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HomeMy WebLinkAbout20171240 Henry St Condos SWPPP (2) ILCm1 40 Long Alley p- •518-587-8100 The LA GROUP Saratoga Springs 1518-587-0180 NY 12866 wwmthelagroup.com Landscape Architecture'a Engineering P.C. Stormwater Pollution Prevention Plan for: Henry Street Condominiums Owner/Operator(s): Robert Bucher 18 Computer Drive E, Ste 103 Albany, NY 12205 518-426-8880 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: December 11, 2017 Revised August 15, 2019 Table of Contents 1.0 PERMIT OVERVIEW AND REQUIREMENTS 1 1.1 PERMIT OVERVIEW 1 2.0 SWPPP REVIEW,UPDATE 1 2.1 SWPPP REVIEW 1 2.2 SWPPP UPDATE 1 3.0 SITE ASSESSMENT, EVALUATION AND PLANNING 2 3.1 PROJECT LOCATION 2 3.2 PRE-DEVELOPMENT CONDITIONS 2 3.3 PROJECT SCOPE 2 3.4 RECEIVING WATERS 2 3.5 HISTORIC PRESERVATION DETERMINATION/ENVIRONMENTAL IMPACT 2 3.6 SOILS 2 4.0 EROSION AND SEDIMENT CONTROL 3 4.1 EROSION AND SEDIMENT CONTROL PRACTICES 3 4.2 EROSION AND SEDIMENT CONTROL DRAWINGS 3 4.3 CONSTRUCTION SEQUENCE OF OPERATIONS 3 4.4 EROSION AND SEDIMENT CONTROL PRACTICE MAINTENANCE 4 4.5 EROSION AND SEDIMENT CONTROL INSPECTION 5 4.6 CONTRACTOR SEQUENCE FORM 6 5.0 POST CONSTRUCTION STORMWATER MANAGEMENT PRACTICES 6 5.1 STORMWATER MANAGEMENT CONTROLS 6 5.2 POST CONSTRUCTION STORMWATER MANAGEMENT DRAWINGS 6 5.3 HYDRAULIC AND HYDROLOGIC ANALYSIS 6 5.4 COMPARISON OF PRE AND POST CONSTRUCTION STORMWATER RUNOFF 7 5.5 WATER QUALITY VOLUME 7 5.6 CHANNEL PROTECTION VOLUME 8 5.7 RUNOFF REDUCTION VOLUME 8 6.0 POST CONSTRUCTION STORMWATER MAINTENANCE 8 6.1 MECHANISM OF OPERATION AND MAINTENANCE 8 6.2 MAINTENANCE TO BE PERFORMED 8 7.0 CONSTRUCTION WASTE 9 8.0 TEMPORARY STABILIZATION FOR FROZEN CONDITIONS 9 9.0 SPILL PREVENTION PRACTICES 10 10.0 CERTIFICATIONS 14 11.0 DEFINITIONS 19 Appendices A HydroCAD Calculations and Storm Data B Soil Survey and Map Set— Location Map, Site Preparation and Demolition, Grading and Utility Plan C SWPPP Inspection Forms —SWPPP Inspection Report D Other SWPPP Forms — Construction Sequence, SWPPP Plan Changes, Spill Response Form, Stormwater Management Practice Maintenance Log E Historical Documentation/ Environmental Resource Map Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 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 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 SWPPP, ✓ All inspection reports. 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 Grading and Utility Plan included in Appendix B. 2.0 SWPPP REVIEW, UPDATE 2.1 SWPPP Review The City of Saratoga Springs requires preparation of a SWPPP for non-residential activities disturbing 0.1 acres or more. The project is proposed to disturb 0.85 acres. Project review will be conducted by the City of Saratoga Springs. 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 or owner that will implement any part of the SWPPP. If modifications are required to the post-stormwater management practices the City of Saratoga Springs must be notified in writing of any planned amendments or modifications to the post-construction stormwater management practice component of the SWPPP. The LA GROUP Landscape Architecture it Engineering p[. Page Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 3.0 SITE ASSESSMENT, EVALUATION AND PLANNING 3.1 Project Location The project is located at 128 Henry Street in the City of Saratoga Springs, Saratoga County, NY 12866. See Appendix B for a general site location map. 3.2 Pre-Development Conditions The project site is located adjacent to the intersection of York Street and Henry Street, on the east side of Henry Street. The project includes creating a new 0.47 acre parcel. The proposed parcel is a vacant lot. Stormwater runoff from the existing lot sheet flows to a low spot within the lot, where it is capture by a catch basin. This structure conveys flow to the municipal storm sewer at the street. 3.3 Project Scope The project includes construction of a new building and associated parking. The Project will disturb approximately +/-0.85 acres. 3.4 Receiving Waters The site discharges to the municipal storm sewer along Henry Street, which flows west to the box culverts under High Rock Avenue. 3.5 Historic Preservation Determination/Environmental Impact The project is not anticipated to disturb any historical or cultural resources nor will it impact any significant natural communities. Maps of the location and nearby historical and natural resources are included in Appendix E. 3.6 Soils The USDA/NRCS soil survey map for this site shows Deerfield loamy fine sand, and Windsor loamy sand mapped in the project vicinity. These soils are classified in the hydrologic soil group (HSG) 'A'. Soil information can be found in Appendix B. The LA GROUP Landscape Architecture it Engineering p[. Page 2 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 4.0 EROSION AND SEDIMENT CONTROL 4.1 Erosion and Sediment Control Practices Temporary Structural Practices ✓ Silt Fence ✓ Dust Control ✓ Construction Entrance ✓ Inlet Protection Permanent Structural Controls ✓ Asphalt pavement/concrete walks ✓ Lawn/landscaping Temporary Stabilization Practices (including vegetative practices) ✓ Seed and mulch bare soil areas within 14 days of disturbance unless construction will resume in that area within 21 days. 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 B for detailed information on each practice. 4.2 Erosion and Sediment Control Drawings Erosion and Sediment Control practices are shown on the Construction Drawings included in Appendix B. 4.3 Construction Sequence of Operations ✓ Temporary structural erosion controls will be installed prior to earthwork as per the attached plans. ✓ 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 Inspector. The LA GROUP Landscape Architecture it Engineering p[. Page 3 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 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 practices and timing of installation. Install silt fence and inlet protection prior to any site disturbance. Maintain erosion control measures for duration Week 1 of site disturbances. Begin building construction Week 2-20 Begin utility installation Week 3-5 Complete sidewalk improvements and associated Week 10-11 streetscape Fine grade, landscape, seed and mulch After completion of building Remove erosion and sediment control measures upon At completion stabilization of contributing areas. 80%Germination 4.4 Erosion and Sediment Control Practice Maintenance Temporary erosion and sediment control practices will need to be maintained frequently during construction. It is the responsibility of the operator to inspect, and maintain the temporary controls so that they are working efficiently. The operator needs to pay close attention to SWPPP Inspection Reports that will advise of needed maintenance. Captured sediment will have to be removed periodically from each practice in order for the control to function properly. Temporary erosion and sediment control practice maintenance needs are listed below: ✓ Silt fence — maintenance shall be performed as needed and material removed when "bulges" develop in the silt fence. ✓ Storm drain inlet protection — inspect after each storm event. Remove sediment when 50 percent of the storage volume is achieved. ✓ 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. ✓ Replace top-soil, mulch and seed where seeding has been disturbed. The LA GROUP Landscape Architecture ill Engineering P Page 4 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 4.5 Erosion and Sediment Control Inspection • 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 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 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 C. 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 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. The LA GROUP Landscape Architecture it Engineering P Page 5 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 4.6 Contractor Sequence Form The operator shall prepare a summary of construction status using the Construction Sequence Form (included in Appendix D) 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 project is proposing the use of a green roof to treat stormwater runoff prior to discharge off-site. The capacity of the green roof has been sized to treat the entire required water quality volume for the site. The project includes streetscape improvements along Henry Street. Improvements include new curbing and sidewalk. The proposed sidewalk improvements are required as part of a separate approved subdivision for the parcel. Per NYSDEC General Permit, Table 1, sidewalk construction projects require only the preparation of a SWPPP that includes erosion and sediment controls. Post-construction stormwater practices (green roof) are provided for the proposed building and drive improvements approved as part of the site plan application, as required by the NYSDEC General Permit. 5.2 Post Construction Stormwater Management Drawings Post construction stormwater management controls are shown on the Construction Drawings included in Appendix B. 5.3 Hydraulic and Hydrologic Analysis The program utilized for quantifying stormwater runoff rates and volumes was HydroCAD software, produced by Applied Microcomputer Systems of Chocorua, NH. The SCS 24-hour Type II design storms for 1, 10, and 100-year frequency rainfall were analyzed (Appendix A). ✓ Hydrologic/hydraulic analysis for all structural components of the stormwater control system for the applicable design storms. ✓ Comparison of post-development stormwater runoff conditions with pre- development conditions. ✓ Dimensions, material specifications and installation details for each post- construction stormwater control practice. The LA GROUP Landscape Architecture it Engineering p[. Page 6 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 5.4 Comparison of Pre and Post Construction Stormwater Runoff Stormwater Quantity. These calculations are based on the HydroCAD analysis. 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. Under pre-development conditions a portion of the site drains to an existing on- site catch basin. The catch basin collects and conveys stormwater to the existing closed drainage system in Henry Street. The remaining portion of the site sheet flows to Henry Street. Post-development stormwater will continue to be conveyed to the Henry Street closed drainage system. The proposed green roof will detain and restrict the flow rate. The flow rate for the green roof material is 44.5 gallons per minute, or 0.1 cfs. See Appendix A for design outline from the Green Roof supplier/designer. Pre-Development Post-Development 10 year, 24 hour storm (Qp) 1.05 CFS 1.04 CFS 100 year, 24 hour storm (Qf) 1.95 CFS 1.72 CFS 5.5 Water Quality Volume The following formula 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(1) where I is impervious cover in percent A = Subcatchment area in acres Water quality volume (WQv) at the site will be managed through a green roof. The required WQv for the site is 0.036 ac-ft, the green roof will provide WQv for the site, 0.12 ac-ft. The provided WQv was determined via the volume capacity of the green roof, which consists of several permeable layers of varying retention capacities. For information on the layers of the roof described here in, please see Appendix A. The LA GROUP Landscape Architecture it Engineering P Page 7 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 The volume considered in the water quality volume are the retention/detention capacity of the green roof and paver areas. The total retention/detention volume is 0.12 ac-ft, based on the proposed Purple-Roof system (see Appendix A for memo). Table 5-1 Water Quality Volume (WQv) Summary SMP Type Provided (ac-ft) SMP1 Green Roof 0.12 Total 0.12 5.6 Channel Protection Volume The required Channel Protection Volume (CPv) was calculated to be 1,110 cf. This value is reduced via green infrastructure (green roof) by 5,294 cf. The required CPv is therefore completely reduce via green infrastructure. 5.7 Runoff Reduction Volume Runoff Reduction will be achieved through the green roof. The provided runoff reduction volume, 0.12 ac-ft, is greater than the water quality volume, 0.036 ac-ft. 6.0 POST CONSTRUCTION STORMWATER MAINTENANCE 6.1 Mechanism of Operation and Maintenance Robert Bucher will be responsible for the long term operation and maintenance of the stormwater management practices for the life of the site. 6.2 Maintenance to be Performed Post-construction maintenance for this project will consist of regular inspections of permanent stormwater management facilities. These maintenance procedures are essential to ensure continual performance of the stormwater management practices on the 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 C) to record that it was done. 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. The LA GROUP Landscape Architecture ill Engineering p[. Page 8 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 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. Green Roof • Vegetation shall be monitored for establishment and viability. Replant as necessary. • During first year after planting vegetation shall be irrigated and fertilized as necessary to promote establishment. • Roof drains shall be inspected and cleared of debris regularly. • Semiannually green roof shall be weeded of invasive species and membrane shall be inspected for leaking. • Clean trash and debris from surface as necessary. 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 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 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 supersede 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 1st 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 The LA GROUP Landscape Architecture ill Engineering p[. Page 9 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 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. • 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. 9.0 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. The LA GROUP Landscape Architecture it Engineering P Page 10 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 ■ 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 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. The LA GROUP Landscape,.tutecture ill Engineering P Page 11 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 • 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. • 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: The LA GROUP Landscape Architecture it Engineering P Page 12 Stormwater Pollution Prevention Plan 10.0 CERTIFICATIONS Henry Street Condominiums The LA Group Project Number -2017017 Preparer Certification of Compliance with Federal, State, and Local Regulations This Stormwater Pollution Prevention Plan was prepared in accordance with the City of Saratoga Springs regulations. Name: Signature: Douglas Heller Title: Professional Engineer Company Name: The LA Group, PC Owner Pollution Prevention Plan Certification Date: 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 SWPPP requires site inspections be conducted by a qualified professional once every seven (7) days. These inspections shall be performed by a qualified professional as defined in the SWPPP. The Owner/Operator will be held financially responsible for any and all fines related to work tasks that are not specified by the Contractors)/Subcontractor(s) below. Name: Signature: Company Name: Lcm) The LA GROUP Landscape Architecture & Engineering P C. Title: Date: Page 14 Stormwater Pollution Prevention Plan Contractor and Subcontractor Certification Henry Street Condominiums The LA Group Project Number -2017017 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 storm water 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 15 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 15 Stormwater Pollution Prevention Plan Contractor and Subcontractor Certification Henry Street Condominiums The LA Group Project Number -2017017 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 storm water 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 16 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 16 Stormwater Pollution Prevention Plan Contractor and Subcontractor Certification Henry Street Condominiums The LA Group Project Number -2017017 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 storm water 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 17 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 17 Stormwater Pollution Prevention Plan Contractor and Subcontractor Certification Henry Street Condominiums The LA Group Project Number -2017017 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 storm water 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 18 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 Lcm) The LA GROUP Landscape Architecture & Engineering P C. Page 18 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number -2017017 11.0 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. LCM1 The LA GROUP Landscape Architecture & Engineering P C. Page 19 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number -2017017 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 completed. Qualified Inspector - 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. 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.) Lcml The LA GROUP Landscape Architecture & Engineering P C. Page 20 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number -2017017 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 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. LCM1 The LA GROUP Landscape Architecture & Engineering P C. Page 21 Appendix A HydroCAD Calculations and Storm Data HYDROCAD CALCULATIONS PRE DEVELOPMENT The LA GROUP Landscape A,,hil,,t... ft Elgilealffig PC P-0- P.7".. P&- 40 Long Alley P 518-587-8100 Saratoga Springs 587-0180 document 1, , violation �f S 7209 f th, N- Y.,k St— Education L- 0 the LA Group 2017 Robert Bucher 18 Computer Drive East Suite 103 Albany, NY 12205 LANDS N/F THOMAS G. & SANDRA L MC TYGUE L1365, P,766 TMR1165.52-3-1 LANDS N/F JB ENTERPRISE CORP, 1210, P 785 Ar TM#16 5,52-1 – 70 of LANDS N/F TERENCE & ANNE P. DICCORY L1041, P,320 AV it TM#1 65,52-3-3 /Z AV It Henry Street LANDS N/F Condominiums T CASEY A TINNISWOOD 'A"A, T, INSTR #2012023734 T, 7M#165 52-3-4 128 Henry Street Al TF– 273,0 Saratoga Springs, NY 128, ' EL S A' IN�270 0 `q, LANDS N/F INV 2 9�■ BRIAN A. STRAUGHTER ssz INSTP,#2008037696 TM #16 5 L/ -ANDS N/F z CONDOMINIUMS, LLC 0 R#2007036598 LANDS N/F #165,52-5-102 INGEBORG E. LUSE 5 / �2 / / / ♦ L724, P,50 /_ TM/J165.52-3-32 LR 0 woo LANDS N/F 1 STORY BRIAN P ICHRIATOFFERSON METAL // / / / S�pS / BUILDING 713, P,16 AR, 120 HENRY STREET TMW165,52-3-8 LEGEND MENNEN SUBCATCHMENT BOUNDARY SUBCATCHMENT ID TIME OF CONCENTRATION PATH AP -1 ANA11113 POINT Drawing TLe Pre -Development Watershed Map GRAPHIC SCALE 20 I inch = 20 feet W-1 Subcat r0000� A �1 1-0 AP- 1 Subcat Subcat Reach Z4o n Link Routing Diagram for Pre Development Prepared by The LA Group, Printed 8/15/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Pre Development Prepared by The LA Group Printed 8/15/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (sq -ft) (subcatchment-numbers) 281021 39 >75% Grass cover, Good, HSG A (1, 2) 81830 98 Paved parking, HSG A (1, 2) Pre Development Prepared by The LA Group Printed 8/15/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (sq -ft) Group Numbers 361851 HSG A 112 0 HSG B 0 HSG C 0 HSG D 0 Other Pre Development Prepared by The LA Group Printed 8/15/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG -A HSG -B HSG -C HSG -D Other Total Ground Sub (sq -ft) (sq -ft) (sq -ft) (sq -ft) (sq -ft) (sq -ft) Cover N u n 281021 0 0 0 0 281021 >75% Grass cover, Good 81830 0 0 0 0 81830 Paved parking Pre Development Type 11 24 -hr 1 -yr Rainfall=2.15" Prepared by The LA Group Printed 8/15/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 5 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR -20 method, UH=SCS, Weighted -Q Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=26,576 sf 24.60% Impervious Runoff Depth>0.47" Tc=6.0 min CN=WQ Runoff=0.44 cfs 1,047 cf Subcatchment2: Subcat 2 Runoff Area=10,274 sf 22.31% Impervious Runoff Depth>0.43" Tc=6.0 min CN=WQ Runoff=0.15 cfs 367 cf Link AP -1: AP -1 Inflow=0.59 cfs 1,414 cf Primary=0.59 cfs 1,414 cf Pre Development Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 8/15/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 1 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR -20 method, UH=SCS, Weighted -Q Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment1: Subcat 1 Runoff Area=26,576 sf 24.60% Impervious Runoff Depth>1.84" Tc=6.0 min C N =WQ Runoff=1.44 cfs 4,085 cf Subcatchment2: Subcat 2 Runoff Area=10,274 sf 22.31% Impervious Runoff Depth>1.72" Tc=6.0 min CN=WQ Runoff=0.51 cfs 1,472 cf Link AP -1: AP -1 Inflow=1.95 cfs 5,558 cf Primary=1.95 cfs 5,558 cf Pre Development Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 8/15/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 1: Subcat 1 Runoff = 1.44 cfs @ 11.98 hrs, Volume= 4,085 cf, Depth> 1.84" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 20,038 39 >75% Grass cover, Good, HSG A 61538 98 Paved parking, HSG A 26576 Weighted Average 20,038 75.40% Pervious Area 61538 24.60% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 2: Subcat 2 Runoff = 0.51 cfs @ 11.98 hrs, Volume= 1,472 cf, Depth> 1.72" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 71982 39 >75% Grass cover, Good, HSG A 21292 98 Paved parking, HSG A 101274 Weighted Average 71982 77.69% Pervious Area 21292 22.31 % Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Link AP -1: AP -1 Inflow Area = 36,851 sf, 23.96% Impervious, Inflow Depth > 1.81 " for 100 -yr event nflow = 1.95 cfs @ 11.98 hrs, Volume= 5,558 cf Primary = 1.95 cfs @ 11.98 hrs, Volume= 5,558 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs HYDROCAD CALCULATIONS POST DEVELOPMENT 4 -,- LANDS N/F THOMAS C. & SANDRA L. T McTYGUE 1365 P,786 TM 165'52-3-1 ♦% LANDS N/F I JB ENTERPRISE CORP. P L1210, P.785 7M#165,52 1 70 49F LANDS N/F % — — — — - — — TEPENCE & ANNE P DIGGOPY L 1041, P.320 ) TM#16552-3-3 LED" LANDS ANDS N/F CASEY A. TENNISWOOD INSTR,#2012023734 'Al 4�' TM#1 65,52- 3- 4 e\40 4 4# zs S 2/ A % A ti 401 1 INV -270 0 % If 4��' 44P I 64,' ♦% % LANDS N/F /L ♦BRIAN A. STRAUGHTER IIINV 7 % 4�/ INSTR,#2008037696 B, % TM#I 65.52-3-5 % Z—� ♦ % 411 ee % 4 -J"o .0 S, LLC 4# 8 LANDS N/F /A I 44P INGEBORG E, LUSE ;21`50 332 % / / / / LANDS N/F BRIAN P. CHRISTOFFERSON L1713, P_16 TM#165 52-3-8 LEGEND SUBCATCHMENT ID TIME OF CONCENTRATION PATH AP -1 ANALYSIS POINT SMP STORMINATER MANAGEMENT PRACTICE GRAPHIC SCALE I i-1 = 2() feet �a- The LA GROUP Landscape Architect... ft Elgi—Iffig PC P -.-f- P.7".. P&- 40 Long Alley r 518-587-8100 Robert Bucher 18 Computer Drive East Suite 103 Albany, NY 12205 Henry Street Condominiums 128 Henry Street Saratoga Springs, NY 12866 Jrak KLT Chkd DPH -2 12/8/2017 S,,I� 1 -20 leu D -,,pt- D- 1 -00C.-- 8/15/19 --US L-LJeVeIUP111e11 L Watershed Map W-2 2 It ) Subcat 2 AP- 1 SMP -10 �) Z 1 AP -1 Green Roof Subcat 1 Subcat 3 Subcat Reach Aon Link Routing Diagram for Post Development _DBH Prepared by The LA Group, Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Post Development—D131-1 Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (sq -ft) (subcatchment-numbers) 161858 39 >75% Grass cover, Good, HSG A (1, 21 3) 181371 98 Paved parking, HSG A (1, 2, 3) 35,229 70 TOTAL AREA Post Development—D131-1 Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (sq -ft) Group Numbers 351229 HSG A 1, 2, 3 0 HSG B 0 HSG C 0 HSG D 0 Other 35,229 TOTAL AREA Post Development—D131-1 Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG -A HSG -B HSG -C HSG -D Other Total Ground Sub (sq -ft) (sq -ft) (sq -ft) (sq -ft) (sq -ft) (sq -ft) Cover N u n 161858 0 0 0 0 161858 >75% Grass cover, Good 181371 0 0 0 0 181371 Paved parking 35,229 0 0 0 0 35,229 TOTAL AREA Post Development_DBH Type 11 24 -hr 1 -yr Rainfall=2.15" Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 5 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR -20 method, UH=SCS, Weighted -Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment1: Subcat 1 Runoff Area=18,314 sf 56.85% Impervious Runoff Depth>1.09" Tc=6.0 min CN=WQ Runoff=0.70 cfs 1,667 cf Subcatchment2: Subcat 2 Runoff Area=7,526 sf 23.25% Impervious Runoff Depth>0.45" Tc=6.0 min CN=WQ Runoff=0.12 cfs 280 cf Subcatchment3: Subcat 3 Runoff Area=9,389 sf 66.15% Impervious Runoff Depth>1.27" Tc=6.0 min CN=WQ Runoff=0.42 cfs 994 cf Pond SMP -1: Green Roof Peak Elev=0.05' Storage=501 cf Inflow=0.70 cfs 1,667 cf Outflow=0.10 cfs 1,671 cf Link AP -1: AP -1 Inflow=0.63 cfs 2,946 cf Primary=0.63 cfs 2,946 cf Total Runoff Area = 35,229 sf Runoff Volume = 2,942 cf Average Runoff Depth = 1.00" 47.85% Pervious = 16,858 sf 52.15% Impervious = 18,371 sf Post Development_DBH Type 11 24 -hr 10 -yr Rainfall=3.75" Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 6 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR -20 method, UH=SCS, Weighted -Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=18,314 sf 56.85% Impervious Runoff Depth>2.01" Tc=6.0 min C N =WQ Runoff=1.24 cfs 3,063 cf Subcatchment2: Subcat 2 Runoff Area=7,526 sf 23.25% Impervious Runoff Depth>0.83" Tc=6.0 min CN=WQ Runoff=0.21 cfs 524 cf Subcatchment3: Subcat 3 Runoff Area=9,389 sf 66.15% Impervious Runoff Depth>2.33" Tc=6.0 min C N =WQ Runoff=0.74 cfs 1,824 cf Pond SMP -1: Green Roof Peak Elev=0.10' Storage=1,097 cf Inflow=1.24 cfs 3,063 cf Outflow=0.10 cfs 3,068 cf Link AP -1: AP -1 Inflow=1.04 cfs 5,416 cf Primary=1.04 cfs 5,416 cf Total Runoff Area = 35,229 sf Runoff Volume = 5,411 cf Average Runoff Depth = 1.84" 47.85% Pervious = 16,858 sf 52.15% Impervious = 18,371 sf Post Development_DBH Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 1 Time span=0.00-24.00 hrs, dt=0.05 hrs, 481 points Runoff by SCS TR -20 method, UH=SCS, Weighted -Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=18,314 sf 56.85% Impervious Runoff Depth>3.60" Tc=6.0 min CN=WQ Runoff=2.10 cfs 5,499 cf Subcatchment2: Subcat 2 Runoff Area=7,526 sf 23.25% Impervious Runoff Depth>1.77" Tc=6.0 min CN=WQ Runoff=0.39 cfs 1,111 cf Subcatchment3: Subcat 3 Runoff Area=9,389 sf 66.15% Impervious Runoff Depth>4.11" Tc=6.0 min C N =WQ Runoff=1.24 cfs 3,216 cf Pond SMP -1: Green Roof Peak Elev=0.21' Storage=2,260 cf Inflow=2.10 cfs 5,499 cf Outflow=0.10 cfs 5,499 cf Link AP -1: AP -1 Inflow=1.72 cfs 9,826 cf Primary=1.72 cfs 9,826 cf Total Runoff Area = 35,229 sf Runoff Volume = 9,826 cf Average Runoff Depth = 3.35" 47.85% Pervious = 16,858 sf 52.15% Impervious = 18,371 sf Post Development_DBH Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 1: Subcat 1 Runoff = 2.10 cfs @ 11.97 hrs, Volume= 5,499 cf, Depth> 3.60" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sfl CN Description 71903 39 >75% Grass cover, Good, HSG A 10)411 98 Paved parking, HSG A 18,314 Weighted Average 71903 43.15% Pervious Area 10,411 56.85% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 2: Subcat 2 Runoff = 0.39 cfs @ 11.98 hrs, Volume= 11111 cf, Depth> 1.77" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sfl CN Description 51777 39 >75% Grass cover, Good, HSG A 11750 98 Paved parking, HSG A 71526 Weighted Average 51777 76.75% Pervious Area 11750 23.25% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3: Subcat 3 Runoff = 1.24 cfs @ 11.96 hrs, Volume= 3,216 cf, Depth> 4.11" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sfl CN Description 31178 39 >75% Grass cover, Good, HSG A 61210 98 Paved parking, HSG A 91389 Weighted Average 31178 33.85% Pervious Area 61210 66.15% Impervious Area Post Development_DBH Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 8/16/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 3 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Pond SMP -1: Green Roof Inflow Area = 18,314 sf, 56.85% Impervious, Inflow Depth > 3.60" for 100 -yr event Inflow = 2.10 cfs @ 11.97 hrs, Volume= 5,499 cf Outflow = 0.10 cfs @ 11.65 hrs, Volume= 5,499 cf, Atten= 95%, Lag= 0.0 min Primary = 0.10 cfs @ 11.65 hrs, Volume= 5,499 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Peak Elev= 0.21' @ 13.18 hrs Surf.Area= 0 sf Storage= 2,260 cf Plug -Flow detention time= (not calculated: outflow precedes inflow) Center -of -Mass det. time= 172.6 min (925.3 - 752.7 ) Volume Invert Avail.Storage Storage Description #1 0.00' 5,294 cf Custom Stage DataListed below Elevation Cum.Store (feet) (cubic -feet) 0.00 0 0.50 51294 Device Routing Invert Outlet Devices #1 Primary 0.00' 0.100 cfs Constant Flow/Skimmer Primary OutFlow Max=0.10 cfs @ 11.65 hrs HW=0.01' TW=0.00' (Dynamic Tailwater) Ll =Constant Flow/Skimmer (Constant Controls 0.10 cfs) Summary for Link AP -1: AP -1 Inflow Area = 35,229 sf, 52.15% Impervious, Inflow Depth > 3.35" for 100 -yr event nflow = 1.72 cfs @ 11.97 hrs, Volume= 9,826 cf Primary = 1.72 cfs @ 11.97 hrs, Volume= 9,826 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs Stormwater Practice Sizing Job Name and # Henry Street Water Quality Volume Calculation 6/24/2019 WQv = [(P)(Rv)(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 New Impervious % Impervious 100.00% Rv 0.95 90% Rainfall 1.15 Area in Square Feet 17444 * *Includes green roof area as impervious. WQv Required = 1588 ftZ) 0.036 ac-ft Job Name Channel Protection Volume Calculation 12/6/2017 Predevelopment Step 1: Determine Qu P = 2.15 in. (1 -yr. storm) Area = 0.85 acres CN = 53 Ia = 1.774 Henry Street Condominiums Ia/P = 0.82 Tc = 0.15 Hrs. Using Figure 4 -II, TR -55 and Tc, determine Qu (csm/in) IQU = 200 csm/in Step 2: Determine Qo/Qi Using Figure B-1, DEC Manual Appendix Bfor T = 24 hrs. and Qu, determine Qo/Qi QO/Qi = 0.08 Sten 3: Determine Vs/Vr IVs/Vr = 0.682 - 1.43(Qo/Qi) + 1.64 (Qo/Qi)'2 - 0.804 (QO/Qi)A3 Vs/Vr = 0.578 Step 4: Determine Qd (Using Figure 2.1, TR -55 or SCS TR -16 and P, determine Qd (in of runoff Qd = 0 in Sten 5: Determine Cnv Area = 0.85 acres Cpv = Vs = (Vs/Vr) * Qd * A/12 Cpv = 0.000 ac -ft Cpv = 0 ft 3 Job Name Henry Street Condominiums Channel Protection Volume Calculation 12/6/2017 Post Development Step 1: Determine Qu P = 2.15 in. (1 -yr. storm) Area = 0.85 acres CN = 70 Ia = 0.857 Ia/P = 0.40 Tc = 0.1 Hrs. Using Figure 4 -II, TR -55 and Tc, determine Qu (csm/in) Qu = 950 csm/in Sten 2: Determine Qo/Oi Using Figure B-1, DEC Manual Appendix Bfor T = 24 hrs. and Qu, determine Qo/Qi QO/Qi = 0.02 I Step 3: Determine Vs/Vr IVs/Vr = 0.682 - 1.43(Qo/Qi) + 1.64 (QO/Qi)A2 - 0.804 (QO/Qi)A3 Vs/Vr = 0.654 Sten 4: Determine Qd (Using Figure 2.1, TR -55 or SCS TR -16 and P, determine Qd (in of runoff) Qd = 0.55 in IStep 5: Determine Cuv Area = 0.85 acres Cpv = Vs = (VsNr) * Qd * A/12 Cpv = 0.025 ac -ft Cpv = 1110 ft (Volume reduction achieved through green infrastructure SMP 1 5294 $3 3 ICpv Req.= -4184 ft 0 1.1 inch retention storage 0 2.83 inch detention storage • Dead load (at maximum retention value): 13 lbs/sf + paver assembly • Total weight at maximum capacity (live load + dead load): 30 lbs/sf + paver assembly PR+ 2+2 HC: Purple -Roof+ 2+2 with detention honeycomb • 2 inches green roof media • 2 inches mineral wool retention layer • 1 inch honeycomb detention reservoir 0 5mm detention layer 0 Raise perimeter edging by 1/2 inch to allow ponding in extreme events 0 1.61 inch retention storage 0 2.56 inch detention storage • Dead load (at maximum retention value): 26 lbs/sf • Total weight at maximum capacity (live load + dead load): 42 lbs/sf In each profile the flow rate is restricted using the Purple -Roof+ 5mm Capillary Detention Layer. Assuming 6 roof drains with 100 inches of drain edge around each drain, and that higher roof areas drain onto lower roof areas, the flow rate for this material is approximately 44.5 gallons per minute. 1►L Memo page 2 Green Roof Diagnostics, 17416 Germanna Highway, Culpeper, VA 22701 Appendix B Soil Survey and Map Set USDA United States Department of - Agriculture N RCS Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Saratoga County, New York November 15, 2017 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http-//www.nres.usda.gov/wps/ portal/nres/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https-//offices.sc.egov.usda.gov/locator/app?agency=nres) or your NRCS State Soil Scientist (http-//www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/? cid=nres142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface.................................................................................................................... 2 SoilMap.................................................................................................................. 5 SoilMap................................................................................................................6 Legend.................................................................................................................. 7 MapUnit Legend.................................................................................................. 8 MapUnit Descriptions.......................................................................................... 8 SaratogaCounty, New York............................................................................10 DeA Deerfield loamy fine sand, nearly level.............................................10 OeE Windsor loamy sand, 25 to 35 percent slopes..................................11 4 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 5 Custom Soil Resource Report Soil Map Ln ° 599190 599210 599230 599250 599270 599290 430 5' S" N r I I , wr f; - f t 3 f / f d, _1 r•r I` O - Q0 755 O 430 50" N 599190 599210 599230 599250 599270 Ln Map Scale: 1:845 if printed on A portrait (8.5" x 11") sheet. Meters N 0 10 20 40 60 Feet 0 40 80 160 240 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 18N WGS84 6 430 5' 0" N 599310 ° 599310 430 5' 5" N � R 1 n Yp 4 f } O AIM 599190 599210 599230 599250 599270 Ln Map Scale: 1:845 if printed on A portrait (8.5" x 11") sheet. Meters N 0 10 20 40 60 Feet 0 40 80 160 240 Map projection: Web Mercator Comer coordinates: WGS84 Edge tics: UTM Zone 18N WGS84 6 430 5' 0" N 599310 MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils 0 Soil Map Unit Polygons N Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip oa Sodic Spot Custom Soil Resource Report Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background a Aerial Photography 7 MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Saratoga County, New York Survey Area Data: Version 17, Oct 8, 2017 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 10, 2015—Mar 29, 2017 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Custom Soil Resource Report Map Unit Legend Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it 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, 0 Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI DeA Deerfield loamy fine sand, nearly level 1.0 58.1% OeE Windsor loamy sand, 25 to 35 percent slopes 0.7 41.9% Totals for Area of Interest 1.8 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it 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, 0 Custom Soil Resource Report 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. 9 Custom Soil Resource Report Saratoga County, New York DeA—Deerfield loamy fine sand, nearly level Map Unit Setting National map unit symbol: 9w9t Elevation. 0 to 1,000 feet Mean annual precipitation. 36 to 48 inches Mean annual air temperature. 45 to 48 degrees F Frost -free period. 125 to 160 days Farmland classification: Farmland of statewide importance Map Unit Composition Deerfield and similar soils. 75 percent Minor components: 25 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Deerfield Setting Landform: Outwash plains, deltas, terraces Landform position (two-dimensional). Summit Landform position (three-dimensional). Tread Down-slope shape. Concave Across -slope shape. Convex Parent material. Sandy glaciofluvial or deltaic deposits derived mainly from granite, gneiss, or sandstone Typical profile H1 - 0 to 10 inches: loamy fine sand H2 - 10 to 26 inches. loamy fine sand H3 - 26 to 72 inches. fine sand Properties and qualities Slope. 0 to 3 percent Depth to restrictive feature. More than 80 inches Natural drainage class. Moderately well drained Capacity of the most limiting layer to transmit water (Ksat). to 19.98 in/hr) Depth to water table. About 18 to 36 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile. Low (about 3.8 inches) Interpretive groups Land capability classification (irrigated). None specified Land capability classification (nonirrigated): 3w Hydrologic Soil Group: A Hydric soil rating. No Minor Components Oakville Percent of map unit. 10 percent Hydric soil rating. No 10 High to very high (1.98 Custom Soil Resource Report Claverack Percent of map unit. 7 percent Hydric soil rating. No Wareham Percent of map unit. 4 percent Hydric soil rating. Yes Wareham Percent of map unit. 4 percent Hydric soil rating. No OeE—Windsor loamy sand, 25 to 35 percent slopes Map Unit Setting National map unit symbol. 2sv17 Elevation. 10 to 1,110 feet Mean annual precipitation. 36 to 71 inches Mean annual air temperature. 39 to 55 degrees F Frost -free period. 140 to 240 days Farmland classification: Not prime farmland Map Unit Composition Windsor and similar soils. 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Windsor Setting Landform: Dunes, outwash plains, outwash terraces, deltas Landform position (three-dimensional): Tread, riser Down-slope shape. Convex, linear Across -slope shape. Convex, linear Parent material. Loose sandy glaciofluvial deposits derived from granite and/or loose sandy glaciofluvial deposits derived from schist and/or loose sandy glaciofluvial deposits derived from gneiss Typical profile Oe - 0 to 1 inches. moderately decomposed plant material A - 1 to 3 inches. loamy sand Bw - 3 to 25 inches. loamy sand C - 25 to 65 inches: sand Properties and qualities Slope. 25 to 35 percent Depth to restrictive feature: More than 80 inches Natural drainage class. Excessively drained Runoff class. Low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to very high (1.42 to 99.90 in/hr) 11 Custom Soil Resource Report Depth to water table. More than 80 inches Frequency of flooding: None Frequency of ponding: None Salinity, maximum in profile: Nonsaline (0.0 to 1.9 mmhos/cm) Available water storage in profile: Low (about 4.5 inches) Interpretive groups Land capability classification (irrigated). None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: A Hydric soil rating. No Minor Components Hinckley Percent of map unit. 10 percent Landform: Outwash plains, deltas, kames, eskers Landform position (two-dimensional). Summit, shoulder, backslope Landform position (three-dimensional): Nose slope, side slope, crest, head slope, rise Down-slope shape. Convex Across -slope shape. Linear, convex Hydric soil rating. No 12 Appendix C SWPPP Inspection Form Henry Street Condominiums WEEKLY SWPPP INSPECTION REPORT Inspector Name: Date: Signature (required): Time: Weather: Inspection #: 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. 2. Inspection following rain event. ❑ ❑ ❑ Date of last inspection: 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? Appendix D 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: 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: Robert Bucher (518) 426-8880 Within 1 hour of a spill discovery greater than 2 gallons the following must be notified: Robert Bucher 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 E Historic Preservation Documentation Environmental Resource Map . z 114TIVEL91 401 111411M14111:1 104 1AZ dre-7:241LI 11.E 1111A1 M41901► M 4 oftTLAtIA611Z Division of Fish and Wildlife, New York Natural Heritage Program 625 Broadway, Fifth Floor, Albany, ICY 12233-4757 P: (518) 402-8935 1 F: (518) 402-8925 www.dec.ny.gov June 13, 2017 Kelly Holzworth The LA Group 40 Long Alley Saratoga Springs, NY 12866 Re: Henry Street Condominiums, 120 Henry Street County: Saratoga Town/City: City Of Saratoga Springs Dear Kelly Holzworth: In response to your recent request, we have reviewed the New York Natural Heritage Program database with respect to the above project. We have no records of rare or state -listed animals or plants, or significant natural communities at the project site or in its immediate vicinity. The absence of data does not necessarily mean that rare or state -listed species, significant natural communities, or other significant habitats do not exist on or adjacent to the proposed site. Rather, our files currently do not contain information that indicates their presence. For most sites, comprehensive field surveys have not been conducted. We cannot provide a definitive statement on the presence or absence of all rare or state -listed species or significant natural communities. Depending on the nature of the project and the conditions at the project site, further information from on-site surveys or other resources may be required to fully assess impacts on biological resources. This response applies only to known occurrences of rare or state -listed animals and plants, significant natural communities, and other significant habitats maintained in the Natural Heritage database. Your project may require additional review or permits; for information regarding other permits that may be required under state law for regulated areas or activities (e.g., regulated wetlands), please contact the NYS DEC Region 5 Office, Division of Environmental Permits, as listed at www.dec.ny.gov/about/39381.html. Sincerely, 'AX'a e""" , Nicholas Conrad Information Resources Coordinator 627 New York Natural Heritage Program INEWY RK Department of E OF R -UNITY Environmental onservati€�n wS HOME SUBMIT SEARCH) COMMUNICATE Cullifol... , - Ti I*! ife :L 13 9 3,n L q III -Y v a' OV& U J AnIN S at, toga 'S PF Fll!gS Q "0 rj 2' ve k It lz Ll " P7 Zl- I'- ri L J L PLLJ