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SWPPP
JARRETT Engineers, PLLC Civil & Environmental Engineering _________________________________________________________________________ 12 East Washington Street Glens Falls, NY 12801 518-792-2907 Part I - Erosion & Sediment Control Portion of the NYSDEC “Stormwater Pollution Prevention Plan” (SWPPP) For Residential Development on property owned by James Brown Located at Upper Ridge Road Queensbury, New York June 2022 Introduction A total of 2 parcels are proposed, James Brown owns 2 parcels on the hillside along the east side of Rt. 9L that he wishes to develop with one and possibly two family homes. He previously approached the Board with a development plan, but that plan has since been modified. In short, access to the two lots would now be shared via “Shop Road”, the driveway to the property to the north. Approximately halfway up “Shop Road” a new driveway would be constructed southward to the Brown properties. The new driveway would be constructed largely along a former logging skid trail, and largely parallel to the contours which would result in a slope not exceeding 15%±. Construction would also facilitate emergency access to the new house(s). Approximately 900’ south of Shop Road would be constructed the first family home, on a former log landing. Ultimately, a second home might be constructed some 400’ further south. Both homes would be developed with new wells, septic systems, stormwater management systems. Also, each would be constructed to minimize visual impacts while allowing the owners to enjoy the valley vistas. The purpose of this Erosion & Sediment Control (ESC) SWPPP and is to document compliance with NYSDEC SPDES stormwater permit requirements for erosion and sediment control on a site experiencing ultimately more than 1 acre of land disturbance as part of the “greater plan of development”. The ESC is supplemented with a “Post Contruction Controls” SWPPP where new impervious area is proposed. Existing Conditions This This project has thus far been conceptualized, and we have discussed the development concepts with the Fire Marshal’s office and planning department. James Brown, Upper Ridge Road Residential Development June 2022 NYSDEC Stormwater Pollution Prevention Plan Page 2 of 6 Compliance with NYSDEC Standards NYSDEC SPDES compliance for erosion and sediment control during construction is required; Compliance references: x Owner / Operator Certification Form (App #1.1) x Contractors’s Acknowledgement Form (App #1.2) x SWPPP Preparer Form (App #1.3) x NYSDEC Notice of Intent Form ‘NOI’ (App #1.4) x NYSDEC General Stormwater Permit GP-0-20-001 (App #1.7) x Construction Sequencing Schedule (App #1.8) x Maintenance, Management& Construction Inspection Checklist (App #1.9) x Construction Stormwater Inspection Checklist (App #1.10) x NYSDEC 2015 Stormwater Management Design Manual (available online through the NYSDEC website: https://www.dec.ny.gov/chemical/29072.html Temporary Erosion & Sediment Controls during Construction The site is most susceptible to erosion and sediment problems during the construction phase of the project. This can result in sedimentation travelling to downstream stormwater control devices and receiving bodies of water. To minimize water and air borne erosion during the construction phase, temporary erosion control measures shall be used. When areas of the site are susceptible to water borne erosion, sediment control barriers shall be provided to reduce (potential) the travel of sediment. [Common construction details for temporary and permanent stormwater and erosion control devices have been provided to support this SWPPP, along with references to the NYSDEC Standards for Erosion & Sediment Control for additional guidance] All disturbed areas shall be stabilized according to the design plans prepared for this site. (App #1.14-Site Plans & Details) Airborne erosion, ie: dust, shall be controlled using water, wind breaks, temporary covers, and/or other approved methods. Pollution Prevention/Waste Storage Construction chemicals shall be stored in construction trailers or other secured sheds/cabinets, or off-site away from stormwater runoff. All waste, litter and construction debris outside of building(s) to be cleaned up and disposed of after each day’s work. Site Stabilization The operator shall initiate soil stabilization measures as soon as practicable in portions of the site where construction activities have temporarily or permanently ceased, but in no case occur more than 7 days after the construction activity(ies) have been suspended or ceased. Winter time Construction Construction during the winter months requires special provisions to assure stabilization of a project site. Winter stabilization methods shall be implemented between November 15th and April 1st, and may be extended as frozen ground conditions persist. Provisions need to be made to provide for the storage of snow and subsequent melt water. Snow management activities cannot impact, disrupt, destroy or degrade James Brown, Upper Ridge Road Residential Development June 2022 NYSDEC Stormwater Pollution Prevention Plan Page 3 of 6 installed erosion and sediment control practices. Drainage structures are to be kept open and free of snow and ice dams. The stockpile of snow in temporary drainage/control structures is not permissible. For further detail, see page 2.38 of the ‘NYS Standards & Specifications for Erosion & Sediment Control’ (Appendix #1.12 attached at end of report). Maintenance During construction, sediment shall be removed from sediment control devices whenever their capacity has been reduced by twenty five (25) percent from the design capacity. If permanent stormwater control devices are required on the project, and are installed prior to completion of construction, they shall be continuously maintained during construction. Silt shall be removed, and the devices permanently stabilized and returned to their full function at the cessation of construction activities on the site. Once construction has been completed on the site, the operator shall inspect the basins on a routine basis. If the inspection determines that the functional volume/capacity has been lost due to siltation, damage, etc. the device(s) shall be cleaned and/or repaired to their intended function. Temporary sediment control devices, including sediment traps, shall be removed from the site only upon compliant stabilization of the site, ie: >80% vegetative growth, etc., has been provided. The footprint of the former temporary sediment control devices shall also be stabilized, with seed and mulch or the equivalent, to prevent erosion. Concrete Washout The wash out of ready mix concrete trucks shall not be allowed to infiltrate into the soil or discharge to surface waters. Wash water is to be discharged into a temoporary excavated or above ground lined construction pit. The pit is to be lined with a 10 mil (min.) plastic sheeting (no holes) for containment of the excess concrete and wash water. Once hardened the concrete may be recycled on-site as a backfill material or buried and covered with 2’ of compacted and stabilized earth fill. Hardened concrete may also be disposed of as construction and demolition debris at an approved/permitted facility. Excess wash water is to be pumped into a watertight containment vessel and properly disposed of off-site. Once 75% of the wash pit is filled it is to then be cleaned. Reuse of the 10 mil plastic sheeting will not be permitted. For further detail, see page 2.24 of the ‘NYS Standards & Specifications for Erosion & Sediment’ (Appendix #1.13 attached at end of report). Construction Phasing & Sequencing This project may be completed in multiple phases. Construction includes site grading and stabilization of the proposed log yard, improvements to the existing access road (Ross Farm Road), construction of an office and maintenance shop as well as the installation of permenant stormwater control measures. The proposed construction disturbance limits should be held to approximately <5 acres at any one time during construction, but may not be practical. Should greater than five acres of disturbance exist at any one time see Inspections & Notifications below. Sequence of the erosion and sediment control measures for the project are to occur as follows: 1. Install all erosion and sediment control devices & maintain all such devices throughout duration of construction. 2. Install construction entrance as designated on plans, if required James Brown, Upper Ridge Road Residential Development June 2022 NYSDEC Stormwater Pollution Prevention Plan Page 4 of 6 3. Clear and grub area proposed for development, minimizing disturbed areas and the removal of trees as much as practical. 4. Rough grade the driveway and house site areas, and apply stone for parking during construction as required 5. Set up temporary sediment basins as required to eliminate direct runoff to water courses 6. Construct driveway to allow access to house site 7. Construct House & Wastewater system 8. Complete site work including: a. Parking/pull off areas b. Landscaping/stormwater basins c. Turf establishment and/or site stabilization 9. Once all areas of the site are permanently stabilized, remove all temporary erosion and sediment control devices. Inspection & Notification Requirements The owner’s contractor shall have NYSDEC trained representative monitor the site daily during active construction (at all times during the construction phase except when the site has been appropriately received “temporary stabilization” in accordance with NYSDEC requirements). Inspections shall include all erosion and sediment control practices for: 1) effectiveness, 2) compliance with the approved site plan, and 3) compliance with NYS Standards for Erosion & Sediment Control, and 4) available capacity. Inspection frequency and documentation requirements shall be in accordance with NYSDEC and other applicable requirements. As required by the NYSDEC SPDES General Permit (latest issue), the owner shall have a certified professional (professional engineer or CPESC) inspect the site every 7 days as stipulated by NYSDEC standards. Should greater than five acres of work area need to be disturbed (open) at any one given time, the owner shall contact the NYSDEC for permission to do so. In addition, a professional (professional engineer or CPESC) must inspect the site two times every (7) days (inspections on consecutive days should be avoided, if not, additional inspections may be required) as stipulated by NYSDEC standards. During winter time construction (November 15th to April 1st – adjusted as frozen ground conditions warrant) enhanced winter time erosion and sediment control practices are to be utilized. Accomodations for the build up of snow and ice are to be provided. Contractor(s) Acknowledgement The General Contractor, the Site Contractor and all other contractors’ who’s scope of work requires compliance with this SWPPP and the NYSDEC Multi-Sector General Permit GP-0-20-001 must sign the James Brown, Upper Ridge Road Residential Development June 2022 NYSDEC Stormwater Pollution Prevention Plan Page 5 of 6 Contractors Acknowledgement form and identify the appropriate tasks / components of the SWPPP for which the contractor is responsible. The contractors’ acknowledgement shall not be considered complete until all identified tasks are acknowledged (initialed) documenting the responsible contractor. As a best practice all contractors working on this project should be intimately familiar with the requirements of this SWPPP as well as the requirements of NYSDEC General Stormwater Permit GP-0- 20-001. (See App #1.2-Contractors’s Acknowledgement Form) NOTE: A copy of this SWPPP, associated design plans, supporting documentation as well as weekly/bi-weekly inspection reports are to be kept in a binder that will be readily available on-site throughout the duration of construction. The on-site binder is to be located in a conspicuous location and clearly labeled. Utilization of a mailbox (labeled ‘SWPPP’) for storage of the binder is a typical means of locating and protecting the on-site binder. A mailbox is to have a minimum 10” opening to facilitate the placement of the on-site binder(s). General Permit Coverage is not valid unless: x Once the five day waiting period is complete after the NOI is e-filed the NYSDEC (waiting period extends to 10 days if the NOI is filed with the NYSDEC via a mailed paper copy) x A copy of the SWPPP is posted on-site x Contractors names and signatures are provided in the SWPPP x Weekly and/or Bi-Weekly inspections are completed x Other conditions may exist, coordination with owner, contractor, engineer and SWPPP inspector may be required Stormwater Pollution Prevention Plan Prepared by: JARRETT Engineers, PLLC H. Thomas Jarrett, P.E. Principal Appendices: 1.1) Maintenance, Management & Construction Inspection Checklist 1.2) Construction Stormwater Inspection Report 1.3) Standards & Specifications for Winter Stabilization’ (page 2.38 of the NYS SSESC) 1.4) ‘Standards & Specifications for Concrete Truck Washout’ (page 2.24 of the NYS SSESC) 1.5) Site Plans & Details (construction shall not commence unless drawings labeled “Issued for Construction” have been issued and are available on site) 1.6) Owner / Operator Certification Form 1.7) Contractors’ Acknowledgement Form 1.8) SWPPP Preparer Form Digitally signed by Gail Morehouse Date: 2022.06.08 12:04:35 -04'00' James Brown, Upper Ridge Road Residential Development June 2022 NYSDEC Stormwater Pollution Prevention Plan Page 6 of 6 1.9) NYSDEC Notice of Intent Form 1.10) NYSDEC Acknowledgement of NOI (Presently not available, NOI to be filed with NYSDEC) 1.11) NYSDEC Notice of Termination Form 1.12) NYSDEC General Stormwater Permit GP-0-20-001 1.13) Construction Sequencing Schedule DEFINITIONS 1. Operator – person, persons or legal entity which owns or leases the property on which the construction activity is occurring. 2. Qualified Professional – a person licensed to practice engineering in New York State or a Certified Professional in Erosion and Sediment Control (CPESC). G-1 Stormwater Pond/Wetland Operation, Maintenance and Management Inspection Checklist Project ___________________________________________________________________________ Location: ___________________________________________________________________________ Site Status: ___________________________________________________________________________ Date: ___________________________________________________________________________ Time: ___________________________________________________________________________ Inspector: ___________________________________________________________________________ Maintenance Item Satisfactory/ Unsatisfactory Comments 1. Embankment and emergency spillway (Annual, After Major Storms) 1. Vegetation and ground cover adequate 2. Embankment erosion 3. Animal burrows 4. Unauthorized planting 5. Cracking, bulging, or sliding of dam a. Upstream face b. Downstream face c. At or beyond toe downstream upstream d. Emergency spillway 6.Pond, toe & chimney drains clear and functioning 7.Seeps/leaks on downstream face 8.Slope protection or riprap failure 9. Vertical/horizontal alignment of top of dam “As-Built” Appendix G: Maintenance Inspection Checklists New York State Stormwater Management Design Manual Appendix G G-2 Maintenance Item Satisfactory/ Unsatisfactory Comments 10. Emergency spillway clear of obstructions and debris 11. Other (specify) 2. Riser and principal spillway (Annual) Type: Reinforced concrete ______ Corrugated pipe _______ Masonry _______ 1. Low flow orifice obstructed 2. Low flow trash rack. a. Debris removal necessary b. Corrosion control 3. Weir trash rack maintenance a. Debris removal necessary b. corrosion control 4. Excessive sediment accumulation insider riser 5. Concrete/masonry condition riser and barrels a. cracks or displacement b. Minor spalling (<1" ) c. Major spalling (rebars exposed) d. Joint failures e. Water tightness 6. Metal pipe condition 7. Control valve a. Operational/exercised b. Chained and locked 8. Pond drain valve a. Operational/exercised b. Chained and locked 9. Outfall channels functioning 10. Other (specify) New York State Stormwater Management Design Manual Appendix G G-3 Maintenance Item Satisfactory/ Unsatisfactory Comments 3. Permanent Pool (Wet Ponds) (monthly) 1. Undesirable vegetative growth 2. Floating or floatable debris removal required 3. Visible pollution 4. Shoreline problem 5. Other (specify) 4. Sediment Forebays 1.Sedimentation noted 2. Sediment cleanout when depth < 50% design depth 5. Dry Pond Areas 1. Vegetation adequate 2. Undesirable vegetative growth 3. Undesirable woody vegetation 4. Low flow channels clear of obstructions 5. Standing water or wet spots 6. Sediment and / or trash accumulation 7. Other (specify) 6. Condition of Outfalls (Annual , After Major Storms) 1. Riprap failures 2. Slope erosion 3. Storm drain pipes 4.Endwalls / Headwalls 5. Other (specify) 7. Other ( Monthly) 1. Encroachment on pond, wetland or easement area New York State Stormwater Management Design Manual Appendix G G-4 Maintenance Item Satisfactory/ Unsatisfactory Comments 2. Complaints from residents 3.Aesthetics a. Grass growing required b. Graffiti removal needed c. Other (specify) 4. Conditions of maintenance access routes. 5. Signs of hydrocarbon build-up 6. Any public hazards (specify) 8. Wetland Vegetation (Annual) 1. Vegetation healthy and growing Wetland maintaining 50% surface area coverage of wetland plants after the second growing season. (If unsatisfactory, reinforcement plantings needed) 2. Dominant wetland plants: Survival of desired wetland plant species Distribution according to landscaping plan? 3. Evidence of invasive species 4. Maintenance of adequate water depths for desired wetland plant species 5. Harvesting of emergent plantings needed 6. Have sediment accumulations reduced pool volume significantly or are plants “choked” with sediment 7. Eutrophication level of the wetland. 8. Other (specify) Comments: New York State Stormwater Management Design Manual Appendix G G-5 Actions to be Taken: New York State Stormwater Management Design Manual Appendix G G-6 Infiltration Trench Operation, Maintenance, and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: MAINTENANCE ITEM SATISFACTORY / UNSATISFACTORY COMMENTS 1. Debris Cleanout (Monthly) Trench surface clear of debris Inflow pipes clear of debris Overflow spillway clear of debris Inlet area clear of debris 2. Sediment Traps or Forebays (Annual) Obviously trapping sediment Greater than 50% of storage volume remaining 3. Dewatering (Monthly) Trench dewaters between storms 4. Sediment Cleanout of Trench (Annual) No evidence of sedimentation in trench Sediment accumulation doesn=t yet require cleanout 5. Inlets (Annual) New York State Stormwater Management Design Manual Appendix G G-7 MAINTENANCE ITEM SATISFACTORY / UNSATISFACTORY COMMENTS Good condition No evidence of erosion 6. Outlet/Overflow Spillway (Annual) Good condition, no need for repair No evidence of erosion 7. Aggregate Repairs (Annual) Surface of aggregate clean Top layer of stone does not need replacement Trench does not need rehabilitation Comments: Actions to be Taken: New York State Stormwater Management Design Manual Appendix G G-8 Sand/Organic Filter Operation, Maintenance and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: MAINTENANCE ITEM SATISFACTORY / UNSATISFACTORY COMMENTS 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) New York State Stormwater Management Design Manual Appendix G G-9 MAINTENANCE ITEM SATISFACTORY / UNSATISFACTORY COMMENTS 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: New York State Stormwater Management Design Manual Appendix G G-10 Bioretention Operation, Maintenance and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: MAINTENANCE ITEM SATISFACTORY / UNSATISFACTORY COMMENTS 1. Debris Cleanout (Monthly) Bioretention and contributing areas clean of debris No dumping of yard wastes into practice Litter (branches, etc.) have been removed 2. Vegetation (Monthly) Plant height not less than design water depth Fertilized per specifications Plant composition according to approved plans No placement of inappropriate plants Grass height not greater than 6 inches No evidence of erosion 3. Check Dams/Energy Dissipaters/Sumps (Annual, After Major Storms) No evidence of sediment buildup New York State Stormwater Management Design Manual Appendix G G-11 MAINTENANCE ITEM SATISFACTORY / UNSATISFACTORY COMMENTS Sumps should not be more than 50% full of sediment No evidence of erosion at downstream toe of drop structure 4. Dewatering (Monthly) Dewaters between storms No evidence of standing water 5. Sediment Deposition (Annual) Swale clean of sediments Sediments should not be > 20% of swale design depth 6. Outlet/Overflow Spillway (Annual, After Major Storms) Good condition, no need for repair No evidence of erosion No evidence of any blockages 7. Integrity of Filter Bed (Annual) Filter bed has not been blocked or filled inappropriately New York State Stormwater Management Design Manual Appendix G G-12 Comments: Actions to be Taken: New York State Stormwater Management Design Manual Appendix G G-13 Open Channel Operation, Maintenance, and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: MAINTENANCE ITEM SATISFACTORY/ UNSATISFACTORY COMMENTS 1. Debris Cleanout (Monthly) Contributing areas clean of debris 2. Check Dams or Energy Dissipators (Annual, After Major Storms) No evidence of flow going around structures No evidence of erosion at downstream toe Soil permeability Groundwater / bedrock 3. Vegetation (Monthly) Mowing done when needed Minimum mowing depth not exceeded No evidence of erosion Fertilized per specification 4. Dewatering (Monthly) Dewaters between storms New York State Stormwater Management Design Manual Appendix G G-14 MAINTENANCE ITEM SATISFACTORY/ UNSATISFACTORY COMMENTS 5. Sediment deposition (Annual) Clean of sediment 6. Outlet/Overflow Spillway (Annual) Good condition, no need for repairs No evidence of erosion Comments: Actions to be Taken: JARRETT Engineers, PLLC Civil Environmental Engineering Project Name: Inspector Name:Date: Signature (required):Time: Weather: Soil Conditions (dry, saturated, etc.): INSPECTION STATUS Yes No N/A Routine Inspection Is this a final site inspection? SITE DISTURBANCE Yes No N/A Are there areas of active disturbance? Are all existing disturbed areas contained by control devices? Inspection of Erosion and Sediment Control Devices / Stormwater Control Devices Type of Control Device Accumulation (if any) in % Repairs/Maintenance Needed 1 2 3 4 Yes No N/A Have stabilization measures been initiated in inactive areas? Is there current snow cover or frozen ground conditions? VISUAL OBSERVATIONS Yes No N/A All erosion and sediment control measures have been installed/constructed? All erosion and sediment control measures are being maintained properly? GENERAL SITE CONDITIONS Yes No N/A Have action items from previous report been addressed? Is the site maintained in an orderly manner? SUMMARY OF ACTION ITEMS TO REPAIR/REPLACE/MAINTAIN/CORRECT DEFICIENCES Watch Items: Follow Up: New: Action Items: Follow Up: New: Inspector Name: Signature (required): WEEKLY SWPPP INSPECTION REPORT 12 East Washington Street Glens Falls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¶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³ZLQWHUVHDVRQ´DOO EDUHH[SRVHGVRLOPXVWEHVWDELOL]HGE\HVWDEOLVKHG YHJHWDWLRQVWUDZRURWKHUDFFHSWDEOHPXOFKPDWWLQJURFN RURWKHUDSSURYHGPDWHULDOVXFKDVUROOHGHURVLRQFRQWURO SURGXFWV6HHGLQJRIDUHDVZLWKPXOFKFRYHULVSUHIHUUHG EXWVHHGLQJDORQHLVQRWDFFHSWDEOHIRUSURSHUVWDELOL]DWLRQ &RPSOLDQFHLQVSHFWLRQVPXVWEHSHUIRUPHGDQGUHSRUWV ILOHGSURSHUO\LQDFFRUGDQFHZLWKWKH6:333IRUDOOVLWHV XQGHUDZLQWHUVKXWGRZQ 67$1'$5'$1'63(&,),&$7,216)25 :,17(567$%,/,=$7,21 November 2016 Page 2.24 New York State Standards and Specifications For Erosion and Sediment Control Definition & Scope A temporary excavated or above ground lined constructed pit where concrete truck mixers and equipment can be washed after their loads have been discharged, to prevent highly alkaline runoff from entering storm drainage systems or leaching into soil. Conditions Where Practice Applies Washout facilities shall be provided for every project where concrete will be poured or otherwise formed on the site. This facility will receive highly alkaline wash water from the cleaning of chutes, mixers, hoppers, vibrators, placing equipment, trowels, and screeds. Under no circumstances will wash water from these operations be allowed to infiltrate into the soil or enter surface waters. Design Criteria Capacity: The washout facility should be sized to contain solids, wash water, and rainfall and sized to allow for the evaporation of the wash water and rainfall. Wash water shall be estimated at 7 gallons per chute and 50 gallons per hopper of the concrete pump truck and/or discharging drum. The minimum size shall be 8 feet by 8 feet at the bottom and 2 feet deep. If excavated, the side slopes shall be 2 horizontal to 1 vertical. Location: Locate the facility a minimum of 100 feet from drainage swales, storm drain inlets, wetlands, streams and other surface waters. Prevent surface water from entering the structure except for the access road. Provide appropriate access with a gravel access road sloped down to the structure. Signs shall be placed to direct drivers to the facility after their load is discharged. Liner: All washout facilities will be lined to prevent leaching of liquids into the ground. The liner shall be plastic sheeting with a minimum thickness of 10 mils with no holes or tears, and anchored beyond the top of the pit with an earthen berm, sand bags, stone, or other structural appurtenance except at the access point. If pre-fabricated washouts are used they must ensure the capture and containment of the concrete wash and be sized based on the expected frequency of concrete pours. They shall be sited as noted in the location criteria. Maintenance All concrete washout facilities shall be inspected daily. Damaged or leaking facilities shall be deactivated and repaired or replaced immediately. Excess rainwater that has accumulated over hardened concrete should be pumped to a stabilized area, such as a grass filter strip. Accumulated hardened material shall be removed when 75% of the storage capacity of the structure is filled. Any excess wash water shall be pumped into a containment vessel and properly disposed of off site. Dispose of the hardened material off-site in a construction/demolition landfill. On-site disposal may be allowed if this has been approved and accepted as part of the projects SWPPP. In that case, the material should be recycled as specified, or buried and covered with a minimum of 2 feet of clean compacted earthfill that is permanently stabilized to prevent erosion. The plastic liner shall be replaced with each cleaning of the washout facility. Inspect the project site frequently to ensure that no concrete discharges are taking place in non-designated areas. STANDARD AND SPECIFICATIONS FOR CONCRETE TRUCK WASHOUT Owner/Operator Certification Form SPDES General Permit For Stormwater Discharges From Construction Activity (GP-0--00 ) Project/Site Name: ________________________________________________________ eNOI Submission Number: _________________________________________________ eNOI Submitted by: Owner/Operator SWPPP Preparer Other Certification Statement - Owner/Operator I have read or been advised of the permit conditions and believe that I understand them. I also understand that, under the terms of the permit, there may be reporting requirements. I hereby certify that this document and the corresponding documents were prepared under my direction or supervision. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I further understand that coverage under the general permit will be identified in the acknowledgment that I will receive as a result of submitting this NOI and can be as long as sixty (60) business days as provided for in the general permit. I also understand that, by submitting this NOI, I am acknowledging that the SWPPP has been developed and will be implemented as the first element of construction, and agreeing to comply with all the terms and conditions of the general permit for which this NOI is being submitted. Owner/Operator First Name M.I. Last Name ___________________________________________________________ Signature ________________________________ Date Contractor(s) Acknowledgement Form – Lyme Adirondack Timber Sales, LLC Page 1 of 2 Contractor(s) Acknowledgement The contractor(s) listed below shall be responsible for all identified tasks/requirements listed below associated with the Erosion & Sediment Control SWPPP and as well as the Post Construction Stormwater Management SWPPP listed above pertaining to Temporary Erosion Control Measures during construction. (Contractor name, address, and phone number to be filled in at the time of contract being awarded) In addition to the listed tasks, the contractor shall make themselves familiar with requirements outlined in the NYSDEC SPDES General Permit, latest issue. General or Primary Contractor: Name: _________ Address: ________________________ ____________ Phone No. ( ___ ) – ______ The above-mentioned contractor and all subcontractors performing SWPPP required work shall read the following statement and sign below stating that they have read and understand the below certification prior to commencing any construction activities. “I hereby certify 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 New York State Pollutant Discharge Elimination System (“SPDES”) general permit for stormwater discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings.” Name of Contracting Firm: ____________ Name: ____________Date: ______ Signature: Name of Contracting Firm: ____________ Name: ____________Date: ______ Signature: This page maybe duplicated as many times necessary to document and obtain signatures from all contractors who's scope of work includes compliance requirements with the attached SWPPP(s). Contractor(s) Acknowledgement Form – Lyme Adirondack Timber Sales, LLC Page 2 of 2 Contractor to initial each of the following tasks for which they are responsible under their approved scope of work: Installation and maintenance of temporary erosion and sediment control measures (including the removal of built up sediment)._______________________________________________________ Building and impervious cover demolishion and removal._________________________________ Installation and maintenance of Concrete Truck Washout Station.___________________________ Use of Concrete Truck Washout Station.______________________________________________ Soil & Material excavation (including Tree Removal & Grubbing). _______________________________________________________________________________ Care and maintenance of soil stockpiles._______________________________________________ Installation of new impervious ground covers (i.e.: roads, driveways, parking lots, sidewalks, etc. - excluding buildings).______________________________________________________________ Complete daily inspections of the erosion and sediment control practices and pollution prevention measures._______________________________________________________________________ Complete daily inspections of the project area to assure the project site is maintained in a neat and orderly fashion and all trash, debris and deletraious material is picked up and disposed up properly. _______________________________________________________________________________ Installation of permanent stormwater control measures.___________________________________ Installation and establishment of temporary stabilization measures.__________________________ Installation and establishment of permanent stabilization measures._________________________ SWPPP Preparer Certification Form SPDES General Permit for Stormwater Discharges From Construction Activity (GP-0--00 ) Project Site Information Project/Site Name Owner/Operator Information Owner/Operator (Company Name/Private Owner/Municipality Name) Certification Statement – SWPPP Preparer I hereby certify that the Stormwater Pollution Prevention Plan (SWPPP) for this project has been prepared in accordance with the terms and conditions of the GP-0--00 . Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of this permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. First name MI Last Name Signature Date Revised: 20 Fax (Owner/Operator) -- Page 1 of 14 New York State Department of Environmental Conservation Division of Water 625 Broadway, 4th Floor Albany, New York 12233-3505 NOTICE OF INTENT -IMPORTANT- RETURN THIS FORM TO THE ADDRESS ABOVE OWNER/OPERATOR MUST SIGN FORM Stormwater Discharges Associated with Construction Activity Under State Pollutant Discharge Elimination System (SPDES) General Permit # GP-0-20-001 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 NOI. Applicants are responsible for identifying and obtaining other DEC permits that may be required. Owner/Operator Information Owner/Operator Contact Person Last Name (NOT CONSULTANT) Owner/Operator Contact Person First Name Owner/Operator Mailing Address City State Zip - Phone (Owner/Operator) -- Email (Owner/Operator) Owner/Operator (Company Name/Private Owner Name/Municipality Name) NYR (for DEC use only) FED TAX ID -(not required for individuals) 0644089821 1.Provide the Geographic Coordinates for the project site. To do this, go to the NYSDEC Stormwater Interactive Map on the DEC website at: https://gisservices.dec.ny.gov/gis/stormwater/ Zoom into your Project Location such that you can accurately click on the centroid of your site. Once you have located the centroid of your project site, go to the bottom right hand corner of the map for the X, Y coordinates. Enter the coordinates into the boxes below. For problems with the interactive map use the help function. X Coordinates (Easting)Y Coordinates (Northing) Project Site Information Project/Site Name Street Address (NOT P.O. BOX) City/Town/Village (THAT ISSUES BUILDING PERMIT) State Zip - County Name of Nearest Cross Street Distance to Nearest Cross Street (Feet)Project In Relation to Cross Street North South East West Page 2 of 14 2. What is the nature of this construction project? New Construction Redevelopment with increase in impervious area Redevelopment with no increase in impervious area Section-Block-ParcelTax Map Numbers Side of Street North South East West DEC Region Tax Map Numbers 6401089828 Ex. -73.749 Ex. 42.652 -7 3.Select the predominant land use for both pre and post development conditions. SELECT ONLY ONE CHOICE FOR EACH Page 3 of 14 Existing Land Use FOREST PASTURE/OPEN LAND CULTIVATED LAND SINGLE FAMILY HOME SINGLE FAMILY SUBDIVISION TOWN HOME RESIDENTIAL MULTIFAMILY RESIDENTIAL INSTITUTIONAL/SCHOOL INDUSTRIAL COMMERCIAL ROAD/HIGHWAY RECREATIONAL/SPORTS FIELD BIKE PATH/TRAIL LINEAR UTILITY PARKING LOT OTHER Future Land Use SINGLE FAMILY HOME SINGLE FAMILY SUBDIVISION TOWN HOME RESIDENTIAL MULTIFAMILY RESIDENTIAL INSTITUTIONAL/SCHOOL INDUSTRIAL COMMERCIAL MUNICIPAL ROAD/HIGHWAY RECREATIONAL/SPORTS FIELD BIKE PATH/TRAIL LINEAR UTILITY (water, sewer, gas, etc.) PARKING LOT CLEARING/GRADING ONLY DEMOLITION, NO REDEVELOPMENT WELL DRILLING ACTIVITY *(Oil, Gas, etc.) OTHER Pre-Development Post-Development 4.In accordance with the larger common plan of development or sale, enter the total project site area; the total area to be disturbed; existing impervious area to be disturbed (for redevelopment activities); and the future impervious area constructed within the disturbed area. (Round to the nearest tenth of an acre.) Number of Lots *Note: for gas well drilling, non-high volume hydraulic fractured wells only Total Site Area . Total Area To Be Disturbed . Existing Impervious Area To Be Disturbed . Future Impervious Area Within Disturbed Area . 5. Do you plan to disturb more than 5 acres of soil at any one time?Yes No 6. Indicate the percentage of each Hydrologic Soil Group(HSG) at the site. A B C D %%%% 7. Is this a phased project?Yes No 8. Enter the planned start and end dates of the disturbance activities. - Start Date // End Date // 4107089829 Page 4 of 14 Name 9. Identify the nearest surface waterbody(ies) to which construction site runoff will discharge. 9a.Type of waterbody identified in Question 9? Wetland / State Jurisdiction On Site (Answer 9b) Wetland / State Jurisdiction Off Site Wetland / Federal Jurisdiction On Site (Answer 9b) Wetland / Federal Jurisdiction Off Site Stream / Creek On Site Stream / Creek Off Site River On Site River Off Site Lake On Site Lake Off Site Other Type On Site Other Type Off Site 9b.How was the wetland identified? Regulatory Map Delineated by Consultant Delineated by Army Corps of Engineers Other (identify) Yes No Yes No Yes No 10.Has the surface waterbody(ies) in question 9 been identified as a 303(d) segment in Appendix E of GP-0-20-001? 11.Is this project located in one of the Watersheds identified in Appendix C of GP-0-20-001? 12.Is the project located in one of the watershed areas associated with AA and AA-S classified waters? If no, skip question 13. 13.Does this construction activity disturb land with no existing impervious cover and where the Soil Slope Phase is identified as an E or F on the USDA Soil Survey? If Yes, what is the acreage to be disturbed? Yes No . 14.Will the project disturb soils within a State regulated wetland or the protected 100 foot adjacent area? Yes No 8600089821 15.Does the site runoff enter a separate storm sewer system (including roadside drains, swales, ditches, culverts, etc)? 16.What is the name of the municipality/entity that owns the separate storm sewer system? Yes No Unknown 17.Does any runoff from the site enter a sewer classified as a Combined Sewer?Yes No Unknown 21.Has the required Erosion and Sediment Control component of the SWPPP been developed in conformance with the current NYS Standards and Specifications for Erosion and Sediment Control (aka Blue Book)? 22.Does this construction activity require the development of a SWPPP that includes the post-construction stormwater management practice component (i.e. Runoff Reduction, Water Quality and Quantity Control practices/techniques)? If No, skip questions 23 and 27-39. 23.Has the post-construction stormwater management practice component of the SWPPP been developed in conformance with the current NYS Stormwater Management Design Manual? Yes No Yes No Yes No Page 5 of 14 18.Will future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law?Yes No Yes No 20.Is this a remediation project being done under a Department approved work plan? (i.e. CERCLA, RCRA, Voluntary Cleanup Agreement, etc.) Yes No19.Is this property owned by a state authority, state agency, federal government or local government? 6403089820 Page 6 of 14 SWPPP Preparer Contact Name (Last, Space, First) Mailing Address City State Zip - Phone -- Fax -- Email Signature Date // First Name Last Name MI SWPPP Preparer Certification 24.The Stormwater Pollution Prevention Plan (SWPPP) was prepared by: Professional Engineer (P.E.) Soil and Water Conservation District (SWCD) Registered Landscape Architect (R.L.A) Certified Professional in Erosion and Sediment Control (CPESC) Owner/Operator Other I hereby certify that the Stormwater Pollution Prevention Plan (SWPPP) for this project has been prepared in accordance with the terms and conditions of the GP-0-20-001. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of this permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. 0251089825 26.Select all of the erosion and sediment control practices that will be employed on the project site: Page 7 of 14 Biotechnical Brush Matting Wattling Other 25.Has a construction sequence schedule for the planned management practices been prepared?Yes No Brush Matting Dune Stabilization Grassed Waterway Mulching Protecting Vegetation Recreation Area Improvement Seeding Sodding Straw/Hay Bale Dike Streambank Protection Temporary Swale Topsoiling Vegetating Waterways Vegetative Measures Check Dams Construction Road Stabilization Dust Control Earth Dike Level Spreader Perimeter Dike/Swale Pipe Slope Drain Portable Sediment Tank Rock Dam Sediment Basin Sediment Traps Silt Fence Stabilized Construction Entrance Storm Drain Inlet Protection Straw/Hay Bale Dike Temporary Access Waterway Crossing Temporary Stormdrain Diversion Temporary Swale Turbidity Curtain Water bars Temporary Structural Debris Basin Diversion Grade Stabilization Structure Land Grading Lined Waterway (Rock) Paved Channel (Concrete) Paved Flume Retaining Wall Riprap Slope Protection Rock Outlet Protection Streambank Protection Permanent Structural 0005089822 Page 8 of 14 Post-construction Stormwater Management Practice (SMP) Requirements Important: Completion of Questions 27-39 is not required if response to Question 22 is No. 27.Identify all site planning practices that were used to prepare the final site plan/layout for the project. Preservation of Undisturbed Areas Preservation of Buffers Reduction of Clearing and Grading Locating Development in Less Sensitive Areas Roadway Reduction Sidewalk Reduction Driveway Reduction Cul-de-sac Reduction Building Footprint Reduction Parking Reduction 28.Provide the total Water Quality Volume (WQv) required for this project (based on final site plan/layout). Total WQv Required .acre-feet 29.Identify the RR techniques (Area Reduction), RR techniques(Volume Reduction) and Standard SMPs with RRv Capacity in Table 1 (See Page 9) that were used to reduce the Total WQv Required(#28). Also, provide in Table 1 the total impervious area that contributes runoff to each technique/practice selected. For the Area Reduction Techniques, provide the total contributing area (includes pervious area) and, if applicable, the total impervious area that contributes runoff to the technique/practice. Note:Redevelopment projects shall use Tables 1 and 2 to identify the SMPs used to treat and/or reduce the WQv required. If runoff reduction techniques will not be used to reduce the required WQv, skip to question 33a after identifying the SMPs. 27a.Indicate which of the following soil restoration criteria was used to address the requirements in Section 5.1.6("Soil Restoration") of the Design Manual (2010 version). All disturbed areas Compacted areas will be restored in accordance with the Soil Restoration requirements in Table 5.3 of the Design Manual (see page 5-22). were considered as impervious cover when calculating the WQv Required,and the compacted areas were assigned a post-construction Hydrologic Soil Group (HSG) designation that is one level less permeable than existing conditions for the hydrology analysis. 0182089828 and/or and/or and/or and/or Conservation of Natural Areas (RR-1) Sheetflow to Riparian Tree Planting/Tree Pit (RR-3) Disconnection of Rooftop Runoff (RR-4) Vegetated Swale (RR-5) Rain Garden (RR-6) Stormwater Planter (RR-7) Rain Barrel/Cistern (RR-8) Porous Pavement (RR-9) Green Roof (RR-10) Infiltration Trench (I-1) Infiltration Basin (I-2) Dry Well (I-3) Underground Infiltration System (I-4) Bioretention (F-5) Dry Swale (O-1) Micropool Extended Detention (P-1) Wet Pond (P-2) Wet Extended Detention (P-3) Multiple Pond System (P-4) Pocket Pond (P-5) Surface Sand Filter (F-1) Underground Sand Filter (F-2) Perimeter Sand Filter (F-3) Organic Filter (F-4) Shallow Wetland (W-1) Extended Detention Wetland (W-2) Pond/Wetland System (W-3) Pocket Wetland (W-4) Wet Swale (O-2) . . . . . . . . . . . . . . ............................ .................................. .................................... ............................................. ..................................... ................................ ................................... ......................................... ......................................... ............................. .................................................. .......................................... ............................................... ................................................ RR Techniques (Area Reduction) Total Contributing Impervious Area(acres) . . . . . . . . . . . . . . . ... .......... .......... .. ......................................... ............................................ ..................................... .................................... ........................................ ..................................... ...................................... ................................................ ........................ ............................................ ............................................... Table 1 -Runoff Reduction (RR) Techniques and Standard Stormwater Management Practices (SMPs) RR Techniques (Volume Reduction) Standard SMPs with RRv Capacity Standard SMPs Page 9 of 14 Total Contributing Area (acres) . . . . Buffers/Filters Strips (RR-2) ............................................. 7738089822 . 31.Is the Total RRv provided (#30) greater than or equal to the total WQv required (#28). If Yes, go to question 36. If No, go to question 32. Yes No Total RRv provided 32.Provide the Minimum RRv required based on HSG. [Minimum RRv Required = (P)(0.95)(Ai)/12,Ai=(S)(Aic)] Minimum RRv Required .acre-feet 30.Indicate the Total RRv provided by the RR techniques (Area/Volume Reduction) and Standard SMPs with RRv capacity identified in question 29. acre-feet 32a.Is the Total RRv provided (#30) greater than or equal to the Minimum RRv Required (#32)? If Yes, go to question 33. Note:Use the space provided in question #39 to summarize the specific site limitations and justification for not reducing 100% of WQv required (#28). A detailed evaluation of the specific site limitations and justification for not reducing 100% of the WQv required (#28) must also be included in the SWPPP. If No, sizing criteria has not been met, so NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. Yes No Page 10 of 14 Hydrodynamic Wet Vault Media Filter Other Alternative SMP . . . . ............................................... .................................................. ............................................... .................. Table 2 -Alternative SMPs (DO NOT INCLUDE PRACTICES BEING USED FOR PRETREATMENT ONLY) Note:Redevelopment projects which do not use RR techniques, shall use questions 28, 29, 33 and 33a to provide SMPs used, total WQv required and total WQv provided for the project. Total Contributing Impervious Area(acres) Provide the name and manufacturer of the Alternative SMPs (i.e. proprietary practice(s)) being used for WQv treatment. Name Manufacturer 0762089822 .acre-feet CPv Provided acre-feet. CPv Required 36.Provide the total Channel Protection Storage Volume (CPv) required and provided or select waiver (36a), if applicable. Page 11 of 14 35.Is the sum of the RRv provided (#30) and the WQv provided (#33a) greater than or equal to the total WQv required (#28)? If Yes, go to question 36. If No, sizing criteria has not been met, so NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. .34.Provide the sum of the Total RRv provided (#30) and the WQv provided (#33a). Yes No 33a.Indicate the Total WQv provided (i.e. WQv treated) by the SMPs identified in question #33 and Standard SMPs with RRv Capacity identified in question 29. . WQv Provided acre-feet Note:For the standard SMPs with RRv capacity, the WQv provided by each practice = the WQv calculated using the contributing drainage area to the practice - RRv provided by the practice. (See Table 3.5 in Design Manual) 33.Identify the Standard SMPs in Table 1 and, if applicable, the Alternative SMPs in Table 2 that were used to treat the remaining total WQv(=Total 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 Redevelopment projects. Site discharges directly to tidal waters Reduction of the total CPv is achieved on site 36a. The need to provide channel protection has been waived because: or a fifth order or larger stream. through runoff reduction techniques or infiltration systems. .CFS CFS. Post-developmentPre-Development Total Extreme Flood Control Criteria (Qf) .CFS .CFS Post-developmentPre-Development Total Overbank Flood Control Criteria (Qp) 37.Provide the Overbank Flood (Qp) and Extreme Flood (Qf) control criteria or select waiver (37a), if applicable. 1766089827 Page 12 of 14 39.Use this space to summarize the specific site limitations and justification for not reducing 100% of WQv required(#28). (See question 32a) This space can also be used for other pertinent project information. 38.Has a long term Operation and Maintenance Plan for the post-construction stormwater management practice(s) been developed? If Yes, Identify the entity responsible for the long term Operation and Maintenance Yes No 37a.The need to meet the Qp and Qf criteria has been waived because: Site discharges directly to tidal waters Downstream analysis reveals that the Qp and Qf controls are not required or a fifth order or larger stream. 1310089822 Air Pollution Control Coastal Erosion Hazardous Waste Long Island Wells Mined Land Reclamation Solid Waste Navigable Waters Protection / Article 15 Water Quality Certificate Dam Safety Water Supply Freshwater Wetlands/Article 24 Tidal Wetlands Wild, Scenic and Recreational Rivers Stream Bed or Bank Protection / Article 15 Endangered or Threatened Species(Incidental Take Permit) Individual SPDES SPDES Multi-Sector GP Other None 44.If this NOI is being submitted for the purpose of continuing or transferring coverage under a general permit for stormwater runoff from construction activities, please indicate the former SPDES number assigned. 42.Is this project subject to the requirements of a regulated, traditional land use control MS4? (If No, skip question 43) Yes No 43.Has the "MS4 SWPPP Acceptance" form been signed by the principal executive officer or ranking elected official and submitted along with this NOI? Yes No 41.Does this project require a US Army Corps of Engineers Wetland Permit? If Yes, Indicate Size of Impact. Yes No . Page 13 of 14 40.Identify other DEC permits, existing and new, that are required for this project/facility. 4285089826 Owner/Operator Certification I have read or been advised of the permit conditions and believe that I understand them. I also understand that, under the terms of the permit, there may be reporting requirements. I hereby certify that this document and the corresponding documents were prepared under my direction or supervision. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I further understand that coverage under the general permit will be identified in the acknowledgment that I will receive as a result of submitting this NOI and can be as long as sixty (60) business days as provided for in the general permit. I also understand that, by submitting this NOI, I am acknowledging that the SWPPP has been developed and will be implemented as the first element of construction, and agreeing to comply with all the terms and conditions of the general permit for which this NOI is being submitted. Owner/Operator Signature Date // Print First Name Print Last Name MI Page 14 of 14 3547089826 New York State Department of Environmental Conservation Division of Water 625 Broadway, 4th Floor Albany, New York 12233-3505 *(NOTE: Submit completed form to address above)* 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.Telephone: 4b. Contact Person E-Mail: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/Zip: 8. County: III. Reason for Termination 9a. Ƒ All disturbed areas have achieved final stabilization in accordance with the general permit and SWPPP. *Date final stabilization completed (month/year): 9b. Ƒ 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 I.1. above until new owner/operator obtains coverage under the general permit) 9c. Ƒ Other (Explain on Page 2) IV. Final Site Information: 10a. Did this construction activity require the development of a SWPPP that includes post-construction stormwater management practices? Ƒ yes Ƒ no ( If no, go to question 10f.) 10b. Have all post-construction stormwater management practices included in the final SWPPP been constructed? Ƒ yes Ƒ no (If no, explain on Page 2) 10c. Identify the entity responsible for long-term operation and maintenance of practice(s)? Page 1 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? Ƒ yes Ƒ no 10e. Indicate the method used to ensure long-term operation and maintenance of the post-construction stormwater management practice(s): Ƒ Post-construction stormwater management practice(s) and any right-of-way(s) needed to maintain practice(s) have been deeded to the municipality. Ƒ Executed maintenance agreement is in place with the municipality that will maintain the post-construction stormwater management practice(s). Ƒ For post-construction stormwater management practices that are privately owned, a mechanism is 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. Ƒ For post-construction stormwater management practices that are owned by a public or private institution (e.g. school, university or hospital), government agency or authority, or public utility; 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? Ƒ yes Ƒ no (If Yes, complete section VI - “MS4 Acceptance” statement V. Additional Information/Explanation: (Use this section to answer questions 9c. and 10b., if applicable) VI. MS4 Acceptance - MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative (Note: Not required when 9b. is checked -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 Name: 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 VII. 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 Name: Title/Position: Signature: Date: VIII. Qualified Inspector Certification - Post-construction Stormwater Management Practice(s): I hereby certify that all post-construction stormwater 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 me to criminal, civil and/or administrative proceedings. Printed Name: Title/Position: Signature: Date: (NYS DEC Notice of Termination - January 2015) Page 3 of 3 þ{ËìûtYsËK$TÅTåOTTPPO&TIJNITYÐepartnnent *fHnvlranmantattsnseruatiðnNEW YORK STATEDEPARTMENT OF ENVI RONMENTAL CONSERVATIONSPDES GENERAL PERMITFOR STORMWATER D¡SCHARGESFromCONSTRUCTION ACTIVITYPermit No. GP- 0-20-001lssued Pursuant to Article 17, Titles 7, I and Article 70of the Environmental Conservation LawEffective Date: January 29,2020Expiration Date: January 28,2025John J. FergusonChief Permit Administrator/^ zZ -Z-öuthorized SignatureDateAddress: NYS DECDivision of Environmental Permits625 Broadway, 4th FloorAlbany, N.Y. 12233-1750 I PREFACE Pursuant to Section 402 of the Clean Water Act (“CWA”), 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 administers the approved State Pollutant Discharge Elimination System (SPDES) program with permits issued in accordance with the New York State Environmental Conservation Law (ECL) Article 17, Titles 7, 8 and Article 70. 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 ECL section 17-0505 and 17-0701, the owner or operator must have coverage under a SPDES permit prior to commencing construction activity. The owner or operator cannot wait until there is an actual discharge from the construction site to obtain permit coverage. *Note: The italicized words/phrases within this permit are defined in Appendix A. I NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES Table of Contents Part 1. PERMIT COVERAGE AND LIMITATIONS ............................................................. 1 A. Permit Application ................................................................................................. 1 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. PERMIT COVERAGE ........................................................................................... 12 A. How to Obtain Coverage ..................................................................................... 12 B. Notice of Intent (NOI) Submittal .......................................................................... 13 C. Permit Authorization ............................................................................................ 13 D. General Requirements For Owners or Operators With Permit Coverage ........... 15 E. Permit Coverage for Discharges Authorized Under GP-0-15-002 ....................... 17 F. Change of Owner or Operator ............................................................................. 17 Part III. STORMWATER POLLUTION PREVENTION PLAN (SWPPP) ........................... 18 A. General SWPPP Requirements .......................................................................... 18 B. Required SWPPP Contents ................................................................................ 20 C. Required SWPPP Components by Project Type ................................................. 24 Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS ..................................... 24 A. General Construction Site Inspection and Maintenance Requirements .............. 24 B. Contractor Maintenance Inspection Requirements ............................................. 24 C. Qualified Inspector Inspection Requirements ...................................................... 25 Part V. TERMINATION OF PERMIT COVERAGE ........................................................... 29 A. Termination of Permit Coverage ......................................................................... 29 Part VI. REPORTING AND RETENTION RECORDS ...................................................... 31 A. Record Retention ................................................................................................ 31 B. Addresses ........................................................................................................... 31 Part VII. STANDARD PERMIT CONDITIONS .................................................................. 31 A. Duty to Comply .................................................................................................... 31 B. Continuation of the Expired General Permit ........................................................ 32 C. Enforcement ........................................................................................................ 32 D. Need to Halt or Reduce Activity Not a Defense................................................... 32 E. Duty to Mitigate ................................................................................................... 33 F. Duty to Provide Information ................................................................................. 33 G. Other Information ................................................................................................ 33 H. Signatory Requirements ...................................................................................... 33 I. Property Rights ................................................................................................... 35 J. Severability.......................................................................................................... 35 K. Requirement to Obtain Coverage Under an Alternative Permit ........................... 35 L. Proper Operation and Maintenance .................................................................... 36 M. Inspection and Entry ........................................................................................... 36 N. Permit Actions ..................................................................................................... 37 O. Definitions ........................................................................................................... 37 P. Re-Opener Clause .............................................................................................. 37 Q. Penalties for Falsification of Forms and Reports ................................................. 37 R. Other Permits ...................................................................................................... 38 APPENDIX A – Acronyms and Definitions ....................................................................... 39 Acronyms ...................................................................................................................... 39 Definitions ..................................................................................................................... 40 APPENDIX B – Required SWPPP Components by Project Type .................................... 48 Table 1.......................................................................................................................... 48 Table 2.......................................................................................................................... 50 APPENDIX C – Watersheds Requiring Enhanced Phosphorus Removal ........................ 52 APPENDIX D – Watersheds with Lower Disturbance Threshold ..................................... 58 APPENDIX E – 303(d) Segments Impaired by Construction Related Pollutant(s) ........... 59 APPENDIX F – List of NYS DEC Regional Offices .......................................................... 65 (Part I) 1 Part 1. 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)(14)(x), 122.26(b)(15)(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 I.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 November 2016, using sound engineering judgment. Where control measures are not designed in conformance with the design criteria included in the technical standard, the owner or operator must include in the Stormwater Pollution Prevention Plan (“SWPPP”) the reason(s) for the (Part I.B.1) 2 deviation or alternative design and provide information 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, including both peak flowrates and total stormwater volume, 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; (viii) Unless infeasible, preserve a sufficient amount of topsoil to complete soil restoration and establish a uniform, dense vegetative cover; and (ix) Minimize dust. On areas of exposed soil, minimize dust through the appropriate application of water or other dust suppression techniques to control the generation of pollutants that could be discharged from the site. b. Soil Stabilization. In areas where soil disturbance activity has 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 (Part I.B.1.b) 3 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 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, hazardous and toxic 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; (Part I.B.1.e.iii) 4 (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 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 III.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 4.2 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. (Part I.C.2.a.ii) 5 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 that cannot be reduced shal l 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 (Part I.C.2.b.i) 6 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 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 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. (Part I.C.2.c) 7 c. Sizing Criteria for Redevelopment Activity (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 5.1.6 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 n o 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. (iv) Extreme Flood Control Criteria (Qf): Not required if there are no changes to hydrology that increase the discharge rate from the project site (Part I.C.2.d) 8 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 Comp ilation 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 water 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 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. (Part I.E) 9 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; including stormwater runoff, snowmelt runoff, and surface runoff and drainage, from construction activities. 3. Notwithstanding paragraphs E.1 and E.2 above, the following non-stormwater discharges are authorized by this permit: those listed in 6 NYCRR 750- 1.2(a)(29)(vi), with the following exception: “Discharges from firefighting activities are authorized only when the firefighting activities are emergencies/unplanned”; waters to which other components have not been added that are used to control dust in accordance with the SWPPP ; and uncontaminated discharges from construction site de-watering operations. All non-stormwater discharges must be identified in the SWPPP. Under all circumstances, the owner or operator must still comply with water quality standards in Part I.D 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: 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 (Part I.F.4) 10 operator has obtained a permit issued pursuant to 6 NYCRR Part 182 for the project or the Department has issued a letter of non -jurisdiction for the project. All documentation necessary to demonstrate eligibility shall be maintained on site in accordance with Part II.D.2 of this permit; 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 are undertaken on land with no existing impervious cover; and c. Which disturb one (1) or more acres of land designated on the current United States Department of Agriculture (“USDA”) Soil Survey as Soil Slope Phase “D”, (provided the map unit name is inclusive of slopes greater than 25%), or Soil Slope Phase “E” or “F” (regardless of the map unit name), or a combination of the three designations. 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 are undertaken on land with no existing impervious cover; and c. Which disturb two (2) or more acres of land designated on the current USDA Soil Survey as Soil Slope Phase “D” (provided the map unit name is inclusive of slopes greater than 25%), or Soil Slope Phase “E” or “F” (regardless of the map unit name), or a combination of the three designations. (Part I.F.8) 11 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.D.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. ▪ 1-5 acres of disturbance - 20 feet ▪ 5-20 acres of disturbance - 50 feet ▪ 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: (Part I.F.8.c) 12 (i) No Affect (ii) No Adverse Affect (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. PERMIT COVERAGE A. How to Obtain Coverage 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 Notice of Intent (NOI) to the Department to be authorized to discharge under this permit. 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 the 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. 3. The requirement for an owner or operator to have its SWPPP reviewed and accepted by the regulated, traditional land use control 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.F. (Change of Owner or Operator) or where the owner or operator of the construction activity is the regulated, traditional land use control MS4 . This exemption does not apply to construction activities subject to the New York City Administrative Code. (Part II.B) 13 B. Notice of Intent (NOI) Submittal 1. Prior to December 21, 2020, 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://www.dec.ny.gov/ ). The paper version of the NOI shall be signed in accordance with Part VII.H. of this permit and submitted to the following address: NOTICE OF INTENT NYS DEC, Bureau of Water Permits 625 Broadway, 4th Floor Albany, New York 12233-3505 2. Beginning December 21, 2020 and in accordance with EPA’s 2015 NPDES Electronic Reporting Rule (40 CFR Part 127), the owner or operator must submit the NOI electronically using the Department’s online NOI. 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. C. 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), or the equivalent from another New York State agency, have been obtained, unless otherwise notified by the Department pursuant to 6 NYCRR 621.3(a)(4). Owners or operators of construction activities that are required to obtain UPA permits (Part II.C.2.b) 14 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.C.2 above 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 (eNOI) for construction activities with a SWPPP that has been prepared in conformance with the design criteria in the technical standard referenced in Part III.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 III.B.1. or, for construction activities that require post-construction stormwater management practices pursuant to Part III.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 III.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. (Part II.C.3.b) 15 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. 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 II.C. of this permit. D. 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-0-20- 001), NOI, NOI Acknowledgment Letter, SWPPP, MS4 SWPPP Acceptance form, inspection reports, responsible contractor’s or subcontractor’s certification statement (see Part III.A.6.), 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 (Part II.D.3) 16 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 fi ve (5) acres of soil at any one time: a. The owner or operator shall 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 November 2016. 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 or consistent with Part VII.K.. 5. 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. 6. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4, the owner or operator shall notify the (Part II.D.6) 17 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 III.A. 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. E. Permit Coverage for Discharges Authorized Under GP-0-15-002 1. Upon renewal of SPDES General Permit for Stormwater Discharges from Construction Activity (Permit No. GP-0-15-002), an owner or operator of a construction activity with coverage under GP-0-15-002, as of the effective date of GP- 0-20-001, shall be authorized to discharge in accordance with GP- 0-20- 001, 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-0-20-001. F. Change of Owner or Operator 1. 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. For construction activities subject to the requirements of a regulated, traditional land use control MS4, the original owner or operator must also notify the MS4, in writing, of the change in ownership at least 30 calendar days prior to the change in ownership. 2. Once the new owner or operator obtains permit coverage, the original owner or operator shall 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.B.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. 3. 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 (Part II.F.3) 18 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. 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, including construction drawings: a. whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharges from the site; (Part III.A.4.b) 19 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; c. to address issues or deficiencies identified during an inspection by the qualified inspector, the Department or other regulatory authority; and d. to document the final construction conditions. 5. The Department may notify the owner or operator at any time that the SWPPP does not meet one or more of the minimum requirements of this permit. The notification shall be in writing and identify the provisions of the SWPPP that require modification. Within fourteen (14) calendar days of such notificati on, 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.D.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: "I hereby certify under penalty of law that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with (Part III.A.6) 20 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 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 November 2016. 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 (Part III.B.1.b) 21 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); floodplain/floodway boundaries; wetlands and drainage patterns that could be affected by the construction activity; existing and final contours ; locations of different soil types with boundaries; material, waste, borrow or equipment storage areas located on adjacent properties; and location(s) of the stormwater discharge(s); 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 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 November 2016, 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 (Part III.B.1.i) 22 schedule shall be in accordance with the requirements in the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated November 2016; 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 l. 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 November 2016. Include the reason for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. 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; (Part III.B.2.b) 23 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 watershed/subcatchments boundaries, flow paths/routing, and design points; (ii) Map(s) showing post-development conditions, including watershed/subcatchments 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 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 alt ernative 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. (Part III.B.3) 24 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 III.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. 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 (Part IV.B.1) 25 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.B.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 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 order to perform these inspections, the trained contractor would have to be a: ▪ licensed Professional Engineer, ▪ Certified Professional in Erosion and Sediment Control (CPESC), ▪ New York State Erosion and Sediment Control Certificate Program holder ▪ 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 (Part IV.C.1.a) 26 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 the owner or operator has received authorization in accordance with Part II.D.3 to disturb greater than five (5) acres of soil at any one time, the qualified inspector shall conduct at least 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. (Part IV.C.2.d) 27 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.B.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 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 includ e and/or address the following: (Part IV.C.4.a) 28 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; i. 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 (Part IV.C.4.l) 29 l. 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 III.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.D.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.B.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. 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; (Part V.A.2.b) 30 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.F. 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 Part 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. 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, (Part V.A.5.b) 31 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 RECORDS A. Record Retention The owner or operator shall retain a copy of the NOI, NOI 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 sub mitted 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.B.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. 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 (Part VII.A) 32 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 Reg ional 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 $37,500 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. (Part VII.E) 33 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. th e 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 ar ea 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 II.A. 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 NOIs 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: (Part VII.H.1.a) 34 (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision-making functions for the corporation; or (ii) the manager of one or more manufacturing, production or operating facilities, provided the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for 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. For a 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, (Part VII.H.2.b) 35 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 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 reg ulations. 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 (Part VII.K.1) 36 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 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 SW PPP. 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 k ept 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 (Part VII.M.3) 37 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. 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 ECL §71-1933 and or Articles 175 and 210 of the New York State Penal Law. (Part VII.R) 38 R. Other Permits Nothing in this permit relieves the owner or operator from a requirement to obtain any other permits required by law. 39 APPENDIX A – Acronyms and Definitions Acronyms APO – Agency Preservation Officer BMP – Best Management Practice CPESC – Certified Professional in Erosion and Sediment Control Cpv – Channel Protection Volume CWA – Clean Water Act (or the Federal Water Pollution Control Act, 33 U.S.C. §1251 et seq) DOW – Division of Water EAF – Environmental Assessment Form ECL - Environmental Conservation Law EPA – U. S. Environmental Protection Agency HSG – Hydrologic Soil Group MS4 – Municipal Separate Storm Sewer System NOI – Notice of Intent NOT – Notice of Termination NPDES – National Pollutant Discharge Elimination System OPRHP – Office of Parks, Recreation and Historic Places Qf – Extreme Flood Qp – Overbank Flood RRv – Runoff Reduction Volume RWE – Regional Water Engineer SEQR – State Environmental Quality Review SEQRA - State Environmental Quality Review Act SHPA – State Historic Preservation Act SPDES – State Pollutant Discharge Elimination System SWPPP – Stormwater Pollution Prevention Plan TMDL – Total Maximum Daily Load UPA – Uniform Procedures Act USDA – United States Department of Agriculture WQv – Water Quality Volume Appendix A 40 Definitions All definitions in this section are solely for the purposes of this permit. Agricultural Building – a structure designed and constructed to house farm implements, hay, grain, poultry, livestock or other horticultural products; excluding any structure designed, constructed or used, in whole or in part, for human habitation, as a place of employment where agricultural products are processed, treated or packaged, or as a place used by the public. Agricultural Property –means the land for construction of a barn, agricultural building, silo, stockyard, pen or other structural practices identified in Table II in the “Agricultural Management Practices Catalog for Nonpoint Source Pollution in New York State” prepared by the Department in cooperation with agencies of New York Nonpoint Source Coordinating Committee (dated June 2007). 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 activit ies; 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. Construction Site – means the land area where construction activity(ies) will occur. See definition for “Commence (Commencement of) Construction Activities” and “Larger Common Plan of Development or Sale” also. Dewatering – means the act of draining rainwater and/or groundwater from building foundations, vaults or excavations/trenches. 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 Appendix A 41 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. Embankment –means an earthen or rock slope that supports a road/highway. Endangered or Threatened Species – see 6 NYCRR Part 182 of the Department’s rules and regulations for definition of terms and requirements. 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 on all disturbed areas that are not covered by permanent structures, concrete or pavement. General SPDES permit - means a SPDES permit issued pursuant to 6 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. Appendix A 42 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 1/4 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, 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). Natural Buffer –means an undisturbed area with natural cover running along a surface water (e.g. wetland, stream, river, lake, etc.). New Development – means any land disturbance that does not meet the definition of Redevelopment Activity included in this appendix. Appendix A 43 New York State Erosion and Sediment Control Certificate Program – a certificate program that establishes and maintains a process to identify and recognize individuals who are capable of developing, designing, inspecting and maintaining erosion and sediment control plans on projects that disturb soils in New York State. The certificate program is administered by the New York State Conservation District Employees Association. 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. Nonpoint Source - means any source of water pollution or pollutants which is not a discrete conveyance or point source permitted pursuant to Title 7 or 8 of Article 17 of the Environmental Conservation Law (see ECL Section 17-1403). Overbank –means flow events that exceed the capacity of the stream channel and spill out into the adjacent floodplain. Owner or Operator - means the person, persons or legal entity which owns or leases the property on which the construction activity is occurring; an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications; and/or an entity that has day-to-day operational control of those activities at a project that are necessary to ensure compliance with the permit conditions. 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 Qf ) in Part I.C.2. of the permit. Point Source - means any discernible, confined and discrete conveyance, including but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, vessel or other floating craft, or landfill leachate collection system from which pollutants are or may be discharged. Pollutant - 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 . Appendix A 44 Qualified Inspector - means a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder or other Department endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department en dorsed 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 authorized to discharge under New York State DEC’s Appendix A 45 SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (MS4s) or the City of New York’s Individual SPDES Permit for their Municipal Separate Storm Sewer Systems (NY-0287890). 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, ▪ 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 stabilizes 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. Appendix A 46 Steep Slope – means land area designated on the current United States Department of Agriculture (“USDA”) Soil Survey as Soil Slope Phase “D”, (provided the map unit name is inclusive of slopes greater than 25%) , or Soil Slope Phase E or F, (regardless of the map unit name), or a combination of the three designations. Streambank – as used in this permit, means the terrain alongside the bed of a creek or stream. The bank consists of the sides of the channel, between which the flow is confined. Stormwater Pollution Prevention Plan (SWPPP) – means a project specific report, including construction drawings, that among other things: describes the construction activity(ies), identifies the potential sources of pollution at the construction site; describes and shows the stormwater controls that will be used to control the pollutants (i.e. erosion and sediment controls; for many projects, includes post-construction stormwater management controls); and identifies procedures the owner or operator will implement to comply with the terms and conditions of the permit. See Part III of the permit for a complete description of the information that must be included in the SWPPP. Surface Waters of the State - shall be construed to include lakes, bays, sounds, ponds, impounding reservoirs, springs, rivers, streams, creeks, estuaries, marshes, inlets, canals, the Atlantic ocean within the territorial seas of the state of New York and all other bodies of surface water, natural or artificial, inland or coastal, fresh or salt, public or private (except those private waters that do not combine or effect a junction with natural surface waters), which are wholly or partially within or bordering the state or within its jurisdiction. Waters of the state are further defined in 6 NYCRR Parts 800 to 941. Temporarily Ceased – 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 water 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 III.A.6., that has received four (4) hours of Department endorsed Appendix A 47 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, New York State Erosion and Sediment Control Certificate Program holder, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of 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 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. 48 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(d) 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 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. 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 • Pond construction • Linear bike paths running through areas with vegetative cover, including bike paths surfaced with an impervious cover • Cross-country ski trails and walking/hiking trails • Sidewalk, bike path or walking path projects, surfaced with an impervious cover, that are not part of residential, commercial or institutional development; • Sidewalk, bike path or walking path projects, surfaced with an impervious cover, that include incidental shoulder or curb work along an existing highway to support construction of the sidewalk, bike path or walking path. • Slope stabilization projects • Slope flattening that changes the grade of the site, but does not significantly change the runoff characteristics Appendix B 49 Table 1 (Continued) 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: • Spoil areas that will be covered with vegetation • Vegetated open space projects (i.e. recreational parks, lawns, meadows, fields, downhill ski trails) 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 f or Nonpoint Source Pollution in New York State”, excluding projects that involve soil disturbances of greater than five acres and construction activities that include the construction or reconstruction of impervious area • Temporary access roads, median crossovers, detour roads, lanes, or other temporary impervious areas that will be restored to pre-construction conditions once the construction activit y is complete Appendix B 50 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 (1) 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 home that disturbs five (5) or more acres of land • Single family residential subdivisions located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d) segments listed in Appendix 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 duplexes, townhomes, condominiums, senior housing complexes, apartment complexes, and mobile home parks • Airports • Amusement parks • Breweries, cideries, and wineries, including establishments constructed on agricultural land • Campgrounds • Cemeteries that include the construction or reconstruction of impervious area (>5% of disturbed area) or alter the hydrology from pre to post development conditions • Commercial developments • Churches and other places of worship • Construction of a barn or other agricultural building (e.g. silo) 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 development; includes hospitals, prisons, schools and colleges • Industrial facilities; includes industrial parks • Landfills • Municipal facilities; includes highway garages, transfer stations, office buildings, POTW’s, water treatment plants, and water storage tanks • Office complexes • Playgrounds that include the construction or reconstruction of impervious area • Sports complexes • Racetracks; includes racetracks with earthen (dirt) surface • Road construction or reconstruction, including roads constructed as part of the construction activities listed in Table 1 Appendix B 51 Table 2 (Continued) 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 (1) or more acres of land: • Parking lot construction or reconstruction, including parking lots constructed as part of the construction activities listed in Table 1 • 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 • Sidewalk, bike path or walking path projects, surfaced with an impervious cover, that are part of a residential, commercial or institutional development • Sidewalk, bike path or walking path projects, surfaced with an impervious cover, that are part of a highway construction or reconstruction 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 Table 1 52 APPENDIX C – Watersheds Requiring Enhanced Phosphorus Removal Watersheds where owners or operators of construction activities identified in Table 2 of Appendix B must prepare a SWPPP that includes 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 Appendix C 53 Figure 1 - New York City Watershed East of the Hudson Appendix C 54 Figure 2 - Onondaga Lake Watershed Appendix C 55 Figure 3 - Greenwood Lake Watershed Appendix C 56 Figure 4 - Oscawana Lake Watershed Appendix C 57 Figure 5 - Kinderhook Lake Watershed 58 APPENDIX D – Watersheds with Lower Disturbance Threshold Watersheds where owners or operators of construction activities that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land must obtain coverage under this permit. Entire New York City Watershed that is located east of the Hudson River - See Figure 1 in Appendix C 59 APPENDIX E – 303(d) Segments Impaired by Construction Related Pollutant(s) List of 303(d) segments impaired by pollutants related to construction activity (e.g. silt, sediment or nutrients). The list was developed using ”The Final New York State 2016 Section 303(d) List of Impaired Waters Requiring a TMDL/Other Strategy” dated November 2016. 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 POLLUTANT Albany Ann Lee (Shakers) Pond, Stump Pond Nutrients Albany Basic Creek Reservoir Nutrients Allegany Amity Lake, Saunders Pond Nutrients Bronx Long Island Sound, Bronx Nutrients Bronx Van Cortlandt Lake Nutrients Broome Fly Pond, Deer Lake, Sky Lake Nutrients Broome Minor Tribs to Lower Susquehanna (north) Nutrients Broome Whitney Point Lake/Reservoir Nutrients Cattaraugus Allegheny River/Reservoir Nutrients Cattaraugus Beaver (Alma) Lake Nutrients Cattaraugus Case Lake Nutrients Cattaraugus Linlyco/Club Pond Nutrients Cayuga Duck Lake Nutrients Cayuga Little Sodus Bay Nutrients Chautauqua Bear Lake Nutrients Chautauqua Chadakoin River and tribs Nutrients Chautauqua Chautauqua Lake, North Nutrients Chautauqua Chautauqua Lake, South Nutrients Chautauqua Findley Lake Nutrients Chautauqua Hulburt/Clymer Pond Nutrients Clinton Great Chazy River, Lower, Main Stem Silt/Sediment Clinton Lake Champlain, Main Lake, Middle Nutrients Clinton Lake Champlain, Main Lake, North Nutrients Columbia Kinderhook Lake Nutrients Columbia Robinson Pond Nutrients Cortland Dean Pond Nutrients 303(d) Segments Impaired by Construction Related Pollutant(s) 60 Dutchess Fall Kill and tribs Nutrients Dutchess Hillside Lake Nutrients Dutchess Wappingers Lake Nutrients Dutchess Wappingers Lake Silt/Sediment Erie Beeman Creek and tribs Nutrients Erie Ellicott Creek, Lower, and tribs Silt/Sediment Erie Ellicott Creek, Lower, and tribs Nutrients Erie Green Lake Nutrients Erie Little Sister Creek, Lower, and tribs Nutrients Erie Murder Creek, Lower, and tribs Nutrients Erie Rush Creek and tribs Nutrients Erie Scajaquada Creek, Lower, and tribs Nutrients Erie Scajaquada Creek, Middle, and tribs Nutrients Erie Scajaquada Creek, Upper, and tribs Nutrients Erie South Branch Smoke Cr, Lower, and tribs Silt/Sediment Erie South Branch Smoke Cr, Lower, and tribs Nutrients Essex Lake Champlain, Main Lake, South Nutrients Essex Lake Champlain, South Lake Nutrients Essex Willsboro Bay Nutrients Genesee Bigelow Creek and tribs Nutrients Genesee Black Creek, Middle, and minor tribs Nutrients Genesee Black Creek, Upper, and minor tribs Nutrients Genesee Bowen Brook and tribs Nutrients Genesee LeRoy Reservoir Nutrients Genesee Oak Orchard Cr, Upper, and tribs Nutrients Genesee Tonawanda Creek, Middle, Main Stem Nutrients Greene Schoharie Reservoir Silt/Sediment Greene Sleepy Hollow Lake Silt/Sediment Herkimer Steele Creek tribs Silt/Sediment Herkimer Steele Creek tribs Nutrients Jefferson Moon Lake Nutrients Kings Hendrix Creek Nutrients Kings Prospect Park Lake Nutrients Lewis Mill Creek/South Branch, and tribs Nutrients Livingston Christie Creek and tribs Nutrients Livingston Conesus Lake Nutrients Livingston Mill Creek and minor tribs Silt/Sediment Monroe Black Creek, Lower, and minor tribs Nutrients Monroe Buck Pond Nutrients Monroe Cranberry Pond Nutrients 303(d) Segments Impaired by Construction Related Pollutant(s) 61 Monroe Lake Ontario Shoreline, Western Nutrients Monroe Long Pond Nutrients Monroe Mill Creek and tribs Nutrients Monroe Mill Creek/Blue Pond Outlet and tribs Nutrients Monroe Minor Tribs to Irondequoit Bay Nutrients Monroe Rochester Embayment - East Nutrients Monroe Rochester Embayment - West Nutrients Monroe Shipbuilders Creek and tribs Nutrients Monroe Thomas Creek/White Brook and tribs Nutrients Nassau Beaver Lake Nutrients Nassau Camaans Pond Nutrients Nassau East Meadow Brook, Upper, and tribs Silt/Sediment Nassau East Rockaway Channel Nutrients Nassau Grant Park Pond Nutrients Nassau Hempstead Bay Nutrients Nassau Hempstead Lake Nutrients Nassau Hewlett Bay Nutrients Nassau Hog Island Channel Nutrients Nassau Long Island Sound, Nassau County Waters Nutrients Nassau Massapequa Creek and tribs Nutrients Nassau Milburn/Parsonage Creeks, Upp, and tribs Nutrients Nassau Reynolds Channel, west Nutrients Nassau Tidal Tribs to Hempstead Bay Nutrients Nassau Tribs (fresh) to East Bay Nutrients Nassau Tribs (fresh) to East Bay Silt/Sediment Nassau Tribs to Smith/Halls Ponds Nutrients Nassau Woodmere Channel Nutrients New York Harlem Meer Nutrients New York The Lake in Central Park Nutrients Niagara Bergholtz Creek and tribs Nutrients Niagara Hyde Park Lake Nutrients Niagara Lake Ontario Shoreline, Western Nutrients Niagara Lake Ontario Shoreline, Western Nutrients Oneida Ballou, Nail Creeks and tribs Nutrients Onondaga Harbor Brook, Lower, and tribs Nutrients Onondaga Ley Creek and tribs Nutrients Onondaga Minor Tribs to Onondaga Lake Nutrients Onondaga Ninemile Creek, Lower, and tribs Nutrients Onondaga Onondaga Creek, Lower, and tribs Nutrients Onondaga Onondaga Creek, Middle, and tribs Nutrients 303(d) Segments Impaired by Construction Related Pollutant(s) 62 Onondaga Onondaga Lake, northern end Nutrients Onondaga Onondaga Lake, southern end Nutrients Ontario Great Brook and minor tribs Silt/Sediment Ontario Great Brook and minor tribs Nutrients Ontario Hemlock Lake Outlet and minor tribs Nutrients Ontario Honeoye Lake Nutrients Orange Greenwood Lake Nutrients Orange Monhagen Brook and tribs Nutrients Orange Orange Lake Nutrients Orleans Lake Ontario Shoreline, Western Nutrients Orleans Lake Ontario Shoreline, Western Nutrients Oswego Lake Neatahwanta Nutrients Oswego Pleasant Lake Nutrients Putnam Bog Brook Reservoir Nutrients Putnam Boyd Corners Reservoir Nutrients Putnam Croton Falls Reservoir Nutrients Putnam Diverting Reservoir Nutrients Putnam East Branch Reservoir Nutrients Putnam Lake Carmel Nutrients Putnam Middle Branch Reservoir Nutrients Putnam Oscawana Lake Nutrients Putnam Palmer Lake Nutrients Putnam West Branch Reservoir Nutrients Queens Bergen Basin Nutrients Queens Flushing Creek/Bay Nutrients Queens Jamaica Bay, Eastern, and tribs (Queens) Nutrients Queens Kissena Lake Nutrients Queens Meadow Lake Nutrients Queens Willow Lake Nutrients Rensselaer Nassau Lake Nutrients Rensselaer Snyders Lake Nutrients Richmond Grasmere Lake/Bradys Pond Nutrients Rockland Congers Lake, Swartout Lake Nutrients Rockland Rockland Lake Nutrients Saratoga Ballston Lake Nutrients Saratoga Dwaas Kill and tribs Silt/Sediment Saratoga Dwaas Kill and tribs Nutrients Saratoga Lake Lonely Nutrients Saratoga Round Lake Nutrients Saratoga Tribs to Lake Lonely Nutrients 303(d) Segments Impaired by Construction Related Pollutant(s) 63 Schenectady Collins Lake Nutrients Schenectady Duane Lake Nutrients Schenectady Mariaville Lake Nutrients Schoharie Engleville Pond Nutrients Schoharie Summit Lake Nutrients Seneca Reeder Creek and tribs Nutrients St.Lawrence Black Lake Outlet/Black Lake Nutrients St.Lawrence Fish Creek and minor tribs Nutrients Steuben Smith Pond Nutrients Suffolk Agawam Lake Nutrients Suffolk Big/Little Fresh Ponds Nutrients Suffolk Canaan Lake Silt/Sediment Suffolk Canaan Lake Nutrients Suffolk Flanders Bay, West/Lower Sawmill Creek Nutrients Suffolk Fresh Pond Nutrients Suffolk Great South Bay, East Nutrients Suffolk Great South Bay, Middle Nutrients Suffolk Great South Bay, West Nutrients Suffolk Lake Ronkonkoma Nutrients Suffolk Long Island Sound, Suffolk County, West Nutrients Suffolk Mattituck (Marratooka) Pond Nutrients Suffolk Meetinghouse/Terrys Creeks and tribs Nutrients Suffolk Mill and Seven Ponds Nutrients Suffolk Millers Pond Nutrients Suffolk Moriches Bay, East Nutrients Suffolk Moriches Bay, West Nutrients Suffolk Peconic River, Lower, and tidal tribs Nutrients Suffolk Quantuck Bay Nutrients Suffolk Shinnecock Bay and Inlet Nutrients Suffolk Tidal tribs to West Moriches Bay Nutrients Sullivan Bodine, Montgomery Lakes Nutrients Sullivan Davies Lake Nutrients Sullivan Evens Lake Nutrients Sullivan Pleasure Lake Nutrients Tompkins Cayuga Lake, Southern End Nutrients Tompkins Cayuga Lake, Southern End Silt/Sediment Tompkins Owasco Inlet, Upper, and tribs Nutrients Ulster Ashokan Reservoir Silt/Sediment Ulster Esopus Creek, Upper, and minor tribs Silt/Sediment Warren Hague Brook and tribs Silt/Sediment 303(d) Segments Impaired by Construction Related Pollutant(s) 64 Warren Huddle/Finkle Brooks and tribs Silt/Sediment Warren Indian Brook and tribs Silt/Sediment Warren Lake George Silt/Sediment Warren Tribs to L.George, Village of L George Silt/Sediment Washington Cossayuna Lake Nutrients Washington Lake Champlain, South Bay Nutrients Washington Tribs to L.George, East Shore Silt/Sediment Washington Wood Cr/Champlain Canal and minor tribs Nutrients Wayne Port Bay Nutrients Westchester Amawalk Reservoir Nutrients Westchester Blind Brook, Upper, and tribs Silt/Sediment Westchester Cross River Reservoir Nutrients Westchester Lake Katonah Nutrients Westchester Lake Lincolndale Nutrients Westchester Lake Meahagh Nutrients Westchester Lake Mohegan Nutrients Westchester Lake Shenorock Nutrients Westchester Long Island Sound, Westchester (East) Nutrients Westchester Mamaroneck River, Lower Silt/Sediment Westchester Mamaroneck River, Upper, and minor tribs Silt/Sediment Westchester Muscoot/Upper New Croton Reservoir Nutrients Westchester New Croton Reservoir Nutrients Westchester Peach Lake Nutrients Westchester Reservoir No.1 (Lake Isle) Nutrients Westchester Saw Mill River, Lower, and tribs Nutrients Westchester Saw Mill River, Middle, and tribs Nutrients Westchester Sheldrake River and tribs Silt/Sediment Westchester Sheldrake River and tribs Nutrients Westchester Silver Lake Nutrients Westchester Teatown Lake Nutrients Westchester Titicus Reservoir Nutrients Westchester Truesdale Lake Nutrients Westchester Wallace Pond Nutrients Wyoming Java Lake Nutrients Wyoming Silver Lake Nutrients 65 APPENDIX F – List of NYS DEC Regional Offices Region COVERING THE FOLLOWING COUNTIES: DIVISION OF ENVIRONMENTAL PERMITS (DEP) PERMIT ADMINISTRATORS DIVISION OF WATER (DOW) WATER (SPDES) PROGRAM 1 NASSAU AND SUFFOLK 50 CIRCLE ROAD STONY BROOK, NY 11790 TEL. (631) 444-0365 50 CIRCLE ROAD STONY BROOK, NY 11790-3409 TEL. (631) 444-0405 2 BRONX, KINGS, NEW YORK, QUEENS AND RICHMOND 1 HUNTERS POINT PLAZA, 47-40 21ST ST. LONG ISLAND CITY, NY 11101-5407 TEL. (718) 482-4997 1 HUNTERS POINT PLAZA, 47-40 21ST ST. LONG ISLAND CITY, NY 11101-5407 TEL. (718) 482-4933 3 DUTCHESS, ORANGE, PUTNAM, ROCKLAND, SULLIVAN, ULSTER AND WESTCHESTER 21 SOUTH PUTT CORNERS ROAD NEW PALTZ, NY 12561-1696 TEL. (845) 256-3059 100 HILLSIDE AVENUE, SUITE 1W WHITE PLAINS, NY 10603 TEL. (914) 428 - 2505 4 ALBANY, COLUMBIA, DELAWARE, GREENE, MONTGOMERY, OTSEGO, RENSSELAER, SCHENECTADY AND SCHOHARIE 1150 NORTH WESTCOTT ROAD SCHENECTADY, NY 12306-2014 TEL. (518) 357-2069 1130 NORTH WESTCOTT ROAD SCHENECTADY, NY 12306-2014 TEL. (518) 357-2045 5 CLINTON, ESSEX, FRANKLIN, FULTON, HAMILTON, SARATOGA, WARREN AND WASHINGTON 1115 STATE ROUTE 86, PO BOX 296 RAY BROOK, NY 12977-0296 TEL. (518) 897-1234 232 GOLF COURSE ROAD WARRENSBURG, NY 12885-1172 TEL. (518) 623-1200 6 HERKIMER, JEFFERSON, LEWIS, ONEIDA AND ST. LAWRENCE STATE OFFICE BUILDING 317 WASHINGTON STREET WATERTOWN, NY 13601-3787 TEL. (315) 785-2245 STATE OFFICE BUILDING 207 GENESEE STREET UTICA, NY 13501-2885 TEL. (315) 793-2554 7 BROOME, CAYUGA, CHENANGO, CORTLAND, MADISON, ONONDAGA, OSWEGO, TIOGA AND TOMPKINS 615 ERIE BLVD. WEST SYRACUSE, NY 13204-2400 TEL. (315) 426-7438 615 ERIE BLVD. WEST SYRACUSE, NY 13204-2400 TEL. (315) 426-7500 8 CHEMUNG, GENESEE, LIVINGSTON, MONROE, ONTARIO, ORLEANS, SCHUYLER, SENECA, STEUBEN, WAYNE AND YATES 6274 EAST AVON-LIMA ROADAVON, NY 14414-9519 TEL. (585) 226-2466 6274 EAST AVON-LIMA RD. AVON, NY 14414-9519 TEL. (585) 226-2466 9 ALLEGANY, CATTARAUGUS, CHAUTAUQUA, ERIE, NIAGARA AND WYOMING 270 MICHIGAN AVENUE BUFFALO, NY 14203-2999 TEL. (716) 851-7165 270 MICHIGAN AVENUE BUFFALO, NY 14203-2999 TEL. (716) 851-7070 JARRETT Engineers, PLLC Civil Environmental Engineering 1-Pre Construction actions 1. establish construction entrance at driveway location. 2. Silt fence is to be placed to keep sediment on site See Site Plan Drawings Day 1 of construction See written report 2-Runoff & Drainage Control 1. Rough in stormwater devices. See Site Plan Drawings Day 2 - 5 of construction See written report 3- Grading 1. Temporary stock pile areas to be established for on site material to be reused See Site Plan Grading Day 2 - 5 of construction See written report 4- Erosion Control 1. Stabilize stock piles with mulch or temporary seeding if construction ceases for more than 14 days See Site Plan Drawings Day 2 - 5 of construction See written report 5- Sediment Control 1. Silt fence to be placed to keep sediment on site. See Site Plan Drawings Day 1 - end of construction See written report 6- Maintenance Inspection & Plan Update 1. site inspections to be completed every 7 days or after 1/2" of rain See SWPPP Throughout entire construction See written report 7- Finalize Grading & Landscaping 1. Finalize site grading 2. remove all temporary sediment control measures 3. stabilize all disturbed areas within 14 days (seed & mulch) See Site Plan Drawings 1 - 10 days prior to end of site construction See written report 8- Post- construction Stormwater Management 1. Operator is to inspect the stormwater controls as outlined in the maintenance inspection checklist. See SWPPP 1 - 2 days prior to end of site construction See written report Type Activities (identify name of planned practices )Map Symbols Maintenance ActionsSchedule Construction Sequence Schedule 12 East Washington Street Glens Falls, NY 12801 518-792-2907 JARRETT Engineers, PLLC Civil Environmental Engineering Project Name:Residential Site Development Date: 6/14/22 Client:James Brown Project # JE:21-008 Pre-existing Site Conditions Post-Construction Conditions: Design Storm Rate (cfs) Volume (acre feet)Design Storm Rate (cfs) Volume (acre feet) 25 YR 30.40 2.012 25 YR 30.40 1.437 Pre vs. Post Construction Stormwater Comparsion 12 East Washington Street Glens Falls, NY 12801 518-792-2907 Pre DevelopmentPost DevelopmentPost Nrth APost Sub North A for North DrivewayPost Nrth A'Post Sub North A' for North DrivewayPost South 1Post Sub South 1 for Middle DrivewayPost South 2Post Sub South 2 for South DrivewayPost South 3Post Sub South 3 for HousePre NPre Sub NorthPre SPre SouthARain Garden AA'Rain Garden A'BRain Garden BCRain Garden CDRain Garden D for HousePostTotal Post Develpment RunoffPreTotal Pre-development RunoffRouting Diagram for 21008 220607 HydroCadPrepared by JARRETT Engineers, PLLC, Printed 6/15/2022HydroCAD® 10.00-25 s/n 01268 © 2019 HydroCAD Software Solutions LLCSubcatReachPondLink 21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment‐numbers) 15.062 70 Woods, Good, HSG C (Pre N, Pre S) 15.062 70 TOTAL AREA Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Subcatchment Pre N: Pre Sub North Runoff = 21.02 cfs @ 12.08 hrs, Volume= 1.378 af, Depth= 1.60" Runoff by SCS TR‐20 method, UH=SCS, Weighted‐CN, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Type II 24‐hr 25‐Year Rainfall=4.40" Area (sf) CN Description 449,200 70 Woods, Good, HSG C 449,200 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.8 100 0.4000 0.13 Sheet Flow, Upper Reach Woods: Dense underbrush n= 0.800 P2= 2.50" 2.1 400 0.4000 3.16 Shallow Concentrated Flow, Shallow rivulets Woodland Kv= 5.0 fps 14.9 500 Total Subcatchment Pre N: Pre Sub North Runoff Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 25-Year Rainfall=4.40" Runoff Area=449,200 sf Runoff Volume=1.378 af Runoff Depth=1.60" Flow Length=500' Slope=0.4000 '/' Tc=14.9 min CN=70 21.02 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Subcatchment Pre S: Pre South Runoff = 9.43 cfs @ 12.09 hrs, Volume= 0.635 af, Depth= 1.60" Runoff by SCS TR‐20 method, UH=SCS, Weighted‐CN, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Type II 24‐hr 25‐Year Rainfall=4.40" Area (sf) CN Description 206,880 70 Woods, Good, HSG C 206,880 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.3 100 0.3000 0.12 Sheet Flow, Upper Reaches Woods: Dense underbrush n= 0.800 P2= 2.50" 1.4 230 0.3000 2.74 Shallow Concentrated Flow, Shallow rivulets Woodland Kv= 5.0 fps 15.7 330 Total Subcatchment Pre S: Pre South Runoff Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 25-Year Rainfall=4.40" Runoff Area=206,880 sf Runoff Volume=0.635 af Runoff Depth=1.60" Flow Length=330' Slope=0.3000 '/' Tc=15.7 min CN=70 9.43 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Link Pre: Total Pre‐development Runoff Inflow Area = 15.062 ac, 0.00% Impervious, Inflow Depth = 1.60" for 25‐Year event Inflow = 30.40 cfs @ 12.08 hrs, Volume= 2.012 af Primary = 30.40 cfs @ 12.08 hrs, Volume= 2.012 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Link Pre: Total Pre‐development Runoff Inflow Primary Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=15.062 ac 30.40 cfs30.40 cfs 21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (acres) CN Description (subcatchment‐numbers) 0.161 98 Gravel surface, HSG C (Post Nrth A, Post Nrth A') 0.186 98 Gravel surface, HSG D (Post South 1, Post South 2) 0.032 98 Unconnected roofs, HSG D (Post South 3) 14.684 70 Woods, Good, HSG C (Post Nrth A, Post Nrth A', Post South 1, Post South 2) 15.062 71 TOTAL AREA Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Subcatchment Post Nrth A: Post Sub North A for North Driveway Runoff = 9.27 cfs @ 12.07 hrs, Volume= 0.604 af, Depth= 1.67" Runoff by SCS TR‐20 method, UH=SCS, Weighted‐CN, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Type II 24‐hr 25‐Year Rainfall=4.40" Area (sf) CN Description 185,086 70 Woods, Good, HSG C * 3,500 98 Gravel surface, HSG C 188,586 71 Weighted Average 185,086 98.14% Pervious Area 3,500 1.86% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.8 100 0.4000 0.13 Sheet Flow, Upper Reach Woods: Dense underbrush n= 0.800 P2= 2.50" 2.1 400 0.4000 3.16 Shallow Concentrated Flow, Shallow rivulets Woodland Kv= 5.0 fps 14.9 500 Total Subcatchment Post Nrth A: Post Sub North A for North Driveway Runoff Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 25-Year Rainfall=4.40" Runoff Area=188,586 sf Runoff Volume=0.604 af Runoff Depth=1.67" Flow Length=500' Slope=0.4000 '/' Tc=14.9 min CN=71 9.27 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Subcatchment Post Nrth A': Post Sub North A' for North Driveway Runoff = 12.17 cfs @ 12.08 hrs, Volume= 0.797 af, Depth= 1.60" Runoff by SCS TR‐20 method, UH=SCS, Weighted‐CN, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Type II 24‐hr 25‐Year Rainfall=4.40" Area (sf) CN Description 256,453 70 Woods, Good, HSG C * 3,500 98 Gravel surface, HSG C 259,953 70 Weighted Average 256,453 98.65% Pervious Area 3,500 1.35% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.8 100 0.4000 0.13 Sheet Flow, Upper Reach Woods: Dense underbrush n= 0.800 P2= 2.50" 2.1 400 0.4000 3.16 Shallow Concentrated Flow, Shallow rivulets Woodland Kv= 5.0 fps 14.9 500 Total Subcatchment Post Nrth A': Post Sub North A' for North Driveway Runoff Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)13 12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 25-Year Rainfall=4.40" Runoff Area=259,953 sf Runoff Volume=0.797 af Runoff Depth=1.60" Flow Length=500' Slope=0.4000 '/' Tc=14.9 min CN=70 12.17 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Subcatchment Post South 1: Post Sub South 1 for Middle Driveway Runoff = 4.89 cfs @ 12.09 hrs, Volume= 0.327 af, Depth= 1.67" Runoff by SCS TR‐20 method, UH=SCS, Weighted‐CN, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Type II 24‐hr 25‐Year Rainfall=4.40" Area (sf) CN Description 98,128 70 Woods, Good, HSG C * 4,000 98 Gravel surface, HSG D 102,128 71 Weighted Average 98,128 96.08% Pervious Area 4,000 3.92% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.3 100 0.3000 0.12 Sheet Flow, Upper Reaches Woods: Dense underbrush n= 0.800 P2= 2.50" 1.4 230 0.3000 2.74 Shallow Concentrated Flow, Shallow rivulets Woodland Kv= 5.0 fps 15.7 330 Total Subcatchment Post South 1: Post Sub South 1 for Middle Driveway Runoff Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)5 4 3 2 1 0 Type II 24-hr 25-Year Rainfall=4.40" Runoff Area=102,128 sf Runoff Volume=0.327 af Runoff Depth=1.67" Flow Length=330' Slope=0.3000 '/' Tc=15.7 min CN=71 4.89 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Subcatchment Post South 2: Post Sub South 2 for South Driveway Runoff = 4.98 cfs @ 12.09 hrs, Volume= 0.333 af, Depth= 1.67" Runoff by SCS TR‐20 method, UH=SCS, Weighted‐CN, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Type II 24‐hr 25‐Year Rainfall=4.40" Area (sf) CN Description 99,947 70 Woods, Good, HSG C * 4,100 98 Gravel surface, HSG D 0 98 Unconnected roofs, HSG D 104,047 71 Weighted Average 99,947 96.06% Pervious Area 4,100 3.94% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.3 100 0.3000 0.12 Sheet Flow, Upper Reaches Woods: Dense underbrush n= 0.800 P2= 2.50" 1.4 230 0.3000 2.74 Shallow Concentrated Flow, Shallow rivulets Woodland Kv= 5.0 fps 15.7 330 Total Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Subcatchment Post South 2: Post Sub South 2 for South Driveway Runoff Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)5 4 3 2 1 0 Type II 24-hr 25-Year Rainfall=4.40" Runoff Area=104,047 sf Runoff Volume=0.333 af Runoff Depth=1.67" Flow Length=330' Slope=0.3000 '/' Tc=15.7 min CN=71 4.98 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Subcatchment Post South 3: Post Sub South 3 for House Runoff = 0.24 cfs @ 11.90 hrs, Volume= 0.011 af, Depth= 4.16" Runoff by SCS TR‐20 method, UH=SCS, Weighted‐CN, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Type II 24‐hr 25‐Year Rainfall=4.40" Area (sf) CN Description 1,400 98 Unconnected roofs, HSG D 1,400 100.00% Impervious Area 1,400 100.00% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.1 20 1.0000 4.21 Sheet Flow, Upper Reaches Smooth surfaces n= 0.011 P2= 2.50" Subcatchment Post South 3: Post Sub South 3 for House Runoff Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Type II 24-hr 25-Year Rainfall=4.40" Runoff Area=1,400 sf Runoff Volume=0.011 af Runoff Depth=4.16" Flow Length=20' Slope=1.0000 '/' Tc=0.1 min CN=98 0.24 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Pond A: Rain Garden A Inflow Area = 4.329 ac, 1.86% Impervious, Inflow Depth = 1.67" for 25‐Year event Inflow = 9.27 cfs @ 12.07 hrs, Volume= 0.604 af Outflow = 9.27 cfs @ 12.08 hrs, Volume= 0.604 af, Atten= 0%, Lag= 0.2 min Discarded = 0.07 cfs @ 12.08 hrs, Volume= 0.062 af Primary = 9.20 cfs @ 12.08 hrs, Volume= 0.542 af Routing by Stor‐Ind method, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Peak Elev= 509.93' @ 12.08 hrs Surf.Area= 290 sf Storage= 205 cf Plug‐Flow detention time= 3.2 min calculated for 0.604 af (100% of inflow) Center‐of‐Mass det. time= 3.2 min ( 860.2 ‐ 857.0 ) Volume Invert Avail.Storage Storage Description #1 509.00' 225 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq‐ft) (cubic‐feet) (cubic‐feet) 509.00 151 0 0 509.50 223 94 94 510.00 301 131 225 Device Routing Invert Outlet Devices #1 Primary 509.50'12.0' long x 1.2' breadth Broad‐Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.66 2.69 2.71 2.78 2.89 2.99 3.09 3.20 3.21 3.19 3.30 3.32 #2 Discarded 509.00'10.000 in/hr Exfiltration over Surface area Phase‐In= 0.01' Discarded OutFlow Max=0.07 cfs @ 12.08 hrs HW=509.93' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.07 cfs) Primary OutFlow Max=9.19 cfs @ 12.08 hrs HW=509.93' (Free Discharge) 1=Broad‐Crested Rectangular Weir (Weir Controls 9.19 cfs @ 1.77 fps) Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Pond A: Rain Garden A Inflow Outflow Discarded Primary Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)10 9 8 7 6 5 4 3 2 1 0 Inflow Area=4.329 ac Peak Elev=509.93' Storage=205 cf 9.27 cfs9.27 cfs 0.07 cfs 9.20 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Pond A': Rain Garden A' Inflow Area = 10.297 ac, 1.56% Impervious, Inflow Depth = 1.56" for 25‐Year event Inflow = 21.36 cfs @ 12.08 hrs, Volume= 1.339 af Outflow = 21.35 cfs @ 12.08 hrs, Volume= 1.339 af, Atten= 0%, Lag= 0.3 min Discarded = 0.27 cfs @ 12.08 hrs, Volume= 0.261 af Primary = 21.09 cfs @ 12.08 hrs, Volume= 1.078 af Routing by Stor‐Ind method, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Peak Elev= 505.96' @ 12.08 hrs Surf.Area= 1,152 sf Storage= 1,692 cf Plug‐Flow detention time= 17.8 min calculated for 1.339 af (100% of inflow) Center‐of‐Mass det. time= 17.9 min ( 868.4 ‐ 850.5 ) Volume Invert Avail.Storage Storage Description #1 503.00' 1,738 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq‐ft) (cubic‐feet) (cubic‐feet) 503.00 204 0 0 504.00 336 270 270 505.80 1,048 1,246 1,516 506.00 1,178 223 1,738 Device Routing Invert Outlet Devices #1 Primary 505.50'25.0' long x 1.2' breadth Broad‐Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.66 2.69 2.71 2.78 2.89 2.99 3.09 3.20 3.21 3.19 3.30 3.32 #2 Discarded 503.00'10.000 in/hr Exfiltration over Surface area Phase‐In= 0.01' Discarded OutFlow Max=0.27 cfs @ 12.08 hrs HW=505.96' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.27 cfs) Primary OutFlow Max=21.06 cfs @ 12.08 hrs HW=505.96' (Free Discharge) 1=Broad‐Crested Rectangular Weir (Weir Controls 21.06 cfs @ 1.83 fps) Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Pond A': Rain Garden A' Inflow Outflow Discarded Primary Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=10.297 ac Peak Elev=505.96' Storage=1,692 cf 21.36 cfs21.35 cfs 0.27 cfs 21.09 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Pond B: Rain Garden B Inflow Area = 2.345 ac, 3.92% Impervious, Inflow Depth = 1.67" for 25‐Year event Inflow = 4.89 cfs @ 12.09 hrs, Volume= 0.327 af Outflow = 4.85 cfs @ 12.10 hrs, Volume= 0.327 af, Atten= 1%, Lag= 0.7 min Discarded = 0.36 cfs @ 12.10 hrs, Volume= 0.190 af Primary = 4.50 cfs @ 12.10 hrs, Volume= 0.137 af Routing by Stor‐Ind method, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Peak Elev= 538.99' @ 12.10 hrs Surf.Area= 1,544 sf Storage= 689 cf Plug‐Flow detention time= 5.6 min calculated for 0.327 af (100% of inflow) Center‐of‐Mass det. time= 5.6 min ( 863.3 ‐ 857.7 ) Volume Invert Avail.Storage Storage Description #1 538.50' 697 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq‐ft) (cubic‐feet) (cubic‐feet) 538.50 1,245 0 0 538.80 1,424 400 400 539.00 1,547 297 697 Device Routing Invert Outlet Devices #1 Primary 538.80'20.0' long x 1.5' breadth Broad‐Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.62 2.64 2.64 2.68 2.75 2.86 2.92 3.07 3.07 3.03 3.28 3.32 #2 Discarded 538.50'10.000 in/hr Exfiltration over Surface area Phase‐In= 0.01' Discarded OutFlow Max=0.36 cfs @ 12.10 hrs HW=538.99' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.36 cfs) Primary OutFlow Max=4.49 cfs @ 12.10 hrs HW=538.99' (Free Discharge) 1=Broad‐Crested Rectangular Weir (Weir Controls 4.49 cfs @ 1.16 fps) Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Pond B: Rain Garden B Inflow Outflow Discarded Primary Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)5 4 3 2 1 0 Inflow Area=2.345 ac Peak Elev=538.99' Storage=689 cf 4.89 cfs4.85 cfs 0.36 cfs 4.50 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Pond C: Rain Garden C Inflow Area = 2.389 ac, 3.94% Impervious, Inflow Depth = 1.67" for 25‐Year event Inflow = 4.98 cfs @ 12.09 hrs, Volume= 0.333 af Outflow = 4.98 cfs @ 12.09 hrs, Volume= 0.333 af, Atten= 0%, Lag= 0.1 min Discarded = 0.11 cfs @ 12.09 hrs, Volume= 0.110 af Primary = 4.87 cfs @ 12.09 hrs, Volume= 0.223 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Stor‐Ind method, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Peak Elev= 534.62' @ 12.09 hrs Surf.Area= 455 sf Storage= 242 cf Plug‐Flow detention time= 9.6 min calculated for 0.333 af (100% of inflow) Center‐of‐Mass det. time= 9.6 min ( 867.3 ‐ 857.7 ) Volume Invert Avail.Storage Storage Description #1 534.00' 431 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq‐ft) (cubic‐feet) (cubic‐feet) 534.00 329 0 0 534.80 492 328 328 535.00 536 103 431 Device Routing Invert Outlet Devices #1 Primary 534.50'48.0' long x 2.0' breadth Broad‐Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2 Secondary 534.80'8.0' long x 1.0' breadth Broad‐Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 #3 Discarded 534.00'10.000 in/hr Exfiltration over Surface area Phase‐In= 0.01' Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.11 cfs @ 12.09 hrs HW=534.62' (Free Discharge) 3=Exfiltration (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=4.86 cfs @ 12.09 hrs HW=534.62' (Free Discharge) 1=Broad‐Crested Rectangular Weir (Weir Controls 4.86 cfs @ 0.87 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=534.00' (Free Discharge) 2=Broad‐Crested Rectangular Weir ( Controls 0.00 cfs) Pond C: Rain Garden C Inflow Outflow Discarded Primary Secondary Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)5 4 3 2 1 0 Inflow Area=2.389 ac Peak Elev=534.62' Storage=242 cf 4.98 cfs4.98 cfs 0.11 cfs 4.87 cfs 0.00 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Pond D: Rain Garden D for House Inflow Area = 0.032 ac,100.00% Impervious, Inflow Depth = 4.16" for 25‐Year event Inflow = 0.24 cfs @ 11.90 hrs, Volume= 0.011 af Outflow = 0.07 cfs @ 11.98 hrs, Volume= 0.011 af, Atten= 71%, Lag= 5.0 min Discarded = 0.07 cfs @ 11.98 hrs, Volume= 0.011 af Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Stor‐Ind method, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Peak Elev= 534.48' @ 11.98 hrs Surf.Area= 304 sf Storage= 110 cf Plug‐Flow detention time= 7.8 min calculated for 0.011 af (100% of inflow) Center‐of‐Mass det. time= 7.8 min ( 748.5 ‐ 740.7 ) Volume Invert Avail.Storage Storage Description #1 534.00' 310 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq‐ft) (cubic‐feet) (cubic‐feet) 534.00 155 0 0 534.80 404 224 224 535.00 463 87 310 Device Routing Invert Outlet Devices #1 Primary 534.80'8.0' long x 1.0' breadth Broad‐Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31 3.30 3.31 3.32 #2 Discarded 534.00'10.000 in/hr Exfiltration over Surface area Phase‐In= 0.01' Discarded OutFlow Max=0.07 cfs @ 11.98 hrs HW=534.48' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.07 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=534.00' (Free Discharge) 1=Broad‐Crested Rectangular Weir ( Controls 0.00 cfs) Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Pond D: Rain Garden D for House Inflow Outflow Discarded Primary Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=0.032 ac Peak Elev=534.48' Storage=110 cf 0.24 cfs 0.07 cfs0.07 cfs 0.00 cfs Type II 24‐hr 25‐Year Rainfall=4.40"21008 220607 HydroCad Printed 6/15/2022Prepared by JARRETT Engineers, PLLC HydroCAD® 10.00‐25 s/n 01268 © 2019 HydroCAD Software Solutions LLC Summary for Link Post: Total Post Develpment Runoff Inflow Area = 15.062 ac, 2.51% Impervious, Inflow Depth = 1.15" for 25‐Year event Inflow = 30.40 cfs @ 12.09 hrs, Volume= 1.437 af Primary = 30.40 cfs @ 12.09 hrs, Volume= 1.437 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00‐48.00 hrs, dt= 0.01 hrs Link Post: Total Post Develpment Runoff Inflow Primary Hydrograph Time (hours) 484644424038363432302826242220181614121086420Flow (cfs)34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Inflow Area=15.062 ac 30.40 cfs30.40 cfs Subcatchment "North A"261,086 sf; avg slope 40%+Subcatchment "South B"113,700 sf; avg slope 30%+Subcatchment "South A"93,000 sf; avg slope 30%+Subcatchment "North B"188586 sf; avg slope 40%+James Brown ParcelsNew Driveway RouteTributary WatershedBrown Site Design(Base Mapping from NYSDEC Environmental Mapper)JARRETTEngineers, PLLC6/14/2022