swale on the north side of the new drive. • SMP-5 is a wet swale on the south side of the new drive. The Stormwater Facilities have been designed to provide the necessary pretreatment, treatment, and peak rate attenuation for stormwater runoff, for the project, as required by NYSDEC. 61 Pretreatment Pretreatment for the pocket ponds is provided via a forebay at each pond. Pretreatment for the wet swales is provided via detention within the swale at check dams. 6.2 Treatment Treatment is provided at the pocket ponds through a permanent pool. Treatment at the wet swales is provided by temporarily storing the WQv. Stormwater management devices are designed in accordance with the SWMDM. 7.0 POST-CONSTRUCTION MAINTENANCE REQUIREMENTS 227 Kaydeross Ave. Inc. will be responsible for the continuous upkeep and maintenance of all on-site stormwater management facilities. The on-site stormwater management facilities include � The LA GROUP L .s �eA I e� _rc+xl � ieeiinyl'.C. 11 Stormwater Management Report Kaydeross Avenue East Conservation Subdivision 2016109 SMP-1, SMP-2, SMP-4, SMP-5. Maintenance includes, but is not limited to, removal of sediment from SMPs, cleaning conveyance channels of obstructions, and repairing any other detriments in the design that is resulting in the facilities to not function as intended in the design. 8.0 REFERENCES 1. Urban Hydrology for Small Watersheds. Published by the U.S. Soil Conservation Service, Washington, D.C., June 1986. 2. HydroCAD 10.00 Computer Program, by HydroCAD Software Solutions, LLC. 3. NYSDEC Stormwater Management Design Manual. Published by the New York State Department of Environmental Conservation, Updated January 2015. G:�Proj-2016\2016109 Scott Kayderross_Ave\2016109Enviro\02SWPPP�2016109_SWM.doc � The LA GROUP L .s �eA I e� _rc+xl � ieeiinyl'.C. 12 Attachment A Soil Investigations Soil Survey Natural Resource Map USDA United States A product ofthe National Custom Soil Resource = Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for n I ^�� States Department of I V I� Agriculture and other S a rato g a Federal agencies, State Natural agencies including the Resources Agricultural Experiment �O u ���' ��� Conservation Stations, and local Service participants Yo rk � . � � � � k � �� � ��� �� � ° � ,� � ��� w�� � ,� o� � . (, i �Y S +�y J yl � � '� W �'«' d � �"�"� �..� . e . u..�s . i � - . �� G�i",� .Nt'.,k v- .... f ' . 1 { .1 �' ��� �. i �,� ^�� �„ 6 � ti y ��.�, , s,.., '.�� � �,;r «,..�,,., p e u. �i _ . � ry�q -.` v 't_�. '..:_ �.:....�.+..w���wPTRA "'Wrv'le�. .:.. " � . I...-� ... � � � . : ..t ..;*.',r. ,,s��.: . : , . �.�. - ... . � � � 1!l.�S<<, �4N:=i Y . � . . . .. � . �� . � , ,. .I � �� i � "" ������'''•' - tt � � .. r, � January 23, 2020 P reface 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 BmB—Bernardston silt loam, 3 to 8 percent slopes....................................13 BmC—Bernardston silt loam, 8 to 15 percent slopes..................................14 BmD—Bernardston silt loam, 15 to 25 percent slopes................................15 BnB—Bernardston-Manlius-Nassau complex, undulating.......................... 16 BxB—Burdett silt loam, 3 to 8 percent slopes.............................................18 CIB—Claverack loamy fine sand, 3 to 8 percent slopes............................. 20 In—Ilion silt loam.........................................................................................21 PwB—Pittstown silt loam, 3 to 8 percent slopes.........................................22 References............................................................................................................24 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 ineasurements 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 forthe 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. 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V C � R R � F m ' W J � a o �, o Q � Q ° °'• � .= o � � o � o �N Q � a �, a � a �, � �, N a� a� � w. w. w. y � � � � Q a � � � � w Q Q 3 � 0 2 ° ° Q ., � > > > � ... a� w, � 3 w � a� � o o w '_ o 0 Q Q Q R a Q o a �, o o � � m � � cn >. � � °- o m m m w � 3 -o = � `o �� O a� o `o cn a � � � � LL 3 o T N > > a m w a� c°�i � � � � � Y a� a y � �o �o �o � o o m o � � � � � � w � o m m a� � a o � Q cn cn cn •o m m U U c7 c7 J J � � � a � cn cn cn in in cn v a � R � �,p� 0 t N .�d 4',�"/ ,5�5 ., . . . �. � . . . . �` . . ��. . .,.. o0 R y O Q .. . ` '0 1 � Q V1 Custom Soil Resource Report Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI BmB Bernardston silt loam,3 to 8 6.3 15.4°k percent slopes BmC Bernardston silt loam,8 to 15 16.9 41.3°k percent slopes BmD Bernardston silt loam, 15 to 25 4.5 11.1°k percent slopes BnB Bernardston-Manlius-Nassau 3.7 9.0°k complex, undulating BxB Burdett silt loam,3 to 8 percent 2.1 5.1°k slopes CIB Claverack loamy fine sand,3 to 5.9 14.3°k 8 percent slopes In Ilion silt loam 0.8 1.9°k PwB Pittstown silt loam,3 to 8 0.7 1.8°k percent slopes Totals for Area of Interest 40.9 100.0% 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. Wthin 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 11 Custom Soil Resource Report 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 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 BmB—Bernardston silt loam, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 9w8y Elevation: 0 to 1,000 feet Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: All areas are prime farmland Map Unit Composition Bernardston and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Bernardston Setting Landform: Till plains, drumlinoid ridges, hills Landform position (two-dimensional): Summit Landform position (three-dimensional): Crest Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy, acid, dense till derived mainly from phyllite, shale, slate, and schist Typical profile H1 -0 to 10 inches: silt loam H2- 10 to 26 inches: channery loam H3-26 to 72 inches: channery silt loam Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: 20 to 30 inches to densic material Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 18 to 24 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Low (about 4.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C/D Hydric soil rating: No Minor Components Pittstown Percent of map unit: 10 percent Hydric soil rating: No 13 Custom Soil Resource Report Manlius Percent of map unit: 5 percent Hydric soil rating: No BmC—Bernardston silt loam, 8 to 15 percent slopes Map Unit Setting National map unit symbol: 9w8z Elevation: 0 to 1,000 feet Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: Farmland of statewide importance Map Unit Composition Bernardston and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Bernardston Setting Landform: Drumlinoid ridges, hills, till plains Landform position (two-dimensional): Shoulder Landform position (three-dimensional): Crest Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy, acid, dense till derived mainly from phyllite, shale, slate, and schist Typical profile H1 -0 to 10 inches: silt loam H2- 10 to 26 inches: channery loam H3-26 to 72 inches: channery silt loam Properties and qualities Slope: 8 to 15 percent Depth to restrictive feature: 20 to 30 inches to densic material Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 18 to 24 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Low (about 4.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: C/D 14 Custom Soil Resource Report Hydric soil rating: No Minor Components Pittstown Percent of map unit: 10 percent Hydric soil rating: No Manlius Percent of map unit: 5 percent Hydric soil rating: No BmD—Bernardston silt loam, 15 to 25 percent slopes Map Unit Setting National map unit symbol: 9w90 Elevation: 0 to 1,000 feet Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: Not prime farmland Map Unit Composition Bernardston and similar soils: 85 percent Minor components: 15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Bernardston Setting Landform: Drumlinoid ridges, hills, till plains Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy, acid, dense till derived mainly from phyllite, shale, slate, and schist Typical profile H1 -0 to 10 inches: silt loam H2- 10 to 26 inches: channery loam H3-26 to 72 inches: channery silt loam Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: 20 to 30 inches to densic material Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 18 to 24 inches Frequency of flooding: None 15 Custom Soil Resource Report Frequency of ponding: None Available water storage in profile: Low (about 4.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: C/D Hydric soil rating: No Minor Components Pittstown Percent of map unit: 10 percent Hydric soil rating: No Manlius Percent of map unit: 5 percent Hydric soil rating: No BnB—Bernardston-Manlius-Nassau complex, undulating Map Unit Setting National map unit symbol: 9w91 Elevation: 0 to 1,800 feet Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: All areas are prime farmland Map Unit Composition Bernardston and similar soils: 50 percent Manlius and similar soils: 30 percent Nassau and similar soils: 15 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Bernardston Setting Landform: Drumlinoid ridges, hills, till plains Landform position (two-dimensional): Summit Landform position (three-dimensional): Crest Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy, acid, dense till derived mainly from phyllite, shale, slate, and schist Typical profile H1 -0 to 10 inches: silt loam H2- 10 to 26 inches: channery loam H3-26 to 72 inches: channery silt loam 16 Custom Soil Resource Report Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: 20 to 30 inches to densic material Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 18 to 24 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Low (about 4.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C/D Hydric soil rating: No Description of Manlius Setting Landform: Benches, ridges, till plains Landform position (two-dimensional): Summit Landform position (three-dimensional): Crest Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy till derived mainly from local acid shale bedrock Typical profile H1 -0 to 5 inches: channery silt loam H2-5 to 21 inches: very channery silt loam H3-21 to 24 inches: extremely channery silt loam H4-24 to 34 inches: unweathered bedrock Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: 20 to 40 inches to lithic bedrock Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Very low (0.00 to 0.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Very low (about 2.5 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C Hydric soil rating: No Description of Nassau Setting Landform: Benches, ridges, till plains Landform position (two-dimensional): Summit Landform position (three-dimensional): Crest Down-slope shape: Convex 17 Custom Soil Resource Report Across-slope shape: Convex Parent material: Channery loamy till derived mainly from local slate or shale Typical profile H1 -0 to 3 inches: channery silt loam H2-3 to 18 inches: very channery silt loam H3- 18 to 28 inches: unweathered bedrock Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: 10 to 20 inches to lithic bedrock Natural drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water(Ksat): Very low to moderately high (0.00 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Very low (about 1.9 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3s Hydrologic Soil Group: D Hydric soil rating: No Minor Components Pittstown Percent of map unit: 4 percent Hydric soil rating: No Unnamed soils Percent of map unit: 1 percent BxB—Burdett silt loam, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 9w9b Elevation: 400 to 1,600 feet Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: Prime farmland if drained Map Unit Composition Burdett and similar soils: 75 percent Minor components: 25 percent Estimates are based on observations, descriptions, and transects of the mapunit. 18 Custom Soil Resource Report Description of Burdett Setting Landform: Hills, till plains, drumlinoid ridges Landform position (two-dimensional): Footslope, summit Landform position (three-dimensional): Base slope Down-slope shape: Concave Across-slope shape: Linear Parent material: A thin silt mantle overlying till that is strongly influenced by shale Typical profile H1 -0 to 7 inches: silt loam H2- 7 to 11 inches: very fine sandy loam H3- 11 to 33 inches: channery clay loam H4-33 to 72 inches: channery silt loam Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 6 to 18 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Available water storage in profile: Moderate (about 7.3 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3w Hydrologic Soil Group: C/D Hydric soil rating: No Minor Components Unnamed soils Percent of map unit: 10 percent Manlius Percent of map unit: 5 percent Hydric soil rating: No Nunda Percent of map unit: 5 percent Hydric soil rating: No Ilion Percent of map unit: 5 percent Landform: Depressions Hydric soil rating: Yes 19 Custom Soil Resource Report CIB—Claverack loamy fine sand, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 9w9r Elevation: 600 to 1,800 feet Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: All areas are prime farmland Map Unit Composition Claverack and similar soils: 70 percent Minor components: 30 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Claverack Setting Landform: Lake plains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down-slope shape: Concave Across-slope shape: Convex Parent material: Sandy glaciolacustrine deposits, derived primarily from non- calcareous sandstone or granite, that overlie clayey glaciolacustrine deposits Typical profile H1 -0 to 8 inches: loamy fine sand H2-8 to 27 inches: fine sand 2C-27 to 31 inches: silt loam 3C-31 to 72 inches: silty clay Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: 20 to 40 inches to strongly contrasting textural stratification Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water(Ksat): Very low to moderately high (0.00 to 0.20 in/hr) Depth to water table: About 18 to 24 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Available water storage in profile: Very low (about 1.9 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2w Hydrologic Soil Group: C/D Hydric soil rating: No 20 Custom Soil Resource Report Minor Components Hudson Percent of map unit: 10 percent Hydric soil rating: No Cosad Percent of map unit: 10 percent Hydric soil rating: No Oakville Percent of map unit: 5 percent Hydric soil rating: No Deerfield Percent of map unit: 3 percent Hydric soil rating: No Madalin Percent of map unit: 1 percent Landform: Depressions Hydric soil rating: Yes Rhinebeck Percent of map unit: 1 percent Hydric soil rating: No In—Ilion silt loam Map Unit Setting National map unit symbol: 9wbg Elevation: 600 to 1,800 feet Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: Farmland of statewide importance Map Unit Composition Ilion and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Ilion Setting Landform: Depressions Landform position (two-dimensional): Toeslope Landform position (three-dimensional): Base slope Down-slope shape: Concave Across-slope shape: Concave Parent material: Loamy till derived from calcareous dark shale 21 Custom Soil Resource Report Typical profile Ap-0 to 9 inches: silt loam Eg-9 to 18 inches: silt loam Bt- 18 to 32 inches: silty clay loam BC-32 to 40 inches: silty clay loam Cd-40 to 72 inches: channery silt loam Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water(Ksat): Very low to moderately high (0.00 to 0.20 in/hr) Depth to water table: About 0 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 10 percent Available water storage in profile: Moderate (about 8.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4w Hydrologic Soil Group: C/D Hydric soil rating: Yes Minor Components B u rdett Percent of map unit: 10 percent Hydric soil rating: No PwB—Pittstown silt loam, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 9wcc Mean annual precipitation: 36 to 48 inches Mean annual airtemperature: 45 to 48 degrees F Frost-free period: 125 to 160 days Farmland classification: All areas are prime farmland Map Unit Composition Pittstown and similar soils: 80 percent Minor components: 20 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Pittstown Setting Landform: Till plains, drumlinoid ridges, hills Landform position (two-dimensional): Summit 22 Custom Soil Resource Report Landform position (three-dimensional): Crest Down-slope shape: Concave Across-slope shape: Convex Parent material: Loamy till Typical profile H1 -0 to 11 inches: silt loam H2- 11 to 23 inches: gravelly loam H3-23 to 72 inches: gravelly loam Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: 15 to 30 inches to densic material Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately low to moderately high (0.06 to 0.57 in/hr) Depth to water table: About 18 to 30 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Low (about 4.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C/D Hydric soil rating: No Minor Components Manlius Percent of map unit: 10 percent Hydric soil rating: No Bernardston Percent of map unit: 10 percent Hydric soil rating: No 23 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 Wldlife 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/ n res/d eta i I/n ati o n a I/s o i Is/?cid=n res 142 p2_0 54262 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 Wldlife 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/rangepastu re/?cid=stelprdb1043084 24 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/ n res/d eta i I/so i Is/scie ntists/?cid=n res 142 p2_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=n res 142 p2_05 3624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. 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U o� •� �h� � � �� j �� � `� �� �`. � � — .� i��� � ` � � cn �\ �� "—.'.—"�•-`���'=T=-'� — W . , � � � � � � C � N Q > Q Q � � O � � O -p N � � Y � � Y N 1 2 3 Sub at 1 Sub at 2 Sub at 3 4L 5L 6L AP-1 AP-2 AP-3 Subcat Reach on Link Routing Diagram for Pre Development Prepared by The LA Group, Printed 4/8/2020 HydroCADO 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Pre Development Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 3.542 80 >75% Grass cover, Good, HSG D (1, 2, 3) 0.081 98 Paved parking, HSG D (2, 3) 31.114 77 Woods, Good, HSG D (1, 2, 3) 34.737 77 TOTAL AREA Pre Development Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.000 HSG B 0.000 HSG C 34.737 HSG D 1, 2, 3 0.000 Other 34.737 TOTAL AREA Pre Development Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.000 0.000 3.542 0.000 3.542 >75% Grass cover, Good 1, 2, 3 0.000 0.000 0.000 0.081 0.000 0.081 Paved parking 2, 3 0.000 0.000 0.000 31.114 0.000 31.114 Woods, Good 1, 2, 3 0.000 0.000 0.000 34.737 0.000 34.737 TOTAL AREA Pre Development Type 1124-hr 1-year Rainfa11=2.15" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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: Subcat 1 Runoff Area=3.151 ac 0.00% Impervious Runoff Depth>0.47" Flow Length=494' Tc=16.5 min CN=77 Runoff=1.85 cfs 0.123 af Subcatchment 2: Subcat 2 Runoff Area=24.562 ac 0.26% Impervious Runoff Depth>0.47" Flow Length=1,351' Tc=23.4 min CN=77 Runoff=11.49 cfs 0.958 af Subcatchment 3: Subcat 3 Runoff Area=7.023 ac 0.25% Impervious Runoff Depth>0.50" Flow Length=857' Tc=30.1 min CN=78 Runoff=3.04 cfs 0.295 af Link 4L: AP-1 Inflow=1.85 cfs 0.123 af Primary=1.85 cfs 0.123 af Link 5L: AP-2 Inflow=11.49 cfs 0.958 af Primary=11.49 cfs 0.958 af Link 6L: AP-3 Inflow=3.04 cfs 0.295 af Primary=3.04 cfs 0.295 af Total Runoff Area= 34.737 ac Runoff Volume = 1.376 af Average Runoff Depth = 0.48" 99.77% Pervious= 34.656 ac 0.23% Impervious = 0.081 ac Pre Development Type 1124-hr 10-year Rainfa11=3.75" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 6 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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: Subcat 1 Runoff Area=3.151 ac 0.00% Impervious Runoff Depth>1.47" Flow Length=494' Tc=16.5 min CN=77 Runoff=6.21 cfs 0.387 af Subcatchment 2: Subcat 2 Runoff Area=24.562 ac 0.26% Impervious Runoff Depth>1.47" Flow Length=1,351' Tc=23.4 min CN=77 Runoff=39.58 cfs 3.009 af Subcatchment 3: Subcat 3 Runoff Area=7.023 ac 0.25% Impervious Runoff Depth>1.53" Flow Length=857' Tc=30.1 min CN=78 Runoff=10.09 cfs 0.898 af Link 4L: AP-1 Inflow=6.21 cfs 0.387 af Primary=6.21 cfs 0.387 af Link 5L: AP-2 Inflow=39.58 cfs 3.009 af Primary=39.58 cfs 3.009 af Link 6L: AP-3 Inflow=10.09 cfs 0.898 af Primary=10.09 cfs 0.898 af Total Runoff Area= 34.737 ac Runoff Volume =4.293 af Average Runoff Depth = 1.48" 99.77% Pervious= 34.656 ac 0.23% Impervious = 0.081 ac Pre Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 1 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 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: Subcat 1 Runoff Area=3.151 ac 0.00% Impervious Runoff Depth>3.38" Flow Length=494' Tc=16.5 min CN=77 Runoff=14.10 cfs 0.887 af Subcatchment 2: Subcat 2 Runoff Area=24.562 ac 0.26% Impervious Runoff Depth>3.37" Flow Length=1,351' Tc=23.4 min CN=77 Runoff=90.77 cfs 6.897 af Subcatchment 3: Subcat 3 Runoff Area=7.023 ac 0.25% Impervious Runoff Depth>3.46" Flow Length=857' Tc=30.1 min CN=78 Runoff=22.79 cfs 2.025 af Link 4L: AP-1 Inflow=14.10 cfs 0.887 af Primary=14.10 cfs 0.887 af Link 5L: AP-2 Inflow=90.77 cfs 6.897 af Primary=90.77 cfs 6.897 af Link 6L: AP-3 Inflow=22.79 cfs 2.025 af Primary=22.79 cfs 2.025 af Total Runoff Area= 34.737 ac Runoff Volume = 9.809 af Average Runoff Depth = 3.39" 99.77% Pervious= 34.656 ac 0.23% Impervious = 0.081 ac Pre Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 1: Subcat 1 Runoff = 14.10 cfs @ 12.09 hrs, Volume= 0.887 af, Depth> 3.38" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.003 80 >75% Grass cover, Good, HSG D 3.148 77 Woods, Good, HSG D 3.151 77 Weighted Average 3.151 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.1 100 0.0900 0.13 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 3.4 394 0.1470 1.92 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 16.5 494 Total Summary for Subcatchment 2: Subcat 2 Runoff = 90.77 cfs @ 12.16 hrs, Volume= 6.897 af, Depth> 3.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 2.478 80 >75% Grass cover, Good, HSG D 0.064 98 Paved parking, HSG D 22.021 77 Woods, Good, HSG D 24.562 77 Weighted Average 24.499 99.74% Pervious Area 0.064 0.26% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 13.7 100 0.0800 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 3.2 310 0.1016 1.59 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 6.5 941 0.0256 2.40 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 23.4 1,351 Total Pre Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 3 Summary for Subcatchment 3: Subcat 3 Runoff = 22.79 cfs @ 12.24 hrs, Volume= 2.025 af, Depth> 3.46" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 1.061 80 >75% Grass cover, Good, HSG D 0.018 98 Paved parking, HSG D 5.944 77 Woods, Good, HSG D 7.023 78 Weighted Average 7.006 99.75% Pervious Area 0.018 0.25% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.8 100 0.0360 0.09 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 11.3 757 0.0500 1.12 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 30.1 857 Total Summary for Link 4L: AP-1 Inflow Area = 3.151 ac, 0.00% Impervious, Inflow Depth > 3.38" for 100-year event Inflow = 14.10 cfs @ 12.09 hrs, Volume= 0.887 af Primary = 14.10 cfs @ 12.09 hrs, Volume= 0.887 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Link 5L: AP-2 Inflow Area = 24.562 ac, 0.26% Impervious, Inflow Depth > 3.37" for 100-year event Inflow = 90.77 cfs @ 12.16 hrs, Volume= 6.897 af Primary = 90.77 cfs @ 12.16 hrs, Volume= 6.897 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Link 6L: AP-3 Inflow Area = 7.023 ac, 0.25% Impervious, Inflow Depth > 3.46" for 100-year event Inflow = 22.79 cfs @ 12.24 hrs, Volume= 2.025 af Primary = 22.79 cfs @ 12.24 hrs, Volume= 2.025 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Attachment C Proposed Conditions Watershed Map and HydroCAD Calculations a� � J�€ � �s Q �v o g; � L g � �� - 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Pond routing by Dyn-Stor-Ind method Subcatchment 1a: Subcat 1a Runoff Area=2.606 ac 0.00% Impervious Runoff Depth>0.51" Flow Length=433' Tc=14.7 min CN=78 Runoff=1.80 cfs 0.110 af Subcatchment 2a: (SMP-3) Runoff Area=15.747 ac 1.72% Impervious Runoff Depth>0.51" Flow Length=1,250' Tc=20.2 min CN=78 Runoff=8.99 cfs 0.664 af Subcatchment 2b: Subcat 2b Runoff Area=0.220 ac 67.06% Impervious Runoff Depth>1.28" Tc=6.0 min CN=92 Runoff=0.53 cfs 0.023 af Subcatchment 2c: Subcat 2c Runoff Area=0.334 ac 25.72% Impervious Runoff Depth>0.78" Tc=6.0 min CN=84 Runoff=0.51 cfs 0.022 af Subcatchment 2d: Subcat 2d Runoff Area=4.804 ac 0.00% Impervious Runoff Depth>0.51" Flow Length=541' Tc=23.0 min CN=78 Runoff=2.52 cfs 0.202 af Subcatchment 2e1: Subcat 2e1 Runoff Area=2.738 ac 17.69% Impervious Runoff Depth>0.73" Tc=6.0 min CN=83 Runoff=3.91 cfs 0.166 af Subcatchment 2e2: Subcat 2e2 Runoff Area=1.273 ac 29.09% Impervious Runoff Depth>0.83" Tc=6.0 min CN=85 Runoff=2.07 cfs 0.088 af Subcatchment 3a: Subcat 3a Runoff Area=4.064 ac 0.01% Impervious Runoff Depth>0.47" Flow Length=735' Tc=26.2 min CN=77 Runoff=1.77 cfs 0.158 af Subcatchment 3b1: Subcat 3b1 Runoff Area=0.880 ac 30.73% Impervious Runoff Depth>0.88" Tc=6.0 min CN=86 Runoff=1.52 cfs 0.065 af Subcatchment 3b2: Subcat 3b2 Runoff Area=0.673 ac 42.90% Impervious Runoff Depth>0.94" Tc=6.0 min CN=87 Runoff=1.23 cfs 0.053 af Subcatchment 3c: Subcat 3c Runoff Area=0.202 ac 5.52% Impervious Runoff Depth>0.63" Tc=6.0 min CN=81 Runoff=0.25 cfs 0.011 af Subcatchment 3d: Subcat 3d Runoff Area=0.648 ac 3.00% Impervious Runoff Depth>0.59" Tc=6.0 min CN=80 Runoff=0.75 cfs 0.032 af Subcatchment 3e: Subcat 3e Runoff Area=0.258 ac 26.14% Impervious Runoff Depth>0.83" Tc=6.0 min CN=85 Runoff=0.42 cfs 0.018 af Subcatchment 3e1: Subcat 3e1 Runoff Area=0.124 ac 16.83% Impervious Runoff Depth>0.73" Tc=6.0 min CN=83 Runoff=0.18 cfs 0.007 af Subcatchment 3f: Subcat 3f Runoff Area=0.134 ac 29.91% Impervious Runoff Depth>0.83" Tc=6.0 min CN=85 Runoff=0.22 cfs 0.009 af Subcatchment 3f1: Subcat 3f1 Runoff Area=0.032 ac 48.65% Impervious Runoff Depth>1.06" Tc=6.0 min CN=89 Runoff=0.06 cfs 0.003 af Post Development Type 1124-hr 1-year Rainfa11=2.15" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 7 Reach SW-1: SWALE Avg. Flow Depth=0.45' Max Ve1=0.65 fps Inflow=1.52 cfs 0.065 af n=0.120 L=200.0' S=0.0120 '/' Capacity=6.07 cfs Outflow=1.28 cfs 0.064 af Pond 4P: CB-10 TO CB-6 Peak EIev=250.18' Inflow=1.04 cfs 0.045 af 12.0" Round Culvert n=0.013 L=265.0' S=0.0457 '/' Outflow=1.04 cfs 0.045 af Pond 5P: CB-5 TO CB-1 Peak Elev=238.19' Inflow=2.23 cfs 0.109 af 15.0" Round Culvert n=0.013 L=444.0' S=0.0386 '/' Outflow=2.23 cfs 0.109 af Pond 6P: CULVERT Peak Elev=262.16' Inflow=2.07 cfs 0.088 af 18.0" Round Culvert n=0.013 L=40.0' S=0.0125 '/' Outflow=2.07 cfs 0.088 af Pond F1: Pretreatment Check Dam Peak EIev=222.05' Storage=112 cf Inflow=0.18 cfs 0.007 af Outflow=0.13 cfs 0.005 af Pond F2: Pretreatment Check Dam Peak EIev=221.01' Storage=74 cf Inflow=0.06 cfs 0.003 af Outflow=0.01 cfs 0.001 af Pond FB-1: FOREBAY Peak EIev=260.29' Storage=1,890 cf Inflow=5.98 cfs 0.253 af Outflow=5.86 cfs 0.253 af Pond FB-2: FOREBAY Peak Elev=219.71' Storage=1,981 cf Inflow=3.44 cfs 0.162 af Outflow=3.30 cfs 0.161 af Pond SMP-1: WET POND Peak Elev=257.95' Storage=11,378 cf Inflow=5.86 cfs 0.253 af Outflow=1.09 cfs 0.238 af Pond SMP-2: WET POND Peak Elev=218.48' Storage=9,175 cf Inflow=4.00 cfs 0.193 af Outflow=1.62 cfs 0.183 af Pond SMP-4.1: Wet Swale Peak Elev=221.11' Storage=99 cf Inflow=0.48 cfs 0.023 af Outflow=0.47 cfs 0.021 af Pond SMP-4.2: Wet Swale Peak EIev=220.11' Storage=82 cf Inflow=0.47 cfs 0.021 af Outflow=0.46 cfs 0.020 af Pond SMP-4.3: Wet Swale Peak Elev=219.11' Storage=81 cf Inflow=0.46 cfs 0.020 af Outflow=0.46 cfs 0.018 af Pond SMP-4.4: Wet Swale Peak EIev=218.09' Storage=139 cf Inflow=0.46 cfs 0.018 af Outflow=0.33 cfs 0.016 af Pond SMP-5.1: Wet Swale Peak EIev=220.07' Storage=69 cf Inflow=0.22 cfs 0.010 af Outflow=0.22 cfs 0.009 af Pond SMP-5.2: Wet Swale Peak EIev=219.06' Storage=69 cf Inflow=0.22 cfs 0.009 af Outflow=0.20 cfs 0.008 af Pond SMP-5.3: Wet Swale Peak EIev=218.02' Storage=83 cf Inflow=0.20 cfs 0.008 af Outflow=0.04 cfs 0.006 af Post Development Type 1124-hr 1-year Rainfa11=2.15" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 8 Link 4L: AP-1 Inflow=1.80 cfs 0.110 af Primary=1.80 cfs 0.110 af Link 5L: AP-2 Inflow=12.52 cfs 1.104 af Primary=12.52 cfs 1.104 af Link 6L: AP-3 Inflow=3.56 cfs 0.373 af Primary=3.56 cfs 0.373 af Total Runoff Area= 34.737 ac Runoff Volume = 1.630 af Average Runoff Depth = 0.56" 93.98% Pervious= 32.645 ac 6.02% Impervious = 2.093 ac Post Development Type 1124-hr 10-year Rainfa11=3.75" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 9 Time span=4.00-20.00 hrs, dt=0.01 hrs, 1601 points x 3 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 1a: Subcat 1a Runoff Area=2.606 ac 0.00% Impervious Runoff Depth>1.54" Flow Length=433' Tc=14.7 min CN=78 Runoff=5.75 cfs 0.335 af Subcatchment 2a: (SMP-3) Runoff Area=15.747 ac 1.72% Impervious Runoff Depth>1.54" Flow Length=1,250' Tc=20.2 min CN=78 Runoff=29.24 cfs 2.019 af Subcatchment 2b: Subcat 2b Runoff Area=0.220 ac 67.06% Impervious Runoff Depth>2.70" Tc=6.0 min CN=92 Runoff=1.06 cfs 0.049 af Subcatchment 2c: Subcat 2c Runoff Area=0.334 ac 25.72% Impervious Runoff Depth>1.99" Tc=6.0 min CN=84 Runoff=1.27 cfs 0.056 af Subcatchment 2d: Subcat 2d Runoff Area=4.804 ac 0.00% Impervious Runoff Depth>1.54" Flow Length=541' Tc=23.0 min CN=78 Runoff=8.22 cfs 0.615 af Subcatchment 2e1: Subcat 2e1 Runoff Area=2.738 ac 17.69% Impervious Runoff Depth>1.91" Tc=6.0 min CN=83 Runoff=10.06 cfs 0.437 af Subcatchment 2e2: Subcat 2e2 Runoff Area=1.273 ac 29.09% Impervious Runoff Depth>2.07" Tc=6.0 min CN=85 Runoff=5.01 cfs 0.220 af Subcatchment 3a: Subcat 3a Runoff Area=4.064 ac 0.01% Impervious Runoff Depth>1.47" Flow Length=735' Tc=26.2 min CN=77 Runoff=6.13 cfs 0.497 af Subcatchment 3b1: Subcat 3b1 Runoff Area=0.880 ac 30.73% Impervious Runoff Depth>2.16" Tc=6.0 min CN=86 Runoff=3.58 cfs 0.158 af Subcatchment 3b2: Subcat 3b2 Runoff Area=0.673 ac 42.90% Impervious Runoff Depth>2.24" Tc=6.0 min CN=87 Runoff=2.82 cfs 0.126 af Subcatchment 3c: Subcat 3c Runoff Area=0.202 ac 5.52% Impervious Runoff Depth>1.76" Tc=6.0 min CN=81 Runoff=0.69 cfs 0.030 af Subcatchment 3d: Subcat 3d Runoff Area=0.648 ac 3.00% Impervious Runoff Depth>1.69" Tc=6.0 min CN=80 Runoff=2.13 cfs 0.091 af Subcatchment 3e: Subcat 3e Runoff Area=0.258 ac 26.14% Impervious Runoff Depth>2.07" Tc=6.0 min CN=85 Runoff=1.02 cfs 0.045 af Subcatchment 3e1: Subcat 3e1 Runoff Area=0.124 ac 16.83% Impervious Runoff Depth>1.91" Tc=6.0 min CN=83 Runoff=0.45 cfs 0.020 af Subcatchment 3f: Subcat 3f Runoff Area=0.134 ac 29.91% Impervious Runoff Depth>2.07" Tc=6.0 min CN=85 Runoff=0.53 cfs 0.023 af Subcatchment 3f1: Subcat 3f1 Runoff Area=0.032 ac 48.65% Impervious Runoff Depth>2.42" Tc=6.0 min CN=89 Runoff=0.14 cfs 0.006 af Post Development Type 1124-hr 10-year Rainfa11=3.75" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 10 Reach SW-1: SWALE Avg. Flow Depth=0.73' Max Ve1=0.85 fps Inflow=3.58 cfs 0.158 af n=0.120 L=200.0' S=0.0120 '/' Capacity=6.07 cfs Outflow=3.19 cfs 0.157 af Pond 4P: CB-10 TO CB-6 Peak EIev=250.53' Inflow=2.33 cfs 0.105 af 12.0" Round Culvert n=0.013 L=265.0' S=0.0457 '/' Outflow=2.33 cfs 0.105 af Pond 5P: CB-5 TO CB-1 Peak Elev=238.91' Inflow=5.39 cfs 0.262 af 15.0" Round Culvert n=0.013 L=444.0' S=0.0386 '/' Outflow=5.39 cfs 0.262 af Pond 6P: CULVERT Peak Elev=262.64' Inflow=5.01 cfs 0.220 af 18.0" Round Culvert n=0.013 L=40.0' S=0.0125 '/' Outflow=5.01 cfs 0.220 af Pond F1: Pretreatment Check Dam Peak Elev=222.11' Storage=131 cf Inflow=0.45 cfs 0.020 af Outflow=0.45 cfs 0.017 af Pond F2: Pretreatment Check Dam Peak EIev=221.05' Storage=84 cf Inflow=0.14 cfs 0.006 af Outflow=0.14 cfs 0.005 af Pond FB-1: FOREBAY Peak EIev=260.52' Storage=2,327 cf Inflow=15.07 cfs 0.657 af Outflow=14.89 cfs 0.656 af Pond FB-2: FOREBAY Peak Elev=219.86' Storage=2,326 cf Inflow=8.16 cfs 0.388 af Outflow=7.99 cfs 0.387 af Pond SMP-1: WET POND Peak EIev=259.40' Storage=19,974 cf Inflow=14.89 cfs 0.656 af Outflow=1.82 cfs 0.635 af Pond SMP-2: WET POND Peak Elev=219.46' Storage=13,614 cf Inflow=10.03 cfs 0.478 af Outflow=3.13 cfs 0.464 af Pond SMP-4.1: Wet Swale Peak Elev=221.24' Storage=130 cf Inflow=1.46 cfs 0.062 af Outflow=1.45 cfs 0.060 af Pond SMP-4.2: Wet Swale Peak EIev=220.24' Storage=108 cf Inflow=1.45 cfs 0.060 af Outflow=1.44 cfs 0.059 af Pond SMP-4.3: Wet Swale Peak Elev=219.24' Storage=106 cf Inflow=1.44 cfs 0.059 af Outflow=1.44 cfs 0.057 af Pond SMP-4.4: Wet Swale Peak Elev=218.24' Storage=178 cf Inflow=1.44 cfs 0.057 af Outflow=1.43 cfs 0.055 af Pond SMP-5.1: Wet Swale Peak EIev=220.14' Storage=83 cf Inflow=0.66 cfs 0.028 af Outflow=0.66 cfs 0.026 af Pond SMP-5.2: Wet Swale Peak Elev=219.14' Storage=83 cf Inflow=0.66 cfs 0.026 af Outflow=0.66 cfs 0.025 af Pond SMP-5.3: Wet Swale Peak Elev=218.14' Storage=112 cf Inflow=0.66 cfs 0.025 af Outflow=0.65 cfs 0.023 af Post Development Type 1124-hr 10-year Rainfa11=3.75" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 11 Link 4L: AP-1 Inflow=5.75 cfs 0.335 af Primary=5.75 cfs 0.335 af Link 5L: AP-2 Inflow=39.16 cfs 3.270 af Primary=39.16 cfs 3.270 af Link 6L: AP-3 Inflow=9.76 cfs 1.068 af Primary=9.76 cfs 1.068 af Total Runoff Area= 34.737 ac Runoff Volume =4.727 af Average Runoff Depth = 1.63" 93.98% Pervious= 32.645 ac 6.02% Impervious = 2.093 ac Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 1 Time span=4.00-20.00 hrs, dt=0.01 hrs, 1601 points x 3 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 1a: Subcat 1a Runoff Area=2.606 ac 0.00% Impervious Runoff Depth>3.48" Flow Length=433' Tc=14.7 min CN=78 Runoff=12.78 cfs 0.755 af Subcatchment 2a: (SMP-3) Runoff Area=15.747 ac 1.72% Impervious Runoff Depth>3.47" Flow Length=1,250' Tc=20.2 min CN=78 Runoff=65.33 cfs 4.554 af Subcatchment 2b: Subcat 2b Runoff Area=0.220 ac 67.06% Impervious Runoff Depth>4.95" Tc=6.0 min CN=92 Runoff=1.86 cfs 0.091 af Subcatchment 2c: Subcat 2c Runoff Area=0.334 ac 25.72% Impervious Runoff Depth>4.10" Tc=6.0 min CN=84 Runoff=2.50 cfs 0.114 af Subcatchment 2d: Subcat 2d Runoff Area=4.804 ac 0.00% Impervious Runoff Depth>3.47" Flow Length=541' Tc=23.0 min CN=78 Runoff=18.48 cfs 1.388 af Subcatchment 2e1: Subcat 2e1 Runoff Area=2.738 ac 17.69% Impervious Runoff Depth>3.99" Tc=6.0 min CN=83 Runoff=20.12 cfs 0.911 af Subcatchment 2e2: Subcat 2e2 Runoff Area=1.273 ac 29.09% Impervious Runoff Depth>4.20" Tc=6.0 min CN=85 Runoff=9.71 cfs 0.446 af Subcatchment 3a: Subcat 3a Runoff Area=4.064 ac 0.01% Impervious Runoff Depth>3.36" Flow Length=735' Tc=26.2 min CN=77 Runoff=14.10 cfs 1.139 af Subcatchment 3b1: Subcat 3b1 Runoff Area=0.880 ac 30.73% Impervious Runoff Depth>4.31" Tc=6.0 min CN=86 Runoff=6.83 cfs 0.316 af Subcatchment 3b2: Subcat 3b2 Runoff Area=0.673 ac 42.90% Impervious Runoff Depth>4.42" Tc=6.0 min CN=87 Runoff=5.31 cfs 0.248 af Subcatchment 3c: Subcat 3c Runoff Area=0.202 ac 5.52% Impervious Runoff Depth>3.79" Tc=6.0 min CN=81 Runoff=1.42 cfs 0.064 af Subcatchment 3d: Subcat 3d Runoff Area=0.648 ac 3.00% Impervious Runoff Depth>3.69" Tc=6.0 min CN=80 Runoff=4.48 cfs 0.199 af Subcatchment 3e: Subcat 3e Runoff Area=0.258 ac 26.14% Impervious Runoff Depth>4.20" Tc=6.0 min CN=85 Runoff=1.97 cfs 0.090 af Subcatchment 3e1: Subcat 3e1 Runoff Area=0.124 ac 16.83% Impervious Runoff Depth>3.99" Tc=6.0 min CN=83 Runoff=0.91 cfs 0.041 af Subcatchment 3f: Subcat 3f Runoff Area=0.134 ac 29.91% Impervious Runoff Depth>4.20" Tc=6.0 min CN=85 Runoff=1.02 cfs 0.047 af Subcatchment 3f1: Subcat 3f1 Runoff Area=0.032 ac 48.65% Impervious Runoff Depth>4.63" Tc=6.0 min CN=89 Runoff=0.26 cfs 0.012 af Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 2 Reach SW-1: SWALE Avg. Flow Depth=1.02' Max Ve1=1.02 fps Inflow=6.83 cfs 0.316 af n=0.120 L=200.0' S=0.0120 '/' Capacity=6.07 cfs Outflow=6.28 cfs 0.315 af Pond 4P: CB-10 TO CB-6 Peak Elev=251.48' Inflow=4.36 cfs 0.205 af 12.0" Round Culvert n=0.013 L=265.0' S=0.0457 '/' Outflow=4.36 cfs 0.205 af Pond 5P: CB-5 TO CB-1 Peak EIev=241.20' Inflow=10.45 cfs 0.520 af 15.0" Round Culvert n=0.013 L=444.0' S=0.0386 '/' Outflow=10.45 cfs 0.520 af Pond 6P: CULVERT Peak Elev=263.55' Inflow=9.71 cfs 0.446 af 18.0" Round Culvert n=0.013 L=40.0' S=0.0125 '/' Outflow=9.71 cfs 0.446 af Pond F1: Pretreatment Check Dam Peak Elev=222.17' Storage=154 cf Inflow=0.91 cfs 0.041 af Outflow=0.90 cfs 0.039 af Pond F2: Pretreatment Check Dam Peak EIev=221.07' Storage=90 cf Inflow=0.26 cfs 0.012 af Outflow=0.25 cfs 0.010 af Pond FB-1: FOREBAY Peak EIev=260.92' Storage=3,200 cf Inflow=29.83 cfs 1.357 af Outflow=29.19 cfs 1.356 af Pond FB-2: FOREBAY Peak EIev=220.44' Storage=3,791 cf Inflow=15.69 cfs 0.767 af Outflow=13.07 cfs 0.766 af Pond SMP-1: WET POND Peak EIev=260.91' Storage=31,876 cf Inflow=29.19 cfs 1.356 af Outflow=6.91 cfs 1.325 af Pond SMP-2: WET POND Peak EIev=220.44' Storage=19,001 cf Inflow=17.53 cfs 0.965 af Outflow=7.18 cfs 0.946 af Pond SMP-4.1: Wet Swale Peak Elev=221.37' Storage=167 cf Inflow=2.86 cfs 0.129 af Outflow=2.85 cfs 0.127 af Pond SMP-4.2: Wet Swale Peak EIev=220.36' Storage=136 cf Inflow=2.85 cfs 0.127 af Outflow=2.84 cfs 0.126 af Pond SMP-4.3: Wet Swale Peak Elev=219.36' Storage=134 cf Inflow=2.84 cfs 0.126 af Outflow=2.83 cfs 0.125 af Pond SMP-4.4: Wet Swale Peak Elev=218.36' Storage=214 cf Inflow=2.83 cfs 0.125 af Outflow=2.82 cfs 0.122 af Pond SMP-5.1: Wet Swale Peak EIev=220.22' Storage=98 cf Inflow=1.27 cfs 0.057 af Outflow=1.27 cfs 0.056 af Pond SMP-5.2: Wet Swale Peak Elev=219.22' Storage=99 cf Inflow=1.27 cfs 0.056 af Outflow=1.26 cfs 0.055 af Pond SMP-5.3: Wet Swale Peak Elev=218.22' Storage=133 cf Inflow=1.26 cfs 0.055 af Outflow=1.26 cfs 0.053 af Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 3 Link 4L: AP-1 Inflow=12.78 cfs 0.755 af Primary=12.78 cfs 0.755 af Link 5L: AP-2 Inflow=90.54 cfs 7.267 af Primary=90.54 cfs 7.267 af Link 6L: AP-3 Inflow=22.14 cfs 2.323 af Primary=22.14 cfs 2.323 af Total Runoff Area= 34.737 ac Runoff Volume = 10.416 af Average Runoff Depth = 3.60" 93.98% Pervious= 32.645 ac 6.02% Impervious = 2.093 ac Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 4 Summary for Subcatchment 1a: Subcat 1a Runoff = 12.78 cfs @ 12.07 hrs, Volume= 0.755 af, Depth> 3.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.860 80 >75% Grass cover, Good, HSG D 1.747 77 Woods, Good, HSG D 2.606 78 Weighted Average 2.606 78 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.6 100 0.1200 0.14 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 3.1 333 0.1260 1.77 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 14.7 433 Total Summary for Subcatchment 2a: (SMP-3) Runoff = 65.33 cfs @ 12.13 hrs, Volume= 4.554 af, Depth> 3.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 3.969 80 >75% Grass cover, Good, HSG D 0.271 98 Paved parking, HSG D 11.507 77 Woods, Good, HSG D 15.747 78 Weighted Average 15.477 78 98.28% Pervious Area 0.271 98 1.72% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.6 100 0.1200 0.14 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 0.5 50 0.1200 1.73 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 8.1 1,100 0.0230 2.27 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 20.2 1,250 Total Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 2b: Subcat 2b Runoff = 1.86 cfs @ 11.97 hrs, Volume= 0.091 af, Depth> 4.95" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.072 80 >75% Grass cover, Good, HSG D 0.147 98 Paved parking, HSG D 0.220 92 Weighted Average 0.072 80 32.94% Pervious Area 0.147 98 67.06% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 2c: Subcat 2c Runoff = 2.50 cfs @ 11.97 hrs, Volume= 0.114 af, Depth> 4.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.223 80 >75% Grass cover, Good, HSG D 0.086 98 Paved parking, HSG D 0.025 77 Woods, Good, HSG D 0.334 84 Weighted Average 0.248 80 74.28% Pervious Area 0.086 98 25.72% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 2d: Subcat 2d Runoff = 18.48 cfs @ 12.16 hrs, Volume= 1.388 af, Depth> 3.47" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.856 80 >75% Grass cover, Good, HSG D 3.948 77 Woods, Good, HSG D 4.804 78 Weighted Average 4.804 78 100.00% Pervious Area Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 6 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.1 100 0.0400 0.09 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 1.7 157 0.0950 1.54 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 3.2 284 0.0100 1.50 Shallow Concentrated Flow, Grassed Waterway Kv= 15.0 fps 23.0 541 Total Summary for Subcatchment 2e1: Subcat 2e1 Runoff = 20.12 cfs @ 11.97 hrs, Volume= 0.911 af, Depth> 3.99" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 1.900 80 >75% Grass cover, Good, HSG D 0.484 98 Paved parking, HSG D 0.354 77 Woods, Good, HSG D 2.738 83 Weighted Average 2.253 80 82.31% Pervious Area 0.484 98 17.69% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 2e2: Subcat 2e2 Runoff = 9.71 cfs @ 11.97 hrs, Volume= 0.446 af, Depth> 4.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.903 80 >75% Grass cover, Good, HSG D 0.370 98 Paved parking, HSG D 1.273 85 Weighted Average 0.903 80 70.91% Pervious Area 0.370 98 29.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 3a: Subcat 3a Runoff = 14.10 cfs @ 12.20 hrs, Volume= 1.139 af, Depth> 3.36" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.470 80 >75% Grass cover, Good, HSG D 0.000 98 Paved parking, HSG D 3.594 77 Woods, Good, HSG D 4.064 77 Weighted Average 4.064 77 99.99% Pervious Area 0.000 98 0.01% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.5 100 0.0500 0.10 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 9.7 635 0.0480 1.10 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 26.2 735 Total Summary for Subcatchment 3b1: Subcat 3b1 Runoff = 6.83 cfs @ 11.97 hrs, Volume= 0.316 af, Depth> 4.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.610 80 >75% Grass cover, Good, HSG D 0.270 98 Paved parking, HSG D 0.880 86 Weighted Average 0.610 80 69.27% Pervious Area 0.270 98 30.73% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3b2: Subcat 3b2 Runoff = 5.31 cfs @ 11.97 hrs, Volume= 0.248 af, Depth> 4.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 8 Area (ac) CN Description 0.255 80 >75% Grass cover, Good, HSG D 0.289 98 Paved parking, HSG D 0.129 77 Woods, Good, HSG D 0.673 87 Weighted Average 0.384 79 57.10% Pervious Area 0.289 98 42.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3c: Subcat 3c Runoff = 1.42 cfs @ 11.97 hrs, Volume= 0.064 af, Depth> 3.79" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.177 80 >75% Grass cover, Good, HSG D 0.011 98 Paved parking, HSG D 0.013 77 Woods, Good, HSG D 0.202 81 Weighted Average 0.190 80 94.48% Pervious Area 0.011 98 5.52% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3d: Subcat 3d Runoff = 4.48 cfs @ 11.97 hrs, Volume= 0.199 af, Depth> 3.69" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.503 80 >75% Grass cover, Good, HSG D 0.019 98 Paved parking, HSG D 0.126 77 Woods, Good, HSG D 0.648 80 Weighted Average 0.629 79 97.00% Pervious Area 0.019 98 3.00% Impervious Area Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 9 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3e: Subcat 3e Runoff = 1.97 cfs @ 11.97 hrs, Volume= 0.090 af, Depth> 4.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.179 80 >75% Grass cover, Good, HSG D 0.067 98 Paved parking, HSG D 0.011 77 Woods, Good, HSG D 0.258 85 Weighted Average 0.190 80 73.86% Pervious Area 0.067 98 26.14% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3e1: Subcat 3e1 Runoff = 0.91 cfs @ 11.97 hrs, Volume= 0.041 af, Depth> 3.99" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.103 80 >75% Grass cover, Good, HSG D 0.021 98 Paved parking, HSG D 0.124 83 Weighted Average 0.103 80 83.17% Pervious Area 0.021 98 16.83% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3f: Subcat 3f Runoff = 1.02 cfs @ 11.97 hrs, Volume= 0.047 af, Depth> 4.20" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 10 Area (ac) CN Description 0.094 80 >75% Grass cover, Good, HSG D 0.040 98 Paved parking, HSG D 0.134 85 Weighted Average 0.094 80 70.09% Pervious Area 0.040 98 29.91% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3f1: Subcat 3f1 Runoff = 0.26 cfs @ 11.97 hrs, Volume= 0.012 af, Depth> 4.63" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Type II 24-hr 100-year Rainfa11=6.20" Area (ac) CN Description 0.016 80 >75% Grass cover, Good, HSG D 0.015 98 Paved parking, HSG D 0.032 89 Weighted Average 0.016 80 51.35% Pervious Area 0.015 98 48.65% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach SW-1: SWALE Inflow Area = 0.880 ac, 30.73% Impervious, Inflow Depth > 4.31" for 100-year event Inflow = 6.83 cfs @ 11.97 hrs, Volume= 0.316 af Outflow = 6.28 cfs @ 12.00 hrs, Volume= 0.315 af, Atten= 8%, Lag= 1.8 min Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Max. Velocity= 1.02 fps, Min. Travel Time= 3.3 min Avg. Velocity = 0.30 fps, Avg. Travel Time= 11.2 min Peak Storage= 1,231 cf @ 12.00 hrs Average Depth at Peak Storage= 1.02' Bank-Full Depth= 1.00' Flow Area= 6.0 sf, Capacity= 6.07 cfs 3.00' x 1.00' deep channel, n= 0.120 Side Slope Z-value= 3.0 '/' Top Width= 9.00' Length= 200.0' Slope= 0.0120 '/' Inlet Invert= 252.90', Outlet Invert= 250.50' Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 11 $ Summary for Pond 4P: CB-10 TO CB-6 Inflow Area = 0.554 ac, 42.11% Impervious, Inflow Depth > 4.44" for 100-year event Inflow = 4.36 cfs @ 11.97 hrs, Volume= 0.205 af Outflow = 4.36 cfs @ 11.97 hrs, Volume= 0.205 af, Atten= 0%, Lag= 0.0 min Primary = 4.36 cfs @ 11.97 hrs, Volume= 0.205 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 251.48' @ 11.97 hrs Device Routing Invert Outlet Devices #1 Primary 249.65' 12.0" Round Culvert L= 265.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 249.65' /237.55' S= 0.0457 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf Primary OutFlow Max=4.36 cfs @ 11.97 hrs HW=251.48' TW=241.09' (Dynamic Tailwater) L1=Culvert (Inlet Controls 4.36 cfs @ 5.55 fps) Summary for Pond 5P: CB-5 TO CB-1 Inflow Area = 1.434 ac, 35.13% Impervious, Inflow Depth > 4.35" for 100-year event Inflow = 10.45 cfs @ 11.99 hrs, Volume= 0.520 af Outflow = 10.45 cfs @ 11.99 hrs, Volume= 0.520 af, Atten= 0%, Lag= 0.0 min Primary = 10.45 cfs @ 11.99 hrs, Volume= 0.520 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 241.20' @ 11.99 hrs Device Routing Invert Outlet Devices #1 Primary 237.45' 15.0" Round Culvert L= 444.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 237.45' /220.30' S= 0.0386 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf Primary OutFlow Max=10.43 cfs @ 11.99 hrs HW=241.19' TW=220.14' (Dynamic Tailwater) L1=Culvert (Inlet Controls 10.43 cfs @ 8.50 fps) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 12 Summary for Pond 6P: CULVERT Inflow Area = 1.273 ac, 29.09% Impervious, Inflow Depth > 4.20" for 100-year event Inflow = 9.71 cfs @ 11.97 hrs, Volume= 0.446 af Outflow = 9.71 cfs @ 11.97 hrs, Volume= 0.446 af, Atten= 0%, Lag= 0.0 min Primary = 9.71 cfs @ 11.97 hrs, Volume= 0.446 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 263.55' @ 11.97 hrs Device Routing Invert Outlet Devices #1 Primary 261.50' 18.0" Round Culvert L= 40.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 261.50' /261.00' S= 0.0125 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.77 sf Primary OutFlow Max=9.71 cfs @ 11.97 hrs HW=263.55' TW=260.81' (Dynamic Tailwater) L1=Culvert (Inlet Controls 9.71 cfs @ 5.50 fps) Summary for Pond F1: Pretreatment Check Dam Inflow Area = 0.124 ac, 16.83% Impervious, Inflow Depth > 3.99" for 100-year event Inflow = 0.91 cfs @ 11.97 hrs, Volume= 0.041 af Outflow = 0.90 cfs @ 11.98 hrs, Volume= 0.039 af, Atten= 1%, Lag= 0.7 min Primary = 0.90 cfs @ 11.98 hrs, Volume= 0.039 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 222.17' @ 11.98 hrs Surf.Area= 360 sf Storage= 154 cf Plug-Flow detention time= 35.6 min calculated for 0.039 af(94% of inflow) Center-of-Mass det. time= 14.5 min ( 779.8 - 765.2 ) Volume Invert Avail.Storage Storage Description #1 221.00' 614 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) 221.00 0 0.0 0 0 0 222.00 292 113.0 97 97 1,018 223.00 780 175.0 516 614 2,446 Device Routing Invert Outlet Devices #1 Primary 222.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=0.90 cfs @ 11.98 hrs HW=222.17' TW=221.36' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 0.90 cfs @ 1.03 fps) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 13 Summary for Pond F2: Pretreatment Check Dam Inflow Area = 0.032 ac, 48.65% Impervious, Inflow Depth > 4.63" for 100-year event Inflow = 0.26 cfs @ 11.97 hrs, Volume= 0.012 af Outflow = 0.25 cfs @ 11.98 hrs, Volume= 0.010 af, Atten= 1%, Lag= 0.7 min Primary = 0.25 cfs @ 11.98 hrs, Volume= 0.010 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 221.07' @ 11.98 hrs Surf.Area= 233 sf Storage= 90 cf Plug-Flow detention time= 75.7 min calculated for 0.010 af(86% of inflow) Center-of-Mass det. time= 32.1 min ( 781.9 - 749.8 ) Volume Invert Avail.Storage Storage Description #1 220.00' 408 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) 220.00 0 0.0 0 0 0 221.00 218 95.0 73 73 720 222.00 468 110.0 335 408 985 Device Routing Invert Outlet Devices #1 Primary 221.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=0.25 cfs @ 11.98 hrs HW=221.07' TW=220.22' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 0.25 cfs @ 0.68 fps) Summary for Pond FB-1: FOREBAY Inflow Area = 4.011 ac, 21.31% Impervious, Inflow Depth > 4.06" for 100-year event Inflow = 29.83 cfs @ 11.97 hrs, Volume= 1.357 af Outflow = 29.19 cfs @ 11.97 hrs, Volume= 1.356 af, Atten= 2%, Lag= 0.1 min Primary = 29.19 cfs @ 11.97 hrs, Volume= 1.356 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Starting Elev= 260.00' Surf.Area= 1,543 sf Storage= 1,411 cf Peak Elev= 260.92' @ 12.11 hrs Surf.Area= 2,369 sf Storage= 3,200 cf (1,789 cf above start) Plug-Flow detention time= 20.5 min calculated for 1.323 af(97% of inflow) Center-of-Mass det. time= 3.0 min ( 766.7 - 763.7 ) Volume Invert Avail.Storage Storage Description #1 256.00' 6,104 cf Custom Stage Data (Irregular) Listed below(Recalc) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 14 Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 256.00 0 0.0 0 0 0 257.00 30 21.0 10 10 37 258.00 207 59.0 105 115 282 259.00 480 83.0 334 449 562 260.00 1,543 156.0 961 1,411 1,956 261.00 2,447 215.0 1,978 3,388 3,707 262.00 2,993 220.0 2,715 6,104 3,985 Device Routing Invert Outlet Devices #1 Primary 260.00' 15.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=29.17 cfs @ 11.97 hrs HW=260.81' TW=260.05' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 29.17 cfs @ 2.40 fps) Summary for Pond FB-2: FOREBAY Inflow Area = 2.107 ac, 37.61% Impervious, Inflow Depth > 4.37" for 100-year event Inflow = 15.69 cfs @ 11.98 hrs, Volume= 0.767 af Outflow = 13.07 cfs @ 11.97 hrs, Volume= 0.766 af, Atten= 17%, Lag= 0.0 min Primary = 13.07 cfs @ 11.97 hrs, Volume= 0.766 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Starting Elev= 219.50' Surf.Area= 2,058 sf Storage= 1,542 cf Peak Elev= 220.44' @ 12.10 hrs Surf.Area= 2,724 sf Storage= 3,791 cf (2,249 cf above start) Plug-Flow detention time= 36.0 min calculated for 0.731 af(95% of inflow) Center-of-Mass det. time= 3.6 min ( 761.6 - 758.0 ) Volume Invert Avail.Storage Storage Description #1 215.50' 5,426 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) 215.50 0 0.0 0 0 0 216.00 21 18.0 4 4 26 217.00 146 45.0 74 78 165 218.00 376 70.0 252 330 401 219.00 730 100.0 543 873 816 219.50 2,058 165.0 669 1,542 2,188 220.00 2,400 177.0 1,113 2,655 2,526 221.00 3,159 202.0 2,771 5,426 3,303 Device Routing Invert Outlet Devices #1 Primary 219.50' 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 Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 15 2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88 Primary OutFlow Max=13.08 cfs @ 11.97 hrs HW=220.06' TW=219.84' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 13.08 cfs @ 1.55 fps) Summary for Pond SMP-1: WET POND Inflow Area = 4.011 ac, 21.31% Impervious, Inflow Depth > 4.06" for 100-year event Inflow = 29.19 cfs @ 11.97 hrs, Volume= 1.356 af Outflow = 6.91 cfs @ 12.12 hrs, Volume= 1.325 af, Atten= 76%, Lag= 8.9 min Primary = 6.91 cfs @ 12.12 hrs, Volume= 1.325 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Starting Elev= 257.00' Surf.Area= 4,041 sf Storage= 7,092 cf Peak Elev= 260.91' @ 12.12 hrs Surf.Area= 8,909 sf Storage= 31,876 cf (24,784 cf above start) Plug-Flow detention time= 168.3 min calculated for 1.161 af (86% of inflow) Center-of-Mass det. time= 94.6 min ( 861.3 - 766.7 ) Volume Invert Avail.Storage Storage Description #1 254.50' 42,433 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) 254.50 1,760 180.0 0 0 1,760 255.00 2,156 194.0 977 977 2,187 256.00 3,041 224.0 2,586 3,563 3,207 257.00 4,041 252.0 3,529 7,092 4,294 258.00 5,108 281.0 4,564 11,656 5,552 259.00 6,283 305.0 5,685 17,342 6,709 260.00 7,686 345.0 6,973 24,315 8,803 261.00 9,031 361.0 8,349 32,664 9,769 262.00 10,527 386.0 9,769 42,433 11,301 Device Routing Invert Outlet Devices #1 Primary 257.00' 18.0" Round Culvert L= 87.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 257.00' /256.50' S= 0.0057 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.77 sf #2 Device 1 257.00' 12.0"W x 3.0" H Vert. Orifice/Grate C= 0.600 #3 Device 1 260.60' 24.0" x 24.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 261.00' 10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=6.91 cfs @ 12.12 hrs HW=260.91' TW=0.00' (Dynamic Tailwater) 1=Culvert (Passes 6.91 cfs of 13.76 cfs potential flow) �2=0rifice/Grate (Orifice Controls 2.34 cfs @ 9.37 fps) 3=0rifice/Grate (Weir Controls 4.56 cfs @ 1.83 fps) =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 16 Summary for Pond SMP-2: WET POND Inflow Area = 2.756 ac, 29.47% Impervious, Inflow Depth > 4.20" for 100-year event Inflow = 17.53 cfs @ 11.97 hrs, Volume= 0.965 af Outflow = 7.18 cfs @ 12.10 hrs, Volume= 0.946 af, Atten= 59%, Lag= 8.2 min Primary = 7.18 cfs @ 12.10 hrs, Volume= 0.946 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Starting Elev= 217.75' Surf.Area= 3,363 sf Storage= 6,478 cf Peak Elev= 220.44' @ 12.10 hrs Surf.Area= 5,652 sf Storage= 19,001 cf (12,523 cf above start) Plug-Flow detention time= 106.4 min calculated for 0.797 af (83% of inflow) Center-of-Mass det. time= 29.8 min ( 793.5 - 763.7 ) Volume Invert Avail.Storage Storage Description #1 214.25' 22,176 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) 214.25 0 0.0 0 0 0 215.00 1,255 155.0 314 314 1,913 216.00 1,930 180.0 1,580 1,894 2,600 217.00 2,712 206.0 2,310 4,204 3,422 218.00 3,595 232.0 3,143 7,347 4,354 219.00 4,573 257.0 4,074 11,421 5,357 220.00 5,652 282.0 5,103 16,524 6,463 221.00 5,652 282.0 5,652 22,176 6,745 Device Routing Invert Outlet Devices #1 Primary 217.75' 15.0" Round Culvert L= 112.0' CPP, square edge headwall, Ke= 0.500 Inlet/ Outlet Invert= 217.75' /217.00' S= 0.0067 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 1.23 sf #2 Device 1 217.75' 10.0"W x 8.0" H Vert. Orifice/Grate C= 0.600 #3 Device 1 220.00' 24.0" x 24.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Primary 220.50' 10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=7.18 cfs @ 12.10 hrs HW=220.44' TW=0.00' (Dynamic Tailwater) 1=Culvert (Barrel Controls 7.18 cfs @ 5.85 fps) �2=0rifice/Grate (Passes < 4.10 cfs potential flow) 3=0rifice/Grate (Passes < 7.58 cfs potential flow) =Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 17 Summary for Pond SMP-4.1: Wet Swale Inflow Area = 0.382 ac, 23.12% Impervious, Inflow Depth > 4.06" for 100-year event Inflow = 2.86 cfs @ 11.97 hrs, Volume= 0.129 af Outflow = 2.85 cfs @ 11.98 hrs, Volume= 0.127 af, Atten= 0%, Lag= 0.4 min Primary = 2.85 cfs @ 11.98 hrs, Volume= 0.127 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 221.37' @ 11.98 hrs Surf.Area= 298 sf Storage= 167 cf Plug-Flow detention time= 10.9 min calculated for 0.127 af(99% of inflow) Center-of-Mass det. time= 5.3 min ( 771.6 - 766.3 ) Volume Invert Avail.Storage Storage Description #1 220.00' 408 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) 220.00 0 0.0 0 0 0 221.00 218 95.0 73 73 720 222.00 468 110.0 335 408 985 Device Routing Invert Outlet Devices #1 Primary 221.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=2.85 cfs @ 11.98 hrs HW=221.37' TW=220.36' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 2.85 cfs @ 1.56 fps) Summary for Pond SMP-4.2: Wet Swale Inflow Area = 0.382 ac, 23.12% Impervious, Inflow Depth > 4.01" for 100-year event Inflow = 2.85 cfs @ 11.98 hrs, Volume= 0.127 af Outflow = 2.84 cfs @ 11.99 hrs, Volume= 0.126 af, Atten= 0%, Lag= 0.3 min Primary = 2.84 cfs @ 11.99 hrs, Volume= 0.126 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 220.36' @ 11.99 hrs Surf.Area= 234 sf Storage= 136 cf Plug-Flow detention time= 8.1 min calculated for 0.126 af (99% of inflow) Center-of-Mass det. time= 3.3 min ( 774.9 - 771.6 ) Volume Invert Avail.Storage Storage Description #1 219.00' 318 cf Custom Stage Data (Irregular) Listed below(Recalc) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 18 Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 219.00 0 0.0 0 0 0 220.00 182 72.0 61 61 414 221.00 341 83.0 257 318 570 Device Routing Invert Outlet Devices #1 Primary 220.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=2.83 cfs @ 11.99 hrs HW=220.36' TW=219.36' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 2.83 cfs @ 1.56 fps) Summary for Pond SMP-4.3: Wet Swale Inflow Area = 0.382 ac, 23.12% Impervious, Inflow Depth > 3.96" for 100-year event Inflow = 2.84 cfs @ 11.99 hrs, Volume= 0.126 af Outflow = 2.83 cfs @ 11.99 hrs, Volume= 0.125 af, Atten= 0%, Lag= 0.3 min Primary = 2.83 cfs @ 11.99 hrs, Volume= 0.125 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 219.36' @ 11.99 hrs Surf.Area= 230 sf Storage= 134 cf Plug-Flow detention time= 7.6 min calculated for 0.124 af (99% of inflow) Center-of-Mass det. time= 2.8 min ( 777.7 - 774.9 ) Volume Invert Avail.Storage Storage Description #1 218.00' 312 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) 218.00 0 0.0 0 0 0 219.00 180 73.0 60 60 426 220.00 332 83.0 252 312 572 Device Routing Invert Outlet Devices #1 Primary 219.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=2.83 cfs @ 11.99 hrs HW=219.36' TW=218.36' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 2.83 cfs @ 1.56 fps) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 19 Summary for Pond SMP-4.4: Wet Swale Inflow Area = 0.382 ac, 23.12% Impervious, Inflow Depth > 3.92" for 100-year event Inflow = 2.83 cfs @ 11.99 hrs, Volume= 0.125 af Outflow = 2.82 cfs @ 12.00 hrs, Volume= 0.122 af, Atten= 0%, Lag= 0.4 min Primary = 2.82 cfs @ 12.00 hrs, Volume= 0.122 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 218.36' @ 12.00 hrs Surf.Area= 298 sf Storage= 214 cf Plug-Flow detention time= 13.2 min calculated for 0.122 af(98% of inflow) Center-of-Mass det. time= 4.2 min ( 781.9 - 777.7 ) Volume Invert Avail.Storage Storage Description #1 216.50' 444 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) 216.50 0 0.0 0 0 0 218.00 235 90.0 118 118 648 219.00 428 101.0 327 444 841 Device Routing Invert Outlet Devices #1 Primary 218.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=2.82 cfs @ 12.00 hrs HW=218.36' TW=0.00' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 2.82 cfs @ 1.55 fps) Summary for Pond SMP-5.1: Wet Swale Inflow Area = 0.165 ac, 33.48% Impervious, Inflow Depth > 4.16" for 100-year event Inflow = 1.27 cfs @ 11.97 hrs, Volume= 0.057 af Outflow = 1.27 cfs @ 11.98 hrs, Volume= 0.056 af, Atten= 0%, Lag= 0.4 min Primary = 1.27 cfs @ 11.98 hrs, Volume= 0.056 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 220.22' @ 11.98 hrs Surf.Area= 204 sf Storage= 98 cf Plug-Flow detention time= 17.7 min calculated for 0.056 af(98% of inflow) Center-of-Mass det. time= 8.0 min ( 772.4 - 764.4 ) Volume Invert Avail.Storage Storage Description #1 219.00' 309 cf Custom Stage Data (Irregular) Listed below(Recalc) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 20 Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 219.00 0 0.0 0 0 0 220.00 172 72.0 57 57 414 221.00 341 83.0 252 309 570 Device Routing Invert Outlet Devices #1 Primary 220.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=1.27 cfs @ 11.98 hrs HW=220.22' TW=219.22' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 1.27 cfs @ 1.16 fps) Summary for Pond SMP-5.2: Wet Swale Inflow Area = 0.165 ac, 33.48% Impervious, Inflow Depth > 4.06" for 100-year event Inflow = 1.27 cfs @ 11.98 hrs, Volume= 0.056 af Outflow = 1.26 cfs @ 11.98 hrs, Volume= 0.055 af, Atten= 0%, Lag= 0.4 min Primary = 1.26 cfs @ 11.98 hrs, Volume= 0.055 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 219.22' @ 11.98 hrs Surf.Area= 203 sf Storage= 99 cf Plug-Flow detention time= 15.3 min calculated for 0.055 af(98% of inflow) Center-of-Mass det. time= 5.6 min ( 778.0 - 772.4 ) Volume Invert Avail.Storage Storage Description #1 218.00' 306 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) 218.00 0 0.0 0 0 0 219.00 173 73.0 58 58 426 220.00 332 83.0 248 306 572 Device Routing Invert Outlet Devices #1 Primary 219.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=1.26 cfs @ 11.98 hrs HW=219.22' TW=218.22' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 1.26 cfs @ 1.16 fps) Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 21 Summary for Pond SMP-5.3: Wet Swale Inflow Area = 0.165 ac, 33.48% Impervious, Inflow Depth > 3.97" for 100-year event Inflow = 1.26 cfs @ 11.98 hrs, Volume= 0.055 af Outflow = 1.26 cfs @ 11.99 hrs, Volume= 0.053 af, Atten= 1%, Lag= 0.5 min Primary = 1.26 cfs @ 11.99 hrs, Volume= 0.053 af Routing by Dyn-Stor-Ind method, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs/3 Peak Elev= 218.22' @ 11.99 hrs Surf.Area= 271 sf Storage= 133 cf Plug-Flow detention time= 18.8 min calculated for 0.053 af(97% of inflow) Center-of-Mass det. time= 5.7 min ( 783.7 - 778.0 ) Volume Invert Avail.Storage Storage Description #1 217.00' 404 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) 217.00 0 0.0 0 0 0 218.00 234 90.0 78 78 646 219.00 428 101.0 326 404 839 Device Routing Invert Outlet Devices #1 Primary 218.00' 5.0' long x 2.5' 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 Coef. (English) 2.48 2.60 2.60 2.60 2.64 2.65 2.68 2.75 2.74 2.76 2.89 3.05 3.19 3.32 Primary OutFlow Max=1.26 cfs @ 11.99 hrs HW=218.22' TW=0.00' (Dynamic Tailwater) L1=Broad-Crested Rectangular Weir (Weir Controls 1.26 cfs @ 1.16 fps) Summary for Link 4L: AP-1 Inflow Area = 2.606 ac, 0.00% Impervious, Inflow Depth > 3.48" for 100-year event Inflow = 12.78 cfs @ 12.07 hrs, Volume= 0.755 af Primary = 12.78 cfs @ 12.07 hrs, Volume= 0.755 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Summary for Link 5L: AP-2 Inflow Area = 24.563 ac, 4.58% Impervious, Inflow Depth > 3.55" for 100-year event Inflow = 90.54 cfs @ 12.14 hrs, Volume= 7.267 af Primary = 90.54 cfs @ 12.14 hrs, Volume= 7.267 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Post Development Type 1124-hr 100-year Rainfa11=6.20" Prepared by The LA Group Printed 4/8/2020 HydroCAD� 10.00-21 s/n 00439 O 2018 HydroCAD Software Solutions LLC Page 22 Summary for Link 6L: AP-3 Inflow Area = 7.568 ac, 12.78% Impervious, Inflow Depth > 3.68" for 100-year event Inflow = 22.14 cfs @ 12.17 hrs, Volume= 2.323 af Primary = 22.14 cfs @ 12.17 hrs, Volume= 2.323 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 4.00-20.00 hrs, dt= 0.01 hrs Attachment D Storm Data Stormwater Practice Sizing Job Name and# Kaydeross Ave East Water Quality Volume Calculation 4/8/2020 WQv= ��P)�R�)�A)�/12 Where: Rv=0.05 + 0.009(I) I = impervious cover in percent P = 90% rainfall (see Figure 4.1 in NYS Stormwater Management Design Manual) A=Area in acres Refer to the Stormwater Planning and Practice Worksheet for Full WQv and RRv Calculations Refer to the Vegetated Swale Worksheet for Vegetated Swale Calculations Provided WQv SMP-1 Pocket Pond DA: 2e % Impervious 21.32% Rv 0.24 90% Rainfall 1.15 Area in Square Feet 174,719 WQv Calculated = 4049 ft3 0.093 ac-ft SMP-1A Rooftop Disconnection % Impervious 100.00% Rv 0.95 90% Rainfall 1.15 Area in Square Feet 6,000 WQv Calculated = 546 ft3 0.013 ac-ft SMP-2 Pocket Pond DA: 2b, 2c, 3b, 3d % Impervious 29.46% Rv 0.32 90% Rainfall 1.15 Area in Square Feet 120,051 WQv Calculated = 3626 ft3 0.083 ac-ft SMP-2A Rooftop Disconnection % Impervious 100.00% Rv 0.95 90% Rainfall 1.15 Area in Square Feet 4,500 WQv Calculated = 410 ft� 0.009 ac-ft SMP-3 Rooftop Disconnection DA: 2A % Impervious 100.00% Rv 0.95 90% Rainfall 1.15 Area in Square Feet 9,000 WQv Calculated = 819 ft3 0.019 ac-ft SM P-4: Wet Swale DA:3e % Impervious 23.04% Rv 0.26 90% Rainfall 1.15 Area in Square Feet 16,640 WQv Calculated = 410 ft3 I 0.009 ac-ft SM P-5: Wet Swale DA: 3f % Impervious 33.33% Rv 0.35 90% Rainfall 1.15 Area in Square Feet 7,187 WQv Calculated = 241 ft3 I 0.006 ac-ft WQv Provided = 7675 ft3 I 0.232 ac-ft RRv Provided (Sum of Rooftop Disconnection)= 1775 ft3 I 0.041 ac-ft Job Name and# Kaydeross Ave East Minimum Runoff Reduction Volume 4/3/2020 RRv= �(P)(Rv*)(Ai)J/12 Where: Ai=(S)(Aic) Rv=0.05 +0.009(I)where I is 100%impervious Ai=impervious cover targeted for runoff reduction Aic= Total area of new impervious cover P=90%rainfall(see Figure 4.1 in NYS Stormwater Management Design Manual) S =Hydrologic Soil Group (HSG) Specific Reduction Factor(S) A=0.55,B=0.40, C=0.30, D=0.20 S (HSG D) 0.20 Aic 2.012 acres Rv(Minimum 0.2) 0.95 90%Rainfall 1.15 Ai 0.402 RRv= 0.037 acre feet= 1,596 ft� Job Name Kaydeross Avenue Channel Protection Volume Calculation Pre Development Step 1: Determine Qu P = 2.15 in. (1-yr. storm) Area= 34.7 acres CN= 77 Ia= 0.597 Ia/P = 0.28 Tc = 0.50 Hrs. Using Figure 4-II, TR-55 and Tc, determine Qu (csm/in) Qu= 475 csm/in Step 2: Determine Qo/Qi Using Figure B-1, DEC Manual Appendix B for T= 24 hrs. and Qu, determine Qo/Qi Qo/Qi = 0.03 5 Step 3: Determine Vs/Vr Vs/Vr= 0.682 - 1.43(Qo/Qi) + 1.64 (Qo/Qi)^2 - 0.804 (Qo/Qi)^3 Vs/Vr= 0.634 Step 4: Determine Qd Using Figure 2.1, TR-55 or SCS TR-16 and P, determine Qd (in of runof� Qd= 0.45 in Step 5: Determine Cpv Area= 34.74 acres Cpv= Vs = (Vs/Vr) * Qd * A/12 Cpv= 0.826 ac-ft Cpv= 35971 ft3 Cpv Req.= 35971 ft3 Job Name Kaydeross Avenue Channel Protection Volume Calculation Post Development Step 1: Determine Qu P = 2.15 in. (1-yr. storm) Area= 34.7 acres CN= 79 Ia= 0.532 Ia/P= 025 Tc = 0.44 Hrs. Using Figure 4-II, TR-55 and Tc, determine Qu (csm/in) Qu= 515 csm/in Sten 2: Determine Oo/Oi Using Figure B-1, DEC Manual Appendix B for T=24 hrs. and Qu, determine Qo/Qi Qo/Qi = 0.04 Step 3: Determine Vs/Vr Vs/Vr=0.682 - 1.43(Qo/Qi) + 1.64 (Qo/Qi)^2 - 0.804 (Qo/Qi)^3 Vs/Vr= 0.627 Step 4: Determine Od Using Figure 2.1, TR-55 or SCS TR-16 and P, determine Qd (in of runoffl Qd= 0.475 in Step 5: Determine Cpv Area= 34.74 acres Cpv=Vs=(Vs/Vr) * Qd * A/12 Cpv= 0.863 ac-ft Cpv Post= 37577 ft3 Cpv Pre= 35971 ft3 Cpv Req.= 1606 ft3 RRv Provided 1786 ft3 Cpv Req.= -180 ft3 Appendix C Map Set Appendix D SWPPP Inspection Form Kaydeross Avenue Conservation Subdivision WEEKLY SWPPP INSPECTION REPORT Ins ector Name: Date: Si nature re uired : Time: Weather: Ins ection #: Soil Conditions (dry, saturated, etc): Note: Digital photos,with date stamp required for all practices requiring corrective action, before and after, to be attached to the inspection report. YES NO N/A 1. ❑ ❑ ❑ Routine Inspection. Date of last inspection: 2. Inspection following rain event. Date/time of storm ending: ❑ ❑ ❑ Rainfall amount: Recorded by: 3. ❑ ❑ ❑ Is this a final site inspection? 4. ❑ ❑ ❑ Has site undergone final stabilization? ❑ ❑ ❑ If so, have all temporary erosion and sediment controls been removed? Site Disturbance (Indicate Locations on Plan) YES NO N/A 1. ❑ ❑ ❑ Areas previously disturbed, but have not undergone active site work in the last 14 days? 2. ❑ ❑ ❑ Areas disturbed within last 14 days? 3. ❑ ❑ ❑ Areas expected to be disturbed in next 14 days? 4. � � � Do areas of steep slopes or complex stabilization issues exist? If"YES" explain: 5. � � � Are there currently more than 5 acres of disturbed soil at the site? If so make sure there is an approval letter from NYS DEC. Additional Comments: Inspection of Erosion and Sediment Control Devices Type of Control Device Accumulation (if any) in % Repairs/Maintenance Needed 1. 2. 3. 4. 5. 6. Stabilization/Runoff YES NO N/A 1. ❑ ❑ ❑ Are all existing disturbed areas contained by control devices? Type of devices: 2• ❑ ❑ ❑ Are there areas that require stabilization within the next 14 days? Specify Area: 3. ❑ ❑ ❑ Have stabilization measures been initiated in inactive areas? 4• ❑ ❑ ❑ Is there current snow cover or frozen ground conditions? 5• ❑ ❑ ❑ Rills or gullies? 6• ❑ ❑ ❑ Slumping/deposition? 7• ❑ ❑ ❑ Loss of vegetation? 8. ❑ ❑ ❑ Lack of germination? 9. ❑ ❑ ❑ Loss of mulching? Receiving Structures/Water Bodies (Indicate locations where runoff leaves the project site on the site plan) YES NO N/A 1. ❑ ❑ ❑ Surface water swale or natural surface waterbody? If natural waterbody: Is waterbody located ❑ onsite, or ❑ adjacent to property boundary? Description of condition: 2• ❑ ❑ ❑ Municipal or community system? Inspect locations where runoff from project site enters the receiving waters and indicate if there is evidence of: a• ❑ ❑ ❑ Rills or gullies? b• ❑ ❑ ❑ Slumping/deposition? �• ❑ ❑ ❑ Loss of vegetation? d• ❑ ❑ ❑ Undermining of structures? e. ❑ ❑ ❑ Was there a discharge into the receiving water on the day of inspection? f. ❑ ❑ ❑ Is there evidence of turbidity, sedimentation, or oil in the receiving waters? Additional Comments: Inspection of Post-Construction Stormwater Management Control Devices Type of Control Device Phase of Construction Repairs/Maintenance Needed 1. 2. 3. 4. General Site Condition YES NO N/A 1. ❑ ❑ ❑ Have action items from previous reports been addressed? 2. ❑ ❑ ❑ Does routine maintenance of protection components occur on a regular basis? 3. ❑ ❑ ❑ Does cleaning and/or sweeping affected roadways occur, at minimum, daily? 4• ❑ ❑ ❑ Is debris and litter removed on a monthly basis, or as necessary? 5• ❑ ❑ ❑ Is the site maintained in an orderly manner? Describe the condition of all natural waterbodies within or adjacent to the Project that receive runoff from the site: Contractors progress over last 7 days: Anticipated work to be begun in the next 7 days: Additional Comments: Visual Observations YES NO N/A 1. ❑ ❑ ❑ All erosion and sediment control measures have been installed/constructed? 2• ❑ ❑ ❑ All erosion and sediment control measures are being maintained properly? SUMMARY OF ACTION ITEMS TO REPAIR/REPLACE/MAINTAIN/CORRECT DEFICIENCIES Action Reported To (no signature required): Company: Appendix E Other SWPPP Forms Construction Sequence SWPPP Plan Changes Spill Response Form Stormwater Management Practice Maintenance Log The operator shall prepare a summary of construction status using the Construction Sequence Form below once every month. Significant deviations to the sequence and reasons for those deviations (i.e. weather, subcontractor availability, etc.), shall be noted by the contractor. The schedule shall be used to record the dates for initiation of construction, implementation of erosion control measures, stabilization, etc. A copy of this table will be maintained at the construction site and updated in addition to the individual Inspection Reports completed for each inspection. Construction Sequence Form Construction Activities Date (Identify name of planned practices) Complete 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. STORM WATER POLLUTION PREVENTION PLAN PLAN CHANGES, AUTHORIZATION, AND CHANGE CERTIFICATION CHANGES REQUIRED TO THE POLLUTION PREVENTION PLAN: REASONS FOR CHANGES: REQUESTED BY: DATE: AUTHORIZED BY: DATE: CERTIFICATION OF CHANGES: 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 gathered and evaluated 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 false statements made herein are punishable as a Class A misdemeanor pursuant to Section 210.45 of the penal code. SIGNATURE: DATE: SPILL RESPONSE REPORT Within 1 hour of a spill discovery less than 2 gallons in volume the following must be notified: Witt Construction (518) 587-4113 Within 1 hour of a spill discovery greater than 2 gallons the following must be notified: Witt Construction NYSDEC Spill Response Hotline 1-800-457-7362 Spill Response Contractor Material Spilled: Approximate Volume: Location: Distance to nearest down gradient drainage: Distance to nearest down gradient open water: Temporary control measures in place: Appendix F SPDES General Permit GP-0-20-001 NEW YORK p@PartmenC of PREFACE `a�::�`i„H��. Enviranmental —'� Conservation � Pursuant to Section 402 of the Clean Water Act("CWA"),stormwater discharges from certain cons[ruc[ion ac[ivi[ies are unlawful unless they are authorized by a Na[ional NF6"J YOHK STATE Pollu[an[Discharge Elimina[ion Sys[em(`NPDES")permit or by a state permit program. ❑EPARTMENT pF ENVIROf3MENTAI.C�NStRVRTION New York administers the approved State Pollutant Discharge Elimination System (SPDES)program with permits issued in accordance with the New York State SPOES GE.NERAk..PERMIT Environmental Conservation Law(ECL)Article 17,Titles 7,8 and Article 70. FD�R STORNIWATEfi OISCFWRGES From An owneroropera[orof a cons[ruc[ion ac[ivirythat is eligible for coverage under this permit must obtain coverage prior to the commencemen[of cons[ruc[ion ac[iviry. CONSTRl1CTI�N ACTIV17Y Activities that fit the defnition of"cons[ruc[ion ac[iviry',as defined under 40 CFR 122.26(b)(14)(x),(15)(i),and(15)(ii),constitute construction of a poin[source and Permit Mo.GP-p-PO-001 therefore,pursuantto ECL section 17-0505 and 17-0701,the owneroropera[ormust have coverage under a SPDES permit prior to commencing conshuc[ion ac[ivity.The Issued Pursuanl la Art�cle 17,7itles 7.8 and Article 70 owneroropera[orcannotwait until there is an actual discharge from the cons[ruc[ion si[e of the Environmealal Conservation Law to obtain permit coverage. *Note:The italicized words/phrases within this permit are defined in Appendix A. Effective C)ate January 29,292U Exp�ration C1ate:January 28,2Q25 Ja:�ri J.Feryi+san Chief Pennit AdminisYra[ar 4_.'f_ __,� ! ��', _ ,-�_ . � _ _ ;, , . •r.o ;;� . . .�ulhorixed Src7nature � Oate AtlC�ess NYS tJEC ❑IvYsian of Enviranmen}al f�ermits 625 Braadway,41h Floor Ai6any.N.Y. 92233-1?50 NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION K. Requirementto Obtain Coverage Under an Alternative Permit...........................35 SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES FROM L. Proper Operation and Maintenance....................................................................36 CONSTRUCTION ACTIVITIES M. Inspection and Entry...........................................................................................36 N. PermitActions.....................................................................................................37 Table of Contents o. oefinitions...........................................................................................................37 P. Re-OpenerClause..............................................................................................37 Part 1.PERMIT COVERAGE AND LIMITATIONS.............................................................1 Q� Penalties for Falsification of Forms and Reports.................................................37 A. PermitApplication.................................................................................................1 R. Other Permits......................................................................................................38 B. Effluent Limitations Applicable to Discharges from Construction Activities...........1 APPENDIX A—Acronyms and Definitions.......................................................................39 C. Post-construction Stormwater Management Practice Requirements....................4 Acronyms......................................................................................................................39 D. Maintainin Water Qualit .. . . . . 8 Definitions.....................................................................................................................40 9 Y............................................................................... APPENDIX B—Required SWPPP Components by Project Type....................................48 E. Eligibility UnderThis General Permit.....................................................................9 F. Activities Which Are Ineligible for Coverage Under This General Permit..............9 Table 1..........................................................................................................................48 Table2..........................................................................................................................50 Part II.PERMIT COVERAGE...........................................................................................12 APPENDIX C—Watersheds Requiring Enhanced Phosphorus Removal........................52 A. How to Obtain Coverage.....................................................................................12 APPENDIX D—Watersheds with Lower Disturbance Threshold.....................................58 B. Notice of Intent(NOI)Submittal..........................................................................13 APPENDIX E—303(d)Segments Impaired by Construction Related Pollutant(s)...........59 C. PermitAuthorization............................................................................................13 . D. General Requirements For Owners or Operators With Permit Coverage...........15 APPENDIX F—List of NYS DEC Regional Offices..........................................................65 E. Permit Coverage for Discharges Authorized Under GP-0-15-002.......................17 F. Change of Owner or Operator.............................................................................17 Part III.STORMWATER POLLUTION PREVENTION PLAN(SWPPP)...........................18 A. General SWPPP Requirements..........................................................................18 B. Required SWPPP Contents................................................................................20 C. Required SWPPP Components by ProjectType.................................................24 Part IV.INSPECTION AND MAINTENANCE REQUIREMENTS.....................................24 A. General Construction Site Inspection and Maintenance Requirements..............24 B. Contractor Maintenance Inspection Requirements.............................................24 C. Qualified Inspector Inspection Requirements......................................................25 Part V.TERMINATION OF PERMIT COVERAGE...........................................................29 A. Termination of Permit Coverage.........................................................................29 Part VI.REPORTING AND RETENTION RECORDS......................................................31 A. Record Retention................................................................................................31 B. Addresses...........................................................................................................31 Part VII.STANDARD PERMIT CONDITIONS..................................................................31 A. Duty to Comply....................................................................................................31 B. Continuation of the Expired General Permit........................................................32 C. Enforcement........................................................................................................32 D. Need to Halt or Reduce Activity Not a Defense...................................................32 E. DutytoMitigate...................................................................................................33 F. Duty to Provide Information.................................................................................33 G. Other Information................................................................................................33 H. Signatory Requirements......................................................................................33 I. PropertyRights...................................................................................................35 J. Severability..........................................................................................................35 (Parc i) Part 1.PERMIT COVERAGE AND LIMITATIONS (��rc�.B.�� deviation or alternative design and provide information which demonstrates that A. Permit Application the deviation or alternative design is equivalen[to the technical standard. This permit authorizes stormwater discharges to surface wa[ers of[he S[a[e from a. Erosion and Sediment Controls.Design,install and maintain effective the following cons[ruc[ion ac[ivi[ies identified within 40 CFR Parts 12226(b)(14)(x), erosion and sediment controls to minimize the discharge of pollu[an[s and 12226(b)(15)(i)and 122.26(b)(15)(ii),provided all of the eligibility provisions of this prevent a violation of the wa[er qualiry s[andards.At a minimum,such permit are met: controls must be designed,installed and maintained to: 1. Cons[ruc[ion ac[ivi[ies involving soil disturbances of one(1)or more acres; (i) Minimize soil erosion through application of runoff control and soil including disturbances of less than one acre that are part of a largercommon stabilization control measure to minimize pollu[an[discharges; plan of developmen[or sale that will ultimately disturb one or more acres of land;excluding rou[ine main[enance ac[iviry that is pertormed to maintain the (ii) Control stormwater discharges,including both peak flowrates and total original line and grade,hydraulic capacity or original purpose of a facility; stormwater volume,to minimize channel and s[reambank erosion and scour in the immediate vicinity of the discharge points; 2. Cons[ruc[ion ac[ivi[ies involving soil disturbances of less than one(1)acre where the Department has determined that a SPDES permit is required for (iii) Minimize the amount of soil exposed during cons[ruc[ion ac[iviry; stormwater discharges based on the potential for contribution to a violation of a wa[er qualiry s[andard or for significant contribution of pollu[an[s to surtace (iv) Minimize the disturbance of s[eep slopes; wa[ers of[he S[a[e. (v) Minimize sediment discharges from the site; 3. Cons[ruc[ion ac[ivi[ies located in the watershed(s)identified in Appendix D that involve soil disturbances between five thousand(5,000)square feet and one (vi) Provide and maintain na[ural buffers around surtace waters,direct (1)acre of land. stormwater to vegetated areas and maximize stormwater infiltration to reduce pollu[an[discharges,unless infeasible; B. Effluent Limitations Applicable to Discharges from Construction Activities (vii) Minimize soil compaction.Minimizing soil compaction is not required where the intended function of a specific area of the site dictates that it Discharges authorized by this permit must achieve, at a minimum, the effluent be compacted; limitations in Part I.B.1.(a)—(f)of this permit.These limitations representthe degree of effluent reduction attainable by the application of best practicable technology currently (viii)Unless infeasible,preserve a sufficient amount of topsoil to complete available. soil restoration and establish a uniform,dense vegetative cover;and 1. ErosionandSedimentControlRequirements-Theowneroropera[ormust select,design,install,implement and maintain control measures to minimize (ix) Minimize dust.On areas of exposed soil,minimize dust through the the discharge of pollu[an[s and prevent a violation of the wa[er quality appropriate application of water or other dust suppression techniques s[andards.The selection,design,installation,implementation,and to control the generation of pollutants that could be discharged from maintenance of these control measures must meet the non-numeric effluent the site. limitations in Part I.B.1.(a)—(f)of this permit and be in accordance with the New York State Standards and Specifications for Erosion and Sediment b. Soil Stabilization.In areas where soil disturbance activity has temporarily Control,dated November 2016,using sound engineering judgment.Where or permanently ceased,the application of soil stabilization measures must control measures are not designed in conformance with the design criteria be initiated by the end of the next business day and completed within included in the technical standard,the owneroropera[or must include in the fourteen(14)days from the date the current soil disturbance activity ceased. S[ormwa[er Pollu[ion Preven[ion Plan("SWPPP")the reason(s)for the For construction sites that direc[ly discharge to one of the 303(d)segments 1 2 (Parc i e�.e) (Parc i.e.�.e.�iip listed in Appendix E or is located in one of the watersheds listed in (iii) Fuels,oils,or other pollu[an[s used in vehicle and equipment operation Appendix C,the application of soil stabilization measures must be initiated and maintenance; by the end of the next business day and completed within seven(7)days from the date the current soil disturbance activity ceased.See Appendix A (iv) Soaps or solvents used in vehicle and equipment washing;and for definition of Temporarily Ceased. (v) Toxic or hazardous substances from a spill or other release. c. Dewatering.Discharges from dewa[ering activities,including discharges from dewa[ering of trenches and excavations,must be managed by f. Surtace Outlets.When discharging from basins and impoundments,the appropriate control measures. outlets shall be designed,constructed and maintained in such a manner that sediment does not leave the basin or impoundment and that erosion at d. Pollution Prevention Measures.Design,install,implement,and maintain or below the outlet does not occur. effective pollution prevention measures to minimize the discharge of C. Post-construction Stormwater Management Practice Requirements pollu[an[s and prevent a violation of the wa[er quality s[andards.At a minimum,such measures must be designed,installed,implemented and 1. The owneroropera[orof a cons[ruc[ion ac[ivirythat requires post-construction maintained to: stormwater management practices pursuant to Part III.C.of this permit must select,design,install,and maintain the practices to meetthe pertormance (i) Minimize the discharge of pollu[an[s from equipment and vehicle cri[eria in the New York State Stormwater Management Design Manual washing,wheel wash water,and other wash waters.This applies to ("Design Manuaf'),dated January 2015,using sound engineering judgment. washing operations that use clean water only.Soaps,detergents and Where post-construction stormwater management practices("SMPs")are not solvents cannot be used; designed in conformance with the pertormance cri[eria in the Design Manual, the owner or opera[or must include in the SWPPP the reason(s)for the (ii) Minimize the exposure of building materials,building products, deviation or alternative design and provide information which demonstrates that construction wastes,trash,landscape materials,fertilizers,pesticides, the deviation or alternative design is equivalen[to the technical standard. herbicides,detergents,sanitary waste,hazardous and toxic waste,and other materials present on the site to precipitation and to stormwater. 2. The owneror opera[or of a cons[ruc[ion ac[iviry that requires post-construction Minimization of exposure is not required in cases where the exposure stormwater management practices pursuantto Part III.C.of this permit must to precipitation and to stormwater will not result in a discharge of design the practices to meet the applicable sizing cri[eria in Part I.C.2.a.,b.,c. pollu[an[s,or where exposure of a specific material or product poses or d.of this permit. little risk of stormwater contamination(such as final products and materials intended for outdoor use);and a. Sizing Criteria for New Development (iii) Prevent the discharge of pollu[an[s from spills and leaks and (i) Runoff Reduction Volume("RRd'): Reduce the total Water Quality implement chemical spill and leak prevention and response Volume("WQv")by application of RR techniques and standard SMPs procedures. with RRv capacity.The total WQv shall be calculated in accordance with the criteria in Section 4.2 of the Design Manual. e. Prohibited Discharges.The following discharges are prohibited: (ii) Minimum RRv and Treatment of Remaining Total WQv:Construction (i) Wastewater from washout of concrete; activities that cannot meet the criteria in Part I.C.2.a.(i)of this permit due to site limitations shall direct runoff from all newly constructed (ii) Wastewater from washout and cleanout of stucco,paint,form release impervious areas to a RR technique or standard SMP with RRv oils,curing compounds and other construction materials; capacity unless infeasible.The specific site limitations that preventthe reduction of 100%of the WQv shall be documented in the SWPPP. 3 4 (Parc i.cza.�ii) (Parc i c z.e i) For each impervious area that is not directed to a RR technique or calculated in accordance with the criteria in Section 10.3 of the Design standard SMP with RRv capacity,the SWPPP must include Manual. documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. (ii) Minimum RRv and Treatment of Remaining Total WQv:Cons[ruc[ion In no case shall the runoff reduction achieved from the newly ac[ivi[ies that cannot meet the criteria in Part I.C.2.b.(i)of this permit constructed impervious areas be less than the Minimum RRv as due to si[e limi[a[ions shall direct runoff from all newly constructed calculated using the criteria in Section 4.3 of the Design Manual. impervious areas to a RR technique or standard SMP with RRv The remaining portion of the total WQv that cannot be reduced shall be capacity unless infeasible.The specific si[e limi[a[ions that prevent the treated by application of standard SMPs. reduction of 100%of the WQv shall be documented in the SWPPP. For each impervious area that is not directed to a RR technique or (iii) Channel Protection Volume("Cpv"):Provide 24 hour extended standard SMP with RRv capacity,the SWPPP must include detention of the post-developed 1-year,24-hour storm event; documentation which demonstrates that all options were considered remaining after runoff reduction.The Cpv requirement does not apply and for each option explains why it is considered infeasible. when: In no case shall the runoff reduction achieved from the newly (1)Reduction of the entire Cpv is achieved by application of runoff constructed impervious areas be less than the Minimum RRv as reduction techniques or infiltration systems,or calculated using the criteria in Section 10.3 of the Design Manual. (2)The site discharges directly to tidal waters,or fifth order or larger The remaining portion of the total WQv that cannot be reduced shall be streams. treated by application of standard SMPs. (iv) Overbank Flood Control Criteria("Qp"):Requires storage to attenuate (iii) Channel Protection Volume(Cpv):Provide 24 hour extended detention the post-development 10-year,24-hour peak discharge rate(Qp)to of the post-developed 1-year,24-hour storm event;remaining after predevelopment rates.The Qp requirement does not apply when: runoff reduction.The Cpv requirement does not apply when: (1)the site discharges directly to tidal waters or fifth order or larger (1)Reduction of the entire Cpv is achieved by application of runoff streams,or reduction techniques or infiltration systems,or (2)A downstream analysis reveals that overbank control is not (2)The site discharges directly to tidal waters,or fifth order or larger required. streams. (v) Extreme Flood Control Criteria("QP'):Requires storage to attenuate (iv) Overbank Flood Control Criteria(Qp):Requires storage to attenuate the post-development 100-year,24-hour peak discharge rate(Qf)to the post-development 10-year,24-hour peak discharge rate(Qp)to predevelopment rates.The Qf requirement does not apply when: predevelopment rates.The Qp requirement does not apply when: (1)the site discharges directly to tidal waters or fifth order or larger (1)the site discharges directly to tidal waters or fifth order or larger streams,or streams,or (2)A downstream analysis reveals that overbank control is not (2)A downstream analysis reveals that overbank control is not required. required. b. Sizing Criteria for New Development in Enhanced Phosphorus (v) Extreme Flood Control Criteria(Qf):Requires storage to attenuate the Removal Watershed post-development 100-year,24-hour peak discharge rate(Qf)to predevelopment rates.The Qf requirement does not apply when: (i) Runoff Reduction Volume(RRv): Reduce the total Water Quality (1)the site discharges directly to tidal waters or fifth order or larger Volume(WQv)by application of RR techniques and standard SMPs streams,or with RRv capacity.The total WQv is the runoff volume from the 1-year, (2)A downstream analysis reveals that overbank control is not 24 hour design storm over the post-developed watershed and shall be required. 5 6 (Pam cz.q (Pam cz.d) c. Sizing Criteria for Redevelopment Activity d. Sizing Criteria for Combination of Redevelopment Activity and New Development (i) Water Quality Volume(WQv):The WQv treatment objective for Construction projects that include both New Development and Redevelopment redevelopmen[ac[ivity shall be addressed by one of the following Activity shall provide post-construction stormwater management controls that options.Redevelopmen[ac[ivi[ies located in an Enhanced Phosphorus Removal Watershed(see Part III.B.3.and Appendix C of this permit) meet the sizing criteria calculated as an aggregate of the Sizing Criteria in Part shall calculate the WQv in accordance with Section 10.3 of the Design I.C.2.a.or b.of this permit for the New Development portion of the project and Manual.All other redevelopmen[ac[ivi[ies shall calculate the WQv in Part I.C.2.c of this permitfor RedevelopmentActivity portion of the project. accordance with Section 42 of the Design Manual. (1)Reduce the existing impervious cover by a minimum of 25%of the D. Maintaining Water Quality total disturbed, impervious area. The Soil Restoration criteria in Section 5.1.6 of the Design Manual must be applied to all newly The Department expects that compliance with the conditions of this permit will control created pervious areas,or discharges necessary to meet applicable wa[er quality s[andards.It shall be a violation (2)Capture and treat a minimum of 25%of the WQv from the disturbed, of the ECL for any discharge to either cause or contribute to a violation of wa[er qualiry impervious area by the application of standard SMPs;or reduce 25% s[andards as contained in Parts 700 through 705 of Title 6 of the Official Compilation of of the WQv from the disturbed,impervious area by the application of Codes,Rules and Regulations of the State of New York,such as: RR techniques or standard SMPs with RRv capacity.,or (3)Capture and treat a minimum of 75%of the WQv from the disturbed, 1. There shall be no increase in turbidity thatwill cause a substantial visible contrast impervious area as well as any additional runoff from tributary areas to natural conditions; by application of the alternative practices discussed in Sections 9.3 and 9.4 of the Design Manual.,or 2. There shall be no increase in suspended,colloidal or settleable solids that will (4)Application of a combination of 1, 2 and 3 above that provide a cause deposition or impair the waters for their best usages;and weighted average of at least two of the above methods.Application of this method shall be in accordance with the criteria in Section 92.1(B)(IV)of the Design Manual. 3. There shall be no residue from oil and floating substances,nor visible oil film,nor globules of grease. If there is an existing post-construction stormwater management practice located on the site that captures and treats runoff from the If there is evidence indicating that the stormwater discharges authorized by this permit impervious area that is being disturbed, the WQv treatment option are causing,have the reasonable potential to cause,or are contributing to a violation of selected must,at a minimum,provide treatment equal to the treatment the wa[er quality s[andards;the owner or opera[or must take appropriate corrective that was being provided by the existing practice(s)if that treatment is action in accordance with Part IV.C.5. of this general permit and document in greater than the treatment required by options 1—4 above. accordance with Part IV.C.4. of this general permit. To address the wa[er quality s[andard violation the owner or opera[or may need to provide additional information, (ii) Channel Protection Volume(Cpv): Not required if there are no include and implement appropriate controls in the SWPPP to correct the problem,or changes to hydrology that increase the discharge rate from the project obtain an individual SPDES permit. site. If there is evidence indicating that despite compliance with the terms and conditions of this general permit it is demonstrated that the stormwater discharges authorized by this (iii) Overbank Flood Control Criteria(Qp):Not required if there are no permit are causing or contributing to a violation of wa[er quality s[andards,or if the changes to hydrology that increase the discharge rate from the project Department determines that a modification of the permit is necessary to prevent a site. violation of wa[er qualiry s[andards,the authorized discharges will no longer be eligible for coverage underthis permit. The Department may require the owneroropera[orto (iv) Extreme Flood Control Criteria(Qf):Not required if there are no obtain an individual SPDES permitto continue discharging. changes to hydrology that increase the discharge rate from the project site 7 8 (Parc i.e) (Parc i F a) E. Eligibility Under This General Permit opera[or has obtained a permit issued pursuantto 6 NYCRR Part 182 forthe project or the Department has issued a letter of non-jurisdiction for the project. 1. This permit may authorize all discharges of stormwaterfrom cons[ruc[ion All documentation necessary to demonstrate eligibility shall be maintained on ac[ivity to surtace wa[ers of[he S[a[e and groundwa[ers except for ineligible site in accordance with Part II.D2 of this permit; discharges identified under subparagraph F.of this Part. 5. Discharges which either cause or contribute to a violation of wa[er qualiry 2. Except for non-stormwater discharges explicitly listed in the next paragraph, s[andards adopted pursuant to the ECL and its accompanying regulations; this permit only authorizes stormwater discharges;including stormwater runoff, snowmelt runoff,and surtace runoff and drainage,from cons[ruc[ion ac[ivi[ies. 6. Cons[ruc[ion ac[ivi[ies for residential,commercial and institutional projects: 3. Notwithstanding paragraphs E.1 and E2 above,the following non-stormwater a. Where the discharges from the cons[ruc[ion ac[ivi[ies are tributary to waters discharges are authorized by this permit: those listed in 6 NYCRR 750- of the state classified as AA or AA-s;and 12(a)(29)(vi),with the following exception:"Discharges from firefighting activities are authorized only when the firefighting activities are b. Which are undertaken on land with no existing impervious cover,and emergencies/unplanned";waters to which other components have not been added that are used to control dust in accordance with the SWPPP;and c. Which disturb one(1)or more acres of land designated on the current uncontaminated discharges from cons[ruc[ion si[e de-watering operations.All United States Department of Agriculture("USDA")Soil Survey as Soil non-stormwater discharges must be identified in the SWPPP. Under all Slope Phase"D",(provided the map unit name is inclusive of slopes greater circumstances,the owneror opera[or must still comply with wa[er quality than 25%),or Soil Slope Phase"E"or"F"(regardless of the map unit s[andards in Part I.D of this permit. name),or a combination of the three designations. 4. The owneroropera[or must maintain permit eligibility to discharge under this 7. Cons[ruc[ion ac[ivi[ies for linear transportation projects and linear utility permit. Any discharges that are not compliant with the eligibility conditions of projects: this permit are not authorized by the permit and the owneroropera[or must either apply for a separate permitto cover those ineligible discharges ortake a. Where the discharges from the cons[ruc[ion ac[ivi[ies are tributary to waters steps necessary to make the discharge eligible for coverage. of the state classified as AA or AA-s;and F. Activities Which Are Ineligible for Coverage Under This General Permit b. Which are undertaken on land with no existing impervious cover,and All of the following are not authorized by this permit: 1. Discharges after conshuc[ion ac[ivi[ies have been completed and the site has c.Which disturb two(2)or more acres of land designated on the current USDA undergone final s[abiliza[ion; Soil Survey as Soil Slope Phase"D"(provided the map unit name is inclusive of slopes greater than 25%),or Soil Slope Phase"E"or"F"(regardless of the map 2. Discharges that are mixed with sources of non-stormwater other than those unit name),or a combination of the three designations. expressly authorized under subsection E.3.of this Part and identified in the SWPPP required by this permit; 3. Discharges that are required to obtain an individual SPDES permit or another SPDES general permit pursuant to Part VII.K.of this permit; 4. Cons[ruc[ion ac[ivi[ies or discharges from conshuc[ion ac[ivi[ies that may adversely affect an endangered or[hrea[ened species unless the owneror 9 10 (Parc i F.a) (Parc i.F a.q 8. Cons[ruc[ion ac[ivi[ies that have the potential to affect an his[oric property, (i) No Affect unless there is documentation that such impacts have been resolved.The (ii) No Adverse Affect following documentation necessary to demonstrate eligibility with this (iii) Executed Memorandum of Agreement,or requirement shall be maintained on site in accordance with Part II.D.2 of this permit and made available to the Department in accordance with Part VII.F of d. Documentation that: this permit: (i) SHPA Section 14.09 has been completed by NYS DEC or another state a. Documentation that the cons[ruc[ion ac[ivity is not within an archeologically agency. sensitive area indicated on the sensitivity map,and that the cons[ruc[ion ac[ivity is not located on or immediately adjacent to a property listed or 9. Discharges from conshuc[ion ac[ivi[ies that are subject to an existing SPDES determined to be eligible for listing on the National or State Registers of individual or general permit where a SPDES permitfor cons[ruc[ion ac[iviry has Historic Places,and that there is no new permanent building on the been terminated or denied;or where the owneroropera[orhas failed to renew cons[ruc[ion si[e within the following distances from a building,structure,or an expired individual permit. object that is more than 50 years old,or if there is such a new permanent building on the cons[ruc[ion si[e within those parameters that NYS Office of Parks,Recreation and Historic Preservation(OPRHP),a Historic Part II.PERMIT COVERAGE Preservation Commission of a Certified Local Government,or a qualified A. How to Obtain Coverage preservation professional has determined that the building,structure,or object more than 50 years old is not historically/archeologically significant. 1. An owneror opera[or of a cons[ruc[ion ac[iviry that is not subject to the requirements of a regulated,traditional land use control MS4 must first prepare • 1-5 acres of disturbance-20 feet a SWPPP in accordance with all applicable requirements of this permit and • 5-20 acres of disturbance-50 feet then submit a completed Notice of Intent(NOI)to the Department to be • 20+acres of disturbance-100 feet,or authorized to discharge under this permit. b. DEC consultation form sent to OPRHP,and copied to the NYS DEC Agency 2. An owneror opera[or of a cons[ruc[ion ac[iviry that is subject to the Historic Preservation Officer(APO),and requirements of a regula[ed,[radi[ional land use conhol MS4 must first prepare (i) the State Environmental Quality Review(SEQR)Environmental a SWPPP in accordance with all applicable requirements of this permit and Assessment Form(EAF)with a negative declaration or the Findings then have the SWPPP reviewed and accepted by the regula[ed,[radi[ional land Statement,with documentation of OPRHP's agreement with the use conhol MS4 prior to submitting the NOI to the Department.The owner or resolution;or opera[orshall have the"MS4 SWPPP Acceptance"form signed in accordance (ii) documentation from OPRHP thatthe cons[ruc[ion ac[ivirywill result in with Part VII.H.,and then submitthatform along with a completed NOI to the No Impact;or Department. (iii) documentation from OPRHP providing a determination of No Adverse Impact;or 3. The requirementfor an owneroropera[orto have its SWPPP reviewed and (iv) a Letter of Resolution signed by the owner/operator,OPRHP and the accepted by the regula[ed,[radi[ional land use conhol MS4 prior to submitting DEC APO which allows for this cons[ruc[ion ac[iviry to be eligible for the NOI to the Department does not apply to an owner or opera[orthat is coverage under the general permit in terms of the State Historic obtaining permit coverage in accordance with the requirements in Part II.F. Preservation Act(SHPA);or (Change of Owner or Opera[or)or where the owner or opera[orof the cons[ruc[ion ac[ivity is the regula[ed,hadi[ional land use conhol MS4. This c. Documentation of satisfactory compliance with Section 106 of the National exemption does not apply to cons[ruc[ion ac[ivi[ies subject to the New York City Historic Preservation Actfor a coterminous project area: Administrative Code. 11 12 (Parcu e) (Parcu cz.e) B. Notice of Intent(NOI)Submittal must submit a preliminary SWPPP to the appropriate DEC Permit Administrator atthe Regional Office listed in Appendix F atthe time all other 1. Prior to December 21,2020,an owner or operator shall use either the necessary UPA permit applications are submitted.The preliminary SWPPP electronic(eN01)or paperversion of the NOI thatthe Department prepared. must include sufficient information to demonstrate thatthe cons[ruc[ion Both versions of the NOI are located on the Departmenfs website ac[ivityqualifies for authorization under this permit, (http://www.dec.ny.gov/).The paper version of the NOI shall be signed in accordance with Part VII.H.of this permit and submitted to the following c. the final SWPPP has been prepared,and address: d. a complete NOI has been submitted to the Department in accordance with NOTICE OF INTENT the requirements of this permit. NYS DEC,Bureau of Water Permits 625 Broadway,4�^Floor 3. An owneroropera[orthat has satisfied the requirements of Part II.C.2 above Albany,New York 12233-3505 will be authorized to discharge stormwater from their cons[ruc[ion ac[iviry in accordance with the following schedule: 2. Beginning December 21. 2020 and in accordance with EPA's 2015 NPDES Electronic Reporting Rule(40 CFR Part 127),the owneroropera[ormust submit a. For cons[ruc[ion ac[ivi[ies that are not subject to the requirements of a the NOI electronically using the Departmen['s online NOI. regula[ed,[radi[ional land use con[rol MS4: 3. The owner or opera[or shall have the SWPPP preparer sign the "SWPPP Preparer Certification"statement on the NOI prior to submitting the form to the (i) Five(5)business days from the date the Department receives a Department. complete electronic version of the NOI(eN01)for cons[ruc[ion ac[ivi[ies with a SWPPP that has been prepared in conformance with the design 4. As of the date the NOI is submitted to the Department,the owner or opera[or criteria in the technical standard referenced in Part III.B.1 and the shall make the NOI and SWPPP available for review and copying in accordance pertormance cri[eria in the technical standard referenced in Parts III.B., with the requirements in Part VII.F.of this permit. 2 or 3,for cons[ruc[ion ac[ivi[ies that require post-construction stormwater management practices pursuant to Part III.C.;or C. PermitAuthorization (ii) Sixty(60)business days from the date the Department receives a 1. An owneror opera[or shall not commence conshuc[ion ac[iviry until their complete NOI(electronic or paper version)for cons[ruc[ion ac[ivi[ies authorization to discharge under this permit goes into effect. with a SWPPP that has not been prepared in conformance with the design criteria in technical standard referenced in Part III.B.1.or,for 2. Authorization to discharge under this permit will be effective when the owneror cons[ruc[ion ac[ivi[ies that require post-construction stormwater opera[or has satisfied all of the following criteria: management practices pursuant to Part III.C.,the pertormance cri[eria in the technical standard referenced in Parts III.B.,2 or 3,or; a. project review pursuant to the State Environmental Quality Review Act ("SEQRA")have been satisfied,when SEQRA is applicable.See the (iii) Ten(10)business days from the date the Department receives a Departmenfs website(http://www.dec.nv.aov/)for more information, complete paper version of the NOI for cons[ruc[ion ac[ivi[ies with a SWPPP that has been prepared in conformance with the design b. where required,all necessary Department permits subjectto the Uniform criteria in the technical standard referenced in Part III.B.1 and the Procedures Ac[(`UPA")(see 6 NYCRR Part 621),or the equivalent from pertormance cri[eria in the technical standard referenced in Parts III.B., another New York State agency,have been obtained,unless otherwise 2 or 3,for cons[ruc[ion ac[ivi[ies that require post-construction notified by the Department pursuant to 6 NYCRR 621.3(a)(4).Owners or stormwater management practices pursuant to Part I I I.C. opera[ors of cons[ruc[ion ac[ivi[ies that are required to obtain UPA permits 13 14 (Part II C 3.b) (Part II.D 3) b. For cons[ruc[ion ac[ivi[ies that are subject to the requirements of a use conhol MS4,the regula[ed,hadi[ional land use conhol MS4(provided the regula[ed,[radi[ional land use con[rol MS4: regula[ed,[radi[ional land use con[rol MS4 is not the owneror opera[or of the cons[ruc[ion ac[iviry).At a minimum,the owneror operaror must comply with (i) Five(5)business days from the date the Department receives both a the following requirements in order to be authorized to disturb greater than five complete electronic version of the NOI(eN01)and signed"MS4 (5)acres of soil at any one time: SWPPP Acceptance"form,or a. The owneroropera[orshall have a qualified inspec[orconduct at least two (ii) Ten(10)business days from the date the Department receives both a (2)site inspections in accordance with Part IV.C.of this permit every seven complete paper version of the NOI and signed"MS4 SWPPP (7)calendar days,for as long as greater than five(5)acres of soil remain Acceptance"form. disturbed.The two(2)inspections shall be separated by a minimum of two (2)full calendar days. 4. Coverage under this permit authorizes stormwater discharges from only those areas of disturbance that are identified in the NOI.If an owneroropera[or b. In areas where soil disturbance activity has temporarily or permanently wishes to have stormwater discharges from future or additional areas of ceased,the application of soil stabilization measures must be initiated by disturbance authorized,they must submit a new NOI that addresses that phase the end of the next business day and completed within seven(7)days from of the development,unless otherwise notified by the Department.The owneror the date the current soil disturbance activity ceased.The soil stabilization opera[or shall not commence cons[ruc[ion ac[ivity on the future or additional measures selected shall be in conformance with the technical standard, areas until their authorization to discharge under this permit goes into effect in New York State Standards and Specifications for Erosion and Sediment accordance with Part II.C.of this permit. Control,dated November 2016. D. General Requirements For Owners or Operators With Permit Coverage c. The owneroropera[orshall prepare a phasing plan that defines maximum 1. The owneroropera[orshall ensure thatthe provisions of the SWPPP are disturbed area per phase and shows required cuts and fills. implemented from the commencemen[ofcons[ruc[ion ac[ivity until all areas of d. The owneroropera[orshall install any additional site-specific practices disturbance have achieved final s[abiliza[ion and the Notice of Termination needed to protectwater quality. ("NOT")has been submitted to the Department in accordance with Part V.of this permit.This includes any changes made to the SWPPP pursuantto Part e. The owneroropera[orshall include the requirements above in their III.A.4.of this permit. SWPPP 2. The owneror opera[or shall maintain a copy of the General Permit(GP-0-20- 4. In accordance with statute,regulations,and the terms and conditions of this 001),NOI,NOI Acknowledgmen[Le[[er,SWPPP,MS4 SWPPP Acceptance permit,the Department may suspend or revoke an owner's oropera[or's form,inspection reports,responsible contractors or subcontractors certification coverage under this permit at any time if the Department determines thatthe statement(see Part III.A.6.),and all documentation necessary to demonstrate SWPPP does not meetthe permit requirements or consistentwith Part VII.K.. eligibility with this permit at the cons[ruc[ion si[e until all disturbed areas have achieved final s[abiliza[ion and the NOT has been submitted to the Department. 5. Upon a finding of significant non-compliance with the practices described in the The documents must be maintained in a secure location,such as a job trailer, SWPPP or violation of this permit,the Department may order an immediate on-site construction office,or mailbox with lock.The secure location must be stop to all activity at the site until the non-compliance is remedied.The stop accessible during normal business hours to an individual performing a work order shall be in writing,describe the non-compliance in detail,and be compliance inspection. sent to the owner or opera[or. 3. The owneror opera[or of a cons[ruc[ion ac[iviry shall not disturb greater than 6. For cons[ruc[ion ac[ivi[ies that are subject to the requirements of a regula[ed, five(5)acres of soil at any one time without prior written authorization from the [radi[ional land use con[rol MS4,the owneroropera[or shall notify the Departmentor,in areas underthejurisdiction of a regula[ed,[radi[ionalland 15 16 (Part I I.D.6) (Part II F 3) regula[ed,[radi[ional land use con[rol MS4 in writing of any planned opera[orwas not subject to a sixty(60)business day authorization period that amendments or modifications to the post-construction stormwater management has not expired as of the date the Department receives the NOI from the new practice component of the SWPPP required by Part III.A.4.and 5.of this owner or opera[or. permit.Unless otherwise notified by the regula[ed,hadi[ional land use conhol MS4,the owneroropera[orshall have the SWPPP amendments or modifications reviewed and accepted by the regula[ed,[radi[ional land use Part III.STORMWATER POLLUTION PREVENTION PLAN(SWPPP) con[rol MS4 prior to commencing construction of the post-construction stormwater management practice. A. General SWPPP Requirements E. Permit Coverage for Discharges Authorized Under GP-0-15-002 1. A SWPPP shall be prepared and implemented by the owneroropera[orof each cons[ruc[ion ac[ivity covered by this permit.The SWPPP must document 1. Upon renewal of SPDES General Permitfor Stormwater Discharges from the selection,design,installation,implementation and maintenance of the Cons[ruc[ion Ac[ivity(Permit No.GP-0-15-002),an owneroropera[orof a control measures and practices that will be used to meet the effluent limitations cons[ruc[ion ac[ivitywith coverage under GP-0-15-002,as of the effective date in Part I.B.of this permit and where applicable,the post-construction of GP-0-20-001,shall be authorized to discharge in accordance with GP-0-20- stormwater management practice requirements in Part I.C.of this permit.The 001,unless otherwise notified by the Department. SWPPP shall be prepared priorto the submittal of the NOI.The NOI shall be submitted to the Department prior to the commencemen[of cons[ruc[ion An owneroropera[or may continue to implement the technical/design ac[ivity.A copy of the completed,final NOI shall be included in the SWPPP. components of the post-construction stormwater management controls provided that such design was done in conformance with the technical 2. The SWPPP shall describe the erosion and sediment control practices and standards in place atthe time of initial project authorization.However,they where required,post-construction stormwater management practices thatwill must comply with the other,non-design provisions of GP-0-20-001. be used and/or constructed to reduce the pollu[an[s in stormwater discharges F. Change of Owner or Operator and to assure compliance with the terms and conditions of this permit.In addition,the SWPPP shall identify potential sources of pollution which may 1. When property ownership changes or when there is a change in operational reasonably be expected to affect the quality of stormwater discharges. control overthe construction plans and specifications,the original owneror opera[or must notify the new owneror opera[or,in writinq,of the requirement to 3. All SWPPPs that require the post-construction stormwater management obtain permit coverage by submitting a NOI with the Department.For practice component shall be prepared by a qualified professional that is cons[ruc[ion ac[ivi[ies subject to the requirements of a regula[ed,[radi[ional knowledgeable in the principles and practices of stormwater management and land use con[rol MS4,the original owneror opera[or must also notify the MS4, treatment. in writing,of the change in ownership at least 30 calendar days prior to the change in ownership. 4. The owneror opera[or must keep the SWPPP current so that it at all times accurately documents the erosion and sediment controls practices that are 2. Once the new owneroropera[orobtains permit coverage,the original owneror being used orwill be used during construction,and all post-construction opera[or shall then submit a completed NOT with the name and permit stormwater management practices that will be constructed on the site. At a identification number of the new owneroropera[orto the Department atthe minimum,the owneroropera[orshall amend the SWPPP,including address in Part II.B.1.of this permit.If the original owneroropera[or maintains construction drawings: ownership of a portion of the cons[ruc[ion ac[iviry and will disturb soil,they must maintain their coverage under the permit. a. whenever the current provisions prove to be ineffective in minimizing pollu[an[s in stormwater discharges from the site; 3. Permit coverage for the new owneror opera[orwill be effective as of the date the Department receives a complete NOI,provided the original owneror 17 18 (Parc m.n a.e) (Parc u i.n.$) b. whenever there is a change in design,construction,or operation at the the terms and conditions of the most current version of the New York State cons[ruc[ion si[e that has or could have an effect on the discharge of Pollutant Discharge Elimination System("SPDES")general permit for pollu[an[s; stormwater discharges from cons[ruc[ion ac[ivi[ies and that it is unlawful for any person to cause or contribute to a violation of wa[erqualitys[andards. c. to address issues or deficiencies identified during an inspection by the Furthermore,I am aware thatthere are significant penalties for submitting qualified inspec[or,the Department or other regulatory authority;and false information,that I do not believe to be true,including the possibility of fine and imprisonment for knowing violations" d. to documentthe final construction conditions. In addition to providing the certification statement above,the certification page 5. The Department may notify the owneror opera[or at any time that the SWPPP must also identify the specific elements of the SWPPP that each contractor and does not meet one or more of the minimum requirements of this permit.The subcontractor will be responsible for and include the name and title of the notification shall be in writing and identify the provisions of the SWPPP that person providing the signature;the name and title of the[rained con[rac[or require modification.Within fourteen(14)calendar days of such notification,or responsible for SWPPP implementation;the name,address and telephone as otherwise indicated by the Department,the owner or opera[or shall make number of the contracting firm;the address(or other identifying description)of the required changes to the SWPPP and submitwritten notification to the the site;and the date the certification statement is signed.The owneror Department that the changes have been made.If the owneror opera[or does opera[or shall attach the certification statement(s)to the copy of the SWPPP not respond to the Departmenfs comments in the specified time frame,the that is maintained at the cons[ruc[ion si[e.If new or additional contractors are Department may suspend the owner's or opera[or's coverage under this permit hired to implement measures identified in the SWPPP after construction has or require the owneroropera[orto obtain coverage under an individual SPDES commenced,they must also sign the certification statement and provide the permit in accordance with Part II.D.4.of this permit. information listed above. 6. Prior to the commencemen[of conshuc[ion ac[iviry,the owneror opera[or must 7. For projects where the Department requests a copy of the SWPPP or identify the contractor(s)and subcontractor(s)that will be responsible for inspection reports,the owner or opera[orshall submit the documents in both installing,constructing,repairing,replacing,inspecting and maintaining the electronic(PDF only)and paper formatwithin five(5)business days,unless erosion and sediment control practices included in the SWPPP;and the otherwise notified by the Department. contractor(s)and subcontractor(s)that will be responsible for constructing the post-construction stormwater management practices included in the SWPPP. The owneroropera[orshall have each of the contractors and subcontractors B. Required SWPPP Contents identify at least one person from their company that will be responsible for 1. Erosion and sediment control component-All SWPPPs prepared pursuantto implementation of the SWPPP.This person shall be known as the[rained this permit shall include erosion and sediment control practices designed in con[rac[or.The owneror opera[orshall ensure that at least one[rained conformance with the technical standard,New York State Standards and con[rac[or is on site on a daily basis when soil disturbance activities are being Specifications for Erosion and Sediment Control,dated November 2016.Where pertormed. erosion and sediment control practices are not designed in conformance with The owneroropera[orshall have each of the contractors and subcontractors the design criteria included in the technical standard,the owneroropera[or must demonstrate equivalence to the technical standard.At a minimum,the identified above sign a copy of the following certification statement below erosion and sediment control component of the SWPPP shall include the before they commence any cons[ruc[ion ac[ivity: following: "I hereby certify under penalty of law that I understand and agree to comply a. Background information aboutthe scope of the project,including the with the terms and conditions of the SWPPP and agree to implement any location,type and size of project corrective actions identified by the qualified inspec[or during a site inspection. I also understand that the owneroropera[or must comply with 19 20 (Parc w e�.e) (Parc w e.tp b. A site map/construction drawing(s)for the project,including a general schedule shall be in accordance with the requirements in the technical location map.At a minimum,the site map shall show the total site area;all standard,New York State Standards and Specifications for Erosion and improvements;areas of disturbance;areas that will not be disturbed; Sediment Control,dated November 2016; existing vegetation;on-site and adjacent off-site surtace water(s); floodplain/floodway boundaries;wetlands and drainage patterns that could j. A description of the pollution prevention measures thatwill be used to be affected by the conshuc[ion ac[iviry;existing and final contours; control litter,construction chemicals and construction debris from becoming locations of different soil types with boundaries;material,waste,borrow or a pollu[an[source in the stormwater discharges; equipment storage areas located on adjacent properties;and location(s)of the stormwater discharge(s); k. A description and location of any stormwater discharges associated with industrial activity other than construction at the site,including,but not limited c. A description of the soil(s)present at the site,including an identification of to,stormwater discharges from asphalt plants and concrete plants located the Hydrologic Soil Group(HSG); on the cons[ruc[ion si[e;and d. A construction phasing plan and sequence of operations describing the I. Identification of any elements of the design that are not in conformance with intended order of conshuc[ion ac[ivi[ies,including clearing and grubbing, the design criteria in the technical standard,New York State Standards and excavation and grading,utility and infrastructure installation and any other Specifications for Erosion and Sediment Control,dated November 2016. activity at the site that results in soil disturbance; Include the reason for the deviation or alternative design and provide information which demonstrates thatthe deviation or alternative design is e. A description of the minimum erosion and sediment control practices to be equivalen[to the technical standard. installed or implemented for each cons[ruc[ion ac[ivity that will result in soil disturbance.Include a schedule that identifies the timing of initial placement 2. Post-construction stormwater management practice component—The owneror or implementation of each erosion and sediment control practice and the opera[or of any construction project identified in Table 2 of Appendix B as minimum time frames that each practice should remain in place or be needing post-construction stormwater management practices shall prepare a implemented; SWPPP that includes practices designed in conformance with the applicable sizing cri[eria in Part LC2.a.,c.or d.of this permit and the pertormance cri[eria f. A temporary and permanent soil stabilization plan that meets the in the technical standard,New York State Stormwater Management Design requirements of this general permit and the technical standard,New York Manual dated January 2015 State Standards and Specifications for Erosion and Sediment Control,dated November 2016,for each stage of the project,including initial land clearing Where post-construction stormwater management practices are not designed and grubbing to project completion and achievement of final s[abiliza[ion; in conformance with the pertormance cri[eria in the technical standard,the owner or opera[or must include in the SWPPP the reason(s)for the deviation or g. A site map/construction drawing(s)showing the specific location(s),size(s), alternative design and provide information which demonstrates that the and length(s)of each erosion and sediment control practice; deviation or alternative design is equivalen[to the technical standard. h. The dimensions,material specifications,installation details,and operation The post-construction stormwater management practice component of the and maintenance requirements for all erosion and sediment control SWPPP shall include the following: practices.Include the location and sizing of any temporary sediment basins and structural practices that will be used to divert flows from exposed soils; a. Identification of all post-construction stormwater management practices to be constructed as part of the project.Include the dimensions,material i. A maintenance inspection schedule forthe contractor(s)identified in Part specifications and installation details for each post-construction stormwater III.A.6.of this permit,to ensure continuous and effective operation of the management practice; erosion and sediment control practices.The maintenance inspection 21 22 (Part I II B 2.b) (Part II I.B 3) b. A site map/construction drawing(s)showing the specific location and size of 3. Enhanced Phosphorus Removal Standards-All construction projects identified each post-construction stormwater management practice; in Table 2 of Appendix B that are located in the watersheds identified in Appendix C shall prepare a SWPPP that includes post-construction stormwater c. A Stormwater Modeling and Analysis Report that includes: management practices designed in conformance with the applicable sizing (i) Map(s)showing pre-development conditions,including cri[eria in Part LC2.b.,c.or d.of this permit and the pertormance cri[eria, watershed/subcatchments boundaries,flow paths/routing,and design Enhanced Phosphorus Removal Standards included in the Design Manual.At a points; minimum,the post-construction stormwater management practice component of the SWPPP shall include items 2.a-2.f.above. (ii) Map(s)showing post-development conditions,including C. Required SWPPP Components by Project Type watershed/subcatchments boundaries,flow paths/routing,design points and post-construction stormwater management practices; Unless otherwise notified by the Department, owners or opera[ors of cons[ruc[ion ui Results of stormwater modelin i e.h drolo and h draulic anal sis ac[ivi[ies identified in Table 1 of Appendix B are required to prepare a SWPPP that only � � g�� Y gY Y Y � includes erosion and sediment control practices designed in conformance with Part for the required storm events.I nclude supporting calculations(model I II.B.1 of this perm it.Owners oropera[ors of the cons[ruc[ion ac[ivi[ies identified in Table runs),methodology,and a summary table that compares pre and post- 2 of Appendix B shall prepare a SWPPP thatalso includes post-construction stormwater development runoff rates and volumes for the different storm events; management practices designed in conformance with Part III.B2 or 3 of this permit. (iv) Summary table,with supporting calculations,which demonstrates that each post-construction stormwater management practice has been Part IV.INSPECTION AND MAINTENANCE REQUIREMENTS designed in conformance with the sizing cri[eria included in the Design Manual; A. General Construction Site Inspection and Maintenance Requirements (v) Identification of any sizing cri[eria that is not required based on the 1. The owneror opera[or must ensure that all erosion and sediment control requirements included in Part I.C.of this permit;and practices(including pollution prevention measures)and all post-construction (vi) Identification of any elements of the design that are not in conformance stormwater management practices identified in the SWPPP are inspected and with the pertormance cri[eria in the Design Manual. Include the maintained in accordance with Part IV.B.and C.of this permit. reason(s)for the deviation or alternative design and provide 2. The terms of this permit shall not be construed to prohibit the State of New information which demonstrates that the deviation or alternative design York from exercising any authority pursuant to the ECL,common law or federal is equivalen[to the Design Manual; law,or prohibit New York State from taking any measures,whether civil or d. Soil testing results and locations(test pits,borings); criminal,to prevent violations of the laws of the State of New York or protect the public health and safety and/or the environment. e. Infiltration test results,when required;and B. Contractor Maintenance Inspection Requirements f. An operations and maintenance plan that includes inspection and maintenance schedules and actions to ensure continuous and effective 1. The owneroropera[orof each cons[ruc[ion ac[ivity identified in Tables 1 and 2 operation of each post-construction stormwater management practice.The of Appendix B shall have a[rained con[rac[or inspect the erosion and sediment plan shall identify the entity thatwill be responsible for the long term control practices and pollution prevention measures being implemented within operation and maintenance of each practice. the active work area daily to ensure that they are being maintained in effective operating condition at all times.If deficiencies are identified,the contractor shall 23 24 (Parc iv e.�) (Parc iv c�a) begin implementing corrective actions within one business day and shall in one of the watersheds listed in Appendix C and not directly discharging to complete the corrective actions in a reasonable time frame. one of the 303(d)segments listed in Appendix E; 2. For construction sites where soil disturbance activities have been temporarily b. the construction of a single family home that involves a soil disturbance of suspended(e.g.winter shutdown)and[emporary s[abiliza[ion measures have one(1)or more acres of land but less than five(5)acres and is not located been applied to all disturbed areas,the[rained con[rac[orcan stop conducting in one of the watersheds listed in Appendix C and not directly discharging to the maintenance inspections.The hained con[rac[orshall begin conducting the one of the 303(d)segments listed in Appendix E; maintenance inspections in accordance with Part IV.B.1.of this permit as soon as soil disturbance activities resume. c. construction on agricultural property that involves a soil disturbance of one (1)or more acres of land but less than five(5)acres;and 3. For construction sites where soil disturbance activities have been shut down with partial project completion,the[rained con[rac[orcan stop conducting the d. cons[ruc[ion ac[ivi[ies located in the watersheds identified in Appendix D maintenance inspections if all areas disturbed as of the project shutdown date that involve soil disturbances between five thousand(5,000)square feet have achieved final s[abiliza[ion and all post-construction stormwater and one(1)acre of land. management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. 2. Unless otherwise notified by the Department,the qualified inspec[orshall C. Qualified Inspector Inspection Requirements conduct site inspections in accordance with the following timetable: The owner or opera[or shall have a qualified inspec[or conduct site inspections in a. For construction sites where soil disturbance activities are on-going,the conformance with the following requirements: qualified inspec[orshall conduct a site inspection at least once every seven (7)calendar days. [Note:The[rained con[rac[or identified in Part III.A.6.and IV.B.of this permit cannot conduct the qualified inspec[orsite inspections unless they meet the qualified inspec[or b. For construction sites where soil disturbance activities are on-going and the qualifications included in Appendix A.In orderto perform these inspections,the[rained owneroropera[orhas received authorization in accordance with Part II.D.3 con[rac[orwould have to be a: to disturb greater than five(5)acres of soil at any one time,the qualified inspec[orshall conduct at leasttwo(2)site inspections every seven(7) • licensed Professional Engineer, calendar days.The two(2)inspections shall be separated by a minimum of • Certified Professional in Erosion and Sediment Control(CPESC), two(2)full calendar days. • New York State Erosion and Sediment Control Certificate Program holder • Registered Landscape Architect,or c. For construction sites where soil disturbance activities have been • someone working under the direct supervision of,and atthe same company as, temporarily suspended(e.g.winter shutdown)and[emporary s[abiliza[ion the licensed Professional Engineer or Registered Landscape Architect,provided measures have been applied to all disturbed areas,the qualified inspec[or they have received four(4)hours of Department endorsed training in proper shall conduct a site inspection at least once every thirty(30)calendar days. erosion and sediment control principles from a Soil and Water Conservation The owneroropera[orshall notify the DOW Water(SPDES)Program District,or other Department endorsed entity]. contact at the Regional Office(see contact information in Appendix F)or,in areas under the jurisdiction of a regula[ed,hadi[ional land use con[rol MS4, 1. A qualified inspec[or shall conduct site inspections for all cons[ruc[ion ac[ivi[ies the regula[ed,hadi[ional land use conhol MS4(provided the regula[ed, identified in Tables 1 and 2 of Appendix B,with the exception of: [radi[ional land use con[rol MS4 is not the owneror opera[or of the cons[ruc[ion ac[iviry)in writing prior to reducing the frequency of a. the construction of a single family residential subdivision with 25%or less inspections. impervious coverat total site build-out that involves a soil disturbance of one(1)or more acres of land but less than five(5)acres and is not located 25 26 (Parc iv cz.d) (Parc iv ca a) d. For construction sites where soil disturbance activities have been shut down a. Date and time of inspection; with partial project completion,the qualified inspec[orcan stop conducting inspections if all areas disturbed as of the project shutdown date have b. Name and title of person(s)pertorming inspection; achieved final s[abiliza[ion and all post-construction stormwater management practices required for the completed portion of the project c. A description of the weather and soil conditions(e.g.dry,wet,saturated)at have been constructed in conformance with the SWPPP and are the time of the inspection; operational.The owneroropera[orshall notify the DOW Water(SPDES) Program contact at the Regional Office(see contact information in Appendix d. A description of the condition of the runoff at all points of discharge from the F)or,in areas under the jurisdiction of a regula[ed,[radi[ional land use cons[ruc[ion si[e.This shall include identification of any discharges of con[rol MS4,the regula[ed,[radi[ionalland use conhol MS4(provided the sedimentfrom the conshuc[ion si[e.Include dischargesfrom conveyance regula[ed,[radi[ionalland use con[rol MS4 is notthe owneroropera[or of systems(i.e.pipes,culverts,ditches,etc.)and overland flow; the cons[ruc[ion ac[iviry)in writing prior to the shutdown.If soil disturbance activities are not resumed within 2 years from the date of shutdown,the e. A description of the condition of all natural surtace waterbodies located owneroropera[orshall have the qualified inspec[orpertorm a final within,or immediately adjacentto,the property boundaries of the inspection and certify that all disturbed areas have achieved final cons[ruc[ion si[e which receive runoff from disturbed areas.This shall s[abiliza[ion,and all temporary,structural erosion and sediment control include identification of any discharges of sedimentto the surtace measures have been removed;and that all post-construction stormwater waterbody; management practices have been constructed in conformance with the SWPPP by signing the"Final S[abiliza[ion"and"Post-Construction f. Identification of all erosion and sediment control practices and pollution Stormwater Management Practice"certification statements on the NOT.The prevention measures that need repair or maintenance; owneroropera[orshall then submitthe completed NOT form to the address in Part II.B.1 of this permit. g. Identification of all erosion and sediment control practices and pollution prevention measures thatwere not installed properly or are notfunctioning e. For construction sites that directly discharge to one of the 303(d)segments as designed and need to be reinstalled or replaced; listed in Appendix E or is located in one of the watersheds listed in Appendix C,the qualified inspec[or shall conduct at least two(2)site h. Description and sketch of areas with active soil disturbance activity,areas inspections every seven(7)calendar days.The two(2)inspections shall be that have been disturbed but are inactive at the time of the inspection,and separated by a minimum of two(2)full calendar days. areas that have been stabilized(temporary and/or final)since the last inspection; 3. At a minimum,the qualified inspec[orshall inspect all erosion and sediment control practices and pollution prevention measures to ensure integrity and i. Current phase of construction of all post-construction stormwater effectiveness,all post-construction stormwater management practices under management practices and identification of all construction that is not in construction to ensure that they are constructed in conformance with the conformance with the SWPPP and technical standards; SWPPP,all areas of disturbance that have not achieved final s[abiliza[ion,all points of discharge to natural surface waterbodies located within,or j. Corrective action(s)that must be taken to install,repair,replace or maintain immediately adjacent to,the property boundaries of the cons[ruc[ion si[e,and erosion and sediment control practices and pollution prevention measures; all points of discharge from the cons[ruc[ion si[e. and to correct deficiencies identified with the construction of the post- construction stormwater management practice(s); 4. The qualified inspec[or shall prepare an inspection report subsequent to each and every inspection.At a minimum,the inspection report shall include and/or k. Identification and status of all corrective actions thatwere required by address the following: previous inspection;and 27 28 (Parc iv.ca i) (Parc v.n z.e) I. Digital photographs,with date stamp,that clearly show the condition of all b. Planned shutdown with partial project completion-All soil disturbance practices that have been identified as needing corrective actions.The activities have ceased;and all areas disturbed as of the project shutdown qualified inspec[orshall attach paper color copies of the digital photographs date have achieved final s[abiliza[ion;and all temporary,structural erosion to the inspection report being maintained onsite within seven(7)calendar and sediment control measures have been removed;and all post- days of the date of the inspection.The qualified inspec[or shall also take construction stormwater management practices required for the completed digital photographs,with date stamp,that clearly show the condition of the portion of the project have been constructed in conformance with the practice(s)afterthe corrective action has been completed.The qualified SWPPP and are operational; inspec[orshall attach paper color copies of the digital photographs to the inspection report that documents the completion of the corrective action c. A new owneroropera[or has obtained coverage under this permit in work within seven(7)calendar days of that inspection. accordance with Part II.F.of this permit. 5. Within one business day of the completion of an inspection,the qualified d. The owneror opera[or obtains coverage under an alternative SPDES inspec[orshall notify the owneroropera[or and appropriate contractor or general permit or an individual SPDES permit. subcontractor identified in Part III.A.6.of this permit of any corrective actions that need to be taken.The contractor or subcontractor shall begin implementing 3. For cons[ruc[ion ac[ivi[ies meeting subdivision 2a.or 2b.of this Part,the owner the corrective actions within one business day of this notification and shall or opera[or shall have the qualified inspec[or pertorm a final site inspection complete the corrective actions in a reasonable time frame. priorto submitting the NOT.The qualified inspec[orshall,by signing the"Final S[abiliza[ion"and"Post-Construction Stormwater Management Practice 6. All inspection reports shall be signed by the qualified inspec[or.Pursuantto certification statements on the NOT,certify that all the requirements in Part Part II.D.2.of this permit,the inspection reports shall be maintained on site with V.A.2.a.or b.of this permit have been achieved. the SWPPP. 4. For cons[ruc[ion ac[ivi[ies that are subject to the requirements of a regula[ed, [radi[ional land use con[rol MS4 and meet subdivision 2a.or 2b.of this Part,the Part V.TERMINATION OF PERMIT COVERAGE owneroropera[orshall have the regula[ed,[radi[ionalland use con[rol MS4 sign the"MS4 Acceptance"statement on the NOT in accordance with the A. Termination of Permit Coverage requirements in Part VII.H.of this permit.The regula[ed,[radi[ionalland use con[rol MS4 official,by signing this statement,has determined that it is 1. An owneroropera[orthat is eligible to terminate coverage under this permit acceptable for the owneroropera[orto submitthe NOT in accordance with the must submit a completed NOT form to the address in Part II.B.1 of this permit. requirements of this Part.The regula[ed,[radi[ional land use con[rol MS4 can The NOT form shall be one which is associated with this permit,signed in make this determination by pertorming a final site inspection themselves or by accordance with Part VII.H of this permit. accepting the qualified inspec[ors final site inspection certification(s)required in Part V.A.3.of this permit. 2. An owneror opera[or may terminate coverage when one or more the following conditions have been met: 5. For cons[ruc[ion ac[ivi[ies that require post-construction stormwater management practices and meet subdivision 2a.of this Part,the owneror a. Total project completion-All cons[ruc[ion ac[iviry identified in the SWPPP opera[or must,prior to submitting the NOT,ensure one of the following: has been completed;and all areas of disturbance have achieved final s[abiliza[ion;and all temporary,structural erosion and sediment control a. the post-construction stormwater management practice(s)and any right-of- measures have been removed;and all post-construction stormwater way(s)needed to maintain such practice(s)have been deeded to the management practices have been constructed in conformance with the municipality in which the practice(s)is located, SWPPP and are operational; 29 30 (Parc v ns.e) (Parc w i.n) b. an executed maintenance agreement is in place with the municipality that Act(CWA)and the ECL and is grounds for an enforcement action against the owneror will maintain the post-construction stormwater management practice(s), opera[or and/or the contractor/subcontractor; permit revocation, suspension or modification;ordenial of a permit renewal application.Upon a finding of significant non- c. for post-construction stormwater management practices that are privately compliance with this permit or the applicable SWPPP,the Department may order an owned,the owneroropera[or has a mechanism in place that requires immediate stop to all cons[ruc[ion ac[ivity at the site until the non-compliance is operation and maintenance of the practice(s)in accordance with the remedied.The stop work order shall be in writing,shall describe the non-compliance in operation and maintenance plan,such as a deed covenant in the owneror detail,and shall be sentto the owneroropera[or. opera[or's deed of record, d. for post-construction stormwater management practices that are owned by If any human remains or archaeological remains are encountered during excavation, a public or private institution(e.g.school,university,hospital),government the owner or opera[or must immediately cease,or cause to cease,all cons[ruc[ion agency or authority,or public utility;the owneroropera[or has policy and ac[ivity in the area of the remains and notify the appropriate Regional Water Engineer procedures in place that ensures operation and maintenance of the (RWE). Cons[ruc[ion ac[ivity shall not resume until written permission to do so has been practices in accordance with the operation and maintenance plan. received from the RWE. Part VI.REPORTING AND RETENTION RECORDS B. Continuation of the Expired General Permit A. Record Retention This permit expires five(5)years from the effective date.If a new general permit is not issued priorto the expiration of this general permit,an owneroropera[orwith coverage The owneroropera[orshall retain a copy of the NOI,NOI under this permit may continue to operate and discharge in accordance with the terms Acknowledgment Letter,SWPPP,MS4 SWPPP Acceptance form and any inspection and conditions of this general permit, if it is eutended pursuant to the State reports thatwere prepared in conjunction with this permitfor a period of at leastfive(5) Administrative Procedure Act and 6 NYCRR Part 621,until a new general permit is issued. years from the date that the Department receives a complete NOT submitted in accordance with Part V.of this general permit. C. Enforcement B. Addresses Failure of the owneroropera[or,its contractors,subcontractors,agents and/or assigns to strictly adhere to any of the permit requirements contained herein shall constitute a With the exception of the NOI,NOT,and MS4 SWPPP Acceptance form(which must violation of this permit.There are substantial criminal,civil,and administrative penalties be submitted to the address referenced in Part II.B.1 of this permit), all written associated with violating the provisions of this permit. Fines of up to$37,500 per day correspondence requested by the Department,including individual permit applications, for each violation and imprisonment for up to fifteen(15)years may be assessed shall be sent to the address of the appropriate DOW Water(SPDES)Program contact depending upon the nature and degree of the offense. at the Regional Office listed in Appendix F. D. Need to Halt or Reduce Activity Not a Defense Part VII.STANDARD PERMIT CONDITIONS It shall not be a defense for an owneroropera[or in an enforcement action that it would A. Dutyto Comply have been necessary to halt or reduce the cons[ruc[ion ac[ivity in order to maintain compliance with the conditions of this permit. The owner or opera[or must comply with all conditions of this permit. All contractors and subcontractors associated with the project must comply with the terms of the SWPPP.Any non-compliance with this permit constitutes a violation of the Clean Water 31 32 (Parc vi i.e) (Parc wi H�a) E. Dutyto Mitigate (i) a president,secretary,treasurer,orvice-presidentofthe corporation in charge of a principal business function,or any other person who The owneroropera[orand its contractors and subcontractors shall take all reasonable performs similar policy or decision-making functions for the steps to minimize or prevent any discharge in violation of this permit which has a corporation;or reasonable likelihood of adversely affecting human health orthe environment. (ii) the manager of one or more manufacturing,production or operating F. Dutyto Provide Information facilities,provided the manager is authorized to make management decisions which govern the operation of the regulated facility including The owner or opera[or shall furnish to the Department,within a reasonable specified having the explicit or implicit duty of making major capital investment time period of a written request,all documentation necessary to demonstrate eligibility recommendations,and initiating and directing other comprehensive and any information to determine compliance with this permit or to determine whether measures to assure long term environmental compliance with cause exists for modifying or revoking this permit,or suspending or denying coverage environmental laws and regulations;the manager can ensure that the under this permit,in accordance with the terms and conditions of this permit.The NOI, necessary systems are established or actions taken to gather complete SWPPP and inspection reports required by this permit are public documents that the and accurate information for permit application requirements;and owneroropera[ormust make available for review and copying by any person within five where authority to sign documents has been assigned or delegated to (5)business days of the owner or opera[or receiving a written request by any such the manager in accordance with corporate procedures; person to review these documents. Copying of documents will be done at the requester s expense. b. For a partnership or sole proprietorship these forms shall be signed by a general partner orthe proprietor,respectively;or G.Other Information c. For a municipality,State,Federal,or other public agency these forms shall When the owner or opera[or becomes aware that they failed to submit any relevant be signed by either a principal executive officer or ranking elected official. facts,or submitted incorrect information in the NOI or in any of the documents required For purposes of this section,a principal executive officer of a Federal by this permit,or have made substantive revisions to the SWPPP(e.g.the scope of the agency includes: project changes significantly,the type of post-construction stormwater management practice(s) changes, there is a reduction in the sizing of the post-construction (i) the chief executive officer of the agency,or stormwater management practice,or there is an increase in the disturbance area or impervious area), which were not reflected in the original NOI submitted to the (ii) a senior executive officer having responsibility for the overall Department,they shall promptly submit such facts or information to the Department operations of a principal geographic unit of the agency(e.g.,Regional using the contact information in Part II.A.of this permit.Failure of the owneroropera[or Administrators of EPA). to correct or supplement any relevant facts within five(5)business days of becoming aware of the deficiency shall constitute a violation of this permit. 2. The SWPPP and other information requested by the Department shall be signed by a person described in Part VII.H.1.of this permit or by a duly H. Signatory Requirements authorized representative of that person.A person is a duly authorized representative only if: 1. All NOIs and NOTs shall be signed as follows: a. The authorization is made in writing by a person described in Part VII.H.1. a. For a corporation these forms shall be signed by a responsible corporate of this permit; officer.For the purpose of this section,a responsible corporate officer means: b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity, such as the position of plant manager,operator of a well or a well field, 33 34 (Part VII H 2.b) (Part VII K 1) superintendent,position of equivalen[responsibility,or an individual or include a brief statement of the reasons forthis decision,an application form, position having overall responsibility for environmental matters forthe a statement setting a time frame forthe owner or operator to file the company.(A duly authorized representative may thus be either a named application for an individual SPDES permit,and a deadline,not soonerthan individual or any individual occupying a named position)and, 180 days from owner or operator receipt of the notification letter,whereby the authorization to discharge under this general permit shall be terminated. c. The written authorization shall include the name,title and signature of the Applications must be submitted to the appropriate Permit Administrator at the authorized representative and be attached to the SWPPP. Regional Office.The Department may grant additional time upon demonstration,to the satisfaction of the Department,that additional time to 3. All inspection reports shall be signed by the qualified inspec[orthat pertorms apply for an alternative authorization is necessary or where the Department the inspection. has not provided a permit determination in accordance with Part 621 of this Title. 4. The MS4 SWPPP Acceptance form shall be signed by the principal executive officer or ranking elected official from the regula[ed,hadi[ional land use con[rol 2.When an individual SPDES permit is issued to a discharger authorized to MS4,or by a duly authorized representative of that person. discharge under a general SPDES permit for the same discharge(s),the general permit authorization for outfalls authorized under the individual It shall constitute a permitviolation if an incorrect and/or improper signatory SPDES permit is automatically terminated on the effective date of the authorizes any required forms,SWPPP and/or inspection reports. individual permit unless termination is earlier in accordance with 6 NYCRR Part 750. I. Property Rights L. Proper Operation and Maintenance The issuance of this permit does not convey any property rights of any sort,nor any exclusive privileges,nor does itauthorize any injuryto private property norany invasion The owneroropera[orshall at all times properly operate and maintain all facilities and of personal rights,nor any infringement of Federal,State or local laws or regulations. systems of treatment and control(and related appurtenances)which are installed or Owners or opera[ors must obtain any applicable conveyances,easements, licenses used bythe owneroropera[orto achieve compliance with the conditions of this permit and/or access to real property prior to commencing cons[ruc[ion ac[ivity. and with the requirements of the SWPPP. J. Severability M.Inspection and Entry The provisions of this permit are severable,and if any provision of this permit,or the The owner or opera[or shall allow an authorized representative of the Department, application of any provision of this permit to any circumstance, is held invalid,the EPA,applicable county health department,or,in the case of a cons[ruc[ion si[e which application of such provision to other circumstances,and the remainder of this permit discharges through an MS4,an authorized representative of the MS4 receiving the shall not be affected thereby. discharge, upon the presentation of credentials and other documents as may be required by law,to: K. Requirement to Obtain Coverage Under an Alternative Permit 1.Enter upon the owners or operator's premises where a regulated facility or activity is located or conducted or where records must be kept under the 1. The Department may require any owner or operator authorized by this permitto conditions of this permit; apply for and/or obtain either an individual SPDES permit or another SPDES general permit.When the Department requires any discharger authorized by a 2.Have access to and copy at reasonable times,any records that must be kept general permitto apply for an individual SPDES permit,it shall notify the under the conditions of this permit;and discharger in writing that a permit application is required.This notice shall 35 36 (Part VI I.M 3) (Part VI I.R) 3.Inspect at reasonable times any facilities or equipment(including monitoring R. Other Permits and control equipment),practices or operations regulated or required by this permit. Nothing in this permit relieves the owneroropera[orfrom a requirement to obtain any other permits required by law. 4.Sample or monitor at reasonable times,for purposes of assuring permit compliance or as otherwise authorized by the Act or ECL,any substances or parameters at any location. N. PermitActions This permit may,at any time,be modified,suspended,revoked,or renewed by the Department in accordance with 6 NYCRR Part 621.The filing of a request by the owneroropera[orfor a permit modification,revocation and reissuance,termination,a notification of planned changes or anticipated noncompliance does not limit,diminish and/or stay compliance with any terms of this permit. O. Definitions Definitions of key terms are included in Appendix A of this permit. P. Re-Opener Clause 1.If there is evidence indicating potential or realized impacts on water quality due to any stormwater discharge associated with construction activity covered by this permit,the owner or operator of such discharge may be required to obtain an individual permit or alternative general permit in accordance with Part VII.K.of this permit or the permit may be modified to include different limitations and/or requirements. 2.Any Department initiated permit modification,suspension or revocation will be conducted in accordance with 6 NYCRR Part 621,6 NYCRR 750-1.18,and 6 NYCRR 750-120. Q. Penalties for Falsification of Forms and Reports In accordance with 6NYCRR Part 750-2.4 and 750-2.5,any person who knowingly makes any false material statement,representation,or certification in any application, record,report or other document filed or required to be maintained under this permit, including reports of compliance or noncompliance shall,upon conviction,be punished in accordance with ECL§71-1933 and or Articles 175 and 210 of the New York State PenalLaw. 37 38 nvva�d�;:n APPENDIXA—Acronyms and Definitions Definitions All definitions in this section are solelv for the purposes of this permit. Acronyms Agricultural Building—a structure designed and constructed to house farm APO—Agency Preservation Officer implements,hay,grain,poultry,livestock or other horticultural products;excluding any BMP—Best Management Practice structure designed,constructed or used,in whole or in part,for human habitation,as a CPESC—Certified Professional in Erosion and Sediment Control place of employment where agricultural products are processed,treated or packaged, Cpv—Channel Protection Volume or as a place used by the public. CWA—Clean Water Act(or the Federal Water Pollution Control Act,33 U.S.C.§1251 et Agricultural Property—means the land for construction of a barn,agricul[ural building, seq) silo,stockyard,pen or other structural practices identified in Table II in the"Agricultural DOW—Division of Water Management Practices Catalog for Nonpoint Source Pollution in New York State" EAF—Environmental Assessment Form prepared by the Department in cooperation with agencies of New York Nonpoint Source ECL-Environmental Conservation Law Coordinating Committee(dated June 2007). EPA—U.S.Environmental Protection Agency HSG—Hydrologic Soil Group Alter Hydrology from Pre to Post-Development Conditions-means the post- MS4—Municipal Separate Storm Sewer System development peak flow rate(s)has increased by more than 5%of the pre-developed NOI—Notice of Intent condition for the design storm of interest(e.g.10 yr and 100 yr). NOT—Notice of Termination NPDES—National Pollutant Discharge Elimination System Combined Sewer-means a sewer that is designed to collect and convey both OPRHP—Office of Parks,Recreation and Historic Places "sewage"and"stormwater". Qf—Extreme Flood Qp—Overbank Flood Commence(Commencement of)Construction Activities-means the initial RRv—Runoff Reduction Volume disturbance of soils associated with clearing,grading or excavation activities;or other RWE—Regional Water Engineer construction related activities that disturb or expose soils such as demolition,stockpiling SEQR—State Environmental Quality Review of fill material,and the initial installation of erosion and sediment control practices SEQRA-State Environmental Quality Review Act required in the SWPPP.See definition for"Cons[ruc[ion Ac[iviry(ies)"also. SHPA—State Historic Preservation Act SPDES—State Pollutant Discharge Elimination System Construction Activit ies means an clearin radin excavation,fillin demolition SWPPP—Stormwater Pollution Prevention Plan Y� � Y g'g g' g' TMDL—Total Maximum Daily Load or stockpiling activities that result in soil disturbance.Clearing activities can include,but UPA—Uniform Procedures Act are not limited to,logging equipment operation,the cutting and skidding of trees,stump USDA—United States Department of Agriculture removal and/or brush root removal.Construction activity does not include routine WQv—Water Quality Volume maintenance that is pertormed to maintain the original line and grade,hydraulic capacity,or original purpose of a facility. Construction Site—means the land area where cons[ruc[ion ac[iviry(ies)will occur. See definition for"Commence(Commencemen[o�Cons[ruc[ion Ac[ivi[ies"and"Larger Common Plan of Developmen[or Sale"also. Dewatering—means the act of draining rainwater and/or groundwaterfrom building foundations,vaults or excavations/trenches. Direct Discharge(to a specific surtace waterbody)-means that runoff flows from a cons[ruc[ion si[e by overland flow and the first point of discharge is the specific surtace waterbody,or runoff flows from a cons[ruc[ion si[e to a separate storm sewer system 39 40 Appendix A Appendix A and the first point of discharge from the separate storm sewer system is the specific Larger Common Plan of Development or Sale-means a contiguous area where surtace waterbody. multiple separate and distinct cons[ruc[ion ac[ivi[ies are occurring,or will occur,under one plan.The term"plan"in"larger common plan of development or sale"is broadly Discharge(s)-means any addition of any pollutant to waters of the State through an defined as any announcement or piece of documentation(including a sign,public notice outlet or poin[source. or hearing,marketing plan,advertisement,drawing,permit application,State Environmental Quality Review Act(SEQRA)environmental assessmentform or other Embankment—means an earthen or rock slope that supports a road/highway. documents,zoning request,computer design,etc.)or physical demarcation(including boundary signs,lot stakes,surveyor markings,etc.)indicating that cons[ruc[ion Endangered or Threatened Species—see 6 NYCRR Part 182 of the Departmenfs ac[ivi[ies may occur on a specific plot. rules and regulations for definition of terms and requirements. For discrete construction projects that are located within a larger common plan of Environmental Conservation Law(ECL)-means chapter 43-B of the Consolidated development or sale that are at least 1/4 mile apart,each project can be treated as a Laws of the State of New York,entitled the Environmental Conservation Law. separate plan of development or sale provided any interconnecting road,pipeline or utility project that is part of the same"common plan"is not concurrently being disturbed. Equivalent(Equivalence)—means that the practice or measure meets all the performance,longevity,maintenance,and safety objectives of the technical standard Minimize—means reduce and/or eliminate to the extent achievable using control and will provide an equal or greater degree of water quality protection. measures(including best management practices)that are technologically available and economically practicable and achievable in light of best industry practices. Final Stabilization-means that all soil disturbance activities have ceased and a uniform,perennial vegetative cover with a density of eighty(80)percent over the entire Municipal Separate Storm Sewer(MS4)-a conveyance or system of conveyances pervious surtace has been established;or other equivalent stabilization measures,such (including roads with drainage systems,municipal streets,catch basins,curbs,gutters, as permanent landscape mulches,rock rip-rap orwashed/crushed stone have been ditches,man-made channels,or storm drains): applied on all disturbed areas that are not covered by permanent structures,concrete or pavement. (i) Owned or operated by a State,city,town,borough,county,parish,district, association,or other public body(created by or pursuant to State law)having General SPDES permit-means a SPDES permit issued pursuant to 6 NYCRR Part jurisdiction over disposal of sewage,industrial wastes,stormwater,or other 750-121 and Section 70-0117 of the ECL authorizing a category of discharges. wastes,including special districts under State law such as a sewer district, flood control district or drainage district,or similar entity,or an Indian tribe or Groundwater(s)-means waters in the saturated zone.The saturated zone is a an authorized Indian tribal organization,or a designated and approved subsurtace zone in which all the interstices are filled with water under pressure greater management agency under section 208 of the CWA that discharges to than that of the atmosphere.Although the zone may contain gas-filled interstices or surtace waters of the State; interstices filled with fluids other than water,it is still considered saturated. (ii) Designed or used for collecting or conveying stormwater; (iii) Which is not a combined sewer;and Historic Property—means any building,structure,site,object or district that is listed on (iv)Which is not part of a Publicly Owned Treatment Works(POTW)as defined the State or National Registers of Historic Places or is determined to be eligible for at 40 CFR 1222. listing on the State or National Registers of Historic Places. National Pollutant Discharge Elimination System(NPDES)-means the national Impervious Area(Cover)-means all impermeable surtaces that cannot effectively system for the issuance of wastewater and stormwater permits under the Federal Water infiltrate rainfall.This includes paved,concrete and gravel surtaces(i.e.parking lots, Pollution Control Act(Clean Water Act). driveways,roads,runways and sidewalks);building rooftops and miscellaneous impermeable structures such as patios,pools,and sheds. Natural Buffer—means an undisturbed area with natural cover running along a surtace water(e.g.wetland,stream,river,lake,etc.). Infeasible—means nottechnologically possible,or not economically practicable and achievable in light of best industry practices. New Development—means any land disturbance that does not meet the definition of Redevelopment Activity included in this appendix. 41 42 nvva�d�;:n nvva�d�;:n New York State Erosion and Sediment Control Certificate Program—a certificate Qualified Inspector-means a person that is knowledgeable in the principles and program that establishes and maintains a process to identify and recognize individuals practices of erosion and sediment control,such as a licensed Professional Engineer, who are capable of developing,designing,inspecting and maintaining erosion and Certified Professional in Erosion and Sediment Control(CPESC),Registered sediment control plans on projects that disturb soils in New York State.The certificate Landscape Architect,New York State Erosion and Sediment Control Certificate program is administered by the New York State Conservation District Employees Program holder or other Department endorsed individual(s). Association. It can also mean someone working under the direct supervision of,and at the same NOI Acknowledgment Letter-means the letter thatthe Department sends to an company as,the licensed Professional Engineer or Registered Landscape Architect, owner or operator to acknowledge the Departmenfs receipt and acceptance of a provided that person has training in the principles and practices of erosion and sediment complete Notice of Intent.This letter documents the owners or operators authorization control.Training in the principles and practices of erosion and sediment control means to discharge in accordance with the general permit for stormwater discharges from that the individual working under the direct supervision of the licensed Professional cons[ruc[ion ac[ivity. Engineer or Registered Landscape Architect has received four(4)hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Nonpoint Source-means any source of water pollution or pollutants which is not a Water Conservation District,or other Department endorsed entity.After receiving the discrete conveyance or poin[source permitted pursuant to Title 7 or 8 of Article 17 of initial training,the individual working under the direct supervision of the licensed the Environmental Conservation Law(see ECL Section 17-1403). Professional Engineer or Registered Landscape Architect shall receive four(4)hours of training every three(3)years. Overbank—means flow events that exceed the capacity of the stream channel and spill out into the adjacent floodplain. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspec[or qualifications. Owner or Operator-means the person,persons or legal entity which owns or leases the property on which the cons[ruc[ion ac[iviry is occurring; an entity that has Note:Inspections of any post-construction stormwater management practices that operational control over the construction plans and specifications,including the ability to include structural components,such as a dam for an impoundment,shall be pertormed make modifications to the plans and specifications;and/or an entity that has day-to-day by a licensed Professional Engineer. operational control of those activities at a project that are necessary to ensure compliance with the permit conditions. Qualified Professional-means a person that is knowledgeable in the principles and practices of stormwater management and treatment,such as a licensed Professional Performance Criteria—means the design criteria listed under the"Required Elements" Engineer,Registered Landscape Architect or other Department endorsed individual(s). sections in Chapters 5,6 and 10 of the technical standard,New York State Stormwater Individuals preparing SWPPPs that require the post-construction stormwater Management Design Manual,dated January 2015.It does not include the Sizing management practice component must have an understanding of the principles of Criteria(i.e.WQv,RRv,Cpv,Qp and Qf)in Part I.C.2.of the permit. hydrology,water quality management practice design,water quantity control design, and,in many cases,the principles of hydraulics.All components of the SWPPP that Point Source-means any discernible,confined and discrete conveyance,including but involve the practice of engineering,as defined by the NYS Education Law(see Article not limited to any pipe,ditch,channel,tunnel,conduit,well,discrete fissure,container, 145),shall be prepared by,or under the direct supervision of,a professional engineer rolling stock,concentrated animal feeding operation,vessel or other floating craft,or licensed to practice in the State of New York. landfill leachate collection system from which pollu[an[s are or may be discharged. Redevelopment Activity(ies)—means the disturbance and reconstruction of existing Pollutant-means dredged spoil,filter backwash,solid waste,incinerator residue, impervious area,including impervious areas thatwere removed from a project site within sewage,garbage,sewage sludge,munitions,chemical wastes,biological materials, five(5)years of preliminary project plan submission tothe local government(i.e.site plan, radioactive materials,heat,wrecked or discarded equipment,rock,sand and industrial, subdivision,etc.). municipal,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 the standards or guidance values adopted as provided in 6 NYCRR Regulated,Traditional Land Use Control MS4-means a city,town or village with Parts 700 et seq. land use control authority that is authorized to discharge under New York State DEC's 43 44 Appendix A Appendix A SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer Systems(MS4s)or the City of New York's Individual SPDES Permit Steep Slope—means land area designated on the current United States Department of for their Municipal Separate Storm Sewer Systems(NY-0287890). Agriculture("USDA")Soil Survey as Soil Slope Phase"D",(provided the map unit name is inclusive of slopes greater than 25%),or Soil Slope Phase E or F,(regardless of the Routine Maintenance Activity-means conshuc[ion ac[iviry that is pertormed to map unit name),or a combination of the three designations. maintain the original line and grade,hydraulic capacity,or original purpose of a facility, including,but not limited to: Streambank—as used in this permit,means the terrain alongside the bed of a creek or stream.The bank consists of the sides of the channel,between which the flow is confined. • Re-grading of gravel roads or parking lots, • Cleaning and shaping of existing roadside ditches and culverts that maintains Stormwater Pollution Prevention Plan(SWPPP)—means a project specific report, the approximate original line and grade,and hydraulic capacity of the ditch, including construction drawings, that among other things: describes the construction • Cleaning and shaping of existing roadside ditches that does not maintain the activity(ies),identifies the potential sources of pollution at the cons[ruc[ion si[e;describes approximate original grade,hydraulic capacity and purpose of the ditch if the and shows the stormwater controls that will be used to control the pollutants(i.e.erosion changes to the line and grade,hydraulic capacity or purpose of the ditch are and sediment controls; for many projects, includes post-construction stormwater installed to improve water quality and quantity controls(e.g.installing grass management controls);and identifies procedures the owneroropera[orwill implementto lined ditch), comply with the terms and conditions of the permit. See Part III of the permit for a • Placement of aggregate shoulder backing that stabilizes the transition between complete description of the information that must be included in the SWPPP. the road shoulder and the ditch or embankmen[, • Full depth milling and filling of existing asphalt pavements,replacement of Surtace Waters of the State-shall be construed to include lakes,bays,sounds, concrete pavement slabs,and similar work that does not expose soil or disturb ponds,impounding reservoirs,springs,rivers,streams,creeks,estuaries,marshes, the bottom six(6)inches of subbase material, inlets,canals,the Atlantic ocean within the territorial seas of the state of New York and • Long-term use of equipment storage areas at or near highway maintenance all other bodies of surface water,natural or artificial,inland or coastal,fresh or salt, facilities, public or private(except those private waters that do not combine or effect a junction • Removal of sediment from the edge of the highway to restore a previously with natural surtace waters),which are wholly or partially within or bordering the state existing sheet-flow drainage connection from the highway surtace to the or within its jurisdiction.Waters of the state are further defined in 6 NYCRR Parts 800 to highway ditch or embankmen[, 941. • Existing use of Canal Corp owned upland disposal sites for the canal,and • Replacement of curbs,gutters,sidewalks and guide rail posts. Temporarily Ceased—means that an existing disturbed area will not be disturbed again within 14 calendar days of the previous soil disturbance. Site limitations—means site conditions that prevent the use of an infiltration technique and or infiltration of the total WQv.Typical site limitations include:seasonal high Temporary Stabilization-means that exposed soil has been covered with material(s) groundwater,shallow depth to bedrock,and soils with an infiltration rate less than 0.5 as set forth in the technical standard,New York Standards and Specifications for inches/hour.The existence of site limitations shall be confirmed and documented using Erosion and Sediment Control,to prevent the exposed soil from eroding.The materials actual field testing(i.e.test pits,soil borings,and infiltration test)or using information can include,but are not limited to,mulch,seed and mulch,and erosion control mats from the most current United States Department of Agriculture(USDA)Soil Survey for (e.g.jute twisted yarn,excelsior wood fiber mats). the County where the project is located. Total Maximum Daily Loads(TMDLs)-A TMDL is the sum of the allowable loads of a Sizing Criteria—means the criteria included in Part I.C2 of the permit that are used to single pollutant from all contributing point and nonpoin[sources.It is a calculation of the size post-construction stormwater management control practices.The criteria include; maximum amount of a pollutant that a waterbody can receive on a daily basis and still Water Quality Volume(WQv),Runoff Reduction Volume(RRv),Channel Protection meet wa[erqualiry s[andards,and an allocation of that amountto the pollutanYs Volume(Cpv),Overbank Flood(Qp),and Extreme Flood(Qf). sources.A TMDL stipulates wasteload allocations(WLAs)for poin[source discharges, load allocations(LAs)for nonpoin[sources,and a margin of safety(MOS). State Pollutant Discharge Elimination System(SPDES)-means the system established pursuant to Article 17 of the ECL and 6 NYCRR Part 750 for issuance of Trained Contractor-means an employee from the contracting(construction)company, permits authorizing discharges to the waters of the state. identified in Part III.A.6.,that has received four(4)hours of Department endorsed 45 46 nvva�d�;:n training in proper erosion and sediment control principles from a Soil and Water AppENDIX B—Required SWPPP Components by Project Type Conservation District,or other Department endorsed entity.After receiving the initial training,the hained con[rac[or shall receive four(4)hours of training every three(3) years. Table 1 Construction Activities that Require the Preparation of a SWPPP That Only It can also mean an employee from the contracting(construction)company,identified in Includes Erosion and Sediment Controls Part I I I.A.6.,that meets the qualified inspec[or 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 underthe direct supervision of,and at the same COmpany as,the liCensed PfOfessi0nal Engineef Of Registefed LandsCape AfChiteCt, •Single family home not located in one of the watersheds listed in Appendix C or not directly pfOVided they haVe reCeiVed fOUf(4)hOUfs Of Department endOfsed tfaining in pfOpef discharging to one ofthe 303(d)segments listed in Appendix E •Single family residential subdivisions with 25°k or less impervious cover at total site build-out and efOsiOn and Sediment COntf01 pfinCiples ffOm a SOiI and Watef COnsefVatiOn DistfiCt,Of not located in one ofthe watersheds listed in Appendix C and not directly discharging to one of the Othef DepaRment endOfsed entity). 303(d)segments listed in Appendix E •Constmction of a barn or other agricuttural building,silq stock yard or pen. The[rained con[rac[or is responsible for the day to day implementation of the SWPPP. The following construction activities that involve soil disturbances between five thousand(5000) Uniform Procedures Act(UPA)Permit-means a permit required under 6 NYCRR square feet and one(1)acre of land: Part 621 of the Environmental Conservation Law(ECL),Article 70. All construction activities located in the watersheds identifed in Appendix D that involve soil Watef QUality Standafd-means SUCh measUfes Of pUfity Of qUality fOf any Watefs in disturbances between fve thousand(5,000)square feet and one(1)acre of land. relation to their reasonable and necessary use as promulgated in 6 NYCRR Part 700 et Seq. The following construction activities that involve soil disturbances of one(1�or more acres of land: • Installation of underground, linear utilities; such as gas lines, fber-optic cable, cable N, elecMc,telephone,sewer mains,antl water mains •Environmental enhancement projects,such as wetland mitigation projects,stormwater retrofts and stream restoration projects • Pond construction •Linear bike paths running through areas with vegetative cover,including bike paths surfaced with an impervious cover •Cross-countryskitrailsandwalking/hikingtrails •Sidewalk,bike path orwalking path projects,surfaced with an impervious cover,that are not part of residential,commercial or institutional development; •Sidewalk,bike path or walking path projects,surfaced with an impervious cover,that include incidental shoulder or wrb work along an existing highway to support constmction ofthe sidewalk, bike path orwalking path. •Slope stabilization projects •Slope flattening that changes the grade ofthe site,but does not significantly change the runoff characteristics 47 48 Appendix B Appendix B T2b10 1(COf1tIf1U0dJ CONSTRUCTION ACTIVITIES 7HAT REQUIRE THE PREPARATION OF A T2b10 2 SWPPP CONSTRUCTION ACTNITIES THAT REQUIRE 7HE PREPARATON OF A SWPPP THAT INCLUDES THAT ONLY INCLUDES EROSION AND SEDIMENT CON7F20LS POSTCONSTRUCTON STORNNJAlER MANAGEMENT PRACTICES The following construction activities that involve soil disturbances of one(1)or more acres of lantl: The following construction activities that involve soil disturbances of one(1)or more acres of land: •Spoil areas that will be covered with vegetation • Vegetated open space projects(i.e.recreational parks,lawns,meadows,felds,downhill ski trails) • Single family home located in one ofthe watersheds listed in Appendix C or directlydischarging to excluding projects that atter hydrologyfrom pre to post development conditions, one ofthe 303(d)segments listed in Appendix E •Athletic felds(natural grass)that do not include the construction or reconstmction of impeniious • Single family home that disturbs fve(5)or more acres of lantl area and do not alter hydrologyfrom pre to post development conditions • Single family residential subdivisions located in one ofthe watersheds listed in Appendix C or • Demolition project where vegetation will be established,and no redevelopment is planned directly discharging to one ofthe 303(d)segments listed in Appendix E •Werhead elecMc transmission line project that does not include the constmction of permanent • Single family residential subdivisions that involve soil disNrbances of between one(1)and fve(5) access roads or parking areas surtaced with impervious cover acres of land with greater than 25°k impervious cover at total site build-out •Siructurel prectices as identifed in Table II in ihe"Agnculturel Management Prectices Catalog for • Single family residential subdivisions that involve soil disNrbances offve(5)or more acres of land, NonpoiN Source Pollution in New York State",excluding projecis ihat involve soil disturbances of and single family residential subdivisions that involve soil disturbances of less than five(5)acres greater than five acres and constmction activities that include the constmction or reconstmction of that are part of a larger common plan of development or sale that will ultimately disturb five or more impervious area acres of land •Temporary access roads,median crossovers,detour roads,lanes,or other temporary impervious • Multi-family residential developments;includes duplexes,townhomes,condominiums,senior areas that will be restored to pre-constmction conditions once the constmction activity is complete housing complexes,apartment complexes,and mobile home parks • Airports • Amusement parks • Breweries,cidenes,and winenes,including establishments constmcted on agncultural land • Campgrounds • Cemeteries that include the constmction or reconstmction of impervious area(>5°k of disturbed area)or alter the hydrology from pre to post development conditions • Commercial developments • Churches and other places of worship • Constmction of a barn or other agricuttural building(e.g.silo)and stmcNral practices as identifed in Table II in ihe"Agnculturel Management Prectices Catalog for NonpoiN Source Pollution in New York State"ihat include ihe consiruction or reconsiruction of impervious area,exclutling projects that involve soil disturbances of less than fve acres. • Golfcourses • Institutional development;includes hospitals,prisons,schools and colleges • Industrial facilities;includes industrial parks • Landflls • Municipal facilities;includes highway gareges,irensfer stations,offce buildings,POTW's,water treatment plants,antl water storage tanks • Office complexes • Playgrounds that include the construction or reconstruction of impervious area • Sports complexes • Racetracks;includes racetracks with earthen(dirt)surtace • Road constmction or reconstruction,including roads constmcted as part of the constmction activities listed in Table 1 49 50 nvva�d�;:e Table 2(Continued) APPENDIX C—Watersheds Requiring Enhanced Phosphorus Removal CONSTRUCTION ACTNITES THAT REQUIRE THE PREPARATON OF A SWPPP THAT INCLUDES POST-CONS7F2UCTON STORNNJATER MANAGENENT PRACTICES Watersheds where owners or operators of construction activities identified in Table 2 of Appendix B must prepare a SWPPP that includes post-construction The following construction activities that involve soil disturbances of one(1)or more acres of stormwater management practices designed in conformance with the Enhanced lantl: Phosphorus Removal Standards included in the technical standard,New York • Parking lot constmction or reconstmction,including parking lots constructed as part ofthe State StofmWatef Management Design ManUal("Design ManUal°). construction activities listed in Table 1 • Athletic felds(natural grass)that include the constmction or reconstruction of impervious area(>5°k ofdisNrbed area)oralterthe hydrologyfrom pre to postdevelopmentcontlitions •Enti�e New Yo�k City Wate�shed located east of the Hudson Rive�-Figu�e 1 • Athletic felds with artificial turt •OnOndaga Lake Watefshed-FigUfe 2 • Permanent access roads,parking areas,substations,compressor stations and well drilling pads, •GfeenWOod Lake Watefshed-FigUfe 3 surfaced with impervious cover.and constmcted as part of an over-head elecMc transmission line •OsCaWana Lake Watefshed—FigUfe 4 project,wind-power project,cell tower project,oil or gas well drilling project,sewer orwater main •Kindefh0ok Lake Watefshed—Fi Ufe 5 project or other linear utility project • Sidewalk,bike path or walking path projects,surfaced with an impervious cover,that are part of a resitlential,commercial or instiNtional tlevelopment • Sidewalk,bike path orwalking path projects,surfaced with an impervious cover,that are part of a highway construction or reconstruction project • All other construction activities that include the constmction or reconstmction of impeniious area or atter the hydrology from pre to post development conditions,and are not listed in Table 1 51 52 Appendix C Appendix C Fiqure 1-New York Citv Watershed East of the Hudson Fiqure 2-Onondaqa Lake Watershed �� �,,� Ll ..� ?EEKP;1Pli �,,.�� � CLAY I CICERU � � , , `� Er..�,'rist-Ki�� �) �h. � f�kWLI;JCi f VAN BUREN ' Nd��H US�������- . ..`'r,_� "'... -Z.— \ +. �....�.u-..�- � �14� � '���IV&R OL �''��,�```i, ' �� SALINA �NL�1US .ATTER�Oh, !�� kENT '��� � - `, � V. EAS7 5Yt2A::LISE— �? � �Gnh4�US G D� . ��y �• I �f 5011THEAST � ELBRfDG6 :�SYRACU^'PE��� � , - � oIIT 1�•L1 iP._LC .. -���� '�� � [7EWlTT 1�'.�' GRRh9EL B�fJSTER ... _ .. -.. .—� ' ,' � ' ' � , .. Ah2��L4U5� ���I,. �. � . �, . . v L—....i I PJ RiHSR.LF."v1 IS�K_��A7EL.�$ I ���N���� �.I f SOhic�25 l—� . �� �I ��"r fird T � � -�W'156pR � Y RKTOIN I '- LAFAYETTE � EUFpR�.7 ,-�� AC] ^JC�•RiC:��� � .. Mol:�ra� ;�-..CG . .. ,� �� ��'. "• :p.STLE . .. ❑TISCO '�- �.._.__—__— . —.—,..— � ._., � �— �..rT+i:�:�T� � PAF�DF3D [ rULI.Y� � � . �,_ s.:.r.r , �, . �_ , �. - •-' I -•, t_ �..—.__ —�_� `. Phr9sphorus Wale�`s�ed�� �� � I � i�P.• 3O�I � I �REBLE I I . EDH Watershed ., , i I �, 53 54 nvva�d�;:c nvva�d�;:c Fiqure 3-Greenwood Lake Watershed Fiqure 4-Oscawana Lake Watershed PHILIPST�WN WARWICK��� xENT PUTNAM VALLEY I •�. � GREENW�Q❑ LAKE �� - , . .. . .j� � --05CAWANALAHE . Phn;q�hu�u.;W:�1.vahcd 4 � � I, ` _ - f'. } � CARI�IEL ��.,Pnospnwus V�tershed 55 56 Appendix C Fiqure 5-Kinderhook Lake Watershed APPENDIX D—Watersheds with Lower Disturbance Threshold Watersheds where owners or operators of construction activities that involve soil disturbances between five thousand(5000)square feet and one(1)acre of land must obtain coverage under this permit. SANd LAKE LAS i GKE LNF3 USi f r� Entire New York City Watershed that is located east of the Hudson River-See Figure 1 in Appendix C Nnssr.0 scuooncK I NEW LEBAN J ICINOERHOOIC � �� CFiATHMA e,w.a.nra L'A1 ATIf T.Yillape.cr GRy 6ountlay�o�Nex lbrk Siate pq 0 1 2 -0�I LJ KnticTook Lakc WatpaM1ctl �^ 57 58 303(d)Segments Impaired by Construction Related Pollutant(s) APPENDIX E—303(d)Segments Impaired by Construction Related Pollutant(s) ouechess Fall Kill and eri6s Nuerienrs Dutchess Hillside Lake Nutrientr List of 303(d)segments impaired by pollutants related to construction ectiviry(e.g.silt,sediment Dutchess Wappingers Lake Nutrienrs or nutrients).The list was developed using"The Final New York State 2016 Section 303(d)List Dutchess Wa Lake 5ilt/5ediment of Impaired Waters Requiring a TMDL/Other Strategy"dated November 2016.Owners or ppingers operators of single family home and single family residential subdivisions with 25%or less total Erie Beeman Creek and tri6s Nutrients impervious cover at total site build-out that involve soil disturbances of one or more acres of Erie Ellimtt Creek,Lower,and tri6s 5ilt/5ediment land,but less than 5 acres,and directly discharge to one of the listed segments below shall Erie Ellimtt Creek,Lower,and tri6s Nutrients prepare a SWPPP that includes post-construction stormwater management prectices designed Erie Green Lake Nutrients in conformance with the New York State Stormwater Management Design Manual('Design Erie LitHe 5isterCreek,Lower,and tri6s Nutrienrs Manual"),dated January 2015. Erie MurderCreek,Lower,and tri6s Nutrients Erie Rush Creek and tri6s Nutrients Erie Scajaquada Creek,Lower,and tri6s Nutrients Erie ScajaquadaCreek,Middle,andtri6s Nutrients COUNTY WATERBODY POLLUTANT Erie ScajaquadaCreek,Upper,andtri6s Nutrientr Al6any Ann Lee(Shakers)Pond,Stump Pond Nutrientr Erie South Branch Smoke Cr,Lower,and tri6s Silt/Sediment Al6any BasicCreekReservoir Nutrientr Erie SouthBranch5mokeCr,Lower,andtri6s Nutrientr Allegany Amity Lake,Saunders Pond Nutrientr Bronx Longlsland5ound,Bronx Nutrientr Essex LakeChamplain,MainLake,South Nutrientr Bronx Van CortlandtLake Nutrientr Essex Lake Champlain,South Lake Nutrients Broome Fly Pond,Deer Lake,Sky Lake Nutrientr Essex Wills6oro Bay Nutrientr Broome MinorTri6stoLowerSusquehanna(north) Nutrientr Genesee BigelowCreekandtri6s Nutrientr Broome WhitneyPointLake/Reserv Nutrientr Genesee BlackCreek,Middle,andm ortri6s Nutrients Cattaraugus AlleghenyRiver/Reservoir o Nutrientr Genesee BlackCreek,Upper,andm ortri6s Nutrients Genesee BowenBrookandtri6s Nutrientr Cattaraugus Beaver(Alma)Lake Nutrientr Genesee LeRoy Reservoir Nutrientr Cattaraugus Case Lake Nutrientr Cattaraugus Linlym/CIu6 Pond Nutrientr Genesee Oak Orchard Cr,Upper,and tri6s Nutrientr Ca Duck Lake Nutrientr Genesee Tonawanda Creek,Middle,Main Stem Nutrientr yuga Greene Schoharie Reservoir Silt/Sediment Cayuga LitHe Sodus Bay Nutrientr Greene Sleepy Hollow Lake Silt/Sediment Chautauqua BearLake Nutrientr Herkimer SteeleCreektri6s Silt/Sediment Chautauqua ChadakoinRiverandtri6s Nutrientr Herkimer SteeleCreektri6s Nutrientr Chautauqua Chautauqua Lake,North Nutrientr Jefferson Moon Lake Nutrientr Chautauqua Chautauqua Lake,South Nutrientr Chautauqua FindleyLake Nutrientr Kings HendrixCreek Nutrients Chautauqua Hul6urt/ClymerPond Nutrientr Kings ProspectParkLake Nutrientr Clinton GreatChazy River,Lower,Main Stem Silt/Sediment Lewis Mill Creek/South Branch,and tri6s Nutrientr Clinton Lake Champlain,Main Lake,Middle Nutrientr Livingston Christie Creek and tri6s Nutrientr Clinton Lake Champlain,Main Lake,North Nutrientr Livingston Conesus Lake Nutrientr Colum6ia KinderhookLake Nutrientr Livingston MiIlCreekandminortri6s Silt/Sediment Colum6ia Ro6insonPond Nutrientr Monroe BlackCreek,Lower,andm ortri6s Nutrientr Monroe Buck Pond Nutrientr Cortland Dean Pond Nutrientr Monroe Cran6erry Pond Nutrientr 59 60 303(d)Segments Impaired by Construction Related Pollutant(s) 303(d)Segments Impaired by Construction Related Pollutant(s) Monroe Lake Ontario 5horeline,Westem Nutrients Onondaga Onondaga Lake,northem end Nutrientr Monroe LongPond Nutrientr Onondaga OnondagaLake,southemend Nutrientr Monroe MiIlCreekandtri6s Nutrientr Ontario GreatBrookandminortri6s Silt/Sediment Monroe MiIlCreek/BluePondOuHetandtri6s Nutrientr Ontario GreatBrookandminortri6s Nutrientr Monroe MinorTri6stolrondequoitBay Nutrientr Ontario HemlockLakeOuHetandminortri6s Nutrientr Monroe RochesterEm6ayment-East Nutrientr Ontario HoneoyeLake Nutrientr Monroe RochesterEm6ayment-West Nutrientr Orange GreenwoodLake Nutrientr Monroe Ship6uildersCreekandtri6s Nutrientr Orange MonhagenBrookandtri6s Nutrientr Monroe ThomasCreek/WhiteBrookandtri6s Nutrientr Orange OrangeLake Nutrientr Nassau BeaverLake Nutrientr Orleans LakeOntario5horeline,Westem Nutrientr Nassau CamaansPond Nutrientr Orleans LakeOntario5horeline,Westem Nutrientr Nassau EastMeadowBrook,Upper,andtri6s Silt/Sediment Oswego LakeNeatahwanta Nutrientr Nassau EastRockawayChannel Nutrientr Oswego PleasantLake Nutrients Nassau GrantParkPond Nutrientr Putnam BogBrookReservoir Nutrientr Nassau Hempstead Bay Nutrientr Putnam Boyd Comers Reservoir Nutrientr Nassau Hempstead Lake Nutrientr Putnam Croton Falls Reservoir Nutrientr Nassau HewlettBay Nutrientr Putnam DivertingReservoir Nutrientr Nassau HoglslandChannel Nutrientr Putnam EastBranchReservoir Nutrientr Nassau Longlsland5ound,NassauCountyWaters Nutrientr Putnam LakeCarmel Nutrients Nassau Massapequa Creek and tri6s Nutrientr Putnam Middle Branch Reservoir Nutrientr Nassau Mil6um/Parsonage Creeks,Upp,and tri6s Nutrientr Putnam Oscawana Lake Nutrientr Nassau ReynoldsChannel,west Nutrientr Putnam PalmerLake Nutrientr Nassau TidalTri6stoHempsteadBay Nutrientr Putnam WestBranchReservoir Nutrients Nassau Tri6s(fresh�toEastBay Nutrientr Queens BergenBasin Nutrientr Nassau Tri6s(fresh�toEastBay Silt/Sediment Queens FlushingCreek/Bay Nutrientr Nassau Tri6s to Smith/Halls Ponds Nutrientr Queens Jamaica Bay,Eastem,and tri6s(Queens) Nutrientr Nassau WoodmereChannel Nutrientr queens KissenaLake Nutrientr New Vork Harlem Meer Nutrientr Queens Meadow Lake Nutrientr New Vork The Lake in Central Park Nutrientr queens Willow Lake Nutrientr Niagara BergholtzCreekandtri6s Nutrientr Rensselaer NassauLake Nutrientr Niagara Hyde Park Lake Nutrientr Rensselaer Snyders Lake Nutrientr Niagara Lake Ontario 5horeline,Westem Nutrientr Richmond Grasmere Lake/Bradys Pond Nutrientr Niagara LakeOntario5horeline,Westem Nutrientr Rockland CongersLake,SwartoutLake Nutrientr Oneida Ballou,Nail Creeksand tri6s Nutrients Rockland Rockland Lake Nutrients Onondaga Har6orBrook,Lower,and tri6s Nutrientr Saratoga Ballston Lake Nutrientr Onondaga LeyCreekandtri6s Nutrientr Saratoga DwaasKillandtri6s Silt/Sediment Onondaga MinorTri6stoOnondagaLake Nutrientr Saratoga DwaasKillandtri6s Nutrientr Onondaga Ninemile Creek,Lower,and tri6s Nutrientr Saratoga Lake Lonely Nutrientr Onondaga Onondaga Creek,Lower,and tri6s Nutrientr Saratoga Round Lake Nutrientr Onondaga Onondaga Creek,Middle,and tri6s Nutrients Saratoga Tri6s ro Lake Lonely Nutrients 61 62 303(d)Segments Impaired by Construction Related Pollutant(s) 303(d)Segments Impaired by Construction Related Pollutant(s) Schenectady Collins Lake Nutrientr Warren Huddle/Finkle Brooksand tri6s Silt/Sediment Schenectady DuaneLake Nutrientr Warren IndianBrookandtri6s Silt/Sediment Schenectady MariavilleLake Nutrientr Warren LakeGeorge Silt/Sediment Schoharie EnglevillePond Nutrientr Warren Tri6stoL.George,VillageofLGeorge Silt/Sediment Schoharie SummitLake Nutrientr Washington CossayunaLake Nutrientr Seneca ReederCreekandtri6s Nutrientr Washington LakeChamplain,5outhBay Nutrientr St.Lawrence Black Lake OuHet/Black Lake Nutrientr Washington Tri6s to L.George,EastShore Silt/Sediment St.Lawrence Fish Creek and minortri6s Nutrientr Washington Wood Cr/Champlain Canal and minortri6s Nutrientr Steu6en SmithPond Nutrientr Wayne PortBay Nutrientr Suffolk Agawam Lake Nutrientr Westchester Amawalk Reservoir Nutrients Suffolk Big/Little Fresh Ponds Nutrientr Westchester Blind Brook,Upper,and tri6s Silt/Sediment Suffolk Canaan Lake Silt/Sediment Westchester Cross River Reservoir Nutrientr Suffolk Canaan Lake Nutrientr Westchester Lake Katonah Nutrientr Suffolk Flanders Bay,West/LowerSawmill Creek Nutrientr Westchester Lake Linmindale Nutrientr Suffolk Fresh Pond Nutrientr Westchester Lake Meahagh Nutrientr Suffolk GreatSouth Bay,East Nutrientr Westchester Lake Mohegan Nutrientr Suffolk GreatSouthBay,Middle Nutrientr Westchester LakeShenorock Nutrientr Suffolk GreatSouthBay,West Nutrientr Westchester Longlsland5ound,Westchester(East) Nutrients Suffolk Lake Ronkonkoma Nutrientr Westchester Mamaroneck River,Lower Silt/Sediment Suffolk Longlsland5ound,SuffolkCounty,West Nutrientr Westchester MamaroneckRiver,Upper,andminortri6s Silt/Sediment Suffolk Mattituck(Marratooka)Pond Nutrientr Westchester Muscoot/Upper New Croton Reservoir Nutrientr Suffolk Meetinghouse/TerrysCreeksandtri6s Nutrientr Westchester NewCrotonReservoir Nutrients Suffolk Mill and Seven Ponds Nutrientr Westchester Peach Lake Nutrientr Suffolk Millers Pond Nutrientr Westchester Reservoir No.l(Lake Isle) Nutrientr Suffolk Moriches Bay,East Nutrientr Westchester Saw Mill River,Lower,and tri6s Nutrientr Suffolk Moriches Bay,West Nutrientr Westchester Saw Mill River,Middle,and tri6s Nutrientr Suffolk Pemnic River,Lower,and tidal tri6s Nutrientr Westchester Sheldrake Riverand tri6s Silt/Sediment Suffolk quantuck Bay Nutrients Westchester Sheldrake Riverand tri6s Nutrients Suffolk ShinnemckBayandlnlet Nutrientr Westchester SilverLake Nutrientr Suffolk Tidaltri6stoWestMorichesBay Nutrientr Westchester TeatownLake Nutrientr Sullivan Bodine,MontgomeryLakes Nutrientr Westchester TiticusReservoir Nutrientr Sullivan Davies Lake Nutrientr Westchester Truesdale Lake Nutrients Sullivan EvensLake Nutrientr Westchester WallacePond Nutrientr Sullivan Pleasure Lake Nutrientr Wyoming Java Lake Nutrientr Tompkins Cayuga Lake,Southem End Nutrientr Wyoming Silver Lake Nutrientr Tompkins Cayuga Lake,Southem End Silt/Sediment Tompkins Owasm Inlet,Upper,and tri6s Nutrients Ulster Ashokan Reservoir Silt/Sediment Ulster EsopusCreek,Upper,andminortri6s Silt/Sediment Warren Hague Brook and tri6s Silt/Sediment 63 64 APPENDIX F—List of NYS DEC Regional Offices 50 CiaaE Rono 50 CiaaE Rono � Nn55nunrvoSUFFo�x SiorvvBaoox,Nr11]90 SiorvvBaoox,Nr11]903409 TE�.(631)444-0%5 TE�.(631)444d405 1HurviEaSPoirviP�azn, 1HurvhaSPoirviP�azn, 2 Baorvx,Kirv�S,NEwVoax, 4]-00215iSi. 4]-40215iSi. QUEErvSnrvoRicxmorvo Lorv�IS�nrvoCiir,Nr11101-540] Lorv�IS�nrvoQir,Nr11101b40] TE�.(]18)482-499] TE�.(/18)482-0933 DuicxE55,0anrv�E,Puirvnm, 21SouixPuiiCoarvEaSRono 100W��5mEAVErvuE,SuiiE1w 3 Rocx�nrvo,Su��rvnrv,U�siEa NEwPn�rz,Nv12561-1696 WxiiEP�nirv5,Nv10603 nnuWEsicxEsiEa Te�.(845)2563059 Te�.(914)428-2505 A�anrvv,Co�umain, DE�nwnaE,GaEErvE, 1150NoaixWESrcoiiRono 1130NoaixWESicoiiRono Q Morvi�omEav,OisE�o, ScxErvEcinov,Nv 12306-2014 ScxErvEcrnov,Nv 12306-2014 RErv55E�nEa,ScxErvEcinov Te�.(518)35]-20G9 Te�.(518)35]-2045 nrvo ScxoxnaiE C�irviorv,E55Ex,Fxnnn�in, ���SSiniERouiE86,POBox296 232Go�FCouaSERono 5 Fu�iorv,Hnmi�iorv, qpygaoox,Nv129]]-029G WnaaErvSaua�,Nv12885-11]2 TE�. Snanio�n,Wnxxennnu ���518)89]-1234 (518)623-12(10 Wnsxirv�iorv HERKIMER�EFFERSON, STATEOFFICEBUILDING STATEOFFICEBUILDING 6 LEWIS,ONEIDAAND 31]WASHINGTONSTREET 20]GENESEESTREET ST.LAWRENCE WATERTOWN,NV 136013]8] UTICA,NV 13501-2885 TEL.(315) TEL.(315)]85-2245 ]93-2554 BROOME,CAVUGA, CHENANGO,CORTLAND, 615 ERIE BLVD.WEST 615 ERIE BLVD.WEST ] MADISON,ONONDAGA, SVRACUSE,NV 13204-2400 SVRACUSE,NV 13204-2400 OSWEGO,TIOGA AND TEL.(315)426-]438 TEL.(315)426-]500 TOMPKINS CHEMUNG,GENESEE, LIVINGSTON,MONROE, 62]4EASTAVON-LIMA 62]4EASTAVON-LIMARD. $ OMARIO,ORLEANS, ROADAVON,NY 144149519 AVON,NY 14414-9519 SCHUVLER,SENEClS �L.(585)226-2466 TEL.(585)226-2466 STEUBEN,WAVNE AND VATES ALLEGANV, Z�pMICHIGANAVENUE 2]OMICHIGANAVENUE 9 CATTARAUGUS, gUFFALO,NY 14203-2999 BUFFALO,NV14203-2999 CHAUTAUQUA,ERIE, �L.(/16)851-]165 TEL.(/16)851-]0]0 NIAGARAAND WVOMING 65 Appendix G Historic Preservation/Endangered Species Documentation a �'? ���„ "� ��'�a.-�"�Y�`w',.� �v�+' `�N� � ''`� m � � � � � �� �a� � ' E a� ��,� ��,+ -�' n^k�,,, '.wY"; ��c��� �`-� o A �. .�'°�'. �1•. �X ��'��t�}'�'4!�� �'i�,�'�G���cm'�'.�" �l'a .�� � � Q1 � a �l" +"�w��°.�' °'+y"±�'�! .i. .s �. �: � i — �vr. � � a,�'�r '�n^ 17i5'm� ll,�,r.��n+(' m.. w . `� � � . t � °� '�- ` � PM�"►+� * t �" � t�1 �� t g �« �*'� oF � h C � �*�y�,�4.� + .������.�"°�"��r �x�'�,� � �..+s "b �� � i �' ��e. � � . a�i f0 � "',Ir, ��� �a� �'� t �''��'��a. 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Curtin, Ph.D. Kirsten Dymond, B.A. September, 2019 MANAGEMENTSUMMARY SHPO Project Review Number: 18PR04072 Involved State and Federal Agencies: CORPS Phase of Survey: Phase 1A/1 B Location Information Location: 227 Kaydeross Ave East located to the west and east side of the bend in the road Minor Civil Division: Saratoga Springs County: Saratoga Survey Area Western area Length: Max 330 m (1083 ft) Wdth: Max 420 m (1376 ft) Number of Acres Surveyed: 23+/- ac (9 ha) Eastern area Length: Max 185 m (606 ft) Wdth: Max 56 m (184 ft) Number of Acres Surveyed: 2+/- ac(0.7 ha) USGS 7.5 Minute Quadrangle Map: Saratoga Springs Archaeological Survey Overview Number and Interval of Shovel Tests: 301 @ 7.5-15 meters (25-50 ft) Number and Size of Units: n/a Wdth of Plowed Strips: n/a Surface Survey Transect Interval: n/a Results of Archaeological Survey Number and Name of Prehistoric Sites: 5, Kaydeross Ave. Precontact 1-5 Sites Number and Name of Historic Sites: 1, Kaydeross Ave. Historic Site. Number and Name of Sites Recommended for Phase II/Avoidance: All 6 sites Results of Architectural Survey Number of buildings/structures/cemeteries within Project Area: 2 (house and barn) Number of buildings/structures/cemeteries adjacent to Project Area: 0 Number of previously determined NR Listed or Eligible bu ild i ngs/structu res/cemeteries/d istricts: 0 Report Authors: Edward V. Curtin, Ph.D. and Kirsten Dymond, B.A. Report Date: September 2019 i TABLE OF CONTENTS INTRODUCTION............................................................................................................................. 1 Project Location and Description............................................................................................ 1 Purpose and Scope of Work................................................................................................... 1 ENVIRONMENTAL SETTING......................................................................................................... 1 SITE FILE RESEARCH................................................................................................................... 3 NATIONAL REGISTER OF HISTORIC PLACES............................................................................ 4 PREVIOUS ARCHAEOLOGICAL RESEARCH .............................................................................. 5 HISTORIC MAPS RESEARCH ....................................................................................................... 6 MAP DOCUMENTED STRUCTURES ............................................................................................ 6 ARCHAEOLOGICAL SENSITIVITY................................................................................................ 7 PRIOR DISTURBANCE .................................................................................................................. 7 PHASE 1A SUMMARY AND RECOMMENDATIONS .................................................................... 7 PHASE 1 B ARCHAEOLOGICAL FIELD INVESTIGATION ............................................................ 7 SurveyStrategy....................................................................................................................... 8 PHASE 1 B ARCHAEOLOGICAL SURVEY RESULTS................................................................... 8 SoilStratigraphy...................................................................................................................... 8 Precontact Period Artifacts ..................................................................................................... 9 Historic Period Artifacts........................................................................................................... 9 ARCHAEOLOGICAL SITES............................................................................................................ 9 Kaydeross Ave. 1 Precontact Site .......................................................................................... 9 Kaydeross Ave. Historic Site................................................................................................. 10 Kaydeross Ave. 2 Precontact Site ........................................................................................ 11 Kaydeross Ave. 3 Precontact Site ........................................................................................ 11 Kaydeross Ave. 4 Precontact Site ........................................................................................ 11 Kaydeross Ave. 5 Precontact Site ........................................................................................ 11 PHASE 1 B ARCHAEOLOGICAL SURVEY SUMMARY AND RECOMMENDATIONS................ 11 REFERENCES CITED .................................................................................................................. 12 APPENDIX A: FIGURES............................................................................................................... 13 APPENDIX B: PHOTOS................................................................................................................ 31 APPENDIX C: SHOVEL TEST PIT RECORD............................................................................... 36 APPENDIX D: ARTIFACT CATALOG........................................................................................... 48 ii INTRODUCTION Project Location and Description Curtin Archaeological Consulting, Inc. has been retained by Mr. Kenneth Scott to conduct a Phase 1 archaeological survey of the proposed residential development at 227 Kaydeross Avenue East, City of Saratoga Springs, Saratoga County, New York. The proposed project includes larger and smaller development parcels on the west and east sides, respectively, of Kaydeross Avenue East. Planned construction includes houses and roadways. The general project location is shown on Figure 1. The Area of Potential Effect (APE) is shown in Figures 2-4. Purpose and Scope of Work The purpose of the Phase 1 archaeological survey is to identify the presence or absence of archaeological sites within the project area. The scope of work for this undertaking includes: (1) assessment of the environmental setting and visible indications of prior disturbance; (2) compilation and interpretation of background information including a site file search and map research; (3) appropriate archaeological fieldwork; and (4) a report of findings with recommendations. ENVIRONMENTAL SETTING The project site is located in part on a long ridge and in part on a till plain located at the base of the ridge on its eastern side. The till plain borders the short stream that provides the outlet of Lake Lonely into Kayaderosseras Creek near Saratoga Lake. The ridge overlooks Bear Swamp from the south and east and the till plain bordering the Kayaderosseras Creek delta from the north and west. The mapped soils (Table 1, Figure 3) reflect the formation of soil during the retreat of the Wisconsinan glacier. They are different till and lake plain soils, although they reportedly overlay folded bedrock in the lower elevation along Kaydeross Ave. East. Elevations range from about 210-280 feet above mean sea level. Water sources in the immediate vicinity include a small, seasonal stream that separates upper and lower portions of the ridge. The soils tend to be either silty loam or sandy loam overlying channery silty of clayey loam, except for Claverack loamy fine sand, which overlies clay. Shovel testing reported later supports this to a great extent, although rocks often were more rounded than channery, and gravel commonly occurred. Table 1: Soil Data(USDA 1992) Name(symbol) Soil Horizon Depth Color Texture Slope Drainage Landform cm(in) % Bernardston silt 0-25(0-10) br si lo Top of hills in 25-41(10-16) dk ye br channery lo Well drained glacially �BmB� 41-66(16-26) ye br channery l0 3-8 soil modified 66-183(26-72) ol br channery si lo uplands Bernardston silt 0-25(0-10) br si lo Sides of hills 25-41(10-16) dk ye br channery lo Well drained in glacially (BmC) 41-66(16-26) ye br channery l0 8-15 soil modified 66-183(26-72) ol br channery si lo uplands 1 Bernardston silt 0-25(0-10) br si lo Sides of hills loam 25-41(10-16) dk ye br channery l0 15-25 Well drained in glacially (BmD) 41-66(16-26) ye br channery lo soil modified 66-183(26-72) ol br channery si lo uplands Bernardston Bernardston Bernardston 0-25(0-10) br silo 25-41(10-16) dk ye br channery lo 41-66(16-26) ye br channery lo 66-183(26-72) ol br channery si lo Bernardston- Manlius Manlius Manlius Well drained Manlius-Nassau 0-13(0-5) dk br channery si lo Glacial till on complex, 13-46(5-18) br channery si l0 3-8 to somewhat folding undulating 46-53(18-21) br v channery si lo excessively bedrock (BnB) 53-61(21-24) ye br e�r. channery si lo drained Soft shale bedrock Soft shale bedrock Soft shale bedrock Nassau Nassau Nassau 0-8(0-3) v dk gy br channery si lo 8-46(3-18) ye br v channery si lo Soft shale bedrock Soft shale bedrock Soft shale bedrock 0-18(0-7) dk gy br si lo Broad flats Burdett silt loam 18-28(7-11) mott It ye br v fi sa lo Poorly and at the �BXB� 28-46(11-18) mott dk gy br si cl l0 3-8 drained base of hills 46-84(18-33) mott ol br channery cl lo on till plains 84-183(33-72) mott dk gy br channery si lo 0-20(0-8) v dk gy br lo fi sa Claverack 20-33(8-13) mott It ol br fi sa 33-53(13-21) mott br fi sa Moderately Old lake loamy fine sand 53-69(21-27) dk gy br sa 3-8 well drained plains (CIB) 69-79(27-31) mott gy br si lo 79-183(31-72) mott br si cl 0-23(0-9) v dk gy si lo 23-36(9-14) mott dk gy br si lo Base of 36-46(14-18) mott gy br si lo Ilion silt loam 46-81(18-32) mott gy br si cl l0 0-3 Poorly slopes and in (In) g1-102(32-40) mott dk gy br si cl lo drained depressions 102-127(40-50) mott dk gy br channery si cl lo on till plains 127-183(50-72) mott gy br channery si lo Key: v: very; extr: extremely; dk: dark; It: light; gy: gray; mott: mottled; br: brown; rd: red; ol: olive; ye: yellow; lo: loam; cl: clay; si: silt; sa: sand; grv: gravel The project area lies within the Oak-Northern Hardwood vegetation zone, which is dominated by oak, yellow birch, beech, elm, and some white pine and maple, with invading species like red cedar, white ash and hawthorn. These less common species usually reside on abandoned farmland or on north-facing slopes where there is less sun and therefore cooler temperatures (DeLaubenfels 1977). The Oak-Northern Hardwood zone is described primarily as a transition zone where oaks and the northern hardwood species alternate or intermingle. This suggests that the precontact forested landscape of the project parcel would have been covered primarily with beech and sugar maple, with considerable oak, as well as associated ash, basswood, cherry, birch and white pine. Much of the project APE has been cleared and contains a tall weedy mix of goldenrod, raspberries, and artemisia interwoven with grapes and other vines. 2 SITE FILE RESEARCH The archaeological site files of the New York State Museum (NYSM) and OPRHP, both maintained at OPRHP, were reviewed in order to identify whether archaeological resources have been reported previously within a one-mile radius of the project location. The list of previously recorded site is shown in Table 2. Table 2: Site Files Research NYSOPRHP Additional Site# Distance to Time Period Site Type National Site# Parcel m ft Re ister 09140.001437 High Rock 1495(4905) LA-EW Workshop/Camp Undetermined Prehistoric Site 09140.001470 Three Brothers 94(308) No info No info Undetermined Precontact Site 09140.001452 Arrowhead Rd- 801(2628) No info Camp Undetermined Vistas Locus 4 09140.001453 Arrowhead Rd- 886(2907) No info Camp Undetermined Vistas Locus 3 09140.001457 Vistas Locus 6 877 2877 No info Cam Undetermined 09140.000169 Arrowhead Casino 991(3251) No info No info Listed Site 09140.000170 The Lakeshore 1142(3747) No info No info Undetermined Area Site 09140.001458 Vistas Locus 7 865 2838 No info Cam Undetermined 09140.001459 Vistas Locus 8 933 3061 No info Cam Undetermined 09140.001456 Vistas Locus 5 1171 3842 No info Cam Undetermined 09140.001455 Vistas Locus 1218(3996) No info Camp Eligible 2/Rafters Site 09140.001496 The Kaydeross 1425(4675) No info Workshop??? Undetermined Park Site Locus 5 09140.000168 The Kaydeross 1512(4961) No info No info Undetermined Park Site Locus 1 09140.001454 Vistas Locus 1 1599 5246 No info Cam Eli ible 09140.001497 The Spencer Site 1447(4747) Carbon date Camp Undetermined of 480±80 B.P. (AD 1470±40 rs 09140.001603 South Parcel 4 Site 1185 3888 No info No info Undetermined 09140.001445 Crescent Ridge 1327(4354) No info ???? Eligible Prehistoric Site 09140.001600 South Parcel 1 Site 1142 3747 No info No info Undetermined 09140.001601 South Parcel 2 Site 1065 3494 No info No info Undetermined 09140.001602 South Parcel 3 Site 1078 3537 No info No info Undetermined 09140.001412 Prehistoric Site 1 1367(4485) Potentially No info Not Eligible Archaic 09140.001415 Prehistoric Site 4 1535 5036 No info Isolated find Not Eli ible 09140.001416 Prehistoric Site 5 1301 4268 No info Isolated find Not Eli ible 09140.001413 Prehistoric Site 2 1108(3635) Potentially No info Not Eligible Archaic 09140.001417 Ramsdill 1034(3392) Prior to 1856 Foundation and Undetermined Residence/Farm several Site outbuilding remains 09140.001418 Ramsdill 456(1496) Priorto 1856 Scattered wooded Undetermined Outbuildings Site timbers and altered original round contours 09140.001477 Saratoga Traction 109(358) 1918-1929 Some rails still Not Eligible Com an RR Site artiall visible NYSM 1309 1427 4682 No info No info 3 NYSOPRHP Additional Site# Distance to Time Period Site Type National Site# Parcel m ft Re ister NYSM 1305 868(2848) Late Archaic No info Kitchen Garden NYSM 1306 964(3163) LA:LAT:EW:- Camps Arrowhead II W NYSM 1307 978(3209) MA:LA:TR No info Arrowhead Casino NYSM 8514 No 976(3202) No info No info Info NYSM 2667 799(2621) LA?:TR?:NO Camp Cottonwood INFO? NYSM 9249 Site? 381 1250 No info No info NYSM 2674 700(2297) PH:HE? No info Kaydeross 2(Loci 1-3 NYSM 2674 561(1841) PH:HE? No info Kaydeross 2(Loci 1-3 NYSM 2672 920(3018) HE Dump Ka deross 1 NYSM 2674 454(1490) PH:HE? No info Kaydeross 2(Loci 1-3 NYSM 2673 396(1299) LW No info Ka deross 3 NYSM 4701 No 240(787) No info Village Info NYSM 6907 393 1289 No info Cam s NYSM 4699 0(Corner in PH Camps arcel NYSM 8457 175 246 MA:LA No info A large number of archaeological sites have been recorded previously in the search radius. These include 40 precontact period sites and 3 historic period sites, as listed in Table 2. Although in several cases no information was obtained regarding time period, it is otherwise known or reasonably assumed that these are precontact period sites. Although one site (NYSM 4699) is recorded within the development parcel, and several others (e.g., 09140.001470, 09140.001477, and NYSM 8457) are recorded close to the parcel, these sites are only near the boundary of the large parcel; they are not close at all to the APE. The closest previously recorded site to the APE is NYSM 4701, reported to be a precontact period village site. This site is depicted near Kaydeross Avenue East some 240 meters (787 feet) from the southern boundary of the APE. NATIONAL REGISTER OF HISTORIC PLACES Two sites listed in the National Register of Historic Places (NRHP)were identified in the search radius (Table 3). None are in or adjacent to the APE. The Arrowhead Casino site is a precontact period archaeological site also identified in Table 2. In addition the Union Avenue Historic District is some 1080 m (3251 ft) from the development parcel. Table 3: NRHP Sites within One Mile of the Pro�ect Site. NR# Description Address Distance m(ft) -------- Arrowhead Casino Site Confidential 991(3251) 90NR02598 Union Avenue Historic District Saratoga Springs, NY 1080(3543) 4 PREVIOUS ARCHAEOLOGICAL RESEARCH Numerous archaeological surveys conducted within approximately 1 mile of the project site have been identified. None of these have been conducted within or adjacent to this project's APE. The surveys conducted the vicinity include: AKRF, Inc. 2014 Phase IA Archaeological Survey, Saratoga Race Course Redevelopment Project, City of Saratoga Springs, Saratoga County, New York. Curtin Archaeoloqical Consultinq, Inc. 2015 Phase 1 Archaeological Survey, 5084 Nelson Avenue Extension, 3-Lot Subdivision, Town of Malta, Saratoga County, New York. 2015 Phase 1 Archaeological Survey, Proposed Residential Subdivision, Arrowhead and Kaydeross Park Roads, City of Saratoga Springs, Saratoga County, New York. 2017 Additional Phase 1 B Archaeological Survey, Archaeological Site Boundary Refinement East of the South Parcel 1 Site, and Phase 2 Archaeological Surveys of the South Parcel 2 and 3 Sites, Spencer Property, Kaydeross Park and Arrowhead Roads, City of Saratoga Springs, Saratoga County, New York. 2018 Revised Report: Additional Phase 1 B Archaeological Survey, Archaeological Site Boundary Refinement of the South Parcel 1 Site, and Phase 2 Archaeological Surveys of the South Parcel 2 and 3 Sites, Spencer Property, Kaydeross Park and Arrowhead Roads, City of Saratoga Springs, Saratoga County, New York. Greenhouse Consultants Incorporated 1999 Stage 1 B/2 Archaeological Survey, Crescent Avenue and Arrowhead Road, Saratoga Springs, Saratoga County, New York. 2000 Stage I Cultural Resource Survey of the Proposed Saratoga Farm Development, Town of Malta, Saratoga County, New York. 2001 Stage 1 B Archaeological Survey Zones 10 and 11 of the Woodlands, Saratoga Springs, Saratoga County, New York. Hartqen Archeoloqical Associates, Inc. 1999 Phase IA Archeological Sensitivity Assessment and Phase IB Archeological Field Investigation Revised, Proposed Fiber Optic Line 98PR3309, Albany to Glens Falls, Albany, Saratoga &Warren Counties, New York. 2000 Phase IA Literature Review and Archeological Sensitivity Assessment, City of Saratoga Springs, Long Term Water Source Development Study, Saratoga County, New York. 2001 Phase IA Report for Archeological Potential Sensitivity Assessment and Phase IB Archeological Field Investigation, SBA Saratoga Communications Facility, Crescent Avenue, Town of Saratoga, Saratoga County, New York. 2002 Phase IA Literature Review and Sensitivity Assessment and Phase IB Archeological Field Reconnaissance, Proposed SBA Saratoga Communications Facility II, Site No. 10155-044, Town of Saratoga, Saratoga County, New York. 5 Public Archaeoloqv Facilitv/SUNY Binqhamton 2009 Cultural Resource Reconnaissance Survey, OGS S4284, Saratoga Gaming and Raceway, City of Saratoga Springs, Saratoga County, New York. HISTORIC MAPS RESEARCH The following maps, ordered chronologically, were consulted to identify possible historic sites. Where possible, maps were georeferenced using GIS software. Historic map coverage is inclusive forthe years 1779 to 1949. These maps are presented as figures in this report in order to illustrate historic occupation and land use. Spatial distortions in the underlying historic maps may be apparent in comparison to the APE outline once georeferenced. Table 4 provides a summary. The abundance of structures/names identified is amplified due to distortion in the underlying maps. This issue is discussed in the next section. Table 4: Historic Ma s Map Date Reference Name/Other in/near APE 1779 A Chorographical Map of the Province of New York, Claude J. n/a Sauthier Fi ure 5 1829 Ma of the Count of Sarato a, David H. Burr Fi ure 6 n/a 1856 Map of Saratoga County, New York, Samuel Geil (Figure 7) L. Riley, W.M. Swarts, D. Davis 1876 Map of Saratoga and Ballston with surroundings, Beers J. Davis, W. Swart Fi ure 8 1879 Map of Saratoga Springs, Saratoga Co., NY, Cramer& Mott L. Riley, L. Abel, W. Abel, Fi ure 9 C. Whitford 1890 Ma of Sarato a Count , Lant and Silvernail Fi ure 10 One buildin 1902 Sarato a 15'minute USGS Quadran le Fi ure 11 One buildin 1942 Sarato a 15'minute USGS Quadran le Fi ure 12 One buildin 1949 Sarato a 15'minute USGS Quadran le Fi ure 13 One buildin MAP DOCUMENTED STRUCTURES The earliest map reviewed is the Sauthier 1779 map which was prepared for American military use during the Revolutionary War. It depicts the nexus of roads and Indian paths in the Saratoga Springs area, including Indian paths that merge near the south bank of Kayaderosseras Creek, and after crossing the creek, continue north as a single path routed between Saratoga Lake and Lake Lonely. This is in the vicinity of the project site. It isn't possible to compare this path further in relations to Kaydeross Avenue East or other nearby roads due to the scale and schematic nature of the map. The next map reviewed, the 1829 Burr atlas, also is schematic but it too shows a road passing north of Kayaderosseras Creek and continuing northeast between Lake Lonely (labeled "Owl Pond") and Saratoga Lake. The subsequent maps show structures in the vicinity, but until the 1942 USGS quad, most of these maps are so distorted they cannot be interpreted with precision. The middle to late 19th century maps show structures associated with names. The georeferenced maps often show the APE and parcel too far south; and on different maps it is shown too far west or east. This is due to distortion in the underlying maps. The 1879 Cramer and Mott map is the most accurate (least distorted) of these maps, and it is a fair conclusion that this map shows the L. Riley house and barn within the APE on the west side of the road. The spatial relationship between the house and barn is very similar to the extant structures in this vicinity. The positions of house sites and associated family names on the 1856 map suggests that the house at the project site also is shown on that map, where it is also is labelled L. Riley. It therefore appears that the house at the project site may have been in this location since the data were collected for the 1856 map (probably a little earlier than 1856). However, it is not possible to tell whether the house may have been moved a short distance to its current location between 1856 and 1879. This is 6 relevant because according to property owner Kenneth Scott, the house was moved to its present location from off-site. In any event, its presence in this location may not greatly predate 1856. At the same time, archaeological data tend to indicate that the house site within the APE was not occupied during the late 18th-early 19th centuries, as no artifacts from this period were found during the Phase 1 B portion of this survey. The artifacts are discussed I more detail later in this report. ARCHAEOLOGICAL SENSITIVITY The project APE is within a one mile radius in which a large number of archaeological sites have been reported previously (although none have been recorded previously within the APE). The ridge and much of the till plain are elevated above local streams, seasonal streams and wetlands. Soil drainage is variable, but some of it is well drained to moderately well-drained. These are conditions that are considered conducive to precontact period archaeological site occurrence. The APE therefore is considered sensitive for the occurrence of precontact period sites. The area around the house is considered sensitive for the occurrence of an historic period archaeological site dating to the late 19th century, and possibly predating 1856. PRIOR DISTURBANCE The APE has been little affected by prior disturbance. Prior disturbances include construction of the house, driveway (and possibly driving or parking areas now covered with lawn) and any leveling or landscaping that may have affected the lawn areas fronting the road. Agricultural activities such as plowing and orchard planting are not considered to be substantial disturbances precluding the need for shovel testing. PHASE 1A SUMMARY AND RECOMMENDATIONS A complete and comprehensive Phase 1A archaeological survey has been conducted. Portions of the project site have been disturbed, but these disturbances are limited in extent compared to the size of the survey area. The project APE is considered sensitive for the occurrence of precontact period archaeological sites, and in the area around the house a mid-late 19th century archeological site may occur. As a result of these findings, a Phase 1 B archaeological survey is warranted. PHASE 1 B ARCHAEOLOGICAL FIELD INVESTIGATION The Phase 1 B field survey was conducted during good weather from August 5- September 18, 2019 by the Principal Investigator and the Assistant Archaeologist. During fieldwork the weather was sunny and seasonably warm to hot. Transects 1-4 were deployed in the area east of Kaydeross Avenue East, while Transects 5-45 were set up on the terrace and ridge west of the road. The Phase 1 B field methodology was guided by Section 2.3 of the New York Archaeological Council Standards (NYAC 1994), as well as guidelines provided by the New York State Historic Preservation Office (SHPO 2005). Photographs (shown in Appendix B) were taken of the project APE to demonstrate current conditions and document evidence of prior disturbance. Following the completion of fieldwork, all field data were brought to the Curtin Archaeological office and lab for processing and analysis. 7 Survey Strategy The APE was shovel tested at a 15 m (50 ft) interval exclusive of steep slopes (>12-15% slope), standing water, and locations where the shovel test grid points fell on the house and garage. Gaps at the ends of transects were filled in with 7.5 m (25 ft) interval shovel pits (STPs). STPs were placed within 7.5 m (25 ft) of the house at Transects 35 and 45. The survey area is mostly open around the house and barn, wooded with thick underbrush east of the road, and variously wooded on the ridge west of the house and barn. The variously wooded conditions on the ridge included an old apple orchard that had become overgrown with underbrush, as well as open mixed pine hardwoods merging into areas where weedy and intrusive species such as honeysuckle and Asian bittersweet have taken over. There was much downed wood (often associated with Asian bittersweet infestation) in this thick underbrush. Machete-cut paths and agile climbing were needed to reach STP locations in these areas. Sighting compasses and tapes were used to align and measure the transects in coordination with wetland flags, the road and house, iron rods, and flagged boundaries located in the field. All soil was screened through '/ inch mesh hardware cloth. PHASE 1 B ARCHAEOLOGICAL SURVEY RESULTS A total of 306 STPs was set up, of which 301 were excavated along 45 transects (Table 5). All STPs are displayed on Figures 14 and 15. Figure 16 displays the phot angles. STPS that were not excavated (referred to as "no digs") were not excavated for the following reasons. One location fell on the house, one on the garage, and one on the pond. Two locations fell in an area thickly covered with 20th century refuse including concrete, large pieces of wood, and metal objects that formed a barrier over the surface. The shovel test pit records are presented in Appendix C. Table 5: Phase 1 B STP Summary STPs n= 7.5-15m 25-50 ft 306 Minus no di s 5 Total 301 Soil Stratigraphy East of the road the soil was rocky to very rocky and usually differentiated into an A horizon 15-25 cm thick composed of rocky silt, clay, or loam over a B horizon composed of light brown, yellow brown, or dark yellow brown soil of similar, although sometimes rockier composition. The A horizon appeared to be missing at STP 3/6. West of the road the terrace area between the ridge and the road, including the area around the house, barn, and pond, typically showed an A-B soil sequence in which the A horizon usually was about 20-30 cm thick. Soil texture often was rocky and included various mixtures of silt, clay, and loam, although clay predominated near the farm pond. A mixed zone indicating prior disturbance occurred in front of the house at STPs 45/2 and 45/3. An apparent historic period or modern sheet midden was found at STPs 35/3 and 35/4. The midden soil fully included or incorporated the A horizon. The midden was very dark brown gravelly silty loam 22-38 cm thick overlying a dark yellow brown similar gravelly B horizon. This midden thinned away from the house over an interval of 7.5 m (25 ft) to 22.5 m (75 ft) from the house. Artifact content will be discussed presently, although it is noted here that precontact period chert artifacts were found in the A horizon in the same STPs within the historic midden. Soil on the ridge was gravelly and rocky to very gravelly, with varying mixtures of loam, silt, sand and clay. The stratigraphy differentiates into an A-B sequence with the A horizon relatively thin in many cases, often ranging between 15-25 cm thick, or a little more or less in 8 some cases, but generally not more than 32 cm. The soil stratigraphy where precontact period artifacts were found is detailed below where the archaeological sites are discussed. Precontact Period Artifacts Precontact period artifacts were found at STPs 5/2, 23/1, 23/2, 28/8, 29/7, 34/2, 35/3 and 35/4. The precontact period artifact found include 1 quartzite flake, several chert flakes, one piece of fire cracked rock, and a chopper. These are distributed among 5 archaeological sites to be described further in this report. Historic Period Artifacts Historic period artifacts were found in several contexts, including a midden south of the 227 Kaydeross Avenue East house, anther locations at the front of the house, and at low density in dispersed locations within the APE. The midden STPs (35/3 and 35/4) as well as an STP between the house and the road are included within a historic period archaeological site identified for this report as the Kaydeross Ave.Historic Site. The dispersed locations where historic period artifacts were found do not appear to represent archaeological sites but rather represent small numbers of waste items often found widely distributed across landscapes. The historic period artifacts associated with the house are discussed later in a section on the historic period archaeological site. The dispersed items are described and enumerated here in Table 6. Table 6: Historic Artifacts Found in Non-Site Locations STP Number Artifacts Age Range if Evident 1/13 1 vessel glass 19 -early 20 century 2/11 1 wire fragment 12/7 1 cut nail 1805+ 15/3 1 vessel glass 26/7 1 flat glass 26/8 2 whiteware 1820+ 35/5 1 nail or rivet 37/1 5 flat glass 1 vessel glass 1 mortar fra ment 37/5 1 vessel glass 39/5 1 flat glass 1 wire nail ARCHAEOLOGICAL SITES Kaydeross Ave. 1 Precontact Site The Kaydeross Ave 1 Precontact Site is located south of the 227 Kaydeross Avenue East house. The setting described more broadly is the low terrace overlooking the Lake Lonely outlet creek. STPs 35/3 and 35/4 yielded a total of 3 chert flakes of varying lithic material including grey quartzite, translucent grey chert, and Normanskill chert. All are believed to be locally available material. Grey quartzite may be locally available among glacially transported stone, while Normanskill chert occurs in bedrock nearby in the Town of Easton. Translucent grey chert similar to the flake found here outcrops in High Rock Park, Saratoga Springs.. Although size varies among these flakes, they tend to be large (>1.5 cm). These flakes were mixed with historic artifacts in the midden deposit, and may have been displaced upward or downward, or even laterally due to house construction. The boundaries of the prehistoric site are interpolated at 25 ft (7.5 m) from the STP location. 9 Kaydeross Ave. Historic Site The Kaydeross Ave. Historic Site (with a presumed buffer) includes the area within 50 feet of the 227 Kaydeross Avenue East house including the extent to the road on the east, and a southern extension including the midden. These boundaries exclude STP 35/5, which appears to be an isolated artifact location, and STP 37/1 which based upon modern trash on the ground surface in this vicinity, appears to be part of a modern trash disposal area. The boundaries are drawn broadly enough to reasonably include the midden, artifact finds in proximity to the house, and a zone in which features such as privies and wells may occur. The house at 227 Kaydeross Avenue East reportedly was moved to the location where it is found now. The timing of this move is not known. A review of historic maps seems clear in placing the house in its current location by 1879. Earlier maps in this case are severely distorted as was revealed when they were georeferenced. However, consistencies along Kaydeross Avenue East seen in the 1856 and 1876 maps suggest that the house may have been present by 1856. The name L. Riley is associated with this property by 1879, and perhaps earlier. Artifacts recovered include a screw and a fragment of flat glass from STP 45/2 in front of the house, and numerous artifacts from the midden area, recovered in STPs 35/3 and 35/4. The midden deposit thinned away from the house and included the artifacts enumerated in Table 7. The artifact assemblage is varied, but numerically dominated by architectural items such as nails and flat (window) glass. Arms or recreational items including a shotgun shell and a fishhook are present, as are flowerpot fragments. Food-related artifacts are not very common, although they generally are relatively common in middens associated with houses. At this site they include a small amount of whiteware and probably at least some of the vessel glass. This assemblage has no artifacts (such as creamware, pearlware, or wrought nails) that would definitively be associated it with an early period of occupation during the late 18th or early 19th century. Artifacts that could have been used in the later part of that time-frame include the whiteware and cut nails, but these artifact classes are associated with long periods (approaching the present)when they could have been manufactured and used. Moreover, it is more likely that cut nails than wire nails would have been used in the late 19th century, although at this site wire nails are more common. Several of the items recovered, including the wire nails and a can fragment indicate that this midden was forming during a relatively late time-frame such as the late 19tn_20tn century. Table 7: Historic Artifacts Recovered from the Midden South of the House Context Artifacts A e Ran e STP 35/3, Stratum 1 1 vessel glass 1 vessel glass 1820-1930 (poss. 1890-1920) 2 cut nails 1805+ 4 cut nail fragments 1805+ 2 wire nails 1850-present 5 wire nail fragments 1850-present 1 can fragment 1898-present 3 nail fragments unidentifiable 1 clam shell 3 coal 1 brick fragment 2 flat glass 4 animal bone 1 shotgun shell 5 redware flower ot sherds STP 35/4, Stratum 1 2 whiteware 1820-present 1 cut nail 1805+ 2 cut nail fragments 1805+ 1 nail fragment unidentifiable 1 fishhook 10 Kaydeross Ave. 2 Precontact Site The Kaydeross Avenue 2 Precontact Site is located on the eastern part of the ridge overlooking the small seasonal stream. Artifacts including 2 relatively large flakes and a piece of fire cracked rock occurred in 2 consecutive STPs (23/1 and 23.2). The flakes are made of Normanskill and Snake Hill cherts; Snake Hill also is a locally available chert. The Normanskill chert flake has evidence of use-wear associated with cutting or scraping. Kaydeross Ave. 3 Precontact Site The Kaydeross Ave. 3 Precontact Site also include 2 consecutive STPs, 28/8 and 29/7. It is located on the lower part of the south-facing slope of the eastern part of the ridge. Three chert flakes were found including 2 relatively large flakes (>1.5 cm) made of Normanskill chert, and 1 small flake (0.5-1.0 cm) made of a black chert. While the flakes found at the other sites and at STP 29/7 were found in the A horizon, the flake from STP 28/8 was found in the B horizon (subsoil). Kaydeross Ave. 4 Precontact Site The Kaydeross Ave. 4 Precontact Site includes a single flake find at STP 34/2. It is on the lower slope of the east ridge in a southwest aspect overlooking the small seasonal stream. The flake found here is of inedium size (1.0-1.5 cm) and is made of Onondaga chert. Onondaga chert occurs south of the Mohawk River and west of the Hudson River. With respect to possibly more local availability of Onondaga chert, it could not have been glacially transported to the project site, and there is no alternative transport means other than human mobility. It is therefore somewhat more exotic than the other cherts identified in this survey. Since the Kaydeross Ave. 4 Precontact Site consisted of 1 flake found in one STP, it may represent an isolated find. However, this has not been explored further as avoiding impact at this site is planned. Kaydeross Ave. 5 Precontact Site The Kaydeross Ave. 5 Precontact Site includes a chopper or chopper-like artifact made of a heavy crystalline stone. It is bifacially thinned and shaped with no cortex remaining. The term "chopper" most often refers to a dismembering tool used in butchering game. Some so- called choppers are alternatively interpreted as digging tools. This particular artifact has a certain asymmetry involving opposite convex and straight sides that suggest that this may be tool may be an unpolished ulu (a.k.a. semi-lunar knife). An ulu with its convex edge could have had a slicing function or a chopping function with the ability to employ a rocking motion. Like the Kaydeross Ave. 4 Site, the evidence of Kaydeross Ave. 5 is limited to one artifact from one STP possibly representing an isolated find. However, confirmation an isolated find has not been attempted as avoidance is planned and additional investigation has not been conducted. PHASE 1 B ARCHAEOLOGICAL SURVEY SUMMARY AND RECOMMENDATIONS A complete and comprehensive Phase 1 B archaeological survey has been conducted. The Phase 1 B shovel testing program resulted in the excavation of 301 shovel test pits. Most of the project area did not contain artifacts, a result conducive to avoiding impact to archaeological sites. Six archaeological sites have been identified, all appear to be avoidable. Two of these, the Kaydeross Ave. 1 Precontact Site and the Kaydeross Ave. Historic Site overlap, with the precontact period site occurring inside of the historic site. The Kaydeross Avenue 2-5 Precontact Sites are dispersed across the ridge west of Kaydeross Avenue East, generally on downslopes with southern or southwestern aspects, except for Site 2 which overlooks a small creek and has a northeast aspect. It is recommended that the archaeological sites should be avoided by construction. The Kaydeross Ave. Precontact 2-5 Sites should be avoided by creating 25 foot (7.5 meter) buffers around the artifact find spots, excluding any area owned by neighbors (since some of these occur adjacent to property lines). The area to be avoided around the Kaydeross Ave. Precontact 1 Site 11 and the Kaydeross Ave. Historic Site is broader, taking into consideration the location of the precontact period artifacts,the historic period midden,the house and otherwise a distance of 50 feet from the house or the distance to the road. The avoidance recommendation concerning the archaeological components at the Kaydeross Ave. Precontact 1 Site and the Kaydeross Ave. Historic Site includes ground-disturbing activities but should not include repair, maintenance or minor or modifications to the exterior of the house. If plans to avoid the archaeological sites change, potential disturbances of the archaeological sites would require further consultation with SHPO. If avoidance is unfeasible, a Phase 2 archaeological survey is warranted. REFERENCES CITED De Laubenfels, David J. 1977 Vegetation. In Geography of New York State, John H. Thompson, editor. Syracuse University Press, New York. New York Archaeological Council (NYAC) 1994 Standards for Cultural Resource Investigations and the Curation of Archaeological Collections in New York State. http://nyarchaeology.org/assests/standards/ NYACStandards.pdf. New York State Office of Parks, Recreation and Historic Preservation (SHPO) 2005 Phase I Archaeological Report Format Requirements. http://nysparks.com/shpo/ environmental-review/documents/PhaselReportStandards.pdf United States Department of Agriculture (USDA) 1992 Soil Survey of Saratoga County, New York. 12 Appendix H Deep Ripping and De-compaction (DEC, 2008) C7 � � �. ■� � o � � � �z � � � � �� � � � �y � � 1 z�' � � O �3 � � � � � � '�� • �+ �� � � � � � � �' � �• � � � ^ � Z � � � � � o �• �'Q y � 0 � t�-� � � � z � � � � �• � t.� y o '""' ao Z z:yro C7 0 � � a-� c �o �` � t" � r.`�o w o � � rn 'ti � �� � � � °° -�r o rn �' dy a. c � <.=� � w �D o�� � � w � � °n o. � m �'°q < � �.�. c � :j� � '�. o n c� o r. � o�� � � � �. � o.rn C7 � < ° � �. 0 0 � � � � o' rn � � a a � � o a� o vo � y � � � 7i L . w o rn � rn � rn �+,'� �, o '+,w c+ rn rn � .. °.�s' � ° o w w ,� � � '� � rn o ,� °' w ,��° w n o.� �o �w��� tn � °q r. .� • ' �d`. �o rn �,� rn � � w .� . 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