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HomeMy WebLinkAbout20250533 26 Finley St Site Plan SWPPPSTORMWATER POLLUTION PREVENTION PLAN RISE - Finley Street Resindential June 20TH, 2025 PREPARED FOR: RISE Housing and Support Services 127 Union Street Saratoga Springs, NY 12822 REVISED: PAGE 2 Table of Contents 1.0 EXECUTIVE SUMMARY ............................................................................................................... 5 1.1 RESPONSIBILITIES OF THE PARTICIPANTS ........................................................................................... 5 1.2 PARTICIPANT CONTACT INFORMATION........................................................................................... 11 2.0 SITE DESCRIPTION .................................................................................................................... 11 2.1 LOCATION ............................................................................................................................... 12 2.3 SOILS AND GROUNDWATER ......................................................................................................... 12 2.4 LAND COVER ............................................................................................................................ 12 2.5 WETLANDS .............................................................................................................................. 12 2.6 SURFACE WATERS ..................................................................................................................... 12 2.7 RAINFALL DATA ........................................................................................................................ 12 2.8 EXISTING LAND USE ................................................................................................................... 13 3.0 PERMIT ELIGIBILITY .................................................................................................................. 13 3.1 STATE HISTORIC PRESERVATION OFFICE ...................................ERROR! BOOKMARK NOT DEFINED. 3.2 THREATENED AND ENDAGERED SPECIES ......................................................................................... 13 4.0 PROJECT DESCRIPTION ............................................................................................................. 13 5.0 METHODOLOGY ....................................................................................................................... 14 6.0 PROCESS FOR STORMWATER SITE PLANNING AND PRACTICE SELECTION................................ 15 6.1 SITE PLANNING ......................................................................................................................... 15 6.2 DETERMINE THE WATER QUALITY VOLUME AND MINIMUM REDUCTION VOLUME .................................. 18 6.3 RUNOFF REDUCTION BY APPLYING GREEN INFRASTRUCTURE TECHNIQUES AND STANDARD SMPS WITH RRV CAPACITY ............................................................................................................................................. 18 6.4 RUNOFF REDUCTION TECHNIQUE EVALUATION ................................................................................ 20 6.5 STANDARD STORMWATER MANAGEMENT PRACTICES TO TREAT WATER QUALITY VOLUME NOT ADDRESSED BY GREEN INFRASTRUCTURE TECHNIQUES ....................................................................................................... 22 7.0 HYDROLOGIC AND HYDRAULIC ANALYSIS ................................................................................ 22 7.1 EXISTING PRE-DEVELOPMENT CONDITIONS..................................................................................... 22 7.2 PROPOSED POST-DEVELOPMENT WATERSHED CONDITIONS ............................................................... 23 7.3 PROPOSED WATER QUANTITY AND QUALITY CONTROLS .................................................................... 24 8.0 CLIMATE CHANGE CONSIDERATIONS ....................................................................................... 27 8.1 PHYSICAL RISKS DUE TO CLIMATE CHANGE ..................................................................................... 27 9.0 PERMANENT STORMWATER MANAGEMENT SYSTEM FEATURES ............................................ 29 9.1 CONVEYANCE PIPING ................................................................................................................. 29 9.2 STORMWATER MANAGEMENT SYSTEM .......................................................................................... 29 10.0 STORMWATER EROSION AND SEDIMENT CONTROLS............................................................... 30 10.1 EROSION AND SEDIMENT CONTROLS ............................................................................................. 30 10.2 OTHER POLLUTANT CONTROLS ..................................................................................................... 31 10.3 BEST MANAGEMENT PRACTICES ................................................................................................... 32 RISE – Finley Street Residential PAGE 3 11.0 CONSTRUCTION SEQUENCE SCHEDULING ................................................................................ 34 12.0 IMPLEMENTING THE SWPPP ................................................................................................... 35 12.1 EMPLOYEE TRAINING ................................................................................................................. 35 12.2 SITE INSPECTIONS...................................................................................................................... 35 12.3 MAINTENANCE ......................................................................................................................... 36 12.4 PROGRESS REPORTS AND SUMMARIES ........................................................................................... 36 12.5 CERTIFICATION ......................................................................................................................... 37 12.6 NYSDEC WINTER SITE STABILIZATION /SITE INSPECTIONS FOR CONSTRUCTION SITES............................... 37 13.0 POST CONSTRUCTION OPERATION AND MAINTENANCE......................................................... 38 13.1 OPERATION AND MAINTENANCE PLAN/REPORT .............................................................................. 38 14.0 CONCLUSION ........................................................................................................................... 38 PAGE 4 APPENDICIES Appendix A: Owner & Contractor Certification Forms Appendix B: Site Location/Drainage Area/Drainage Pattern Maps Appendix C: Pre-Development and Post-Development Run-off Calculations Appendix D: Calculations- Storm Management, Green Infrastructure, Pipe Sizing Appendix E: Grading/Drainage/Sediment, Erosion Control Plan, and Landscaping Plan Appendix F: NYSDEC SPDES General Permit GP-0-25-001 Appendix G: Construction Phase Inspection Report (Sample Form) Appendix H: MS4 Acceptance Form Appendix I: Notice of Intent (NOI) Appendix J: Notice of Termination (NOT) Documentation Appendix K: Deep Ripping and Decompaction Appendix L: Permit Eligibility PAGE 5 1.0 Executive Summary This Water Quality and Quantity Plan and Stormwater Pollution Prevention Plan (SWPPP) has been prepared pursuant to the Environmental Protection Agency’s (EPA) and the New York State Department of Environmental Conservation’s (NYSDEC) Phase II Storm Water Regulations. All responsible parties as defined below are responsible for executing the SWPPP and for complying with the requirements set forth in the EPA’s National Pollution Discharge Elimination System (NPDES) General Permit, the NYSDEC’s State Pollution Discharge Elimination System (SPDES) General Permit GP-0-25-001, and any local governing agencies having jurisdiction with regard to erosion and sediment control. This SWPPP has been prepared in accordance with Stormwater Management Planning techniques and Green Infrastructure Practices required by the most current version of the New York State Stormwater Management Design Manual (Design Manual). These planning techniques and practices emphasize a holistic approach to resource protection, water quality treatment, flow volume control, maintenance cost reduction, and the dynamics of stormwater science. According to the Design Manual, the green infrastructure approach for stormwater management reduces a site’s impact on the aquatic ecosystem through the use of site planning techniques, runoff reduction techniques, and certain standard stormwater management practices. The purpose of the Water Quality and Quantity Plan and the SWPPP described herein is to provide for the detention of high intensity storms (up to the 100-year storm) and the passive water quality treatment of low intensity storms. These controls and treatments will be achieved using appropriate temporary and permanent features such as drainage ditches, conveyance channels, conveyance piping, green infrastructure, and earth formed stormwater management basins. The goal is to limit the post- development storm water discharge rate to that of the pre-development flows and prevent discharge of pollutants into receiving waters. This SWPPP has been prepared in accordance with the most current effluent limitations applicable to discharges from construction activities. The stormwater discharges outlined in this report will achieve, at a minimum, the effluent limitations outlined in Part II.B.1 (a)-(e) of NYSDEC’s SPDES GP-0-25-001. Additionally, this Plan outlines methods that Owners and Contractors can use to adjust construction practices in a way that will retain surface water quality and prevent sediment laden runoff from entering wetlands, streams, rivers, lakes and then ultimately to estuaries or other sensitive environments. This plan describes methods for stormwater management and runoff management during the construction phase and summarizes responsible stormwater pollution prevention practices that can be phased into everyday activities post construction. 1.1 Responsibilities of the Participants All responsible parties shall comply with the measures set forth in this SWPPP and in accordance with the NYSDEC General Permit. The following outlines the responsibilities of all participants: Owner/Operator/Permittee The following is a summary of the Owner’s responsibilities: PAGE 6 1. Satisfy the requirements of the State Environmental Quality Review Act when SEQR is applicable and where required, all necessary Department permits subject to the Uniform Procedures Act (UPA). 2. An owner or operator of a construction activity that is not subject to the requirements of a regulated, traditional land use control MS4 must first develop a SWPPP in accordance with all applicable requirements of this permit and then submit a completed eNOI form electronically to the NYSDEC in order to be authorized to discharge under this permit. The eNOI form shall be one which is associated with this permit, signed in accordance with Part I.D of GP-0-25-001. 3. An owner or operator of a construction activity that is subject to the requirements of a regulated, traditional land use control MS4 must first develop a SWPPP in accordance with all applicable requirements of this permit and then have its SWPPP reviewed and accepted by the MS4 prior to submitting the eNOI to the Department. The owner or operator shall have the “MS4 SWPPP Acceptance” form signed by the principal executive officer or ranking elected official from the regulated, traditional land use control MS4, or by a duly authorized representative of that person, and then upload that form to the eNOI prior to submittal of the eNOI to the NYSDEC. 4. Read and understand the Electronic Notice of Intent (e NOI) and the SWPPP to make sure they are in accordance with the requirements of the General Permit. Certify the eNOI and the SWPPP by signing the Owner/Operator Certification statement contained in the NOI. 5. The owner shall have the SWPPP preparer sign the “SWPPP Preparer Certification” form contained in the eNOI. The form shall then be uploaded to the eNOI prior to submittal of the eNOI to the NYSDEC. 6. The owner/Operator shall sign the “Owner/Operator Certification” form contained in the eNOI. The form shall then be uploaded to the eNOI prior to submitting the eNOI to the NYSDEC. The eNOI should then be submitted electronically to the NYSDEC using the NYSDEC approved form. 7. As of the date the eNOI is submitted to the Department, the owner or operator shall make the eNOI and SWPPP available for review and copying in accordance with the requirements in Part VII.H. of this permit. 8. Ensure the provisions of the SWPPP are implemented from the commencement of construction activity until final stabilization and the Notice of Termination (NOT) has been submitted to the NYSDEC. 9. Identify the contractor(s) and/or subcontractors(s) involved with construction activity that disturbs site soils prior to commencement of construction. Require all contractor(s) and/or subcontractor(s) fully implement the SWPPP and adhere to requirements set forth in the General Permit by having them sign the “contractor certification” in Appendix A. Each of these contractors and subcontractors shall have at least one trained individual from their company that will be responsible for implementation of the SWPPP and be on site when soil disturbing activities are occurring. 10. Maintain a copy of the General Permit (GP-0-25-001), NOI, NOI Acknowledgement Letter, SWPPP, MS4 SWPPP Acceptance form, Contractor Certification(s), and inspection reports for the duration of construction activity until a NOT is filed with the NYSDEC. These documents should be kept in a secure location on site accessible during normal working hours. PAGE 7 11. Obtain the services of a qualified inspector to conduct regular on-site inspections for general compliance with the SWPPP and the SPDES General permit at least once every seven (7) calendar days. 12. Obtain prior written authorization from the NYSDEC or MS4 if construction activity will disturb greater than five (5) acres of soil at any one time. A copy of this authorization should be kept on site. For as long as there is greater than five acres of soil disturbance, inspections shall be conducted twice every seven days with a minimum of two days separation. When soil disturbance has been temporarily or permanently suspended in these areas, stabilization measures shall be applied within seven days. A phasing plan defining maximum disturbance and required cuts and fills shall be developed as well as any additional site-specific practices needed to protect water quality. 13. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4, the owner or operator shall notify the MS4 in writing of any planned amendments or modifications to the post-construction stormwater management practice component of the SWPPP required by Part III.A. 5 of this permit. Unless otherwise notified by the MS4, the owner or operator shall have the SWPPP amendments or modifications reviewed and accepted by the MS4 prior to commencing construction of the post-construction stormwater management practice. 14. Upon project completion and when the site has reached final stabilization, the Owner shall request termination of coverage under GP 0-25-001 by submitting and completing an Electronic Notice of Termination (eNOT) form electronically to the NYSDEC using the NYSDEC approved form. 15. Retain all site records and documentation including project plans and reports, the SWPPP, SWPPP inspection reports and all records of data used to complete the NOI for a minimum of five (5) years from the date the site reached final stabilization. 16. It is the responsibility of the owner or operator to provide documentation supporting the determination of permit eligibility with regard to Park I.D.10 (Historic Places). At a minimum, the supporting documentation shall include: information on whether the stormwater discharge or construction activities would have an effect on a property that is listed or eligible for listing on the State or National Register of Historic Places, results of historic places screening determinations conducted, a description of measures necessary to avoid or minimize adverse impacts on places listed or eligible for listing, or where effects may occur, any written agreements that the owner or operator has made with the OPRHP or other governmental agency to mitigate those effects, or local land use approvals evidencing the same. 17. It is the responsibility of the owner or operator to provide documentation supporting the determination of permit eligibility with regard to construction activities that may adversely affect an endangered or threatened species unless the owner or (Part I.F.4) 10 operator has obtained a permit issued pursuant to 6 NYCRR Part 182 for the project or the Department has issued a letter of non-jurisdiction for the project. All documentation necessary to demonstrate eligibility shall be maintained on site in accordance with Part II.D.2 of this permit; PAGE 8 Notice to Purchaser and Developers This SWPPP provides guidance to comply with the New York State Pollutant Discharge Elimination System (SPDES) for stormwater discharges associated with construction activities (GP-0-25-001). The Notice of Intent (eNOI) submitted to New York State to obtain permit coverage identifies the owner/operator of the land who is responsible for compliance with the General Permit and the project SWPPP. If a separate party (herein referred to as the Purchaser) purchases land from the permitted owner/operator, and disturbs soil as part of the residential subdivision, the owner/operator has the obligation to ensure that the Purchaser’s construction complies with the General Permit and the project SWPPP. Any amendments made to this SWPPP due to alteration of the scope of the project, or needed amendments due to compliance with a New York State revision to the General Permit are also the responsibility of the owner/operator. When property ownership changes or when there is a change in operational control over the construction plans and specifications, the original owner or operator must follow the guidelines outlined in Part 1. G of GP-0-25-001. Once the new owner or operator obtains permit coverage, the original owner or operator shall then submit a completed eNOT with the name and permit identification number of the new owner or operator to the Department. If the original owner or operator maintains ownership of a portion of the construction activity and will disturb soil, they must maintain their coverage under the permit. Permit coverage for the new owner or operator will be effective as of the date the new owner receives the letter of acknowledgement (LOA) from the NYSDEC. Owner’s Engineer The following is a summary of the Engineer’s responsibilities: 1. Prepare this SWPPP using good Engineering practices, best management practices, and in compliance with NYSDEC Stormwater Regulations under General Permit (GP-0-25-001) and the “New York Standards and Specifications for Erosion and Sediment Control”. 2. Prepare the NOI for the Owner to submit to the NYSDEC. The SWPPP preparer shall sign the “SWPPP Preparer Certification” contained in the NOI. 3. Update the SWPPP each time there is a significant modification to the design or construction which may have a significant effect on the potential for discharge of pollutants into receiving waters. Contractors and Sub Contractors The following is a summary of responsibilities for Contractors and/or subcontractors involved with construction activities that disturb soils on site: 1. Certify that the SWPPP has been read and understood by signing the Contractor Certification statement contained in Appendix A of this report. 2. In addition to providing the certification statement above, the certification page must also identify the specific elements of the SWPPP that each contractor and subcontractor will be responsible for and include the name and title of the person providing the signature; the name and title of the trained contractor responsible for SWPPP implementation; the name, address and telephone PAGE 9 number of the contracting firm; the address (or other identifying description) of the site; and the date the certification statement is signed. The owner or operator shall attach the certification statement(s) to the copy of the SWPPP that is maintained at the construction site. If new or additional contractors are hired to implement measures identified in the SWPPP after construction has commenced, they must also sign the certification statement and provide the information listed above. 3. Fully implement the SWPPP and the requirements set forth in the SPDES General Permit. 4. Conduct inspections on a regular basis of the erosion and sedimentation controls installed at the site. Responsible for installing, constructing, repairing, inspecting, and maintaining the erosion and sediment control practices. Each of these contractors and subcontractors shall have at least one trained individual from their company that will be responsible for implementation of the SWPPP and be on site when soil disturbing activities are occurring. This person shall be known as the trained contractor. The owner or operator shall ensure that at least one trained contractor is on site on a daily basis when soil disturbances are being performed. Site Inspector The owner or operator shall have a qualified inspector conduct site inspections in conformance with the general permit. The following is a summary of the Site Inspector’s responsibilities: 1. Inspections should be completed only by a “qualified inspector”. Definition of qualified inspector is: A qualified inspector means a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder or other Department endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. 2. Conduct on-site inspections at least once every seven (7) calendar days for general compliance with the SWPPP and the NYSDEC SPDES General Permit. Inspection reports will be provided to the Owner and all contractors and subcontractors involved with earth disturbing activities within one business day of the field inspection. The inspector shall sign the certifying statements contained at the end of the inspection reports. See section 9.2 of this SWPPP for further detail concerning inspections as well as winter shutdown inspection requirements. The inspection reports shall include and/or address the following: • Permit identification number PAGE 10 • The date and time of the inspection • Name and title of person(s) performing inspection; • Description of the weather and soil conditions at the time of the inspection; • Description of the condition of the runoff at all points of discharge from the construction site. This must include identification of any discharges of sediment from the construction site. Include discharges from conveyance systems (i.e. pipes, culverts, ditches, etc.) and overland flow. • A description of the condition of all surface waters of the State located within, or immediately adjacent to, the property boundaries of the construction site which receive runoff from disturbed areas. This must include identification of any discharges of sediment to the surface waters of the State; • Identification of all erosion and sediment control practices that need repair or maintenance; • Identification of all erosion and sediment control practices that were not installed properly or are not functioning as designed and require reinstallation or replacement. • Description and sketch of disturbed areas with active soil disturbance activity, areas that have been disturbed but are inactive at the time of the inspection, and areas that have been stabilized (temporary and or/ final) since the last inspection; • Total area of soil disturbance (acres) at the time of inspection of the following: o Total area with active soil disturbance (not requiring either temporary stabilization or final stabilization) o Total area with inactive soil disturbance (requiring either temporary stabilization or final stabilization) o Total area that has achieved temporary stabilization; and o Total area that has achieved final stabilization • Must identify the current stage of construction of all post-construction stormwater management practices and identification of all construction activity on site that is not in conformance with the SWPPP and technical standards. • Corrective actions that must be taken to install, repair, replace or maintain erosion and sediment control practices; and to correct deficiencies identified with the construction of the post-construction stormwater management practices; • Identification and status of all corrective actions that were required by previous inspection; • Digital photographs, with date stamp, that clearly show the condition of all practices that have been identified as needing corrective actions. The qualified inspector shall attach paper color copies of the digital photographs to the inspection report being maintained onsite within seven (7) calendar days of the date of the inspection. The PAGE 11 qualified inspector shall also take digital photographs, with date stamp, that clearly show the condition of the practice(s) after the corrective action has been completed. The qualified inspector shall attach paper color copies of the digital photographs to the inspection report that documents the completion of the corrective action work within seven (7) calendar days of that inspection. 3. At a minimum, the qualified inspector shall inspect all erosion and sediment control practices to ensure integrity and effectiveness, all post-construction stormwater management practices under construction to ensure that they are constructed in conformance with the SWPPP, all areas of disturbance that have not achieved final stabilization, all points of discharge to natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site, and all points of discharge from the construction site. 4. Review the SWPPP logbook on a periodic basis to ensure compliance and update as necessary. 5. When construction is complete, provide the Owner with a final site assessment verifying that the site has undergone final stabilization and met all requirements of the SWPPP and the General Permit. When the site has undergone final stabilization, prepare the eNOT and sign the “Final Stabilization” and “Post-Construction Stormwater Management Practice” certification statement. The eNOT must then be submitted electronically to the NYSDEC. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4, the owner or operator shall also have the MS4 sign the “MS4 Acceptance” statement on the eNOT. The owner or operator shall have the principal executive officer, ranking elected official, or duly authorized representative from the regulated, traditional land use control MS4, sign the “MS4 Acceptance” statement. The MS4 official, by signing this statement, has determined that it is acceptable for the owner or operator to submit the eNOT in accordance with the requirements of the general permit. The MS4 can make this determination by performing a final site inspection themselves or by accepting the qualified inspector’s final site inspection certification(s). 1.2 Participant Contact Information Owner/Operator Engineering Firm Contractor’s & Sub Contractors RISE Housing and Support Services 127 Union Street Saratoga Springs, NY 12866 Lansing Engineering, P.C. 2452 State Route 9, Suite 301 Malta, New York 12020 (518) 899-5243 TBD 2.0 Site Description This section briefly describes existing and proposed hydrologic and hydraulic conditions at and around the project site as they relate to surface water management planning considerations. Subsequent sections contain a description of the manner in which site runoff will be managed to minimize effects on areas adjacent to the site. PAGE 12 2.1 Location The proposed RISE – Finley Street Residential Site Plan is located on approximately 3.63 - acres of land located at 26 Finley Street in the City of Saratoga Springs, NY. The project site has a tax map number of 178.26-1-47. 2.1 Topography Existing site topography is rolling with slopes that can be classified as predominately moderate. Based on topographic survey information; the project site generally slopes toward the middle of the parcel. 2.3 Soils and Groundwater According to maps from the Natural Resources Conservation Service (NRCS) of Saratoga County, the onsite soils are classified as follows. • Windsor Loamy Sand, 0-3 percent slopes, WnA, – This deep somewhat excessively drained soil is formed by outwash plains, outwash deltas, and dunes. The permeability and erosion factor are high. (Hydrologic Soil Type A) Onsite soil tests were conducted on 3/21/25 by Lansing Engineering, PC. The tests included deep hole soil observations. The on-site soil tests indicated the site consisted of loamy sand consistent with the NRCS soil description of Hydrologic type A soils. The site exhibited consistent soil compositions across the entire site. As such, the entire site has been modeled as Hydrologic type A. A summary of the deep hole tests and locations is provided on the Existing Conditions Map included in Appendix B of this report. 2.4 Land Cover The existing land cover is predominantly wooded. 2.5 Wetlands The project contains no NYSDEC or ACOE regulated wetlands. 2.6 Surface Waters The project site does not contain any surface waters. 2.7 Rainfall Data Rainfall data utilized in the modeling and the analysis was obtained from a joint venture between the Northeast Regional Climate Center (NRCC) and the Natural Resources Conservation Service (NRCS) and can be found at the website: precip@cornell.edu. The data used is specific to this project and various 24- hour storm events are presented below. This data has also been used to create site specific Intensity- Duration-Frequency (IDF) curves that. PAGE 13 24-Hour Storm Event 24-hour rainfall 1 year 2.24 10 year 3.73 25 year 4.57 100 year 6.24 Data for the 90% average annual stormwater runoff volume (P) was obtained from Figure 4.1 of the “New York State Stormwater Management Design Manual” and is equal to one inch (1.15”). 2.8 Existing Land Use Existing land use consists of undeveloped wooded and grassed areas. There is an exiting auto garage and associated gravel driveway along the frontage of the parcel. 3.0 Permit Eligibility This section briefly describes the project’s GP-0-25-001 permit eligibility in regard to State Historic Preservation Office (OPRHP) and threatened and endangered species. 3.1 State Historic Preservation Office The project has received a letter from the OPRHP dated 02/26/25 stating that archaeological and/or historic resources will not be impacted by this project pursuant to Part I.A.4 of GP-0-25-001. This letter has been included in Appendix L of this report. 3.2 Threatened and Endangered Species The NYSDEC Environmental Assessment Form mapper has indicated that there is a potential for federal or NYS endangered or threatened species are present on-site. As such, a habitat study has been conducted by an environmental scientist at Gilbert VanGuilder Associates The habitat study concluded that the project will have no adverse impact on the potential threatened and endangered species. The habitat study is included in appendix K of this report. 4.0 Project Description The project proposes the construction of a 3-story, 25,555 sf footprint, 71 unit apartment building with associated parking areas, landscaping and utilities. Additionally, the project proposes the construction of a 3,000 sf office and community building to serve the proposed apartment. Access to the site will be provided via a single curb cut on Finley Street. Public water and sewer services will be provided via the City of Saratoga Springs. The anticipated impermeable surfaces include paved areas and the structure roof tops. Stormwater from the impermeable surfaces will be directed towards green infrastructure practices as well as a close drainage stormwater conveyance system and further to stormwater basins to the greatest extent possible. The stormwater from the basins will then be stored, treated and released and discharged via infiltration into the existing ground or towards existing drainage pathways on the project site. Storm events greater than the 100-year storm will be directed to discharge to and existing drainage corridor. The project design will ensure that the soils, wetlands and groundwater table will be protected. PAGE 14 Stormwater management areas will be constructed to treat and control stormwater runoff. The systems have been sized to ensure that adequate storage capacity exists to properly treat and store runoff associated with the 1, 10, 25, and 100 year design storm events. 5.0 Methodology This SWPPP utilizes several Stormwater Management Planning techniques and Green Infrastructure Practices. This approach to stormwater management emphasizes a holistic approach to resource protection, water quality treatment, flow volume control, maintenance cost reduction, and the dynamics of stormwater science. The primary goal is to reduce a site’s impact on the aquatic ecosystem using site planning techniques, runoff reduction techniques, and certain standard stormwater management practices. According to the most recent version of the New York State Stormwater Design Manual (NYSSDM), 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 the local scale, green infrastructure consists of site and neighborhood specific practices and runoff reduction techniques. When implemented throughout a development and watershed, green infrastructure can: reduce runoff volume, peak flow, and flow duration, slow down the flow to increase the time of concentration, improve groundwater recharge, protect downstream water resources, including wetlands, reduce downstream flooding and property damage, reduce incidence of combined sewer overflow, provide water quality improvements/reduced treatment costs, reduce thermal pollution, and improve wildlife habitat. The methodology for implementing green infrastructure techniques as well as designing the stormwater management and erosion and sedimentation control structures for this project is summarized as follows: The Six Step Process for Stormwater Site Planning and Practice Selection 1.0 Planning the site in accordance with local laws and ordinances to preserve natural resources, utilize site hydrology and reduce impervious cover. 2.0 Initial calculation of the water quality volume for the site. 3.0 Incorporation of green infrastructure techniques and standard stormwater management practices (SMPs) with Runoff Reduction Volume (RRv) capacity to reduce 100% of the WQv calculated in step 2. If this is not possible, an explanation as to why the green infrastructure techniques were not feasible and specific site limitations will be provided. 4.0 Determine the minimum Runoff Reduction Volume (RRv) required. 5.0 Use of standard SMPs, where applicable, to treat the portion of water quality volume not addressed by green infrastructure techniques and standard SMPs with RRv capacity, 6.0 Design of volume and peak rate control practices where required. 6.1 Evaluate the hydrologic condition of the tributary area using the USDA-SCS Technical Release No. 20 (June 1986) Methods. PAGE 15 6.2 Determine peak flows from each watershed, for various storm events, using the Autodesk Storm and Sanitary Analysis computer program. 6.3 Determine the water quality volume, channel protection volume, overbank flood protection volume and extreme storm flood protection volume for each drainage area that requires mitigation. Design the stormwater systems for each drainage area with structures that store and discharge the previously mentioned volumes at the required rates. 6.4 Perform stormwater system routings for the stormwater management using the Autodesk Storm and Sanitary Analysis computer program if necessary. Examine and compare the output for peak elevations and peak outflows for both pre and post- development conditions. 6.5 Design the stormwater system, in accordance with the "New York State Stormwater Management Design Manual", July 2024, prepared by the Maryland’s Center for Watershed Protection for the New York State Department of Environmental Conservation. 6.6 Design the erosion and sedimentation control structures, and prepare engineering calculations for the design of channels and conveyance piping in accordance with the "New York Standards and Specifications for Erosion and Sediment Control. 6.0 Process for Stormwater Site Planning and Practice Selection 6.1 Site Planning The first step in developing a comprehensive stormwater management plan using green infrastructure is to avoid or minimize land disturbance by preserving natural resources and utilizing the hydrology of the site. An existing conditions map was prepared identifying the natural resource areas and drainage patterns prior to designing the site layout. The map includes but is not limited to wetlands (state and federally regulated), waterways (major, perennial, intermittent, or springs), buffer areas (stream, wetland and forest), floodplains, forest, critical areas, topography, soils (hydrologic soil group, highly erodible soils, etc.), and significant geologic features including bedrock. This map is shown in Appendix B and addressed in the Erosion and Sediment Control Plan. Preservation of Natural Features Utilizing the Natural Resource Areas and Drainage Pattern Map, a strategy for protecting and enhancing natural resources was created. This strategy involves preserving natural features prior to site layout, utilizing natural features to preserve the natural hydrology, maintaining natural drainage design points, maximizing retention of forest cover and undisturbed soils, avoiding erodible soils on steep slopes and limiting mass grading of sites. Preservation of natural features includes techniques to foster the identification and preservation of natural areas that can be used in the protection of water, habitat and vegetative resources. The following planning practices to protect natural features have been considered and where possible, applied to the proposed development. PAGE 16 Preservation of Undisturbed Areas: Preservation of undisturbed areas has been utilized to the greatest extent possible given site constraints. Preservation of Buffers: Preservation of buffers have not been included and are incorporated into the project as the slope requirements for buffers cannot be met. Reduction of Clearing and Grading: Clearing shall be limited to only what is necessary for the construction of the buildings, parking lots and required stormwater management features. A limit of disturbance will be established based on the maximum disturbance zone for all development activities that considers equipment needs and construction techniques. Locating Development in Less Sensitive Areas: The project has been designed with the conscious effort to not impact any wetlands or buffers. Open Space Design: Due to the commercial nature of the project, clustering is not a viable option for the project. Preservation of natural areas has been maximized to the greatest extent possible. Soil Restoration: Soil restoration will be completed in areas that require extensive grading and will be performed during the construction phase of the project. According to the New York State Stormwater Design Manual, soil restoration is a required practice applied across areas of a development site where soils have been disturbed and will be vegetated in order to recover the original properties and porosity of the soil. Soil restoration is applied in the cleanup, restoration, and landscaping phase of construction followed by the permanent establishment of an appropriate, deep-rooted groundcover to help maintain the restored soil structure. A simple maintenance agreement will be included identifying where this technique has been applied and will be conserved and who is responsible. Soil restoration includes mechanical decompaction, compost amendment or both. The following table (from the New York State Stormwater Design Manual) describes various soil disturbance activities related to land development, soil types and the requirements for soil restoration for each activity. Soil Restoration Requirements Type of Soil Disturbance Soil Restoration Requirement Comments / Examples No Soil Disturbance Restoration not permitted Preservation of natural features Minimal soil disturbance Restoration not required Clearing and Grubbing Areas where topsoil is stripped only – no change in grade HSG A&B HSG C&D*** Protect area from any ongoing construction activities Apply 6 inches of topsoil Aerate*and apply 6” of topsoil Areas of cut or fill HSG A&B HSG C&D Aerate*and apply 6” of topsoil Apply full soil restoration** Heavy traffic areas on site (especially in a zone 5-25 feet around buildings but not within a 5 foot perimeter around foundation walls. Apply Full Soil Restoration (decompaction and compost enhancement) Areas where Runoff Reduction and/or infiltration practices are applied Restoration not required, but may be applied to enhance the reduction specified for appropriate practices Keep construction equipment from crossing these areas. To protect newly installed practice from any ongoing construction activities construct a single phase operation fence area PAGE 17 Redevelopment projects Soil restoration is required on redevelopment projects in areas where existing impervious area will be converted to pervious area. *Aeration includes the use of machines such as tractor -drawn implements with coulters making a narrow slit in the soil, a roller with many spikes making indentations in the soil, or prongs which function like a mini-subsoiler. ** “Please see Deep Ripping and De-compaction, DEC 2008” which is found in Appendix K. *** This project is situated on D type soils (HSG = hydrologic soil group) Soil restoration will help return the soil to its original state prior to development. This planning technique will increase rainwater absorption therefore increasing temporary water storage in the soil, filtering out water pollutants, reducing stormwater runoff through infiltration and evapotranspiration and promoting healthy plant growth with a reduced need for irrigation, pesticides and fertilizers. Reduction of Impervious Cover The next step is to reduce the impacts of the development by reducing the impervious cover. This strategy involves reducing roadways, sidewalks, driveways, cul-de-sacs, building footprints and parking areas. Impervious surfaces can significantly disrupt the natural rhythm of the hydrologic cycle. Since they do not allow stormwater to percolate into the soil, infiltration, evapotranspiration and groundwater recharge is decreased. These surfaces also increase the rate at which runoff and associated pollutants are conveyed to the nearest water body, which can compromise water quality and may result in a higher frequency of flooding and accelerated stream erosion. The following planning practices to reduce impervious cover have been considered and where possible, applied to the proposed development. Roadway Reduction: Access roadways for this project have been reduced to the minimum extent possible while still allowing for pedestrian circulation and meeting the International Fire Code. Sidewalk Reduction: Sidewalk reduction has been implemented to the greatest extent possible while allowing for access between parking and amenity areas and proposed egress points. Driveway Reduction: This practice has been implemented as the proposed access driveways have been reduced to what is necessary to function. Building Reduction: This practice of reducing the building footprint was utilized to reduce the area of the building to the maximum extent possible while still making the project feasible. The apartment building have been designed to be as efficient with space as possible while still achieving the required use needs. Parking Reduction: Parking Reduction and the use of banked parking has been utilized for the project while still meeting the parking requirements of the Saratoga Springs UDO code. By protecting natural resources and utilizing the hydrology of the site, every attempt has been made to preserve the natural conditions of the site, minimize runoff and maintain the preconstruction hydrology. Careful consideration has been made to preserve undisturbed areas and buffers, reduce clearing and grading, locate development in less sensitive areas, and restore soils. The proposed project has minimal impervious area for a project of this size and use. Impervious areas are limited to building, driveway and access roads. All reasonable opportunities for preserving natural PAGE 18 conditions of the site have been employed by the project to preserve the natural conditions of the site to minimize the runoff and maintain the pre-construction hydrology. 6.2 Determine the Water Quality Volume and Minimum Reduction Volume The entire parcel has an area of approximately 3.63 acres, however portions of the project will remain untouched and as such will not be included within the total project area. The total project area is approximately 2.57 acres, of which approximately 1.79 will be impervious development. Following a review of existing topography and site conditions, five (5) drainage areas and five (5) distinct design points has been defined for the subject site and the stormwater management analysis. A detailed description of these design points can be found in section 7.1 & 7.2 of this report. The water quality volume (WQv) and Minimum Reduction Volume for the project have been calculated as follows: Water Quality Volume: WQv = P x Rv x A 12 Where: Rv = 0.05 +0.009(I); I = percent impervious P (inch) = 90% Rainfall Event A = Site Area WQv = 1.15 x 0.48 x 2.57= 0.167 ac-ft 12 The Water Quality Volume for the project is 0.167ac-ft or 7,274 cf of stormwater. Minimum RRv required: RRv = P × Rv × S × A 12 Where: P = 90% rainfall event (inches) Rv = 0.05+0.009(I) where I is 100% impervious S = Soil Factor (weighted average of all soils) A = Total New Impervious Area Minimum RRv required = (1.15 × 0.95 × 0.55 × 1.79) =0.09 ac-ft 12 Minimum RRv required = 0.09 acre-feet 6.3 Runoff Reduction by Applying Green Infrastructure Techniques and Standard SMPs with RRv Capacity The Runoff Reduction Volume (RRv) results in a reduction of the total WQv through implementation of green infrastructure techniques. Runoff reduction shall be achieved by infiltration, groundwater recharge, reuse, recycle, evaporation/transpiration of 100 percent of the post development water quality volumes to replicate pre-development hydrology by maintaining pre-construction infiltration, peak runoff flow, discharge volume, as well as minimizing concentrated flow by using runoff control techniques to provide treatment in a distributed manner before runoff reaches the collection system. Green PAGE 19 infrastructure techniques shall be employed to reduce the required WQv. Green infrastructure techniques are grouped into two categories. They include: • Practices resulting in a reduction of contributing area, and • Practices resulting in a reduction of contributing volume All of the green infrastructure planning and design options have been evaluated to determine the feasibility of the runoff reduction option for use on the project site. If the option is not feasible for the project site, a description has been provided indicating why the green infrastructure option was not feasible. Implementation of green infrastructure cannot be considered infeasible unless physical constraints, hydraulic conditions, soil testing, existing and proposed slopes (detailed contour), or other existing technical limitations are objectively documented. The following chart (from the NYSSSDM) outlines the green infrastructure techniques that are acceptable for runoff reduction that must be evaluated for feasibility for the project. Green Infrastructure Techniques Acceptable for Runoff Reduction Group Practice Description Runoff Reduction Techniques Conservation of natural areas Retain the pre-development hydrologic and water quality characteristics of undisturbed natural areas, stream and wetland buffers by restoring and/or permanently conserving these areas on a site. Sheetflow to riparian buffers or filter strips Undisturbed natural areas such as forested conservation areas and stream buffers or vegetated filter strips and riparian buffers can be used to treat and control stormwater runoff from some areas of a development project. Vegetated open swale The natural drainage paths, or properly designed vegetated channels, can be used instead of constructing underground storm sewers or concrete open channels to increase time of concentration, reduce the peak discharge, and provide infiltration Tree planting/tree box Plant or conserve trees to reduce stormwater runoff, increase nutrient uptake, and provide bank stabilization. Trees can be used for applications such as landscaping, stormwater management practice areas, conservation areas and erosion and sediment control. Disconnection of rooftop runoff Direct runoff from residential rooftop areas and upland overland runoff flow to designated pervious areas to reduce runoff volumes and rates. Stream daylighting for redevelopment projects Stream daylight previously culverted / piped streams to restore natural habitats, better attenuate runoff by increasing the storage size, promoting infiltration, and help reduce pollutant loads. Rain Garden Manage and treat small volumes of stormwater runoff using a conditioned planting soil bed and planting materials to filter runoff stored within a shallow depression. Green roof Capture runoff by a layer of vegetation and soil installed atop a conventional flat or sloped roof. The rooftop vegetation allows evaporation and evapotransporation processes to reduce volume and discharge rate of runoff entering conveyance system. Stormwater planter Small landscaped stormwater treatment devices that can be designed as infiltration or filtering practices. Stormwater planters use soil infiltration and biogeochemical processes to decrease stormwater quantity and improve water quality Rain tank / Cistern Capture and store stormwater runoff to be used for irrigation systems or filtered and reused for non-contact activities Porous Pavement Pervious types of pavements that provide an alternative to conventional paved surfaces, designed to infiltrate rainfall through the surface, PAGE 20 thereby reducing stormwater runoff from a site and providing some pollutant uptake in the underlying soils. 6.4 Runoff Reduction Technique Evaluation The runoff reduction techniques offered in the NYSDEC Stormwater Design Manual have been reviewed to determine the suitability of the site for use. The feasible runoff reduction practices are shown in the project plans. Additionally, a summary of the individual runoff reduction and total runoff reduction volume and the impact it will have on the total WQv is included after the description and evaluation of each practice. Conservation of Natural Areas: A total of .54 acres of conservation area have been proposed in the rear of the parcel. Sheet Flow to Riparian Buffers or Filter Strips: This green infrastructure practice helps treat and control stormwater runoff from developed areas. Providing sheet flow to filter strips will promote groundwater recharge, reduce pollutant loading, increase infiltration and help to maintain pre- and post-hydrologic conditions. Filter strips have not been proposed as the proposed project does not allow for the required minimum filter strip width, and no riparian buffers exist. Vegetated Swale: According to the New York State Stormwater Design Manual, a vegetative swale is a maintained, turf lined swale specifically designed to convey stormwater at a low velocity, promoting natural treatment and infiltration. Where drainage area, topography, soils, slope and safety issues permit, vegetated swales can be used in the street right-of-way and on developed sites to convey and treat stormwater from roadways and other impervious surfaces. Vegetated swales have been proposed for this project to convey stormwater. However, no green infrastructure credit has been accounted for by this practice as other green infrastructure practices have been utilized. Tree Planting / Tree Pit: A combination of new tree planting and conservation of existing trees shall be utilized by the project. This practice helps to reduce stormwater runoff through rainfall interception and evapotranspiration. Other benefits include providing wildlife habitat, promoting shade, creating natural buffers, increasing nutrient uptake, and aiding infiltration. Tree Plantings have not been included in the green infrastructure calculations as other green practices have been utilized. Disconnection of Rooftop Runoff: Disconnection of Rooftop Runoff will not be proposed for this project due to the feasibility and size of the commercial buildings being proposed. Stream Daylighting: The stream daylighting technique is typically used for retrofit or redevelopment projects and therefore is not applicable to this project. Rain Gardens: According to the New York State Stormwater Design Manual, the rain garden is a stormwater management practice intended to manage and treat small volumes of stormwater runoff from impervious surfaces using a conditioned planting soil bed and planting materials to filter runoff stored within a shallow depression. This practice is most commonly used in residential land use settings and is appropriate for townhomes and single-family homes. Rain gardens have not been proposed for this project due to the commercial nature of the project. Green Roofs: Green roofs are not considered to be feasible for the project based upon structural requirements that would be imposed upon the proposed building and due to safety concerns for the PAGE 21 future owners / tenants. Also, extreme weather and potential heavy snow loads during winter months make this practice undesirable. Stormwater Planters: According to the New York State Stormwater Design Manual, stormwater planters, much like rain gardens, use soil infiltration and biogeochemical processes to decrease stormwater quantity and improve stormwater quality. Stormwater planters have not been proposed for this project as other green infrastructure techniques have been utilized. Rain Barrels and Cisterns: Rain barrels and cisterns have not been proposed for this project as other green infrastructure techniques have been utilized. Porous Pavement: According to the New York State Stormwater Design Manual, porous pavement provides an alternative to conventional paved surfaces. It is designed to infiltrate rainfall directly through the surface, thereby reducing stormwater runoff. In addition, porous pavement provides some pollutant uptake in the underlying soils thus improving the water quality. Porous pavement has not been proposed for this project as other green infrastructure practices have been implemented. Bio-retention infiltration: According to the New York State Stormwater Design Manual, bio-retention is a stormwater management practice intended to manage and treat stormwater runoff from impervious surfaces using a conditioned planting soil bed and planting materials to filter runoff stored within a shallow depression. This practice is most commonly used in residential and commercial land use settings and is appropriate for townhomes, parking lots and commercial buildings. A Bio-retention area has not been proposed for this project due to site area constraints. The required WQv that shall be treated for the project is calculated in Section 6.2 and is approximately .167 ac-ft or 7,295 cf of stormwater for the project. The required minimum runoff reduction requirements have been calculated in Section 6.2 and is approximately 0.09 ac-ft. The proposed runoff reduction volumes utilizing green infrastructure techniques have been calculated and are shown in Appendix D at the end of this report. A summary of the calculation results are as follows: The original WQv= 0.167 ac-ft The minimum required RRv = 0.09 ac-ft Area Reduction Practices Conservation of natural areas= 0.54 ac Riparian buffers / filter strips = 0.00 ac Tree Planting/tree preservation= 0.00 ac Total Area Reduction= 0.00 ac Runoff Reduction volume= 0.00 ac-ft Practices with RRv Capacity Rooftop Disconnection N/A Infiltration .166 Porous Pavement N/A Vegetated Swales N/A Green Roof N/A Rain Garden N/A Stormwater Planters N/A Cisterns/Rain Barrels N/A PAGE 22 Bioretention Infiltration N/A Infiltration Trenches N/A Runoff Reduction volume= 0.0.00 ac-ft Total Runoff Reduction Volume 0.09 ac-ft Total WQv Reduced 0.223 ac-ft Total WQv Treated 0.223 ac-ft Total WQv to be Treated by Standard Practices 0.00 ac-ft The total runoff reduction volume of 0.167 ac-ft for the project site is equal to the required water quality volume 0.163 ac-ft. Approximately 100.00% of the water quality volume has been reduced using green infrastructure practices. 6.5 Standard Stormwater Management Practices to Treat Water quality Volume not Addressed by Green Infrastructure Techniques All the green infrastructure practices have been evaluated and included in the design where possible. The RRv requirement has been satisfied and the SWPPP complies with the required sizing criteria. A description of the stormwater management basin is included in Section 7.3. 7.0 Hydrologic and Hydraulic Analysis The amount of stormwater runoff generated from the subject parcels after development is completed should not be greater than the stormwater runoff generated prior to development. To ensure the pre- development stormwater discharge is less than or equal to post-development stormwater discharge, the 1- year, 10-year, 25-year and 100-year storm events were considered for the design of the stormwater management plan. The first step in completing the watershed model is to determine the contributing drainage areas for both the pre-development and post-development conditions. The times of concentration and runoff curve numbers (CN) were then calculated for each watershed area. This data was then entered into the HydroCAD computer program. HydroCAD, developed by Applied Microcomputer Systems of Chocorua, New Hampshire, is a Computer-Aided-Design (CAD) program for analyzing the hydrologic and hydraulic characteristics of a given watershed and associated stormwater management facilities. HydroCAD is used to calculate peak runoff flows and to create hydrographs for the four storms evaluated for both pre-development and post development conditions. 7.1 Existing Pre-Development Conditions Following a review of existing topography and site conditions, five (5) subcatchments and five (5) design points has been identified for the subject site and the stormwater management analysis. The analysis area includes the existing parcel as well as off site contributing areas. The total area used for existing conditions runoff calculations is 3.97 acres. Design Point 1 is located in the northastern portion of the site and consists of a lowpoint behind the existing garage and gravel area. Design point 1 takes runoff from subcatchment 1 which has an area of approximately 1.84 acres and consists of grassed, wooded and impervious area. The adjacent commercial PAGE 23 building occupied by Winsupply currently has roof scuppers that drain onto the project site, as such the entire rooftop has been taken into consideration. Design point 2 is located in the northwest portion of the project site, where the site gently slopes towards the adjacent subdivision to the west. Design point 2 takes runoff from subcatchment 2 which has an area of approximately 0.49 acres and consists of wooded areas. Runoff from subcatchment 2 flows overland through the wooded areas to the western boundary of the site. Design point 3 is a low point located in the south western portion of the site. Design point 3 takes runoff from subcatchment 3 which has an area of approximately 1.03 acres and consists of wooded areas. Runoff from subcatchment 3 flows overland through the wooded areas to the lowpoint. Design point 4 is a low point located in the southern portion of the site. Design point 4 takes runoff from subcatchment 4 which has an area of approximately 0.35 acres and consists of wooded areas. Runoff from subcatchment 4 flows overland through the wooded areas to the lowpoint. Design point 5 is a low point located in the southeastern portion of the site. Design point 5 takes runoff from subcatchment 5 which has an area of approximately 0.26 acres and consists of wooded areas. Runoff from subcatchment 5 flows overland through the wooded areas to the lowpoint. 7.2 Proposed Post-Development Watershed Conditions Under proposed conditions, the Design Points remains in the same general location, the adjacent rooftop will be connected directly to the municipal infrastructure. The post-development stormwater analysis includes the identified subcatchments. Subcatchment (1A) encompasses approximately 0.94 acres located in the northern portion of the project area. This subcatchment includes grass and impervious surfaces from development. Stormwater originating from Subcatchment 1A will flow overland where it will be collected by the closed drainage system and conveyed to Subsurface Stormwater Basin #1 where it will be infiltrated. Design Point 1 can be defined as Stormwater Basin #1. Subcatchment (2A) encompasses approximately 0.12 acres located in the northwestern portion of the parcrel. This subcatchment includes woods and grass areas not treated by a stormwater practice. Stormwater originating from Subcatchment 2A will flow overland towards the western property line that can be defined as Design Point 2. Subcatchment (3A) encompasses approximately 1.80 acres located in the center of the developed portions of the site. This subcatchment includes grass, parking lot, and rooftops for the proposed apartment building. Stormwater originating from Subcatchment 3A will flow overland to the lowpoint in the southwestern portion of the property that can be defined as Design Point 3. Subcatchment (3B) encompasses approximately 0.40 acres located in the southern portion of the site. This subcatchment includes grassed and wooded areas. Stormwater originating from Subcatchment 4A will flow overland to the south at a low point that can be defined as Design Point 4. Subcatchment (4A) encompasses approximately 0.24 acres located in the southern portion of the site. This subcatchment includes grassed and wooded areas. Stormwater originating from Subcatchment 4A will flow overland to the south at a low point that can be defined as Design Point 4. PAGE 24 Subcatchment (5A) encompasses approximately 0.14 acres located in the southeastern portion of the site. This subcatchment includes grassed and wooded areas. Stormwater originating from Subcatchment 5A will flow overland to the southeast at a low point that can be defined as Design Point 5. The pre-development and post-development peak discharge rates at the identified Design Points for the 1, 10, 25, and 100-year storms prior to mitigation are as follows: 1-YR 10-YR 25-YR 100-YR PRE-DEVELOPMENT cfs cfs cfs cfs DESIGN POINT 1 0.02 .54 1.16 2.74 DESIGN POINT 2 0.00 0.00 0.03 0.19 DESIGN POINT 3 0.00 0.00 0.01 0.12 DESIGN POINT 4 0.00 0.00 0.00 0.04 DESIGN POINT 5 0.00 0.00 0.00 0.00 POST-DEVELOPMENT Cfs cfs cfs cfs DESIGN POINT 1 0.05 .65 1.13 2.24 DESIGN POINT 2 0.00 0.00 0.00 0.03 DESIGN POINT 3 0.99 2.96 4.16 6.69 DESIGN POINT 4 0.00 0.00 0.00 0.04 DESIGN POINT 5 0.00 0.00 0.00 0.00 These post development volume and discharge values represent the post development condition without any designed stormwater management areas in relation to existing conditions. The post-development stormwater discharge must be mitigated. 7.3 Proposed Water Quantity and Quality Controls The post development runoff rates for the developed site are higher than the pre-development rates; therefore, mitigation is required to properly regulate post development runoff. The area that the post- development hydrograph exceeds the pre-development hydrograph equals the volume of water that needs to be mitigated by implementing stormwater management basins. The proposed stormwater management system for this site has been designed with provisions to store and treat the water quality volume, channel protection volume, overbank flood protection volume and extreme storm flood protection volume for the developed portions of the project parcel. The proposed stormwater management systems have been included with the proposed development considering various site constraints and the City of Saratoga Springs regulations. Subsurface Infiltration System #1 Subsurface Infiltration System #1 is located in the northern portion of the developed site. This system collects and treats the stormwater from approximately 0.94-acres of the developed portions of the site before infiltrating. The infiltration system has been designed with an invert or bottom of system elevation of 306.42 which will provide in excess of 2’ of separation between the bottom of the infiltration practice and groundwater as found from onsite deep-hole observations. Infiltration rates in the vicinity of this practice have been observed to be between 10.5 and 13.5 inches/hour. However, subsurface infiltration system #1 has been conservatively modeled at 5 inches/hour. PAGE 25 The water quality volume (WQv) is designed to improve water quality sizing to capture and treat 90% of the average annual stormwater runoff volume. The water quality volume is directly related to the amount of impervious cover created at a site. The water quality volume is 0.035 ac-ft for Subsurface Infiltration System #1. Stormwater will be pretreated by the incorporation of a Stormkeeper Sediment Strip by Lane Enterprises, Inc. The Stormkeeper Sediment Strip has been approved for use by the New Jersey Corporation of Advanced Technologies (NJCAT). Storm events up to and including the 1-year storm will be directed to the sediment strip. Storm events in excess of the 1-year storm event will flow into the rest of the infiltration system. Sizing calculations for the sediment strip can be found in appendix D of this report. The stream channel protection volume requirements are designed to protect stream channels from erosion. In New York State this goal is accomplished by providing 24-hour extended detention of the one- year, 24-hour storm event. The stream channel protection volume is 0.02 ac-ft for the system. The entire stream channel protection volume will be stored and infiltrated by the Subsurface Infiltration System #1. The primary purpose of the overbank flood control sizing is to prevent an increase in the frequency and magnitude of out-of-bank flooding generated by urban development. Overbank control requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate to pre-development rates. The overbank flood control volume is 0.03 ac-ft for the subsurface system. The system is designed to store in excess of the overbank flood control volume. The intent of the extreme flood criterion is to prevent the increased risk of flood damage from large storm events, maintain the boundaries of the pre-development 100-year floodplain and protect the physical integrity of stormwater management practices. Extreme flood protection requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate to pre-development rates. The extreme flood protection volume is 0.09 ac-ft for the subsurface system. The system is designed to meet the required extreme flood criterion. A rating table (stage/storage/discharge) was then developed for the proposed subsurface system based on the geometry of the system, characteristics of the water quality volume, channel protection volume, overbank flood protection volume and extreme storm flood protection volume for each drainage area. Subsurface Infiltration System #1: Peak Inflows Peak Infiltration High Water Elevation Freeboard Q1 = 0.04 cfs Q1 = 0.04 cfs 305.93’ 4.67’ Q10 = 0.65 cfs Q10 = 0.19 cfs 306.70’ 3.90’ Q25 = 1.17 cfs Q10 = 0.19 cfs 307.38’ 3.22’ Q100 = 2.37 cfs Q100 = 0.19 cfs 309.38’ 1.22’ -Bottom of Stone = 306.42’; Bottom of Pipe/Chamber = 306.92’; Top of Chamber = 309.42’; Top of Stone = 309.92; lowest rim elevation = 310.60’ Subsurface Infiltration System #2 Subsurface Infiltration System #2 is located in the southern portion of the developed site. This system collects and treats the stormwater from approximately 2.00-acres of the developed portions of the site before infiltrating. The infiltration system has been designed with an invert or bottom of system elevation of 307.00 which will provide in excess of 2’ of separation between the bottom of the infiltration practice and groundwater as found from onsite deep-hole observations. Infiltration rates in the vicinity of this PAGE 26 practice have been observed to be between 16 and 32 inches/hour. However, subsurface infiltration system #1 has been conservatively modeled at 7 inches/hour. The water quality volume (WQv) is designed to improve water quality sizing to capture and treat 90% of the average annual stormwater runoff volume. The water quality volume is directly related to the amount of impervious cover created at a site. The water quality volume is 0.127 ac-ft for Subsurface Infiltration System #1. Stormwater will be pretreated by the incorporation of a Stormkeeper Sediment Strip by Lane Enterprises, Inc. The Stormkeeper Sediment Strip has been approved for use by the New Jersey Corporation of Advanced Technologies (NJCAT). Storm events up to and including the 1-year storm will be directed to the sediment strip. Storm events in excess of the 1-year storm event will flow into the rest of the infiltration system. Sizing calculations for the sediment strip can be found in appendix D of this report. The stream channel protection volume requirements are designed to protect stream channels from erosion. In New York State this goal is accomplished by providing 24-hour extended detention of the one- year, 24-hour storm event. The stream channel protection volume is 0.06 ac-ft for the system. The entire stream channel protection volume will be stored and infiltrated by the Subsurface Infiltration System #1. The primary purpose of the overbank flood control sizing is to prevent an increase in the frequency and magnitude of out-of-bank flooding generated by urban development. Overbank control requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate to pre-development rates. The overbank flood control volume is 0.17 ac-ft for the subsurface system. The system is designed to store in excess of the overbank flood control volume. The intent of the extreme flood criterion is to prevent the increased risk of flood damage from large storm events, maintain the boundaries of the pre-development 100-year floodplain and protect the physical integrity of stormwater management practices. Extreme flood protection requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate to pre-development rates. The extreme flood protection volume is 0.08 ac-ft for the subsurface system. The system is designed to meet the required extreme flood criterion. A rating table (stage/storage/discharge) was then developed for the proposed subsurface system based on the geometry of the system, characteristics of the water quality volume, channel protection volume, overbank flood protection volume and extreme storm flood protection volume for each drainage area. Subsurface Infiltration System #2: Peak Inflows Peak Infiltration High Water Elevation Freeboard Q1 = 2.22 cfs Q1 = 0.59 cfs 307.85’ 7.33’ Q10 = 5.23 cfs Q10 = 0.59 cfs 309.41’ 6.77’ Q25 = 6.89 cfs Q10 = 0.59 cfs 310.45’ 4.73’ Q100 = 10.24 cfs Q100 = 0.59 cfs 313.63’ 1.55’ -Bottom of Stone = 307.00’; Bottom of Chamber = 3 08.00’; Top of Chamber = 313.00’; Top of Stone = 314.00; lowest rim elevation = 315.18’ PAGE 27 The proposed stormwater flows will not adversely affect the downstream receiving waters. A comparison of pre-and post-development discharge after installation of mitigation is shown below: 1-YR 10-YR 25-YR 100-YR PRE-DEVELOPMENT cfs cfs cfs cfs DESIGN POINT 1 0.02 0.54 1.16 2.74 DESIGN POINT 2 0.00 0.00 0.03 0.19 DESIGN POINT 3 0.00 0.00 0.01 0.12 DESIGN POINT 4 0.00 0.00 0.00 0.04 DESIGN POINT 5 0.00 0.00 0.00 0.03 POST-DEVELOPMENT Cfs cfs cfs cfs DESIGN POINT 1 0.00 0.00 0.00 0.00 DESIGN POINT 2 0.00 0.00 0.00 0.03 DESIGN POINT 3 0.00 0.00 0.00 0.05 DESIGN POINT 4 0.00 0.00 0.00 0.03 DESIGN POINT 5 0.00 0.00 0.00 0.02 Post development peak stormwater discharge is less than or equal to pre-development peak stormwater discharge for all storm events analyzed. The stormwater management systems have been sized to provide sufficient capacity to treat up to and including the 100-year storm event. Emergency overflows have been included in the design to release storms greater than the 100-year storm. The excess stormwater from these extremely rare events will flow through the overflow and overland to the existing drainage course. 8.0 Climate Change Considerations This section describes the design considerations associated with this project in respect to climate change. 8.1 Physical Risks Due to Climate Change This project has taken steps to limit the physical risks due to climate change into account through site planning, location, elevation, and sizing of the stormwater systems. The following provides greater details on how each of the preceding items has been considered with respect to climate change: Overall Site Planning: • Increasing Temperature: The overall site plan has been designed to limit the potential impacts of increasing temperature by limiting the impervious surfaces to only what is necessary for the project to remain functional. This will reduce the heat-island effect for the overall site. • Increasing Precipitation: The overall site plan has been designed to limit the effects of possible future increasing precipitation by providing positive drainage away from all proposed buildings and structures. Additionally, impervious surfaces have been limited to only what is necessary for the project to remain functional. PAGE 28 • Increasing Variability in Precipitation, including chance of draught: The overall site plan has been designed to limit the possible effects of variability in precipitation, including the chance of draught by ensuring proper drainage and incorporating drought resistant plantings where appropriate. • Increasing frequency and severity of flooding: The overall site plan has been designed to limit the possible effects of increasing frequency and severity of flooding by ensuring key features of the project such as buildings and access points are out of the flood plain. Stormwater management systems have also been designed with excess capacity. • Rising Sea Level: The overall site plan will not be affected by the potential rise in sea levels as the project is situated well above projected sea level increases. • Increase in Storm Surge: The overall site plan will not be affected by the possible increase in storm surge as the project is not located near a large enough body of water that could produce a storm surge. • Shifting Ecology: The overall project site plan has been evaluated and protects against the potential for shifting ecology by locating the development in less sensitive areas and preserving natural features to the greatest extent possible. Location, Elevation, and Sizing of Control Measures and Practices, Conveyance Systems, and Detention Systems: • Increasing Temperature: Location, elevation, and sizing of control measures and practices, conveyance systems, and detention systems have been designed to limit the potential impacts of increasing temperature by designing these systems and components in a manner that promotes infiltration to the greatest extent possible. This process will then reduce the evaporation on site due to potential increases in temperature. • Increasing Precipitation: Location, elevation, and sizing of control measures and practices, conveyance systems, and detention systems have been designed to limit the effects of possible future increasing precipitation by providing additional capacity on the systems and components as well as overflow contingencies should any of the systems become overwhelmed. • Increasing Variability in Precipitation, including chance of draught: Location, elevation, and sizing of control measures and practices, conveyance systems, and detention systems have been designed designed to limit the possible effects of variability in precipitation, including the chance of draught by promoting infiltration conveyance systems and drought resistant plantings with deep roots to the greatest extent possible. • Increasing frequency and severity of flooding: Location, elevation, and sizing of control measures and practices, conveyance systems, and detention systems have been designed to limit the possible effects of increasing frequency and severity of flooding by ensuring the site includes overflow contingencies for extreme storm events as well as locating the storm system components above any flood plain. PAGE 29 • Rising Sea Level: Location, elevation, and sizing of control measures and practices, conveyance systems, and detention systems will not be affected by the potential rise in sea levels as the project is situated well above projected sea level increases. • Increase in Storm Surge: Location, elevation, and sizing of control measures and practices, conveyance systems, and detention systems will not be affected by the possible increase in storm surge as the project is not located near a large enough body of water that could produce a storm surge. • Shifting Ecology: Location, elevation, and sizing of control measures and practices, conveyance systems, and detention systems has been designed to protect against the potential for shifting ecology by locating the storm system components in less sensitive areas while incorporating natural features to the greatest extent possible. 9.0 Permanent Stormwater Management System Features This section describes the permanent features of the Stormwater Management System for proposed development, including storm sewer piping and stormwater basins. In all instances, the structures associated with the stormwater management system have been sized to accommodate peak flows from the 10-year design storm event. See the Construction Plans for the location, size, quantity and details of the permanent stormwater management features. 9.1 Conveyance Piping Storm runoff from developed areas will be conveyed to the stormwater basin by means of storm sewers. In general, piping is designed such that: ● All conveyance piping is sized to accommodate the peak flow from the 10-year 24-hour design storm. ● Flow capacity is sufficient to convey runoff to the receiving basin or ditch without overflowing the ditch or drop inlet at the entrance of the culvert. ● All storm drainage pipes are designed such that the projected velocities from the design storm are greater than three feet per second, and ● Strength is sufficient to withstand the soil cover and vehicle loads. 9.2 Stormwater Management System The following design criteria shall apply to the design of storm drainage facilities: • All storm drainage facilities shall be designed based on a ten-year (10) storm frequency. • Peak runoff rates from the project site after development shall not exceed pre-development peak runoff rates. PAGE 30 • Adequate storage facilities shall be provided for the site to store the additional runoff volume due to development of the project site for a ten-year, twenty-five-year and one-hundred-year storm frequency. • Provisions, such as overflow studies shall be made for protection against property damage and loss of life for more severe storms (100-year storm). 10.0 Stormwater Erosion and Sediment Controls Several types of permanent and temporary storm water pollutant controls are required to be installed and implemented pre-construction, during construction and post-construction as shown on the Construction Plans and per the NYSDEC SPDES General Permit. Guidelines and recommendations can be found in the “New York Standards and Specifications for Urban Erosion and Sediment Control.” The permanent storm water management system has been designed to accommodate peak storm flows utilizing drainage ditches, conveyance channels, piping and a stormwater management basin. These permanent features should be installed and constructed as shown on the Construction Plans. Selection of temporary storm water controls will be on an “as needed basis” and will depend on the specific conditions of the site. Since site characteristics can change significantly during construction, it is important to monitor the site regularly to ensure the proper selection and implementation of the necessary controls. These controls include, but are not limited to silt fence, drainage swales, check dams, hay bales, stone construction entrances, sediment traps and seed and mulch. 10.1 Erosion and Sediment Controls Temporary Stabilization Silt fences, drainage swales, check dams, stabilized stone construction entrances, sediment traps and seed and mulch and other controls will be utilized as temporary surface water management features. Silt fence will be used as necessary to reduce the sediment load in the receiving drainage ditches. In addition, silt fencing will be placed on the downslope sides of all disturbed areas (5 ft.) from the toe of the slope until more permanent drainage and erosion control structures are established. Check dams will be placed along the permanent drainage ditches in which vegetation is being established. Stone check dams will be placed in ditches to control flow velocity and reduce sedimentation. See the Construction Plans for the location, size, quantity, and details of the temporary stormwater management features. Steep slopes and exposed soils should be stabilized with silt fences, mulching blankets, geotextiles, geosynthetic drainage netting, seed and mulch, or any other stabilization measure shall be used that will significantly reduce the risk of erosion. Stabilization measures must be initiated by the end of the next business day and completed within fourteen (14) days from the date of the current soil disturbance activity ceased. Permanent Stabilization Permanent stormwater management features as described above include drainage ditches, conveyance channels, piping and stormwater management basin. In all instances, the structures associated with the stormwater management system have been sized to accommodate peak flows from the appropriate storm events as required by the City of Saratoga Springs. All lawns, basins and swales will be permanently seeded and mulched and maintained as necessary to prevent overgrowth. PAGE 31 10.2 Other Pollutant Controls Paints and Solvents During construction, temporary structures such as construction trailers may be moved on site to store items such as paints, solvents and gasoline pertinent to the continuation of construction activities. The intention of these structures is to shelter potential contaminants from stormwater and reduce the potential of toxic chemicals from entering the stormwater runoff due to construction activities. Solvents and detergents may be stored on-site that will be used for regular cleaning and maintenance of construction vehicles or temporary structures. Solvents shall be used in cleaning machinery pursuant to 6 NYCRR Part 750. After use, solvents shall be disposed of in approved containers and removed from site at scheduled intervals. Vehicle wash water that contains detergents must be disposed of into the sanitary sewer. Fuels Fuel for construction equipment shall either be obtained from a licensed distributor of petroleum products or from an approved above ground storage tank on site. A distributor may be contracted to arrive on site periodically and fill all equipment as necessary. All distributors of petroleum products must have adequate liability insurance to mitigate and clean up any spills that occur on site as well as obtain appropriate permits and licenses from the NYSDEC. All above ground storage tanks with a combined capacity of 1,100 gallons shall be installed pursuant to 6 NYCRR Part 614 Standards for New and Substantially Modified Petroleum Storage Facilities. Fuel from construction vehicles may come into contact with stormwater when vehicles are stored outside. Good housekeeping and preventative maintenance procedures shall be implemented to ensure fuel spills and leaks are minimized during refueling and storage. Any small-scale fuel or oil spills must be remedied immediately, and contaminated soils shall be disposed of appropriately. The designated spill prevention and response team shall handle large-scale gasoline spills. Oil and other petroleum products may be stored on site in limited quantities to ensure the continued operation of construction equipment in the event a scheduled delivery is unavailable. Items shall be stored in their original containers within temporary structures and shall not be exposed to stormwater. Used oil and petroleum products shall be stored in approved containers until recycled or disposed of at an approved disposal facility. Temporary Facilities Temporary sanitary facilities may be located on site for construction workers. This facility shall be in an accessible and visible location. Such a facility shall be leak and tip proof. A waste management company may be contracted to arrive on site and provide the routine pumping and sanitization of the facility. Such a company shall have adequate liability insurance to mitigate and clean up any spills that occur on site as well as appropriate permits and licenses from the NYSDEC. Dust Control Construction traffic must enter and exit the site at the stabilized construction entrance. The purpose is to trap dust and mud that would otherwise be carried off-site by construction traffic. Water trucks will be used as needed during construction to reduce dust generated on the site. Dust control must be provided PAGE 32 by the General Contractor to a degree that is acceptable to the Owner, and in compliance with applicable local and state dust control regulations. Solid Waste No solid materials, including building materials and concrete washout wastewater, are allowed to be discharged from the site with storm water. All solid waste, including disposable materials incidental to the major construction activities, must be collected and placed in containers. The containers will be emptied periodically by a contract trash disposal service and hauled away from the site. Thermal Pollution Stormwater that meets roadways, driveways, parking lots or other impermeable surfaces may increase in temperature during warm weather. If stormwater is discharged into surface water bodies, the temperature of the water body may also increase, potentially threatening plant and animal species sensitive to temperature changes as well as providing an environment that may cause nuisance species to flourish. After development is complete, impervious areas shall be graded to channel water to catch basins and culverts, which in turn convey stormwater to the stormwater management basins. All stormwaters shall be stored and treated within the basin before it is released to downstream water bodies. Prior to release the stormwater will be retained in the stormwater management area and during the retention time the stormwater will be cooled by the ambient temperature of the earth. Treatment of the stormwater in the basin will reduce any threat of raising the temperature of any downstream waterbodies. 10.3 Best Management Practices Throughout construction, care shall be taken to ensure sediment does not enter surface water bodies and chemicals do not enter stormwater, potentially contaminating surface and groundwater supplies. The following Best Management Practices (BMP) shall be observed to maintain responsible environmental practices on the construction site. Good Housekeeping Good housekeeping is essential to reducing the risk of contaminating runoff waters during every stage of construction. The General Contractor shall ensure supervisors train each employee in good housekeeping practices as they pertain to the implementation of this SWPPP. Immediately following mobilization, the General Contractor shall take an inventory of all equipment and containers containing hazardous or toxic materials and submit this inventory to the Owner to keep on- site with this Stormwater Pollution Prevention Plan. This inventory shall be updated regularly to reflect changes in the quantity or type of hazardous and toxic materials stored on site. In the event of a spill, the Spill Response Team can refer to the inventory if the contents of the spill are unknown. All equipment shall be operational while it is stored on site. Inspections shall be conducted regularly to ensure all equipment is free of leaks and that oil and grease are not in contact with soils or stormwater. Portable equipment such as chain saws, drills as well as hand tools must be placed within a trailer or under cover at the end of each workday. PAGE 33 A storage area shall be designated on-site where all hazardous or toxic materials are stored. Each employee shall return the materials to the designated storage area following use. Chemicals, including oil, grease, solvents and detergents shall be stored on-site in approved containers only. Used chemicals shall be disposed of in refuse containers and removed periodically. Containers shall be regularly inspected to ensure the integrity of the container and seals to prevent leaks. A scheduled clean-up shall occur at the end of each workweek. During this clean up, empty containers of solvents, oils, grease, paints and detergents shall be disposed of, containers of gasoline shall be placed in trailers where they are not in contact with stormwater and the inventory shall be updated. Empty containers shall not be permitted on the ground. Preventative Maintenance All on-site vehicles must be inspected regularly for oil and grease leaks. All leaks shall be repaired immediately upon obtaining the appropriate equipment. If the leak cannot be fixed immediately, it shall be temporarily mitigated to prevent the flow of contaminants onto the soil and potentially into the stormwater. If necessary, the reservoir will be drained to stop the flow of contaminants, or the vehicle will be moved under cover. Drip pans shall be used when performing any maintenance or cleaning on construction vehicles. Spill Prevention and Response The safety of employees and neighbors shall be of utmost concern when hazardous or toxic chemicals are stored or utilized on-site. Materials Safety Data Sheets (MSDS) shall be obtained for all toxic or hazardous substances that are stored on-site to provide employees with a valuable database in assessing risk in the event of a spill. Any above ground storage tanks on site shall be installed pursuant to 6 NYCRR Part 614. According to the New York State “Minimum Standards for New and Substantially Modified Above Ground Storage Facilities”, all tanks installed must meet or exceed the design criteria in one or more of the following design or manufacturing standards: UL No. 142, UL No. 58, API Standard No. 650, API Standard No. 620, CAN4-S601-M84 or CAN4-S630-M84. Tanks constructed of wood, concrete, aluminum, fiberglass reinforced plastic as well as riveted or bolted steel tanks are not permitted. All tanks must have installed leak detection systems, secondary containment, corrosion protection, and undergo periodic monitoring pursuant to all Part 614 requirements. Should a spill occur, trained individuals shall be always on-call to mitigate the potential negative effects of a spill. The General Contractor shall have trained employees knowledgeable in the location of sorbent, brooms, rags and mops in the event of a small-scale spill. An inventory of equipment and its location shall be posted in a visible location as well as kept in proximity to this Pollution Prevention Plan. If the General Contractor does not have Hazardous Materials trained employees on site, a firm that specializes in handling spills, soil and water contamination shall be called. After a spill occurs, all personnel not trained in hazardous materials spill response shall be asked to evacuate the immediate area. The New York State NYSDEC of Environmental Conservation (NYSDEC) Spill Response Team shall be called at 1-(800)-457-7362 to investigate the spill and determine if additional actions should be taken to ensure the safety of personnel and nearby residents. Should any employee have a suspected injury, a local emergency squad must be contacted immediately. PAGE 34 11.0 Construction Sequence Scheduling A phased construction sequence schedule of the project will limit the acreage of exposed soils at any given time to less than five (5) acres. Limiting the exposed soils will reduce the amount of sediment in runoff water and ultimately preserve the quality of surface waters. The construction phasing method selected is designed to combine development with responsible land management as well as protection of sensitive environments both within the proposed development and the surrounding area. Temporary and permanent stabilization methods will be implemented before construction begins and will be continuously modified throughout the project to provide the best methods for stormwater management and pollution prevention. For more details pertaining to construction sequence, please refer to the “NYSDEC Instruction Manual for Stormwater Construction Permit” pages 23-26. Phasing of activities is as follows: Pre-Construction Activities • Identify all natural resources and mark and protect them as necessary i.e trees, vegetation, wetlands. • Identify on-site and downstream surface water bodies and install controls to protect them from sedimentation. • Establish temporary stone construction entrance pads to capture mud and debris from the tires of construction vehicles. • Install perimeter sediment controls such as silt fence as shown on the project plans. • All earth disturbance during this phase should be limited to work necessary to install erosion and sedimentation controls. During Construction Activities • Install principal sediment basin as shown on the project plans. • Install runoff and drainage controls as shown on the project plans and as necessary. These controls should reduce run-off flow rates and velocities as well as divert off site and clean run-off. • Stabilize the conveyance system i.e., ditches, swales, berms etc. by seeding, mulching, installing rock check dams. • Utilize practices to infiltrate the run-off as much as possible when applicable. • Stabilize all run-off outlets as shown on the project plans and as necessary. • Limit soil disturbance to small areas and preserve as much of the existing vegetation as practical. • Earth disturbance should be limited to 5 acres without prior approval from the NYSDEC. • All topsoil stockpiles should be staged in an area away from surface waters and storm drains and should be protected and stabilized. • Earth disturbance is not allowed in established buffers, within any regulated distance from wetlands, within the high-water line of a body of water affected by tidal action or other such protected zones. • At any location where surface run-off from disturbed or graded areas may flow off-site, sedimentation control measures must be installed to prevent sedimentation from being transported. • Regular inspections and maintenance should be performed as described in the following section. • The infiltration trenches shall not be utilized as sediment control devices during site construction and shall not be constructed until all the contributing drainage area has been completely stabilized. Post-Construction Activities • Identify the permanent structural or non-structural practices that will remain on the site. PAGE 35 • Provide an Operation & Maintenance (O&M) manual to the new Owner who is expected to conduct the necessary O&M over the life of the structures as described in Section 10.0 of this report. 12.0 Implementing the SWPPP 12.1 Employee Training All employees on-site shall be aware of the stipulations outlined in this SWPPP as it pertains to their everyday activities. All employees must be able to recognize potential problems and could provide either temporary or permanent stabilization measures, as appropriate, to mitigate stormwater runoff before problems occur. The NYSDEC periodically holds workshops on erosion and sediment control. It is recommended that on-site personnel attend these workshops for training current and up to date. Contact the NYSDEC for more information. 12.2 Site Inspections The Owner must have a qualified professional assess the site prior to the commencement of construction and certify in an inspection report that the appropriate erosion and sediment controls described in this SWPPP have been adequately installed or implemented to ensure overall preparedness of the site for the commencement of construction. A qualified professional is defined as a Professional Engineer or Landscape Architect licensed to practice in New York State or is a Certified Professional in Erosion and Sediment Control (CPESC). For sites where disturbances are limited to less than five acres, regular inspection of construction activities by the qualified professional are required at least once every 7 days to ensure deficiencies regarding erosion and sedimentation are reported and corrected. Inspection reports will be provided to the Owner and all contractors and subcontractors involved with earth disturbing activities within one business day of the field inspection. The inspector shall sign the certifying statements contained at the end of the inspection reports. The inspection reports must be in accordance with Part IV. C.4 and 6 of GP-0-25-001. At a minimum, the qualified inspector shall inspect all erosion and sediment control practices to ensure integrity and effectiveness, all post-construction stormwater management practices under construction to ensure that they are constructed in conformance with the SWPPP, all areas of disturbance that have not achieved final stabilization, all points of discharge to natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site, and all points of discharge from the construction site. For sites where disturbances are greater than five acres, regular inspection of construction activities by the qualified professional are required every 3 days to ensure deficiencies regarding erosion and sedimentation are reported and corrected. It is the responsibility of the Contractor to continuously monitor construction activities to ensure the measures outlined in this report are being implemented. Areas which have not been fully stabilized, areas used for materials storage and all structural control measures must be inspected once every seven calendar days to monitor erosion and assess the risk of sedimentation. The Owner or Contractor shall be responsible for monitoring precipitation amounts. Precipitation must be obtained from a reliable meteorological data source, or a rain gauge can be installed on site. If a rain gauge is installed, it should be monitored after each storm event. PAGE 36 Each year, a thorough site evaluation shall be performed to determine the continued applicability of the permit, and assess the need to make any changes that have not already been reflected in this SWPPP. The SWPPP shall be reviewed to evaluate its overall effectiveness in preventing sediment laden stormwater runoff. Temporary and permanent stabilization methods shall be assessed, and new methods shall be established, should any method be determined to be inadequate. A copy of the SWPPP must be maintained on site at all times in the field log book. The Owner must maintain a record of all inspection reports with the on-site SWPPP. The SWPPP and inspection reports must be maintained on-site and be made available to the permitting authority upon request. 12.3 Maintenance It shall be necessary to maintain all temporary controls installed as well as vegetative measures across the site. Maintenance shall also be necessary to ensure the permanent structural features, such as the stormwater management basins and conveyance piping remain optimally functional and continue to reduce the risk of sediment loading of surface water bodies. All controls shall be repaired or replaced as necessary and as noted on the inspection reports as prepared by the Owner’s Engineer. During construction, maintenance of these stabilization measures shall be the responsibility of the General Contractor or appropriate Sub Contractors. Vegetative plantings must not be allowed to become overgrown. Vegetation shall be removed should it be ineffective and be replaced with a variety of grasses, trees and shrubs more suitable for preventing stormwater runoff. Silt fences must be inspected regularly to ensure that they are still effective and their capability to reduce stormwater runoff has not been reduced due to prolonged sun exposure. Piping and catch basin sumps shall be cleaned out periodically to prevent the collection of sediment that will reduce the maximum flow. Sediment must be removed from sediment basins, infiltration basins or traps whenever their capacity has been reduced by 50 percent of their design capacity. Within the stormwater management basin, as maintenance occurs the elevation of the basin will be pumped down via a portable pump until the elevation permits maintenance to occur. Guidelines and recommendations for installation and maintenance practices can be found in the “New York Standards and Specifications Erosion and Sediment Control” handbook. 12.4 Progress Reports and Summaries Progress reports shall be completed by the General Contractor and all Sub Contractors weekly to document any conditions, which may affect adherence to the construction schedule and may ultimately result in changes to the stormwater pollution prevention plan. Each progress report must contain the project, date, weather conditions and a brief description of progress made throughout the week, including the use of temporary and permanent stabilization measures on all exposed soils. The progress reports shall be filed with this SWPPP in the on-site logbook. Additionally, as described in Section 1.1 of this report, the Owner’s Engineer will prepare weekly inspection reports. These reports should be maintained on-site with the SWPPP in accordance with GP-0- 25-001. PAGE 37 12.5 Certification Prior to starting construction, the Owner must certify that to the best of their knowledge this SWPPP was prepared in accordance with the requirements in the NYSDEC SPDES General Permit and that it meets all federal, state and local erosion and sediment control requirements. The certifying statement is presented in Appendix A of this report. The General Contractor and all appropriate Sub Contractors are responsible for reading and understanding the SWPPP and are also required to certify the SWPPP by signing the certifying statement presented in Appendix A of this report. All inspection reports are to be certified by an authorized person who has responsibility for the overall operation of the site such as a project manager or site superintendent. Certification of these documents is executed by signing the certifying statements presented at the end of the inspection reports. 12.6 NYSDEC Winter Site Stabilization/Site Inspections for Construction Sites A temporary site specific, enhanced erosion and sediment control plan must be developed and implemented should construction occur during winter/frozen ground conditions with soil exposure between November 15th and April 1st. The following requirements do not supersede any other requirements of this SWPPP as they apply to non-frozen ground conditions. • Prepare a snow management plan with adequate storage for snow and control of melt water, requiring cleared snow to be stored in a manner not affecting ongoing construction activities. • Enlarge and stabilize access points to provide for snow management and stockpiling. Snow management activities must not destroy or degrade installed erosion and sediment control practices. • A minimum 25 foot buffer shall be maintained from all perimeter controls such as silt fence. Mark silt fence with tall stakes that are visible above the snow pack. • Edges of disturbed areas that drain to a waterbody within 100 feet will have 2 rows of silt fence, 5 feet apart, installed on the contour. • Drainage structures must be kept open and free of snow and ice dams. All debris, ice dams, or debris from plowing operations, that restrict the flow of runoff and meltwater, shall be removed. • Sediment barriers must be installed at all appropriate perimeter and sensitive locations. Silt fence and other practices requiring earth disturbance must be installed before the ground freezes. • Soil stockpiles must be protected by the use of established vegetation, anchored straw mulch, rolled stabilization matting, or other durable covering. A barrier must be installed at least 15 feet from the toe of the stockpile to prevent soil migration and to capture loose soil. • In areas where soil disturbance activity has temporarily or permanently ceased, the application of soil stabilization measures should be initiated by the end of the next business day and completed within three (3) days. Rolled erosion control blankets must be used on all slopes 3 horizontal to 1 vertical or steeper. • If straw mulch alone is used for temporary stabilization, it shall be applied at double the standard rate of 2 tons per acre, making the application rate 4 tons per acre. Other manufactured PAGE 38 mulches should be applied at double the manufacturer’s recommended rate. • To ensure adequate stabilization of disturbed soil in advance of a melt event, areas of disturbed soil should be stabilized at the end of each work day unless: • work will resume within 24 hours in the same area and no precipitation is forecast or; • the work is in disturbed areas that collect and retain runoff, such as open utility trenches, foundation excavations, or water management areas. • Use stone paths to stabilize access perimeters of buildings under construction and areas where construction vehicle traffic is anticipated. Stone paths should be a minimum 10 feet in width but wider as necessary to accommodate equipment. During the winter season, if a site has been stabilized and soil disturbing activities have been suspended for the winter, weekly inspections can be reduced to once a month. If the soil disturbance is completely suspended and the site is properly stabilized an owner/operator may reduce the self-inspection frequency, but shall maintain a minimum of monthly inspections in all situations (even when there is total winter shutdown). To be allowed to reduce inspection frequencies, the operator must complete stabilization activities (perimeter controls, traps, barriers etc.) before proper installation is precluded by snow cover or frozen ground. If vegetation is desired, seeding, planting, and/or sodding must be scheduled to avoid die-off from fall frosts and allow for proper germination/establishment. Frozen ground, winter conditions and equipment can affect erosion and sediment control practices. Check for damage during monthly inspections and repair as necessary. This is especially important during thaws and prior to spring rain events. Weekly inspections must resume no later than March 15 or as directed by the Department. 13.0 Post Construction Operation and Maintenance 13.1 Operation and Maintenance Plan/Report A site-specific long-term operation and maintenance manual shall be prepared in accordance with the latest NYSSDM. The plan/report shall be conveyed to the owner prior to the start of construction. 14.0 Conclusion Lansing Engineering has designed a Stormwater Management Plan for the Finley Street Residential project that reduces and/or eliminates the impacts of the proposed development by controlling and treating stormwater through the use of drainage ditches and channels, storm sewer piping, and stormwater management systems. The stormwater management systems will function adequately and will not adversely affect adjacent or downstream properties provided it is constructed and maintained as outlined in this plan and as shown on the site plans. Appendix A Contractor Certification Forms STORMWATER POLLUTION PREVENTION PLAN CONTRACTOR CERTIFICATION Signatory requirements as per NYSDEC SPDES General Permit for Stormwater Discharges from Construction Activities Permit No. GP-0-25-001 Part III.A.6 "I hereby certify under penalty of law that I 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. I also understand that the owner or operator must comply with the terms and conditions of the most current version of the New York State Pollutant Discharge Elimination System ("SPDES") general permit for stormwater discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I am aware that there are significant penalties for submitting false information that I do not believe to be true, including the possibility of fine and imprisonment for knowing violations" Project Name and/or Address Contractor Company Name Address Phone Number email Trained Contractor * Title Authorized Representative Title Authorized Representative Signature Date Please identify the specific elements of the SWPPP you will be responsible for: (Use additional sheets if required) *A Trained Contractor as defined in Appendix A of the General Permit- means an employee from the contracting (construction) company, identified in Part III.A.6., that has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. Aft er receiving the initial training, the trained contractor shall receive four (4) hours of training every three (3) years. LANSING ENGINEERING, PC Appendix B Site Location/Drainage Area/Drainage Pattern Maps RISE - FINLEY STREET FINLEY STREET, CITY OF SARATOGA SPRINGS, SARATOGA COUNTY, NEW YORK PRELIMINARY / NOT FOR CONSTRUCTION LANSING E N G I N E E R I N G 2452 STATE ROUTE 9 SUITE 301 MALTA, NY 12020 (518) 899-5243 CIVIL - TRANSPORTATION - ENVIRONMENTAL - LAND SURVEYING 581.84 1 420.49 2 361.02 3 360.35 4 360.26 5 RI S E - F I N L E Y S T R E E T R E S I D E N T I A L FI N L E Y S T R E E T , C I T Y O F S A R A T O G A S P R I N G S , S A R A T O G A C O U N T Y , N E W Y O R K LA N S I N G E N G I N E E R I N G PR E L I M I N A R Y / N O T FO R C O N S T R U C T I O N 24 5 2 S T A T E R O U T E 9 S U I T E 3 0 1 MA L T A , N Y 1 2 0 2 0 (5 1 8 ) 8 9 9 - 5 2 4 3 CI V I L - T R A N S P O R T A T I O N - E N V I R O N M E N T A L - L A N D S U R V E Y I N G EXISTING CONDITIONS LEGEND Subcatchment Boundary Flow Path 2 2.8 36 Subcatchment Boundary Size (Acres) Curve Number 630.94 1A 871.80 3A 360.24 4A 360.14 5A 390.12 2A 360.40 3B OF F I C E / AM E N I T Y S P A C E 1 - S T O R Y 3, 0 0 0 s f F O O T P R I N T PL A Y G R O U N D SH E D PA T I O APARTMENT BUILDING 3 - STORY 25,555 sf FOOTPRINT 71 UNITS FFE = 316.57 T GE N EVEV EVEV RI S E - F I N L E Y S T R E E T R E S I D E N T I A L FI N L E Y S T R E E T , C I T Y O F S A R A T O G A S P R I N G S , S A R A T O G A C O U N T Y , N E W Y O R K LA N S I N G E N G I N E E R I N G PR E L I M I N A R Y / N O T FO R C O N S T R U C T I O N 24 5 2 S T A T E R O U T E 9 S U I T E 3 0 1 MA L T A , N Y 1 2 0 2 0 (5 1 8 ) 8 9 9 - 5 2 4 3 CI V I L - T R A N S P O R T A T I O N - E N V I R O N M E N T A L - L A N D S U R V E Y I N G PROPOSED CONDITIONS LEGEND Subcatchment Boundary Flow Path 2 2.8 36 Subcatchment Boundary Size (Acres) Curve Number Subcatchment Boundary Appendix C Pre-Development and Post-Development Run-off Calculations 1 2 3 4 5 DP1 DP2 DP3 DP4 DP5 Routing Diagram for EXISTING CONDITIONS Prepared by HP Inc., Printed 6/19/2025 HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 2HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Runoff = 0.02 cfs @ 13.66 hrs, Volume= 0.008 af, Depth> 0.05" Routed to Reach DP1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description * 0.670 98 0.430 36 Woods, Fair, HSG A 0.740 35 Brush, Fair, HSG A 1.840 58 Weighted Average 1.170 63.59% Pervious Area 0.670 36.41% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.2 100 0.0450 0.10 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 1.1 72 0.0450 1.06 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 18.3 172 Total Summary for Subcatchment 2: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description * 0.050 98 0.440 36 Woods, Fair, HSG A 0.490 42 Weighted Average 0.440 89.80% Pervious Area 0.050 10.20% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 3HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 1.030 36 Woods, Fair, HSG A 1.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.4 78 0.0310 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 4: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description 0.350 36 Woods, Fair, HSG A 0.350 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.2 100 0.0300 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description * 0.260 36 0.260 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Inflow Area = 1.840 ac, 36.41% Impervious, Inflow Depth > 0.05" for 1-yr event Inflow = 0.02 cfs @ 13.66 hrs, Volume= 0.008 af Outflow = 0.02 cfs @ 13.66 hrs, Volume= 0.008 af, Atten= 0%, Lag= 0.0 min NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 4HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP2: Inflow Area = 0.490 ac, 10.20% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 1.030 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.350 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.260 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 5HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Runoff = 0.54 cfs @ 12.30 hrs, Volume= 0.070 af, Depth> 0.46" Routed to Reach DP1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description * 0.670 98 0.430 36 Woods, Fair, HSG A 0.740 35 Brush, Fair, HSG A 1.840 58 Weighted Average 1.170 63.59% Pervious Area 0.670 36.41% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.2 100 0.0450 0.10 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 1.1 72 0.0450 1.06 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 18.3 172 Total Summary for Subcatchment 2: Runoff = 0.00 cfs @ 16.45 hrs, Volume= 0.002 af, Depth> 0.04" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description * 0.050 98 0.440 36 Woods, Fair, HSG A 0.490 42 Weighted Average 0.440 89.80% Pervious Area 0.050 10.20% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 6HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 1.030 36 Woods, Fair, HSG A 1.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.4 78 0.0310 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 4: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description 0.350 36 Woods, Fair, HSG A 0.350 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.2 100 0.0300 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description * 0.260 36 0.260 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Inflow Area = 1.840 ac, 36.41% Impervious, Inflow Depth > 0.46" for 10-yr event Inflow = 0.54 cfs @ 12.30 hrs, Volume= 0.070 af Outflow = 0.54 cfs @ 12.30 hrs, Volume= 0.070 af, Atten= 0%, Lag= 0.0 min NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 7HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP2: Inflow Area = 0.490 ac, 10.20% Impervious, Inflow Depth > 0.04" for 10-yr event Inflow = 0.00 cfs @ 16.45 hrs, Volume= 0.002 af Outflow = 0.00 cfs @ 16.45 hrs, Volume= 0.002 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 1.030 ac, 0.00% Impervious, Inflow Depth = 0.00" for 10-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.350 ac, 0.00% Impervious, Inflow Depth = 0.00" for 10-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.260 ac, 0.00% Impervious, Inflow Depth = 0.00" for 10-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 8HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Runoff = 1.16 cfs @ 12.26 hrs, Volume= 0.125 af, Depth> 0.81" Routed to Reach DP1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description * 0.670 98 0.430 36 Woods, Fair, HSG A 0.740 35 Brush, Fair, HSG A 1.840 58 Weighted Average 1.170 63.59% Pervious Area 0.670 36.41% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.2 100 0.0450 0.10 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 1.1 72 0.0450 1.06 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 18.3 172 Total Summary for Subcatchment 2: Runoff = 0.03 cfs @ 12.52 hrs, Volume= 0.007 af, Depth> 0.16" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description * 0.050 98 0.440 36 Woods, Fair, HSG A 0.490 42 Weighted Average 0.440 89.80% Pervious Area 0.050 10.20% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3: Runoff = 0.01 cfs @ 19.22 hrs, Volume= 0.003 af, Depth> 0.03" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 9HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 1.030 36 Woods, Fair, HSG A 1.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.4 78 0.0310 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 4: Runoff = 0.00 cfs @ 19.33 hrs, Volume= 0.001 af, Depth> 0.03" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description 0.350 36 Woods, Fair, HSG A 0.350 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.2 100 0.0300 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.00 cfs @ 19.05 hrs, Volume= 0.001 af, Depth> 0.03" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description * 0.260 36 0.260 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Inflow Area = 1.840 ac, 36.41% Impervious, Inflow Depth > 0.81" for 25-yr event Inflow = 1.16 cfs @ 12.26 hrs, Volume= 0.125 af Outflow = 1.16 cfs @ 12.26 hrs, Volume= 0.125 af, Atten= 0%, Lag= 0.0 min NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 10HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP2: Inflow Area = 0.490 ac, 10.20% Impervious, Inflow Depth > 0.16" for 25-yr event Inflow = 0.03 cfs @ 12.52 hrs, Volume= 0.007 af Outflow = 0.03 cfs @ 12.52 hrs, Volume= 0.007 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 1.030 ac, 0.00% Impervious, Inflow Depth > 0.03" for 25-yr event Inflow = 0.01 cfs @ 19.22 hrs, Volume= 0.003 af Outflow = 0.01 cfs @ 19.22 hrs, Volume= 0.003 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.350 ac, 0.00% Impervious, Inflow Depth > 0.03" for 25-yr event Inflow = 0.00 cfs @ 19.33 hrs, Volume= 0.001 af Outflow = 0.00 cfs @ 19.33 hrs, Volume= 0.001 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.260 ac, 0.00% Impervious, Inflow Depth > 0.03" for 25-yr event Inflow = 0.00 cfs @ 19.05 hrs, Volume= 0.001 af Outflow = 0.00 cfs @ 19.05 hrs, Volume= 0.001 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 11HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Runoff = 2.74 cfs @ 12.24 hrs, Volume= 0.260 af, Depth> 1.70" Routed to Reach DP1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description * 0.670 98 0.430 36 Woods, Fair, HSG A 0.740 35 Brush, Fair, HSG A 1.840 58 Weighted Average 1.170 63.59% Pervious Area 0.670 36.41% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.2 100 0.0450 0.10 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 1.1 72 0.0450 1.06 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 18.3 172 Total Summary for Subcatchment 2: Runoff = 0.19 cfs @ 12.14 hrs, Volume= 0.024 af, Depth> 0.59" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description * 0.050 98 0.440 36 Woods, Fair, HSG A 0.490 42 Weighted Average 0.440 89.80% Pervious Area 0.050 10.20% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3: Runoff = 0.12 cfs @ 12.61 hrs, Volume= 0.024 af, Depth> 0.27" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 12HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 1.030 36 Woods, Fair, HSG A 1.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 16.4 78 0.0310 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 4: Runoff = 0.04 cfs @ 12.65 hrs, Volume= 0.008 af, Depth> 0.27" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description 0.350 36 Woods, Fair, HSG A 0.350 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 20.2 100 0.0300 0.08 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.03 cfs @ 12.50 hrs, Volume= 0.006 af, Depth> 0.28" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description * 0.260 36 0.260 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Inflow Area = 1.840 ac, 36.41% Impervious, Inflow Depth > 1.70" for 100-yr event Inflow = 2.74 cfs @ 12.24 hrs, Volume= 0.260 af Outflow = 2.74 cfs @ 12.24 hrs, Volume= 0.260 af, Atten= 0%, Lag= 0.0 min NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"EXISTING CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 13HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP2: Inflow Area = 0.490 ac, 10.20% Impervious, Inflow Depth > 0.59" for 100-yr event Inflow = 0.19 cfs @ 12.14 hrs, Volume= 0.024 af Outflow = 0.19 cfs @ 12.14 hrs, Volume= 0.024 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 1.030 ac, 0.00% Impervious, Inflow Depth > 0.27" for 100-yr event Inflow = 0.12 cfs @ 12.61 hrs, Volume= 0.024 af Outflow = 0.12 cfs @ 12.61 hrs, Volume= 0.024 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.350 ac, 0.00% Impervious, Inflow Depth > 0.27" for 100-yr event Inflow = 0.04 cfs @ 12.65 hrs, Volume= 0.008 af Outflow = 0.04 cfs @ 12.65 hrs, Volume= 0.008 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.260 ac, 0.00% Impervious, Inflow Depth > 0.28" for 100-yr event Inflow = 0.03 cfs @ 12.50 hrs, Volume= 0.006 af Outflow = 0.03 cfs @ 12.50 hrs, Volume= 0.006 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 1A 2A 3A 3B 4 5 DP1 DP2 DP3 DP4 DP5 P1 P2 Routing Diagram for PROPOSED CONDITIONS Prepared by HP Inc., Printed 6/19/2025 HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 2HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1A: Runoff = 0.04 cfs @ 12.41 hrs, Volume= 0.010 af, Depth> 0.13" Routed to Pond P1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description * 0.380 98 0.560 39 >75% Grass cover, Good, HSG A 0.940 63 Weighted Average 0.560 59.57% Pervious Area 0.380 40.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.8 48 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.61" Summary for Subcatchment 2A: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description 0.120 39 >75% Grass cover, Good, HSG A 0.120 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3A: Runoff = 2.22 cfs @ 12.05 hrs, Volume= 0.131 af, Depth> 0.87" Routed to Pond P2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description * 1.410 98 0.390 39 >75% Grass cover, Good, HSG A 1.800 85 Weighted Average 0.390 21.67% Pervious Area 1.410 78.33% Impervious Area NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 3HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 18 0.0200 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 0.1 21 0.3300 4.02 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 6.1 39 Total Summary for Subcatchment 3B: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description 0.400 36 Woods, Fair, HSG A 0.400 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 4: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" Area (ac) CN Description 0.240 36 Woods, Fair, HSG A 0.240 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.2 69 0.0500 0.09 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24" NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 4HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 0.140 36 Woods, Fair, HSG A 0.140 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Summary for Reach DP2: Inflow Area = 0.120 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 0.400 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.240 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.140 ac, 0.00% Impervious, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 5HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Pond P1: Inflow Area = 0.940 ac, 40.43% Impervious, Inflow Depth > 0.13" for 1-yr event Inflow = 0.04 cfs @ 12.41 hrs, Volume= 0.010 af Outflow = 0.04 cfs @ 12.46 hrs, Volume= 0.010 af, Atten= 0%, Lag= 3.1 min Discarded = 0.04 cfs @ 12.46 hrs, Volume= 0.010 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 305.93' @ 12.46 hrs Surf.Area= 0.037 ac Storage= 0.000 af Plug-Flow detention time= 2.3 min calculated for 0.010 af (100% of inflow) Center-of-Mass det. time= 1.4 min ( 911.3 - 909.8 ) Volume Invert Avail.Storage Storage Description #1A 305.92' 0.041 af 30.00'W x 54.14'L x 4.00'H Field A 0.149 af Overall - 0.047 af Embedded = 0.103 af x 40.0% Voids #2A 306.92' 0.047 af Lane StormKeeper SK75 x 42 Inside #1 Effective Size= 44.7"W x 30.0"H => 6.61 sf x 7.08'L = 46.8 cf Overall Size= 51.0"W x 30.0"H x 7.30'L with 0.22' Overlap 42 Chambers in 6 Rows Cap Storage= 5.2 cf x 2 x 6 rows = 62.9 cf 0.088 af Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 305.92'5.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.19 cfs @ 12.46 hrs HW=305.93' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.19 cfs) Summary for Pond P2: Inflow Area = 1.800 ac, 78.33% Impervious, Inflow Depth > 0.87" for 1-yr event Inflow = 2.22 cfs @ 12.05 hrs, Volume= 0.131 af Outflow = 0.59 cfs @ 11.95 hrs, Volume= 0.131 af, Atten= 74%, Lag= 0.0 min Discarded = 0.59 cfs @ 11.95 hrs, Volume= 0.131 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 307.85' @ 12.37 hrs Surf.Area= 0.073 ac Storage= 0.025 af Plug-Flow detention time= 11.3 min calculated for 0.130 af (100% of inflow) Center-of-Mass det. time= 10.8 min ( 820.3 - 809.5 ) NY-FinleyStreet 24-hr S1 1-yr Rainfall=2.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 6HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1A 307.00' 0.092 af 19.46'W x 120.10'L x 6.95'H Field A 0.373 af Overall - 0.144 af Embedded = 0.229 af x 40.0% Voids #2A 308.00' 0.144 af Lane StormKeeper SK290 x 56 Inside #1 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap 56 Chambers in 2 Rows Cap Storage= 39.6 cf x 2 x 2 rows = 158.4 cf #3B 307.00' 0.032 af 9.38'W x 87.90'L x 6.95'H Field B 0.131 af Overall - 0.052 af Embedded = 0.080 af x 40.0% Voids #4B 308.00' 0.052 af Lane StormKeeper SK290 x 20 Inside #3 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap Cap Storage= 39.6 cf x 2 x 1 rows = 79.2 cf 0.319 af Total Available Storage Storage Group A created with Chamber Wizard Storage Group B created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 307.00'8.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.59 cfs @ 11.95 hrs HW=307.08' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.59 cfs) NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 7HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1A: Runoff = 0.65 cfs @ 12.10 hrs, Volume= 0.053 af, Depth> 0.67" Routed to Pond P1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description * 0.380 98 0.560 39 >75% Grass cover, Good, HSG A 0.940 63 Weighted Average 0.560 59.57% Pervious Area 0.380 40.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.8 48 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.61" Summary for Subcatchment 2A: Runoff = 0.00 cfs @ 20.00 hrs, Volume= 0.000 af, Depth> 0.01" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description 0.120 39 >75% Grass cover, Good, HSG A 0.120 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3A: Runoff = 5.23 cfs @ 12.04 hrs, Volume= 0.306 af, Depth> 2.04" Routed to Pond P2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description * 1.410 98 0.390 39 >75% Grass cover, Good, HSG A 1.800 85 Weighted Average 0.390 21.67% Pervious Area 1.410 78.33% Impervious Area NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 8HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 18 0.0200 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 0.1 21 0.3300 4.02 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 6.1 39 Total Summary for Subcatchment 3B: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description 0.400 36 Woods, Fair, HSG A 0.400 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 4: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" Area (ac) CN Description 0.240 36 Woods, Fair, HSG A 0.240 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.2 69 0.0500 0.09 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Depth= 0.00" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73" NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 9HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 0.140 36 Woods, Fair, HSG A 0.140 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Summary for Reach DP2: Inflow Area = 0.120 ac, 0.00% Impervious, Inflow Depth > 0.01" for 10-yr event Inflow = 0.00 cfs @ 20.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 20.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 0.400 ac, 0.00% Impervious, Inflow Depth = 0.00" for 10-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.240 ac, 0.00% Impervious, Inflow Depth = 0.00" for 10-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.140 ac, 0.00% Impervious, Inflow Depth = 0.00" for 10-yr event Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 10HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Pond P1: Inflow Area = 0.940 ac, 40.43% Impervious, Inflow Depth > 0.67" for 10-yr event Inflow = 0.65 cfs @ 12.10 hrs, Volume= 0.053 af Outflow = 0.19 cfs @ 12.00 hrs, Volume= 0.053 af, Atten= 71%, Lag= 0.0 min Discarded = 0.19 cfs @ 12.00 hrs, Volume= 0.053 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 306.70' @ 12.64 hrs Surf.Area= 0.037 ac Storage= 0.012 af Plug-Flow detention time= 17.6 min calculated for 0.053 af (100% of inflow) Center-of-Mass det. time= 17.0 min ( 859.4 - 842.3 ) Volume Invert Avail.Storage Storage Description #1A 305.92' 0.041 af 30.00'W x 54.14'L x 4.00'H Field A 0.149 af Overall - 0.047 af Embedded = 0.103 af x 40.0% Voids #2A 306.92' 0.047 af Lane StormKeeper SK75 x 42 Inside #1 Effective Size= 44.7"W x 30.0"H => 6.61 sf x 7.08'L = 46.8 cf Overall Size= 51.0"W x 30.0"H x 7.30'L with 0.22' Overlap 42 Chambers in 6 Rows Cap Storage= 5.2 cf x 2 x 6 rows = 62.9 cf 0.088 af Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 305.92'5.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.19 cfs @ 12.00 hrs HW=305.96' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.19 cfs) Summary for Pond P2: Inflow Area = 1.800 ac, 78.33% Impervious, Inflow Depth > 2.04" for 10-yr event Inflow = 5.23 cfs @ 12.04 hrs, Volume= 0.306 af Outflow = 0.59 cfs @ 11.65 hrs, Volume= 0.306 af, Atten= 89%, Lag= 0.0 min Discarded = 0.59 cfs @ 11.65 hrs, Volume= 0.306 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 309.41' @ 12.68 hrs Surf.Area= 0.073 ac Storage= 0.113 af Plug-Flow detention time= 63.3 min calculated for 0.306 af (100% of inflow) Center-of-Mass det. time= 62.9 min ( 847.5 - 784.7 ) NY-FinleyStreet 24-hr S1 10-yr Rainfall=3.73"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 11HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1A 307.00' 0.092 af 19.46'W x 120.10'L x 6.95'H Field A 0.373 af Overall - 0.144 af Embedded = 0.229 af x 40.0% Voids #2A 308.00' 0.144 af Lane StormKeeper SK290 x 56 Inside #1 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap 56 Chambers in 2 Rows Cap Storage= 39.6 cf x 2 x 2 rows = 158.4 cf #3B 307.00' 0.032 af 9.38'W x 87.90'L x 6.95'H Field B 0.131 af Overall - 0.052 af Embedded = 0.080 af x 40.0% Voids #4B 308.00' 0.052 af Lane StormKeeper SK290 x 20 Inside #3 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap Cap Storage= 39.6 cf x 2 x 1 rows = 79.2 cf 0.319 af Total Available Storage Storage Group A created with Chamber Wizard Storage Group B created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 307.00'8.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.59 cfs @ 11.65 hrs HW=307.08' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.59 cfs) NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 12HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1A: Runoff = 1.17 cfs @ 12.09 hrs, Volume= 0.086 af, Depth> 1.10" Routed to Pond P1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description * 0.380 98 0.560 39 >75% Grass cover, Good, HSG A 0.940 63 Weighted Average 0.560 59.57% Pervious Area 0.380 40.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.8 48 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.61" Summary for Subcatchment 2A: Runoff = 0.00 cfs @ 13.65 hrs, Volume= 0.001 af, Depth> 0.09" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description 0.120 39 >75% Grass cover, Good, HSG A 0.120 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3A: Runoff = 6.89 cfs @ 12.04 hrs, Volume= 0.413 af, Depth> 2.75" Routed to Pond P2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description * 1.410 98 0.390 39 >75% Grass cover, Good, HSG A 1.800 85 Weighted Average 0.390 21.67% Pervious Area 1.410 78.33% Impervious Area NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 13HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 18 0.0200 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 0.1 21 0.3300 4.02 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 6.1 39 Total Summary for Subcatchment 3B: Runoff = 0.00 cfs @ 19.05 hrs, Volume= 0.001 af, Depth> 0.03" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description 0.400 36 Woods, Fair, HSG A 0.400 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 4: Runoff = 0.00 cfs @ 19.01 hrs, Volume= 0.001 af, Depth> 0.03" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" Area (ac) CN Description 0.240 36 Woods, Fair, HSG A 0.240 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.2 69 0.0500 0.09 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.00 cfs @ 19.05 hrs, Volume= 0.000 af, Depth> 0.03" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57" NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 14HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 0.140 36 Woods, Fair, HSG A 0.140 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Summary for Reach DP2: Inflow Area = 0.120 ac, 0.00% Impervious, Inflow Depth > 0.09" for 25-yr event Inflow = 0.00 cfs @ 13.65 hrs, Volume= 0.001 af Outflow = 0.00 cfs @ 13.65 hrs, Volume= 0.001 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 0.400 ac, 0.00% Impervious, Inflow Depth > 0.03" for 25-yr event Inflow = 0.00 cfs @ 19.05 hrs, Volume= 0.001 af Outflow = 0.00 cfs @ 19.05 hrs, Volume= 0.001 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.240 ac, 0.00% Impervious, Inflow Depth > 0.03" for 25-yr event Inflow = 0.00 cfs @ 19.01 hrs, Volume= 0.001 af Outflow = 0.00 cfs @ 19.01 hrs, Volume= 0.001 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.140 ac, 0.00% Impervious, Inflow Depth > 0.03" for 25-yr event Inflow = 0.00 cfs @ 19.05 hrs, Volume= 0.000 af Outflow = 0.00 cfs @ 19.05 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 15HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Pond P1: Inflow Area = 0.940 ac, 40.43% Impervious, Inflow Depth > 1.10" for 25-yr event Inflow = 1.17 cfs @ 12.09 hrs, Volume= 0.086 af Outflow = 0.19 cfs @ 11.95 hrs, Volume= 0.086 af, Atten= 84%, Lag= 0.0 min Discarded = 0.19 cfs @ 11.95 hrs, Volume= 0.086 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 307.38' @ 12.81 hrs Surf.Area= 0.037 ac Storage= 0.029 af Plug-Flow detention time= 54.7 min calculated for 0.086 af (100% of inflow) Center-of-Mass det. time= 54.0 min ( 882.6 - 828.6 ) Volume Invert Avail.Storage Storage Description #1A 305.92' 0.041 af 30.00'W x 54.14'L x 4.00'H Field A 0.149 af Overall - 0.047 af Embedded = 0.103 af x 40.0% Voids #2A 306.92' 0.047 af Lane StormKeeper SK75 x 42 Inside #1 Effective Size= 44.7"W x 30.0"H => 6.61 sf x 7.08'L = 46.8 cf Overall Size= 51.0"W x 30.0"H x 7.30'L with 0.22' Overlap 42 Chambers in 6 Rows Cap Storage= 5.2 cf x 2 x 6 rows = 62.9 cf 0.088 af Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 305.92'5.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.19 cfs @ 11.95 hrs HW=305.99' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.19 cfs) Summary for Pond P2: Inflow Area = 1.800 ac, 78.33% Impervious, Inflow Depth > 2.75" for 25-yr event Inflow = 6.89 cfs @ 12.04 hrs, Volume= 0.413 af Outflow = 0.59 cfs @ 11.60 hrs, Volume= 0.412 af, Atten= 92%, Lag= 0.0 min Discarded = 0.59 cfs @ 11.60 hrs, Volume= 0.412 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 310.45' @ 12.87 hrs Surf.Area= 0.073 ac Storage= 0.173 af Plug-Flow detention time= 106.4 min calculated for 0.411 af (100% of inflow) Center-of-Mass det. time= 105.7 min ( 882.4 - 776.7 ) NY-FinleyStreet 24-hr S1 25-yr Rainfall=4.57"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 16HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1A 307.00' 0.092 af 19.46'W x 120.10'L x 6.95'H Field A 0.373 af Overall - 0.144 af Embedded = 0.229 af x 40.0% Voids #2A 308.00' 0.144 af Lane StormKeeper SK290 x 56 Inside #1 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap 56 Chambers in 2 Rows Cap Storage= 39.6 cf x 2 x 2 rows = 158.4 cf #3B 307.00' 0.032 af 9.38'W x 87.90'L x 6.95'H Field B 0.131 af Overall - 0.052 af Embedded = 0.080 af x 40.0% Voids #4B 308.00' 0.052 af Lane StormKeeper SK290 x 20 Inside #3 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap Cap Storage= 39.6 cf x 2 x 1 rows = 79.2 cf 0.319 af Total Available Storage Storage Group A created with Chamber Wizard Storage Group B created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 307.00'8.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.59 cfs @ 11.60 hrs HW=307.09' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.59 cfs) NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 17HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 1A: Runoff = 2.37 cfs @ 12.09 hrs, Volume= 0.166 af, Depth> 2.12" Routed to Pond P1 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description * 0.380 98 0.560 39 >75% Grass cover, Good, HSG A 0.940 63 Weighted Average 0.560 59.57% Pervious Area 0.380 40.43% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.8 48 0.0200 0.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.61" Summary for Subcatchment 2A: Runoff = 0.03 cfs @ 12.46 hrs, Volume= 0.004 af, Depth> 0.42" Routed to Reach DP2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description 0.120 39 >75% Grass cover, Good, HSG A 0.120 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 3A: Runoff = 10.24 cfs @ 12.04 hrs, Volume= 0.634 af, Depth> 4.23" Routed to Pond P2 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description * 1.410 98 0.390 39 >75% Grass cover, Good, HSG A 1.800 85 Weighted Average 0.390 21.67% Pervious Area 1.410 78.33% Impervious Area NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 18HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 18 0.0200 0.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" 0.1 21 0.3300 4.02 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 6.1 39 Total Summary for Subcatchment 3B: Runoff = 0.05 cfs @ 12.50 hrs, Volume= 0.009 af, Depth> 0.28" Routed to Reach DP3 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description 0.400 36 Woods, Fair, HSG A 0.400 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Subcatchment 4: Runoff = 0.03 cfs @ 12.56 hrs, Volume= 0.006 af, Depth> 0.28" Routed to Reach DP4 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" Area (ac) CN Description 0.240 36 Woods, Fair, HSG A 0.240 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.2 69 0.0500 0.09 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.61" Summary for Subcatchment 5: Runoff = 0.02 cfs @ 12.50 hrs, Volume= 0.003 af, Depth> 0.28" Routed to Reach DP5 : Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24" NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 19HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Area (ac) CN Description 0.140 36 Woods, Fair, HSG A 0.140 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Summary for Reach DP1: Summary for Reach DP2: Inflow Area = 0.120 ac, 0.00% Impervious, Inflow Depth > 0.42" for 100-yr event Inflow = 0.03 cfs @ 12.46 hrs, Volume= 0.004 af Outflow = 0.03 cfs @ 12.46 hrs, Volume= 0.004 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP3: Inflow Area = 0.400 ac, 0.00% Impervious, Inflow Depth > 0.28" for 100-yr event Inflow = 0.05 cfs @ 12.50 hrs, Volume= 0.009 af Outflow = 0.05 cfs @ 12.50 hrs, Volume= 0.009 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP4: Inflow Area = 0.240 ac, 0.00% Impervious, Inflow Depth > 0.28" for 100-yr event Inflow = 0.03 cfs @ 12.56 hrs, Volume= 0.006 af Outflow = 0.03 cfs @ 12.56 hrs, Volume= 0.006 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Reach DP5: Inflow Area = 0.140 ac, 0.00% Impervious, Inflow Depth > 0.28" for 100-yr event Inflow = 0.02 cfs @ 12.50 hrs, Volume= 0.003 af Outflow = 0.02 cfs @ 12.50 hrs, Volume= 0.003 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 20HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Summary for Pond P1: Inflow Area = 0.940 ac, 40.43% Impervious, Inflow Depth > 2.12" for 100-yr event Inflow = 2.37 cfs @ 12.09 hrs, Volume= 0.166 af Outflow = 0.19 cfs @ 11.70 hrs, Volume= 0.135 af, Atten= 92%, Lag= 0.0 min Discarded = 0.19 cfs @ 11.70 hrs, Volume= 0.135 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 309.38' @ 13.62 hrs Surf.Area= 0.037 ac Storage= 0.080 af Plug-Flow detention time= 183.7 min calculated for 0.134 af (81% of inflow) Center-of-Mass det. time= 129.6 min ( 941.1 - 811.5 ) Volume Invert Avail.Storage Storage Description #1A 305.92' 0.041 af 30.00'W x 54.14'L x 4.00'H Field A 0.149 af Overall - 0.047 af Embedded = 0.103 af x 40.0% Voids #2A 306.92' 0.047 af Lane StormKeeper SK75 x 42 Inside #1 Effective Size= 44.7"W x 30.0"H => 6.61 sf x 7.08'L = 46.8 cf Overall Size= 51.0"W x 30.0"H x 7.30'L with 0.22' Overlap 42 Chambers in 6 Rows Cap Storage= 5.2 cf x 2 x 6 rows = 62.9 cf 0.088 af Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 305.92'5.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.19 cfs @ 11.70 hrs HW=305.98' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.19 cfs) Summary for Pond P2: Inflow Area = 1.800 ac, 78.33% Impervious, Inflow Depth > 4.23" for 100-yr event Inflow = 10.24 cfs @ 12.04 hrs, Volume= 0.634 af Outflow = 0.59 cfs @ 11.30 hrs, Volume= 0.498 af, Atten= 94%, Lag= 0.0 min Discarded = 0.59 cfs @ 11.30 hrs, Volume= 0.498 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 313.63' @ 13.38 hrs Surf.Area= 0.073 ac Storage= 0.310 af Plug-Flow detention time= 175.7 min calculated for 0.496 af (78% of inflow) Center-of-Mass det. time= 119.4 min ( 885.0 - 765.6 ) NY-FinleyStreet 24-hr S1 100-yr Rainfall=6.24"PROPOSED CONDITIONS Printed 6/19/2025Prepared by HP Inc. Page 21HydroCAD® 10.10-6a s/n 10911 © 2020 HydroCAD Software Solutions LLC Volume Invert Avail.Storage Storage Description #1A 307.00' 0.092 af 19.46'W x 120.10'L x 6.95'H Field A 0.373 af Overall - 0.144 af Embedded = 0.229 af x 40.0% Voids #2A 308.00' 0.144 af Lane StormKeeper SK290 x 56 Inside #1 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap 56 Chambers in 2 Rows Cap Storage= 39.6 cf x 2 x 2 rows = 158.4 cf #3B 307.00' 0.032 af 9.38'W x 87.90'L x 6.95'H Field B 0.131 af Overall - 0.052 af Embedded = 0.080 af x 40.0% Voids #4B 308.00' 0.052 af Lane StormKeeper SK290 x 20 Inside #3 Effective Size= 88.4"W x 59.0"H => 27.10 sf x 4.02'L = 109.1 cf Overall Size= 100.5"W x 59.4"H x 4.32'L with 0.29' Overlap Cap Storage= 39.6 cf x 2 x 1 rows = 79.2 cf 0.319 af Total Available Storage Storage Group A created with Chamber Wizard Storage Group B created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 307.00'8.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.59 cfs @ 11.30 hrs HW=307.07' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.59 cfs) Appendix D Calculations – Storm Management, Green Infrastructure, Pipe Sizing NOI QUESTIONS # cf af 28 7295 0.167 30 9705 0.223 31 32 3920 0.090 32a 33a 0 0.000 34 9705 0.223 35 Reported Value Yes Yes Yes Minimum RRv NOI Question Sum of Volume Reduced & Treated Total WQv Treated Total RRV Provided Total Water Quality Volume (WQv) Required Is Sum RRv Provided and WQv Provided ≥WQv Required? Is RRv Provided ≥ Minimum RRv Required? Is RRv Provided ≥WQv Required? Step 2 - Calculate Water Quality Volume No Project Title P= 1.15 inches Contributing Area (Acres) Impervious Area (Acres) Percent Impervious % Rv WQv (cf) SMP Description Project Area Total 2.73 1.79 66 0.64 7,295 SMP Practice 1 1.80 1.41 78 0.76 5,673 Underground Infiltration System 2 0.93 0.36 39 0.40 1,547 Underground Infiltration System 3 0.54 0.00 0 0.05 0 Conservation of Natural Areas 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Sum of Practices 3.27 1.77 54 0.54 7,333 Total 2.73 1.79 66 0.64 7295 Required WQv OK - MEETS WQV Finley Street Residential Calculate Required WQv Is this project subject to Section 4.3 of the NYS Design Manual for Enhanced Phosphorus Removal? Enter 90% Rainfall Event as P New ConstructionWhat is the nature of this construction project? Steps 3 and 5 - Apply RR Techniques and Standard SMPs Runoff Reduction Techiques/Standard SMPs Total Contributing Area Total Contributing Impervious Area WQv Reduced (RRv) WQv Treated (acres) (acres) (cf) (cf) Conservation of Natural Areas RR-1 0.93 2,485 Sheet Flow to Riparian Buffer/Filter Strip RR-2 0.00 0.00 0 Tree Planting/Tree Pit/Tree Trench RR-3 0.00 0.00 0 Disconnection of Rooftop Runoff RR-4 0.00 0 Vegetated Swale RR-5 0.00 0.00 0 Rain Garden RR-6 0.00 0.00 0 Stormwater Planter RR-7 0.00 0.00 0 Rainwater Harvesting Systems RR-8 0.00 0.00 0 Porous Pavement RR-9 0.00 0.00 0 Green Roof (Extensive & Intensive) RR-10 0.00 0.00 0 Stream Daylighting RR-11 Infiltration Trench I-1 0.00 0.00 0 0 Infiltration Basin I-2 1.80 1.41 0 0 Dry Well I-3 0.00 0.00 0 0 Underground Infiltration System I-4 2.73 1.77 7,220 0 Infiltration Bioretention F-4 0.00 0.00 0 0 Filtration Bioretention F-5 0.00 0.00 0 0 Bioslope F-6 0.00 0.00 0 0 Dry swale O-1 0.00 0.00 0 0 Micropool Extended Detention P-1 0.00 0.00 0 Wet Pond P-2 0.00 0.00 0 Wet Extended Detention P-3 0.00 0.00 0 Multiple Pond System P-4 0.00 0.00 0 Shallow Wetland W-1 0.00 0.00 0 Extended Detention Shallow Wetland W-2 0.00 0.00 0 Pond/Wetland System W-3 0.00 0.00 0 Pocket Wetland W-4 0.00 0.00 0 Gravel Wetland W-5 0.00 0.00 0 Surface Sand Filter F-1 0.00 0.00 0 Underground Sand Filter F-2 0.00 0.00 0 Perimeter Sand Filter F-3 0.00 0.00 0 Wet Swale O-2 0.00 0.00 0 Flow Based Alternative Practice - 0.00 0.00 0 Volume Based Alternative Practice - →0.93 0.00 2,485 →4.53 3.18 7,220 0 →0.00 0.00 0 Totals by Alternative SMP →0.00 0.00 0 →5.46 3.18 9,705 0 Totals by RR Technique Totals by Standard SMP w/RRV Totals by Standard SMP Totals ( RR Techniques + all SMPs) Runoff Reduction Volume and Treated Volumes St a n d a r d S M P s w / RR v C a p a c i t y RR T e c h n i q u e s St a n d a r d S M P s Al t . SM P s Step 4 - Calcuate Minimum RRv Required Hydrologic Soil Group Acres S A 3.63 55% B 40% C 30% D 20% Total Area 3.63 S =0.55 Impervious = 1.79 acres Precipitation 1.15 inches Rv 0.95 Minimum RRv 0.090 af 3920 cf Enter the Soils Data for the site Calculate the Minimum RRv Conservation of Natural Areas (RR-1) Design Point:Finley Street Residential Drainage Area Number 2 Yes Yes No No Contributing Area (Acres)Impervious Area (Acres) Percent Impervious % Rv WQv (cf)Precipitation (in) 2.73 1.79 66 0.64 7,295 1.15 0.93 1.80 1.79 0.64 4,810 1.15 2,485RRv Provided Is Sheet Flow to Riparian Buffer or another area based practice already being used for this area? Does the conservation area receive runoff from existing or new impervious areas? Sizing Criteria Required WQv cf Area Reduction Adjustments Does the conservation area proposed have a minimum contiguous area of 10,000 Is the conservation area permanently protected through establishment of a legal conservation easement? Design Criteria Subtract Area Conserved Area Reduction WQv Underground Infiltration (I-4) Design Point:Finley Street Residential Drainage Area Number Contributing Area (Acres) Impervious Area (Acres) Percent Impervious % Rv WQv (cf) Precipitation (in)Description 1 1.80 1.41 78 0.76 5,673 1.15 Underground Infiltration System 5 No No No 10 12 5575 Value Units WQv 5673 cf db 1.8 ft Ab 3,242 sf Ab 3250 sf Vs 5009 cf Vsys 8624 cf WQv 13633 cf 5,673 Enter Site Data For Drainage Area to be Treated by Practice Design Criteria Enter underlying soil infiltration rate (based on geotechnical testing, refer to Appendix D) Is the contributing area to the practice an "Infiltration Restricted" stormwater hotspot? Enter pretreatment volume provided (cf) Is the contributing area greater than 10 acres? Enter depth to seasonal high water table (ft) Enter depth to bedrock (ft) Is the contributing area to the practice an "Infiltration Prohibited" stormwater hotspot? Determine Runoff Reduction RRv Provided cf Water Quality Volume Provided Sizing Criteria Notes Enter Volume of Stone Volume of stone shall account for 40% voids Enter Volume of System Volume of system shall exclude stone Water Quality Volume Depth of Bottom Stone Required Surface Area Enter Surface Area Provided Underground Infiltration (I-4) Design Point:Finley Street Residential Drainage Area Number Contributing Area (Acres) Impervious Area (Acres) Percent Impervious % Rv WQv (cf) Precipitation (in)Description 2 0.93 0.36 39 1,547 0.00 Underground Infiltration System 5 No No No 5.8 12 1524 Value Units WQv 1547 cf db 1.0 ft Ab 1,547 sf Ab 1654 sf Vs 1481 cf Vsys 2047 cf WQv 3528 cf 1,547 Enter Site Data For Drainage Area to be Treated by Practice Design Criteria Enter underlying soil infiltration rate (based on geotechnical testing, refer to Appendix D) Enter Surface Area Provided Volume of stone shall account for 40% voids Volume of system shall exclude stone Water Quality Volume Provided Enter pretreatment volume provided (cf) Sizing Criteria Notes Is the contributing area greater than 10 acres? Enter depth to seasonal high water table (ft) Enter depth to bedrock (ft) Determine Runoff Reduction RRv Provided cf Enter Volume of Stone Enter Volume of System Water Quality Volume Depth of Bottom Stone Required Surface Area Is the contributing area to the practice an "Infiltration Restricted" stormwater hotspot? Is the contributing area to the practice an "Infiltration Prohibited" stormwater hotspot? Project: Rise Finley Street Basin 1 Date: 6/19/2025 LEGEND Input- Output- 2.01 CFS WATER QUALITY VOLUME, WQV IMPERVIOUS COVER, I (%) RUNOFF COEFFICIENT, R V Ai=0.38 acres impervious RV=0.05+(I)(0.009) A= 0.94 acres total = 0.414 I= 40.43 % USE Rv = 0.414 90% RAINFALL EVENT NUMBER, P WATER QUALITY VOLUME, WQ V P=1.15 inches WQV=(P)(RV)(A)/12 WQV=0.037 AC-FT CN (COMPUTED) 90% RAINFALL EVENT NUMBER, P RUNOFF VOLUME, Q P= 1.15 inches Q= (WQv/A) x12 Q= 0.475904 inches CN (COMPUTED) CN= 1000/[10+5P+10Q-10(Q2+1.25QP)1/2] CN =91.19 UNIT PEAK DISCHARGE, qu INITIAL ABSTRACTION, Ia INITIAL ABSTRACTION / P Ia = (200/CN-2) Ia/P = 0.168 Ia= 0.193 TIME OF CONCENTRATION, tc UNIT PEAK DISCHARGE, qu tc=8.8 minutes qu=860 csm/in PEAK DISCHARGE, Qp DRAINAGE AREA, A PEAK DISCHARGE, Qp A= 0.00147 miles2 Qp= qu x A x Q Qp=0.60 CFS SEDIMENT STRIP SIZING FLOW RATE,Q* OPEN AREA FOR TREATMENT, a Q= 4.0 GPM/SF a= 225.00 SF AVAILABLE TREATEMENT FLOW, Q T *As per Lane Enterprises QT=2.01 CFS PROPOSED TREATMENT CAPACITY Wqv Peak Flow Worksheet/Sediment Strip Sizing Project: Rise Finley Street Basin 2 Date: 6/19/2025 LEGEND Input- Output- 6.11 CFS WATER QUALITY VOLUME, WQV IMPERVIOUS COVER, I (%) RUNOFF COEFFICIENT, R V Ai=1.41 acres impervious RV=0.05+(I)(0.009) A= 1.8 acres total = 0.755 I= 78.33 % USE Rv = 0.755 90% RAINFALL EVENT NUMBER, P WATER QUALITY VOLUME, WQ V P=1.15 inches WQV=(P)(RV)(A)/12 WQV=0.130 AC-FT CN (COMPUTED) 90% RAINFALL EVENT NUMBER, P RUNOFF VOLUME, Q P= 1.15 inches Q= (WQv/A) x12 Q= 0.86825 inches CN (COMPUTED) CN= 1000/[10+5P+10Q-10(Q2+1.25QP)1/2] CN =97.24 UNIT PEAK DISCHARGE, qu INITIAL ABSTRACTION, Ia INITIAL ABSTRACTION / P Ia = (200/CN-2) Ia/P = 0.049 Ia= 0.057 TIME OF CONCENTRATION, tc UNIT PEAK DISCHARGE, qu tc=6.1 minutes qu=1005 csm/in PEAK DISCHARGE, Qp DRAINAGE AREA, A PEAK DISCHARGE, Qp A= 0.00281 miles2 Qp= qu x A x Q Qp=2.45 CFS SEDIMENT STRIP SIZING FLOW RATE,Q* OPEN AREA FOR TREATMENT, a Q= 4.0 GPM/SF a= 686.00 SF AVAILABLE TREATEMENT FLOW, Q T *As per Lane Enterprises QT=6.11 CFS PROPOSED TREATMENT CAPACITY Wqv Peak Flow Worksheet/Sediment Strip Sizing Appendix E Grading/Drainage/Sediment, Erosion Control, and Landscaping Plan OF F I C E / AM E N I T Y S P A C E 1 - S T O R Y 3, 0 0 0 s f F O O T P R I N T PL A Y G R O U N D SH E D PA T I O APARTMENT BUILDING 3 - STORY 25,555 sf FOOTPRINT 71 UNITS FFE = 316.57 T GE N EVEV EVEV LA N S I N G E N G I N E E R I N G 7 H E M P H I L L P L A C E , S U I T E 2 3 0 MA L T A , N Y 1 2 0 2 0 (5 1 8 ) 8 9 9 - 5 2 4 3 RI S E - F I N L E Y S T R E E T R E S I D E N T I A L FI N L E Y S T R E E T , C I T Y O F S A R A T O G A S P R I N G S , S A R A T O G A C O U N T Y , N E W Y O R K PR E L I M I N A R Y / N O T FO R C O N S T R U C T I O N S W ST UTILITIES & GRADING PLAN OF F I C E / AM E N I T Y S P A C E 1 - S T O R Y 3, 0 0 0 s f F O O T P R I N T PL A Y G R O U N D SH E D PA T I O APARTMENT BUILDING 3 - STORY 25,555 sf FOOTPRINT 71 UNITS FFE = 316.57 T GE N EVEV EVEV LA N S I N G E N G I N E E R I N G 7 H E M P H I L L P L A C E , S U I T E 2 3 0 MA L T A , N Y 1 2 0 2 0 (5 1 8 ) 8 9 9 - 5 2 4 3 RI S E - F I N L E Y S T R E E T R E S I D E N T I A L FI N L E Y S T R E E T , C I T Y O F S A R A T O G A S P R I N G S , S A R A T O G A C O U N T Y , N E W Y O R K PR E L I M I N A R Y / N O T FO R C O N S T R U C T I O N EROSION & SEDIMENT CONTROL PLAN “” LA N S I N G E N G I N E E R I N G 7 H E M P H I L L P L A C E , S U I T E 2 3 0 MA L T A , N Y 1 2 0 2 0 (5 1 8 ) 8 9 9 - 5 2 4 3 RI S E - F I N L E Y S T R E E T R E S I D E N T I A L FI N L E Y S T R E E T , C I T Y O F S A R A T O G A S P R I N G S , S A R A T O G A C O U N T Y , N E W Y O R K PR E L I M I N A R Y / N O T FO R C O N S T R U C T I O N FABRIC DROP INLET PROTECTION5 1 STABILIZED CONSTRUCTION ENTRANCE SEDIMENT CONTROL FENCE2 4 RIPRAP OUTLET PROTECTION 3 MATERIAL STORAGE & SOIL STOCKPILE STABILIZATION DETAIL CONCRETE WASHOUT AREA6 Appendix F NYSDEC SPDES General Permit GP-0-25-001 PREFACE Pursuant to Section 402 of the Clean Water Act (CWA), and 40 CFR 122.26(b)(14)(x), (15)(i), and (15)(ii), stormwater discharges from certain construction activities are unlawful unless they are authorized by a National Pollutant Discharge Elimination System (NPDES) permit or by a state permit program. New York State administers the approved State Pollutant Discharge Elimination System (SPDES) program with permits issued in accordance with the New York State Environmental Conservation Law (ECL) Article 17, Titles 7 and 8, and Article 70, as well as 6 NYCRR Parts 621 and 750. Construction activities constitute construction of a point source and, therefore, pursuant to ECL sections 17-0505, 17-0701, and 17-0803, the owner or operator must have coverage under a SPDES permit prior to commencement of construction activities. The owner or operator cannot wait until there is an actual discharge from the construction site to obtain permit coverage. *Note: The italicized words/phrases within this permit are defined in Appendix A. NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES CONSTRUCTION GENERAL PERMIT (CGP) GP-0-25-001 FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES Table of Contents Part I. How to Obtain Coverage and General Requirements ..................................... 5 A. Eligibility Requirements ...................................................................................... 5 B. Types of Discharges Authorized ........................................................................ 9 C. Prohibited Discharges ...................................................................................... 10 D. Electronic Notice of Intent (eNOI) Submittal ..................................................... 10 E. General Requirements for Owners or Operators with Permit Coverage .......... 14 F. Permit Coverage for Discharges Authorized Under GP-0-20-001 .................... 18 G. Change of Owner or Operator .......................................................................... 19 Part II.Water Quality-Based Effluent Limitations ..................................................... 20 A. Maintaining Water Quality ................................................................................ 20 B. Effluent Limitations Applicable to Discharges from Construction Activities ...... 20 C. Post-Construction Stormwater Management Practice (SMP) Requirements ... 23 Part III. Stormwater Pollution Prevention Plan (SWPPP)......................................... 28 A. General SWPPP Requirements ....................................................................... 28 B. Required SWPPP Contents ............................................................................. 32 C. Required SWPPP Components by Project Type.............................................. 37 Part IV. Inspection and Maintenance Requirements ................................................ 37 A. General Construction Site Inspection and Maintenance Requirements ........... 37 B. Contractor Maintenance Inspection Requirements .......................................... 37 C. Qualified Inspector Inspection Requirements ................................................... 38 Part V. How to Terminate CGP Coverage .................................................................. 43 A. Electronic Notice of Termination (eNOT) Submittal.......................................... 43 Part VI. Record Retention and Reporting .................................................................. 45 A. Record Retention ............................................................................................. 46 B. Reporting ......................................................................................................... 46 Part VII. Standard Permit Requirements ................................................................... 46 A. Duty to Comply................................................................................................. 46 B. Need to Halt or Reduce Activity Not a Defense................................................ 46 C. Penalties .......................................................................................................... 46 D. False Statements ............................................................................................. 47 E. Re-Opener Clause ........................................................................................... 47 F. Duty to Mitigate ................................................................................................ 47 G. Requiring Another General Permit or Individual SPDES Permit....................... 47 H. Duty to Provide Information .............................................................................. 49 I. Extension ......................................................................................................... 49 J. Signatories and Certification ............................................................................ 50 K. Inspection and Entry ........................................................................................ 52 L. Confidentiality of Information ............................................................................ 53 M. Other Permits May Be Required ...................................................................... 53 N. NYSDEC Orders or Civil Decrees/Judgments.................................................. 53 O. Property Rights ................................................................................................ 53 P. Compliance with Interstate Standards.............................................................. 53 Q. Oil and Hazardous Substance Liability ............................................................. 54 R. Severability....................................................................................................... 54 S. NYSDEC Approved Forms ............................................................................... 54 APPENDIX A – Abbreviations and Definitions .......................................................... 55 Abbreviations ............................................................................................................. 55 Definitions .................................................................................................................. 56 APPENDIX B – Required SWPPP Components by Project Type............................. 64 Table 1....................................................................................................................... 64 Table 2....................................................................................................................... 66 APPENDIX C – Watersheds Requiring Enhanced Phosphorus Removal ............... 68 APPENDIX D – Impaired Waterbodies (by Construction Related Pollutants) ........ 74 APPENDIX E – List of NYSDEC Regional Offices ..................................................... 80 APPENDIX F – SWPPP Preparer Certification Form ................................................ 81 APPENDIX G – MS4 SWPPP Acceptance Form ........................................................ 83 APPENDIX H – NYCDEP SWPPP Acceptance/Approval Form ................................ 86 APPENDIX I – MS4 No Jurisdiction Form .................................................................. 89 APPENDIX J – Owner/Operator Certification Form .................................................. 91 Part I. Part I. How to Obtain Coverage and General Requirements To be covered under this permit, the owner or operator must meet all eligibility requirements in Part I.A. and follow the requirements for obtaining permit coverage in Part I.D., F., or G. A. Eligibility Requirements For a common plan of development or sale, the phase(s) that meet the eligibility requirements in Part I.A. may obtain coverage under this permit even if other phase(s) of the same common plan of development or sale do not meet the eligibility requirements and require an individual SPDES permit. 1. The owner’s or operator’s construction activities involve soil disturbances of: a. one or more acres; or b. less than one acre which are part of a common plan of development or sale that will ultimately disturb one or more acres; or c. less than one acre where NYSDEC has determined that a SPDES permit is required for stormwater discharges based on the potential for contribution to a violation of a water quality standard or for significant contribution of pollutants to surface waters of the State. i. 5,000 square feet or more, but less than one acre, and are in the New York City Watershed located east of the Hudson River, Appendix C Figure 1; or ii. 20,000 square feet or more, but less than one acre, within the municipal boundaries of the City of New York (NYC); or iii. less than 20,000 square feet which are part of a common plan of development or sale that will ultimately disturb 20,000 square feet or more, but less than one acre, within the municipal boundaries of NYC; or iv. that creates 5,000 square feet or more of impervious area within the municipal boundaries of NYC. 5 Part I.A.2. 2. Discharges from the owner’s or operator’s construction activities are/were not: a. already covered by a different SPDES permit; or b. covered under a different SPDES permit that was denied, terminated, or revoked; or c. identified in an expired individual SPDES permit that was not renewed; or d. required to obtain an individual SPDES permit or another general SPDES permit in accordance with Part VII.K. 3. If construction activities may adversely affect a species that is endangered or threatened, the owner or operator must obtain a: a. permit issued pursuant to 6 NYCRR Part 182 for the project; or b. letter issued by NYSDEC of non-jurisdiction pursuant to 6 NYCRR Part 182 for the project. 4. If construction activities have the potential to affect an historic property, the owner or operator must obtain one of the following: a. documentation that the construction activity is not within an archeological buffer area indicated on the sensitivity map, and that the construction activity is not located on or immediately adjacent to a property listed or determined to be eligible for listing on the National or State Registers of Historic Places, and that there is no new permanent building on the construction site within the following distances from a building, structure, or object that is more than 50 years old, or if there is such a new permanent building on the construction site within those parameters that NYS Office of Parks, Recreation and Historic Preservation (OPRHP), a Historic Preservation Commission of a Certified Local Government, or a qualified preservation professional has determined that the building, structure, or object more than 50 years old is not historically/archeologically significant: i. 1-5 acres of disturbance -20 feet; or ii. 5-20 acres of disturbance -50 feet; or 6 Part I.A.4.a.iii. iii. 20+ acres of disturbance -100 feet. b. NYSDEC consultation form sent to OPRHP,1 and copied to NYSDEC’s Agency Historic Preservation Officer (APO), and i. the State Environmental Quality Review Act (SEQR) Environmental Assessment Form (EAF) with a negative declaration or the Findings Statement, with documentation of OPRHP’s agreement with the resolution; or ii. documentation from OPRHP that the construction activity will result in No Impact; or iii. documentation from OPRHP providing a determination of No Adverse Impact; or iv. a Letter of Resolution signed by the owner or operator, OPRHP and the DEC APO which allows for this construction activity to be eligible for coverage under the general permit in terms of the State Historic Preservation Act (SHPA). c. documentation of satisfactory compliance with Section 106 of the National Historic Preservation Act for a coterminous project area: i. No Affect; or ii. No Adverse Affect; or iii. Executed Memorandum of Agreement. d. documentation that SHPA Section 14.09 has been completed by NYSDEC or another state agency. 5. If construction activities are subject to SEQR, the owner or operator must obtain documentation that SEQR has been satisfied. 6. If construction activities are not subject to SEQR, but subject to the equivalent environmental review from another New York State or federal agency, the 1 The consultation form can be submitted, along with other project information, through OPRHP's Cultural Resource Information System (CRIS) portal. If submitted through CRIS, paper copies of the consultation form need not be mailed. 7 Part I.A.6. owner or operator must obtain documentation that project review, pursuant to a process equivalent to SEQR from another New York State or federal agency, has been satisfied. 7. If construction activities require Uniform Procedures Act (UPA) Permits (see 6 NYCRR Part 621) from NYSDEC, or the equivalent from another New York State or federal agency, the owner or operator must: a. obtain all such necessary permits; or b. receive notification from NYSDEC pursuant to 6 NYCRR 621.3(a)(4) excepting Part I.A.7.a. 8. Construction activities are not eligible if they meet the following criteria in Part I.A.8.a. or b.: a. For linear transportation and linear utility project types, the construction activities: i. are within the watershed of surface waters of the State classified as AA or AA-S identified utilizing the Stormwater Interactive Map on NYSDEC’s website; and ii. are undertaken on land with no existing impervious cover; and iii. disturb two or more acres of steep slope. b. For all other project types, the construction activities: i. are within the watershed of surface waters of the State classified as AA or AA-S identified utilizing the Stormwater Interactive Map on NYSDEC’s website; and ii. are undertaken on land with no existing impervious cover; and iii. disturb one or more acres of steep slope. 8 Part I.B. B. Types of Discharges Authorized 1. The following stormwater discharges are authorized under this permit: a. Stormwater discharges, including stormwater runoff, snowmelt runoff, and surface runoff and drainage, associated with construction activity, are authorized under this permit provided that appropriate stormwater controls are designed, installed, and maintained in accordance with Part II. and Part III. b. Stormwater discharges from construction support activities at the construction site (including concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, and borrow areas) if the following requirements are met: i. The support activity is directly related to the construction site required to have permit coverage for stormwater discharges; and ii. The support activity is not a commercial operation, nor does it serve multiple unrelated construction sites; and iii. The support activity does not continue to operate beyond the completion of the construction activity at the site it supports; and iv. Stormwater controls are implemented in accordance with Part II. and Part III. for discharges from the support activity areas. 2. The following non-stormwater discharges associated with construction activity are authorized under this permit: a. Non-stormwater discharges listed in 6 NYCRR 750-1.2(a)(29)(vi), with the following exception: “Discharges from firefighting activities are authorized only when the firefighting activities are emergencies/unplanned”; and b. Non-stormwater discharges of waters to which other components have not been added that are used in accordance with the SWPPP to control dust or irrigate vegetation in stabilized areas; and c. Uncontaminated discharges from dewatering operations 9 Part I.B.3. 3. Authorized discharges of stormwater or authorized discharges of non- stormwater, commingled with a discharge authorized by a different SPDES permit and/or a discharge that does not require SPDES permit authorization, are also authorized under this permit. C. Prohibited Discharges 1. Non-stormwater discharges prohibited under this permit include but are not limited to: a. Wastewater from washout of concrete; and b. Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; and c. Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; and d. Soaps, solvents, or detergents used in vehicle and equipment washing or external building washdown; and e. Toxic or hazardous substances from a spill or other release. D. Electronic Notice of Intent (eNOI) Submittal To receive authorization in accordance with Part I.D.3.b., the owner or operator must submit a complete eNOI in accordance with the requirements in Part I.D. The eNOI contains questions to: ensure eligibility requirements in Part I.A. have been met; obtain owner or operator contact information; obtain the total area to be disturbed and the existing/future impervious areas (rounded to the nearest tenth of an acre); confirm Traditional Land Use Control MS4 Operator jurisdiction over construction projects; satisfy the EPA eRule requirements; confirm that the Water Quality-Based Effluent Limitations in Part II. have been met; demonstrate consideration of the future risks due to climate change in accordance with Part III.A.2.; and confirm that the other Stormwater Pollution Prevention Plan (SWPPP) requirements in Part III. have been met. 1. An eNOI may be submitted for: a. construction activities that are not part of a common plan of development or sale; or 10 Part I.D.1.b. b. an entire common plan of development or sale; or c. separate phase(s) of a common plan of development or sale if the following requirements are met: i. the common plan of development or sale meets the eligibility requirements of Part I.A.5. or 6.; and ii. the phase(s) meet(s) all other eligibility requirements of Part I.A.; and iii. Part III.C. Required SWPPP Components by Project Type is based on the common plan of development or sale, not the phase(s); or d. tree clearing that is associated with, or will support, a renewable energy generation, transmission, or storage project that meets Part I.A.5. and 6., if the tree clearing: i. meets all other eligibility requirements of Part I.A.; and ii. will occur in NYSDEC’s Regions 3-9; and iii. is not within ¼ mile of a bat hibernaculum protected pursuant to 6 NYCRR Part 182; and iv. will occur between November 1st and March 31st. 2. As prerequisites for submitting an eNOI, the owner or operator must: a. prepare a SWPPP for Part I.D.1.a., b., c., or d. in accordance with Part III.; and b. based on the following criteria, upload the following signature forms signed in accordance with Part VII.J. to the eNOI prior to submission: i. for all eNOIs: 1. the SWPPP Preparer Certification Form, Appendix F, signed by the SWPPP preparer; and 11 Part I.D.2.b.i.2. 2. the Owner/Operator Certification Form, Appendix J, signed by the owner or operator; and ii. if an eNOI includes construction activities within the municipal boundary(ies) of Traditional Land Use Control MS4 Operator(s) that will discharge to the MS4(s): 1. determine if the Traditional Land Use Control MS4 Operator(s) have review authority. A Traditional Land Use Control MS4 Operator does not have review authority where: a. the owner or operator of the construction activities in Part I.D.2.b.ii. is the same entity as the Traditional Land Use Control MS4 Operator identified in Part I.D.2.b.ii.; or b. there is a statute exempting the owner or operator from zoning review by the Traditional Land Use Control MS4 Operator; or c. there is no such statute per Part I.D.2.b.ii.1.b., the Traditional Land Use Control MS4 Operator concludes, after public hearing, that it does not have zoning review authority in accordance with Legal Memorandum LU14 Updated January 2020 “Governmental Immunity from Zoning and Other Legislation”; and 2. if the Traditional Land Use Control MS4 Operator(s) have review authority, submit the SWPPP to the Traditional Land Use Control MS4 Operator(s) for review and have: a. if outside the municipal boundaries of NYC: the MS4 SWPPP Acceptance Form, Appendix G, signed by the principal executive officer or ranking elected official from the Traditional Land Use Control MS4 Operator, or by a duly authorized representative of that person in accordance with Part VII.J.2.; or 12 Part I.D.2.b.ii.2.b. b. if within the municipal boundaries of NYC: The City of New York Department of Environmental Protection (NYCDEP) SWPPP Acceptance/Approval Form, Appendix H, signed by the principal executive officer or ranking elected official from the Traditional Land Use Control MS4 Operator, or by a duly authorized representative of that person in accordance with Part VII.J.2.; and 3. if the Traditional Land Use Control MS4 Operator does not have review authority, have the MS4 No Jurisdiction Form, Appendix I, signed by the principal executive officer or ranking elected official from the Traditional Land Use Control MS4 Operator, or by a duly authorized representative of that person in accordance with Part VII.J.2. 3. Submitting an eNOI: a. The owner or operator must submit a complete Notice of Intent electronically using a NYSDEC approved form.2 b. The owner or operator is authorized to commence construction activity as of the authorization date indicated in the Letter of Authorization (LOA), which is sent by NYSDEC after a complete eNOI is submitted. i. If an eNOI is received for a SWPPP that deviates from one of the technical standards but demonstrates equivalence in accordance with Part III.B.1.a.ii. or Part III.B.2.b.ii., if the SWPPP includes construction activities that are not within the municipal boundary(ies) of Traditional Land Use Control MS4 Operator(s), and/or if the SWPPP includes construction activities within the municipal boundary(ies) of Traditional Land Use Control MS4 Operator(s) that do not have review authority in accordance with Part I.D.2.b.ii.1., the authorization date indicated in the LOA will be 60 business days after the eNOI submission date. 2 Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c) or (d). All waiver requests must be submitted to Stormwater_info@dec.ny.gov or NYSDEC, Bureau of Water Permits, 625 Broadway, 4th Floor, Albany, New York 12233-3505. 13 Part I.D.3.c. c. If Traditional Land Use Control MS4 Operator(s) have review authority in accordance with Part I.D.2.b.ii.2., the owner or operator must, within five business days of receipt of the LOA, send an electronic copy of the LOA to the Traditional Land Use Control MS4 Operator(s) with review authority. E. General Requirements for Owners or Operators with Permit Coverage 1. As of the date the LOA is received, the owner or operator must make the eNOI, SWPPP, and LOA available for review and copying in accordance with the requirements in Part VII.H. When applicable, as of the date an updated LOA is received, the owner or operator must make the updated LOA available for review and copying in accordance with the requirements in Part VII.H. 2. The owner or operator must ensure compliance with all requirements of this permit and that the provisions of the SWPPP, including any changes made to the SWPPP in accordance with Part III.A.5., are properly implemented and maintained from the commencement of construction activity until: a. all areas of disturbance have achieved final stabilization; and b. the owner’s or operator’s coverage under this permit is terminated in accordance with Part V.A.5.a. 3. As of the date of the commencement of construction activities until Part I.E.2.a. and b. have been met, the owner or operator must maintain at the construction site, a copy of: a. all documentation necessary to demonstrate eligibility with this permit; and b. this permit; and c. the SWPPP; and d. the signed SWPPP Preparer Certification Form; and e. the signed MS4 SWPPP Acceptance Form or signed NYCDEP SWPPP Acceptance/Approval Form or signed MS4 No Jurisdiction Form (when applicable); and f. the signed Owner/Operator Certification Form; and 14 Part I.E.3.g. g. the eNOI; and h. the LOA; and i. the LOA transmittal to the Traditional Land Use Control MS4 Operator in accordance with Part I.D.3.c. (when applicable). 4. The owner or operator must maintain at the construction site, until Part I.E.2.a. and b. have been met, as of the date the documents become final or are received, a copy of the: a. responsible contractor’s or subcontractor’s certification statement(s) in accordance with Part III.A.7.; and b. inspection reports in accordance with Part IV.C.4. and 6.; and c. Request to Disturb Greater Than Five Acres and the Authorization Letter to Disturb Greater Than Five Acres in accordance with Part I.E.6. (when applicable); and d. Request to Continue Coverage and the Letter of Continued Coverage (LOCC) in accordance with Part I.F.2. and 4. (when applicable); and e. The updated LOA(s) in accordance with Part I.E.9. (when applicable). 5. The owner or operator must maintain the documents in Part I.E.3. and 4. in a secure location, such as a job trailer, on-site construction office, or mailbox with lock. The secure location must be accessible during normal business hours to an individual performing a compliance inspection. The documents must be paper documents unless electronic documents are accessible to the inspector during an inspection to the same extent as a paper copy stored at the site would be. If electronic documents are kept on site, the owner or operator must maintain functional equipment on site available to an inspector during normal hours of operation such that an inspector may view the electronic documents in a format that can be read in a similar manner as a paper record and in a legally dependable format with no less evidentiary value than their paper equivalent. 6. The owner or operator must meet the following requirements prior to disturbing greater than five acres of soil at any one time: a. The owner or operator must submit a written Request to Disturb Greater Than Five Acres to: 15 Part I.E.6.a.i. i. NYSDEC’s Regional Office Division of Water staff based on the project location, Appendix E, if a Traditional Land Use Control MS4 Operator does not have review authority in accordance with Part I.D.2.b.ii.1.; or ii. the Traditional Land Use Control MS4 Operator, if a Traditional Land Use Control MS4 Operator has review authority in accordance with Part I.D.2.b.ii.1.; or iii. NYSDEC’s Regional Office Division of Water staff based on the project location, Appendix E, and each involved Traditional Land Use Control MS4 Operator, if the project spans multiple municipalities with more than one Traditional Land Use Control MS4 Operator involved with review authority in accordance with Part I.D.2.b.ii.1. b. The written Request to Disturb Greater Than Five Acres must include: i. The SPDES permit identification number (Permit ID); and ii. Full technical justification demonstrating why alternative methods of construction that would result in five acres of soil disturbance or less at any one time are not feasible; and iii. The phasing plan for the project and sequencing plans for all phases from the SWPPP in accordance with Part III.B.1.d.; and iv. Plans with locations and details of erosion and sediment control practices such that the heightened concern for erosion when disturbing greater than five acres at one time has been addressed; and v. Acknowledgment that “the owner or operator will comply with the requirements in Part IV.C.2.b.”; and vi. Acknowledgment that “the owner or operator will comply with the requirements in Part II.B.1.b.” c. The owner or operator must be in receipt of an Authorization Letter to Disturb Greater Than Five Acres, which will include when the 16 Part I.E.6.c. authorization begins and ends and indicate a maximum area (acres) of soil disturbance allowed at any one time, from: i. NYSDEC, if Part I.E.6.a.i. or iii. apply; or ii. the Traditional Land Use Control MS4 Operator, if Part I.E.6.a.ii. applies. 7. Upon a finding of significant non-compliance with the practices described in the SWPPP or violation of this permit, NYSDEC may order an immediate stop to all construction activity at the site until the non-compliance is remedied. The stop work order must be in writing, describe the non-compliance in detail, and be sent to the owner or operator. 8. If any human remains or archaeological remains are encountered during excavation, the owner or operator must immediately cease, or cause to cease, all construction activity in the area of the remains and notify the appropriate Regional Water Engineer (RWE).3 Construction activity shall not resume until written permission to do so has been received from the RWE. 9. To be authorized to implement modifications to the information previously submitted in the eNOI, the owner or operator must: a. notify NYSDEC via email at Stormwater_info@dec.ny.gov requesting access to update the eNOI; and b. update the eNOI to reflect the modifications and resubmit the eNOI in accordance with Part I.D.; and c. receive an updated LOA. 10.The eNOI, SWPPP, LOA, updated LOAs (when applicable), and inspection reports required by this permit are public documents that the owner or operator must make available for review and copying by any person within five business days of the owner or operator receiving a written request by any such person to review these documents. Copying of documents will be done at the requester’s expense. 3 The Regional Water Manager where a DEC Region does not have a RWE. 17 Part I.F. F. Permit Coverage for Discharges Authorized Under GP-0-20-001 When applicable: 1. Upon the effective date of this permit, an owner or operator of a construction activity, with coverage under GP-0-20-001, will have interim coverage under GP-0-25-001 for 45 calendar days starting on the effective date of GP-0-25- 001 so long as the owner or operator maintains compliance with all applicable requirements of this permit. 2. Within 30 calendar days of the effective date of this permit, the owner or operator, with coverage under GP-0-20-001, must submit a complete Request to Continue Coverage electronically using a NYSDEC approved form,4 which contains the information identified in Part I.F.3. below, if: a. the owner or operator continues to implement the SMP component in conformance with the technical standards in place at the time of initial project authorization; and b. the owner or operator will comply with all non-design requirements of GP- 0-25-001. 3. The Request to Continue Coverage form contains questions to: ensure eligibility requirements in Part I.A. have been met; verify owner or operator contact information; verify the permit identification number; verify the original eNOI submission ID, if applicable; verify Part I.F.2.a. and b.; verify the version of the Design Manual that the technical/design components conform to; and receive an updated Owner/Operator Certification Form, Appendix I. 4. The owner or operator has obtained continued coverage under GP-0-25-001 as of the date indicated in the LOCC, which is sent by NYSDEC after a complete Request to Continue Coverage form is submitted. 5. If the owner or operator does not submit the Request to Continue Coverage form in accordance with Part I.F.2. and 3., coverage under this permit is automatically terminated after interim coverage expires. 4 Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c) or (d). All waiver requests must be submitted to Stormwater_info@dec.ny.gov or NYSDEC, Bureau of Water Permits, 625 Broadway, 4th Floor, Albany, New York 12233-3505. 18 Part I.G. G. Change of Owner or Operator When applicable: 1. When property ownership changes, or when there is a change in operational control over the construction plans and specifications, the following process applies: a. The new owner or operator must meet the applicable prerequisites for submitting an eNOI in accordance with Part I.D.2.; and b. The new owner or operator must submit an eNOI in accordance with Part I.D.3.; and c. Permit coverage for the new owner or operator will be effective upon receipt of the LOA in accordance with Part I.D.3.b.; and d. The new owner or operator, upon receipt of their LOA, must provide their Permit ID to the original owner or operator; and e. If the original owner or operator will no longer be the owner or operator of the construction activity identified in the original owner’s or operator’s eNOI, the original owner or operator, upon receipt of the new owner’s or operator’s Permit ID in accordance with Part I.G.1.d., must submit to NYSDEC a completed eNOT in accordance with Part V. that includes the name and Permit ID of the new owner or operator; or f. If the original owner or operator maintains ownership of a portion of the construction activity, the original owner or operator must maintain their coverage under the permit by modifying their eNOI; modifications to the eNOI must include: i. the revised area of disturbance and/or impervious area(s); and ii. the revised SMP information, if applicable; and iii. a narrative description of what has changed; and iv. the new owner’s or operator’s Permit ID for the portion of the project removed from the eNOI. Owners or operators must follow Part I.E.9. to modify the eNOI. 19 Part II. Part II. Water Quality-Based Effluent Limitations A. Maintaining Water Quality NYSDEC expects that compliance with the requirements of this permit will control discharges necessary to meet applicable water quality standards. It shall be a violation of the ECL for any discharge to either cause or contribute to a violation of the following water quality standards as contained in Parts 700 through 705 of Title 6 of the Official Compilation of Codes, Rules and Regulations of the State of New York: 1. There must be no increase in turbidity that will cause a substantial visible contrast to natural conditions; and 2. There must be no increase in suspended, colloidal or settleable solids that will cause deposition or impair the waters for their best usages; and 3. There must be no residue from oil and floating substances, nor visible oil film, nor globules of grease. If there is evidence indicating that the stormwater discharges authorized by this permit are causing, have the reasonable potential to cause, or are contributing to a violation of the water quality standard, the owner or operator must take appropriate corrective action in accordance with Part IV.C.5. of this permit and document in accordance with Part IV.C.4. of this permit. To address the water quality standard violation the owner or operator must include and implement appropriate controls in the SWPPP to correct the problem or obtain an individual SPDES permit. If, despite compliance with the requirements of this permit, it is demonstrated that the stormwater discharges authorized by this permit are causing or contributing to a violation of water quality standards, or if NYSDEC determines that a modification of this permit is necessary to prevent a violation of water quality standards, the authorized discharges will no longer be eligible for coverage under this permit, and the owner or operator must obtain an individual SPDES permit prior to further discharges from the construction site. B. Effluent Limitations Applicable to Discharges from Construction Activities Discharges authorized by this permit must achieve, at a minimum, the effluent limitations in Part II.B.1.a., b., c., d., and e. These limitations represent the 20 Part II.B. degree of effluent reduction attainable by the application of best practicable technology currently available. 1. Erosion and Sediment Control Requirements -The owner or operator must select, design, install, implement, and maintain control measures to minimize the discharge of pollutants and prevent a violation of the water quality standards. The selection, design, installation, implementation, and maintenance of these control measures must meet the non-numeric effluent limitations in Part II.B.1.a., b., c., d., and e. and be in accordance with the New York State Standards and Specifications for Erosion and Sediment Control (BB), dated November 2016, using sound engineering judgment. Where control measures are not designed in conformance with the design criteria included in the technical standard, the owner or operator must include in SWPPP the reason(s) for the deviation, or alternative design, and provide information in the SWPPP demonstrating that the deviation or alternative design is equivalent to the technical standard. a. Erosion and Sediment Controls. At a minimum, erosion and sediment controls must be selected, designed, installed, implemented, and maintained to: i. Minimize soil erosion through application of runoff control and soil stabilization control measure to minimize pollutant discharges; and ii. Control stormwater discharges, including both peak flow rates and total stormwater volume, to minimize channel and streambank erosion and scour in the immediate vicinity of the discharge points; and iii. Minimize the amount of soil exposed during construction activity; and iv. Minimize the disturbance of steep slope; and v. Minimize sediment discharges from the site; and vi. Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas and maximize stormwater infiltration to reduce pollutant discharges, unless infeasible; and vii. Minimize soil compaction. Minimizing soil compaction is not required 21 Part II.B.1.a.vii. where the intended function of a specific area of the site dictates that it be compacted; and viii. Unless infeasible, preserve a sufficient amount of topsoil to complete soil restoration and establish a uniform, dense vegetative cover; and ix. Minimize dust. On areas of exposed soil, minimize dust through the appropriate application of water or other dust suppression techniques to control the generation of pollutants that could be discharged from the site. b. Soil Stabilization. In areas where soil disturbance activity has ceased, whether permanently or temporarily ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within 14 calendar days from the date the current soil disturbance activity ceased. For construction sites that directly discharge to one of the 303(d) segments listed in Appendix D, or are located in one of the watersheds listed in Appendix C, or are authorized to disturb greater than five acres in accordance with Part I.E.5.a.viii., the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven calendar days from the date the soil disturbance activity ceased. c. Dewatering. Discharges from dewatering activities, including discharges from dewatering of trenches and excavations, must be managed by appropriate control measures. d. Pollution Prevention Measures. Select, design, install, implement, and maintain effective pollution prevention measures to minimize the discharge of pollutants and prevent a violation of the water quality standards. At a minimum, such measures must be selected, designed, installed, implemented, and maintained to: i. Minimize the discharge of pollutants from equipment and vehicle washing, wheel wash water, and other wash waters. Soaps, detergents and solvents cannot be used; and ii. Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste, hazardous and toxic waste, and other materials present on the site to precipitation 22 Part II.B.1.d.ii. and to stormwater. Minimization of exposure is not required in cases where the exposure to precipitation and to stormwater will not result in a discharge of pollutants, or where exposure of a specific material or product poses little risk of stormwater contamination (such as final products and materials intended for outdoor use); and iii. Prevent the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures. e. Surface Outlets. When discharging from basins and impoundments, the surface outlets must be designed, constructed, and maintained in such a manner that sediment does not leave the basin or impoundment and that erosion at or below the outlet does not occur. C. Post-Construction Stormwater Management Practice (SMP) Requirements 1. The owner or operator of a construction activity that requires post- construction SMPs, in accordance with Part III.C., must select, design, install, implement, and maintain the SMPs to meet the performance criteria in the New York State Stormwater Management Design Manual, dated July 31, 2024 (DM), using sound engineering judgment. Where SMPs are not designed in conformance with the performance criteria in the DM, the owner or operator must include in the SWPPP the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. The owner or operator of a construction activity, that requires SMPs in accordance with Part III.C., must design the practices to meet the applicable sizing criteria in Part II.C.2.a., b., c., or d. a. Sizing Criteria for New Development i. Runoff Reduction Volume (RRv) and Water Quality Volume (WQv): 1. Reduce the total WQv by application of RR techniques and standard SMPs with RRv capacity. The total WQv must be calculated in accordance with the criteria in Section 4.2 of the DM; or 23 Part II.C.2.a.i.2. 2. Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the requirements in Part II.C.2.a.i.1. due to site limitations must direct runoff from all newly constructed impervious areas to a RR technique or standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv must be documented in the SWPPP. For each impervious area that is not directed to a RR technique or standard SMP with RRv capacity, the SWPPP must include documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. In no case shall the runoff reduction achieved from the newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section 4.4 of the DM. The remaining portion of the total WQv that cannot be reduced must be treated by application of standard SMPs. ii. Channel Protection Volume (CPv): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event, remaining after runoff reduction. Where a CPv control orifice is provided, the minimum orifice size must be 3 inches, with acceptable external trash rack or orifice protection. The CPv requirement does not apply when: 1. Reduction of the entire CPv is achieved by application of runoff reduction techniques or infiltration systems; or 2. The 1-year post-development peak discharge is less than or equal to 2.0 cfs without detention or velocity controls; or 3. The site directly discharges into a fifth order or larger water body (stream, river, or lake), or tidal waters, where the increase in smaller flows will not impact the stream bank or channel integrity. However, the point of discharge must be adequately protected against scour and erosion by the increased peak discharge. 24 Part II.C.2.a.iii. iii. Overbank Flood Control Criteria (Qp): Requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate (Qp) to predevelopment rates. The Qp requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams, or 2. A downstream analysis reveals that overbank control is not required. iv. Extreme Flood Control Criteria (Qf): Requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate (Qf) to predevelopment rates. The Qf requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams, or 2. A downstream analysis reveals that overbank control is not required. b. Sizing Criteria for New Development in Enhanced Phosphorus Removal Watersheds i. Runoff Reduction Volume (RRv) and Water Quality Volume (WQv): 1. Reduce the WQv by application of RR techniques and standard SMPs with RRv capacity. The total WQv is the runoff volume from the 1-year, 24-hour design storm over the post-developed watershed and must be calculated in accordance with the criteria in Section 4.3 of the DM; or 2. Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part II.C.2.b.i.1. due to site limitations must direct runoff from all newly constructed impervious areas to a RR technique or standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv must be documented in the SWPPP. For each impervious area that is not directed to a RR technique or standard SMP with RRv capacity, the SWPPP must include 25 Part II.C.2.b.i.2. documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. In no case shall the runoff reduction achieved from the newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section 4.5 of the DM. The remaining portion of the total WQv that cannot be reduced must be treated by application of standard SMPs. ii. Channel Protection Volume (CPv): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event, remaining after runoff reduction. Where a CPv control orifice is provided, the minimum orifice size must be 3 inches, with acceptable external trash rack or orifice protection. The CPv requirement does not apply when: 1. Reduction of the entire CPv is achieved by application of runoff reduction techniques or infiltration systems; or 2. The 1-year post-development peak discharge is less than or equal to 2.0 cfs; or 3. The site directly discharges to tidal waters, or a fifth order or larger water body (stream, river, or lake) where the increase in smaller flows will not impact the stream bank or channel integrity. However, the point of discharge must be adequately protected against scour and erosion by the increased peak discharge. iii. Overbank Flood Control Criteria (Qp): Requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate (Qp) to predevelopment rates. The Qp requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams; or 2. A downstream analysis reveals that overbank control is not required. 26 Part II.C.2.b.iv. iv. Extreme Flood Control Criteria (Qf): Requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate (Qf) to predevelopment rates. The Qf requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams; or 2. A downstream analysis reveals that overbank control is not required. c. Sizing Criteria for Redevelopment Activity i. Water Quality Volume (WQv): The WQv treatment objective for redevelopment activity must be addressed by one of the following options, as outlined in Section 9.2.1. Redevelopment activities located in an Enhanced Phosphorus Removal Watershed (see Part III.B.3. and Appendix C) must calculate the WQv in accordance with Section 4.3 of the DM. All other redevelopment activities must calculate the WQv in accordance with Section 4.2 of the DM. 1. Reduce the existing impervious cover by a minimum of 25% of the total disturbed, impervious area. The Soil Restoration criteria in Section 5.1.6 of the DM must be applied to all newly created pervious areas; or 2. Capture and treat 100% of the required WQv, for a minimum of 25% of the disturbed redevelopment impervious area, by implementation of standard SMPs or reduced by application of runoff reduction techniques; or 3. Capture and treat 100% of the required WQv, for a minimum of 75% of the disturbed redevelopment impervious area, by implementation of a volume-based alternative SMP, as defined in Section 9.4 of the DM; or 4. Capture and treat 100% of the required WQv, for a minimum of 75% of the disturbed redevelopment impervious area, by implementation of a flow-through alternative SMP sized to treat the peak rate of runoff from the WQv design storm; or 27 Part II.C.2.c.i.5. 5. Application of a combination of 1 through 4 above that provide a weighted average of at least two of the above methods. Application of this method must be in accordance with the criteria in Section 9.2.1(A)(V) of the DM; or 6. If there is an existing SMP located on the site that captures and treats runoff from the impervious area that is being disturbed, the WQv treatment option selected must, at a minimum, provide treatment equal to the treatment that was being provided by the existing practice(s) if that treatment is greater than the treatment required by options 1 through 5 above. ii. Channel Protection Volume (CPv) is not required if there is 0% change to hydrology that increases the discharge rate and volume from the project site. iii. Overbank Flood Control (Qp) is not required if there is 0% change to hydrology that increases the discharge rate from the project site. iv. Extreme Flood Control (Qf) is not required if there is 0% change to hydrology that increases the discharge rate from the project site. d. Sizing Criteria for Combination of Redevelopment Activity and New Development Construction projects, that include both new development and redevelopment activity, must use SMPs that meet the sizing criteria calculated as an aggregate of the sizing criteria in Part II.C.2.a. or b. for the new development portion of the project and Part II.C.2.c. for the redevelopment activity portion of the project. Part III. Stormwater Pollution Prevention Plan (SWPPP) A. General SWPPP Requirements 1. A SWPPP must be prepared and implemented by the owner or operator of all construction activity covered by this permit. All authorized discharges must be identified in the SWPPP. The SWPPP must document the selection, design, installation, implementation and maintenance of the control measures and 28 Part III.A.1. practices that will be used to meet the effluent limitations in Part II.B. and, where applicable, the SMP requirements in Part II.C. 2. The SWPPP must demonstrate consideration in narrative format of the future physical risks due to climate change pursuant to the Community Risk and Resiliency Act (CRRA), 6 NYCRR Part 490, and associated guidance. a. The owner or operator must consider: i. the following physical risks due to climate change: (i) increasing temperature; and (ii) increasing precipitation; and (iii) increasing variability in precipitation, including chance of drought; and (iv) increasing frequency and severity of flooding; and (v) rising sea level; and (vi) increasing storm surge; and (vii) shifting ecology. ii. for each of the following: (i) overall site planning; and (ii) location, elevation, and sizing of: a. control measures and practices; and b. conveyance system(s); and c. detention system(s). 3. The SWPPP must describe the erosion and sediment control practices and where required, SMPs that will be used and/or constructed to reduce the pollutants in stormwater discharges and to assure compliance with the 29 Part III.A.3. requirements of this permit. In addition, the SWPPP must identify potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges. 4. All SWPPPs, that require the SMP component in accordance with Part III.B.2., must be prepared by a qualified professional. 5. The owner or operator must keep the SWPPP current so that, at all times, it accurately documents the erosion and sediment control practices that are being used or will be used during construction, and all SMPs that will be constructed on the site. At a minimum, the owner or operator must modify the SWPPP, including construction drawings: a. whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharges from the site; and b. whenever there is a change in design, construction, or operation at the construction site that has or could have an effect on the discharge of pollutants; and c. to address issues or deficiencies identified during an inspection by the qualified inspector, NYSDEC, or other regulatory authority; and d. to document the final construction conditions in an as-built drawing. 6. NYSDEC may notify the owner or operator at any time that the SWPPP does not meet one or more of the minimum requirements of this permit. The notification must be in writing and identify the provisions of the SWPPP that require modification. Within fourteen (14) calendar days of such notification, or as otherwise indicated by NYSDEC, the owner or operator must make the required changes to the SWPPP and submit written notification to NYSDEC that the changes have been made. If the owner or operator does not respond to NYSDEC’s comments in the specified time frame, NYSDEC may suspend the owner’s or operator’s coverage under this permit or require the owner or operator to obtain coverage under an individual SPDES permit in accordance with Part II.D.4. 7. Prior to the commencement of construction activity, the owner or operator must identify the contractor(s) and subcontractor(s) that will be responsible for installing, constructing, repairing, replacing, inspecting, and maintaining the erosion and sediment control practices included in the SWPPP and the 30 Part III.A.7. contractor(s) and subcontractor(s) that will be responsible for constructing the SMPs included in the SWPPP. The owner or operator must have each of the contractors and subcontractors identify at least one person from their company to be trained contractor that will be responsible for implementation of the SWPPP. The owner or operator must ensure that at least one trained contractor is on site daily when soil disturbance activities are being performed. The owner or operator must have each of the contractors and subcontractors identified above sign a copy of the following certification statement below before the commencement of construction activities: "I hereby certify under penalty of law that I understand and agree to comply with the requirements of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the requirements of the most current version of the New York State Pollutant Discharge Elimination System (SPDES) Construction General Permit (CGP) for Stormwater Discharges from Construction Activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I am aware that there are significant penalties for submitting false information, that I do not believe to be true, including the possibility of fine and imprisonment for knowing violations" In addition to providing the certification statement above, the certification page must also identify the specific elements of the SWPPP that each contractor and subcontractor will be responsible for and include the name and title of the person providing the signature; the name and title of the trained contractor responsible for SWPPP implementation; the name, address and telephone number of the contracting firm; the address (or other identifying description) of the site; and the date the certification statement is signed. The owner or operator must attach the certification statement(s) to the copy of the SWPPP that is maintained at the construction site. If new or additional contractors are hired to implement measures identified in the SWPPP after the commencement of construction activities, they must also sign the certification statement and provide the information listed above prior to performing construction activities. 31 Part III.B. B. Required SWPPP Contents 1. Erosion and sediment control component -The owner or operator must prepare a SWPPP that includes erosion and sediment control practices. a. Erosion and sediment control practices must be designed: i. in conformance with the BB; or ii. equivalent to the BB if deviating from Part III.B.1.a.i. b. If the erosion and sediment control practices are designed in conformance with Part III.B.1.a.ii., the SWPPP must include a demonstration of equivalence to the BB. c. At a minimum, the erosion and sediment control component of the SWPPP must include the following: i. Background information about the scope of the project, including the location, type and size of project; and ii. A site map/construction drawing(s) with north arrows for the project, including a general location map. At a minimum, the site map must show the total site area; all improvements; areas of disturbance; areas that will not be disturbed; existing vegetation; on-site and adjacent off-site surface water(s); floodplain/floodway boundaries; wetlands and drainage patterns that could be affected by the construction activity; existing and final contours; locations of different soil types with boundaries; material, waste, borrow or equipment storage areas located on adjacent properties; and location(s) of the stormwater discharge(s) and receiving surface water(s); and iii. A description of the soil(s) present at the site, including an identification of the Hydrologic Soil Group (HSG); and iv. A phasing plan for the project and sequencing plans for all phases, both of which must address clearing and grubbing, excavation and grading, utility and infrastructure installation, final stabilization, 32 Part III.B.1.c.iv. and any other construction activity at the site that will result in soil disturbance. 1. The phasing plan must include: a. a map delineating and labeling the limits of soil disturbance for all phases of a project; and b. a table identifying the order and intended schedule of when each phase will begin and end its sequencing plan. The table must identify the total disturbed area for each phase at any one time and the total disturbed area for the overall project at any one time all on one timeline showing all overlapping quantities of disturbed area at any one time; and 2. A sequencing plan for a specific phase must include: a. a table indicating the order and intended schedule of construction activities within a phase, and corresponding construction drawings with a description of the work to be performed; and b. all permanent and temporary stabilization measures; and v. A description of the minimum erosion and sediment control practices to be installed or implemented for each construction activity that will result in soil disturbance. Include a schedule that identifies the timing of initial placement or implementation of each erosion and sediment control practice and the minimum time frames that each practice should remain in place or be implemented; and vi. A site map/construction drawing(s) showing the specific location(s), size(s), and length(s) of each erosion and sediment control practice; and vii. The dimensions, material specifications, installation details, and operation and maintenance requirements for all erosion and sediment control practices. Include the location and sizing of any 33 Part III.B.1.c.vii. temporary sediment basins and structural practices that will be used to divert flows from exposed soils; and viii. A maintenance inspection schedule for the contractor(s) and subcontractor(s) identified in Part III.A.7. to ensure continuous and effective operation of the erosion and sediment control practices. The maintenance inspection schedule must be in accordance with the requirements in the BB technical standard; and ix. A description of the pollution prevention measures that will be used to control litter, construction chemicals and construction debris from becoming a pollutant source in the stormwater discharges; and x. A description and location of any stormwater discharges associated with industrial activity other than construction at the site, including, but not limited to, stormwater discharges from asphalt plants and concrete plants located on the construction site; and xi. Identification of any elements of the design that are not in conformance with the design criteria in the BB technical standard. Include the reason for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. SMP component – The owner or operator of construction activity identified in Table 2 of Appendix B must prepare a SWPPP that includes SMPs. a. SMPs must be designed in conformance with the applicable sizing criteria in Part II.C.2.a., c., or d.; and b. SMPs must be designed in conformance with the performance criteria: i. in the DM; or ii. equivalent to the DM if deviating from Part III.B.2.b.i.; or iii. in the New York State Stormwater Management Design Manual, dated January 2015 (2015 Design Manual), or equivalent to it, if the following criteria are met: 34 Part III.B.2.b.iii.1. 1. The eNOI is submitted in accordance with Part I.D. before January 29, 2027 for construction activities that are either: a. subject to governmental review and approval: i. where the owner or operator made any application to that governmental entity prior to the effective date of this permit; and ii. such application included a SWPPP developed using the 2015 Design Manual or equivalent to it; or b. not subject to governmental review and approval: i. where a fiscal allocation for the construction activities has been developed and approved by a governmental entity; and ii. the SWPPP was developed using the 2015 Design Manual or equivalent to it; and c. If SMPs are designed in conformance with Part III.B.2.b.ii., the SWPPP must include the reason(s) for the deviation or alternative design and a demonstration of equivalence to the DM; and d. If SMPs are designed in conformance with Part III.B.2.b.iii., the SWPPP must include supporting information or documentation demonstrating that Part III.B.2.b.iii.1.a. or b. apply; and e. The SMP component of the SWPPP must include the following: i. Identification of all SMPs to be constructed as part of the project, including which option the SMP designs conform to, either Part III.B.2.b.i., ii., or iii. Include the dimensions, material specifications and installation details for each SMP; and ii. A site map/construction drawing(s) showing the specific location and size of each SMP; and 35 Part III.B.2.e.iii. iii. A Stormwater Modeling and Analysis Report that includes: (i) Map(s) showing pre-development conditions, including watershed/subcatchments boundaries, flow paths/routing, and design points; and (ii) Map(s) showing post-development conditions, including watershed/subcatchments boundaries, flow paths/routing, design points and SMPs; and (iii) Results of stormwater modeling (i.e. hydrology and hydraulic analysis) for the required storm events. Include supporting calculations (model runs), methodology, and a summary table that compares pre-and post-development runoff rates and volumes for the different storm events; and (iv) Summary table, with supporting calculations, which demonstrates that each SMP has been designed in conformance with the sizing criteria included in the DM; and (v) Identification of any sizing criteria that is not required based on the requirements included in Part II.C.; and (vi) Identification of any elements of the design that are not in conformance with the performance criteria in the DM. Include the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the DM. iv. Soil testing results and locations (test pits, borings); and v. Infiltration test results, when required in accordance with Part III.B.2.a.; and vi. An operations and maintenance plan that includes inspection and maintenance schedules and actions to ensure continuous and effective operation of each SMP. The plan must identify the entity 36 Part III.B.2.e.vi. that will be responsible for the long-term operation and maintenance of each practice; and 3. Enhanced Phosphorus Removal Standards -The owner or operator of construction activity identified in Table 2 of Appendix B that is located in a watershed identified in Appendix C must prepare a SWPPP that includes SMPs designed in conformance with the applicable sizing criteria in Part II.C.2.b., c., or d. and the performance criteria Enhanced Phosphorus Removal Standards included in the DM. At a minimum, the SMP component of the SWPPP must meet the requirements of Part III.B.2. C. Required SWPPP Components by Project Type Owners or operators of construction activities, identified in Table 1 of Appendix B, are required to prepare a SWPPP that only includes erosion and sediment control practices designed in accordance with Part III.B.1. Owners or operators of the construction activities, identified in Table 2 of Appendix B, must prepare a SWPPP that also includes SMPs designed in accordance with Part III.B.2 or 3. For the entire area of disturbance, including the entire common plan of development or sale if applicable, the owner or operator must evaluate every bullet from Appendix B Table 1 and Table 2 separately. If bullets from both Table 1 and Table 2 apply, the SWPPP must include erosion and sediment control practices for all construction activities but SMPs for only those portions of the construction activities that fall under Table 2 bullet(s). Part IV. Inspection and Maintenance Requirements A. General Construction Site Inspection and Maintenance Requirements 1. The owner or operator must ensure that all erosion and sediment control practices (including pollution prevention measures), and all SMPs identified in the SWPPP, are inspected and maintained in accordance with Part IV.B. and C. B. Contractor Maintenance Inspection Requirements 1. The owner or operator of each construction activity, identified in Tables 1 and 2 of Appendix B, must have a trained contractor inspect the erosion and sediment control practices and pollution prevention measures being 37 Part IV.B.1. implemented within the active work area daily to ensure that they are being maintained in effective operating condition at all times. If deficiencies are identified, the contractor must: a. if the corrective action does not require engineering design: i. begin implementing corrective actions within one business day; and ii. complete the corrective actions within five business days; or b. if the corrective action requires engineering design: i. begin the engineering design process within five business days; and ii. complete the corrective action in a reasonable time frame but no later than within 60 calendar days. 2. For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the trained contractor can stop conducting the maintenance inspections in accordance with Part IV.B.1. The trained contractor must begin conducting the maintenance inspections in accordance with Part IV.B.1. as soon as soil disturbance activities resume. 3. For construction sites where soil disturbance activities have been shut down with partial project completion, the trained contractor can stop conducting the maintenance inspections in accordance with Part IV.B.1. if all areas disturbed as of the project shutdown date have achieved final stabilization and all SMPs required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. C. Qualified Inspector Inspection Requirements 1. With the exception of the following construction activities identified in Tables 1 and 2 of Appendix B, a qualified inspector must conduct site inspections for all other construction activities identified in Tables 1 and 2 of Appendix B: a. the construction of a single-family residential subdivision with 25% or less impervious cover at total site build-out that involves a soil disturbance of one (1) or more acres of land but less than or equal to five (5) acres and is 38 Part IV.C.1.a. not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D; and b. the construction of a single-family home that involves soil disturbances of one (1) or more acres but less than or equal to five (5) acres and is not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D; and c. construction on agricultural property that involves soil disturbances of one (1)or more acres but less than five (5) acres; and d. construction activities located in the New York City Watershed located east of the Hudson River, see Appendix C Figure 1, that involve soil disturbances of 5,000 square feet or more, but less than one acre. 2. The qualified inspector must conduct site inspections in accordance with the following timetable: a. For construction sites where soil disturbance activities are on-going, the qualified inspector must conduct a site inspection at least once every seven (7) calendar days; or b. For construction sites where soil disturbance activities are on-going and the owner or operator has received authorization in accordance with Part I.E.6. to disturb greater than five (5) acres of soil at any one time, the qualified inspector must conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections must be separated by a minimum of two (2) full calendar days; or c. For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the qualified inspector must conduct a site inspection at least once every thirty (30) calendar days. The owner or operator must notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix E) or, in areas under the jurisdiction of a Traditional Land Use Control MS4 Operator, the Traditional Land Use Control MS4 Operator (provided the Traditional Land Use Control MS4 Operator is not the owner or operator of the construction activity) by hard copy or email prior to reducing the inspections to this frequency and again by hard copy or email prior to re-commencing construction; or 39 Part IV.C.2.d. d. For construction sites where soil disturbance activities have been shut down with partial project completion, the requirement to have the qualified inspector conduct inspections ceases if all areas disturbed as of the project shutdown date have achieved final stabilization and all SMPs required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. The owner or operator must notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix E) or, in areas subject to the review authority of Traditional Land Use Control MS4 Operator(s) in accordance with Part I.D.2.b.ii.1., the Traditional Land Use Control MS4 Operator(s) (provided the Traditional Land Use Control MS4 Operator(s) are not the owners or operators of the construction activity) in writing prior to the shutdown and again in writing prior to resuming construction activity. If soil disturbance activities are not resumed within 2 years from the date of shutdown, the owner or operator must terminate coverage by meeting the requirements of Part V; or e. For construction sites involving soil disturbance of one (1) or more acres that directly discharge to one of the 303(d) segments listed in Appendix D or is located in one of the watersheds listed in Appendix C, the qualified inspector must conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections must be separated by a minimum of two (2) full calendar days. 3. At a minimum, the qualified inspector must inspect: a. all erosion and sediment control practices and pollution prevention measures to ensure integrity and effectiveness; and b. all SMPs under construction to ensure that they are constructed in conformance with the SWPPP; and c. all areas of disturbance that have not achieved final stabilization; and d. all points of discharge to surface waters of the State located within, or immediately adjacent to, the property boundaries of the construction site; and e. all points of discharge from the construction site. 40 Part IV.C.4. 4. The qualified inspector must prepare an inspection report subsequent to each and every inspection. At a minimum, the inspection report must include and/or address all of the following, for all construction activities except those listed in Part IV.C.1.: a. Permit identification number; and b. Date and time of inspection; and c. Name and title of person(s) performing inspection; and d. A description of the weather and soil conditions (e.g. dry, wet, saturated) at the time of the inspection, including the temperature at the time of the inspection; and e. A description of the condition of the runoff at all points of discharge from the construction site. This must include identification of any discharges of sediment from the construction site. Include discharges from conveyance systems (i.e. pipes, culverts, ditches, etc.) and overland flow; and f. A description of the condition of all surface waters of the State located within, or immediately adjacent to, the property boundaries of the construction site which receive runoff from disturbed areas. This must include identification of any discharges of sediment to the surface waters of the State; and g. Identification of all erosion and sediment control practices and pollution prevention measures that need repair or maintenance; and h. Identification of all erosion and sediment control practices and pollution prevention measures that were not installed properly or are not functioning as designed and need to be reinstalled or replaced; and i. Description and sketch (map) of areas with active soil disturbance activity, areas that have been disturbed but are inactive at the time of the inspection, and areas that have been stabilized (temporary and/or final) since the last inspection; and j. Estimates, in square feet or acres, of the following areas: 41 Part IV.C.4.j.i. i. Total area with active soil disturbance (not requiring either temporary stabilization or final stabilization); and ii. Total area with inactive soil disturbance (requiring either temporary stabilization or final stabilization); and iii. Total area that has achieved temporary stabilization; and iv. Total area that has achieved final stabilization; and k. Current stage of construction of all SMPs and identification of all construction activity on site that is not in conformance with the SWPPP and technical standards; and l. Corrective action(s) that must be taken to install, repair, replace or maintain erosion and sediment control practices and pollution prevention measures; and to correct deficiencies identified with the construction of the SMP(s); and m. Identification and status of all corrective actions that were required by previous inspection; and n. Digital photographs, with date stamp, that clearly show the condition of all practices that have been identified as needing corrective actions. The qualified inspector must attach color copies of the digital photographs to the inspection report being maintained onsite within seven (7) calendar days of the date of the inspection. The qualified inspector must also take digital photographs, with date stamp, that clearly show the condition of the practice(s) after the corrective action has been completed. The qualified inspector must attach paper color copies of the digital photographs to the inspection report that documents the completion of the corrective action work within seven (7) calendar days of that inspection. 5. Within one business day of the completion of an inspection, the qualified inspector must notify the owner or operator, and appropriate contractor or subcontractor identified in Part III.A.7., of any corrective actions that need to be taken. The contractor or subcontractor must: a. if the corrective action does not require engineering design: 42 Part IV.C.5.a.i. i. begin implementing corrective actions within one business day; and ii. complete the corrective actions within five business days; or b. if the corrective action requires engineering design: i. begin the engineering design process within five business days; and ii. complete the corrective action in a reasonable time frame but no later than within 60 calendar days. 6. All inspection reports must be signed by the qualified inspector. In accordance with Part I.E.3., the inspection reports must be maintained on site with the SWPPP. Part V. How to Terminate CGP Coverage A. Electronic Notice of Termination (eNOT) Submittal The eNOT contains questions to ensure requirements in Part V.A. have been met. 1. An owner or operator must terminate coverage when one or more of the following requirements have been met: a. Total project completion: i. all construction activity identified in the SWPPP has been completed; and ii. all areas of disturbance have achieved final stabilization; and iii. all temporary, structural erosion and sediment control measures have been removed; and iv. all SMPs have been constructed in conformance with the SWPPP and are operational; and v. an as-built drawing has been prepared; or 43 Part V.A.1.b. b. Planned shutdown with partial project completion: i. all soil disturbance activities have ceased; and ii. all areas disturbed as of the project shutdown date have achieved final stabilization; and iii. all temporary, structural erosion and sediment control measures have been removed; and iv. all SMPs required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational; and v. an as-built drawing has been prepared; or c. In accordance with Part I.G. Change of Owner or Operator; or d. The owner or operator has obtained coverage under an alternative general SPDES permit or an individual SPDES permit. 2. For construction activities that require qualified inspector inspections in accordance with Part IV.C.1. and have met Part V.A.1.a. or b., the owner or operator must have the qualified inspector perform a final site inspection prior to submitting the eNOT. The qualified inspector must, by signing the “Final Stabilization” and “Post-Construction Stormwater Management Practice(s)” certification statements on the eNOT, certify that all the requirements in Part V.A.1.a. or b. have been achieved. 3. For construction activities that are subject to the review authority of Traditional Land Use Control MS4 Operator(s) in accordance with Part I.D.2.b.ii.1. and meet Part V.A.1.a. or b., the owner or operator must have the Traditional Land Use Control MS4 Operator(s) sign the “MS4 Acceptance” statement on the eNOT in accordance with the requirements in Part VII.J. A Traditional Land Use Control MS4 Operator official, by signing this statement, determined that it is acceptable for the owner or operator to submit the eNOT in accordance with the requirements of this Part. A Traditional Land Use Control MS4 Operator can make this determination by performing a final site inspection themselves or by accepting the qualified inspector’s final site inspection certification(s) when required in Part V.A.2. 44 Part V.A.4. 4. For construction activities that require SMPs and meet Part V.A.1.a. or b., the owner or operator must, prior to submitting the eNOT, ensure one of the following: a. for SMP(s) that were constructed by a private entity, but will be owned, operated, and maintained by a public entity, the SMP(s) and any right-of- way(s) needed to operate and maintain such practice(s) have been deeded to the municipality in which the practice(s) is located; or b. for SMP(s) that are privately owned, but will be operated and maintained by a public entity, an executed operation and maintenance agreement is in place with the municipality that will operate and maintain the SMP(s); or c. for SMP(s) that are privately owned, the owner or operator has a mechanism in place that requires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan, such as a deed covenant in the owner or operator’s deed of record; or d. for SMP(s) that are owned by a public or private institution (e.g. school, university, hospital), government agency or authority, or public utility, the owner or operator has policies and procedures in place that ensure operation and maintenance of the practices in accordance with the operation and maintenance plan. 5. An owner or operator that has met the requirements of Part V.A.1., 2., 3., and 4. must request termination of coverage under this permit by submitting a complete Notice of Termination form electronically using a NYSDEC approved form.5 a. The owner’s or operator’s coverage is terminated as of the termination date indicated in the Letter of Termination (LOT), which is sent by NYSDEC after a complete eNOT is submitted. 5 Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c) or (d). All waiver requests must be submitted to Stormwater_info@dec.ny.gov or NYSDEC, Bureau of Water Permits, 625 Broadway, 4th Floor, Albany, New York 12233-3505. 45 Part VI. Part VI. Record Retention and Reporting A. Record Retention The owner or operator must retain a copy of the documents listed in Part I.E.3. and a copy of the LOT for a period of at least five years from the date that NYSDEC accepts a complete NOT submitted in accordance with Part V. B. Reporting Except for the eNOI, the signature forms associated with the eNOI, and the eNOT, all other written correspondence requested by NYSDEC, including individual permit applications, must be sent to the address of the appropriate DOW (SPDES) Program contact at the Regional Office listed in Appendix E. Part VII. Standard Permit Requirements For the purposes of this permit, examples of contractors and subcontractors include: third-party maintenance and construction contractors. A. Duty to Comply The owner or operator, and all contractors or subcontractors, must comply with all requirements of this permit. Any non-compliance with the requirements of this permit constitutes a violation of the New York State Environmental Conservation Law (ECL), and its implementing regulations, and is grounds for enforcement action. Filing of a request for termination of coverage under this permit, or a notification of planned changes or anticipated non-compliance, does not limit, diminish or stay compliance with any requirements of this permit. B. Need to Halt or Reduce Activity Not a Defense The necessity to halt or reduce the construction activity regulated by this permit, in order to maintain compliance with the requirements of this permit, must not be a defense in an enforcement action. C. Penalties There are substantial criminal, civil, and administrative penalties associated with violating the requirements of this permit. Fines of up to $37,500 per day for each 46 Part VII.C. violation and imprisonment for up to 15 years may be assessed depending upon the nature and degree of the offense. D. False Statements Any person who knowingly makes any false material statement, representation, or certification in any application, record, report, or other document filed or required to be maintained under this permit, including monitoring reports or reports of compliance or noncompliance must, upon conviction, be punished in accordance with ECL §71-1933 and or New York State Penal Law Articles 175 and 210. E. Re-Opener Clause Upon issuance of this permit, a determination has been made on the basis of a submitted Notice of Intent, plans, or other available information, that compliance with the specified permit requirements will reasonably protect classified water use and assure compliance with applicable water quality standards. Satisfaction of the requirements of this permit notwithstanding, if operation pursuant to this permit causes or contributes to a condition in contravention of State water quality standards or guidance values, or if NYSDEC determines that a modification is necessary to prevent impairment of the best use of the waters or to assure maintenance of water quality standards or compliance with other provisions of ECL Article 17 or the Clean Water Act (CWA), or any regulations adopted pursuant thereto, NYSDEC may require such modification and the Commissioner may require abatement action to be taken by the owner or operator and may also prohibit such operation until the modification has been implemented. F. Duty to Mitigate The owner or operator, and its contractors and subcontractors, must take all reasonable steps to minimize or prevent any discharge in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. G. Requiring Another General Permit or Individual SPDES Permit NYSDEC may require any owner or operator authorized to discharge in accordance with this permit to apply for and obtain an individual SPDES permit or apply for authorization to discharge in accordance with another general SPDES permit. 1. Cases where an individual SPDES permit or authorization to discharge in accordance with another general SPDES permit may be required include, but is not limited to the following: 47 Part VII.G.1.a. a. the owner or operator is not in compliance with the conditions of this permit or does not meet the requirements for coverage under this permit; and b. a change has occurred in the availability of demonstrated technology or practices for the control or abatement of pollutants applicable to the point source; and c. new effluent limitation guidelines or new source performance standards are promulgated that are applicable to point sources authorized to discharge in accordance with this permit; and d. existing effluent limitation guidelines or new source performance standards that are applicable to point sources authorized to discharge in accordance with this permit are modified; and e. a water quality management plan containing requirements applicable to such point sources is approved by NYSDEC; and f. circumstances have changed since the time of the request to be covered so that the owner or operator is no longer appropriately controlled under this permit, or either a temporary or permanent reduction or elimination of the authorized discharge is necessary; and g. the discharge is in violation of section 17-0501 of the ECL; and h. the discharge(s) is a significant contributor of pollutants. In making this determination, NYSDEC may consider the following factors: i. the location of the discharge(s) with respect to surface waters of the State; and ii. the size of the discharge(s); and iii. the quantity and nature of the pollutants discharged to surface waters of the State; and iv. other relevant factors including compliance with other provisions of ECL Article 17, or the CWA. 2. When NYSDEC requires any owner or operator authorized by this permit to apply for an individual SPDES permit as provided for in this subdivision, it must notify the owner or operator in writing that a permit application is required. This notice must include a brief statement of the reasons for this decision, an application 48 Part VII.G.2. form, a statement setting a time for the owner or operator to file the application for an individual SPDES permit, and a deadline, not sooner than 180 days from the owner’s or operator's receipt of the notification letter, whereby the authorization to discharge under this permit must be terminated. NYSDEC may grant additional time upon demonstration, to the satisfaction of the RWE,6 that additional time to apply for an alternative authorization is necessary or where NYSDEC has not provided a permit determination in accordance with 6 NYCRR Part 621. 3. When an individual SPDES permit is issued to an owner or operator authorized to discharge under this permit for the same discharge(s), this permit authorization for construction activities authorized under the individual SPDES permit is automatically terminated on the effective date of the individual SPDES permit unless termination is earlier in accordance with 6 NYCRR Part 750. H. Duty to Provide Information The owner or operator must furnish to NYSDEC, within five business days, unless otherwise set forth by NYSDEC, any information that NYSDEC may request to determine whether cause exists to determine compliance with this permit or to determine whether cause exists for requiring an individual SPDES permit in accordance with 6 NYCRR 750-1.21(e) (see Part VII.G. Requiring Another General Permit or Individual Permit). The owner or operator must make available to NYSDEC, for inspection and copying, or furnish to NYSDEC within 25 business days of receipt of a NYSDEC request for such information, any information retained in accordance with this permit. Except for Part I.D.4. and 5. and Part I.G., the following applies: where the owner or operator becomes aware that it failed to submit any relevant facts on the Notice of Intent, or submitted incorrect information in a Notice of Intent or in any report to NYSDEC, the owner or operator must submit such facts or corrected information to NYSDEC within five business days. I. Extension In the event a new permit is not issued and effective prior to the expiration of this permit, and this permit is extended pursuant to the State Administrative Procedure Act and 6 NYCRR Part 621, then the owner or operator with coverage under this permit may continue to operate and discharge in accordance with the requirements of this permit until a new permit is issued and effective. 6 The Regional Water Manager where a DEC Region does not have a RWE. 49 Part VII.J. J. Signatories and Certification The Notice of Intent, Notice of Termination, and reports required by this permit must be signed as provided in 40 CFR §122.22. 1. All Notices of Intent and Notices of Termination must be signed as follows: a. For a corporation. By a responsible corporate officer. For the purpose of this section, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy-or decision-making functions for the corporation; or (ii) the manager of one or more manufacturing, production or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for Notice of Intent or Notice of Termination requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. Note: NYSDEC does not require specific assignments or delegations of authority to responsible corporate officers identified in 40 CFR §122.22(a)(1)(i). NYSDEC will presume that these responsible corporate officers have the requisite authority to sign the Notice of Intent or Notice of Termination unless the corporation has notified NYSDEC to the contrary. Corporate procedures governing authority to sign a Notice of Intent or Notice of Termination may provide for assignment or delegation to applicable corporate positions under 40 CFR §122.22(a)(1)(ii) rather than to specific individuals. b. For a partnership or sole proprietorship. By a general partner or the proprietor, respectively. 50 Part VII.J.1.c. c. For a municipality, State, Federal, or other public agency. By either a principal executive officer or ranking elected official. For purposes of this section, a principal executive officer of a Federal agency includes: 1. the chief executive officer of the agency; or 2. a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrators of EPA). 2. All reports required by this permit, and other information requested by NYSDEC, must be signed by a person described in Part VII.J.1., or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part VII.J.1. or using the Duly Authorized Form, found on the DEC website; and b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and c. The written authorization is submitted to NYSDEC. 3. Changes to authorization. If an authorization under Part VII.J.2. is no longer accurate because a different individual or position has responsibility for the overall operation of the construction activity, a new authorization satisfying the requirements of Part VII.J.2. must be submitted to NYSDEC prior to or together with any reports, information, or applications to be signed by an authorized representative. 4. Certification. Any person signing a document under Part VII.J.1. or 2. must make the following certification: I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who 51 Part VII.J.4. manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. 5. Electronic reporting. If documents described in Part VII.J.1. or 2. are submitted electronically by or on behalf of the construction activity with coverage under this permit, any person providing the electronic signature for such documents must meet all relevant requirements of this section, and must ensure that all of the relevant requirements of 40 CFR Part 3 (including, in all cases, subpart D to Part 3) (Cross-Media Electronic Reporting) and 40 CFR Part 127 (NPDES Electronic Reporting Requirements) are met for that submission. K. Inspection and Entry The owner or operator must allow NYSDEC, the USEPA Regional Administrator, the applicable county health department, or any authorized representatives of those entities, or, in the case of a construction site which discharges through an MS4, an authorized representative of the MS4 receiving the discharge, upon the presentation of credentials and other documents as may be required by law, to: 1. enter upon the owner’s or operator's premises where a regulated facility or activity is located or conducted or where records must be kept under the requirements of this permit; and 2. have access to and copy at reasonable times, any records that must be kept under the requirements of this permit, including records required to be maintained for purposes of operation and maintenance; and 3. inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices or operations regulated or required under this permit; and 4. sample or monitor at reasonable times, for the purposes of assuring general SPDES permit compliance or as otherwise authorized by the CWA or ECL, any substances or parameters at any location; and 5. enter upon the property of any contributor to the regulated facility or activity under authority of the owner or operator. 52       Part VII.L. L. Confidentiality of Information The following must not be held confidential: this permit, the fact sheet for this permit, the name and address of any owner or operator, effluent data, the Notice of Intent, and information regarding the need to obtain an individual permit or an alternative general SPDES permit. This includes information submitted on forms themselves and any attachments used to supply information required by the forms (except information submitted on usage of substances). Upon the request of the owner or operator, NYSDEC must make determinations of confidentiality in accordance with 6 NYCRR Part 616, except as set forth in the previous sentence. Any information accorded confidential status must be disclosed to the Regional Administrator upon his or her written request. Prior to disclosing such information to the Regional Administrator, NYSDEC will notify the Regional Administrator of the confidential status of such information. M. Other Permits May Be Required Nothing in this permit relieves the owner or operator from a requirement to obtain any other permits required by law. N. NYSDEC Orders or Civil Decrees/Judgments The issuance of this permit by the NYSDEC, and the coverage under this permit by the owner or operator, does not supersede, revoke, or rescind any existing order on consent or civil Decree/Judgment, or modification to any such documents or to any order issued by the Commissioner, or any of the terms, conditions, or requirements contained in such order or modification therefore, unless expressly noted. O. Property Rights Coverage under this permit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal, State, or local laws or regulations, nor does it obviate the necessity of obtaining the assent of any other jurisdiction as required by law for the discharge authorized. P. Compliance with Interstate Standards If the construction activity covered by this permit originates within the jurisdiction of an interstate water pollution control agency, then the construction activity must also comply with any applicable effluent standards or water quality standards promulgated by that interstate agency and as set forth in this permit for such construction activities. 53 Part VII.Q. Q. Oil and Hazardous Substance Liability Coverage under this permit does not affect the imposition of responsibilities upon, or the institution of any legal action against, the owner or operator under section 311 of the CWA, which must be in conformance with regulations promulgated pursuant to section 311 governing the applicability of section 311 of the CWA to discharges from facilities with NPDES permits, nor must such issuance preclude the institution of any legal action or relieve the owner or operator from any responsibilities, liabilities, or penalties to which the owner or operator is or may be subject pursuant to the Comprehensive Environmental Response, Compensation and Liability Act of 1980, 42 U.S.C. section 9601 et seq. (CERCLA). R. Severability The provisions of this permit are severable, and if any provision of this permit, or the application of any provision of this permit to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this permit, must not be affected thereby. S. NYSDEC Approved Forms The owner or operator must provide all relevant information that is requested by NYSDEC, and required by this permit, on all NYSDEC approved forms. 54 Appendix A APPENDIX A – Abbreviations and Definitions Abbreviations APO – Agency Preservation Officer BB – New York State Standards and Specifications for Erosion and Sediment Control (Blue Book), dated November 2016 BMP – Best Management Practice CPESC – Certified Professional in Erosion and Sediment Control CPv – Channel Protection Volume CWA – Clean Water Act (or the Federal Water Pollution Control Act, 33 U.S.C. §1251 et seq) DM – New York State Stormwater Management Design Manual (Design Manual), dated July 31, 2024 DOW – Division of Water EAF – Environmental Assessment Form ECL – chapter 43-B of the Consolidated Laws of the State of New York, entitled the Environmental Conservation Law EPA – U.S. Environmental Protection Agency HSG – Hydrologic Soil Group MS4 – Municipal Separate Storm Sewer System NOI – Notice of Intent NOT – Notice of Termination NPDES – National Pollutant Discharge Elimination System NYC – The City of New York NYCDEP – The City of New York Department of Environmental Protection NYSDEC – The New York State Department of Environmental Conservation OPRHP – Office of Parks, Recreation and Historic Places Qf – Extreme Flood Qp – Overbank Flood RR – Runoff Reduction RRv – Runoff Reduction Volume RWE – Regional Water Engineer SEQR – State Environmental Quality Review Act SHPA – State Historic Preservation Act SMP – Post-Construction Stormwater Management Practice SPDES – State Pollutant Discharge Elimination System SWPPP – Stormwater Pollution Prevention Plan TMDL – Total Maximum Daily Load UPA – Uniform Procedures Act USDA – United States Department of Agriculture WQv – Water Quality Volume 55 Appendix A Definitions All definitions in this section are solely for the purposes of this permit. If a word is not italicized in the permit, use its common definition. Agricultural Building – a structure designed and constructed to house farm implements, hay, grain, poultry, livestock or other horticultural products; excluding any structure designed, constructed or used, in whole or in part, for human habitation, as a place of employment where agricultural products are processed, treated or packaged, or as a place used by the public. Agricultural Property – the land for construction of a barn, agricultural building, silo, stockyard, pen or other structural practices identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023). Alter Hydrology from Pre-to Post-Development Conditions – the post-development peak flow rate(s) has increased by more than 5% of the pre-developed condition for the design storm of interest (e.g. 10 yr and 100 yr). Combined Sewer System – a sewer system which conveys sewage and stormwater through a single pipe system to a publicly owned treatment works. Commence (Commencement of) Construction Activities – the initial disturbance of soils associated with clearing, grading or excavation activities; or other construction related activities that disturb or expose soils such as demolition, stockpiling of fill material, and the initial installation of erosion and sediment control practices required in the SWPPP. See definition for “Construction Activity(ies)” also. Common Plan of Development or Sale – a contiguous area where multiple separate and distinct construction activities are occurring, or may occur, under one plan. The “common plan” of development or sale is broadly defined as any announcement or piece of documentation (including a sign, public notice or hearing, marketing plan, advertisement, drawing, permit application, State Environmental Quality Review Act (SEQR) environmental assessment form or other documents, zoning request, computer design, etc.) or physical demarcation (including boundary signs, lot stakes, surveyor markings, etc.) indicating construction activities may occur on a specific plot. A common plan of development or sale is comprised of two or more phases. Common plan of development or sale does not include separate and distinct construction activities that are occurring, or may occur, under one plan that are at least 1/4 mile apart provided any interconnecting road, pipeline or utility project that is part of the same “common plan” is not concurrently being disturbed. 56 Appendix A Construction Activity(ies) – identified within 40 CFR 122.26(b)(14)(x), 122.26(b)(15)(i), and 122.26(b)(15)(ii), any clearing, grading, excavation, filling, demolition or stockpiling activities that result in soil disturbance. Clearing activities can include, but are not limited to, mechanized logging equipment operation, the cutting and skidding of trees, stump removal and/or brush root 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, which is excluded from the calculation of the soil disturbance for a project. Routine maintenance includes, but is not limited to: Re-grading of gravel roads or parking lots; and Cleaning and shaping of existing roadside ditches and culverts that maintains the approximate original line and grade, and maintains or improves the hydraulic capacity of the ditch; and Replacement of existing culverts that maintains the approximate original line and grade, and maintains or improves the hydraulic capacity of a ditch; and Replacement of existing bridges that maintains the approximate original line and grade, and maintains or improves the hydraulic capacity beneath the bridges; and Cleaning and shaping of existing roadside ditches that does not maintain the approximate original grade, hydraulic capacity and purpose of the ditch if the changes to the line and grade, hydraulic capacity or purpose of the ditch are installed to improve water quality and quantity controls (e.g. installing grass lined ditch); and Placement of aggregate shoulder backing that stabilizes the transition between the road shoulder and the ditch or embankment; and Full depth milling and filling of existing asphalt pavements, replacement of concrete pavement slabs, and similar work that does not expose soil or disturb the bottom six (6) inches of subbase material; and Long-term use of equipment storage areas at or near highway maintenance facilities; and Removal of sediment from the edge of the highway to restore a previously existing sheet-flow drainage connection from the highway surface to the highway ditch or embankment; and Existing use of Canal Corp owned upland disposal sites for the canal, and Replacement of curbs, gutters, sidewalks and guide rail posts; and Maintenance of ski trails including brush hog use and mowing; and Above ground snowmaking pipe replacement; and Replacement of existing utility poles; etc. Construction Site – the land area where construction activity(ies) will occur. See also the definitions for “Commence (Commencement of) Construction Activities” and “Common Plan of Development or Sale.” 57 Appendix A Dewatering – the act of draining rainwater and/or groundwater from building foundations, vaults or excavations/trenches. Directly Discharge(s)(ing) (to a specific surface waterbody) – runoff flows from a construction site by overland flow and the first point of discharge is the specific surface waterbody, or runoff flows from a construction site to a separate storm sewer system and the first point of discharge from the separate storm sewer system is the specific surface waterbody. Discharge(s)(d) – any addition of any pollutant to waters of the State through an outlet or point source. Embankment – an earthen or rock slope that supports a road/highway. Equivalent (Equivalence) – the practice or measure meets all the performance, longevity, maintenance, and safety objectives of the technical standard and will provide an equal or greater degree of water quality protection. Final Stabilization – 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 or pavement. Historic Property – any building, structure, site, object or district that is listed on the State or National Registers of Historic Places or is determined to be eligible for listing on the State or National Registers of Historic Places. Impervious Area (Cover) – all impermeable surfaces that cannot effectively infiltrate rainfall. This includes paved, concrete and compacted gravel surfaces (i.e. parking lots, driveways, roads, runways and sidewalks); building rooftops and miscellaneous impermeable structures such as patios, pools, and sheds. Infeasible – not technologically possible, or not economically practicable and achievable considering best industry practices. Minimize(ing)(ation) – reduce and/or eliminate to the extent achievable using control measures (including best management practices) that are technologically available and economically practicable and achievable in light of best industry practices. Municipal Separate Storm Sewer System (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): 58 Appendix A 1. owned or operated by a State, city, town, village, 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; and 2. designed or used for collecting or conveying stormwater; and 3. which is not a combined sewer system; and 4. which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2. Natural Buffer(s) – an undisturbed area with natural cover running along a surface water (e.g. wetland, stream, river, lake, etc.). New Development – any land disturbance that does not meet the definition of Redevelopment Activity included in this appendix. New York State Erosion and Sediment Control Certificate Program – a certificate program that establishes and maintains a process to identify and recognize individuals who are capable of developing, designing, inspecting and maintaining erosion and sediment control plans on projects that disturb soils in New York State. The certificate program is administered by the New York State Conservation District Employees Association. Nonpoint Source(s) – any source of water pollution or pollutants which is not a discrete conveyance or point source permitted pursuant to Title 7 or 8 of Article 17 of the Environmental Conservation Law (see ECL Section 17-1403). Overbank – flow events that exceed the capacity of the stream channel and spill out into the adjacent floodplain. Owner or Operator – the person, persons, or legal entity which owns or leases the property on which the construction activity is occurring; an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications; and/or an entity that has day-to-day operational control of those activities at a project that are necessary to ensure compliance with the permit requirements. 59 Appendix A Performance Criteria – the six performance criteria for each group of SMPs in Chapters 5 and 6 of the technical standard, New York State Stormwater Management Design Manual (DM), dated July 31, 2024. These include feasibility, conveyance, pretreatment, treatment, landscaping, and maintenance. It does not include the Sizing Criteria (i.e. WQv, RRv, CPv, Qp and Qf) in Part I.C.2. of the permit. Phase – a defined area in which construction activities are occurring or will occur separate from other defined area(s). Point Source – any discernible, confined, and discrete conveyance, including but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, vessel or other floating craft, or landfill leachate collection system from which pollutants are or may be discharged. Pollutant(s) – dredged spoil, filter backwash, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand and industrial, municipal, agricultural waste and ballast discharged into water; which may cause or might reasonably be expected to cause pollution of the waters of the state in contravention of the standards or guidance values adopted as provided in 6 NYCRR Parts 700 et seq. Qualified Inspector – a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder or other NYSDEC endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of NYSDEC endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. Note: Inspections of any SMPs that include structural components, such as a dam for an impoundment, shall be performed by a licensed Professional Engineer. 60 Appendix A Qualified Professional – a person that is knowledgeable in the principles and practices of stormwater management and treatment, such as a licensed Professional Engineer, Registered Landscape Architect or other NYSDEC endorsed individual(s). Individuals preparing SWPPPs that require the SMP component must have an understanding of the principles of hydrology, water quality management practice design, water quantity control design, and, in many cases, the principles of hydraulics. All components of the SWPPP that involve the practice of engineering, as defined by the NYS Education Law (see Article 145), shall be prepared by, or under the direct supervision of, a professional engineer licensed to practice in the State of New York. Redevelopment Activity(ies) – the disturbance and reconstruction of existing impervious area, including impervious areas that were removed from a project site within five (5) years of preliminary project plan submission to the local government (i.e. site plan, subdivision, etc.). Renewable Energy – electricity or thermal energy generated by renewable energy systems through use of the following technologies: solar thermal, photovoltaics, on land and offshore wind, hydroelectric, geothermal electric, geothermal ground source heat, tidal energy, wave energy, ocean thermal, and fuel cells which do not utilize a fossil fuel resource in the process of generating electricity. Site Limitations – site conditions that prevent the use of an infiltration technique and or infiltration of the total WQv. Typical site limitations include: seasonal high groundwater, shallow depth to bedrock, and soils with an infiltration rate less than 0.5 inches/hour. The existence of site limitations shall be confirmed and documented using actual field testing (i.e. test pits, soil borings, and infiltration test) or using information from the most current United States Department of Agriculture (USDA) Soil Survey for the County where the project is located. Sizing Criteria – the criteria included in Part I.C.2 of the permit that are used to size SMPs. The criteria include; Water Quality Volume (WQv), Runoff Reduction Volume (RRv), Channel Protection Volume (Cpv), Overbank Flood (Qp), and Extreme Flood (Qf). Steep Slope – land area designated on the current United States Department of Agriculture (USDA) Soil Survey as Soil Slope Phase D, (provided the map unit name or description is inclusive of slopes greater than 25%), or Soil Slope Phase E or F, (regardless of the map unit name), or a combination of the three designations. Stormwater – that portion of precipitation that, once having fallen to the ground, is in excess of the evaporative or infiltrative capacity of soils, or the retentive capacity of surface features, which flows or will flow off the land by surface runoff to waters of the State. 61 Appendix A Streambank – the terrain alongside the bed of a creek or stream. The bank consists of the sides of the channel, between which the flow is confined. Stormwater Pollution Prevention Plan (SWPPP) – a project specific report, including construction drawings, that among other things: describes the construction activity(ies), identifies the potential sources of pollution at the construction site; describes and shows the stormwater controls that will be used to control the pollutants (i.e. erosion and sediment controls; for many projects, includes SMPs); and identifies procedures the owner or operator will implement to comply with the requirements of the permit. See Part III of the permit for a complete description of the information that must be included in the SWPPP. 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 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 to 941. Temporarily Ceased – an existing disturbed area will not be disturbed again within 14 calendar days of the previous soil disturbance. Temporary Stabilization – 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). Total Maximum Daily Load (TMDL) – the sum of the allowable loads of a single pollutant from all contributing point and nonpoint sources. It is a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet water quality standards, and an allocation of that amount to the pollutant's sources. A TMDL stipulates Waste Load Allocations (WLA) for point source discharges, Load Allocations (LA) for nonpoint sources, and a margin of safety (MOS). Traditional Land Use Control MS4 Operator – a city, town, or village with land use control authority that is authorized to discharge under New York State DEC’s SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (MS4s) or the City of New York’s Individual SPDES Permit for their Municipal Separate Storm Sewer Systems (NY-0287890). Trained Contractor – an employee from the contracting (construction) company, identified in Part III.A.7., that has received four (4) hours of NYSDEC endorsed training 62 Appendix A in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity. After receiving the initial training, the trained contractor shall receive four (4) hours of training every three (3) years. It can also mean an employee from the contracting (construction) company, identified in Part III.A.7., that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of NYSDEC endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity). The trained contractor is responsible for the day-to-day implementation of the SWPPP. Tree Clearing – construction activities limited to felling and removal of trees. Tree clearing does not include hand felling and leaving the trees in place with no support from mechanized equipment, which is not considered construction activity requiring coverage under this permit. Water Quality Standard – such measures of purity or quality for any waters in relation to their reasonable and necessary use as promulgated in 6 NYCRR Part 700 et seq. 63 Appendix B APPENDIX B – Required SWPPP Components by Project Type Table 1 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS The following construction activities that involve soil disturbances of one (1) or more acres of land, but less than five (5) acres: • Single-family home not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D • Single-family residential subdivisions with 25% or less impervious cover at total site build-out and not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D • Construction of a barn or other agricultural building, silo, stock yard or pen. • Structural agricultural conservation practices as identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023) that include construction or reconstruction of impervious area or alter hydrology from pre- to post-development conditions. The following construction activities that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land: • All construction activities located in the New York City Watershed located east of the Hudson River, see Appendix C Figure 1, that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. Within the municipal boundaries of NYC: • Stand-alone road reconstruction, where the total soil disturbance from only that road construction, is less than one (1) acre of land. The following construction activities: • Installation of underground linear utilities; such as gas lines, fiber-optic cable, cable TV, electric, telephone, sewer mains, and water mains • Environmental enhancement projects, such as wetland mitigation, stormwater retrofits, stream restoration, and resiliency projects that reconstruct shoreline areas to address sea level rise • Pond construction • Linear bike paths running through areas with vegetative cover, including bike paths surfaced with an impervious cover • Cross-country ski trails, walking/hiking trails, and mountain bi king trails, including a de minimis parking lot (maximum 10 spaces total, sized for passenger cars) with 35 feet minimum preservation of un disturbed area downgradient from the parking lot • Dam rehabilitation (the structure of the dam itself) • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that are not part of residential, commercial, or institutional development; • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that include incidental shoulder or curb work along an existing highway to support construction of the sidewalk, bike path, or walking path. 64 Appendix B Table 1 (Continued) CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS The following construction activities: • Slope stabilization • Slope flattening that changes the grade of the site, but does not significantly change the runoff characteristics • Spoil areas that will be covered with vegetation • Vegetated open space (i.e. recreational parks, lawns, meadows, fields, downhill ski trails) that do not alter hydrology from pre-to post-development conditions • Athletic fields (natural grass) that do not include the construction or reconstruction of impervious area and do not alter hydrology from pre-to post-development conditions • Demolition where vegetation will be established, and no redevelopment activity is planned1 • Installation or replacement of either an overhead electric transmission line or a ski lift tower that does not include the construction of permanent access roads or parking areas surfaced with impervious cover. • Solar array field areas that have tables elevated off the ground, spaced one table width apart, do not alter hydrology from pre-to post-development conditions, and address water quality volume and runoff reduction volume by maintaining sheet flow on slopes less than 8%. • Structural agricultural conservation practices as identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023) that do not include construction or reconstruction of impervious area and do not alter hydrology from pre-to post-development conditions. • Temporary access roads, median crossovers, detour roads, lanes, or other temporary impervious areas that will be restored to pre-construction conditions once the construction activity is complete (in this context, “temporary” means the impervious area will be in place for two years or less) • Other construction activities that do not include the construction or reconstruction of impervious area, and do not alter hydrology from pre-to post-development conditions, and are not listed in Table 2. 1.If the site is redeveloped in the future, a new eNOI must be submitted. 65 Appendix B Table 2 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES (SMPS) The following construction activities: • Single-family home located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d) segments listed in Appendix D • Single-family home that disturbs five (5) or more acres of land • Single-family residential subdivisions located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d) segments listed in Appendix D • Single-family residential subdivisions that involve soil disturbances of between one (1) and five (5) acres of land with greater than 25% impervious cover at total site build-out • Single-family residential subdivisions that involve soil disturbances of between 20,000 square feet and one (1) acre of land within the municipal boundaries of NYC with greater than 25% impervious cover at total site build-out • Single-family residential subdivisions that involve soil disturbances of five (5) or more acres of land, and single-family residential subdivisions that involve soil disturbances of less than five (5) acres that are part of a common plan of development or sale that will ultimately disturb five (5) or more acres of land • Multi-family residential developments; includes duplexes, townhomes, condominiums, senior housing complexes, apartment complexes, and mobile home parks • Creation of 5,000 square feet or more of impervious area in the municipal boundaries of NYC • Airports • Amusement parks • Breweries, cideries, and wineries, including establishments constructed on agricultural land • Campgrounds • Cemeteries that include the construction or reconstruction of impervious area (>5% of disturbed area) or alter the hydrology from pre-to post-development conditions • Commercial developments • Churches and other places of worship • Construction of a barn or other agricultural building (e.g. silo) that involves soil disturbance greater than five acres. • Structural agricultural conservation practices as identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023) that involves soil disturbance greater than five acres and include the construction or reconstruction of impervious area or alter hydrology from pre-to post-development conditions. • Facility buildings, including ski lodges, restroom buildings, pumphouses, ski lift terminals, and maintenance and groomer garages • Institutional development; includes hospitals, prisons, schools and colleges • Industrial facilities; includes industrial parks • Landfills; including creation of landfills or capping landfills. • Municipal facilities; includes highway garages, transfer stations, office buildings, POTWs, water treatment plants, and water storage tanks • Golf courses • Office complexes 66 Appendix B Table 2 (Continued) CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES (SMPS) The following construction activities: • Permanent laydown yards and equipment storage lots • Playgrounds that include the construction or reconstruction of impervious area • Sports complexes • Racetracks; includes racetracks with earthen (dirt) surfaces • Road construction or reconstruction, outside the municipal boundaries of NYC • Road construction within the municipal boundaries of NYC • Stand-alone road reconstruction, within the municipal boundaries of NYC where the total soil disturbance from that road reconstruction involves soil disturbance of one (1) acre or more of land • Parking lot construction or reconstruction (as with all Table 2 bullets, this includes parking lots constructed as part of the construction activities listed in Table 1, unless a Table 1 bullet specifies otherwise) • Athletic fields (natural grass) that include the construction or reconstruction of impervious area (>5% of disturbed area) or alter the hydrology from pre-to post-development conditions • Athletic fields with artificial turf • Permanent access roads, parking areas, substations, compressor stations, and well drilling pads, surfaced with impervious cover, and constructed as part of an overhead electric transmission line, wind-power, cell tower, oil or gas well drilling, sewer or water main, ski lift, or other linear utility project • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that are part of a residential, commercial or institutional development • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that are part of highway construction or reconstruction • Solar array field areas on slopes greater than 8% that cannot maintain sheet flow using management practices identified in the BB or the DM • Solar array field areas on slopes less than 8% that will alter the hydrology from pre-to post- development conditions • Solar array field areas with tables that are not elevated high enough to achieve final stabilization beneath the tables • Traditional impervious areas associated with solar development (e.g. roads, buildings, transformers) • Utility pads surfaced with impervious cover, including electric vehicle charging stations • All other construction activities that include the construction or reconstruction of impervious area or alter the hydrology from pre-to post-development conditions, and are not listed in Table 1 67 Appendix C APPENDIX C – Watersheds Requiring Enhanced Phosphorus Removal Watersheds where owners or operators of construction activities identified in Table 2 of Appendix B must prepare a SWPPP that includes SMPs designed in conformance with the Enhanced Phosphorus Removal Standards included in the DM technical standard. • Entire New York City Watershed located east of the Hudson River – Figure 1 • Onondaga Lake Watershed – Figure 2 • Greenwood Lake Watershed – Figure 3 • Oscawana Lake Watershed – Figure 4 • Kinderhook Lake Watershed – Figure 5 68 Appendix C Figure 1 -New York City Watershed East of the Hudson 69 Appendix C Figure 2 -Onondaga Lake Watershed 70 Appendix C Figure 3 -Greenwood Lake Watershed 71 Appendix C Figure 4 -Oscawana Lake Watershed 72 Appendix C Figure 5 -Kinderhook Lake Watershed 73 APPENDIX D – Impaired Waterbodies (by Construction Related Pollutants) List of waterbodies impaired by pollutants related to construction activity, including turbidity, silt/sediment, and nutrients (e.g. nitrogen, phosphorus). This list is a subset of “The Final New York State 2018 Section 303(d) List of Impaired Waters Requiring a TMDL” dated June 2020. County Waterbody Pollutant Albany Ann Lee (Shakers) Pond, Stump Pond (1201-0096) Phosphorus Albany Lawsons Lake (1301-0235) Phosphorus Allegany Amity Lake, Saunders Pond (0403-0054) Phosphorus Allegany Andover Pond (0403-0056) Phosphorus Bronx Reservoir No.1/Lake Isle (1702-0075) Phosphorus Bronx Van Cortlandt Lake (1702-0008) Phosphorus Broome Blueberry, Laurel Lakes (1404-0033) Phosphorus Broome Fly Pond, Deer Lake (1404-0038) Phosphorus Broome Minor Tribs to Lower Susquehanna (0603-0044) Phosphorus Broome Whitney Point Lake/Reservoir (0602-0004) Phosphorus Cattaraugus Allegheny River/Reservoir (0201-0023) Phosphorus Cattaraugus Beaver Lake/Alma Pond (0201-0073) Phosphorus Cattaraugus Case Lake (0201-0020) Phosphorus Cattaraugus Linlyco/Club Pond (0201-0035) Phosphorus Cayuga Duck Lake (0704-0025) Phosphorus Cayuga Owasco Inlet, Upper, and tribs (0706-0014) Nutrients Chautauqua Chadakoin River and tribs (0202-0018) Phosphorus Chautauqua Hulburt/Clymer Pond (0202-0079) Phosphorus Chautauqua Middle Cassadaga Lake (0202-0002) Phosphorus Clinton Great Chazy River, Lower, Main Stem (1002-0001) Silt/Sediment Columbia Robinson Pond (1308-0003) Phosphorus Cortland Dean Pond (0602-0077) Phosphorus Dutchess Fallkill Creek (1301-0087) Phosphorus Dutchess Hillside Lake (1304-0001) Phosphorus Dutchess Wappingers Lake (1305-0001) Phosphorus Dutchess Wappingers Lake (1305-0001) Silt/Sediment Erie Beeman Creek and tribs (0102-0030) Phosphorus Erie Delaware Park Pond (0101-0026) Phosphorus Erie Ellicott Creek, Lower, and tribs (0102-0018) Phosphorus Erie Ellicott Creek, Lower, and tribs (0102-0018) Silt/Sediment Erie Green Lake (0101-0038) Phosphorus Erie Little Sister Creek, Lower, and tribs (0104-0045) Phosphorus Erie Murder Creek, Lower, and tribs (0102-0031) Phosphorus Erie Rush Creek and tribs (0104-0018) Phosphorus Erie Scajaquada Creek, Lower, and tribs (0101-0023) Phosphorus Erie Scajaquada Creek, Middle, and tribs (0101-0033) Phosphorus Erie Scajaquada Creek, Upper, and tribs (0101-0034) Phosphorus Erie South Branch Smoke Cr, Lower, and tribs (0101-0036) Phosphorus Erie South Branch Smoke Cr, Lower, and tribs (0101-0036) Silt/Sediment Genesee Bigelow Creek and tribs (0402-0016) Phosphorus Genesee Black Creek, Middle, and minor tribs (0402 0028) Phosphorus Genesee Black Creek, Upper, and minor tribs (0402-0048) Phosphorus Genesee Bowen Brook and tribs (0102-0036) Phosphorus Genesee LeRoy Reservoir (0402-0003) Phosphorus Genesee Mill Pond (0402-0050) Phosphorus Genesee Oak Orchard Cr, Upper, and tribs (0301-0014) Phosphorus Genesee Oatka Creek, Middle, and minor tribs (0402-0031) Phosphorus Genessee Tonawanda Cr, Middle, Main Stem (0102-0002) Phosphorus Greene Schoharie Reservoir (1202-0012) Silt/Sediment Greene Sleepy Hollow Lake (1301-0059) Silt/Sediment Herkimer Steele Creek tribs (1201-0197) Phosphorus Herkimer Steele Creek tribs (1201-0197) Silt/Sediment Kings Hendrix Creek (1701-0006) 18 Nitrogen Kings Prospect Park Lake (1701-0196) Phosphorus Lewis Mill Creek/South Branch, and tribs (0801-0200) Nutrients Livingston Christie Creek and tribs (0402-0060) Phosphorus Livingston Conesus Lake (0402-0004) Phosphorus Livingston Mill Creek and minor tribs (0404-0011) Silt/Sediment Monroe Black Creek, Lower, and minor tribs (0402-0033) Phosphorus Monroe Buck Pond (0301-0017) Phosphorus Monroe Cranberry Pond (0301-0016) Phosphorus Monroe Durand, Eastman Lakes (0302-0037) Phosphorus Monroe Lake Ontario Shoreline, Western (0301-0069) 9 Phosphorus Monroe Long Pond (0301-0015) Phosphorus Monroe Mill Creek and tribs (0302-0025) Phosphorus 2 Monroe Mill Creek/Blue Pond Outlet and tribs (0402-0049) Phosphorus Monroe Minor Tribs to Irondequoit Bay (0302-0038) Phosphorus Monroe Rochester Embayment -East (0302-0002) [9] Phosphorus Monroe Rochester Embayment -West (0301-0068) 9 Phosphorus Monroe Shipbuilders Creek and tribs (0302-0026) Phosphorus 2 Monroe Thomas Creek/White Brook and tribs (0302-0023) Phosphorus 75 Nassau Bannister Creek/Bay (1701-0380) Nitrogen Nassau Beaver Lake (1702-0152) Phosphorus Nassau Browswere Bay (1701-0383) Nitrogen Nassau Camaans Pond (1701-0052) Phosphorus Nassau East Meadow Brook, Upper, and tribs (1701-0211) Silt/Sediment Nassau East Rockaway Channel (1701-0381) Nitrogen Nassau Glen Cove Creek, Lower, and tribs (1702-0146) Silt/Sediment Nassau Grant Park Pond (1701-0054) Phosphorus Nassau Hempstead Bay, Broad Channel (1701-0032) Nitrogen Nassau Hempstead Lake (1701-0015) Phosphorus Nassau Hewlett Bay (1701-0382) Nitrogen Nassau Hog Island Channel (1701-0220) Nitrogen Nassau Massapequa Creek, Upper, and tribs (1701-0174) Phosphorus Nassau Milburn/Parsonage Creeks, Upp, and tribs (1701- 0212) Phosphorus Nassau Reynolds Channel, East (1701-0215) [12] Nitrogen Nassau Reynolds Channel, West (1701-0216) 12 Nitrogen Nassau Tidal Tribs to Hempstead Bay (1701-0218) Nitrogen Nassau Tribs (fresh) to East Bay (1701-0204) Silt/Sediment Nassau Tribs (fresh) to East Bay (1701-0204) Phosphorus Nassau Tribs to Smith Pond/Halls Pond (1701-0221) Phosphorus Nassau Woodmere Channel (1701-0219) Nitrogen New York Harlem Meer (1702-0103) Phosphorus New York The Lake in Central Park (1702-0105) Phosphorus Niagara Bergholtz Creek and tribs (0101-0004) Phosphorus Niagara Hyde Park Lake (0101-0030) Phosphorus Niagara Lake Ontario Shoreline, Western (0301-0053) 9 Phosphorus Niagara Lake Ontario Shoreline, Western (0301-0072) 9 Phosphorus Oneida Ballou, Nail Creeks (1201-0203) Phosphorus Onondaga Ley Creek and tribs (0702-0001) 10 Nutrients (phosphorus) Onondaga Minor Tribs to Onondaga Lake (0702-0022) 10 Nutrients (phosphorus) Onondaga Minor Tribs to Onondaga Lake (0702-0022) 10 Nitrogen (NH3, NO2) Onondaga Onondaga Creek, Lower (0702-0023) 10 Nutrients (phosphorus) Onondaga Onondaga Creek, Lower, and tribs (0702-0023) Turbidity Onondaga Onondaga Creek, Middle, and tribs (0702-0004) Turbidity Onondaga Onondaga Creek, Upper, and tribs (0702-0024) Turbidity Ontario Great Brook and minor tribs (0704-0034) Phosphorus 2 Ontario Great Brook and minor tribs (0704-0034) Silt/Sediment 76 Ontario Hemlock Lake Outlet and minor tribs (0402-0013) Phosphorus Ontario Honeoye Lake (0402-0032) Phosphorus Orange Brown Pond Reservoir (1303-0013) Phosphorus Orange Lake Washington (1303-0012) Phosphorus Orange Minor Tribs to Middle Wallkill (1306-0061) Phosphorus Orange Monhagen Brook and tribs (1306-0074) Phosphorus Orange Orange Lake (1301-0008) [16] Phosphorus Orange Quaker Creek and tribs (1306-0025) Phosphorus Orange Wallkill River, Middle, Main Stem (1306-0038) Phosphorus Orange Wallkill River, Upper, and Minor tribs (1306-0017) Phosphorus Orleans Glenvwood Lake (0301-0041) Phosphorus Orleans Lake Ontario Shoreline, Western (0301-0070) 9 Phosphorus Orleans Lake Ontario Shoreline, Western (0301-0071) 9 Phosphorus Oswego Lake Neatahwanta (0701-0018) Nutrients (phosphorus) Oswego Pleasant Lake (0703-0047) Phosphorus Putnam Lost Lake, Putnam Lake (1302-0053) Phosphorus Putnam Minor Tribs to Croton Falls Reservoir (1302-0001) Phosphorus Queens Bergen Basin (1701-0009) 18 Nitrogen Queens Jamaica Bay, Eastern, and tribs, Queens (1701- 0005) 18 Nitrogen Queens Kissena Lake (1702-0258) Phosphorus Queens Meadow Lake (1702-0030) Phosphorus Queens Shellbank Basin (1701-0001) 18 Nitrogen Queens Willow Lake (1702-0031) Phosphorus Rensselaer Nassau Lake (1310-0001) Phosphorus Rensselaer Snyders Lake (1301-0043) Phosphorus Richmond Grassmere Lake/Bradys Pond (1701-0357) Phosphorus Rockland Congers Lake, Swartout Lake (1501-0019) Phosphorus Rockland Rockland Lake (1501-0021) Phosphorus Saratoga Ballston Lake (1101-0036) Phosphorus Saratoga Dwaas Kill and tribs (1101-0007) Phosphorus Saratoga Dwaas Kill and tribs (1101-0007) Silt/Sediment Saratoga Lake Lonely (1101-0034) Phosphorus Saratoga Round Lake (1101-0060) Phosphorus Saratoga Tribs to Lake Lonely (1101-0001) Phosphorus Schenectady Collins Lake (1201-0077) Phosphorus Schenectady Duane Lake (1311-0006) Phosphorus Schenectady Lake Mariaville Lake (1201-0113) Phosphorus Schuyler Cayuta Lake (0603-0005) Phosphorus 77 Seneca Reeder Creek and tribs (0705-0074) Phosphorus St.Lawrence Black Lake Outlet, Black Lake (0906-0001) Phosphorus St.Lawrence Fish Creek and minor tribs (0906-0026) Phosphorus Steuben Smith Pond (0502-0012) Phosphorus Suffolk Agawam Lake (1701-0117) Phosphorus Suffolk Big/Little Fresh Ponds (1701-0125) Phosphorus Suffolk Canaan Lake (1701-0018) Phosphorus Suffolk Canaan Lake (1701-0018) Silt/Sediment Suffolk Fresh Pond (1701-0241) Phosphorus Suffolk Great South Bay, East (1701-0039) Nitrogen Suffolk Great South Bay, Middle (1701-0040) Nitrogen Suffolk Great South Bay, West (1701-0173) Nitrogen Suffolk Lake Ronkonkoma (1701-0020) Phosphorus Suffolk Mattituck/Marratooka Pond (1701-0129) Phosphorus Suffolk Mill and Seven Ponds (1701-0113) Phosphorus Suffolk Millers Pond (1702-0013) Phosphorus Suffolk Moriches Bay, East (1701-0305) Nitrogen Suffolk Moriches Bay, West (1701-0038) Nitrogen Suffolk Quantuck Bay (1701-0042) Nitrogen Suffolk Shinnecock Bay and Inlet (1701-0033) Nitrogen Suffolk Tidal Tribs to West Moriches Bay (1701-0312) Nitrogen Sullivan Bodine, Mongomery Lakes (1401-0091) Phosphorus Sullivan Davies Lake (1402-0047) Phosphorus Sullivan Evens Lake (1402-0004) Phosphorus Sullivan Pleasure Lake (1402-0055) Phosphorus Sullivan Swan Lake (1401-0063) Phosphorus Tompkins Cayuga Lake, Southern End (0705-0040) Phosphorus Tompkins Cayuga Lake, Southern End (0705-0040) Silt/Sediment Ulster Ashokan Reservoir (1307-0004) Silt/Sediment Ulster Esopus Creek, Lower, Main Stem (1307-0010) [17] Turbidity Ulster Esopus Creek, Middle, Main Stem (1307-0003) 17 Turbidity Ulster Esopus Creek, Upper, and minor tribs (1307-0007)[3] Silt/Sediment Ulster Wallkill River, Lower, Main Stem (1306-0027) Phosphorus Warren Hague Brook and tribs (1006-0006) Silt/Sediment Warren Huddle/Finkle Brooks and tribs (1006-0003) Silt/Sediment Warren Indian Brook and tribs (1006-0002) Silt/Sediment Warren Lake George (1006-0016) and tribs Silt/Sediment Warren Tribs to Lake George, East Shore (1006-0020) Silt/Sediment Warren Tribs to Lake George, Lk.George Village (1006-0008) Silt/Sediment 78 Washington Wood Cr/Champlain Canal and tribs (1005-0036) Phosphorus Westchester Lake Katonah (1302-0136) Phosphorus Westchester Lake Lincolndale (1302-0089) Phosphorus Westchester Lake Meahagh (1301-0053) Phosphorus Westchester Lake Mohegan (1301-0149) Phosphorus Westchester Lake Shenorock (1302-0083) Phosphorus Westchester Mamaroneck River, Lower (1702-0071) Silt/Sediment Westchester Mamaroneck River, Upp, & minor tribs (1702-0123) Silt/Sediment Westchester Saw Mill River (1301-0007) Phosphorus Westchester Saw Mill River, Middle, and tribs (1301-0100) Phosphorus Westchester Sheldrake River (1702-0069) Phosphorus Westchester Sheldrake River (1702-0069) Silt/Sedimnt Westchester Silver Lake (1702-0040) Phosphorus Westchester Teatown Lake (1302-0150) Phosphorus Westchester Truesdale Lake (1302-0054) Phosphorus Westchester Wallace Pond (1301-0140) Phosphorus 79 APPENDIX E – List of NYSDEC Regional Offices Region COVERING THE FOLLOWING COUNTIES: DIVISION OF ENVIRONMENTAL PERMITS (DEP) PERMIT ADMINISTRATORS DIVISION OF WATER (DOW) WATER (SPDES) PROGRAM 1 NASSAU AND SUFFOLK 50 CIRCLE ROAD STONY BROOK, NY 11790 TEL. (631) 444-0365 50 CIRCLE ROAD STONY BROOK, NY 11790-3409 TEL. (631) 444-0405 2 BRONX, KINGS, NEW YORK, QUEENS AND RICHMOND 1 HUNTERS POINT PLAZA, 47-40 21ST ST. LONG ISLAND CITY, NY 11101-5407 TEL. (718) 482-4997 1 HUNTERS POINT PLAZA, 47-40 21ST ST. LONG ISLAND CITY, NY 11101-5407 TEL. (718) 482-4933 3 DUTCHESS, ORANGE, PUTNAM, ROCKLAND, SULLIVAN, ULSTER AND WESTCHESTER 21 SOUTH PUTT CORNERS ROAD NEW PALTZ, NY 12561-1696 TEL. (845) 256-3059 220 WHITE PLAINS ROAD, SUITE 110 TEL. (914) 428 -2505 4 ALBANY, COLUMBIA, DELAWARE, GREENE, MONTGOMERY, OTSEGO, RENSSELAER, SCHENECTADY AND SCHOHARIE 1130 NORTH WESTCOTT ROAD SCHENECTADY, NY 12306-2014 TEL. (518) 357-2069 1130 NORTH WESTCOTT ROAD SCHENECTADY, NY 12306-2014 TEL. (518) 357-2045 5 CLINTON, ESSEX, FRANKLIN, FULTON, HAMILTON, SARATOGA, WARREN AND WASHINGTON 1115 STATE ROUTE 86, PO BOX 296 RAY BROOK, NY 12977-0296 TEL. (518) 897-1234 232 GOLF COURSE ROAD WARRENSBURG, NY 12885-1172 TEL. (518) 623-1200 6 HERKIMER, JEFFERSON, LEWIS, ONEIDA AND ST. LAWRENCE STATE OFFICE BUILDING 317 WASHINGTON STREET WATERTOWN, NY 13601-3787 TEL. (315) 785-2245 STATE OFFICE BUILDING 207 GENESEE STREET UTICA, NY 13501-2885 TEL. (315) 793-2554 7 BROOME, CAYUGA, CHENANGO, CORTLAND, MADISON, ONONDAGA, OSWEGO, TIOGA AND TOMPKINS 5786 WIDEWATERS PARKWAY SYRACUSE, NY 13214-1867 TEL. (315) 426-7438 5786 WIDEWATERS PARKWAY SYRACUSE, NY 13214-1867 TEL. (315) 426-7500 8 CHEMUNG, GENESEE, LIVINGSTON, MONROE, ONTARIO, ORLEANS, SCHUYLER, SENECA, STEUBEN, WAYNE AND YATES 6274 EAST AVON-LIMA ROADAVON, NY 14414-9519 TEL. (585) 226-2466 6274 EAST AVON-LIMA RD. AVON, NY 14414-9519 TEL. (585) 226-2466 9 ALLEGANY, CATTARAUGUS, CHAUTAUQUA, ERIE, NIAGARA AND WYOMING 700 DELAWARE AVENUE BUFFALO, NY 14209-2999 TEL. (716) 851-7165 700 DELAWARE AVENUE BUFFALO, NY 14209-2999 TEL. (716) 851-7070 80 APPENDIX F – SWPPP Preparer Certification Form The SWPPP Preparer Certification Form required by this permit begins on the following page. 81 SWPPP Preparer Certification Form SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (In accordance with CGP Part I.D.2.b., the completed form must be attached to the eNOI and submitted to NYSDEC electronically.) Project/Site Name: eNOI Submission ID: Owner/Operator Name: Certification Statement – SWPPP Preparer I hereby certify that the Stormwater Pollution Prevention Plan (SWPPP) has been prepared in accordance with the requirements of GP-0-25-001. I certify under penalty of law that the SWPPP and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. SWPPP Preparer First Name MI SWPPP Preparer Last Name Signature Date Revised: January 2025 APPENDIX G – MS4 SWPPP Acceptance Form The MS4 SWPPP Acceptance Form required by this permit begins on the following page. 83 MS4 SWPPP Acceptance Form for construction activities seeking authorization under the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (In accordance with CGP Part I.D.2.b., the completed form must be attached to the eNOI and submitted to NYSDEC electronically.) I. Project Owner/Operator Information 1. Owner/Operator Name: 2. Contact Person: 3. Street Address: 4. City/State/Zip: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/State/Zip: III. Stormwater Pollution Prevention Plan (SWPPP) Review and Acceptance Information 8. SWPPP Reviewed by: 9. Title/Position: 10. Date Final SWPPP Reviewed and Accepted: IV. Regulated MS4 Information 11. Name of MS4 Operator: 12. MS4 SPDES Permit Identification Number: NYR20A 13. Street Address: 14. City/State/Zip: 15. Telephone Number: Page 1 of 2 MS4 SWPPP Acceptance Form -continued V. Certification Statement -MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan (SWPPP) for the construction project identified in section II. of this form has been reviewed and meets the substantive requirements in the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP). Note: The MS4 Operator, through the acceptance of the SWPPP, assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP. In addition, review and acceptance of the SWPPP by the MS4 Operator does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name1: Title/Position: Signature: Date: VI. Additional Information 1 Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2. (NYSDEC -MS4 SWPPP Acceptance Form -January 2025) Page 2 of 2 APPENDIX H – NYCDEP SWPPP Acceptance/Approval Form The City of New York Department of Environmental Protection (NYCDEP) SWPPP Acceptance/Approval form required by this permit begins on the following page. 86 THE CITY OF NEW YORK DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Environmental Planning and Analysis 59-17 Junction Blvd., 9th Floor; Flushing, NY 11373 SWPPP Acceptance/Approval Application Number: I. Project Owner/Operator Information 1. Owner/Operator Name: 2. Contact Person: 3. Street Address: 4. City/State/Zip: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/State/Zip: III. Stormwater Pollution Prevention Plan (SWPPP) Review and Acceptance/Approval 8. SWPPP Reviewed by: 9. Title/Position: / 10. Date Final SWPPP Reviewed and Accepted: 11. Acceptance/Approval Expiration Date: IV. Regulated MS4 Information for projects that require coverage under the NY State Pollution Discharge Elimination System General Permit for Stormwater Discharges from Construction Activity 12. Name of MS4: CITY OF NEW YORK 13. MS4 SPDES Permit Identification Number: NY-0287890 14. Contact Person: 15. Street Address: 59-17 Junction Blvd. 9th Floor 16. City/State/Zip: Flushing, NY 11373 17. Telephone Number: Projects in the MS4 area must submit a copy of this SWPPP Acceptance with a Notice of Intent for coverage under the NY SPDES General Permit for Stormwater Discharges from Construction Activity to: NYS Department of Environmental Conservation, Division of Water; 625 Broadway, 4th Floor; Albany, New York 12233-3505. Page 1 Of 2 THE CITY OF NEW YORK DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Environmental Planning and Analysis 59-17 Junction Blvd., 9th Floor; Flushing, NY 11373 V. Certification Statement - MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan (SWPPP) for the construction project identified in question 5 has been reviewed and meets the substantive requirements in the SPDES General Permit For Stormwater Discharges from Municipal Separate Storm Sewer Systems (MS4s). Note: The MS4, through the acceptance of the SWPPP, assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP. In addition, review and acceptance of the SWPPP by the MS4 does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name: Title/Position: Signature: Date: VI. Conditions of Acceptance/Approval and Additional Information Projects in the MS4 area must submit a copy of this SWPPP Acceptance with a Notice of Intent for coverage under the NY SPDES General Permit for Stormwater Discharges from Construction Activity to: NYS Department of Environmental Conservation, Division of Water; 625 Broadway, 4th Floor; Albany, New York 12233-3505. Page 2 Of 2 APPENDIX I – MS4 No Jurisdiction Form The MS4 No Jurisdiction Form required by this permit begins on the following page. 89 MS4 No Jurisdiction Form for construction activities seeking authorization under the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (In accordance with CGP Part I.D.2.b., the completed form must be attached to the eNOI and submitted to NYSDEC electronically.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. eNOI Submission ID: III. Traditional Land Use Control MS4 Operator Information a. Name of MS4 Operator: b. MS4 SPDES Permit ID Number: NYR20A c. Street Address: d. City/State/Zip: e. Telephone Number: IV. Certification Statement In accordance with CGP Part I.D.2.b.ii.3., I hereby certify that the Traditional Land Use Control MS4 Operator identified in section III. of this form does not have review authority over the construction project identified in section II. of this form, which is owned/operated by the entity identified in section I. of this form. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2.: b. Title/Position: c. Signature: d. Date: APPENDIX J – Owner/Operator Certification Form The Owner/Operator Certification Form required by this permit begins on the following page. 91 ___________________________________________________________ ________________________________ Owner/Operator Certification Form SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (In accordance with CGP Part I.D.2.b. or Part I.F.2. and 3., the completed form must be attached to the eNOI or the Request to Continue Coverage, and submitted to NYSDEC electronically. Project/Site Name: ________________________________________________________ eNOI Submission ID: _________________________________________________ eNOI Submitted by: Owner/Operator SWPPP Preparer Other Certification Statement -Owner/Operator I hereby certify that I read, and will comply with, the GP-0-25-001 permit requirements. I understand that authorization to discharge under the permit for the project/site named above is dependent on receipt of a Letter of Authorization (LOA) or a Letter of Continued Coverage (LOCC) from the New York State Department of Environmental Conservation (NYSDEC) in accordance with CGP Part I.D.3.b. or Part I.F.4. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Owner/Operator First Name MI Owner/Operator Last Name Signature Date Revised: January 2025 Appendix G Construction Phase Inspection Report (Sample Form) LANSINGENGINEERING.COM 2452 STATE ROUTE 9 SUITE 301 | MALTA, NY | 518-899-5243 WEEKLY SWPPP SITE INSPECTION REPORT Project: Date and Time: LE Project Number: Temperature: Contractor: Ambient Conditions: Inspector’s Name/Title: Soil Conditions: NYR#: LE SIMPL: INSPECTION CHECKLIST Record Keeping Yes No N/A 1) Is the Notice of Intent and NOI Acknowledgement Letter retained at the construction site? Yes No N/A 2) Is the MS4 Acceptance Form retained at the construction site? Yes No N/A 3) Is a copy of the General Permit (GP-0-25-001) and SWPPP retained at the construction site? Yes No N/A 4) Are all necessary contractor certifications signed and retained at the construction site? Yes No N/A 5) Are SWPPP inspection reports signed and retained at the construction site? Visual Observations Yes No N/A 6) Are there currently less than 5 acres of disturbed soils at the site? Yes No N/A 7) Are natural resource areas (i.e. streams, surface waterbodies, wetlands, trees, etc.) protected with barriers or similar erosion and sediment controls? Yes No N/A 8) Have permanent stormwater controls such as sediment basins and conveyance systems been constructed? (Not applicable during beginning phases of construction) Yes No N/A 9) Were all stormwater discharges clear or the same as receiving waters on the day of inspection? This includes receiving waters, all conveyance systems (i.e. pipes, culverts, ditches, etc.) and overland flow. Please describe the quality and quantity at all points of discharge from the site and the condition of receiving waters. Yes No N/A 10) Are catch basins/storm drain inlets properly protected? Yes No N/A 11) Have vegetative or structural stabilization measures been implemented on all inactive areas where there are exposed soils? pg. 2 Visual Observations (cont’d) Yes No N/A 12) Have vegetative or structural stabilization methods been implemented on any inactive critical slopes (high probability of erosion) where there are exposed soils? Yes No N/A 13) Have on-site vehicle tracking sediments and other eroded sediments been cleared? Yes No N/A 14) Is the construction entrance preventing sediment from being tracked onto the street? Yes No N/A 15) Are roads and properties adjacent to the construction site free of sediment and/or debris? Yes No N/A 16) Is dust adequately controlled at the construction site? Yes No N/A 17) Have all erosion and sediment control practices and pollution prevention measures been installed properly and are they functioning as designed? Yes No N/A 18) Are all erosion and sediment control practices and pollution prevention measures being maintained to ensure integrity and effectiveness? Yes No N/A 19) Have all post-construction erosion and sediment controls been constructed as designed? (Not applicable during beginning phases of construction) GENERAL REMINDERS SPECIFIC COMMENTS DISCHARGE LOCATIONS & DRAINAGE PATHWAYS (areas subject to change) Location (see map) Description Discharge Receiving Waters Construction Status Comments & Recommendations pg. 3 SITE MAP CERTIFICATION Lansing Engineering Qualified Inspector Signature: Date: ACTIVE SOILS ~ 0.00 acres +/- INACTIVE SOILS NOT STABILIZED ~ 0.00 acres +/- TEMPORARILY STABILIZED SOILS ~ 0.00 acres +/- PERMANENTLY STABILIZED SOILS ~ 0.00 acres +/- Appendix H MS4 Acceptance Form MS4 SWPPP Acceptance Form for construction activities seeking authorization under the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (In accordance with CGP Part I.D.2.b., the completed form must be attached to the eNOI and submitted to NYSDEC electronically.) I. Project Owner/Operator Information 1. Owner/Operator Name: 2. Contact Person: 3. Street Address: 4. City/State/Zip: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/State/Zip: III. Stormwater Pollution Prevention Plan (SWPPP) Review and Acceptance Information 8. SWPPP Reviewed by: 9. Title/Position: 10. Date Final SWPPP Reviewed and Accepted: IV. Regulated MS4 Information 11.Name of MS4 Operator: 12. MS4 SPDES Perm it Identification Number: NYR20A 13.Street Address: 14.City/State/Zip: 15.Telephone Number: Page 1 of 2 MS4 SWPPP Acceptance Form -continued V.Certification Statement -MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan (SWPPP) for the construction project identified in section II. of this form has been reviewed and meets the substantive requirements in the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP). Note: The MS4 Operator, through the acceptance of the SWPPP, assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP. In addition, review and acceptance of the SWPPP by the MS4 Operator does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name1: Title/Position: Signature: Date: VI.Additional Information (NYSDEC - MS4 SWPPP Acceptance Form - January 2025) Page 2 of 2 1 Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2. Appendix I Notice of Intent (NOI) Appendix J Notice of Termination (NOT) Documentation eNOT Owner or Operator Certification for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. CGP SPDES Permit ID: III. Certification Statement I certify that I have met the requirements of CGP Part V.A.1., 2., 3., and 4. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the Owner or Operator: b. Title/Position: c. Signature: d. Date: eNOT Qualified Inspector Certification – SMPs for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. CGP SPDES Permit ID: III. Certification Statement I hereby certify that all the requirements in CGP Part V.A.1.a.iv. or CGP Part V.A.1.b.iv. have been achieved. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the Qualified Inspector: b. Title/Position: c. Signature: d. Date: eNOT Qualified Inspector Certification – Final Stabilization for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. CGP SPDES Permit ID: III. Certification Statement I hereby certify that all the requirements in CGP Part V.A.1.a.i., ii., and iii. or CGP Part V.A.1.b.i., ii., and iii. have been achieved. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the Qualified Inspector: b. Title/Position: c. Signature: d. Date: eNOT MS4 Acceptance for construction activities seeking termination from the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (The completed form must be attached to the eNOT, which must be submitted to NYSDEC electronically in accordance with CGP Part V.A.5.) I.Project Owner/Operator Information a.Owner/Operator Name: b.Contact Person: c.Street Address: d.City/State/Zip: II.Project Site Information a.Project/Site Name: b.Street Address: c.City/State/Zip: d.CGP SPDES Permit ID: III.Traditional Land Use Control MS4 Operator Information a.Name of MS4 Operator: b.MS4 SPDES Permit ID Number: NYR20A c.Street Address: d.City/State/Zip: e.Telephone Number: IV.Certification Statement I have determined that it is acceptable for the owner or operator of the construction project identified above to submit the electronic Notice of Termination in accordance with CGP Part V. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a.Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2.: b. Title/Position: c.Signature: d. Date: Appendix K Deep Ripping and Decompaction DEPARTMENT OF ENVIRONMENTAL CONSERVA TIONNew York State Deep-Ripping and Decompaction New York State Department of Environmental Conservation Division of Wa ter April 2008 Document Prepared by: John E. Lacey, Land Resource Consultant and Environmental Compliance Monitor (Formerly with the Division of Agricultural Protection and Development Services, NYS Dept. of Agriculture & Markets) 1 Alternative Stormwater Management  Deep‐Ripping and Decompaction            Description The two-phase practice of 1) “Deep Ripping;” and 2) “Decompaction” (deep subsoiling), of the soil material as a step in the cleanup and restoration/landscaping of a construction site, helps mitigate the physically induced impacts of soil compression; i.e.: soil compaction or the substantial increase in the bulk density of the soil material. Deep Ripping and Decompaction are key factors which help in restoring soil pore space and permeability for water infiltration. Conversely, the physical actions of cut-and-fill work, land grading, the ongoing movement of construction equipment and the transport of building materials throughout a site alter the architecture and structure of the soil, resulting in: the mixing of layers (horizons) of soil materials, compression of those materials and diminished soil porosity which, if left unchecked, severely impairs the soil’s water holding capacity and vertical drainage (rainfall infiltration), from the surface downward. In a humid climate region, compaction damage on a site is virtually guaranteed over the duration of a project. Soil in very moist to wet condition when compacted, will have severely reduced permeability. Figure 1 displays the early stage of the deep-ripping phase (Note that all topsoil was stripped prior to construction access, and it remains stockpiled until the next phase – decompaction – is complete). A heavy-duty tractor is pulling a three-shank ripper on the first of several series of incrementally deepening passes through the construction access corridor's densely compressed subsoil material. Figure 2 illustrates the approximate volumetric composition of a loam surface soil when conditions are good for plant growth, with adequate natural pore space for fluctuating moisture conditions.   Fig. 1. A typical deep ripping phase of this practice, during the first in a series of progressively deeper “rips” through severely compressed subsoil. Fig. 2. About 50% of the volume of undisturbed loam surface soil is pore space, when soil is in good condition for plant growth. Brady, 2002. 2 Recommended Application of Practice The objective of Deep Ripping and Decompaction is to effectively fracture (vertically and laterallly) through the thickness of the physically compressed subsoil material (see Figure 3), restoring soil porosity and permeability and aiding infiltration to help reduce runoff. Together with topsoil stripping, the “two-phase” practice of Deep Ripping and Decompaction first became established as a “best management practice” through ongoing success on commercial farmlands affected by heavy utility construction right-of-way projects (transmission pipelines and large power lines). Soil permeability, soil drainage and cropland productivity were restored. For broader construction application, the two-phase practice of Deep Ripping and Decompaction is best adapted to areas impacted with significant soil compaction, on contiguous open portions of large construction sites and inside long, open construction corridors used as temporary access over the duration of construction. Each mitigation area should have minimal above-and-below-ground obstructions for the easy avoidance and maneuvering of a large tractor and ripping/decompacting implements. Conversely, the complete two-phase practice is not recommended in congested or obstructed areas due to the limitations on tractor and implement movement. Benefits Aggressive “deep ripping” through the compressed thickness of exposed subsoil before the replacement/respreading of the topsoil layer, followed by “decompaction,” i.e.: “sub-soiling,” through the restored topsoil layer down into the subsoil, offers the following benefits: • Increases the project (larger size) area’s direct surface infiltration of rainfall by providing the open site’s mitigated soil condition and lowers the demand on concentrated runoff control structures • Enhances direct groundwater recharge through greater dispersion across and through a broader surface than afforded by some runoff-control structural measures • Decreases runoff volume generated and provides hydrologic source control • May be planned for application in feasible open locations either alone or in Fig. 3. Construction site with significant compaction of the deep basal till subsoil extends 24 inches below this exposed cut- and-fill work surface. 3 conjunction with plans for structural practices (e.g., subsurface drain line or infiltration basin) serving the same or contiguous areas • Promotes successful long-term revegetation by restoring soil permeability, drainage and water holding capacity for healthy (rather than restricted) root-system development of trees, shrubs and deep rooted ground cover, minimizing plant drowning during wet periods and burnout during dry periods. Feasibility/Limitations The effectiveness of Deep Ripping and Decompaction is governed mostly by site factors such as: the original (undisturbed) soil’s hydrologic characteristics; the general slope; local weather/timing (soil moisture) for implementation; the space-related freedom of equipment/implement maneuverability (noted above in Recommended Application of Practice), and by the proper selection and operation of tractor and implements (explained below in Design Guidance). The more notable site-related factors include: Soil In the undisturbed condition, each identified soil type comprising a site is grouped into one of four categories of soil hydrology, Hydrologic Soil Group A, B, C or D, determined primarily by a range of characteristics including soil texture, drainage capability when thoroughly wet, and depth to water table. The natural rates of infiltration and transmission of soil-water through the undisturbed soil layers for Group A is “high” with a low runoff potential while soils in Group B are moderate in infiltration and the transmission of soil-water with a moderate runoff potential, depending somewhat on slope. Soils in Group C have slow rates of infiltration and transmission of soil-water and a moderately high runoff potential influenced by soil texture and slope; while soils in Group D have exceptionally slow rates of infiltration and transmission of soil- water, and high runoff potential. In Figure 4, the profile displays the undisturbed horizons of a soil in Hydrologic Soil Group C and the naturally slow rate of infiltration through the subsoil. The slow rate of infiltration begins immediately below the topsoil horizon (30 cm), due to the limited amount of macro pores, e.g.: natural subsoil fractures, worm holes and root channels. Infiltration after the construction-induced mixing and compression of such subsoil material is virtually absent; but can be restored back to this natural level with the two-phase practice of deep ripping and decompaction, followed by the permanent establishment of an appropriate, deep taproot Fig. 4. Profile (in centimeters) displaying the infiltration test result of the natural undisturbed horizons of a soil in Hydrologic Soil Group C. 4 lawn/ground cover to help maintain the restored subsoil structure. Infiltration after construction- induced mixing and compression of such subsoil material can be notably rehabilitated with the Deep Ripping and Decompaction practice, which prepares the site for the appropriate long-term lawn/ground cover mix including deep taproot plants such as clover, fescue or trefoil, etc. needed for all rehabilitated soils. Generally, soils in Hydrologic Soil Groups A and B, which respectively may include deep, well- drained, sandy-gravelly materials or deep, moderately well-drained basal till materials, are among the easier ones to restore permeability and infiltration, by deep ripping and decompaction. Among the many different soils in Hydrologic Soil Group C are those unique glacial tills having a natural fragipan zone, beginning about 12 to 18 inches (30 – 45cm), below surface. Although soils in Hydrologic Soil Group C do require a somewhat more carefully applied level of the Deep Ripping and Decompaction practice, it can greatly benefit such affected areas by reducing the runoff and fostering infiltration to a level equal to that of pre-disturbance. Soils in Hydrologic Soil Group D typically have a permanent high water table close to the surface, influenced by a clay or other highly impervious layer of material. In many locations with clay subsoil material, the bulk density is so naturally high that heavy trafficking has little or no added impact on infiltration; and structural runoff control practices rather than Deep Ripping and Decompaction should be considered. The information about Hydrologic Soil Groups is merely a general guideline. Site-specific data such as limited depths of cut-and-fill grading with minimal removal or translocation of the inherent subsoil materials (as analyzed in the county soil survey) or, conversely, the excavation and translocation of deeper, unconsolidated substratum or consolidated bedrock materials (unlike the analyzed subsoil horizons’ materials referred to in the county soil survey) should always be taken into account. Sites made up with significant quantities of large rocks, or having a very shallow depth to bedrock, are not conducive to deep ripping and decompation (subsoiling); and other measures may be more practical. Slope The two-phase application of 1) deep ripping and 2) decompaction (deep subsoiling), is most practical on flat, gentle and moderate slopes. In some situations, such as but not limited to temporary construction access corridors, inclusion areas that are moderately steep along a project’s otherwise gentle or moderate slope may also be deep ripped and decompacted. For limited instances of moderate steepness on other projects, however, the post-construction land use and the relative alignment of the potential ripping and decompaction work in relation to the lay of the slope should be reviewed for safety and practicality. In broad construction areas predominated by moderately steep or steep slopes, the practice is generally not used. Local Weather/Timing/Soil Moisture Effective fracturing of compressed subsoil material from the exposed work surface, laterally and vertically down through the affected zone is achieved only when the soil material is moderately dry to moderately moist. Neither one of the two-phases, deep ripping nor decompaction (deep 5 Fig. 5. Augered from a depth of 19 inches below the surface of the replaced topsoil, this subsoil sample was hand rolled to a 1/8-inch diameter. The test shows the soil at this site stretches out too far without crumbling; it indicates the material is in a plastic state of consistence, too wet for final decompaction (deep subsoiling) at this time. subsoiling), can be effectively conducted when the soil material (subsoil or replaced topsoil) is in either a “plastic” or “liquid” state of soil consistency. Pulling the respective implements legs through the soil when it is overly moist only results in the “slicing and smearing” of the material or added “squeezing and compression” instead of the necessary fracturing. Ample drying time is needed for a “rippable” soil condition not merely in the material close to the surface, but throughout the material located down to the bottom of the physically compressed zone of the subsoil. The “poor man’s Atterberg field test” for soil plasticity is a simple “hand-roll” method used for quick, on-site determination of whether or not the moisture level of the affected soil material is low enough for: effective deep ripping of subsoil; respreading of topsoil in a friable state; and final decompaction (deep subsoiling). Using a sample of soil material obtained from the planned bottom depth of ripping, e.g.: 20 - 24 inches below exposed subsoil surface, the sample is hand rolled between the palms down to a 1/8-inch diameter thread. (Use the same test for stored topsoil material before respreading on the site.) If the respective soil sample crumbles apart in segments no greater than 3/8 of an inch long, by the time it is rolled down to 1/8 inch diameter, it is low enough in moisture for deep ripping (or topsoil replacement), and decompaction. Conversely, as shown in Figure 5, if the rolled sample stretches out in increments greater than 3/8 of an inch long before crumbling, it is in a “plastic” state of soil consistency and is too wet for subsoil ripping (as well as topsoil replacement) and final decompaction. Design Guidance Beyond the above-noted site factors, a vital requirement for the effective Deep Ripping and Decompaction (deep subsoiling), is implementing the practice in its distinct, two-phase process: 1) Deep rip the affected thickness of exposed subsoil material (see Figure 10 and 11), aggressively fracturing it before the protected topsoil is reapplied on the site (see Figure 12); and 2) Decompact (deep subsoil), simultaneously through the restored topsoil layer and the upper half of the affected subsoil (Figure 13). The second phase, “decompaction,” mitigates the partial recompaction which occurs during the heavy process of topsoil spreading/grading. Prior to deep ripping and decompacting the site, all construction activity, including construction equipment and material storage, site cleanup and trafficking (Figure 14), should be finished; and the site closed off to further disturbance. Likewise, once the practice is underway and the area’s soil permeability and 6 Fig. 6. A light duty chisel implement, not adequate for either the deep ripping or decompaction (deep subsoiling) phase. rainfall infiltration are being restored, a policy limiting all further traffic to permanent travel lanes is maintained. The other critical elements, outlined below, are: using the proper implements (deep, heavy-duty rippers and subsoilers), and ample pulling-power equipment (tractors); and conducting the practice at the appropriate speed, depth and pattern(s) of movement. Note that an appropriate plan for the separate practice of establishing a healthy perennial ground cover, with deep rooting to help maintain the restored soil structure, should be developed in advance. This may require the assistance of an agronomist or landscape horticulturist. Implements Avoid the use of all undersize implements. The small-to-medium, light-duty tool will, at best, only “scarify” the uppermost surface portion of the mass of compacted subsoil material. The term “chisel plow” is commonly but incorrectly applied to a broad range of implements. While a few may be adapted for the moderate subsoiling of non-impacted soils, the majority are less durable and used for only lighter land-fitting (see Figure 6). Use a “heavy duty” agricultural-grade, deep ripper (see Figures 7,9,10 and 11) for the first phase: the lateral and vertical fracturing of the mass of exposed and compressed subsoil, down and through, to the bottom of impact, prior to the replacement of the topsoil layer. (Any oversize rocks which are uplifted to the subsoil surface during the deep ripping phase are picked and removed.) Like the heavy-duty class of implement for the first phase, the decompaction (deep subsoiling) of Phase 2 is conducted with the heavy-duty version of the deep subsoiler. More preferable is the angled-leg variety of deep subsoiler (shown in Figures 8 and 13). It minimizes the inversion of the subsoil and topsoil layers while laterally and vertically fracturing the upper half of the previously ripped subsoil layer and all of the topsoil layer by delivering a momentary, wave-like “lifting and shattering” action up through the soil layers as it is pulled. Fig. 7. One of several variations of an agricultural ripper. This unit has long, rugged shanks mounted on a steel V-frame for deep, aggressive fracturing through Phase 1. 7 Fig. 8. A deep, angled-leg subsoiler, ideal for Phase 2 decompaction of after the topsoil layer is graded on top of the ripped subsoil. Pulling-Power of Equipment Use the following rule of thumb for tractor horsepower (hp) whenever deep ripping and decompacting a significantly impacted site: For both types of implement, have at least 40 hp of tractor pull available for each mounted shank/ leg. Using the examples of a 3-shank and a 5-shank implement, the respective tractors should have 120 and 200 hp available for fracturing down to the final depth of 20-to-24 inches per phase. Final depth for the deep ripping in Phase 1 is achieved incrementally by a progressive series of passes (see Depth and Patterns of Movement, below); while for Phase 2, the full operating depth of the deep subsoiler is applied from the beginning. The operating speed for pulling both types of implement should not exceed 2 to 3 mph. At this slow and managed rate of operating speed, maximum functional performance is sustained by the tractor and the implement performing the soil fracturing. Referring to Figure 8, the implement is the 6-leg version of the deep angled-leg subsoiler. Its two outside legs are “chained up” so that only four legs will be engaged (at the maximum depth), requiring no less than 160 hp, (rather than 240 hp) of pull. The 4-wheel drive, articulated-frame tractor in Figure 8 is 174 hp. It will be decompacting this unobstructed, former construction access area simultaneously through 11 inches of replaced topsoil and the upper 12 inches of the previously deep-ripped subsoil. In constricted areas of Phase 1) Deep Ripping, a medium-size tractor with adequate hp, such as the one in Figure 9 pulling a 3-shank deep ripper, may be more maneuverable. Some industrial-grade variations of ripping implements are attached to power graders and bulldozers. Although highly durable, they are generally not recommended. Typically, the shanks or “teeth” of these rippers are too short and stout; and they are mounted too far apart to achieve the well-distributed type of lateral and vertical fracturing of the soil materials necessary to restore soil permeability and infiltration. In addition, the power graders and bulldozers, as pullers, are far less maneuverable for turns and patterns than the tractor. Fig. 9. This medium tractor is pulling a 3- shank deep ripper. The severely compacted construction access corridor is narrow, and the 120 hp tractor is more maneuverable for Phase 1 deep ripping (subsoil fracturing), here. 8 Depth and Patterns of Movement As previously noted both Phase 1 Deep Ripping through significantly compressed, exposed subsoil and Phase 2 Decompaction (deep subsoiling) through the replaced topsoil and upper subsoil need to be performed at maximum capable depth of each implement. With an implement’s guide wheels attached, some have a “normal” maximum operating depth of 18 inches, while others may go deeper. In many situations, however, the tractor/implement operator must first remove the guide wheels and other non essential elements from the implement. This adapts the ripper or the deep subsoiler for skillful pulling with its frame only a few inches above surface, while the shanks or legs, fracture the soil material 20-to-24 inches deep. There may be construction sites where the depth of the exposed subsoil’s compression is moderate, e.g.: 12 inches, rather than deep. This can be verified by using a ¾ inch cone penetrometer and a shovel to test the subsoil for its level of compaction, incrementally, every three inches of increasing depth. Once the full thickness of the subsoil’s compacted zone is finally “pieced” and there is a significant drop in the psi measurements of the soil penetrometer, the depth/thickness of compaction is determined. This is repeated at several representative locations of the construction site. If the thickness of the site’s subsoil compaction is verified as, for example, ten inches, then the Phase 1 Deep Ripping can be correspondingly reduced to the implement’s minimum operable depth of 12 inches. However, the Phase 2 simultaneous Decompation (subsoiling) of an 11 inch thick layer of replaced topsoil and the upper subsoil should run at the subsoiling implements full operating depth. Typically, three separate series (patterns) are used for both the Phase 1 Deep Ripping and the Phase 2 Decompaction on significantly compacted sites. For Phase 1, each series begins with a moderate depth of rip and, by repeat-pass, continues until full depth is reached. Phase 2 applies the full depth of Decompation (subsoiling), from the beginning. Every separate series (pattern) consists of parallel, forward-and-return runs, with each progressive Fig. 11. A repeat run of the 3-shank ripper along the same patterned pass area as Fig. 9; here, incrementally reaching 18 of the needed 22 inches of subsoil fracture. Fig. 10. An early pass with a 3-shank deep ripper penetrating only 8 inches into this worksite’s severely compressed subsoil. 9 pass of the implement’s legs or shanks evenly staggered between those from the previous pass. This compensates for the shank or leg-spacing on the implement, e.g., with 24-to-30 inches between each shank or leg. The staggered return pass ensures lateral and vertical fracturing actuated every 12 to 15 inches across the densely compressed soil mass. Large, Unobstructed Areas For larger easy areas, use the standard patterns of movement: ● The first series (pattern) of passes is applied lengthwise, parallel with the longest spread of the site; gradually progressing across the site’s width, with each successive pass. ● The second series runs obliquely, crossing the first series at an angle of about 45 degrees. ● The third series runs at right angle (or 90 degrees), to the first series to complete the fracturing and shattering on severely compacted sites, and avoid leaving large unbroken blocks of compressed soil material. (In certain instances, the third series may be optional, depending on how thoroughly the first two series loosen the material and eliminate large chunks/blocks of material as verified by tests with a ¾- inch cone penetrometer.) Corridors In long corridors of limited width and less maneuverability than larger sites, e.g.: along compacted areas used as temporary construction access, a modified series of pattern passes are used. ● First, apply the same initial lengthwise, parallel series of passes described above. Fig. 12. Moderately dry topsoil is being replaced on the affected site now that Phase 1 deep ripping of the compressed subsoil is complete. Fig. 13. The same deep, angled-leg subsoiler shown in Fig. 7 is engaged at maximum depth for Phase 2, decompaction (deep soiling), of the replaced topsoil and the upper subsoil materials. 10 Fig. 15. The same site as Fig. 14 after deep ripping of the exposed subsoil, topsoil replacement, decompaction through the topsoil and upper subsoil and final surface tillage and revegetation to maintain soil permeability and infiltration. ● A second series of passes makes a broad “S” shaped pattern of rips, continually and gradually alternating the “S” curves between opposite edges inside the compacted corridor. ● The third and final series again uses the broad, alternating S pattern, but it is “flip-flopped” to continually cross the previous S pattern along the corridor’s centerline. This final series of the S pattern curves back along the edge areas skipped by the second series. Maintenance and Cost Once the two-phase practice of Deep Ripping and Decompation is completed, two items are essential for maintaining a site’s soil porosity and permeability for infiltration. They are: planting and maintaining the appropriate ground cover with deep roots to maintain the soil structure (see Figure 15); and keeping the site free of traffic or other weight loads. Note that site-specific choice of an appropriate vegetative ground-cover seed mix, including the proper seeding ratio of one or more perennial species with a deep taproot system and the proper amount of lime and soil nutrients (fertilizer mix) adapted to the soil-needs, are basic to the final practice of landscaping, i.e: surface tillage, seeding/planting/fertilizing and culti-packing or mulching is applied. The "maintenance" of an effectively deep-ripped and decompacted area is generally limited to the successful perennial (long-term) landscape ground cover; as long as no weight-bearing force of soil compaction is applied. Fig. 14. The severely compacted soil of a temporary construction yard used daily by heavy equipment for four months; shown before deep ripping, topsoil replacement, and decompaction. 11 The Deep Ripping and Decompaction practice is, by necessity, more extensive than periodic subsoiling of farmland.The cost of deep ripping and decompacting (deep subsoiling), will vary according to the depth and severity of soil-material compression and the relative amount of tractor and implement time that is required. In some instances, depending on open maneuverability, two-to-three acres of compacted project area may be deep-ripped in one day. In other situations of more severe compaction and - or less maneuverability, as little as one acre may be fully ripped in a day. Generally, if the Phase 1) Deep Ripping is fully effective, the Phase 2) Decompaction should be completed in 2/3 to 3/4 of the time required for Phase 1. Using the example of two acres of Phase 1) Deep Ripping in one day, at $1800 per day, the net cost is $900 per acre. If the Phase 2) Decompacting or deep subsoiling takes 3/4 the time as Phase 1, it costs $675 per acre for a combined total of $1575 per acre to complete the practice (these figures do not include the cost of the separate practice of topsoil stripping and replacement). Due to the many variables, it must be recognized that cost will be determined by the specific conditions or constraints of the site and the availability of proper equipment. 12 Resources Publications:  ● American  Society of  Agricultural Engineers. 1971.  Compaction of  Agricultural  Soils.  ASAE.    ● Brady, N.C., and R.R. Weil. 2002.  The  Nature  and  Properties  of  Soils. 13th ed. Pearson Education, Inc.    ● Baver, L.D. 1948. Soil Physics. John Wiley & Sons.    ● Carpachi, N. 1987 (1995 fifth printing). Excavation and Grading Handbook, Revised.  2nd ed. Craftsman Book  Company  ● Ellis, B. (Editor). 1997.  Safe & Easy Lawn Care:  The Complete Guide to Organic Low Maintenance Lawn.   Houghton Mifflin.    ● Harpstead, M.I., T.J. Sauer, and W.F. Bennett. 2001.  Soil Science Simplified. 4th ed. Iowa State University   Press.    ●  Magdoff, F.,  and  H. van Es.  2000.  Building Soils  for  Better Crops. 2nd ed. Sustainable Agricultural  Networks    ●  McCarthy, D.F. 1993. Essentials of Soil Mechanics and Foundations, Basic Geotechnics 4th ed. Regents/Prentice  Hall.    ●      Plaster, E.J. 1992. Soil Science & Management. 3rd ed. Delmar Publishers.    ●   Union Gas Limited, Ontario, Canada. 1984. Rehabilitation of Agricultural Lands, Dawn‐Kerwood  Loop   Pipeline;   Technical   Report.   Ecological   Services  for  Planning,  Ltd.; Robinson, Merritt & Devries,  Ltd. and Smith, Hoffman Associates, Ltd.    ●   US Department of Agriculture in cooperation with Cornell University Agricultural Experiment  Station.   Various years.  Soil  Survey of  (various names)  County,  New York. USDA.    Internet Access:  ●    Examples of implements:    V‐Rippers.  Access by  internet search of John Deere Ag ‐New Equipment   for  915  (larger‐frame model)  V‐ Rippe;  and,   for 913  (smaller‐frame model) V‐Ripper.  Deep, angled‐leg subsoiler.  Access  by  internet  search  of: Bigham  Brothers Shear Bolt  Paratill‐Subsoiler.  http://salesmanual.deere.com/sales/salesmanual/en_NA/primary_tillage/2008/feature/rippers/915v_pattern_frame.html?sbu=a g&link=prodcat Last visited March 08.    ● Soils data of USDA Natural Resources Conservation Service. NRCS Web Soil Survey.               http://websoilsurvey.nrcs.usda.gov/app/   and  USDA‐NRCS  Official  Soil  Series Descriptions; View by  Name. http://ortho.ftw.nrcs.usda.gov/cgi‐bin/osd/osdname.cgi . Last visited Jan. 08.    ●  Soil  penetrometer  information.  Access  by   internet  searches  of:   Diagnosing Soil Compaction   using  a  Penetrometer (soil compaction tester), PSU Extension;  as  well  as Dickey‐john Soil Compaction Tester.  http://www.dickey-johnproducts.com/pdf/SoilCompactionTest.pdf and http://cropsoil.psu.edu/Extension/Facts/uc178pdf Last  visited Sept. 07  Appendix L Permit Eligibilty KATHY HOCHUL Governor RANDY SIMONS Commissioner Pro Tempore February 26, 2025 Jennifer Geraghty Hartgen Archeological Associates 1744 Washington Avenue Ext. Rensselaer, NY 12144 Re: DEC Finley Street Multi-Family Residential Development Finley Street (Parcel Id: 178.26-1-47), Saratoga Springs, Saratoga County, NY 25PR01350 Dear Jennifer Geraghty: Thank you for requesting the comments of the Office of Parks, Recreation and Historic Preservation (OPRHP). We have reviewed the project in accordance with the New York State Historic Preservation Act of 1980 (Section 14.09 of the New York Parks, Recreation and Historic Preservation Law). These comments are those of the OPRHP and relate only to Historic/Cultural resources. They do not include potential environmental impacts to New York State Parkland that may be involved in or near your project. Based upon this review, it is the opinion of OPRHP that no properties, including archaeological and/or historic resources, listed in or eligible for the New York State and National Registers of Historic Places will be impacted by this project. If further correspondence is required regarding this project, please be sure to refer to the OPRHP Project Review (PR) number noted above. If you have any questions, please contact Julie Maresco at the following email address: Julie.Maresco@parks.ny.gov Sincerely, R. Daniel Mackay Deputy Commissioner for Historic Preservation Division for Historic Preservation New York State Office of Parks, Recreation and Historic Preservation Division for Historic Preservation, Peebles Island, PO Box 189, Waterford, New York 12188-0189 (518) 237-8643 • https://parks.ny.gov/shpo 1 | Page Gilbert VanGuilder Land Surveyor, PLLC 988 Route 146, Clifton Park, NY 12065 518-383-0634 FAX 371-8437 Endangered Species Habitat Suitability Assessment Report Finley Street City of Saratoga Springs Saratoga County, New York April 26, 2025 Prepared By: Kevin Weed, PLS Environmental Scientist 2 | Page Table of Contents Endangered Species Habitat Suitability Assessment Report 3-5 Figure 1: Site Location Map 6 Figure 2: Site Aerial Map 7 Figure 3: N.Y.S.D.E.C. Rare Plants or Animals Mapping 8 Figure 4: IPaC Resource List 9-21 Karner Blue Northeast DKey……………………………………………………………………..……………22-30 3 | Page Endangered Species Habitat Suitability Assessment Report This letter and enclosed information were prepared in summary of a habitat study performed on April 25, 2025 for an approximately 4 acre parcel located on the south side of Finley Street in the City of Saratoga Springs, (TMP#178.26-1-47). The site is located approximately 450 feet East of N.Y.S. Route 50 (Ballston Ave). The site is currently partially wooded and contains a commercial building and associated parking area. There is a proposed site plan being considered for this property including an apartment building, an office building, and associated appurtenances such as parking lots and stormwater management area. An inquiry was submitted to U.S. Fish and Wildlife Service through the IPaC website to identify any potential threatened/endangered species that may occur within the subject parcel. The Service identified the Northern Long-eared Bat (Myotis septentrionalis), and Karner Blue Butterfly (Lycaeides melissa samuelis) as the only threatened or endangered species potentially being present. A habitat suitability assessment was completed for these species. Species Requirements: Karner Blue Butterfly: According to the U.S. Fish and Wildlife Service’s website, “Karner blues are found in the northern range of wild lupine habitat. Wild Lupine (Lupinus perennis) is an attractively flowered plant that occurs in pine barrens and oak savannas in Indiana, Michigan, Minnesota, New Hampshire, New York, and Wisconsin. The Karner Blue’s habitat is a patchwork of pine and scrub oak scattered among open grassy areas. Historically, a network of these openings among the trees was maintained by wildfire and at one time, the butterfly was found in this habitat in a nearly continuous narrow band across 10 states and one province. Today it has been eliminated from at least five of these states. Karner blue caterpillars feed only on the leaves of the wild lupine plant. Adults feed on the nectar of flowering plants. This severely restricts where they can survive.” Northern Long-eared Bat: According to the U.S. Fish and Wildlife Service’s website, “During summer, northern long-eared bats roost singly or in colonies underneath bark, in cavities, or in crevices of both living and dead trees. Males and non-reproductive females may also roost in cooler places, like caves and mines. This bat seems opportunistic in selecting roosts, using tree species based on suitability to retain bark or provide cavities or crevices. It has also been found, rarely, roosting in structures like barns and sheds. Northern long-eared bats spend winter hibernating in caves and mines, called hibernacula. They typically use large caves or mines with large passages and entrances; constant temperatures; and high humidity with no air currents. Specific areas where they hibernate have very high humidity, so much so that droplets of water are often seen on their fur. Within hibernacula, surveyors find them in small crevices or cracks, often with only the nose and ears visible. Northern long-eared bats emerge at dusk to fly through the understory of forested hillsides and ridges feeding on moths, flies, leafhoppers, caddisflies, and beetles, which 4 | Page they catch while in flight using echolocation. This bat also feeds by gleaning motionless insects from vegetation and water surfaces.” Habitat Suitability: Karner Blue Butterfly: Currently the area of review consists of an existing commercial building, parking area, and forested areas. Any unforested areas on the site lack an overhead canopy and consists of sandy soils which is suitable for Wild Lupine to grow. However, due to the regular maintenance of the site there has not been enough time for Wild Lupine to become established and grow. Therefore, the potential for Wild Lupine to be present is very minimal. Since the potential for Wild Lupine to be present is very minimal, the potential for Karner Blue Butterfly to be present is also very minimal. The forested areas on the site show no signs of natural disturbance and have a greater than 50 percent canopy that would prohibit the growth of Wild Lupine. Furthermore, while onsite performing the habitat assessment no Karner Blue Butterflies were seen. This habitat assessment was performed according to the Karner Blue Butterfly (Lycaeides Melissa samuelis) Survey Protocols Within the State of New York, Prepared by: U.S. Fish and Wildlife Service (Service), New York Field Office New York State Department of Environmental Conservation (NYSDEC), dated May 2008. https://www.fws.gov/northeast/nyfo/es/KBBPASurveyProtocols12May2008.pdf The survey protocol requirements state that there are four phases of the butterfly surveys, in which the first step is a preliminary site assessment needed to identify potential butterfly habitat. If during the preliminary site assessment any of the following factors occur onsite, it will disqualify a part or all of the site from needing further assessment. ● Agriculture: exclude only active row-cropped agricultural lands and fallow fields [Note that other open agricultural areas may support host plants and may be included]; ● Active management: exclude areas with ongoing land management, forestry, or construction operations that will temporarily impede surveys, access, or habitat phenology; ● Mowed/lawn/hay: exclude areas regularly mowed during the growing season including lawns and some hay fields [Note that warm season grasses, such as little bluestem grass, are typically not harvested until after host plants have senesced and flight period is complete and may be included]; ● Paved/developed: exclude paved and non-vegetated developed areas such as parking lots, buildings, and roads; ● Closed canopy: exclude areas with >50% canopy cover (only if there are no openings, trails, or paths through such areas); such areas will have shade for most or all of the day; ● Wet soil: exclude areas with non-sandy or poorly drained soils; ● Thick vegetation: exclude areas with complete shrub or herbaceous cover other than the host plant; ● Imminent conversion: exclude areas where conversion/development of the habitat is immediately imminent. 5 | Page Therefore, because the site consists entirely of three of the listed factors (Mowed/lawn/hay, Closed canopy and paved/developed) further assessment of the site is not necessary. Furthermore, a U.S. Fish and Wildlife Service Northeast DKey determination was performed for this project and resulted in a determination of “No Effect” and is attached hereto. Northern Long-eared Bat: For the proposed project approximately 3± acres of tree clearing are proposed. The dominant tree species present within the project limits consist of Northern Red Oak (Quercus rubra), Black Locust (Robinia pseudoacacia), Black Cherry (Prunus serotina), Red Maple (Acer rubrum), and White Pine (Pinus strobus) and there were several standing and fallen snags. Several of the dominant trees present within the project limits do exhibit characteristics of suitable roosting habitat such as crevices and holes. According to the U.S. Fish and Wildlife Service this property is not located within a mile of a known winter hibernacula, or a known maternity roost, There are no wetlands on or near the subject parcel, and therefore no over- abundance of flying insects. Although the subject property does contain trees with suitable roosting habitat, the project applicant has committed to limiting any necessary tree clearing to only the minimum necessary, and only between November 1 to March 31 of any given year. With this condition, the U.S. Fish and Wildlife Service has identified that the Northern Long-eared Bat are likely to be in their hibernacula and are not likely to occur in the forested habitat on the site. Therefore, even though this project may result in a reduction in potential Northern Long-eared Bat roosting habitat, it is highly unlikely to result in a taking of the species. This project will also have no effect on foraging habitat for the species. Respectfully, Kevin Weed Kevin Weed, PLS Environmental Scientist 6 | Page Figure 1: Site Location Map 7 | Page Figure 2: Site Aerial Map 8 | Page Figure 3: N.Y.S.D.E.C. Rare Plant or Animals Mapping 9 | Page Figure 4: IPaC Resource List IPaC resource list This report is an automatically generated list of species and other resources such as critical habitat (collectively referred to as trust resources) under the U.S. Fish and Wildlife Service's (USFWS) jurisdiction that are known or expected to be on or near the project area referenced below. The list may also include trust resources that occur outside of the project area, but that could potentially be directly or indirectly affected by activities in the project area. However, determining the likelihood and extent of effects a project may have on trust resources typically requires gathering additional site-specific (e.g., vegetation/species surveys) and project-specific (e.g., magnitude and timing of proposed activities) information. Below is a summary of the project information you provided and contact information for the USFWS office(s) with jurisdiction in the defined project area. Please read the introduction to each section that follows (Endangered Species, Migratory Birds, USFWS Facilities, and NWI Wetlands) for additional information applicable to the trust resources addressed in that section. Location Saratoga County, New York Local oce New York Ecological Services Field Office  (607) 753-9334  (607) 753-9699  fw5es_nyfo@fws.gov U.S. Fish & Wildlife ServiceIPaC 3817 Luker Road Cortland, NY 13045-9385 https:/ / www.fws.gov/ northeast/ NYFO/ Endangered species This resource list is for informational purposes only and does not constitute an analysis of project level impacts. The primary information used to generate this list is the known or expected range of each species. Additional areas of influence (AOI) for species are also considered. An AOI includes areas outside of the species range if the species could be indirectly affected by activities in that area (e.g., placing a dam upstream of a fish population even if that fish does not occur at the dam site, may indirectly impact the species by reducing or eliminating water flow downstream). Because species can move, and site conditions can change, the species on this list are not guaranteed to be found on or near the project area. To fully determine any potential effects to species, additional site- specific and project-specific information is often required. Section 7 of the Endangered Species Act requires Federal agencies to "request of the Secretary information whether any species which is listed or proposed to be listed may be present in the area of such proposed action" for any project that is conducted, permitted, funded, or licensed by any Federal agency. A letter from the local office and a species list which fulfills this requirement can only be obtained by requesting an official species list from either the Regulatory Review section in IPaC (see directions below) or from the local field office directly. For project evaluations that require USFWS concurrence/review, please return to the IPaC website and request an official species list by doing the following: 1. Draw the project location and click CONTINUE. 2. Click DEFINE PROJECT. 3. Log in (if directed to do so). 4. Provide a name and description for your project. 5. Click REQUEST SPECIES LIST. Listed species and their critical habitats are managed by the Ecological Services Program of the U.S. Fish and Wildlife Service (USFWS) and the fisheries division of the National Oceanic and Atmospheric Administration (NOAA Fisheries ). Species and critical habitats under the sole responsibility of NOAA Fisheries are not shown on this list. Please contact NOAA Fisheries for species under their jurisdiction. 1. Species listed under the Endangered Species Act are threatened or endangered; IPaC also shows species that are candidates, or proposed, for listing. See the listing status page for more information. IPaC only shows species that are regulated by USFWS (see FAQ). 2. NOAA Fisheries, also known as the National Marine Fisheries Service (NMFS), is an office of the National Oceanic and Atmospheric Administration within the Department of Commerce. 1 2 The following species are potentially affected by activities in this location: Mammals Insects Critical habitats Potential effects to critical habitat(s) in this location must be analyzed along with the endangered species themselves. There are no critical habitats at this location. You are still required to determine if your project(s) may have eects on all above listed species. NAME STATUS Northern Long-eared Bat Myotis septentrionalis Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/9045 Endangered Tricolored Bat Perimyotis subflavus Wherever found No critical habitat has been designated for this species. https://ecos.fws.gov/ecp/species/10515 Proposed Endangered NAME STATUS Karner Blue Butterfly Lycaeides melissa samuelis Wherever found There is proposed critical habitat for this species. https://ecos.fws.gov/ecp/species/6656 Endangered Monarch Butterfly Danaus plexippus Wherever found There is proposed critical habitat for this species. Your location does not overlap the critical habitat. https://ecos.fws.gov/ecp/species/9743 Proposed Threatened Bald & Golden Eagles Bald and Golden Eagle information is not available at this time Bald & Golden Eagles FAQs What does IPaC use to generate the potential presence of bald and golden eagles in my specified location? The potential for eagle presence is derived from data provided by the Avian Knowledge Network (AKN). The AKN data is based on a growing collection of survey, banding, and citizen science datasets and is queried and filtered to return a list of those birds reported as occurring in the 10km grid cell(s) which your project intersects, and that have been identified as warranting special attention because they are an eagle (Bald and Golden Eagle Protection Act requirements may apply). Proper interpretation and use of your eagle report Bald and Golden Eagles are protected under the Bald and Golden Eagle Protection Act and the Migratory Bird Treaty Act (MBTA) . Any person or organization who plans or conducts activities that may result in impacts to Bald or Golden Eagles, or their nests, should follow appropriate regulations and implement required avoidance and minimization measures, as described in the various links on this page. The data in this location indicates that no eagles have been observed in this area. This does not mean eagles are not present in your project area, especially if the area is difficult to survey. Please review the 'Steps to Take When No Results Are Returned' section of the Supplemental Information on Migratory Birds and Eagles document to determine if your project is in a poorly surveyed area. If it is, you may need to rely on other resources to determine if eagles may be present (e.g. your local FWS field office, state surveys, your own surveys). Additional information can be found using the following links: Eagle Management https://www.fws.gov/program/eagle-management Measures for avoiding and minimizing impacts to birds https://www.fws.gov/library/collections/avoiding-and-minimizing-incidental-take-migratory-birds Nationwide avoidance and minimization measures for birds https://www.fws.gov/sites/default/files/documents/nationwide-standard-conservation- measures.pdf Supplemental Information for Migratory Birds and Eagles in IPaC https://www.fws.gov/media/supplemental-information-migratory-birds-and-bald-and-golden- eagles-may-occur-project-action 2 1 On the graphs provided, please look carefully at the survey effort (indicated by the black vertical line) and for the existence of the "no data" indicator (a red horizontal line). A high survey effort is the key component. If the survey effort is high, then the probability of presence score can be viewed as more dependable. In contrast, a low survey effort line or no data line (red horizontal) means a lack of data and, therefore, a lack of certainty about presence of the species. This list is not perfect; it is simply a starting point for identifying what birds have the potential to be in your project area, when they might be there, and if they might be breeding (which means nests might be present). The list and associated information help you know what to look for to confirm presence and helps guide you in knowing when to implement avoidance and minimization measures to eliminate or reduce potential impacts from your project activities or get the appropriate permits should presence be confirmed. How do I know if eagles are breeding, wintering, or migrating in my area? To see what part of a particular bird's range your project area falls within (i.e. breeding, wintering, migrating, or resident), you may query your location using the RAIL Tool and view the range maps provided for birds in your area at the bottom of the profiles provided for each bird in your results. If an eagle on your IPaC migratory bird species list has a breeding season associated with it (indicated by yellow vertical bars on the phenology graph in your “IPaC PROBABILITY OF PRESENCE SUMMARY” at the top of your results list), there may be nests present at some point within the timeframe specified. If "Breeds elsewhere" is indicated, then the bird likely does not breed in your project area. Interpreting the Probability of Presence Graphs Each green bar represents the bird's relative probability of presence in the 10km grid cell(s) your project overlaps during a particular week of the year. A taller bar indicates a higher probability of species presence. The survey effort can be used to establish a level of confidence in the presence score. How is the probability of presence score calculated? The calculation is done in three steps: The probability of presence for each week is calculated as the number of survey events in the week where the species was detected divided by the total number of survey events for that week. For example, if in week 12 there were 20 survey events and the Spotted Towhee was found in 5 of them, the probability of presence of the Spotted Towhee in week 12 is 0.25. To properly present the pattern of presence across the year, the relative probability of presence is calculated. This is the probability of presence divided by the maximum probability of presence across all weeks. For example, imagine the probability of presence in week 20 for the Spotted Towhee is 0.05, and that the probability of presence at week 12 (0.25) is the maximum of any week of the year. The relative probability of presence on week 12 is 0.25/0.25 = 1; at week 20 it is 0.05/0.25 = 0.2. The relative probability of presence calculated in the previous step undergoes a statistical conversion so that all possible values fall between 0 and 10, inclusive. This is the probability of presence score. Breeding Season () Yellow bars denote a very liberal estimate of the time-frame inside which the bird breeds across its entire range. If there are no yellow bars shown for a bird, it does not breed in your project area. Survey Effort () Vertical black lines superimposed on probability of presence bars indicate the number of surveys performed for that species in the 10km grid cell(s) your project area overlaps. No Data () A week is marked as having no data if there were no survey events for that week. Survey Timeframe Surveys from only the last 10 years are used in order to ensure delivery of currently relevant information. The exception to this is areas off the Atlantic coast, where bird returns are based on all years of available data, since data in these areas is currently much more sparse. Migratory birds Migratory bird information is not available at this time Migratory Bird FAQs Tell me more about avoidance and minimization measures I can implement to avoid or minimize impacts to migratory birds. Nationwide Avoidance & Minimization Measures for Birds describes measures that can help avoid and minimize impacts to all birds at any location year-round. When birds may be breeding in the area, identifying the locations of any active nests and avoiding their destruction is one of the most effective ways to minimize impacts. To see when birds are most likely to occur and breed in your project area, view the Probability of Presence Summary. Additional measures or permits may be advisable depending on the type of activity you are conducting and the type of infrastructure or bird species present on your project site. What does IPaC use to generate the list of migratory birds that potentially occur in my specified location? The Migratory Bird Treaty Act (MBTA) prohibits the take (including killing, capturing, selling, trading, and transport) of protected migratory bird species without prior authorization by the Department of Interior U.S. Fish and Wildlife Service (FWS). The incidental take of migratory birds is the injury or death of birds that results from, but is not the purpose, of an activity. The FWS interprets the MBTA to prohibit incidental take. 1. The Migratory Birds Treaty Act of 1918. 2. The Bald and Golden Eagle Protection Act of 1940. Additional information can be found using the following links: Eagle Management https://www.fws.gov/program/eagle-management Measures for avoiding and minimizing impacts to birds https://www.fws.gov/library/collections/avoiding-and-minimizing-incidental-take-migratory-birds Nationwide avoidance and minimization measures for birds Supplemental Information for Migratory Birds and Eagles in IPaC https://www.fws.gov/media/supplemental-information-migratory-birds-and-bald-and-golden- eagles-may-occur-project-action 1 The Migratory Bird Resource List is comprised of Birds of Conservation Concern (BCC) and other species that may warrant special attention in your project location, such as those listed under the Endangered Species Act or the Bald and Golden Eagle Protection Act and those species marked as “Vulnerable”. See the FAQ “What are the levels of concern for migratory birds?” for more information on the levels of concern covered in the IPaC migratory bird species list. The migratory bird list generated for your project is derived from data provided by the Avian Knowledge Network (AKN). The AKN data is based on a growing collection of survey, banding, and citizen science datasets and is queried and filtered to return a list of those birds reported as occurring in the 10km grid cell(s) with which your project intersects. These species have been identified as warranting special attention because they are BCC species in that area, an eagle (Bald and Golden Eagle Protection Act requirements may apply), or a species that has a particular vulnerability to offshore activities or development. Again, the Migratory Bird Resource list includes only a subset of birds that may occur in your project area. It is not representative of all birds that may occur in your project area. To get a list of all birds potentially present in your project area, and to verify survey effort when no results present, please visit the Rapid Avian Information Locator (RAIL) Tool. Why are subspecies showing up on my list? Subspecies profiles are included on the list of species present in your project area because observations in the AKN for the species are being detected. If the species are present, that means that the subspecies may also be present. If a subspecies shows up on your list, you may need to rely on other resources to determine if that subspecies may be present (e.g. your local FWS field office, state surveys, your own surveys). What does IPaC use to generate the probability of presence graphs for the migratory birds potentially occurring in my specified location? The probability of presence graphs associated with your migratory bird list are based on data provided by the Avian Knowledge Network (AKN). This data is derived from a growing collection of survey, banding, and citizen science datasets. Probability of presence data is continuously being updated as new and better information becomes available. To learn more about how the probability of presence graphs are produced and how to interpret them, go to the Probability of Presence Summary and then click on the "Tell me about these graphs" link. How do I know if a bird is breeding, wintering, or migrating in my area? To see what part of a particular bird's range your project area falls within (i.e. breeding, wintering, migrating, or resident), you may query your location using the RAIL Tool and view the range maps provided for birds in your area at the bottom of the profiles provided for each bird in your results. If a bird on your IPaC migratory bird species list has a breeding season associated with it (indicated by yellow vertical bars on the phenology graph in your “IPaC PROBABILITY OF PRESENCE SUMMARY” at the top of your results list), there may be nests present at some point within the timeframe specified. If "Breeds elsewhere" is indicated, then the bird likely does not breed in your project area. What are the levels of concern for migratory birds? Migratory birds delivered through IPaC fall into the following distinct categories of concern: 1. "BCC Rangewide" birds are Birds of Conservation Concern (BCC) that are of concern throughout their range anywhere within the USA (including Hawaii, the Pacific Islands, Puerto Rico, and the Virgin Islands); 2. "BCC - BCR" birds are BCCs that are of concern only in particular Bird Conservation Regions (BCRs) in the continental USA; and 3. "Non-BCC - Vulnerable" birds are not BCC species in your project area, but appear on your list either because of the Bald and Golden Eagle Protection Act requirements (for eagles) or (for non-eagles) potential susceptibilities in offshore areas from certain types of development or activities (e.g. offshore energy development or longline fishing). Although it is important to avoid and minimize impacts to all birds, efforts should be made, in particular, to avoid and minimize impacts to the birds on this list, especially BCC species. For more information on avoidance and minimization measures you can implement to help avoid and minimize migratory bird impacts, please see the FAQ “Tell me more about avoidance and minimization measures I can implement to avoid or minimize impacts to migratory birds”. Details about birds that are potentially affected by offshore projects For additional details about the relative occurrence and abundance of both individual bird species and groups of bird species within your project area off the Atlantic Coast, please visit the Northeast Ocean Data Portal. The Portal also offers data and information about other taxa besides birds that may be helpful to you in your project review. Alternately, you may download the bird model results files underlying the portal maps through the NOAA NCCOS Integrative Statistical Modeling and Predictive Mapping of Marine Bird Distributions and Abundance on the Atlantic Outer Continental Shelf project webpage. Proper interpretation and use of your migratory bird report The migratory bird list generated is not a list of all birds in your project area, only a subset of birds of priority concern. To learn more about how your list is generated and see options for identifying what other birds may be in your project area, please see the FAQ "What does IPaC use to generate the migratory birds potentially occurring in my specified location". Please be aware this report provides the "probability of presence" of birds within the 10 km grid cell(s) that overlap your project; not your exact project footprint. On the graphs provided, please look carefully at the survey effort (indicated by the black vertical line) and for the existence of the "no data" indicator (a red horizontal line). A high survey effort is the key component. If the survey effort is high, then the probability of presence score can be viewed as more dependable. In contrast, a low survey effort bar or no data bar means a lack of data and, therefore, a lack of certainty about presence of the species. This list does not represent all birds present in your project area. It is simply a starting point for identifying what birds of concern have the potential to be in your project area, when they might be there, and if they might be breeding (which means nests might be present). The list and associated information help you know what to look for to confirm presence and helps guide implementation of avoidance and minimization measures to eliminate or reduce potential impacts from your project activities, should presence be confirmed. To learn more about avoidance and minimization measures, visit the FAQ "Tell me about avoidance and minimization measures I can implement to avoid or minimize impacts to migratory birds". Interpreting the Probability of Presence Graphs Each green bar represents the bird's relative probability of presence in the 10km grid cell(s) your project overlaps during a particular week of the year. A taller bar indicates a higher probability of species presence. The survey effort can be used to establish a level of confidence in the presence score. How is the probability of presence score calculated? The calculation is done in three steps: The probability of presence for each week is calculated as the number of survey events in the week where the species was detected divided by the total number of survey events for that week. For example, if in week 12 there were 20 survey events and the Spotted Towhee was found in 5 of them, the probability of presence of the Spotted Towhee in week 12 is 0.25. To properly present the pattern of presence across the year, the relative probability of presence is calculated. This is the probability of presence divided by the maximum probability of presence across all weeks. For example, imagine the probability of presence in week 20 for the Spotted Towhee is 0.05, and that the probability of presence at week 12 (0.25) is the maximum of any week of the year. The relative probability of presence on week 12 is 0.25/0.25 = 1; at week 20 it is 0.05/0.25 = 0.2. The relative probability of presence calculated in the previous step undergoes a statistical conversion so that all possible values fall between 0 and 10, inclusive. This is the probability of presence score. Breeding Season () Yellow bars denote a very liberal estimate of the time-frame inside which the bird breeds across its entire range. If there are no yellow bars shown for a bird, it does not breed in your project area. Survey Effort () Vertical black lines superimposed on probability of presence bars indicate the number of surveys performed for that species in the 10km grid cell(s) your project area overlaps. No Data () A week is marked as having no data if there were no survey events for that week. Survey Timeframe Surveys from only the last 10 years are used in order to ensure delivery of currently relevant information. The exception to this is areas off the Atlantic coast, where bird returns are based on all years of available data, since data in these areas is currently much more sparse. Facilities National Wildlife Refuge lands Any activity proposed on lands managed by the National Wildlife Refuge system must undergo a 'Compatibility Determination' conducted by the Refuge. Please contact the individual Refuges to discuss any questions or concerns. There are no refuge lands at this location. Fish hatcheries There are no sh hatcheries at this location. Wetlands in the National Wetlands Inventory (NWI) Impacts to NWI wetlands and other aquatic habitats may be subject to regulation under Section 404 of the Clean Water Act, or other State/Federal statutes. For more information please contact the Regulatory Program of the local U.S. Army Corps of Engineers District. This location did not intersect any wetlands mapped by NWI. NOTE: This initial screening does not replace an on-site delineation to determine whether wetlands occur. Additional information on the NWI data is provided below. Data limitations The Service's objective of mapping wetlands and deepwater habitats is to produce reconnaissance level information on the location, type and size of these resources. The maps are prepared from the analysis of high altitude imagery. Wetlands are identified based on vegetation, visible hydrology and geography. A margin of error is inherent in the use of imagery; thus, detailed on-the-ground inspection of any particular site may result in revision of the wetland boundaries or classification established through image analysis. The accuracy of image interpretation depends on the quality of the imagery, the experience of the image analysts, the amount and quality of the collateral data and the amount of ground truth verification work conducted. Metadata should be consulted to determine the date of the source imagery used and any mapping problems. Wetlands or other mapped features may have changed since the date of the imagery or field work. There may be occasional differences in polygon boundaries or classifications between the information depicted on the map and the actual conditions on site. Data exclusions Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and nearshore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. Data precautions Federal, state, and local regulatory agencies with jurisdiction over wetlands may define and describe wetlands in a different manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to define the limits of proprietary jurisdiction of any Federal, state, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modifications within or adjacent to wetland areas should seek the advice of appropriate Federal, state, or local agencies concerning specified agency regulatory programs and proprietary jurisdictions that may affect such activities. 04/25/2025 12:20:55 UTC United States Department of the Interior FISH AND WILDLIFE SERVICE New York Ecological Services Field Office 3817 Luker Road Cortland, NY 13045-9385 Phone: (607) 753-9334 Fax: (607) 753-9699 Email Address: fw5es_nyfo@fws.gov https://www.fws.gov/northeast/NYFO/ In Reply Refer To: Project code: 2025-0088321 Project Name: Rise-Finley Street Residential Federal Nexus: no Federal Action Agency (if applicable): Subject: Federal agency coordination under the Endangered Species Act, Section 7 for 'Rise- Finley Street Residential' Dear Kevin Weed: This letter records your determination using the Information for Planning and Consultation (IPaC) system provided to the U.S. Fish and Wildlife Service (Service) on April 25, 2025, for “Rise-Finley Street Residential” (here forward, Project). This project has been assigned Project Code 2025-0088321 and all future correspondence should clearly reference this number. The Service developed the IPaC system and associated species’ determination keys in accordance with the Endangered Species Act of 1973 (ESA; 87 Stat. 884, as amended; 16 U.S.C. 1531 et seq.) and based on a standing analysis. All information submitted by the Project proponent into the IPaC must accurately represent the full scope and details of the Project. Failure to accurately represent or implement the Project as detailed in IPaC or the Northeast Determination Key (DKey), invalidates this letter. Answers to certain questions in the DKey commit the project proponent to implementation of conservation measures that must be followed for the ESA determination to remain valid. To make a no effect determination, the full scope of the proposed project implementation (action) should not have any effects (either positive or negative effect(s)), to a federally listed species or designated critical habitat. Effects of the action are all consequences to listed species or critical habitat that are caused by the proposed action, including the consequences of other activities that are caused by the proposed action. A consequence is caused by the proposed action if it would not occur but for the proposed action and it is reasonably certain to occur. Effects of the action may occur later in time and may include consequences occurring outside the immediate area involved in the action. (See § 402.17). Under Section 7 of the ESA, if a federal action agency Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  2 of 9 ▪ ▪ ▪ makes a no effect determination, no further consultation with, or concurrence from, the Service is required (ESA §7). If a proposed Federal action may affect a listed species or designated critical habitat, formal consultation is required (except when the Service concurs, in writing, that a proposed action "is not likely to adversely affect" listed species or designated critical habitat [50 CFR §402.02, 50 CFR§402.13]). The IPaC results indicated the following species is (are) potentially present in your project area and, based on your responses to the Service’s Northeast DKey, you determined the proposed Project will have the following effect determinations: Species Listing Status Determination Karner Blue Butterfly (Lycaeides melissa samuelis)Endangered No effect Conclusion If there are no updates on listed species, no further consultation/coordination for this project is required for the species identified above. However, the Service recommends that project proponents re-evaluate the Project in IPaC if: 1) the scope, timing, duration, or location of the Project changes (includes any project changes or amendments); 2) new information reveals the Project may impact (positively or negatively) federally listed species or designated critical habitat; or 3) a new species is listed, or critical habitat designated. If any of the above conditions occurs, additional consultation with the Service should take place before project implements any changes which are final or commits additional resources. In addition to the species listed above, the following species and/or critical habitats may also occur in your project area and are not covered by this conclusion: Monarch Butterfly Danaus plexippus Proposed Threatened Northern Long-eared Bat Myotis septentrionalis Endangered Tricolored Bat Perimyotis subflavus Proposed Endangered Please Note: If the Action may impact bald or golden eagles, additional coordination with the Service under the Bald and Golden Eagle Protection Act (BGEPA) (54 Stat. 250, as amended, 16 U.S.C. 668a-d) by the prospective permittee may be required. Please contact the Migratory Birds Permit Office, (413) 253-8643, or PermitsR5MB@fws.gov, with any questions regarding potential impacts to Eagles. If you have any questions regarding this letter or need further assistance, please contact the New York Ecological Services Field Office and reference the Project Code associated with this Project. Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  3 of 9 Action Description You provided to IPaC the following name and description for the subject Action. 1. Name Rise-Finley Street Residential 2. Description The following description was provided for the project 'Rise-Finley Street Residential': Apartment building The approximate location of the project can be viewed in Google Maps: https:// www.google.com/maps/@43.0704651,-73.79106264814271,14z Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  4 of 9 1. 2. 3. 4. 5. 6. 7. QUALIFICATION INTERVIEW As a representative of this project, do you agree that all items submitted represent the complete scope of the project details and you will answer questions truthfully? Yes Does the proposed project include, or is it reasonably certain to cause, intentional take of listed species? Note: This question could refer to research, direct species management, surveys, and/or studies that include intentional handling/encountering, harassment, collection, or capturing of any individual of a federally listed threatened, endangered, or proposed species. No Is the action authorized, permitted, licensed, funded, or being carried out by a Federal agency in whole or in part? No Will the proposed project involve the use of herbicide where listed species are present? No Are there any caves or anthropogenic features suitable for hibernating or roosting bats within the area expected to be impacted by the project? No Does any component of the project associated with this action include activities or structures that may pose a collision risk to birds (e.g., plane-based surveys, land-based or offshore wind turbines, communication towers, high voltage transmission lines, any type of towers with or without guy wires)? Note: For federal actions, answer ‘yes’ if the construction or operation of wind power facilities is either (1) part of the federal action or (2) would not occur but for a federal agency action (federal permit, funding, etc.). No Does any component of the project associated with this action include activities or structures that may pose a collision risk to bats (e.g., plane-based surveys, land-based or offshore wind turbines)? Note: For federal actions, answer ‘yes’ if the construction or operation of wind power facilities is either (1) part of the federal action or (2) would not occur but for a federal agency action (federal permit, funding, etc.). No Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  5 of 9 8. 9. 10. 11. 12. 13. 14. Will the proposed project result in permanent changes to water quantity in a stream or temporary changes that would be sufficient to result in impacts to listed species? For example, will the proposed project include any activities that would alter stream flow, such as water withdrawal, hydropower energy production, impoundments, intake structures, diversion structures, and/or turbines? Projects that include temporary and limited water reductions that will not displace listed species or appreciably change water availability for listed species (e.g. listed species will experience no changes to feeding, breeding or sheltering) can answer "No". Note: This question refers only to the amount of water present in a stream, other water quality factors, including sedimentation and turbidity, will be addressed in following questions. No Will the proposed project affect wetlands where listed species are present? This includes, for example, project activities within wetlands, project activities within 300 feet of wetlands that may have impacts on wetlands, water withdrawals and/or discharge of contaminants (even with a NPDES). No Will the proposed project activities (including upland project activities) occur within 0.125 miles of the water's edge of a stream or tributary of a stream where listed species may be present? No Will the proposed project directly affect a streambed (below ordinary high water mark (OHWM)) of the stream or tributary where listed species may be present? No Will the proposed project bore underneath (directional bore or horizontal directional drill) a stream where listed species may be present? No Will the proposed project involve a new point source discharge into a stream or change an existing point source discharge (e.g., outfalls; leachate ponds) where listed species may be present? No Will the proposed project involve the removal of excess sediment or debris, dredging or in- stream gravel mining where listed species may be present? No Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  6 of 9 15. 16. 17. 18. 19. 20. 21. 22. 23. Will the proposed project involve the creation of a new water-borne contaminant source where listed species may be present? Note New water-borne contaminant sources occur through improper storage, usage, or creation of chemicals. For example: leachate ponds and pits containing chemicals that are not NSF/ANSI 60 compliant have contaminated waterways. Sedimentation will be addressed in a separate question. No Will the proposed project involve perennial stream loss, in a stream of tributary of a stream where listed species may be present, that would require an individual permit under 404 of the Clean Water Act? No Will the proposed project involve blasting where listed species may be present? No Will the proposed project include activities that could negatively affect fish movement temporarily or permanently (including fish stocking, harvesting, or creation of barriers to fish passage). No Will the proposed project involve earth moving that could cause erosion and sedimentation, and/or contamination along a stream or tributary of a stream where listed species may be present? Note: Answer "Yes" to this question if erosion and sediment control measures will be used to protect the stream. No Will the proposed project impact streams or tributaries of streams where listed species may be present through activities such as, but not limited to, valley fills, large-scale vegetation removal, and/or change in site topography? No Will the proposed project involve vegetation removal within 200 feet of a perennial stream bank where aquatic listed species may be present? No Will erosion and sedimentation control Best Management Practices (BMPs) associated with applicable state and/or Federal permits, be applied to the project? If BMPs have been provided by and/or coordinated with and approved by the appropriate Ecological Services Field Office, answer "Yes" to this question. Yes Is the project being funded, lead, or managed in whole or in part by U.S Fish and Wildlife Restoration and Recovery Program (e.g., Partners, Coastal, Fisheries, Wildlife and Sport Fish Restoration, Refuges)? No Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  7 of 9 24. 25. 26. 27. 28. 29. 30. 31. 32. [Semantic] Does the project intersect the Virginia big-eared bat critical habitat? Automatically answered No [Semantic] Does the project intersect the Indiana bat critical habitat? Automatically answered No [Hidden Semantic] Does the project intersect the Karner blue butterfly AOI? Automatically answered Yes Is there potentially suitable habitat for the Karner blue butterfly within the action area or within 220 yards of the action area? Note: Potentially suitable habitat for Karner blue butterfly includes areas where their host plant wild blue lupine grows. Karner blue butterfly adults will also feed on other nectar producing flowers that grow near lupine. Lupine requires well-drained, predominately sandy or other well-drained soils. Lupine can be found in open areas, but can also survive for periods of time in more closed-canopy situations, so areas with a closed-canopy should not be discounted. The following areas generally do not support lupine and are not considered suitable habitat for Karner blue butterfly: • Active row-cropped agricultural lands; • Paved developed areas (buildings, roads, etc.); • Other non-sandy or poorly drained soil areas; • Areas regularly mowed during the growing season (lawns); and • Areas with >50% canopy cover (only if there are no openings, trails, or paths through such areas). Habitat may exist directly adjacent to, or outside the footprint of the above-listed areas, and should be surveyed for lupine, nectar, and the butterflies. No [Semantic] Does the project intersect the candy darter critical habitat? Automatically answered No [Semantic] Does the project intersect the diamond darter critical habitat? Automatically answered No [Semantic] Does the project intersect the Big Sandy crayfish critical habitat? Automatically answered No [Hidden Semantic] Does the project intersect the Guyandotte River crayfish critical habitat? Automatically answered No Do you have any other documents that you want to include with this submission? No Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  8 of 9 1. 2. 3. PROJECT QUESTIONNAIRE Approximately how many acres of trees would the proposed project remove? 3 Approximately how many total acres of disturbance are within the disturbance/ construction limits of the proposed project? 3 Briefly describe the habitat within the construction/disturbance limits of the project site. Mostly wooded with some existing parking areas and building Project code: 2025-0088321 IPaC Record Locator: 548-161344929 04/25/2025 12:20:55 UTC DKey Version Publish Date: 01/03/2025  9 of 9 IPAC USER CONTACT INFORMATION Agency:Private Entity Name:Kevin Weed Address:988 Route 146 City:Clifton Park State:NY Zip:12065 Email kweed@gvglandsurveyors.com Phone:5183830634