Loading...
SWPPP BinderJ A R R E T T E n g i n e e r s , P L L C C C i v i l & E n v i r o n m e n t a l E n g i n e e r i n g 1 2 E a s t W a s h i n g t o n S t r e e t 5 1 8 7 9 2 -2 9 0 7 G l e n s F a l l s , N Y 1 2 8 0 1 F a x 5 1 8 7 9 8 -1 8 6 4 Stormwater Management Report &NYSDEC Stormwater Pollution Prevention Plan (SWPPP) ‘Ridgewood Meadows’ Subdivision Ridge Road In the Town of Queensbury, New York SWPPP Prepared for Greenwood Builders, LLC July 2013 Introduction A 16 acre parcel East of Ridge Road is proposed to be subdivided into three large residential lots. Two of the lots would border on and access Ridge Road via a shared driveway entrance, whereas lot #3, although bordering on Ridge Road, would be accessed through a paper street connected to Stonehurst Drive. Significant USACOE wetlands are present on the parcel, although none of the wetlands are proposed for disturbance. The purpose of this Stormwater Pollution Plan (SWPPP) and Stormwater Management Plan is to doc ument compliance with NYSDEC SPDES and Town of Queensbury stormwater requirements. Development of lots will occur as market conditions dictate; no formal phasing is planned. Existing Conditions The existing parcel is comprised of 16.0± acres of undeveloped land made up mostly of grassland/meadow and wooded wetlands. The site slopes uniformly from the Northwest to Southeast dropping in elevation approximately 22’± over approximately 600’± (4%±). Bordering the parcel to the West is state route 9L (Ridge Road). To the South and East are USACOE wetlands which the site drains to. To the East and included within the limits of the parcel is an unnamed intermittent stream that is tributary to Halfway Brook. To the North the property is bordered by both existing and recently constructed homes part of the Stonehurst development. ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 2 of 9 Subsurface investigations by this office, and documentation as reported by The United States Department of Agriculture Natural Resources Conservation Service’s ‘Web Soil Survey’ documents the development areas of the lots as having predominantly “B” type soils. Groundwater ranges from 1’± to 4’± deep; greater depths were observed in the Northwest corner of the site, and shallower depths were found in the Southeast corner of the site where the wetlands are located. This was confirmed during test pits and percolation tests performed by this office. Tests results are logged on the project site plan drawings. Stormwater Management Stormwater management on the site has been provided utilizing vegetated retention areas, a vegetated swale, and a landscaped dry swale. Green infrastructure practices have been employed to comply with NYSDEC standards. In accordance with these standards/guidelines, proposed are designated areas to be maintained as a filter strip, and other areas designated for rooftop disconnect. Lot 1 employs a landscaped dry swale to promote retention and infiltration of dr iveway runoff. Lot 2 utilizes a vegetated swale with a series of check dams providing retention and subsequent infiltration of stormwater runoff from driveway. Lot 3 incorporates a series of vegetated retention areas created with bermed soil to manage runoff realized from driveway. Ultimately remaining stormwater flows resulting after passing through said treatment devices is released in a controlled manner to the wetlands. Each device or group of devices has been modeled in a separate subcatchment, to provide a more accurate depiction of stormwater management. Stormwater Planning & Green Infrastructure The NYSDEC requires site designs to follow ‘Green Infrastructure’ guidelines listed in their 2010 design manual, along with documentation as to how green inftrastructure techniques have been applied to the project. The following is such documentation: Step 1 “Site Planning”x Careful consideration was given to preservation of undisturbed areas and buffers, and a filter strip has been provided to protect the wetlands. Land clearing and grading has been kept to a minimum. All areas disturbed during construction that are not to remain impervious will receive soil restoration. Step 2 “Water Quality treatment Volume”x Calculated Water Quality Volume (WQv) has been provided in the stormwater devices. See attached stormwater device design information sheet for the initial WQv and Runoff Reduction Volume (RRv) calculations for the entire project site. ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 3 of 9 Step 3 “Runoff Reduction by Applying Green Infrastructure Techniques and SMPs with RRv capacity”x See attached Stormwater device design information sheet for applied techniques. Designated filter strip and rooftop disconnections areas have been proposed to reduce the overall contributing area. Vegetated retention areas, a vegetated swale, and a vegetated dry swale have been proposed to reduce the Contributing Volume. 100% of the WQv will be reduced using these techniques. Step 4 “Apply Standard Stormwater Management Practices to address remaining WQv”x The required Water Quality Volume (WQv) has been provided through use of Green Infrastructure Techniques. Step 5 “Apply Volume and Peak Rate Control Practices if still needed to meet requirements.x Volume & Peak Rate controls for channel protection, overbank flood control and extreme flood control for this project have been met utilizing practices noted above. See the attached existing site vs. post construction stormwater comparison chart. Runoff Calculations Stormwater conditions represented in this report are based on modeling of the site for ‘pre-development’, or existing, and ‘post-development’, or predicted future conditions. Stormwater peak flows, both rate and volume, are calculated for the 1, 10, and 100 year rain events using ‘Hydrocad’ Stormwater software which is based on TR-20 methodology. Stormwater models should be thought of as reasonable comparisons of ‘before’ and ‘after’ development, under the conditions modeled, and not a predictor of actual runoff rates under all conditions. Actual runoff rates can vary from predicted flow rates due to conditions such as rainfall patterns, soil type, vegetation patterns, soil moisture conditions, etc. which can be highly variable over time and geographic area. Pre-development Stormwater Conditions Site runoff has been modeled with drainage “subcatchments”, or sub-watersheds based on existing drainage patterns. Pre-development stormwater rates for all subcatchments have been calculated and are included in a following table. Post-Development Stormwater Conditions (Mitigated)Stormwater runoff volumes and rates leaving the site will increase after development unless provisions are taken to manage stormwater on th e site. To reduce stormwater runoff volumes and rates to conform to NYSDEC, and to minimize offs ite stormwater impacts, stormwater devices are proposed throughout the site to capture and retain stormwater. The attached calculations show that with the proposed stormwater mitigation in place, stormwater runoff leaving the site will be at or below existing conditions. See attached ‘existing’ site vs. ‘post construction’ stormwater comparison chart. ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 4 of 9 Water Quality Volume (WQv)The site, with mitigation, provides the minimum required NYSDEC “Water Quality Volume”. See stormwater device design information table. Channel Protection The site with mitigation does not provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event, but does mitigate it below pre-developed conditions. Our review of the stormwater calculations suggests that the wetland area below site development is contributing stormwater runoff to the ‘design point’, but that runoff is not easily eliminated from the calculations. A total of .084 acre-feet of runoff has b een calculated ‘pre-development’ whereas .068 acre-feet emanates from an area downslope and not associated with development. Runoff from this area is not from, nor impacted by, the site development, thus we feel design is both appropriate and meets the intention of the NYSDEC guidelines. Overbank Flood Project site with stormwater management mitigates the 10 year storm peak discharge to below the pre-development rate; therefore the site meets NYSDEC “Overbank Flood Protection” criteria. Town of Queensbury Requirements Project design has followed NYSDEC requirements as required by the Town of Queensbury. Extreme Storm Project site with stormwater management mitigates the 100 year storm peak discharge to below the pre-development rates; therefore the design meets NYSDEC requirements for rate control (NYSDEC “Extreme Storm” criteria). NYSDEC Construction Requirements Temporary Erosion & Sediment Controls During Construction The site will be most susceptible to erosion and sediment problems during the construction phase of the project. To prevent erosion during the construction phase, temporary erosion control measures will be used. Silt fences, straw bale dikes, and/or earthen/stone dams will be erected down slope of applicable construction areas to trap sediment. [Construction details for temporary and permanent stormwater and erosion control devices are appended to this report.] All disturbed areas will be seeded as dictated below and dust will be controlled on roadways using water, or other approved methods. ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 5 of 9 Site Assessment and Inspections Initial Site Assessment: The operator 1 shall have a qualified professional 2 conduct an assessment of the site prior to construction activities. The professional shall certify in a report that the appropriate erosion and sediment controls described in the SWPPP and required by Permit No. GP-0-10-001 are installed or implemented to ensure overall preparedness of the site for the commencement of construction. Inspections:Following the commencement of construction, erosion control devices shall be inspected once a week. The erosion control devices will be cleaned and repaired as necessary to insure proper operation.Following each inspection, the qualified professional shall document the following: 1.On copies of the final approved site plan, indicate the extent of all disturbed site areas and drainage pathways. Indicate site areas that are expected to undergo initial disturbance or significant site work with the next 7-day period. 2.Indicate on a site plan all areas of the site that have undergone active site work during the previous 7 days. 3.Confirm that erosion and sediment controls are located to protect undisturbed areas not under active site work. 4.Indicate all disturbed site areas that have not undergone active site work during the previous 7 days. 5.Inspect all sediment control practices and record the approximate degree of sediment accumulation as a percentage of storage volume 6.Inspect all erosion and sediment control practices and record all maintenance requirements such as verifying the integrity of the barrier or diversion system and containment systems. Identify all evidence of rill or gully erosion occurring on slopes and any loss of stabilizing vegetation or seeding/mulching. Document any excessive deposition of sediment or ponding water along barrier or diversion systems. Record the depth of sediment within containment structures, any erosion near outlet and overflow structures, and verify the ability of rock filters around perforated riser pipes to pass water. The operator shall maintain a record of all inspection reports in a site logbook, which will be made available to permitting authorities upon request. Prior to the commencement of construction, the operator shall certify in the site logbook that the sediment and erosion control practices meet the 1,2 Definitions follow at end of report ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 6 of 9 requirements of the SWPPP as well as applicable Federal, State and local erosion and sediment control requirements. The operator shall post at the site, in a pub licly accessible location, a summary of the site inspection activities on a monthly basis. Prior to filing a “Notice of Termination”, or the e nd of the permit term, the operator shall have the qualified professional perform a final site inspection. The qualified professional shall certify that the site has undergone final stabilization using either vegetative or structural stabilization methods and that all temporary erosion and sediment control practices not needed for long term stormwater control have been removed. The operator shall certify that the requirements of the SWPPP have been satisfied, within 48 hours of meeting such requirements. Site Stabilization The operator shall initiate stabilization measures as soon as practicable in portions of the site where construction activities have temporarily or permanently ceased, but in no case more than 7 days after the construction activity in that portion of the site has temporarily or permanently ceased. This requirement does not apply to the following: Where the initiation of stabilization measures by the 7th day after construction activity temporarily or permanently ceased is precluded by unforeseen snow cover or frozen ground conditions, stabilization measures shall be initiated as soon as practicable. Where construction activity on a portion of the site has temporarily ceased, and earth-disturbing activities will be resumed within twenty-one days, temporary stabilization measures need not be initiated on that portion of the site as long as erosion and sediment control practices have demonstrated their ability to prevent environmental degradation. Maintenance During construction, sediment shall be removed from sediment control devices whenever their capacity has been reduced by fifty (50) percent from the design capacity. All permanent stormwater control devices shall have any silt removed from them, and generally updated to their full function prior to ceasing cons truction activities on the site. Once construction has been completed on the site, the operator shall inspect the basins on a routine basis. If the inspection determines that more than 25% average of their functional volume/capacity has been lost due to siltation, damage, etc. the device(s) shall be cleaned and/or repaired to their intended function. ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 7 of 9 Construction Phasing & Sequencing No phasing is planned.Construction is assumed to begin in the early Fall of 2013. Pollution Prevention/Waste Storage Construction chemicals will be stored in construction trailers or off-site away from stormwater runoff. All liter and construction debris will be cleaned up after each day’s work. Contractor Acknowledgement The contractor listed below shall be responsible for all requirements listed above pertaining to Temporary Erosion Control Measures during construction. (Contractor name, address, and phone number to be filled in at the time of contract being awarded) Name: _________ Address: ________________________ ____________ Phone No. ( ___ ) – ______ The above-mentioned contractor and all subcontractors performing earth work shall read the following statement and sign below stating that they have read and understand the below certification prior to commencing any construction activities. “I hereby certify that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the terms and conditions of the New York State Pollutant Discharge Elimination System (“SPDES”) general permit for stormwater discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings.”Name of Contracting Firm: ____________ Name: ____________ Date: ______ Signature: ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 8 of 9 Name of Contracting Firm: _ Name: ______ Date: Signature: Name of Contracting Firm: Name: Date: Signature: Name of Contracting Firm: Name: Date: Signature: In addition to the above listed requirements, the contractor shall make themselves familiar with requirements outlined in Permit No GP-0-10-001. Special note shall be taken to reporting requirements, which are the responsibility of the operator listed in this permit. “Stormwater Pollution Prevention Plan ”Prepared by: J A R R E T T E n g i n e e r s , P L L C H. Thomas Jarrett, P.E. Principal ‘Ridgewood Meadows’ Subdivision July 2013 Stormwater Management Plan & Stormwater Pollution Prevention Plan Page 9 of 9 Appendices:1.Stormwater Comparison Table 2.Stormwater Design Point Information 3.Pre-Construction Conditions (PRE) 4.Pre-Construction Hydrocad Calculations (1,10, and 100 yr storm events)5.Post-Construction Conditions (POST) (with mitigation) 6.Post Construction Hydrocad Calculations (1,10, and 100 yr storm events) 7.Maintenance and Management Inspection Checklist 8.Construction Stormwater Inspection Report 9.General Stormwater Permit GP-0-10-001 10.Construction Sequencing Schedule 11. NYSDEC Notice of Intent Form 12.NYSDEC Notice of Termination Form 13. Site Plans & Details DEFINITIONS 1.Operator – person, persons or legal entity which owns or leases the property on which the construction activity is occurring. 2.Qualified Professional – a person licensed to practice engineering in New York State or a Certified Professional in Erosion and Sediment Control (CPESC). APPENDIX 1 J ARRETT Engineers, PLLC Civil Environmental Engineering Date:7/1/13 Project # JE:06-075.03 1L1L 0.110.09 Pass 0.0840.068 Pass 2.432.32 Pass 0.7470.583 Pass 5.645.61 Pass 1.4021.126 Pass 8.088.05 Pass 1.8591.518 Pass 1 YR cfs 1 0 YR cfs 1 YR af 1 0 YR cfs 10 YR af Pre-Construction Design PointsPost-Construction Design Points 10 YR af 50 YR cfs Pre vs. Post Construction Stormwater Comparsion Project Name:Ridgewood Meadows' Subdivision Client:Greenwood Builders, LLC Link:100 YR af 100 YR af Link:1 YR cfs 1 YR af 50 YR cfs 50 YR af 100 YR cfs 50 YR af 100 YR cfs 12 East Washington Street Glens Falls, NY 12801 518-792-2907 Fax 798-1864 APPENDIX 2 J ARRETT Engineers, PLLC Civil Environmental Engineering Date:6/27/13 Project # JE:06-075.03 Sub #Rv calc Rv 0.2 min P 1 2 3 0.171.0 4 0.161.0 5 0.101.0 6 0.051.0 7 0.261.0 8 0.101.0 9 0.0 10 0.0 11 0.0 12 0.0 13 0.0 14 0.0 15 0.0 16 0.0 17 0.0 18 0.0 19 0.0 20 0.0 21 0.0 22 0.0 23 0.0 24 0.0 25 0.0 Impervious Cover (sf)Water Quality Volume (WQv) not calculated - outside limits of contributing area WQv (cf)27896 1394 152 595 10559 84156 0 Totals 184555154941931 0 Project Name:Ridgewood Meadows' Subdivision Client:Greenwood Builders, LLC 1381 4224 Water Quality Volume (WQv) not calculated - outside limits of contributing area 11728 Total Area (sf)0 2112 149 318 0 11960 6383 667 50 0 38256 0 0 0 0 0 0 0 0 Stormwater Design Point #1 Information Green Infrastructure Technique (GIT)Contributing Area (sf)0 0 Identify Runoff Reduction Techniques by Area Water Quality Volume (WQv)0 0 Totals 1251044232 Contributing Impervious Area (sf)Filter Strip (total area on project)125104 0 Rooftop Disconnect (total disconnected roof area)4232 12 East Washington Street Glens Falls, NY 12801 1 518-792-2907 Fax 798-1864 J ARRETT Engineers, PLLC Civil Environmental Engineering Date:6/27/13 Project # JE:06-075.03 1845551251045945115494423211262 0.221.01092 1656B40%262 2493B20%99 3691B20%138 41047B20%209 52233B20%447 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0 0.9561981.0 491 Size Provided (cf)Soil Type min RRv (cf)Recalculated WQv after Application of Area Reduction Techniques Vegetated Retention Area Runoff Reduction Techniques (GIT) or SMP Practice Technique ID #RRv Capacity Provided % WQv allowed by practice Reduce the total WQv by application of Green Infrastructure Techniques (GIT) and SMP Rv calc Total Area (sf)Contributing Area (sf)Impervious Cover (sf)Net Impervious area Contributing Impervious Area (sf)Runoff Reduction Volume (RRv) P Min Runoff Reduction Volume (RRv) Total Area (sf)Total areas of new Impervious Cover (sf)Soil Group Factor Rv Ai Dry swale Vegetated Swale Vegetated Retention Area Vegetated Retention Area Ridgewood Meadows' Subdivision Stormwater Design Point #1 Information Project Name:Client:Greenwood Builders, LLC 184555154940.40 Total 1155 Net Design Point Area (sf)Rv 0.2 minP WQv (cf) 12 East Washington Street Glens Falls, NY 12801 2 518-792-2907 Fax 798-1864 J ARRETT Engineers, PLLC Civil Environmental Engineering Date:6/27/13 Project # JE:06-075.03 126210%26.24100 Pass 29900 Pass 313800 Pass 420900 Pass 544700 Pass 600 Pass 700 Pass 800 Pass 900 Pass 1000 Pass 1100 Pass 1200 Pass 1300 Pass 1400 Pass 1500 Pass 1600 Pass 1700 Pass 1800 Pass 1900 Pass 2000 Pass 2100 Pass 2200 Pass 2300 Pass 2400 Pass 2500 Pass 2600 Pass Stormwater Design Point #1 Information Project Name:Ridgewood Meadows' Subdivision Client:Greenwood Builders, LLC Provided Pre-treatment device size (cf)Pre-treatment Volume (By Practice)Technique ID #Is Runoff Reduction Volume (RRv) Provided ≥ Re-calculated Water Quality Volume (WQv) (After Area Reductions)?Pass WQv Required Pretreatment Requried Pre-treatment device size (cf)Volume Check Runoff Reduction Techniques (GIT) or SMP Perc ID:Design Point Acceptance Re-calculated Water Quality Volume (WQv) (After Area Reductions) vs. Runoff Reduction Volume (RRv)0 Re-calculated Water Quality Volume (WQv) (After Area Reductions):1092 Vegetated Retention Area 0 0 Runoff Reduction Volume (RRv) Provided via Volume Reductions:1155 0 0 0 Infiltration rate (in/hr)Dry swale Vegetated Swale Vegetated Retention Area Vegetated Retention Area 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12 East Washington Street Glens Falls, NY 12801 3 518-792-2907 Fax 798-1864 APPENDIX 3 APPENDIX 4 1S Ridge Rd 2S Adjacent to Ridge Rd 3S South of Stonehurst Dr 4S Northeast Corner 1R 1L Design Pt Analysis (East Property Line)Routing Diagram for 06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Subcat Reach Pond Link 06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Area Listing (all nodes)Area (acres)CNDescription (subcatchment-numbers)3.60658Meadow, non-grazed, HSG B (1S, 2S, 4S)0.15398Paved parking, HSG B (1S)13.42056Woods, Good, HSG B (2S, 3S, 4S) Type II 24-hr 1-Year Rainfall=2.20"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Ridge Rd Runoff=0.32 cfs @ 11.99 hrs, Volume=0.016 af, Depth=0.64"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 6,68698Paved parking, HSG B 6,29758Meadow, non-grazed, HSG B 12,98379Weighted Average 6,29748.50% Pervious Area 6,68651.50% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)5.2240.02000.08 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"1.34650.03005.8030.92 Parabolic Channel, W=8.00' D=1.00' Area=5.3 sf Perim=8.3'n= 0.033 Earth, grassed & winding 6.5489Total Summary for Subcatchment 2S: Adjacent to Ridge Rd Runoff=0.05 cfs @ 15.77 hrs, Volume=0.039 af, Depth=0.05"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 106,52758Meadow, non-grazed, HSG B *334,21056Woods, Good, HSG B 440,73756Weighted Average 440,737100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)16.11000.02000.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"7.92460.04300.52 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 43.97790.01400.30 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 67.91,125Total Type II 24-hr 1-Year Rainfall=2.20"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: South of Stonehurst Dr Runoff=0.02 cfs @ 15.97 hrs, Volume=0.015 af, Depth=0.05"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription *171,12456Woods, Good, HSG B 171,124100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)32.11000.01000.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"47.37100.01000.25 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 79.4810Total Summary for Subcatchment 4S: Northeast Corner Runoff=0.02 cfs @ 13.93 hrs, Volume=0.014 af, Depth=0.06"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 44,23958Meadow, non-grazed, HSG B *79,26056Woods, Good, HSG B 123,49957Weighted Average 123,499100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)18.11000.01500.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"13.32450.01500.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 8.41780.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 39.8523Total Summary for Reach 1R: Inflow Area =0.298 ac,51.50% Impervious, Inflow Depth = 0.64" for 1-Year event Inflow=0.32 cfs @ 11.99 hrs, Volume=0.016 af Outflow=0.03 cfs @ 15.28 hrs, Volume=0.016 af, Atten= 91%, Lag= 197.5 min Type II 24-hr 1-Year Rainfall=2.20"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Routing by Stor-Ind+Trans method, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Max. Velocity= 0.09 fps, Min. Travel Time= 159.6 min Avg. Velocity = 0.06 fps, Avg. Travel Time= 225.5 min Peak Storage= 280 cf @ 12.62 hrs Average Depth at Peak Storage= 0.02'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 28.99 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 836.0' Slope= 0.0108 '/'Inlet Invert= 300.00', Outlet Invert= 291.00'‡Summary for Link 1L: Design Pt Analysis (East Property Line)Inflow Area =17.180 ac,0.89% Impervious, Inflow Depth > 0.06" for 1-Year event Inflow=0.11 cfs @ 15.47 hrs, Volume=0.084 af Primary=0.11 cfs @ 15.47 hrs, Volume=0.084 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.80"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Ridge Rd Runoff=0.92 cfs @ 11.98 hrs, Volume=0.045 af, Depth=1.80"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 6,68698Paved parking, HSG B 6,29758Meadow, non-grazed, HSG B 12,98379Weighted Average 6,29748.50% Pervious Area 6,68651.50% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)5.2240.02000.08 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"1.34650.03005.8030.92 Parabolic Channel, W=8.00' D=1.00' Area=5.3 sf Perim=8.3'n= 0.033 Earth, grassed & winding 6.5489Total Summary for Subcatchment 2S: Adjacent to Ridge Rd Runoff=1.51 cfs @ 12.92 hrs, Volume=0.415 af, Depth=0.49"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 106,52758Meadow, non-grazed, HSG B *334,21056Woods, Good, HSG B 440,73756Weighted Average 440,737100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)16.11000.02000.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"7.92460.04300.52 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 43.97790.01400.30 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 67.91,125Total Type II 24-hr 10-Year Rainfall=3.80"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: South of Stonehurst Dr Runoff=0.53 cfs @ 13.11 hrs, Volume=0.161 af, Depth=0.49"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription *171,12456Woods, Good, HSG B 171,124100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)32.11000.01000.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"47.37100.01000.25 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 79.4810Total Summary for Subcatchment 4S: Northeast Corner Runoff=0.69 cfs @ 12.47 hrs, Volume=0.126 af, Depth=0.53"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 44,23958Meadow, non-grazed, HSG B *79,26056Woods, Good, HSG B 123,49957Weighted Average 123,499100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)18.11000.01500.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"13.32450.01500.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 8.41780.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 39.8523Total Summary for Reach 1R: Inflow Area =0.298 ac,51.50% Impervious, Inflow Depth = 1.80" for 10-Year event Inflow=0.92 cfs @ 11.98 hrs, Volume=0.045 af Outflow=0.16 cfs @ 13.59 hrs, Volume=0.045 af, Atten= 82%, Lag= 96.3 min Type II 24-hr 10-Year Rainfall=3.80"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Routing by Stor-Ind+Trans method, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Max. Velocity= 0.17 fps, Min. Travel Time= 82.9 min Avg. Velocity = 0.07 fps, Avg. Travel Time= 201.7 min Peak Storage= 809 cf @ 12.20 hrs Average Depth at Peak Storage= 0.05'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 28.99 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 836.0' Slope= 0.0108 '/'Inlet Invert= 300.00', Outlet Invert= 291.00'‡Summary for Link 1L: Design Pt Analysis (East Property Line)Inflow Area =17.180 ac,0.89% Impervious, Inflow Depth = 0.52" for 10-Year event Inflow=2.43 cfs @ 12.90 hrs, Volume=0.747 af Primary=2.43 cfs @ 12.90 hrs, Volume=0.747 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=5.40"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Ridge Rd Runoff=1.59 cfs @ 11.98 hrs, Volume=0.078 af, Depth=3.15"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 6,68698Paved parking, HSG B 6,29758Meadow, non-grazed, HSG B 12,98379Weighted Average 6,29748.50% Pervious Area 6,68651.50% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)5.2240.02000.08 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"1.34650.03005.8030.92 Parabolic Channel, W=8.00' D=1.00' Area=5.3 sf Perim=8.3'n= 0.033 Earth, grassed & winding 6.5489Total Summary for Subcatchment 2S: Adjacent to Ridge Rd Runoff=5.05 cfs @ 12.82 hrs, Volume=1.058 af, Depth=1.25"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 106,52758Meadow, non-grazed, HSG B *334,21056Woods, Good, HSG B 440,73756Weighted Average 440,737100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)16.11000.02000.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"7.92460.04300.52 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 43.97790.01400.30 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 67.91,125Total Type II 24-hr 100-Year Rainfall=5.40"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 3S: South of Stonehurst Dr Runoff=1.76 cfs @ 12.98 hrs, Volume=0.411 af, Depth=1.25"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription *171,12456Woods, Good, HSG B 171,124100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)32.11000.01000.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"47.37100.01000.25 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 79.4810Total Summary for Subcatchment 4S: Northeast Corner Runoff=2.27 cfs @ 12.42 hrs, Volume=0.313 af, Depth=1.32"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 44,23958Meadow, non-grazed, HSG B *79,26056Woods, Good, HSG B 123,49957Weighted Average 123,499100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)18.11000.01500.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"13.32450.01500.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 8.41780.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 39.8523Total Summary for Reach 1R: Inflow Area =0.298 ac,51.50% Impervious, Inflow Depth = 3.15" for 100-Year event Inflow=1.59 cfs @ 11.98 hrs, Volume=0.078 af Outflow=0.40 cfs @ 13.12 hrs, Volume=0.078 af, Atten= 75%, Lag= 68.6 min Type II 24-hr 100-Year Rainfall=5.40"06075.03 130621 Pre Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Routing by Stor-Ind+Trans method, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Max. Velocity= 0.24 fps, Min. Travel Time= 58.5 min Avg. Velocity = 0.07 fps, Avg. Travel Time= 186.3 min Peak Storage= 1,399 cf @ 12.14 hrs Average Depth at Peak Storage= 0.08'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 28.99 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 836.0' Slope= 0.0108 '/'Inlet Invert= 300.00', Outlet Invert= 291.00'‡Summary for Link 1L: Design Pt Analysis (East Property Line)Inflow Area =17.180 ac,0.89% Impervious, Inflow Depth = 1.30" for 100-Year event Inflow=8.08 cfs @ 12.78 hrs, Volume=1.859 af Primary=8.08 cfs @ 12.78 hrs, Volume=1.859 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs APPENDIX 5 APPENDIX 6 1S Ridge Rd North 2S Ridge Rd South 3S Lot 1 Front yard 4S Lot 2 Front yard 5aS Wetland South 5S Wetland South 6S Wetland Northeast 7S Lot 3 Driveway 8S Lot 3 House 9S East of Lot 3 Driveway 2R Flow Thru Subcatchment #2 3R Flow Thru Wetland 5R Flow Thru Wetland 7R Flow Thru Wetland 1R CB Culvert Under Common Driveway 3P Dry Swale 4aP Vegetated Swale 4bP Vegetated Swale 4P Vegetated Swale 5P Vegetated Retention Area 7P Vegetated Retention Area 8P Vegetated Retention Area 1L Design Pt Analysis (East Property Line)Routing Diagram for 06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Subcat Reach Pond Link 06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Area Listing (all nodes)Area (acres)CNDescription (subcatchment-numbers)4.01658>75% Grass cover, Good, HSG B (3S, 4S, 5S, 7S, 8S, 9S)1.13658Meadow, non-grazed, HSG B (1S, 2S, 5aS, 9S)0.36698Paved parking, HSG B (1S, 2S, 3S, 4S, 7S)0.14598Roofs, HSG B (5S, 8S)11.52356Woods, Good, HSG B (5aS, 6S) Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Ridge Rd North Runoff=0.15 cfs @ 12.03 hrs, Volume=0.009 af, Depth=0.73"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 3,43398Paved parking, HSG B 2,63558Meadow, non-grazed, HSG B 6,06881Weighted Average 2,63543.42% Pervious Area 3,43356.58% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)9.3560.02500.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"1.01730.03002.823.10 Parabolic Channel, W=5.00' D=0.33' Area=1.1 sf Perim=5.1'n= 0.033 Earth, grassed & winding 10.3229Total Summary for Subcatchment 2S: Ridge Rd South Runoff=0.18 cfs @ 11.93 hrs, Volume=0.007 af, Depth=0.56"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 3,34198Paved parking, HSG B 3,56758Meadow, non-grazed, HSG B 6,90877Weighted Average 3,56751.64% Pervious Area 3,34148.36% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)1.62370.02502.432.67 Parabolic Channel, W=5.00' D=0.33' Area=1.1 sf Perim=5.1'n= 0.035 Earth, dense weeds Summary for Subcatchment 3S: Lot 1 Front yard Runoff=0.02 cfs @ 12.14 hrs, Volume=0.003 af, Depth=0.15"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20" Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Area (sf)CNDescription 1,39498Paved parking, HSG B *9,16558>75% Grass cover, Good, HSG B 10,55963Weighted Average 9,16586.80% Pervious Area 1,39413.20% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)13.71000.03000.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"0.3300.05001.57 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 14.0130Total Summary for Subcatchment 4S: Lot 2 Front yard Runoff=0.04 cfs @ 11.94 hrs, Volume=0.003 af, Depth=0.15"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 1,38198Paved parking, HSG B *10,34758>75% Grass cover, Good, HSG B 11,72863Weighted Average 10,34788.22% Pervious Area 1,38111.78% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)0.160.07001.14 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.50"0.190.04001.40 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.215Total Summary for Subcatchment 5aS: Wetland South Runoff=0.04 cfs @ 15.36 hrs, Volume=0.031 af, Depth=0.05"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 19,26558Meadow, non-grazed, HSG B *334,21056Woods, Good, HSG B 353,47556Weighted Average 353,475100.00% Pervious Area Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)14.81000.02500.11 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"21.36400.04000.50 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 36.1740Total Summary for Subcatchment 5S: Wetland South Runoff=0.04 cfs @ 12.38 hrs, Volume=0.014 af, Depth=0.12"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 4,22498Roofs, HSG B *60,75858>75% Grass cover, Good, HSG B 64,98261Weighted Average 60,75893.50% Pervious Area 4,2246.50% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)14.81000.02500.11 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"7.82330.04000.50 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 22.6333Total Summary for Subcatchment 6S: Wetland Northeast Runoff=0.02 cfs @ 15.97 hrs, Volume=0.015 af, Depth=0.05"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription *167,72656Woods, Good, HSG B 167,726100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)32.11000.01000.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"47.37100.01000.25 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 79.4810Total Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 7S: Lot 3 Driveway Runoff=0.14 cfs @ 12.05 hrs, Volume=0.014 af, Depth=0.19"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 6,38398Paved parking, HSG B *31,61758>75% Grass cover, Good, HSG B 38,00065Weighted Average 31,61783.20% Pervious Area 6,38316.80% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)8.5330.03000.06 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"0.34230.670024.1964.51 Parabolic Channel, W=4.00' D=1.00' Area=2.7 sf Perim=4.6'n= 0.035 Earth, dense weeds 8.8456Total Summary for Subcatchment 8S: Lot 3 House Runoff=0.02 cfs @ 12.60 hrs, Volume=0.009 af, Depth=0.10"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 2,11298Roofs, HSG B *44,62458>75% Grass cover, Good, HSG B 46,73660Weighted Average 44,62495.48% Pervious Area 2,1124.52% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)18.11000.01500.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"6.41350.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 24.5235Total Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 9S: East of Lot 3 Driveway Runoff=0.01 cfs @ 13.30 hrs, Volume=0.006 af, Depth=0.07"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 1-Year Rainfall=2.20"Area (sf)CNDescription 24,03258Meadow, non-grazed, HSG B *18,42058>75% Grass cover, Good, HSG B 42,45258Weighted Average 42,452100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)12.21000.04000.14 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"10.51930.01500.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 8.41790.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 31.1472Total Summary for Reach 2R: Flow Thru Subcatchment #2 Inflow Area =0.382 ac,29.03% Impervious, Inflow Depth = 0.27" for 1-Year event Inflow=0.15 cfs @ 12.03 hrs, Volume=0.009 af Outflow=0.14 cfs @ 12.12 hrs, Volume=0.009 af, Atten= 8%, Lag= 5.8 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 1.10 fps, Min. Travel Time= 3.6 min Avg. Velocity = 0.40 fps, Avg. Travel Time= 9.9 min Peak Storage= 30 cf @ 12.07 hrs Average Depth at Peak Storage= 0.08'Bank-Full Depth= 1.00' Flow Area= 5.3 sf, Capacity= 30.19 cfs 8.00' x 1.00' deep Parabolic Channel, n= 0.030 Earth, grassed & winding Length= 237.0' Slope= 0.0236 '/'Inlet Invert= 305.60', Outlet Invert= 300.00'‡ Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Reach 3R: Flow Thru Wetland Inflow Area =0.810 ac,27.08% Impervious, Inflow Depth = 0.24" for 1-Year event Inflow=0.21 cfs @ 11.93 hrs, Volume=0.016 af Outflow=0.03 cfs @ 15.42 hrs, Volume=0.016 af, Atten= 86%, Lag= 209.2 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.09 fps, Min. Travel Time= 159.9 min Avg. Velocity = 0.06 fps, Avg. Travel Time= 226.4 min Peak Storage= 278 cf @ 12.75 hrs Average Depth at Peak Storage= 0.02'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 28.88 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 833.0' Slope= 0.0107 '/'Inlet Invert= 299.90', Outlet Invert= 291.00'‡Summary for Reach 5R: Flow Thru Wetland Inflow Area =1.492 ac,6.50% Impervious, Inflow Depth = 0.00" for 1-Year event Inflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af Outflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.00 fps, Min. Travel Time= 0.0 min Avg. Velocity = 0.00 fps, Avg. Travel Time= 0.0 min Peak Storage= 0 cf @ 5.00 hrs Average Depth at Peak Storage= 0.00'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 31.34 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 715.0' Slope= 0.0126 '/'Inlet Invert= 300.00', Outlet Invert= 291.00'‡ Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Reach 7R: Flow Thru Wetland Inflow Area =1.945 ac,10.03% Impervious, Inflow Depth = 0.00" for 1-Year event Inflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af Outflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.00 fps, Min. Travel Time= 0.0 min Avg. Velocity = 0.00 fps, Avg. Travel Time= 0.0 min Peak Storage= 0 cf @ 5.00 hrs Average Depth at Peak Storage= 0.00'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 35.20 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 126.0' Slope= 0.0159 '/'Inlet Invert= 296.00', Outlet Invert= 294.00'‡Summary for Pond 1R: Culvert Under Common Driveway Inflow Area =0.382 ac,29.03% Impervious, Inflow Depth = 0.27" for 1-Year event Inflow=0.15 cfs @ 12.03 hrs, Volume=0.009 af Outflow=0.15 cfs @ 12.03 hrs, Volume=0.009 af, Atten= 0%, Lag= 0.0 min Primary=0.15 cfs @ 12.03 hrs, Volume=0.009 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 306.02' @ 12.03 hrs Flood Elev= 306.60'DeviceRouting InvertOutlet Devices #1Primary305.80'12.0" Round Culvert L= 16.0' Ke= 0.500 Inlet / Outlet Invert= 305.80' / 305.60' S= 0.0125 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 0.79 sf Primary OutFlow Max=0.15 cfs @ 12.03 hrs HW=306.02' (Free Discharge)1=Culvert (Barrel Controls 0.15 cfs @ 1.75 fps) Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Pond 3P: Dry Swale Inflow Area =0.242 ac,13.20% Impervious, Inflow Depth = 0.15" for 1-Year event Inflow=0.02 cfs @ 12.14 hrs, Volume=0.003 af Outflow=0.02 cfs @ 12.16 hrs, Volume=0.003 af, Atten= 2%, Lag= 1.2 min Discarded=0.02 cfs @ 12.16 hrs, Volume=0.003 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 307.00' @ 12.16 hrs Surf.Area= 704 sf Storage= 1 cf Plug-Flow detention time= 1.2 min calculated for 0.003 af (100% of inflow)Center-of-Mass det. time= 1.2 min ( 975.4 - 974.2 )VolumeInvertAvail.StorageStorage Description #1307.00'656 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)307.0070300 307.751,045656656 DeviceRouting InvertOutlet Devices #1Primary307.70'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded307.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.08 cfs @ 12.16 hrs HW=307.00' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.08 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=307.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 4aP: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.00" for 1-Year event Inflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af Outflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af, Atten= 0%, Lag= 0.0 min Discarded=0.00 cfs @ 5.00 hrs, Volume=0.000 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 304.00' @ 5.00 hrs Surf.Area= 0 sf Storage= 0 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow)Center-of-Mass det. time= (not calculated: no inflow) Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC VolumeInvertAvail.StorageStorage Description #1304.00'141 cf Custom Stage Data (Prismatic) Listed below (Recalc) x 2 ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)304.00000 304.751887171 DeviceRouting InvertOutlet Devices #1Primary304.55'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded304.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.00 cfs @ 5.00 hrs HW=304.00' (Free Discharge)2=Exfiltration ( Controls 0.00 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=304.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 4bP: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.00" for 1-Year event Inflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af Outflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af, Atten= 0%, Lag= 0.0 min Discarded=0.00 cfs @ 5.00 hrs, Volume=0.000 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 303.25' @ 5.00 hrs Surf.Area= 0 sf Storage= 0 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow)Center-of-Mass det. time= (not calculated: no inflow)VolumeInvertAvail.StorageStorage Description #1303.25'211 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)303.25000 304.00563211211 DeviceRouting InvertOutlet Devices #1Primary303.80'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded303.25'4.615 in/hr Exfiltration over Surface area Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.00 cfs @ 5.00 hrs HW=303.25' (Free Discharge)2=Exfiltration ( Controls 0.00 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=303.25' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 4P: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.15" for 1-Year event Inflow=0.04 cfs @ 11.94 hrs, Volume=0.003 af Outflow=0.01 cfs @ 12.17 hrs, Volume=0.003 af, Atten= 75%, Lag= 13.9 min Discarded=0.01 cfs @ 12.17 hrs, Volume=0.003 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 307.20' @ 12.17 hrs Surf.Area= 100 sf Storage= 10 cf Plug-Flow detention time= 7.1 min calculated for 0.003 af (100% of inflow)Center-of-Mass det. time= 7.1 min ( 968.5 - 961.4 )VolumeInvertAvail.StorageStorage Description #1307.00'141 cf Custom Stage Data (Prismatic) Listed below (Recalc) x 4 ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)307.00000 307.75943535 DeviceRouting InvertOutlet Devices #1Primary307.55'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded307.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.01 cfs @ 12.17 hrs HW=307.20' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.01 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=307.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 5P: Vegetated Retention Area Inflow Area =1.492 ac,6.50% Impervious, Inflow Depth = 0.12" for 1-Year event Inflow=0.04 cfs @ 12.38 hrs, Volume=0.014 af Outflow=0.03 cfs @ 12.71 hrs, Volume=0.014 af, Atten= 12%, Lag= 19.5 min Discarded=0.03 cfs @ 12.71 hrs, Volume=0.014 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 300.11' @ 12.71 hrs Surf.Area= 315 sf Storage= 18 cf Plug-Flow detention time= 4.5 min calculated for 0.014 af (100% of inflow)Center-of-Mass det. time= 4.5 min ( 1,010.4 - 1,005.8 )VolumeInvertAvail.StorageStorage Description #1300.00'1,396 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)300.00000 301.002,7921,3961,396 DeviceRouting InvertOutlet Devices #1Primary300.80'10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded300.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 12.71 hrs HW=300.11' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.03 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=300.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 7P: Vegetated Retention Area Inflow Area =0.872 ac,16.80% Impervious, Inflow Depth = 0.19" for 1-Year event Inflow=0.14 cfs @ 12.05 hrs, Volume=0.014 af Outflow=0.07 cfs @ 12.18 hrs, Volume=0.014 af, Atten= 52%, Lag= 7.8 min Discarded=0.07 cfs @ 12.18 hrs, Volume=0.014 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 298.14' @ 12.18 hrs Surf.Area= 621 sf Storage= 43 cf Plug-Flow detention time= 4.0 min calculated for 0.014 af (100% of inflow)Center-of-Mass det. time= 4.0 min ( 953.8 - 949.8 )VolumeInvertAvail.StorageStorage Description #1298.00'2,233 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)298.00000 299.004,4652,2332,233 Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC DeviceRouting InvertOutlet Devices #1Primary298.80'70.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded298.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.07 cfs @ 12.18 hrs HW=298.14' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.07 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=298.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 8P: Vegetated Retention Area Inflow Area =1.945 ac,10.03% Impervious, Inflow Depth = 0.05" for 1-Year event Inflow=0.02 cfs @ 12.60 hrs, Volume=0.009 af Outflow=0.02 cfs @ 12.90 hrs, Volume=0.009 af, Atten= 11%, Lag= 18.2 min Discarded=0.02 cfs @ 12.90 hrs, Volume=0.009 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 296.05' @ 12.90 hrs Surf.Area= 375 sf Storage= 10 cf Plug-Flow detention time= 5.6 min calculated for 0.009 af (100% of inflow)Center-of-Mass det. time= 5.6 min ( 1,027.0 - 1,021.4 )VolumeInvertAvail.StorageStorage Description #1296.00'3,559 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)296.00000 297.007,1183,5593,559 DeviceRouting InvertOutlet Devices #1Primary296.80'10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded296.00'2.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.02 cfs @ 12.90 hrs HW=296.05' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.02 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=296.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type II 24-hr 1-Year Rainfall=2.20"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Link 1L: Design Pt Analysis (East Property Line)Inflow Area =17.186 ac,2.97% Impervious, Inflow Depth = 0.05" for 1-Year event Inflow=0.09 cfs @ 15.44 hrs, Volume=0.068 af Primary=0.09 cfs @ 15.44 hrs, Volume=0.068 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Ridge Rd North Runoff=0.42 cfs @ 12.02 hrs, Volume=0.023 af, Depth=1.95"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 3,43398Paved parking, HSG B 2,63558Meadow, non-grazed, HSG B 6,06881Weighted Average 2,63543.42% Pervious Area 3,43356.58% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)9.3560.02500.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"1.01730.03002.823.10 Parabolic Channel, W=5.00' D=0.33' Area=1.1 sf Perim=5.1'n= 0.033 Earth, grassed & winding 10.3229Total Summary for Subcatchment 2S: Ridge Rd South Runoff=0.56 cfs @ 11.92 hrs, Volume=0.022 af, Depth=1.66"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 3,34198Paved parking, HSG B 3,56758Meadow, non-grazed, HSG B 6,90877Weighted Average 3,56751.64% Pervious Area 3,34148.36% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)1.62370.02502.432.67 Parabolic Channel, W=5.00' D=0.33' Area=1.1 sf Perim=5.1'n= 0.035 Earth, dense weeds Summary for Subcatchment 3S: Lot 1 Front yard Runoff=0.23 cfs @ 12.08 hrs, Volume=0.016 af, Depth=0.81"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80" Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Area (sf)CNDescription 1,39498Paved parking, HSG B *9,16558>75% Grass cover, Good, HSG B 10,55963Weighted Average 9,16586.80% Pervious Area 1,39413.20% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)13.71000.03000.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"0.3300.05001.57 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 14.0130Total Summary for Subcatchment 4S: Lot 2 Front yard Runoff=0.46 cfs @ 11.91 hrs, Volume=0.018 af, Depth=0.81"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 1,38198Paved parking, HSG B *10,34758>75% Grass cover, Good, HSG B 11,72863Weighted Average 10,34788.22% Pervious Area 1,38111.78% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)0.160.07001.14 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.50"0.190.04001.40 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.215Total Summary for Subcatchment 5aS: Wetland South Runoff=1.85 cfs @ 12.43 hrs, Volume=0.333 af, Depth=0.49"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 19,26558Meadow, non-grazed, HSG B *334,21056Woods, Good, HSG B 353,47556Weighted Average 353,475100.00% Pervious Area Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)14.81000.02500.11 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"21.36400.04000.50 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 36.1740Total Summary for Subcatchment 5S: Wetland South Runoff=0.86 cfs @ 12.19 hrs, Volume=0.089 af, Depth=0.71"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 4,22498Roofs, HSG B *60,75858>75% Grass cover, Good, HSG B 64,98261Weighted Average 60,75893.50% Pervious Area 4,2246.50% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)14.81000.02500.11 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"7.82330.04000.50 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 22.6333Total Summary for Subcatchment 6S: Wetland Northeast Runoff=0.52 cfs @ 13.14 hrs, Volume=0.158 af, Depth=0.49"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription *167,72656Woods, Good, HSG B 167,726100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)32.11000.01000.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"47.37100.01000.25 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 79.4810Total Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 7S: Lot 3 Driveway Runoff=1.20 cfs @ 12.02 hrs, Volume=0.066 af, Depth=0.91"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 6,38398Paved parking, HSG B *31,61758>75% Grass cover, Good, HSG B 38,00065Weighted Average 31,61783.20% Pervious Area 6,38316.80% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)8.5330.03000.06 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"0.34230.670024.1964.51 Parabolic Channel, W=4.00' D=1.00' Area=2.7 sf Perim=4.6'n= 0.035 Earth, dense weeds 8.8456Total Summary for Subcatchment 8S: Lot 3 House Runoff=0.53 cfs @ 12.22 hrs, Volume=0.060 af, Depth=0.67"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 2,11298Roofs, HSG B *44,62458>75% Grass cover, Good, HSG B 46,73660Weighted Average 44,62495.48% Pervious Area 2,1124.52% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)18.11000.01500.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"6.41350.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 24.5235Total Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 9S: East of Lot 3 Driveway Runoff=0.32 cfs @ 12.34 hrs, Volume=0.047 af, Depth=0.58"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 10-Year Rainfall=3.80"Area (sf)CNDescription 24,03258Meadow, non-grazed, HSG B *18,42058>75% Grass cover, Good, HSG B 42,45258Weighted Average 42,452100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)12.21000.04000.14 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"10.51930.01500.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 8.41790.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 31.1472Total Summary for Reach 2R: Flow Thru Subcatchment #2 Inflow Area =0.382 ac,29.03% Impervious, Inflow Depth = 0.71" for 10-Year event Inflow=0.42 cfs @ 12.02 hrs, Volume=0.023 af Outflow=0.40 cfs @ 12.09 hrs, Volume=0.023 af, Atten= 4%, Lag= 4.2 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 1.52 fps, Min. Travel Time= 2.6 min Avg. Velocity = 0.48 fps, Avg. Travel Time= 8.2 min Peak Storage= 62 cf @ 12.05 hrs Average Depth at Peak Storage= 0.13'Bank-Full Depth= 1.00' Flow Area= 5.3 sf, Capacity= 30.19 cfs 8.00' x 1.00' deep Parabolic Channel, n= 0.030 Earth, grassed & winding Length= 237.0' Slope= 0.0236 '/'Inlet Invert= 305.60', Outlet Invert= 300.00'‡ Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Reach 3R: Flow Thru Wetland Inflow Area =0.810 ac,27.08% Impervious, Inflow Depth = 0.66" for 10-Year event Inflow=0.70 cfs @ 11.93 hrs, Volume=0.045 af Outflow=0.16 cfs @ 13.74 hrs, Volume=0.045 af, Atten= 78%, Lag= 108.6 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.17 fps, Min. Travel Time= 84.1 min Avg. Velocity = 0.07 fps, Avg. Travel Time= 205.4 min Peak Storage= 787 cf @ 12.33 hrs Average Depth at Peak Storage= 0.05'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 28.88 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 833.0' Slope= 0.0107 '/'Inlet Invert= 299.90', Outlet Invert= 291.00'‡Summary for Reach 5R: Flow Thru Wetland Inflow Area =1.492 ac,6.50% Impervious, Inflow Depth = 0.00" for 10-Year event Inflow=0.03 cfs @ 12.67 hrs, Volume=0.001 af Outflow=0.00 cfs @ 15.97 hrs, Volume=0.001 af, Atten= 93%, Lag= 198.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.06 fps, Min. Travel Time= 185.2 min Avg. Velocity = 0.06 fps, Avg. Travel Time= 185.2 min Peak Storage= 25 cf @ 12.88 hrs Average Depth at Peak Storage= 0.00'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 31.34 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 715.0' Slope= 0.0126 '/'Inlet Invert= 300.00', Outlet Invert= 291.00'‡ Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Reach 7R: Flow Thru Wetland Inflow Area =1.945 ac,10.03% Impervious, Inflow Depth = 0.00" for 10-Year event Inflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af Outflow=0.00 cfs @ 5.00 hrs, Volume=0.000 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.00 fps, Min. Travel Time= 0.0 min Avg. Velocity = 0.00 fps, Avg. Travel Time= 0.0 min Peak Storage= 0 cf @ 5.00 hrs Average Depth at Peak Storage= 0.00'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 35.20 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 126.0' Slope= 0.0159 '/'Inlet Invert= 296.00', Outlet Invert= 294.00'‡Summary for Pond 1R: Culvert Under Common Driveway Inflow Area =0.382 ac,29.03% Impervious, Inflow Depth = 0.71" for 10-Year event Inflow=0.42 cfs @ 12.02 hrs, Volume=0.023 af Outflow=0.42 cfs @ 12.02 hrs, Volume=0.023 af, Atten= 0%, Lag= 0.0 min Primary=0.42 cfs @ 12.02 hrs, Volume=0.023 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 306.18' @ 12.02 hrs Flood Elev= 306.60'DeviceRouting InvertOutlet Devices #1Primary305.80'12.0" Round Culvert L= 16.0' Ke= 0.500 Inlet / Outlet Invert= 305.80' / 305.60' S= 0.0125 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 0.79 sf Primary OutFlow Max=0.41 cfs @ 12.02 hrs HW=306.18' (Free Discharge)1=Culvert (Barrel Controls 0.41 cfs @ 2.29 fps) Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Pond 3P: Dry Swale Inflow Area =0.242 ac,13.20% Impervious, Inflow Depth = 0.81" for 10-Year event Inflow=0.23 cfs @ 12.08 hrs, Volume=0.016 af Outflow=0.08 cfs @ 12.31 hrs, Volume=0.016 af, Atten= 64%, Lag= 13.8 min Discarded=0.08 cfs @ 12.31 hrs, Volume=0.016 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 307.15' @ 12.31 hrs Surf.Area= 772 sf Storage= 111 cf Plug-Flow detention time= 7.0 min calculated for 0.016 af (100% of inflow)Center-of-Mass det. time= 7.0 min ( 899.1 - 892.1 )VolumeInvertAvail.StorageStorage Description #1307.00'656 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)307.0070300 307.751,045656656 DeviceRouting InvertOutlet Devices #1Primary307.70'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded307.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.08 cfs @ 12.31 hrs HW=307.15' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.08 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=307.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 4aP: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.19" for 10-Year event Inflow=0.42 cfs @ 11.91 hrs, Volume=0.004 af Outflow=0.29 cfs @ 11.96 hrs, Volume=0.004 af, Atten= 30%, Lag= 2.8 min Discarded=0.03 cfs @ 11.96 hrs, Volume=0.003 af Primary=0.26 cfs @ 11.96 hrs, Volume=0.001 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 304.59' @ 11.96 hrs Surf.Area= 294 sf Storage= 86 cf Plug-Flow detention time= 24.0 min calculated for 0.004 af (100% of inflow)Center-of-Mass det. time= 24.0 min ( 744.4 - 720.4 ) Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC VolumeInvertAvail.StorageStorage Description #1304.00'141 cf Custom Stage Data (Prismatic) Listed below (Recalc) x 2 ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)304.00000 304.751887171 DeviceRouting InvertOutlet Devices #1Primary304.55'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded304.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 11.96 hrs HW=304.59' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.03 cfs)Primary OutFlow Max=0.26 cfs @ 11.96 hrs HW=304.59' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 0.26 cfs @ 0.48 fps)Summary for Pond 4bP: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.06" for 10-Year event Inflow=0.26 cfs @ 11.96 hrs, Volume=0.001 af Outflow=0.03 cfs @ 12.03 hrs, Volume=0.001 af, Atten= 90%, Lag= 4.5 min Discarded=0.03 cfs @ 12.03 hrs, Volume=0.001 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 303.59' @ 12.03 hrs Surf.Area= 257 sf Storage= 44 cf Plug-Flow detention time= 19.2 min calculated for 0.001 af (100% of inflow)Center-of-Mass det. time= 19.2 min ( 738.3 - 719.1 )VolumeInvertAvail.StorageStorage Description #1303.25'211 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)303.25000 304.00563211211 DeviceRouting InvertOutlet Devices #1Primary303.80'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded303.25'4.615 in/hr Exfiltration over Surface area Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.03 cfs @ 12.03 hrs HW=303.59' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.03 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=303.25' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 4P: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.81" for 10-Year event Inflow=0.46 cfs @ 11.91 hrs, Volume=0.018 af Outflow=0.45 cfs @ 11.91 hrs, Volume=0.018 af, Atten= 1%, Lag= 0.5 min Discarded=0.03 cfs @ 11.91 hrs, Volume=0.014 af Primary=0.42 cfs @ 11.91 hrs, Volume=0.004 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 307.60' @ 11.91 hrs Surf.Area= 301 sf Storage= 90 cf Plug-Flow detention time= 20.5 min calculated for 0.018 af (100% of inflow)Center-of-Mass det. time= 20.5 min ( 899.8 - 879.3 )VolumeInvertAvail.StorageStorage Description #1307.00'141 cf Custom Stage Data (Prismatic) Listed below (Recalc) x 4 ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)307.00000 307.75943535 DeviceRouting InvertOutlet Devices #1Primary307.55'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded307.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 11.91 hrs HW=307.60' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.03 cfs)Primary OutFlow Max=0.42 cfs @ 11.91 hrs HW=307.60' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 0.42 cfs @ 0.56 fps)Summary for Pond 5P: Vegetated Retention Area Inflow Area =1.492 ac,6.50% Impervious, Inflow Depth = 0.71" for 10-Year event Inflow=0.86 cfs @ 12.19 hrs, Volume=0.089 af Outflow=0.28 cfs @ 12.67 hrs, Volume=0.089 af, Atten= 68%, Lag= 28.5 min Discarded=0.24 cfs @ 12.67 hrs, Volume=0.088 af Primary=0.03 cfs @ 12.67 hrs, Volume=0.001 af Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 300.81' @ 12.67 hrs Surf.Area= 2,267 sf Storage= 920 cf Plug-Flow detention time= 35.9 min calculated for 0.089 af (100% of inflow)Center-of-Mass det. time= 35.9 min ( 944.2 - 908.3 )VolumeInvertAvail.StorageStorage Description #1300.00'1,396 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)300.00000 301.002,7921,3961,396 DeviceRouting InvertOutlet Devices #1Primary300.80'10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded300.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.24 cfs @ 12.67 hrs HW=300.81' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.24 cfs)Primary OutFlow Max=0.03 cfs @ 12.67 hrs HW=300.81' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 0.03 cfs @ 0.28 fps)Summary for Pond 7P: Vegetated Retention Area Inflow Area =0.872 ac,16.80% Impervious, Inflow Depth = 0.91" for 10-Year event Inflow=1.20 cfs @ 12.02 hrs, Volume=0.066 af Outflow=0.27 cfs @ 12.25 hrs, Volume=0.066 af, Atten= 77%, Lag= 13.7 min Discarded=0.27 cfs @ 12.25 hrs, Volume=0.066 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 298.57' @ 12.25 hrs Surf.Area= 2,567 sf Storage= 738 cf Plug-Flow detention time= 22.8 min calculated for 0.066 af (100% of inflow)Center-of-Mass det. time= 22.8 min ( 902.5 - 879.7 )VolumeInvertAvail.StorageStorage Description #1298.00'2,233 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)298.00000 299.004,4652,2332,233 Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC DeviceRouting InvertOutlet Devices #1Primary298.80'70.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded298.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.27 cfs @ 12.25 hrs HW=298.57' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.27 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=298.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 8P: Vegetated Retention Area Inflow Area =1.945 ac,10.03% Impervious, Inflow Depth = 0.37" for 10-Year event Inflow=0.53 cfs @ 12.22 hrs, Volume=0.060 af Outflow=0.14 cfs @ 12.87 hrs, Volume=0.060 af, Atten= 73%, Lag= 38.9 min Discarded=0.14 cfs @ 12.87 hrs, Volume=0.060 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 296.43' @ 12.87 hrs Surf.Area= 3,040 sf Storage= 649 cf Plug-Flow detention time= 46.5 min calculated for 0.060 af (100% of inflow)Center-of-Mass det. time= 46.5 min ( 961.0 - 914.6 )VolumeInvertAvail.StorageStorage Description #1296.00'3,559 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)296.00000 297.007,1183,5593,559 DeviceRouting InvertOutlet Devices #1Primary296.80'10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded296.00'2.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.14 cfs @ 12.87 hrs HW=296.43' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.14 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=296.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type II 24-hr 10-Year Rainfall=3.80"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Link 1L: Design Pt Analysis (East Property Line)Inflow Area =17.186 ac,2.97% Impervious, Inflow Depth = 0.41" for 10-Year event Inflow=2.32 cfs @ 12.44 hrs, Volume=0.583 af Primary=2.32 cfs @ 12.44 hrs, Volume=0.583 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Ridge Rd North Runoff=0.70 cfs @ 12.02 hrs, Volume=0.039 af, Depth=3.34"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 3,43398Paved parking, HSG B 2,63558Meadow, non-grazed, HSG B 6,06881Weighted Average 2,63543.42% Pervious Area 3,43356.58% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)9.3560.02500.10 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"1.01730.03002.823.10 Parabolic Channel, W=5.00' D=0.33' Area=1.1 sf Perim=5.1'n= 0.033 Earth, grassed & winding 10.3229Total Summary for Subcatchment 2S: Ridge Rd South Runoff=0.97 cfs @ 11.92 hrs, Volume=0.039 af, Depth=2.96"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 3,34198Paved parking, HSG B 3,56758Meadow, non-grazed, HSG B 6,90877Weighted Average 3,56751.64% Pervious Area 3,34148.36% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)1.62370.02502.432.67 Parabolic Channel, W=5.00' D=0.33' Area=1.1 sf Perim=5.1'n= 0.035 Earth, dense weeds Summary for Subcatchment 3S: Lot 1 Front yard Runoff=0.55 cfs @ 12.07 hrs, Volume=0.036 af, Depth=1.77"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40" Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Area (sf)CNDescription 1,39498Paved parking, HSG B *9,16558>75% Grass cover, Good, HSG B 10,55963Weighted Average 9,16586.80% Pervious Area 1,39413.20% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)13.71000.03000.12 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"0.3300.05001.57 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 14.0130Total Summary for Subcatchment 4S: Lot 2 Front yard Runoff=1.05 cfs @ 11.90 hrs, Volume=0.040 af, Depth=1.77"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 1,38198Paved parking, HSG B *10,34758>75% Grass cover, Good, HSG B 11,72863Weighted Average 10,34788.22% Pervious Area 1,38111.78% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)0.160.07001.14 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.50"0.190.04001.40 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 0.215Total Summary for Subcatchment 5aS: Wetland South Runoff=6.47 cfs @ 12.39 hrs, Volume=0.848 af, Depth=1.25"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 19,26558Meadow, non-grazed, HSG B *334,21056Woods, Good, HSG B 353,47556Weighted Average 353,475100.00% Pervious Area Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)14.81000.02500.11 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"21.36400.04000.50 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 36.1740Total Summary for Subcatchment 5S: Wetland South Runoff=2.32 cfs @ 12.18 hrs, Volume=0.201 af, Depth=1.62"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 4,22498Roofs, HSG B *60,75858>75% Grass cover, Good, HSG B 64,98261Weighted Average 60,75893.50% Pervious Area 4,2246.50% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)14.81000.02500.11 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"7.82330.04000.50 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 22.6333Total Summary for Subcatchment 6S: Wetland Northeast Runoff=1.73 cfs @ 12.97 hrs, Volume=0.402 af, Depth=1.25"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription *167,72656Woods, Good, HSG B 167,726100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)32.11000.01000.05 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"47.37100.01000.25 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 79.4810Total Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 7S: Lot 3 Driveway Runoff=2.68 cfs @ 12.01 hrs, Volume=0.140 af, Depth=1.93"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 6,38398Paved parking, HSG B *31,61758>75% Grass cover, Good, HSG B 38,00065Weighted Average 31,61783.20% Pervious Area 6,38316.80% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)8.5330.03000.06 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.50"0.34230.670024.1964.51 Parabolic Channel, W=4.00' D=1.00' Area=2.7 sf Perim=4.6'n= 0.035 Earth, dense weeds 8.8456Total Summary for Subcatchment 8S: Lot 3 House Runoff=1.48 cfs @ 12.20 hrs, Volume=0.138 af, Depth=1.54"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 2,11298Roofs, HSG B *44,62458>75% Grass cover, Good, HSG B 46,73660Weighted Average 44,62495.48% Pervious Area 2,1124.52% Impervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)18.11000.01500.09 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"6.41350.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 24.5235Total Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Subcatchment 9S: East of Lot 3 Driveway Runoff=1.00 cfs @ 12.29 hrs, Volume=0.113 af, Depth=1.40"Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Type II 24-hr 100-Year Rainfall=5.40"Area (sf)CNDescription 24,03258Meadow, non-grazed, HSG B *18,42058>75% Grass cover, Good, HSG B 42,45258Weighted Average 42,452100.00% Pervious Area TcLengthSlopeVelocityCapacityDescription (min)(feet)(ft/ft)(ft/sec)(cfs)12.21000.04000.14 Sheet Flow, Grass: Dense n= 0.240 P2= 2.50"10.51930.01500.31 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 8.41790.02000.35 Shallow Concentrated Flow, Forest w/Heavy Litter Kv= 2.5 fps 31.1472Total Summary for Reach 2R: Flow Thru Subcatchment #2 Inflow Area =0.382 ac,29.03% Impervious, Inflow Depth = 1.22" for 100-Year event Inflow=0.70 cfs @ 12.02 hrs, Volume=0.039 af Outflow=0.68 cfs @ 12.08 hrs, Volume=0.039 af, Atten= 3%, Lag= 3.6 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 1.79 fps, Min. Travel Time= 2.2 min Avg. Velocity = 0.53 fps, Avg. Travel Time= 7.4 min Peak Storage= 90 cf @ 12.04 hrs Average Depth at Peak Storage= 0.17'Bank-Full Depth= 1.00' Flow Area= 5.3 sf, Capacity= 30.19 cfs 8.00' x 1.00' deep Parabolic Channel, n= 0.030 Earth, grassed & winding Length= 237.0' Slope= 0.0236 '/'Inlet Invert= 305.60', Outlet Invert= 300.00'‡ Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Reach 3R: Flow Thru Wetland Inflow Area =0.810 ac,27.08% Impervious, Inflow Depth = 1.26" for 100-Year event Inflow=2.15 cfs @ 11.92 hrs, Volume=0.085 af Outflow=0.47 cfs @ 13.13 hrs, Volume=0.085 af, Atten= 78%, Lag= 72.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.25 fps, Min. Travel Time= 55.0 min Avg. Velocity = 0.07 fps, Avg. Travel Time= 190.3 min Peak Storage= 1,539 cf @ 12.21 hrs Average Depth at Peak Storage= 0.09'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 28.88 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 833.0' Slope= 0.0107 '/'Inlet Invert= 299.90', Outlet Invert= 291.00'‡Summary for Reach 5R: Flow Thru Wetland Inflow Area =1.492 ac,6.50% Impervious, Inflow Depth = 0.49" for 100-Year event Inflow=1.77 cfs @ 12.26 hrs, Volume=0.061 af Outflow=0.60 cfs @ 13.27 hrs, Volume=0.061 af, Atten= 66%, Lag= 61.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.29 fps, Min. Travel Time= 40.8 min Avg. Velocity = 0.08 fps, Avg. Travel Time= 153.3 min Peak Storage= 1,458 cf @ 12.59 hrs Average Depth at Peak Storage= 0.10'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 31.34 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 715.0' Slope= 0.0126 '/'Inlet Invert= 300.00', Outlet Invert= 291.00'‡ Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Reach 7R: Flow Thru Wetland Inflow Area =1.945 ac,10.03% Impervious, Inflow Depth = 0.05" for 100-Year event Inflow=0.21 cfs @ 12.64 hrs, Volume=0.009 af Outflow=0.17 cfs @ 12.97 hrs, Volume=0.009 af, Atten= 19%, Lag= 20.1 min Routing by Stor-Ind+Trans method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Max. Velocity= 0.19 fps, Min. Travel Time= 10.9 min Avg. Velocity = 0.09 fps, Avg. Travel Time= 23.9 min Peak Storage= 111 cf @ 12.79 hrs Average Depth at Peak Storage= 0.04'Bank-Full Depth= 1.00' Flow Area= 26.0 sf, Capacity= 35.20 cfs 20.00' x 1.00' deep channel, n= 0.120 Heavy timber, flow above branches Side Slope Z-value= 6.0 '/' Top Width= 32.00'Length= 126.0' Slope= 0.0159 '/'Inlet Invert= 296.00', Outlet Invert= 294.00'‡Summary for Pond 1R: Culvert Under Common Driveway Inflow Area =0.382 ac,29.03% Impervious, Inflow Depth = 1.22" for 100-Year event Inflow=0.70 cfs @ 12.02 hrs, Volume=0.039 af Outflow=0.70 cfs @ 12.02 hrs, Volume=0.039 af, Atten= 0%, Lag= 0.0 min Primary=0.70 cfs @ 12.02 hrs, Volume=0.039 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 306.30' @ 12.02 hrs Flood Elev= 306.60'DeviceRouting InvertOutlet Devices #1Primary305.80'12.0" Round Culvert L= 16.0' Ke= 0.500 Inlet / Outlet Invert= 305.80' / 305.60' S= 0.0125 '/' Cc= 0.900 n= 0.020 Corrugated PE, corrugated interior, Flow Area= 0.79 sf Primary OutFlow Max=0.70 cfs @ 12.02 hrs HW=306.30' (Free Discharge)1=Culvert (Barrel Controls 0.70 cfs @ 2.61 fps) Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Pond 3P: Dry Swale Inflow Area =0.242 ac,13.20% Impervious, Inflow Depth = 1.77" for 100-Year event Inflow=0.55 cfs @ 12.07 hrs, Volume=0.036 af Outflow=0.10 cfs @ 12.50 hrs, Volume=0.036 af, Atten= 82%, Lag= 25.9 min Discarded=0.10 cfs @ 12.50 hrs, Volume=0.036 af Primary=0.00 cfs @ 5.00 hrs, Volume=0.000 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 307.56' @ 12.50 hrs Surf.Area= 957 sf Storage= 463 cf Plug-Flow detention time= 32.6 min calculated for 0.036 af (100% of inflow)Center-of-Mass det. time= 32.6 min ( 898.1 - 865.5 )VolumeInvertAvail.StorageStorage Description #1307.00'656 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)307.0070300 307.751,045656656 DeviceRouting InvertOutlet Devices #1Primary307.70'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded307.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.10 cfs @ 12.50 hrs HW=307.56' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.10 cfs)Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=307.00' (Free Discharge)1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs)Summary for Pond 4aP: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.81" for 100-Year event Inflow=1.00 cfs @ 11.91 hrs, Volume=0.018 af Outflow=0.99 cfs @ 11.91 hrs, Volume=0.018 af, Atten= 1%, Lag= 0.3 min Discarded=0.03 cfs @ 11.91 hrs, Volume=0.006 af Primary=0.95 cfs @ 11.91 hrs, Volume=0.012 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 304.64' @ 11.91 hrs Surf.Area= 319 sf Storage= 101 cf Plug-Flow detention time= 12.0 min calculated for 0.018 af (100% of inflow)Center-of-Mass det. time= 12.0 min ( 737.3 - 725.3 ) Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC VolumeInvertAvail.StorageStorage Description #1304.00'141 cf Custom Stage Data (Prismatic) Listed below (Recalc) x 2 ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)304.00000 304.751887171 DeviceRouting InvertOutlet Devices #1Primary304.55'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded304.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 11.91 hrs HW=304.64' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.03 cfs)Primary OutFlow Max=0.95 cfs @ 11.91 hrs HW=304.64' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 0.95 cfs @ 0.74 fps)Summary for Pond 4bP: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 0.55" for 100-Year event Inflow=0.95 cfs @ 11.91 hrs, Volume=0.012 af Outflow=0.93 cfs @ 11.92 hrs, Volume=0.012 af, Atten= 2%, Lag= 0.6 min Discarded=0.05 cfs @ 11.92 hrs, Volume=0.005 af Primary=0.88 cfs @ 11.92 hrs, Volume=0.007 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 303.88' @ 11.92 hrs Surf.Area= 474 sf Storage= 150 cf Plug-Flow detention time= 14.5 min calculated for 0.012 af (100% of inflow)Center-of-Mass det. time= 14.5 min ( 732.7 - 718.2 )VolumeInvertAvail.StorageStorage Description #1303.25'211 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)303.25000 304.00563211211 DeviceRouting InvertOutlet Devices #1Primary303.80'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded303.25'4.615 in/hr Exfiltration over Surface area Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.05 cfs @ 11.92 hrs HW=303.88' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.05 cfs)Primary OutFlow Max=0.87 cfs @ 11.92 hrs HW=303.88' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 0.87 cfs @ 0.72 fps)Summary for Pond 4P: Vegetated Swale Inflow Area =0.269 ac,11.78% Impervious, Inflow Depth = 1.77" for 100-Year event Inflow=1.05 cfs @ 11.90 hrs, Volume=0.040 af Outflow=1.03 cfs @ 11.91 hrs, Volume=0.040 af, Atten= 1%, Lag= 0.4 min Discarded=0.03 cfs @ 11.91 hrs, Volume=0.022 af Primary=1.00 cfs @ 11.91 hrs, Volume=0.018 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 307.64' @ 11.91 hrs Surf.Area= 320 sf Storage= 102 cf Plug-Flow detention time= 18.1 min calculated for 0.040 af (100% of inflow)Center-of-Mass det. time= 18.1 min ( 870.8 - 852.8 )VolumeInvertAvail.StorageStorage Description #1307.00'141 cf Custom Stage Data (Prismatic) Listed below (Recalc) x 4 ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)307.00000 307.75943535 DeviceRouting InvertOutlet Devices #1Primary307.55'15.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded307.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.03 cfs @ 11.91 hrs HW=307.64' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.03 cfs)Primary OutFlow Max=1.00 cfs @ 11.91 hrs HW=307.64' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 1.00 cfs @ 0.75 fps)Summary for Pond 5P: Vegetated Retention Area Inflow Area =1.492 ac,6.50% Impervious, Inflow Depth = 1.62" for 100-Year event Inflow=2.32 cfs @ 12.18 hrs, Volume=0.201 af Outflow=2.06 cfs @ 12.26 hrs, Volume=0.201 af, Atten= 11%, Lag= 4.7 min Discarded=0.29 cfs @ 12.26 hrs, Volume=0.140 af Primary=1.77 cfs @ 12.26 hrs, Volume=0.061 af Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 300.97' @ 12.26 hrs Surf.Area= 2,707 sf Storage= 1,313 cf Plug-Flow detention time= 31.1 min calculated for 0.201 af (100% of inflow)Center-of-Mass det. time= 31.1 min ( 910.2 - 879.1 )VolumeInvertAvail.StorageStorage Description #1300.00'1,396 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)300.00000 301.002,7921,3961,396 DeviceRouting InvertOutlet Devices #1Primary300.80'10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded300.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.29 cfs @ 12.26 hrs HW=300.97' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.29 cfs)Primary OutFlow Max=1.77 cfs @ 12.26 hrs HW=300.97' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 1.77 cfs @ 1.05 fps)Summary for Pond 7P: Vegetated Retention Area Inflow Area =0.872 ac,16.80% Impervious, Inflow Depth = 1.93" for 100-Year event Inflow=2.68 cfs @ 12.01 hrs, Volume=0.140 af Outflow=1.79 cfs @ 12.09 hrs, Volume=0.140 af, Atten= 33%, Lag= 4.7 min Discarded=0.40 cfs @ 12.09 hrs, Volume=0.125 af Primary=1.39 cfs @ 12.09 hrs, Volume=0.015 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 298.84' @ 12.09 hrs Surf.Area= 3,748 sf Storage= 1,573 cf Plug-Flow detention time= 31.8 min calculated for 0.140 af (100% of inflow)Center-of-Mass det. time= 31.8 min ( 887.2 - 855.4 )VolumeInvertAvail.StorageStorage Description #1298.00'2,233 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)298.00000 299.004,4652,2332,233 Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC DeviceRouting InvertOutlet Devices #1Primary298.80'70.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded298.00'4.615 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.40 cfs @ 12.09 hrs HW=298.84' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.40 cfs)Primary OutFlow Max=1.39 cfs @ 12.09 hrs HW=298.84' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 1.39 cfs @ 0.50 fps)Summary for Pond 8P: Vegetated Retention Area Inflow Area =1.945 ac,10.03% Impervious, Inflow Depth = 0.94" for 100-Year event Inflow=2.56 cfs @ 12.10 hrs, Volume=0.153 af Outflow=0.49 cfs @ 12.64 hrs, Volume=0.153 af, Atten= 81%, Lag= 32.5 min Discarded=0.28 cfs @ 12.64 hrs, Volume=0.144 af Primary=0.21 cfs @ 12.64 hrs, Volume=0.009 af Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs Peak Elev= 296.84' @ 12.64 hrs Surf.Area= 5,985 sf Storage= 2,516 cf Plug-Flow detention time= 94.4 min calculated for 0.153 af (100% of inflow)Center-of-Mass det. time= 94.4 min ( 963.0 - 868.6 )VolumeInvertAvail.StorageStorage Description #1296.00'3,559 cf Custom Stage Data (Prismatic) Listed below (Recalc)ElevationSurf.AreaInc.StoreCum.Store (feet)(sq-ft)(cubic-feet)(cubic-feet)296.00000 297.007,1183,5593,559 DeviceRouting InvertOutlet Devices #1Primary296.80'10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 #2Discarded296.00'2.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.28 cfs @ 12.64 hrs HW=296.84' (Free Discharge)2=Exfiltration (Exfiltration Controls 0.28 cfs)Primary OutFlow Max=0.21 cfs @ 12.64 hrs HW=296.84' (Free Discharge)1=Broad-Crested Rectangular Weir (Weir Controls 0.21 cfs @ 0.51 fps) Type II 24-hr 100-Year Rainfall=5.40"06075.03 130702 Post Prepared by Jarrett Engineers, PLLC HydroCAD® 10.00 s/n 01268 © 2013 HydroCAD Software Solutions LLC Summary for Link 1L: Design Pt Analysis (East Property Line)Inflow Area =17.186 ac,2.97% Impervious, Inflow Depth = 1.06" for 100-Year event Inflow=8.05 cfs @ 12.39 hrs, Volume=1.518 af Primary=8.05 cfs @ 12.39 hrs, Volume=1.518 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-60.00 hrs, dt= 0.01 hrs APPENDIX 7 G-1 Stormwater Pond/Wetland Operation, Maintenance and Management Inspection Checklist Project ___________________________________________________________________________ Location: ___________________________________________________________________________ Site Status: ___________________________________________________________________________ Date: ___________________________________________________________________________ Time: ___________________________________________________________________________ Inspector: ___________________________________________________________________________ Maintenance Item Satisfactory/ Unsatisfactory Comments 1. Embankment and emergency spillway (Annual, After Major Storms) 1. Vegetation and ground cover adequate 2. Embankment erosion 3. Animal burrows 4. Unauthorized planting 5. Cracking, bulging, or sliding of dam a. Upstream face b. Downstream face c. At or beyond toe downstream upstream d. Emergency spillway 6.Pond, toe & chimney drains clear and functioning 7.Seeps/leaks on downstream face 8.Slope protection or riprap failure 9. Vertical/horizontal alignment of top of dam As-Built A ppendix G: Maintenance Inspection Checklists New York State Stormwater Management Design Manual Appendix G G-2 Maintenance Item Satisfactory/ Unsatisfactory Comments 10. Emergency spillway clear of obstructions and debris 11. Other (specify) 2. Riser and principal spillway (Annual) Type: Reinforced concrete ______ Corrugated pipe _______ Masonry _______ 1. Low flow orifice obstructed 2. Low flow trash rack. a. Debris removal necessary b. Corrosion control 3. Weir trash rack maintenance a. Debris removal necessary b. corrosion control 4. Excessive sediment accumulation insider riser 5. Concrete/masonry condition riser and barrels a. cracks or displacement b. Minor spalling (<1" ) c. Major spalling (rebars exposed) d. Joint failures e. Water tightness 6. Metal pipe condition 7. Control valve a. Operational/exercised b. Chained and locked 8. Pond drain valve a. Operational/exercised b. Chained and locked 9. Outfall channels functioning 10. Other (specify) New York State Stormwater Management Design Manual Appendix G G-3 Maintenance Item Satisfactory/ Unsatisfactory Comments 3. Permanent Pool (Wet Ponds) (monthly) 1. Undesirable vegetative growth 2. Floating or floatable debris removal required 3. Visible pollution 4. Shoreline problem 5. Other (specify) 4. Sediment Forebays 1.Sedimentation noted 2. Sediment cleanout when depth < 50% design depth 5. Dry Pond Areas 1. Vegetation adequate 2. Undesirable vegetative growth 3. Undesirable woody vegetation 4. Low flow channels clear of obstructions 5. Standing water or wet spots 6. Sediment and / or trash accumulation 7. Other (specify) 6. Condition of Outfalls (Annual , After Major Storms) 1. Riprap failures 2. Slope erosion 3. Storm drain pipes 4.Endwalls / Headwalls 5. Other (specify) 7. Other ( Monthly) 1. Encroachment on pond, wetland or easement area New York State Stormwater Management Design Manual Appendix G G-4 Maintenance Item Satisfactory/ Unsatisfactory Comments 2. Complaints from residents 3.Aesthetics a. Grass growing required b. Graffiti removal needed c. Other (specify) 4. Conditions of maintenance access routes . 5. Signs of hydrocarbon build-up 6. Any public hazards (specify) 8. Wetland Vegetation (Annual) 1. Vegetation healthy and growing Wetland maintaining 50% surface area coverage of wetland plants after the second growing season. (If unsatisfactory, reinforcement plantings needed) 2. Dominant wetland plants: Survival of desired wetland plant species Distribution according to landscaping plan? 3. Evidence of invasive species 4. Maintenance of adequate water depths for desired wetland plant species 5. Harvesting of emergent plantings needed 6. Have sediment accumulations reduced pool volume significantly or are plants choked with sediment 7. Eutrophication level of the wetland. 8. Other (specify) Comments: New York State Stormwater Management Design Manual Appendix G G-5 Actions to be Taken: New York State Stormwater Management Design Manual Appendix G G-6 Infiltration Trench Operation, Maintenance, and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS 1. Debris Cleanout (Monthly) Trench surface clear of debris Inflow pipes clear of debris Overflow spillway clear of debris Inlet area clear of debris 2. Sediment Traps or Forebays (Annual) Obviously trapping sediment Greater than 50% of storage volume remaining 3. Dewatering (Monthly) Trench dewaters between storms 4. Sediment Cleanout of Trench (Annual) No evidence of sedimentation in trench Sediment accumulation doesn =t yet require cleanout 5. Inlets (Annual) New York State Stormwater Management Design Manual Appendix G G-7 M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS Good condition No evidence of erosion 6. Outlet/Overflow Spillway (Annual) Good condition, no need for repair No evidence of erosion 7. Aggregate Repairs (Annual) Surface of aggregate clean Top layer of stone does not need replacement Trench does not need rehabilitation Comments: Actions to be Taken: New York State Stormwater Management Design Manual Appendix G G-8 Sand/Organic Filter Operation, Maintenance and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS 1. Debris Cleanout (Monthly) Contributing areas clean of debris Filtration facility clean of debris Inlet and outlets clear of debris 2. Oil and Grease (Monthly) No evidence of filter surface clogging Activities in drainage area minimize oil and grease entry 3. Vegetation (Monthly) Contributing drainage area stabilized No evidence of erosion Area mowed and clipping removed 4. Water Retention Where Required (Monthly) Water holding chambers at normal pool No evidence of leakage 5. Sediment Deposition (Annual) New York State Stormwater Management Design Manual Appendix G G-9 M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS Filter chamber free of sediments Sedimentation chamber not more than half full of sediments 6. Structural Components (Annual) No evidence of structural deterioration Any grates are in good condition No evidence of spalling or cracking of structural parts 7. Outlet/Overflow Spillway (Annual) Good condition, no need for repairs No evidence of erosion (if draining into a natural channel) 8. Overall Function of Facility (Annual) Evidence of flow bypassing facility No noticeable odors outside of facility Comments: Actions to be Taken: New York State Stormwater Management Design Manual Appendix G G-10 Bioretention Operation, Maintenance and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS 1. Debris Cleanout (Monthly) Bioretention and contributing areas clean of debris No dumping of yard wastes into practice Litter (branches, etc.) have been removed 2. Vegetation (Monthly) Plant height not less than design water depth Fertilized per specifications Plant composition according to approved plans No placement of inappropriate plants Grass height not greater than 6 inches No evidence of erosion 3. Check Dams/Energy Dissipaters/Sumps (Annual, After Major Storms) No evidence of sediment buildup New York State Stormwater Management Design Manual Appendix G G-11 M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS Sumps should not be more than 50% full of sediment No evidence of erosion at downstream toe of drop structure 4. Dewatering (Monthly) Dewaters between storms No evidence of standing water 5. Sediment Deposition (Annual) Swale clean of sediments Sediments should not be > 20% of swale design depth 6. Outlet/Overflow Spillway (Annual, After Major Storms) Good condition, no need for repair No evidence of erosion No evidence of any blockages 7. Integrity of Filter Bed (Annual) Filter bed has not been blocked or filled inappropriately New York State Stormwater Management Design Manual Appendix G G-12 Comments: Actions to be Taken: New York State Stormwater Management Design Manual Appendix G G-13 Open Channel Operation, Maintenance, and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS 1. Debris Cleanout (Monthly) Contributing areas clean of debris 2. Check Dams or Energy Dissipators (Annual, After Major Storms) No evidence of flow going around structures No evidence of erosion at downstream toe Soil permeability Groundwater / bedrock 3. Vegetation (Monthly) Mowing done when needed Minimum mowing depth not exceeded No evidence of erosion Fertilized per specification 4. Dewatering (Monthly) Dewaters between storms New York State Stormwater Management Design Manual Appendix G G-14 M AINTENANCE I TEM S ATISFACTORY / U NSATISFACTORY C OMMENTS 5. Sediment deposition (Annual) Clean of sediment 6. Outlet/Overflow Spillway (Annual) Good condition, no need for repairs No evidence of erosion Comments: Actions to be Taken: APPENDIX 8 SWPPP Inspection Report Date:Project #:Inspector NameSignatureDate of Inspection Inspection Number: YesNoRoutine Inspection. Date of last inspection:YesNoInspection following rain event. Date/time of storm ending:YesNoRainfall amount: Recorded by:YesNoIs this a final site inspection?YesNoHas site undergone final stabilization?YesNoIf so, have all temporary erosion and sediment controls been removed?REPORT CHECKLIST Complete the following report checklist and key issue items to attached site plan. 1. Site Disturbance (Indicate Locations on Plan)YesNo1.1 Areas previously disturbed, but not undergone active site work in the last 14 days?YesNo1.2 Areas disturbed within the last 14 days?YesNo1.3 Areas expected to be disturbed in next 14 days?YesNo1.4 Do areas of steep slopes or complex stabilizations issues exist?Comments: 2. Inspection of Control Devices YesNo2.1 Perimeter controls (silt fences) installed?YesNo2.2 Silt accumulation? Amount %YesNo2.3 Inlet protection YesNo2.4 Silt accumulations? Amount %Comments: SWPPP Inspection Report Date:JM Project #:Inspection Number: Continued Page 2 3. Stabilization YesNo3.1 Are all existing disturbed areas contained by control devises?YesNo3.2 Are there areas which require stabilization within the next 14 days?YesNo3.3 Have permanent or temporary stabilization measures been implemented where work has ceased for 14-21 days?YesNo3.4 Is there current snow cover or frozen ground conditions?YesNo3.5 Rills or gullies?YesNo3.6 Slumping/deposition?YesNo3.7 Loss of vegetation?YesNo3.8 Lack of germination?YesNo3.9 Loss mulching?YesNoAction Items: 4. Receiving Structures/Water Bodies YesNo4.1 Indicate locations where runoff leaves the project site on the site plan.YesNoSEE PLANS YesNo4.2 Surface water swale or stream?YesNo4.3 Municipal or community system?YesNo4.4 Indicate drainage pathways. Inspect locations where runoff from project site enters the receiving ways and indicate if there is evidence of:YesNo4.5 Rills or gullies?YesNo4.6 Slumping/disposition?YesNo4.7 Loss of vegetation?YesNo4.8 Undermining of structures?YesNoAction Items SWPPP Inspection Report Date:JM Project #:Inspection Number: Continued Page 3 5. General Site Condition YesNo5.1 Has actions from previous reports been addressed?YesNo5.2 Contractors summary on pertinent progress last 7 days YesNo5.3 Anticipated work to be begun in the next 7 days?YesNo5.4 Does routine maintenance of protection components occur on a regular basis?YesNo5.5 Does cleaning and/or sweeping affected roadways occur daily or more frequently?YesNo5.6 Is debris and litter removed on a monthly basis or as necessary?YesNo5.7 Is the site maintained in an orderly manner? Comments: SUMMARY OF ACTION ITEMS:Action:1 2 3 4 5 6 7 Action Reported To:Company:Received by (Signature): APPENDIX 9 NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES from CONSTRUCTION ACTIVITY Permit No.GP-O-IO-00 I Issued Pursuant to Article 17,Titles 7.8 and Article 70 of the Environmental Conservation Law Effective Date:January 29,2010 William R.Adriance Chief Pennit Administrator Expiration Date:January 28,2015 Address:NYS DEC Div.Environmental Permits 625 Broadway,4th Floor Albany,N.Y.12233-1750 I 2 PREFACE Pursuant to Section 402 of the Cl ean Water Act (“CWA”), stormwater discharges from certain construction activities are unlawful unless they are authorized by a National Pollutant Discharge Elimination System (“NPDES”) permit or by a state permit program. New York’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 Stat e 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.gov/ An owner or operator of a construction activity that is eligible for coverage under this permit must obtain coverage prior to the commencement of construction activity . Activities that fit the definition of “construction activity ”, as defined under 40 CFR 122.26 (b)(14)(x), (15)(i), and (15)(ii), constitute construction of a point source and therefore, pursuant to Article 17-0505 of the ECL, the owner or operator must have coverage under a SPDES permit prior to commencing construction activity . They cannot wait until there is an actual discharge from the construction site to obtain permit coverage. *Note: The italicized words/phrases within this permit are defined in Appendix A. 3 NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES GENERAL PERMIT FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES TABLE OF CONTENTS Part I. PERMIT COVER AGE AND LIMITATIONS ....................................................................... 5  A. Permit Application .................................................................................................................... 5  B. Maintaining Water Quality ........................................................................................................ 5  C. Eligibility Under This General Permit ...................................................................................... 5  D. Activities Which Are Ineligible for C overage Under This General Permit .............................. 6  Part II. OBTAINING PERMIT COVERAGE .................................................................................. 7  A. Notice of Intent (NOI) Submittal .............................................................................................. 7  B. Permit Authorization ................................................................................................................. 8  C. General Requirements For Owners or Operators With Permit Coverage ................................. 9  D. Permit Coverage for Discharges Authorized Under GP-0-08-001 ......................................... 11  E. Change of Owner or Operator ................................................................................................. 11  Part III. STORMWATER POLLUTI ON PREVENTION PLAN (SWPPP) ................................... 11  A. General SWPPP Requirements ............................................................................................... 1 1  B. Required SWPPP Contents ..................................................................................................... 14  C. Required SWPPP Compone nts by Project Type ..................................................................... 18  Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS ............................................. 18  A. General Construction Site Inspec tion and Maintenance Requirements .................................. 18  B. Owner or Operator Maintena nce Inspection Requirements .................................................... 18  C. Qualified Inspector Inspection Requirements ......................................................................... 19  Part V. TERMINATION OF PERMIT COVERAGE ..................................................................... 22  A. Termination of Permit Coverage ............................................................................................. 22  Part VI. REPORTING AND R ETENTION OF RECORDS ........................................................... 24  A. Record Retention ..................................................................................................................... 24  B. Addresses ................................................................................................................................ 24  Part VII. STANDARD PERMIT CONDITIONS ........................................................................... 24  A. Duty to Comply ....................................................................................................................... 24  B. Continuation of the Expired General Permit ........................................................................... 25  C. Enforcement ............................................................................................................................ 25  D. Need to Halt or Reduce Activity Not a Defense ..................................................................... 25  E. Duty to Mitigate ...................................................................................................................... 25  F. Duty to Provide Information .................................................................................................... 25  G. Other Information ................................................................................................................... 25  H. Signatory Requirements .......................................................................................................... 26  I. Property Rights ......................................................................................................................... 27  J. Severability ............................................................................................................................... 27  K. Denial of Coverage Under This Permit ................................................................................... 28  L. Proper Operation and Maintenance ......................................................................................... 28  M. Inspection and Entry ............................................................................................................... 28  N. Permit Actions......................................................................................................................... 29  O. Definitions ............................................................................................................................... 29   P. Re-Opener Clause .................................................................................................................... 29  Q. Penalties for Falsificati on of Forms and Reports .................................................................... 29  R. Other Permits........................................................................................................................... 29  APPENDIX A .................................................................................................................................. 30  APPENDIX B .................................................................................................................................. 35  APPENDIX C .................................................................................................................................. 37  APPENDIX D .................................................................................................................................. 42  APPENDIX E .................................................................................................................................. 43  APPENDIX F................................................................................................................................... 45   4 5 Part I. PERMIT COVE RAGE AND LIMITATIONS A. Permit Application - This permit authorizes stormwater discharges to surface waters of the State from the following construction activities identified within 40 CFR Parts 122.26(b)(14)(x), 122.26(b)(15)(i) and 122.26(b)(15)(ii), provided all of the eligibility provisions of this permit are met: 1. Construction activities involving soil disturbances of one (1) or more acres; including disturbances of less th an one acre that are part of a larger common plan of development or sale that will ultimately disturb one or more acres of land; excluding routine maintenance activity that is performed to maintain the original line and grade, hydraulic capacity or original purpose of a facility; 2. Construction activities involving soil disturbances of less than one (1) acre where the Department has determined that a SPDES permit is required for stormwater discharges based on the potential for cont ribution to a violation of a water quality standard or for significant contribution of pollutants to surface waters of the State. 3. Construction activities located in the watershed(s) identified in Appendix D that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land. B. Maintaining Water Quality - It shall be a violati on of this permit and the ECL for any discharge to either cause or cont ribute 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 turbidit y that will cause a substantial visible contrast to natural conditions; 2. There shall be no increase in suspended, co lloidal or settleable solids that will cause deposition or impair the wa ters for their best usages; and 3. There shall be no residue from oil and fl oating substances, nor visible oil film, nor globules of grease. C. Eligibility Under This General Permit 1. This permit may authorize all discharges of stormwater from construction activity to surface waters of the State and groundwaters except for ineligible discharges identified under subparagraph D. of this Part. 2. Except for non-stormwater discharges explicitly listed in the next paragraph, this permit only authorizes stormwater discharges from construction activities . 6 (Part I. C) 3. Notwithstanding paragraphs C.1 and C .2 above, the following non-stormwater discharges may be authorized by this permit: discharges from fire fighting 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 su ch as solvents. For those entities required to obtain coverage under this permit, and who discharge as noted in this paragraph, and with th e exception of flows from fire fighting 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 I.B. D. Activities Which Are Ineligible fo r Coverage Under This General Permit - All of the following are not authorized by this permit: 1. Discharges after construction activities have been completed and the site has undergone final stabilization ; 2. Discharges that are mixed with sources of non-stormwater other than those expressly authorized under subsection C.3. of this Pa rt 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, subparagraph K of this permit; 4. Discharges from construction activities that adversely affect a listed, or proposed to be listed, endangered or threat ened species, or its critical habitat; 5. Discharges which either cause or contribu te 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 that: a. are tributary to waters of the state classified as AA or AA-s; and 7 (Part I. D. 6) b. disturb one or more acres of land with no existing impervious cover and where the Soil Slope Phase is identified as an E or F on the USDA Soil Survey for the County in which the disturbance will occur. 7. Construction activities for linear transportation projects and linear utility projects that: a. are tributary to waters of the state classified as AA or AA-s; and b. disturb two or more acres of land wi th no existing impervious cover and where the Soil Slope Phase is identified as an E or F on the USDA Soil Survey for the County in which the disturbance will occur. 8. Construction activities that adversely affect a property that is listed or is eligible for listing on the State or National Register of Historic Places (Note: includes Archeological sites), unless there are writt en agreements in place with the NYS Office of Parks, Recreation and Historic Preservation (OPRHP) or other governmental agencies to mitigate the effects, or there are local land use approvals evidencing the same. Part II. OBTAINING PERMIT COVERAGE A. Notice of Intent (NOI) Submittal 1. An owner or operator of a construction activity that is not subject to the requirements of a regulated, traditional land use control MS4 must first develop a SWPPP in accordance with all applicable requirements of this permit and then submit a completed NOI form to the address below in order to be authorized to discharge under this permit. The NOI form shall be one which is associated with this permit, signed in accordance with Part VII.H. of this permit. NOTICE OF INTENT NYS DEC, Bureau of Water Permits 625 Broadway, 4 th Floor Albany, New York 12233-3505 2. An owner or operator of a construction activity that is subject to the requirements of a regulated, traditional land use control MS4 must first develop a SWPPP in accordance with all applicable requirements of this permit and then have its SWPPP reviewed and accepted by the MS4 prior to submitting the NOI to the Department. The owner or operator shall have the “MS4 SWPPP Acceptance” form signed by the principal executive officer or ranking elected official from the regulated, traditional land use control MS4 , or by a duly authorized representative of that pers on, and then submit that form along with the NOI to the address referenced unde r “Notice of Intent (NOI) Submittal”. 8 (Part II. A .2 ) This requirement does not apply to an owner or operator that is obtaining permit coverage in accordance with the requirements in Part II.E. (Change of Owner or Operator). 3 . The owner or operator shall have the SWPPP preparer sign the “SWPPP Preparer Certification” statement on the NOI prior to submitting the form to the Department. 4 . As of the date the NOI is submitted to the Department, the owner or operator shall make the NOI and SWPPP available for review and copying in accordance with the requirements in Pa rt VII.F. of this permit. B. Permit Authorization 1. An owner or operator shall not commence construction activity until their authorization to discharge under this permit goes into effect. 2. Authorization to discharge under this permit will be effective when the owner or operator has satisfied all of the following criteria: a. project review pursuant to the Stat e Environmental Quality Review Act (SEQRA) have been satisfied, when SEQRA is applicable, 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 Regional Office 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. an NOI has been submitted to the Department in accordance with the requirements of this permit. 3. An owner or operator that has satisfied the require ments of Part II.B.2 above will be authorized to discharge stormwater from their construction activity in accordance with the following schedule: 9 (Part II. B. 3) 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 NOI for construction activities with a SWPPP that has been prepared in c onformance with the technical standards referenced in Part s III.B.1, 2 and/or 3, or ii. Sixty (60) business days from the date the Department receives a complete NOI for construction activities with a SWPPP that has not been prepared in conformance with the technical standards referenced in Parts III.B.1, 2 or 3. b. For construction activities that are subject to the requirements of a regulated, traditional land use control MS4 : i. Five (5) business days from the date the Department receives a complete NOI and signed “MS4 SWPPP Acceptance” form, 4. The Department may suspend or deny an owner’s or operator’s coverage under this permit if the Department determin es that the SWPPP does not meet the permit requirements. 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 subm it a new NOI that addresses that phase of the development, unless otherw ise notified by the Department. C. General Requirements For Owners or Operators With Permit Coverage 1. The owner or operator shall ensure that the pr ovisions 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. 2. The owner or operator shall maintain a copy of the General Permit (GP-0-10-001), NOI, NOI Acknowledgment Letter , SWPPP, MS4 SWPPP Acceptance form and inspection reports at the constr uction site until all disturbed areas have achieved final stabilization and the NOT has been submitted to the Department. 10 (Part II. C. 2) The documents must be maintained in a secure location, such as a job trailer, on-site construction office, or mailbox w ith 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 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: a. The owner or operator shall have a qualified inspector conduct at least two (2) site inspections in accordance with Part IV.C. every seven (7) calendar days, for as long as greate r than five (5) acres of soil remain disturbed. The two (2) inspections sh all be separated by a minimum of two (2) full calendar days. b. 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 confor mance with the most current version of the technical standard, New York State Standards and Specifications for Erosion and Sediment Control. c. The owner or operator shall prepare a phasing plan that defines maximum disturbed area pe r 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. The Department may suspend or revoke an owner’s or operator’s coverage under this permit at any time if the Depa rtment determines that the SWPPP does not meet the permit requirements. 11 (Part II. C) 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 MS4 in writing of any planned amendments or modifications to the post-construction stormwater management practice component of the SWPPP required by Part III.A. 4. and 5. of this permit. Unless otherwise notified by the MS4, the owner or operator shall have the SWPPP amendments or modifications reviewed and accepted by the MS4 prior to commencing construc tion of the post-construction stormwater management practice. D. Permit Coverage for Discharg es Authorized Under GP-0-08-001 1. Upon renewal of SPDES General Permit for Stormwater Discharges from Construction Activity (Per mit No. GP-0-08-001), a n owner or operator of construction activity with coverage under GP-0-08-001, as of the effective date of GP-0-10-001, shall be authorized to discharge in accordance with GP-0-10-001 unless otherwise notified by the Department. E. Change of Owner or Operator 1. When property ownership changes or when there is a change in operational control over the constr uction plans and specifi cations, 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 a completed NOT with the name and permit identification number of the new owner or operator to the Department at the address in Part II.A.1.. If the original owner or operator maintains ownership of a portion of the construction activity and will disturb soil, they mu st 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 comple te NOI, provided the original owner or operator was not subject to a sixty (60) bus iness day authoriz ation period that has not expired as of the date the Depa rtment receives the NOI from the new owner or operator . Part III. STORMWATER POLLUT ION PREVENTION PLAN (SWPPP ) A. General SWPPP Requirements 1. 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 . 12 (Part III. A) 2. The SWPPP shall describe the erosion a nd sediment control practices and where required, post-construction stormwater mana gement practices that will be used and/or constructed to reduce the pollutan ts in stormwater discharges and to assure compliance with the terms and condi tions 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-constr uction stormwater management practice component shall be prepared by a qualified professional that is knowledgeable in the principles and practices of st ormwater management and treatment. 4. The owner or operator must keep the SWPPP current so that it at all times accurately documents the erosion and sedime nt controls practices that are being used or will be used during construc tion, and all post-construction stormwater management practices that will be cons tructed 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 desi gn, 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 othe r regulatory authority. 5. The Department may notify the owner or operator at any time that the SWPPP does not meet one or more of the minimum requirements of this permit. The notification shall be in writing and id entify 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. 6. Prior to the commencement of construction activity , the owner or operator must identify the contractor(s) and subcontr actor(s) that will be responsible for installing, constructing, repairing, repl acing, inspecting and maintaining the erosion and sediment control practic es 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. 13 (Part III. A. 6) The owner or operator shall have each of the co ntractors 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 co ntractors and subcontractors identified above sign a copy of the following certification statement below before they commence any construction activity : "I hereby certify that I understand and agree to co mply 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 versio n 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, inco rrect or inaccurate information is a violation of the referenced permit and th e laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. " In addition to providing the certification statement a bove, the certification page must also identify the specific elements of the SWPPP that each contractor and subcontractor will be responsible for and include the name and title of the person providing the signature; the name and title of the trained contractor responsible for SWPPP implementation; the name, address and telephone number of the contracting firm; the address (or other iden tifying 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 cont ractors 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 reque sts 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. 8. The SWPPP must include documentati on supporting the determination of permit eligibility with rega rd to Part I.D.8. (Historic Places or Archeological Resource). At a minimum, the supporti ng documentation shall include the following: 14 (Part III. A. 8) a. Information on whether the stormwater discharge or construction activities would have an effect on a prope rty (historic or archeological resource) that is listed or eligible for listing on the State or National Register of Historic Places; b. Results of historic resources screening determinations conducted. Information regarding the location of hi storic places listed, or eligible for listing, on the State or National Registers of Historic Places and areas of archeological sensitivity that may indicate the need for a survey can be obtained online by viewing the New York State Office of Parks, Recreation and Historic Places (OPRHP) online resources located on their web site at: http://nysparks.state.ny.us/shpo/online-tools/ (using The Geographic Information System for Ar cheology and National Register). OPRHP can also be contacted a t: NYS OPRHP, State Historic Preservation Office, Peebles Isla nd Resources Center, P.O. Box 189, Waterford, NY 12188-0189, phone: 518-237-8643; c. A description of measures necessary to avoid or minimize adverse impacts on places listed, or eligible for listing, on the State or National Register of Historic Places. If the owner or operator fails to describe and implement such measures, the stormwater discharge is ineligible for coverage under this permit; and d. Where adverse effects may occur, any written agreements in place with OPRHP or other governmental agency to mitigate those effects, or local land use approvals evidencing the same. B. Required SWPPP Contents 1. Erosion and sediment control componen t - All SWPPPs prepared pursuant to this permit shall include erosion and sediment control practices designed in conformance with the most current version of the technical standard, New York State Standards and Specifications for Erosion and Sediment Control. Where erosion and sediment control practices are not designed in conformance with this 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 sh all include the following: a. Background information about the scope of the project, including the location, type and size of project; 15 ( Part III. B. 1) 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 ad jacent off-site surface water(s), wetlands and drainage patterns that c ould be affected by the construction activity; existing and final slopes; 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 ac tivities, including clearing and grubbing, excavation and grading, utility and infrastructure installation and any other activity at the site th at 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 the most current vers ion of the technical standard, New York State Standards and Specificat ions for Erosion and Sediment Control, for each stage of the projec t, including initial land clearing and grubbing to project completion and ach ievement of final stabilization; g. A site map/construction drawing(s) showing the specific location(s), size(s), and length(s) of each erosi on and sediment control practice; h. The dimensions, material specifi cations, installation details, and operation and maintenance requiremen ts for all erosion and sediment control practices. Include the loca tion and sizing of any temporary sediment basins and structural practices that will be used to divert flows from exposed soils; 16 ( Part III. B. 1) i. A maintenance inspection sche dule for the contractor(s) identified in Part III.A.6., to ensure continuous and effective operation of the erosion and sediment control practices. Th e maintenance inspection schedule shall be in accordance with the requ irements in the most current version of the technical standard, New York State Standards and Specifications for Erosion and Sedi ment Control; j. A description of the pollution prevention measures that will be used to control litter, construction chemi cals and construction debris from becoming a pollutant source in the stormwater discharges ; k. A description and locati on of any stormwater discharges associated with industrial activity other than construc tion at the site, including, but not limited to, stormwater discharges from asphalt plants and concrete plants located on the construction site; and l. Identification of any elements of th e design that are not in conformance with the requirements in the most current version of the technical standard, New York State Standards and Specifications for Erosion and Sediment Control. Include the reason for the deviation or alternative design and provide information which de monstrates that the deviation or alternative design is equivalent to the technical standards. 2. Post-construction stormwater mana gement practice component - All construction projects identified in Ta ble 2 of Appendix B as needing post-construction stormwater management pr actices shall prepare a SWPPP that includes practices designed in conformanc e with the most current version of the technical standard, New York State Stormwater Management Design Manual (“Design Manual”). If the Design Manual is revised during the term of this permit, an owner or operator must begin using the revi sed version of the Design Manual to prepare their SWPPP six (6) m onths from the final revision date of the Design Manual. Where post-construction stormwater manage ment practices are not designed in conformance with this technical standard, the owner or operator must demonstrate equivalence to the technical standard. At a minimum, the post-construction stormwater management practice component of the SWPPP sh all include the following: a. Identification of all post-constructio n stormwater management practices to be constructed as part of the project; 17 (Part III. B. 2) b. A site map/construction drawing(s) showing the specific location and size of each post-construction stormwater management practice; c. The dimensions, material specificati ons and installation details for each post-construction stormwater management practice; d. Identification of any elements of th e design that are not in conformance with the Design Manual. Include the reason for the deviation or alternative design and provide inform ation which demonstrates that the deviation or alternative design is equi valent to the technical standards; e. A hydrologic and hydraulic analysis for all structural components of the stormwater management control system; f. A detailed summary (including calculat ions) of the sizing criteria that was used to design all post-cons truction stormwater management practices. At a minimum, the summar y shall address the required design criteria from the applicable chapte r of the Design Manual; including the identification of and justification for any deviations from the Design Manual, and identification of any de sign criteria that are not required based on the design criteria or waiv er criteria included in the Design Manual; and g. An operations and maintenance pl an that includes inspection and maintenance schedules and actions to ensure continuous and effective operation of each post-construction st ormwater management practice. The plan shall identify the entity th at will be responsible for the long term operation and maintena nce of each practice. 3. Enhanced Phosphorus Removal Standards - All construction pr ojects identified in Table 2 of Appendix B that are locat ed in the watersheds identified in Appendix C shall prepare a SWPPP that includes post-construction stormwater management practices designed in confor mance with the 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.g. above. 18 (Part III. C) C. Required SWPPP Components by Project Type - Unless otherwis e notified by the Department, owners or operators of construction activities identified in Table 1 of Appendix B are required to pr epare a SWPPP that only incl udes erosion and sediment control practices designed in c onformance with Part III.B.1. Owners or operators of the construction activities identified in Table 2 of Appendix B shall prepare a SWPPP that also includes post-constructio n stormwater management prac tices designed in conformance with Part III.B.2 or 3. Part IV. INSPECTION AND MAINTENANCE REQUIREMENTS A. General Construction Site In spection and Maintenance Requirements 1. The owner or operator must ensure that all er osion and sediment control practices and all post-cons truction stormwater manage ment practices identified in the SWPPP are maintained in effec tive operating condition at all times. 2. The terms of this permit shall not be construed to prohibit the State of New York from exercising any authority pu rsuant to the ECL, common law or federal law, or prohibit New York St ate 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 sa fety and/or the environment. B. Owner or Operator Mainte nance Inspection Requirements 1. The owner or operator shall inspect, in accordance with the requirements in the most current version of the technical standard, New York State Standards and Specifications for Erosion and Sediment Control, the erosion and sediment controls identified in the SWPPP to ensu re that they are being maintained in effective operating c ondition at all times. 2. For construction sites where soil distur bance activities have been temporarily suspended (e.g. winter shutdown) and te mporary stabilization measures have been applied to all disturbed areas, the owner or operator can stop conducting the maintenance inspections. The owner or operator shall begin conducting the maintenance inspections in accordance with Part IV.B.1. as soon as soil disturbance activities resume. 3. For construction sites where soil distur bance activities have been shut down with partial proj ect completion, the owner or operator can stop conducting the maintenance inspections if all areas dist urbed 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. 19 (Part IV. C) C. Qualified Inspector Inspection Requirements - The owner or operator shall have a qualified inspector conduct site inspections in conformance with the following requirements: [Note: The trained contractor identified in Part III.A.6. cannot conduct the qualified inspector site inspections unless they meet the qualified inspector qualifications included in Appendix A. In order to pe rform 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 superv ision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of Depart ment endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity]. 1 . A qualified inspector shall conduct site in spections 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 si te 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 watershe ds 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 ho me 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 agricultura l property that involve s a soil disturbance of one (1) or more acres of land but less than five (5) acres; and d. construction activities located in th e watersheds identified in Appendix D that involve soil disturbances be tween five thousand (5000) square feet and one (1) acre of land. 2. Unless otherwise notified by the Department, the qualified inspector shall conduct site inspections in accordan ce with the following timetable: a. For construction sites where soil disturbance activities are on-going, the qualified inspector shall conduct a site inspec tion at least once every seven (7) calendar days. 20 (Part IV. C. 2) b. For construction sites where soil disturbance activities are on-going and the owner or operator has received authorizat ion in accordance with Part II.C.3 to disturb greater than fi ve (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. wint er shutdown) and temporary stabilization measures have been ap plied to all disturbed areas, the qualified inspector shall conduct a site inspec tion at least once every thirty (30) calendar days. The owner or operator shall notify the Regional Office stormwater contact person (see contact information in Appendix F) or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the MS4 (provided the 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 dist urbance activities have been shut down with partial project completion, the qualified inspector can stop conducting inspections if all areas di sturbed as of the project shutdown date have achieved final stabilization and all post-construction stormwater management practices re quired 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 Regional Office stormwater contact person (see contact information in Appendix F) or, in areas under the jurisdiction of a regulated, traditional land use control MS4, the MS4 (provided the MS4 is not the owner or operator of the construction activity). in wr iting prior to th e 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 certif y 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 pr actices have been constructed in conformance with the SWPPP by signing the “Final Stabilization” and “Post-Construction Stormwater Ma nagement Practice” certification statements on the NOT. The owner or operator shall then submit the completed NOT form to the address in Part II.A.1.. 21 (Part IV. C. 3) 3. At a minimum, the qualified inspector shall inspect all erosion and sediment control practices to ensure integrity and effectiveness, all post-construction stormwater management practices under construction to ensure that they are constructed in conformance with the SWPP P, 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 shal l include and/or address the following: a. Date and time of inspection; b. Name and title of person (s) performing inspection; c. A description of the weather and soil conditions (e.g. dry, wet, saturated) at the time of the inspection; d. A description of the condition of th e runoff at all points of discharge from the construction site. This sh all 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 t o, 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 sedi ment control practices that need repair or maintenance; g. Identification of all eros ion and sediment control practices that were not installed properly or are not functio ning as designed and need to be reinstalled or replaced; h. Description and sketch of areas that are disturbed at the time of the inspection and areas that have been stabilized (temporar y and/or final) since the last inspection; 22 (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 a nd technical standards; j. Corrective action(s) that must be ta ken to install, re pair, replace or maintain erosion and sediment c ontrol practices; and to correct deficiencies identified with the construction of the post-construction stormwater management practice(s); and k. Digital photographs, with date stamp, that clearly show the condition of all practices that have been identifi ed 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 th e date of the inspection. The qualified inspector shall also take digital photog raphs, with date stamp, that clearly show the condition of the prac tice(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 actio n 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 any co rrective 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 r easonable time frame. 6. All inspection reports shall be signed by the qualified inspector. Pursuant to Part II.C.2., the inspection re ports 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 Pa rt II.A.1. The NOT form shall be one which is associated with this general permit, signed in accordance with Part VII.H. 2. An owner or operator may terminate coverage when one or more the following conditions have been met: 23 (Part V. A. 2) a. Total project completion - All construction activity identified in the SWPPP has been completed; and all areas of disturbance have achieved final stabilization ; and all temporary, structural erosion and sediment control measures have been removed; and all post-construction stormwater management practices have been constructed in conformance with the SWPPP and are operational; b. Planned shutdown with partial project completion - All soil disturbance activities have ceased; and all areas disturbed as of the project shutdown date have achieved final stabilization ; and all temporary, structural erosion and sediment control measures have been removed; and all post-construction stormwater manageme nt practices required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational; c. A new owner or operator has obtained coverage under this permit in accordance with Part II.E. 3. For construction activities meeting subdivision 2a. or 2b. of this Part, the owner or operator shall have the qualified inspector perform a final site inspection prior to submitting the NOT. The qualified inspector shall, by signing the “Final Stabilization” and “Post-Construction Stormwater Management Practice” certification statements on the NOT, certi fy 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 constr ucted in conforman ce with the SWPPP. 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 also have the MS4 sign the “MS4 Acceptance” statement on the NOT. The owner or operator shall have the principal executive officer, ranking elected official, or du ly authorized representative from the regulated, traditional land use control MS4 , sign the “MS4 Acceptance” statement. The MS4 official, by signing this statement, has determined that it is acceptable for the owner or operator to submit the NOT in accordance with the requirements of this Part. The MS4 can make this determination by performing a final site inspection themselves or by accepting the qualified inspector’s final site inspection certification(s) required in Part V.3. 5. For construction activities that require post-cons truction 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: 24 (Part V. A. 5) a. the post-construction stormwater mana gement practice(s) and any right-of-way(s) needed to maintain such pr actice(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-cons truction stormwater management practice(s), c. for post-construction stormwater management practices that are privately owned, the owner or operator has modified their deed of record to include a deed covena nt that requires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan, d. for post-construction stormwater mana gement practices that are owned by a public or private institution (e.g . school, college, university), or government agency or authority, the owner or operator has policy and procedures in place that ensures operation and maintenance of the practices in accordance with the operation and maintenance plan. Part VI. REPORTING AND RETENTION OF RECORDS A. Record Retention - The owner or operator shall retain a copy of the NOI, NOI Acknowledgment Letter, SWPPP, MS4 SWP PP 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 site achieves final stabilization . This period may be extended by the Department, in its sole discre tion, at any time upon written notification. 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), all written correspondence requested by the Department, including individual pe rmit applications, shall be sent to the address of the appr opriate Department Regional Office listed in Appendix F. Part VII. STANDARD PERMIT CONDITIONS A. Duty to Comply - The owner or operator must comply with all conditions of this permit. All contractors and subcontractors asso ciated 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 contract or/subcontractor; permit revocation, suspension or modification; or denial of a permit re newal 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. 25 (Part VII. A) The stop work order shall be in writing, shal l describe the non-compliance in detail, and shall be sent to the owner or operator . B. Continuation of th e Expired General Permit - This permit expires five (5) years from the effective date. However, coverage may be obtained under the expired general permit, which will continue in force and effect, until a new general permit is issued. Unless otherwise notified by th e Department in writing, an owner or operator seeking authorization under the new gene ral permit must submit a new NOI in accordance with the terms of such new general permit. C. Enforcement - Failure of the owner or operator, its contractors, subcontractors, agents and/or assigns to strictly a dhere to any of the permit requi rements contained herein shall constitute a violation of this permit. There ar e substantial criminal, ci vil, and administrative penalties associated with viol ating the provisions of this pe rmit. Fines of up to $37,500 per day for each violation and im prisonment 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 woul d have been necessary to halt or reduce the construction activity in order to maintain compliance with the conditions of this permit. E. Duty to Mitigate - The owner or operator and its contractors a nd subcontractors shall take all reasonable steps to minimize or prevent any discharge in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. F. Duty to Provide Information - The owner or operator shall make available to the Department for review and copyi ng or furnish to the Department within five (5) business days of receipt of a Departme nt request for such information, any information requested for the purpose of determining compliance with this permit. This can include, but is not limited to, the NOI, NOI Acknowledgment Letter, SWPPP, MS4 SWPPP Acceptance form, executed maintenance agreement, and inspecti on reports. Failure to provide information requested by the Department within the request timeframe shall be a violation 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 re quest by any such person to review the NOI, SWPPP or insp ection reports. Copying of documents will be done at the request er’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 other report, or have made substantive revisions to the SWPPP (e.g. the scope of the project changes significantly, the type of post-construction stormwater mana gement practice(s) 26 (Part VII. G) changes, there is a reduction in the sizing of the post-construction stormwater management practice, or there is an increase in the distur bance 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. 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 sect ion, a responsible corporate officer means: i. a president, secretary, treasurer, or vice-president of the corporation in charge of a pr incipal 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 directi ng other comprehensive measures to assure long term environmental complia nce 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. F or a partnership or sole proprietors hip these forms shall be signed by a general partner or the propr ietor, respectively; or c. For a municipality, State, Federal, or other public agency these forms shall be signed by either a principa l 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 27 (Part VII. H. 1. c) ii . a senior executive officer having responsibility for the overall operations of a principal geogr aphic unit of the agency (e.g., Regional Administrators of EPA). 2. T he SWPPP and other information requested by the Department shall be signed by a person described in Part VII.H.1. or by a duly authorized representative of that person. A person is a duly auth orized representative only if: a. The authorization is made in writ ing by a person described in Part VII.H.1.; b. The authorization specifies either an individual or a position having responsibility for the overall operati on 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 res ponsibility, or an individual or position having overa ll responsibility for environmental matters for the company. (A duly author ized representative may thus be either a named individual or any individual occupying a named position) and, c. The written authorization shall includ e the name, title and signature of the authorized representative and be attached to the SWPPP. 3. All inspection reports shall be signed by the qualified inspector that performs the inspection. 4. The MS4 SWPPP Acceptance form shall be signed by the principal executive officer or ranking elected official from the regulated, traditional land use control MS4, or by a duly authorized repres entative of that person. It shall constitute a permit violation if an incorrect and/or improper signatory authorizes any required forms, SWP PP and/or inspection reports. I. Property Rights - The issuance of this permit does not convey any property rights of any sort, nor any exclusive priv ileges, nor does it authorize a ny injury to private property nor any invasion of personal right s, nor any infringement of Fede ral, 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 seve rable, 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. 28 (Part VII. K) K. Denial of Coverage Under This Permit 1. At its sole discretion, the Department may require any owner or operator authorized by this permit to apply for and/or obtain either an individual SPDES permit or another SPDES general permit. When the Department requires any discharger authorized by a general pe rmit 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 brie f 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 i ndividual SPDES permit, and a deadline, not sooner than 180 days from owner or operator receipt of the notification letter, whereby the authorization to disc harge under this general permit shall be terminated. Applications must be subm itted to the appropriate Regional Office. The Department may grant additiona l time upon demonstration, to the satisfaction of the Regional Water Engineer, that additional time to apply for an alternative authorization is necessary or where the De partment has not provided a permit determination in accordance with Part 621 of this Title. 2. Any owner or operator authorized by this permit may request to be excluded from the coverage under this permit by applying for an individual permit or another general permit. In such cases, the owner or operator shall submit an individual application or an alternative general perm it application in accordance with the requirements of this general permit, 40 CFR 122.26(c)(1)(ii) and 6 NYCRR Part 621, with reasons supporting th e request, to the De partment at the address for the appropriate Department Office (see addresses in Appendix F).The request may be granted by issuan ce of an individual permit or another general permit at the discretion of the Department. 3. When an individual SPDES permit is issu ed to a discharger authorized to discharge under a general SPDES permit fo r the same discharge(s), the general permit authorization for outfalls author ized 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 the Department or an authorized representative of EPA, the State, 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 credential s and other documents as may be required by law, to: 29 (Part VII. M) 1. Enter upon the owner’s or operator's premises where a regulated facility or activity is located or conducted or where record s 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 facili ties or equipment (including monitoring and control equipment). N. Permit Actions - At the Department’s sole discreti on, this permit may, at any time, be modified, suspended, revoked, or renewed. The filing of a request by the owner or operator for a permit modification, revocation and reissu ance, termination, a no tification of planned changes or anticipated noncompliance does not li mit, diminish and/or stay compliance with any terms of this permit. O. Definitions - Definitions of key terms are included in Appendix A of this permit. P. Re-Opener Clause 1. If there is evidence indicating potential or realized impacts on water quality due to any stormwater disc harge 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 ma y be modified to include different limitations and/or requirements. 2. Permit modification, suspension or revocati on will be conducted in accordance with 6 NYCRR Part 621, 6 NYC RR 750-1.18, and 6 NYCRR 750-1.20. Q. Penalties for Falsification of Forms and Reports – Article 17 of the ECL provides for a civil penalty of $37,500 per day per violation of this permit. Articles 175 and 210 of the New York State Penal Law provide for a crimin al penalty of a fine and/or imprisonment for falsifying forms and reports required by this permit. R. Other Permits – Nothing in this permit reli e ves the owner or operator from a requirement to obtain any ot her permits required by law. 30 APPENDIX A Definitions Alter Hydrology from Pre to Po st-Development Conditions - means the post-development peak flow rate(s) has increased by more than 5% of the pre-developed condition for the design storm of interest (e.g. 10 yr and 100 yr). Combined Sewer - means a sewer that is designed to collect and convey both “sewage” and “stormwater”. Commence (Commencement of) Construction Activities - means the initial disturbance of soils associated with clearing, grading or excavation activities; or othe r construction re lated activities that disturb or expose soils such as demoliti on, stockpiling of fill material, and the initial installation of erosion and sedi ment control practices required in the SWPPP. See definition for “Construction Activity(ies)” also. Construction Activity(ies) - means any clearing, grading, excavation, filling, demolition or stockpiling activities that result in soil disturba nce. 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, hydrau lic 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 disc harge 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 wate rs 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. Final Stabilization - means that all soil disturbance act ivities have ceased and a uniform, perennial vegetative cover with a density of eigh ty (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 dist urbed 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 authorizing a category of discharges. Groundwater - means waters in the saturated zone. The saturated zone is a subsurface zone in 31 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. Impervious Area (Cover) - means all impermeable surfaces th at cannot effectively infiltrate rainfall. This includes paved, concrete and gravel surfaces (i.e. parking lots, driveways, roads, runways and sidewalks); building rooftops and miscellaneous impe rmeable structures such as patios, pools, and sheds. Larger Common Plan of Development or Sale - means a contiguous area where multiple separate and distinct construction activities are occurring, or will occur, u nder 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 noti ce or hearing, marketing plan, advertisement, drawing, permit application, State Environmenta l Quality Review Act (SEQRA) application, zoning request, computer design, etc.) or physical demarcation (inc luding boundary signs, lot stakes, surveyor markings, etc.) indicating that construction activiti es 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 apar t, each project can be treated as a separate plan of development or sale provided any interconnecting ro ad, pipeline or utilit y project that is part of the same “common plan” is not concurre ntly being disturbed. Municipal Separate Storm Sewer (MS4) - a conveyance or system of conveyances (including roads with drainage systems, m unicipal streets, catch basins, cu rbs, gutters, ditches, man-made channels, or storm drains): i. Owned or operated by a State, city, tow n, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industri al wastes, stormwater, or ot her wastes, including special districts under State law such as a sewer district, flood c ontrol 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 coll ecting 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 st ormwater permits under the Federal Water Pollution Control Act (Clean Water Act). NOI Acknowledgment Letter - means the letter that the De partment 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 di scharge in accordance with the general permit for stormwater discharges from construction activity. 32 Owner or Operator - means the person, persons or legal entity which owns or leases the property on which the construction activity is occurring; a nd/or an entity that has operational control over the construction plans and specifica tions, including the ability to ma ke modifications to the plans and specifications. 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 expe cted to cause pollution of the waters of the state in contravention of th e standards or guidance va lues adopted as provided in Parts 700 et seq of this Title. Qualified Inspector - means a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a license d Professional Engineer, Ce rtified Professional in Erosion and Sediment Control (C PESC), Registered Landscape Ar chitect, or other Department endorsed individual(s). It can also mean someone worki ng under the direct supervision of , and at the same company as, the licensed Professional Engineer or Registered Landscape Arch itect, provided that person has training in the principles and prac tices of erosion and sediment cont rol. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Profe ssional Engineer or Registered Landscape Architect has received four (4) hours of Department e ndorsed training in proper erosion a nd sediment control principles from a Soil and Water Conservation District, or ot her Department endorsed entity. After receiving the initial training, the in dividual working under the direct supe rvision of the licensed Professional Engineer or Registered Landscape Architect shall r eceive 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 stor mwater 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 endorse d individual(s). Individuals preparing SWPPPs that require the post-constructi on stormwater management practice component must have an understanding of the principles of hydrology, wa ter quality management practice design, water quantity control design, and, in many cases, the pr inciples of hydraulics in order to prepare a SWPPP that conforms to the Department’s tech nical standard. All comp onents of the SWPPP that involve the practice of engineer ing, as defined by the NYS Edu cation Law (see Article 145), shall be prepared by, or under the direct supervision of, a prof essional engineer li censed to practice in the State of New York. 33 Regulated, Traditional Land Use Control MS4 - means a city, town or village with land use control authority that is require d to gain coverage under New York State DEC’s SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Se wer Systems (MS4s). Routine Maintenance Activity - means construction activity that is performed to maintain the original line and grade, hydraulic capacity, or or iginal purpose of a facility, including, but not limited to: • Re -grading of gravel ro ads 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 ditc h if the changes to the line and grade, hydraulic capacity or pur pose 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 th at does not expose soil or disturb the bottom six (6) inches of subbase material, • Long-term use of equipment storage ar eas at or near highway maintenance facilities, • Removal of sediment from the edge of th e 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 upla nd disposal sites for the canal, and • Replacement of curbs, gutters, sidewalks and guide rail posts. State Pollutant Discharge E limination 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. Surface Waters of the State - shall be construed to incl ude 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, fres h or salt, public or priv ate (except those private waters that do not combine or e ffect a junction with natural surf ace or underground waters), which are wholly or partially within or bordering the stat e or within its jurisdic tion. Waters of the state are further defined in 6 NYCRR Parts 800 to 941. Temporary Stabilization - means that exposed soil has been covered with material(s) as set forth in the technical standard, New York Standard s 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). 34 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 wate rbody can receive on a daily basi s and still meet water quality standards, and an allocation of that amount to the pollutant's sources. A TMDL stipulates wasteload allocations (WLAs) fo r point source discharges, load allocations (LAs) for nonpoint sources, and a margin of safety (MOS). Trained Contractor - means an employee from the contracti ng (construction) company, identified in Part III.A.6., that has received four (4) hours of Department endor sed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receivi ng 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 contract ing (construction) company, identified in Part III.A.6., that meets the qualified inspector qualifications (e.g. license d Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Re gistered Landscape Architect, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Regist ered 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 ot her Department endorsed entity). The trained contractor will be responsible for the day to day implementation of the SWPPP. Uniform Procedures Act (UPA) Permit - means a permit required under 6 NYCRR Part 621 of the Environmental Conservation Law (ECL), Article 70. Water Quality Standard - means such measures of purity or qua lity for any waters in relation to their reasonable and necessary use as promulgated in 6 NYCRR Part 700 et seq. 35 APPENDIX B Required SWPPP Components by Project Type Table 1 C ONSTRUCTION A CTIVITIES THAT R EQUIRE THE P REPARATION OF A SWPPP T HAT O NLY I NCLUDES E ROSION AND S EDIMENT C ONTROLS The following construction activities that involve soil disturba nces of one (1) or more acres of land, but less than five (5) acres: • Single family home not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix 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; su ch as gas lines, fiber-optic cable, cable TV, electric, telephone, sewer mains, and water mains • Environmental enhancement projects, such as we tland mitigation projects, stormwater retrofits and stream restoration projects • Bike paths and trails • Sidewalk construction projects that are not part of a road/ highway construction or reconstruction project • Slope stabilization projects • Slope flattening that changes the grade of the site, but does not significantly change the runoff characteristics • Spoil areas that will be covered with vegetation • Land clearing and grading for th e purposes of creating vegetated open space (i.e. recreational parks, lawns, meadows, fiel ds), excluding projects that alter hydrology from pre to post development conditions • Athletic fields (natural grass) that do not include the construction or reconstruction of impervious area and do not alter hydrology from pre to post development conditions • Demolition project where vegetation will be es tablished 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 St ate”, 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 di sturbances 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 (5000) square feet and one (1) acre of land. 36 Table 2 C ONSTRUCTION A CTIVITIES THAT R EQUIRE THE P REPARATION OF A SWPPP T HAT I NCLUDES P OST -CONSTRUCTION S TORMWATER M ANAGEMENT P RACTICES 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 dist urbances 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, tr ansfer 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, substa tions, 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 or other linear utility project • All other construction activities that include the construction or reconstruction of impervious area and alter the hydrology from pre to post development conditions, and are not listed in Table 1 37 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 conforma nce 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 lo cated east of the Hudson River - Figure 1 • Onondaga Lake Watershed - Figure 2 • Greenwood Lake Watershed -Figure 3 • Oscawana Lake Watershed – Figure 4 Figure 1 - New York City Wat ershed East of the Hudson 38 Figure 2 - Onondaga Lake Watershed 39 40 Figure 3 - Greenwood Lake Watershed 41 igure 4 - Oscawana Lake Watershed F APPENDIX D 42 Watersheds where owners or operators of construction activiti es 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 43 List of 303(d) segments impaired by pollutants rela ted to construction activ ity (e.g. silt, sediment or nutrients). Owners or operators of single family home and singl e family residential subdivision construction activities 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-construc tion stormwater management practices designed in conformance with the most current version of the t echnical standard, New York Stat e Stormwater Management Design Manual (“Design Manual”). COUNTY WATERBODY CO UNTY WATERBODY APPENDIX E Albany Ann Lee (Shakers) Pond, Stump Pond Albany Basic Creek Reservoir Bronx Van Cortlandt Lake Broome Whitney Point Lake/Reservoir Broome Beaver Lake Broome White Birch Lake Chautauqua Chautauqua Lake, North Chautauqua Chautauqua Lake, South Chautauqua Bear Lake Chautauqua Chadakoin River and tribs Chautauqua Lower Cassadaga Lake Chautauqua Middle Cassadaga Lake Chautauqua Findley Lake Clinton Great Chazy River, Lower, Main Stem Columbia Kinderhook Lake Columbia Robinson Pond Dutchess Hillside Lake Dutchess Wappinger Lakes Dutchess Fall Kill and tribs Dutchess Rudd Pond Erie Rush Creek and tribs Erie Ellicott Creek, Lower, and tribs Erie Beeman Creek and tribs Erie Murder Creek, Lower, and tribs Erie South Branch Smoke Cr, Lower, and tribs Erie Little Sister Creek, Lower, and tribs Essex Lake George (primary county listed as Warren) Genesee Black Creek, Upper, and minor tribs Genesee Tonawanda Creek, Middle, Main Stem Genesee Tonawanda Cr eek, Upper, and minor tribs Genesee Little Tonawa nda Creek, Lower, and tribs Genesee Oak Orchard Creek, Upper, and tribs Genesee Bowen Brook and tribs Genesee Bigelow Creek and tribs Greene Schoharie Reservoir Greene Sleepy Hollow Lake Herkimer Steele Creek tribs Kings Hendrix Creek Lewis Mill Creek/South Branch and tribs Livingston Conesus Lake Livingston Jaycox Creek and tribs Livingston Mill Creek and minor tribs Monroe Genesee Ri ver, Lower, Main Stem Monroe Genesee Ri ver, Middle, Main Stem Monroe Black Creek, Lower, and minor tribs Monroe Buck Pond Monroe Long Pond Monroe Cranberry Pond Monroe Mill Creek and tribs Monroe Shipbuilders Creek and tribs Monroe Minor tribs to Irondequoit Bay Monroe Thomas Creek/White Brook and tribs Nassau Glen Cove Creek, Lower, and tribs Nassau LI Tribs (fresh) to East Bay Nassau East Meadow Brook, Upper, and tribs Nassau Hempstead Bay Nassau Hempstead Lake Nassau Grant Park Pond Niagara Bergholtz Creek and tribs Oneida Ballou, Nail Creeks Onondaga Ley Creek and tribs Onondaga Onondaga Creek, Lower and tribs Onondaga Onondaga creek, Middle and tribs Onondaga Onondaga Cr eek, Upper, and minor tribs Onondaga Harbor Brook, Lower, and tribs Onondaga Ninemile Creek, Lower, and tribs Onondaga Minor tribs to Onondaga Lake Ontario Honeoye Lake Ontario Hemlock Lake Outlet and minor tribs Ontario Great Brook and minor tribs Oswego Lake Neatahwanta Putnam Oscawana Lake Putnam Lake Carmel Queens Jamaica Bay, Eastern, and tribs (Queens) Queens Bergen Basin Queens Shellbank Basin Rensselaer Snyders Lake Richmond Grasmere, Arbutus and Wolfes Lakes Saratoga Dwaas Kill and tribs Saratoga Tribs to Lake Lonely Saratoga Lake Lonely Saratoga Schuyler Creek and tribs Schenectady Collins Lake 44 APPENDIX E nt’d. Y COUNTY WATERBODY List of 303(d) segments impaired by pollutants related to construction activity, co COUNTY WATERBOD Schoharie Engleville Pond ake Salubria teuben Smith Pond uffolk Millers Pond Suffolk Mattituck (Marratooka) Pond Suffolk Tidal tribs to West Moriches Bay Suffolk Canaan Lake Suffolk Lake Ronkonkoma Tompkins Cayuga Lake, Southern End Tompkins Owasco Inlet, Upper, and tribs Ulster Ashokan Reservoir Ulster Esopus Creek, Upper, and minor tribs Warren Lake George Warren Tribs to L.George, Village of L George Warren Huddle/Finkle Brooks and tribs Warren Indian Brook and tribs Warren Hague Brook and tribs Washington Tribs to L.George, East Shore of Lake George Washington Cossayuna Lake Wayne Port Bay Wayne Marbletown Creek and tribs Westchester Peach Lake Westchester Mamaroneck River, Lower Westchester Mamaroneck River, Upper, and minor tribs Westchester Sheldrake River and tribs Westchester Blind Brook, Lower Westchester Blind Brook, Upper, and tribs Westchester Lake Lincolndale Westchester Lake Meahaugh Wyoming Java Lake Wyoming Silver Lake Schoharie Summit Lake St. Lawrence Black Lake Outlet/Black Lake Steuben L S S Note: The list above identifies those waters from the final New York State “2008 Section 303(d) List of Impaired Waters Requiring a TMDL/O ther Strategy”, dated May 26, 2008, that are impaired by silt, sediment or nutrients. 45 APPENDIX F L IST OF NYS DEC R EGIONAL O FFICES Region C OVERING THE FOLLOWING COUNTIES : DIVISION OF ENVIRONMENTAL PERMITS (DEP) P ERMIT A DMINISTRATORS DIVISION OF WATER (DOW) W ATER (SPDES) P ROGRAM 1 N ASSAU AND S UFFOLK 50 C IRCLE R OAD S TONY B ROOK , N Y ) 444-0365 11790-3409 11790 50 C IRCLE R OAD S TONY B ROOK , N Y T EL . (631 T EL . (631) 444-0405 2 NX , K INGS , N EW Y ORK B RO , Q UE 1 H UNTERS P OINT P 40 21 ST S T . L ONG I SLAND C ITY 07 T EL . (718) 482-4997 ST S T . C ITY , N Y 11101-5407 82-4933 ENS AND R ICHMOND 47-LAZA , 1 H UN 47-40 21 , N Y 11101-54 L ONG I SLAND T EL . (718) 4 TERS P OINT P LAZA , 3 UT R OCKLAND , S ULLIVA D CHESS , O RANGE , P UTNAM , N LSTER AND W ESTCHESTER ,U 21 S OUTH P UTT C O N EW P ALTZ , N Y 12 T EL . (845) 256-3059 E 1 W RNERS R OAD 100 H ILLSIDE A VENUE , S UIT 561-1696 W HITE P LAINS , N Y 10603 T EL . (914) 428 - 2505 4 A LBANY , C OLUMBIA , D ELAW RE ARE , S CH OHARIE 1150 N ORTH W EST TADY , N Y 1 ) 357-2069 DY , N Y 12306-2014 7-2045 G ENE , M ONTGOMERY , O T ,R L ,S CHENEC T EL . (518 EGO ENSSEAER ENECTADY AND S CH S COTT R OAD 1130 N ORTH W ESTCOTT R OAD 12306-204 S CHENECTA T EL . (518) 35 5 NTON , E SSEX , F RANK C LI LIN , F UL RATOGA , A TON 1115 S TATE R OUTE R AY B ROOK , N Y 12 T EL . (518) 897-1234 E R OAD , TON , H AMILTON , S A HING W RREN AND W AS 86, P O B X 296232 G OLF C OURS O 977-0296 P O B OX 220 W ARRENSBURG , N Y 12885-0220 T EL . (518) 623-1200 6 HERKIMER, JEFFERSON, LEWIS, ONEIDA AND 31 ST. LAWRENCE WATERTOW 315) 785-STATE OFFICE B 7 WASHINGTO N, N 224 793-2554 UILDING STATE OFFICE BUILDING N STREET 207 GENESEE STREET Y 13601-3787 UTICA, NY 13501-2885 TEL. (5 TEL. (315)7 BR CHNANGO, CORTLAND, SYRAC O E A M 1 ) 426-743 2400 -7500 OME, CAYUGA, 615 ERIE BLVD. W MDISON, ONONDAGA, USE, NY TEL. (315 OSWEGO, TIOGA AND TOPKINS EST 615 ERIE BLVD. WEST NY 13204-3204-2400 SYRACUSE, 426 8 TEL. (315) 8 CMUNG, GENESEE, HE IV NT SCH TE YAT ST AVON AVON, NY 14414-TEL. (585) 226-246 T AVON-LIMA RD. 14414-9519 2466 LINGSTON, MONROE, OARIO, ORLEANS, UYLER, SENECA, SUBEN, WAYNE AND ES 6274 EA -LIMA ROAD 6274 EAS 9519 AVON, NY ) 226-6 TEL. (585 9 EGANY, CATTARAUGUS, RIE, 270 M BUF ALL ICHIGAN A FALO, NY 14 TEL. (716) 851-716 HIGAN AVE. 3-2999 CHAUTAUQUA, E NIAGARA AND WY OMING VENUE 270 MIC 203-2999 BUFFALO, NY 1420 6) 851-7070 5 TEL. (71 APPENDIX 10 JARRETT Engineers, PLLC Civil Environmental Engineering 1-Pre Construction actions 1. establish construction entrance at driveway location. 2. Silt fence is to be placed to keep sediment on site See Site Plan Drawings Day 1 of constructionSee written report 2-Runoff & Drainage Control 1. Rough in stormwater devices.See Site Plan Drawings Day 2 - 5 of construction See written report 3- Grading 1. Temporary stock pile areas to be established for on site material to be reused See Site Plan Grading Day 2 - 5 of construction See written report 4- Erosion Control 1. Stabilize stock piles with mulch or temporary seeding if construction ceases for more than 14 days See Site Plan Drawings Day 2 - 5 of construction See written report 5- Sediment Control 1. Silt fence to be placed to keep sediment on site.See Site Plan Drawings Day 1 - end of construction See written report 6- Maintenance Inspection & Plan Update 1. site inspections to be completed every 7 days or after 1/2" of rain See SWPPP Throughout entire construction See written report 7- Finalize Grading & Landscaping 1. Finalize site grading. 2. remove all temporary sediment control measures 3. stabilize all disturbed areas within 14 days See Site Plan Drawings 1 - 10 days prior to end of site construction See written report 8- Post- construction Stormwater Management 1. Operator is to inspect the stormwater controls as outlined in the maintenance inspection checklist.See SWPPP 1 - 2 days prior to end of site construction See written report Construction Sequence Schedule Type Activities (identify name of planned practices )Map Symbols Maintenance Actions Schedule Ridgewood Meadows' Subdivision PRO# 06-075.03 12 East Washington Street Glens Falls, NY 12801 518-792-2907 Fax 798-1864 APPENDIX 11 Page1of10 NewYorkStateDepartmentofEnvironmentalConservation DivisionofWate r 625Broadway,4thFloor Albany,NewYork12233-3505 N OTICEOFINTENT A llsectionsmustbecompletedunlessotherwisenoted .Failuretocompleteallitemsmay resultinthisformbeingreturnedtoyou,therebydelayingyourcoverageunderthis GeneralPermit.Applicantsmustreadandunderstandtheconditionsofthepermitand prepareaStormwaterPollutionPreventionPlanpriortosubmittingthisNOI.Applicants areresponsibleforidentifyingandobtainingotherDECpermitsthatmayberequired.-IMPORTANT-RETURNTHISFORMTOTHEADDRESSABOVE OWNER/OPERATOR M USTSIGNFOR M StormwaterDischargesAssociatedwithConstructionActivity UnderState PollutantDischar g eEliminationS y stem(SPDES)GeneralPermit#GP-0-10-001 Owner/OperatorInformation Owner/OperatorContactPersonLastName(NOTCONSULTANT)Owner/OperatorContactPersonFirstName Owner/OperatorMailingAddress City State Zip -Phone(Owner/Operator)--Fax(Owner/Operator)--Email(Owner/Operator)Owner/Operator(CompanyName/PrivateOwnerName/MunicipalityName)N Y R (forDECuseonly)FEDTAXID -(notrequiredforindividuals)0 6 6 9 2 7 3 0 3 6 H.ThomasJarrett Jarrett Thomas 12EastWashingtonStreet GlensFalls NY12801 51879229075187981864 tjarrett@jarrettengineers.com 1.ProvidetheGeographicCoordinatesfortheprojectsiteinNYTMUnits.Todothisyou m ust gototheNYSDECStormwaterInteractiveMapontheDECwebsiteat:www.dec.ny.gov/imsmaps/stormwater/viewer.htm ZoomintoyourProjectLocationsuchthatyoucanaccuratelyclickonthecentroidof yoursite.Onceyouhavelocatedyourprojectsite,gotothetoolboxesonthetopand choose"i"(identify).Thenclickonthecenterofyoursiteandanewwindowcontaining theX,YcoordinatesinUTMwillpopup.Transcribethesecoordinatesintotheboxes below.Forproblemswiththeinteractivemapusethehelpfunction.XCoordinates(Easting)YCoordinates(Northing)ProjectSiteInformation Project/SiteName StreetAddress(NOTP.O.BOX)City/Town/Village(THATISSUESBUILDINGPERMIT)State Zip -County NameofNearestCrossStreet DistancetoNearestCrossStreet(Feet)ProjectInRelationtoCrossStreet North South East West Page2of10 2.Whatisthenatureofthisconstructionproject?NewConstruction Redevelopmentwithincreaseinimperviousness Redevelopmentwithnoincreaseinimperviousness Section-Block-Parcel TaxMapNumbers SideofStreet North South East West DECRegion TaxMapNumbers 0 4 5 7 2 7 3 0 3 1 Ridgewoodmeadowssubdivision Ridgeroad Queensbury NY12804warren5 HavilandRoad 1475 290.-1-83 6117374802077 3.Selectthepredominantlanduseforbothpreandpostdevelopmentconditions.SELECTONLYONECHOICEFOREACH 8.Doyouplantodisturbmorethan5acresofsoilatanyonetime?9.IndicatethepercentageofeachHydrologicSoilGroup(HSG)atthesite.Page3of10 ExistingLandUse FOREST PASTURE/OPENLAND CULTIVATEDLAND SINGLEFAMILYHOME SINGLEFAMILYSUBDIVISION TOWNHOMERESIDENTIAL MULTIFAMILYRESIDENTIAL INSTITUTIONAL/SCHOOL INDUSTRIAL COMMERCIAL ROAD/HIGHWAY RECREATIONAL/SPORTSFIELD BIKEPATH/TRAIL LINEARUTILITY PARKINGLOT OTHER ..FutureLandUse SINGLEFAMILYHOME SINGLEFAMILYSUBDIVISION TOWNHOMERESIDENTIAL MULTIFAMILYRESIDENTIAL INSTITUTIONAL/SCHOOL INDUSTRIAL COMMERCIAL MUNICIPAL ROAD/HIGHWAY RECREATIONAL/SPORTSFIELD BIKEPATH/TRAIL LINEARUTILITY(water,sewer,gas,etc.)PARKINGLOT CLEARING/GRADINGONLY DEMOLITION,NOREDEVELOPMENT OTHER Yes No Pre-Development Post-Development 4.Willfutureuseofthissitebeanagriculturalpropertyasdefined bytheNYSAgricultureandMarketsLaw?Yes No Yes No 5.IsthisaprojectwhichdoesnotrequirecoverageundertheGeneral Permit(e.g.ProjectdoneunderanIndividualSPDESPermit,or departmentapprovedremediation)?Yes No 6.Isthispropertyownedbyastateauthority,stateagencyorlocal government?A B C D %%%%NumberofLots TotalSite Acrea g e ..AcreageTo BeDisturbed ExistingImpervious A reaWithinDisturbed FutureImpervious A reaWithinDisturbed 7.Inaccordancewiththelargercommonplanofdevelopmentorsale,enterthetotal projectsiteacreage,theacreagetobedisturbedandthefutureimperviousarea (acreage)withinthedisturbedarea.Roundtothenearesttenthofanacre.6 9 5 3 2 7 3 0 3 8 1601703 100 Page4of10 Name 10.Isthisaphasedproject?Yes No 11.Entertheplannedstartandend datesofthedisturbanceactivities.-StartDate //EndDate //12.Identifythenearest,natural ,surfacewaterbody(ies)towhichconstructionsite runoffwilldischarge.12a.Typeofwaterbodyidentifiedin Question12?Wetland/StateJurisdictionOnSite(Answer12b)Wetland/StateJurisdictionOffSite Wetland/FederalJurisdictionOnSite(Answer12b)Wetland/FederalJurisdictionOffSite Stream/CreekOnSite Stream/CreekOffSite RiverOnSite RiverOffSite LakeOnSite LakeOffSite OtherTypeOnSite OtherTypeOffSite 12b.Howwasthewetlandidentified?RegulatoryMap DelineatedbyConsultant DelineatedbyArmyCorpsofEngineers Other(identify)13.Hasthesurfacewaterbody(ies)inquestion12beenidentifiedasa 303(d)segmentinAppendixEofGP-0-10-001?14.IsthisprojectlocatedinoneoftheWatershedsidentifiedin AppendixCofGP-0-10-001?Yes No Yes No 15.Istheprojectlocatedinoneofthewatershedareas associatedwithAAandAA-Sclassifiedwaters?Ifno,skipquestion16.Yes No 4 0 9 4 2 7 3 0 3 2 0930201310312017 USACOEWetland 18.Doesthesiterunoffenteraseparatestormsewersystem (includingroadsidedrains,swales,ditches,culverts,etc)?(IfNo ,ski pq uestion19 )19.Whatisthenameofthemunicipality/entitythatownstheseparatestormsewersystem?Yes No Unknown 20.Doesanyrunofffromthesiteenterasewerclassifiedas aCombinedSewer?Yes No Unknown 16.Doesthisconstructionactivitydisturblandwithno existingimperviouscoverandwheretheSoilSlopePhase isidentifiedasanEorFontheUSDASoilSurvey?IfYes,whatistheacreagetobedisturbed?Yes No .21.HastherequiredErosionandSedimentControlcomponentofthe SWPPPbeendevelopedinconformancewiththecurrentNYSStandards andSpecificationsforErosionandSedimentControl(akaBlueBook)?22.Doesthisconstructionactivityrequirethedevelopmentofa SWPPPthatincludesWaterQualityandQuantityControlcomponents (Post-ConstructionStormwaterManagementPractices)(IfNo,skipquestions23and27-35)23.HavetheWaterQualityandQuantityControlcomponentsoftheSWPPP beendevelopedincomformancewiththecurrentNYSStormwaterManagement DesignManual?Yes No Yes No Yes No Page5of10 17.WilltheprojectdisturbsoilswithinaStateregulated wetlandortheprotected100footadjacentarea?Yes No 3 1 5 1 2 7 3 0 3 5 Page6of10 SWPPPPreparer ContactName(Last,Space,First)MailingAddress City State Zip -Phone --Fax --Email Signature Date //FirstName LastName MI SWPPPPreparerCertification 24.TheStormwaterPollutionPreventionPlan(SWPPP)waspreparedby:ProfessionalEngineer(P.E.)SoilandWaterConservationDistrict(SWCD)RegisteredLandscapeArchitect(R.L.A)CertifiedProfessionalinErosionandSedimentControl(CPESC)Owner/Operator Other IherebycertifythattheStormwaterPollutionPreventionPlan(SWPPP)for thisprojecthasbeenpreparedinaccordancewiththetermsandconditionsof theGP-0-10-001.Furthermore,Iunderstandthatcertifyingfalse,incorrect orinaccurateinformationisaviolationofthispermitandthelawsofthe StateofNewYorkandcouldsubjectmetocriminal,civiland/or administrativeproceedings.3 6 6 3 2 7 3 0 3 3 JARRETTEngineers,PLLC JarrettThomas 12EastWashingtonStreet GlensFalls NY12801 51879229075187981864 tjarrett@jarrettengineers.com ThomasH Jarrett 07122013 2013.07.15 11:32:41 -04'00' 26.Select all oftheerosionandsedimentcontrolpracticesthatwillbeemployed ontheprojectsite:Page7of10 Biotechnical BrushMatting Wattling Other 25.Hasaconstructionsequenceschedulefortheplannedmanagement practicesbeenprepared?Yes No BrushMatting DuneStabilization GrassedWaterway Mulching ProtectingVegetation RecreationAreaImprovement Seeding Sodding Straw/HayBaleDike StreambankProtection TemporarySwale Topsoiling VegetatingWaterways V egetativeMeasures CheckDams ConstructionRoadStabilization DustControl EarthDike LevelSpreader PerimeterDike/Swale PipeSlopeDrain PortableSedimentTank RockDam SedimentBasin SedimentTraps SiltFence StabilizedConstructionEntrance StormDrainInletProtection Straw/HayBaleDike TemporaryAccessWaterwayCrossing TemporaryStormdrainDiversion TemporarySwale TurbidityCurtain Waterbars TemporaryStructural DebrisBasin Diversion GradeStabilizationStructure LandGrading LinedWaterway(Rock)PavedChannel(Concrete)PavedFlume RetainingWall RiprapSlopeProtection RockOutletProtection StreambankProtection PermanentStructural 7 6 5 4 2 7 3 0 3 7 Page8of10 27.Indicate all StormwaterManagementPractice(s)thatwillbeinstalled/constructed onthissite:MicropoolExtendedDetention(P-1)WetPond(P-2)WetExtendedDetention(P-3)MultiplePondSystem(P-4)PocketPond(P-5)Ponds Filtering SurfaceSandFilter(F-1)UndergroundSandFilter(F-2)PerimeterSandFilter(F-3)OrganicFilter(F-4)Bioretention(F-5)Other DrySwale(O-1)WetSwale(O-2)InfiltrationTrench(I-1)InfiltrationBasin(I-2)DryWell(I-3)UndergroundInfiltrationSystem Infiltration ShallowWetland(W-1)ExtendedDetentionWetland(W-2)Pond/WetlandSystem(W-3)PocketWetland(W-4)28.Describeotherstormwatermanagementpracticesnotlistedaboveorexplain anydeviationsfromthetechnicalstandards.29.HasalongtermOperationandMaintenancePlanforthe post-constructionstormwatermanagementpractice(s)beendeveloped?IfYes,IdentifytheentityresponsibleforthelongtermOperationandMaintenance Yes No OpenChannels Wetlands RainGarden Cistern GreenRoof StormwaterPlanters PermeablePaving(ModularBlock)AlternativePractice VerifiedProprietaryPractice Hydrodynamic WetVault MediaFilter Post-ConstructionStormwaterManagementPractices W aterQualityandQuantityControl Important :CompletionofQuestions27-35isnotrequired ifresponsetoQuestion22isNo.9 3 1 2 2 7 3 0 3 0 VegetatedSwale GreenwoodBuilders,LLC Page9of10 IMPORTANT:Forquestions31and32,imperviousareashouldbecalculatedconsideringthe p rojectsiteandalloffsiteareasthatdraintothepost-constructionstormwater m anagementpractice(s).(TotalDrainageArea=ProjectSite+Offsiteareas)32.Pre-ConstructionImperviousArea-AsapercentoftheTotal DrainageArea enterthepercentageoftheexistingimperviousareas beforeconstructionbegins.33.Post-ConstructionImperviousArea-AsapercentoftheTotal DrainageArea,enterthepercentageofthefutureimperviousareasthat willbecreated/remainonthesiteaftercompletionofconstruction.W QvRequired W QvProvided .acre-feet 30.Providethetotalwaterqualityvolumerequiredandthetotalprovidedforthesite..acre-feet 31b.Theneedtoprovideforfloodcontrolhasbeenwaivedbecause:.CFSCFS .Post-develo p ment Pre-Develo p ment TotalExtremeFloodControlCriteria(Qf)-Peakdischargerateforthe100yearstorm .CFS .CFS Post-development Pre-Development TotalOverbankFloodControlCriteria(Qp)-Peakdischargerateforthe10yearstorm Sitedischargesdirectlytofourthorderstreamorlarger 31a.Theneedtoprovideforchannelprotectionhasbeenwaivedbecause:.acre-feet CPvProvided acre-feet .CPvRequired TotalChannelProtectionStorageVolume(CPv)-Extendeddetentionof post-developed1year,24hourstormevent 31.P rovidethefollowingUnifiedStormwaterSizingCriteriaforthesite.Sitedischargesdirectlytofourthorderstreamorlarger Downstreamanalysisrevealsthatfloodcontrolisnotrequired 34.Indicatethetotalnumberofpost-constructionstormwater managementpracticestobeinstalled/constructed.35.Providethetotalnumberofstormwaterdischargepointsfromthe site.(includedischargestoeithersurfacewatersortoseparate stormsewers y stems )%%6 2 5 7 2 7 3 0 3 5 (See'ChannelProtection'sectioninSWPPPreportforfurther information)025 026 084016 243232 808805 1 3 5 1 Page10of10 DECPermits 36.IdentifyotherDECpermitsthatarerequiredforthisproject.40.IfthisNOIisbeingsubmittedforthepurposeofcontinuingcoverageundera generalpermitforstormwaterrunofffromconstructionactivities,pleaseindicate theformerSPDESnumberassigned.Owner/OperatorCertification IhavereadorbeenadvisedofthepermitconditionsandbelievethatIunderstandthem.Ialso understandthat,underthetermsofthepermit,theremaybereportingrequirements.Iherebycertify thatthisdocumentandthecorrespondingdocumentswerepreparedundermydirectionorsupervision.Iam awarethattherearesignificantpenaltiesforsubmittingfalseinformation,includingthepossibilityof fineandimprisonmentforknowingviolations.Ifurtherunderstandthatcoverageunderthegeneralpermit willbeidentifiedintheacknowledgmentthatIwillreceiveasaresultofsubmittingthisNOIandcan beaslongassixty(60)businessdaysasprovidedforinthegeneralpermit.Ialsounderstandthat,by submittingthisNOI,IamacknowledgingthattheSWPPPhasbeendevelopedandwillbeimplementedasthe firstelementofconstruction,andagreeingtocomplywithallthetermsandconditionsofthegeneral permitforwhichthisNOIisbeingsubmitted.Owner/OperatorSignature Date //PrintFirstName PrintLastName MI 38.Isthisprojectsubjecttotherequirementsofaregulated,traditionallandusecontrolMS4?(IfNo,skipquestion39)Yes No 39.Hasthe"MS4SWPPPAcceptance"formbeensignedbytheprincipal executiveofficerorrankingelectedofficialandsubmittedalongwith thisNOI?Yes No AirPollutionControl CoastalErosion HazardousWaste LongIslandWells MinedLandReclamation OtherSPDES SolidWaste None Other NavigableWatersProtection/Article15 WaterQualityCertificate DamSafety WaterSupply FreshwaterWetlands/Article24 TidalWetlands Wild,ScenicandRecreationalRivers StreamBedorBankProtection/Article15 37.DoesthisprojectrequireaUSArmyCorpsofEngineersWetland Permit?IfYes,IndicateSizeofImpact.Yes No .2 5 1 4 2 7 3 0 3 7 NYR ThomasH Jarrett 07122013 2013.07.15 11:33:05 -04'00' APPENDIX 12 Page 1 of 3 New York State Department of Environmental Conservation Division of Water 625 Broadway, 4th Floor Albany, New York 12233-3505 *(NOTE: Submit completed form to address above)* NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity Please indicate your permit identification number: NYR ___ ___ ___ ___ ___ ___ I. Owner or Operator Information 1. Owner/Operator Name:2. Street Address:3. City/State/Zip:4. Contact Person:4a.Telephone:5. Contact Person E-Mail:II. Project Site Information 5. Project/Site Name:6. Street Address:7. City/Zip:8. County:III. Reason for Termination 9a. G All disturbed areas have achieved final stabiliza tion in accordance with the general permit and SWPPP. *Date final stabilization completed (month/year): 9b. G Permit coverage has been transferred to new ow ner/operator. Indicate new owner/operator’s permit identification number: NYR ___ ___ ___ ___ ___ ___ (Note: Permit coverage can not be terminated by owner identified in I.1. above until new owner/operator obtains coverage under the general permit) 9c. G Other (Explain on Page 2)IV. Final Site Information :10a. Did this construction activity require the development of a SW PPP that includes post-construction stormwater management practices? G yes G no ( If no, go to question 10f.) 10b. Have all post-construction stormwater management prac tices included in the final SWPPP been constructed? G yes G no (If no, explain on Page 2)10c. Identify the entity responsible for long-te rm operation and maintenance of practice(s)? Page 2 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity - continued 10d. Has the entity responsible for long-term operation and maintenance been gi ven a copy of the operation and maintenance plan required by the general permit? G yes G no 10e. Indicate the method used to ensure long-term operation and maintenance of the post-construction stormwater management practice(s): G Post-construction stormwater management pr actice(s) and any right-of-way(s) needed to maintain practice(s) have been deeded to the municipality. G Executed maintenance agreement is in place with the muni cipality that will maintain the post-construction stormwat er management practice(s). G For post-construction stormwater management practices that are privately owned, the deed of record has been modified to include a deed covenant that re quires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan. G For post-construction stormwater management practices that are owned by a public or private institution (e.g. school, college, university), or government agen cy or authority, policy and proce dures are in place that ensures operation and mainte nance of the practice(s) in accordance with the opera tion and maintenance plan. 10f. Provide the total area of impervious surface (i.e. roof, pavement, concrete, grav el, etc.) constructed within the disturbance area? (acres)11. Is this project subject to the requirements of a regulated, traditional land use control MS4? G yes G no (If Yes, complete section VI - “MS4 Acceptance” statement V. Additional Information/Explanation: (Use this section to answer questions 9c. and 10b., if applicable)VI. MS4 Acceptance - MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative (Note: Not required when 9b. is checked -transfer of coverage) I have determined that it is acceptable for the owner or ope rator of the construction project identified in question 5 to submit the Notice of Termination at this time.Printed Name:Title/Position:Signature:Date: Page 3 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity - continued VII. Qualified Inspector Cert ification - Final Stabilization :I hereby certify that all disturbed areas have achieved fina l stabilization as defined in the current version of the general permit, and that all temporary, structural eros ion and sediment control measures have been removed.Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and coul d subject me to criminal, civil and/or administrative proceedings.Printed Name:Title/Position:Signature:Date:VIII. Qualified Inspector Certification - Pos t-construction Stormwater Management Practice(s):I hereby certify that all post-construction stormwater manage ment practices have been constructed in conformance with the SWPPP. Furthermore, I understand that certifying fals e, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings.Printed Name:Title/Position:Signature:Date:IX. Owner or Operator Certification I hereby certify that this document was prepared by me or under my direction or supervision. My determination,based upon my inquiry of the person(s) who managed the construction activity, or those persons directly responsible for gathering the information, is that the in formation provided in this document is true, accurate and complete. Furthermore, I understand that certifying false, in correct or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings.Printed Name:Title/Position:Signature:Date:(NYS DEC Notice of Termination - January 2010) APPENDIX 13