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Section 5.0 - Stormwater Pollution Prevention Plan
Gracie Road Athletic Complex Stormwater Pollution Prevention Plan Tawas of Car/Lmrlvillg New Yor/r Preynrerl jor: To1vn of Cort(nndidlle Raymond G. Timpe Municipal Building 3577 Tel Road Cortland, New Ark 13045 Preyarerl Gr: CC b IL The Galleries of Sj n•ncuse 441 South S'rr(inn Sheet S�nrrcase, Neer fork 13202 (315) 471-3920 CHA Project Nrnxber: 31591 September, 2016 Stormwater Pollution Prevention Plan TABLE OF CONTENTS PROJECT INFORMATION: 4 PROJECT NAME AND LOCATION 4 OWNER NAME AND ADDRESS 4 PROJECT DESCRIPTION: 4 PURPOSE AND EXTENT OF PROPOSED DEVELOPMENT 4 PROJECT DISTURBANCE AREA 4 DESCRIPTION AND LI\RTATIONS OF ON-SITE SOILS 4 HISTORIC PLACES 5 SEOUENCE OF MAJOR ACTIVITIES: 6 NAME OF RECEIVING WATERS 6 CONTROLS: 7 TLmHNG OF CONTROLS/MEASURES 7 EROSION AND SEDIMENT CONTROLS / STABILIZATION PRACTICE 7 TEMPORARY STABILIZATION 7 PERMANENT STABILIZATION 8 WINTER OPERATIONS 8 WINTER SHUTDOWN 8 OTHER CONTROLS 8 WASTE DISPOSAL 8 SEDIMENT TRACKING BY VEHICLES 9 NON-STORMWATER DISCHARGES 9 CERTIFICATION OF COMPLIANCE WITH FEDERAL STATE) AND LOCAL REGULATIONS 9 POST -CONSTRUCTION STORMWATER MANAGEMENT 9 DESIGN CRITERIA 9 EXISTING CONDITIONS 10 PROPOSED CONDITIONS 10 WATER QUALITY 12 RUNOFF REDUCTION 13 CHANNEL PROTECTION VOLUME 13 PEAK FLOW ATTENUATION 13 FLOODPLAINS 14 MAINTENANCEANSPECTION PROCEDURES: 14 EROSION AND SEDIMENT CONTROL INSPECTION AND MAINTENANCE PRACTICES 14 OWNER/OPERATOR INSPECTION REQUIREMENTS 14 QUALIFIED INSPECTOR INSPECTION REQUIREMENTS 14 GENERAL REQUIREMENTS 15 POST -CONSTRUCTION STORMWATER INSPECTION AND MAINTENANCE PRACTICES 15 INVENTORY FOR POLLUTION PREVENTION PLAN: 16 SPILL PREVENTION: 16 GOOD HOUSEKEEPING 16 HAZARDOUS PRODUCTS 16 PRODUCT SPECIFIC PRACTICES 17 C yv� C.,e FAMIT,47m wers Stormwater Pollution Prevention Plan TABLE OF CONTENTS PROJECT INFORMATION: 4 PROJECT NAME AND LOCATION 4 OWNER NAME AND ADDRESS 4 PROJECT DESCRIPTION: 4 PURPOSE AND EXTENT OF PROPOSED DEVELOPMENT 4 PROJECT DISTURBANCE AREA 4 DESCRIPTION AND LI\RTATIONS OF ON-SITE SOILS 4 HISTORIC PLACES 5 SEOUENCE OF MAJOR ACTIVITIES: 6 NAME OF RECEIVING WATERS 6 CONTROLS: 7 TLmHNG OF CONTROLS/MEASURES 7 EROSION AND SEDIMENT CONTROLS / STABILIZATION PRACTICE 7 TEMPORARY STABILIZATION 7 PERMANENT STABILIZATION 8 WINTER OPERATIONS 8 WINTER SHUTDOWN 8 OTHER CONTROLS 8 WASTE DISPOSAL 8 SEDIMENT TRACKING BY VEHICLES 9 NON-STORMWATER DISCHARGES 9 CERTIFICATION OF COMPLIANCE WITH FEDERAL STATE) AND LOCAL REGULATIONS 9 POST -CONSTRUCTION STORMWATER MANAGEMENT 9 DESIGN CRITERIA 9 EXISTING CONDITIONS 10 PROPOSED CONDITIONS 10 WATER QUALITY 12 RUNOFF REDUCTION 13 CHANNEL PROTECTION VOLUME 13 PEAK FLOW ATTENUATION 13 FLOODPLAINS 14 MAINTENANCEANSPECTION PROCEDURES: 14 EROSION AND SEDIMENT CONTROL INSPECTION AND MAINTENANCE PRACTICES 14 OWNER/OPERATOR INSPECTION REQUIREMENTS 14 QUALIFIED INSPECTOR INSPECTION REQUIREMENTS 14 GENERAL REQUIREMENTS 15 POST -CONSTRUCTION STORMWATER INSPECTION AND MAINTENANCE PRACTICES 15 INVENTORY FOR POLLUTION PREVENTION PLAN: 16 SPILL PREVENTION: 16 GOOD HOUSEKEEPING 16 HAZARDOUS PRODUCTS 16 PRODUCT SPECIFIC PRACTICES 17 C yv� StormwaterPollution Prevention Plan PETROLEUM PRODUCTS 17 FERTILIZERS 17 PAINTS 17 CONCRETE TRUCKS 17 WATERCOURSE PROTECTION 17 SPILL CONTROL PRACTICES 17 UPDATING THE SWPPP: 18 SWPPP CERTIFICATION: 18 CONTRACTOR'S CERTIFICATION 19 APPENDICES: A SOILS INFOR\lA1'ION B HISTORIC PRESERVATION INFORMATION C HYDROLOGIC ANALYSES FIGURES FIGURE 1: LOCATION PLAN FIGURE 2: SOILS MAP FIGURE 3: EXISTING CONDITIONS FIGURE 4: PROPOSED CONDITIONS FIGURE 5A: GI PRACTICES FIGURE 5131: BIORETENTION AREA DETAIL FIGURE 6A: CHAMBER PIPE LAYOUT FIGURE 6B: MC -3500 STANDARD CROSS SECTION TYPICAL DETAIL CURVE NUMBER & TIME OF CONCENTRATION CALCULATIONS RAINFALL INFORMATION HYDROGRAPH SUMMARY REPORTS WQV/RRV SUMMARY BIORETENTION SIZING CALCULATIONS STORMTECH CHAMBER INFORMATION D NOTICE OF INTENT E SPDES GENERAL PERMIT GP -0-15-002 F INSPECTION FORMS AND MAINTENANCE INFORMATION G EROSION AND SEDIMENT CONTROL PLAN AND DETAILS Project Information: Project Name and Location Gracie Road Athletic Complex NYS Route 13 & Gracie Road Town of Cortlandville Cortland County, New York Owner Name and Address Richard Tupper Town of Cortlandville Raymond G. Thorpe Municipal Building 3577 Terrace Road Cortlandville, New York 13045 (607)756-6091 Supervisor l @cortlandvil le.org Project Description: Purpose and Extent of Proposed Development The proposed project is located in the Town of Cortlandville, Cortland County, New York at the northeast corner of NYS Route 13 and Gracie Road (see Figure 1 — Location Plan). The property encompasses approximately 111.92 acres and is generally bounded by agricultural and residential lands to the north, south and west and industrial/rnanufacturing properties to the east. This SWPPP cover's all site development, scheduled to be completed in multiple phases beginning in 2017. More specifically, ovl] site development includes the construction of baseball and multi -use fields, volleyball courts, walking trails, a playground, parking areas and the associated infrastructure (water, electric, gas and wastewater). Since site development will disturb more than I acre of land, compliance with the New York State SPDES program is required. Therefore, stormwater management and treatment facilities will be constructed accordingly. Project Disturbance Area Total Disturbed Area: ±75.20 acres Proposed Total Impervious Area: ±14.93 acres Description and Limitations of On -Site Soils The soil disturbance for the proposed work is limited to 75.20± acres within the property boundary. According to the USDA Soil Survey of Cortland County, New York, the area of disturbance consists of Howard gravelly loam (HdA, HdB, HdC, and HdD) (see Figure 2—NRCS Soils Map). Detailed information for these soil types is located in Appendix A. A summary of the soil composition is shown in Table 1. The Natural Resource Conservation Service (NRCS, formerly known as the SCS), as part of their soil classification system, assigns each soil series to a Hydrologic Soil Group (HSG). The HSG is a four-letter index intended to indicate the minimum rate of infiltration obtained after prolonged wetting, and to indicate the relative -4. potential for a soil type to generate runoff. The infiltration rate is the rate at which water enters the soil at the soil surface. The HSG also indicates the transmission tate — the rate at which water moves within the soil. Soil scientists define the four groups as follows: • HSG `A' (sand, loamy sand, or sandy loam): Soils have low runoff potential and high infiltration rates even when thoroughly wetted. They consist chiefly of deep, well to excessively drained sands or gravels and have a high rate of water transmission (> than 0.30 inches/hour). • HSG `B' (silt loam or loam): Soils have moderate infiltration rates when thoroughly wetted, and consist chiefly of moderately deep to deep, moderately well to well drained soils with moderately fine to fine texture. These soils have a moderate rate of water transmission (0.15 to 0.30 inches/hour). • HSG `C' (sandy clay loam): Soils have low infiltration rates when thoroughly wetted and consist chiefly of soils with a layer that impedes downward movement of water, and soils with moderately fine to fine texture. These soils have a low rate of water transmission (0.05 to 0.15 inches/hour). • HSG `D' (clay loam, silty clay loam, sandy clay, silty clay, or clay): Soils have high runoff potential. They have very low infiltration rates when thoroughly wetted, and consist chiefly of clay soils with a high swelling potential, soils with a permanent high water table, soils with a clay pan or clay layer at or near the surface, and shallow soils over nearly impervious material. These soils have a very low rate of water transmission (< 0.05 inches/hour). • [f a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in Group D are assigned to dual classes. Table 1 Soil Analysis Summary Soil Name Hydrologic Soil Group HdA —Howard, 0 to 30/ A HdB —Howard, 3 to 8% A HdC —Howard, 8 to 15% A HdD —Howard, 15 to 25% A Note: /r f lhalioll rates are assumed to be 5.0 in/!n• fol• design parposes. Achral rates will need to be field verified prior• to Consh'uctlon OfSlol'»lwater n7aringelnelit/lTeahnenl pl`actices. Historic Places The proposed project will have no impacts, whether stormwater discharge or construction activities, on a property that is listed or eligible for listing on the State or National Register of Historic Places in Cortland County, New York. This determination was confirmed based on results from Phase IA and IB Cultural Resource Investigations performed by Powers Archeology, LLC, f/k/a Powers & Teremy, LLC dated May 18, 2016 (see Appendix B for report excerpt). -5- Sequence of Major Activities: This SWPPP presents erosion and sediment controls, both temporary and permanent, to assist the operator in compliance with the project's SPDES General Permit for construction activity. To the degree practicable, all temporary erosion and sediment control mitigation measures shall be installed immediately before associated project areas are disturbed in anticipation of all soil disturbing activities to follow. Based upon NYS DEC regulations, 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 landuse control MS4, the MS4 (provided the MS4 is not the owner or operator of the construction activity). At a minimum, the owner or operator must comply with the following requirements in order to be authorized to disturb greater than five (5) acres of soil at any one time: L The owner or operator shall have a qualified inspector conduct at least two (2) site inspections in accordance with Pail I V.B. every seven (7) calendar days, for as long as greater than five (5) acres of soil remain disturbed. When performing just two (2) inspections every seven (7) calendar days, the inspections shall be separated by a minimum of two (2) full calendar days. 2. In areas where soil disturbance activity has been temporarily or permanently ceased, temporary and/or permanent soil stabilization measures shall be installed and/or implemented within seven (7) days from the date the soil disturbance activity ceased. The soil stabilization measures selected shall be in conformance with the most current version of the technical standard, New York Standards and Specifications for Erosion and Sediment Control, 3. The owner or operator shall install any additional site specific practices needed to protect water quality. 4. The owner or operator shall include the requirements above in their SWPPP. It is the responsibility of the Contractor to ensure that all soils removed from the project site are spoiled in a manner consistent with all local, state, and federal regulations. Appropriate erosion and sediment controls shall be installed at all spoil sites. Additionally, the Contractor is responsible for coordinating the application for a GP - 0 -15-002 permit (and development of an associated SWPPP) if disturbance associated with any soil spoils area is greater than 0.4 hectares (I acre). GP -0-15-002 applications must be signed by the owner of the lands on which soils are spoiled. Disturbances associated with offsite spoil areas do not contribute to the total disturbances associated with onsite activities. It is not anticipated that 5 acres will be disturbed at one time for the first phase of this project. The potential exists that a 5 acre waiver may be required for future phases. Should this occur, additional controls and phasing plans will be prepared at that time. See the Phase 1 Construction Documents for specific construction sequencing information. Specific sequencing information for the remaining phases will be prepared at a later date. Name of Receiving Waters Any stormwater runoff draining offsite appears to drain to the north/northwest to a wetland area west of Gracie Road which is tributary to Beaver Creek (Class C(T)). -6- CWi Controls: Timing of ContrOlS/lVfeasures The erosion and sediment control measures shall be constructed prior to clearing or grading of any portion of the project. Where land disturbance is necessary, temporary seeding or mulching must be used on areas which will be exposed for more than 14 days. Permanent stabilization should be performed as soon as possible after completion of grading. After the entire project area is stabilized, the accumulated sediment shall be removed from the project area. Erosion control devices shall remain in place until disturbed areas are permanently stabilized. For projects where soil disturbance is greater than five (5) acres, and construction activity has temporarily or permanently ceased, temporary and/or permanent soil stabilization measures shall be installed and/or implemented within seven (7) days from the date the soil disturbance activity ceased. The soil stabilization measures selected shall be in conformance with the most current version of the technical standard, New York Standards and Specifications for Erosion and Sediment Control. Erosion and Sediment Controls / Stabilization Practice Temporary Stabilization: Topsoil stockpiles, staging areas and disturbed pervious portions of the project area where construction activity temporarily ceases for at least 7 days shall be stabilized with temporary seed and mulch no later than 14 days from the last construction activity in that area. Temporary seed shall be ryegrass applied at the rates specified below: — If seeding in spring, summer or early fall then seed with annual or perennial rye at a rate of 30 lbs per acre. If area is to remain stabilized over the winter into the following spring use perennial rye only. If seeding in late fall or early winter, use certified Aroostook winter rye (cereal rye) at a rate of 90 lbs per acre. Any seeding method may be used that will provide uniform application of seed to the area and result in relatively good soil to seed contact. Area must be free of large rocks and debris and seeded within 24 hours of disturbance or scarification of the soil surface will be necessary prior to seeding. Fertilizer or time is not typically used for temporary plantings. Mulch shall be applied in conjunction with seeding and applied at the rate of 90 lbs per 1000 square feet. Mulch shall be reapplied as necessary. Areas of the project area, which are to be paved, shall be temporarily stabilized by applying temporary gravel subbase until pavement can be applied. Proposed grades which will have slopes steeper than 3:1 shall be stabilized with erosion control fabric. Temporary diversion swales shall be installed on site as necessary to provide positive drainage. The diversion swales are designed to divert runoff around active construction areas to a point of discharge. Rip -rap outlet protection shall be installed at all stormwater outlets, including that from any temporary sediment basins. Rip -rap material shall be hard, durable field or quarry stone which is angular and resists breaking down when exposed to water or weathering. Sediment control fencing shall be installed around the site where depicted on the attached plan sheets -7- Prior to commencing any earthwork, stabilized construction entrances shall be installed as indicated on the attached plans. These entrances shall be utilized as the exclusive construction entrance and exit to the construction areas. Construction traffic shall be limited to the construction entrances. Permanent Stabilization --------------------------------------------------------------------------------------- Disturbed portions of the project area where construction activities permanently cease shall be stabilized with permanent seed no later than 14 days after the last construction activity. The permanent seed mix shall be in accordance with the project specifications and plans. Construction and maintenance of erosion and siltation control measures are in accordance with the New York Standards and Specifications for Erosion and Sediment Control. Where construction activity is complete over areas to be permanently vegetated, stabilize with permanent seeding. Verify seeding dates with engineer. If engineer determines that seed cannot be applied due to climate, topsoil shall not be spread and mulching shall be applied to the exposed surface to stabilize soils until the next recommended seeding period. Other project areas shall be permanently stabilized with pavement, concrete, gravel or building structures. Winter Operations If construction activities proceed through the winter season, access points should be enlarged and stabilized to provide for snow stockpiling. Drainage structures should be kept open and free of potential snow and ice dams. Inspection and maintenance are necessary to ensure the function of these practices during runoff events. For sites where construction activities temporarily cease, temporary and/or permanent soil stabilization measures shall be installed within seven (7) days from the date the soil disturbing activity ceased. Disturbed areas should be stabilized with seed and mulch, or other approved methods, even if the ground is covered by significant amounts of snow. A'inter Shtrtrlawn ------------------------------------------------------------------------------------------ Site inspections (by the qualified inspector) may be decreased to a minimum of one (I) time every thirty (30) days for sites where soil disturbing activities have ceased and the site has been completely stabilized with an approved method. Inlet protection should be installed and/or repaired before shutdown of the site. The owner or operator shall provide written notification to the NYSDEC Regional Stonnwater Contact prior to reducing the frequency of any site inspections. Other Controls Waste D/spasal Waste materials —Foreign waste materials shall be collected and stored in a secured area until removal and disposal by a licensed solid waste management company. All trash and construction debris from the project area shall be disposed of in a portable container unit. No foreign waste materials shall be buried within the project area. All personnel shall be instructed regarding the correct procedure for waste disposal. Notices stating these practices shall be posted in the project trailer and the individual who manages day-to-day project operations will be responsible for seeing that these procedures are followed. Petroleum Impacted Waste —During the excavation activities, there is the potential that petr oleum impacted soils tnay be encountered. In the event that field evidence of contamination is identified during the project, potentially contaminated soils will be segregated and stockpiled on polyethylene sheeting and covered in a predetermined staging area. The potentially impacted, stockpiled soils will then be sampled to determine if the soils are suitable for use as clean backfill. In the event that the soils are not suitable for re -use, the contaminated - C- Y%I soil will be properly characterized and disposed of at an off-site NYSDEC permitted facility. The excavation will then be backfilled with clean, imported fill. Hazardous Waste - All hazardous waste materials shall be disposed of in a manner specified by local or state regulations or by the manufacturer. Project personnel shall be instructed in these practices and the individual who manages day-to-day project operations shall be responsible for seeing that these practices are followed. Sanitary Waste - Any sanitary waste from portable unitss a e collected firm the portable units by a licensed sanitary waste management contractor, as required by NYS DEC regulations. ------ent Trucking -------------- o o help reduce vehicular tracking of sediment. The entrance shall be cleaned of sediment and redressed when voids in the crushed stone become filled and vehicular tracking of sediment is occurring. Dump trucks handing materials to and from the construction project area shall be covered with a tarpaulin to reduce dust. Any sediment and debris tracked from work area along project adjacent roadways shall be immediately removed with a street sweeper or equivalent sweeping method. Further, sweeping of streets adjacent to disturbed areas shall be performed prior to the end of each work day (at a minimum) when tracking of sediment is occurring. Norr-Starmrvnter Disc/rnrges----------------------------------------------------------------------------- Non-stonmvater discharges are not expected to exit the project area during construction. Certification of Compliance with Federal, State, and Local Regulations The stonmvater pollution prevention plan reflects the New York State requirements for stonmvater management and erosion and sediment control. To ensure compliance, this plan was prepared in accordance with New or State Standards. There are no other applicable State or Federal requirements for sediment and erosion plans (or permits), or stormwater management plans (or permits). Post -Construction Stormwater Management Design Criteria The proposed project has been designed in accordance with the New York State Stormwater• Management Design Manual (January 2015) and the State Pollutant Discharge Elimination System (SPDES) General Permit for Stormwater Discharges from Construction Activities (GP -0-15-002). CHA proposes to utilize the unified approach for sizing stonmvater management practices to meet removal goals, reduce channel erosion, prevent overbank flooding, and help control extreme floods. In order to evaluate the potential impacts associated with the development of the site, existing and proposed condition hydrographs were generated using a Type II rainfall distribution. Rainfall amounts were referenced from the Northeast Regional Climate Center. The 24-hour rainfall amounts for the 1, 10, and 100 -year design storms for the project site are 1.99, 3.38, and 5.73 inches respectively. Runoff curv e numbers and times of concentration were computed using standard NRCS TR -55 methodology. Additionally, peak stonmvater flows and hydrographs for the existing and proposed conditions were computed using the Hydraflow Hydrographs Extension for AutoCAD Civil 3D 2015 hydrology program by Autodesk, Inc. -9- Existing Conditions The existing project site was broken into five (5) drainage areas, all consisting mainly of agricultural fields (see Figure 3 -Existing Conditions). DA -1 is the largest drainage area, approximately 45.93 acres and generally drains to a low point along NYS Route 13. It appears from the topographic survey that a portion of the Essex Structural Steel property also drains to this low area and is therefore included. DA -2 is approximately 26.55 acres in size and generally drains to the northwest to the ditch along Gracie Road. DA -3 and DA -4 are approximately 16.08 acres and 8.80 acres respectively and generally drain to the northwest. These areas contain steep slopes and the only wooded area on the property. DA -5 is approximately 0.50 acres in size and generally drains to the northeast. For detailed hydrologic analyses output for the existing conditions, see Appendix C. For a summary of the existing conditions hydrologic analysis, see Table 2 below. Table 2 -Existing Conditions Analysis Summary Drainage Area Area (ac) I 45.93 2 26.55 T� Curve (min) Number 26.3 I 67 14.9 I 62 13.6 58 Proposed Conditions Peak Flow Rate (cfs) 1 -yr 10 -yr 0.00 I 0.00 1.81 17.24 0.25 8.73 0.03 2.78 0.05 0.54 2.Ob 27.51 yr 58,67 0.00 58.67 37.22 16.48 1.78 107.54 The proposed project site was broken into twelve (12) subareas corresponding to the original five (5) drainage areas in existing conditions (see Figure 4 -Proposed Conditions). DA -1 decreases in size to approximately 31.41 acres and will consist of the proposed baseball fields, sidewalks, sand volleyball courts and a portion of the administration/maintenance building. This area will continue to drain to the existing low area along NYS Route 13, DA -2 was broken into two (2) subareas (DA -2A and DA -213 ). These areas consist of the proposed soccer fields which will be completed in a future phase(s). DA -2A will drain to a proposed infiltration basin which will manage the point discharge runoff from the field drainage system. DA -28 will drain to the ditch along Gracie Road as in existing conditions. DA -3 was broken into seven (7) subareas (DA -3A thru DA -3G). These areas consist of a portion of the proposed soccer fields, the large parking lot, and a portion of the proposed access road and trail Runoff from DA -3B, 3C, 3D, and 3E will discharge first to bioretention areas, then to underground chamber pipes to be infiltrated. DA -317 -t0- -- Proposed Conditions Peak Flow Rate (cfs) 1 -yr 10 -yr 0.00 I 0.00 1.81 17.24 0.25 8.73 0.03 2.78 0.05 0.54 2.Ob 27.51 yr 58,67 0.00 58.67 37.22 16.48 1.78 107.54 The proposed project site was broken into twelve (12) subareas corresponding to the original five (5) drainage areas in existing conditions (see Figure 4 -Proposed Conditions). DA -1 decreases in size to approximately 31.41 acres and will consist of the proposed baseball fields, sidewalks, sand volleyball courts and a portion of the administration/maintenance building. This area will continue to drain to the existing low area along NYS Route 13, DA -2 was broken into two (2) subareas (DA -2A and DA -213 ). These areas consist of the proposed soccer fields which will be completed in a future phase(s). DA -2A will drain to a proposed infiltration basin which will manage the point discharge runoff from the field drainage system. DA -28 will drain to the ditch along Gracie Road as in existing conditions. DA -3 was broken into seven (7) subareas (DA -3A thru DA -3G). These areas consist of a portion of the proposed soccer fields, the large parking lot, and a portion of the proposed access road and trail Runoff from DA -3B, 3C, 3D, and 3E will discharge first to bioretention areas, then to underground chamber pipes to be infiltrated. DA -317 -t0- .� 7011 will discharge to a proposed infiltration basin which will manage the point discharge from the remaining parking area and a portion of the access road. DA -3G will contain a portion of the proposed trail but will remain mostly undeveloped. DA -4 is approximately 11. 15 acres in size and consists of the small parking lot, sidewalk, the remaining portion of the trail, and a portion of the access drive. The parking lot will drain to bioretention areas in the center and adjacent to the access drive. DA -5 is approximately 0.70 acres in size and contains a small portion of the access drive and sidewalk. Drainage from this area will continue to flow northeast as in existing conditions. For detailed hydrologic analyses output for the proposed conditions see Appendix C. For a summary of the proposed conditions hydrologic analysis see Table 3 below. Table 3 -Proposed Cmrditions Analysis Summary -11- Peak Flow Rate (cfs) Drainage Area TC Curve Area (ac) (min) Number 1 -yr 10 -yr 100 -yr 1 31.41 21.9 49 0.00 0.84 23.02 2A 19.31 30.6 42 0.00 0.06 3.85 2B 10.39 30.4 44 0.00 0.06 2.99 Total 0.00 0.11 6.83 Area 2 3A 3.77 25.0 42 0.00 0.01 0.86 3B 2.65 5.0 83 3.10 7.84 16.72 3C 3.14 5.0 81 3.18 8.53 18.92 3D 2.00 5.0 85 2.68 6.41 13.16 3E 2.48 5.0 87 3.77 8.56 16.96 3F 4.36 19.0 66 0.27 3.17 11.06 3G 6.55 16.6 41 0.00 0.02 1.60 Total 12.78 32.88 72.66 Area 3 4 11.15 23.5 52 0.007 0.70 9.96 5 0.70 23.0 56 0.002 0.12 0.95 Total 12.78 32.99 87.43 -11- C ykb {rater Qualify ------------------------------------------------------------------------------------------- Water quality treatment will be designed to capture and treat 90% of the annual stormwater runoff volume, or the full water quality volume (WQ,.). Treatment practices need to be capable of 80% Total Suspended Solids (TSS) removal and 40% Total Phosphorous (TP) removal, have an accepted longevity in the field and have a pretreatment mechanism. Per the New York State Stormwater Management Design Manual (NYSSMDM), the Water Quality Volume (WQv) is calculated as follows: WQv = (P * Rv * A)/12, where P = 90% rainfall event number, from NYSSMDM Figure 4. 1, P=1.0 Rv = Impervious coefficient, based on % impervious cover (I) Rv = 0.05 + 0.009*(1) A = Drainage area in acres Table 4 Water Quality Volume Summary Drainage WQv Required I WQv Provided Area (acft) (acft) Practice 1 0.143 I 2.544 Infiltration Basin 2A 0.067 0.256 Infiltration Basin 2B 0.000 N/A N/A 3A 0.000 N/A I N/A 3B 0.156 I 0.160 I Bioretention 3C 0.177 0.183 I Bioretention 3D 0.123 0.123 Bioretention 3E 0.159 I 0.161 I Bioretention 3F 0.159 0.201 I Infiltration Basin i 3G 0.000 N/A N/A 4 0.181 0.181 Bioretention 5 0.016 0.016 Grass Filter Strip Total 1.182 3.829* *Since the 117Qv calculation is determined by the tributary impervious surface to the practice, only the required volume is considered "Provided" on the Notice oftntent even though many ofthe treatment practices may hold additional treatment rohmne. _t2_ CI -AI RunoffReduction The goal of runoff reduction (RRv) is to provide infiltration, groundwater recharge, reuse, recycle evaporation/evapotranspiration of 100 percent of the post -development water quality volumes to replicate pre - development hydrology by maintaining pre -construction infiltration, peak runoff flow, discharge volume, as well as minimizing concentrated flow by using runoff control techniques to provide treatment in a distributed manner before runoff reaches the collection system. This requirement can be accomplished by application of on-site green infrastructure techniques, standard stormwater management practices with runoff reduction capacity, and good operation and maintenance. Runoff reduction can be achieved by three methods: reduction of contributing drainage area, reduction of runoff volume through practice storage, and using standard stormwater practices with runoff reduction capacity. As shown in Table 4 above, 100% of the WQv is provided using infiltration practices, therefore, the RRv is met. Ci:mutel Pratec/ion Volrrnre Channel Protection Volume (CPv) control requires storage and detention for a period of 24 hours, of the post - developed I -year, 24-hour storm event; remaining after runoff reduction. The proposed stormwater infiltration practices provide tire required CPv. The existing volume generated by the current site for the 1 year storm event amounts to 0.514 acft. The total volume generated by the proposed site amounts to 0.644 acft which is an increase of 0.130 acft. The infiltration and bioretention areas reduce the volume generated for the 1 year storm event down to 0.058 acft. Therefore, the infiltration and bioretention areas provide a total CPv of 0.456 acft (0.644 acft - 0.058 acft = 0.456 acft) which meets the CPv requirement (see Hydraflow Summary Report for the 1 Year Storm Event located in Appendix C). Peak Flow Attenuation Based on a comparison between the existing condition and the unmitigated proposed condition peak flow rates, the proposed development will increase peak rates of runoff at all design points. In accordance with the governing regulations, this increase in peak flows must be mitigated such that the proposed mitigated condition peak runoff rates will be no greater than the existing condition rates for the 10 -year and 100 -year 24-hour storm events. Hydrographs were developed for the post -mitigated conditions which included routing runoff through the stormwater management pond. A comparison of the results of the existing condition and mitigated proposed condition hydrologic analysis is shown in the following table and detailed computations are included in Appendix C. Table 4 -Existing Condition and Mitigated Post -Development Peak Flow Comparison Peak Flow Rate (efs) Drainage 1 -Year Storm 10 -Year Storm 100 -Year Storm Area Existing Post Existing Post Existing Post Mitigated g Mitigated Mitigated _ 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 1.81 0.00 -1.81 17.24 0.06 -17.18 58.67 2.99 -55.68 3 0.25 0.08 -0.17 8.73 0.40 -8.33 37.22 10.85 -26.37 4 0.03 0.007 -0.023 2.78 0.70 -2.08 16.48 9.96 -6.52 5 0.05 0.002 -0.048 0.54 0.12 -0.42 1.78 0.95 -0.83 Totals: 2.06 0.08 4.98 27.51 1997 -25.54 107.54 49.75 -57.79 -13- As shown in the above table, the proposed condition mitigated peak flow rates are below the existing peak flow rates as required. F1oorlPlrrtns The project site is not located within a floodplain, therefore, floodplain impacts are not applicable. Maintenance/Inspection Procedures: Erosion and Sediment Control Inspection and Maintenance Practices These are the minimum required inspection and maintenance practices that shall be used to maintain erosion and sediment controls: Owner/OPerntor Inspection Requirenrerlts Prior to construction activity the owner/operator shall have contractors and sub -contractors identify a trained individual responsible for the implementation of the SWPPP. The trained individual must be on-site on a daily basis when soil disturbing activities are occurring. The owner/operator shall inspect the erosion and sediment control measures as identified in the SWPPP to ensure that they are being maintained in effective operating conditions at all times. Where soil disturbing activities temporarily cease (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the owner/operator can stop conducting inspections. The owner/operator shall resume inspections when soil disturbing activities begin again. Where soil disturbing activities have ceased with partial project completion, the owner/operator can stop conducting inspections when disturbed areas have reached final stabilization. All post construction stormwater management practices required for the completed areas shall have been constructed in conformance with the SWPPP and be fully operational. 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. The owner/operator shall notify the stonmvater contact person for both the DEC Regional Office and the MS4 prior to any reduction in the frequency of site inspections. The owner/operator shall retain copies of the NOI, NOI acknowledgment letter, SWPPP, MS4 SWPPP acceptance forms and any inspection reports submitted in conjunction with this permit and records or all data used to complete the NOI to be covered by this permit for a period of at least five (5) years from the date that the site is finally stabilized. Qnnlifted Inspector Inspection Requirements The qualified inspector is de£rned as a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professiorral in Erosion and Sediment Control (CPESC), licensed Landscape Architect, or other Department endorsed individual(s). It may also mean someone working under the direct supervision of the licensed Professional Engineer or licensed 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 the person has received four (4) hours of training endorsed by the Department and shall receive four (4) hours of training every three (3) years after the initial training. A site inspection shall be conducted at least once every seven (7) days by the qualified inspector when soil disturbing activities are occurring. A copy of the "Construction Duration Inspection Form" is included in the -14- - CHC- "inspection forms" section of this plan. • All measures shall be maintained in good working order; if any repairs or corrective actions are necessary, it is the responsibility of the qualified inspector to notify the owner/operator and appropriate contractor within one business day. The contactor shall begin implementing the corrective action within one business day of being notified. • During construction activities where soil disturbances exceed the five (5) acre maximum, and the owner/operator has received prior authorization, the qualified inspector shall conduct at least two (2) site inspections every seven (7) calendar days. Inspections shall be separated by a minimum of two (2) full calendar days. • All inspection forms must be signed by a qualified inspector. • For construction sites where soil disturbing activities are temporarily suspended, temporary stabilization measures shall be applied and the qualified inspector shall conduct a site inspection at least once every thirty (30) calendar days. • Where soil disturbing activities have ceased with partial project completion the qualified inspector can stop conducting inspections when disturbed areas have reached final stabilization and all post construction stornnvater management practices required for the completed areas have been constructed in conformance with the SWPPP and are fully operational. Where soil disturbing activities are not resumed within two (2) years, from the date of shut down of partial project completion, the qualified inspector shall perform a final inspection and certify that all disturbed areas have achieved final stabilization, all temporary and permanent erosion control measures have been removed, and post - construction stormwater management practices have been constructed in conformance with the SWPPP. Qualified inspector shall sign the "Final Stabilization" and "Post -Construction Stormwater Management Practice" certification statements on the Notice of Termination (NOT). GerternlRegttiretnents __ • A copy of the SPDES General Permit (GP -0-15-002), the signed Notice of Intent (NO[), NOI acknowledgement letter, SWPPP, MS4 SWPPP Acceptance Forms, and inspection reports shall be maintained onsite until the site has achieved final stabilization. • Built up sediment shall be removed from any silt fence when it has reached one-third the height of the fence / dike. • Sediment fencing and wetland protection barrier shall be inspected for depth of sediment, and tears, to see if fabric is securely attached to the fence posts, and to see that the fence posts are firmly in the ground. The construction entrances shall be cleaned of sediment and redressed when voids in the crushed stone become filled and vehicular tracking of sediment is occurring. • Dust shall be controlled on access points and other disturbed areas subject to surface dust movement and blowing. • Stabilization fabric and check dams shall be inspected to ensure that slopes and swales are not being eroded. Fabric shall be replaced / reinstalled and check dams added as necessary to prevent any such erosion. • Inspection of diversion swales shall be conducted to check condition of Swale. • Temporary sediment basins shall be inspected to check condition of basin. They shall be cleaned immediately once accumulated sediment reaches a depth of 1/3 the depth of the basin. Sediment basins will be converted to permanent stormwater management ponds upon project completion. All accumulated sediment shall be removed and capacity returned to design volumes. • Inspection must verify that all practices are adequately operational, maintained properly and that sediment is removed from all control structures. • Inspection must look for evidence of soil erosion on the site, potential of pollutants entering drainage systems, problems at the discharge points, and signs of soil and mud transport from the site to the public road. Post -Construction Stormwater Inspection and Maintenance Practices The Town of Co•tlandville will maintain ownership of the development and be responsible for maintenance of the stormwater management/treatment practices. Long-term inspection fot'ms for the stormwater management practices (included in Appendix F of this plan) are referenced from Appendix G of the New York State Stormwater Management Design Manual. -15- Inventory for Pollution Prevention Plan: The materials or substances listed below are expected to be within the project area during construction: • Portland cement concrete. • Fertilizers / seeding materials. • Stone. • Bituminous asphalt. • Petroleum based products. • Silt fence fabric. • Lumber. • Pavement marking paint. • HDPE pipe, PVC pipe, and CMP. • Bonded fiber matrix material. • HDPE Geomembrane material. Spill Prevention: The following are the material management practices that shall be used to reduce the risk of spills or other accidental exposure of materials and substances to storanvater runoff. Good Housekeeping The following good housekeeping practices shall be followed within project areas during construction: • An effort shall be made to store only enough products required to do the job. • All materials stored within project areas shall be stored in a neat, orderly manner in their appropriate containers and, if possible, under a roof or other enclosure. • Products shall be kept in their original containers with the original manufacturer's label. • Substances shall not be mixed with one another unless recommended by the manufacturer. • Whenever possible, all of a product shall be used up before disposing of the container. • Manufacturers' recommendations for proper use and disposal shall be followed. • The project superintendent shall inspect daily to ensure proper use and disposal of materials. Hazardous Products These practices are used to reduce the risks associated with hazardous materials: • Products shall be kept in original containers unless they are not resealable. • Original labels and material safety data shall be retained. • If surplus product must be disposed of, manufacturers' or local and state recommended methods of proper disposal shall be followed. • Material Safety Data Sheets for all hazardous products shall be within the project area for the duration of construction. -16- c-+ Yk- Product Specific Practices The following product -specific practices shall be followed within the project areas: Petroleum Products All project related vehicles shall be monitored for leaks and receive regular preventive maintenance to reduce the chance of leakage. Petroleum products shall be stored in tightly sealed containers which are clearly labeled. Any asphalt substances used during construction shall be applied according to the manufacturer's recommendations. Fertilizers used shall be applied only in the minimum amounts recommended by the manufacturer. t7nce applied, fertilizer shall be worked into the soil to limit exposure to stormwater. Fertilizers shall be stored in a covered or other contained area. Paints All containers shall be tightly sealed and stored when not required for use. Excess paint shall not be discharged to the storm sewer system but shall be properly disposed of according to manufacturer's instructions or State regulations. Concrete Trucks Concrete trucks shall be allowed to wash out within project areas provided that the contractor provides an area which collects and contains any concrete / slurry material washed from trucks for recovery and disposal at a later time. No concrete / sturry shall be discharged from the property at any time of construction. If such washing is anticipated, the contractor shall submit a plan detailing the control of concrete / slurry to the engineer for approval. Watercourse Protection Construction operations shall be conducted in such a manner as to prevent damage to watercourses from pollution oI debris, sediment, or other foreign material, or from manipulation, from equipment andlor materials in or near the watercourse. The contractor shall not return directly to the watercourse any water used for wash purposes or other similar operations which may cause the water to become polluted with sand, silt, cement, oil or other impurities. If the contractor uses water from the water course, the contractor shall construct an intake or temporary dam to protect and maintain watercourse water quality. Spill Control Practices The contractor will be responsible for preparing a project area specific spill control plan in accordance with local and NYS DEC regulations. At a minimum this plan should: • Reduce stormwater contact if there is a spill. • Contain the spill. • Stop the source of the spill. Dispose of contaminated material in accordance with manufactures procedures, and NYS DEC regulations. o Identify responsible and trained personnel. a Ensure spill area is well ventilated. -17- Updating the SWPPP: The SWPPP shall be updated/revised as conditions merit or as directed by the regulating authority. The attached inspection forms included with this document allows for the certification of any updates/revisions. SWPPP Certification: Contracting Firm Information: Contracting Firm Address Cily/Torvn State Zip Site Location: NYS Route 13 and Gracie Road Town of Cortlandville Cortland County, New York -18- Contractor' -Ce Certi tendon ---------------------- I hereby certify that I understand and agree to comply with the terms and conditions of the aPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the terms and conditions of the most current version of the New York State Pollutant Discharge Elimination System (SPDES) general permit for stormwater discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I 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 adininistrative proceedings. Signnlrtre (Conlrrrcto+✓Subconlrrrctor) Dnte For Respans(b(e For Signntrrre (Trainer/ Co»trnc(or) Date For Responsible For Signnlare (Cae(rnctor/Subeonlrnefor) Dn(e For Responsible For Signnt+tre (Trained Cmarnc[ar) Dnte For Responsible Far -19- APPENDIX A Soils Infornantion Map Unit Description: Howard gravelly loam, 0 to 3 percent slopes ---Cortland County, New York Cortland County, New York 125A—Howard gravelly loam, 0 to 3 percent slopes Map Unit Setting National map unit symbol: 2rwbk Elevation: 160 to 2,460 feet Mean annual precipitation: 31 to 70 inches Mean annual air temperature: 39 to 52 degrees F Frost -free period: 105 to 180 days Farmland classification: AU areas are prime farmland Map Unit Composition Howard and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Howard Sett ing Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down-slope shape: Convex, linear Across -slope shape: Convex, linear Parent material: Gravelly loamy glaciofluvial deposits over sandy and gravelly glaciofluvial deposits, containing significant amounts of limestone Typical profile Ap - 0 to 9 inches: gravelly loam E/B - 9 to 24 inches: very gravelly loam Bt - 24 to 45 inches: very gravelly loam C - 45 to 72 inches: stratified extremely gravelly sand Propert ies and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class. Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 6.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 15 percent Available water storage in profile: Low (about 5.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A L SIJ Natural Resources Web Soil Surv ey 5/1 312 01 6 Conservation Service National Cooperative Soil Survey Page 1 of 2 Map Unit Description: Howard gravelly loam, 0 to 3 percent slopes ---Cortland County, New York Minor Components Phelps Percent of map unit: 5 percent Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down-slope shape: Concave, linear Across -slope shape: Convex, linear Lansing Percent of map unit: 5 percent Landform: Hills, till plains, drumlinoid ridges Landform position (two-dimensional): Summit, shoulder Landform position (three-dimensional): Crest, side slope Down-slope shape: Convex, concave Across -slope shape: Convex, linear Data Source Information Soil Survey Area: Cortland County, New York Survey Area Data: Version 13, Sep 25, 2015 Ltia� Nahual Resources Web Soil Survey 517312016 � Conservation Service National Cooperative Soil Survey Page2of2 Map Unit Description: Howard gravelly loam, 3 to 8 percent slopes ---Cortland County, New York Cortland County, New York 1256—Howard gravelly loam, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 2rwbl Elevation: 160 to 2,460 feet Mean annual precipitation: 31 to 70 inches Mean annual air temperature: 39 to 52 degrees F Frost -free period: 105 to 180 days Farmland classification: All areas are prime farmland Map Unit Composition Howard and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Howard Sett ing Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down-slope shape: Convex, linear Across -slope shape: Convex, linear Parent material: Gravelly loamy glaciofluvial deposits over sandy and gravelly glaciofluvial deposits, containing significant amounts of limestone Typical profile Ap - 0 to 9 inches: gravelly loam EB - 9 to 24 inches: very gravelly loam Bt - 24 to 45 inches: very gravelly loam C - 45 to 72 inches: stratified extremely gravelly sand Propert ies and qualities Slope: 3 to 8 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 6.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding., None Frequency of ponding: None Calcium carbonate, maximum in profile: 15 percent Available water storage in profile: Low (about 5.1 inches) Interpretive groups Land capability classification (irri gated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A 1,5u.� Natural Resources Web Soil Surv ey 5/13/2016 Conservation Service National Cooperative Soil Survey Page 1 of 2 Map Unit Description: Howard gravelly loam, 3 to 8 percent slopes ---Cortland County, New York Minor Components Phelps Percent of map unit: 5 percent Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down-slope shape: Concave, linear Across -slope shape: Convex, linear Lansing Percent of map unit: 5 percent Landform: Hills, till plains, drumlinoid ridges Landform position (two-dimensional): Shoulder Landform position (three-dimensional): Crest, side slope Down-slope shape: Convex, concave Across -slope shape: Convex, linear Data Source Information Soil Survey Area: Cortland County, New York Survey Area Data: Version 13, Sep 25, 2015 15D.� Natural Resources Web Soil Survey 5!73+2076 Conservation Service National Cooperative Soil Survey Page 2 of 2 Map Unit Description: Howard gravelly loam, 8 to 15 percent slopes ---Cortland County, New York Cortland County, New York 125C—Howard gravelly loam, 8 to 15 percent slopes Map Unit Setting National map unit symbol: 2rwbm Elevation: 160 to 2,460 feet Mean annual precipitation: 31 to 70 inches Mean annual air temperature: 39 to 52 degrees F Frost -free period: 105 to 180 days Farmland classification: Farmland of statewide importance Map Unit Composition Howard and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Howard Sett ing Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down-slope shape: Convex, linear Across -slope shape: Convex, linear Parent material: Gravelly loamy glaciofluvial deposits over sandy and gravelly glaciofluvial deposits, containing significant amounts of limestone Typical profile Ap - 0 to 9 inches: gravelly loam E/8 - 9 to 24 inches: very gravelly loam Bt - 24 to 45 inches: very gravelly loam C - 45 to 72 inches: stratified extremely gravelly sand Properties and qualities Slope: 8 to 15 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 6.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 15 percent Available water storage in profile: Low (about 5.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: A F�D� Natwal Resources Web Soil Surv ey 5113/2016 Conservation Service National Cooperative Soil Survey Page 1 of 2 Map Unit Description: Howard gravelly loam, 8 to 15 percent slopes ---Cortland County, New York Minor Components Lansing Percent of map unit: 7 percent Landform: Hills, till plains, drumlinoid ridges Landform position (two-dimensional): Backslope, shoulder Landform position (three-dimensional): Side slope Down-slope shape: Convex, concave Across -slope shape: Convex, linear Phelps Percent of map unit: 3 percent Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down-slope shape: Concave, linear Across -slope shape: Convex, linear Data Source Information Soil Survey Area: Cortland County, New York Survey Area Data: Version 13, Sep 25, 2015 tso� Natural Resources Web Soil Survey 5/1312016 � Conservation Service National Cooperative Soil Survey Page 2 ort Map Unit Description: Howard gravelly loam, 15 to 25 percent slopes ---Cortland County, New York Cortland County, New York 125D—Howard gravelly loam, 15 to 25 percent slopes Map Unit Setting National map unit symbol: 2rwbj Elevation: 160 to 2,460 feet Mean annual precipitation: 31 to 70 inches Mean annual air temperature: 39 to 52 degrees F Frost -free period: 105 to 180 days Farmland classification: Not prime farmland Map Unit Composition Howard and similar soils. 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Howard Sett ing Landform: Terraces, valley trains Landform position (two-dimensional): Backslope, summit Landform position (three-dimensional): Riser, tread Down-slope shape: Convex, linear Across -slope shape: Convex, linear Parent material: Gravelly loamy glaciofluvial deposits over sandy and gravelly glaciofluvial deposits, containing significant amounts of limestone Typical profile Ap - 0 fo 9 inches: gravelly loam FIB - 9 to 24 inches: very gravelly loam Bt - 24 to 45 inches: very gravelly loam C - 45 to 72 inches: stratified extremely gravelly sand Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.60 to 6.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum in profile: 15 percent Available waterstorage in profile: Low (about 5.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: A l_�D.� Nalwal Resources Web Soil Surv ey 5/13/2016 Conservation Service National Cooperative Soil Survey Page 1 of 2 Map Unit Description: Howard gravelly loam, 15 to 25 percent slopes ---Cortland County, New York 25, 2015 Minor Components Lansing Percent of map unit: 5 percent Landform: Hills, till plains, drumlinoid ridges Landform position (two-dimensional): Backslope, shoulder Landform position (three-dimensional): Side slope Down-slope shape: Convex, concave Across -slope shape: Convex, linear Valois Percent of map unit: 5 percent Landform: Hills, till plains, drumlinoid ridges Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Convex, linear Across -slope shape: Convex Data Source Information Soil Survey Area: Cortland County, New York Survey Area Data: Version 13, Sep 25, 2015 C;o.� Natural Resources Web Soil Survey 511 312 01 6 Conservation Service Nagonal Cooperative Soil Survey Page 2 of 2 APPENDIX B Historic Preservation Information NEW YORK STATE OF OPPORTUNITY. ANDREW M. CUOMO Governor June 01.2016 Parks, Recreation, and Historic Preservation Mr. Paul Powers Powers Archaeology LLC 180 Avon Road Rochester, NY 14625 ROSE HARVEY Commissioner Re: DEC Cortlandville Athletic Complex Project Gracie Road at NYS Route 13, Cortlandville, NY 16PRO3606 Dear Mr. Powers: Thank you for requesiing the comments of the Division for Historic Preservation of the Office of Parks, Recreation and Historic Preservation (OPRHP). We have reviewed the submitted materials in accordance with the New York State Historic Preservation Act of 1980 (section 14.09 of the New York Parks, Recreation and Historic Preservation Law). These comments are those of the Division for Historic Preservation and relate only to Historic/Cultural resources. They do not include potential environmental impacts to New York State Parkland that may be involved in or near your project. Such impacts must be considered as part of the environmental review of the project pursuant to the State Environmental Quality Review Act (New York Environmental Conservation Law Article 8) and its implementing regulations (6NYCRR Part 617). OPRHP has reviewed the Phase 1 archaeological survey report submitted for this project -Phase IA and IB (Phase I) Cultural Resource Investigations for the Proposed Cortlandville Athletic Complex Project, Town of Cortlandville, Cortland County, New York (Powers Archaeology, 18 May 2016). Based on the information provided, OPRHP recommends that the planned project will have No Impact on cultural resources listed or eligible for listing on the State or National Register of Historic Places. This recommendation pertains only to the Area of Potential Effects (APE) examined during the above - referenced investigation. Should the project design be changed OPRHP recommends further consultation with this office. If you have any questions please don't hesitate to contact me. Sincerely, 640 Philip A. Perazio, Historic Preservation Program Analyst - Archaeology Unit Phone: 518-268-2175 e-mail: Dhiliomeraziordrarks.mtmov via email only cc: James Trasher, CHA Laura Cassalia, CUA Division for Historic Preservation P.O. Box 189 , Waterford, New Yodc 12788-0189 • (518) 237-8643 • vn+w.nysparks.com I. PHASE I MANAGEMENT SUMMARY Project Name: Phase IA and IB (Phase 1) Cultural Resource Investigations for the Proposed Cortlandville Athletic Complex Project, Town of Cortlandville, Cortland County, New York, Rroject Description: The project encompasses the construction of an athletic complex on approximately It 1.92 acres / 45.92 hectares on the north side of NYS Route 13, east of Gracie Road within the Tow» of Cortlandville, Cortland County, New York. Approximately 111.92 acres / 45.92 hectares will be impacted by the proposed project, and are considered the Area of Potential Effect (APE). Project Location: The proposed project is on the north side of NYS Route 13, east of Gracie Road within the town of Cortlandville, Cortland County, New York (0430 33' 15.37" N, 0760 14' 25.47" W). The project area can be accessed via Gracie Road and NYS Route 13. County: Cortland County Minor Civil Division Number: 02302 (Town of Cortlandville) USGS 7.5 Minute Quadrangle Map: 1955 USGS 7.5' Cortland, N.Y. Quadrangle SEQR Review: The Town of Cortlandville has requested Phase I Cultural Resource Investigations as part of a State Environmental Quality Review (SEQRA). Involved State and Federal Agencies: NYSDEC Surrey Area Acreage: 111.92 acres / 45.92 hectares Depth: Undetermined Number of Acres Surveyed: 111.92 acres / 45.92 hectares Archaeological Sm•vey Overview Number &Interval of Shovel Tests: 10 at 50 -ft / IS -m intervals Number & Size of Units: NA Width of Plowed Strips: Entire field plowed and disced Surface Survey Transect Interval: 10 -ft / 3.3-m Results of Archaeological Survey Number &Name of prehistoric sites identified: 0 Number & Name of historic sites identified: 0 Number & Name of sites recommended for Phase II/Avoidance: 0 Results of Architectural Survey Number of buildings/structures/cemeteries within project area (APE): 0 Number of buildings/structures/cemeteries adjacent to project area (APE): 0 Closest Archaeological Site to the APE: Finger Lakes East Business Park Precontact Site 3 (2302.000269), 2,972-11 / 906-m northeast of APE Native American Burials Less Than ''/< Mile from APE: None SRHP/NRHP Historical Review Nwnber of previously determined NR listed or eligible buildings/structureslcemeteries/districts: 0 Number of identified eligible building/strucnnes/cemeteries/districts: 0 ®Powers Archaeology, LLC I blay 18, 2016 Recommendations of Phase I Cultural Resource Investigations: These Cultural Resource Investigations were performed only for the APE required for the Proposed Cortlandville Athletic Complex Project. Based upon these results, Powers Archaeology, LLC recommends no additional archaeological investigations. Report Authors: Paul Powers and Kyle Somerville Date of Report: May I8, 2016 Report Prepared Bair: Mr. Paul Powers Dr. Kyle Somerville °Powers Archaeology, LLC 2 \4ay 18, 2016 APPENDIX C Hydrologic Analyses saua�r.� C design/construction solutions FIGURE 1 Scale 1" = 2000' I 31591 USGS Project Location Map Gracte Road Atkletic Complex Project Wetland Delineation Report Cortlandville, Cortland County, New York Service Layer Credits: Copydght:©2013 National Geographic Society, icubed Cortland &Groton USGS Quadrangles Date: 1955 & 1970 VAD, j " (WCIa..W Hdc -. 1 NaE VaD,f PdA iHdD iW Val): i IVac; WIC; * HOC W 33 VAE 1 HtlB HdB HOB THdD Val sy � a A J� design/construction solutions it FIGURE 2 Scale l" = 400' 31591 I Project Locallon AaA-Alden and Birdsall sill learns HdA; HdB; HdC; HdD- Howard gravelly loams LbB; LbC- Lansing gravelly sit loam Mc - Muck PdA- Phelps gravelly sit loam VaC; VaD; VaE - Valois -Howard gravelly looms W - Water HUD _ �Wg � LhC W NRCS Soils Map Gracie Road Athletic Complex Project Wetland Delineation Report Cortlandville, Cortland Countv. New York Image Courtesy of USGS and EarthstarGeographics SIO 2014 Nokia 0 Photo Date: 06/2013 Soil Data Courtesy of the Natural Resource Conservation Service - DA -5 .r 0.50 AC CN=66 f6� f =58 \ 16.08 AC CN=62 r DA -1_ _ 1 45.93 AC ti \ 1 CN=66 r' r r DA -2 26.55 AC CN=67 � 1 - ; . / / y� m -1e EXISTING CONDITIONS PROJECT No. 31591 TOWN OF CORTLANDVILLE pgTE; g91 GRACIE ROAD ATHLETIC COMPLEX SCALE: r'.zso' FIGURE 3 J " DA -5 L 0.70 AC D�4_ ; -o CN=56 A -3K 11.15 AC S 55 AC i CN=52 4F= I ( J B 10.3 CN=4 PROJECT NO. Com- PROPOSED CONDITIONS 31591 TOWN OF CORTLANOVILLE DATE: 9/8/16 GRACIE ROAD ATHLETIC COMPLEX SCALE: 1`=250* FIGURE 4 N r INFILTRA Op BASIN #,-ILA 9IORETENSION AREA #4.2 - i 'J SURF f / BASIN #3. 3F CHAMBER PIPES 'INFILTRATION. BASIN > / (EXISTING LOW AREA)` BIORETE ON - - AREA 1 -e rr J TEN 0 AR - / O »l ARE p3B - - O TION , GI PRACTICES PROJECT NO. mow 31591 TOWN OF CORTLANDVILLE DATE: 9/8/16 GRACIE ROAD ATHLETIC COMPLEX SCALE: 1"=250' I FIGURE 5A r INFILTRA Op BASIN #,-ILA 9IORETENSION AREA #4.2 - i 'J SURF f / BASIN #3. 3F CHAMBER PIPES 'INFILTRATION. BASIN > / (EXISTING LOW AREA)` BIORETE ON - - AREA 1 -e rr J TEN 0 AR - / O »l ARE p3B - - O TION , GI PRACTICES PROJECT NO. mow 31591 TOWN OF CORTLANDVILLE DATE: 9/8/16 GRACIE ROAD ATHLETIC COMPLEX SCALE: 1"=250' I FIGURE 5A VARIES SEE CHART �' MACH 5 PLAWNG SOL 1' GRAVEL B)ORETENTION AREA INFORMATION �BIORETENTIXN ID LENGTH (FT) I WIDTH MATERIALS SPECIFICATIONS FOR RIORFTENPON Pp AL NDNF SOL THE SOL SHALL BE UNIFORM MIX, FREE OF STONES, S%YPS, ROOTS. OR OTHER Ski LAR CEECTS LARGER THAN TWO INCHES. NO ONES MATERIALS OR SUBSTANCES SHALL BE MIXED OR DUMPED WHIN WE 8 ORETENTIO4 AREA THAT MAY BE HARMFUL TO PLANT GROWN, OR PROVE A HINDRANCE TO NE PLANTING OR MAINTENANCE OPERAPONS. THE PLANENG SC SHALL BE FREE OF NOXIOUS WEEDS. HE PLANTING SOL SHALL HE TESTED AND SHALL MEET ME FOLLOMRG CRITERIA PH RANGE 5.2-2.0 ORGANIC MATTER 15-4X MAGNESIUM M LB/AC POTASSUM K20 65 IB/AC SOLUBLE SALTS NOT TO EXCEED 500 PPM BCRETENTON AREA SHALL HAYS A MINIMUM OF ONE TEST. EACH ZEST SHALL CONSIST BE BON THE STANDARD SOIL ZEST FOR PH, PHOSPHORUS, AND POTASS'UM AID ADDITIONAL TESTS CE ORGANIC MATTER, ADD SOLUBLE SALTS. A TEXTURAL ANALYSS IS REQUIRED FROM THE SHE STOCKPILED TOPSOL IF TOPSDL IS IVPMR04 THEN A ENTIRE ANALnS SHALL BE PERFORMED FOR FACT LOCATION WHERE THE TOPSOIL WAS EXCAVATED SINCE UFFERENT LABS CALIBRATE THEIR TESTING EQUIPMENT OFFERENRY, ALL TESTING RESULTS SHALL COME FROM THE SAME TESTING FACILITY SHOULD NE PH FALL WT BE NE ACCEPTABLE RANGE, IT MAY BE MOOTED (HIGHER) WIN UVE OB (LOWER) 111TH IRON SULFATE PLUS SULFUR - IN FENNO ULFURBiETFNDW AREA AYp ME REWIRED 5 WE 810.4ETENTION iAUUtt MAY NOT BE CONSTRUCTED UNTIL ALL CW TRIBUTNG DRAINAGE AGFA HAS BEEN STABILIZED BACKHLL WHEN POSSIBLE, USE T) (F EXCAVATION NOES TO REMOVE ORIGINAL SqL E BIOtEIENTW AREAS ARE EXCAVATED USING A LOADER, NE CONTRACTOR SNWLD USE WDE IRACN OR MARSH TRACK EQUIPMENT, BR UGHT EQUIPMENT WN TURF TYPE TIRES. USE EQUIPMENT WTH NARROW TRACKS NIRRO'W TIRES LARGE LUGS, OR 318 2 22 O COMPACTION WILL SGhIFlCANRY CU41RIBlITE TO DESIGN FAILURE. CCMPACTW CAN BE ALLEVIATED AT NE BASE BE NE SIORETENDON FACNTY USING A PRIMARY RUNG OPERATION SUCH AS A CHISEL PLOW, RIPPER, OR 25 0 ( 30 3 43. 22 1 3D 350 350 20 ROTOTILL 2 TO 3 INCHES OF SAND INTO NE BASE OF TIE BIORETQ:TION FAOUTY BEFORE BACK FILLING THE REWIRED SAND LAYER, PUMP ANY POINDED 131 (CENTER) WATER FUTURE PREPARING (ROTOPWNG) BASE. 4.1 24.4 (ENDS) 2 I 4.2 134 14 MATERIALS SPECIFICATIONS FOR RIORFTENPON Pp AL NDNF SOL THE SOL SHALL BE UNIFORM MIX, FREE OF STONES, S%YPS, ROOTS. OR OTHER Ski LAR CEECTS LARGER THAN TWO INCHES. NO ONES MATERIALS OR SUBSTANCES SHALL BE MIXED OR DUMPED WHIN WE 8 ORETENTIO4 AREA THAT MAY BE HARMFUL TO PLANT GROWN, OR PROVE A HINDRANCE TO NE PLANTING OR MAINTENANCE OPERAPONS. THE PLANENG SC SHALL BE FREE OF NOXIOUS WEEDS. HE PLANTING SOL SHALL HE TESTED AND SHALL MEET ME FOLLOMRG CRITERIA PH RANGE 5.2-2.0 ORGANIC MATTER 15-4X MAGNESIUM M LB/AC POTASSUM K20 65 IB/AC SOLUBLE SALTS NOT TO EXCEED 500 PPM BCRETENTON AREA SHALL HAYS A MINIMUM OF ONE TEST. EACH ZEST SHALL CONSIST BE BON THE STANDARD SOIL ZEST FOR PH, PHOSPHORUS, AND POTASS'UM AID ADDITIONAL TESTS CE ORGANIC MATTER, ADD SOLUBLE SALTS. A TEXTURAL ANALYSS IS REQUIRED FROM THE SHE STOCKPILED TOPSOL IF TOPSDL IS IVPMR04 THEN A ENTIRE ANALnS SHALL BE PERFORMED FOR FACT LOCATION WHERE THE TOPSOIL WAS EXCAVATED SINCE UFFERENT LABS CALIBRATE THEIR TESTING EQUIPMENT OFFERENRY, ALL TESTING RESULTS SHALL COME FROM THE SAME TESTING FACILITY SHOULD NE PH FALL WT BE NE ACCEPTABLE RANGE, IT MAY BE MOOTED (HIGHER) WIN UVE OB (LOWER) 111TH IRON SULFATE PLUS SULFUR - IN FENNO ULFURBiETFNDW AREA AYp ME REWIRED 5 WE 810.4ETENTION iAUUtt MAY NOT BE CONSTRUCTED UNTIL ALL CW TRIBUTNG DRAINAGE AGFA HAS BEEN STABILIZED BACKHLL WHEN POSSIBLE, USE C EXCAVATION NOES TO REMOVE ORIGINAL SqL E BIOtEIENTW AREAS ARE EXCAVATED USING A LOADER, NE CONTRACTOR SNWLD USE WDE IRACN OR MARSH TRACK EQUIPMENT, BR UGHT EQUIPMENT WN TURF TYPE TIRES. USE EQUIPMENT WTH NARROW TRACKS NIRRO'W TIRES LARGE LUGS, OR w HIGH PRESSURE TIRES FILL CAUSE EXCESSYE C IE NO DESINW RESULTING IN REDUCED INFlL1RATg4 RATES AND STORAGE VQUMES AND IS NOT ACCEPTABLE. O COMPACTION WILL SGhIFlCANRY CU41RIBlITE TO DESIGN FAILURE. CCMPACTW CAN BE ALLEVIATED AT NE BASE BE NE SIORETENDON FACNTY USING A PRIMARY RUNG OPERATION SUCH AS A CHISEL PLOW, RIPPER, OR SUBSQUER. iRESE TILLING OPERATIONS WE TO REfRACTURE THE SOL PROHLE NEWISH WE 12 INCH COVPACTW ZOITE. SUBSDNE METHMS; MUST BE APPROVED BY THE ENGINEER ROTOPLLERS TYPICALLY 00 NOT TIL OEM ENOUGH TO REDUCE DIE EFFECTS OF COMPACTION FROM HEAVY EQUIPMENT. - ROTOTILL 2 TO 3 INCHES OF SAND INTO NE BASE OF TIE BIORETQ:TION FAOUTY BEFORE BACK FILLING THE REWIRED SAND LAYER, PUMP ANY POINDED WATER FUTURE PREPARING (ROTOPWNG) BASE. WHEN BACK FlWNG WE TOPSOIL OVER NE SAND LAYER, FIRST PLACE 3 TO 4 INCHES OF TOPSOIL OWN NE SAND, NEN RETORT WE SAND/TOPSOIL TO CREATE A GRADATON ZONE BACKFILL ME REMA!NGER OF WE TOPSOL TO FINAL (RADE. WHEN BACKFlWNG NE B'ORETENTON FAOWA, MACE SWL IN UFTS 12' OR GREATER. DO NOT USE HEAVY EQUIPMENT "WIN THE VORETENDON AREA HEAVY EQUIPMENT CAN BE USED AROUND NE PERIVETER OF NE AREA TO SUPPLY SOLS AND SAND. GRACE BIORETENDON MATERIALS BY HMO OR WE TIGHT EQUIPMENT SUCH AS A COMPACT LOADER GR A OOZER/LOADER WN MARSH RACKS. PLANT INSTALLATION THE PLANT ROOT BALL SHOULD BE PLANTED SO K TH OF NE BALL IS ABOVE FINAL GRADE SURFACE. RODT STOCK BE NE PLANET MATERIAL SHALL BE KEPT MOST DURING TRANSPORT AND ON-STE STORAGE. NE DIAMETER CE NE PLANERS PIT SHALL BE AT LEAST 6 INCHES LARGER NAR ME DIAMETER BE NE PLANER BALL SET AND MAINTAIN WE PLANT STRAIGHT DURING NE ENTRE PLANNING PROCESS. E THOROUGHLY WATER GROUND BED COVER AFTER INSTALLATON. GRASSES AND LEGUME SEED SHALL BE TILLED INTO ME SQL TO A DEPTH OF AT LEAST WE INCH. GRASS ANC LEGUME PLUGS STALL BE PLANTEO FOTLO'WNG NE NCI -GRASS GROUND COVER PLAHN O WECIFlCATONS. NE TOPSOIL SPEOFICATWS PROVIDE ENOUGH ORGANIC MATERIAL TO ADEQUATELY SUPPLY NUTRIENTS FROM NATURAL CYCUNG THE PR�UARY FUNCTION OF Y. ME BIGNETSITON SIRUCNRE 1S TO IMPROWc WATER QEWTY. AWING FERTUZERS DEFEATS, CR AT A M:NVUV, WKI ES THIS GOAL QTLY AW FERTI IF WOOD CORPS OR MULCH 15 USED TO AMEND TIE SOL ROTOTLL AREA FERTILIZER AT A RATE OF 2 L6/100 50 FT. C VISCEILLANEM 5 o-,.ymlwlems I PROJECT NO. ��� A BIORETENTION AREA DETAIL 3t 59t V `� T01YN OF CORTLANDIALLE I DATE: 9f8/t6 GRACIE ROAD ATHLETIC COMPLEX SCALE: NTS I FIGURE 5B g C CHAMBER PIPES _ (AREA 3D) 1 — TI i TI BIORETENTON AREA (TIP.) 1 i d � I CHAMFER PIPES CHAMBER PIPES I (AREA 3C) 'I (AREA 38), I I � d o-,.ywgpie�e PROJECT NO. CHAMBER PIPE LAYOUT 31591 TOWN OF CORTLANDMLLE I DATE: 9/8/16 n TY GRACIE ROAD ATHLETIC COMPLEX T_ SCALE: 1• = 40' I FIGURE 6A j G � II 8 i i i 4 CHAMBER PIPES _ (AREA 3D) 1 — TI i TI BIORETENTON AREA (TIP.) 1 i d � I CHAMFER PIPES CHAMBER PIPES I (AREA 3C) 'I (AREA 38), I I � d o-,.ywgpie�e PROJECT NO. CHAMBER PIPE LAYOUT 31591 TOWN OF CORTLANDMLLE I DATE: 9/8/16 n TY GRACIE ROAD ATHLETIC COMPLEX T_ SCALE: 1• = 40' I FIGURE 6A ACCEPTABLE FILL MATERIALS: STORMTECH MCmI CHAMBER SYSTEMS PERIMETER STONE (BEE NOTE B) IXCAVgTION WALL (CAN BE SLOPED OR VFR11CP1) O•(twn NOTES: AOS GEOSTNTIIETCS 6OtT AROUND LLEW,CRUSHED,ANf �.iC35w ENO CAP PAVEMENL LIVER (DESIGNED r/ � YSITE DESIGN EN WFBt) o\� - _ ._._ �. i Iwo m,n)MIN- (24 m) MAX 1Y(90O=)MIN mm) I � DEPTH OF STONE TO BE R DETERMINED I= 1`J�I T I/rn rl^ II m' 1u�nmnrlmnl�_II_ ui (L JJ III (USI fl1 ,m. W I I)W 111 II '\,L W Ill FJ, y � BY SITE DESIGN ENGINEER 9'pJOmm)MIN CRADE SODS (2JOmm7 MW >T (19w mm) t2'(Jw mm)TVP (SEE NOTE6) t. MG3w0 CHAMBERS SHALL LONFOPM TO THE REQUIREMENTS OFASTM F261B•STPNDPRD SPECIFICATION FOR POLYPROPYLEIJE(PP)LORRUGAT®WIll S?ORMNATFR Ld1ECTION CWJABERS. 2. MWwO CHAMBERS SHgLL BE DESIGNED IN ACCOPOANCE WTH ASTM F2TB]'STANDARD PRACTICE FORSTEULTIRPI. DESIGN OFTHERMOPLASTIC LORRUGATEO WALLSTDRMNATERCOLIECfIONCWMBERS•. J. •gCCEPTgBLE FILL MATERULL5 TABLE ABOVE PRWIOES MATERIAL LOCATIONS,DESCRIPTIONS,GRADATIONS, ANO COMPACTIONREDUWENIFNTS FOR FOUNDATION, EMBEDMFNT,PND FILLMATFRWS. A. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING REGIGTANGE(ALLOWABLE BEARING CAPACIIY) OF THE SUBCRADE JOGS AND THE DEPTH OF FOUNDATION STONEWTH CONSIDERATIONFORTIEW 050FEXPECTEDSOILMOLSRIRECONDIRONS. PERIMETER STONE MUST BE EXTENDED HORRONTALLYTO THE EXCAVATION WALL FOR BOTH VFRTICPLANOSLOPED EXCAVATION WA11S 5. 'CISPLACED,PRYSOIUI MRIALCANBEPLACEDINIAYER'CUPTOTHEFINISHMGRADEMOSTPAVEMENTSUBBPSESOILJCANBEUSEDTOREPIAI£THEMATERMLREOUOiEM OFIAYERC OR V' ATTHE SITE DESIGN ENGINEER'SDLSQtEITCN. PASHTO MATERIAL COMPACTION / DENSITY MATERIAL LOCATION DESCRIPTION � o CLASSIFICATIONS REQUIREMENT FINAL F9.L: FlLL MATERIAL FOR LAYER V STARTS F PREPARE N EHAWSR'SPLANS . D FFLEMTCPOFTENT OR UNPAVEDFINISHED MNANS FOR PAD= ENGINEEROCNNS. CHEM ENGINEERS PLANS. NIA AWEDISTALLAEDESIMS PAWEDINSTALLATIONS GRACE ABLEPAVETETH TPAVE EN RPDEPBOVENOTETIUT PAVEMENT SUBBASE EREQUILANSFORPAYEIAENT SUBCRAOE REOUIRENNp:NNB. AND TION REESRBNGENT MgTERIFLANO PREPPAATION REOUPVEMENIS MAV BE APRT OF THETY IAYEA N AASHTOMtAS BEGIN COMPACTIONS AFTER 91•(000 mm)OF RILL; FILL GPANULAR FS. Q4% A Ri. N 3REACmm) STARTS THE PPF HEElCREft'C TOPOFTIImm) FINES OR PROCESSEDACCRECgTE FINESOADEOCESSEDGRECATATE. COMPACTADDMATERIAL ITHECHAM S!NRS COMPACTO C STONE ABOW TEUVENTHE E(VLAER) OR MAXLIFTS A MIN.N5 PROCTRDENSTmm) i H MBE .NOTE THAT PAVETIE THECHAMBER. TOP OFT MEC WV AB ERN OF AVQAEM MOST PAVEMENTSUBBASE MATERIALS CAN BE USED WLIEU ��0 i WELL GRACED ATERIASEDAND NE GRACE MINE%PROCT95%RM TINfE SUBBASE MAY BEAPART OF THE'C LAYER THEV OF THIS LAYER 3,357, A, iB], 6. w,5]. 81 8].8O. ], ]B. B. w, DENsItt FOR PROCESSED AGGRECATE AGGREGATE 9,10MATERIALS. )EMBEDMENT STONE: FILL SURROUNDING THE B CHAMBERS FROM THE FOUNDATION STONE CN CLEAN, CRUSHED, ANGULAR STONE PASHTO NO COMPACTION REWIRED. LAYER)TOTHE'C'LAYERAVVoE J< FOUNDATION STONE FILL BELOW CHAMBERS W A FROM THE SUBGRADE UP TO THE FOOT (BOTTOM) CLEAN, CRUSHED. ANGULAR STONE PASHTO M4B' PLATE COMPACT OR ROLL TO ACHIEVER RAT THE CHAMBER SA SURFACE." TEASE NOTE 1. THE LISTED PASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST&SO BE CLEAN CRUSHED. ANGULAR FOR EXAMPLE A SPEOR=ON FOR" STONE WOUZ STATE•CLEAN, CRUSHED, ANGULAR NO. A (PASHTO MIJ) STONE•. 2. STORMTECH COMPACTION REQUIREMENTS ARE MET FOR LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9•(230 MM)(MAI LIFTS USING TWO RILL CONERACE3 WITH AV®PATORYCOMIRI 3 WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY ROUND OR CRAGGWC WITHOUT COMPACTION PERIMETER STONE (BEE NOTE B) IXCAVgTION WALL (CAN BE SLOPED OR VFR11CP1) O•(twn NOTES: AOS GEOSTNTIIETCS 6OtT AROUND LLEW,CRUSHED,ANf �.iC35w ENO CAP PAVEMENL LIVER (DESIGNED r/ � YSITE DESIGN EN WFBt) o\� - _ ._._ �. i Iwo m,n)MIN- (24 m) MAX 1Y(90O=)MIN mm) I � DEPTH OF STONE TO BE R DETERMINED I= 1`J�I T I/rn rl^ II m' 1u�nmnrlmnl�_II_ ui (L JJ III (USI fl1 ,m. W I I)W 111 II '\,L W Ill FJ, y � BY SITE DESIGN ENGINEER 9'pJOmm)MIN CRADE SODS (2JOmm7 MW >T (19w mm) t2'(Jw mm)TVP (SEE NOTE6) t. MG3w0 CHAMBERS SHALL LONFOPM TO THE REQUIREMENTS OFASTM F261B•STPNDPRD SPECIFICATION FOR POLYPROPYLEIJE(PP)LORRUGAT®WIll S?ORMNATFR Ld1ECTION CWJABERS. 2. MWwO CHAMBERS SHgLL BE DESIGNED IN ACCOPOANCE WTH ASTM F2TB]'STANDARD PRACTICE FORSTEULTIRPI. DESIGN OFTHERMOPLASTIC LORRUGATEO WALLSTDRMNATERCOLIECfIONCWMBERS•. J. •gCCEPTgBLE FILL MATERULL5 TABLE ABOVE PRWIOES MATERIAL LOCATIONS,DESCRIPTIONS,GRADATIONS, ANO COMPACTIONREDUWENIFNTS FOR FOUNDATION, EMBEDMFNT,PND FILLMATFRWS. A. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING REGIGTANGE(ALLOWABLE BEARING CAPACIIY) OF THE SUBCRADE JOGS AND THE DEPTH OF FOUNDATION STONEWTH CONSIDERATIONFORTIEW 050FEXPECTEDSOILMOLSRIRECONDIRONS. PERIMETER STONE MUST BE EXTENDED HORRONTALLYTO THE EXCAVATION WALL FOR BOTH VFRTICPLANOSLOPED EXCAVATION WA11S 5. 'CISPLACED,PRYSOIUI MRIALCANBEPLACEDINIAYER'CUPTOTHEFINISHMGRADEMOSTPAVEMENTSUBBPSESOILJCANBEUSEDTOREPIAI£THEMATERMLREOUOiEM OFIAYERC OR V' ATTHE SITE DESIGN ENGINEER'SDLSQtEITCN. FlcuRe 613 � o w N � O o u 8 Q tk,w N W a O K s3 � ffi a 5 FlcuRe 613 CURVE NUMBER TIME OF CONCENTRATION CALCULATIONS DA -2 CN CALCULATIONS CN AREA 'CN 1.05 EXISTING CONDITIONS 24.39 DA -1 1634.13 1.11 98 USE AREA CN AREA 'CN USE OPEN SPACE 4.08 39 159.12 OPEN SPACE ROW CROPS 39.60 67 2653.20 ROW CROPS IMPERVIOUS 2.25 98 220.50 IMPERVIOUS TOTALS 45.93 WEIGHTED CN 3032.82 58 WEIGHTED CN 66 DA -3 USE AREA CN AREA 'CN USE OPEN SPACE 0.77 39 30.03 ROW CROPS ROW CROPS 13.70 67 917.90 WOODS IMPERVIOUS 0.07 98 6.86 WOODS 1.54 30 46.20 TOTALS 16.08 1000.99 WEIGHTED CN62 DA -5 USE AREA CN AREA 'CN OPEN SPACE 0.02 39 0.78 ROW CROPS 0.48 67 32.16 TOTALS 0.50 32.94 WEIGHTED CN 68 DA -2 AREA CN AREA 'CN 1.05 39 40.95 24.39 67 1634.13 1.11 98 108.78 TOTALS 26.55 1783.86 WEIGHTED CN 67 DA -4 AREA CN AREA 'CN 6.70 67 448.90 2.10 30 63.00 TOTALS 8.80 511.90 WEIGHTED CN 58 CN CALCULATIONS PROPOSED CONDITIONS 7nEI USE AREA AREA CN AREA*CN OPEN SPACE 39 24.50 39 955.50 INFIELDIWARNING TRACK 3.02 72 217.44 IMPERVIOUS (NEW) 1.81 98 177.38 IMPERVIOUS (EXISTING) 2.08 98 203.84 TOTALS 31.41 1554.16 WEIGHTED CN 49 DA -2B USE AREA CN AREA *CN OPEN SPACE 9.52 39 371.28 IMPERVIOUS (EXISTING) 0.87 98 85.26 TOTALS 10.39 456.54 WEIGHTED CN DA -5 USE AREA CN AREA *CN OPEN SPACE 0.50 39 19.50 IMPERVIOUS (NEW) 0.20 98 19.60 TOTALS 0.70 39.10 WEIGHTED CN 56 76� USE AREA CN AREA*CN OPEN SPACE 18.23 39 710.97 IMPERVIOUS (NEW) 0.85 98 83.30 IMPERVIOUS (EXISTING) 0.23 98 22.54 WOODS TOTALS 19.31 30 816.81 WEIGHTED CN 42 7_Q! USE AREA CN AREA*CN OPEN SPACE 6.62 39 258.18 IMPERVIOUS (NEW) 2.29 98 224.42 TRAIL* 0.39 98 38.22 WOODS 1.85 30 55.50 TOTALS 11.15 576.32 WEIGHTED CN 52 *Trail is considered impervious /or runoff calculations only CN CALCULATIONS PROPOSED CONDITIONS ICont.l PRPDA-3A PRPDA-36 USE AREA CN AREA `CN USE AREA CN AREA `CN OPEN SPACE 3.59 39 140.01 OPEN SPACE 0.68 39 26.42 IMPERVIOUS (EXISTING) 0.18 98 17.64 IMPERVIOUS (NEW) 1.97 98 193.31 TOTALS 3.77 157.65 TOTALS 2.65 219.73 WEIGHTED CN 42 WEIGHTED CN 83 PRPDA-3C PRPDA-3D USE AREA CN AREA 'CN USE AREA CN AREA 'CN OPEN SPACE 0.89 39 34.89 OPEN SPACE 0.44 39 17.25 IMPERVIOUS (NEW) 2.24 98 219.65 IMPERVIOUS (NEW) 1.55 98 152.24 TOTALS 3.14 254.54 TOTALS 2.00 169.49 WEIGHTED CN 81 WEIGHTED CN 85 PRPDA-3E PRPDA-3F USE AREA CN AREA `CN USE AREA CN AREA `CN OPEN SPACE 0.47 39 18.17 OPEN SPACE 2.35 39 91.65 IMPERVIOUS (NEW) 2.01 98 197.09 IMPERVIOUS (NEW) 2.01 98 196.98 TOTALS 2.48 215.26 TOTALS 4.36 288.63 WEIGHTED CN 87 WEIGHTED CN 66 PRPDA-3G USE AREA CN AREA •CN OPEN SPACE 4.72 39 183.99 IMPERVIOUS (EXISTING) 0.07 98 6.86 TRAIL` 0.32 98 31.36 WOODS 1.44 30 43.23 TOTALS 6.55 265.44 WEIGHTED CN 41 'Trail is considered impervious for runoff calculations only TR55 Tc Worksheet Hyd. No. 1 EXDA-1 Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sqft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrogfaphs Extension for AutoCADOO Civil 3D® 2015 by Autodesk, Inc. v10.4 A B C = 0.060 0.011 0.011 = 150.0 0.0 0.0 = 2.34 0.00 0.00 1.20 0.00 0.00 9.34 + 0.00 + 0.00 = 2383.00 = 0.60 = Unpaved =1.25 31.78 = 0.00 = 0.00 = 0.015 =0.00 0.00 0.00 Paved 0.00 + 0.00 + 0.00 0.00 0.00 0.015 0.00 0.00 Paved 0.00 0.00 0.00 0.00 0.00 0.015 0.00 Flow length (ft) ({0})0.0 0.0 0.0 Travel Time (min) = 0.00 + 0.00 + 0.00 Total Travel Time, Tc............................................................................ Totals 41.12 min TR55 Tc Worksheet Hyd. No, 3 EXDA-2 Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sqft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrographs Extension for AutoCAD® Civil 3139 2015 by Autodesk, Inc. 00.4 A B C = 0.060 0.011 0.00 0.011 = 150.0 0.0 0.015 0.0 = 2.34 0.00 0.00 = 1.30 0.00 0.00 = 9.05 + 0.00 + 0.00 = 1490.00 = 1.40 = Unpaved =1.91 13.01 = 10.00 = 0.70 = 0.035 =2.24 0.00 0.00 Paved 0.00 + 0.00 + 0.00 0.00 0.00 0.015 0.00 0.00 0.00 Paved 0.00 0.00 0.00 0.00 0.00 0.015 0.00 Flow length (ft) ({0))570.0 0.0 0.0 Travel Time (min) = 4.24 + 0.00 + 0.00 Total Travel Time, Tc.................................................................4.600...... Totals 26.30 min TR55 Tc Worksheet Hyd. No. 4 EXDA-3 Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sqft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrograp hs Extension for AuIoCAD® Civil 3D® 2015 by Autodesk, Inc. 00.4 A B C = 0.060 0.011 0.011 = 150.0 0.0 0.00 0.0 = 2.34 0.00 = 0.00 0.00 = 1.90 0.00 0.00 = 7.77 + 0.00 0.015 + 0.00 = 1236.00 0.00 0.00 = 3.20 0.00 0.00 = Unpaved Paved Paved =2.89 0.00 0.00 = 7.14 + 0.00 + 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.015 0.015 0.015 =0.00 0.00 0.00 Flow length (ft) ({0})0.0 0.0 0.0 Travel Time (min) = 0.00 + 0.00 + 0.00 Total Travel Time, Tc............................................................................. Totals 14.91 min TR55 Tc Worksheet Hyd. No. 5 EXDA-4 Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sqft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrograph$ Extension for AutoCAD ) Civil 3D® 2015 by Autodesk, Inc. v10.4 A B C = 0.060 0.00 0.011 0.00 0.011 = 0.00 = 150.0 0.0 0.0 0.00 = 2.34 0.00 0.00 = 0.015 0.00 = 0.80 0.00 0.00 = 10.98 + 0.00 + 0.00 = 633.00 0.00 0.00 = 6.40 0.00 0.00 = Unpaved Paved Paved =4.08 0.00 0.00 2.58 + 0.00 + 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.015 0.015 0.015 =0.00 0.00 0.00 Flow length (ft) ({0))0.0 0.0 0.0 Travel Time (min) = 0.00 + 0.00 + 0.00 Total Travel Time, Tc............................................................................ Totals 13.57 min TR55 Tc Worksheet Hyd. No. 6 EXDA-5 Descrintion Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sgft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrographs Extension for AutoCADO Civil 31)0 2015 by Autodesk, Inc. 00.4 A B C = 0.060 0.011 0.011 0.00 = 141.0 0.0 0.0 = 2.34 0.00 0.00 0.00 = 1.60 0.00 0.00 = 0.015 = 7,92 + 0.00 + 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = Unpaved Paved Paved =0.00 0.00 0.00 0.00 + 0.00 + 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.015 0.015 0.015 =0.00 0.00 0.00 Flow length (ft) ((0})0.0 0.0 0.0 Travel Time (min) = 0.00 + 0.00 + 0.00 TotalTravel Time, Tc............................................................................. Totals 7.92 min TR55 Tc Worksheet Hyd. No. 10 PRPDA-1 Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sgft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrographs Extension for AutoCAD® Civil 3De)2015 by Autodesk, Inc. 00.4 A B C = 0.240 0.00 0.011 0.00 0.011 = 100.0 0.00 0.0 0.00 0.0 = 2.34 0.00 0.00 0.00 0.00 = 2.50 0.015 0.00 0.015 0.00 = 15.26 + 0.00 + 0.00 = 182.00 0.00 0.00 = 1.60 0.00 0.00 = Unpaved Paved Paved =2.04 0.00 0.00 1.49 + 0.00 + 0.00 = 0.79 0.00 0.00 = 3.14 0.00 0.00 = 0.50 0.00 0.00 = 0.011 0.015 0.015 =3.78 0.00 0.00 Flow length (ft) ({0))1168.0 0.0 0.0 Travel Time (min) = 5.15 + 0.00 + 0.00 Total Travel Time, Tc............................................................................. Totals 21.89 min TR55 Tc Worksheet Hyd. No. 12 PRPDA-2A Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (fUs) Travel Time (min) Channel Flow X sectional flow area (sgft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (fUs) Hydraflow Hydrographs Extension for AutoCAD(D Civil 3D® 2015 by Autodesk, Inc. v10.4 A B C = 0.240 0.011 0.011 = 100.0 0.0 0.0 = 2.34 0.00 0.00 = 0.80 0.00 0.00 24.08 + 0.00 + 0.00 = 124.00 0.00 0.00 = 0.60 0.00 0.00 = Unpaved Paved Paved =1.25 0.00 0.00 1.65 + 0.00 + 0.00 = 0.79 0.00 0.00 = 3.14 0.00 0.00 = 1.00 0.00 0.00 = 0.011 0.015 0.015 =5.35 0.00 0.00 Flow length (ft) ({0))1575.0 0.0 0.0 Travel Time (min) = 4.91 + 0.00 + 0.00 Total Travel Time, Tc.............................................................................. Totals = 24.08 30.63 min TR55 Tc Worksheet Hyd. No. 14 PRPDA-2B Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sqft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrographs Extension for AutoCADO Civil 31D® 2015 by Autodesk, Inc. v10.4 A B C = 0.240 0.011 0.011 = 100.0 0.0 0.0 = 2.34 0.00 0.00 = 1.00 0.00 0.00 = 22.02 + 0.00 + 0.00 = 317.00 0.00 0.00 = 3.50 0.00 0.00 = Unpaved Paved Paved =3.02 0.00 0.00 1.75 + 0.00 + 0.00 = 0.79 5.00 0.00 = 3.14 10.00 0.00 = 1.00 0.70 0.00 = 0.011 0.035 0.015 =5.35 2.24 0.00 Flow length (ft) ({0})434.0 709.0 0.0 Travel Time (min) = 1.35 + 5.28 + 0.00 Total Travel Time, Tc.............................................................................. Totals = 22.02 30.40 min TR55 Tc Worksheet Hyd. No. 17 PRPDA-3A Descriation Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sgft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrographs Extension for AutoCAD( Civil 3D® 2015 by Autodesk, Inc. v10.4 A B C = 0.240 0.011 0.011 0.00 = 100.0 0.0 0.0 = 2.34 0.00 0.00 0.00 = 1.00 0.00 0.00 = 0.011 = 22.02 + 0.00 + 0.00 = 43.00 0.00 0.00 1.00 0.00 0.00 = Unpaved Paved Paved =1.61 0.00 0.00 = 0.44 + 0.00 + 0.00 = 0.79 0.00 0.00 = 3.14 0.00 0.00 = 0.50 0.00 0.00 = 0.011 0.015 0.015 =3.78 0.00 0.00 Flow length (ft) ({0))585.0 0.0 0.0 Travel Time (min) = 2.58 + 0.00 + 0.00 Total Travel Time, Tc.............................................................................. Totals = 22.02 25.04 min TR55 Tc Worksheet Hyde No. 26 PRPDA-3F Descriation Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sqft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrographs Extension for AutoCAD® Civil 3DO 2015 by Autodesk, Inc. v10.4 A B C FANNIE = 0.240 0.00 0.011 0.011 = 100.0 0.00 0.0 0.0 = 2.34 0.00 0.00 0.00 = 1.65 0.015 0.00 0.00 = 18.02 + 0.00 + 0.00 = 166.00 0.00 0.00 = 2.70 0.00 0.00 = Paved Paved Paved =3.34 0.00 0.00 = 0.83 + 0.00 + 0.00 = 1.77 0.00 0.00 = 4.71 0.00 0.00 = 1.00 0.00 0.00 = 0.011 0.015 0.015 =7.03 0.00 0.00 Flow length (ft) ({0))52.0 0.0 0.0 Travel Time (min) = 0.12 + 0.00 + 0.00 Total Travel Time, Tc.............................................................................. Totals 18.97 min TR55 Tc Worksheet Hyd. No. 28 PRPDA-3G Descriotion Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sqft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydrallow Hydrographs Extension for AutoCADO Civil 3 D 2015 by Autodesk, Inc. v10.4 A B C = 0.240 0.011 0.011 = 100.0 0.015 0.0 0.0 = 2.34 0.00 0.00 = 2.50 0.00 0.00 = 15.26 + 0.00 + 0.00 = 416.00 = 10.00 = Unpaved =5.10 1.36 = + 0.00 = 0.00 = 0.011 =0.00 0.00 0.00 Paved 0.00 0.00 0.00 0.00 0.00 0.015 0.00 0.00 0.00 Paved 0.00 0.00 0.00 0.00 0.00 0.015 0.00 Flow length (ft) ({0})0.0 0.0 0.0 Travel Time (min) = 0.00 + 0.00 + 0.00 Total Travel Time, Tc.............................................................................. Totals 16.62 min TR55 Tc Worksheet Hyd. No. 35 PRPDA-4 Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sgft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydraflow Hydrographs Extension for AutoCADOO Civil 3130 2015 by Autodesk, Inc. v10.4 A B C = 0.240 0.00 0.011 0.011 = 100.0 = 3.14 0.0 0.0 = 2.34 0.00 0.00 = 1.30 0.00 0.00 0.00 = 19.83 + 0.00 + 0.00 = 330.00 159.00 0.00 1.10 13.20 0.00 = Unpaved Unpaved Paved =1.69 5.86 0.00 3.25 + 0.45 + 0.00 = 0.79 0.00 0.00 = 3.14 0.00 0.00 = 0.50 0.00 0.00 = 0.011 0.015 0.015 =3.78 0.00 0.00 Flow length (ft) ({0})0.0 0.0 0.0 Travel Time (min) = 0.00 + 0.00 + 0.00 Total Travel Time, Tc.............................................................................. Totals 23.53 min TR55 Tc Worksheet Hyd. No. 36 PRPDA-5 Description Sheet Flow Manning's n -value Flow length (ft) Two-year 24 -hr precip. (in) Land slope (%) Travel Time (min) Shallow Concentrated Flow Flow length (ft) Watercourse slope (%) Surface description Average velocity (ft/s) Travel Time (min) Channel Flow X sectional flow area (sgft) Wetted perimeter (ft) Channel slope (%) Manning's n -value Velocity (ft/s) Hydrallow Hydrographs Extension for AutoCAD® Civil 3D® 2015 by Autodesk, Inc. v10.4 A B C = 0.240 0.011 0.011 = 100.0 0.0 0.0 = 2.34 2.34 0.00 = 1.00 0.00 0.00 = 22.02 + 0.00 + 0.00 = 17.00 69.00 0.00 1.00 0.70 0.00 = Paved Unpaved Paved =2.03 1.35 0.00 = 0.14 + 0.85 + 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.00 0.00 0.00 = 0.015 0.015 0.015 =0.00 0.00 0.00 Flow length (ft) (M)0.0 0.0 0.0 Travel Time (min) = 0.00 + 0.00 + 0.00 Total Travel Time, Tc............................................................................. Totals = 22.02 23.01 min mors dr�uo.�nrr 77r�anrrr�u Data & Products :: Extreme Precipitation in a Changing Climate Select Product Extreme Precipitation Tables - HTML t Extreme Precipitation Tables - Text/CSV T Partial Duration Series - by Point T Partial Duration Series - by Station T Distribution curves - Graphical I Distribution curves - Text/TBL T Intensity Frequency Duration Gruphs�� Precipitation Frequency Duration Graphs': GIS Data Files I Regional/State Maps i Select Location l Doub/e-click the map to place a marker, or enter address or/atitude//ongitude. Page I of 1 Select Options T Smoothing t Delivery T I� I I P°Pap v Submit I' http://precip.eas.cornelLedu/page_data.php 8/24/2016 Extreme Precipitation Tables: 42.555aN, 76.24°W Page 1 of 1 Extreme Precipitation Tables Northeast Regional Climate Center Data represents point eslinmles calculated jrmn partial duration series. All precipitation amounts are displayed in inches. Smoothing Yes State New York Location � lhr Longitude 76.240 degrees West Latitude 42.555 degrees North Elevation UnknowtdUnavailable Date/rine Wed, 24 Aug 201616:55:35.0400 Extreme Precipitation Estimates Smin IOmin ISmin 30min 60min1120n1 Lower Confidence Limits 1 s..»n Main 15ndn130j nln n � lhr 2hr 3hr 16hr 12hr 24hr 481u' (day 2day 4day Ida) IOda}'i I 1 lyr 0.28 0.42 0.53 0.69 0.86 1 1.06 lyr 10.75 0.86 0.95 1.2011.43 1.69 1.99 2.24 lyr 1.76 2.16 2.59 3.14 3.60 1 lyr 1 1 2yr 0.32 0.50 0.62 0.82 1.03 1 1.26 2yr 10.89 1.00 1.13 1.4311.70 0.871LO9 2.01 2.34 2.62 2yr 2.08 2.52 2.95 3.54 4.06 1 2yr 1 1 Syr 0.38 0.59 0.74 0.99 1.27 1.57 Syr 11.10 1.40 1.7912.12 2.49 2.88 3.22 Syr 2.55 3.10 3.60 4.24 4.85 Syr 1 10yr 0.43 0.67 0.85 1.15 1.50 1.87 IOyr 1.29 0.68 1.65 2.12 2.52 1.33 2.94 3.38 3.76 IOyr 2.99 3.62 4.19 4.86 5.56 10yr 1 1 25yr 0.50 0.80 1.02 1.41 1.87 2.34 25yr 1.61 0.60 2.05 2.66 3.15 1.34 3.65 4.17 4.63 25yr 3.69 4.45 5.13 5.83 6.65 25yr 1 150yr 0.57 0.92 1.17 1.64 2.21 2.77 50yr 1.90 192 2.43 3.15 3.73 2.0611 4.30 4.88 5.42 50yr 4.32 5.21 5.99 6.69 7.62 50yr IIOOyr 0.65 1.05 1.35 1.91 2.61 3.30 100yr 2.25 1 25) r 2.87 3.75 4.42 0.84 5.08 5.73 6.35 100yr 5.07 6.10 6.99 7.68 8.74 100yr1 1200yr 0.74 1.21 1.57 2.24 3.09 3.91 200yr 267 25yr 1 3.40 4.45 5.23 5.98 6.72 7.44 200yr 5.95 t15 8.16 8.82 10.03 200yr1 1500yr 0.89 1.46 1.90 2.76 3.86 4.91 500yr 3.33 3.11 4.25 5.58 6.54 0.49 7.44 8.30 9.19 500yr 7.35 8.84 10.03 10.58 12.03 500yr1 Lower Confidence Limits 1 s..»n Main 15ndn130j Upper Confidence Limits 1 5ndIII 10min ISmin In 11 pjwfiby nln 6nmin IZOn,in nn'lzm'13n1, rnr112nr1z4h1,14a1n' 24hr 148hr lld:,)lzda) 2unv 4aa) 7duy ludo)( I 1 (y1- 0.2i 039 0.47 1 0.(4 0.78 0.86 lyr O.6810.851098 1.1211.51 2.1712.38 11,6812 08 lyr 114912.00 2.79 2.39 2.93 3.361 lyr 1 1 2yr 0.32 0.49 0.601 0.81 1.00 1.12 2yr 0.871LO9 1.24 2.01 1.53 1.87 2.71 2.2812.56 2.14 2yr 2,02 2.46 2.87 3.45 3971 2yr 1 Syr 0.41 0.63 1 Syr 0.35 0.55 0.68 1 0.93 1.19 1.33 5yr 1.02 1.30 1,46 179 221 2.74 2.70 3.01 Syr 2.39 2.89 3.38 4.02 4.58 1 Syr 1 1 IOyr 0.39 0.60 0.74 1.04 1.34 1.51 10yr 1.16 1A7 1.65 2.00 2.49 3.05 3,39 IOyr 2.70 3.26 3.79 4.48 5.09 110yrI 1.64 192 10)r 142 1.87 2.0611 51 3.12 3.74 411 19)r 3.31 3.95 4.58 515 6.01 10p, 125yr 0.59 090 L12 1.60 2.11 1 25) r 044 0.67 0.84 1,20 1.57 1.79 25yr L36 1.75 194 5.04 2 31 2.89 6.49 3.59 3.98 25yr 3.17 3.82 441 520 5.83 25yr 1 1 50)r 0.70 1.06 1.32 1.90 2.56 3.11 5(1c1* 1 50yr 0.49 0.74 0.92 1.32 1.78 2.03 50yr 1.54 1.99 2.19 7.61 2.57 324 50 i 1 4.05 4.48 50yr 3.58 431 4.95 5.82 6.47 50)r 1100)r 0.54 0.81 1.01 L47 2.01 2.31 100)1, 1.73 2.26 2.49 10.27 2.87 3.63 1200yr 4.57 5.04 100yr 4.04 4.85 5,54 6,51 7.17 IUlivr 1200yr 0.59 0.89 1.13 1.63 2.28 2.63 200)1, 197 2.57 2.82 200)1-1 3.18 4.06 1.15 5.15 5.66 200)1, 4.56 5.44 6.18 7.30 7.95 200yrl 1500)1, 0.79 1.18 1.52 2.21 3.14 3.13 500yr 2.71 3 06 3.34 3.66 4.71 6.01 6.60 500yr 5.32 634 7.15 8.48 9.I I 500yr1 Upper Confidence Limits 1 5ndIII 10min ISmin In 11 pjwfiby GOmin 12llmin 1hr12hr131u'I6hr 121u 24hr 148hr Way 2unv 4d:q 7day IOdayl I 1 lyr 0.301 0.46 0.56 0.76 0.93 LI14 I)1, 0.8011.021LI811.43 L8(I 2.1712.38 lrr 192 2.29 2.79 3.31 3.791 lyr 1 1 2)r 0.34 0.53 0.65 0.88 1.08 1.20 2)r 09311.1711.3211.64 2.01 2.421 2.71 2yr 2.14 2 61 3.05 3 62 4,17 1 2yr 1 1 Syr 0.41 0.63 0.78 L07 1.36 1.56 Syr 1. 1711.52 1.7012.08 256 3.1013.42 Syr 2.74 3.29 3.83 4.48 5.13 Syr 1 10vr OAS 0.74 0.91 127 1.64 192 10)r 142 1.87 2.0611 51 3.12 3.74 411 19)r 3.31 3.95 4.58 515 6.01 10p, 125yr 0.59 090 L12 1.60 2.11 2.53 25)r 1.82 2.47 2.671A 23 4.04 4.81 524 25yr 4.25 5.04 5.81 6.49 7,43 1 50)r 0.70 1.06 1.32 1.90 2.56 3.11 5(1c1* 221 3314 3.24 3.90 4.92 5.84 6.32 50yr 5.17 6.08 6.96 7.61 8.74 50 i 1 [100)1, 0.82 125 156 2.26 3.0_9 3-83 100) r 2.67 3.75 1.94 4]4 5.98 7.09 7.61 lOUcr 627 7.32 8.37 8.94 10.27 1001 11 1200yr 0.97 1.46 _ 1.86 _ 2.69 3.75 4.73 200yr 3.23 4.62 479 5,75 7.30 8.61 9.19 200yr 7.62 8.83 10.07 10.48 12.08 200)1-1 1500)1, 1.15 1.71 2.20 .3.20 4.55 6.25 SOOyr 3.93 6.11 620 7.41 251 11.17 11.79 50Oyr 9.89 11.34 12.91 1296 15,00 900yr1 Northeast Regional Climate Center http//pt•ecip.eas.cornel Ledu/data.php? l 472072134336 8!24/20 ( 6 HYDROCRAPH SUMMARY REPORTS Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD® Civil 3DO 2015 by Autodesk, Inc. v10.4 Hyd. Hydrograph Peak Time Time to Hyd- Inflow Maximum Total Hydrograph No. type flow Interval Peak volume hyd(s) elevation slrge used Description (origin) (cfs) (min) (min) (acft) (ft) (acf ) 1 SCS Runoff 1.937 2 756 0.582 ------ ----- ------ EXDA-1 2 Reservoir 0.000 2 770 0.000 1 1257.24 0.116 EXDA-1 Discharge 3 SCS Runoff 1.812 2 734 0.370 ------ ------ ------ EXDA-2 4 SCS Runoff 0.246 2 746 0.111 ------ ------ ------ EXDA-3 5 SCS Runoff 0-034 2 908 0.027 ------ ------ ------ EXDA-4 6 SCS Runoff 0.049 2 722 0.006 ------ ------ ------ EXDA-5 8 Combine 2.062 2 736 0.514 213, 4, ------ ------ TOTAL EXISTING 5161 10 SCS Runoff 0.000 2 n/a 0.000 ------ ------ ------ PRPDA-1 11 Reservoir 0.000 2 n1a 0.000 10 1257.00 0.000 PRPDA-1 Discharge 12 SCS Runoff 0.000 2 n/a 0.000 ----- ------ ------ PRPDA-2A 13 Reservoir 0.000 2 n/a 0.000 12 1246.00 0.000 PRPDA-2A Discharge 14 SCS Runoff 0.000 2 We 0.000 ------ ------ ------ PRPDA-2B 15 Combine 0.000 2 Na 0.000 12a14 ------ ------ TOTAL PRPDA-2 16 Combine 0.000 2 n1a 0.000 13, 14, ------ ------ TOTAL PRPDA-2 Discharge 17 SCS Runoff 0.000 2 n/a 0.000 ------ ------ ------ PRPDA-3A 18 SCS Runoff 3.102 2 718 0.143 ------ ------ ------ PRPDA-36 19 Reservoir 0.000 2 780 0.000 18 1267.05 0.033 PRPDA-3B Dishcharge 20 SCS Runoff 3.177 2 718 0.147 ------ ------ ------ PRPDA-3C 21 Reservoir 0.000 2 844 0.000 20 1256.96 0.031 PRPDA-3C Discharge 22 SCS Runoff 2.679 2 718 0.123 ------ ------ ------ PRPDA-3D 23 Reservoir 0.000 2 1046 0.000 22 1257.12 0.030 PRPDA-3D Discharge 24 SCS Runoff 3.766 2 718 0.174 ------ ------ ------ PRPDA-3E 25 Reservoir 0.000 2 1128 0.000 24 1257.21 0.046 PRPDA-3E Discharge 26 SCS Runoff 0.274 2 730 0.055 ------ ------ ------ PRPDA-3F 27 Reservoir 0.077 2 822 0.055 26 1251.31 0.011 PRPDA-3F Discharge 28 SCS Runoff 0.000 2 n/a 0.000 ------ ----- ------ PRPDA-3G 29 Combine 8.959 2 718 0.412 17, 18, 20, ------ ------ PRPDA-3A+3B+3C+3D 22, 30 Combine 3.825 2 718 0.229 24, 26, 28, ------ ------ PRPDA-3E+3F+3G 31 Combine 12.78 2 718 0.641 29,30 ------ ------ TOTAL PRPDA-3 32 Combine 0.000 2 780 0.000 17719, 219 ------ ------ 3A+3B+3C+3D Discharge 23, 33 Combine 0.077 2 822 0.055 25, 27, 28, ------ ------ 3E+3F+3G Discharge 34 Combine 0.077 2 822 0.055 32,33 ------ ------ TOTAL PRPDA-3 Discharge 35 SCS Runoff 0.007 2 1440 0.002 ------ ------ ----- PRPDA-4 31591.gpw Return Period: 1 Year Thursday, 09 / 8 / 2016 Hydrog ra p h Summary ReportHvdrannw Hvrlrnnrnnhs Fxtensinn fnr AutnCArM Civil 3D(W 2015 by Autndesk Inc. v10.4 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph a1 type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (acft) (H) (acft) 36 SCS Runoff 0.002 2 1088 0.001 ------ ------ ------ PRPDA-5 38 Combine 12.78 2 718 39 Combine 0.078 2 828 31591.gpw 0.644 10, 15, 31, 35,36v 0.058 10, 15, 34, ------ ------ TOTAL PROPOSED DISCHARGE 35,36v Return Period: 1 Year Thursday, 09 / 8 / 2016 Hydrograph Summary Report Hydraflow Hydrographs Extension for AutoCAD®Civil 3D®2015 by Autodesk, Inc. v10.4 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (acft) (ft) (acft) 1 SCS Runoff 19.29 2 742 2.844 ------ ------ ------ EXDA-1 2 Reservoir 0.000 2 772 0.000 1 1258.42 0.939 EXDA-1 Discharge 3 SCS Runoff 17.24 2 730 1.706 ------ ------ ------ EXDA-2 4 SCS Runoff 8.725 2 724 0.732 ------ ------ ------ EXDA-3 5 SCS Runoff 2.780 2 726 0.291 ----- ------ ------ EXDA-4 6 SCS Runoff 0.540 2 720 0.031 ------ ------ ------ EXDA-5 8 Combine 27.51 2 728 2.760 213, 49 ------ ------ TOTAL EXISTING 516, 10 SCS Runoff 0.843 2 750 0.384 ------ ------ ------ PRPDA-1 11 Reservoir 0.000 2 822 0.000 10 1257.14 0.064 PRPDA-1 Discharge 12 SCS Runoff 0.061 2 1440 0.043 ------ ------ ------ PRPDA-2A 13 Reservoir 0.000 2 1104 0.000 12 1246.17 0.009 PRPDA-2A Discharge 14 SCS Runoff 0.055 2 940 0.045 ------ ------ ------ PRPDA-2B 15 Combine 0.113 2 1100 0.088 12j14 ------ ------ TOTAL PRPDA-2 16 Combine 0.055 2 940 0.045 13j141 ------ ------ TOTAL PRPDA-2 Discharge 17 SCS Runoff 0.012 2 1440 0.008 ------ ----- ------ PRPDA-3A 18 SCS Runoff 7.842 2 716 0.364 ------ ------ ------ PRPDA-3B 19 Reservoir 0.000 2 952 0.000 18 1258.44 0.134 PRPDA-36 Dishcharge 20 SCS Runoff 8.532 2 716 0.395 ------ ------ ------ PRPDA-3C 21 Reservoir 0.000 2 952 0.000 20 1258.34 0.143 PRPDA-3C Discharge 22 SCS Runoff 6.409 2 716 0.299 ------ ------ ------ PRPDA-3D 23 Reservoir 0.000 2 1022 0.000 22 1258.47 0.111 PRPDA-3D Discharge 24 SCS Runoff 8.559 2 716 0.402 ------ ----- ------ PRPDA3E 25 Reservoir 0.000 2 1108 0.000 24 1258.59 0.151 PRPDA-3E Discharge 26 SCS Runoff 3.171 2 726 0.267 ------ ------ ----- PRPDA-3F 27 Reservoir 0.399 2 790 0.267 26 1252.94 0.097 PRPDA-3F Discharge 28 SCS Runoff 0.016 2 1440 0.009 ------ ------ ------ PRPDA-3G 29 Combine 22.78 2 716 1.066 171 18120r ------ ------ PRPDA-3A+3B+3C+3D 22, 30 Combine 10.24 2 718 0.678 24, 26, 28, ------ ------ PRPDA-3E+3F+3G 31 Combine 32.88 2 718 1.745 29,30 ------ ------ TOTAL PRPDA-3 32 Combine 0.012 2 1440 0.008 17, 19, 21, ------ ------ 3A+3B+3C+3D Discharge 23, 33 Combine 0.399 2 790 0.276 253 27, 28, ------ ------ 3E+3F+3G Discharge 34 Combine 0.399 2 790 0.284 32,33 ------ ------ TOTAL PRPDA-3 Discharge 35 �'� SCS Runoff 0.703 2 742 0.199 ------ ------ ------ PRPDA-4 � l 31591.gpw Return Period: 10 Year Thursday, 09 / 8 / 2016 I Hydrograph Summary Report Hydfaflow Hydrographs Extension for AutoCAD®Civil 31302015 by Autodesk, Inc. v10.4 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph .. type flow interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (acft) (ft) tacit) 36 SCS Runoff 0.124 2 732 0.020 ------ ------ ------ PRPDA-5 38 Combine 32.99 2 718 2.436 10, 15, 31, 35, 36, 39 Combine 1-973 2 746 0.976 103 15, 34, 35, 36, 31591.gpw Return Period: 10 Year ------ TOTAL PROPOSED ------ TOTAL PROPOSED DISCHARGE Thursday, 09 / 8 / 2016 Hydrograph Summary Report Inc. v10.4 HvdraBow Hvdroeraphs Extension for AutoCAD®Civil 3D02015 by Autodesk, Hyd, Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph No. type flow interval Peak volume hyd(s) elevation strge used 10 Description 23.02 (origin) (cls) (min) (min) (acft) ------ (ft) (acft) Reservoir 0.000 2 840 0.000 10 1258.41 1 SCS Runoff 70.48 2 740 8.664 ------ ----- ------ EXDA-1 ------ 2 Reservoir 0.000 2 742 0.000 1 1259.87 3.69 EXDA-1 Discharge 3 SCS Runoff 58.67 2 730 5.071 ------ ------ ----- EXDA-2 15 4 SCS Runoff 37.22 2 724 2.493 ------ ------ ------ EXDA-3 Combine 5 SCS Runoff 16.48 2 724 1.138 ------ ----- ------ EXDA-4 0.860 6 SCS Runoff 1.776 2 720 0.093 ------ ------ ------ EXDA-5 2 8 Combine 107.54 2 726 8.794 2, 3, 4, 5, 6, 10 SCS Runoff 23.02 2 730 2.522 ------ ------ ------ PRPDA-1 11 Reservoir 0.000 2 840 0.000 10 1258.41 0.780 PRPDA-1 Discharge 12 SCS Runoff 3.852 2 742 0.855 ------ ------ ------ PRPDA-2A 13 Reservoir 0.369 2 844 0.039 12 1249.02 0.259 PRPDA-2A Discharge 14 SCS Runoff 2.993 2 738 0.558 ------ ------ ------ PRPDA-2B 15 Combine 6,826 2 740 1.413 12, 14 ----- ------ TOTAL PRPDA-2 16 Combine 2.993 2 738 0.598 131 14, ----- ------ TOTAL PRPDA-2 Discharge 17 SCS Runoff 0.860 2 734 0.162 --- ------ ------ PRPDA-3A 18 SCS Runoff 16.72 2 716 0.795 ------ ------ ------ PRPDA-3B 19 Reservoir 0.000 2 672 0.000 18 1261.90 0.369 PRPDA-3B Dishcharge 20 SCS Runoff 18.92 2 716 6.893 ------ ----- ------ PRPDA-3C 21 Reservoir 0.000 2 608 0.000 20 1261.92 0.416 PRPDA-3C Discharge 22 SCS Runoff 13.16 2 716 0.633 ------ ------ ------ PRPDA-3D 23 Reservoir 0.000 2 656 0.000 22 1261.70 0.290 PRPDA-3D Discharge 24 SCS Runoff 16.96 2 716 0.825 -.---- ------ ------ PRPDA-3E 25 Reservoir 0.000 2 588 0.000 24 1261.78 0.377 PRPDA-3E Discharge 26 SCS Runoff 11.06 2 726 0.815 ------ ------ ------ PRPDA-3F 27 Reservoir 8.577 2 732 0.814 26 1254.24 0.234 PRPDA-3F Discharge 28 SCS Runoff 1.599 2 726 0.251 ------ ------ ------ PRPDA-3G 29 Combine 48.89 2 716 2.483 17, 18, 20, ------ ------ PRPDA-3A+3B+3C+3D 22, 30 Combine 24.93 2 718 1.891 24, 26, 28, ------ _---- PRPDA-3E+3F+3G 31 Combine 72.66 2 718 4.373 29t30 ------ ------ TOTAL PRPDA-3 32 Combine 0.860 2 734 0.162 17, 19, 21, ------ ----- 3A+3B+3C+3D Discharge 23, 33 Combine 10.00 2 732 1.065 251 27, 28, ------ ------ 3E+3F+3G Discharge 34 Combine 10.85 2 732 1.228 32,33 ------ ----- TOTAL PRPDA-3 Discharge 35 SCS Runoff 9.956 2 730 1.052 ------ ----- PRPDA-4 31591.gpw Return Period: 100 Year Thursday, 09 1 8 12016 Hydrograph Summary Report HydraBow Hydrographs Extension for AutoCAD® Civil 31382015 by Autodesk, Inc. 00.4 Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph 11 typo flow Interval Peak volume hyd(s) elevation strge used Description (origin) (cfs) (min) (min) (acft) (ft) (acft) 36 SCS Runoff 0.951 2 728 0.085 ------ ------ ------ PRPDA-5 38 Combine 87.43 2 718 9.446 10, 15, 31, ------ ------ TOTAL PROPOSED 35, 36, ------ TOTAL PROPOSED DISCHARGE 39 Combine 49.75 2 732 6.300 10, 15j341 ------ 35,367 31591.gpw � Return Period: 100 Year Thursday, 0918!2016 d?IY'I�Wl1S nX�l/�aM WQv/RRv Summary WQv=(PXRvxA)/12 where: WQv = Water Quality Volume (acre feet) P = 90% rainfall event number, from NYSSMDM Figure 4.1, P=1.0 Rv = Impervious coefficient, based on % impervious cover (1) Rv = 0.05 + 0.009 x (1) A = Drainage Area in acres, based on impervious footprint :Water Quality Treatment Volume (WQv) Total WQv/RRv Required ( 1.182 �hoffReduction Volume Provided by GI Techniques RRv Required RRv Provided Max RRv GI Practice (acft) (acft) Allowable (acft) Infiltration Basin #1 0.143 2.544 0.143 Infiltration Basin #2A 0.067 0.256 0.067 Bioretention Area #36 0.156 0.160 0.156 Bioretention Area #3C 0.177 0.183 0.177 Bioretention Area #31) 0.123 0.123 0.123 Bioretention Area #3E 0.159 0.161 0.159 Infiltration Basin #3F 0.159 0.201 0.159 Bioretention Area #4.1 0.028 0.029 0.028 Bioretention Area #4.2 0.041 0.043 0.041 Grass Filter Strip - DA -4 0.113 0.113 0.113 Grass Filter Strip - DA -5 0.016 0.016 0.016 Total WQv/RRv Provided 1 1.182 �ac-ft Rv A WQv Drainage Area P (%) (ac) (acft) 1 1.00 100 1.81 0.143 2A 1.00 100 0.85 0.067 3B 1.00 100 1.97 0.156 3C 1.00 100 2.24 0.177 3D 1.00 100 1.55 0.123 3E 1.00 100 2.01 0.159 3F 1.00 100 2.01 0.159 4 1.00 100 2.29 0.181 5 1.00 100 0.20 0.016 Total WQv/RRv Required ( 1.182 �hoffReduction Volume Provided by GI Techniques RRv Required RRv Provided Max RRv GI Practice (acft) (acft) Allowable (acft) Infiltration Basin #1 0.143 2.544 0.143 Infiltration Basin #2A 0.067 0.256 0.067 Bioretention Area #36 0.156 0.160 0.156 Bioretention Area #3C 0.177 0.183 0.177 Bioretention Area #31) 0.123 0.123 0.123 Bioretention Area #3E 0.159 0.161 0.159 Infiltration Basin #3F 0.159 0.201 0.159 Bioretention Area #4.1 0.028 0.029 0.028 Bioretention Area #4.2 0.041 0.043 0.041 Grass Filter Strip - DA -4 0.113 0.113 0.113 Grass Filter Strip - DA -5 0.016 0.016 0.016 Total WQv/RRv Provided 1 1.182 �ac-ft SNOLL 6'7l1,?76'O JNIZIS NOI.LN.�.L�?IOIg Bioretention Worksheet DA -3B Af = WQv x (df)/(k x (hf + dfj(tfjj where: Af = the required surface area (square feet) WQv = water quality volume (cubic feet) of = depth of soil medium (feet) k = the hydraulic conductivity (ft/day), usually set at 4 ft/day when soil is loosely placed in the planter, but can be varied depending on the propoerties of the soil media. Some other reported conductivity values are: Sand: 3.5 ft/day (Claytor and Schueler, 1996) Peat: 2.0 ft/day (Galli 1990) Leaf Compost: 8.7 ft/day (Claytor and Schueler, 1996) Bioretention Soil: 0.5 ft/day (Claytor and Schueler, 1996) if= average height of water above the planter bed tf = the design time to filter the treatment volume through the filter media (Step 1 -Determine WQv for Drainage to Bio R DB' `I" _ value units Enter Design Storm PI 1.01 in Enter Impervious Area 11 85,9231sq-ft Enter Area Al 85,9231sq-ft Percent Impervious Area %I1 100%j Runoff Volume Rvl 0.95 WQv WQVI 6,8021cu-ft = I 0.156jac-ft �'tep 2 - Calculate Minimum Filter Area value units Enter WQv WQvj 6,802[cu-ft Enter depth of soil media dfj 2.51ft Enter hydraulic conductivity kj 0.5Ift/day Enter average height of ponding hfj 0.5 ft Enter filter time to 1.671days Required Area of Filter Aft 6,789[sq-ft p�Hp 3- DatRrmine Actua�.9lortttenton Area Measured Filter Area I 6,952�sq-ft Maximum Treatment Volume 6,966�cu-ft Bioretention Worksheet DA -3C Af = WQvx (df) /(k x (hf + df)(rill where: Af = the required surface area (square feet) WQv = water quality volume (cubic feet) df = depth of soil medium (feet) k = the hydraulic conductivity (ft/day), usually set at 4 ft/day when soil is loosely placed in the planter, but can be varied depending on the propoertles of the soil media. Some other reported conductivity values are: Sand: 3.5 ft/day (Claytor and Schueler,1996) Peat: 2.0 ft/day (Galli 1990) Leaf Compost: 8.7 ft/day (Claytor and Schueler,1996) Bioretention Soil: 0.5 ft/day (Claytor and Schueler, 1996) hf = average height of water above the planter bed tf = the design time to filter the treatment volume through the filter media Step 1 - Deteriiil're U7gv for Draina`g�Y o value units Enter Design Storm P1 1.01 0.177�ac-ft ktp 3 -Deter fi Na)n@141'etention (AI'en in Enter Impervious Area I I 97,6321sq-ft Enter Area Al 97,6321sq-ft Percent Impervious Area %I1 100%1 Runoff Volume Rvi 0.951 WQv WQVI 7,7291cu-ft = value units Enter WQv WQv 717291cu-ft Enter depth of soil media df 2.51ft Enter hydraulic conductivity k 0.51ft/day Enter average height of ponding hf 0.51ft Enter filter time tf 1.671days Required Area of Filter Af 7,7141sq-ft . Measured Filter Area I 719751 sq-ft Maximum Treatment Volume � 7,991�cu-ft = ` 0.183�ac-ft Bioretention Worksheet DA -3D Af=WQvxIUD/ (kx(hf+UJIMP where: Af = the required surface area (square feet) WQv = water quality volume (cubic feet) df = depth of soil medium (feet) k = the hydraulic conductivity (ft/day), usually set at 4 ft/day when soil is loosely placed in the planter, but can be varied depending on the propoerties of the soil media. Some other reported conductivity values are: Sand: 3.5 ft/day (Claytor and Schueler, 1996) Peat: 2.0 ft/day (Gail! 1990) Leaf Compost: 8.7 ft/day (Claytor and Schueler, 1996) Bioretention Soil: 0.5 ft/day (Claytor and Schueler, 1996) if = average height of water above the planter bed tf = the design time to filter the treatment volume through the filter media Step 1 -Determine WQv for Drainage to Bioretention Area value units Enter Design Storm P 1.01in Enter Impervious Area I 67,6711sq-ft Enter Area A 67,6711sq-ft Percent Impervious Area %I1 100%I Runoff Volume Rvj 0.95 WQv WQVI 513571cu-ft = ` 0,1231ac-ft Ftep 2 - Calculate Minimum Filter Area value units Enter WQv WQVI 51357cu-ft Enter depth of soil media dfl 2.5 ft Enter hydraulic conductivity kJ 0.5 ft/day Enter average height of ponding hfl 0.51ft Enter filter time tf 1.671days Required Area of Filter Af 5,3471sq-ft Measured Filter Area I 513571sq-ft Maximum Treatment Volume ` 513681cu-ft = I 0.1231ac-ft Bioretention Worksheet DA -3E Af = WQvx (UJ)//(kx (hf+dfJItf)) where: Af = the required surface area (square feet) WQv = water quality volume (cubic feet) df = depth of soil medium (feet) k = the hydraulic conductivity (ft/day), usually set at 4 ft/day when soil is loosely placed in the planter, but can be varied depending on the propoerties of the soil media. Some other reported conductivity values are: Sand: 3.5 ft/day (Claytor and Schueler, 1996) Peat: 2.0 ft/day (Galli 1990) Leaf Compost: 8.7 ft/day (Claytor and Schueler, 1996) Bioretention Soil: 0.5 ft/day (Claytor and Schueler, 1996) if = average height of water above the planter bed tf = the design time to filter the treatment volume through the filter media ep - etermine v or l�'rainage to ore eriEfdri Via' . value units Enter Design Storm PI 1.01 in Enter Impervious Area 11 87,6061sq-ft Enter Area Al 87,606]sq-ft Percent Impervious Area %I 100%1 Runoff Volume Rvi 0.95 WQv WQVI 6,935 cu -ft = ` 0.159jac-ft �tep2-Calculate Minimum Filter Area y value units Enter WQv cu -ft Enter depth of soil media df 2.51ft Enter hydraulic conductivity k 0.51ft/day Enter average height of ponding hf 0.51ft Enter filter time tf1.671days Required Area of Filter Afj 609221sq-ft Measured Filter Area I 7,0001sq-ft Maximum Treatment Volume � 7,014�cu-ft = I 0.161�ac-ft Bioretention Worksheet DA -4.1 Af=WQvxIUjJ/(kx(hf+U11111JJ where: Af = the required surface area (square feet) WQv = water quality volume (cubic feet) of = depth of soil medium (feet) k = the hydraulic conductivity (ft/day), usually set at 4 ft/day when soil is loosely placed in the planter, but can be varied depending on the propoerties of the soil media. Some other reported conductivity values are: Sand: 3.5 ft/day (Claytor and Schueler, 1996) Peat: 2.0 ft/day (Galli 1990) Leaf Compost: 8.7 ft/day (Claytor and Schueler, 1996) Bioretention Soil: 0.5 ft/day (Claytor and Schueler, 1996) if = average height of water above the planter bed if= the design time to filter the treatment volume through the filter media ..Step 1 - Dete IYilne " D orro In e ` 'ire ent on Brea value units Enter Design Storm PI 1.01in Enter Impervious Area I115,1431sq-ft Enter Area Al 15,1431sq-ft Percent Impervious Area %1 100%] Runoff Volume Rvi 0.95 WQv WQVI 111991cu-ft I 0.028jac-ft —[alculate Minimum Filter Area Enter WQv Enter depth of soil media Enter hydraulic conductivity Enter average height of ponding Enter filter time Required Area of Filter �Stgp 3 _ Datarm1na�Acttl�I;-�ora�t};��1AFta� .. Measured Filter Area Maximum Treatment Volume 11259 1 sq -ft 0.029�ac-ft value units WQv 1,1991cu-ft cfj 2.51ft kj 0,51ft/day hfj 0.51ft tf 1.671days At 1,1961sq-ft �Stgp 3 _ Datarm1na�Acttl�I;-�ora�t};��1AFta� .. Measured Filter Area Maximum Treatment Volume 11259 1 sq -ft 0.029�ac-ft Bioretention Worksheet DA -4.2 Af = WQv x (df) /(k x (hf + dfJ(tf)] where: Af = the required surface area (square feet) WQv= water quality volume (cubic feet) of = depth of soil medium (feet) k = the hydraulic conductivity (ft/day), usually set at 4 ft/day when soil is loosely placed in the planter, but can be varied depending on the propoerties of the soil media. Some other reported conductivity values are: Sand: 3.5 f[/day (Claytor and Schueler, 19961 Peat: 2.0 ft/day (Galli 1990) Leaf Compost: 8.7 ft/day (Claytor and Schueler, 1996) Bioretention Soil: 0.5 ft/day (Claytor and Schueler, 1996) hf = average height of water above the planter bed tf = the design time to filter the treatment volume through the filter media lkep 1 - Determine WQv for Drainage to eloretentlon Area value units Enter Design Storm P1 1.Olin Enter Impervious Area I Enter Area A Percent impervious Area %I Runoff Volume Rv WQv WQV` �iep 2 -Calculate Minimum Filter Arg4� Enter WQv WQvI Enter depth of soil media dfl Enter hydraulic conductivity kj Enter average height of ponding hfl Enter filter time to Required Area of Filter Afl 22,303 sq -ft 22,303 sq -ft 100% 0,951 1,7661cu-ft = l 0.041jac-ft value units 1,7661 cu-ft 2.51ft 0.5 1ft/day 0.5 1 ft 1.671days 1,7621sq-ft Measured Filter Area Maximum Treatment Volume 1,8551sq-ft 1,859�cu-ft = � 0.043�ac-ft STORMTECH CHAMBER INFORMATION StormTech• Detention' Retention' Water Quality StormTech MC -3500 Chamber Designed to meet the most stringent industry '`�/f�r� performance standards for superior struc- tural integrity while providing designers with a cost-effective method to save valuable land and protect water resources. The StormTech system is designed primarily to be used under parking lots thus maximiz- Ing land usage for commercial �U and municipal applications. StormTech MC -3500 Chamber (not to scale) MC 3500 End Nominal Chamber Specifications Size (LxW xIT) 90'(2286 mm) x77"(1956 mm) x 45'(1143 mm) Chamber Storage 109.91P (3.11 m') Min. Installed Storage` 178.9 W (5.06 m') Weight 1341bs (60.8 kg) ' This assumes a minimum of 12• (305 mm) of stone above, 9'(229 mm) of stone below chambers, 9' (229 mm) of row spacing, and 40% stone porosity. P Shi In Cf"1 WiV� n.I , 1�1 P 9 15 chamberslpallet 7 end caps/pallet buck 7 paII& - 90.0 (2186 mm) 66.0' (2164 all INSTALLED III 1' 11 ,illi 1fl 11 11 A Iltilll I11I 111)1', StormTech - Cap (not to scale) Nominal End Cap Specifications Size(LxWxH) 25.7'(653 mm) x 75'(1905 mm) x 45'(1143 mm) End Cap Storage 14.9 ft' (0.42 Of Mtn. Installed Storage' 46.0 it' (1.30 m1) WeiOhl 49 les (22.2 kg) is assumes a minimum of 12' (305mm) of stone above, 9' (229 mm) of stone below, 9' (229 mm) row spacing, 6' If 52 mm) of stone pencil and 40% stone porosity. zz.z• I (b64 mm)' (110.1 mm) (1163 mm) ]].0'(1905 mr„ (653mm) ' Storage Volume Per Chamber/End Cap ft3 (m3) NOTE Assumes poroany for the stone plus the chamber/end rap volume. End Cap volume assumes 6" (152mm) stone perimeter. Yalume at Excavation Per ChamberfEnd Cap in yd° (m3) NOTE: Assumes 9'(229 mm) 01 separation between chamber rows, 641152 Bare Chamber/End Cap and Stone 9 (229) Unit Volume -Stone Foundation MC -3500 Storage Depth in. (mm) 13.8 (10.5) US (nh) 9 (229) 12 1B(457) MC -3500 Chamber 109.9 (3.11)178.9 (5. g6)184.)194.3(5MC-3500 8220 (4.9) 8831(5.3) M 10054 (6.0) End Cap 14.9 (0.42) 46.0 (1.33) 47.7 51.1(1.45) NOTE Assumes poroany for the stone plus the chamber/end rap volume. End Cap volume assumes 6" (152mm) stone perimeter. Yalume at Excavation Per ChamberfEnd Cap in yd° (m3) NOTE: Assumes 9'(229 mm) 01 separation between chamber rows, 641152 Slone Foundation Depth in. (mm) 9 in. 12 in. 9 (229) 12 (305) 15 (381) 18 (457) MC -3500 12.4 (9.5) 12.8 (9.8) 13.3 (10.2) 13.8 (10.5) End Cap 4.1 (3.1) 4.2 (3.2) 4.4 (3.3) 4.5 (3.5) mm) of perimeter in front of end caps, and 24"(610 mm) o1 cover. The volume of excavation will vary as depth of comrincreases. General Cross Section CHAMBERS SHALL IAEET ASTM F 2118'STANOARO SPECIFICATION FOR POLYPROPYLENE (PPI CORRUGATED MCJSb CHPMBER NOMINAL S'd-2INCH 119 mm -51 mmJ CLEAN, CRUSHED, SJZE LS O) (MSHTO Mia R3 8 CJ STW E SIZES ALLOVffO) NW WOVEN GEOTEME ALL fi' MIN. P5z mml AROUND ANGIAM STONE Amount of Stone Per Chamber ENGLISH Eons (yds) NOTE Assumes Igo Stone Foundation Depth 9 in. 12 in. 15 in. 18 in. MC -3500 9.1(6:4) 9.7 (6.9) 10.4 (7.3) 11.1(7.8) End Cap 4.1(2.9) 4.3 (3.0) 4.5 (3.2) 4.7 (3.3) METRIC k9 (0) 229 mm 305 mm 381 mm 457 mm MC -3500 8220 (4.9) 8831(5.3) 9443 (5.6) 10054 (6.0) End Cap 3699 (2.2) 3900 (2.3) 4100 (2.4) 4301(2.6) (305mm) olstoRea bove, and 9'(229mmJ rowspacing, and 6" (152mm) of perimeterstone in front of end raps. CHAM1IBERS SHALL CONFORl.1 TO THE REW IREM1IENTS OE ASTM F OF TILT MOO PRACTICE FOR STRUCTURAL DESIGN A THERMOECTIO CCORRUGATED WALL -STORAIYIATER COLLECTION CHAMBERS' M1UTERIALS / Q.Y.W. fYMtlV. I 1305 mmj 2J'[610 mm180'I�imJ 77 M(N' AU A / 45p I2 mn,l J J8't2nrnmIMft. JIM MMI -fY105 mm(MIN SUeGRAOE SOILS NOTES: 1. THIS CROSS SECTION PROVIDES GENERAL INFORMATION FOR THE MC3S00 CHAMBER. STORMTECH MC -3500 CHAMBERS MUST BE DESIGNED AND INSTALLED IN ACCORDANCE WITH THE MC3500 DESIGN MANUAL AND MC -3500 CONSTRUCTION GUIDE. 2. PROPERLY INSTALLED MC3500 CHAMBERS PROVIDE THE LOAD FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS FOR EARTH AND LIVE LOADS WITH CONSIDERATION FOR IMPACTAND MULTIPLE PRESENCES, 3. PERIMETER STONE MUSTALWAYS BE BROUGHT UP EVENLY WITH BACKFILL OF BED. PERIMETER STONE MUST EXTEND HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH STRAIGHT OR SLOPED SIDEWALLS. StormTechs Detention, Releneen• wdfer oudldy A division of WPM 701nwoodRDad3Suite3 RockyHill Connecticut 106067 MO.529.8188 1 888.892.26941 fax866.328.8401 I faxB60-529-80401 www.stofmtech.com ADS "Terms and Conditions of Sale" are available on the ADS website, www.ads-pipe.com. Advanced Drainage Systems, the ADS logo, and the green stripe are registered trademarks of Advanced Drainage Systems. I StormTechO is a registered trademark of StormTech, Inc The Green Building Council Member logo is a registered trademark of the U.S. Green Building Council. 5150909 03/2014 Printed on recycled paper g�P © 2014 Advanced Drainage Systems, Inc. StormTech Construction Guide REQUIRED MATERIALS AND EQUIPMENT LIST ' • Acceptable fill materials per Table 1 • Woven and non -woven geotextiles IMPORTANT NOTES: �eten[ion-Retention-water Oualiry division of MW �uutr� StormTech solid end caps and pre -cored end caps StormTech chambers StormTech manifolds and fittings A. This installation guide provides the minimum requirements for proper installation of chambers. Non -adherence to this guide may result in damage to chambers during installation. Replacement of damaged chambers during or after backfilling is costly and very time consuming. It is recommended that all installers are familiar with this guide, and that the contractor inspects the chambers for distortion, damage and joint integrity as work progresses. B. Use of a dozer to push embedment stone between the rows of chambers may cause damage to chambers and is not an acceptable backfill method. Any chambers damaged by using the "dump and push" method are not covered under the StormTech standard warranty. C. Care should be taken in the handling of chambers and end caps. Avoid dropping, prying or excessive force on chambers during removal from pallet and initial placement. requirements for system Installation Excavate bed and prepare subgrade per - engineer's plans. Place non -woven geoteMile over prepared soils and up excavation walls. Place clean, crushed, angular stone foundation 6" (150 mm) min. Install underdrains if required. Compact to achieve a flat surface. Call StormTech at 888.892.2694 for technical and product information or visit wwwstormtech.com � Manifold, Scour Fabric and Chamber Assembly Install manifolds and lay out woven scour geotextile at inlet rows [min. 12.5 ft (3.8 m)] at each inlet end cap. Place a continuous piece (no seams, double layer) along entire length of solator® Row(s). Align the first chamber and end cap of each row with inlet pipes. Contractor may choose to postpone stone placement around end chambers and leave ends of rows open for easy inspection of chambers during the backfill process. Construct the chamber bed by overlapping the chambers lengthwise in rows. Attach chambers by overlapping the end corrugation of one chamber on to the end corrugation of the last chamber in the row, Be sure that the chamber placement does not exceed the reach of the construction equipment used to place the stone. Attaching the Ery' Caps Prefabricated End Caps Isolator Row Lift the end of the chamber a few inches off the ground. With the curved face of the end cap facing outward, place the end cap into the chamber's end corrugation. 24" (600 mm) inlets are the maximum size that can fit into a SC-740/DC-760 end cap and must be prefabri- cated with a 24" (600 mm) pipe stub. SC -310 cham- bers with a 12" (300 mm) inlet pipe must use a prefabricated end cap with a 12" (300 mm) pipe stub. Drape a strip of ADS non -woven geotextile over the row of chambers (not required over DC -780). This is the same type of non -woven geotextile used as a separation layer around the angular stone of the 2 StormTech system. Backfill of Chambers - Embedment Stone and Cover Stone Continue evenly backfilling between rows and around perimeter until embedment stone reaches tops of chambers. Perimeter stone must extend horizontally to the excavation wall for both straight or sloped sidewalls. Only after chambers have been backfilled to top of chamber and with a minimum G' (150 mm) of cover stone on top of chambers can small dozers be used over the chambers for backfilling remaining cover stone. Final Backfill of Chambers -Fill Material Install non -woven geotextile over stone. Geotextile must overlap 24" (600 mm) min. where edges meet. Compact each lift of backfill as specified in the site design engineer's drawings. Roller travel parallel with rows. Small dozers and skid loaders may be used to finish grading stone backfill in accordance with ground pressure limits in Table 2. They must push material parallel to rows only. Never push perpendicular to rows. StormTech recom- mends that the contractor inspect chambers before placing final backfill. Any chambers damaged by construction shall be removed & replaced. StormTech Isolator Row Detail COVEREMIRE ISOLATOR ROW WffH ADS GEOSYMHETILS 601T NONWOVEN WD ES TRIP SC -]a0 -S (2.1 m) MIN WIDE STRIP SC310 6'(1.Sm)MIN WIDE STRIP CATCH BASIN OR MANN OlE SUMP DE BY SMEDESIGN ENGINEER NOTE: NON -WOVEN GEOTEMILE OVER DG]BO ISOLATOR ROW CHAMBERS IS NOT REpUIRED. CHAMBER (SG]40 SHOWN) TWOLAYERSOF E GEOSYNTIIONS`T15A'1%WOVEN GEOTEMiL 7511- EENFOUINWIIONSTONEANO CRM'®ERS SG10S (1.2m-6'(1Sm)MINWIDE STRIPS SC310-a' (1.2 m) MIN WIDE STRIPS SG -740 & DC -]60-2a• (600 mm) HOPE ACCESS PIPE SC 10-12-(300mm) HDPEACCESS PIPE USE FACTORY PRE -FABRICATED END CAP Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 4 Table 1 —Acceptable Fill Materials QD Final FII: Fill Material for layer D' Any sail/rock materials, native N/A starts from the top of lhe'C'layerto the soils or perengineer's plans. bottom of flexible pavement or unpaved Check plans for pavement finished gradeabove. Note that the pave- subgrade requirements. mail subbase may be pad of the'D' layer. Prepare per site design engineer's plans. Paved installations may have stringent material and preparation requirements. © Initial Fill: Fill Material for layer Granular we] l -graded soil/aggregate AASHTC M45 Begin compaction after min, 12'(300mm)ofmterial 'C'starts from the top of the embedment mixtures, <35% fines or processed I A -1,A -2-4,A-3 over the chambers is reached. Compact additional stone ('B' layer) to 18'(450 mm) above aggregate. Most pavement subbase or layers in 6°(150 mm) max. lifts to a min. 95% Proctor the top of the chamber. Note that materials can be used in lieu of this AASHT0 M431 density forwell-graded material and 95% relative pavement subbase may be part of the layer 3,357,41467,5156057,61 dere for processed aggregate materials. Bailer 'C' layer 67, 6Q 7J$ 8,89, 9,10 gross vehicle weight not to exceed 12,000 Its (53I N). Dynamic force not to exceed 201000 Its (89 kN) © Embedment Stone: Embed- Cli crushed, angular stone Al M431 No compaction required. ment Stone surrounding chambers from nominal size distribution 3/4-2" 30357,4,4615155,57 the foundation stone to thec'Iayer above. (20 man -50 mm) CAS Foundation Stone: Foundation Clean, crushed, angular stone, AASHT0 M431 Placeand compact in 6'(150 mm)litts using two full gone below the chambers from the sub- nominal size distribution 3/4-2" 3,357,41467,5156,57 coverages with a vibratory compactor?° grade up to the foot(bodam) of the chamber. (20 mm -50 mm) PLEASE NOTE: 1. The listed AASHTO designations are for gradations only. The stone must also be clean, crushed, angular. For example. a specification for k4 stone would state: "clean, crushed. angular no. 4 (AASHTO M43) stone ". 1. Storm Tech compaction requirements are met for 'A' location materials when placed and compacted in 6"/150 mm) (max) (ifs using two lull coverages with a vibratory compactor. 3. Where infiltration surfaces may be comprised by compaction, for standard installations and standard design load conditions, a flat surface may be achieved by raking or dragging without compaction equipment. For special load designs, contact StormTeclr for compaction requirements. Figure 2 —Fill Material Locations ADS GEOSYNTNETICS BO1T NpN-WOVEN GEOTE%TILEALL Figure 1— Inspection Port Detail PAVEMENT y I 0• (200 mm) MIN THICKNESS FlD[PARM1 CATCHIT PANYRX (IFSPE SPECIFIED] oP GPECIPIED7 t0• (250 mm) (ENTERED ON O RBE UCENTEREDON coRRurwnoN CREST iC (0.50 mn)MIN WIDTH CONCRETE COLLAR 12' (300 mm)NYLOPLAST INUNE OMIN 60DV WSOLID HINGED COVEROR GRATE PARTM 2I12AG10N SOUD COVER 1299cGC GRATE 129Sol 10' (250 mm) ADS N-12 HDPE PIPE CW1r49ER(SO740 SHOWN) PAVEMEM' LAYER ryESiGNED BYSRE DESIGN ENGWEER) PERIMEIFR STONE ; ; :. ��, ,iC /\/`/\1.._ .. xcw�itymmyoarq 10• SC31085G74D-8'(24 m)MA% � �. ;� � \\ixnw+n - I (450 mm)MIN• OG'r00-t2 (99m)MAI + X4`51 -'was ,nom 'M -.w 0•(150 ml MIN DY ;, EXCAVATION WALL ➢'r&dxvv-yY O CAN BE SLOPED OR VERTLAL) 2„ e SG74080G7aD•30'(T00 mmJ :� 11111 7.'. 50310.18'1400 mmf — 1111�I..1 1 I Once layer cr Is placed Ol any solgmatedal can w u 'Jr) U JI y III 1 L DEPTHOFSTONETOaEDETERMNED be placed in layer TY / II J ni_i_ ➢ IT�I➢ /-g OY 1 } `© pl h MLI,'. 1 J:11 aV SITE DESIGN ENGINEER Ilii 1- elllm➢ Ifl�t—_�gl Jfl Ill.l� ��f� ,._ I➢,l ._, _I_.- up to me finished SO740&SC310 0-(i50mm)MW grade. Most pavement 12•(30Omm)MIN� END GAP DIC780-9.1200mm)MIN subbase Dolls can be SUSGRADE SOILS used to replace the materials requirements (150m) MIN 12(300 mm)TYP of layer'C'Or'O' at the design anginal SG7408 DG780-51' (1205 mm) discretion. SC310-x' (ees mm) Call SrormTech at 8118.89226 94 for technical and product information or visit vvww.stormtech.com NOTES: 1. 36" (900 mm) of stabilized cover matenals over the chambers is required for full dump truck travel and dumping. 2. During paving operations, dump truck axle loads on 18" (450 mm) of cover may be necessary. Precautions should be taken to avoid rutting of the road base layer. to ensure that compaction requirements have been met, and that a minimum of 18" (450 mm) of cover exists over the chambers. Contact StormTech for additional guidance on allowable axle loads during paving. 3. Ground pressure for track dozers is the vehicle operating weight divided by total ground contact area for both tracks. Excavators will exert higher ground pressures based on loaded bucket weight and boom extension. Table 2 — Maximum Allowable Construction Vehicle Loadns 18"[457] 24'[610] 30" [762] 36' [9141 1510 [72] 1310 [631 [119] ©Initial Fill 24' [600] 32,D00 [1421 16,000171] 12" [305] 2480 20,000 [89] Material Compacted 18" [4571 1770 [851 24"[6101 14301681 24" [6001 32,000 [142) 16,000 171] Loose/Dumped 4. Mini -excavators (< B4OOOIbs/3.628 kg) can be used with at least 12" (300 mm) of stone over the chambers and are limited by the 18' [4501 32,000 (142] 16,000 [71 ] maximum ground pressures in Table 2 based on a full bucket at maximum boom extension. 5. Storage o(materials such as construction materials, equipment. spoils, etc. should not be located over the StormTech system. The use of equipment over the StormTech system not covered in Table 2 (ex. soil mixing equipment, cranes, etc) is limited. Please contact StormTech for more information. ®Embedment 12" [300] 16,000 [71] NOT ALLOWED Stone 6' [150] 8,000 [35] NOT ALLOWED 6. Allowable track loads based on vehicle travel only. Excavators shall not operate on chamber beds until the total backfill reaches 3 feet (900 mm) over the entire bed. ADS "Terms and Conditions of Sale" are available on the ADS website, www.atls-pipe.com. Advanced Drainage Systems, the ADS logo, and the green stripe are registered trademarks of Advanced Drainage Systems. StormTech® and the Isolator® Row are registered trademarks of StormTech, Inc 8090113 09/13 ©2013 Advanced Drainage Systems, Inc. Table 3 —Placement Methods and Descriptions 30" [7621 36"[9141 12"[3051 8' [4571 24'[6101 30' [1621 36° [9141 2" [3051 8" [4571 24" [6101 30" [7621 36" [9141 2" [3051 8" [4571 24"[610] 30"[7621 36'[9141 12'[3051 8'[4571 24"[6101 3D' [7621 36" [9141 1210 [58] 1070 [51] 2245 [1071 625 [78] 1325 [631 35 [54] 010 [481 2010 [961 480 [711 1220 [58] 1060 [51] 950 [45] 54D p41 90 [57] 010 [481 910 [43] 640 [401 1070 [51] 900 [43] 800 [38] 760 [36] 720 [34] 20,000 [891 Aoller gross vehicle weight not to exceed 124000 tbs,153 kN] 20,000 [89] Roller grass vehicle weight not to exceed 12,000 tbs. [53 kN] 20,000[89] Roller gross vehicle weight not to exceed 12,000 lbs. (53 K NOT ALLOWED Frei Fill Avariety of placement methods may be 36" (900 mm) minimum Dozers to push parallel to Roller travel parallel to rows Material used. All construction loads must not cover required for dump rows until 36' (900mmj only until 36" (900 mm) exceed the maximum limits in Table 2. trucks to dump over compaced cover is compacted cover is chambers, reached.4 reached. ©Initial Fill Excavator positioned off bed recom- Asphalt can be dumped into Small LGP track dozers $ skid Use dynamic force of roller Material mended. Small excavator allowed over paver when compacted loaders allowed to grade cover only after compacted fill chambers. Small dozer allowed, pavement subbase reaches stone with at least 6'(150 mm) depth reaches l2"(300 mm) 18"(450 mm) above top of stone under tracks at all times. over chambers. Rol ler travel chambers. Equipment must push parallel parallel to chamber rows only. to rows at all times. ©Embedment No equipment al lowed on bare cham- No wheel loads allowed. No tracked equipment is No rollers allowed. Stone bers. Use excavator or stone conveyor Material must be placed allowed on chambers until a positioned off bed or on foundation outside the limits of the min. 6" (150 mm) cover stone to evenly fill around all cham- chamber bed. stone is in place. bers to at least the top of chambers. ® Foundation No StormTech restrictions. Contractor responsible for any conditions or requirements by others relative to subgrade bearing Stone capacity, dewatering or protection of subgrade. Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com APPENDIX D Notice of Intent I 0806372691 NOTICE 011' 111N':).')111 '.L' New York State Department of Environmental Conservation _ Division of Water =625 Broadway, 4th Floor NYRL Albany, New York 12233-3505 (for DEC use only) Stormwater Discharges Associated with Construction Activity Under State Pollutant Discharge Elimination System (SPDES) General Permit # GP -0-15-002 All sections must be completed unless otherwise noted. Failure to complete all items may result in this form being returned to you, thereby delaying your coverage under this General Permit: Applicants must read and understand the conditions of the permit and prepare a Stormwater Pollution Prevention Plan prior to submitting this NOI. Applicants are responsible for identifying and obtaining other DEC permits that may be required. -IMPORTANT- RETURN THIS FORM TO THE ADDRESS ABOVE OWNER/OPERATOR MUST SIGN FORM Owner/Operator Information Owner/Onerato Co p n Name/Private Owner Name/Municiplality Name) TOW N OjFj C101RITILIAINIDIVI`ILILIEI I I I I I I )ITIUr�PIPIERI GlnisitPerson �tNm (IIf CONSULTANT � 1 f I Owner/OperatorlJ l GI nl a l ContactPerson elrsl n l First sl l a le I I I I J 1 1 11 1 1 R I C H A R D Owner/operator Mailing Address 1315 771 ITIEIRIRIAIC]ET IR101AID1 LI I I I I I I I LI Cit (ILIII�L -(Tf I I I I IL1 C O R TILIALNIDIVTIILILIEI I I I I I U I I I I I I I' L I I I ITL State Zi N Y 1 310141 5 -� Phone (Owner/Operator) Fax (Owner/Operator) FFH -L- 60 9 1 FMLUH Email Owner/0 erator) S U P EIRIV�IrIoLI11@I CToIRIT1LIAINIDI�IIILILIEI 'IDIRI�I IIIIIII I I I_I I I f I I I_I I I n 1 1 1 1 1 1 1 1 FED TAX ID L- [ [TI I M (not required for individuals) \ L LPage 1 of 14 J I 1443372699 Project Site Name TRIA CIIIEI IRI01AID Project Site Information ©©©©©©N.WMI IPILIEIX.LLI I Street AddressNOT�P-.O. BOX) NIYISI IRIOIUIT� 11131 I&I IGIRIAICI IIEI IRICIAIDI I I TTI Side of Street O North O South O East O West City ICIO�RIT(L AINlD�VIITL ISSLIEI BIUiIDINI II II PI) I I I I ILLI 1 1 State Zi County DEC Re ion N Y I I I I I I _ ICIOIRITILIAINIDI 1_1 H I 1 1 n H Name of Nearest Cross Street B Y R NIEI IHI0IJLI0Iw1 ICIRIUISISIIINIGI I I I I I I IM I I I I I I LL D�is�t anc�e I I 1 101 Cross Street (Feet) 1 Tax Map Numbers Section -Block -Parcel I I I I I H I I I I I I F Project In Relation to Cross Street O North O South O East O at Tax Map Numbers IIIIIIIIIIIIIII� 1. Provide the Geographic Coordinates for the project site in NYTM Units. To do this you must go to the NYSDEC Stormwater Interactive Map on the DEC website at: www.dec.ny.gov/imsmaps/stormwater/viewer.htm Zoom into your Project Location such that you can accurately click on the centroid of your site. Once you have located your project site, go to the tool boxes on the top and choose "i"(identify). Then click on the center of your site and a new window containing the X, Y coordinates in UTM will pop up. Transcribe these coordinates into the boxes below. For problems with the interactive map use the help function. X Coordinates (Eastin ) Y Coordinates FTTTIIII (Northing) 2. What is the nature of this construction project? O New Construction O Redevelopment with increase in impervious area O Redevelopment with no increase in impervious area LPage 2 of 19 J I 2300372692 3. Select the predominant land use for both pre and post development conditions. SELECT ONLY ONE CHOICE FOR EACH Pre -Development Post -Development Existing Land Use Future Land Use O FOREST O SINGLE FAMILY HOME Number of Lots O PASTURE/OPEN LAND O SINGLE FAMILY SUBDIVISION O CULTIVATED LAND O TOWN HOME RESIDENTIAL O SINGLE FAMILY HOME O MULTIFAMILY RESIDENTIAL O SINGLE FAMILY SUBDIVISION O INSTITUTIONAL/SCHOOL O TOWN HOME RESIDENTIAL O INDUSTRIAL O MULTIFAMILY RESIDENTIAL O COMMERCIAL O INSTITUTIONAL/SCHOOL O MUNICIPAL O INDUSTRIAL O ROAD/HIGHWAY O COMMERCIAL O RECREATIONAL/SPORTS FIELD O ROAD/HIGHWAY O BIKE PATH/TRAIL O RECREATIONAL/SPORTS FIELD O LINEAR UTILITY (water, sewer, gas, etc.) O BIKE PATH/TRAIL O PARKING LOT O LINEAR UTILITY O CLEARING/GRADING ONLY O PARKING LOT O DEMOLITION, NO REDEVELOPMENT O OTHER O WELL DRILLING ACTIVITY *(Oil, Gas, etc.) [T I I I IJ O OTHER 1111111111711 W 1 *Note: for gas well drilling, non -high volume hydraulic fractured wells only 9. 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.) Total Site Area Total Area To BeDpi stur'bed L W'[] Existing Impervious Area To Hs Disturbed Future Impervious Area Within Disturbed Area I MOD 5. Do you plan to I disturb more than 5 acres of soil at any one time? O Yes O No 6. Indicate the percentage of each Hydrologic Soil Group (HSG) at the site. A B C D 1 0 0 % 1 1% 11 o FM o 7. Is this a phased project? O Yes ONO Start Date J End Date 8. Enter the planned start and end m/ LL] dates of the disturbance activities. LPage 3 of 14 J I 7121372698 9. Identify the nearest surface waterbody(ies) to which construction site runoff will discharge. Name B EIAIVIEIRLICIR EIEIKI 11 I7 I I I LI I-LTTL--III 1 I I I I 1 17 1 1 1 1 1.1 F I I 11 I I L I I L I 1 I 1 1_1 L I I I_I 9a. Type of waterbody identified in Question 9? O Wetland / State Jurisdiction On Site (Answer 9b) O Wetland / State Jurisdiction Off Site O Wetland / Federal Jurisdiction On Site (Answer 9b) O Wetland / Federal Jurisdiction Off Site O Stream / Creek On Site 9 Stream / Creek Off Site O River On Site O River Off Site 9b. How was the wetland identified? O Lake On Site O Regulatory Map O Lake Off Site O Delineated by Consultant O Other Type On Site O Delineated by Army Corps of Engineers \O Type OffSite I I I �n — OOther (identify) 1 I LFFFTTFF I I I I I� 10. Has the surface waterbody(ies) in question 9 been identified as a O O No 303 (d) segment in Appendix E of GP -0-15-002? Yes 11. Is this project located in one of the Watersheds identified in Appendix C of GP -0-15-002? O Yea O No 12. Is the project located in one of the watershed areas associated with AA and AA -S classified O Yes O No 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 O Yes O No identified as an E or F on the USDA Soil Survey? If Yes, what is the acreage to be disturbed? 14. Will the project disturb soils within a State regulated wetland or the protected 100 foot adjacent O Yes O No area? LPage 9 of 19 I 5764372699 15. Does the site runoff enter a separate storm sewer system (including roadside drains, swales, ditches, O Yes O No O Unknown culverts, etc)? 16. What is the name of the municipality/entity that owns the separate storm sewer system? T O WINI IOIF LCIOIRjT n AIN LDIVIIIL rLIELI ( INIYISIDIOITI I I I 1117 I I I I_[ I I I I I U I 17. Does any runoff from the site enter a sewer classified l� as a Combined Sewer? 18. Will future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law? 20. Is this a remediation project being done under a Department approved work plan? (i.e. CERCLA, RCRA, Voluntary Cleanup Agreement, etc.) 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. �FI � O Unknown C��S��IR7 23. Has the postconstruction stormwater management practice component of the SWPPP been developed in conformance with the current NYS O Yes O No Stormwater Ma=nagement Design Manual? Page 5 of 14 Is this property owned by a state authority, state agency, 19. federal government or local government? 20. Is this a remediation project being done under a Department approved work plan? (i.e. CERCLA, RCRA, Voluntary Cleanup Agreement, etc.) 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. �FI � O Unknown C��S��IR7 23. Has the postconstruction stormwater management practice component of the SWPPP been developed in conformance with the current NYS O Yes O No Stormwater Ma=nagement Design Manual? Page 5 of 14 I 4277372697 24. The Stormwater Pollution Prevention Plan (SWPPP) was prepared by: O Professional Engineer (P.E.) O Soil and Water Conservation District (SWCD) O Registered Landscape Architect (R.L.A) O Certified Professional in Erosion and Sediment Control (CPESC) O Owner/Operator O Othe` I -T � I I U I I I I I FT -7 IJHIAIre�CICI7SIUILITI I[NI 1,1 Contac�I T, $p Ic e� First ) I I HARR I SII K R I S T Y 41411 Address o1U1T1H1�SIAILIIINIAI City 1 sTY1RIA1 C1U1 S1 EI I L I I -TTS State Zi N Y I Phone -�-� 11NC1 Email K H A R R IIS @ C HIAI C101MI PIAC I E S \��1111111 SWPPP Preparer Certification 11111111111111 TI I I I I_I LJ 1 1 11 1 1 1 1 11_._ 111_1 I> --ITIS 1 1 1 1 TTT� 111111111111 I U 1111111IIIITI Fax 1-L-� CCI�IIII 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 -0-15-002. 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 j MI K R I S T 1 Y� I I I 1 I� 1�T-1 M❑ IH7AIRJR)IISI I I I I TTT-1 I I 111 Signature 40 P%W LPage 6 of 19 I 8196372691 25. Has a construction sequence schedule for the planned management practices been prepared? 26. Select all of the erosion and sediment control practices that will be employed on the project site: Temporary Structural O Check Dams O Construction Road Stabilization O Dust Control O Earth Dike O Level Spreader O Perimeter Dike/Swale ()Pipe Slope Drain O Portable Sediment Tank O Rock Dam O Sediment Basin O Sediment Traps O Silt Fence 4 Stabilized Construction Entrance I 0 Storm Drain Inlet Protection O Straw/Hay Bale Dike O Temporary Access Waterway Crossing O Temporary Stormdrain Diversion O Temporary Swale O Turbidity Curtain O Water bars Biotechnical O Yes O No I Vegetative Measures O Brush Matting O Dune Stabilization O Grassed Waterway O Mulching O Protecting Vegetation O Recreation Area Improvement O Seeding O Sodding O Straw/Hay Bale Dike O Streambank Protection O Temporary Swale O Topsoiling O Vegetating Waterways Permanent Structural O Debris Basin O Diversion O Grade Stabilization Structure O Land Grading O Lined Waterway (Rock) O Paved Channel (Concrete) O Paved Flume O Brush Matting O Retaining Wall O Wattling O Riprap Slope Protection O Rock Outlet Protection O Streambank Protection Other IIIIIIIIIIITIIHIIII11111TTIIIIIIIIIIIITU I I I I T I 11_ _1J 1 I 1 1 1 1 I I I IT 1 1 1 1 11.1 LPage 7 of 19 J I 2254372690 279 27a Post -construction Stormwater Management Practice (SMP) Requirements Important: Completion of Questions 27-39 is not required SMPs if response to Question 22 is No. in Identify all site planning practices that were used to prepare the final site plan/layout for the project. O Preservation of Undisturbed Areas O Preservation of Buffers O Reduction of Clearing and Grading O Locating Development in Less Sensitive Areas O Roadway Reduction ,)Sidewalk Reduction -)Driveway Reduction :)Cul-de-sac Reduction )Building Footprint Reduction )Parking Reduction Indicate which of the following soil restoration criteria was used to address the requirements in Section 5.1.6("S0il Restoration") of the Design Manual (2010 version). O All O compacted areas 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. 26. Provide the total Water Quality Volume (WQv) required for this project (based on final site plan/layout). Total WQv Required [—M.[—Macre-feet 29. Identify disturbed areas will be restored in accordance with the Soil SMPs with RRv Capacity in Table 1 (See Page 9) that were used to reduce Restoration requirements in Table 5.3 of the Design Manual (see page 5-22). O compacted areas were considered as impervious cover when calculating the WQv Required, and the compacted areas were assigned a post -construction Hydrologic Soil Group (HSG) designation that is one level less permeable than existing conditions for the hydrology analysis. 26. Provide the total Water Quality Volume (WQv) required for this project (based on final site plan/layout). Total WQv Required [—M.[—Macre-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. LPage 8 of 14 I 5997372697 Table 1 - Runoff Reduction (RR) Techniques and Standard Stormwater Management Practices (SMPs) Total Contributing Total Contributing Ir Area (acres) Impervious Area(acres) RR Techniques (Area Reduction) O Conservation of Natural Areas (RR -1) ... �•� and/or '� O SheetflowBuffers/Filters It Riparian Buffers/Filters Strips (RR -2),,,,,,,,,, and/or O Tree Planting/Tree Pit (RR -3) ,,,,,1111. �'� and/or O Disconnection of Rooftop Runoff (RR -9)•. and/or RR Techniques (Volume Reduction) O Vegetated Swale (RR -5) ........•••••••••••••••••••••••••••••••• •� O Rain Garden (RR -6) ............................................ O Stormwater Planter (RR -7) ......•••••••••••••••••••••••••••• ' O Rain Barrel/Cistern (RR -8) .................................... ( O Porous Pavement (RR -9) ••••••• OGreen Roof (RR -10) ............11.111 .......................... Standard SMPs with RRv Capacity — O Infiltration Trench (I-1)••�������••••••••••••••••••��������•• O Infiltration Basin (I-2) ..... •�•••••••••••••••••• ODry Well (I-3) ................................................ O Underground Infiltration System (I-9) •••••••••••••••••••••••• O Bioretention (F-5) ............................................ ODry Swale (0-1) .............................1................. Standard SMPs O Micropool Extended Detention (P-1) ............................ OWet Pond (P-2) ................................................ O Wet Extended Detention (P-3) •••••••••••••••••••••••••••••••••• O Multiple Pond System (P-9)••••••••••••••••••••••••�••••••••••• OPocket Pond(P-5)............................................. O Surface Sand Filter (F-1) •••••••••••••••••••••••••.......• O Underground Sand Filter (F-2) •••••••••••••••••••••••••••• O Perimeter Sand Filter (F-3) •••••••••••••••••••••••••••••••• O Organic Filter (F-4) ......................................... O Shallow Wetland (W-1) ......................................... O Extended Detention Wetland (W-2) O Pond/Wetland System (W-3) ..................................... � O Pocket Wetland (W -Q) .......................................... O Wet Swale (0-2) ............................................... 1111111110 Page 9 of 14 I 6272372699 Table 2 - Alternative SMPs (DO NOT INCLUDE PRACTICES BEING USED FOR PRETREATMENT ONLY) Alternative SMP Total Contributing Impervious Area(acres) OHydrodynamic ............................................... OWet Vault .................................................. OMedia Filter ............................................... O Other I I I I I U .................. Provide the name and manufacturer of the Alternative SMPs (i.e. proprietary practice(s)l being used for WQv treatment. Name III I I I I I I I= I I I I I` II II I I ��TI�TTTI Manufacturer FI I I I I I I I I I I I I I L1—f_I I I I I I I I 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. 30. Indicate the Total RRv provided by the RR techniques (Area/Volume Reduction) and Standard SMPs with RRv capacity identified in question 29. Total RRv provided L_J__U'=acre-feet 31. Is the Total RRv provided (#30) greater than or equal to the total WQv required (#28). O Yes ONO If Yes, go to question 36. If No, go to question 32. 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 32a. Is the Total RRv provided (#30) greater than or equal to the Minimum RRv Required (#32)? O Yes O No If Yes, go to question 33. Note: Use the space provided in question 439 to summarize the specific site limitations and justification for not reducing 100% of WQv required (428). 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. Page 10 of 14 F5736372698 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. 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. to the practice - RRv provided by the practice. WQv Provided M'[ -Macre -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) 34. Provide the sum of the Total RRv provided (#30) and �� the WQv provided (#33a). ' 35. Is the sum of the RRv provided (#30) and the WQv provided (#33a) greater than or equal to the total WQv required (#28)? O Yes O No 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. 36. Provide the CPv Required CPv total Channel Protection Storage Volume (CPv) required and provided or select waiver (36a), if applicable. Provided _L_L__]'L_L_L]acre-feet L-L-U'L-L-Llacre-feet 36a. The need to provide channel protection has been waived because: O Site discharges directly to tidal waters or a fifth order or larger stream. O Reduction of the total CPv is achieved on site through runoff reduction techniques or infiltration systems. 37 Provide the Overbank Flood (Qp) and Extreme Flood (Qf) control criteria or select waiver (37a), if applicable. Total Overbank Flood Control Criteria (Qp) Pre -Development Post -development Total Extreme Flood Control Criteria (Qf) Pre -Development LPage 11 of 14 Post -development I 1050372693 37a. The need to meet the Qp and Qf criteria has been waived because: O Site discharges directly to tidal waters or a fifth order or larger stream. O Downstream analysis reveals that the Qp and Qf controls are not required 39 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 _= I I I LI I� I I IJ I I I I I I I I I I I I I I I I7TT1 IL I I I A L1 I I I I I I I I I I IT I I I I IL1 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. All of the 7.77 acres of impervious surface tributary to the underground infiltration system is first G ibutary to bioretention areas. Also, a portion of the impervious surface tributary to one of the infiltration basins is existing offsite impervious surface. Page 12 of 19 F5396372690 40. Identify other DEC permits, existing and new, that are required for this project/facility. O Air Pollution Control O Coastal Erosion O Hazardous Waste O Long Island Wells O Mined Land Reclamation O Solid Waste O Navigable Waters Protection / Article 15 O Water Quality Certificate O Dam Safety O Water Supply O Freshwater Wetlands/Article 24 O Tidal Wetlands O Wild, Scenic and Recreational Rivers O Stream Bed or Bank Protection / Article 15 O Endangered or Threatened Species(Incidental Take Permit) O Individual SPDES O SPDES Multi -Sector O Other F—F—F—I I I II II O None 41. Does this project require a US Army Corps of Engineers O Yes O No Wetland PermitI I I I I.❑ If Yes, Indicate Size of Impact. 42. Is this project subject to the requirements of a regulated, traditional land use control MS4? O Yes O No (If No, skip question 43) 43. Has the "MS4 SWPPP Acceptance" form been signed by the principal executive officer or ranking elected official and submitted along O Yes 0 No with this NOI? 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. F I Y I R LPage 13 of 14 I 8741372697 Owner/Operator Certification I have read or been advised of the permit conditions and believe that Z 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 reas a result of submitting this NOI and can be as long as sixty (60) business days as provided for inrthegeneral 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. R UI CA I HI AI R1 D1l Nam@ I II R I Print Last Na e T U P P E R Owner/Operator Signature Date m/FE] /� Page 19 of 14 J APPENDIX E SPDES Genernl Permit (GP -O -I 5-002) NEW YORK Department of $TATE. OF OPPORTUNITY Environmental Conservation NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES From CONSTRUCTION ACTIVITY Permit No. GP -0-15-002 Issued Pursuant to Article 17, Titles 7, 8 and Article 70 of the Environmental Conservation Law Effective Date: January 29, 2015 John J. Ferguson Chief Permit Admin'strator Au on ed Si nature Address: NYS DEC Division of Environmental Permits 625 Broadway, 4th Floor Albany, N.Y. 12233-1750 Expiration Date: January 28, 2020 1/12/15 Date PREFACE Pursuant to Section 402 of the Clean Water Act , stormwater discharges from certain construction activities are unlawful unless they are authorized by a National Pollutant Discharge Elimination System ("NPDES) permit or by a state permit program. New York's State Pollutant Discharge Elimination System ("SPDES) is a NPDES- approved program with permits issued in accordance with the Environmental Conservation Law ("ECL'). This general permit ("permit") is issued pursuant to Article 17, Titles 7, 8 and Article 70 of the ECL. An owner or operator may obtain coverage under this permit by submitting a Notice of Intent ("NOI") to the Department. Copies of this permit and the NOI for New York are available by calling (518) 402-8109 or at any New York State Department of Environmental Conservation ("the Department") regional office (see Appendix G).They are also available on the Department's website at: http://www.dec,ny.ciov/ 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)(1 4)(x), (15)(i), and (15)(ii), constitute construction of a point source and therefore, pursuant to Article 17-0505 of the ECL, the owner or operator must have coverage under a SPDES permit prior to commencing construction activity. They cannot wait until there is an actual discharge from the construction site to obtain permit coverage. *Note: The italicized words/phrases within this permit are defined in Appendix A. NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES Part I. PERMIT COVERAGE AND LIMITATIONS..............................................................1 A. Permit Application.................................................................................................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..,,,.," ... 11106441don Elladmasoll", Ilk, 01.119 F. Activities Which Are Ineligible for Coverage Under This General Permit..............9 Part II. OBTAINING PERMIT COVERAGE.....................................................................12 A. Notice of Intent (NOI) Submittal..........................................................................12 B. Permit Authorization............................................................................................13 C. General Requirements For Owners or Operators With Permit Coverage ...........15 D. Permit Coverage for Discharges Authorized Under GP -0-10-001 .......................17 E. Change of OwnerorOperator.............................................................................17 Part III. STORMWATER POLLUTION PREVENTION PLAN(SWPPP)...........................18 A. General SWPPP Requirements, . . . . . . . . . I * 6 1 * I I a I I a I s . . . . vote* . . . . . 18 B. Required SWPPP Contents................................................................................20 C. Required SWPPP Components by Project Type.................................................23 Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS.....................................24 A. General Construction Site Inspection and Maintenance Requirements..............24 B. Contractor Maintenance Inspection Requirements.............................................24 C. Qualified Inspector Inspection Requirements, ......... .............. 24 Part V. TERMINATION OF PERMIT COVERAGE...........................................................28 A. Termination of Permit Coverage.........................................................................28 Part VI. REPORTING AND RETENTION OF RECORDS................................................30 A. Record Retention................................................................................................30 B. Addresses...........................................................................................................30 Part VII. STANDARD PERMIT CONDITIONS.,., ... ... 31 A. Duty to Comply. . I I I I I I I I I I I I I I I I I * I I I I I I I I I I I I I I I I I I I I I I 1 0 4 1 1 1 0 0 4 1 1 1 6 1 1 & a B. Continuation of the Expired General Permit........................................................31 C. Enforcement',,',',,'.,,,,,., ................... ........................ A .... 31 D. Need to Halt or Reduce Activity Not a Defense',,", E. Duty to Mitigate...................................................................................................32 F. Duty to Provide Information.................................................................................32 G. Other Information................................................................................................32 H. Signatory Requirements..,. I Ilk q.. let 'I ....... .q. ... I I I I,, ....... 32 I. Property Rights, I I I I I I I I . . . . . . . . . . . . . . . **Sol a 9 a W . a & * 0 4 4 4 . . . . . woottwo*6 40*vow 34 J. Severability.............................................................................................................34 K. Requirement to Obtain Coverage Under an Alternative Permit',,'.,. I WF4 34 L. Proper Operation and Maintenance....................................................................35 M. Inspection and Entry ...........................................................................................35 N. Permit Actions., . I . ............................................................................................36 O. Definitions ............1111 ........................ 1111......... ........ ........................ 36 P. Re -Opener Clause, I I I A I * I I I I * 1 0 1 , 0 . . . . . . S . . . . . . . . . . . . . . 6 & & & & & ft . .......................36 Q. Penalties for Falsification of Forms and Reports..... I I 1 0 1 1 0 . 4 1 1 * I I I I 1 036 R. Other Permits......................................................................................................36 APPENDIXA....................................................................................................................37 APPENDIX6....................................................................................................................44 APPENDIXC...................................................................................................................46 APPENDIXD...................................................................................................................52 APPENDIXE....................................................................................................................53 APPENDIX F ..... ..................................... _...... u ... �5 (Part 1) Part I. PERMIT COVERAGE AND LIMITATIONS A. Permit Application This permit authorizes stormwater discharges to surface waters of the State from the following construction activities identified within 40 CFR Parts 122.26(b)(14)(x), 122.26(b)(15)(i) and 122.26(b)(15)(ii), provided all of the eligibility provisions of this permit are met: 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 orsale 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 watersheds) identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. B. Effluent Limitations Applicable to Discharges from Construction Activities Discharges authorized by this permit must achieve, at a minimum, the effluent limitations in Part 1.6.1. (a) — (f) of this permit. These limitations represent the degree of effluent reduction attainable by the application of best practicable technology currently available.. Erosion and Sediment Control Requirements -The owner or operator must selectI 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 1.B.1.(a) — (f) of this permit and be in accordance with the New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005, using sound engineering judgment. Where control measures are not designed in conformance with the design criteria included in the technical standard, the owner or operator must include in the Stormwater Pollution Prevention Plan ("SWPPP") the reason(s) for the deviation or alternative design and provide information (Part I.B.I) which demonstrates that the deviation or alternative design is equivalent to the technical standard. �. Erosion and Sediment Controls. Design, install and maintain effective erosion and sediment controls to minimize the discharge of pollutants and prevent a violation of the water quality standards. At a minimum, such controls must be designed, installed and maintained to: (i) Minimize soil erosion through application of runoff control and soil stabilization control measure to minimize pollutant discharges; (ii) Control stormwater discharges to minimize channel and streambank erosion and scour in the immediate vicinity of the discharge points; (iii) Minimize the amount of soil exposed during construction activity; (iv) Minimize the disturbance of steep slopes; (v) Minimize sediment discharges from the site; (vi) Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas and maximize stormwater infiltration to reduce pollutant discharges, unless infeasible; (vii) Minimize soil compaction. Minimizing soil compaction is not required where the intended function of a specific area of the site dictates that it be compacted; and (viii) Unless infeasible, preserve a sufficient amount of topsoil to complete soil restoration and establish a uniform, dense vegetative cover. b. Soil Stabilization. In areas where soil disturbance activity has temporarily or permanently ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within fourteen (14) days from the date the current soil disturbance activity ceased. For construction sites that directly discharge to one of the 303(d) segments listed in Appendix E or is located in one of the watersheds listed in Appendix C, the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven (7) days from the date the current soil disturbance activity ceased. See Appendix A for definition of Temporarily Ceased. c. Dewatering. Discharges from dewatering activities, including discharges 2 (Part 1.B.1.c) from dewatering of trenches and excavations, must be managed by appropriate control measures. d. Pollution Prevention Measures. Design, install, implement, and maintain effective pollution prevention measures to minimize the discharge of pollutants and prevent a violation of the water quality standards. At a minimum, such measures must be designed, installed, implemented and maintained to: (i) Minimize the discharge of pollutants from equipment and vehicle washing, wheel wash water, and other wash waters. This applies to washing operations that use clean water only. Soaps, detergents and solvents cannot be used; (ii) Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste and other materials present on the site to precipitation and to stormwater. Minimization of exposure is not required in cases where the exposure to precipitation and to stormwater will not result in a discharge of pollutants, or where exposure of a specific material or product poses little risk of stormwater contamination (such as final products and materials intended for outdoor use) ; and (iii) Prevent the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures. e. Prohibited Discharges. The following discharges are prohibited: (i) Wastewater from washout of concrete; Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds and other construction materials; (iii) Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; (iv) Soaps or solvents used in vehicle and equipment washing; and (v) Toxic or hazardous substances from a spill or other release. f. Surface Outlets. When discharging from basins and impoundments, the outlets shall be designed, constructed and maintained in such a manner that sediment does not leave the basin or impoundment and that erosion 3 (Part 1.13A.0 aL 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 construction stormwater 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. Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part I.C.2.a.(i) of this permit due to site limitations shall direct runoff from all newly constructed impervious areas to a RR technique or standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv shall be documented in the SWPPP. For each impervious area that is not directed to a RR technique or standard SMP with RRv capacity, the SWPPP must include documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. In no case shall the runoff reduction achieved from the newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section 4.3 of the Design Manual. The remaining portion of the total WQv 4 (Part I.C.2.a.ii) that cannot be reduced shall be treated by application of standard MPs, (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. ng Criteria for New Development in Enhanced Phosphorus Removal Watershed (i) Runoff Reduction Volume (RRv): Reduce the total Water Quality Volume (WQv) by application of RR techniques and standard SMPs with RRv capacity. The total WQv is the runoff volume from the 1 -year, 24 hour design storm over the post -developed watershed and shall be calculated in accordance with the criteria in Section 10.3 of the Design Manual. (ii) Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part I.C.2.b.(i) of this permit due to site limitations shall direct runoff from all newly constructed impervious areas to a RR technique or 5 (Part I.C.2.b.ii) standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv shall be documented in the 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. c. Sizing Criteria for Redevelopment Activity (Part I.C.2.c.1) (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 111.13.3, 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 921 (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. Channel Protection Volume (Cpv): Not required if there are no changes to hydrology that increase the discharge rate from the project site. Overbank Flood Control Criteria (Qp): Not required if there are no changes to hydrology that increase the discharge rate from the project site. (Part I.C.2.c.iv) (iv) Extreme Flood Control Criteria (Qf): Not required if there are no changes to hydrology that increase the discharge rate from the project site. d. Sizing Criteria foWill of Redevelopment Activity and New Development Construction projects that include both New Development and Redevelopment Activity shall provide post -construction stormwater management controls that meet the sizing criteria calculated as an aggregate of the Sizing Criteria in Part I.C.2.a. or b. of this permit for the New Development portion of the project and Part I.C.2.c of this permit for Redevelopment Activity portion of the project. D. Maintaining Water Quality The Department expects that compliance with the conditions of this permit will control discharges necessary to meet applicable water quality standards. It shall be a violation of the ECL for any discharge to either cause or contribute to a violation of water quality standards as contained in Parts 700 through 705 of Title 6 of the Official Compilation of Codes, Rules and Regulations of the State of New York, such as: 1. There shall be no increase in turbidity that will cause a substantial visible contrast to natural conditions; 2. There shall be no increase in suspended, colloidal or settleable solids that will cause deposition or impair the waters for their best usages; and 3. There shall be no residue from oil and floating substances, nor visible oil film, no, 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 waterquality 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.CA. 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 waterquality standards, or 8 (Part LD) iT 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 owneroroperator to obtain an individual SPDES permit to continue discharging. E. Eligibility Under This General Permit 1. This permit may authorize all discharges of stormwater from construction activityto surface waters of the State and groundwaters except for ineligible discharges identified under subparagraph F. of this Part. 2. Except for non-stormwater discharges explicitly listed in the next paragraph, this permit only authorizes stormwater discharges from construction activities. 3. Notwithstanding paragraphs E.1 and E.2 above, the following non- stormwater discharges may be authorized by this permit: discharges from firefighting activities; fire hydrant flushings; waters to which cleansers or other components have not been added that are used to wash vehicles or control dust in accordance with the SWPPP, routine external building washdown which does not use detergents; pavement washwaters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used; air conditioning condensate; uncontaminated groundwater or spring water; uncontaminated discharges from construction site de -watering operations; and foundation or footing drains where flows are not contaminated with process materials such as solvents. For those entities required to obtain coverage under this permit, and who discharge as noted in this paragraph, and with the exception of flows from firefighting activities, these discharges must be identified in the SWPPP. Under all circumstances, the owner or operator must still comply with water quality standards in Part LD of this permit. 4. The owner or operator must maintain permit eligibility to discharge under this permit. Any discharges that are not compliant with the eligibility conditions of this permit are not authorized by the permit and the owner or operator must either apply for a separate permit to cover those ineligible discharges or take steps necessary to make the discharge eligible for coverage. F. Activities Which Are Ineligible for Coverage Under This General Permit All of the following are not authorized by this permit: (Part LF) 1. Discharges after construction activities have been completed and the site has undergone final stabilization; 2. Discharges that are mixed with sources of non-stormwater other than those expressly authorized under subsection E.3. of this Part and identified in the SWPPP required by this permit; 3. Discharges that are required to obtain an individual SPDES permit or another SPDES general permit pursuant to Part VII.K. of this permit; 4. Construction activities or discharges from construction activities that may adversely affect an endangered or threatened species unless the owner or operator has obtained a permit issued pursuant to 6 NYCRR Part 182 for the project or the Department has issued a letter of non -jurisdiction for the project. All documentation necessary to demonstrate eligibility shall be maintained on site in accordance with Part II.C.2 of this permit. 5. Discharges which either cause or contribute to a violation of water quality standards adopted pursuant to the ECL and its accompanying regulations; 6. Construction activities for residential, commercial and institutional projects: a. Where the discharges from the construction activities are tributary to waters of the state classified as AA or AA -s; and Which disturb one or more acres of land with no existing impervious cover, and c. Which are undertaken on land with a Soil Slope Phase that is identified as U" E or F, or the map unit name is inclusive of 25% or greater slope, on the United States Department of Agriculture ("USDA") Soil Survey for the County where the disturbance will occur. 7. Construction activities for linear transportation projects and linear utility projects: a. Where the discharges from the construction activities are tributary b. Which disturb two or more acres of land with no existing impervious cover, and c. Which are undert aken on land with a Soil Slope Phase that is identified as an E or F, or the map unit name is inclusive of 25% or greater slope, on the USDA Soil Survey for the County where the disturbance will occur. 10 to waters of the state classified as AA or AA -s; and b. Which disturb two or more acres of land with no existing impervious cover, and c. Which are undert aken on land with a Soil Slope Phase that is identified as an E or F, or the map unit name is inclusive of 25% or greater slope, on the USDA Soil Survey for the County where the disturbance will occur. 10 (Part I.F.8) 8. Construction activities that have the potential to affect an historic property, unless there is documentation that such impacts have been resolved. The following documentation necessary to demonstrate eligibility with this requirement shall be maintained on site in accordance with Part II.C.2 of this permit and made available to the Department in accordance with Part VII.F of this permit: a. Documentation that the construction activity is not within an archeologically sensitive area indicated on the sensitivity map, and that the construction activity is not located on or immediately adjacent to a property listed or determined to be eligible for listing on the National or State Registers of Historic Places, and that there is no new permanent building on the construction site within the following distances from a building, structure, or object that is more than 50 years old, or if there is such a new permanent building on the construction site within those parameters that NYS Office of Parks, Recreation and Historic Preservation (OPRHP), a Historic Preservation Commission of a Certified Local Government, or a qualified preservation professional has determined that the building, structure, or object more than 50 years old is not historically/archeologically significant. • 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: (i) No Affect (ii) No Adverse Affect 11 (Part I.F &c.iii) (iii) Executed Memorandum of Agreement, or d. Documentation that: (i) SHPA Section 14.09 has been completed by NYS DEC or another state agency. 9. Discharges from construction activities that are subject to an existing SPDES individual or general permit where a SPDES permit for construction activity has been terminated or denied; or where the owner or operator has failed to renew an expired individual permit. Part II. OBTAINING PERMIT COVERAGE A.Notice of Intent (NOI) Submittal An owner or operator of a construction activity that is not subject to the requirements of a regulated, traditional land use control MS4 must first prepare a SWPPP in accordance with all applicable requirements of this permit and then submit a completed NOI form to the Department in order to be authorized to discharge under this permit. An owner or operator shall use either the electronic (eNO1) or paper version of the NOI that the Department prepared. Both versions of the NOI are located on the Department's website (htto://www.dec.nv.aov/ ). 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, 4m Floor Albany, New York 12233=3505 owner or operator of a construction activity that is subject to the requirements of a regulated, traditional land use control MS4 must first prepare a SWPPP in accordance with all applicable requirements of this permit and then have its SWPPP reviewed and accepted by the regulated, traditional land use control MS4 prior to submitting the NOI to the Department. The owner or operator shall have the "MS4 SWPPP Acceptance" form signed in accordance with Part VII.H., and then submit that form along with a completed NOI to the Department. An owner or operator shall use either the electronic (eNO1) or paper version of the NOI. The paper version of the NOI shall be signed in accordance with Part VII.H. of this permit and submitted to the address in Part II.A.1. 12 (Part II.A.2) The requirement for an owner or operator to have its SWPPP reviewed and accepted by the MS4 prior to submitting the NOI to the Department does not apply to an owner or operator that is obtaining permit coverage in accordance with the requirements in Part II.E. (Change of Owner or )perator) or where the owner or operator of the construction activity is the regulated, traditional land use control MS4. 3. The owner or operator shall have tl Preparer Certification" statement on the Department. e SWPPP preparer sign the "SWPPP the NOI prior to submitting the form to As of the date the NOI is submitted to the Department, the owneroroperator shall make the NOI and SWPPP available for review and copying in accordance with the requirements in Part VII.F. of this permit. B. Permit Authorization 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: project review pursuant to the State Environmental Quality Review Act ("SEQRA") have been satisfied, when SEQRA is applicable. See the Department's website thtto://www.dec,nv,aov/1 for more information, b. where required, all necessary Department permits subject to the Uniform Procedures Act ("UPA') (see 6 NYCRR Part 621) have been obtained, unless otherwise notified by the Department pursuant to 6 NYCRR 621.3(a)(4). Owners or operators of construction activities that are required to obtain UPA permits must submit a preliminary SWPPP to the appropriate DEC Permit Administrator at the Regional Office listed in Appendix F at the time all other necessary UPA permit applications are submitted. The preliminary SWPPP must include sufficient information to demonstrate that the construction activity qualifies for authorization under this permit, c. the final SWPPP has been prepared, and d. a complete NOI has been submitted to the Department in accordance with the requirements of this permit. 3. An owner or operator that has satisfied the requirements of Part 11.6.2 above 13 (Part will be authorized to discharge stormwater from their construction activity in accordance with the following schedule: a. For construction activities that are not subject to the requirements of a regulated, traditional land use control MS4: (i) Five (5) business days from the date the Department receives a complete electronic version of the NOI (eNO1) for construction activities with a SWPPP that has been prepared in conformance with the design criteria in the technical standard referenced in Part 111.13A 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 NO[ (electronic or paper version) for construction activities with a SWPPP that has not been prepared in conformance with the design criteria in technical standard referenced in Part 111.6.1. 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 111.6.1 and the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, for construction activities that require post - construction stormwater management practices pursuant to Part III.C. b. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4: (i) Five (5) business days from the date the Depart ment receives both a complete electronic version of the NOI (eNO1) and signed "MS4 SWPPP Acceptance" form, or (ii) Ten (10) business days from the date the Department receives both a complete paper version of the NOI and signed "MS4 SWPPP Acceptance' form. 4. The Department may suspend or deny an owner's or operator's coverage 14 (Part II.6.4) under this permit if the Department determines that the SWPPP does not meet the permit requirements. In accordance with statute, regulation, and the terms and conditions of this permit, the Department may deny coverage under this permit and require submittal of an application for an individual SPDES permit based on a review of the NOI or other information pursuant to Part Il, 5. Coverage under this permit authorizes stormwater discharges from only those areas of disturbance that are identified in the NOI. If an owner or operator wishes to have stormwater discharges from future or additional areas of disturbance authorized, they must submit a new NO] 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.B. of this permit. C. General Requirements For Owners or Operators With Permit Coverage 1. The owner or operator shall ensure that the provisions of the SWPPP are implemented from the commencement of construction activity until all areas of disturbance have achieved final stabilization and the Notice of Termination ("NOT') has been submitted to the Department in accordance with Part V. of this permit. This includes any changes made to the SWPPP pursuant to Part III.A.4. of this permit. 2. The owner or operator shall maintain a copy of the General Permit (GP -O- 15 002), NOI, NO/ Acknowledgment Letter, SWPPP, MS4 SWPPP Acceptance form, inspection reports, and all documentation necessary to demonstrate eligibility with this permit at the construction site until all disturbed areas have achieved final stabilization and the NOT has been submitted to the Department. The documents must be maintained in a secure location, such as a job trailer, on-site construction office, or mailbox with lock. The secure location must be accessible during normal business hours to an individual performing a compliance inspection. 3. The owner or operator of a construction activity shall not disturb greater than five (5) acres of soil at any one time without prior written authorization from the Department or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the regulated, traditional land use control MS4 (provided the regulated, traditional land use control MS4 is not the owner or operator of the construction activity). At a minimum, the owner or operator must comply with the following requirements in order to be authorized to disturb greater than five (5) acres of soil at any one time: a. The owner or operator shall 15 (Part II.C.3.a) have a qualified inspector conduct at least two (2) site inspections in accordance with Part IVC. of this permit every seven (7) calendar days, for as long as greater than five (5) acres of soil remain disturbed. The two (2) inspections shall be separated by a minimum of two (2) full calendar days. b. In areas where soil disturbance activity has temporarily or permanently ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven (7) days from the date the current soil disturbance activity ceased. The soil stabilization measures selected shall be in conformance with the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. c. The owneroroperatorshall 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 operators coverage under this permit at any time if the Department determines that the SWPPP does not meet the permit requirements. Upon a finding of significant non-compliance with the practices described in the SWPPP or violation of this permit, the Department may order an immediate stop to all activity at the site until the non-compliance is remedied. The stop work order shall be in writing, describe the non-compliance in detail, and be sent to the owner or operator. 5. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4, the owner or operator shall notify the regulated, traditional land use control MS4 in writing of any planned amendments or modifications to the post -construction stormwater management practice component of the SWPPP required by Part IIIA. 4. and 5, of this permit. Unless otherwise notified by the regulated, traditional land use control MS4, the owner or operator shall have the SWPPP amendments or modifications reviewed and accepted by the regulated, traditional land use control MS4 prior to commencing construction of the post -construction stormwater management practice 16 (Part ILD) D. Permit Coverage for Discharges Authorized Under GP -040-001 1. Upon renewal of SPDES General Permit for Stormwater Discharges from Construction Activity (Permit No. GP -0-10-001), an owner or operator of a construction activity with coverage under GP -0-10-001, as of the effective date of GP -0-15-002, shall be authorized to discharge in accordance with GP -0-15-002, unless otherwise notified by the Department. An owner or operator may continue to implement the technical/design components of the post -construction stormwater management controls provided that such design was done in conformance with the technical standards in place at the time of initial project authorization. However, they must comply with the other, non -design provisions of GP -0-15-002. E. Change of Owner orOperafor 2. When property ownership changes or when there is a change in operational control over the construction plans and specifications, the original owner or operator must notify the new owner or operator, in writing, of the requirement to obtain permit coverage by submitting a NOI with the Department. Once the new owner or operator obtains permit coverage, the original owner or operator shall then submit completed NOT with the name and permit identification number of the new owner or operator to the Department at the address in Part II.A.1, of this permit. If the original owner or operator maintains ownership of a portion of the construction activity and will disturb soil, they must maintain their coverage under the permit. Permit coverage for the new owner or operator will be effective as of the date the Department receives a complete NOI, provided the original owner or operatorwas not subject to a sixty (60) business day authorization period that has not expired as of the date the Department receives the NOI from the new owner or operator. 17 (Part III) Part III. STORMWATER POLLUTION PREVENTION PLAN (SWPPP) A. General SWPPP Requirements 1. A SWPPP shall be prepared and implemented by the owner or operator of each construction activity covered by this permit. The SWPPP must document the selection, design, installation, implementation and maintenance of the control measures and practices that will be used to meet the effluent limitations in Part I.B. of this permit and where applicable, the post -construction stormwater management practice requirements in Part I.C. of this permit. The SWPPP shall be prepared prior to the submittal of the NOI. The NOI shall be submitted to the Department prior to the commencement of construction activity. A copy of the completed, final NOI shall be included in the SWPPP. 2. The SWPPP shall describe the erosion and sediment control practices and where required, post -construction stormwater management practices that will be used and/or constructed to reduce the pollutants in stormwater discharges and to assure compliance with the terms and conditions of this permit. In addition, the SWPPP shall identify potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges. 3. All SWPPPs that require the post -construction stormwater management practice component shall be prepared by a qualified professional that is knowledgeable in the principles and practices of stormwater management and treatment. 4. The owner or operator must keep the SWPPP current so that it at all times accurately documents the erosion and sediment controls practices that are being used or will be used during construction, and all post -construction stormwater management practices that will be constructed on the site. At a minimum, the owner or operator shall amend the SWPPP: a. whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharges from the site; b. whenever there is a change in design, construction, or operation at the construction site that has or could have an effect on the discharge of pollutants; and c. to address issues or deficiencies identified during an inspection by the qualified inspector, the Department or other regulatory authority. 5. The Department may notify the owner or operator at any time that the 1911 (Part III.A.5) SWPPP does not meet one or more of the minimum requirements of this permit. The notification shall be in writing and identify the provisions of the SWPPP that require modification. Within fourteen (14) calendar days of such notification, or as otherwise indicated by the Department, the owner or operator shall make the required changes to the SWPPP and submit written notification to the Department that the changes have been made. If the owner or operator does not respond to the Department's comments in the specified time frame, the Department may suspend the owner's or operator's coverage under this permit or require the owner or operator to obtain coverage under an individual SPDES permit in accordance with Part II.C.4. of this permit. 6. Prior to the commencement of construction activity, the owner or operator must identify the contractor(s) and subcontractor(s) that will be responsible for installing, constructing, repairing, replacing, inspecting and maintaining the erosion and sediment control practices included in the SWPPP; and the contractor(s) and subcontractor(s) that will be responsible for constructing the post -construction stormwater management practices included in the SWPPP. The owner or operator shall have each of the contractors and subcontractors identify at least one person from their company that will be responsible for implementation of the SWPPP. This person shall be known as the trained contractor. The owner or operator shall ensure that at least one trained contractor is on site on a daily basis when soil disturbance activities are being performed. The owner or operator shall have each of the contractors and subcontractors identified above sign a copy of the following certification statement below before they commence any construction activity: "I hereby certify under penalty of law that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the terms and conditions of the most current version of the New York State Pollutant Discharge Elimination System ('SPDES") general permit for stormwater discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I am aware that there are significant penalties for submitting false information, that I do not believe to be true, including the possibility of fine and imprisonment for knowing violations" In addition to providing the certification statement above, the certification page must also identify the specific elements of the SWPPP that each contractor and subcontractor will be responsible for and include the name and title of the person providing the signature; the name and title of the 19 (Part III.A.6) trained contractor responsible for SWPPP implementation; the name, address and telephone number of the contracting firm; the address (or other identifying description) of the site; and the date the certification statement is signed. The owner or operator shall attach the certification statement(s) to the copy of the SWPPP that is maintained at the construction site. If new or additional contractors are hired to implement measures identified in the SWPPP after construction has commenced, they must also sign the certification statement and provide the information listed above. 7. For projects where the Department requests a copy of the SWPPP or inspection reports, the owner or operator shall submit the documents in both electronic (PDF only) and paper format within five (5) business days, unless otherwise notified by the Department. B. Required SWPPP Contents Erosion and sediment control component -All SWPPPs prepared pursuant to this permit shall include erosion and sediment control practices designed in conformance with the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. Where erosion and sediment control practices are not designed in conformance with the design criteria included in the technical standard, the owner or operator must demonstrate equivalence to the technical standard. At a minimum, the erosion and sediment control component of the SWPPP shall include the following: a. Background information about the scope of the project, including the location, type and size of project; b. A site map/construction drawing(s) for the project, including a general location map. At a minimum, the site map shall show the total site area; all improvements; areas of disturbance; areas that will not be disturbed; existing vegetation; on-site and adjacent off-site surface water(s); 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 20 (Part 111.13. 1A) activity at the site that results in soil disturbance; e. A description of the minimum erosion and sediment control practices to be installed or implemented for each construction activity that will result in soil disturbance. Include a schedule that identifies the timing of initial placement or implementation of each erosion and sediment control practice and the minimum time frames that each practice should remain in place or be implemented; f. A temporary and permanent soil stabilization plan that meets the requirements of this general permit and the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005, for each stage of the project, including initial land clearing and grubbing to project completion and achievement of final stabilization; g. A site map/construction drawings) 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 contractors) identified in Part III.A.6. of this permit, to ensure continuous and effective operation of the erosion and sediment control practices. The maintenance inspection schedule shall be in accordance with the requirements in the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005; j. A description of the pollution prevention measures that will be used to control litter, construction chemicals and construction debris from becoming a pollutant source in the stormwater discharges; k. A description and location of any stormwater discharges associated with industrial activity other than construction at the site, including, bul not limited to, stormwater discharges from asphalt plants and concrete plants located on the construction site; and I. Identification of any elements of the design that are not in conformance with the design criteria in the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, dated August 2005. Include the reason for the deviation or alternative design 21 (Part III.B.1.1) and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. Post -construction stormwater management practice component — The owner or operator of any construction project identified in Table 2 of Appendix B as needing post -construction stormwater management practices shall prepare a SWPPP that includes practices designed in conformance with the applicable sizing criteria in Part I.C.2.a., c. or d. of this permit and the performance criteria in the technical standard, New York State Stormwater Management Design Manual dated January 2015 Where post -construction stormwater management practices are not designed in conformance with the performance criteria in the technical standard, the owner or operator must include in the SWPPP the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. The post -construction stormwater management practice component of the SWPPP shall include the following: i. Identification of all post -construction stormwater management practices to be constructed as part of the project. Include the dimensions, material specifications and installation details for each post -construction stormwater management practice; b. A site map/construction drawings) showing the specific location and size of each post -construction stormwater management practice; c. A stormwater Modeling and Analysis Report that includes: (i) Maps) showing pre -development conditions, including watershed/subcatchments boundaries, flow paths/routing, and design points; Maps) 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 22 (Part 111.13.2.6v) that each post -construction stormwater management practice has been designed in conformance with the sizing criteria included in the Design Manual; (v) Identification of any sizing criteria that is not required based on the requirements included in Part I.C. of this permit; and (vi) Identification of any elements of the design that are not in conformance with the performance criteria in the Design Manual. Include the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the Design Manual; d. Soil testing results and locations (test pits, borings); e. Infiltration test results, when required; and f. An operations and maintenance plan that includes inspection and maintenance schedules and actions to ensure continuous and effective operation of each post -construction stormwater management practice. The plan shall identify the entity that will be responsible for the long term operation and maintenance of each practice. 3. Enhanced Phosphorus Removal Standards - All construction projects identified in Table 2 of Appendix B that are located in the watersheds identified in Appendix C shall prepare a SWPPP that includes post - construction stormwater management practices designed in conformance with the applicable sizing criteria in Part I.C.2. b., c. or d. of this permit and the performance criteria, Enhanced Phosphorus Removal Standards included in the Design Manual. At a minimum, the post -construction stormwater management practice component of the SWPPP shall include items 2.a - 2.f. above. C. Required SWPPP Components by Project Type Unless otherwise notified by the Department, owners or operators of construction activities identified in Table 1 of Appendix B are required to prepare a SWPPP that only includes erosion and sediment control practices designed in conformance with Part 111,121.1 of this permit. Owners oroperators 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 111.13.2 or 3 of this permit. 23 (Part IV) Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS A. General Construction Site Inspection and Maintenance Requirements 1. The owner or operator must ensure that all erosion and sediment control practices (including pollution prevention measures) and all post - construction stormwater management practices identified in the SWPPP are inspected and maintained in accordance with Part IV.B. and C. of this permit. 2. The terms of this permit shall not be construed to prohibit the State of New York from exercising any authority pursuant to the ECL, common law or federal law, or prohibit New York State from taking any measures, whether civil or criminal, to prevent violations of the laws of the State of New York, or protect the public health and safety and/or the environment. B. Contractor Maintenance Inspection Requirements The owner or operator of each construction activity identified in Tables 1 and 2 of Appendix B shall have a trained contractor inspect the erosion and sediment control practices and pollution prevention measures being implemented within the active work area daily to ensure that they are being maintained in effective operating condition at all times. If deficiencies are identified, the contractor shall begin implementing corrective actions within one business day and shall complete the corrective actions in a reasonable time frame. For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the trained contractor can stop conducting the maintenance inspections. The trained contractor shall begin conducting the maintenance inspections in accordance with Part IV.13.1. of this permit as soon as soil disturbance activities resume. 3. For construction sites where soil disturbance activities have been shut down with partial project completion, the trained contractor can stop conducting the maintenance inspections if all areas disturbed as of the project shutdown date have achieved final stabilization and all post -construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. C. Qualified Inspector Inspection Requirements 24 (Part IV.C) The owner oroperatorshall have a qualified inspectorconduct 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), - 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]. A qualified inspector shall conduct site inspections for all construction activities identified in Tables 1 and 2 of Appendix B, with the exception of: a. the construction of a single family residential subdivision with 25% or less impervious cover at total site build -out that involves a soil disturbance of one (1) or more acres of land but less than five (5) acres and is not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix E; b. the construction of a single family home that involves a soil disturbance of one (1) or more acres of land but less than five (5) acres and is not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix E; c. construction on agricultural property that involves a soil disturbance of one (1) or more acres of land but less than five (5) acres; and d. construction activities located in the watersheds identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. Unless otherwise notified by the Department, the qualified inspector shall conduct site inspections in accordance with the following timetable: a. For construction sites where soil disturbance activities are on-going, the qualified inspector shall conduct a site inspection at least once every seven (7) calendar days. b. For construction sites where soil disturbance activities are on-going and 25 (Part IV.C.2.b) the owner or operator has received authorization in accordance with Part II.C.3 to disturb greater than five (5) acres of soil at any one time, the qualified inspector shall conduct at 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. 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.AA of this permit. e. For construction sites that directly discharge to one of the 303(d) segments listed in Appendix E or is located in one of the watersheds listed in Appendix C, the qualified inspector shall conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections shall 26 (PartIV.C.2.e) be separated by a minimum of two (2) full calendar days. 3. At a minimum, the qualified inspectorshall inspect all erosion and sediment control practices and pollution prevention measures to ensure integrity and effectiveness, all post -construction stormwater management practices under construction to ensure that they are constructed in conformance with the SWPPP, all areas of disturbance that have not achieved final stabilization, all points of discharge to natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site, and all points of discharge from the construction site. 4. The qualified inspector shall prepare an inspection report subsequent to each and every inspection. At a minimum, the inspection report shall include and/or address the following: a. Date and time of inspection; b. Name and title of persons) performing inspection; c. A description of the weather and soil conditions (e.g. dry, wet, saturated) at the time of the inspection; d. A description of the condition of the runoff at all points of discharge from the construction site. This shall include identification of any discharges of sediment from the construction site. Include discharges from conveyance systems (i.e. pipes, culverts, ditches, etc.) and overland flow; e. A description of the condition of all natural surface waterbodies located within, or immediately adjacent to, the property boundaries of the construction site which receive runoff from disturbed areas. This shall include identification of any discharges of sediment to the surface waterbody; f. Identification of all erosion and sediment control practices and pollution prevention measures that need repair or maintenance; g. Identification of all erosion and sediment control practices and pollution prevention measures that were not installed properly or are not functioning as designed and need to be reinstalled or replaced; h. Description and sketch of areas with active soil disturbance activity, areas that have been disturbed but are inactive at the time of the inspection, and areas that have been stabilized (temporary and/or final) since the last inspection; 27 (Part IV.C.4.i) 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; Corrective actions) 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 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. All inspection reports shall be signed by the qualified inspector. Pursuant to Part II.C.2. of this permit, the inspection reports shall be maintained on site with the SWPPP. Part V. TERMINATION OF PERMIT COVERAGE A. Termination of Permit Coverage 1. An owner or operator that is eligible to terminate coverage under this permit must submit a completed NOT form to the address in Part II.A.1 of this permit. The NOT form shall be one which is associated with this permit, signed in accordance with Part VII.H of this permit. (Part V.A.2) 2. An owner or operator may terminate coverage when one or more the following conditions have been met: Iva project completion -All construction activity idened in the SWPPP has been completed; and all areas of disturbance have achieved final stabilization; and all temporary, structural erosion and sediment control measures have been removed; and all post -construction stormwater management practices have been constructed in conformance with the SWPPP and are operational; b. Planned shutdown with partial project completion -All soil disturbance activities have ceased; and all areas disturbed as of the project shutdown date have achieved final stabilization; and all temporary, structural erosion and sediment control measures have been removed; and all post - construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational; c. A new owner or operator has obtained coverage under this permit in accordance with Part ILE, 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 quanned 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. (Part V.A.S) 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 practices) and any right- of-way(s) needed to maintain such practice(s) have been deeded to the municipality in which the practice(s) is located, b. an executed maintenance agreement is in place with the municipality that will maintain the post -construction stormwater management practice(s), c. for post -construction stormwater management practices that are privately owned, the owner or operator has a mechanism in place that requires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan, such as a deed covenant in the owner or operator's deed of record, d. for post -construction stormwater management practices that are owned by a public or private institution (e.g. school, university, hospital), government agency or authority, or public utility; the owner or operator has policy and procedures in place that ensures operation and maintenance of the practices in accordance with the operation and maintenance plan. 1�1ii�/A7�Zd:illi•[�L\�177���►��[�7�[�7�:7x�i�7��? 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 submitted in accordance with Part V. of this general permit. B. Addresses With the exception of the NOI, NOT, and MS4 SWPPP Acceptance form (which must be submitted to the address referenced in Part II.A.1 of this permit), all written correspondence requested by the Department, including individual permit applications, shall be sent to the address of the appropriate DOW Water (SPDES) Program contact at the Regional Office listed in Appendix F. 30 (Part VII) Part VII. STANDARD PERMIT CONDITIONS A. Duty to Comply The owner or operator it comply with all conditions of this permit. All contractors and subcontractors associated with the project must comply with the terms of the SWPPP. Any non-compliance with this permit constitutes a violation of the Clean Water Act (CWA) and the ECL and is grounds for an enforcement action against the owner or operator and/or the contractor/subcontractor; permit revocation, suspension or modification; or denial of a permit renewal application. Upon a finding of significant non-compliance with this permit or the applicable SWPPP, the Department may order an immediate stop to all construction activity at the site until the non-compliance is remedied. The stop work order shall be in writing, shall describe the non-compliance in detail, and shall be sent to the owner or operator. If any human remains or archaeological remains are encountered during excavation, the owner or operator must immediately cease, or cause to cease, all construction activity in the area of the remains and notify the appropriate Regional Water Engineer (RWE). Construction activity shall not resume until written permission to do so has been received from the RWE. B. Continuation of the Expired General Permit This permit expires five (5) years from the effective date. If a new general permit is not issued prior to the expiration of this general permit, an owner or operator with coverage under this permit may continue to operate and discharge in accordance with the terms and conditions of this general permit, if it is extended pursuant to the State Administrative Procedure Act and 6 NYCRR Part 621, until a new general permit is issued. C. Enforcement Failure of the owner or operator, its contractors, subcontractors, agents and/or assigns to strictly adhere to any of the permit requirements contained herein shall constitute a violation of this permit. There are substantial criminal, civil, and administrative penalties associated with violating the provisions of this permit. Fines of up to $37,500 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. 31 (Part VILE) E. Duty to Mitigate The owner or operator and its contractors and subcontractors shall take all reasonable steps to minimize or prevent any discharge in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. F. Duty to Provide Information The owner or operatorshallfurnlsh to the Department, within a reasonable specified time period of a written request, all documentation necessary to demonstrate eligibility and any information to determine compliance with this permit or to determine whether cause exists for modifying or revoking this permit, or suspending or denying coverage under this permit, in accordance with the terms and conditions of this permit. The NOI, SWPPP and inspection reports required by this permit are public documents that the owner or operator must make available for review and copying by any person within five (5) business days of the owner or operator receiving a written request by any such person to review these documents. Copying of documents will be done at the requester's expense. G. Other Information When the owner or operator becomes aware that they failed to submit any relevant facts, or submitted incorrect information in the NOI or in any of the documents required by this permit , or have made substantive revisions to the SWPPP (e.g, the scope of the project changes significantly, the type of post -construction stormwater management practice(s) changes, there is a reduction in the sizing of the post - construction stormwater management practice, or there is an increase in the disturbance area or impervious area), which were not reflected in the original NOI submitted to the Department, they shall promptly submit such facts or information to the Department using the contact information in Part 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: (i) a president, secretary, treasurer, or vice-president of the 32 (Part VII.H.1.a.i) corporation in charge of a principal business function, or any other person who performs similar policy or decision-making functions for the corporation; or (ii) the manager of one or more manufacturing, production or operating facilities, provided the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship these forms shall be signed by a general partner or the proprietor, respectively; or c. 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, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named 33 (Part VII.H.2.b) individual or any individual occupying a named position) and, 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. The MS4 SWPPP Acceptance form shall be signed by the principal executive officer or ranking elected official from the regulated, traditional land use control MS4, or by a duly authorized representative of that person. It shall constitute a permit violation if an incorrect and/or improper signatory authorizes any required forms, SWPPP and/or inspection reports. I. Property Rights The issuance of this permit does not convey any property rights of any sort, nor any exclusive privileges, nor does it authorize any injury to private property nor any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations. Owners or operators must obtain any applicable conveyances, easements, licenses and/or access to real property prior to commencing construction activity. J. Severability The provisions of this permit are severable, and if any provision of this permit, or the application of any provision of this permit to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this permit shall not be affected thereby. K. Requirement to Obtain Coverage Under an Alternative Permit The Depart ment may require any owner or operator authorized by this permit to apply for and/or obtain either an individual SPDES permit or another SPDES general permit. When the Department requires any discharger authorized by a general permit to apply for an individual SPDES permit, it shall notify the discharger in writing that a permit application is required. This notice shall include a brief statement of the reasons for this decision, an application form, a statement setting a time frame for the owner or operator to file the application for an individual SPDES permit, and a deadline, not sooner than 180 days from owner or operator receipt of the notification letter, whereby the authorization to 34 (Part VI IX.1) discharge under this general permit shall be terminated. Applications must be submitted to the appropriate Permit Administrator at the Regional Office. The Department may grant additional time upon demonstration, to the satisfaction of the Department, that additional time to apply for an alternative authorization is necessary or where the Department has not provided a permit determination in accordance with Part 621 of this Title. 2. When an individual SPDES permit is issued to a discharger authorized to discharge under a general SPDES permit for the same discharge(s), the general permit authorization for outfalls authorized under the individual SPDES permit is automatically terminated on the effective date of the individual permit unless termination is earlier in accordance with 6 NYCRR Part 750, L. Proper Operation and Maintenance The owner or operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the owner or operator to achieve compliance with the conditions of this permit and with the requirements of the SWPPP. M. Inspection and Entry The owner or operator shall allow an authorized representative of the Department, EPA, applicable county health department, or, in the case of a construction site which discharges through an MS4, an authorized representative of the MS4 receiving the discharge, upon the presentation of credentials and other documents as may be required by law, to: 1. Enter upon the owner's or operator's premises where a regulated facility or activity is located or conducted or where records must be kept under the conditions of this permit; 2. Have access to and copy at reasonable times, any records that must be kept under the conditions of this permit; and 3. Inspect at reasonable times any facilities or equipment (including monitoring and control equipment), practices or operations regulated or required by this permit. 4. Sample or monitor at reasonable times, for purposes of assuring permit compliance or as otherwise authorized by the Act or ECL, any substances or parameters at any location. 35 (Part VII.N) N. Permit Actions This permit may, at any time, be modified, suspended, revoked, or renewed by the Department in accordance with 6 NYCRR Part 621. The filing of a request by the owneroroperator 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 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. R. Other Permits Nothing in this permit relieves the owner or operator from a requirement to obtain any other permits required by law. APPENDIX A Definitions Alter Hydrology from Pre to Post -Development Conditions - means the post - development peak flow rate(s) has increased by more than 5% of the pre -developed condition for the design storm of interest (e.g. 10 yr and 100 yr). Combined Sewer - means a sewer that is designed to collect and convey both "sewage" and "stormwater" I Commence (Commencement of) Construction Activities -means the initial disturbance of soils associated with clearing, grading or excavation activities; or other construction related activities that disturb or expose soils such as demolition, stockpiling of fill material, and the initial installation of erosion and sediment control practices required in the SWPPP. See definition for "Construction Activity(ies)" also. Construction Activity(les) - means any clearing, grading, excavation, filling, demolition or stockpiling activities that result in soil disturbance. Clearing activities can include, but are not limited to, logging equipment operation, the cutting and skidding of trees, stump removal and/or brush root removal. Construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility. Direct Discharge (to a specific surface waterbody) - means that runoff flows from a construction site by overland flow and the first point of discharge is the specific surface waterbody, or runoff flows from a construction site to a separate storm sewer system and the first point of discharge from the separate storm sewer system is the specific surface waterbody. Discharge(s) - means any addition of any pollutant to waters of the State through an outlet or point source. Environmental Conservation Law (ECL) - means chapter 43-B of the Consolidated Laws of the State of New York, entitled the Environmental Conservation Law. Equivalent (Equivalence) — means that the practice or measure meets all the performance, longevity, maintenance, and safety objectives of the technical standard and will provide an equal or greater degree of water quality protection. Final Stabilization - means that all soil disturbance activities have ceased and a uniform, perennial vegetative cover with a density of eighty (80) percent over the entire pervious surface has been established; or other equivalent stabilization measures, such as permanent landscape mulches, rock rip -rap or washed/crushed stone have been applied 37 on all disturbed areas that are not covered by permanent structures, concrete or pavement. General SPDES permit - means a SPDES permit issued pursuant to 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. 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, M ditches, man-made channels, or storm drains): (i) Owned or operated by a State, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the CWA that discharges to surface waters of the State; (ii) Designed or used for collecting or conveying stormwater; (iii) Which is not a combined sewer, and (iv) Which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2. National Pollutant Discharge Elimination System (NPDES) - means the national system for the issuance of wastewater and stormwater permits under the Federal Water Pollution Control Act (Clean Water Act). New Development — means any land disturbance that does meet the definition of Redevelopment Activity included in this appendix. NOI Acknowledgment Letter - means the letter that the Department sends to an owner or operator to acknowledge the Department's receipt and acceptance of a complete Notice of Intent. This letter documents the owner's or operator's authorization to discharge in accordance with the general permit for stormwater discharges from construction activity. Owner or Operator - means the person, persons or legal entity which owns or leases the property on which the construction activity is occurring; and/or an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications. Performance Criteria — means the design criteria listed under the "Required Elements" sections in Chapters 5, 6 and 10 of the technical standard, New York State Stormwater Management Design Manual, dated January 2015. It does not include the Sizing Criteria (i.e. WQv, RRv, Cpv, Qp and Qf ) in Part I.C.2, of the permit. Pollutant - means dredged spoil, filter backwash, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand and industrial, municipal, agricultural waste and ballast discharged into water; which may cause or might reasonably be expected to cause pollution of the waters of the state in contravention of the standards or guidance values adopted as provided in 6 NYCRR Parts 700 et seq . Qualified Inspector - means a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or other Department endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. Note: Inspections of any post -construction stormwater management practices that include structural components, such as a dam for an impoundment, shall be performed by a licensed Professional Engineer. Qualified Professional - means a person that is knowledgeable in the principles and practices of stormwater management and treatment, such as a licensed Professional Engineer, Registered Landscape Architect or other Department endorsed individual(s). Individuals preparing SWPPPs that require the post -construction stormwater management practice component must have an understanding of the principles of hydrology, water quality management practice design, water quantity control design, and, in many cases, the principles of hydraulics. All components of the SWPPP that involve the practice of engineering, as defined by the NYS Education Law (see Article 145), shall be prepared by, or under the direct supervision of, a professional engineer licensed to practice in the State of New York.. Redevelopment Activity(ies) —means the disturbance and reconstruction of existing impervious area, including impervious areas that were removed from a project site within five (5) years of preliminary project plan submission to the local government (i.e. site plan, subdivision, etc.). Regulated, Traditional Land Use Control MS4 - means a city, town or village with land use control authority that is required to gain coverage under New York State DEC's SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (MS4s). Em Routine Maintenance Activity - means construction activity that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility, including, but not limited to: - Re -grading of gravel roads or parking lots, - Stream bank restoration projects (does not include the placement of spoil material), - Cleaning and shaping of existing roadside ditches and culverts that maintains the approximate original line and grade, and hydraulic capacity of the ditch, - Cleaning and shaping of existing roadside ditches that does not maintain the approximate original grade, hydraulic capacity and purpose of the ditch if the changes to the line and grade, hydraulic capacity or purpose of the ditch are installed to improve water quality and quantity controls (e.g, installing grass lined ditch), - Placement of aggregate shoulder backing that makes the transition between the road shoulder and the ditch or embankment, - Full depth milling and filling of existing asphalt pavements, replacement of concrete pavement slabs, and similar work that does not expose soil or disturb the bottom six (6) inches of subbase material, - Long-term use of equipment storage areas at or near highway maintenance facilities, - Removal of sediment from the edge of the highway to restore a previously existing sheet -flow drainage connection from the highway surface to the highway ditch or embankment, - Existing use of Canal Corp owned upland disposal sites for the canal, and - Replacement of curbs, gutters, sidewalks and guide rail posts. Site limitations —means site conditions that prevent the use of an infiltration technique and or infiltration of the total WQv. Typical site limitations include: seasonal high groundwater, shallow depth to bedrock, and soils with an infiltration rate less than 0.5 inches/hour. The existence of site limitations shall be confirmed and documented using actual field testing (i.e. test pits, soil borings, and infiltration test) or using information from the most current United States Department of Agriculture (USDA) Soil Survey for the County where the project is located. Sizing Criteria — means the criteria included in Part I.C.2 of the permit that are used to size post -construction stormwater management control practices. The criteria include; Water Quality Volume (WQv), Runoff Reduction Volume (RRv), Channel Protection Volume (Cpv), Overbank Flood (Qp), and Extreme Flood (Qf). State Pollutant Discharge Elimination System (SPDES) - means the system established pursuant to Article 17 of the ECL and 6 NYCRR Part 750 for issuance of permits authorizing discharges to the waters of the state. Steep Slope —means land area with a Soil Slope Phase that is identified as an E or F, or 41 the map unit name is inclusive of 25% or greater slope, on the United States Department of Agriculture ("USDA") Soil Survey for the County where the disturbance will occur. Surface Waters of the State - shall be construed to include lakes, bays, sounds, ponds, impounding reservoirs, springs, rivers, streams, creeks, estuaries, marshes, inlets, canals, the Atlantic ocean within the territorial seas of the state of New York and all other bodies of surface water, natural or artificial, inland or coastal, fresh or salt, public or private (except those private waters that do not combine or effect a junction with natural surface waters), which are wholly or partially within or bordering the state or within its jurisdiction. Waters of the state are further defined in 6 NYCRR Parts 800 to 941. Temporarily Ceased — means that an existing disturbed area will not be disturbed again within 14 calendar days of the previous soil disturbance. Temporary Stabilization - means that exposed soil has been covered with material(s) as set forth in the technical standard, New York Standards and Specifications for Erosion and Sediment Control, to prevent the exposed soil from eroding. The materials can include, but are not limited to, mulch, seed and mulch, and erosion control mats (e.g. jute twisted yarn, excelsior wood fiber mats). Total Maximum Daily Loads (TMDLs) - A TMDL is the sum of the allowable loads of a single pollutant from all contributing point and nonpoint sources. It is a calculation of the maximum amount of a pollutant that a waterbody can receive on a daily basis and still meet 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 training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the trained contractor shall receive four (4) hours of training every three (3) years. It can also mean an employee from the contracting (construction) company, identified in Part III.A.6., that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity). The trained contractor is responsible for the day to day implementation of the SWPPP. Uniform Procedures Act (UPA) Permit - means a permit required under 6 NYCRR Part Cf: 621 of the Environmental Conservation Law (ECL), Article 70. Water Quality Standard - means such measures of purity or quality for any waters in relation to their reasonable and necessary use as promulgated in 6 NYCRR Part 700 et seq. 43 APPENDIX B Required SWPPP Components by Project Type Table 1 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS The following construction activities that involve soil disturbances of one (1) or more acres of land, but less than five (5) acres: • Single family home not located in one of the watersheds listed in Appendix C or not directly discharging to one of the 303(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 of one (1) or more acres of land: Installation of underground, linear utilities; such as gas lines, fiber-optic cable, cable TV electric, telephone, sewer mains, and water mains Environmental enhancement projects, such as wetland mitigation projects, stormwater retrofits and stream restoration projects Bike paths and trails Sidewalk construction projects that are not part of a road/ highway construction or reconstruction project Slope stabilization projects Slope flattening that changes the grade of the site, but does not significantly change the runoff characteristics Spoil areas that will be covered with vegetation .and clearing and grading for the purposes of creating vegetated open space (i.e. recreational parks, lawns, meadows, fields), excluding projects that afterhydrology from pre to post development conditions Athletic fields (natural grass) that do not include the construction or reconstruction of impervious area and do not alter hydrology from pre to post development conditions Demolition project where vegetation will be established and no redevelopment is planned Overhead electric transmission line project that does not include the construction of permanent access roads or parking areas surfaced with impervious cover Structural practices as identified in Table II in the "Agricultural Management Practices Catalog for Nonpoint Source Pollution in New York State", excluding projects that involve soil disturbances of less than five acres and construction activities that include the construction or reconstruction of impervious area The following construction activities that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land: All construction activities located in the watersheds identified in Appendix D that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. 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 residential subdivisions located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d) segments listed in Appendix E • Single family residential subdivisions that involve soil disturbances of between one (1) and five (5) acres of land with greater than 25% impervious cover at total site build -out • Single family residential subdivisions that involve soil disturbances of five (5) or more acres of land, and single family residential subdivisions that involve soil disturbances of less than five (5) acres that are part of a larger common plan of development or sale that will ultimately disturb five or more acres of land • Multi -family residential developments; includes townhomes, condominiums, senior housing complexes, apartment complexes, and mobile home parks • Airports • Amusement parks • Campgrounds • Cemeteries that include the construction or reconstruction of impervious area (>5% of disturbed area) or alter the hydrology from pre to post development conditions • Commercial developments • Churches and other places of worship • Construction of a barn or other agricultural building(e.g. silo) and structural practices as identified in Table II in the "Agricultural Management Practices Catalog for Nonpoint Source Pollution in New York State" that include the construction or reconstruction of impervious area, excluding projects that involve soil disturbances of less than five acres. • Golf courses • Institutional, includes hospitals, prisons, schools and colleges • Industrial facilities, includes industrial parks • Landfills • Municipal facilities; includes highway garages, transfer stations, office buildings, POTW's and water treatment plants • Office complexes • Sports complexes • Racetracks, includes racetracks with earthen (dirt) surface • Road construction or reconstruction • Parking lot construction or reconstruction • Athletic fields (natural grass) that include the construction or reconstruction of impervious area (>5% of disturbed area) or alter the hydrology from pre to post development conditions • Athletic fields with artificial turf • Permanent access roads, parking areas, substations, compressor stations and well drilling pads, surfaced with impervious cover, and constructed as part of an over -head electric transmission line project , wind -power project, cell tower project, oil or gas well drilling project, sewer or water main project or other linear utility project • All other construction activities that include the construction or reconstruction of impervious area or alter the hydrology from pre to post development conditions, and are not listed in Table 1 _ 45 APPENDIX C Watersheds Where Enhanced Phosphorus Removal Standards Are Required Watersheds where owners or operators of construction activities identified in Table 2 of Appendix B must prepare a SWPPP that includes post -construction stormwater management practices designed in conformance with the Enhanced Phosphorus Removal Standards included in the technical standard, New York State Stormwater Management Design Manual ("Design Manual'). • Entire New York City Watershed located east of the Hudson River -Figure 1 • Onondaga Lake Watershed = Figure 2 • Greenwood Lake Watershed =Figure 3 • Oscawana Lake Watershed — Figure 4 • Kinderhook Lake Watershed — Figure 5 m Figure 1 = New York Citv Watershed East of the Hudson 47 atershed Fiqure 2 = Onondaga Lake Watershed VAN BUREN u ELBRIDG CLAY OL SALINA ONONDAGA OTISCO � Ph sphorus Wate shed Cf'3 LAFA CICERO EAST LSEY DEWITT TULLY ' C� EBLE Fiaure 3 - Greenwood Lake Watershed GREENWOOD LAKE Phosphorus Watershed Figure 4 = Oscawana Lake Watershed PHILIPSTOWN Phosphorus Watershed 50 VALLEY KENT CARMEL Figure 5: Kinderhook Lake Watershed EAST GPccwim icu SCH KINDERH f7nG7�1 O Town, Yllege, or Cily boundary for New Yod< Slate Kinderhook Lake Walerahetl 51 APPENDIX D Watersheds where owners or operators of construction activities that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land must obtain coverage under this permit. Entire New York City Watershed that is located east of the Hudson River = See Figure 1 in Appendix C 11 52 APPENDIX E List of 303(d) segments impaired by pollutants related to construction activity (e.g. silt, sediment or nutrients). Owners or operators of single family home and single family residential subdivisions with 25% or less total impervious cover at total site build -out that involve soil disturbances of one or more acres of land, but less than 5 acres, and directly discharge to one of the listed segments below shall prepare a SWPPP that includes post -construction stormwater management practices designed in conformance with the New York State Stormwater Management Design Manual ("Design Manual'), dated January 2015. COUNTY WATERBODY COUNTY WATERBODY Albany Ann Lee (Shakers) Pond, Stump Pond Greene Sleepy Hollow Lake Albany Basic Creek Reservoir Herkimer Steele Creek Cribs Allegheny Amity Lake, Saunders Pond Kings Hendrix Creek Bronx Van Cortlandt Lake Lewis Mill Creek/South Branch and tribs Broome Whitney Point Lake/Reservoir Livingston Conesus Lake Broome Fly Pond, Deer Lake Livingston Jaycox Creek and tribs Broome Minor Tribs to Lower Susquehanna Livingston Mill Creek and minor tribs (north) Livingston Bradner Creek and bibs Cattaraugus Allegheny River/Reservoir Livingston Christie Creek and tribs Cattaraugus Case Lake Monroe Lake Ontario Shoreline, Western Cattaraugus Linlyco/Club Pond Monroe Mill Creek/Blue Pond Outlet and tribs Cayuga Duck Lake Monroe Rochester Embayment- East Chautauqua Chautauqua Lake, North Monroe Rochester Embayment- West Chautauqua Chautauqua Lake, South Monroe Unnamed Trib to Honeoye Creek Chautauqua Bear Lake Monroe Genesee River, Lower, Main Stem Chautauqua Chadakoin River and tribs Monroe Genesee River, Middle, Main Stem Chautauqua Lower Cassadaga Lake Monroe Black Creek, Lower, and minor tribs Chautauqua Middle Cassadaga Lake Monroe Buck Pond Chautauqua Findley Lake Monroe Long Pond Clinton Great Chazy River, Lower, Main Stem Monroe Cranberry Pond Columbia Kinderhook Lake Monroe Mill Creek and tribs Columbia Robinson Pond Monroe Shipbuilders Creek and cribs Dutchess Hillside Lake Monroe Minor tribs to Irondequoit Bay Dutchess Wappinger Lakes Monroe Thomas Creek/White Brook and tribs Dutchess Fall Kill and tribs Nassau Glen Cove Creek, Lower, and tribs Erie Green Lake Nassau LI Tribs (fresh) to East Bay Erie Scajaquada Creek, Lower, and tribs Nassau East Meadow Brook, Upper, and tribs Erie Scajaquada Creek, Middle, and tribs Nassau Hempstead Bay Erie Scajaquada Creek, Upper, and tribs Nassau Hempstead Lake Erie Rush Creek and tribs Nassau Grant Park Pond Erie Ellicott Creek, Lower, and tribs Nassau Beaver Lake Erie Beeman Creek and tribs Nassau Camaans Pond Erie Murder Creek, Lower, and tribs Nassau Halls Pond Erie South Branch Smoke Cr, Lower, and Nassau LI Tidal Tribs to Hempstead Bay tribs Nassau Massapequa Creek and tribs Erie Little Sister Creek, Lower, and tribs Nassau Reynolds Channel, east Essex Lake George (primary county: Warren) Nassau Reynolds Channel, west Genesee Black Creek, Upper, and minor tribs Nassau Silver Lake, Lofts Pond Genesee Tonawanda Creek, Middle, Main Stem Nassau Woodmere Channel Genesee Oak Orchard Creek, Upper, and tribs Niagara Hyde Park Lake Genesee Bowen Brook and tribs Niagara Lake Ontario Shoreline, Western Genesee Bigelow Creek and tribs Niagara Bergholtz Creek and tribs Genesee Black Creek, Middle, and minor tribs Oneida Ballou, Nail Creeks Genesee LeRoy Reservoir Onondaga Ley Creek and tribs Greene Schoharie Reservoir Onondaga Onondaga Creek, Lower and tribs 53 APPENDIX E List of 303(d) segments Impaired by pollutants related to construction activity, cont'd. COUNTY WATERBODY COUNTY WATERBODY Onondaga Onondaga Creek, Middle and tribs Suffolk Great South Bay, West Onondaga Onondaga Creek, Upp, and minor tribe Suffolk Mill and Seven Ponds Onondaga Harbor Brook, Lower, and tribs Suffolk Moriches Bay, East Onondaga Ninemile Creek, Lower, and tribs Suffolk Moriches Bay, West Onondaga Minor tribe to Onondaga Lake Suffolk Quantuck Bay Onondaga Onondaga Creek, Lower, and tribs Suffolk Shinnecock Bay (and Inlet) Ontario Honeoye Lake Sullivan Bodine, Montgomery Lakes Ontario Hemlock Lake Outlet and minor tribs Sullivan Davies Lake Ontario Great Brook and minor tribs Sullivan Pleasure Lake Orange Monhagen Brook and tribs Sullivan Swan Lake Orange Orange Lake Tompkins Cayuga Lake, Southern End Orleans Lake Ontario Shoreline, Western Tompkins Owasco Inlet, Upper, and tribs Oswego Pleasant Lake Ulster Ashokan Reservoir Oswego Lake Neatahwanta Ulster Esopus Creek, Upper, and minor Putnam Oscawana Lake tribs Putnam Palmer Lake Ulster Esopus Creek, Lower, Main Stem Putnam Lake Carmel Ulster Esopus Creek, Middle, and minor Queens Jamaica Bay, Eastern, and tribs (Queens) tribe Queens Bergen Basin Warren Lake George Queens Shellbank Basin Warren Tribs to L.George, Village of L Rensselaer Nassau Lake George Rensselaer Snyders Lake Warren Huddle/Finkle Brooks and tribs Richmond Grasmere, Arbutus and Wolfes Lakes Warren Indian Brook and tribs Rockland Congers Lake, Swartout Lake Warren Hague Brook and tribs Rockland Rockland Lake Washington Tribs to L.George, East Shr Lk Saratoga Ballston Lake George Saratoga Round Lake Washington Cossayuna Lake Saratoga Dwaas Kill and tribs Washington Wood CdChamplain Canal, minor Saratoga Tribs to Lake Lonely Cribs Saratoga Lake Lonely Wayne Port Bay Schenectady Collins Lake Wayne Marbletown Creek and tribs Schenectady Duane Lake Westchester Lake Katonah Schenectady Mariaville Lake Westchester Lake Mohegan Schoharie Engleville Pond Westchester Lake Shenorock Schoharie Summit Lake Westchester Reservoir No.1 (Lake Isle) Schuyler Cayuta Lake Westchester Saw Mill River, Middle, and tribs St. Lawrence Fish Creek and minor tribs Westchester Silver Lake St. Lawrence Black Lake Outlet/Black Lake Westchester Teatown Lake Steuben Lake Salubria Westchester Truesdale Lake Steuben Smith Pond Westchester Wallace Pond Suffolk Millers Pond Westchester Peach Lake Suffolk Mattituck (Marratooka) Pond Westchester Mamaroneck River, Lower Suffolk Tidal tribs to West Moriches Bay Westchester Mamaroneck River, Upp, and tribs Suffolk Canaan Lake Westchester Sheldrake River and tribs Suffolk Lake Ronkonkoma Westchester Blind Brook, Lower Suffolk Beaverdam Creek and tribs Westchester Blind Brook, Upper, and tribs Suffolk Big/Little Fresh Ponds Westchester Lake Lincolndale Suffolk Fresh Pond Westchester Lake Meahaugh Suffolk Great South Bay, East Wyoming Java Lake Suffolk Great South Bay. Middle Wyoming Silver Lake Note: The list above identifies those waters from the final New York State "2014 Section 303(d) List of Impaired Waters Requiring a TMDVOther Strategy', dated January 2015, that are impaired by silt, sediment or nutrients. 54 ►_mem 1� Region 2 3 LIST OF NYS DEC REGIONAL OFFICES COVERING THE FOLLOWING COUNTIES: NASSAU AND SUFFOLK BRON%, KINGS, NEW YORK, QUEENS AND RICHMOND DUTCHESS, ORANGE, PUTNAM, ROCKLAND, SDLLIVAN2 ULSTER AND WESTCHESTER 4 ALBANY, COLUMBIA, DELAWARE, GREENE, MONTGOMERY, OTSEGO, RENSSELAER, SCHENECTADY AND SCHOHARIE 5 0 CLINTON, ESSEX, FRANKLIN, FULTON, HAMILTON, SARATOGA, WARREN AND WASHINGTON HERKIMER, JEFFERSON, LEWIS, ONEIDA AND T. LAWRENCE BROOME, CAYUGA, CHENANGO, CORTLAND, MADISON, ONONDAGAI OSWEGO, TIOGA AND TOMPKINS CHEMUNG, GENESEE, LIVINGSTON, MONROE, ONTARIO, ORLEANS, SCHUYLER, SENECA, STEUBEN, WAYNE AND YATES AILEGANY, CATTARAUGUS, CHAUTAUQUA, ERIE, NIAGARA AND WYOMING DIVISION OF ENVIRONMENTAL PERMITS (DEP) PERMIT ADMINISTRATORS 50 CIRCLE ROAD STONY BROOK, NY 11790 TEL.(631)444-0365 7 HUNTERS POINT PLAZA, 4740 21 ST ST. LONG ISLAND CITY, NY 11101-5407 TEL. (718) 482-4997 27 SOUTH PUTT CORNERS ROAD NEW PALTZ, Nv 12561-1696 TEL. (845) 256-3059 1150 NORTH WESTCOTT ROAD $DHENEDTADY, NY 12306-2014 TEL.(518)357-2069 1115 STATE ROUTE 86, Po Box 296 RAV BROOK, NY 12977-0296 TEL.(518)897-1234 STATE OFFICE BUILDING 317 WASHINGTON STREET WATERTOWN, NY 13601-3787 L. (315) 785-2245 615 ERIE BLVD, WEST SYRACUSE, NY 13204-2400 TEL. (315) 426-7438 6274 EAST AVON -LIMA ROAD AVON, NY 14414-9519 TEL. (585) 226-2466 270 MICHIGAN AVENUE BUFFALO, NY 14203-2999 TEL. (716) 851-7165 55 DIVISION OF WATER (DOW) WATER (SPDESI PROGRAM_ 5O CIRCLE ROAD STONY BROOK, NY 11790.3409 TEL.(631)444-0405 1 HUNTERS POINT PLAZA, 47-40 21 ST ST, LONGISLANDCITY,NY 11101-5407 TEL. (718) 482-4933 100 HILLSIDE AVENUE, SUITE 1W WHITE PLAINS, NY 10603 TEL.(914)428-2505 1130 NORTH WESTCOTT ROAD $OHENEDTADY, NY 12306-2014 TEL. (518) 357-2045 232 GOLF COURSE ROAD WARRENSBURG, NY 12885-1172 TEL. (518) 623-1200 STATE OFFICE BUILDING 207 GENESEE STREET UTICA, NY 13501-2885 (315) 793-2654 615 ERIE BLVD, WEST SYRACUSE, NY 13204-2400 TEL. (315) 426-7500 6274 EAST AVON -LIMA RD. AVON, NY 14414-9519 TEL. (585) 226-2466 270 MICHIGAN AVE. BUFFALO, NY 14203-2999 TEL. (716) 851-7070 uot�vu�.to, juI aauvua�utvyY � su+.to,� uot�oadsu1 d XIQAI�dd d Project Title PERMIT NUMBER: NYR. PRE -CONSTRUCTION MEETING DOCUMENTS Project Name GP -0-15-002 Permit No. Name of Owner/Operator General Contractor Date of Authorization The Following Information To Be Read By All Person's Involved in The Construction of Stormwater Related Activities: Site Assessment and Inspections - a. The Owner or Operator agrees to have a Qualified Inspectors conduct an assessment of the site prior to lite commencement of construction. The Qualified Inspector shall certify in this inspection report that the appropriate erosion and sediment controls described in the SWPPP have been adequately installed or implemented to ensure overall preparedness of the site for the commencement of construction. b. 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 owner or operator can stop conducting inspections. The owner or operator shall resume inspections as soon as soil disturbance activities are reinitiated. c. For construction sites where soil disturbance activities have been shut down with partial project completion, the owner or operator 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. d. Following the commencement of construction, site inspections shall be conducted by the Qualified hnspector to ensure that erosion and sediment controls are being maintained in effective operating condition at all times. Inspections shall occur at least: (i) once every 7 calendar days for construction sites where soil disturbance activities are occurring; (ii) twice every 7 calendar days for construction sites where soil disturbance activities are occurring and the Owner/Operator has received authorization to disturb greater than five (5) acres of soil at any one time, the site is located within a TMDL watershed, or the site directly discharges to a 303(d) listed water; (iii) once every thirty (30) calendar days for construction sites where soil disturbance activities have been temporarily suspended and temporary stabilization measures have been applied to all disturbed areas; and (iv) 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 for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. GP -O -IS -002 Preconstruction Site Assessment Form Page I Project Title CF -A - e. The owner or operator shall notify the Regional Office and/or the MS4 stormwater contact person in writing prior to reducing the frequency of any inspections. The Owner/Operator shall maintain a record of all inspection reports in the site log book. The site log book shall be maintained on site and be made available to the permitting authorities upon request. Prior to the commencement of construction,' the Owner/Operator shall certify in the site log book that the SWPPP is prepared in accordance with the State's standards and meets all Federal, State and local erosion and sediment control requirements. g. Prior to filing of the Notice of Termination or the end of permit term, the Owner/Operator shall have the Qualified Inspector perform a final site inspection. The Qualified Inspector shall certify that the site has undergone final stabilization using either vegetative or structural stabilization methods and that all temporary erosion and sediment controls (such as silt fencing) not needed for long-term erosion control have been removed. �"Qualified Lrspector" means a person knowledgeable in the principles and practice of erosion and sediment controls, such as a Certified Professional in Erosion and Sediment Control (CPESC), soil scientist, licensed Professional Engineer (PE), licensed Landscape Architect, or other Department endorsed individual(s). It may also mean someone working under the direct supervision of a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), or soil scientist provided that person has training in the principles and practices of erosion and sediment control. Training means that person has received four (4) hours of training endorsed by the Department and shall receive four (4) hours of training every three (3) years after the initial training session. 2"Commencement of construction" means the initial removal of vegetation and disturbance of soils associated with clearing, grading or excavating activities or other construction activities. ;'Tinal stabilization" means that all soil disturbance activities at the site have been completed and a uniform, perennial vegetative cover with a density of eighty (80) percent over the entire pervious surface has been established, or equivalent stabilization measures (such as the use of mulches or geotextiles, rock rip -rap or washed/crushed stone) have been employed on all disturbed areas that are not covered by permanent structures, concrete or pavement. GP -0-15-002 Precmrstruction Site Assessment Form page 2 Project Title PRE -CONSTRUCTION SITE ASSESSMENT FORM Inspector Name and Title Date and Time of Inspection Qualified Inspector Qualified Inspector Signature The above signed acknowledges that, to the best ofhis/her knowledge, all information provided on the followingforms is accurate and complete. a. Notice of Intetrt, SWPPP, and Contractors' Certification: Yes No NA ❑ ❑ ❑ Has a Notice of Intent been filed with the NYS Department of Conservation? ❑ ❑ ❑ Is the SWPPP on-site? Where? ❑ ❑ ❑ Is the Plan current? What is the latest revision date? El Ll Li of all contractors involved with implementing the erosion and sediment control pot•tions of the SWPPP signed the contractor's certification? b. Resource Protection Yes No NA ❑ ❑ ❑ Are construction limits clearly flagged or fenced? Important trees and associated rooting zones, on-site septic system absorption fields, ❑ ❑ ❑ existing vegetated areas suitable for filter strips, especially in perimeter areas, etc. have been flagged for protection. ❑ ❑ ❑ Creek crossings installed prior to land -disturbing activity, including clearing and blasting. c. Surface Water Protection Yes No NA El ❑ ❑ ❑ Clean stormwater runoff has been diverted away from areas to be disturbed. El 1:1 El of water located either on site or in the vicinity of the site have been identified and ❑ ❑ Other access areas (entrances, construction routes, equipment parking areas) are stabilized protected. protected. Sediment traps and barriers are installed. ❑ immediately as work takes place with gravel or other cover. ❑ ❑ ❑ Sediment tracked onto public streets is removed or cleaned on a regular basis. ❑ Appropriate practices to protect on-site or downstream surface waters are installed. d. Stabilized Construction Entrance Yes No NA ❑ El El El temporary construction entrance to capture mud and debris from construction vehicles ❑ Silt fences are installed at appropriate spacing intervals ❑ before they enter the public highway has been installed. before ❑ ❑ ❑ Other access areas (entrances, construction routes, equipment parking areas) are stabilized ❑ Sediment traps and barriers are installed. immediately as work takes place with gravel or other cover. ❑ ❑ ❑ Sediment tracked onto public streets is removed or cleaned on a regular basis. e. Perimeter Sediment Controls Yes No NA ❑ ❑ ❑ Silt fence material and installation comply with the standard drawing and specifications. ❑ ❑ ❑ Silt fences are installed at appropriate spacing intervals ❑ ❑ ❑ Sediment/detention basin was installed ❑ ❑ ❑ Sediment traps and barriers are installed. GP -0-15-002 Preconstruction Site Assessment Form Project Name PERMIT NUMBER: Location INSPECTION REPORT H. Date and Time of Inspection Qualified Inspector (name and title) Qualified Inspector Signature The above signed acknowledges that, to the best ofhis/her knowledge, all in formation provided on the follmringforms is accurate and complete. ❑ Weekly Inspection Current Phase of Construction (if applicable): Estimated Current Total Disturbed Area: IMMEDIATE ACTION ITEMS /INSPECTION SUMMARY: It is the responsibility of the Qualified Inspector to notify the owner/operator and appropriate contractor of any corrective actions that need to be taken within one (1) business day of the completion of an inspection. It is the responsibility of the contractor (subcontractor) to begin implementing the corrective actions within one (1) business day of this notification and complete the corrective action within a reasonable time frame. If there are action items from the previous inspection which have not been addressed, so note. Per the GP -0-15-002, Digital photographs with date stamp, that clearly show the cmidition of all practices that have been identified as needing corrective actions shall be included with each inspection report. 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. Paper color copies of these digital photographs shall be attached to the inspection report, documenting the completion of the corrective action work within seven (7) calendar days of that inspection. GP -0-15-002 Construction Duration Inspections page 1 Project Name 1. GENERAL HOUSEKEEPING brcludes description ofilne n^eallier and soil conidilions (e.g. eby )ret, sato aced) during the lune of the inspection, a description of the condition of the runoffat all points of dischoge fr•oni the construction site (including identification of any discharges of sedtuents fi'onn construction site), inspection far st eanilpand tno bidity, oil andfloating substances, visible oil frint, or globules or grease, contractor prepaednessfor implementation of erosion and sediment control, impact on adjacent proper!}S and dust control. Yes No ❑ ❑ Is there immediate action required regarding General Housekeeping? Notes: 2. EXCAVATION DEWATERING Includes inspection ernsuring that clean haler• from upstream pool is being pumped to the dmrnst•eann pool, that sediment laden crater fi'onr honk area is being discharged to a sill -trapping device, and that constructed upstream berm has one foot minimum fr-eeboard. Yes No ❑ ❑ Is there immediate action required regarding Excavation Dewatering? Notes: 3. INTERCEPTOR DIKES AND SWALES /rachides inspection ensnn ing t/ml dikes and s vales are installed per P with In I Man side slopes 211: I i'or flatter, are stabilised bygeotextilefabric, seed, or mulch frith no erosion occio•ring, and that sediment -laden runoff is directed to sediment !rapping structure. Yes No ❑ ❑ Is there immediate action required regarding an Interceptor Dike or Swale? Notes: GP -0-15-002 Construction Duration Inspections Pnge 2 Project Name 4. EROSION & SEDIMENT CONTROL Includes inspection ensuring that erosion and sediment control practices are located and installed correctly, BSIPs are maintained per specifications, stockpiles are stabilized and contained, de -cratering operations prevent direct discharges to sensitive feahves, and that clearing and grading operations are divided into stages far large areas. Identification of all erosion and sediment control practices that need repair or maintenance. Yes No ❑ ❑ Is there immediate action required regarding Erosion & Sediment Control? Notes: 5. AREAS OF DISTURBANCE Includes description and sketch of areas that are disturbed at the time ofthe inspection and areas than have been stabilized (temporary and/orfrnal) since last inspection. Yes No ❑ ❑ Is there immediate action required regarding stabilizing disturbed areas? Notes: tS. STABILIZED CONSTRUCTION ENTRANCE breludes i»spection ensuring that stmne is clemn enogh to effectively remove mud from vehicles, is installed pet standards and specifications, that all traffic use the stabilized enhance to enter and lempe site, and that adequate drainage is provided to prevent ponding at entrance. Yes No ❑ ❑ is there immediate action required regarding a Stabilized Construction Entrance? Notes: GP -O -IS -002 Cwisn•uction Duration Inspections Page3 Project Name :!:yi 7. REINFORCED SILT FENCE Includes inspection ensuring that silt fence is installed on contour, IO feet fn•om toe ofslope, joints are constructed by wrapping the Iwo ends together for continuous support, steel posts installed ( ifapplicable), installed on downstream side ofslope, marinnon 6' intervals with 6x 6 inch 14 gage wire, fabric is buried mininunn of 6 inches, posts are stable, fabric is light and without rips or fu-ayed areas, and that sediment accumulation is less than 1/3 the height of the silt fence. Yes No ❑ ❑ Is there immediate action required regarding Silt Fence? Notes: 8. STONE CHECK DAM Includes inspection ensuring that stone check dam channels are without erosion (i.e., flow is not eroding soil underneath o around the structure), that check dam is in good condition (i.e., rocks have not been displaced and no permanent pools behind the structure), and that sediment accumlation is less than design capacity. Yes No ❑ ❑ Is there immediate action required regarding a Stone Check Dam? Notes: 9. FILTER FABRIC (DROP) INLET PROTECTION Irelnrdes inspection ensuring that protection is instal/ed with 2 -inch ,r 4 -inch woodfi•ame and woad posts, with nnarinuan 3 foot spacing, is buried a minimumt of 8 inches and secured to fn•anne/posts with staples at mar 8 -inch spacing, has posts with 3 -foot nuxinunn spacing between posts, has posts that are stable, fabric is light and without rips o• fn•ayed areas, and that sediment accnrmdation is within design capacity. Yes No ❑ ❑ Is there immediate action requited regarding Filter Fabric (Drop) Inlet Protection? Notes: GP -O -IS -002 Construction Dura[im+ Inspections Page 4 Project Name 10. SILTSACK© INLET PROTECTION Includes inspection ensuring that protection is installer! per manufacturers specifications and is maintainer! per pram facturers reconutendations. Yes No ❑ ❑ Is there immediate action required regarding the Inlet Protection? Notes: 11.TEMPORARY SEDIMENT TRAP htcludes inspection ensuring that outlet structure is constructed per the approved plan or droving, that geotextile fabric has been placed beneath rock•full, and that sediment accunudation is within design capacity. Yes No ❑ ❑ Is there immediate action requited regarding Temporary Sediment Traps? Notes: 12.CONCRETE WASHOUT Includes inspection ensuring that the concrete irashoul is constructed at ntaintni led per the approveaplan or chmving. Yes No ❑ ❑ Is there immediate action required regarding Concrete Washouts? Notes: CP -O -IS -002 Consh'uction Duration Inspections Pnge S Project Name 13. STORMWATER BASIN Includes h7speclion ensuring that Permanent Sta•nnrater Basins are installed per plots• and specifleatiots. Yes No ❑ ❑ Is there immediate action required regarding Stormwater Basins? Notes: 14.CURRENT PHASE OF POST -CONSTRUCTION STORMWATER PRACTICES Includes inspection of cnrrentphase ofallpost-consh uction stornnvater ntanagentent practices identification ofall construction that is not in conformance frith the STVPPP and technical standards, identify corrective action(s) than tnust be taken to install, repair, replace or maintain erosion and sediment control practices, and to correct deficiencies identified with the construction of Post -construction sto•nnvater management practice(s). Yes No ❑ ❑ Is there immediate action required regarding the current phase of post -construction stormwater management practices? Notes: ADDITIONAL NOTES /MODIFICATIONS GP -0-15-002 Construction Duration Inspections Puge 6 Infiltration Basin Maintenance Requirements Activity Schedule Inspect facility for signs of wetness or damage to structures • Note eroded areas. • If dead or dying grass on the bottom is observed, Semi-annual check to ensure that water percolates 2-3 days following storms. inspection • Note signs of petroleum hydrocarbon contamination and handle properly. • Mow and remove litter and debris. • Stabilize of eroded banks. Standard • Repair undercut and eroded areas at inflow and maintenance outflow structures. (as needed) • Disc or otherwise aerate bottom. Annual • Dethatch basin bottom. maintenance • Scrape bottom and remove sediment. Restore original cross-section and infiltration rate. 5 -year • Seed or sod to restore ground cover. maintenance Source: EPA Best Management Practices, http://water.epa.sov/polwaste/npdes/swbmp/Infiltration- Basin.cfm APPENDIX G ETOo U19 and Sediment Control Plan and Details