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HomeMy WebLinkAbout20171240 Henry St Condos SWPPP 1121 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 February 12, 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 8 5.6 CHANNEL PROTECTION VOLUME 9 5.7 RUNOFF REDUCTION VOLUME 9 6.0 POST CONSTRUCTION STORMWATER MAINTENANCE 9 6.1 MECHANISM OF OPERATION AND MAINTENANCE 9 6.2 MAINTENANCE TO BE PERFORMED 9 7.0 CONSTRUCTION WASTE 10 8.0 TEMPORARY STABILIZATION FOR FROZEN CONDITIONS 10 9.0 SPILL PREVENTION PRACTICES 11 10.0 CERTIFICATIONS 15 11.0 DEFINITIONS 20 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 nrzhdectu«&EnqiFleer,ngYi Page 1 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 nrzhhectu«&EnqiFleer,ngYi 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 nrzhhectu«&EnqiFleer,ngYi 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 Arthhecture dY Engineering Pi 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 Arthdecture dY Engineering Pi 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, although the water quality volume for the area draining to the green roof is less. The project includes streetscape improvements along Henry Street. Improvements include new curbing and sidewalk. Due to limited space it is infeasible to treat runoff from the sidewalk. A variance is requested from the City to provide treatment of runoff from the sidewalks. In order to compensate for not treating the sidewalk, the green roof has been oversized. 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 nrzhdectu«&EnqiFleer,ngYi 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. Since it is infeasible to collect the run off from the site frontage for treatment, it is also infeasible to reduce peak flow rates exiting the site during post development conditions. An assessment was completed in order to understand the hydraulic effects of the increase on post-development flow rates. See Appendix A for the calculations described below. Stormwater discharge from along the site frontage and the project site is collected via a 12-inch pipe that runs along Henry Street. This pipe connects to a manhole at the southwest corner of the project site, within Henry Street. An additional HydroCAD analysis was performed to understand the additional flows entering the structure from the street. During a 10-year storm event, 2.59 cfs would enter the structure from the project site. This structure also receives flow from the south via run off from Henry Street and Spruce Alley via a 15-inch CPP. Assuming the 15-inch pipe is flowing full (during a large rain event); the maximum flow rate entering the structure would be 4.57 cfs. The invert out of the structure at the intersection of Henry Street and York Street is an 18" CPP that runs east-west along York Street. This pipe discharges directly to the City box culverts which convey flow north along High Rock Avenue. The 18" CPP is installed at a 1% slope per an as-built survey for 38 High Rock Park, by Thompson Fleming on March 10, 2010. Assuming this pipe is flowing full, the maximum flow rate it could convey would be 10.50 cfs. Since the flow rate entering the structure (sum of the 12-inch and 15-inch pipes, and the project site, 7.16 cfs) is less than the full pipe flow rate of the invert out of the structure (10.50 cfs), it was determined that the increase in peak flow rates will not significantly affect the hydraulics of the local storm sewer. Since the 18" CPP also discharges to the underground box culvert, the flows conveyed from this development are of a significantly lower magnitude than what the box culvert could convey. Flow from the green roof will eventually go to the municipal stormwater collection along Henry Street (Analysis Point 1). The LA GROUP Landscape Arthdecture dY Engineering Pi Page 7 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 Pre-Development Post-Development 10 year, 24 hour storm (Qp) 0.81 CFS 2.59 CFS 100 year, 24 hour storm (Qf) 1.58 CFS 4.39 CFS 5.5 Water Quality Volume The following formula was utilized to determine water quality volume: WQv= (P) (Ry)(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 though a green roof. The required WQv for the site is 0.045 ac-ft, the green roof will provide WQv for the site, 0.05 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. There are two different areas that are a part of the green roof system: the green roof and the pavers. For cutsheet information on the layers of the roof described here in, please see Appendix A. The green roof consists of 6" of growing media, a filter sheet, and a drainage/retention element. The drainage and retention element is also below the adjacent paver areas. During dry weather times, the green roof is able to draw water that has been retained in this layer via capillary action. The two volumes considered in the water quality volume are the retention capacity of the green roof, and the retention capacity of the paver areas. The total retention volume is 0.05 ac-ft, based on a retention volume of 2.16 gallons/sf at the green roof and 0.5 gallons/sf at the paver area (see Appendix A for calculations). Table 5-1 Water Quality Volume (WQv) Summary SMPe Provided Type (ac-ft) SMP1 Green Roof 0.05 Total 0.05 !kg The LA GROUP Landscape Arthhecture dY Engineering Pi Page 8 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 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 2,275 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 is 0.05 ac-ft, which is greater than the minimum required runoff reduction volume, 0.025 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 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. The LA GROUP Landscape nrzhdectu«&EnqiFleer,ngYi Page 9 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 • 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 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. The LA GROUP Landscape nrzhdectu«&EnqiFleer,ngYi Page 10 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number-2017017 ■ 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. ■ 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. The LA GROUP Landscape Arthdecture dY Engineering Pi Page 11 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number -2017017 ■ 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: ■ 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 LC)M The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 13 Stormwater Pollution Prevention Plan Henry Street Condominiums The LA Group Project Number -2017017 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 14 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: Douglas Heller Title: Professional Engineer Signature: 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: LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Title: Date: 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 18 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 19 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 LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 19 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. LC)M The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 20 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.) Lc)m The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 21 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. LOM The LA GROUP Land scape h rc h ii eau re & E ng itieering V C Page 22 Appendix A HydroCAD Calculations and Storm Data HYDROCAD CALCULATIONS PRE DEVELOPMENT CL a o ❑ c �/ j N N ro > Ln V o 0-0 Z3 0 Ul o�� Rte; s v p U. v N O co v y (O f6 3 d'inz -°°z a -4to Q a= U H V) a o 0 o O O > a < z o O z m H F- r z z z z LU LU z O x x ov N W a s o i U U w w U m m z o cn m U � u a � z - w ; Q C� LU r 0 CD CD CD I Z w a 0 M Z u� n M O Q \ z NO Q p a Z Z N J J Cf) F -- O H W N mo z QQia _ W J } W ~ Q Z O CD 110, oo� 00 N cn d 3 • _/_ / •.. Q Q \J O M r / /% 29� / ••�Z . Q Vl W C N *41#m z p (f N � ��� °� z o N f zo ■Z m 2 m —87— •�� U] cn < : 8a-� , / —286— — _ _ �4W \ o = Ln o / / X285— \ Q \Q w - M \ U /-2g7✓ / / ��— *#4%p J J r Cl) o � F-- c i � \ \ \ 2�6i � / / / //fig �2� � — ��� � � — •*�1 m z C) co / ti CD cn ¢ vri\ \ \ \ ■ BIZ\ i \ Z - i w Lei X \ LLJ \ I • II d / Of Q Q - r N ^ C7 - ID 4i/ N O M \ U r ul O Q w 41#40 Ln oro r QO w_ � a N Q % ♦ \ a — \ 1 � ♦ y \ ��J M m , 0' 1 e� lb \ �U�o Z V1 I\ I \N I \ NNi o 01- ZNo � QH� mUr ooO O. �r d m £�N 'ry6 S Q a J dJc4p m 11 � \ \ n o .ti Q 8y ti 1S N N , xj bye d N N o S \ \ S� 1S 3° S Q'h \ bLZ / = 1S I S y J ° 3 \\ S S U J J - Z 1 S 00S\ S 0� Pre Development Prepared by The LA Group Printed 6/24/2019 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) 301020 39 >75% Grass cover, Good, HSG A (1, 2) 6,831 98 Paved parking, HSG A (1, 2) 36,851 50 TOTAL AREA Pre Development Prepared by The LA Group Printed 6/24/2019 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 36,851 TOTAL AREA Pre Development Prepared by The LA Group Printed 6/24/2019 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 Nun 30,020 0 0 0 0 307020 >75% Grass cover, Good 6,831 0 0 0 0 6,831 Paved parking 36,851 0 0 0 0 36,851 TOTAL AREA Pre Development Type 11 24 -hr 1 -yr Rainfall=2.15" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 © 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 -Q Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=26,576 sf 18.84% Impervious Runoff Depth>0.34" Tc=6.0 min CN=WQ Runoff=0.34 cfs 747 cf Subcatchment2: Subcat 2 Runoff Area=10,274 sf 17.75% Impervious Runoff Depth>0.32" Tc=6.0 min CN=WQ Runoff=0.12 cfs 272 cf Link AP -1: AP -1 Inflow=0.46 cfs 1,019 cf Primary=0.46 cfs 1,019 cf Total Runoff Area = 36,851 sf Runoff Volume = 1,019 cf Average Runoff Depth = 0.33" 81.46% Pervious = 30,020 sf 18.54% Impervious = 6,831 sf Pre Development Type 11 24 -hr 10 -yr Rainfall=3.75" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 0 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 -Q Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=26,576 sf 18.84% Impervious Runoff Depth>0.62" Tc=6.0 min CN=WQ Runoff=0.59 cfs 1,374 cf Subcatchment2: Subcat 2 Runoff Area=10,274 sf 17.75% Impervious Runoff Depth>0.59" Tc=6.0 min CN=WQ Runoff=0.22 cfs 501 cf Link AP -1: AP -1 Inflow=0.81 cfs 1,876 cf Primary=0.81 cfs 1,876 cf Total Runoff Area = 36,851 sf Runoff Volume = 1,876 cf Average Runoff Depth = 0.61" 81.46% Pervious = 30,020 sf 18.54% Impervious = 6,831 sf Pre Development Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 0 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 -Q Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=26,576 sf 18.84% Impervious Runoff Depth>1.36" Tc=6.0 min CN=WQ Runoff=1.15 cfs 3,022 cf Subcatchment2: Subcat 2 Runoff Area=10,274 sf 17.75% Impervious Runoff Depth>1.31" Tc=6.0 min CN=WQ Runoff=0.42 cfs 1,121 cf Link AP -1: AP -1 Inflow=1.58 cfs 4,143 cf Primary=1.58 cfs 4,143 cf Total Runoff Area = 36,851 sf Runoff Volume = 4,143 cf Average Runoff Depth = 1.35" 81.46% Pervious = 30,020 sf 18.54% Impervious = 6,831 sf Pre Development Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 0 2018 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 1: Subcat 1 Runoff = 1.15 cfs @ 11.98 hrs, Volume= 3,022 cf, Depth> 1.36" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 215569 39 >75% Grass cover, Good, HSG A 51007 98 Paved parking, HSG A 261576 Weighted Average 215569 81.16% Pervious Area 55007 18.84% 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 = 0.42 cfs @ 11.98 hrs, Volume= 1,121 cf, Depth> 1.31" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 85451 39 >75% Grass cover, Good, HSG A 15824 98 Paved parking, HSG A 105274 Weighted Average 81451 82.25% Pervious Area 15824 17.75% 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, 18.54% Impervious, Inflow Depth > 1.35" for 100 -yr event Inflow = 1.58 cfs @ 11.98 hrs, Volume= 4,143 cf Primary = 1.58 cfs @ 11.98 hrs, Volume= 4,143 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs HYDROCAD CALCULATIONS POST DEVELOPMENT CL , , , 81 �S Ln co co co co cr— E M Ln ro W Z Ln V� u Z3 0 < E (D Ll�7 8- Q Ln < �o M" ID Q) (D 0 o c: kn 0 0 o u co r\j m d1: u H Ln co (Y 0 C -D CD N 1 0 't 0 < 0 � F-- CD LLJ C+,l < Ld _j > LLJ Cf) LLJ U) < LLJ p a� 00 w(,n c cn D < Q Li —j Lo I < cn E Z U� CD df m Of C,4 z < m V) LLJ J � CD CN L, cc W cn no� r"i Lq < D Ln pz F, < zk < C, CD 0- - < Lo UCO r) < —i V) < _j INI -6 2,5- --27, II �u z U Lono 'o Z cn C') ae o 01- < LLJ (,4 m J, 6 el 3P / � '�M s > > z aaJ "Sr \ \ / 1S S O N (4) Sub at 4 AP - 1 3 1--00 AAii�-61 Subcat 3 2 1 Subcat 2 Subcat 1 SubcatReach 4on Link Routing Diagram for Post Development _DBH Prepared by The LA Group, Printed 6/24/2019 HydroCADOO 10.00-21 s/n 00439 OO 2018 HydroCAD Software Solutions LLC Post Development_DBH Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 2 Area Listing (selected nodes) Area CN Description (sq -ft) (subcatchment-numbers) 151054 39 >75% Grass cover, Good, HSG A (1, 21 31 4) 21797 98 Paved parking, HSG A (1, 2, 3, 4) 36,851 74 TOTAL AREA Post Development_DBH Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 3 Soil Listing (selected nodes) Area Soil Subcatchment (sq -ft) Group Numbers 361851 HSG A 1, 2, 3, 4 0 HSG B 0 HSG C 0 HSG D 0 Other 36,851 TOTAL AREA Post Development_DBH Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 © 2018 HydroCAD Software Solutions LLC Page 4 Ground Covers (selected 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 Nun 15,054 0 0 0 0 157054 >75% Grass cover, Good 21797 0 0 0 0 21797 Paved parking 36,851 0 0 0 0 36,851 TOTAL AREA Post Development_DBH Type 11 24 -hr 1 -yr Rainfall=2.15" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 © 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 -Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=17,711 sf 65.68% Impervious Runoff Depth>1.18" Tc=6.0 min CN=WQ Runoff=0.78 cfs 1,736 cf Subcatchment2: Subcat 2 Runoff Area=7,505 sf 23.29% Impervious Runoff Depth>0.42" Tc=6.0 min CN=WQ Runoff=0.12 cfs 261 cf Subcatchment3: Subcat 3 Runoff Area=9,695 sf 69.14% Impervious Runoff Depth>1.24" Tc=6.0 min CN=WQ Runoff=0.45 cfs 1,000 cf Subcatchment4: Subcat 4 Runoff Area=1,939 sf 88.32% Impervious Runoff Depth>1.58" Tc=6.0 min CN=WQ Runoff=0.11 cfs 256 cf Link AP -1: AP -1 Inflow=1.46 cfs 3,253 cf Primary=1.46 cfs 3,253 cf Total Runoff Area = 36,851 sf Runoff Volume = 3,253 cf Average Runoff Depth = 1.06" 40.85% Pervious = 15,054 sf 59.15% Impervious = 21,797 sf Post Development_DBH Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 0 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 -Q Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment 1: Subcat 1 Runoff Area=17,711 sf 65.68% Impervious Runoff Depth>3.72" Tc=6.0 min CN=WQ Runoff=2.33 cfs 5,492 cf Subcatchment2: Subcat 2 Runoff Area=7,505 sf 23.29% Impervious Runoff Depth>1.59" Tc=6.0 min CN=WQ Runoff=0.39 cfs 993 cf Subcatchment3: Subcat 3 Runoff Area=9,695 sf 69.14% Impervious Runoff Depth>3.90" Tc=6.0 min CN=WQ Runoff=1.34 cfs 3,147 cf Subcatchment4: Subcat 4 Runoff Area=1,939 sf 88.32% Impervious Runoff Depth>4.86" Tc=6.0 min CN=WQ Runoff=0.34 cfs 786 cf Link AP -1: AP -1 Inflow=4.39 cfs 10,418 cf Primary=4.39 cfs 10,418 cf Total Runoff Area = 36,851 sf Runoff Volume = 10,418 cf Average Runoff Depth = 3.39" 40.85% Pervious = 15,054 sf 59.15% Impervious = 21,797 sf Post Development_DBH Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 0 2018 HydroCAD Software Solutions LLC Page 2 Summary for Subcatchment 1: Subcat 1 Runoff = 2.33 cfs @ 11.96 hrs, Volume= 5,492 cf, Depth> 3.72" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 65079 39 >75% Grass cover, Good, HSG A 111632 98 Paved parking, HSG A 171711 Weighted Average 65079 34.32% Pervious Area 115632 65.68% 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= 993 cf, Depth> 1.59" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 55757 39 >75% Grass cover, Good, HSG A 15748 98 Paved parking, HSG A 75505 Weighted Average 51757 76.71 % Pervious Area 15748 23.29% 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 = 1.34 cfs @ 11.96 hrs, Volume= 3,147 cf, Depth> 3.90" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 21992 39 >75% Grass cover, Good, HSG A 61703 98 Paved parking, HSG A 95695 Weighted Average 25992 30.86% Pervious Area 65703 69.14% Impervious Area Post Development_DBH Type 11 24 -hr 100 -yr Rainfall=6.20" Prepared by The LA Group Printed 6/24/2019 HydroCADO 10.00-21 s/n 00439 0 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 Subcatchment 4: Subcat 4 Runoff = 0.34 cfs @ 11.96 hrs, Volume= 786 cf, Depth> 4.86" Runoff by SCS TR -20 method, UH=SCS, Weighted -Q, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24 -hr 100 -yr Rainfall=6.20" Area (sf) CN Description 227 39 >75% Grass cover, Good, HSG A 15713 98 Paved parking, HSG A 11939 Weighted Average 227 11.68% Pervious Area 15713 88.32% 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, 59.15% Impervious, Inflow Depth > 3.39" for 100 -yr event Inflow = 4.39 cfs @ 11.96 hrs, Volume= 10,418 cf Primary = 4.39 cfs @ 11.96 hrs, Volume= 10,418 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Job Name and # Henry Street Minimum Runoff Reduction Volume 12/5/2017 RRv = [(P)(Rv*)(Ai)]/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=0.551 B=0.401 C=0.301 D=0.20 S (HSG A) 0.55 Aic 0.50 acres Rv 0.95 90% Rainfall 1.15 Ai 0.274 RRv = 0.025 acre feet = 11085 ft' 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 21669 * *Includes green roof area as impervious. WQv Required = 1973 ft 3 0.045 ac-ft 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 = 74 Ia = 0.703 Ia/P = 0.33 Tc = 0.1 Hrs. Using Figure 4 -II, TR -55 and Tc, determine Qu (csm/in) Qu = 950 csm/in Sten 2: Determine Qo/Qi Using Figure B-1, DEC Manual Appendix Bfor T = 24 hrs. and Qu, determine Qo/Qi QO/Qi = 0.02 Sten 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 I Step 4: Determine Qd (Using Figure 2.1, TR -55 or SCS TR -16 and P, determine Qd (in of runoff Qd = 0.55 in Sten 5: Determine Cnv Area = 0.85 acres Cpv = Vs = (Vs/Vr) * Qd * A/12 Cpv = 0.025 ac -ft Cpv = 1110 ft 3 (Volume reduction achieved through green infrastructure SMP 1 2275 ft 3 3 ICpv Req: -1165 ft Henry Street Condominiums Green Roof Manufacturer's Information Area sf Volume Retained gal/sf Volume Retained gallons Volume Retained Cf Green Roof 5120 2.16 11059 1479 Pavers 3189 0.54 1722 230 Subtotal 1709 1" of Ponding 5120 - - 427 Total WQv Provided Total WQv Provided 2135 cf 0.05 ac -ft Green Roof System From cutsheet: 1.8 gal/sf 2.16 ga I/sf Retention for a system with 5" of media. Linearly scaled for 6" of media. Pavers 0.42 gal/sf (Floradrain) From cut sheet 0.12 gal/sf (SSM45) From manufacturer 0.54 ga I/sf Tota I Retention capacity is a combination of the SSM45 filter fabric and the FD40E Floradrain. Product Data Sheet Protection Mat SSM 45 Water and nutrient retention mat of recy- cled synthetic fibers, for the application as a protection layer under green roofs, gravel fills, slab pavings, etc. Features • resistant to mechanical stress • with proven protective effect according to European Standard EN ISO 13428 • water and nutrient retention • non -rotting • biologically neutral • bitumen and polystyrene compatible • made of recycled fibers • quick and easy installation Technical Data k 5 EDP No. 2046 Protection Mat SSM 45 High quality recycled fiber mat made of polyester/polypropylene, with fleece backing. Color: brown mottled Thickness: ca. 0.2 in. (ca. 5 mm) Weight: ca. 0.1 lbs/sq. ft. (ca. 470 g/m2) Water retention capacity: ca. 0.12 gal/sq. ft. (ca. 5 I/m2) Strength class: 3 Protection efficiency according to EN ISO 13428: Residual thickness >_ 40 % Tensile strength lengthwise: > 31.4 lbs/in. (> 5.5 kN/m) Extension lengthwise: > 75 % Dimensions: ca. 6.6 ft. x 32.8 ft. (ca. 2.00 m x 10.00 m) ca. 215 sq. ft. (ca. 20 m2), folded Installation Instructions Install the Protection Mat SSM 45 above a waterproofing or root barrier with an overlap of 4 inch. The protection mat has to be taken above the Growing Media along edges and at roof penetrations. Cut the protection mat in situ at roof penetrations. Consider an Health and Safety This product does not require a material safety data sheet (MSDS) according to the OSHA Hazard Communication Standard (29 CFR 1910.1200). When used as recommended or under ordinary ZinCo USA Inc. 471 Page Street, Unit 5 • Stoughton, MA 02072 Phone 866 766 3155 • Fax 866 766 3955 info@zinco-usa.com • www.zinco-usa.com allowance for overlap and wastage of ca. 10-15 %. Protection Mat SSM 45 is, included, but not limited to, to be installed according to manufacturer's instructions, not exposed to UV -light, completely covered. Call manufacturer for further options. conditions, it should not present a health and safety hazard. However, an MSDS can be provided as a courtesy in response to a customer request. Lifl Product Data Sheet Floradrain@ FD 40-E Drainage and water retention element of recycled polyolefin for use on extensive and semi -intensive green roofs with or without slope. Plastic Connector WV C E ETA -13/0668 Features • universal element for extensive and intensive green roof build-ups high drainage capacity • also suitable for roofs without slope water retention even on sloped roofs walkable biologically neutral quick and easy installation • connectors are also available for a more comfortable installation especially on gentle sloped roofs Technical Data {} ' EDP No. 3041 Floradrain° FD 40-E Drainage and water retention element of thermoformed recycled polyolefin. Material: Polyolefin, mainly PE (REC) (ca. 170 kN/m2) Color: dark grey (ca. 250 kN/m2) Height: ca. 1.6 in. (ca. 40 mm) Weight: ca. 0.4 lbs/sq. ft. (ca. 2.0 kg/m2) Diffusion opening: ca. 0.1 in. (ca. 2 mm) Water retention capacity: ca. 0.15 gal/sq. ft. (ca. 6 I/m2) Filling volume: ca. 0.42 gal/sq. ft. (ca. 17 I/m2) Max. compressive strength (at 10 % compression): - without filling: ca. 24.7 psi (ca. 170 kN/m2) - with filling ca. 36.3 psi (ca. 250 kN/m2) In -plane Water Flow Rate: - roof slope 1 %: ca. 7.2 gpm/ft. (ca. 1.5 1/(s -m)) - roof slope 2 %: ca. 10.1 gpm/ft. (ca. 2.1 1/(s -m)) - roof slope 3 %: ca. 12.6 gpm/ft. (ca. 2.6 1/(s -m)) Dimensions: ca. 3.3 ft. x 6.6 ft. (ca. 1.00 m x 2.00 m) Accessories: Plastic Connector EDP No. 9620 (to be pressed into diffusion openings) Material: POM (Po lyoxymethyl ene) Installation Instructions Install the Drainage Element Floradrain° FD 40-E on the protection mat. The drainage elements are installed butt jointed, in green roof applications with the evaporation holes facing up, for hard landscape applications with the evaporation holes facing down and infilled with well graded coarse sand Health and Safety This product does not require a material safety data sheet (MSDS) according to the OSHA Hazard Communication Standard (29 CFR 1910.1200). When used as recommended or under ordinary ZinCo USA Inc. 471 Page Street, Unit 5 • Stoughton, MA 02072 Phone 866 766 3155 • Fax 866 766 3955 info@zinco-usa.com • www.zinco-usa.com (3/8 in. to # 100). Cut the drainage ele- ment in situ at roof penetrations. Consider an allowance for wastage of ca. 3 %. Floradrain° FD 40-E is, included, but not limited to, to be installed according to manufacturer's instructions, not exposed to UV -light, completely covered. Call manufacturer for further options. conditions, it should not present a health and safety hazard. However, an MSDS can be provided as a courtesy in response to a customer request. Life or System Data Sheet "Perennial Garden" with Floradrain@ FD 40-E ! Plant layer according to plant list { 4,t Protection Mat SSM 45 L Root Barrier WSF 40 (optional) Technical Data Slope: 0/12-2/12 Height: ca. 63/4 in. Weight: ca. 42 lbs/sq. ft. Water retention capacity: ca. 1.8 gal/sq. ft. Benefits • Attractive Green Roof with perennials, grasses and herbs such as Lavender, Thyme, and Oregano. • Installation on flat roofs and roofs with a slope of up 2/12. • By shaping the substrate layer it is possible to create a varied appearance, requires periodic care and maintenance. During dry season additional irrigation is necessary. • Various designs and combinations with walkways and patios are possible. ZinCo USA Inc. 471 Page Street, Unit 5 • Stoughton, MA 02072 Phone 866 766 3155 • Fax 866 766 3955 info@zinco-usa.com • www.zinco-usa.com Subject to technical alterations and printing errors • First edition 01 /2007; Revised 12/2012 MIR Plant layer according to plant list Growing Media "Zincoblend I", Depth: ca. 5 in. (ca. 125 mm) Filter Sheet SF Drainage Element Floradrain° FD 40-E Protection Mat SSM 45 Root Barrier WSF 40 (optional) • Life on Roofs MANNING'S EQUATION CALCULATIONS: Based on the formula Q = 1.486/n x AR 2/3 x S1/2 where R = A/P Pipe Diameter 15 inches Cross-sectional area, A = 1.23 SF Wetted perimeter, P = 3.93 FT Channel slope, S = 0.0050 FT/FT Roughness coefficient, n = 0.013 Flow, Q = 4.57 CFS Velocity, V = 3.72 FPS Check capacity of 18 inch sewer (flowing full) : Use Manning's Equation where: Cross-sectional area, Wetted perimeter, Channel slope, Roughness coefficient, A = 1.77 SF P = 4.71 FT S = 0.010 FT/FT n = 0.013 Flow, Q = 10.50 CFS or 4714.5 GPM Velocity, V = 5.94 FPS Henry Street Drainage 1 12/8/2017 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 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 O Q N ry N U L. O N ry O E O cn U ti O LW m O L :3�� � U O O L) U) L^' m W L N m in N ?> L O Q O 0^ U (n L m U •L O N E m O p L E E 9 m Z m N Cm U m ' Q m =m-1.., o 4 � 0 Ltd :3 m-0 " O M N 0- " U) E L C 0 m E Nm O O O O M��� > M L �Ma)�� o o � -,.s C: �� W a W E m 0C = cn W V C N L L a) Z a �N cn o o E w _��0 O � E v w c/) MML- �o/•� zco m �cma, En E fA O U O O a O � U U O Q O O > O O N O U O O U �� O N 0 O O U (a cn E O Q LL Z a) m — � > O o m.L U � i (6 O M m O cn (� • L — E � O N � �^'' Q O V O U O N j � � �' � 0)O M Cl) N (a M N M Cl) O U W m O � U cn L L U � � � O + =. L W � d^)' W � L � a m � � `� L � J is � N O Q � .--. N � m O - � O 4--1 U O +r O m O i= O z E U Q U O (6 C O �, (6 O L L O 0) (� O }N—, -0' --� O . �_ O� � C n > �+ L O O M: � i� O m Q i O V) is N (n N j O O U) (/) +� t6 O _ U .O >, O _ C L � O m (6 N _cn O 1 M U U N N > O m O N _ O O Q O �70 m 1 O m m N .� L cn O N S N >, U) > O O N O 0 N m C O U W — U cn N O o- E p >O p U) > U m O j U � Q m � O p U) U) p Ln U) M O� D N EO U cn � cn m m Li U m L- a ) m � cm O o mo n Q L O ma o L a0) �o _ Q O (n cn > a) m Q) N F- O cn cn cn r_ m o m L- p Q) Q Z LL °a o L Lsi m J a a = 00 O a)_ o L O CIL `-' j O 0-J �• O �� �• N En 4- E L:3 L (n Q) Q Q) O0 o c c6 C L }, a m m Q❑ a >, o o — O m — � 0 (n Q 0 LU OL U) a) +r C) a 2 — 2 2 LL O o — — U) >, � a) m m U) > > � � O � a) m � U m a) Q) L O Y a� U i Q 0 (n 0 0 = O O fn (n 'F) m m m U O L- � U CD CD c J J (1) 0- O (6 0� (n ca (1) w w w w O w c IL 0•� � 'L) o ❑ El cn a Cl) ti 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. ❑ ❑ ❑ 2. ❑ ❑ ❑ Routine Inspection. Date of last inspection: 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? c. ❑ ❑ ❑ 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 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. 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