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74910-2018_04_20-Full SWPPP No Plan Sheets 894 NYS ROUTE 9 SITE PLAN TOWN OF QUEENSSURY WARREN COUNTY, NEW YORK STORMWATER POLLUTION PREVENTION PLAN April 20, 2018 Prepared For Kaden Enterprises, Inc. 29 Liz Ann Drive Saratoga Springs,NY 12866 Prepared By: F N G I N E E R I N G jqjr 2452 State Route S,Suite SCJ 1 Malta,New York 12020 Page I of 34 Table of Contents 1.0 Executive Summary........................................ 1.1 Responsibilities of the Participants............................................................................................... 4 1.2 Participant Contact Information................................................................................................. 10 2.0 Site Description.............................................................................................................................. 10 2.1 Location...................................................................................................................................... 10 2.2Topography................................................................................................................................. 10 2.3 Soils and Groundwater............................................................................................................... 10 2.4 Land Cover................................................................................................................................. 11 2.5 Wetlands..................................................................................................................................... 11 2.6 Surface Waters............................................................................................................................ 11 2.7 Rainfall Data............................................................................................................................... 11 2.8 Existing Land Use...................................................................................................................... 11 3.0 Project Description......................................................................................................................... 11 4.0 Methodology....................................................................................... .............. 12 ........................... 5.0 NYSDEC Green Infrastructure Five Step Approach...................................................................... 13 5.1 Site Planning............................................................................................................................... 13 5.2 Determine the Water Quality Volume and Minimum Reduction Volume................................. 16 5.3 Runoff Reduction by Applying Green Infrastructure Techniques and Standard SNIPS with RRv Capacity...................................................................................................................................... 16 5.4 Standard Stormwater Management Practices to"Treat Water duality Volume not Addressed by Green Infrastructure Techniques................................................................................................ 20 6.0 Hydrologic and Hydraulic Analysis............................................................................................... 20 6.1 Existing Pre-Development Conditions....................................................................................... 20 6.2 Proposed Post-Development Watershed Conditions.................................................................. 21 6.3 Proposed Water Quantity and Quality Controls......................................................................... 21 7.0 Permanent Stormwater Management System Features.................................................................. 23 7.1 Conveyance Piping..................................................................................................................... 23 7.2 Stormwater Management System............................................................................................... 24 8.0 Stormwater Erosion and Sediment Controls .............................................................................. 24 8.1 Erosion and Sediment Controls....................... ................................................................... ...... 24 8.2 Other Pollutant Controls ......................................................................... ............. 25 8.3 Best Management Practices........................................................................................................ 26 9.0 Construction Sequence Scheduling................................................................................................ 28 10.0 Implementing the SWPPP.............................................................................................................. 29 10.1 Employee'Fraining................................................................................................................. 29 10.2 Site Inspections,,,.,....-...... ......-.......-......-.... ......................-...-...... 29 1.0.3 Maintenance ........................................................................................................................... 31 10.4 Progress Reports and Summaries........................................................................................... 31 10.5 Certification............................................................................................................................ 31 10.6 NYSDEC Winter Site Stabili ation/Sitc Inspections for Construction Sites Under SPIES General Permit for Stormwater(GP-0-15-002)...................................................................... 32 11.0 Conclusion......................................................................................... . ............ 34 .......................... ...... fate 2 oF34 APPENDICIES Appendix A: Owner & Contractor Certification Forms Appendix I3: Site Location/Drainage Area/Drainage Pattern Maps Appendix C: Pre-Developinent and Post-Development Run-off Calculations Appendix D: Stormwater Calculations Appendix E: Grading/Drainage/Sediment, Erosion Control Plan, and Landscaping Plan Appendix F: NYSDEC SPDES General Permit GP-0-15-002 Appendix G: Construction Phase Inspection Report (Sample Form) Appendix H: Post Construction Maintenance Inspection Checklist (Sample Form) Operation and Maintenance Procedure Appendix I: MS4 Acceptance Form Appendix J: Notice of Intent(NOI) Appendix K: Notice of Termination (NOT) Appendix L: Deep Ripping and Decompaction, Spill Reporting Page 3 of 34 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 (LPA) and the New York State Department of Environmental Conservation's (NYSDI C) Phase II Stonn 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 NYSDLC's State Pollution Discharge Elimination System (SPDES) General Permit GP-0-15-002, and any local governing agencies having jurisdiction with regard to erosion and sediment control. 'This SWPPP has been prepared in accordance with Storinwater Management Planning techniques and Green Infrastructure Practices required by the New York State Stonnwater 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 storznwater management reduces a site's impact on the aquatic ecosystem through the use of site planning techniques, runoff reduction techniques, and certain standard storznwater 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 storznwater 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. 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 enviroanrents. 'Phis plan describes methods for stonnwater management and runoff management during the construction phase and summarizes responsible storznwater pollution prevention practices that can be phased into everyday activities post construction. 1.1 RES PONS JBILITIES 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 responsibil€ties of all participants: Otvnet Vperator/Perntittee The following is a summary of the Owner's responsibilities: I. 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, traclitional land use control MS4 must first develop a SWPPP in accordance with all applicable requirements of this permit and then submit a completed NOI form to the address below in order to be authorized to discharge under this permit. The NOT form shall be one which is associated with this permit, sighed in accordance with Part VII.H. of GI'-0-15-002. Page 4 of 34 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 NOT 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 submit that form along with the NOT to the address referenced under "Notice of Intent (NOT) Submittal". 4. Read and understand the Notice of Intent (NOI) and the SWPPP to make sure they are in accordance with the requirements of the General Permit. Certify the NOT and the SWPPP by signing the Owner/Operator Certification statement contained in the NOT. 5. The owner shall have the SWPPP preparer sign the "SWPPP Preparer Certification" contained in the NOT. The NOT should then be submitted to: NYSDBC "Notice of Intent" Bureau of Water Permits 625 Broadway Albany, New York 12233-3505 6. As of the date the NOI is submitted to the Department, the owner or operator shall make the NOI and SWPPP available for review and copying in accordance with the requirements in Part VILP. of this permit. 7. 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 NYSDIC. 8. 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 tie SWPPP and be on site when soil disturbing activities are occurring. 9. Maintain a copy of the General Permit ((3P-0-15-002), NOT, NOl 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. 10. Obtain the services of a qualified inspector to conduct regular on-site inspections for general compliance with the SWPPP and the SPDTS General permit at least once every seven (7) calendar days. 11. 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 minimurn 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 Page 5 of 34 fills shall be developed as well as any additional site specific practices needed to protect water quality. 12. For construction activities that are subject to the requirements of a regulated, traditional land arse corrlrol MS4, the oarrrer or operator shall notify the MS4 in writing of any planned anaendmenis or modifications to the past-construction stormwater management practice component of the SWPPP required by Part I1LA. 4. and 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 storniwater management, practice. 13. Upon project completion and when the site has reached final stabilization, the Owner shall have the qualified inspector perform a final site assessment. If the project has been properly stabilized and has met all requirements, the qualified inspector shall sign the "Qualified Inspector Certification" of the NOT. The owner shall certify the NOT by signing the certification contained in the NOT. The NOT should then be submitted to: NYSDIIC "Notice of Termination" Bureau of Water Permits 625 Broadway Albany, New York 12233-3505 14. 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 NOT for a minimum of five(5) years from the date the site reached final stabilization. 15. It is the responsibility of the owner 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 storinwater 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 OPRI.IP or other governmental agency to mitigate those effects, or local land use approvals evidencing the same. 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-I5-002). The Notice of Intent (NOT) 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. Page 6 of 34 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 notify the new owner or operator, in writing, of the requirement to obtain permit coverage by subthhitting a NOI with the Departn-ient. Once the new owner or operator obtains permit coverage, the original orsmer or operator shall then submit a completed NOT with the name and perinit identification number of the new owner or operator to [lie Department at the address in Part II.A.I.. 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 Department receives a complete NOI, provided the original owner or' operator was not subject to a sixty (60) business day authorization period that has not expired as of the date the Department receives the NOI from the new oia�ner or operator. Owner's Enkineer 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-0-15-002) and the "New .York Standards and Sl)ecifications 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: I. 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 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 oi)erator 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 Page 7 of 34 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 llms'Ector 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 Ts: 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 Prgfessional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or other Department endorsed indii�idual(s). It can also mean someone working under the direct supervision of, and tit the same company as, the licensed Prgfessional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erasion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct super Alsion gf the licensed Professional Engineer or Registered Landscape Architect has receii,ed form• (4) hours of Department endorsed training in proper erosion and seeliment control principles.frorn a Soil and Water Consenation District, or other Department endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Prgfessional Engineer or Registered Landscape Architect shall receive four•(4)hours of training ever-y 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 atthe 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: 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; Description of the condition of all natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site; • Identification of all erosion and sediment control practices that need repair- or maintenance; Page 8 of 34 • 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 and areas which have been stabilized; • Current phase of construction of all post-construction storrnwater management practices and identification of all construction 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; • Digital photographs, with date stamp, that clearly show the condition of all practices that have been identified as needing corrective actions. The qualr fled 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 qualified insl)ector 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 properly 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 net all requirements of the SWPPP and the General Permit. When the site has undergone final stabilization, prepare the NOT and sign the "Final Stabilization" and "Post-Construction Stormwater Management Practice" certification statement. The NOT must then be mailed to the Owner to sign and subniit to the NYSDFC. For construction activities that are subject to the requirements of a regulated, traditional land use eonfrvl MS4, the owner or operator shall also have the MS4 sign the "MS4 Acceptance" statement on the NOT. 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 NOT 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 qualifted inspector's final site inspection cell ification(s). 11'agc 9 of 34 1.2 PARTICIPANT CONTACT INFORMATION OavncrlOperator': Liiginccring'l irm Contractor's &`Sub Contractors Kaden Enterprises, Inc. Lansing Engineering, P.C. 29 Liz Ann Drive 2452 State Route 9, Suite 301 'TBI) Saratoga Springs, NY 12866 Malta, New York 12020 (518) 899-5243 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 ininimize effects on areas adjacent to the site. 2.1 LOCATION The proposed project is located on the corner of NYS Route 9 and Montray Road on the east side of NYS Route 9 in the"Town of Queensbury, Warren County,New York. 2.2 TOPOGRAPHY Based on topographic survey information, the site generally slopes from the north and west to the south and cast towards a roadside ditch along Montray Road. 2.3 SOILS AND GROUNDWATER According to maps from the Natural Resources Conservation Service(NRCS) of Warren County, the onsite soils are classified as follows: • Hinckley Cobhty Sandy Loam, I-MB, - (3 to S percent slopes): 'Phis is a gently sloping, deep, excessively drained soil on terraces and benches in valleys and on undulating planes. `rhe soil has a high content of sand, gravel, and cobblestones. The permeability is rapid through the suz-face layer and subsoil and very rapid in the substratum. Surface runoff is generally slow or medium. (IIydroIogic Soil Group A) • Oakville Lowey Fine Sand, OaB, - (_3 to 8hercent slopes): ]'his is a gently sloping, deep, well drained soil on outwash plains. Permeability is rapid throughout. Surface runoff is slow. (Hydrologic Soil Group A) • Oakville Loamy 1,7ne Sand, OaC, - (8 to 15 percent slopes): 'This is a sloping, deep, well chained soil on dissected side slopes and knolls on outwash plains. Permeability is very rapid. Surface runoff is slow or medium. (Hydrologic Soil Group A) Deep hole test pits and percolation tests will be perfon-ned before the start of construction. Page 10 of'34 2.4 LAND COVER The existing cover consists of an existing two story wood frame structure with associated impervious parking areas and driveway along with smaller- grassed areas and a large wooded area towards the east of the project site.The surrounding land uses are commercial. 2.5 WETLANDS '11e parcel does not contain any ACOI or NYSDEC regulated wetlands. 2.6 SURFACE WATERS There are no surface waters located on the property. 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. 244 our Storm Event � 24-Dour rainfall 1 year 2.19 10 year 3.62 25 year 4.42 50 year 5.15 - 100 year 5.99 Data for the 90%average annual stormwater runoff volume(P) was obtained from Figure 4.1 of the"New York State Stor'rawater Management Design Manual"and is equal to one inch(1.20"). 2.8 EXISTING LAND USE The land within the project area is currently developed containing a two-story wood frame building with an associated impervious parking area and driveway along with a larger wooded arca along; the eastern portioa of the project site and small grassed areas along the west of the project site. 3.0 PROJECT DESCRIPTION The proposed project includes the demolition of the existing two-story building; and gravel parking areas and the development of a 11,400 sf building containing 2,500 sf of restaurant space with 50 seats, and 8,900 sf of retail space. The anticipated impermeable surfaces will include paved parking stalls and drive isles, sidewalks, and the structure rooftop. The project will connect to an existing parking lot to limit curb cuts along New York State Route 9. Storrnwater from the impermeable surfaces will be directed towards green infrastructure practices including a subsurface infiltration basin. The project design will ensure that the soils and groundwater table will be protected. Storrnwater management areas will be constructed to treat and control stormwater runoff. The systems Page 11 of 34 have been sized to ensure that the adequate storage exists to property treat and store runoff associated with the 1, 10, 25, 50, and 100-year design storm events. 4,0 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 through the use of site planning techniques, runoff reduction techniques, and certain standard stormwater management practices. According to the New York State Storinwater Design Manual, the terin 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 inanagement and erosion and sedirnentation control structures for this project is summarized as follows: The Six Step Process for Storrnwater 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 volurne for the site. 3.0 Incorporation of green infrastructure techniques and standard stor-rnwater 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. The runoff reduction attained through the various practices implemented on site shall not be less the minirnurn RRv. 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 volute 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. 62 Determine peak flows from each watershed, for various storm events, using the Autodesk Page 12 of 34 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 arca 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", January 2015, 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. 5.0 NVSDEC GREEN INFRASTRUCTURE FIVE STEP APPROAC14 5.1 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 flan. 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. 'Fhe following planning practices to protect natural features have been considered and where possible, applied to the proposed development. Preservation of Undislurbed Areas: Preservation of undisturbed areas is not applicable due to the scale of the project and the limited significant resources. Clearing shall be kept to a minimum as indicated in the Reduction of'Clearing and Grading section below. Preser-wition of I3z�ffers: Preservation of buffers will not be applied to this project due to the special requirements for buffers. Page 13 of 34 Reduction qf' Clearing and Grading- Clearing shall be limited to only what is necessary four the construction of the building, roads 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 Develolmient in Less Sensitive Areas: Sensitive resource areas on the parcel are limited to mature forest areas. No critical habitats have been identified ora the site. Careful attention has been made to design the project to disturb the least amount of sensitive natural resources as possible. Clearing will be limited to the areas only needed to construct the project. These planning techniques strive to create the least impact to sensitive natural resources and aid in preserving the natural hydrology of the site. Open SI)ace Design: Clustering, conservation design or open space design is not applicable due to the type of this project. However, by implementing other planning techniques to preserve natural features, several of the benefits of this approach have already been achieved. These include reducing overall limits of disturbance to preserve forested land. 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 Storrnwater 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 groundeover 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 DisturbanceRestoration not permitted Preservation of natural features —.___ -- .......... Minimal soil disturbance Restoration not required-- — - Clearing and Grubbing_....._......--------- Areas where topsoil is IJSG A&13*** ISG C&D Protect area from ally ongoing stripped only—no change in Apply 6 inches of Aerate*and apply construction activities grade topsoil 6" of topsoil Areas of cut Or fill _--� IISG A&13 _HSG C&D --� Aerate*and apply Apply full soil _ 6" of topsoil restoration** Heavy traffic areas on site Apply Full Soil Restoration (especially in a zone 5-25 (decompact.ion and compost feet around buildings but not enhancement) within a 5 foot perimeter around foundation walls. _ Areas where Runoff Restoration not required, but may be Keep construction equipment Reduction and/or infiltration applied to enhance the reduction from crossing these areas. To practices are applied specified for appropriate practices protect newly installed practice from any ongoing construction activities construct a single phase operation fence area Redevelopment projects Soil restoration is required ora Page 14 of 34 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 L *** This project is situated on A 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 ill the soil, filtering; out water pollutants, reducing storrnwater 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: The project does not include the construction of roadway. Sidewalk Reduction: Sidewalks for this project have been reduced to the minimum extent possible allowed by the American with Disabilities Act and the'Town of Queensbury. Driveway Redaction: Driveways for this project:have been reduced to the minimum allowed by the NYS Fire Code and safe vehicle operation. Building Reduction: This practice of reducing the building footprint was utilized to reduce the area of the buildings to the maxirnuan extent possible while still making 1:110 project feasible. Parking Reduction: This planning practice was not applicable as the Town of Queensbury Code dictates the required size and number of parking stalls for restaurant and retail space. 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. Impervious areas are limited to building and access roads. All reasonable opportunities for preserving natural 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. Page 1.5 of 34 5.2 DETERMINE THE WATER QUALITY VOLUME AND MINIMUM REDUCTION VOLUME The total developed area is approximately 1.69-acres of which, 0.81 acres will be impervious development. Following a review of existing topography and site conditions, one drainage area and one distinct design point has been defined for the subject site and the stormwater management analysis. A detailed description of these design points can be found in section 6,1 & 6.2 of this report. The water quality volume (WQv) and Minimum Reduction Volume for the design point has been calculated as follows: Water Quality Volume: WQv=PxRvxA 12 Rv= 0.05 +0.009(1); 1=percent impervious P (inch)= 90% Rainfall ];vent A= Site Area WQv= 1.20 x0.48x 1.69=0.081 ac-ft 12 The Water Quality Volume for the project is 0.081 ac-ft or 3,544 of of storinwater. Minimum RRv required: RRv—(P x Rv x S x A(Total New Impervious Area) )/12 Where: P= 90% rainfall event(inches) Rv= 0.05.1-0.09(1) where I is 100% impervious S =0.55 (weighted average of all soils) A : 1.02 acres Minimum RRv required —(1.20 x .95x 0.55 x 0.81) =0.042 ac-ft 12 Minimum RRv required m::0,042 acre-feet 5.3 RUNOFF REDUCTION BY APPLYING GREEN INFRASTRUCTURE 'TECHNIQUES AND STANDARD SNIPS WITH RRV CAPACITY The Runoff Reduction Volume (RRv) results in a reduction of the total WQv through implementation of greeninfrastructure techniques. Runoff reduction shall be achieved by infiltration, groundwater recharge, reuse, recycle, evaporation/transpiration of 100 percent of the post developimnt 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 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 Page 16 of 34 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 othcr existing technical limitations are objectively documented. The following chart (from the NYSDEC design manual) outlines the green infrastructure techniques that are acceptable for runoff reduction that must be evaluated for feasibility for the project. Green Infrastructum Techniques Acceptable for-:Runoff Reduction' Group Practice Description Conservation of Retain the pre-development hydrologic and water quality natural areas characteri sties of undisturbed natural areas, stream and wetland buffers by restoring and/or permanently conserving these areas on a site. Sheetflow to Undisturbed natural areas such as forested conservation areas and riparian buffers or stream buffers or vegetated filter strips and riparian buffers can be filter strips used to treat and control stormwater runoff from some areas of a development project. Vegetated open The natural drainage paths, or properly designed vegetated channels, swale 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 Plant or conserve trees to reduce stor€nwater runoff, increase nutrient box uptake, and provide bank stabilization. 'frees can be used for applications such as landscaping, stormwater management practice Runoff areas, conservation areas and erosion and sediment control._ Reduction Disconnection of Direct runoff from residential rooftop areas and upland overland Techniques rooftop runoff runoff flow to designated pervious areas to reduce runoff volumes and rates. Stream Stream daylightpreviously culverted/piped streams to restore daylighting for natural habitats, better attenuate runoff by increasing the;storage size, redevelopment promoting infiltration, and help reduce pollutant loads. projects Rain Garden .Manage and treat small volumes of stornnvater 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 disclnare rate of runoff entering conveyance systenn. _ Stornnwater Small landscaped stormwater treatnnent devices that can be designed planter as infiltration or filtering practices. Stornnwater planters use soil infiltration and biogeochemical processes to decrease stormwater quantity and improve water quality Rain tank/Cistern Capture and store stornnwater 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 thmu 7h the Page 17 of 34 surface, thereby reducing stormwater runoff from a site and providing some pollutant uptake in the underlying soils. Runoff Reduction Technique Evaluation The runoff reduction techniques offered in the NYSDEC Storniwater 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: This practice has not been included in this project due to the scope of the proposed project. Sheet blow to Riparian I3arffers or Eilter 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. 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 not been included in the green infrastructure calculations as other green 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 storinwater runoff through rainfall interception and evapotranspiration. Other benefits include providing wildlife habitat, promoting shade, creating natural buffers, increasing; nutrient uptake, and aiding; infiltration. Existing; mature trees along the eastern portion of the project site will be conserved. 'These trees will be protected during; and after construction. Approximately 0.69 acres of non-impervious development will be directed to the existing;trees. Disconnection of'Ronftop 12trrtof' Disconnection of Rooftop Runoff will not be proposed for this project as rooftop runoff will be treated by other greet) infrastructure and traditional stormwater management techniques. 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 clue to safety concerns for the future Page 18 of 34 owners 1 tenants. Also extreme weather and potential heavy snow loads during winter months make this practice undesirable. Storinwater Planters: According to the New York State Stor►nwater Design Manual, stormwater planters, much like rain gardens, use soil infiltration and biogeochemical processes to decrease stormwater quantity and improve stormwater quality. Storniwater planters are not feasible for the project due to the number of planters that would be required to treat the roofs of the proposed commercial buildings. Rain Barrels and Cisterns: Rain barrels and cisterns are not feasible for the project due to the number and size of the cisterns that would be required to treat the proposed building's roof. Porous Pavement: According to the Now 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 infiltration techniques will be utilized. Bio-retention infiltration: According to the New York State Storinwater 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 as other green infrastructure practices are being;utilized. 'rhe required WQv that shall be treated for the project is calculated in Section 5.2 and is approximately 0.081 ac-ft or 3,544 of of stormwater for the project. The required minimum runoff reduction requirements have been calculated in Section 5.2 and is approximately 0.042 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= 0.081 ae-ft The minimum required RRv= 0.042 ae-ft Arca Reduction Practices Conservation of natural areas= 0.00 ae Riparian buffers/filter strips 0.00 ae Tree Planting/free preservation= 0.69 ae Total Arca Reduction— 0.00 ac Runoff Reduction volume= 0.0003 ac-ft Rooftop Disconnection Runoff Reduction volume= 0.00 ac-ft Volume Reduction Practices Porous Pavement— 0.00 ac Runoff Reduction volume= 0.00 ac-ft Source Control 'Treatment Practices Stcrtulcrscll'racticc�.� __.. Page 19 of 34 Infiltration 1.0 ac-ft Green InfJ astruelure Practices Vegetated Swales NIA Green Roof NIA Rain Gardcn NIA Storrnwater Planters NIA Cisterns/Rain Barrels NIA Bioretention Infiltration NIA InfiltrationTrenches N/A Total Runoff Reduction Volume 0.081 ac-ft Total WQv Treated and Reduced 0.081 ac-ft Total WQv to be Treated by Standard Practices 0.000 ac-ft The total runoff reduction volume of 0.081 ac-ft. is equal to the water quality volume of 0.081 ac-ft Approximately 100% of the water quality volume is treated by the runoff reduction volume. 5.4 STANDARD STORMWATER MANAGEMENT PRACTICES TO TREAT WATER QUALI'T'Y VOLUME NOT ADDRESSED BY GREEN INFRASTRUC"T'URE TECHNIQUES All of 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. 6.0 HYDROLOGIC AND HYDRAULIC ANALYSIS The amount of stormwater runoff generated from the subject parcels after development is completed should not be greater than (lie stormwater runoff generated prior to development. To ensure the pre- development stormwater discharge is less than or equal to post-development stormwater discharge, the I- year, 10-year, 25-year, 50-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-developmentand 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, I lydroCAD, 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. 6.1 EXISTING PRE-DEVELOPMENT CONDITIONS Ira addition to the project area of 1.69 acres, 0.26 acres of offsite contributing area has been included in the subcatchrnent areas for analysis purposes for a total analysis area of 1.95 acres. Under existing conditions, Design Point 1 is located at the southeast corner of the project site. The drainage area to Design Point. I encompasses approximately 1.84 acres (Subcatchmcnt 1). Stornawater originating from this subcatchrnent generally flows overland from the northwest toward the southeast and ultimately to Design Point 1. Existing cover type in this drainage area is woods, grassed, existing impervious areas including: existing onsite building and parking, and offsite impervious areas. Page 20 of 34 Under existing conditions, Design Point 2 is located at the two existing drywells located just north of the project site within the existing parking area. The drainage area to Design Point 2 encompasses approximately 0.11 acres(Subcatchment 2). Stormwater originating from this subcatchment generally flows overland from the northwest toward the southeast and ultimately to one of the two adjacent drywclls where it infiltrates at Design Point 2. Existing cover type in this drainage area is existing impervious area. 6.2 PROPOSED POST-DEVELOPMENT WATERSHED CONDITIONS Under proposed conditions, the infiltration areas remain in the same general locations. Due to proposed grading, the site has been divided into multiple subcatchments to most accurately depict the developed condition. The post-development storrnwater analysis includes the identified subcatchments. Subcatchment I A encompasses approximately 1.13-acres and includes grassed, impervious, and offsite impervious areas contributing to the Subsurface Infiltration System. Stormwater originating from subcatchinent IA will flow overland to a closed stormwater system and ultimately the Subsurface Infiltration System where it will infiltrate. An outlet control structure will allow for partial discharge of storm events greater than the 25-year storm event to Design Point 1. Subcatchment IB encompasses approximately 0.71-acres and includes grassed, wooded. and offsite existing impervious areas of the proposed project not treated by the subsurface infiltration system.. Stormwater originating from Subcatchment 113 will be conveyed overland from the west to the southeast and ultimately discharge to Design Point 1. Subcatchment 2B encompasses approximately 0.11-acres and includes existing impervious areas not treated by the subsurface infiltration system. Stormwater originating from subeatchrnent 213 will continue to be conveyed overland from the northwest toward the southeast and ultimately infiltrate at Design Point 2. The pre-development and post-development peak discharge rates at Design Points 1 and 2 for the 1, 10, 25, 50 and 100-year storms pliqE to mitigation are as follows: 1-YR 10-YR 25-YR 50-YR 100-YR - - _ _.._.-.------_-- . - _.. ....- .___-- — _-._.- ___._._. ...... PRE-DEVELOPMENT cfs cfs cfs ds cfs DESIGN POINT 1 0.00 0.17 0.72 1.50 2.57 DESIGN POINT 2 0.33 0.55 0.67 0.78 0.91 POST-.DEVELOPMENT cfs cfs cfs cfs cfs _......._._..R._...-__..__....__...—_._._._........_............__._..._...-....._._----..._._...._--_-------------------------------------------------------------..........-......:._:.__: DESIGN POINT 1 2.18 4.51 5.84 7.05 8.47 DESIGN POINT 2 — -0.33 1 0.78 0.91. These post development volume and discharge values represent the post development condition without any designed st.orrnwater management in relation to existing conditions. The post-development stormwater discharge must be mitigated. 6.3 PROPOSED WATER QUANTITY AND QUALITY CONTROLS The proposed stormwater management system for the this site has been designed with provisions to store and infiltrate the water quality volume, channel protection volume, overbank flood protection volume and extreme storm flood protection volurne for the developed portions of the project parcel. The proposed stormwat.er- management systern has been included with the proposed development considering various Page 21 of 34 site constraints and the"Town of Queensbury regulations. Subsurface Infiltration System #1 Subsurface Infiltration System 41 is located in the north western portion of the developed site. The infiltration system has been designed with an invert or bottorn of stone elevation of 451.00' which will provide 3' of separation between the bottom of the stone and groundwater while still allowing the bottom of the practice to remain in native material. Additional on-site deep hole test will need to be performed at the time of construction to verify the 3ft of separation. This system collects and treats the storrnwater from approximately 1.00-acres of the developed portions of the site. The infiltration rate has been conservatively modeled as 10 inin/in. to account for potential future sedimentation inside the infiltration basin. The water quality volume (WQv) is designed to improve water duality by sizing to capture and treat 90% of the average annual storinwater runoff volume. The water quality volume is directly related to the amount of impervious cover created at a site. The water duality volume is 0.086ae-ft for Subsurface Infiltration System #1 and will be pre-treated by a Lane Enterprises Sediment Strip before entering subsurface Infiltration System #1. The Lane Enterprises Sediment Strip is an approved pretreatment device approved by New Jersey Corporation of Advanced Technology (NJCAT). Sizing calculations for the Sediment Strip can be found in appendix D of this report. A bypass has been included in the system to direct storms greater than the 2-year storm event directly into the subsurface infiltration system. This bypass provides greater treatment than the required 90% storm event. The entire WQv will be stored and infiltrated by the system. 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 subsurface infiltration system. The entire stream channel protection volume will be stored and infiltrated by the subsurface infiltration system. 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 0.11 ac-ft. for the subsurface infiltration systema. The entire overbank flood control volume will be stored and infiltrated by the subsurface infiltration system. 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 1.00-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 0.22 ac-ft for the subsurface infiltration system. The entire extreme flood volume will be stored and infiltrated by the subsurface infiltration system. A 6" low flow orifice will slowly discharge storm events greater than the 25-year storm event. Additionally, emergency overflow has been provided in the forrm of an overflow pipe that will discharge storms in excess of the 100 year storrm event to the existing depression located at Design Point 1. A detail of the outlet control structure can be found on the plans. A rating table (stage/stor-age/discharge) was then developed for the proposed infiltration basin based on the basin's contours and infiltration rate and the characteristics of the water quality volume, channel protection volume, overbank flood protection volume and extreme storm flood protection volume for each drainage area. Page 22 of 34 Subsurface Infiltration System: Peak Inflows Structure Peak Discharge High Water Elevation freeboard Q, =2.18 cfs Q1 =0.00 cfs 452.01' 4.24' Qjo=4.51 cfs Qio= 0.00cfs 453.65' 2.60' Q25 =5.84 cfs Q,o-0.00cfs 454.71' 1.54' Q50= 7.05 cfs Q,o=0.29cfs 455.34' 0.9I, Qioo= 8.44 cfs Q,00=0.77 cfs 455.91' 0.34' -Bottom of Stone = 451.00'; Bottom of Chamber 451.75'; Top of Chamber = 455.54'; Top of Stone 456.54'; Pavement = 461.13'; Lowest Structure Rim Elevation = 456.25'; 6" Orifice- 455.00'; Emergency Overflow Elevation=45591' The proposed stormwater flows will not adversely affect the downstream receiving; waters as all storm events up to and including the 100 year storm are less than or equal to predevelopment conditions. A comparison of pre-and post-development discharge after installation of mitigation is shown below: _ 1-YR 10-YR 25-YR 50-YR 100-YR PRE-DEVELOPMENT. cfs cfs cfs cfs efs DESIGN POINT 1 0.00 0.17 0.72 1.50 2.57 DESIGN POINT 2 0.33 0.55 0.67 0.78 0.91 POST-DEVELOPMENT cfs cfs cfs cfs cfs DESIGN POINT 1 0.00 0.00 0.010.32 0.93 DESIGN POINT 2 0.33 0.55 0.67 0.78 0.91 Post development peak stormwater discharge is less than or equal to pre-development peak stormwater discharge for all storm events analyzed and all impervious areas have been treated. 7.0 PERMANENT STORMWATER MANAGEMENT SYSTEM FEATURES `]'his section describes the permanent features of the Stormwater Management System for proposed development, including- storm sewer piping and storinwater 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. 7.1 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 Brom the 10-year 24-hour design storm; Page 23 of 34 • 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 arc greater than three feet per second, and • Strength is sufficient to withstand the soil cover and vehicle loads. 7.2 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. • 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 (I00-year storm). 8.0 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 storrll wafer, 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. 8.1 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 Page 24 of 34 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, geosyntlietic drainage netting, hay or any other stabilization measure shall be used that will significantly reduce the risk of erosion. Stabilization measures should be initiated as soon as practical in portions of the site where construction activities have temporarily or permanently ceased, but in no case more than 14 days. Where activities will resume within 21 days in that portion of the site, measures need not be initiated. Permanent Stabilizatim 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 Town of Queensbury. All lawns, basins and swales will be permanently seeded and mulched and maintained as necessary to prevent over growth. 8.2 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 storinwater runoff due to construction activities. Solvents and detergents may he 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 NYCR.R 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. Tue1s 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 NYCR.R 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 rmay 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 Page 25 of 34 in their original containers within temporary structures and shall not be exposed to stormwater. Used oil and petrolcurn products shall be stored in approved containers until recycled or disposed of at an approved disposal facility. Tetnporary Facilities Temporary sanitary facilities may be located on site for construction workers. This facility shall be located 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 NYSDI'C. 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 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, 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 comes in contact with 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 storrnwater to the stormwater management basins. All stormwater 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. 8.3 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. Page 26 of 34 Gond HousekeEein�,r Good housekeeping is essential to reducing the risk of contaminating runoff waters during every stage of construction. 'rhe 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 Storinwater 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 hard tools must be placed within a trailer or under cover at the end of each work day. A storage area shall be designated on-site where all hazardous or toxic materials are stored. Each employee shall return the inaterials 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 vehicic will be moved under cover. Drip pans shall be used when performing any maintenance or cleaning on construction vehicles. Sill Prevention and RBSrJonse 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 "Minimun- Standards for New and Substantially Modified Above Ground Storage Facilities", all tanks installed must rneet or exceed the design criteria in one or more of the following design or manufacturing standards: UL No. 142, UL No. 58, APT Standard No. 650, API Standard No. 620, CAN4-S601-M.84 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 Page 27 of 34 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 on-call at all times 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 plops 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 I-Iazardous 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 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. 9.0 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 sediments in runoff water and ultimately preserve the duality 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: I're-Construction Activid'es • 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. Dtcrir� G�rastructic�rt 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. Page 28 of 34 • 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 NYSDIC. • 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 of the contributing drainage area has been completely stabilized. Past-Construction Activities • Identify the permanent structural or non-structural practices that will remain on the site. • 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. 10.0 IMPLEMENTING THE SWPPP 10.1 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 have the ability to 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. 10.2 SITE INSPECTIONS The Owner must have a qualified professional conduct an assessment of the site prior to the commencement of construction and certify in an inspection report that the appropriate erosion and sediment controls described in 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 arc 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 shall include and/or address the following: • The date and time of the inspection; • Name and title of person(s) performing inspection; Page 29 of 34 • 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 lrom the construction site; • Description of the condition of all natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site; • 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 and areas which have been stabilized; • Current phase of construction of all post-construction stornlwater management practices and identification of all construction 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 stornlwater management practices; • Digital photographs, with date stamp, that clearly show the condition of all practices that have been identified as needing corrective actions. The qualified insj)ector 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 qualified inspector shall also take digital photographs, with date stamp, that clearly show the condition of the practice(s) aper 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 clays of that inspection. At a minimum, the gualrf ed inspector shall inspect all erosion and sediment control practices to ensure integrity and effectiveness, all past-construction stornlwater managenient practices under construction to ensure that they are constructed in coniormance with the SWPPP, all areas of disturbance that have not achieved final stabilization, all points of discharge to natural surface waterbodies Iocated 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. Page:30 of 34 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. 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 storinwater 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. 10.3 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 SO percent of their design capacity. Guidelines and recommendations for installation and maintenance practices can be found in the "New York Standards and Specifications Erosion and Sediment Control" handbook. 110.4 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 weep, 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 log book. Additionally, as described in Section 1.1 of this report, the Owner's Engineer will prepare weekly inspection reports. These reports should be maintained in the on-site log book as well. 10.5 CERTIFICATION Page 31 of 34 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 NYSIXIV 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 and inspection quarterly summaries 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. 10.6 NYSDEC WINTER SITE STABILIZATION/SITE INSPECTIONS FOR CONSTRUCTION SITES UNDER SPDES GENERAL PERMIT FOR STORMWATER (GP-0-15-002) The following temporary stabilization measures shall be performed when construction is occurring during winter/frozen ground conditions. The following;requirements do not supersede any other requirements of this SWPPP as they apply to non-frozen ground conditions. ■ Perimeter erosion control shall still be installed prior to earthwork disturbance as per this SWPPP. ■ Any areas that cannot be seeded to turf by October 1 or earlier will receive a temporary seeding, The temporary seeding; will consist of winter rye seeded at the rate of 120 pounds per acre (2.5 pounds per 1,000 square feet) or stabilized as per the temporary stabilization for winter construction/frozen conditions. ■ Any area of disturbance that will remain inactive for a period of 14 consecutive days shall be mulched. This includes any previously disturbed areas that are covered with snow. ■ Mulch shall consist of loose straw applied at the rate of 2 to 3 bales (90 to 100 pounds) per thousand square feet. • Mulch should be applied uniformly over the area of bare soil or bare soil that is covered with snow. For the latter condition, mulch must be applied on top of snow. • Using a tracked vehicle, mulch should be crimped into the bare soil/snow. The tracked vehicle should be driven across the mulched areas in at least two directions to maximize crimping of mulch into the soil/snow. ■ If mulch gets blown off an area to a significant degree, the site inspector should require that an area be re-mulched in accordance with Items 2 through 5 above, and this area will be included on the inspection checklist for the next inspection. ■ If a particular area repeatedly experiences loss of mulch dire to wind, then the inspector should require that an alternative method be used to secure the mulch in place. Such Page 32 of 34 alternatives may include the use of netting, tackifier or other methods deemed appropriate by the inspector. ■ During periods when snow is melting and/or surface soils are thawing during daytime hours, mulched areas shall be re-tracked (crimped) as per Item 5 above at least once every seven days, more frequently if directed by the inspector. Additional mulch may be required to obtain complete coverage of an area. Biodegradable erosion control matting may be required on steeper slopes. ■ Additional stabilization measures for non-frozen ground conditions described in this SWPPP shall be implemented at the time deemed appropriate by the inspector_ During the winter season, if a site has been stabilized and soil disturbing activities have been suspended for the winter, weekly inspections can be 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. All erosion and sediment controls must be installed and maintained according to the NYS Standards and Specifications for Erosion and Sediment Control (aka Blue Book). The main items to consider are: 1. Site Stabilization - All bare/exposed soils must be stabilized by an established vegetation, straw or mulch, matting, rock or other approved product such as rolled erosion control product. Seeding of areas along with mulching is encouraged, However seeding alone is not considered acceptable for proper stabilization. 2. Sediment Barriers - I3arriers must be properly installed at all necessary perimeter and sensitive locations, 3. Slopes -All slopes and grades must be properly stabilized with approved methods. Rolled erosion control products must be used on all slopes greater than 311, or where conditions for erosion dictate such measures. 4. Soil Stockpiles - Stockpiled soils must be protected by the use of established vegetation, an anchored-down straw or mulch, rolled erosion control product or other durable covering, A barrier must be installed around the pile to prevent erosion away from that location. 5. Construction Entrance - All entrance/exit locations to the site must be properly stabilized and must be maintained to accommodate snow management as set forth in the NYS Standards and Specifications for Erosion and Sediment Control. 6. Snow Management - Snow management must not destroy or degrade erosion and sediment control practices. Frozen ground, winter conditions and equipment can affect erosion and sediment control practices. Check for damage during monthly inspections and repair as necessary. ']'his is especially important during;thaws Page 33 of 34 and prior to spring rain events. Weekly inspections must resume no later than March 15 or as directed by the Department. 11.0 CONCLUSION Lansing Engineering has designed a Stori water Management flan for the 894 NYS Route 9 Site Plan 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 storn7water 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. Page 34 of 34 Appendix A Contractor Certification Forms STORMWATER POLLUTION PREVENTION PLAN CONTRACTOR CERTIFICATION Signatory requirements as per NYSDLC SPDES General P41-mit for Stornrwater Discharges from Coarstructiorr Activities Permit No. CP-0-15-002 Part III.A.G "I hereby certify tlrcrt I understand and ag=ree to comply tvilla the lerms and conditions of the SH'f'PP and agree to implement arty corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operalor mast comply with the lerms and conditions of the utast current version of rhe New York State Pollutant Discharge Elimination System ("SPDF.S') general permit for stormwater discharges from construction activities and that it is unlfn�fl for any person to cause or- conlrihute to a violation of water quedit.y standards. Furthermore, I understand that certifying false, incorrect or•inaccurate informalion is a violation gfrhe referenced permit and the lcrrvs of the State ofNew York and could subject me to criminal, civil and/or administrative proceedings" Prqjcct Name acrd/or Address - ------- -WW Contractor Company Mine Address Phone Number ..�-- email Trained Contractor* "Title Authorized Representative Title. Authorized lZepr-esentativc Signature Date Please identify the specific elements of the SWPPP you will berespousible for: (Use additional sheets if required) *A Trained Contractor as defined in Appendix A of the General Permit is an employee from the contracting (construction) company, identified in 11art lll,A.U., that has received 12xn• (4) hours of Department endorsed €raining in proper crosion and sediment control principles from a Soil and Water Conservation District,or other Dep mtnrent endorsed entity. After-i-eceiving the inid,d training,the trained contractor shall rcccivc fora•(4)hours of training every three(3)years. Appendix B Site Location/Drainage Area/Drainage Pattern Maps SITE LOCATION - � � SITE LOCATION MAP 0 2so Sao 1000 2000 SCALE: 1"=500' PRELIMINARY 1 NOT FOR CONSTRUCTION UNAUTHORIZED ALTERATION OR ADDITION TO THIS DOCUMENT • • • i IS A VIOLATION OF THE NYS EDUCATION LAW., r r r r OWYRIGHT LANSING ENGINEERING, AC. LA N S 1 N C3 SITE LOCATION MAP ENS IN EER I N G PROJ. NO: 749.10 MAI. S LM""""1 24 e S7 C r NY rI �,sura a.i SCALE: AS SHOWN .7A,N '!2(7?O (51 E3)E3 9-5240 DATE: 04/20/1$ SWEET 1 OF 1 Appendix C Pre-Development and Post-Development Run-off Calculations 1 2 DP1 . DPS (Subcai [Reach pn [�in\ Drainage Diagram for Existing Conditions 4-12-18 a Prepared by{enter your company name here} 4/20/2018 HydroCADa 1.00 sln 000927 ©1986-2003 Appked Microcomputer Systems Existing Conditions 4-12-18 Type // 24-17r 1-yr Rainfall=2.99" Prepared by {enter your company name here} Page 2 HydroCAD®7.00 s/n 000927 ® 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Runoff Area=1.840 ac Runoff Depth=0.00" Flow Length=366' Tc=11.5 rein CN=50 Runoff=0.00 cfs 0.000 of Subcatchment 2: Runoff Area=0.110 ac Runoff Depth=1.86" Tc=6.0 min CN=98 Runoff=0.33 cfs 0.017 of Reach DPI: Inflow=0.00 cfs 0.000 of Outflow=0.00 cis 0.000 of Reach DP2: Inflow=0.33 cfs 0.017 of Outflow=0.33 cfs 0,017 of Total Runoff Area= 1.950 ac Runoff Volume =0.017 of Average Runoff Depth = 0.11" Existing Conditions 4-12-18 Type // 24-hr 1-yr Rainfall=2.19" Prepared by (enter your company name here) Page 3 HydroCAD®7,00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4./20/2018 Subcatchment 1: Runoff = 0.00 cfs @ 20.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type It 24-hr 1-yr Rainfall=2.19" Area ac CN Description 0.350 98 1.110 36 Woods, Fair, HSG A 0.380 49 50-75% Grass cover, Fair, HSG A 1.840 50 Weighted Average Tc Length Slope Velocity Capacity Description min feet (ft/ft) (ft/sec) cfs 9.4 100 0.2100 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.55' 2.1 266 0.1730 2.1 Shallow Concentrated Flow, Woodland Kv= 5.0 f s 11.5 366 Total Subcatchment 2: Runoff - 0.33 cfs @ 11.96 hrs, Volume= 0.017 af, Depth= 1.86" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type Il 24-hr 1-yr Rainfall=2.19" Area ac CN Descri tion 0.110 98 Te Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 20.00 hrs, Volume= 0.000 of 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= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 1.86" for 1-yr event Inflow = 0.33 cfs @ 11.96 hrs, Volume= 0.017 of Outflow = 0.33 cfs @ 11.96 hrs, Volume= 0.017 af, Atten= 0%, Lag= 0.0 ruin Existing Conditions 4-1218 Type 1l 24-hr 1-yr Rainfall=2.19° Prepared by (enter your company name here) Page 4 H droCAD®7.00 sln 000927 c0 1986-2003 Applied Microcomputer Systems 4/20/2018 Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Existing Conditions 4-12-18 Type // 24-hr 10-yr Rainfall=3.62" Prepared by {enter your company name here} Page 5 H droCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4120/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Runoff Area=1.840 ac Runoff Depth=0.18" Flow Length=366' Tc=11.5 min CN=50 Runoff=0.17 cfs 0.028 of Subcatchment 2: Runoff Area=0.110 ac Runoff Depth=3.21" Tc=6.0 min CN=98 Runoff=0.55 cfs 0.029 of Reach DP1: Inflow=0.17 cfs 0.028 of Out€low=0.17 cfs 0,028 of Reach DP2: Inflow=0.55 cfs 0.029 of Outflow=0.55 cfs 0.029 of Total Runoff Area = 1.950 ac Runoff Volume = 0.057 of Average Runoff Depth = 0.35" Existing Conditions 4-12-18 Type 1124-hr 10-yr Rainfall=3.62" Prepared by {enter your company name here} Page 6 HydroCADO 7.00 s/n 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Subcatchment 1: Runoff = 0.17 cfs @ 12.12 hrs, Volume= 0.028 af, Depth= 0.18" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.62" Area ac CN Description 0.350 98 1.110 36 Woods, Pair, HSG A 0.380 49 50-75% Grass cover, l=air, HSG A 1.840 50 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 100 0.2100 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.55" 2.1 266 0.1730 2.1 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 11.5 366 Total Subcatchment 2: Runoff = 0.55 cfs @ 11.96 hrs, Volume= 0.029 af, Depth= 3.21" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.62" Area ac CN Description 0.110 98 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.18" for 10-yr event Inflow = 0.17 cfs @ 12.12 hrs, Volume= 0.028 of Outflow - 0.17 cfs @ 12.12 hrs, Volume= 0.028 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind*Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 3.21" for 10-yr event Inflow _ 0.55 cfs @ 11.96 hrs, Volume= 0.029 of Outflow = 0.55 cfs @ 11.96 hrs, Volume= 0.029 af, Atten= 0%, Lag= 0.0 min Existing Conditions 4-12-18 Type //24-hr 10-yr Rainfall=3.62" Prepared by {enter your company name here} Page 7 H droCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Existing Conditions 4-12-18 Type 11 24-hr 25-yr Rainfall=4.42" Prepared by {enter your company name here} Page 8 HydroCADO 7.00 s/n 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind}Trans method - Pond routing by Stor-Ind method Subcatchment 1: Runoff Area=1.840 ac Runoff Depth=0.40" Flow Length=366' Tc=11.5 min CN=50 Runoff=0.72 cfs 0.061 of Subcatchment 2: Runoff Area=0.110 ac Runoff Depth=3.97" Tc=6.0 min CN=98 Runoff=0.67 cfs 0.036 a€ Reach DP1: Inflow=0.72 cfs 0.061 of Outflow=0.72 cfs 0.061 of Reach DP2: Inflow=0.67 cfs 0.036 of Outflow=0.67 cfs 0.036 of Total Runoff Area = 1.950 ac Runoff Volume =0.097 of Average Runoff Depth = 0.60" Existing Conditions 4-12-18 Type 1124-hr 25-yr Rainfall=4.42" Prepared by {enter your company name here} Page 9 HydroCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Subcatchment 1: Runoff - 0.72 cfs @ 12.08 hrs, Volume= 0.061 af, Depth= 0.40" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type it 24-hr 25-yr Rainfall=4.42" Area (ac) CN Description .............. . .. 0.350 98 1.110 36 Woods, Fair, HSG A 0.380 49 50-75% Grass cover, Fair, HSG A 1.840 50 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 100 0.2100 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.55" 2.1 266 0.1730 2.1 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 11.5 366 Total Subcatchment 2: Runoff = 0.67 cfs @ 11.96 hrs, Volume= 0.036 af, Depth= 3.97' Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 25-yr Rainfall=4.42" Area (ac) CN Description 0.110 98 Tc Length Slope Velocity Capacity Description min feet ful ft/sec cfs 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.40" for 25-yr event Inflow - 0.72 cfs @ 12.08 hrs, Volume= 0.061 of Outflow = 0.72 cfs @ 12.08 hrs, Volume= 0.061 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 3.97" for 25-yr event Inflow = 0.67 cfs @ 11.96 hrs, Volume= 0.036 of Outflow - 0.67 cfs @ 11.96 hrs, Volume= 0.036 af, Atten= 0%, Lag= 0.0 min Existing Conditions 4-12-18 Type 1124-hr 25-yr Rainfall=4.42" Prepared by{enter your company name here} Page 10 H droCADO 7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Existing Conditions 4-12-18 Type 1124-hr 50--yr Rainfall=5.15" Prepared by {enter your company name here) Page 11 HydroCADO 7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Runoff Area=1.840 ac Runoff Depth=0.65" Flow Length=366' Tc=11.5 min CIV=50 Runoff=1.50 cfs 0.099 of Subcatchment 2: Runoff Area=0.110 ac Runoff Depth=4.66" Tc=6.0 min CN=98 Runoff=0.78 cfs 0.043 of Reach DP1: Inflow=1.50 cfs 0.099 of Outflow=1.50 cfs 0.099 of Reach DP2: lnflow=0.78 cfs 0.043 of Outflow=0.78 cfs 0.043 of Total Runoff Area = 1.950 ac Runoff Volume = 0.142 of Average Runoff Depth = 0.88" Existing Conditions 4-12-18 Type 1124-hr 50-yr Rainfall=5.15" Prepared by {enter your company name here) Page 12 H droCADO 7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems... 4./20/2018 Subcatchment 1: Runoff - 1.50 cfs @ 12.06 hrs, Volume= 0.099 af, Depth= 0.65" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 50-yr Rainfall=5.15" Area (ac) CN Description 0.350 98 1.110 36 Woods, Fair, HSG A 0.380 49 50-75% Grass cover, Fair, HSG A 1.840 50 Weighted Average Tc Length Slope Velocity Capacity Description min feet (ft/ft) ft/sec cfs 9.4 100 0.2100 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.55" 2.1 266 0.1730 2.1 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 11.5 366 Total Subcatchment 2: Runoff = 0.78 cfs @ 11.96 hrs, Volume= 0.043 af, Depth= 4.66" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 50-yr Rainfall=5.15" Area (ac) CN Description 0.110 98 Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.65" for 50-yr event Inflow - 1.50 cfs @ 12.06 hrs, Volume= 0.099 of Outflow = 1.50 cfs @ 12.06 hrs, Volume= 0.099 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 4.66" for 50-yr event Inflow = 0.78 cfs @ 11.96 hrs, Volume= 0.043 of Outflow - 0.78 cfs @ 11.96 hrs, Volume= 0.043 af, Atten= 0%, Lag= 0.0 min Existing Conditions 4-1218 Type // 24-hr 50-yr Rainfall=5,15" Prepared by {enter your company name here} Page 13 HydroCADO 7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Existing Conditions 4-12-18 Type // 24-hr 100-yr Rainfall=5.99" Prepared by (enter your company name here) Page 14 HydroCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 412012018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Star-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1: Runoff Area=1.840 ac Runoff Depth=0.99" Flow Length=366' Tc=11.5 min CN=50 Runo€f=2.57 cfs 0.153 of Subcatchment 2: Runoff Area=0.110 ac Runoff Depth=5.46" Tc=6.0 min CN=98 Runof€=0.91 cfs 0.050 of Reach DP1: Inflow=2.57 cfs 0.153 of Outflow=2.57 cfs 0.153 of Reach DP2: Inflow=0.91 cfs 0.050 of Out€low=0.91 cfs 0.050 of Total Runoff Area = 1.950 ac Runoff Volume = 0.203 of Average Runoff Depth = 1.25" Existing Conditions 4-1218 Type 1124-hr 900-yr Rainfali=5.99" Prepared by {enter your company name here) Page 15 H droCAD®7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Subcatchment 1: Runoff - 2.57 cfs @ 12.06 hrs, Volume= 0.153 af, Depth= 0.99" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 100-yr Rainfall=5.99" Area (ac) CN Description 0.350 98 1.110 36 Woods, Fair, HSG A 0.380 49 50-75% Grass cover, Fair, HSG A 1.840 50 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.4 100 0.2100 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.55" 2.1 266 0.1730 2.1 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 11.5 366 Total Subcatchment 2: Runoff = 0.91 cfs @ 11.96 hrs, Volume= 0.050 af, Depth= 5.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 100-yr Rainfall=5.99" Area (ac) CN Description 0.110 98 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.99" for 100-yr event Inflow 2.57 cfs @ 12.06 hrs, Volume= 0.153 of Outflow = 2.57 cfs @ 12.06 hrs, Volume= 0.153 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 5.46" for 100-yr event Inflow = 0.91 cfs @ 11.96 hrs, Volume= 0.050 of Outflow - 0.91 cfs @ 11.96 hrs, Volume= 0.050 af, Atten= 0%, Lag= 0.0 rain Existing Conditions 4-12-18 Type 1124-hr 100 yr Rainfall=5.99" Prepared by {enter your company name here) Page 16 HydroCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs 0.2A DP2 DP,1: os��qat �Reachl On [Li n kF Drainage Diagram for Proposed Conditions 4-12-18 I Prepared by{enter your company name here) 4/20/2018 '" HydroCADO 7.00 s/n 000927 ©1986-2003 Applied Microcomputer Systems Proposed Conditions 4-12-18 Type // 24-hr 1-yr Rainfall=2.19" Prepared by {enter your company name here} Page 2 HydroCAD® 7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1A: Runoff Area=1.130 ac Runoff Depth=1.03" Tc=6.0 min CN=88 Runoff=2.18 cfs 0.097 of Subcatchment 1B: Runoff Area=0.710 ac Runoff Depth=0.00" Flow Length=337` Tc=12.9 min CN=40 Runoff=0.00 cfs 0.000 of Subcatchment 2A: Runoff Area=0.110 ac Runoff Depth=1.86" Tc=6.0 min CN=98 Runoff=0.33 cfs 0.017 of Reach DPI: Inflow=0.00 cfs 0.000 of Outflow=0.00 cfs 0.000 of Reach DP2: Inflow=0.33 cfs 0.017 of Outflow=0.33 cfs 0.017 of Pond 2P: Peak Elev=452.01' Storage=1,719 cf Inflow=2.18 cfs 0.097 of Discarded=0.24 cfs 0.097 of Primary=0.00 cfs 0.000 of Outflow=0.24 cfs 0.097 of Total Runoff Area : '1.950 ac Runoff Volume =0.114 of Average Runoff Depth = 0.70" Proposed Conditions 4-12-18 Type // 24-hr 1-yr Rainfall=2.19" Prepared by {enter your company name here} Page 3 H droCADO 7.00 sln 000927 © 1986-2003 Applied.Microcom uter Systems 4/20/2018 Subcatchment 1A: Runoff = 2.18 cfs @ 11.97 hrs, Volume= 0.097 af, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=2.19" Area ac CN Description 0.940 98 0.190 39 >75% Grass cover, Good, HSG A 1.130 88 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1B: Runoff _ 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Depth= 0.00" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs. Type II 24-hr 1-yr Rainfall=2.19" Area (ac) CN Description 0.500 39 >75% Grass cover, Good, HSG A 0.190 36 Woods, Fair, HSG A 0.020 98 0.710 40 Weighted Average Tc Length Slope Velocity Capacity Description {min) (feet) (ftlft) ftlsec 11.1 100 0.0500 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.55" 1.8 237 0.1000 2.2 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 12.9 337 Total Subcatchment 2A: Runoff _ 0.33 cfs @ 11.96 hrs, Volume= 0.017 af, Depth= 1.86" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type It 24-hr 1-yr Rainfall=2.19" Area ac CN Description 0.110 98 Proposed Conditions 4-12-18 Type 1124-hr 1-yr Rainfall=2.19" Prepared by (enter your company name here) Page 4 H droCADO 7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) _ 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.00" for 1-yr event Inflow = 0.00 cfs @ 1.00 hrs, Volume= 0.000 of Outflow - 0.00 cfs @ 1.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area - 0.110 ac, Inflow Depth = 1.86" for 1-yr event Inflow = 0.33 cfs @ 11.96 hrs, Volume= 0.017 of Outflow = 0.33 cfs @ 11.96 hrs, Volume= 0.017 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Pond 2P: Inflow Area = 1.130 ac, Inflow Depth = 1.03" for 1-yr event Inflow = 2.18 cfs @ 11.97 hrs, Volume= 0.097 of Outflow = 0.24 cfs @ 11.80 hrs, Volume= 0.097 af, Atten= 89%, Lag= 0.0 min Discarded = 0.24 cfs @ 11.80 hrs, Volume= 0.097 of Primary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 452.01' @ 12.41 hrs Surf.Area= 1,708 sf Storage= 1,719 cf Plug-Flow detention time= 60.2 min calculated for 0.097 of(99% of inflow) Center-of-Mass det. time= 58.1 min ( 844.6 - 786.6 ) # Invert Avail.Stora e Storage Description 1 451.00' 15,522 cf Custom Stage Data (Prismatic) Listed below 18,788 cf Overall - 3,266 cf Embedded = 15,522 cf 2 451.75' 3,266 cf 78.0"W x 45.5"H x 7.101 Parabolic Arch x 28 Inside #1 18,788 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet (sq-!q cubic-feet cubic-feet 451.00 1,708 0 0 462.00 1,708 18,788 18,788 # Routing Invert Outlet Devices 1 Discarded 0.00' 0.008300 fpm Exfiltration over entire Surface area 2 Primary 444.21' 12.0" x 21.0' long Culvert CMP, square edge headwall, Ke= 0.500 Outlet Invert= 444.00' S= 0.0100 '1' n= 0.013 Cc= 0.900 3 Device 2 455.00' 6.0" Vert. Orifice/Grate C= 0.600 Proposed Conditions 4-1218 Type // 24-hr 1-yr Rainfall=2.99" Prepared by {enter your company name here} Page 5 H droCADO 7.00 s/n 000927 0 1986-2003 AP21ied Microcornputer Systems 4/20/2018 Discarded Outflow Max=0.24 cfs @ 11.80 hrs HW=451.15' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.24 cfs) (Primary Outflow Max=0.00 cfs @ 1.00 hrs HW=451.00' (free Discharge) L2=Culvert (Passes 0.00 cfs of 9.48 cfs potential flow) 'L3=Orifice/Grate ( Controls 0.00 cfs) Proposed Conditions 4-12-18 Type //24-hr 90-yr Rainfall=3.62" Prepared by {enter your company name here} Page 6 HydroCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Star-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1A: Runoff Area=1.130 ac Runoff Depth=2.22" Tc=6.0 min CN=88 Runoff=4.51 cfs 0.209 of Subcatchment 113: Runoff Area=0.710 ac Runoff Depth=0.01" Flow Length=337' Tc=12.9 min CN=40 Runoff=0.00 cfs 0.001 of Subcatchment 2A: Runoff Area=0.110 ac Runoff Depth=3.21" Tc=6.0 min CN=98 Runoff=0.55 cfs 0.029 of Reach DPI: Inflow=0.00 cfs 0.001 of Outflow=0.00 cfs 0.001 of Reach DP2: Inflow=0,55 cfs 0.029 of Outflow=0.55 cfs 0.029 of Pond 2P: Peak Eley=453.65' Storage=4,524 cf Inflow=4,51 cfs 0.209 of Discarded=0.24 cfs 0.186 of Primary=0.00 cfs 0.000 of Outflow=0.24 cfs 0.186 of Total Runoff Area = 1.950 ac Runoff Volume = 0.239 of Average Runoff Depth = 1.47" Proposed Conditions 4-12-18 Type ii 24-hr 1p-yr Rainfall=3.62" Prepared by {enter your company name here} Page 7 H droCAD®7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Subcatchment 1A: Runoff - 4.51 cfs @ 11.97 hrs, Volume= 0.209 af, Depth= 2.22" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 10-yr Rainfall=3.62" Area (ac) CN Description 0.940 98 0.190 39 >75% Grass cover, Good, HSG A 1.130 88 Weighted Average Tc Length Slope Velocity Capacity Description min feet (ft/ft) (ft/seccfs 6.0 Direct Entry, Subcatchment 1 B: Runoff = 0.00 cfs @ 18.82 hrs, Volume= 0.001 af, Depth= 0.01" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 10-yr Rainfall=3.62" Area ac CN Description 0.500 39 >75% Grass cover, Good, HSG A 0.190 36 Woods, Fair, HSG A 0.020 98 0.710 40 Weighted Average Tc Length Slope Velocity Capacity Description min feet (ft/ft) (ft/sec) cfs 11.1 100 0.0500 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.55" 1.8 237 0.1000 2.2 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 12.9 337 Total Subcatchment 2A: Runoff = 0.55 cfs @ 11.96 hrs, Volume= 0.029 af, Depth= 3.21" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=3.62" Area (ac) CN Description 0.110 98� Proposed Conditions 4-12-18 Type 1124-hr 90-yr Rainfall=3.62" Prepared by {enter your company name here} Page 8 HydroCAD®7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/tt) (ft/sec) (cfs) 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.00" for 10-yr event Inflow = 0.00 cfs @ 18.82 hrs, Volume= 0.001 of Outflow 0.00 cfs @ 18.82 hrs, Volume= 0.001 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 3.21" for 10-yr event Inflow = 0.55 cfs @ 11.96 hrs, Volume= 0.029 of Outflow - 0.55 cfs @ 11.96 hrs, Volume= 0.029 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Pond 2P: Inflow Area = 1.130 ac, Inflow Depth = 2.22" for 10-yr event Inflow = 4.51 cfs @ 11.97 hrs, Volume= 0.209 of Outflow = 0.24 cfs @ 11.60 hrs, Volume= 0.186 af, Atten= 95%, Lag= 0.0 min Discarded = 0.24 cfs @ 11.60 hrs, Volume= 0.186 of Primary - 0.00 cfs @ 1.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 453.65' @ 13.01 hrs Surf.Area= 1,708 sf Storage= 4,524 cf Plug-Flow detention time= 178.6 min calculated for 0.185 of(89% of inflow) Center-of-Mass det. time= 141.7 min ( 911.3 - 769.6 ) # Invert Avail.Storage Storage Description 1 451.00' 15,522 cf Custom Stage Data (Prismatic) Listed below 18,788 cf Overall - 3,266 cf Embedded = 15,522 cf 2 451.75' 3,266 cf 78.0"W x 45.5"W x 7.10'L Parabolic Arch x28 Inside #1 18,788 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet s -ft cubic-feet cubic-feet 451.00 1,708 0 0 462.00 1,708 18,788 18,788 # Routing Invert Outlet Devices 1 Discarded 0.00' 0.008300 fpm Exfiltration over entire Surface area 2 Primary 444.21' 12.0" x 21.0` long Culvert CMP, square edge headwall, Ke= 0.500 Outlet Invert= 444.00' S= 0.0100 T n= 0.013 Cc= 0.900 3 Device 2 455.00' 6.0" Vert. Orifice/Grate C= 0.600 Proposed Conditions 4-12-18 Type 1124-hr 90-yr Rainfall=3.62" Prepared by{enter your company name here} Page 9 H droCAD®7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 412012018 Discarded OutFlow Max=0.24 cfs @ 11.60 hrs HW=451.12` (Free Discharge) t.. l=Exfiltration (Exfiltration Controls 0.24 cfs) Primary Outflow Max=0.00 cfs @ 1.00 hrs HW=451.00' (Free Discharge) t-2=Culvert (Passes 0.00 cfs of 9.48 cfs potential flow) t-3=OrificelGrate ( Controls 0.00 cfs) Proposed Conditions 4-12-18 Type 1124-hr 25-yr Rainfall=4.42" Prepared by {enter your company name here} Page 10 H droCADO 7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1A: Runoff Area=1.130 ac Runoff Depth=2.92" Tc=6.0 min CN=88 Runoff=5.84 cfs 0.275 a€ Subcatchment 113: Runoff Area=0.710 ac Runoff Depth=0.09" Flow Length=337' Tc=12.9 min CN=40 Runoff=0.01 cfs 0.005 of Subcatchment 2A: Runoff Area=0.110 ac Runoff Depth=3.97" Tc=6.0 rain CN=98 Runoff=0.67 cfs 0.036 of Reach DP1: Inflow=0.01 cfs 0.005 of Outflow=0,01 cfs 0.005 of Reach DP2: Inflow=0.67 cfs 0.036 of Outflow=0.67 cfs 0.036 of Pond 2P: Peak Elev=454.71' Storage=6,342 cf Inflow=5.84 cfs 0.275 of Discarded=0.24 cfs 0.196 of Primary=0.00 cfs 0.000 of Outflow=0.24 cfs 0.196 of Total Runoff Area = 1.950 ac Runoff Volume = 0.316 of Average Runoff Depth = 1.95" Proposed Conditions 4-12-18 Type 1124-hr 25-yr Rainfall=4.42" Prepared by {enter your company name here} Page 11 H droCADO 7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Subcatchment Ilk Runoff = 5.84 cfs @ 11.97 hrs, Volume= 0.275 af, Depth= 2.92" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 25-yr Rainfall=4.42° Area ac CN Description 0.940 98 0.190 39 >75% Grass cover, Good, HSG A 1.130 88 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1 B: Runoff = 0.01 cfs @ 13.38 hrs, Volume= 0.005 af, Depth= 0.09" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 25-yr Rainfall=4.42" Area (ac) CN Description 0.500 39 >75% Grass cover, Good, HSG A 0.190 36 Woods, Fair, HSG A 0.020 98 0.710 40 Weighted Average Tc Length Slope Velocity Capacity Description min feet ft/ft ftlsec cfs 11.1 100 0.0500 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.55" 1.8 237 0.1000 2.2 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 12.9 337 Total Subcatchment 2A: Runoff 0.67 cfs @ 11.96 hrs, Volume= 0.036 af, Depth= 3.97' Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 25-yr Rainfall=4.42" Area ac CN Description 0.110 98 Proposed Conditions 4-12-18 Type 1124-hr 25-yr Rainfall=4.42" Prepared by {enter your company name here} Page 12 HydroCAD®7.00 s/n 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/tt) (ft/sec) (cfs) 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.03" for 25-yr event Inflow = 0.01 cfs @ 13.38 hrs, Volume= 0.005 of Outflow = 0.01 cfs @ 13.38 hrs, Volume= 0.005 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 3.97" for 25-yr event Inflow = 0.67 cfs @ 11.96 hrs, Volume= 0.036 of Outflow = 0.67 cfs @ 11.96 hrs, Volume= 0.036 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Pond 2P: Inflow Area = 1.130 ac, Inflow Depth = 2.92" for 25-yr event Inflow - 5.84 cfs @ 11.97 hrs, Volume= 0.275 of Outflow = 0.24 cfs @ 11.35 hrs, Volume= 0.196 af, Atten= 96%, Lag= 0.0 min Discarded = 0.24 cts @ 11.35 hrs, Volume= 0.196 of Primary = 0.00 cfs @ 1.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 454.71' @ 13.43 hrs Surf.Area= 1,708 sf Storage= 6,342 cf Plug-Flow detention time= 194.5 min calculated for 0.196 of (71% of inflow) Center-of-Mass det. time= 129.9 min ( 893.1 - 7632 ) # Invert Avail.Stora e Storage Description 1 451.00' 15,522 cf Custom Stage Data (Prismatic) Listed below 18,788 cf Overall - 3,266 cf Embedded = 15,522 cf 2 451.75' 3,266 cf 78.0"W x 45.5"H x 7.10'L Parabolic Arch x 28 Inside #1 18,788 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 451.00 1,708 0 0 462.00 1,708 18,788 18,788 # Routing Invert Outlet Devices 1 Discarded 0.00' 0.008300 fpm Exfiltration over entire Surface area 2 Primary 444.21' 12.0" x 21.0' long Culvert CMP, square edge headwall, Ke= 0.500 Outlet Invert= 444.00' S= 0.0100 '1' n= 0.013 Cc= 0.900 3 Device 2 455.00' 6.0" Vert. Orifice/Grate C= 0.600 Proposed Conditions 4-12-18 Type 1124-hr 25-yr Rainfall=4.42" Prepared by {enter your company name here} Page 13 H droCAD®7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Discarded OutFlow flax=0.24 cfs @ 11.35 hrs HW=451.11` (Free Discharge) t--1=Exfiltration (Exfiltration Controls 0.24 cfs) Primary OutFlow Max=0.00 cfs @ 1.00 hrs HW=451.00' (Free Discharge) t--2=Culvert (Passes 0.00 cfs of 9.48 cfs potential flow) L3=OrificelG rate ( Controls 0.00 cfs) Proposed Conditions 4-12-18 Type 11 24-hr 50-yr Rainfall=5.15" Prepared by {enter your company name here} Page 14 H droCADO 7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1A: Runoff Area=1.130 ac Runoff Depth=3.57" Tc=6.0 min CN=88 Runoff=7.05 cfs 0.336 of Subcatchment 1B: Runoff Area=0.710 ac Runoff Depth=0.21" Flow Length=337' Tc=12.9 min CN=40 Runoff=0.05 cfs 0.013 of Subcatchment 2A: Runoff Area=0.110 ac Runoff Depth=4.66" Tc=6A min CN=98 Runoff=0.78 cfs 0.043 of Reach DP1: Inflow=0.32 cfs 0.039 of Outflow=0.32 cfs 0.039 of Reach DP2: Inflow=0,78 cfs 0.043 of Outflow=0.78 cfs 0.043 of Pond 2P: Peak Elev=455.34' Storage=7,416 cf Inflow=7.05 cfs 0.336 of Discarded=0.24 cfs 0.206 of Primary=0.29 cfs 0.026 of Outflow=0.52 cfs 0.232 of Total Runoff Area = 1.950 ac Runoff Volume = 0.392 of Average Runoff Depth = 2.41" Proposed Conditions 4-12-18 Type Il 24-hr 50-yr Rainfall=5.15' Prepared by tenter your company name here) Page 15 H droCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer S sterns 4/20/2018 Subcatchment 1A: Runoff = 7.05 cfs @ 11.97 hrs, Volume= 0.336 af, Depth= 3.57' Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 50-yr Rainfall=5.15" Area (ac) CN Description 0.940 98 0.190 39 X75% Grass cover, Good, HSG A 1.130 88 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment 1 B: Runoff = 0.05 cfs @ 12.17 hrs, Volume= 0.013 af, Depth= 0.21" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 50-yr Rainfall=5.15" Area ac CN Description 0.500 39 X75% Grass cover, Good, HSG A 0.190 36 Woods, Fair, HSG A 0.020 98 0.710 40 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 11.1 100 0.0500 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.55" 1.8 237 0.1000 2.2 Shallow Concentrated Flow, _ Short Grass Pasture Kv= 7.0 fps 12.9 337 Total T �� Subcatchment 2A: Runoff = 0.78 cfs @ 11.96 hrs, Volume= 0.043 af, Depth= 4.66" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type 11 24-hr 50-yr Rainfall=5.15' Area (ac) CN Description 0.110 98 Proposed Conditions 4-12-18 Type 1124-hr 50-yr Rainfall=5.15" Prepared by {enter your company name here} Page 16 HydroCAD®7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Reach DP1: Inflow Area = 1.840 ac, Inflow Depth = 0.25" for 50-yr event Inflow = 0.32 cfs @ 12.55 hrs, Volume= 0.039 of Outflow - 0.32 cfs @ 12.55 hrs, Volume= 0.039 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 4.66" for 50-yr event Inflow = 0.78 cfs @ 11.96 hrs, Volume= 0.043 of Outflow = 0.78 cfs @ 11.96 hrs, Volume= 0.043 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Pond 2P: Inflow Area = 1.130 ac, Inflow Depth = 3.57" for 50-yr event Inflow _ 7.05 cfs @ 11.97 hrs, Volume= 0.336 of Outflow = 0.52 cfs @ 12.56 hrs, Volume= 0.232 af, Atten= 93%, Lag= 35.6 min Discarded = 0.24 cfs @ 11.15 hrs, Volume= 0.206 of Primary = 0.29 cfs @ 12.56 hrs, Volume= 0.026 of Routing by Star-Ind method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 455.34' @ 12.56 hrs Surf.Area= 1,708 sf Storage= 7,416 cf Plug-Flow detention time= 173.4 min calculated for 0.232 of (69% of inflow) Center-of-Mass det. time= 107.5 min ( 865.9 - 758.4 ) # Invert Avail.Stora e Storage Description 1 451.00' 15,522 cf Custom Stage Data (Prismatic) Listed below 18,788 cf Overall - 3,266 cf Embedded = 15,522 cf 2 451.75' 3,266 cf 78.0"W x 45.5"H x 7.10'L Parabolic Arch x 28 Inside #1 18,788 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store feet (sq-ft) cubic-feet cubic-feet 451.00 1,708 0 0 462.00 1,708 18,788 18,788 # Routin Invert Outlet Devices 1 Discarded 0.00' 0.008300 fpm Exfiltration over entire Surface area 2 Primary 444.21' 12.0" x 21.0' long Culvert CMP, square edge headwall, Ke= 0.500 Outlet Invert= 444.00' S= 0.0100 '1' n= 0,013 Cc= 0.900 3 Device 2 455.00' 6.0" Vert. Orifice/Grate C= 0.600 Proposed Conditions 4-12-18 Type // 24-hr 50-yr Rainfall=5.15" Prepared by (enter your company name here) Page 17 H droCADO 7.00 sln 000927 O 1986-2003 Applied Microcomputer Systems 4/20/2018 Discarded OutFlow Max=0.24 cfs @ 11.15 hrs HW=451.12' (Free Discharge) t-�1=EAltration (Exfiltration Controls 0.24 cfs) Primary OutFlow Max=0.28 cfs @ 12.56 hrs HW=455.34' (Free Discharge) Z-2=Culvert (Passes 0.28 cfs of 12.33 cfs potential flow) L3=Orifce/Grate (Orifice Controls 0.28 cfs @ 2.0 fps) Proposed Conditions 4-12-18 Type // 24-hr 700-yr Rainfall=5.99" Prepared by {enter your company name here) Page 18 H droCADO 7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Time span=1.00-20.00 hrs, dt=0.05 hrs, 381 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1A: Runoff Area=1.130 ac Runoff Depth=4.33" Tc=6.0 min CN=88 Runoff=8.44 cfs 0.408 of Subcatchment 1 B: Runoff Area=0.710 ac Runoff Depth=0.41" Flow Length=337' Tc=12.9 min CN=40 Runoff=0.21 cfs 0.024 of Subcatchment 2A: Runoff Area=0.110 ac Runoff Depth=5.46" Tc=6.0 min CN=98 Runoff=0.91 cfs 0.050 of Reach DP1: Inflow=0.93 cfs 0.101 of Outflow=0.93 cfs 0.101 of Reach DP2: Inflow=0.91 cfs 0.050 of Outflow=0.91 cfs 0.050 of Pond 2P: Peak Elev=455.91' Storage=8,381 cf Inflow=8.44 cfs 0.408 of Discarded=0.24 cfs 0.217 of Primary=0.77 cfs 0.077 of Outflow=1.00 cfs 0.293 of Total Runoff Area = 1.950 ac Runoff Volume = 0.482 of Average Runoff Depth = 2.97" Proposed Conditions 4-12-18 Type 1124-hr 100-yr Rainfall=5.99" Prepared by {enter your company name here) Page 19 HydroCADO 7.00 sln 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Subcatchment 1A: Runoff = 8.44 cfs @ 11.96 hrs, Volume= 0.408 af, Depth= 4.33" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=5.99" Area (ac) CN Description 0.940 98 0.190 39 >75% Grass cover, Good, HSG A 1.130 88 Weighted Average Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 6.0 Direct Entry, Subcatchment 1 B: Runoff _ 0.21 cfs @ 12.11 hrs, Volume= 0.024 af, Depth= 0.41" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type IE 24-hr 100-yr Rainfall=5.99" Area (ac) CN Description 0.500 39 >75% Grass cover, Good, HSG A 0.190 36 Woods, Fair, HSG A 0.020 98 0.710 40 Weighted Average Tc Length Slope Velocity Capacity Description min feet ft/ft ft/sec cfs 11.1 100 0.0500 0.2 Sheet Flow, Grass: Dense n= 0.240 P2= 2.55' 1.8 237 0.1000 2.2 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 Is 12.9 337 Total Subcatchment 2A: Runoff _ 0.91 cfs @ 11.96 hrs, Volume= O.050 af, Depth= 5.46" Runoff by SCS TR-20 method, UH=SCS, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=5.99" Area ac CN Description 0.110 98 Proposed Conditions 4-12-18 Type // 24-hr 100-yr Rainfall=5.99" Prepared by (enter your company name here) Page 20 H droCAD®7.00 sln 000927 O 1986-2003 Applied Microcom uter S stems 4/20/2018 Tc Length Slope Velocity Capacity Description min feet (ft/ft) (ft/sec) cfs 6.0 Direct Entry, Reach DP1: Inflow Area W 1.840 ac, Inflow Depth = 0.66" for 100-yr event Inflow = 0.93 cfs @ 12.17 hrs, Volume= 0.101 of Outflow - 0.93 cfs @ 12.17 hrs, Volume= 0.101 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Reach DP2: Inflow Area = 0.110 ac, Inflow Depth = 5.46" for 100-yr event Inflow = 0.91 cfs @ 11.96 hrs, Volume= 0.050 of Outflow = 0.91 cfs @ 11.96 hrs, Volume= 0.050 af, Atten= 0%, Lag= 0.0 min Routing by Star-Ind+Trans method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Pond 2P: Inflow Area = 1.130 ac, Inflow Depth = 4.33" for 100-yr event Inflow = 8.44 cfs @ 11.96 hrs, Volume= 0.408 of Outflow = 1.00 cfs @ 12.29 hrs, Volume= 0.293 af, Atten= 88%, Lag= 19.6 min Discarded = 0.24 cfs @ 10.80 hrs, Volume= 0.217 of Primary = 0.77 cfs @ 12.29 hrs, Volume= 0.077 of Routing by Stor-Ind method, Time Span= 1.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 455.91' @ 12.29 hrs Surf.Area= 1,708 sf Storage= 8,381 cf Plug-Flow detention time= 145.5 min calculated for 0.293 of (72% of inflow) Center-of-Mass det. time= 82.2 min ( 836.0 - 753.8 ) # Invert Avail.Stora e Storage Description 1 451.00' 15,522 cf Custom Stage Data (Prismatic) Listed below 18,788 cf Overall - 3,266 cf Embedded = 15,522 cf 2 451.75' 3,266 cf 78.0"W x 45.5"H x 7.10'L Parabolic Arch x28 Inside #1 18,788 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 451.00 1,708 0 0 462.00 1,708 18,788 18,788 # Routing Invert Outlet Devices 1 Discarded 0.00' 0.008300 fpm Exfiltration over entire Surface area 2 Primary 444.21' 12.0" x 21.0' long Culvert CMP, square edge headwall, Ke= 0.500 Outlet Invert= 444.00' S= 0.0100 '/' n= 0.013 Cc= 0.900 3 Device 2 455.00' 6.0" Vert. Orifice/Grate C= 0.600 Proposed Conditions 4-12-18 Type 1! 24-hr 100-yr Rainfall=5.99" Prepared by (enter your company name here) Page 21 H droCAD®7.00 s/n 000927 © 1986-2003 Applied Microcomputer Systems 4/20/2018 Discarded OutFiow Max=0.24 cfs @ 10.80 hrs HW=451.11` (Free Discharge) "�--1=Exfiltration (lxfiltration Controls 0.24 cfs) Primary Outflow Max=0.77 cfs @ 12.29 hrs. HW=455.91' (Free Discharge) t•--2=Culvert (Passes 0.77 cfs of 12.55 cfs potential flow) L3=Orifice/Grate (Orifice Controls 0.77 cfs @ 3.9 fps) Appendix D Stormwater Calculations LANSING ENGINEERING RC Woodfiled Mixed Use Development STORMWATER MANAGEMENT PLAN 894 STATE ROUTE 9 SITE PLAN WATER QUALITY VOLUME, WQv IMPERVIOUS COVER, I (%) A;= 0.94 acres impervious A= 1.13 acres total 1= 83.19 % RUNOFF COEFFICIENT, Rv Rv= 0.05+(1)(0.009) 0.799 USE Rv= 0.80 90% RAINFALL EVENT NUMBER, P P= 1.15 From Table 4.1 of the NYS Stormwater Management Design Manual WATER QUALITY VOLUME, WQv WQv= (P)(Rv)(A)112 WQv= 0.086 AC-FT LANSING ENGINEERING, PC Woodfiled Mixed Use Development STORMWATER MANAGEMENT PLAN 894 STATE ROUTE 9 SITE PLAN STREAM CHANNEL PROTECTION VOLUME, Cpv INITIAL ABSTRACTION, la CN= 88 FOR OVERALL DEVELOPED AREA la= (2001CN-2) 0.273 ONE-YEAR 24 HOUR DESIGN STORM PRECIPITATION, P P= 2.21 ]a/P= 0.123 TIME OF CONCENTRATION, Tc (hr.) Tc= 0.23 UNIT PEAK DISCHARGE, q„ qu= 504 csmlin Using TR-55 and Type II Rainfall Distribution (GPD Method) RATIO OF OUTFLOW TO INFLOW, qdq; Using q,,,T=24 hrs and Figure 8.5 of the NYS Stormwater Management Design Manual go/gi= 0.04 CHANNEL PROTECTION STORAGE/VOLUME OF RUNOFF, Vs/Vs Vs/V,R= 0.683-1.43(qolq;)+1.64(golq;)2-0.804(golq,)3 0.63 POST DEV. ONE-YEAR 24 HOUR DESIGN STORM RUNOFF, Q (inches) Q= 1.03 inches Using TR-55 and Type II Rainfall Distribution STREAM CHANNEL PROTECTION VOLUME, Cpv Cpv=Vs= (Vs/VR)(Q)(A)112 Cpv= 0.05 AC-FT AVERAGE RELEASE RATE, Cpv Avg. Rel. Rate The Cpv volume to be released over 24 hours Cp„Avg. Reel. Rate= 0.031 cfs LANSING ENGINEERING, PC Woodfiled Mixed Use Development STORMWATER MANAGEMENT PLAN 894 STATE ROUTE 9 SITE PLAN OVERBANK FLOOD PROTECTION VOLUME, Qpj0 PEAK OUTFLOW DISCHARGE/PEAK INFLOW DISCHARGE, q,,/q; qo= 0.17 cfs (pre-development 10 yr Qp) qi= 4.51 cfs (post-development 10 yr Qp) go/g3= 0.038 STORAGE VOLUME/RUNOFF VOLUME, VS/VR Using Figure 8.6 of the NYS Stormwater Management Design Manual VS/VR= 0.55 POST DEV. TEN-YEAR 24 HOUR DESIGN STORM RUNOFF, Q (inches) Q= 2.22 inches Using TR-55 and Type II Rainfall Distribution TOTAL STORM RUNOFF VOLUME, V V= QA 9106 cubic feet OVERBANK FLOOD PROTECTION VOLUME, Qpjo Qp1D=Vs= (VS/VR)(V)/43560 QPio= 0.11 AC-FT LANSING ENGINEERING, PC Woodfiled Mixed Use Development STORMWATER MANAGEMENT PLAN 894 STATE ROUTE 9 SITE PLAN EXTREME FLOOD PROTECTION VOLUME, Qf PEAK OUTFLOW DISCHARGE/PEAK INFLOW DISCHARGE, q,/q; qo= 2.57 cfs (pre-development 100 yr Qp) qi= 8.47 cfs (post-development 100 yr Qp) golq;= 0.30 STORAGE VOLUMEIRUNOFF VOLUME, VS/VR Using Figure 8.6 of the NYS Stormwater Management Design Manual VSIVR= 0.55 POST DEV. ONE HUNDRED-YEAR 24 HOUR DESIGN STORM RUNOFF, Q (inches) Q= 4.33 inches Using TR-55 and Type II Rainfall Distribution TOTAL STORM RUNOFF VOLUME, V V= QA 17761 cubic feet OVERBANK FLOOD PROTECTION VOLUME, Qpjo Qf=VS= (VSIVR)(V)143560 Qf= 0.22 AC-FT mv� +as'S�P'ly�q mac, G� �4 t 4 ?�°' �.� .rN'[S��'be, �-"��(�-Y'•�'-� -,-P.._ � r'`ua.;`�,''at �='�,�� -�'� . <,=� to 7" 'y�3- -'t.�, uy°. ,• `.; e 5'S`� -e'� v'``;''t'`i`�a.,.«,.C��'+�"a�'g':tif";�,a,'a. ST'-. , ��r.,,,. .�,"'vC�i�a, ,?;z"�i...'�"..,Ss`�L��°. ,Ra-;, `"ti,�".' ""w%'e�.°"'� ; `=dpi a w.. C, $ .0 r ! 'z��Y..��xy�� '�'` .�;��yany�::�fif,� �`��+c1�e4��2 ti�,,-. �(y�y' +at�iQ�,�i�"[',t'�`i� �S.a'�" •. �Oj: �i'3. h „^ �Ca�J2� t ,�'R6- � ;{�7 � tbwjej4. t. Project: $94 RT 9 Date: 3/30/2018 LEGEND Input Output PROPOSED TREATMENT CAPACITY F777qCFS WATER QUALITY VOLUME, WQv IMPERVIOUS COVER,I[%} RUNOFF COEFFICIENT,Rv A1= acres impervious Rv= 0.05+(1)(0.009) A= acres total = 0.799 1= 83.19 % USE Rv 0.799 90%RAINFALL EVENT NUMBER,P WATER QUALITY VOLUME,WQy P ;inches WQv= {P}(Rv)(A)112 WQv .._... .09Q.... AC-"T CN (COMPUTED) 90%RAINFALL EVENT NUMBER,P RUNOFF VOLUME,Q P= 1.20 inches Q= (WQv/A)x12 Q= x: 8407: inches 95 CN(COMPUTED) CN= 1000/[10+5P+i0Q-10(Q2+1.25QP)1/2] CN 97 7 UNIT PEAK DISCHARGE,q,, INITIAL ABSTRACTION,la INITIAL ABSTRACTION/P la= (200/CN-2) la/P Ia 007? TIME OF CONCENTRATION,t, UNIT PEAK DISCHARGE,q„ tc 6- minutes qu HO*csrn/in PEAK DISCHARGE,Qp DRAINAGE AREA,A PEAK DISCHARGE,Q,) z A 000j77-miles Cp= q,xAxQ 71 `CFS SEDIMENT STRIP SIZING FLOW RATE,Q* OPEN AREA FOR TREATMENT,a Q 4&GPM/SF a X23 00, ;SF AVLIABLE TREATEMENT FLOW,QT *As per Lane Enterprises QT W*#ko CFS Total WQv Is this project subject to Chapter 10 of the NYS Design Manual (i.e. WQv is equal to post- development 1 year runoff volume)? Manually enter P, Total Area and Impervious Cover, P 1.20inch lE3reakdvt�r1l,Sucatchers .. : ... ,. lmpersrtous �w r s Aesc�� trq� : 0.81: 81% 0.78 3,393 lnfiltsati,pn Basin 2 0 6.9 . 0.:00 0% 0.05 151 3 4 5 6 7 8 9 Non-GI Areas 0.00 0.00 -1000% -8.95 0 .Subtatal(a.µ29) 1.69.`; 0.81: 48% 0.48 3;544 Subtotal 1 Total 1.69 0.81 48% 0.48 31544 Initial WQV a S Conservation of Natural Areas 0.00 0.00 minimum 10,000 sf maximum contributing length 75 feet to Riparian Buffers 0.00 0'00 �150feet Filter Strips 0.00 0.00 Up to 100 sf directly connected impervious Tree Planting 0.69 0.00 area may be subtracted per tree Total 0.69 0.00 P�rcnt Runoff j Tot2lt Ar fMOervio s A 0 WQ� "«Initial WQv" 1.69 0.81 48% 0.48 3,544 Subtract Area -0.69 0.00 WQv adjusted after Area 1.00 0.81 81% 0.78 3,393 Reductions Disconnection of Rooftops 0.00 Adjusted WQv after Area Reduction and Rooftop 1.00 0.81 81% 0.78 3,393 Disconnect WE WQv reduced by Area Reduction techniques 151 LANSING ENGINEERING, PC Minimum RRv Soil Group Acres S A ::i.69 , 55% B 40% C 30% D 20% Total Area 1..69 S = 0.55 Impervious = 0.81. acre Precipitation 1.2 in Rv 0.95 Minimum RRA '4,844 Ift3 0.04 laf LANSING ENGINEERING, PG Green Infrastructure Summary Sheet ]Nlirnrr;um RRV Req��red. ,. 5 = 0.55 Impervious 0.81. acre Precipitation 1.20 in Rv 0.95 Minimum RRv 1,844 ':. ft3 0.042 of RRv IP�ovideci �� E Reduction Technique ft3 of Area 151 0.003 Volume 0 0.000 Infiltration 3393 0.078 Total RRv Provided ..3;544. 0.08.1 RRv ft3 of Minimum Required 1,844 0.042 Provided 3,544 0.081 Is RRv Provided ? Minimum RRv Required? Yes i1VQv ��mma WQV ft3 of Reduced/Treated 3,544 0.081 WQv to be Treated by Standard 0 0.000 Practices F. LANSING ENGINEERING, PC Infiltration Basin Worksheet �r�t�r�t�`flata�4�p�a�n�ge l�r�a to iae Treated by Praet��e .: ., . . . ., tmper�rous ` Per�t�� Tatal Ares 1NC3v 1pre�tptt�tian �a1 Practice '. area #rxtper�tio�s Ru , � Descr�p��on (Ares) �rn� f� 1 1 1.00 0.81 0.81 0.78 3393.32 1.20 Infiltration Basin Enter Impervious Area «WQv after adjusting for Reduced by Disconnection of 81% 0.78 3,393 Disconnected Rooftops Rooftops Enter the portion of the WQv that is not reduced for all practices routed to this practice. ft3 .. ..:. Infiltration Rate .6 DO,., in/hour Okay 25%minimum; Pretreatment Sizing 400 % WQv 50%if>2 in/hr 100%if>5in/hour Pretreatment Required Volume 3,393 ft3 Pretreatment Provided 3;39.3... t3 Inadequate Pretreatment Provided Pretreatment Techniques utilized Other`' size Ain�nfiitraltion Basin. Design 3 Volume 3,393 ft WQv Basal Area 707 f t2 Infiltration practices shall be designed to exfiltrate the entire WQv Required through the floor of each practice. Basal Area Provided x;708 ft 2 Design Depth 4:80.,...' ft Volume 8,198 f t3 Storage Volume provided in infiltration basin area (not including Provided pretreatment. RRV 3,393 3 1 �%of the storage provided%the,basrn or WQv whrchever is smaller Volume Treated 0 ft 3 This is the portion of the WQv that is not reduced/infiltrated Sizing U OK The infiltration basin must provide storage equal to or greater than the WQv of the contributing area. LANSING ENGINEERING, PC Tree Planting/Tree Pits It]118rH1i3�S PerG; nt GI r dice Total Areas W v Pre spit' ion i'Acres� : ,.Area imperuaous z IRv �i�} ue�cr�ptiv� S A r5} 2 0.69 0.00 0.00 0.05 150.67 1.20 Do you intend to use this practice for area reduction or volume reduction? Is another area based practice applied to this area? No . Diameter of Mature Canopy 16 ft For up to a 16 foot diameter canopy of a Area Reduced per Tree 100 sf mature tree, the area considered for reduction shall be 'z the area of the tree Number of Trees Total Area Reduced 1004.8 sf 0.02 of Okay Area Ratio: Total to Impervious area 6899.9 Okay Are All Criteria in Section 5.3.4 met? Yes. Ira a titian A1ustltS `. Tt Subtract 0 69 Acres from total Area Subtract q.qq Acres from total Impervious Area LANSING ENGINEERING, PC Appendix E Grading/Drainage/Sediment, Erosion Control, and Landscaping Plan Appendix F NYSDEC SPDES General Permit GP-0-15-002 ' E YORK Departmentof STA T .O Ot��r5r��r�.��a�7r Environmental Conservation NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES From CONSTRUCTION ACTIVITY Permit No. GP-0-15-002 Issued Pursuant to Article 17, Titles 7, 8 and Article 70 of the Environmental Conservation Law Effective Date: January 29, 2015 Expiration Date: January 28, 2020 John J. Ferguson Chief Permit Administrator Auth/ori�ed 800nature Date _ W Address: NYS DEC Division of Environmental Permits 625 Broadway, 4th Floor Albany, N.Y. 12233-1750 PREFACE Pursuant to Section 402 of the Clean Water Act ("MA"), 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's State Pollutant Discharge Elimination System ("SPDES') is a NPDES- approved program with permits issued in accordance with the Environmental Conservation Law("ECL'). This general permit ("permit") is issued pursuant to Article 17, Titles 7, 8 and Article 70 of the ECL. An owner or operator may obtain coverage under this permit by submitting a Notice of Intent ("NOI") to the Department. Copies of this permit and the NO] for New York are available by calling (518) 402-8109 or at any New York State Department of Environmental Conservation ("the Department") regional office (see Appendix G).They are also available on the Department's website at: http://www.dec.novi An owner or operator of a construction activity that is eligible for coverage under this permit must obtain coverage prior to the commencement of construction activity. Activities that fit the definition of "construction activity', as defined under 40 CFR 122.26(b)(14)(x), (15)(i), and (15)(ii), constitute construction of a point source and therefore, pursuant to Article 17-0505 of the ECL, the owner or operator must have coverage under a SPDES permit prior to commencing construction activity. They cannot wait until there is an actual discharge from the construction site to obtain permit coverage. Note: The italicized wordstphrases within this permit are defined in Appendix A. I NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES Part I. PERMIT COVERAGE AND LIMITATIONS..............................................................1 A. Permit Application ................................................................... .......... B. Effluent Limitations Applicable to Discharges from Construction Activities ...........1 C. Post-construction Stormwater Management Practice Requirements ....................4 D. Maintaining Water Quality.................. ....... .....8 .......................... ............................. E. Eligibility Under This General Permit.....................................................................9 F. Activities Which Are Ineligible for Coverage Under This General Permit ..............9 Part II, OBTAINING PERMIT COVERAGE .....................................................................12 A. Notice of Intent (NOI) Submittal ................................................... ........12 ............... B. Permit Authorization............................................................................. C. General Requirements For Owners or Operators With Permit Coverage ...........15 D. Permit Coverage for Discharges Authorized Under GP-0-10-001 .......................17 E. Change of Owner or Operator.............................................................................17 Part III. STORMWATER POLLUTION PREVENTION PLAN (SWPPP).......... ................18 A. General SWPPP Requirements ..........................................................................18 B. Required SWPPP Contents ................................................................................20 C. Required SWPPP Components by Project Type.................................................23 Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS .....................................24 A. General Construction Site Inspection and Maintenance Requirements ..............24 B. Contractor Maintenance Inspection Requirements .............................................24 C. Qualified Inspector Inspection Requirements....................... .......... ...................24 Part V. TERMINATION OF PERMIT COVERAGE...........................................................28 A. Termination of Permit Coverage .........................................................................28 Part VI. REPORTING AND RETENTION OF RECORDS................................................30 A. Record Retention ................................................................................................ 30 B. Addresses...........................................................................................................30 Part Vii. STANDARD PERMIT CONDITIONS.................................................................31 A. Duty to Comply................................ .......... 31 B. Continuation of the Expired General Permit........................................................31 C. Enforcement.......................................................................................... ............31 D. Need to Halt or Reduce Activity Not a Defense...................................................31 E. Duty to Mitigate ...................................................................................................32 F. Duty to Provide Information.................................................................................32 G. Other Information ................................................................................................32 H. Signatory Requirements......................................................................................32 I. Property Rights....................................................................................................... 34 J. Severability............................................................................................................. 34 K. Requirement to Obtain Coverage Under an Alternative Permit...........................34 L. Proper Operation and Maintenance ....................................................................35 M. Inspection and Entry ...........................................................................................35 N. Permit Actions..................................................................................................... 36 O. Definitions ........................................................................................................... 36 P. Re-Opener Clause ..............................................................................................36 11 Q. Penalties for Falsification of Forms and Reports.................................................36 R. Other Permits......................................................................................................36 APPENDIXA....................................................................................................................37 APPENDIXB....................................................................................................................44 APPENDIXC .................................................................................................46 APPENDIXD ...................................................................................................................52 APPENDIXE....................................................................................................................53 APPENDIXF_.. ........ ........ ...,... .....,..,..,..,,..,... .. ......,......,...... , ..._.., .,,.,. , ,..... . .,,.......55 III (Part 1) Part I. PERMIT COVERAGE AND LIMITATIONS A. Permit Application This permit authorizes stormwater discharges to surface waters of the State from the following construction activities identified within 40 CFR Parts 122.26(b)(1 4)(x), 122.26(b)(1 5)(i) and 122.26(b)(15)(ii), provided all of the eligibility provisions of this permit are met: 1. Construction activities involving soil disturbances of one (1) or more acres; including disturbances of less than one acre that are part of a larger common plan of development or sale that will ultimately disturb one or more acres of land; excluding routine maintenance activity that is performed to maintain the original line and grade, hydraulic capacity or original purpose of a facility; 2. Construction activities involving soil disturbances of less than one (1) acre where the Department 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. 3. Construction activities located in the watershed(s) identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. B. Effluent Limitations Applicable to Discharges from Construction Activities Discharges authorized by this permit must achieve, at a minimum, the effluent limitations in Part 1.B.1. (a)—(f)of this permit. These limitations represent the 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 I.B.1.(a) -- (f) of this permit and be in accordance with the New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005, 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 the Stormwater Pollution Prevention Plan (°SWPPP") the reason(s) for the deviation or alternative design and provide information 1 (Part I.B.1) which demonstrates that the deviation or alternative design is equivalent to the technical standard. a. Erosion and Sediment Controls. Design, install and maintain effective erosion and sediment controls to minimize the discharge of pollutants and prevent a violation of the water quality standards. At a minimum, such controls must be designed, installed and maintained to: (i) Minimize soil erosion through application of runoff control and soil stabilization control measure to minimize pollutant discharges; (ii) Control stormwater discharges to minimize channel and streambank erosion and scour in the immediate vicinity of the discharge points; (iii) Minimize the amount of soil exposed during construction activity; (iv) Minimize the disturbance of steep slopes; (v) Minimize sediment discharges from the site; (vi) Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas and maximize stormwater infiltration to reduce pollutant discharges, unless infeasible; (vii) Minimize soil compaction. Minimizing soil compaction is not required 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. b. Soil Stabilization. In areas where soil disturbance activity has temporarily or permanently ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within fourteen (14) 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 E or is located in one of the watersheds listed in Appendix C, the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven (7) days from the date the current soil disturbance activity ceased. See Appendix A for definition of Temporarily Ceased. c. Dewatering. Discharges from dewatering activities, including discharges 2 (Part I.B.1.c) from dewatering of trenches and excavations, must be managed by appropriate control measures. d. Pollution Prevention Measures. 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 designed, installed, implemented and maintained to: (i) Minimize the discharge of pollutants from equipment and vehicle washing, wheel wash water, and other wash waters. This applies to washing operations that use clean water only. Soaps, detergents and solvents cannot be used; (ii) Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste and other materials present on the site to precipitation 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. Prohibited Discharges. The following discharges are prohibited: (i) Wastewater from washout of concrete; (ii) Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds and other construction materials; (iii) Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; (iv) Soaps or solvents used in vehicle and equipment washing; and (v) Toxic or hazardous substances from a spill or other release. f. Surface Outlets. When discharging from basins and impoundments, the outlets shall be designed, constructed and maintained in such a manner that sediment does not leave the basin or impoundment and that erosion 3 (Part I.B.1 .f) at or below the outlet does not occur. C. Post-construction Stormwater Management Practice Requirements 1. The owner or operator of a construction activity that requires post- construction stormwater management practices pursuant to Part 11I.C. of this permit must select, design, install, and maintain the practices to meet the performance criteria in the New York State Stormwater Management Design Manual ("Design Manual"), dated January 2015, using sound engineering judgment. Where post-construction stormwater management practices ("SMPs°) are not designed in conformance with the performance criteria in the Design Manual, 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 post- construction stormwater management practices pursuant to Part III.C. of this permit must design the practices to meet the applicable sizing criteria in Part I.C.2.a., b., c. or d. of this permit. a. Sizing Criteria for New Development (i) Runoff Reduction Volume ("RRv"): Reduce the total Water Quality Volume ("WQv") by application of RR techniques and standard SMPs with RRv capacity. The total WQv shall be calculated in accordance with the criteria in Section 42 of the Design Manual. (ii) Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part I.C.2.a.(i) of this permit due to site limitations shall direct runoff from all newly constructed 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 shall 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 4.3 of the Design Manual. The remaining portion of the total WQv 4 (Part I.C.2.a.ii) that cannot be reduced shall be treated by application of standard SMPs. (iii) Channel Protection Volume ("Cpv"): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event; remaining after runoff reduction. 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 site discharges directly to tidal waters, or fifth order or larger streams. (iv) 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 discharges directly to tidal waters or fifth order or larger streams, or (2) A downstream analysis reveals that overbank control is not required. (v) 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 discharges directly 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 Watershed (i) Runoff Reduction Volume (RRv): Reduce the total Water Quality Volume (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 shall be calculated in accordance with the criteria in Section 10.3 of the Design Manual. (ii) Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part I.C.2.b.(i) of this permit due to site limitations shall direct runoff from all newly constructed impervious areas to a RR technique or 5 (Part I.C.2.b.ii) standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv shall be documented in the SW PPP. 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 10.3 of the Design Manual. The remaining portion of the total WQv that cannot be reduced shall be treated by application of standard SMPs. (iii) Channel Protection Volume (Cpv): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event; remaining after runoff reduction. 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 site discharges directly to tidal waters, or fifth order or larger streams. (iv) 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 discharges directly to tidal waters or fifth order or larger streams, or (2) A downstream analysis reveals that overbank control is not required. (v) 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 discharges directly 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 6 (Part I.C.2.c.i) (i) Water Quality Volume (WQv): The WQv treatment objective for redevelopment activity shall be addressed by one of the following options. Redevelopment activities located in an Enhanced Phosphorus Removal Watershed (see Part III.B.3. and Appendix C of this permit) shall calculate the WQv in accordance with Section 10.3 of the Design Manual. All other redevelopment activities shall calculate the WQv in accordance with Section 4.2 of the Design Manual. (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 .5 of the Design Manual must be applied to all newly created pervious areas, or (2) Capture and treat a minimum of 25%of the WQv from the disturbed, impervious area by the application of standard SMPs; or reduce 25% of the WQv from the disturbed, impervious area by the application of RR techniques or standard SMPs with RRv capacity., or (3) Capture and treat a minimum of 75%of the WQv from the disturbed, impervious area as well as any additional runoff from tributary areas by application of the alternative practices discussed in Sections 9.3 and 9.4 of the Design Manual., or (4) Application of a combination of 1, 2 and 3 above that provide a weighted average of at least two of the above methods. Application of this method shall be in accordance with the criteria in Section 9.2.1(B) (IV) of the Design Manual. If there is an existing post-construction stormwater management practice 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 — 4 above. (ii) Channel Protection Volume (Cpv): Not required if there are no changes to hydrology that increase the discharge rate from the project site. (iii) Overbank Flood Control Criteria (Qp): Not required if there are no changes to hydrology that increase the discharge rate from the project site. 7 (Part I.C.2.c.iv) (iv) Extreme Flood Control Criteria (Qf): Not required if there are no changes to hydrology that increase 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 shall provide post-construction stormwater management controls that meet the sizing criteria calculated as an aggregate of the Sizing Criteria in Part I.C.2.a. or b, of this permit for the New Development portion of the project and Part I.C.2.c of this permit for Redevelopment Activity portion of the project. D. Maintaining Water Quality The Department expects that compliance with the conditions 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 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, such as: 1. There shall be no increase in turbidity that will cause a substantial visible contrast to natural conditions; 2. There shall be no increase in suspended, colloidal or settleable solids that will cause deposition or impair the waters for their best usages; and 3. There shall 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 standards; the owner or operator must take appropriate corrective action in accordance with Part IV.C.5. of this general permit and document in accordance with Part IV.C.4. of this general permit. To address the wafer quality standard violation the owner or operator may need to provide additional information, include and implement appropriate controls in the SWPPP to correct the problem, or obtain an individual SPDES permit. If there is evidence indicating that despite compliance with the terms and conditions of this general permit it is demonstrated that the stormwater discharges authorized by this permit are causing or contributing to a violation of water quality standards, or (Part I.D) if the Department determines that a modification of the permit is necessary to prevent a violation of water quality standards, the authorized discharges will no longer be eligible for coverage under this permit. The Department may require the owner or operator to obtain an individual SPDES permit to continue discharging. E. Eligibility Under This General Permit 1. This permit may authorize all discharges of stormwater from construction activity to surface waters of the State and groundwaters except for ineligible discharges identified under subparagraph F. of this Part. 2. Except for non-stormwater discharges explicitly listed in the next paragraph, this permit only authorizes stormwater discharges from construction activities. 3. Notwithstanding paragraphs EA and E.2 above, the following non- stormwater discharges may be authorized by this permit: discharges from firefighting activities; fire hydrant flushings; waters to which cleansers or other components have not been added that are used to wash vehicles or control dust in accordance with the SWPPP, routine external building washdown which does not use detergents; pavement washwaters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used; air conditioning condensate; uncontaminated groundwater or spring water; uncontaminated discharges from construction site de-watering operations; and foundation or footing drains where flows are not contaminated with process materials such as solvents. For those entities required to obtain coverage under this permit, and who discharge as noted in this paragraph, and with the exception of flows from firefighting activities, these discharges must be identified in the SWPPP. Under all circumstances, the owner or operator must still comply with water quality standards in Part LD of this permit. 4. The owner or operator must maintain permit eligibility to discharge under this permit. Any discharges that are not compliant with the eligibility conditions of this permit are not authorized by the permit and the owner or operator must either apply for a separate permit to cover those ineligible discharges or take steps necessary to make the discharge eligible for coverage. F. Activities Which Are Ineligible for Coverage Under This General Permit All of the following are not authorized by this permit- 9 (Part l.F) 1 , Discharges after construction activities have been completed and the site has undergone final stabilization, 2. Discharges that are mixed with sources of non-stormwater other than those expressly authorized under subsection E.3. of this Part and identified in the SWPPP required by this permit; 3. Discharges that are required to obtain an individual SPDES permit or another SPDES general permit pursuant to Part VII.K. of this permit; 4. Construction activities or discharges from construction activities that may adversely affect an endangered or threatened species unless the owner or 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.C.2 of this permit. 5. Discharges which either cause or contribute to a violation of water quality standards adopted pursuant to the ECL and its accompanying regulations; 6. Construction activities for residential, commercial and institutional projects: a. Where the discharges from the construction activities are tributary to waters of the state classified as AA or AA-s; and b. Which disturb one or more acres of land with no existing impervious cover; and c. Which are undertaken on land with a Soil Slope Phase that is identified as an E or F, or the map unit name is inclusive of 25% or greater slope, on the United States Department of Agriculture ("USDA") Soil Survey for the County where the disturbance will occur. 7. Construction activities for linear transportation projects and linear utility projects: a. Where the discharges from the construction activities are tributary to waters of the state classified as AA or AA-s; and b. Which disturb two or more acres of land with no existing impervious cover; and c. Which are undertaken on land with a Soil Slope Phase that is identified as an E or I=, or the map unit name is inclusive of 25% or greater slope, on the USDA Soil Survey for the County where the disturbance will occur. 10 (Part I.F.8) 8. Construction activities that have the potential to affect an historic property, unless there is documentation that such impacts have been resolved. The following documentation necessary to demonstrate eligibility with this requirement shall be maintained on site in accordance with Part II.C.2 of this permit and made available to the Department in accordance with Part VII.F of this permit: a. Documentation that the construction activity is not within an archeologically sensitive 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. Y 1-5 acres of disturbance - 20 feet ■ 5-20 acres of disturbance - 50 feet 0 20+ acres of disturbance - 100 feet, or b. DEC consultation form sent to OPRHP, and copied to the NYS DEC Agency Historic Preservation Officer (APO), and (i) the State Environmental Quality Review (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/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); or c. Documentation of satisfactory compliance with Section 106 of the National Historic Preservation Act for a coterminous project area: (i) No Affect (ii) No Adverse Affect 11 (Part I.F.8.c.iii) (iii) Executed Memorandum of Agreement, or d. Documentation that: (i) SHPA Section 14.09 has been completed by NYS DEC or another state agency. 9. Discharges from construction activities that are subject to an existing SPDES individual or general permit where a SPDES permit for construction activity has been terminated or denied; or where the owner or operator has failed to renew an expired individual permit. Part II. OBTAINING PERMIT COVERAGE A.Notice of Intent (NOI) Submittal 1. 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 prepare a SWPPP in accordance with all applicable requirements of this permit and then submit a completed NOI form to the Department in order to be authorized to discharge under this permit. An owner or operator shall use either the electronic (eNOI) or paper version of the NOI that the Department prepared. Both versions of the NOI are located on the Department's website (http:llwww.dec.nygov/ ). The paper version of the NOI shall be signed in accordance with Part VI1.H. of this permit and submitted to the following address. NOTICE OF INTENT NYS DEC, Bureau of Water Permits 625 Broadway, 4t" Floor Albany, New York 122333505 2. An owner or operator of a construction activity that is subject to the requirements of a regulated, traditional land use control MS4 must first prepare a SWPPP in accordance with all applicable requirements of this permit and then have its SWPPP reviewed and accepted by the regulated, traditional land use control MS4 prior to submitting the NOI to the Department. The owner or operator shall have the "MS4 SWPPP Acceptance" form signed in accordance with Part VII.H., and then submit that form along with a completed NOI to the Department. An owner or operator shall use either the electronic (eNOI) or paper version of the NOI. The paper version of the NOI shall be signed in accordance with Part VII.H. of this permit and submitted to the address in Part II.A.1. 12 (Part II.A.2) The requirement for an owner or operator to have its SWPPP reviewed and accepted by the MS4 prior to submitting the NOI to the Department does not apply to an owner or operator that is obtaining permit coverage in accordance with the requirements in Part II.E. (Change of Owner or Operator) or where the owner or operator of the construction activity is the regulated, traditional land use control MS4. 3. The owner or operator shall have the SWPPP preparer sign the "SWPPP Preparer Certification" statement on the NOI prior to submitting the form to the Department. 4. As of the date the NOI is submitted to the Department, the owner or operator shall make the NOI and SWPPP available for review and copying in accordance with the requirements in Part VII.F. of this permit. B. Permit Authorization 1. An owner or operator shall not commence construction activity until their authorization to discharge under this permit goes into effect. 2. Authorization to discharge under this permit will be effective when the owner or operator has satisfied all of the following criteria: a. project review pursuant to the State Environmental Quality Review Act ("SEQRA") have been satisfied, when SEQRA is applicable. See the Department's website (http://www.dec.ny.gov/) for more information, b. where required, all necessary Department permits subject to the Uniform Procedures Act ("UPA') (see 6 NYCRR Part 621) have been obtained, unless otherwise notified by the Department pursuant to 6 NYCRR 621 .3(x)(4). Owners or operators of construction activities that are required to obtain UPA permits must submit a preliminary SWPPP to the appropriate DEC Permit Administrator at the Regional Office listed in Appendix F at the time all other necessary UPA permit applications are submitted. The preliminary SWPPP must include sufficient information to demonstrate that the construction activity qualifies for authorization under this permit, c. the final SWPPP has been prepared, and d. a complete NOI has been submitted to the Department in accordance with the requirements of this permit. 3. An owner or operator that has satisfied the requirements of Part II.B.2 above 13 (Part II.B.3) will be authorized to discharge stormwater from their construction activity in accordance with the following schedule: a. For construction activities that are not subject to the requirements of a regulated, traditional land use control MS4: (i) Five (5) business days from the date the Department receives a complete electronic version of the NOI (eNO1) for construction activities with a SWPPP that has been prepared in conformance with the design criteria in the technical standard referenced in Part II1.B.1 and the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, for construction activities that require post-construction stormwater management practices pursuant to Part III.C.; or (ii) Sixty (60) business days from the date the Department receives a complete NOI (electronic or paper version) for construction activities with a SWPPP that has not been prepared in conformance with the design criteria in technical standard referenced in Part 111.13.1. or, for construction activities that require post-construction stormwater management practices pursuant to Part 111.C., the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, or; (iii) Ten (10) business days from the date the Department receives a complete paper version of the NOI for construction activities with a SWPPP that has been prepared in conformance with the design criteria in the technical standard referenced in Part II1.B.1 and the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, for construction activities that require post- construction stormwater management practices pursuant to Part III.C. b. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4: (i) Five (5) business days from the date the Department receives both a complete electronic version of the NOI (eNOI) and signed "MS4 SWPPP Acceptance" form, or (ii) Ten (10) business days from the date the Department receives both a complete paper version of the NOI and signed "MS4 SWPPP Acceptance" form. 4. The Department may suspend or deny an owner's or operator's coverage 14 (Part II.B.4) under this permit if the Department determines that the SWPPP does not meet the permit requirements. In accordance with statute, regulation, and the terms and conditions of this permit, the Department may deny coverage under this permit and require submittal of an application for an individual SPDES permit based on a review of the NOI or other information pursuant to Part 11. 5. Coverage under this permit authorizes stormwater discharges from only those areas of disturbance that are identified in the NOI. If an owner or operator wishes to have stormwater discharges from future or additional areas of disturbance authorized, they must submit a new NOI that addresses that phase of the development, unless otherwise notified by the Department. The owner or operator shall not commence construction activity on the future or additional areas until their authorization to discharge under this permit goes into effect in accordance with Part 11.B. of this permit. C. General Requirements For Owners or Operators With Permit Coverage 1. The owner or operator shall ensure that the provisions of the SWPPP are implemented from the commencement of construction activity until all areas of disturbance have achieved final stabilization and the Notice of Termination ("NOT") has been submitted to the Department in accordance with Part V. of this permit. This includes any changes made to the SWPPP pursuant to Part III.A.4. of this permit. 2. The owner or operator shall maintain a copy of the General Permit (GP-0- 15-002), NOI, NOl Acknowledgment Letter, SWPPP, MS4 SWPPP Acceptance form, inspection reports, and all documentation necessary to demonstrate eligibility with this permit at the construction site until all disturbed areas have achieved final stabilization and the NOT has been submitted to the Department. The documents must be maintained 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. 3. The owner or operator of a construction activity shall not disturb greater than five (5) acres of soil at any one time without prior written authorization from the Department or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the regulated, traditional land use control MS4 (provided the regulated, traditional land use control MS4 is not the owner or operator of the construction activity). At a minimum, the owner or operator must comply with the following requirements in order to be authorized to disturb greater than five (5) acres of soil at any one time: a. The owner or operator shall 15 (Part II.C.3.a) have a qualified inspector conduct at least two (2) site inspections in accordance with Part IV.C. of this permit every seven (7) calendar days, for as long as greater than five (5) acres of soil remain disturbed. The two (2) inspections shall be separated by a minimum of two (2) full calendar days. b. In areas where soil disturbance activity has temporarily or permanently ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven (7) days from the date the current soil disturbance activity ceased. The soil stabilization measures selected shall be in conformance with the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. c. The owner or operator shall prepare a phasing plan that defines maximum disturbed area per phase and shows required cuts and fills. d. The owner or operator shall install any additional site specific practices needed to protect water quality. e. The owner or operator shall include the requirements above in their SWPPP. 4. In accordance with statute, regulations, and the terms and conditions of this permit, the Department may suspend or revoke an owner's or operator's coverage under this permit at any time if the Department determines that the SWPPP does not meet the permit requirements. Upon a finding of significant non-compliance with the practices described in the SWPPP or violation of this permit, the Department may order an immediate stop to all activity at the site until the non-compliance is remedied. The stop work order shall be in writing, describe the non-compliance in detail, and be sent to the owner or operator. 5. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4, the owner or operator shall notify the regulated, traditional land use control MS4 in writing of any planned amendments or modifications to the post-construction stormwater management practice component of the SWPPP required by Part IIIA. 4. and 5. of this permit. Unless otherwise notified by the regulated, traditional land use control MS4, the owner or operator shall have the SWPPP amendments or modifications reviewed and accepted by the regulated, traditional land use control MS4 prior to commencing construction of the post-construction stormwater management practice 16 (Part ILD) D. Permit Coverage for Discharges Authorized Under GP-0-10-001 1 � Upon renewal of SPDES General Permit for Stormwater Discharges from Construction Activity (Permit No. GP-0-10-001), an owner or operator of a construction activity with coverage under GP-0-10-001, as of the effective date of GP-0-15-002, shall be authorized to discharge in accordance with GP-0-15-002, unless otherwise notified by the Department. An owner or operator may continue to implement the technical/design components of the post-construction stormwater management controls provided that such design was done in conformance with the technical standards in place at the time of initial project authorization. However, they must comply with the other, non-design provisions of GP-0-15-002. E. Change of Owner or Operator 2. 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 notify the new owner or operator, in writing, of the requirement to obtain permit coverage by submitting a NOI with the Department. Once the new owner or operator obtains permit coverage, the original owneror operatorshall then submit a completed NOT with the name and permit identification number of the new owner or operator to the Department at the address in Part Ii.A.1 . of this permit. 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 Department receives a complete NOI, provided the original owner or operator was not subject to a sixty(60) business day authorization period that has not expired as of the date the Department receives the NOI from the new owner or operator. 17 (Part Ill) Part III. STORMWATER POLLUTION PREVENTION PLAN (SWPPP) A. General SWPPP Requirements 1. A SWPPP shall be prepared and implemented by the owner or operator of each construction activity covered by this permit. The SWPPP must document the selection, design, installation, implementation and maintenance of the control measures and practices that will be used to meet the effluent limitations in Part I.B. of this permit and where applicable, the post-construction stormwater management practice requirements in Part I.C. of this permit. The SWPPP shall be prepared prior to the submittal of the NOI. The NOI shall be submitted to the Department prior to the commencement of construction activity. A copy of the completed, final NOI shall be included in the SWPPP. 2, The SWPPP shall describe the erosion and sediment control practices and where required, post-construction stormwater management practices that will be used and/or constructed to reduce the pollutants in stormwater discharges and to assure compliance with the terms and conditions of this permit. In addition, the SWPPP shall identify potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges. 3. All SWPPPs that require the post-construction stormwater management practice component shall be prepared by a qualified professional that is knowledgeable in the principles and practices of stormwater management and treatment. 4. The owner or operator must keep the SWPPP current so that it at all times accurately documents the erosion and sediment controls practices that are being used or will be used during construction, and all post-construction stormwater management practices that will be constructed on the site. At a minimum, the owner or operator shall amend the SWPPP: a. whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharges from the site; 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, the Department or other regulatory authority. 5. The Department may notify the owner or operator at any time that the 18 (Part III.A.5) SWPPP does not meet one or more of the minimum requirements of this permit. The notification shall 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 the Department, the owner or operator shall make the required changes to the SWPPP and submit written notification to the Department that the changes have been made. If the owner or operator does not respond to the Department's comments in the specified time frame, the Department 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.C.4. of this permit. 6. Prior to the commencement of construction activity, the owner or operator must identify the contractor(s) and subcontractor(s) that will be responsible for installing, constructing, repairing, replacing, inspecting and maintaining the erosion and sediment control practices included in the SWPPP; and the contractor(s) and subcontractor(s) that will be responsible for constructing the post-construction stormwater management practices included in the SWPPP. The owner or operator shall have each of the contractors and subcontractors identify at least one person from their company that will be responsible for implementation of the SWPPP. 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 disturbance activities are being performed. The owner or operator shall have each of the contractors and subcontractors identified above sign a copy of the following certification statement below before they commence any construction activity: 1 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" 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 19 (Part III.A.6) 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 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. 7. For projects where the Department requests a copy of the SWPPP or inspection reports, the owner or operator shall submit the documents in both electronic (PDF only) and paper format within five (5) business days, unless otherwise notified by the Department. B. Required SWPPP Contents 1. Erosion and sediment control component - All SWPPPs prepared pursuant to this permit shall include erosion and sediment control practices designed in conformance with the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. Where erosion and sediment control practices are not designed in conformance with the design criteria included in the technical standard, the owner or operator must demonstrate equivalence to the technical standard. At a minimum, the erosion and sediment control component of the SWPPP shall include the following: a. Background information about the scope of the project, including the location, type and size of project; b. A site map/construction drawing(s) for the project, including a general location map. At a minimum, the site map shall 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); floodplainifloodway 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); c. A description of the soil(s) present at the site, including an identification of the Hydrologic Soil Group (HSG); d. A construction phasing plan and sequence of operations describing the intended order of construction activities, including clearing and grubbing, excavation and grading, utility and infrastructure installation and any other 20 (Part III.B.1.d) activity at the site that results in soil disturbance; e. 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; f. A temporary and permanent soil stabilization plan that meets the requirements of this general permit and the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005, for each stage of the project, including initial land clearing and grubbing to project completion and achievement of final stabilization; g. A site map/construction drawing(s) showing the specific location(s), size(s), and length(s) of each erosion and sediment control practice; h. 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 temporary sediment basins and structural practices that will be used to divert flows from exposed soils; i. A maintenance inspection schedule for the contractor(s) identified in Part III.A.6, of this permit, to ensure continuous and effective operation of the erosion and sediment control practices. The maintenance inspection schedule shall be in accordance with the requirements in the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005; j. 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; k. 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 1. Identification of any elements of the design that are not in conformance with the design criteria in the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. Include the reason for the deviation or alternative design 21 (Part IIl.B.1.1) and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. Post-construction stormwater management practice component — The owner or operator of any construction project identified in Table 2 of Appendix B as needing post-construction stormwater management practices shall prepare a SWPPP that includes practices designed in conformance with the applicable sizing criteria in Part I.C.2.a., c. or d. of this permit and the performance criteria in the technical standard, New York State Stormwater Management Design Manual dated January 2015 Where post-construction stormwater management practices are not designed in conformance with the performance criteria in the technical standard, 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. The post-construction stormwater management practice component of the SWPPP shall include the following: a. Identification of all post-construction stormwater management practices to be constructed as part of the project. Include the dimensions, material specifications and installation details for each post-construction stormwater management practice; b. A site map/construction drawing(s) showing the specific location and size of each post-construction stormwater management practice; c. A Stormwater Modeling and Analysis Report that includes: (i) Map(s) showing pre-development conditions, including watershedlsubcatchments boundaries, flow paths/routing, and design points; (ii) Map(s) showing post-development conditions, including watershedlsubcatchments boundaries, flow paths/routing, design points and post--construction stormwater management practices; (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; (iv) Summary table, with supporting calculations, which demonstrates 22 (Part III.B.2.c.iv) that each post-construction stormwater management practice has been designed in conformance with the sizing criteria included in the Design Manual; (v) Identification of any sizing criteria that is not required based on the requirements included in Part I.C. of this permit; and (vi) Identification of any elements of the design that are not in conformance with the performance criteria in the Design Manual. 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 Design Manual; d. Soil testing results and locations (test pits, borings); e. Infiltration test results, when required; and f. An operations and maintenance plan that includes inspection and maintenance schedules and actions to ensure continuous and effective operation of each post-construction stormwater management practice. The plan shall identify the entity that will be responsible for the long term operation and maintenance of each practice. 3. Enhanced Phosphorus Removal Standards - All construction projects identified in Table 2 of Appendix B that are located in the watersheds identified in Appendix C shall prepare a SWPPP that includes post- construction stormwater management practices designed in conformance with the applicable sizing criteria in Part I.C.2. b., c. or d, of this permit and the performance criteria, Enhanced Phosphorus Removal Standards included in the Design Manual. At a minimum, the post-construction stormwater management practice component of the SWPPP shall include items 2.a - 2.f. above. C. Required SWPPP Components by Project Type Unless otherwise notified by the Department, 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 conformance with Part I I I.B.1 of this permit. Owners or operators of the construction activities identified in Table 2 of Appendix B shall prepare a SWPPP that also includes post-construction stormwater management practices designed in conformance with Part III.B.2 or 3 of this permit. 23 (Part IV) 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 post- construction stormwater management practices identified in the SWPPP are inspected and maintained in accordance with Part IV.B. and C. of this permit. 2. The terms of this permit shall not be construed to prohibit the State of New York from exercising any authority pursuant to the ECL, common law or federal law, or prohibit New York State from taking any measures, whether civil or criminal, to prevent violations of the laws of the State of New York, or protect the public health and safety and/or the environment. B. Contractor Maintenance Inspection Requirements 1. The owner or operator of each construction activity identified in Tables 1 and 2 of Appendix B shall have a trained contractor inspect the erosion and sediment control practices and pollution prevention measures being 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 shall begin implementing corrective actions within one business day and shall complete the corrective actions in a reasonable time frame. 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. The trained contractor shall begin conducting the maintenance inspections in accordance with Part IV.13.1 . of this permit 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 if all areas disturbed as of the project shutdown date have achieved final stabilization and all post-construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. C. Qualified Inspector Inspection Requirements 24 (Part IV.C) The owner or operator shall have a qualified inspector conduct site inspections in conformance with the following requirements: [Note: The trained contractor identified in Part III.A.6. and IV.B, of this permit cannot conduct the qualified inspector site inspections unless they meet the qualified inspector qualifications included in Appendix A. In orderto perform these inspections, the trained contractor would have to be a: - licensed Professional Engineer, - Certified Professional in Erosion and Sediment Control (CPESC), - Registered Landscape Architect, or - someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received 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]. 1. A qualified inspector shall conduct site inspections for all construction activities identified in Tables 1 and 2 of Appendix B, with the exception of: 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 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 E; b. the construction of a single family home that involves a soil disturbance of one (1) or more acres of land but less than 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 E; c. construction on agricultural property that involves a soil disturbance of one (1) or more acres of land but less than five (5) acres; and d. construction activities located in the watersheds identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. 2. Unless otherwise notified by the Department, the qualified inspector shall conduct site inspections in accordance with the following timetable: a. For construction sites where soil disturbance activities are on-going, the qualified inspector shall conduct a site inspection at least once every seven (7) calendar days. b. For construction sites where soil disturbance activities are on-going and 25 (Part IV.C.2.b) the owner or operator has received authorization in accordance with Part II.C.3 to disturb greater than five (5) acres of soil at any one time, the qualified inspector shall conduct at feast two (2) site inspections every seven (7) calendar days. The two (2) inspections shall be separated by a minimum of two (2) full calendar days. 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 shall conduct a site inspection at least once every thirty (30) calendar days. The owner or operator shall notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix F) or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the regulated, traditional land use control MS4 (provided the regulated, traditional land use control MS4 is not the owner or operator of the construction activity) in writing prior to reducing the frequency of inspections. d. For construction sites where soil disturbance activities have been shut down with partial project completion, the qualified inspector can stop conducting inspections if all areas disturbed as of the project shutdown date have achieved final stabilization and all post-construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. The owner or operator shall notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix F) or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the regulated, traditional land use control MS4 (provided the regulated, traditional land use control MS4 is not the owner or operator of the construction activity) in writing prior to the shutdown. If soil disturbance activities are not resumed within 2 years from the date of shutdown, the owner or operator shall have the qualified inspector perform a final inspection and certify that all disturbed areas have achieved final stabilization, and all temporary, structural erosion and sediment control measures have been removed; and that all post-construction stormwater management practices have been constructed in conformance with the SWPPP by signing the "Final Stabilization" and "Post-Construction Stormwater Management Practice" certification statements on the NOT. The owner or operator shall then submit the completed NOT form to the address in Part II.A.1 of this permit. e. For construction sites that directly discharge to one of the 303(d) segments listed in Appendix E or is located in one of the watersheds listed in Appendix C, the qualified inspector shall conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections shall 26 (Part IV.C.2.e) be separated by a minimum of two (2) full calendar days. 3. At a minimum, the qualified inspector shall inspect all erosion and sediment control practices and pollution prevention measures 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. The qualified inspector shall prepare an inspection report subsequent to each and every inspection. At a minimum, the inspection report shall include and/or address the following: a. Date and time of inspection; b. Name and title of person(s) performing inspection; c. A description of the weather and soil conditions (e.g. dry, wet, saturated) at the time of the inspection; d. A description of the condition of the runoff at all points of discharge from the construction site. This shall 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; e. A description of the condition of all natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site which receive runoff from disturbed areas. This shall include identification of any discharges of sediment to the surface waterbody; f. Identification of all erosion and sediment control practices and pollution prevention measures that need repair or maintenance; g. 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; h. Description and sketch 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; 27 (Part IV.C.4.i) L Current phase of construction of all post-construction stormwater management practices and identification of all construction that is not in conformance with the SWPPP and technical standards; j. 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 post-construction stormwater management practice(s); k. Identification and status of all corrective actions that were required by previous inspection; and I. 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 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. 5. Within one business day of the completion of an inspection, the qualified inspector shall notify the owner or operator and appropriate contractor or subcontractor identified in Part IIl.A.6. of this permit of any corrective actions that need to be taken. The contractor or subcontractor shall begin implementing the corrective actions within one business day of this notification and shall complete the corrective actions in a reasonable time frame. 6. All inspection reports shall be signed by the qualified inspector. Pursuant to Part II.C.2. of this permit, the inspection reports shall be maintained on site with the SWPPP. Part V. TERMINATION OF PERMIT COVERAGE A. Termination of Permit Coverage 1. An owner or operator that is eligible to terminate coverage under this permit must submit a completed NOT form to the address in Part II.A.1 of this permit. The NOT form shall be one which is associated with this permit, signed in accordance with Part VII.H of this permit. 28 (Part V.A.2) 2. An owner or operator may terminate coverage when one or more the following conditions have been met: a. Total project completion - All construction activity identified in the SWPPP has been completed; and all areas of disturbance have achieved final stabilization; and all temporary, structural erosion and sediment control measures have been removed; and all post-construction stormwater management practices have been constructed in conformance with the SWPPP and are operational; b. Planned shutdown with partial project completion - All soil disturbance activities have ceased; and all areas disturbed as of the project shutdown date have achieved final stabilization; and all temporary, structural erosion and sediment control measures have been removed; and all post- construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational; c. A new owner or operator has obtained coverage under this permit in accordance with Part II.E. of this permit. d. The owner or operator obtains coverage under an alternative SPDES general permit or an individual SPDES permit. 3. For construction activities meeting subdivision 2a. or 2b. of this Part, the owner or operator shall have the qualified inspector perform a final site inspection prior to submitting the NOT. The qualified inspector shall, by signing the "Final Stabilization" and "Post-Construction Stormwater Management Practice certification statements on the NOT, certify that all the requirements in Part V.A.2.a. or b. of this permit have been achieved. 4. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4 and meet subdivision 2a. or 2b. of this Part, the owner or operator shall have the regulated, traditional land use control MS4 sign the "MS4 Acceptance" statement on the NOT in accordance with the requirements in Park VII.H. of this permit. The regulated, traditional land use control MS4 official, by signing this statement, has determined that it is acceptable for the owner or operator to submit the NOT in accordance with the requirements of this Part. The regulated, traditional land use control MS4 can make this determination by performing a final site inspection themselves or by accepting the qualified inspector=s final site inspection certification(s) required in Part V.A.3. of this permit. 29 (Part V.A.5) 5. For construction activities that require post-construction stormwater management practices and meet subdivision 2a. of this Part, the owner or operator must, prior to submitting the NOT, ensure one of the following: a. the post-construction stormwater management practice(s) and any right- of-way(s) needed to maintain such practice(s) have been deeded to the municipality in which the practice(s) is located, b. an executed maintenance agreement is in place with the municipality that will maintain the post-construction stormwater management practice(s), c. for post-construction stormwater management practices 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, d. for post-construction stormwater management practices 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 policy and procedures in place that ensures operation and maintenance of the practices in accordance with the operation and maintenance plan. Part VI. REPORTING AND RETENTION OF RECORDS A. Record Retention The owner or operator shall retain a copy of the NOI, NO[ Acknowledgment Letter, SWPPP, MS4 SWPPP Acceptance form and any inspection reports that were prepared in conjunction with this permit for a period of at least five (5) years from the date that the Department receives a complete NOT submitted in accordance with Part V. of this general permit. B. Addresses With the exception of the NOI, NOT, and MS4 SWPPP Acceptance form (which must be submitted to the address referenced in Part II.A.1 of this permit), all written correspondence requested by the Department, including individual permit applications, shall be sent to the address of the appropriate DOW Water (SPDES) Program contact at the Regional Office listed in Appendix F. 30 (Part VII) Part VII. STANDARD PERMIT CONDITIONS A. Duty to Comply The owner or operator must comply with all conditions of this permit. All contractors and subcontractors associated with the project must comply with the terms of the SWPPP. Any non-compliance with this permit constitutes a violation of the Clean Water Act (CWA) and the ECL and is grounds for an enforcement action against the owner or operator and/or the contractor/subcontractor; permit revocation, suspension or modification; or denial of a permit renewal application. Upon a finding of significant non-compliance with this permit or the applicable SWPPP, the Department may order an immediate stop to all construction activity at the site until the non-compliance is remedied. The stop work order shall be in writing, shall describe the non-compliance in detail, and shall be sent to the owner or operator. 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). Construction activity shall not resume until written permission to do so has been received from the RWE. B. Continuation of the Expired General Permit This permit expires five (5) years from the effective date. If a new general permit is not issued prior to the expiration of this general permit, an owner or operator with coverage under this permit may continue to operate and discharge in accordance with the terms and conditions of this general permit, if it is extended pursuant to the State Administrative Procedure Act and 6 NYCRR Part 621 , until a new general permit is issued. C. Enforcement Failure of the owner or operator, its contractors, subcontractors, agents and/or assigns to strictly adhere to any of the permit requirements contained herein shall constitute a violation of this permit. There are substantial criminal, civil, and administrative penalties associated with violating the provisions of this permit. Fines of up to $37,506 per day for each violation and imprisonment for up to fifteen (15) years may be assessed depending upon the nature and degree of the offense. D. Need to Halt or Reduce Activity Not a Defense It shall not be a defense for an owner or operator in an enforcement action that it would have been necessary to halt or reduce the construction activity in order to maintain compliance with the conditions of this permit. 31 (Part VILE) E. Duty to Mitigate The owner or operator and its contractors and subcontractors shall 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. F. Duty to Provide Information The owner or operator shall furnish to the Department, within a reasonable specified time period of a written request, all documentation necessary to demonstrate eligibility and any information to determine compliance with this permit or to determine whether cause exists for modifying or revoking this permit, or suspending or denying coverage under this permit, in accordance with the terms and conditions of this permit. The NOI, SWPPP 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 (5) 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. G. Other Information When the owner or operator becomes aware that they failed to submit any relevant facts, or submitted incorrect information in the NOI or in any of the documents required by this permit , or have made substantive revisions to the SWPPP (e.g. the scope of the project changes significantly, the type of post-construction stormwater management practice(s) changes, there is a reduction in the sizing of the post- construction stormwater management practice, or there is an increase in the disturbance area or impervious area), which were not reflected in the original NOI submitted to the Department, they shall promptly submit such facts or information to the Department using the contact information in Part ILA, of this permit. Failure of the owner or operator to correct or supplement any relevant facts within five (5) business days of becoming aware of the deficiency shall constitute a violation of this permit. H. Signatory Requirements 1. All NOls and NOTs shall be signed as follows: a. For a corporation these forms shall be signed 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 32 (Part VIl.H.1.a.i) 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 permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship these forms shall be signed by a general partner or the proprietor, respectively; or c. Fora municipality, State, Federal, or other public agency these forms shall be signed by either a principal executive officer or ranking elected official. For purposes of this section, a principal executive officer of a Federal agency includes: (i) the chief executive officer of the agency, or (ii) 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. The SWPPP and other information requested by the Department shall be signed by a person described in Part VII.H.1. of this permit or by a duly 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.H.1 . of this permit; b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity, such as the position of plant manager, operator of a well or a well field, superintendent, 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 33 (Part VII.H.2.b) individual or any individual occupying a named position) and, c. The written authorization shall include the name, title and signature of the authorized representative and be attached to the SWPPP. 3. All inspection reports shall be signed by the qualified inspector that performs the inspection. 4. The MS4 SWPPP Acceptance form shall be 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. It shall constitute a permit violation if an incorrect and/or improper signatory authorizes any required forms, SWPPP and/or inspection reports. I. Property Rights The issuance of this permit does not convey any property rights of any sort, nor any exclusive privileges, nor does it authorize any injury to private property nor any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations. Owners or operators must obtain any applicable conveyances, easements, licenses and/or access to real property prior to commencing construction activity. J. 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 shall not be affected thereby. K. Requirement to Obtain Coverage Under an Alternative Permit 1. The Department may require any owner or operator authorized by this permit to apply for and/or obtain either an individual SPDES permit or another SPDES general permit. When the Department requires any discharger authorized by a general permit to apply for an individual SPDES permit, it shall notify the discharger in writing that a permit application is required. This notice shall include a brief statement of the reasons for this decision, an application form, a statement setting a time frame for the owner or operator to file the application for an individual SPDES permit, and a deadline, not sooner than 180 days from owner or operator receipt of the notification letter, whereby the authorization to 34 (Part VII.KA) discharge under this general permit shall be terminated. Applications must be submitted to the appropriate Permit Administrator at the Regional Office. The Department may grant additional time upon demonstration, to the satisfaction of the Department, that additional time to apply for an alternative authorization is necessary or where the Department has not provided a permit determination in accordance with Part 621 of this Title. 2. When an individual SPDES permit is issued to a discharger authorized to discharge under a general SPDES permit for the same discharge(s), the general permit authorization for outfalls authorized under the individual SPDES permit is automatically terminated on the effective date of the individual permit unless termination is earlier in accordance with 6 NYCRR Part 750. L. Proper Operation and Maintenance The owner or operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the owner or operator to achieve compliance with the conditions of this permit and with the requirements of the SWPPP. M. Inspection and Entry The owner or operator shall allow an authorized representative of the Department, EPA, applicable county health department, 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 conditions of this permit; 2. Have access to and copy at reasonable times, any records that must be kept under the conditions of this permit; and 3. Inspect at reasonable times any facilities or equipment(including monitoring and control equipment), practices or operations regulated or required by this permit. 4. Sample or monitor at reasonable times, for purposes of assuring permit compliance or as otherwise authorized by the Act or ECL, any substances or parameters at any location. 35 (Part VII.N) N. Permit Actions This permit may, at any time, be modified, suspended, revoked, or renewed by the Department in accordance with 6 NYCRR Part 621 . The filing of a request by the owner or operator for a permit modification, revocation and reissuance, termination, a notification of planned changes or anticipated noncompliance does not limit, diminish and/or stay compliance with any terms of this permit. O. Definitions Definitions of key terms are included in Appendix A of this permit. P. Re-Opener Clause 1, If there is evidence indicating potential or realized impacts on water quality due to any stormwater discharge associated with construction activity covered by this permit, the owner or operator of such discharge may be required to obtain an individual permit or alternative general permit in accordance with Part VII.K. of this permit or the permit may be modified to include different limitations and/or requirements. 2. Any Department initiated permit modification, suspension or revocation will be conducted in accordance with 6 NYCRR Part 621, 6 NYCRR 750-1 .18, and 6 NYCRR 750-1.20. Q. Penalties for Falsification of Forms and Reports In accordance with 6NYCRR Part 750-2.4 and 750-2.5, any person who knowingly makes any false material statement, representation, or certification in any application, record, report or other document filed or required to be maintained under this permit, including reports of compliance or noncompliance shall, upon conviction, be punished in accordance with PCL §71-1933 and or Articles 175 and 210 of the New York State Penal Law. R. Other Permits Nothing in this permit relieves the owner or operator from a requirement to obtain any other permits required by law. 36 APPENDIX A Definitions Alter Hydrology from Pre to Post-Development Conditions - means 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- means a sewer that is designed to collect and convey both "sewage" and "stormwater". Commence (Commencement of) Construction Activities - means 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. Construction Activity(ies) - means any clearing, grading, excavation, filling, demolition or stockpiling activities that result in soil disturbance. Clearing activities can include, but are not limited to, logging equipment operation, the cutting and skidding of trees, 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. Direct Discharge (to a specific surface waterbody) - means that 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) - means any addition of any pollutant to waters of the State through an outlet or point source. Environmental Conservation Law (ECL) - means chapter 43-B of the Consolidated Laws of the State of New York, entitled the Environmental Conservation Law. Equivalent (Equivalence) — means that 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 - means that all soil disturbance activities have ceased and a uniform, perennial vegetative cover with a density of eighty (80) percent over the entire pervious surface has been established; or other equivalent stabilization measures, such as permanent landscape mulches, rock rip--rap or washed/crushed stone have been applied 37 on all disturbed areas that are not covered by permanent structures, concrete or pavement. General SPDES permit - means a SPDES permit issued pursuant to 0 NYCRR Part 750- 1 .21 and Section 70-0117 of the ECL authorizing a category of discharges. Groundwater(s) - means waters in the saturated zone. The saturated zone is a subsurface zone in which all the interstices are filled with water under pressure greater than that of the atmosphere. Although the zone may contain gas-filled interstices or interstices filled with fluids other than water, it is still considered saturated. Historic Property— means 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) - means all impermeable surfaces that cannot effectively infiltrate rainfall. This includes paved, concrete and gravel surfaces (i.e. parking lots, driveways, roads, runways and sidewalks), building rooftops and miscellaneous impermeable structures such as patios, pools, and sheds. Infeasible — means not technologically possible, or not economically practicable and achievable in light of best industry practices. Larger Common Plan of Development or Sale - means a contiguous area where multiple separate and distinct construction activities are occurring, or will occur, under one plan. The term "plan" in "larger 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 (SEQRA) environmental assessment form or other documents, zoning request, computer design, etc.) or physical demarcation (including boundary signs, lot stakes, surveyor markings, etc.) indicating that construction activities may occur on a specific plot. For discrete construction projects that are located within a larger common plan of development or sale that are at least 114 mile apart, each project can be treated as a separate plan of development or sale provided any interconnecting road, pipeline or utility project that is part of the same "common plan" is not concurrently being disturbed. Minimize — means 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 (MS4) - a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, 38 ditches, man-made channels, or storm drains): (i) Owned or operated by a State, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the CWA that discharges to surface waters of the State,- (ii) Designed or used for collecting or conveying stormwater; (iii) Which is not a combined sewer; and (iv) Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2. National Pollutant Discharge Elimination System (NPDES) - means the national system for the issuance of wastewater and stormwater permits under the Federal Water Pollution Control Act (Clean Water Act). New Development— means any land disturbance that does meet the definition of Redevelopment Activity included in this appendix. NOI Acknowledgment Letter - means the letter that the Department sends to an owner or operator to acknowledge the Department's receipt and acceptance of a complete Notice of Intent. This letter documents the owner's or operator's authorization to discharge in accordance with the general permit for stormwater discharges from construction activity. Owner or Operator - means the person, persons or legal entity which owns or leases the property on which the construction activity is occurring; and/or an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications. Performance Criteria — means the design criteria listed under the "Required Elements" sections in Chapters 5, 6 and 10 of the technical standard, New York State Stormwater Management Design Manual, dated January 2015. It does not include the Sizing Criteria (i.e. WQv, RRv, Cpv, Qp and Of ) in Part I.C.2. of the permit. Pollutant - means 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 . 39 Qualified Inspector - means a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or other Department endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. Note: Inspections of any post-construction stormwater management practices that include structural components, such as a dam for an impoundment, shall be performed by a licensed Professional Engineer. Qualified Professional - means 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 Department endorsed individual(s). Individuals preparing SWPPPs that require the post-construction stormwater management practice component must have an understanding of the principles of hydrology, water quality management practice design, water quantity control design, and, in many cases, the principles of hydraulics. All components of the SWPPP that involve the practice of engineering, as defined by the NYS Education Law (see Article 145), shall be prepared by, or under the direct supervision of, a professional engineer licensed to practice in the State of New York.. Redevelopment Activity(ies) — means 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.). Regulated, Traditional Land Use Control MS4 - means a city, town or village with land use control authority that is required to gain coverage under New York State DEC's SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (MS4s). 40 Routine Maintenance Activity - means construction activity that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility, including, but not limited to: - Re-grading of gravel roads or parking lots, - Stream bank restoration projects (does not include the placement of spoil material), Cleaning and shaping of existing roadside ditches and culverts that maintains the approximate original line and grade, and hydraulic capacity of the ditch, - 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), - Placement of aggregate shoulder backing that makes the transition between the road shoulder and the ditch or embankment, - 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, - Long-term use of equipment storage areas at or near highway maintenance facilities, - 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, - Existing use of Canal Corp owned upland disposal sites for the canal, and - Replacement of curbs, gutters, sidewalks and guide rail posts. Site limitations — means site conditions that prevent the use of an infiltration technique and or infiltration of the total WQv. Typical site limitations include: seasonal high 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 — means the criteria included in Part I.C.2 of the permit that are used to size post-construction stormwater management control practices. The criteria include; Water Quality Volume (WQv), Runoff Reduction Volume (RRv), Channel Protection Volume (Cpv), Overbank Flood (Qp), and Extreme Flood (Qf). State Pollutant Discharge Elimination System (SPDES) - means the system established pursuant to Article 17 of the ECL and 6 NYCRR Part 750 for issuance of permits authorizing discharges to the waters of the state. Steep Slope — means land area with a Soil Slope Phase that is identified as an E or F, or 41 the map unit name is inclusive of 25% or greater slope, on the United States Department of Agriculture ("USDA") Soil Survey for the County where the disturbance will occur. 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 — means that an existing disturbed area will not be disturbed again within 14 calendar days of the previous soil disturbance. Temporary Stabilization - means that exposed soil has been covered with material(s) as set forth in the technical standard, New York Standards and Specifications for Erosion and Sediment Control, to prevent the exposed soil from eroding. The materials can include, but are not limited to, mulch, seed and mulch, and erosion control mats (e.g. jute twisted yarn, excelsior wood fiber mats). Total Maximum Daily Loads (TMDLs) - A TMDL is 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 on a daily basis and still meet wafer quality standards, and an allocation of that amount to the pollutant's sources. A TMDL stipulates wasteload allocations (WLAs) for point source discharges, load allocations (LAs) for nonpoint sources, and a margin of safety (MOS). Trained Contractor - means an employee from the contracting (construction) company, identified in Part Ili.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. 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.6., that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received 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). The trained contractor is responsible for the day to day implementation of the SWPPP. Uniform Procedures Act (UPA) Permit - means a permit required under 6 NYCRR Part 42 621 of the Environmental Conservation Law (ECL), Article 70. Water Quality Standard - means 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. 43 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 or not directly discharging to one of the 303(4) segments listed in Appendix E • 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 E • Construction of a barn or other agricultural building, silo, stock yard or pen. The following construction activities that involve soil disturbances of one(1) or more acres of land: • Installation of underground, linear utilities; such as gas lines, fiber-optic cable, cable TV, electric, telephone, sewer mains, and water mains • Environmental enhancement projects, such as wetland mitigation projects, stormwater retrofits and stream restoration projects • Bike paths and trails • Sidewalk construction projects that are not part of a road/highway construction or reconstruction project • Slope stabilization projects • 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 • Land clearing and grading for the purposes of creating vegetated open space (i.e, recreational parks, lawns, meadows, fields), excluding projects that 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 project where vegetation will be established and no redevelopment is planned • Overhead electric transmission line project that does not include the construction of permanent access roads or parking areas surfaced with impervious cover • Structural practices as identified in Table II in the"Agricultural Management Practices Catalog for Nonpoint Source Pollution in New York State", excluding projects that involve soil disturbances of less than five acres and construction activities that include the construction or reconstruction of impervious area 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 watersheds identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. 44 Table: 2 CONSTRUCTION/ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES The following construction activities that involve soil disturbances of one(T) or more acres of land: • 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 E • 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 E • 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 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 larger common plan of development or sale that will ultimately disturb five or more acres of land • Multi-family residential developments; includes townhomes, condominiums, senior housing complexes, apartment complexes, and mobile home parks • Airports • Amusement parks • 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) and structural practices as identified in Table II in the"Agricultural Management Practices Catalog for Nonpoint Source Pollution in New York State" that include the construction or reconstruction of impervious area, excluding projects that involve soil disturbances of less than five acres. • Golf courses • Institutional, includes hospitals, prisons, schools and colleges • Industrial facilities, includes industrial parks • Landfills • Municipal facilities; includes highway garages, transfer stations, office buildings, POTW's and water treatment plants • Office complexes • Sports complexes • Racetracks, includes racetracks with earthen (dirt) surface • Road construction or reconstruction • Parking lot construction or reconstruction • 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 over-head electric transmission line project , wind-power project, cell tower project, oil or gas well drilling project, sewer or water main project or other linear utility project • 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 L—Table-1 45 APPENDIX C Watersheds Where Enhanced Phosphorus Removal Standards Are Required Watersheds where owners or operators of construction activities identified in Table 2 of Appendix B must prepare a SWPPP that includes post-construction stormwater management practices designed in conformance with the Enhanced Phosphorus Removal Standards included in the technical standard, New York State Stormwater Management Design Manual ("Design Manual"). • 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 46 Figure 1 - New York City Watershed East of the Hudson EEKMAN EAST FISHKILL t PAW! LIN . TTERSON A KENT PUT AM VALLE SOUTHEAST CARMEL B STEfit N RTH SALEM SOfv�ER� COR A T UVISI�Q�C�. . RKTOVII EDFORD O. RIDO lI1C?UN K C W RTH CAST M U LEASAN T3 HA SON EOH Watershed 47 Figure 2 - Onondaga Lake Watershed L CLAY CICERO US VAN BUREN NO H � LI QL SAUNACo. 'WIN .: US Lf EAST S E A11fiUS G DD iBRI DG SYR"" U, DEWITT A ELLUS SKAN ATE4 ONS} ![ AA LA "FAYE7.7 E OTISCC3 PAFF D e� [� Ph sphorus Wate s e REBLE 48 Figure 3 - Greenwood Lake Watershed WARWICK . . _ GREENWOOD LAKE Phosphorus Watershed 49 Figure 4 - Oscawana Lake Watershed PHILIPSTOWN I`KENT PUTNAM VALLEY OSCAWANALAKE 1 rf/ EE1 ! E ;CARMEL Phosphorus Watershed I 1 50 Figure 5: Kinderhook Lake Watershed SAND LAKE EAST GREENBUSH f J, i r Jr fe 2 �1 3f p F SCHODACK 7 'h l F f J k ' a IEW LEBANON a KINDERHOO CHATHAM F CANAAN \A LAT'IE:.. Town,Village,or C!ety Boundary for New York State 2 4 Wes Kinderhock Lake Watershed 51 APPENDIX D Watersheds where owners or operators of construction activities that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land must obtain coverage under this permit. Entire New York City Watershed that is located east of the Hudson River - See Figure I in Appendix C 52 APPENDIX E List of 303(d) segments impaired by pollutants related to construction activity(e.g. silt, sediment or nutrients). Owners or operators of single family home and single family residential subdivisions with 25% or less total impervious cover at total site build-out that involve soil disturbances of one or more acres of land, but less than 5 acres, and directly discharge to one of the listed segments below shall prepare a SWPPP that includes post-construction stormwater management practices designed in conformance with the New York State Stormwater Management Design Manual ("Design Manual"), dated January 2015. COUNTY WATERBODY _ COUNTY WATERBODY Albany Ann Lee(Shakers) Pond, Stump Pond Greene Sleepy Hollow Lake Albany Basic Creek Reservoir Herkimer Steele Creek tribs Allegheny Amity Lake, Saunders Pond Kings Hendrix Creek Bronx Van Cortlandt Lake Lewis Mill Creek/South Branch and tribs Broome Whitney Point Lake/Reservoir Livingston Conesus Lake Broome Fly Pond, Deer Lake Livingston Jaycox Creek and tribs Broome Minor Tribs to Lower Susquehanna Livingston Mill Creek and minor tribs (north) Livingston Bradner Creek and tribs Cattaraugus Allegheny River/Reservoir Livingston Christie Creek and tribs Cattaraugus Case Lake Monroe Lake Ontario Shoreline,Western Cattaraugus Linlyco/Club Pond Monroe Mill Creek/Blue Pond Outlet and tribs Cayuga Duck Lake Monroe Rochester Embayment- East Chautauqua Chautauqua Lake, North Monroe Rochester Embayment-West Chautauqua Chautauqua Lake, South Monroe Unnamed Trib to Honeoye Creek Chautauqua Bear Lake Monroe Genesee River, Lower, Main Stem Chautauqua Chadakoin River and tribs Monroe Genesee River, Middle, Main Stem Chautauqua Lower Cassadaga Lake Monroe Black Creek, Lower,and minor tribs Chautauqua Middle Cassadaga Lake Monroe Buck Pond Chautauqua Findley Lake Monroe Long Pond Clinton Great Chazy River, Lower, Main Stem Monroe Cranberry Pond Columbia Kinderhook Lake Monroe Mill Creek and tribs Columbia Robinson Pond Monroe Shipbuilders Creek and tribs Dutchess Hillside Lake Monroe Minor tribs to Irondequoit Bay Dutchess Wappinger Lakes Monroe Thomas Creek0hite Brook and tribs Dutchess Fall Kill and tribs Nassau Glen Cove Creek, Lower, and tribs Erie Green Lake Nassau LI Tribs(fresh)to East Bay Erie Scajaquada Creek, Lower, and tribs Nassau East Meadow Brook, Upper, and tribs Erie Scajaquada Creek, Middle, and tribs Nassau Hempstead Bay Erie Scajaquada Creek, Upper,and tribs Nassau Hempstead Lake Erie Rush Creek and tribs Nassau Grant Park Pond Erie Ellicott Creek, Lower, and tribs Nassau Beaver Lake Erie Beeman Creek and trios Nassau Camaans Pond Erie Murder Creek, Lower, and tribs Nassau Halls Pond Erie South Branch Smoke Cr, Lower, and Nassau LI Tidal Tribs to Hempstead Bay tribs Nassau Massapequa Creek and tribs Erie Little Sister Creek, Lower, and tribs Nassau Reynolds Channel, east Essex Lake George(primary county, Warren) Nassau Reynolds Channel,west Genesee Black Creek, Upper, and minor tribs Nassau Silver Lake, Lofts Pond Genesee Tonawanda Creek, Middle, Main Stem Nassau Woodmere Channel Genesee Oak Orchard Creek, Upper, and tribs Niagara Hyde Park Lake Genesee Bowen Brook and tribs Niagara Lake Ontario Shoreline,Western Genesee Bigelow Creek and tribs Niagara Bergholtz Creek and tribs Genesee Black Creek, Middle, and minor tribs Oneida Ballou, Nail Creeks Genesee LeRoy Reservoir Onondaga Ley Creek and trios Greene Schoharie Reservoir Onondaga Onondaga Creek, Lower and trios 53 APPENDIX E List of 303(d) segments unpaired by pollutants related to construction activity, cont'd. COUNTY WATERBODY COUNTY WATERBODY Onondaga Onondaga Creek, Middle and tribs Suffolk Great South Bay,West Onondaga Onondaga Creek, Upp, and minor tribs Suffolk Mill and Seven Ponds Onondaga Harbor Brook, Lower, and tribs Suffolk Moriches Bay, East Onondaga Ninemile Creek, Lower, and tribs Suffolk Moriches Bay,West Onondaga Minor tribs to Onondaga Lake Suffolk Quantuck Bay Onondaga Onondaga Creek, Lower, and Cribs Suffolk Shinnecock Bay(and Inlet) Ontario Honeoye Lake Sullivan Bodine, Montgomery Lakes Ontario Hemlock Lake Outlet and minor tribs Sullivan Davies Lake Ontario Great Brook and minor tribs Sullivan Pleasure Lake Orange Monhagen Brook and tribs Sullivan Swan Lake Orange Orange Lake Tompkins Cayuga Lake, Southern End Orleans Lake Ontario Shoreline,Western Tompkins Owasco Inlet, Upper,and tribs Oswego Pleasant Lake Ulster Ashokan Reservoir Oswego Lake Neatahwanta Ulster Esopus Creek, Upper, and minor Putnam Oscawana Lake tribs Putnam Palmer Lake Ulster Esopus Creek, Lower, Main Stem Putnam Lake Carmel Ulster Esopus Creek, Middle,and minor Queens Jamaica Bay, Eastern, and tribs(Queens) tribs Queens Bergen Basin Warren Lake George Queens Shellbank Basin Warren Tribs to L.George, Village of L Rensselaer Nassau Lake George Rensselaer Snyders Lake Warren Huddle/Finkle Brooks and tribs Richmond Grasmere,Arbutus and Wolfes Lakes Warren Indian Brook and trios Rockland Congers Lake, Swartout Lake Warren Hague Brook and tribs Rockland Rockland Lake Washington Tribs to L.George, East Shr Lk Saratoga Ballston Lake George Saratoga Round Lake Washington Cossayuna Lake Saratoga Dwaas Kill and tribs Washington Wood CrlChamplain Canal, minor Saratoga Tribs to Lake Lonely tribs Saratoga Lake Lonely Wayne Port Bay Schenectady Collins Lake Wayne Marbletown Creek and tribs Schenectady Duane Lake Westchester Lake Katonah Schenectady Mariaville Lake Westchester Lake Mohegan Schoharie Engleville Pond Westchester Lake Shenorock Schoharie Summit Lake Westchester Reservoir No.1 (Lake Isle) Schuyler Cayuta Lake Westchester Saw Mill River, Middle, and tribs St. Lawrence Fish Creek and minor tribs Westchester Silver Lake St. Lawrence Black Lake Outlet/Black Lake Westchester Teatown Lake Steuben Lake Salubria Westchester Truesdale Lake Steuben Smith Pond Westchester Wallace Pond Suffolk Millers Pond Westchester Peach Lake Suffolk Mattituck(Marratooka) Pond Westchester Mamaroneck River, Lower Suffolk Tidal tribs to West Moriches Bay Westchester Mamaroneck River, Upp, and tribs Suffolk Canaan Lake Westchester Sheldrake River and tribs Suffolk Lake Ronkonkoma Westchester Blind Brook, Lower Suffolk Beaverdam Creek and trios Westchester Blind Brook, Upper, and tribs Suffolk Big/Little Fresh Ponds Westchester Lake Lincolndale Suffolk Fresh Pond Westchester Lake Meahaugh Suffolk Great South Bay, East Wyoming Java Lake Suffolk Great South Bay, Middle Wyoming Silver Lake Note: The list above identifies those waters from the final New York State "2014 Section 303(d) List of Impaired Waters Requiring a TMDL/Other Strategy", dated January 2015, that are impaired by silt, sediment or nutrients. 54 APPENDIX F LIST OF NYS DEC REGIONAL OFFICES Region COVERING THE DIVISION OF DIVISION OF WATER FOLLOWING ENVIRONMENTAL (DOW) COUNTIES: PERMITS (DEP) PERMIT ADMINISTRATORS WATER(SPDES) PROGRAM 1 NASSAU AND SUFFOLK 50 CIRCLE ROAD 50 CIRCLE ROAD STONY BROOK,NY 11790 STONY BROOK,NY 11790-3409 TEL.(631)444-0365 TEL.(631)444-0405 2 BRONX,KINGS,NEW YORK, 1 HUNTERS POINT PLAZA, 1 14UNTERS POINT PLAZA, QUEENS AND RICHMOND 47-40 21 ST ST. 47-40 21ST ST. LONG ISLAND CITY,NY 11101-5407 LONG ISLAND CITY,NY 1110'1-5407 TEL.(718)482-4997 TEL,(718)482-4933 3 DUTCHESS,ORANGE,PUTNAM, 21 SOUTH PUTT CORNERS ROAD 100 HILLSIDE AVENUE,SUITE 1W ROCKLAND,SULLIVAN,ULSTER NEW PALTZ,NY 1 2561-1 696 WHITE PLAINS,NY 10603 AND WESTCHESTER TEL.(845)256-3059 TEL.(914)428-2505 4 ALBANY,COLUMBIA, 1150 NORTH WESTCOTT ROAD 1130 NORTH WESTCGTT ROAD DELAWARE,GREENE, SCHENECTADY,NY 12306-2014 SCHENECTADY,NY 12306-2014 MONTGOMERY,OTSEGO, TEL.(518)357-2069 TEL.(518)357-2045 RENSSELAER,SCHENECTADY AND SCHOHARIE 5 CLINTON,ESSEX,FRANKLIN, 1115 STATE ROUTE 86, PO BOX 296 232 GOLF COURSE ROAD FULTON,HAMILTON, RAY BROOK,NY 12977-0296 WARRENSBURG,NY 12885-1172 SARATOGA,WARREN AND TEL.(518)897-1234 TEL.(518)623-1200 WASHINGTON W 6 HERKIMER,JEFFERSON, STATE OFFICE BUILDING STATE OFFICE BUILDING LEWIS,ONEIDA AND 317 WASHINGTON STREET 207 GENESEE STREET ST. LAWRENCE WATERTOWN, NY 136013787 UTICA,NY 13501-2885 TEL. 315 785.2245 TEL.(315)793-2554 7 BROOME,CAYUGA, 615 ERIE BLVD.WEST 615 ERIE BLVD.WEST CHENANGO, CORTLAND, SYRACUSE,NY 13204-2400 SYRACUSE, NY 13204-2400 MADISON,ONONDAGA, TEL.(315)426-7438 TEL.(315)426-7500 OSWEGO,TIOGA AND TOMPKINS 8 CHEMUNG,GENESEE, 6274 EAST AVON-LIMA ROAD 6274 EAST AVON-LIMA RD. LIVINGSTON,MONROE, AVON,NY 14414-9519 AVON, NY 14414-9519 ONTARIO,ORLEANS, TEL.(585)226-2466 TEL.(585)226-2466 SCHUYLER,SENECA, STEUBEN,WAYNE AND YATES 9 ALLEGANY, 270 MICHIGAN AVENUE 270 MICHIGAN AVE. CATTARAUGUS, BUFFALO,NY 14203-2999 BUFFALO, NY 14203-2999 CHAUTAUQUA,ERIE, TEL.(716)8517165 TEL.(716)851-7070 NIAGARA AND WYOMING 55 Appendix G Construction Phase Inspection Report (Sample Form) LANSING ENGINEERING, PC WEEKLY SWPPP SITE INSPECTION REPORT Project: Date and Time: Owner: Temperature: Contractor: Anibient Conditions: Inspector Name/Title: Soil Conditions: INSPECTION CHECKLIST Record Keeping Yes No NIA ❑ ❑ ❑ 1) Is the Notice of Intent and NOI Acknowledgement Letter retained at the Construetion site? Yes No NIA ❑ ❑ ❑ 2)Is the MS4 Acceptance Dorm retained at the construction site? Yes No NIA ❑ ❑ ❑ 3) Is a copy of the General Permit(GP-0-10-001) and SWPPP retained at the construction site? Yes No NIA ❑ ❑ ❑ 4) Are all necessary contractor certifications signed and retained at the construction site? Yes No NIA ❑ ❑ ❑ 5) Are SWPPP inspection reports signed and retained at the construction site? Visual Observations Yes No NIA ❑ ❑ ❑ 6)Are there currently less than 5 acres of disturbed soils at the site? Yes No NIA ❑ ❑ ❑ 7) Are natural resource areas(i.e. streams, surface waterbodics, wetlands, trees, etc.) protected with barriers or similar erosion and sediment controls? Yes No NIA ❑ ❑ ❑ 8) Have permanent stormwater controls such as sediment basins and conveyance systems been constructed? Yes No NIA ❑ ❑ ❑ 9) Were all stormwater discharges clear or the sante as receiving waters on the day of inspection? ']'his includes receiving waters, all conveyance systcrns (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 NIA ❑ ❑ ❑ 10) Arc catch basins/storm drain inlets properly protected? Yes No NIA ❑ ❑ ❑ 11.) Have vegetative or structural stabilization measures been implemented on all active areas where there are exposed soils? Yes No NIA ❑ ❑ ❑ 12) Have vegetative or structural stabilization methods been implemented on inactive disturbed areas where there arc exposed soils? Yes No NIA ❑ ❑ ❑ 13) have vegetative or structural stabilization methods been implemented on slopes where there arc exposed soils? Yes No NIA ❑ ❑ ❑ 14) Have on-site vehicle tracking sediments and other eroded sediments been cleared? Yes No NIA ❑ ❑ ❑ 15) Is the construction entrance preventing sediment from being tracked onto the street? Yes No NIA ❑ ❑ ❑ 16)Are roads and properties adjacent to the construction site free of sediment and/or debris? Yes No NIA ❑ ❑ ❑ 17) Is dust adequately controlled at the construction site? Yes No NIA ❑ ❑ ❑ 18)I-lave all erosion and sediment controls been installed properly and are they functioning as designed? Yes No N/A ❑ ❑ ❑ 19) Are all erosion and sediment controls being maintained to ensure integrity and effectiveness? Yes No NIA ❑ ❑ ❑ 20) Have all post-construction erosion and sediment controls been constructed as designed? LANSING ENGINEERINC3, PG Use this space below to explain each"NO"checked above,to provide additional comments, and to identify the following: all erosion and sediment controls that need installation, maintenance or replacement, any areas with rill or gully erosion on slopes, loss of vegetation, seed or mulch, excessive deposition of sediments or ponding water along diversion or barrier systems,and any areas of erosion near outlet or overflow structures in the sedimentation basin areas. Include a site map identifying the.following: • Storinwater discharge locations and drainage pathways • Disturbed areas at the time of inspection • Disturbed areas that have not undergone active site work during the previous 14 days • Areas that are expected to undergo initial disturbance or significant work within the next 14 day period • Areas that have undergo is temporary or permanent stabilization since last inspection • Corrective actions that should be taken to install, repair, replace, or maintain erosion and sediment controls; and to correct deficiencies identified with the construction ofpost-constructioil nnanagemcnt practices. • The current phase of Consuuction of 811 post-Construction stnt-tlZwater lnanageMent practices and identification of all construction that is not in compliance with the SWPP1'and/or technical standards CERTIFICATION Lansing Engineering=Inst-)eclat,Signature: _..........--_-- Signature Date LANSING ENGINEERING, PC Appendix H Post Construction Maintenance Inspection Checklist (Sample Form) / Operation and Maintenance Procedure STORMWATER OPERA'T'ION AND MAINTENANCE PROCEDURES The stormwater management system components that are proposed to be within the 894 NYS Route 9 Site Plan include one(1) Subsurface Infiltration System with one(1) Lane Seditnent Strip Pretreatment Device along with the drainage piping and catch basins associated with the system. Post-construction, regularly scheduled inspections and maintenance will be necessary to ensure the permanent structural features such as the infiltration basin remain optimally functional and continue to reduce the risk of sediment loading of surface water bodies. It shall be necessary to maintain all stornnwater controls installed as well as vegetative measures across the site. Subsui ace In rltYation Sstem Iny ection A subsurface infiltration system is a system of stormwater chambers specifically designed to capture and temporarily store stormwater and allow it to infiltrate into the soil. The subsurface system includes one(1) Lane Enterprises Sediment Strip. Storinwater runoff will pass through the Sediment Strip prior to entering the subsurface system, The maintenance objectives for a subsurface infiltration system include maintaining a system of drainage piping, catch basins and Sediment Strip ensuring that the subsurface system never serves as a sediment control device. Subsurfoce Infiltration System Maintenance 1. Inspections should be performed at least twice a year, spring and fall. A more frequent inspection may be necessary where winter sanding operations may lead to more rapid accumulations of sediment. 2. Visual inspection should confirm that the Sediment Strips's components are in working order and there are no blockages or obstructions in the inlet and separation screen. 3. Inspection of the Sediment Strip should also quantify the accumulation of hydrocarbons, trash and sedimcnt in the system. 4. Please refer to the manufacturers requirements for inspection and maintenance procedures including clean out via jetting and vactoring methods. New York State Stormwater Management Design Manual Appendix G Sand/Organic Filter Operation, Maintenance and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: MAINTENANCE ITEM SATISFACTORY I COMMENTS UNSATISFACTORY 1. Debris Cleanout (Monthly) Contributing areas clean of debris Filtration facility clean of debris Inlet and outlets clear of debris 2. Oil and Grease (Monthly) No evidence of filter surface clogging Activities in drainage area minimize oil and grease entry 3. Vegetation (Monthly) Contributing drainage area stabilized No evidence of erosion Area mowed and clipping removed 4. Water Retention Where Required (Monthly) Water holding chambers at normal pool No evidence of leakage 5. Sediment Deposition (Annual) G-8 New York State Stormwater Management Design Manual Appendix G MAINTENANCE ITEM SATISFACTORY COMMENTS UNSATISFACTORY Filter chamber free of sediments Sedimentation chamber not more than half full of sediments 6. Structural Components (Annual) No evidence of structural deterioration Any grates are in good condition No evidence of spalling or cracking of structural parts 7. Outlet/Overflow Spillway (Annual) Good condition, no need for repairs No evidence of erosion (if draining into a natural channel) 8. Overall Function of Facility (Annual) Evidence of flow bypassing facility No noticeable odors outside of facility Comments; Actions to be Taken: G-9 STORMKEEPERT" STORMWATER STORAGE CHAMBER SYSTEMS— MAINTENANCE OVERVIEWSTORM When properly designed the StormKeeper'" system can capture and accumulate sediment for removal. In essence, pollutants can be prevented from entering the stone voids and the potential for occlusion at the infiltration surface is largely mitigated. For chamber systems designed to detain and release water at a restricted rate into a drainage outlet, a filtering process with a level of water quality treatment has been added. In either case a sustainability feature is created and the system will continue to function as designed. The primary means of capturing sediment for removal involves diverting the initial stormwater flow, which carries the bulk of the sediment and other pollutants, to a designated chamber row that is hydraulically isolated from adjacent rows. The designated row is underlain with an appropriate geotextile to facilitate the capture and accumulation of pollutants. Water in the designated row eventually reaches a pre-determined elevation in which it becomes hydraulically connected to adjacent chamber rows so that water is allowed to fill the remaining portion of the chamber system. The designated row in a StormKeeperTM chamber system is referred to as the Sediment Strip. STORMKEEPERTm SEDIMENT STRIP Two strong layers of woven geotextile under the bottom of the Sediment Strip chambers provide a strong base for water- ?=I jetting to facilitate the cleaning operation. � F Inspection of the sediment strip can be :•'' 0 '1 t accomplished through the diversion manhole or through inspection ports which can be installed along the strip. 'Flow directed to the chamber system is first collected in an inlet manhole with an internal weir. The weir acts as a flow diverter and allows runoff at the beginning of a storm event to enter the sediment strip for filtration. once the weir height is reached the Sediment Strip has received its design flow and the "first flush" has been treated: 'Additional chamber rows are connected to a manifold header that is connected to the inlet manhole on the overflow side of the weir, Stormwater overtopping the weir enters the manifold and is conveyed to the remaining chamber rows to meet storage requirements. INSPECTION&MAINTENANCE The inspection and maintenance frequency of the Sediment Strip is largely dependent on municipal regulations. The frequency will also be impacted by the rainfall intensity, pollutant loading, and other site conditions. At a minimum the sediment strip should be inspected every six months until the site is stabilized and annually thereafter. Once a sediment loading baseline is established for the stabilized site inspection frequencies may be adjusted accordingly. Inspection is facilitated by the use of manholes and inspection ports. Inspection ports allow visual access without manual entry. Croce the sediment depth reaches an average of three inches a maintenance cycle should be implemented. When a maintenance cycle is required only the Sediment Strip will require cleanout. Access to the Sediment Strip is provided via a manhole located at the end of the row. The recommended practice of cleaning the Sediment Strip is standard jetting and vactoring methods. The process utilizes a high pressure water nozzle that propels itself from the manhole end of the Sediment Strip to the end opposite, flushing the sediments towards the manhole for extraction by vactoring. As the unit is retrieved the sediment is completely flushed towards the vactoring operation. Nozzle selection shall ensure safe and efficient pressures for jetting against the woven geotextile bottom. The process should only be used on Sediment Strips and is not applicable to other portions of the Storm Keeper"' Chamber system. Lane Enterprises, Inc, 3905 Hartzdale Dr, Suite 514 Camp Hill, PA 17011 STORM KE1Fd-_DL'-_--F_) S 180 Chamber Installation Guideline Prior to installation of the chamber system, adequate attention to the following guidelines is required. In addition, the chamber supplier, chamber installer(site contractor) and the design engineer may meet for a pre-construction meeting to discuss any questions relating to the installation process, and the guidelines herein. Handling and Storage m Upon arrival to the project site, visually inspect the « Chambers should be stored in an area that is flat and chambers to ensure accurate quantities. Any damage free of debris, To avoid the potential for damage,this that may have occurred during transport should also storage area should be isolated well away from the be noted at this time. traveling paths used for construction vehicle traffic. • For efficient shipping and to allow ease in handling and storage, the chambers are stacked neatly upon themselves and secured to a pallet. Unloading is best accomplished via forklift. Foundation and Bedding Preparation ® Using the project plans and the appropriate details, d Upon the prepared foundation, place a 6oz non-woven excavate the chamber system bed in a manner to fabric on the bed bottom and up and along the sufficiently rrccornrnodate the chambers and marlifolds, sidewalls. Maintain a 24" overlap of fabric at all seams. Io emure an adequate fit;and to allow for a stone border, an additional 12" of excavation is required a Using the project plans and appropriate details, provide between the trench sidewalls and the chamber system. a level base of 3/4"-2" clean crushed angular stone over the entire trench bed bottom. Foundation stone depth * If standing water is present,dewatering measures as indicated on the project plans(minirnum 9").See Should be utilized. Figure 1. Using a vibratory roller,compact the stone base to achieve a flat level surface, ® If a soft, unstab{e foundation is encountered, it should be over excavated and replaced with a suitable material a If specified on the project plans,the perimetcr as determined by the project engineer. underdrain piping may be laid at this point. I €._.._. .... EXCAVATE CHAMBER g SYSTEM BED i F j l t{ 4 3/411-2"CLEAN CRUSHED ANGULAR STONE 60z.NONWOVEN GEflTE7CTILE } WITH 24"SEAM OVERLAY C 9" f i CHAMBER WIDTH+24" "" SK180 Chamber InstallationGuideline Manifold Assembly and Chamber Placement a Using the project plans and appropriate details,fully assemble the manifold system. SCOUR PROTECTION-WOVEN GEOTEXTILE �•. a To alleviate the potential for scour at the scouR PRQTrcrloN GEQTExrn E inlet locations, lay a 15` wide strip of woven geotextile, along the entire length of the manifold mainline, adequately carpeting the bedding beneath the inlet locations. See Figure 2&3. Position the first chamber and end cap of each row with the inlet pipes. At the o designated locations, core an opening ¢ p in the end cap and insert the inlet pipe. The inlet pipes should penetrate 12" into the end each Repeat this process for row Maintaining an 8" minimum clears ace p between each row is required. The assembly s of each row is achieved by over topping the last rib of the initial chamber with the first rib of the succeeding chamber. Overlap '---__—__ 17'-6"MIN locations are labeled on each chamber. Row assembly should not exceed the reach of the backfill placement equipment.The final chamber of each row shall also beequipped ASSEMBLY DIRECTION i END GAP with an end cap. INLET MANIFOLD Endcaps are placed with the endcap overlapping in the to of the reduced size ��„mm !� joining corrugation. The endcap should be held in place by screws during -o' WOVEN cEQTExrrLE MIN, backfill operations. Inspection Port Placement Each chamber crown is equipped point to INSPECTION PORT 4°R I scrN CA E:.4n with one circular cut out p scLw N CAP accommodate the vertical inspection 11iAF(=1C RATED Eaux FOR TRAFLl FIC RING REQUIRED port riser. Using the project plans, F identify which chambers should be fitted with inspection ports. Using 96" FRATCO -y 4"aPVC or 2a" a reciprocating saw, cut out the 4" MAX TAP TEE OR Duai Wall HDPE Y M EQUIVALENT ; diameter opening at the appropriate r.,.......-.-_.__...._..................e.____r, _�......_..._..�......_m.. location. Insert a Uni-Tee or equal into the opening. i r i STORMKEEPER a Utilizing 4" PVC Sch. 40 pipe and CHAMBER fittings build the inspection port as shown in Figure 4. 1 i 6u.NONWOVEN GEOTEXTILE ..._.... ......_.. ..... . ....... ............... 314"-2"CLEAN CRUSHED ANGULAR STONE SK180Chamber • Guideline Chamber Backfill Process * Backfill material used for embedment/anchoring and w After the anchoring phase is complete, stone for surrounding areas will be '/1"-2" particle size, clean, placement may continue to surround the chambers crushed angular stone. and around the perimeter. Stone should cover the top of the chamber crown to a minimum height of 11.5". * Placernent of backfill rnaterial for em bedrrient and surrounding areas is best accomplished by using the A Small light weight tracked dozers with ground long reach of an excavator or stone shooter/conveyor pressure less than 1100 lbs/sf may be used at this system. N—g car'tstruction_equi.pment_shall_be_ Imint to finalize the grading of cover stone. Stone must situated atop of the chamber system.. be pushed parallel to rows at all times. Wheel and Roller Loads Not Allowed._ * In order to prevent chamber shifting and to maintain row spacing, carefully deposit the stone evenly along p Cover the entire top of the stone bed with a layer the centerline of the chamber, allowing the stone of 6oz Non-Woven fabric. Overlap all seams 24", depth between the rows to rise equally. During this Utilizing excavator positioned off bed, place initial phase, stone height between rows should not differ by backfill. Begin compaction at 2.4". Roller t€3 more than 12" at any time. travel parallel with rows. Note:See Figure 5 and Table 1 6oz.NON—WOVEN PAVEMENT PER GEOTEXTILE ALL AROUND ENGINEER'S DRAWINGS 45"CHAMBER FINAL BACKFILL II { f 24' 8' ©INITIAL BACKFILL 11 112"MIN. MIN' MAX FBI EMBEDMENT BACKFILL 45]12' ® BEDDING .... 911 MIN, J SUITABLE FOUNDATION B"MIN,— 78" — 12"MIN. s. L' < . E E ^y Chamber • Guideline Fill Material Location Material:Description AASHTO Moa calttpaction.Requirements Designation . lB]Final Backfill Any Wx*till which p€o €do, N/A Subgrade will be placed and Fill material for Layer D starts at the adequate subgrade for tilt I compacted to the requirernents top of the C layer to the bottom of the project per the engineer's I as shown an the site plans, pavement or io tip",,finished grad(of plans. Plans shall indicate an unpaved surface.The pavement subgrade requirements. subha se rnny be par-f tuft he final backffll. Material for layer C starts at the top -`----"---`�'----`..._._f,._._.............. ..--- ----—"-------._...-..__._...._..__....----___p..._._-._.._.....__._'..-.......................................................................... [C]Initial Backfill Wel#graded ranular AASHTO M45 Compaction will not begin until a €tiai,e€€al, <3• F.,flnos. A-1.A-2,A-3 minimum of 24'of material is placed of the embedment zone(layer B)and or over the chambers.Additional layers continues to 24"above the top of the AASHTO M43 i shall be compacted in 12" lifts to a chamber.The pavement subbase may 3,357,4,467,5,56,57, minimum of 95%standard proctor bo part of the,initial imc.kfill laycer I 6,67,68, 7, 78,8,89, density for well graded material. 9,10 l.__- _ i _..__..-........._..................................._...... - ............................. [B]Embedment Stone 3/4"to 2"clean crushed 3,4 No compaction required Embedment stone will surround the I i angular stone. chambers and extends from the top I of the bedding stone(layer A)to the bottom of the fabric layer. ..............................,....,...........-..,..-.-..--...........................,..,............._.....,...............,-....._..-..-.-_...............,.....,..........,..,.............,...-..,.,-.,....,.-.-.r.......,..,..._.,.___ [A] Bedding Stone 3/4" to 2"clean crushed 3,4 I Placed in 9" lifts and compacted with a Bedding Stone extends from the sub angular stone. I vibratory roller. grade to the foot of the chambers. Construction Loading Refer to Table 2for maximum allowable construction vehicle loads. Max Allowable Max Allowable Max allowable Wheels Loads Track Loads roller loads Material Location;. :Fill Depth Max.';4xle Load Max;Wheel Load•`- Track Max'Ground Max Dru"m Weight above chamberstarTrucks for Loaders Width Pressure Dynamic Force [l]] Final Fill in. lbs. lbs. in. psf lbs. Material 36" Compacted 32,000 16,000 12" 3420 i 38,000 I 18" 2350 € 24" 1850 j 30" 1510 € E 36" 1310 __.. ............ _ ... 24" Compacted 32.,000 16,000 12" 2480 2)o,000 [C]Initial Fill 1I I 18" i 177024" 1430 l i € i 30" 1210 36, 1070 3.................................................. ...........................-......._------- -._._._._. ' 24" Bumped 24,000 12,000 12" I 2245 16,000 18" i 1625 I 24" i 1325 30" I 1135 36 1010 . .,., . ..... ... .._ ,----------_----_- "__.-.- _,-. .. ... . _ .., .._..._. _"---._.,.........................--. -. 18" 24,000 12,000 12" 2010 5,000 18" 1480 24" 1220 30" 1060 _................._.....-._-- -_.-- ............._..__......._..,........--------- - ---_-._......_-.-........_..._._.,..... --------- _.._..-.-.-.-.. --......- ...-_.-.-.-............. [6]Embedment 12" Not Allowed Not Allowed 12" 1100 Not Allowed Zone 18" 715 24" 660 I 30" 580 E 6" Not Allowed Not Allowed Not Not Allowed i Not Allowed Allowed Appendix I MS4 Acceptance Form AULNew York State Department of Environmental Conservations Division of Water 625 Broadway, 4th Floor Albany, New York 12233-3505 MS4 Stormwater Pollution Prevention Plan (SWPPP) Acceptance Form for Construction Activities Seeking Authorization Under SPDES General Permit *(NOTE: Attach Completed Forte to Notice Of Intent and Submit to Address Above) 1. 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: 111. Stormwater Pollution Prevention Plan (SWPPP) Revic,v 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: 12.MS4 SPDES Permit Identification Number: NYR20A 13. Contact Person: 14. Street Address: 15. City/State/Zip: 16. `fele hone Number: (NYS DEC-MS4 SWPPP Acceptance Form-January 2010) Page 1 of 2 MS4 SWPPP Acceptance Form- continued V. Certification Statement-MS4 Official(j)-i cilml executive officer or ranking elected official)or Duly Authorized Representative I hereby certify that the final Storn2water 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 Storrnwater Discharges froEn 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 preparcr of responsibility or liability for errors or omissions in the plan. Printed Name: Title/Position: Signature: Date: VI.Additional Information Page 2 of 2 Appendix J Notice of Intent(NOI) i 0644089821 NOTICE OF INTENT New York State Department of Environmental Conservation Division of Water 625 Broadway, 4th Floor NYR Albany, New York 122333505 f°'_ DEC. "so�°n''''� Stormwater Discharges Associated with Construction Activity Under State ..._._.._...___..._.___..-_._...._._._..------_----._._._..___._._____.........._.... Pollutant Discharge Elimination System (SPDES) General Permit # GP-0-15-002 All sections must be completed unless otherwise noted. Failure to complete all items may result in this form being returned to you, thereby delaying your coverage under this General Permit. Applicants must read and understand the conditions of the permit and prepare a Stormwater Pollution Prevention Plan prior to submitting this NOl. Applicants are responsible for identifying and obtaining other DEC permits that may be required. -IMPORTANT- RETURN THIS FORM TO THE ADDRESS ABOVE OWNER/OPERATOR MUST SIGN FORM Owner/Opearator information.. Owner/Operator (Company Name/Private Owner:. Name/Munlc.lpaJit 'Name) 1mI d_ l__m[....1 E n T __ E r pr1_ I_ _ _------------- Owner/operator:: Contact 'Person::Last ':Name .(NOT :CONSUf,TANT} . Ia�dl � nl -� ! � E IITLI L t ! 1 1 ownerlope,raf or Con taot Per on'1 i Names rst I R 1.u l_ _ Owner/Op.erator`Mailinq Address I � pI Lji _zJ0IA1n'ni :[.Dl _I_. Lv i-- 1 I --'i 1 I k I J L L. C L t y - -- - fs'] _at�.�J la End'- �I -1-1 �--1 � E St at:e zip I I 1 �N_L.y_. .l l 2i8 6 Rhone (Owner/Operator) Fax (Owner/.Operator) Email (Owner/Operator) I I I 1 _LJ _I I _ j yLC10W _� I [ ru s e l f ad enC� ah00 FED TAX TD - I Z110t requirQd. f or individuals) _. J ...._. _. _. . . ...._.......................... Page 1 of 14 I 6401089828 Project. Site:: nforma.tion Project/Sit c.-,-'.Name 1 11 I PJ 4..i__� �_t].a'_..t E e I `I`R_ p.I ::..�-:.J.1.__ l ........ S _i t. �._l_1 a.i._ _._..._....W..__� I...... .........1 I � Street Address ..(NOT P.O: BOX) pf . .. I�T _ . -------------- Side of,`Stree.t: O North C South East: U,West. . City/Town/V.r ll.age (TBAT ISSUES BUILDING PERMIT):, _ Q _U _e l_e_ ._s b � r Y _ _ m-__m -m u��_L _ _ l TJ�m _ _E T 11__L 1 1 State Zip - Count`y = t7EC Region ll 11 ..ILL l 1 l I . z... 11...... L I..-- L 1 Name of Nearest' Cross .Str_eet l I _ M I n1 r i a Y R _°.l_ k_d____.I J-1 .1I-L >7s-stance to Nearest' Cros''s Street ..(:Feet) Project In Relation to Cross Street North 0 South Q East:. :. {. West Tax 'Map.:,Numbers Tax Map Numbers Section-Block�Parcel -7-T-1-�];-F -114 '111 1 .............................................. l � 1. Provide the Geographic Coordinates for the project site in NYTM Units. To do this you must coo to the NYSDLC Ster-mwater Interactive Map on the DEC website at: www.dec.ny.gov/imsmaps/stormwater/viewer.htm Loom .into your Project Location such that you can accurately click on the centroid of your site. Once you have located your project site, go to the tool_ boxes on the top and choose. "i." (.i.den t.:i.fy) . Then c]-ick on the center of you.r site and a new window cont:a.tn.i-ng Che: x, Y coordinate's J,n LY..1'h5 w:i.a..]_ pop up. Transcribe these coordinates into the boxes below. L'or_ prob.l.em,3 whit the interactive Map use the help f UnC7tiOn. X Coordinates (Easting) 'St' Coordinates (Northing) 6 Q ! 7 4 E 9 4 7 9 i E 8 6 7 What ti the nature of this construction project? - L Ne.W .Construotion R Redevelopment: with increase in impervious area 02edevelojiment' with no increase in ampervi.ous area Page 2 of 14 F4107089829 3. Select the predominant land use for both pre and post development conditions. SELECT ONLY ONE CHOICE FOR EACH Pre-Development Post--Development Existing Land Use Future Land Use O FOREST O SINGLE FAMTLY HOME Number of Lots C) PAS7..URE1OPEN LAND (_) SINGLis FAMILY SUBDIVISION () CULTIVATED LAND () 'TOWN HOME RESIDENTIAL O SINGLE FAM:CLY HOME Q MULTIFAMT]'1Y RESIDENTIAL C.) SINGLE FAMILY SUBDI:VIS:I:ON t) I:NS'I':I`:I'U'I`IONAL/SCHOOL O TOWN HOME RES1:D1',N'I'I:AL (j INDUS'T'R'I'AL () MULTIFAM'[LY RFS'TDE.NTTAL COMME'RCTAL �) INSTITUTIONAL/SCHOOL () MUNICIPAL C) INDUSTRIAL () ROAD/HIGHWAY l0 COMMERCIAL' () RECREATIONAL/SPORTS FIELD O ROAD/HIGHWAY () 131ICE I?ATH/TRATL 0 RECREATIONAL/SPORTS FIELD () L,:f.NF,AR UTILITY (water, sewer, gas, etc. ) O 13IKE PATII/TRAIL 0 PARKING LOT O LINEAR UTILITY (_) CLFARING/GRADING ONLY C) PARKING LOT () DLMOLITION, NO REDEVELOPMENT [? OTHER O WELL DRILLTNG ACTIVITY (Oil, Gas, etc. ) OTHER *Note: for gas well drilling, non-high volume hydraulic fractured wel]-s only 4,. ..:Tri accordance w'i`th tl.a lax.ger,c.nmmon plan: of develcapment ;'or sale; . enter :the tbtal. 'proDect, si:te ,area, the total .area to be disturbed; x sting impervious area to be disturbed ::(for. redevelopment : activa:ties) and the. future. ianp,ervious <ar.ea constructed within the E disturbed area. :(R6und to':tho n6ares:t tenth of.::an acre. ) Future Impervious ETotal Sire Total Areao:. E�eist�ng Impervious Area, withxz Area Be Disturbed Area ,To ;He Disturbed Distvbed Axea ( I L. f I ! . L��I 0" 21 10-1 5. Do you plan to disturb more than 5 acres of soil at any one time? 0 Yes w No 6.' :Indicate the percentage, of each klydrol,oga::c Soil Group(HSG) .at the :site. ` A .__._ ._.___ __- _ -7 . Is this a phased project? (.) Yes ! No Start�.Date End Date S..' Enter the planned start and end. F7' _.. dates �f t:he da st uxba nre E 5 0 1 2 0 1 8 activities. �_.. .. _. .... ... . _ . .. ....._. LPage 3 of 14 _J I 8600089821 9... Tderit=ify the :nearest surface waterb6dy(ies) to which construction .::site: runoff wi1.l. di sch.arge.,'` Dame: O f f i S i t I e _ W� ei a�n d i s i_ 1 a ' �I _-l l l_ r� _..1..^...�� .1W T, _ 1 ....... € 9a Type of::wat.erbody'ident.ified inQuestion. 9?. O Wetland / 'Stat.e Jursdiction On Site (Arswe9 ). QWetland /.''Sta.te :Jurisdiction Off ,Site O Wetland ./ `Federal Jurisdiction On Site (Answer 9b) `:Wetland / Iedcral Jiirlsdicta.on, Off ,Site O.`.Stream 1/' ':Creek On Site. .Stream /:.:,:Creek :off it e O'.River On Site 9b. How. was the .wet].and idem fixed? C).River Off-Site Lake''�On Si_:te t} Regula:tory Map C)'I ake ,`Off Site Delineate%d :by ,Consults,nt.",: O Other Type' On S�to {j D !.ineated .b Agin Cors o ) n C)::Other Type Of f Site C"Ot her ,(i'dentify) 10. Has the surface waterbody(i.es) in quest-ion 9 been. identified as a ( Yes 0N 303 (d) segment in Appcnndi.x E of GP-0-15-002? ( 11. Is ..this:protect lot atec3 in one. of: i ho .Watersheds identified' in _ Appendix C of GP-0-2.5-002?, O Yes +f•No ...._... ..... ..:.:.. _! .. . _... 1.2. is the project- located in one of the, wator.shed areas associated with AA and AA-S classified 0 Yes * No waters? If no, skip question 13. 13.- .. Does this construct.-on acta.v.i ty disturb:, land with :no -- c istang impervious cover and where tie Soil Slope Phase is [} Yes w No identifiedas an E or F on tkie USDA Skil Survey. If.Yes, ;'what 'is the acreage "to be' disturbed? 1.9 . Wi.l .l. the project disturb soils within a State regulated wetland or the protected 1.00 foot adjacent. Yes 0 No area? LPage 4 of 14 6403089820 15; Does .the site runoff enter a separate`:storm sewer - system (including rnadsi.de. drains; swales, :di.tches, Yes C?.No O Unknown culverts,. etc).? 16. What is the name of the 1-hat- owns the soparat e- storm, seIae.r. system? - - .... � 1I � - 11111 111[ 1:. IL y T E o w n� o=. �; ,Q� � e e n � bE� r .. I I1 I L: I I ► l�� 1I= 1 _.�......1 J 1 I I___I 17 Does any runoff from the site enter a ^sewer?c Lass t f eel ��Yes S. No C) Unknown ... as: a Combined Sewer? 18 . Will future use of this site be an agricultural. property as defined by the NYS Agriculture and Markets Law? 0 Yes 0 No 19 s thrs`;pro erty owned .by a 'state; authoi7ityl state agency, federal government or,. ocal government? C� No Yes 20. Is this a remediation project being done under a Department approved work plan? (i.e. CERCLA, RCRA, Voluntary Cleanup 0 Yes # No Agreement, etc. ) 21'. Has the..:requa.r ed Erosiion ane Sediment :Control coinporie.nt .ef': the. 5wppp keen developed in. conformance .with ,,thy 'cuftcnt NYS U No Standards and. Sper.i fi cations'. fiat ;Erosion and Sediment -control taka Blue 13ok) ? 22. Does this construction activity require the development of a SWPET that includes the post-construction stormwater management; praci:ice component_ (i.e. Runoff Reduction, Water Quality and Yes CJ No Quantity Control_ prat__i:ir._c=s/i.ec;hni_caues} ? If No, skip quest=ions 23 and 27-39. 23. ias the `x�ost -.consi:rue tonstor�tiv at er. �rinaaerric_nt. pr. ac.t..ice component - of the .SWPPP :been :developed in conform ince w.�th the ct.rrn .1 t�XS Yes: C .No Stormwaier Management: Design. Nlanua3.? Page 5 of 14 0251089825 /..,.214'-..,.' the: Stormwater, Pollution Preve. n.tion Plan (S.WPPP)..�was. prepared by.* Soil. and Wate'r Conservation District..:(SWCD) TEE ED` E I-I --U . t) Space, Firs ,Contact.:Narne '(Last, D 1 1-[]"-] Mailinq 2]- State" zip 5 -2 - -------------- avPsnp Preparer Certification T hereby certify that the 3tozmwatez �ollvtiuo 2cevau�ion Plao (�w�pp) �oc this pzoject has been prepared in accordance with the tcnno and cooditi000 of the GIP-0-15-002. Furthermore, I understand that nertifyinq false, inoorrecL nr inaccu,ate information is a violation of this permit and tbo lawn of the state of New York and could subject me to criminal, civil and/or administrative proceedings. First Name MI Last Name Signature- Date i tnreDate K Page 6 of 14 U 0005089822 25 Has naconstruct 6h seq;ience schedule £Ur the planned management practices been prepared? Yes U No 26. Select all of the erosion and sediment control practices that will be employed on the project site: Temporary Structural Vegetative Measures O Check Dams 0 Brush Matting O Construction Road Stabilization C) Dune Stabilization Dust Control O Grassed Waterway O Earth Dike * Mulching C) Level Spreader O Protecting Vegetation O Perimeter Dike/Swale (-) Recreation Area Improvement O Pipe Slope Drain O. Seeding (.) Portable Sediment Tank O Sodding O Rock Dam U Straw/Hay Bale Dike (,) Sediment Basin O Streambank Protection O Sediment Traps O Temporary Swale Silt Fence O Topsoiling Stabilized Construction Entrance O Vegetating Waterways () Storm Drain Inlet Protection Permanent Structural ') Straw/Hay Bale Dike O Temporary Access Waterway Crossing O Debris Basin O Temporary Stormdrain Diversion (.% Diversion * Temporary Swale (',' Grade Stabilization Structure O Turbidity Curtain * Land Grading {.) Water bars () Lined Waterway (Rock) (.') Paved Channel (Concrete) Biotechnical O Paved Flume O Brush Matting * Retaining Wall O Wattling O Riprap Slope Protection Rock Outlet Protection Other O Streambank Protection � ---- 1[ E _ __ l a � _� __1 € -_� 11. 111I � 1J � E [ L Page 7 of 14 —J 0182089828 Post-construction Stormwater Management Practice (SMP) Requirements Important: Completion of Questions 27-39 is not required if response to Question 22 is No. E� 2"7 Identify al site planning-practices. that ,were,used: to .prepare the':tinal site \ p:Iari/layout for. the .project Preservation of.Undlsturbe.d.Areas U Preservation of..Buffers Red%ictior of C1.ear1n4and.Gradin.g ( 1,acating Deve1'opment an Zess,.Sensi:tive Areas C) Roadway, Reduction () Sidew.a1k Reduction C)priveway ;Reduction ` C� Cul.,.de sac Reduction C) Buileixng.=Footprint Reduction 9 Parking Reduction 27a. Indicate which of the following soil, restoration criteria was used to address the requirements in Section 3. 7. . 6("Soil Restoration") of the Design Manual_ (2010 version) . A11 disturbed areas wi.l..l.. be restored in accordance with the Soil Resto.r..ati_on requirements in Table 5.3 of the Design Manual (see page 5-22) . O Compacted areas were considered as impervious cover when calculating the WQv Required, and the compacted areas were assigned a post-construction I-tyd.rol.ogi_c Soil Group (IISG) designation that is one level less permeable than existing conditions for the hydrology analysis. 8. t Provi e the total dater Qualiy.,Uolurc�e (W )v) requi rid for t.hi project (baser€` on i ina.I. 'si.t e :plan/layout),. dotalv:WQ1Etagtiired I e . . 0 0 811 acre-feet..... i 29. :i:dentify the RR techniques (Area Reduction) , RR techniques (Volume Reduction) and Standard SMps with RRv Capacity in Table 1 (:lee Page 9) that were used to .reduce the Total WQv Required(it28) . Also, provide in Table 1 the total- impervious area that contributes runoff to each technique/practice selected. For the Area Reduction Techniques, provide the contribuCing area (includes pervious area) and, if: applicable, the Notal impervious area that contributes runoff to the technique/practice. Note: Redevelopment projects shall use Tables 1 and 2 to i_dont:ify the SMPs used to treat and/or_ reduce the WQv required. If runoff reduction techniques will not- be otbe, used to reduce the .required WQv, skip to question 33a after ident-ifying the Stops. Page 8 of 14 _J 1 7738089822 Table 1 - Runoff Reduction (RR) Techniques and Standard Stormwater Management Practices (SMPs) Total Contributing Total Contributing RR Techniques (Area Reduction) Area (acres) Impervious Area(acres) ! E O Conservation of Natural Areas (RR-1) . . . _.j and/or O Sheetflow to Riparian Buffers/Filters Strips (RR-2) . . . . . . . . . . [.... f and/or 0 Tree Planting/Tree Pit (RR-3) . . . . . . . . . . E0 • 6 9 �_� and/or 0 (} 0 O Disconnection of Rooftop Runoff (RR-4) . . �_-_ l.__.l' and/or I_ RR Techniques (Volume Reduction) ......................... 0 Vegetated Swale (RR-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . € O Rain Garden (RR-6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Stormwater Planter (RR-7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Rain Barrel/Cistern (RR-8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i ! Porous Pavement RR 9 - ,....,.,; ( ) . . . 1 l () Green Roof RR-10 . . . . . . i.... L.....! ...- �.............. Standard SMPs with RRv Capacity € ! O Infiltration Trench (I-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Infiltration Basin (I-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . f O Dry Well (I-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I € 0 Underground Infiltration System (I--4) . • . • • . • • . . • . • . • . • . . • • • • • ' 0 '�$ 1 CBioretention (F-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . O Dry Swale (0-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .J Standard SMPs L O Micropool Extended Detention (P-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . J I 0) Wet Fond (P-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . � E 0 Wet Extended Detention (P-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (.)Multiple Pond System (P-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . € • r7l E CJ Pocket Pond (P-5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....1...........I............ {) Surface Sand Filter (F-1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . k C_) Underground Sand Filter (F-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4_1 � 3 € O Perimeter Sand Filter (F-3) - • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E - I 0 Organic Filter (F-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . . •� . O Shallow Wetland (W-1) . . . . . . . . . . . . . . I . . . . . . . . . I . . . . . . . . . . . . . . . . E I ") Extended Detention Wetland (W-2) . . . ... € C) Pond/Wetland System (W-3) . . . . . . . . . . . . . . . . . . . C) Pocket Wetland (W-4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C)Wet Swale (0-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -- LPage 9 of 14 I 0762089822 Table 2 .- Alternative Sas (DO NOT INCLUDE .PRACTICES- BEING . USED. FOR'.PRE TREATMENT `:ONLY) ! Total Contributing Alternative. SMP Impervious Area(acres) U Hydrodynamic {)Wet:Vault {�Media. Filter otr Provide:`the name and manufacturer of the Alternaive.:SMPs. {i.e.. .: proprie.tary :practice(s) Y being used for WQV treatment. Name ._J __. .._. _.�-.__ �.__ _ _.1...._...._..._. __ .. � _�_�-1�_ _:h NJanufactua er ; Imm77 Note . Redevelopmentpra. ects ,whichdo not use RR techniques; shall us.e questions 28, ` 29, 3.3 and.'33a ;to }a ova de;: SNIP.s: used; tat:al (n1Qv requi red;:and total saQv provided .for thepioj.ect. 30. Indicate the Total RRv provided by the RR techniques (Area/Volume Reduction) and Standard SMPs with RRv capacity ident-ified in question 29. Total RRv provided j- -0 8-- - acre-feet 31.`::: w Is the,.':Total: RRy-provided (x:30) greater than or.:equal.'to the 0 Yes C7:No -If Yes; 'go to question 36. If. No, 'go. to,.questibn 32. 32. Provide the Minimum RRv .required based on HSG. (Minimum RRv Required = (IP) (0. 95) (Ai) /7-2, Aim=(S) (Aic) � Minimum RRv Required ..Iacre-feet 32a 7s: theTptal,:RRv.prov ded (#(.301 g .eate,r ,tha'n or equal. to the Minimum:>RRv, Required {x(:32) ? c..� Yes C No If.Yes, ;ga ., o question�.33.. Note: se :.the space.=prov_ ded n .que.stion' #39 :to .s.ummarize, the PE"Cl iC site limitations: and justifzcat:<ion for net reducing:. . 100 of .67 v. required (428.) . . .A ,cleta�.led 'evalua on.;of l e specific site lzmita:tions and . ustiicaton for ride reducing: 00`' -.of:.. the-W required . (i#28,) must` also 'be .included 1h .the SWPP.P. :If No, sizing criteria :has riot been met, So. NOI cannot be processed SWPPP preparer must modify desigxz, to meet sizing lcrteriri ...::_ .. .... Page 10 of 14 _j F176608982.7 33. :identify the Standard SMPs in '.fable 1. and, if applicable, the Alternative SMPs in Table 2 that were used to treat the remaining total. WQv (=-Tota]_ WQv Required in 28 - Total RRv Provided in 30) . Also, provide in Table 1 and 2 the total. .impervious area that: contributes runoff to each practice selected. Note: Use Tables 1. and 2. to identify the SMPs used on Redevelopmezlt projects. ------- ::,33aTndi.cate the Total WQv provided ::(i.e. WQv treated) by the SMPs identified ,In question .#33 ;and Standard SMPs..with FZRv. Cap:a,clty ;identsfled:. in question':29 El WQv,"Pro vided`...._.1_ -- acre feet Note.:'Fo'n.the standard SMPSzWit h.RRv c,.apacityr. the WQv provided by eachactice the WQv Cal Gula' ed using '�i he:.contribut ing drainage :area fa .th'e practice.` RRv provided by: the practice {See :'fable..3,'5 a.n Design Manual) ........... - sum of the TotalM.�v provided (#30) and 39 . 1'r_ov�_de the � ................................. the WQv provided (#33a) . 35.` Ts. the ,:sura, of-'the RRv pxovided: ( ;30) and the wOtT: provded {# 33aj 'greal or then or equal to the:.total WQv re:c)uireci {428) CJ Yes: ,ONO'. If. Yes, go to quests.on 36. 1£.No', ;:sxz:Lng.criteria has not been :met, 'so..NOI ncin not be'. processed SWPPP preparer must modify ;design to meet sizing criteria n. ........_. . _ 36. Provide the total_ Channel Protection Storage Volume (CPv) required and provided or select-, waiver. (36a) , if applicable, CPv Required CPv Provided 0 1 0 5lacre-feet ! 0 5 I acre-feet 36a The need: to pzovide char�rle] pro#_ec;t2on `has been waaved because ():Sit(, discharges c]irecly ,.t C? Lida] waL:ersa o,r a flJth order.or larger :;stream. [ C) Reduction of the total.. CPv :is. achiev d oh ;'site through runoff reduction techniques or, infiltration systems. 37 . Provide the Ove.rbank }:;'_Loud (Qp) and lirtr_eme blood (Qf) contr.ol, criteria or select waiver (37a) , if applicable. Total Overbank Flood Control Criteria (Qp) Pre-Development Post-development 0} -O..I 3 CFS 0 0 0 _._..... . _.1CFS Total Extreme Flood Control Criteria (Qf) Pre-Development Post-development 5 5 0 € ' 1 1 � } . }_... ICFs 1 �._.. CFS Page 11 of 14 F1310089822 37a T.he nedd to;meet.':,the .Qp and Qf. :criteria has beens. Q Site di scharges. djr c c t I y to tidal Waters. or a .fifth` order' or Larger stream. 0 Downstream`:analysia :rcvea].s that the Qp and Qf cont-ol5 are nol- required —----- 38. Has a long term Operation and Maintenance Plan for the post-construction stormwater management practice (s) been 7 Yes U No developed? If Yes, Identify the entity responsible for the long term Operation and Maintenance --_ 1 _-----.. L _.I . . .. . 1 1 _ l I :1 __.. 1 ! 1 �--- �]I � 1_. I I � -- - - - - - -� 39 Usa this space to sizmmarize the ;:specific sato 1imitations: and :ju5t.l.f�catSon. lar no`t reducing '100 .ofi WQv re'quireci(#(28}:: (See quescion ' 32a): This space: can.also }a .used for,.;other pertinent, project Tnformation`` 1.00% of the WQv has been reduced by green infrastructure practices. 1 I I E f ' r i' t E t I1I E 1 E ` [ ff t Page 12 of 14 I 4285089826 40. Identify other [)EC permits, existing and new, that are required for t.h _s project/facility. 0 Ai.r Pollution Control 0 Coastal. Erosion 0 Hazardous Waste O Long Island Wells C.) Mined Land Reclamation C) Solid Waste C.) Navi.gablo Water-s Protection / Article 1.5 C) Water_ Quality Certificate (.) Dam Safety O Waiver Supply 0 Freshwater Wetlands/Ar.ti_cle 24 O Tidal Wetlands C) Wild, Sccni_c and Recreati.ona.l. Rivers O Stream Bed or Bank Protection. / Article 1.5 C) Endangered or Threatened Species (:Incidental Take Permit) () Individual SI"DE"S C) SPDBS Multi--Sector GP f N Y RI- - C) Other_ ...1._... .....1 . .l I ...._._.� i.. 1 I L. .....I 1..............L. �.... ...� • None ---------- Does this.p�.bacc t .requir c a ;U`' Army C o p o,f 1 nq.a ncct Wet land L'ertn__i > �) Yes No If yes, Indicate.Size xe cf impact. [ 42. Is this project subject to the requirements of a regulated, traditional land use control_ MS4? Yes 0 No (If No, skip question 43) 4 3. Has.,the'. "MSA `SWI'PP Accept ante" form been signed by the principal Xes O No -- ex cut;ll lve officer or, ranking elected o iici;al nand subin t ted along with this .NOI? ` 44 . If this NO:I: is being submitted for the purpose of continuing or transferring coverage under a general permit for stormwater_ runoff from construction acti.vi_ti_es, please indicate the former_ SPD11S number ass=i..gncd I N Y R� E ....... Page 13 of 14 3547089826 Owner Operator .Certification I have read :or been advised of the permit cohditions and'ibQlieve that ].:understand.them. I also: understand :that,. under the. terms. 'of the perinIt" "there may be.'rep.orting'requi:rements. I hereby certify ..,that this decument:.and the correspanaing.dacuments:wexe prepared under;;s�ty da:rectian' or supervision. ..:I''am aware that, there are-significant penalties for:submitting,false informati.on, . including 'the possibility of, Exna:`:and imprisonment for 'knowing violations. I further understand that coverage under the general:permit wi 17. `lie .ident:ifaecJ `.in'the : cN.nncr?c�d.gnte�?t !lz t T call,). zeC0-ve as a result of suhrnxt t'.i n.g:this NOT :and cyan be as long as .s1xty ;(60) ,business. days .as provided `fox in;the'generalper mxt' i also understand that, by submitting:tl is 'NOI, I. ant acknowledging that :the, SWPPP 2ias been. developed and will:be implemented as the first element bf. cozistructian, and acjroeing to coitply with all .the tents and'..conditions:of the. general permit: ior:'Wh).c h thisNGI:.I s `being.submxttFd. .Print First;Naie MT Print ':bast Naive ..Owner/Operator Sinature ; Date - - - .......... ....... _ .-..... ------- . .. ... -. Page 14 of 14 Appendix K Notice of Termination (NOT) New York State Department of Environmental Conservation AskDivision of Water v _ 625 Broadway, 4th Floor Albany, New York 12233-3505 *(Num Submit completed form to address above)'- NOTICE bove)*NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity Please indicate your permit identification number: NYR _ I. Owner or Operator Information 1. Owner/Operator Name: 2. Street Address: 3.City/State/Zip: 4. Contact Person: 4a.'relephone: 5.Contact Person E-Mail: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/'"Zip: 8. CoLrnty: III. Reason for Termination 9a. ❑ All disturbed areas have achieved final stabilization in accordance wi€Ii the general pennit and SWPPP. "Date final stabilization completed(month/year): 9b. D Permit coverage has been transferred to new owner/operator. Indicate new owner/operator's permit identification number: NYR (Note: Permit coverage can not be terminated by owner identified in L 1. above until new owner/operator obtains coverage under the general hermit) 9c. ❑ Other(Explain on Page 2) IV. Final Site Information: I Oa. Did this construction activity require the development of a SWPPP that includes post-construction stormwater management practices? ❑ yes ❑ no (If no,go to question 1 Of.) ]Ob. Have all post-construction stonnwater management practices included in the final SWPPP been constructed'? © yes ❑ no (If no,explain on Page 2) 10c. Identify the entity responsible for long-term operation and maintenance of practice(s)'? Page ] of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity-continued 10d.Has the entity responsible for long-term operation and maintenance been given a copy of the operation and maintenance plan required by the general permit'? O yes Ono 10c. Indicate the method used to ensure long-term operation and maintenance of the post-construction stornlwater management practice(s): ❑ Post-construction stornlwater management practice(s)and any right-of-way(s)needed to maintain practice(s)have been deeded to the municipality. ❑ Executed maintenance agreement is in place with the municipality that will maintain the past-construction stormwater management practice(s). ❑ For post-construction stormwater management practices that are privately owned,the deed of record has been modified to include a deed covenant that requires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan. ❑For post-construction stormwater management practices that are owned by a public or private institution (e.g. school,college,university),or government agency or authority,policy and procedures are in place that ensures operation and maintenance of the practice(s) in accordance with the operation and maintenance plan. 10f. Provide the total area of impervious surface(i.e. roof,pavement,concrete,gravel,etc.)constructed within the disturbance area? (acres) 11. Is this project subject to the requirements of a regulated,traditional land use control MS4? L) yes Ll no (If Yes,complete section VI -"MS4 Acceptance" statement V. Additional Information/Explanation: (Use this section to answer questions 9c. and 1 Ob.,if applicable) VI. MS4 Acceptance-MS4 Official(principal executive officer or ranking elected official) or Duly Authorized Representative(Note: Not required when 9b, is chocked-transfer of coverage) I have determined that it is acceptable for the owner or operator of the construction project identified in question 5 to submit the Notice of Termination at this time. Printed Natne: Title/Position: Signature: Date: Page 2 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity-continued V11. Qualified Inspector Certification-final Stabilization: I hereby certify that all disturbed areas have achieved final stabilization as defined in the current version of the general permit,and that all temporary,structural erosion and sediment control measures have been removed, Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Naive: 'Title/Position: Signature: Date: VITT. Qualified Inspector Certification-Post-construction Storinwater Management Practice(s): I hereby certify that all post-construction stornwater management practices have been constructed in conformance with the SWPPP. Furthermore,I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal,civil and/or administrative proceedings. Printed Name- 'title/Position: Signature: Date: IX. Owner or Operator Certification I hereby certify that this document was prepared by me or under my direction or supervision. My determination, based upon my inquiry of the person(s)who managed the construction activity, or those persons directly responsible for gathering the information, is that the information provided in this document is true,accurate and complete. Furthermore,I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of'New York and could subject nye to criminal,civil and/or administrative proceedings. Printed Name. 'ritic/Position: Si nature; Date: (NYS DEC Notice of'rermination-January 2010) Page 3 of 3 Appendix L Deep Ripping and Decompaction, Spill Reporting Am New York State Oboe DEPARTMENT OF ENVIRONMENTAL CONSERVATION Division of Water Deep-Rippingand Decompacti* on April 2008 New York State Department of Environmental Conservation 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) 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), frorn 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. Y, Fw , a Y . rshe s iy E Fig. 1. A typical deep ripping;phase of this practice, during the first in a series of Fig. 2. About 50%of the volume of undisturbed progressively deeper"rips" through severely loam surface soil is pore space, when soil is in compressed subsoil. good condition for plant growth. Brady, 2002. 1 Recommended Application of Practice The objective of Deep Ripping and Decornpaction is to effectively fracture (vertically and laterallly) through the thickness of the physically compressed subsoil material �r. ( � ), � porosity see Fi Figure 3 restoring soiland � permeability and aiding infiltration to hell ` ? �= reduce runoff. Toge,thei with topsail stripping, the"two-phase" two-phase practice of Deep Ripping and Decompaction first became established as a "bestt. managementpractice"through ongoing success on commercial farmlands affected by heavy I ig. 3. Construction site with significaiat utility construction right-of-way projects compaction of the deep basal till subsoil (transmission pipelines and large power lines). extends 24 inches below this exposed cut- and-fill work surface. Soil permeability, soil drainage and cropland productivity were restored. For broader construction application, the two-phase practice of Deep Ripping and Deconlpaction 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 "decor paction," 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 sore 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 2 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 they s topsoil horizon (30 cm) due to the limited amount of macro pores, e.g.: natural subsoil fractures, worn holes and root channels. rq 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 Fig 4. Profile (in centimeters) displaying the two-phase practice of deep ripping and infiltration test result of the natural undisturbed decompaction, followed by the permanent establishment of an appropriate, deep taproot horizons of a soil in Hydrologic Soil Group C. 3 lawn/ground cover to help maintain the restored subsoil structure. Infiltration after construction- induced mixing and compression of such subsoil n3aterial 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 decornpaction 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 4 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 snlearing" of the material or added "squeezing and compression" instead of the necessary li•acturing. 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 held 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 1l8-inch diameter ` thread. (Use the sante test for stored topsoil Fig. S. Augered from a depth of 19 inches material before respreading on the site.) if the below the surface of the replaced topsoil, respective soil sample crumbles apart in this subsoil sample was hand rolled to a segments no greater than 3/8 of an inch long, by 1/8-inch diameter. The test shows the soil at the time it is rolled down to 1/8 inch diameter, it this site stretches out too far without is low enough in moisture for deep ripping (or crumbling; it indicates the material is in a topsoil replacement), and decompaction. plastic state of consistence, too wet for final Conversely, as shown in Figure 5, if the rolled decompaction (deep subsoiling) at this time. 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 recornpaction 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 5 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 Iess durable and used for only lighter land-fitting (see Figure 6). 4 t 41 Fig. 6. A light duty chisel implement, not Fig. 7. One of several variations of an adequate for either the deep ripping or agricultural ripper. This unit has long, rugged cleco�l3 Faction dee subsoiling) phase. shanks mounted on a steel V-frame for deep, l (deep g) 1 aggressive fracturing through Phase 1. 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 S 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. 6 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/lel;. Using the examples of a 3-shank and a 5-shank implement, the respective tractors should have 120 and 200 lip 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 t 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 Fig. 8. A deep, angled-leg subsoiler, ideal for unobstructed, former construction access area Phase 2 decompaction of after the topsoil layer simultaneously through 11 inches of replaced is graded on top of the ripped subsoil. 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 lip, such as the one in Figure 9 pulling a 3-shank deep ripper, may be more maneuverable. zsYs ; 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 Fig. 9. This medium tractor is pulling a 3- vertical fracturing of the soil materials shank deep ripper. The severely compacted necessary to restore soil permeability and construction access corridor is narrow, and the infiltration. In addition, the power graders and 120 hp tractor is more maneuverable for Phase bulldozers, as pullers, are far less maneuverable I deep ripping (subsoil fracturing), here. for turns and patterns than the tractor. 7 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 frorn 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 N 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 1 l inch thick layer of replaced topsoil and the upper subsoil should run at the subsoiling implements full operating depth. r nZ'�w r t 15 .. Fifa. l O. An early pass"with a 3-shank deep Fig. 11. A repeat run of the 3-shank ripper ripper penetrating only 8 inches into this along the same patterned pass area as lig. 9; worksite's severely compressed subsoil. here, incrementally reaching 18 of the needed 22 inches of subsoil fracture. 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 8 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 ;/- inch cone penetrometer.) 0 S � x x � � A�F Firg13. The same deep, angled-leg �subsoiler Fig. 1.2. Moderately dry topsoil is being ' 1 an�' 3 g shown in Fig. `7 is engaged at maxin�un� replaced on the affected site now that Phase 1 depth for Phase 2, decompaction (deep ddeep ripping of the compressed subsoil is dee complete, soiling), of the replaced topsoil and the upper subsoil materials. 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. 9 • 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 unix, 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, seed ing/plantingg/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;. 15. The same site as Fig. 14 after deep Fig;. I4. The severely compacted soil ofa zipping of Clic exposed subsoil, topsoil temporary construction yard used daily by replacement, decoznpaction through the heavy equipment for four months; shown topsoil and upper subsoil and final surface before deep ripping, topsoil replacement, and tillage and revegetation to maintain soil decompaction. permeability and infiltration. 10 The Deep Ripping and Decompaction practice is, by necessity, more extensive than periodic subsoiling of farmland.The cost of deep ripping and decoinpacting (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 213 to 314 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) Decoinpacting or deep subsoiling takes 314 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. II Resources Publications: • American Society of Agricultural Engineers,. 1971_ Compaction of Agrindtaral Sails. ASA - • Brady, N.C., and R.R. Weil,2002. The Nature and Properties of Soils. 1311,ed. Pearson Education, Inc. • Baver, L.D. 1948.. Soil Physics.John Wiley &Sons. • Carpachi, N. 1987 (1995 fifth printing). Excavation and Grading Handbook, Revised. 2°1 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, 411, ed, Iowa State University Press. • Magdoff, F., and II. van Fs. 2000. Building Soils for Better Crops. 2°f ed. Sustainable Agricultural Networks • McCarthy, D.F. 1993. Essentials of Soil Mechanics and Foundations, Basic Geotechnics 411, ed. Regents/Prentice Hall. • Plaster, E.J. 1992. Soil Science&Management.3"r 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 Srrrvet/of (various names) County, Nezo York. USDA. Internet Access: • Examples of implements: V-IZ_ippeKsw Access by internet search of John-Deere Ag-Nero Erlteipment Dior 915 (Jarger-frame model) V- Rippe; and, for 913 (smaller-frame model) V-Ripper. Deep, angled-leg subsoiler. Access by internet search of: ham Brothers Shear Bolt Paratill-Subsoilen 13tt �(safesinanu I.deere,com sales salesm i�ua�en_NJ rimarv.,t[IiNo12008(feature ri ers 915V atterfrarrne.htmPsbu a Aink=m-odcat_Last visited.March 08. • Soils data of USDA Natural Resources Conservation Service. NRCS Web Soil Survey. ht42:Jlwebsoilsurvey.rures.usda.8ova 1 and USDA-MRCS Official Soil Series Descriptions; View by Narne. l ttp: ortho.ftw.nres.usda. ,ov c Ti-bin osd osdname.c i . Last visited Jail, 08. • Soil penetrometer information. Access by internet searches of. Diagnosing Soil Compaction using a Penetrometer(soil compaction tester), PSU Extension; as well as Diekezil john Soil Compaction Tester. hl��www dicky johEli7roclucts cam d�ailCoi �actionTest:t�df and htt Y &1 QiisQil.;su edu/Extension Facts gcl78ndf last visited Sept. 07 12 TECHNICAL FIELD GUIDANCE SPILL REPORTING ANIS INITIAL NOTIFICATION REQUIREMENTS 1.1-I NOTES Spill Reporting and Initial Notification Requirements GUIDANCE SUMMARY AT-A-GLANCE ■ Reporting spills is a crucial first step in the response process. • You should understand the spill reporting requirements to be able to inform the spillers of their responsibilities. • Several different state, local, and federal laws and regulations require spillers to report petroleum and hazardous materials spills. ■ The state and federal reporting requirements are summarized in Exhibit 1.1.-1. ■ Petroleum spills must be reported to DEC unless they meet all of the following criteria: • The spill is known to be less than 5 gallons; and • "file spill is contained and under the control of the spiller; and • The spill has not and will not reach the State's water or any land; and • The spill is cleaned up within 2 hours of discovery. All reportable petroleum spills and most hazardous materials spills must be reported to DEC hotline (1-800-457-7362) within New York State; and (1-518 457- 7362) from outside New York State. For spills not deemed reportable, it is strongly recommended that the facts concerning the incident be documented by the spiller and a record maintained tar one year. ■ Inform the spiller to report the spill to other federal or local authorities, if required. • Report yourself those spills for which you are unable to locate the responsible Spiller. • Make note of other agencies' emergency response telephone numbers in case you require their on-scene assistance, or if the response is their responsibility and not B SPR's. 1.1-2 NOTES 1.1.1 Notification Requirements for Oil Spills and Hazardous Material Spills Spillers are required under state law and under certain local and federal laws to report spills. These various requirements, summarized in Exhibit 1.1-1, often overlap; that is, a particular spill might be required to be reported under several laws or regulations and to several authorities. Under state law, all petroleuan and most hazardous material spills must be reported to DEC Hotline (1-800-457-7362), within New York State, and to 1-518- 457-7362 from outside New York State. Prompt reporting by spillers allows for a quick response, which may reduce the likelihood of any adverse impact to human health and the environment. Yo will often have to inform spillers of there responsibilities. Although the spiller is responsible for reporting spills, other persons with knowledge of a spill, leak, or discharge is required to report the incident (see Appendices A and 13). You will often have to inform spillers of their responsibilities. You may also have to report spills yourself in situations where the spiller is not known or cannot be located. However, it is the legal responsibility of the spiller to report spills to both state and other authorities. BSPR personnel also are responsible for notifying other response agencies when the expertise or assistance of other agencies is needed. For example, the local fire department should be notified of spills that pose a potential explosion and/or fire hazard. If such a hazard is detected and the fire department has not been notified, call for their assistance immediately. Hire departments are trained and equipped to respond to these situations; You should not proceed with your response until the fire/safety hazard is eliminated. For more information on interagency coordination in emergency situations see Part 1, Section 3, Emergency Response. Another important responsibility is notifying health department officials when a drinking water supply is found to be contaminated as a result of a spill. It will be the health department's responsibility to advise you on the health risk associated with any contamination. I?xhibits 1.1-1 and 1.1-2 list the state and federal requirements to report petroleum and hazardous substance spills, respectively. The charts describe the type of.material covered, the applicable act or regulation, the agency that must be notified, what must be reported, and the person responsible for reporting. New York state also has a emergency notification network for spill situations (e.g., major chemical releases) that escalate beyond the capabilities of local and regional response agencies/authorities to provide adequate response. 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Q a M >N t0 O Q — 4) U p N fG E Ill L O C C 3 O C7 co i>4 W w V- 0 � � \ ■ � / � \ m � E � \ 6 � � m $ \ § � 2 \ / / � J J � q 2 / � k2 0 � ca 9 — x0 [ \ � e 0 3 z 7 0 % tm _ \ � t / f = m o = k « \ U\ / cn2 § 0 $ \_ e b L 2 0 � e k \ 00 \ \ k 0 / C, R m U) x u 7 e \ / \ / \ \ 0 \ \ƒ 7 / ■ @f ) 0 > % \ / § (Duf # > = k ) a a < m m TECHNICAL FIELD GUIDANCE SPILL REPORTING AND INITIAL NOTIFICATION ENFORCEMENT OF SPILLER RESPONSIBILITY 1.1-14 NOTES Spill Reporting and Initial Notification- Enforcement of Spiller Responsibility GUIDANCE SUMMARY-AT-A-GLANCE # Use the "Notification Procedures Checklist" (Exhibit 1.1-3) to document conversations with the responsible party or potentially responsible party(PRP/RP) concerning his or her clean-up responsibilities. # The steps to follow when you inform the PRP/RP of his or her legal responsibility are: -- Give your name and identify yourself as a DEC employee; -- Inform them that they have been identified as the party responsible for the spill; -- Inform PRP/Rps of their liability for all clean-up and removal costs. (If necessary, cite Section 181 of the Navigation Law); -- Ask PRP/Rps "point blank" if they will accept responsibility for the cleanup; and -- If the PRP/RP does not accept responsibility, or does not admit to being the PRP/RP, inform him or her that DEC will conduct the cleanup and send the bill to whoever is the PRP/RP. Also inform them that a DEC- conducted cleanup could be more costly than a PRP/RP-conducted cleanup, and that the PRP/RP could face interest charges and penalties for refusing;to clean up the spill. # If the PRP/RP accepts responsibility for the cleanup: (1) Send the PRP/RP a "Spiller Responsibility Letter" (Exhibit 1.1-5) and an "Acceptance of Financial Responsibility Form" (Exhibit 1.1-6) and (2) Send the PRP/RP in "Option Letter," which should outline the options available to the PRP/R1' to clean up the spill. Sete Exhibit. 1.1.-4 for a summary of how and when to use these forms and what they may include. 1.1-15 NOTES 1.1.2 Spill Reporting and Initial Notification - Enforcement of Spiller Responsibility 'Mis section provides guidance on those steps you take to inform responsible parties or potentially responsible parties (PRP/Rps)or spillers of their responsibility under state law for cleaning up spills. This guidance applies to all contacts(by phone,by mail,or in person)you have with Rps throughout the response process concerning their fulfillment of this legal responsibility. The possible consequences of an RP's refusal or inability to conduct the spill response are also discussed. 1. State Law and Policy Under Article 12 of the Navigation Law and Article 71 of the Environmental Conservation law(ECL),those parties responsible for a petroleum release are liable for all costs associated with cleaning up the spill as weII as third party damages (see Introduction-A for more information). Section 181 of the Navigation Law states: Any person who has discharged petro leuin shall he strictly liable, without regard to fault, for all cleanup and removal costs and all direct damages, no matter by whom sustained as defined inthis section, There are two ways by which PRP/RPs can pay for the costs associated with cleanups. First,the PRP/RP can reimburse the state for site investigation, clean-up, and remediation costs incurred by the State Oil Spill Fund or federal Leaking Underground Storage Tank (LUST)Trust Fund. Second, the PRP/RP can assume full responsibility for the cleanup fi-om the beginning and bear all costs throughout the clean-up process. Itis DEC's policy to make every effort to have PRP/RPs pay for cleanups from the outset.' To achieve PRP/RP-directed and PRP/RP-financed cleanups, your responsibilities are to: (1) identify the PRP/RP(s), (2) inform them of their legal responsibilities for the spill, and (3)ensure that they carry out these responsibilities. All investigations of spills and PRP/RPs should be pursued vigorously and without prejudice. Use to your advantage the argument that having the PRP/RP assume responsibility for clean-up costs benefits both DEC and the spiller. It saves DEC the expense of cost-recovery procedures. It also allows the PRP/RP to be more involved in clean-up decisions (e.g., choosing their clean-up contractors) and, more significantly, it usually results in l ower c l can-up costs. Because the PRP/RP is responsib le for al I indirect costs incurred if DEC conducts the cleanup, the spit ler will pay for the DEC contractor's clean-up work, as wet I as the supervision costs incurred by DEC, any third-party claims associated with the spill, and any punitive finds levied. Spillers are not only responsible fo€•assuming the costs of a cleanup, but also can be subject to a$25,000per day fine for not paying(lie clean-up costs(among other violations). 'rhe Navigation Law provides for these penalties i€r Section 192, which states: Any person who knowinggly gives or causes to be given any false information as a part or, o€• in response to, any claim made Pursuant to this article for cleanup and removal costs, direct or rnd€€•ect damages resulting from a discharge, or who otherwise violates any of the provisions of this article o€• any rule promulgated thereunder or who fails to comply with any duty created by this article shall be liableto a penalty of not more.than twenty-five thousand dollars for each of fie€f�ise in court of competent jurisdiction. if the violation is of a continuing nature each day during?which it continues shall constitute an addit€onal, separate, and distinct offense.(emphasis added) 1.1-1b NOTES 2. Notification Process Part 1,Section 4,of this manual discusses the process ofidentifying the PRP/RP as part of the spill investigation for a particular site. Once you identify the PRP/RP, follow the guidance provided below for informing the PRP/RP of his or her responsibilities for spill cleanup. If you are uncertain about who the PRP/RP is, apply the procedures outlined below with all suspected RPs until the responsible party or parties are identified. a. Informing RPs of Their Responsibility at the Spill Scene It is important to inforrn PRP/RPs of their legal responsibility to clean up a spill as sool1 as possible. When you arrive at a spill site,you should immediately inform the representative of any PRP/RP of their liability under the Navigation Law and the Environmental Conservation Law. In doing so, follow the steps covered in the "Notification Procedures Checklist" (Exhibit 1.1-3). Docurnent completion of the notification steps, and identify your contact(s). Although you should be firm and direct in informing the PRP/RP of their responsibility, you should make every attempt to avoid an adversarial relationship with the RP. The full cooperation of the PRP/RP will result in a more efficient and effective cleanup. b. Informing S illers of Their Res.12onsibilfty in Writiin You should send three different letters to the PRP/RP to inform there of their responsibility(see Exhibit 1.1-4, "Notification Forms Surnmary"). If a site response was initiated and you are able to confirm the spill visually, the "Spiller Reslx)nsibility Letter" (Exhibit 1.1-5) along with an "Acceptance of Financial Responsibility Form" (Exhibit 1.1-G)should be sent as soon as possible. In addition,an"Option Letter" that informs the PRP/RP of their possible options for addressing a spill should be sent. These letters should be kept as Marl of the Corrective Action flan (CAP) (see Part 1, Section 5, "Corrective Action Plans.") 1.1-17 Exhibit 1.1-3 Notification Procedures Checklist Completed Step Date Contact(s) 1. Give your name and identify yourself as a DEC employee. 2. Inform the PRP/RP that he/she has been identified as the party responsible for the spill. 3. Inform PRP/RPs of their responsibility to pay for all clean-up costs. (As necessary, cite Section 181 of the Navigation Law or Article 71 of the ECL.) 4. Ask PRP/RPs "point blank" if they will accept responsibility for the cleanup. Response: 5. If the PRP/RP does not accept responsibility, or does not admit to being the spiller, inform him/her that DEC will conduct the cleanup and send the bill to whoever is the spiller. 6. If the PRP/RP does not accept responsibility also inform hire or her that a DEC- conducted cleanup could be more costly than a spiller- conducted cleanup, and that the spiller could tate interest charges and a fine for refusing to pay for the billed clean-up costs. 1.1-18 5 c S 7 % c t o = \ \ e ° @ o n Z 5 = a0 2 \ \ 0 ° d \ \ \ ƒ CD\ \/ 0. D \ k \ / 0 \ \ \ \ \ \ \ . £ \ % S _ƒ \ ° / / o y e° 9 r ' e/ © \ \ ? E c m 0 c m e 7 L: q 0 < ° g ® -J £ ® / « \ e a % % / § \ � / \ / § 9 / >,7 § ® / ; \ ¥ g a ±o o c° g o n \ 0 W k \ / \ cr w \ \ / \ < < \ \ # # t # t # # # # t 2 \ / / 0 0) >a I & Iaj m � m_ E ee [ 2 ± £ % ƒ ƒ ƒ f \ U) ® 2 2 2 \ _ [ U \\ m m £ * = c m 3 ® / L- z: _0 -0 - m 0 = « o = ) o ± / LL c ° _ ° _ ° _ f -0 / -0 [ -0 / \ d $ § 7 \ \ 7 # £ \ / \ ƒ S / \ [ LL � 2 e § \ u ® [ \ 0 7 m LL \ \ \ M/ ■ & § z < D Exhibit 1.1-5 Spiller Responsibility Letter [Date] [Addressee] [Address] Dear [ ]: This is to inform you that as a result of investigation by our Department,we consider you responsible for Petroleum Spill Number , dated , at . Under Article 12 of the Navigation Law, Section 192, any person who discharges petroleum without a permit and fails to promptly clean up such prohibited discharge may be subject to a penalty of up to $25,000 a day. Containment and removal of this spill must be initiated within hours. Your failure to initiate timely spill cleanup and removal, in addition to the penalty stated above, will result in your being billed for all actual costs incurred by New York State as set forth in Section 181 of the Navigation Law. These costs include cleanup and rernoval, all direct and indirect damages, including damages incurred by third parties. Sincerely, Regional Spill Engineer Region 1.1-20 Exhibit 1.1-6 Acceptance of Spiller Responsibility Letter [Date] SPILL# ACCEPTANCE OF FINANCIAL RESPONSIBILITY , hereby assumes responsibility for containment and (Name of Company and Person) cleanup of discharged from (Substance) (Source) on , and reco&mizes that the detennination of the adequacy and propriety of (Date) the containment and cleanup operation continues to rest with the New York State Departnient of Environmental Conservation On-Scene Coordinator. (Authorized Sign-iature and Title) (Name and Title Printed) (Address of Company) (Date and'Time) (Witness) 1.1-7.1 NOTES The"Spiller Responsibility Letter" informs spillers of their responsibility under the Navigation Law and explains the penalties that can be levied if the spiller does not cooperate. It should be sent to the spiller or suspected Spiller as soon as a petroleum spill has been confirmed. The letter notifies the spiller that he or she is required to initiate containment and removal of the spill within a period of time you specify. There are at least three factors you should consider when specifying a deadline in this letter: # The size and nature of the spill; # The proximity of the spill to, or its possible effects on, water supplies(surface or ground water),nearby homes and other structures,and/or sensitive environmental areas;and The possible environmental,safety, and/or human health effects of delaying containment and removal. The "Acceptance of Spiller Responsibility Forn-i" requires the spiller's signature acknowledging his or her responsibility for containment and cleanup of the spill. This form and the"Spiller Responsibility Letter" should be sent by certified snail. The "Option Letter"outlines the possible options available to the PRP/RP for cleanup of the spill. The contents of this letter can vary somewhat depending on how the release was discovered(e.g.,through a complaint or a failed tightness test),the extent and type of spill,and the policies and procedures of your regional office. There is,however,some information that should appear in every"Option Letter." All"Option Letters" should contain the following: spill number, date the spill was discovered,and exact location of the spill. In addition, the letter should cite the response authority provided DEC by Article 12 of the Navigation Act and describe the penalties for noncompliance. Each "Option Letter" should outline clearly the options open to the PRP/RP to address the spill and the information you wish submitted, and may also specify certain deadlines for taking action. However, it is up to youto determine the particular options,information requirements,and dates you include in the letter. Depending on the circumstances, you may list in your letter one or several options from which the PRP/RP can choose. For example:, when an UST fails an initial tank test the following options COUld be included: # Conduct separate integrity tests on the piping and the tanks in order to verify the release source within the tank system. # Remove the"non-tight"tank and either remove and dispose of all contarninated soils,or install monitoring wells. 1.1-22 NOTES # Install monitoring wells and abandon the "non-tight" tank in-place. # Remove the tank within 30 days, according to the requirements for tank removal (outline these requirements in the letter). The "Option Letter"should always be sent by certified mail. In addition,you should have the PRP/RP inform you as soon as possible about the option(s)he or she has chosen. Several examples of possible "Option Letters" are included as Exhibits 1.1-7 through 1.1-12. These are provided as examples only; you should use "Option Letters" developed by your own office, or develop your own. Exhibit 1.1-7 is a sample option letter to an PRP/RP for removal of contaminated soil from an UST release. Note that this option letter includes: (a) specific requirements for removal of the contaminated soil; (b) dates for when the removal must be completed, and (c) requirements for the PRP/RP to forward to DEC copies of the landfill disposal receipt and ample test results. The additional sarrrple option letters apply to the following situations: when an UST has failed an initial tightness test(Exhibit 1.1-8), when an UST fails an isolation tank test (Exhibit 1.1-9), when an UST fails a Petro-tite Systerns Test (Exhibit 1.1-10), and ground-water contamination cleanup(Exhibit 1.1-11). 3. Dealin=with Uncooperative S illens There are generally two ways in which an PRP/RP may sail to fulfill his or her legal responsibilities for spill cleanup: (1) a PRP/RP may refuse from the beginning to accept responsibility, or (2) an PRP/RP may fail to conduct a cleanup in the manner,or in as timely a fashion,as agreed upon with the DEC, If a PRP/RP refuses to cooperate from the outset,try again to change the RP's mind. Send additional notices of Spiller responsibility(Exhibit 1.1-12) and/or initiate phone conversations with PRP/RPs to inform there again of the consequences of not cooperating (i.e.,higher clean-up costs and possible penalties). If a party claims not to be the PRP/RP,you should inform them of your reasons for believing they are the PRP/RP under the Navigation Law. If a PRP/RP agrees to conduct and pay for the cleanup and then does not proceed in the manner agreed upon or as quickly as agreed upon, you should inform the PRP/RP immediately that you are dissatisfied with the progress of the cleanup and that DEC is considering taking it over. There are no hard-and-fast rules for deciding when you should take over a cleanup. If possible,you should always work toward having the PRP/RP continue the cleanup in the agreed-upon manner. Attempt to determine why the cleanup is not proceeding as planned and consider means of helping the PRP/RP-directed cleanup get back on track. 1.1-23 Exhibit 1.1-7 Sample Option Letter: Soil Cleanup Shill [Date] [Addressee] [Address] Dear [ ]: This letter is to confirm your-(site mecting) (telephone conversation)with of this Department on , (Name) (day) (date) (year) in regards to the above-nrientioned spill site. 'Ibis site involves (explanation) The following items were discussed and agreed upon: 1. All contaminated material must be removed and stored on site until it can be properly disposed of at a properly pennitted landfill. 2. All contaminated material must be sampled for . The results must be (analyses) negative for the material to be considered non-hazardous oily debris. You must contact your selected sanitary landfill to verify the sample analyses that they require for disposal. 3. A hauler with a Pail 364 permit must be used to haul the contaminated soil to your selected landfill. 4. Please notify this Depailnent after the work is completed but prior to any backfilling of the spill area so that till inspection of the excavation may be made. 5. Please forward to us a copy of the landfill disposal receipt and the sample results. A schedule for this work is required by (day) (date) (year) Cleanup must be performed by no later than (day) (date) (year) If you have any questions,please feel free to contact (Naive) at 847-4590. Your cooperation will be appreciated. Very truly yours, Senior-Sanitary Engineer 1.1-24 Exhibit 1.1-8 Sample Option Letter: Initial Tank Failure [Date] [Addressee] [Address] Dear [ 7 This Department received notification on that(a) (day) (date) (year) tanks) failed its (their) tank test performed by (gallons) (product stored) . 011 , Mr. of this Department (contractor) (date) (naine) discussed with that one of the following options must be done concerning this tank. (person) OPTION 1: L The tank is to be immediately isolated from the piping and is to be retested. If the tank tests tight, it may remain in service. 2. The lines are to be repaired,if necessary,and retested by a state-approved method. Exposed piping may be air tested. 3. A copy of any test results are to be sent to this office. OPTION 2: if the tank fails the retest, or if you decide not to retest,the following must now be done: 1. All product must be immediately removed f orn the tank. 2. The tank itself must be removed within thirty days. A Petroleum Bulk Storage form must be submitted to this Department prior to tank removal. 3. The interior surf ace of the tank must be cleaned,and all sludge and residue generated by this process must be properly disposed. The tank must be cut open to allow for this work and to ensure proper ventilation of the tank interior. 4. All safety precautions regarding the opening,cleaning;and entering;of the tank must be followed. The interior atmosphere of the tank may be explosive; and proper-procedures must be followed. 5. Once the tank has been cleaned out, it may be disposed as scrap. Mr. must be notified when you have a troll date for retesting or removal. Please note,we must be present when this tank is removed to detennine if any groundwater or soil contamination exists. If groundwater or soil contarnination is found, further remedial work will be required. If you have any questions, please contact at 847.4590. Your cooperation will be appreciated. Sincerely, LJ-25 Exhibit 1.1-9 Sample Option Letter: Retest Failure,Tank Removal [Date] [Addressee] [Address] Dear [ ]: On , a gallon , underground store storage tank at the (day) (date) (year) 0 (material) above-mentioned address failed a system tank test. On , this tank failed an isolation tank test. (day) (date) (year) Since the tank failed the retest, the following must now be done: 1. All product must be immediately removed from the tank. 2. The tank itself must be removed within thirty days. A Petroleum Bulk Storage form(enclosed)must be submitted to this Department prior to tank removal. 3. The interior surface of the tank must be cleaned, and all sludge and residue generated by this process must be properly disposed. The tank must be cut open to allow for this work and to ensure proper ventilation of the tank interior. 4. All safety precautions regarding the opening, cleaning and entering; of the tank must be followed. The interior atmosphere of the tank may be explosive and proper procedures must be followed. 5. Once the tank has been cleaned out, it inay be disposed as scrap. of this Departincnt must be notified when you have a firm (Name) date for removal. We must be present when this tank is reji-iov W. to determine if any groundwater or soil contamination exists. If groundwater or soil contamination is found, further remedial work will be required. For your use, enclosed is a list of contractors that are known by this Department to do this type of work. This list is by no means complete. Any contractor may be used by you for this work. If you have any questions,please feel free to call at 847-4590. (Name) Your cooperation will be appreciated. Sincerely, [ 1 1.1-2C Exhibit 1.1-10 Sample Option Letter: Failed Tank Test [Date] CERTIFIED - RETURN RECEIPT REQUESTED [Addressee] [Address] RE: Spill No. Gentlemen: This office has been informed by (Name) that tank failed a Petrotite systems test. In accordance with Article 12 of the New York State Navigation Law, I must determine if there has been any harm to the lands or the groundwater of the State. In order for n-ie to make this determination, you have three options: 1. Prove that it was not a leaking tank by removing all the piping from the tank and separately Petrotite test the tank. If the tank passes the Petrotite test,it is a piping leak. The tank may then be abandoned or the piping can be repaired, attached to the tank, and the system Petrotite tested. 2. Excavate and remove the tank in the presence of a representative from this office so that an inspection of the tank and the soil can be made. If the tank is sound, and there is no evidence of product loss, nothing further need be done. If there is a problem, proceed as in 3 below. 3. Abandon the tank in-place and install several four(4)inch diameter PVC site wells extending five(5)feet into the groundwater with a screen length of ten (10) feet, with slot size of.020 inches. The exact location and number of wells will be detennined by a representative from this office. These wells will be checked for a period of twelve months by New York State, and if there is no evidence of product for that period, the spill will be removed from our listing. If free or dissolved product appears,cleanup must begin immediately. lfcleanup does not begin by Date by the responsible party, the State will begin t11e cleanup and bill the responsible party. Sincerely, [ ] 1.1-27 Exhibit 1.1-11 Sample Option Letter: Ground-water Cleanup [Date] [Addressee] [Address] Dear [ ]: This letter is to confine your(site meeting) [telephone conversation}with (Name)____ of this Department on Wgyj (date) (year) Groundwater at this spill site is contaminated with (free floating oil) (dissolved oil„components . The following items were discussed and agreed upon: I. #� additional four-inch monitoring wells will be installed at the agreed upon locations. A sketch of a typical monitoring well is enclosed for your use. 2. One recovery well will be installed to recover oil product. Groundwater must be pumped to depress the groundwater table. The groundwater must be pumped to an oil-water separator tank. Accumulated oil may be recovered from the well by bailing; or by a second purnp. A second type of recovery well pumps both oil and water to a separator tank. Oil from the tank is then recovered. You should check with your contractor to determine the best method for the recovery well. Groundwater must be pumped to depress the groundwater table. 3. The discharge water must be sampled for (Contaminates] . Dependent upon the sampling results, it may be discharged with a SPDES permit to Name . The water must at all times be sheenless. An air stripper or a carbon filter-may be necessary for the discharge water. 4. All collected oil must be properly disposed. Copies of receipts indicating the disposal site must be forwarded to this office. It was also agreed that these actions be completed byDate Should you have gray questions,please do not hesitate to contact (Name) at 847-4590. Your cooperation will be appreciated. Sincerely, [ ] 1.1-28 Exhibit 1.1-12 Sample Option Letter: Soil Disposal, Soil Still On Site [Date] [Addressee] [Address] Dear [ ]: A recent inspection by, (Nance) of this office indicated that the contarninatW- soil at your facility still remains on site. We are requesting this oil be removed by da date ear to an acceptable landfill. Please send a copy of the disposal receipt to this office. If you cannot remove the soil by that date,please contact this office immediately. If you do not contact this office and the soil still reExrains on site past_ Date , DEC will have 1Iie soil removed from your site. You will then be billed for the costs of removal and disposal as well any relevant penalties. If you have any questions, please fbel fi-ee to contact (Name)at 847-4590. Your cooperation will be appreciated. Very truly yours, Senior Sanitary Engineer 1.1-29 NOTES If all etioits to encourage a PRI'/RP to continue the cleanup fail, send a certified litter(Exhibit 1.1-13) notifying then-r that their actions Have beei7 unsatisfactory and that DEC will assun-ie responsibility for the cleanup. This letter again informs the PRP/RP of his or her liability for all costs incuixed by DEC during its cle mup. 1.1-30 Exhibit 1.1-13 Unsatisfactory Cleanup Notice Letter [Date] CERTIFIED MAIL SPILL#t [Addressee] [Address] Dear Sir My letter of Date notified you of New York State's interest in a pollution incident for which you are presently considered responsible. You are hereby given notice that your actions to remove the pollutant and mitigate its effects have been evaluate(] as unsatisfactory. Effective --(L)ate) , ]lie New York State Department of Environmental Conservation will conduct all cleanup activities under the authority of Article 12 of the Navigation Law. Removal will be efT-e;cted in accordance with the regulations of the Department of Environmental Conservation. You will be billed for all actual costs incurred by New York State as set forth in Section 181 of the Navigation Law, as well as interest and penalties. Should you require further information concerning this matter, contact: (,Name) Sincerely, [ ] Received and Acknowledged Time Date 1.1-31 TECHNICAL FIELD GUIDANCE SPILL, REPORTING AND INITIAL NOTIFICATIONS - ACCESS AND RIGHT-OF-ENTRY 1.1-32 NOTES Spill Reporting and Initial Notifications - Access and Right-of-Entry GUIDANCE SUMMARY AT-A-GLANCE # Section 178 of the Navigation Law gives you the authority to enter private property to investigate or clean up a suspected spill. # In general, you should inform the property owner of your right to enter onto private property and obtain consent frons the owner. This consent can be either written or verbal. # Detailed information and procedures for access and right-of-entry is considered confidential for spill responders. This information is contained in Appendix L, and is marked confidential. 1.1-33 NOTES 1.1.3 Access and Right-of-Entry 11-iis section addresses the right of NYSDEC personnel to enter private property on which a spill has occurred or is suspceted,for the purpose of investigating,containing,and/or cicaimig up the spill. Detailed information and procedures of access and right-of-entry are considered confidential. Therefore, this information can be found in Appendix L, including your legal rights to enter property and the procedures to follow to ensure that no charges of trespassing are brought against the Depar-ft.nent. 1. State Law and Policy You have the authority, under the Navigation Law, to enter property to investigate or clean up a real or suspected spill. Specifically, Section 178 of the Navigation Law states: The department is hereby authorized to eater and inspect any property or premises,for the purpose of inspecting,facilities and investigating either actual or suspected sources of discharges or violation of this article or any rule or regulations promulgated pursuant to this article. The department is.further authorized to enter on properly or premises in order to assist in the cleanup or removal of the discharge. Any igformationrelating to secret processes or methods of mani.ffacture shall be kept confidential, In any emergency or non-emergency,you must possess information supporting a reasonable belief to suspect that a spill has occurred or is occurring, or that the spill is impacting the premises for which access is sought. A reasonable belief may be based on a report of a spill or visual. observation. For example, if a gasoline station operator reports an unexpected loss of product from his underground storage tanks that are located near private household wells,you might want to investigate those wells and check the water. Although you have the authority to enter the premises, it is always advisable to obtain the consent of the property owner-or his or her agent before entering rhe property. This consent can be either written or verbal. Obtaining this consent may help avoid civil or criminal charges for trespass being logged. In cases where the owner/agent is not available or not ascertainable,entry should be made. 1.1-34