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I - 11 Aquifer Permit - Cortland Used Cars
TOWN OF CORTLANDVILLE RAYMOND G. THORPE MUNICIPAL BUILDING 3577 TERRACE ROAD CORTLAND, NEW YORK 13045-3552 AQUIFER PROTECTION DISTRICT SPECIAL PERMIT APPLICANT Fee Paid Shawn Malchak dlbla Name Cortland Used Cars Phone 607-756-8089 Address 3600 West Road, Cortland, New York 13045 PROPERTY OWNER Name Shawn Malchak Phone 607-756-8089 Address 3600 West Road, Cortland, New York 13045 If applicant is a Corporation, list name, address, phone and fax numbers of all corporate officers and directors on reverse side. PROPERTY INFORMATION Location of property 3600 West Road, Cortland, New York 13045 Tax Map No. of Parcel 95.12-01-21.000 8 95.12-01-24.0000 PROPERTY ACQUIRED ON, OR PENDING DATE OF ACQUISITION September 2021 IS PROPERTY IN FLOOD PLAIN? YES X NO AQUIFER. PROTECTION AREA Yes ZONING DISTRICT 83 Information to be provided as per Article and Section 178-47 of the Town of CortlandviIle Zoning Law. 3 DATE OF APPLICATION •) ` L - z.3 nature of App j PERMIT GRANTED PERMIT DENIED GENERAL MUNICIPAL LAW Zoning Referral Form Conditional Permits, Special Permits, Site Plan Reviews & Variances Director GML NO. 95.12-1-21.000&95.12-01-24.000 CORTLAND COUNTY PLANNING DEPARTMENT (Tax Map Number) 37 Church St. Cortland, NY 13045-2838 Telephone: (607)753-5043 Date: Fax. (607)753-5150 Submitting Officer: Bruce Weber, Planning & Zoning Officer Municipality: Town of Cortlandville Mailing Address: 3577 Terrace Road. Cortland. NY 13045 Phone Number (607) 756-7052 The applicant requests the following: Variance: Sulk - Article Use -Article Aquifer Permit: Article X Conditional Permit: Article XIV Stormwater Pollution Prevention Plan Article XVI Fax Number. (607) 758-7922 Type of Referral Section Section Section 178.4.66 Proposed development will exceed $150,000.00 Section 178.36.9(F) Commercial garages & automotive repair shop Section 178.36.9(L) Used car sales Section N/A Reason(s) for request: Applicant seeks to replace his current automobile sale and service buildings with a new facility Is the above action a Type 1 Type 2 or unlisted action under the State Environmental Quality Review Act? Attach required environmental assessment forms for Type I and unlisted actions. The following information is required for vour application to be complete: 1. Name of petitioner: Shawn Malchak Owner's name (if different): same Date of acquisition: September 2021 File Name: phlwpdatalformslZoning Referral Form.05103105 [Conditional Permits -Special Pemnfts.Site Plan Reviews. Variances] Address: 3600 West Road State: New York Zip: 13045 Phone Number: 607-756-8089 Fax Number: 2. A Site Plan Map showing: a. Scale (1 inch equals 20 feet if site is less than 1 acre or are agreed upon scale for a site larger than 1 acre) b. North Arrow c. Physical Characteristics of Site, existing and proposed (Topography, Water and Vegetation) d. Layout Plan Showing buildings, parking and available utilities e. Surface and Subsurface Drainage Plan, incorporated with Layout Plan f. Location of County or State facility pursuant to Section 239 I, rn and n of the General Municipal Law g. Location Map at 1 "=1000' scale h. Area Map at 1 "=200' or an agreed upon scale (1) zoning classification of subject and adjoining properties (2) su rounding land use within 500 feet of subject property (3) surrounding zoning classifications 3. A certified Tax Map from the Cortland County Office of Real Property and Assessment showing the property lines of the applicant's property. 4. Availability of public utilities and services: Water Yes _ District v li -- ; Sewer Yes District Cville Fire Protection Yes District Cville Refuse Collection Private Special services required: Licensed nsed waste haular 5. Does Site Plan conform to municipal master plan? Yes If not why? 6. Does Site Plan conform to county land use plan? Yes If not why? 7. School District: Cortland Eniaraed School District 8. Projected energy consumption: same as presently used or minimal increase Type PI ..trir./gaS - 9. Traffic generation (expected vehicle departures and arrivals per 24 hour period) : no change from current NOTE: All maps require the name and address of the N.Y.S. licensed engineer or land surveyor responsible for preparing the seal and map. Signature and Title of Submitting Official (REVISED: 8/01) File Name: pinMpdata&Tmsl7.oning Referral Form.05103105 [Conditiortai Permits.5pecial Permits.Site Flan Reviews.Variances] TOWN OF CORTLANDVILLE RAYMOND G. THORPE MUNICIPAL BUILDING 3577 TERRACE ROAD CORTLAND, NEW YORK I3045-3552 APPLICATION FOR CONDITIONAL PERMIT APPLICANT Fee Paid Shawn Malchak dlbla Name Cortland Used Cars Phone 607-756-8089 Address 3600 West Road, Cortland, New York 13045 PROPERTY OWNER Name Shawn Malchak Phone 607-756-8089 Address 3600 West Road, Cortland, New York 13045 PROPERTY INFORMATION Location of property 3600 West Road, Cortland, New York 13045 Tax Map No. of Parcel 95.12-01-21.000 & 95.12-01-24.0000 PROPERTY ACQUIRED ON, OR PENDING DATE OF ACQUISITION September 2021 IS PROPERTY IN FLOOD PLAIN? YES X NO AQUIFER PROTECTION AREA Yes ZONING DISTRICT 63 Information to be included will be drawn from a checklist in Article XIV of the Cortlandville Zoning Law. DATE OF APPLICATION �I of�ppTiiran� PERMIT GRANTED PERMIT DENIED Short Environmental Assessment Form Part I - Project Information Instructions for Cornnleting. Part 1 — Project Information. The applicant or project sponsor is responsible for the completion of Part 1. Responses become part of the application for approval or funding, are subject to public review, and may be subject to further verification. Complete Part I based on information currently available. If additional research or investigation would be needed to fully respond to any item, please answer as thoroughly as possible based on current information. Complete all items in Part 1. You may also provide any additional information which you believe will be needed by or useful to the lead agency; attach additional pages as necessary to supplement any item. Part 1 — Project and Sponsor Information Name of Action or Project: New Automobile SaleslService Facility Project Location (describe, and attach a location map): 3600 West Road, Town of Conlandville. County of Cortland Brief Description of Proposed Action: Construction of new automobile sales and service facitity Name of Applicant or Sponsor: Telephone: p 607a56-8089 Shawn Malchak I E-Mail: Address: 3600 West Road City/PO: State: Zip Code: INY Cortland 113045 1. Does the proposed action only involve the legislative adoption of a plan, local law, ordinance, I NO YES administrative rule, or regulation? I Yes, attach a narrative description of the intent of the proposed action and the environmental resources that ❑ f may be affected in the municipality and proceed to Part 2. If no, continue to question 2. 1 Ij 2. Does the proposed action require a permit, approval or funding from any other government Agency? NO YES If Yes, list agency(s) name and permit or approval: Town Board & Planning Board - Town of Cortiandville ❑ F J 3. a. Total acreage of the site of the proposed action? 4-47 acres b. Total acreage to be physically disturbed? I gzacres c. Total acreage (project site and any contiguous properties) owned or controlled by the applicant or project sponsor? 4-47 acres 4. Check all land uses that occur on, are adjoining or near the proposed action: ❑ Urban ❑ Rural (non -agriculture) ❑ Industrial m Commercial m Residential (suburban) ❑ Forest ❑ Agriculture ❑ Aquatic ❑ Other(Specify): ❑ Parkland Pagel of 3 SEAF 2019 5. Is the proposed action, NO YES NIA a. A permitted use under the zoning regulations? ❑ 0 ❑ b. Consistent with the adopted comprehensive plan? ❑ 21 ❑ b. is the proposed action consistent with the predominant character of the existing built or natural landscape? NO YES ❑ F7 7. Is the site of the proposed action located in, or does it adjoin, a state listed Critical Environmental Area? NO YES If Yes, identify: _ � ❑ S. a. Will the proposed action result in a substantial increase in traffic above present levels? NO YES b. Are public transportation services available at or near the site of the proposed action? ❑ Z c. Are any pedestrian accommodations or bicycle routes available on or near the site of the proposed ❑ ❑ action? 9. Does the proposed action meet or exceed the state energy code requirements? NO YES If the proposed action will exceed requirements, describe design features and technologies: Newbuifding will conform to energy code raquirements � ❑ 10. Will the proposed action connect to an existing public/private water supply? NO YES If No, describe method for providing potable water: 771 11. Will the proposed action connect to existing wastewater utilities? NO YESf� If No, describe method for providing wastewater treatment: ❑ 7 12. a. Does the project site contain, or is it substantially contiguous to, a building, archaeological site, or district NO YES which is listed on the Nat ionai or State Register of Historic Places, or that has been determined by the ❑ Commissioner of the NYS Office of Parks, Recreation and Historic Preservation to be eligible for listing on the State Register of Historic Places? b. Is the project site, or any portion of it, located in or adjacent to an area designated as sensitive for ❑ archaeological sites on the NY State Historic Preservation Office (SHPO) archaeological site inventory? 13. a. Does any portion of the site of the proposed action, or lands adjoining the proposed action, contain NO YES wetlands or other waterbodies regulated by a federal, state or local agency? ❑ b. Would the proposed action physically alter, or encroach into, any existing wetland or waterbody? ❑ If Yes, identify the wetland or waterbody and extent of alterations in square feet or acres Page 2 of 3 14. Identify the typical habitat types that occur on, or are likely to be found on the project site. Check all that apply ❑Shoreline ❑ Forest ❑ Agri cu. IturallgrassIands ❑ Early mid -successional ❑ Wetland ❑ Urban ® Suburban 15. Does the site of the proposed action contain any species of animal, or associated habitats, listed by the State or I NO YES Federal government as threatened or endangered? ❑ ❑ 16. Is the project site located in the I00-year flood plan? NO YES 7 ❑ IT Will the proposed action create storm water discharge, either from point or non -point sources? NO YES If Yes, I� ❑ a. Will storm water discharges flow to adjacent properties? I ❑ ❑ b. Will storm water discharges be directed to established conveyance systems (runoff and storm drains)? ❑ ❑ If Yes, briefly describe: 18. Does the proposed action include construction or other activities that would result in the impoundment of water NO YES or other liquids (e.g., retention pond, waste lagoon. dam)? If Yes, explain the purpose and size of the impoundment: Y El 19. Has the site of the proposed action or an adjoining property been the location of an active or closed solid waste NO YES management facility? If Yes, describe: _ - P/1 ❑ 20.Has the site of the proposed action or an adjoining property been the subject of remediation (ongoing or NO YES completed) for hazardous waste? If Yes, describe: ❑ ❑ I CERTIFY THAT THE INFORMATION PROVIDED ABOVE IS TRUE AND ACCURATE TO THE BEST OF MY KNOWLEDGE Applicant./sponsorinam . Sh arch Date: Signature- Title: Owner & Applicant PRINT FORM I Page 3 of 3 AUTHORIZATION I, Shawn Malchak d/b/a Cortland Used Cars, authorize the following individuals to act as my agents with regard to a development project at 3600 West Road, Cortland, New York 1. Ann Swisher 2. Timothy Buhl, P.E. 3. Francis J. Casulio, Esq. Dated / , 2023, I Shawn Malchak LLI n. �y iL ion% vrc.l'.Ip• Rwtm� C-101 e 11 `_ ' r r 1 I 1 Y 1 I 1 1 1 ! a , � 1 , t REVISIONS TIMOTHY C. BUH L P.E. SITE PLAN Q�+ Y._ # 5ken+. uy:F.V' ry.ORiWpy5E0 CPnS � hF 35 FIRE SAYE 24. AMIN. NY 13021 rnmm,omm mRnwo,Nerlas r e 1 1f R� r s� Sr •� F 5 ! � �ROv •IR �4 I a r - , r' 3 �� r 1 aR - I■ � f r r F ■ h I��� 'y ■r r a1� / Si — i 9 I I I ,1 { • I - - REVISiOHS �1 ° 1 1 1["TIMOTHY C. BUHL PFE, L3TiLITY PLAN W 36 FR!£ LANE 24. AUEUM, NY 13021 aeoorm'tw � WE97 RO/➢ m.�uroy4e■ i7fMRNO CA COAILWO, W M45 TIMOTHY C. BUHL P.E. VLAN aerisions GRADING ANp DRAINAGE �.aa A c M F]RE LANE 24. AVBUM NY L0021 aBm iWu MWESi ROADm mm.�m mxn:wo, xr »ws " yE �Rk sT Q - - - 0.EVISiONS TIMOTHY C. BUHL P.E. ERC7 CON AND SEDIMENT � ON7R�L PLAN ? r N p i �CZMiS.Vi U6EOLIRE 1QjI v 35 FIRE LANF 24. AUBURN. NY 13OZI n Rl mr+wn w. n D. NYI 16 GENERAL NOTCS wtl �EtwrweM Laip[t no�w�nurat wr>:Ep • ewR ulra °� w4 Wn10wR a rIR ittr Tern %X�u�y. d[on 4[denwcm1/lr�.'�o M.rNp%iR3 Crr+ •e ro le rwTecTeo '4 marr-1=r 1. rwxrnewne sows wn sm, :cmtl`iir. euw�r�icrs sno° �"ee ne�xDiin avaeo w e.raa°rnea Dhruaeo°wrr�r, �s ro`Gu.c: cn�ma a�ar.ice >K sa saeuxeo. es °saEmlXee enafD x rra ram coXnwee. wee.,,....m..v or.owoa u drc rwuo x eEornD . 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J� 5EOIMENi I ER05ION CONTROL MW10KE5 TYPICAL N.T 5- MATER1nL STOCKPILING Ierrs°;�roe�mwseee� �w..'sar+.P'aews rgwmd�n.x prI'�iMw�`n�Iwwc irra FVIi en c EoNEGET�ATo 5WALE w Ealo e.. pTS PY XpewrXW4 Raipyr.y aV[I�X.w S'nvuE COH5TRl1�M7N 9rECIFlCAT10113 � cneac owa I '� wuia • • �� rynr ara aartoi � YQ e 5rti FENCE — 1 9rMtlCE N •� � w'a �■ C0N5T9U CTION SNFf�C�4FILJ YONs rmn wrd°un mrlcrm ao. ` II I CPNCRiTE WASrrCM Ey. acr CONSTRUL7lON SPECIFICATIONS C0N5TP41CT10N 5FECIFICATION5 ,....,a,°„rrdr.sn.nx.me wcwwwTap ru.«R .v.w... wn iarcx'�w.y��.�x o.r"s+rweo.mew�i.wR�nr..a EXCERPTS FROM NYS STANDARDS AND SPECIFICATIONS FOR EROSION ANO SEDIMENT CONTROL NOVEMBER 2016 a� h Z ❑Q <ui z 0 N ggSO^� LU g tl 0 CL y J M� p❑zG IrW e ilO � r 1� W tIS2%M) adrp�X.ES. wave: eno C-106 } —_ 7— _ a ^� wu.moWooa ru�muE MVPIWW 9- 5. ILL I FT �nx�!lrAlaml�aaEar TYRCAL WILE} .THE FrG�A'1 R.4Y i SECTION SNIETS FOIE ESEWTIONS. LULIEkf101fS, llHES i rxR.�0/:S INFILTRATION 5A5fN PLAN i 1 Il I I I I INFILTRATION BASIN SECTION s D E4EF< NCI O RFLON MR Y�nyrx�ry $edrmen� Yrap, AH Rp Rsp W., 2.4' 5bp IV Lmyx�'Wdc - /uniiMS a iEYP. rl]NL1NG NtlA uaKY� iavn rRTCR rAeW[ _ NATivL 5[>w .=5 0. arRWT04 is Oin�g ue nwl pv.edcawnsw. xar.n� vap. yv d r�ri i �0 n °r'"`7° Iw�c {n qW� and be pLw.� wM+y W i �.mwafd ael.nxa aq uen meMnx �rw�wrerrd a.bp�adr �UI•.Fa M�. n rw»• 0 Ld M 2 W m { C V N � 3 o a w L� uxe le �, ffiS icys:1ti10' Ow.w'!OC !oR NNr- C-107 E_xish92 Subcatchment 1 - ESC-i Existing Site Con"ons - Area = 120,294SF (2, 76-AC) Surface Conditions .& Soils 100% Howard. HdC, Hydrologic Sol Group (HSG) A Runoff Curve Number = 30, Wooded, Good HSG A Soils Runoff Curve Number = 39, Gress > 75%, Good HSG A Soils Runoff Curve Number = 96, Gravel and Brush. Good HSG A Soils Overland Stormwater Runoff- Longest Flowpath = 505 )f Sheet Flow, Short Grass - 63 ff S = 2.I % avg. Sheet Flow, Woods - 40LF @ 5 = I0.0% Shalfaw Conc. Flow - Grassed Waterway - 402 ff 0 S - 1.2°I avg. To Pesign Paint I - (DP I) .I I Off --Site Subcafshment I.OSC-I Proposed Site Condroons - Area = 29,462 SF (0. 66-AC) Surface Corx"Ons & Soils: 100% Howard, HdC, Hydrologic Sol Group (HSG) A Runoff Curve Number = 30, Wooded. Good HSG A Soils Runoff Curve Number = 39. 5930 Grass>75%, Good HSG A Soils Runoff Curve Number = 96, Gravel and Brush. Good HSG A Soils Overland SYarmwater Rurmff- Longest Flawpath = 331 ff +/- Sheet Flow, Short Grass - 63 ff & 5 - 2.I3% avg. Shee Flaw, Wooded - 40 If @ S = I0% avg. Shallow Conc. Flow - Unpaved - 97 ff @ S = 2.9% avg. Trap/Vee Channel Flow - I3I If @ 5 = 2.2% avg. To Design Point I - (DP I) Proposed Subcatchment I - PSC-I Proposed Site Condihons - Argo = 90,844 SF (2.09-AC) Surface Conditions & Soils. 100% Howard, HdC, Hydrologic Sol Group (HSG) A Runoff Curve Number = 39, Grass >75%. Good HSG A Soils Runoff Curve Number = 98, Paved Parking and Roofts, Good HSG A Soils RuW Curve Number = 96, Gravel and Brush, Good HSG A Aolls UFU 0vedand Stormwater Runoff- Longest Flo"M = 360 ff +,t O ui Sheaf Flow, Short Grass - fiI If rli S = 3.2%avg. g y I � Shallow Conc. Flow - Paved - 72 ff S = 0.S% avg. pK a'3^ Circular Pipe Flaw, 8" - 227 if 0 S = 0.4% avg. -0 ��a To Design Paint I - (DP I) .I REFERENCE HYDROCAD (HYDRAULIC & HYOROLOGIC) MODELING RESULTS PRESENTED WITH THESE PLANS ��smc seer C-108 �ti 1"'� r{GYry ..ter �.. -,!j Qer.aa .. .m+w r PMA'4/Nr pT�n LGt�. ARE AM%CT PNVMYBif ';C-LT A I;z a �•ma r rr.w.. a .. 6u2v rew ndN xrAL -".E E24M+D oET w� . r r .,. if�Cf� "" �••I� C k f � YYPIGI POF"* 57RFM W-TAL VANW.Viw �mx ww arm � ! • Iw7 7,. ! �P SURVEY MAY _ LAn OF - ]ANE3 HALL T MW OF CORrG!!➢H -- QNPTY OF [ORTUIN L. A N rI D F 5 1 6 N ❑ A r A .0 Pb o Lm719 0 V E R A 6 E J A z s Z a� 4d N x o C o1 S w 1 Lj Z a8 �- U� 5r-1 YL(A-ninj3Nc•4i] oPRONT ELEVATION �,,W.« P110"E0 NEW DEALFFSMP CORTLAND USED GARS u u A w-fd tG:►��C+ �+1 e� � cJr,�� PROPOSED NEW DEALERSHIP CORTLAND USED CARS g�� Iw�wP ►4-e�xs�s xu�aw�e �� ���iv�erwe� ��awl+/'1�w�reMte�w ��ti•�iiaw�s Y�6w�v.+rviaw�w�[N�e,a .w .ws __ .i swe�w yu� ✓ �rw.Ww.na Me Ppr.."M..r w.wewcw we ..aaK �R �� w�i.�rhT�r 1�. ri�e"ira .i�w,e rer w"wea we ,....ram..... I LAWION MAP x W.ra a u L PROJECT: Proposed Used Car Dealership Application OWNER: Shawn Malchak ADDRESS: 3600 West Road, Cortland, NY.13045 Parcel(s) 95.12-01-21.000 and 95.12-01-24.000 This narrative shall be included in the Planning Board Review to answer questions and/or concerns as described in the Aquifer Protection District regulations Article X Section 178,45 (B) Restriction and Requirements. (1.) All petroleum bulk storage will be installed above ground and will be in compliance with State regulations. (2) The Applicant will apply for the necessary permits required for bulk storage of petroleum products. (3.) N/A (4.) (a) All floor drains in the proposed facility will be connected to the santitary sewer equipped with an oil grease separator. (b)(c)(d) All waste, oil and degreasing solvents collected will be stored in an enclosed containment area and will be disposed of through a licensed waste hauler. (e) Storage for tanks and/or drums located inside the facility will have coated concrete floors with dikes to retain accidental spills or leaks. Drums will be sealed, and tanks and drums will be located away from floor drains. A larger holding tank that is shown outside, will also have a berm or dike with a permanent roof to protect the tank and to prevent precipitation from entering dikes. (f) Drip pans will be kept beneath drums which have spigots and are stored in horizontal position an racks. (g) Potentially contaminated scrap parts, batteries, filters, etc., will be stored in proper containers to prevent any release of contaminants. (5.) N/A (6.) NIA (7.)The proposed new facility will replace are existing smaller Used Car Sales facility on the existing site. The new facility will have a 2260 st, showroom with two (2) offices and a unisex handicapped bathroom. The remaining building will provide a 2 lane car wash for washing the cars on site. There will be no public access to the car wash bays. There are (6) service bays, another unisex bathroom and a utility room within the service area. Six (6) overhead doors provide entry and exit on each side of the building, along with two (2) mandoors, one (1) on each side. Stairs in the service area lead up to a mezzanine that will be used for storage. The exterior provides a covered walkway around three (3) sides of the showroom area. Handicapped curb cuts and two (2) parking spaces have been provided with van access. A fire safety lane has been provided around the entire perimeter of the building. Snow removal has been indicated at the rear Northeast corner off the pavement area with more than 50' separation from the drainage areas on site. Site lighting is provided by existing pole mounted lights that are directed to the pavement area and do not provide unnecessary glare to any surrounding properties. Existing vegetation provides a natural buffer to these adjacent properties also. The new sewer and water lines will connect to the existing utility lines where the original Sales office was located. These existing utility line connect to the mains on West Road. There is one (1) new 50 sf. sign proposed on the front facade of the building. The final design and size of the sign will be by the Town. There is no additional increase in traffic anticipated by the expansion of the building. There is a turning lane located directly in front of the entrance to the site on West Road. The existing entrance will remain and provide ingress and egress onto the site. (8.) NIA Storm Water Pollution Prevention Plan Revision for Cortland Used Cars - Shawn Malchak Town of Cortlandville Cortland, New York February 2023 Prepared by: Timothy C. Buhl, PE NYSPE#: 053134 For: Shawn Malchek 3600 West Road Cortland, NY 13045 TABLE OF CONTENTS 1.0 EXECUTIVE SUMMARY.................................................................................. 2 2.0 INTRODUCTION............................................................................................... 7 3.0 PROJECT DESCRIPTION............................................................................... 9 4.0 RUNOFF REDUCTION VOLUME................................................................10 5.0 STORM WATER POLLUTION PREVENTION MEASURES AND CONTROLS.......................................................................................................12 6.0 LOCAL PLANS.................................................................................................15 7.0 STATE HISTORIC PRESERVATION.......................................................... 15 8.0 ENVIRONMENTAL MAPPING..................................................................... 15 9.0 INSPECTIONS AND SYSTEM MAINTENANCE.......................................15 10.0 POST CONSTRUCTION INSPECTION, OPERATION AND MAINTENANCE............................................................................................17 ATTACHMENTS Attachment A: Notice of Intent, (NOI) and MS4 Acceptance Form (if applicable) Attachment B: Notice of Termination, (NOT) Attachment C: Certification Forms Attachment D: State Historic Preservation Mapping - NYSSHPO Attachment E: Environmental Mapping Attachment F: Inspection Report (Sample Form) Attachment G: Record of Stabilization and Construction Activity Dates Attachment H: Vegetative and Structural. Measures for Erosion and Sediment Control New York State Standards & Specifications for Erosion and Sediment Control Attachment I: NYSDEC Stormwater Controls Construction Checklist Attachment J: NYSDEC Controls Operation & Maintenance Check List Attachment K: Stormwater Management Summary 1.0 EXECUTIVE SUMMARY The engineer, owner and all contractors involved with construction activity that disturb site soil or who implement pollutant control measures identified in the Storm Water Pollution Prevention Plan (SWPPP) are responsible for complying with the requirements set forth in the New York State Department of Environmental Conservations SPDES General Permit from Construction Activity Permit No. GP-0-20-001 and any local and/or state governing agencies having jurisdiction with regards to erosion and sediment control. The proposed project involves major activities associated with the construction of a commercial retail building, associated asphalt drives and parking areas, and landscaping within a 2.76-AC drainage area in the Town of Cortlandville, Cortland, NY. As the area of disturbance for this project will be over an acre (2.04-AC) a Full SWPPP has been prepared which requires the preparation of a plan that includes post -construction stormwater management practices. The requirements of the SPDES Permit are as follows: A. Owner: Shawn Malchak 3600 West Road Cortland, NY 13045 607-756-8089 www.cortlandusedcars.net Project Site: Tax Map ID 95.12-01-21.00 and 24.00 3600 West Road Cortland, NY 13045 A project that is subject to the requirements of a regulated, traditional land use control MS4 must meet conditions 1-4 before authorization is given to discharge stormwater. A project not subject to the requirements of a regulated, traditional land use control MS4 (The Town of Cortlandville) shall meet conditions 2-4. 1. An owner or operator that is subject to the requirements of a regulated, traditional land use control MS4, must have its SWPPP reviewed and 2 1 P a g e accepted by the regulated MS4 prior to submitting the NDI to the Department. The owner or operator shall then have the "MS4 SWPPP Acceptance Form," as provided in Attachment A, authorized by the MS4 and submitted to the Department along with the NQI for approval. 2. Complete the Notice of Intent (NQI) provided in Attachment A and forward to the recipients following this section. Five (5) business days from the date the Department receives a complete electronic version of the NGI (eNGI) for construction activities with a SWPPP that has been preopared in conformance with the design criteria in the technical standard referenced in Part III.B.1. of the SPDES General Permit and the performance ciiteria in the technical standard referenced in Parts III.B., 2 or 3 of the SPDES general permit, for construction activities that require post -construction stormwater management practices pursuant to Part III.C. of the SPDES General Permit; or 3. Sixty (60) business days from the date the Department receives a complete NOI (electronic or paper version) for construction activities with a SWPPP that has not been prepared in conformance with the design criteria in technical standard referenced in Part III.B.1. or, for construction activities that require post -construction stormwater management practices pursuant to Part III.C., the performance criteria in the technical standard referenced in Parts III.B., 2 or 3, or; 4. Ten (10) business days from the date the Department receives a complete paper version of the NQI for construction activities with a SWPPP that has been prepared in conformance with the design criteria in technical standard referenced in Part III.B.1. or, for construction activities that require post -construction stormwater. Although the Town of Cortlandville is not a regulated MS4, the project is subject to their Town ordinance. As such, the regulated local reviewing agent is listed as: Town of Cortlandville — Town Hall The Raymond G. Thorpe Municipal Building 3577 Terrace Road Cortland, NY 13045 (607) 756-6091 NDI Recipient: NYS Department of Environmental Conservation (DEC) Division of Water 31Page 625 Broadway, 4th Floor Albany, New York 12233-3505 All notifications shall be sent via certified mail with return receipt. Copies of mailing receipts shall be kept on record at the project site with the SWPPP and shall be considered part of the contract documents. The Town's representative shall be included in the pre -construction meeting. Copies of the SWPPP must be provided to the Town of Cortlandville once all signatures and attachments are complete. A copy of the General Construction Permit (GP-0-20-001), Notice of Intent (NOI), NOI acknowledgement letter received by the DEC, and MS4 Acceptance Form (if applicable), shall be posted in a prominent place for public viewing at the project site. C. A complete copy of the SWPPP, NOI, NGI Acknowledgement letter, MS4 Acceptance form (if applicable), including copies of all inspection reports, plan revisions, etc., must be retained at the project site at all times during working hours and kept as part of the permanent project records for a duration of no less than five (5) years following submission of the Notice of Termination (NOT). D. The site development contractors must provide names and addresses of all subcontractors working on the project who will be involved with the major construction activities that will result in soil disturbance. The Owner shall ensure that each contracting firm identifies one trained individual who will be responsible for implementation of the SWPPP. The owner shall also ensure that at least one trained individual is on site daily when soil disturbance activities are being performed. This information must be retained as part of the SWPPP. E. The site development contractor and all subcontractors involved with the major construction activities that disturb site soil must sign a copy of the appropriate certification statement included in Attachment C along with the identity of the appropriate trained individual as described in paragraph D of this section. F. Regular inspections must be made to determine effectiveness of the SWPPP. It would be modified as needed to prevent pollutants from discharging from the site. The inspector must be a person familiar with the site, the nature of the major construction activities, and qualified to evaluate both overall system performance and individual component performance. Additionally, the inspector must either be someone empowered to implement modifications to the SWPPP and the pollutant control devices, if needed, in order to 4111age increase effectiveness to an acceptable level, or someone with the authority to cause such events to happen. G. This SWPPP must be updated each time there is a significant modification to the pollutant prevention system or a change of contractors working on the project who may disturb site soil. The site development contractor must notify the governing agency(s) as soon as these modifications are implemented. H. Discharge of oil or other hazardous substances into the storm water is subject to reporting and cleanup requirements. Refer to Part I.B.l.d of the SPDES General Permit for additional information. Copies of the SPDES General Permit and the Notice of Intent Forms may be found on-line. I. Notice of Termination (NOT) - Once the site reaches final stabilization upon completion of the project, Shawn Malchek, as Owner, may terminate coverage of SPDES permit coverage by submitting a Notice of Termination, Form (included in Attachment B), when one or more of the following conditions are met: 1. Total Project Completion - All construction activity identified in the SWPPP has been completed; and all disturbance has achieved final stabilization by establishing a uniform, perennial vegetative cover, with a density of eighty (80) percent over the entire pervious surface. In addition, 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. 2. Planned shutdown with partial project completion — All soil disturbance activities have ceased; and all areas disturbed as of the project shut down date 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. 3. A new owner or operator has obtained coverage under the General SPDES Permit in accordance with Part II.F. 4. The owner or operator obtains coverage under an alternative SPDES General Permit or individual SPDES permit. For construction activities meeting 1.0.I above, the owner or operator shall have a 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 51Page statements on the NOT, certify that all requirements of the SPDES General Permit have been met. Further, construction activities subject to the requirements of a regulated, transitional land use control MS4 (if applicable), must have the MS4 sign the "MS4 acceptance" statement on the NOT, indicating that the project has been constructed in accordance SPDES General Permit requirements. Lastly, for construction activities that require post -construction stormwater management practices, the owner or operator must, prior to submitting the NOT, ensure one of the following: 1. The post -construction stormwater management practices and any right of ways needed to maintain such practices have been deeded to the municipality in which the practice is located. 2. An executed maintenance agreement is in place with the municipality that will maintain the post -construction stormwater management practices. 3. If the post -constructed management practices are privately owned, the owner or operator must have a mechanism in place that requires operation and maintenance of the practices in accordance with the operation and maintenance plan, such as a deed covenant in the owner or operator's deed of record. 4. If the post -constructed practices are owned by a public or private institution, government agency or authority, or public utility, the owner or operator has policy and procedure in place that ensures operation and maintenance of the practices in accordance with the operation and maintenance plan. J. This SWPPP intends to control water -borne and liquid pollutant discharges by some combination of interception, filtration, and containment. The general contractor and subcontractors implementing this SWPPP must remain alert to the need to periodically refine and update the SWPPP in order to accomplish the intended goals. K. This SWPPP must be amended as necessary during the course of construction in order to keep it current with the pollutant control measures utilized at the site. Amending the SWPPP does not mean that it has to be reprinted. It is acceptable to add addenda, sketches, new sections, and/or revised drawings. L. A record of the dates when major grading activities occur, when construction activities temporarily or permanently cease on a portion of the site, and when stabilization measures are initiated must be maintained until the NOT is 61Page filed. A log for keeping such records is included in the Attachments. A different form for the log may be substituted if it is found to be more useful. 2.0 INTRODUCTION This SWPPP has been prepared for major activities associated with the construction of a commercial retail/service building, along with associated parking areas, landscaping, and public water and sewer. The Malchek Car Lot is located in the Town of Cortlandville, Cortland, New York along State Highway 281 (West Road) approximately 400 feet south of the intersection of County Highway 120 (McLean Road) and West Road and 1,780 feet north of the intersection of Lamont Circle and West Roads. The property sits on a parcel roughly 202,140-SF (4.64-AC) in size which is shared by an existing automotive retail building and parking area to the west. The drainage area is 2.76-AC flowing from the southwest to the northeast toward a natural drainage swale which outlets along McLean Road just to the north. The total land disturbance will be approximately 2.04 acres over a single construction phase. The total impervious cover added by the project is 36% based on the calculated ratio of proposed new impervious surface area to existing impervious. This report includes the Full SWPPP elements necessary to comply with the SPDES General Permit for Stormwater Discharges GP-0-20-001 administered by the New York State Department of Environmental Protection, the U.S. Environmental Protection Agency (EPA) under the National Pollutant Discharge Elimination System (NPDES) program and all local governing agency requirements. This SWPPP must be implemented at the start of construction. Construction phase pollutant sources anticipated at the site are disturbed (bare) soil, vehicle fuels and lubricants, chemicals associated with building construction, and building materials. Without adequate control there is the potential for each type of pollutant to be transported by storm water. The project will consist primarily of the construction of a single 7,200-SF commercial building along with public water and sewer systems as well as connections to other service utilities ie. (gas, electric, phone). Permanent stormwater management facilities include a single infiltration basin and forebay which has been designed to provide water quality treatment and to attenuate large volume storms to less than pre -developed conditions. A. Purpose The major goal of pollution prevention efforts during project construction is to control the migration of soil and pollutants that originate on -site and prevent them from impacting surface waters and the environment. The purpose of this SWPPP is to provide guidelines for achieving that goal. A successful pollution prevention program also relies upon careful inspection and adjustments during the construction process in order to enhance its effectiveness. 71Page B. Scope This SWPPP must be implemented before construction begins on the site. It primarily addresses the impact of storm rainfall and runoff in areas of the ground surface disturbed during the construction process. In addition, there are recommendations for controlling other sources of pollution that could accompany the major construction activities. This SWPPP will terminate when disturbed areas are stabilized, construction activities covered herein have ceased, and a completed Notice of Termination (NOT) is mailed to the governing agency requiring the NOT. See Section 1.0.I for specific NOT eligibility requirements. Particular forms are included which are necessary for implementing the SWPPP. The SPDES General Permit for Storm Water Discharges from Construction Activities prohibits most non -storm water discharges during the construction phase. Allowable non -storm water discharges that could occur during construction on this project, which would therefore be covered by the General Permit, include: 1. Discharges from fire fighting activities; 2. Fire hydrant flushing; 3. Waters to which cleansers or other components have not been added that are used to wash vehicles or control dust; 4. Routine external building washdown which does not use detergents; 5. Irrigation drainage; d. Uncontaminated discharges from construction site de -watering operations; 7. External building wash down which does not use detergents; S. Runoff from pavement wash down where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents have not been used; 9. Air conditioning condensate; 10. Springs and uncontaminated groundwater; and 8 1 P a g e 11. Foundation or footing drains where flows are not contaminated with process materials such as solvents. The techniques described in this SWPPP focus on providing control of pollutant discharges with practical approaches that utilize readily available expertise, materials, and equipment. The Owner referred to in this SWPPP is Shawn Malchek. 3.0 PROJECT DESCRIPTION Described below are the major construction activities that are subject to this SWPPP. The Owner shall not disturb greater than five (5) acres of soil at any one time without prior written authorization from the DEC, or, in areas under the jurisdiction of a regulated MS4, authorization by that municipality. They are presented in the order (or sequence) they are expected to begin, but each activity will not necessarily be completed before the next begins. Install erosion and sediment control measures as shown on Drainage, Sediment and Erosion Control Plans, down slope from construction activities that disturb site soil before disturbance of soil; CONSTRUCTION PHASE 1 A. Construction of stabilized construction entrance; B. Construction of stabilized surface for temporary construction parking; C. Placement of silt fence; D. Construction of, forebay and infiltration basin as shown on plans; E. Construction of any temporary swales or diversion ditches necessary to temporarily bring flow to the forebay control practices; F. Site grading; G. Construction of parking areas and drives; H. Construction of general utility services (ie. Water mains, sewer piping, storm piping) I. Building construction; J. Construction of water supply and sewer collection system; K. Construction of other utility service connections (gas, electric, phone); 9111age Note: For all Underground Utilities— Sediment barriers will be utilized as required to bind the down slope side of utility construction and soil stockpiles; L. Remove accumulated sedimentation from the forebay. Return property to permanent lines and grades; M. Final Grading Mulching & Seeding — Sediment barriers will be maintained down slope from disturbed soil during these operations; N. Completion of site stabilization, ie. Vegetative cover, driveway surface. Sediment & Erosion Controls to remain in place until vegetative cover reaches 80% density. 4.0 RUNOFF REDUCTION VOLUME This project follows guidelines set forth by the DEC for runoff reduction. Chapter 3 of the New York State Stormwater Management Design Manual requires a five step planning process to document compliance with required processes. Step 1— Protect natural resources and utilize site hvdroloev This planning step is designed to preserve area natural resources by protecting areas, avoiding sensitive locations, and minimizing grading and soil disturbances. There were no erodible soils, critical areas, wetlands, riparian buffer areas, or locally listed protected areas. Another component of the planning process is an evaluation of all green infrastructure practices that might be acceptable for runoff reduction on site. This project will utilize an infiltration basin. The selection process is described as follows: o Conservation of natural areas — Pre -development hydrology and water quality characteristics of undisturbed natural areas remains unaltered. o Sheetflow to riparian buffers — None were available on -site. o Vegetated open swales — Site runoff will be collected and directed to specific treatment practices by way of strategic grading. o Tree planting/tree box — This was not a specific reduction practice considered for this project. o Disconnection of rooftop runoff — No availability. o Stream daylighting for redevelopment projects — None on site. 101Page o Bioswale — An infiltration basin will be used for treatment. o Green roof — This practice was cost prohibitive to the project and is impractical for individual homes. As such, this option was not considered. o Stormwater planters — Not used. o Rain cistern — This practice was considered impractical for the overall usage and square footage of the developed parcels. Source control measures using an infiltration basin was considered instead. o Porous pavement - This practice was cost prohibitive to the project and as such, this was not considered. Step 2 — Determine Overall Water Quality Treatment Volume (WQv) See Attachment K for the calculation summary. Step 3 — Runoff reduction by applvinv green infrastructure technolovv and standard qMP�. Green infrastructure techniques were evaluated to potentially reduce the overall water quality volume. Green infrastructure practices used for this project were identified in Steps 1 and 2. The majority of site controls was through the use of a single infiltration basin to meet overall water quality volume and runoff reduction volume calculations. As shown in Attachment K, minimum requirements for runoff reduction volume were met. Step 4 — Provide standard practices to address remaining water quality volume The infiltration basin and corresponding forebay meets 100% of the WQv. There is no remaining water quality volume. Reference Attachment K for the overall treatment calculations. Step 5 — Apply volume and Deak rate control practices if still required Peak rate control is met using the infiltration basin. The practice reduces runoff from the proposed development to less than pre -developed conditions. See modeling report output for further information. 111C1agC 5.0 STORM WATER POLLUTION PREVENTION MEASURES AND CONTROLS Various erosion and sediment control measures have been incorporated into the design of the project, Reference Stormwater, Sediment and Erosion Control Plans accompanying this SWPPP. These measures will be implemented during construction to minimize soil erosion and to protect the character and integrity of downstream receiving waters. A single infiltration basin and forebay will remain upon completion of the project to control the quality of stormwater from the developed site. The site development contractor shall take all appropriate precautions to prevent soil erosion and discharge of sediment and other pollutants to receiving water bodies and wetlands. Specific measures are outlined in this plan. In general, disturbance areas shall be limited to the smallest practical areas at any given time, and the areas are to be reseeded as soon as possible. During construction the measures outlined in this document and shown on the plans are to be installed as described. Additional measures may be warranted or required by site and climatic conditions. Specific erosion control measures, designed to minimize soil loss, and sediment control measures devised to retain eroded soil and prevent it from reaching water bodies or adjoining properties have been developed in accordance with the New York State Stormwater Management DesiLyn Manual. 2015, NYSDEC and New York Standards & Specifications for Erosion and Sedimentation Control, November 2016. Reference Attachment H for copy of Vegetative and Structural, Measures for Erosion and Sediment Control, New York State Standards & Specifications for Erosion and Sedimentation Control. (Vegetative; November 2015, Structural; August 2005) A variety of storm water pollutant controls are recommended for this project. Some controls are intended to function temporarily and will be used as needed for pollutant control during the construction. These include temporary sediment and erosion control measures as shown on the plans including a stabilized construction entrance, silt fencing, and concrete washout area. Permanent erosion control stormwater facilities are planned including an infiltration basin and diversion Swale. For all disturbed areas, permanent stabilization will be accomplished by covering the disturbed soil with vegetation, pavement, or commercial structures. A. Erosion and Sediment Controls 1. Soil Stabilization — The purpose of soil stabilization is to prevent soil from leaving the site. In the natural condition, soil is stabilized by native vegetation. The primary technique to be used under this project for stabilizing site soil will be to provide a protective cover of turf grass, pavement, or building structure. 121Page a. Temporary Seeding - Where land disturbance is necessary, temporary seeding with fast -germinating temporary seed and a protection of mulch must be used on areas which will be exposed for more than 14 days. b. Permanent Seeding — All areas at final grade must be seeded and mulched within 7 days after completion of the major activity. c. Structural Controls — The storm water will be managed on site utilizing proposed site grading and associated swale drainage systems. Their design is shown on the Project Site Stormwater Plans. Final site stabilization is achieved when there is a uniform 80 percent density of permanent vegetation on all previously disturbed soil surfaces, exclusive of areas that have been paved. B. Other Pollutant Controls Control of sediments has been described previously. Other aspects of this SWPPP are listed below: 1. Dust Control — Construction traffic must enter and exit the site at the stabilized construction/driveway entrance. The purpose is to trap dust and mud that would otherwise be carried off -site by construction traffic. Dust control must be provided by the general contractor to a degree that is acceptable to the Owner, and in compliance with applicable local and state dust control regulations. After construction, the site will be stabilized (as described elsewhere), which will reduce the potential for dust generation. 2. Solid Waste Disposal — No solid materials, including building materials, are allowed to be discharged from the site with storm water. All solid waste, including disposable materials incidental to the major construction activities, must be collected and placed in containers. The containers will be emptied periodically by a contract trash disposal service and hauled away from the site. Substances that have the potential for polluting surface and/or groundwater must be controlled by whatever means necessary in order to ensure that they do not discharge from the site. As an example, special care must be exercised during equipment fueling and servicing operations. If a spill occurs, it must be contained and disposed so that it will not flow from the site or enter groundwater, even if this requires 131Page removal, treatment, and disposal of soil. In this regard, potentially polluting substances should be handled in a manner consistent with the impact they represent. 3. Sanitary Facilities — All personnel involved with construction activities must comply with state and local sanitary or septic system regulations. Temporary sanitary facilities will be provided at the site throughout the construction phase. They must be utilized by all construction personnel and will be serviced by a commercial contractor. 4. Water Source — Non -storm water components of site discharge must be clean water. Water used for construction, which discharges from the site, must originate from a public water supply or private well approved by the State Health Department. Water used for construction that does not ❑riginate from an approved public supply must not discharge from the site. It can be retained in temporary ponds until it infiltrates and evaporates. 5. Long -Term Pollutant Controls — Storm water pollutant control measures installed during construction that will also provide benefits after construction, include one (1) infiltration basin and one (1) diversion Swale. All silt fencing must be removed once the site has received proper stabilization. C. Construction Phase "Best Management Practices" During the construction phase, the general contractor will implement the following measures: 1. Permanent traffic corridors shall be established and "routes of convenience" shall be avoided; 2. Preservation of existing vegetation as much as possible. Following the completion of construction activities in any portion of the site permanent vegetation shall be established an all exposed soils; 3. Site preparation activities shall be planned to minimize the area and duration of soil disruption; 4. Minimizing soil erosion and sedimentation by stabilization of disturbed areas and by removing sediment from construction site discharges; 5. Material resulting from the clearing and grubbing operation will be stockpiled up slope from adequate sedimentation controls. 141Page 6. The general contractor will designate areas for equipment cleaning, maintenance, and repair. The general contractor and subcontractors will utilize those areas. The areas will be protected by a temporary perimeter berm. 7. Use of detergents for large scale washing is prohibited (i.e., vehicles, buildings, pavement surfaces, etc.) S. Chemicals, paints, solvents, fertilizers, and other toxic material must be stored in waterproof containers. Except during application, the contents must be kept in trucks or within storage facilities. Runoff containing such material must be collected, removed from the site, treated and disposed at an approved solid waste or chemical disposal facility. 6.0 LOCAL PLANS In addition to this SWPPP, construction activities associated with this project must comply with any guidelines set forth by local and state regulatory agencies. 7.0 NYSHPO A search was conducted on the New York State Parks, Recreation and Historic Preservation Office website to identify whether the subject parcel is listed under natural or historic places registration, or if the area resides within an archaeologically sensitive location. Attachment D, includes a "grey map" indicating that the property is not within a sensitive area. 8.0 ENVIRONMENTAL MAPPING A search was conducted on the Cortland County, New York State, and Federal Inventory websites to identify any areas with known wetlands, protected plants or animal species, or any significant environmental concerns that could be impacted by this project. There is no conflict with the development. Please see Attachment E for screen prints of this review. 9.0 INSPECTIONS AND SYSTEM MAINTENANCE Between the time this SWPPP is implemented and final site stabilization is achieved, all disturbed areas and pollutant controls must be inspected at least once every seven calendar days by a licensed professional or Qualified Inspector, as identified by the SPDES General Permit. The purpose of site inspections is t❑ assess performance of pollutant controls. The inspections will be conducted by an independent third party Qualified Inspector to be provided by the Owner. The Owner/Operator will also be required to arrange for a designated Trained Contractor (as defined by the SPDES General Permit) to be responsible for the 151Page management of this SWPPP during construction, while on -site. Based on these inspections, the Trained Contractor will decide whether it is necessary to modify this SWPPP, add or relocate sediment barriers, or whatever else may be needed in order to prevent pollutants from leaving the site via storm water runoff. The Trained Contractor has the duty to cause pollutant control measures to be repaired, modified, maintained, supplemented, or whatever else is necessary in order to achieve effective pollutant control. Examples of particular items to evaluate during site inspections are listed below. This list is not intended to be comprehensive. During each inspection the inspector must evaluate overall pollutant control system performance as well as particular details of individual system components. Additional factors should be considered as appropriate to the circumstances. A. Construction of stormwater facilities. Insure facilities are constructed substantially in accordance with the plans. (Also, Reference Attachment I for sample inspection checklist - NYSDEC Stormwater Construction Checklist): B. Locations where vehicles enter and exit the site must be inspected for evidence of off -site sediment tracking. A stabilized construction entrance will be constructed where vehicles enter and exit. This entrance will be maintained or supplemented as necessary to prevent sediment from leaving the site on vehicles. C. Sediment barriers must be inspected and, if necessary, they must be enlarged or cleaned in order to provide additional capacity. All material from behind sediment barriers will be stockpiled on the up slope side. Additional sediment barriers must be constructed as needed. D. Inspections will evaluate disturbed areas and areas used for storing materials that are exposed to rainfall for evidence of, or the potential for, pollutants entering the drainage system. If necessary, the materials must be covered or original covers must be repaired or supplemented. Also, protective berms must be constructed, if needed, in order to contain runoff from material storage areas. E. Grassed areas will be inspected to confirm that a healthy stand of grass is maintained. The site has achieved final stabilization once all areas are covered with building foundation or pavement, or have a stand of grass with at least 80 percent density. The density of 80 percent or greater must be maintained to be considered as stabilized. Areas must be watered, fertilized, and reseeded as needed to achieve this goal. F. All discharge points must be inspected to determine whether erosion control measures are effective in preventing significant impacts to receiving waters. Based on inspection results, any modification necessary to increase effectiveness of this SWPPP to an acceptable level must be made within seven calendar days of the 16111age inspection. The inspection reports must be completed entirely and additional remarks should be included if needed to fully describe a situation. An important aspect of the inspection report is the description of additional measures that need to be taken to enhance plan effectiveness. The inspection report must identify whether the site was in compliance with the SWPPP at the time of inspection and specifically identify all incidents of non-compliance. Inspection reports must be kept on file by the Trained Contractor as an integral part of this SWPPP for at least five years from the date of completion and filing of NOT for the project. Ultimately, it is the responsibility of the site Trained Contractor to assure the adequacy of site pollutant discharge controls. Actual physical site conditions or contractor practices could make it necessary t❑ install more structural controls than are shown on the plans. (For example, localized concentrations of runoff could make it necessary to install additional sediment barriers.) Assessing the need for additional controls and implementing them or adjusting existing controls will be a continuing aspect of this SWPPP until the site achieves final stabilization A sample copy of an inspection report for use by the Trained Contractor is included in Attachment F. 10.0 POST CONSTRUCTION INSPECTION, OPERATION AND MAINTENANCE PLAN A. Maintenance Responsibility Short and long term maintenance responsibilities for the infiltration basin system will lay with Shawn Malchek. Access for maintenance can be achieved by the project drive entrance off of West Road (Route 281). The owner is aware that the following shall be incorporated into the project as part of this O&M post construction management plan: 1. A sign shall be erected in a conspicuous area to identify each stormwater management practice including: Infiltration basin and diversion swale. The sign shall be of a size not less than 18" x 24" (or 10" x 12" for footprints smaller than 400 SF) bearing the following information: STORMWATER MANAGEMENT PRACTICE Project Identification (SPDES Permit #) Infiltration Basin, diversion swale Must be maintained in Accordance with O&M Plan 2. A legally binding mechanism shall be used to ensure long term operation and maintenance of the Stormwater management practices. 171Page This mechanism shall be through execution of a maintenance agreement between the owner and the Town of Cortlandville. 3. Copies of the practice designs and details shall be kept on record and be made available at all times. Copies shall also be forwarded to the Town of Cortlandville for archival purposes. E. Sediment & Debris Removal Silt/sediment shall be removed from the infiltration basin forebay when the accumulation exceeds 6 inches. Vegetation within the practices shall be limited to a height of 18 inches. Trash and debris shall be removed as necessary. The removed sediments shall be disposed in an acceptable manner (ie. Landfall) Long term sediment removal in the basin forebays shall occur every five to six years or after 50% of total forebay capacity has been lost. Inspection of the infiltration practices shall take place annually after the spring melt to determine if maintenance is necessary. Sediments excavated from the stormwater controls that have not received runoff from designated hotspots and are generally not considered toxic or hazardous may be safely excavated, transported and used as fill. C. Inspection & Periodic Maintenance To ensure the continued operation and long term performance of the proposed stormwater management system inspections shall be conducted periodically for the first few months following construction and then on an annual basis. Site inspection should also be performed following major storm events (i.e., intense storms, thunder storms, cloud bursts, etc.). Items to check for include, but are not limited to the following: (Reference Attachment J for complete inspection checklist - NYSDEC Stormwater Operation, Maintenance and Management Inspection Checklists): i) Embankment & Structural; F1 Check basin embankments, outlets and spillways note cracks, bulges, animal burrows, differential settlement, damage to or fatigue of stormwater pipe, structures and permanent erosion control. Components of the system that require repair or replacement should be addressed immediately following identification. Check pipes, channels, grates, inlet structures and spillways to insure design capacity. Look for objects or accumulations of sediments and debris obstructing flow path. ii) Vegetation; 181Page ❑ Preclude deep rooted woody plant growth on pond embankment by mowing at least once annually. ❑ Maintain a dense vigorous growth of grass cover. Spot seed, mulch and fertilize where necessary. 19111agC Attachment A: Notice of Intent, (NOI) and MS4 Acceptance Form (if applicable) 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 NGI for coverage under Storm►►vater General Permit for Construction Activity version 1.35 (Submission #: HPQ-Z4RK-G7T9D, version 1) Details Originally Started By Scott Gibson Alternate Identifier Malchek Car Lot Submission ID HPQ-Z4RK-G7T9D Submission Reason New Status Draft Form Input Owner/Operator Information Owner/Operator Name {Company/Private Owner/Municipality/Agency/Institution, etc.) Shawn Malchek Owner/Operator Contact Person Last Name (NOT CONSULTANT) Malchek Owner/Operator Contact Person First Name Shawn Owner/Operator Mailing Address 3600 West Road City Cortland State NY https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 1 /14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 Zip 13045 Phone 607-756-8089 Email NONE PROVIDED Federal Tax ID NONE PROVIDED Project Location Project]Site Name Malchek Car Lot Street Address (Not P.Q. Box) 3600 West Road Side of Street East City[Town/Village (THAT ISSUES BUILDING PERMIT) (T) Cortlandville State NY Zip 13045 DEC Region 7 County TOMPKINS Name of Nearest Cross Street McLean Road Distance to Nearest Cross Street (Feet) 450 Project In Relation to Cross Street South Tax Map Numbers Section -Block -Parcel 95.12-01-21.00 & 24.00 https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 2/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 Tax Map Numbers NONE PROVIDED 1. Coordinates Provide the Geographic Coordinates for the project site. The two methods are: - Navigate to the project location on the map (below) and click to place a marker and obtain the XY coordinates. - The "Find Me" button will provide the lat/long for the person filling out this form. Then pan the map to the correct location and click the map to place a marker and obtain the XY coordinates. Navigate to your location and click on the map to get the X,Y coordinates 42.58089295512499,-76.2134593 0 3 3332 Project Details 2. What is the nature of this project? New Construction 3. Select the predominant land use for both pre and post development conditions. Pre -Development Existing Landuse Commercial Post -Development Future Land Use Commercial 3a. If Single Family Subdivision was selected in question 3, enter the number of subdivision lots. NONE PROVIDED 4. In accordance with the larger common plan of development or sale, enter the total project site acreage, the acreage to be disturbed and the future impervious area (acreage)within the disturbed area. *** ROUND TO THE NEAREST TENTH OF AN ACRE. *** Total Site Area (acres) 2.76 Total Area to be Disturbed (acres) 2.04 Existing Impervious Area to be Disturbed (acres) 0 https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 3/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 Future Impervious Area Within Disturbed Area (acres) 1.00 5. D❑ you plan to disturb more than 5 acres of soil at any one time? No 5. Indicate the percentage (%) of each Hydrologic Soil Group(HSG) at the site. A (%) 100 g 0 C 0 ❑ 0 7. Is this a phased project? No B. Enter the planned start and end dates of the disturbance activities. Start Date 03/01 /2023 End Date 03/01 /2024 9. Identify the nearest surface waterbody(ies) to which construction site runoff will discharge. Otter Creek 9a. Type of waterbody identified in question 9? Stream/Creek Off Site Other Waterbody Type Off Site Description NONE PROVIDED 9b. If "wetland" was selected in 9A, how was the wetland identified? NONE PROVIDED 10. Has the surface waterbody(ies in question 9 been identified as a 303(d) segment in Appendix E of GP-0-20-001? No https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 4/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - NOI for coverage under Stormwater General Permit for Construction Activity. Revision 1 11. Is this project located in one of the Watersheds identified in Appendix C of GP-0- 20-001 ? No 12. Is the project located in one of the watershed areas associated with AA and AA- S classified waters? No If No, skip question 13. 13. Does this construction activity disturb land with no existing impervious cover and where the Soil Slope Phase is identified as D (provided the map unit name is inclusive of slopes greater than 25%), E or F on the USDA Soil Survey? NONE PROVIDED If Yes, what is the acreage to be disturbed? NONE PROVIDED 14. Will the project disturb soils within a State regulated wetland or the protected 100 foot adjacent area? No 15. Does the site runoff enter a separate storm sewer system (including roadside drains, swales, ditches, culverts, etc)? Yes 16. What is the name ❑f the municipality/entity that owns the separate storm sewer system? Town of Cortlandville 17. ❑oes any runoff from the site enter a sewer classified as a Combined Sewer? No 18. Will future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law? No 19. Is this property owned by a state authority, state agency, federal government or local government? No 20. Is this a remediation project being done under a Department approved work plan? (i.e. CERCLA, RCRA, Voluntary Cleanup Agreement, etc.) No Required SWPPP Components https:llnform-prod.dec. ny.govlappt#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52111 5.114 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 21. Has the required Erosion and Sediment Control component of the SWPPP been developed in conformance with the current NYS Standards and Specifications for Erosion and Sediment Control (aka Blue Book)? Yes 22. Does this construction activity require the development of a SWPPP that includes the post -construction stormwater management practice component (i.e. Runoff Reduction, Water quality and quantity Control practices/techniques)? Yes If you answered No in question 22, skip question 23 and the Post -construction Criteria and Post -construction SMP Identification sections. 23. Has the post -construction stormwater management practice component of the SWPPP been developed in conformance with the current NYS Stormwater Management Design Manual? Yes 24. The Stormwater Pollution Prevention Plan (SWPPP) was prepared by: Professional Engineer (P.E.) SWPPP Preparer Timothy C. Buhl, PE Contact Name (Last, Space, First) Gibson, Scott Mailing Address 5 Orchard Avenue City Watkins Glen State NY Zip 14891 Phone 607-228-0662 Email scottgibsonl98@gmail.com Download SWPPP Preparer Certification Form Please take the following steps to prepare and upload your preparer certification form: 1) Click on the link below to download a blank certification form 2) The certified SWPPP preparer should sign this form https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 6/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 3) Scan the signed form 4) Upload the scanned document Download SWPPP Preparer Certification Form Please upload the SWPPP Preparer Certification NONE PROVIDED Comment NONE PROVIDED Erosion & Sediment Control Criteria 25. Has a construction sequence schedule for the planned management practices been prepared? Yes 26. Select all of the erosion and sediment control practices that will be employed on the project site: Temporary Structural Silt Fence Stabilized Construction Entrance Biotechnical None Vegetative Measures Seeding Mulching Permanent Structural Diversion Other NONE PROVIDED Post -Construction Criteria * IMPORTANT: Completion of Questions 27-39 is not required if response to Question 22 is No. 27. Identify all site planning practices that were used to prepare the final site plan/layout for the project. Reduction of Clearing and Grading https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 7/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 27a. Indicate which of the following soil restoration criteria was used to address the requirements in Section 5.1.6("Soil Restoration") of the Design Manual (2010 version). All disturbed areas will be restored in accordance with the Soil Restoration requirements in Table 5.3 of the Design Manual (see page 5-22). 28. Provide the total Water Quality Volume (WQv) required for this project (based on final site plan/layout). (Acre-feet) 0.084 29. Post -construction SMP Identification Use the Post -construction SMP Identification section to identify the RR techniques (Area Reduction), RR techniques(Volume Reduction) and Standard SMPs with RRv Capacity that were used to reduce the Total WQv Required (#28). Identify the SMPs to be used by providing the total impervious area that contributes runoff to each technique/practice selected. For the Area Reduction Techniques, provide the total contributing area (includes pervious area) and, if applicable, the total impervious area that contributes runoff to the tech niquelpractice. Note: Redevelopment projects shall use the Post -Construction SMP Identification section to identify the SMPs used to treat and/or reduce the WQv required. If runoff reduction techniques will not be used to reduce the required WQv, skip to question 33a after identifying the SMPs. 30. Indicate the Total RRv provided by the RR techniques (Area/Volume Reduction) and Standard SMPs with RRv capacity identified in question 29. (acre-feet) 0.084 31. Is the Total RRv provided (#30) greater than or equal to the total WQv required (#28)? Yes If Yes, go to question 36. If No, go to question 32. 32. Provide the Minimum RRv required based on HSG. [Minimum RRv Required = (P) (0.95) (Ai) / 12, Ai=(s) (Aic)] (acre-feet) NONE PROVIDED 32a. Is the Total RRv provided (#30) greater than or equal to the Minimum RRv Required (#32)? NONE PROVIDED If Yes, go to question 33. Note: Use the space provided in question #39 to summarize the specific site limitations and justification for not reducing 100% of WQv required (#28). A detailed evaluation of the specific site limitations and justification for not reducing 100% of the WQv required (#28) must also be included in the SWPPP. https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 8/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 If No, sizing criteria has not been met; therefore, NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. 33. SMPs Use the Post -construction SMP Identification section to identify the Standard SMPs and, if applicable, the Alternative SMPs to be used to treat the remaining total WQv (=Total WQv Required in #28 - Total RRv Provided in #30). Also, provide the total impervious area that contributes runoff to each practice selected. NOTE: Use the Post -construction SMP Identification section to identify the SMPs used on Redevelopment projects. 33a. Indicate the Total WQv provided (i.e. WQv treated) by the SMPs identified in question #33 and Standard SMPs with RRv Capacity identified in question #29. (acre-feet) NONE PROVIDED Note: For the standard SMPs with RRv capacity, the WQv provided by each practice = the WQv calculated using the contributing drainage area to the practice - provided by the practice. (See Table 3.5 in Design Manual) 34. Provide the sum of the Total RRv provided (#34) and the WQv provided (#33a). NONE PROVIDED 35. Is the sum of the RRv provided (#30) and the WQv provided (#33a) greater than or equal to the total WQv required (#28)? NONE PROVIDED If Yes, go to question 36. If No, sizing criteria has not been met; therefore, NOI can not be processed. SWPPP preparer must modify design to meet sizing criteria. 36. Provide the total Channel Protection Storage Volume (CPv required and provided or select waiver (#36a), if applicable. CPv Required (acre-feet) 0.156 CPv Provided (acre-feet) 0.269 36a. The need to provide channel protection has been waived because: NONE PROVIDED 37. Provide the Overbank Flood (Op) and Extreme Flood (Of) control criteria or select waiver (#37a), if applicable. Overbank Flood Control Criteria (Qp) https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 9/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 Pre -Development (CFS) 7.23 Post -Development (CFS) 0.72 Total Extreme Flood Control Criteria (Qf) Pre -Development (CFS) 13.88 Post -Development (CFS) 12.74 37a. The need to meet the Qp and Qf criteria has been waived because: NONE PROVIDED 38. Has a long term Operation and Maintenance Plan for the post -construction stormwater management practice(s) been developed? Yes If Yes, Identify the entity responsible for the long term Operation and Maintenance Shawn Malchek 39. Use this space to summarize the specific site limitations and justification for not reducing 100% of WQv required (#28). (See question #32a) This space can also be used for other pertinent project information. NONE PROVIDED Post -Construction SMP Identification Runoff Reduction (RR) Techniques, Standard Stormwater Management Practices (SMPs) and Alternative SMPs Identify the Post -construction SMPs to be used by providing the total impervious area that contributes runoff to each technique/practice selected. For the Area Reduction Techniques, provide the total contributing area (includes pervious area) and, if applicable, the total impervious area that contributes runoff to the technique/practice. RR Techniques (Area Reduction) Round to the nearest tenth Total Contributing Acres for Conservation of Natural Area (RR-1) NONE PROVIDED Total Contributing Impervious Acres for Conservation of Natural Area (RR-1) NONE PROVIDED https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 10/14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - NOI for coverage under Stormwater General Permit for Construction Activity. Revision 1 Total Contributing Acres for Sheetflow to Riparian Buffers/Filter Strips (RR-2) NONE PROVIDED Total Contributing Impervious Acres for Sheetflow to Riparian Buffers/Filter Strips (RR-2) NONE PROVIDED Total Contributing Acres for Tree Planting/Tree Pit (RR-3) NONE PROVIDED Total Contributing Impervious Acres for Tree Planting/Tree Pit (RR-3) NONE PROVIDED Total Contributing Acres for Disconnection of Rooftop Runoff (RR-4) NONE PROVIDED RR Techniques (Volume Reduction) Total Contributing Impervious Acres for ❑isconnection of Rooftop Runoff (RR-4) NONE PROVIDED Total Contributing Impervious Acres for Vegetated Swale (RR-5) NONE PROVIDE❑ Total Contributing Impervious Acres for Rain Garden (RR-6) NONE PROVIDED Total Contributing Impervious Acres for Stormwater Planter (RR-7) NONE PROVIDED Total Contributing Impervious Acres for Rain Barrel/Cistern (RR-8) NONE PROVIDED Total Contributing Impervious Acres for Porous Pavement (RR-9) NONE PROVIDED Total Contributing Impervious Acres for Green Roof (RR-1 a) NONE PROVIDE❑ Standard SMPs with RRv Capacity Total Contributing Impervious Acres for Infiltration Trench (1-1) NONE PROVIDE❑ Total Contributing Impervious Acres for Infiltration Basin (1-2) 1.00 https:llnform-prod.dec. ny.govlappt#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52111 11114 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - NOI for coverage under Stormwater General Permit for Construction Activity. Revision 1 Total Contributing Impervious Acres for ❑ry Well (1-3) NONE PROVIDED Total Contributing Impervious Acres for Underground Infiltration System (1-4) NONE PROVIDED Total Contributing Impervious Acres for Bioretention (F-5) NONE PROVIDED Total Contributing Impervious Acres for Dry Swale (0-1) NONE PROVIDE❑ Standard SMPs Total Contributing Impervious Acres for Micropool Extended ❑etention (P-1) NONE PROVIDE❑ Total Contributing Impervious Acres for Wet Pond (P-2) NONE PROVIDED Total Contributing Impervious Acres for Wet Extended ❑etention (P-3) NONE PROVIDED Total Contributing Impervious Acres for Multiple Pond System (P-4) NONE PROVIDED Total Contributing Impervious Acres for Pocket Pond (P-5) NONE PROVIDED Total Contributing Impervious Acres for Surface Sand Filter (F-1) NONE PROVIDED Total Contributing Impervious Acres for Underground Sand Filter (F-2) NONE PROVIDED Total Contributing Impervious Acres for Perimeter Sand Filter (F-3) NONE PROVIDE❑ Total Contributing Impervious Acres for Organic Filter (F-4) NONE PROVIDED Total Contributing Impervious Acres for Shallow Wetland (W-1) NONE PROVIDED Total Contributing Impervious Acres for Extended ❑etention Wetland (W-2) NONE PROVIDED Total Contributing Impervious Acres for Pond/Wetland System (W-3) NONE PROVIDED https:llnform-prod.dec. ny.govlappt#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52111 12.' 14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - NOI for coverage under Stormwater General Permit for Construction Activity. Revision 1 Total Contributing Impervious Acres for Pocket Wetland (W-4) NONE PROVIDED Total Contributing Impervious Acres for Wet Swale (0-2) NONE PROVIDED Alternative SMPs (D❑ NOT INCLUDE PRACTICES BEING USED FOR PRETREATMENT ONLY) Total Contributing Impervious Area for Hydrodynamic NONE PROVIDED Total Contributing Impervious Area for Wet Vault NONE PROVIDED Total Contributing Impervious Area for Media Filter NONE PROVIDED "Other" Alternative SMP? NONE PROVIDED Total Contributing Impervious Area for "Other" NONE PROVIDE❑ Provide the name and manufaturer of the alternative SMPs (i.e. proprietary practices}) being used for WQv treatment. Note: Redevelopment projects which do not use RR techniques, shall use questions 28, 29, 33 and 33a to provide SMPs used, total WQv required and total WQv provided for the project. Manufacturer of Alternative SMP NONE PROVIDED Name of Alternative SMP NONE PROVIDED Other Permits 40. Identify other DEC permits, existing and new, that are required for this project/facility. None If SPDES Multi -Sector GP, then give permit I❑ NONE PROVIDED https:llnform-prod.dec. ny.govlappt#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52111 13.! 14 2/24/23, 8:40 AM NYSDEC e6usiness Portal System - N01 for coverage under Stormwater General Permit for Construction Activity. Revision 1 If other, then identify NONE PROVIDED 41. Does this project require a US Army Corps of Engineers Wetland Permit? No If "Yes," then indicate Size of Impact, in acres, to the nearest tenth NONE PROVIDED 42. If this NOI is being submitted for the purpose of continuing or transferring coverage under a general permit for stormwater runoff from construction activities, please indicate the former SPDES number assigned. NONE PROVIDED MS4 SWPPP Acceptance 43. Is this project subject to the requirements of a regulated, traditional land use control MS4? No If No, skip question 44 44. Has the "MS4 SWPPP Acceptance" form been signed by the principal executive officer or ranking elected official and submitted along with this NOI? NONE PROVIDED MS4 SWPPP Acceptance Form Download Download form from the link below. Complete, sign, and upload. MS4 SWPPP Acceptance Form MS4 Acceptance Form Upload NONE PROVIDED Comment NONE PROVIDED Owner/Operator Certification Owner/Operator Certification Form Download Download the certification form by clicking the link below. Complete, sign, scan, and upload the form. Owner/Operator Certification Form (PDF. 45KB) Upload Owner/Operator Certification Form NONE PROVIDED Comment NONE PROVIDED https:fInform-prod.dec.ny.govlappl#lsubmissionwizardl3a5593fb-a827-4f8c-93a7-7466bl 92fe52l11 14/14 IOppNEW YDRK ORTLIMITV Department of Environmental Conservation SWPPP Preparer Certification Form SPDES General Permit for Stormwater Discharges From Construction Activity (GP-0-20-007) Project Site Information Project/Site Name Malchek Car Lot Owner/Operator Information Owner/Operator (Company Name/Private Owner/Municipality Name) Shawn Malchek Certification Statement — SWPPP Preparer I hereby certify that the Stormwater Pollution Prevention Plan (SWPPP) for this project has been prepared in accordance with the terms and conditions of the GP-0-20-001. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of this permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. Timothy C Buhl First name MI Last Name Signature Date Revised: January 2020 N�wvoaK STATE OF oPPDRTLINITY Owner/Operator Certification Farm SPDES General Permit For Stormwater Discharges From Construction Activity (GP-0-20-001) Project/Site Name: Malchek Car Lot Department of Environmental Conservation eNOI Submission Number: HPQ-Z4RK-G7T9D eNOI Submitted by: P11 Owner/Operator SWPPP Preparer Other Certification Statement - Owner/Operator have read or been advised of the permit conditions and believe that I understand them. I also understand that, under the terms of the permit, there may be reporting requirements. I hereby certify that this document and the corresponding documents were prepared under my direction or supervision. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. I further understand that coverage under the general permit will be identified in the acknowledgment that I will receive as a result of submitting this NOI and can be as long as sixty (60) business days as provided for in the general permit. I also understand that, by submitting this N01, I am acknowledging that the SWPPP has been developed and will be implemented as the first element of construction, and agreeing to comply with all the terms and conditions of the general permit for which this NOI is being submitted. Owner/Operator First Name Signature Date M.I. Last Name Attachment B: Notice of Termination, (NOT) (if applicable) _New York State Department of Environmental Conservation � Division of Water 1,111low 625 Broadway, 4th Floor Albany, New York 12233-3505 *(NOTE: Submit completed form to address above)* NOTICE OF TERMINATION for Storm Water ffischaroe.% Authorized under the SPDES General Permit for Construction Activit. Please indicate your permit identification n u m her: NYR = II. Owner or Operator Information 11. Owner/Operator Name: 12. Street Address: 13. City/State/Zip: 14. Contact Person: 14a_Telephone: 5. Contact Pm. on F-flail: II. Project Site Information 15. Project/Site Name: 16. Street Address: 17. City/Zip; 18. County: IIII. Reason for Termination 9a. L All disturbed areas have achieved final stabilization in accordance with the general permit and SWPPP. *Date final stabilization completed (monthlyear): 9b. C Permit coverage has been transferred to new ownerloperator. Indicate new ownerloperator's permit identification number: NYR (Note: Permit coverage can not be terminated by owner identified in 1.1. above until new owner/operator obtains coverage under the general permit) 19c. U Other (Explain on Page 2) IIV. Final Site Information: I Oa. Did this construction activity require the development of a SWPPP that includes post -construction stormwater management practices? ❑ yes C no (If no, go to question IOf.) 10b. Have all post -construction stonnwater management practices included in the final SWPPP been constructed? ❑ yes I I no (If no, explain on Page 2) 1 Oc. Identify the entity responsible For long-term operation and maintenance of practice(s)? Page 1 of 3 NOTICE OF TERMINATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity - continued 14d. Has the entity responsible for long-term operation and maintenance been given a copy of the operation and maintenance plan required by the general permit'? C yes F no 10e, Indicate the method used to ensure long-term operation and maintenance of the post -construction stormwater management practice(s): r Post -construction stormwater management practice(s) and any right-of-ways) needed to maintain practice(s) have been deeded to the municipality. C Executed maintenance agreement is in place with the municipality that will maintain the post -construction stormwater management practice(s). For post -construction storm water management practices that are privately owned, the deed of record has been modified to include a deed covenant that requires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan. C For post -construction stormwater management practices that are owned by a public or private institution (e.g. school, college, university), or government agency or authority, policy and procedures are in place that ensures operation and maintenance of the practice(s) in accordance with the operation and maintenance plan. ]Of Provide the total area of impervious surface (i.e. roof, pavement, concrete, gravel, etc.) constructed within the disturbance area? (acres) 11. Is this project subject to the requirements of a regulated, traditional land use control MS4? ❑ yes 1 l no (If Yes, complete section VI - "MS4 Acceptance" statement V. Additional Information!Explanation: (Use this section to answer questions 9c. and 10b., if applicable) VI. MS4 Acceptance - MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative (Note: Not required when 9b. is checked -transfer of coverage) I have determined that it is acceptable for the owner or operator of the construction project identified in question 5 to submit the Notice of Termination at this time, Printed Name; Title/Position: Signature: Page 2 of 3 IDate: NOTICE OF TERAMATION for Storm Water Discharges Authorized under the SPDES General Permit for Construction Activity - continued VII. Qualified Inspector Certification - Final Stabilization: I hereby certify that all disturbed areas have achieved final stabilization as defined in the current version of the general permit, and that all temporary, structural erosion and sediment control measures have been removed. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. Printed Name: Title/Position: Signature: I Date: VIII. Qualified Inspector Certification - Post -construction Stormwater Management Practice(s): I hereby certify that all post -construction stormwater management practices have been constructed in conformance with the SWPPP. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. l ir"1 7711. 121Fr73 Title/Position: Signature: IX. Owner or Operator Certification I hereby certify that this document was prepared by me or under my direction or supervision- My determination, based upon my inquiry of the person(s) who managed the construction activity, or those persons directly responsible for gathering the information, is that the information provided in this document is true, accurate and complete. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings - Printed Name: TidelPosition: Signature: I Date: (NYS DEC Notice of Termination - January 2010) Page 3 of 3 Attachment C: Certification Forms CONTRACTOR and SUBCONTRACTOR CERTIFICATION STATEMENT for the New York State Department of Environmental Conservation (DEC) State Pollutant Discharge Elimination System Permit for Stormwater Discharges from Construction Activity (GP-0-20-001) As ner Part III.A.6 on naRe 13 of GP-0-.20-00I (effective January 29. 20101: `Prior to the commencement of construction activity, the owner or operator must identify the contractor(s) and subcontractor(s) that will be responsible for installing, constructing, repairing, replacing, inspecting and maintaining the erosion and sediment control practices included in the SWPPP; and the contractor(s) and subcontractor(s) that will be responsible for constructing the post - construction stormwater management practices included in the SWPPP. The owner or operator shall have each of the contractors and sub -contractors 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 contractor and subcontractor involved in soil disturbance sign a copy of the following certification statement before they commence any construction activity: NYR Nance of Construction Site DEC Permit ID Municipality (MS4) "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 most current version of the New York State Pollutant Discharge Elimination System ("SPDES') general permit for stormwater discharges from construction activities and that it is unlawful far 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 andlor administrative proceedings. Responsible Corporate Officer/Partner Signature Date Name of above Signatory Name of Company Title of above Signatory Mailing Address Telephone of Company City, State and Zip Identify the specific elements of the SWPPP the contractor or subcontractor is responsible for: `TRAINED CONTRACTOR' FUR THE CERTIFIED CONTRACTOR OR SUBCONTRACTOR Name of Trained Employee Title of Trained Employee NYSDEC SWT # A copy of this signed contractor certification statement must be maintained at the SWPPP on site Attachment D: State Historic Preservation Mapping 1/24/23, 9:19 PM Cultural Resource Information System (CRIS) CRTS HOME SUBMIT SEARCH ) COMMUNICATE �uituraI Resource informa'.on System Criteria Spatial Results Building USNs (4) Download Results View Zoom USN Name Status aa 02302.000119 3594 NY 281 Not Eligible 02302.000120 3599 NY 281 Not Eligible aa 02302.000123 3609 NY 281 Not Eligible ❑ ❑ 02302.000121 3600 NY 281 Not Eligible https:Ilcris. parks. ny.gov 111 Attachment E: Environmental Mapping 1 /24/23, 6:00 PM Environmental Resource Mapper 1►1M IUlkrlA►II/J�.►Ill�d*)►la�l4►I�tk�UIMJ►1►'�.�:�'l��R�1► Environmental Resource Mapper Search Tools Layers and Legend Other Wetland Layers Reference Layers ❑U DEC Region ❑ ❑ DEC Lands ❑❑ Adirondack Park Boundary ❑ NY5 Parks 0 Tax Parcels Tell Me More... Need A Permit? Contacts 7 Base Map: I Topographical Latitude: 42.5812 Longitude:-76.2135 Zoom to 1184 (t \,/ � Using this map https:llgisservices.dec.ny.gov/gis/erml 111 Attachment F: Inspection Report (Sample Form) TOWN OF Construction Stormwater Inspection Report for SPDES General Perinit GP-0- 15-002 Project Name and Location: Municipality: -Fame of SPDES Permittee: Phone Number: On -site Representatives) and Company(s): Phone Number(s): SPDES Authoritv Date: I Weather. Permit # (if any): NYRIO County. Entry Time: I Exit Time: Contacted: Yes❑ No ❑ Inspection Type: ❑Camphance Dteferral ❑Complaint ❑NOT Yes No NIA I. ❑ ❑ ❑ Does the project have permit coverage? 2. ❑ ❑ ❑ Is a copy of the NOI and Adrnowledgnent Letter available on site and accessible for viewing? 3. ❑ ❑ ❑ Is a copy of the MS4 SWPPP Acceptance Form available on site and accessible for viewing? 4_ ❑ ❑ ❑ Is an up4o-date copy of the signed SWPPP retained at the construction site? 5. ❑ ❑ ❑ Is a copy of the SPDES General Permit retained at the construction site? 6. ❑ ❑ ❑ Does the NOI accurately report the number of acres to be disturbed? SVVPPP Content Yes No NIA 7. ❑ ❑ ❑ Does the SWPPP describe and identify the erosion and sediment control measures to be employed? & ❑ ❑ ❑ Does the SWPPP provide an inspection schedule and maintenance roquirements for the E&SC measures? 9. ❑ ❑ ❑ Does the SWPPP describe and identify the siormwater management practices to be employed? 10. ❑ ❑ ❑ Does the SWPPP ident ify the contracioil s) and subcontractorm responsible for each measure? I I. ❑ ❑ Does the SWPPP identify at least one trained individual From each contractors) and subcontractor(s) companies 12. ❑ ❑ ❑ Does the SWPPP include a]I tte necessary Contractor Cenif (cation Statements and signatures? I3. ❑ ❑ ❑ Is the SWPPP signed by the permittee? 14.❑ ❑ ❑ Isthe SWPPP prepared by a qualiried professional (if post•construclion stormwaler managcmentrequired)? 15. ❑ ❑ ❑ Do the SMPs conform to the Enhanced Phosphorus Removal Standards (projects in 'IMDL watersheds)? Rrcordkeeolnn Yes No N/A 16. ❑ ❑ ❑ Are self inspections performed as required by the permit (weekly, or twice weekly for >5 acres disturbed)? IT ❑ ❑ ❑ Are the so If. inspections performed by and signed by qualified inspector and retained on site? Ia. ❑ ❑ ❑ Do the qua lired inspector's reports include the minimum reporting requirements? 19, ❑ ❑ ❑ Do inspection reports identify corrective measures that have not been implemented or are retuning? Visual Observatlons Yea No NSA 20.0 ❑ ❑ Are all erosion and sediment control measures installed properly? 21.0 ❑ ❑ Are all erosion and sediment contra measures bei ng maintainedproperly? 22. ❑ ❑ ❑ Was written authorizahon issued for any disturbance greater than 5 acres? 23.❑ ❑ ❑ Have stabilization measures been implemented in inactive areas per Permit (>5 acres) and E&SC Standards? 24.❑ ❑ ❑ Are post -construction stormwater management practices conslructed/installed correctly? 25. ❑ ❑ ❑ Has Final site stabilization been ach ieved and temporary E&SC measures removed prior to NOT submittal? 26. ❑ ❑ ❑ Was there a discharge from the site on the day of inspection? 27. ❑ ❑ ❑ Is there evidence that a discharge caused or contributed to a violation of water quality standards? Page I of 2 Pap 2 of x Water Oualtty Observations Describe the discharge(s): location, source(s), impact on receiving watWs), etc. Describe the qua]ity of the receiving water(s) bath upstream and downstream of the discharge Describe any other water qua]ity standards or permit violations Additional Comments [:]Photographs attached Overall Inspection Rating: ❑Satisfactory ❑Marginal ❑Unsatisfactory Name/Agency or Lead Inspector: Nanies/Agencies or Ulher Inspeclors: ISignature of Lead Inspector; Attachment G: Record of Stabilization and Construction Activity Dates (Sample Form) SITE STABILIZATION and CONSTRUCTION ACTIVITY DATES A record of dates when major grading activities occur, when construction activities temporarily or permanently cease on a portion of the site, and when stabilization measures are initiated shall be maintained until final site stabilization is achieved and the Notice of Termination is filed. The dates can be entered in the following form, or on a different form. MAJOR GRADING ACTIVITIES: Description of Activity: Begin (date): Site Contractor: Location: End (date): Description of Activity: Begin (date): Site Contractor: Location: End (date): Description of Activity: Begin (date): Site Contractor: Location: End (date): Description of Activity: Begin (date): Site Contractor: Location: End (date): Description of Activity: Begin (date): Site Contractor: Location: End (date): Description of Activity: Begin (date): Site Contractor: Location: End (date): Description of Activity: Begin (date): Site Contractor: Location: End (date): Attachment H: Vegetative and Structural Measures For Erosion and Sediment Control (NYS Standards & Specifications for Erosion & Sediment Control) (Reference) STANDARD AND SPECIFICATIONS FOR MULCHING Definition and Scove Applying coarse plant residue or chips, or other suitable materials, to cover the soil surface to provide initial erosion control while a seeding or shrub planting is establishing. Mulch will conserve moisture and modify the surface soil temperature and reduce fluctuation of both. Mulch will prevent soil surface crusting and aid in weed control. Mulch can also be used alone for temporary stabilization in non - growing months. Use of stone as a mulch could be more permanent and should not be limited to non -growing months. Conditions Where Practice AAnlies On soils subject to erosion and on new seedings and shrub plantings. Mulch is useful on soils with low infiltration rates by retarding runoff. Criteria Site preparation prior to mulching requires the installation of necessary erosion control or water management practices and drainage systems. Slope, grade and smooth the site to fit needs of selected mulch products. Remove all undesirable stones and other debris to meet the needs of the anticipated land use and maintenance required. Apply mulch after soil amendments and planting is accomplished or simultaneously if hydroseeding is used. Select appropriate mulch material and application rate or material needs. Hay mulch shall not be used in wetlands or in areas of permanent seeding. Clean straw mulch is preferred alternative in wetland application. Determine local availability. Select appropriate mulch anchoring material. NOTE: The best combination for grass/legume establishment is straw (cereal grain) mulch applied at 2 ton/ acre (90 lbs.11000sq.ft.) and anchored with wood fiber mulch (hydromulch) at 500 — 7501bs.lacre (11 — 17 lbs.11000 sq. ft.). The wood fiber mulch must be applied through a hydroseeder immediately after mulching. New York State Standards and Specifications Page 4.39 November 2016 For Erosion and Sediment Control X u Mulch Material Quality Standards per 1000 Sq. Ft. per Acre Depth of Application Remarks Wood chips or shavings Wood fiber cellulose (partly digested wood fibers) Gravel, Crushed Stone or Slag Air-dried. Free of 500-900 lbs. 10-20 tons objectionable coarse material Made from natural wood 50 lbs. usually with green dye and dispersing agent Washed; Size 2B or 9 cu. yds 3A-1 1/2" 2,000 lbs. 405 cu. yds 2-7" Used primarily around shrub and tree plantings and recreation trails to inhibit weed competition. Resistant to wind blowing. Decomposes slowly. — Apply with hydromulcher. No tie down required. Less erosion control provided than 2 tons of hay or straw. 3" Excellent mulch for short slopes and around plants and ornamentals. Use 2B where subject to traffic. (Approximately 2,000 lbs./cu. yd.). Frequently used over filter fabric for better weed control. Hay or Straw Air-dried; free of 90-100 lbs. 2-3 bales 2 tans (100- cover about 90% Use small grain straw where mulch is undesirable seeds & 120 bales) surface maintained for more than three months. °$ coarse materials Subject to wind blowing unless anchored. Most commonly used mulching material. Provides the best micro -environment for germinating seeds. Jute twisted yarn Undyed, unbleached 48" x 50 yds. or 48" — — Use without additional mulch. Tie down Z plain weave. Warp 78 x 75 yds. as per manufacturers specifications. ends/yd., Weft 41 ends/ Good for center line of concentrated yd. 60-90 lbs./roll water flow. Excelsior wood fiber Interlocking web of 4' x 1115' or 8' x Use without additional mulch. Excellent mats excelsior fibers with 112.5'. for seeding establishment. Anchor as per photodegradable plastic manufacturers specifications. 4 netting Approximately 72 lbs./roll for excelsior with plastic on both sides. Use two sided ❑, plastic for centerline of waterways. a. Straw or coconut Photodegradable plastic Most are 6.5 ft. x 3.5 81 rolls — Designed to tolerate higher velocity water Cfiber, or net on one or two sides ft. flow, centerlines of waterways, 60 sq. combination yds. per roll. [7 n o w 0 a � .r ,n W Table 4.3 Mulch Anchoring Guide Anchoring Method or Material Kind of Mulch to lie Anchored How to Apply After mulching, divide areas into blocks approximately 1 sq. yd. in size. Drive 4-6 pegs per block to within 2" to 3" of soil 1. Peg and Twine Hay or straw surface. Secure mulch to surface by stretching twine between pegs in criss-cross pattern on each block. Secure twine around each peg with 2 or more tight turns. Drive pegs flush with soil. Driving stakes into ground tightens the twine. Staple the light -weight paper, jute, wood fiber, or plastic 2. Mulch nctting Hay or straw nettings to soil surface according to manufacturer's recommendations. Should be biodegradable. Most products are not suitable for foot traffic. Apply with hydroseeder immediately after mulching. Use 500 3. Wood cellulose fiber Hay or straw lbs. wood fiber per acre. Some products contain an adhesive material ("tackifier"), possibly advantageous. Apply mulch and pull a mulch anchoring tool (blunt, straight 4. Mulch anchoring tool Hay or straw discs) over mulch as near to the contour as possible. Mulch material should be "tucked" into soil surface about 3". Mix and apply polymeric and gum tackifiers according to 5. Tackifier Hay or straw manufacturer's instructions. Avoid application during rain.oA 24-hour curing period and a soil temperature higher than 45 Fahrenheit are required. New York State Standards and Specifications Page 4.41 November 2016 For Erosion and Sediment Control STANDARD AND SPECIFICATIONS FOR PERMANENT CONSTRUCTION AREA PLANTING Definition & Scope Establishing permanent grasses with other fortis and/or shrubs to provide a minimum 80% perennial vegetative cover on areas disturbed by construction and critical areas to reduce erosion and sediment transport. Critical areas may include but are not limited to steep excavated cut or fill slopes as well as eroding or denuded natural slopes and areas subject to erosion. Conditions Where Practice Applies This practice applies to all disturbed areas void of, or having insufficient, cover to prevent erosion and sediment transport. See additional standards for special situations such as sand dunes and sand and gravel pits. Criteria All water control measures will be installed as needed prior to final grading and seedbed preparation. Any severely compacted sections will require chiseling or disking to provide an adequate rooting zone, to a minimum depth of 12", see Soil Restoration Standard. The seedbed must be prepared to allow good soil to seed contact, with the soil not too soft and not too compact. Adequate soil moisture must be present to accomplish this. If surface is powder dry or sticky wet, postpone operations until moisture changes to a favorable condition. If seeding is accomplished within 24 hours of final grading, additional scarification is generally not needed, especially on ditch or stream banks. Remove all stones and other debris from the surface that are greater than 4 inches, or that will interfere with future mowing or maintenance. Soil amendments should be incorporated into the upper 2 inches of soil when feasible. 'Me soil should be tested to determine the amounts of amendments needed. Apply ground agricultural limestone to attain a pH of 6.0 in the upper 2 inches of soil. If soil must be fertilized before results of a soil test can be obtained to determine fertilizer needs, apply commercial fertilizer at 600 lbs. per acre of 5-5 -10 or equivalent. If manure is used, apply a quantity to meet the nutrients of the above fertilizer. This requires an appropriate manure analysis prior to applying to the site. Do not use manure on sites to be planted with birdsfoot trefoil or in the path of concentrated water flow. Seed mixtures may vary depending on location within the state and time of seeding. Generally, warm season grasses should only be seeded during early spring, April to May. These grasses are primarily used for vegetating excessively drained sands and gravels. See Standard and Specification for Sand and Gravel Mine Reclamation. Other grasses may be seeded any time of the year when the soil is not frozen and is workable. When legumes such as birdsfoot trefoil are included, spring seeding is preferred. See Table 4.4, "Permanent Construction Area Planting Mixture Recommendations" for additional seed mixtures. General Seed Mix: lbsJ lbs/1000 Variety acre sq. ft. Red Clover' OR Acclaim, Rally, 82 0.20 Red Head II, Renegade Common white cloverl Common 8 0.20 PLUS Creeping Red Fescue I Common I 20 I 0.45 PLUS Smooth Bromegrass Common 2 0.05 OR Ryegrass (perennial) Pennfine/Linn 5 0.10 add inoculant immediately prior to seeding 2 Mix 4 lbs each of Empire and Pardee OR 4 lbs of Birdsfoot and 4 lbs white clover per acre. All seeding rates are given for Pure Live Seed (PLS) Pure Live Seed, or (PLS) refers to the amount of live seed in a lot of bulk seed. Information on the seed bag label includes the type of seed, supplier, test date, source of seed, purity, and germination. Purity is the percentage of pure seed. Germination is the percentage of pure seed that will produce normal plants when planted under favorable conditions. November 2016 Page 4.42 New York State Standards and Specifications For Erosion and Sediment Control To compute Pure Live Seed multiply the "germination percent" times the "purity" and divide that by 100 to get Pure Live Seed. PuwUveSeedMS)_ %Germinatimx%Purity 100 For example, the PLS for a lot of Kentucky Blue grass with 75% purity and 96% germination would be calculated as follows: (96) x (75) _ 72% P= Live SWA 100 For 1 Olbs of PLS from this lot = 10 =119me 0.72 Therefore, 13.9 lbs of seed is the actual weight needed to meet 10lbs PSL from this specific seed lot. Time of Seeding: The optimum timing for the general seed mixture is early spring. Permanent seedings may be made any time of year if properly mulched and adequate moisture is provided. Late June through early August is not a good time to seed, but may facilitate covering the land without additional disturbance if construction is completed. Portions of the seeding may fail due to drought and heat. These areas may need reseeding in late summer/fall or the following spring. Method of seedine: Broadcasting, drilling, cultipack type seeding, or hydroseeding are acceptable methods. Proper soil to seed contact is key to successful seedings. Mulching: Mulching is essential to obtain a uniform stand of seeded plants. Optimum benefits of mulching new seedings are obtained with the use of small grain straw applied at a rate of 2 tons per acre, and anchored with a netting or tackifier. See the Standard and Specifications for Mulching for choices and requirements. Irrigation: Watering may be essential to establish a new seeding when a drought condition occurs shortly after a new seeding emerges. Irrigation is a specialized practice and care must be taken not to exceed the application rate for the soil or subsoil. When disconnecting irrigation pipe, be sure pipes are drained in a safe manor, not creating an erosion concern. 80% Perennial Vegetative Cover 50% Perennial Vegetative Cover New York State Standards and Specifications Page 4.43 November 2016 For Erosion and Sediment Control Table 4.4 Permanent Construction Area Planting Mixture Recommendations Seed Mixture Variety Rate in 1bsJacre Rate in lbs./ (PLS) 1 1, 000 ft Mix #1 Creeping red fescue Ensylva, Pennlawn. Boreal 10 25 Perennial ryegrass Pennfine, Linn 10 .25 *This mix is used extensively for shaded areas. Mix #2 Switchgrass I Shelter, Pathfinder, Trailblazer, or Blackwell I 20 I .50 *This rate is in pure live seed, this would be an excellent choice along the upland edge of a wetland to filter runoff and pro- vide wildlife benefits. In areas where erosion may be a problem, a companion seeding of sand lovegrass should be added to provide quick cover at a rate of 2 lbs. per acre (0.05 lbs. per 1000 sq. ft.). Mix #3 Switchgrass Shelter, Pathfinder, Trailblazer, or Blackwell 4 .I0 Big bluestem Niagara 4 .10 Little bluestem Aldous or Camper 2 .05 Indiangrass Rumsey 4 .10 Coastal panicgrass Atlantic 2 .05 Sideoats grama El Reno or Trailway 2 .05 Wildflower mix .50 .01 *This mix has been successful on sand and gravel plantings. It is very difficult to seed without a warm season grass seeder such as a Truax seed drill. Broadcasting this seed is very difficult due to the fluffy nature of some of the seed, such as bluestems and indiangrass. Mix #4 Switchgrass Shelter, Pathfinder, Trailblazer, or Blackwell 10 .25 Coastal panicgrass Atlantic 10 .25 *This mix is salt tolerant, a good choice along the upland edge of tidal areas and roadsides. Mix #5 Saltmeadow cordgrass (Spartina patens) --This grass is used for tidal shoreline protection and tidal marsh restoration. It is planted by vegetative stem divisions. 'Cape' American beachgrass can be planted for sand dune stabilization above the saltmeadow cordgrass zone. Mix #5 Creeping red fescue Ensylva, Pennlawn, Boreal 20 .45 Chewings Fescue Common 20 .45 Perennial ryegrass Pennfine, Linn 5 .10 Red Clover Common 10 .45 *General purpose erosion control mix. Not to be used for a turf planting or play grounds. November 2015 Page 4.44 New York State Standards and Specifications For Erosion and Sediment Control STANDARD AND SPECIFICATIONS FOR TEMPORARY CONSTRUCTION AREA SEEDING Definition & Seom Providing temporary erosion control protection to disturbed areas and/or localized critical areas for an interim period by covering all bare ground that exists as a result of construction activities or a natural event. Critical areas may include but are not limited to steep excavated cut or fill slopes and any disturbed, denuded natural slopes subject to erosion. Conditions Where Practice Annlies Temporary seedings may be necessary on construction sites to protect an area, or section, where final grading is complete, when preparing for winter work shutdown, or to provide cover when permanent seedings are likely to fail due to mid -summer heat and drought. The intent is to provide temporary protective cover during temporary shutdown of construction and/or while waiting for optimal planting time. Criteria Water management practices must be installed as appropriate for site conditions. The area must be rough graded and slopes physically stable. Large debris and rocks are usually removed. Seedbed must be seeded within 24 hours of disturbance or scarification of the soil surface will be necessary prior to seeding, Fertilizer or lime arc not typically used for temporary seedings. IR Spring or summer or early fall, then seed the area with ryegrass (annual or perennial) at 30 lbs. per acre (Approximately 0.7 lb./1000 sq. ft. or use 1 lb./l000 sq. ft.) IF: Late fall or early winter, then seed Certified `Aroostook' winter rye (cereal rye) at 100 lbs. per acre (2.5 lbs./1000 sq. ft.). Any seeding method may be used that will provide uniform application of seed to the area and result in relatively good soil to seed contact. Mulch the area with hay or straw at 2 tons/acre (approx. 90 lbs./1000 sq. ft, or 2 bales). Quality of hay or straw mulch allowable will be determined based on long term use and visual concerns. Mulch anchoring will be required where wind or areas of concentrated water are of concern. Wood fiber hydromulch or other sprayable products approved for erosion control (nylon web or mesh) may be used if applied according to manufacturers' specification. Caution is advised when using nylon or other synthetic products. They may be difficult to remove prior to final seeding and can be a hazard to young wildlife species. November 2016 Page 4.58 New York State Standards and Specifications For Erosion and Sediment Control STANDARD AND SPECIFICATIONS FOR TOPSOILING Definition & Scope Spreading a specified quality and quantity of topsoil materials on graded or constructed subsoil areas to provide acceptable plant cover growing conditions, thereby reducing erosion; to reduce irrigation water needs; and to reduce the need for nitrogen fertilizer application. Conditions Where Practice Applies Topsoil is applied to subsoils that are droughty (low available moisture for plants), stony, slowly permeable, salty or extremely acid. It is also used to backfill around shrub and tree transplants. This standard does not apply to wetland soils. Design Criteria 1. Preserve existing topsoil in place where possible, thereby reducing the need for added topsoil. 2. Conserve by stockpiling topsoil and friable fine textured subsoils that must be stripped from the excavated site and applied after final grading where vegetation will be established. Topsoil stockpiles must be stabilized. Stockpile surfaces can be stabilized by vegetation, geotextile or plastic covers. This can be aided by orientating the stockpile lengthwise into prevailing winds. Site Preparation 1. As needed, install erosion and sediment control practices such as diversions, channels, sediment traps, and stabilizing measures, or maintain if already installed. 2. Complete rough grading and final grade, allowing for depth of topsoil to be added. 3. Scarify all compact, slowly permeable, medium and fine textured subsoil areas. Scarify at approximately right angles to the slope direction in soil areas that are steeper than 5 percent. Areas that have been overly compacted shall be decompacted in accordance with the Soil Restoration Standard. 4. Remove refuse, woody plant parts, stones over 3 inches in diameter, and other litter. Topsoil Materials 1. Topsoil shall have at least 6 percent by weight of fine textured stable organic material, and no greater than 20 percent. Muck soil shall not be considered topsoil. 2. Topsoil shall have not less than 20 percent fine textured material (passing the NO. 200 sieve) and not more than 15 percent clay. 3. Topsoil treated with soil sterilants or herbicides shall be so identified to the purchaser. 4. Topsoil shall be relatively free of stones over 1 112 inches in diameter, trash, noxious weeds such as nut sedge and quackgrass, and will have less than 10 percent gravel. 5. Topsoil containing soluble salts greater than 500 parts per million shall not be used. 6. Topsoil may be manufactured as a mixture of a mineral component and organic material such as compost. Application and Grading 1. Topsoil shall be distributed to a uniform depth over the area. It shall not be placed when it is partly frozen, muddy, or on frozen slopes or over ice, snow, or standing water puddles. 2. Topsoil placed and graded on slopes steeper than 5 3. Rcfcr to USDA Natural Resource Conservation Service percent shall be promptly fertilized, seeded, mulched, soil surveys or soil interpretation record sheets for and stabilized by "tracking" with suitable equipment. further soil texture information for selecting appropriate design topsoil depths. 3. Apply topsoil in the amounts shown in Table 4.7 below: New York State Standards and Specifications Page 4.59 November 2016 For Erosion and Sediment Control Table 4.7 - Topsoil Application Depth Minimum Site Conditions Intended Use Topsoil Depth 1. Deep sand or Mowed lawn 6 in. loamy sand Tall legumes, unmowed 2 in. 2. Deep sandy loam 3. Six inches or more: silt loam, clay loam, loam, or silt November 2016 Tall grass, unmowed Mowed lawn Tall legumes, unmowed Tall grass, un-mowed Mowed lawn Tall legumes, unmowed Tall grass, unmowed 1 in. 5 in. 2 in. none 4 in. 1 in. 1 in. Page 4.60 New York State Standards and Specifications For Erosion and Sediment Control STRUCTURAL MEASURES FOR EROSION AND SEDIMENT CONTROL General Uncontrolled runoff and excess erosion often occurs in urban developments, particularly during the construction stage. This erosion forms rills and gullies; washes out roads; scours cut and fill areas; fills road ditches, storm drains, and streams; and does other damage that is costly to the developers and damaging to land and water users below. Careful inclusion of proven conservation practices in the development plan can prevent or alleviate much of this damage and should be a part of every development plan. These practices will usually be a combination of vegetative and structural measures. They may be temporary and serve only during the construction stage or they may be permanent in nature and become a part of the completed development. Permanent structural practices should be installed as early as possible in the construction stage. This section deals with the more common structural measures that may be used. Adequate designs, plans, and specification should be prepared for the measures to be used. A number of measures and specifications are included throughout this section, The designer shall determine those elements to be installed to control erosion (Section 2) and follow the criteria included in these standards and specifications. Introduction Structural erosion and sediment control practices have been classified as either temporary or permanent, according to how they are used. Temporary structural practices are used during construction to prevent offsite sedimentation. The length of time that temporary practices are functional varies from project to project, since the sediment control strategy may change as construction activity progresses. Permanent structural practices are used to convey surface water runoff to a safe outlet. Permanent structural practices will remain in place and continue to function after the completion of construction. Regardless of whether the practices are temporary or permanent, runoff control measures should be the first items constructed when grading begins, and be completely functional before downslope land disturbance takes place. Earthen structures such as diversions, dikes, and swales should be stabilized before being considered functional. Only after the runoff control structures are operational and sediment control measures are in place, should clearing and grading on the rest of the construction site begin. While clearing and grading the site, it is important to minimize the amount of sediment that is produced. in general, it is advantageous to clear only as much area as is necessary to accommodate construction needs. Grade and stabilize large sites in stages whenever possible. Limiting the amount of disturbed area limits the amount of sediment that is generated, thus decreasing the amount of maintenance required on sediment control measures. Sediment generated during the construction of cut and fill slopes can also be minimized through design and grading techniques. When designing either a cut or fill slope, factors to consider include slope length and steepness, soil type, and upslope drainage area. In general, it is important to leave soil surfaces on disturbed slopes in a roughened condition and to construct a water diversion practice at the top of slopes. Rough soil surfaces do not erode as readily as smooth soil surfaces. Although design and grading techniques can reduce soil erosion, they cannot eliminate it entirely. Therefore, practices must be installed to prevent offsite sedimentation. Even though the specific conditions of each site determine what measures are necessary to control erosion and sedimentation, some general principles apply to the selection and placement of sediment control measures. 1. Prevent clean water from becoming turbid, by diverting runoff from upslope areas away from disturbed areas. Earth dikes, temporary swales, perimeter dike/swales, or diversions that outlet in stable areas can be used in this capacity. 2. Remove sediment from turbid water before the water leaves the site. The method of sediment removal depends upon how the water drains from the site. Concentrated flow must be diverted to a trapping device so that suspended sediment can be deposited. Dikes or swales that outlet into traps or basins can accomplish this. A storm drain system may be used to convey concentrated sediment laden water only if the system empties into a trap or basin. Otherwise, all storm drain inlets must be protected so that sediment laden water cannot enter the drainage system before being treated to remove the sediment. 3. Surface runoff draining in sheet flow must be controlled and treated before the water leaves the site. Straw bale dikes, silt fences, or vegetative buffer strips can be used to treat sheet flow. August 2005 Page 5.1 New York Standards and Specifications For Erosion and Sediment Control All practices designed and implemented must be properly maintained in order to remain functional. Sediment accumulated in basins and traps must be removed and disposed of in a manner that stabilizes them on the construction site. Other factors should be observed during construction in order to make erosion and sediment control measures more effective in pollution control. These are: 1. Sprinkle or apply dust suppressors. Keep dust down to a tolerable limit on construction sites and haul roads. 2. Use temporary bridges or culverts where fording of streams is objectionable. Avoid borrow areas where pollution from this operation is inevitable. 3. Protect streams from chemicals, fuel, lubricants, sewage, or other pollutants. 4. Avoid disposal of fill in floodplains or drainage ways. This reduces the capacity of these areas to pass flood flows. 5. Do not locate sanitary facilities over, or adjacent to, waterways, wells, or springs. 6. Locate storage yards and stockpiles where erosion and sediment hazards are slight. Where this is not possible, apply necessary erosion control practices. New York Standards and Specifications Page 5.2 August 2005 For Erosion and Sediment Control STANDARD SYMBOLS BRANCH PACKING BP BRUSH LAYER BL BRUSH MATTRESS BM CHECK DAM — — CONSTRUCTION ROAD STABILIZATI❑N = CRS CURB DROP INLET PRDTECTIDN LIIId� DIVERSION D DUNE STABILIZATI❑N D5 DUST CONTROL EARTH DIKE ►=z�8--�,y EXCAVATED DROP INLET PROTECTI❑N FIBER ROLL FR FILTER FABRIC DROP INLET PROTECTION � f GRADE STABILIZATI❑N STRUCTURE I GRASSED WATERWAY GL ADAPTED FROM DETAILS PROVIDED BY, USDA - NRCS, NEW YORK STATE DEPARTMENT of TRANSPORTATION, STANDARD SYMBOLS NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION NEW YORK STATE SOIL L WATER CONSERVATION COMMITTEE August 2005 Page 53 New York Standards and Specifications For Erosion and Sediment Control STANDARD SYMBOLS (cont' d) LAND GRADING "= LEVEL SPREADER III' LINED WATERWAY RR 0 LIVE CRIHWALL LC LIVE CUTTINGSILIVE STAKES PLANTING LCLS LIVE FASCINE LE MULCHING OPTIONAL SEDIMENT TRAP DEWATERING DEVICE PAVED FLUME PERIMETER DIKE OR SWALE PD PERMANENT SEEDING PS PIPE OUTLET SEDIMENT TRAP 0 WENOW PIPE SLOPE DRAIN FLEXIBLE =� P S D PORTABLE SEDIMENT TANK PR❑TECTING VEGETATI❑N ADAPTED FROM DETAILS PROVIDED BY, USDA — NRCS. NEW YORK STATE DEPARTMENT OF TRANSPORTATION, STANDARD SYMBOLS NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION, NEW YORK STATE SOIL & WATER CONSERVATION COMMITTEE New York Standards and Specifications Page 5.4 August 2005 For Erosion and Sediment Control STANDARD SYMBOLS (cant' d) RECREATION AREA IMPROVEMENT RAI RIP RAP OUTLET PROTECTION RIP RAP SLOPE PROTECTION R� RIP RAP STREAMBANK PROTECTION RUCK DAM f 1 SEDIMENT BASIN SEDIMENT TRAP SEGMENTED RETAINING WALL SILT FENCE S❑DDING STABILIZED CONSTRUCTION ENTRANCE M-0 ST❑NE & BL❑CK DR❑P INLET PR❑TECTI❑N STRUCTURE STRAW BALE DIKE SUBSURFACE DRAIN SD SUMP PIT T ADAPTED FROM DETAILS PROVIDED RY+ USDA - NRCSr NEW YORK STATE OFNEW YORK STATE DEPARTMENT DEPARTMENTOF EN IRONMENTALORCONTATERVATION, STANDARD S Y M]BO L S NEW YORK STATE SOIL r. WATER CONSERVATION COMMITTEE August 2005 Page 5.5 New York Standards and Specifications For Erosion and Sediment Control STANDARD SYMBOLS (cont'd) SURFACE ROUGHENING TEMPORARY SEEDING CD A-2 B-3 TEMPORARY SWALE TOPSOILING TREE REVETMENT TR TURBIDITY CURTAIN VEGETATED ROCK GABI❑NS V RG WATER BAR -W B --� WATERWAY CROSSING :=)T�-- ADAPTED FROM DETAILS PROVIDED BY1 USDA — NRCS, NEW YORK STATE DEPARTKENT OF TRANSPORTATION+ � T AN � A R I7 SYMBOLS NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION, NEW YORK STATE SOIL & WATER CONSERVATION COMMITTEE New York Standards and Specifications Page 5.6 August 2005 For Erosion and Sediment Control Attachment I: NYSDEC Stormwater Construction Checklists (Sample Form) New York State Stormwater Management Design Manual Appendix F Infiltration Basin Construction Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: CONSTRUCTION SEQUENCE I SATISFACTORY/ I COMMENTS UNSATISFACTORY 1. Pre -Construction Runoff diverted Soil permeability tested Groundwater / bedrock depth 2. Excavation Size and location Side slopes stable Excavation does not compact subsoils 3. Embankment Barrel Anti -seep collar or Filter diaphragm Fill material F-12 New York State Stormwater Management Design Manual Appendix F CONSTRUCTION SEQUENCE I SATISFACTORY I COMMENTS UNSATISFACTORY 4. Final Excavation Drainage area stabilized Sediment removed from facility Basin floor tilled Facility stabilized 5. Final Inspection Pretreatment facility in place Inlets / outlets Contributing watershed stabilized before flow is routed to the factility Comments: Actions to be Taken: F-13 New York State Stormwater Management Design Manual Appendix F Open Channel System Construction Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: CONSTRUCTION SEQUENCE SATISFACTORY I COMMENTS UNSATISFACTORY 1. Pre -Construction Pre -construction meeting Runoff diverted Facility location staked out 2. Excavation Size and location Side slope stable Soil permeability Groundwater J bedrock Lateral slopes completely level Longitudinal slopes within design range Excavation does not compact subsoils 3. Check dams Dimensions Spacing Materials F-20 New York State Stormwater Management Design Manual Appendix F CONSTRUCTION SEQUENCE I SATISFACTORY I I COMMENTS UNSATISFACTORY 4. Structural Components Underdrain installed correctly Inflow installed correctly Pretreatment devices installed 5. Vegetation Complies with planting specifications Topsoil adequate in composition and placement Adequate erosion control measures in place B. Final inspection Dimensions Check dams Proper outlet Effective stand of vegetation and stabilization Contributing watershed stabilized before flow is routed to the Tactility Comments: F-21 New York State Stormwater Management Design Manual Appendix F Actions to be Taken: F-22 Attachment J: NYSDEC Operation & Maintenance Checklist (Sample Farm) New York State Stormwater Management Design Manual Appendix G Open Channel Operation, Maintenance, and Management Inspection Checklist Project: Location: Site Status: Date: Time: Inspector: MAINTENANCE ITEM SATISFACTORY/ COMMENTS UNSATISFACTORY t. 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 G-13 New York State Stormwater Management Design Manual Appendix G MAINTENANCE ITEM SATISFACTORY/ I COMMENTS UNSATISFACTORY 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: G-14 Attachment K: Stormwater Management Summary Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page I of 10 Town of Cordandville, Cortland County INDEX Stormwater Management Summary SiteDate — General..............................................................................................................2 Runoff Reduction Volume Management Strategy — DP-P..................................................4 Design Point I Summary (DP-1).........................................................................................6 Methodology.................................................................................................8 DesignModeling Results.....................................................................................................9 StageStorage Tables..........................................................................................................10 Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 2 of 10 Town of Cordandville, Cortland County STORMWATER MANAGEMENT SUMMARY SITE DATA - GENERAL Site Notes: This summary is for the proposed construction of a 8,700-SF commercial automotive service and sales building, associated asphalt parking areas and drive lanes, and landscaping within a drainage area of 120,294-SF (2.76-AC). The project will disturb roughly 89,006-SF (2.04-AC) of former brushy gravel, a former car sales building that will be demolished, woods, and grass. The existing building and associated parking area located just to the west of the proposed development drains toward State Highway Route 281 into existing catch basins. Contouring from this area slopes away from any planned construction and will not be included in the drainage analysis of this project. Overall, there will be 43,560-SF (1.00-AC) of new impervious cover added to the site yielding a total of 36% over the future developed area. Existing Subcatchment Evaluation: There is one (1) existing pre -developed drainage subcatchment (ESC-1) for this site totaling 120,294-SF (2.76-AC). The property consists of an empty gravel lot used for automobile parking overflow. An existing commercial building and associated asphalt parking within the same tax parcel lies to the west, outside of the drainage area. The building will be demolished to make way for the future project. Grading flows in a north easterly direction over gentle slopes of c2% where it is collected in a natural swale just off -site. This outlets into the McLean Road drainage system and eventually into Otter Creek (designated as Design Point Existing on Hydraulic and Hydrologic worksheet C-108). Proposed Subcatchment Evaluation: There is one (1) proposed drainage subcatchment (PSC-1) that will be impacted by construction. Soil disturbances caused by project work and the permanent addition of impervious surfaces contribute to increases in runoff rates and volume as compared to existing conditions. As such, some form of water quality treatment and quantity control will be necessary to meet DEC runoff requirements. PSC-1 is essentially of the same size and shape as that of ESC-1 described earlier. The exception is a small 0.68-AC area from the south that will be captured by a new 2'D x 8'W grassed diversion swale to ensure that off -site runoff (OSC-1) does not impact the proposed development or its treatment practices. The swale will outlet into the same channel just past the project watershed. The proposed development will consist of a new 8,700-SF retail and service building, and associated asphalt parking lot. Strategic grading will direct sheet runoff toward the east into a piped stormwater catch basin and collection system. This will outlet into an engineered forebay "sump" designed to treat 100% of the water quality volume before it enters an infiltration basin. The basin has been designed to treat any remaining water Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 3 of 10 Town of Cordandville, Cortland County quality volume and provide quantity attenuation for the 10 yr and 100 yr storms to less than existing conditions. Site Control Methods: This project follows DEC design standards on runoff reduction by applying green infrastructure techniques and standard stormwater management practices to provide source control for impervious surfaces. The site incorporates a single engineered infiltration based structure to meet water quality and quantity needs. As this practice depends on infiltration performance, the Owner will be required to conduct an infiltration test in accordance with The New York State Design Manual, Appendix D to confirm literature rates. Modeling for this project assumed 5"Ihr as reported by the USDA Web Soil Survey. Site Soils: The predominant soil type throughout the site is 125A and 125B Howard gravely loams in the hydrologic soil group A. According to the USDA Soil Conservation Service, Howard soils characteristically have a moderately high to high permeability rate from 0.6 — G"Ihr lending them well to infiltration based practices. Site Topography: The site as a whole has a gentle slope of 1 - 2.0% primarily moving downhill from southwest to northeast. Site Watershed: Of the 2.76-acre watershed, the area of disturbance will be approximately 2.04-AC. The development will occur in a single phase. Rainfall: Rainfall data used in the modeling and analysis was taken from Technical Paper No. 40, Rainfall Frequency Atlas of the U.S. Weather Bureau, published by the U.S. Department of Agriculture. Rainfall data specific to Cortland County under consideration, for various 24-hour storm events tabled below: RAINFALL DATA STORM I 24-HOUR RAINFALL 1-year 1.98 inches 10-year 3.37 inches 100-year 5.67 inches These values were used in modeling for the evaluation of existing and proposed Stormwater run-off conditions. Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 4 of 10 Town of Cortlandville, Cortland County RUNOFF REDUCTION VOLUME MANAGEMENT STRATEGY DESIGN POINT PROPOSED RUNOFF REDUCTION VOLUME MANAGEMENT STRATEGY (See Appendix 1 for Worksheet Analyses) 1. Water Quality Volume and Runoff Reduction Stormwater Management Strate2v - Reference modeling results and WQvIRRv worksheets which fallow this summary: The total site water quality volume is: WQv = 3,646-SF cu-ft (0.084af) Of this amount, there were no opportunities for credits. One infiltration basin has been proposed to reduce the overall water quality volume to 100%: WQv credit = 0.00 cuft (0.000 af) Adjusted WQv = 3,646 tuft (0.084 af) The minimum RRv was based on the following calculation: Soil group for site: A — 2.09-AC S = 55% Minimum RRv: S=0.55 Impervious Area = 0.89-AC Precipitation = 1.0 in Rv = 0.95 Minimum Rv = [(P)(Rv)(A)] 112 = ((1.0 * 4.95"IAC * L0"C)II2)0.55 = 1,897 tuft ❑r, 0.044-acft 2. Water Quality Volume Treatment Practices Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 5 of 10 Town of Cordandville, Cortland County An infiltration basin has been designed to the minimum total volume specifications as calculated in the attached practice worksheets. A summary of total runoff reduction volumes is provided in the table below: Subcatchment Reauired RRv (tuft) RRv Adiust. (Cuft) Practice PSC-1 3,646 3,646 IB 3. Total of RRv Total RRv provided by practices 3,646 tuft (0.084-AF) Total Remaining Storage Volume for practices (after RRv) 3,646 tuft - 3,646 tuft = Ocuft (O.00Oaf) Is provided RRv > adjusted WQv from #1? 0.084 acft > 0.084 acft YES Is provided RRv > minimum RRv for A soils from # 1 ? 0.084 acft > 0.044 acft YES Is volume available within standard practices for remaining untreated WQv? NA There is no remaining Water Quality Volume after runoff reduction volume. All WQv is captured within the forebay. Is all of the watershed drainage area treated by either area reduction or source control practices? YES Is all of the watershed impervious area treated with either reduction or source control practices? YES Minimum runoff reduction requirements are met for this project. Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 6 of 10 Town of Cordandville, Cortland County Design Point Pr000sed Summary (DP-P) Channel Protection (Cpv) Default Criterion: Cpv = 24 hour extended detention of post -developed 1-year, 24-hour Storm event (1.98-inch rainfall Cortland County) after runoff reduction (RRv). 1 yr Cpv 0.224-AF = 9,757-CF. 1 yr Cpv 0.224-AF — RRv 0.084AF = 0.156AF (6,795- CF). The Cpv Channel Protection Volume is provided by the infiltration forebay and within the storage area of the infiltration basin between the bottom of the practice and the primary overflow at 2.5'. The combined available storage volume between both practices is as follows: Forebay storage volume — 4,365-CF Infiltration Basin storage volume — 7,383-CF Total CPv provided by practices=11,748-CF (0.259-AF) CPv is met for the Design Point ❑verbank Flood (Una — DPI Qp = Controls the peak discharge from the 10-year storm (3.37-inch rainfall Cortland County) to 10-year predevelopment rates. Pre -developed max rate = 7.23-CFS, Total Volume = 0.478AF (20,822-CF). Post -developed w/o controls max rate = 8.99-CFS, Total Volume = 0.485 -AF (21,127-CF). The maximum post -developed run-off rate with the infiltration basin in -line is 0.72-CFS, and the total run-off volume is 0.044- AF (1,915-CF). The Qp Overbank Flood control criterion is met with the controls as designed. Extreme Storm (Of) — DP1 Control the peak discharge from the 100-year storm (5.57-inch rainfall Cortland County) to 100-year predevelopment rates. Safely pass the 100-year storm event. Pre -developed max run-off rate = 13.88-CFS, Total Volume = 0.950-AF (41,382-CF). Post -developed w/o controls max rate = 16.74-CFS, Total Volume = 0.932-AF (40,598- CF). The infiltration basin was sized to attenuate the run-off from the post -developed 100-year storm event to that of less than or equal to pre -developed 100 year storm event. Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 7 of 10 Town of Cordandville, Cortland County The maximum post -developed run-off rate with the controls inline is 12.74-CFS, and the total run-off volume is 0.330-AF (14,374-CF). The Qf Extreme Storm control criterion is met with the infiltration basin in -line as designed. Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 8 of 10 Town of Cordandville, Cortland County METHODOLOGY The methodology used for the hydrologic and hydraulic analysis was obtained from the United States Department of Agriculture (USDA) Soil Conservation Service's (SCS) Technical Release No. 20, as implemented by the application program HydroCAD. HydroCAD, developed by Applied Microcomputer Systems of Chocorua, New Hampshire, is a Computer -Aided -Design (CAD) program for analyzing the hydrologic and hydraulic characteristics of a given watershed and associated stormwater management facilities. It utilizes the latest modeling techniques to predict the consequences of any given storm. HydroCAD has the capability of computing hydrographs and routing flows through pipes, streams and ponds. Hydrographs represent discharge rates characteristic of specified watershed conditions, precipitation and geologic factors. For this analysis, the watershed and drainage system was broken down into a network consisting of three types of components described below: Subcatchment: A relatively homogeneous area of land, which produces a volume and rate of surface run-off unique to that area. Reach: Uniform streams, channels or pipes which convey stormwater from one distinct point to another reach or pond. Pond: Natural or man-made impoundment (le. pond), which temporarily stores stormwater run-off and empties in a manner determined by its geometry and the hydraulic structure located at its outlets). Subcatchments, reaches and ponds are represented by hexagons, squares and triangles, respectively, on the watershed routing diagrams provided with the computations reference modeling results attached. Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 9 of 10 Town of Cordandville, Cortland County DESIGN MODELING RESULTS DP-1 Modeling Results Tabled: EXISTING EXISTING FLOW CONDITIONS A T DESIGN POINT (DPI) STORMEVENT PEAK FLOW I TOTAL VOLUME 1-year 3.30 0.214 10-year 7.23 0.478 100-year 13.88 0.950 PROPOSED WITHOUT STORM WATER MANAGEMENT FLOW CONDITIONS AT DESIGN POINT (DPI STORM EVENT PEAK FLOW TOTAL VOL UME 1-year 4.51 0.233 10year 8.99 0.485 100-vear 1674 0,932 PROPOSED WITH BIORETENTION AREAS AND PONDS IN -LINE PROPOSED FLOW CONDITIONS AT DESIGN POINT D I STORM EVENT I PEAK FLOW I TOTAL VOLUME 1-year 0.11 0.010 10-year 0.72 0.044 100-year 12.74 0.330 The run-off rates decrease for the 10 yr and 100 yr storm events as required. Stormwater Management Summary February 2023 Proposed Malchek Car Lot Page 10 of 10 Town of Cordandville, Cortland County STAGE STORAGE TABLES INFILTRATION BASIN STAGE -STORAGE TABLE IB STORM EVENT PEAK PEAK DEPTH STORAGE WQv 3,646 1.45 ' 1 year (Cps) 352 0.17' 10 year 5,919 2.12 ' 100 year 9,762 3.05 ' Notes: Invert of Infiltration Basin = El. 0' Invert Qf Outlet (10' x 4' Broadcrested Weir) El. = 2.50' Top of Basin Crest Elev. El. = 3.50' APPENDIX 1 WATER QUALITY VOLUME/RUNOFF REDUCTION WORKSHEETS Version 1.8 Total Water Quality Volume Calculation Last Updated: 11/09/2015 WQv(acre-feet) = [(P)(Rv)(A)] /12 Is this project subject to Chapter 10 of the NYS Design Manual (i.e. WQv is equal to post - development 1 year runoff volume)?. .... ......................... ................................. .......... No Design Point: 1 Manually enter P, Total Area and Impervious Cover. P= 1.00 inch Breakdown of Subcatchments Catchment Total Area JRv Impervious Area Percent 17�v Number (Acres) Impervious Description (Acres) 1 2.09 1.00 48% 0.48 3,646 PSC-1; IB 1 2 3 4 5 6 7 8 9 10 Subtotal (1-30) 2.09 1.00 48% 0.48 3,646 Subtotal 1 Total 2.09 1.00 48% 0.48 3,646 Initial WQv Identify Runoff Reduction Techniques By Area Total Contributing Technique Contributing Impervious Area Notes Area (Acre) (Acre) lConservation of Natural Areas (Riparian Buffers Filter Strips (Tree Planting (Total 0.00 0.00 minimum 10,000 sf maximum contributing length 75 feet to 0.00 0.00 150 feet 0.00 0.00 Up to 100 sf directly connected impervious 0.00 0.00 area may be subtracted per tree 0.00 0.00 Recalculate WQv after application of Area Reduction Techniques Total Area impervious Area Percent Runoff (Acres) {Arrest Impervious Coefficient % Rv "<<Initial WQv" 2.09 1.00 48% 0.48 I Su btract Area WQv adjusted after Area Reductions Disconnection of Rooftops Adjusted WQv after Area Reduction and Rooftop Disconnect 0.00 0.00 WQv (ft3) 3,646 2.09 1.00 48% 0.48 3,646 0.00 2.09 1.00 48% 0.48 3,646 Catchment 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Total Water Quality Volume Calculation WQv(acre-feet) = [(P)(Rv)(A)] /12 All Subcatchments Total Area Impervious Percent Runoff Cover Impervious Coefficient (Acres) (Acres) % Rv 2.09 1.00 0.48 0.48 WQv Description (ft 3 ) 3646.34 PSC-1; IB 1 Runoff Reduction Techiques/5tandard SMPS Conservation of Natural Areas RR-1 SheetfIow to Riparian Buffers/Filter RR-2 Strips Tree Planting/Tree Pit RR-3 Disconnection of Rooftop Runoff RR-4 Vegetated Swale RR-5 Rain Garden RR-5 Stormwater Planter RR-7 Rain Barrel/Cistern RR-8 Porous Pavement RR-9 Green Roof (Intensive & Extensive) RR-10 Infiltration Trench 1-1 Infiltration Basin 1-2 Dry Well 1-3 Underground Infiltration System 1-4 Bioretention & Infiltration Bioretention F-5 Dry swale 0-1 Micropool Extended Detention (P-1) P-1 Wet Pond (P-2) P-2 Wet Extended Detention (P-3) P-3 Multiple Pond system (P-4) P-4 Pocket Pond (p-5) P-5 Surface Sand filter (F-1) F-1 Underground Sand filter (F-2) F-2 Perimeter Sand Filter (F-3) F-3 Organic Filter (F-4 F-4 Shallow Wetland (W-1) W-1 Extended Detention Wetland (W-2 W-2 Pond/Wetland System (W-3) W-3 Pocket Wetland (W-4) W-4 Wet Swale (0-2) 0-2 Totals by Area Reduction 4 Totals by Volume Reduction --> Totals by Standard SMP w/RRV 4 Totals by Standard SMP -> Tota I Tota I Contributing ontributing Impervious Area Area (acres) (acres) 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.09 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2.09 1.00 0.00 0.00 WQV WQV Reduced Treated (RRv) cf cf 0 0 0 0 n Minimum RRv Enter the Sails Data for the site Soil Group Acres 5 A 2.09 55% B 40% C 30% D 20% Total Area 2.09 Calculate the Minimum RRv I S = 0.55 Impervious = 1.00 Acre Precipitation 1 in RW 0.95 Minimum RRv 1,897 ft3 ❑.04 laf Infiltration Basin Worksheet Point: Enter Site Data For Drainage Area to be Treated by Practice Catchment Total Area impervious Percent WQv Precipitation Number (Acres) a ea] Impervious Rv {ft3� (in) ❑escription ( 1 2.09 1.00 0.48 0.48 3646.34 1.00 PSC-1, I B 1 5111 C❑ Reduced by Disconnection of 489'0 0.48 3,646 ¢WQv after adjusting for Disconnected Rooftops MR" C PVI u V I I VI Ll1C VV I,.(V JU tt:!U IVF pll P1 S`t..0 I.CJ routed to this practice. ft3 Pretreatment Techniques to Prevent Clogging Infiltration Rate 5.00 in/hour Okay 25% minimum; Pretreatment Sizing 100 % WQv 50% if >2 in/hr 100% if Sin/hour Pretreatment Required Volume 1 3,646 I ft3 Pretreatment Provided 2,254 ft 3 Inadequate Pretreatment Provided Sedimentation Basin Pretreatment Techniques utilized Size An Infiltration Basin Design Volume 3,646 ft 3 WQv Basal Area Infiltration practices shall be designed to exfiltrate the entire WQv Required 1,215 f tz through the floor of each practice. Basal Area 1,500 ft 2 Provided Design Depth 3.00 ft Volume Storage Volume provided in infiltration basin area {not including 4,500 ft' Provided pretreatment. Determine Runoff Reduction 3 90% of the storage provided in the basin or WQv whichever is RRv 3,646 ft smaller Volume 0 ft 3 This is the portion of the WQv that is not reduced/infiltrated Treated The infiltration basin must provide storage equal to or greater than Sizing d �K the WQv of the contributing area. APPENDIX 2 HYDRAULIC MODELING DATA ESG9 Existing Subcatchment FPE Design Point Existing �g Infiltration Basin FB PSC-1 Forebay Proposed 5ubcatchment Off -Site Subcachment 1 MMA Point Proposed Subcat Reach Aon Link Routing Diagram for Malchek Prepared by {enter your company name here}, Printed 2/24/2023 I HydroCADS 10.00-21 s/n 01939 0 2018 HydroCAD Software Solutions LLC Malchek - 1 Yr Rain Event Malchek Prepared by {enter your company name here} HydroCAD® 19.90-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 9.393 39 >75% Grass cover, Good, HSG A (ESC-1, ❑SC-1, PSC-1) 1921 95 Gravel surface, HSG A (ESC-1, OSC-1, PSC-1) 9.892 98 Parking and Rooftop, HSG A (PSC-1) 9.317 30 Woods, Good, HSG A (ESC-1, OSC-1) 5.523 88 TOTAL AREA Printed 2/24/2023 Pacie 2 Malchek - 1 Yr Rain Event Malchek Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 3 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.393 0.000 0.000 0.000 0.000 0.393 >75% Grass cover, Good ESC-1, OSC-1, PSC-1 3.921 0.000 0.000 0.000 0.000 3.921 Gravel surface ESC-1, OSC-1, PSC-1 0.892 0.000 0.000 0.000 0.000 0.892 Parking and Rooftop PSC-1 0.317 0.000 0.000 0.000 0.000 0.317 Woods, Good ESC-1, OSC-1 5.523 0.000 0.000 0.000 0.000 5.523 TOTAL AREA Malchek - 1 Yr Rain Event Malchek Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 4 Pipe Listing (all nodes) Line# Node In -Invert Out -Invert Length Slope n Diam/Width Height Inside -Pill Number (feet) (feet) (feet) (ftlft) (inches) (inches) (inches) 1 PSC-1 0.00 0.00 227.0 0.0040 0.013 8.0 0.0 0.0 Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Pacie 5 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmentESC-1: Existing Runoff Area=120,294 sf 0.00% Impervious Runoff Depth>0.93" Flow Length=605' Tc=17.8 min CN=89 Runoff=3.30 cfs 0.214 of SubcatchmentOSC-1: Off -Site Runoff Area=29,462 sf 0.00% Impervious Runoff Depth >0.18" Flow Length=331' Tc=14.0 min CN=69 Runoff=0.11 cfs 0.010 of SubcatchmentPSC-1: Proposed Runoff Area=90,844 sf 42.79% Impervious Runoff Depth>1.29" Flow Length=360' Tc=8.5 min CN=94 Runoff=4.47 cfs 0.224 of Reach DPE: Design Point Existing Inflow=3.30 cfs 0.214 of Outflow=3.30 cfs 0.214 of Reach DPP: Design Point Proposed Inflow=0.11 cfs 0.010 of Outflow=0.11 cfs 0.010 of Pond FB: Forebay Peak Elev=1,175.13' Storage=4,599 cf Inflow=4.47 cfs 0.224 of Discarded=0.29 cfs 0.173 of Primary=0.87 cfs 0.020 of Outflow=1.09 cfs 0.193 of Pond IB: Infiltration Basin Peak Elev=1,172.17' Storage=352 cf Inflow=0.87 cfs 0.020 of ❑iscarded=0.29 cfs 0.020 of Primary=0.00 cfs 0.000 of Outflow=0.29 cfs 0.020 of Total Runoff Area = 5.523 ac Runoff Volume = 0.447 of Average Runoff Depth = 0.97" 83.84% Pervious = 4.631 ac 16.16% Impervious = 0.892 ac Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment ESC-1: Existing Subcatchment 1 Runoff = 3.30 cfs @ 12.10 hrs, Volume= 0.214 af, Depths 0.93" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=1.98" Area (sf) CN Description 6,910 30 Woods, Good, HSG A 5,930 39 >75% Grass cover, Good, HSG A 107,454 96 Gravel surface, HSG A 120,294 89 Weighted Average 120,294 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) [cfs] 7.2 63 0.0210 0.15 Sheet Flow, First 100' Flowpath Grass: Short n= 0.150 P2= 2.70" 5.9 40 0.1000 0.11 Sheet Flow, Balance of First 100' Flowpath Woods: Light underbrush n= 0.400 P2= 2.70" 4.7 502 0.0120 1.76 Shallow Concentrated Flow, Balance of Longest Flowpath Unpaved Kv= 16.1 fps 17.8 605 Total Subcatchment ESC-1: Existing Subcatchment 1 Hydrograph 3- 2- V 3 0 LL 0 4 5 Type II 24-hr Rainfall=1.98" Runoff Area=120,294 sf Runoff Volume=0.214 of Runoff Depth>0.93" Flow Length=605' Tc=17.8 min CN=89 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — Runoff Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment OSC-1: Off -Site Subcachment 1 Runoff = 0.11 cfs @ 12.11 hrs, Volume= 0.010 af, Depths 0.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=1.98" Area (sf) CN Description 6,910 30 Woods, Good, HSG A 5,930 39 >75% Grass cover, Good, HSG A 16,622 96 Gravel surface, HSG A 29,462 69 Weighted Average 29,462 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) [cfs] 7.2 63 0.0210 0.15 Sheet Flow, First 100' Flowpath Grass: Short n= 0.150 P2= 2.70" 5.9 40 0.1000 0.11 Sheet Flow, Balance of First 100' Flowpath Woods: Light underbrush n= 0.400 P2= 2.70" 0.6 97 0.0290 2.74 Shallow Concentrated Flow, Balance of Flow to Diversion Unpaved Kv= 16.1 fps 0.3 131 0.0220 7.60 273.43 TraplVee/Rect Channel Flow, Balance of Longest Flowpath Bot.W=2.00' D=2.00' Z= 8.0 `I' Top.W=34.00' n= 0.030 14.0 331 Total Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 8 Subcatchment OSC-1: Off -Site Subcachment 1 Hydrograph 0.115- — 0.11= — 0.1' cfs —Runoff 0.105- — °�'- Type II 24-hr - 009- Rainfall=1.98" 0.085- — - °-°$- Runoff Area=29,462 sf 0.075- 00- " Runoff Volume=0.010 of a.os5- V 0°050- Runoff Depth>0.18" LL°.o°� Flow Length=331' _ -i - - i- °-04' - - - - - - - - - - Tc=14.0 min 0.035= — 0.03-' C N =69 0.025 — ' 0.02 — 0.015 0.01-- 4— 4 —1�- 0-005-1— 0 5 6 T 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment PSC-1: Proposed Subcatchment 1 Runoff = 4.47 cfs @ 12.00 hrs, Volume= 0.224 af, Depths 1.29" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=1.98" Area (sf) CN Description 38,873 98 Parking and Rooftop, HSG A 5,270 39 >75% Grass cover, Good, HSG A 46,701 96 Gravel surface, HSG A 90,844 94 Weighted Average 51,971 57.21% Pervious Area 38,873 42.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ftlsec) (cfs) 6.0 61 0.0320 0.17 Sheet Flow, First 100' Flowpath Grass. -Short n= 0.150 P2= 2.70" 0.8 72 0.0050 1.44 Shallow Concentrated Flow, Balance of Flow to Storm Drain Paved Kv= 20.3 fps 1.7 227 0.0040 2.19 0.76 Pipe Channel, 8- Storm 8.0" Round Area= 0.3 sf Perim= 2.1' r= 0.17' n= 0.013 8.5 360 Total Subcatchment PSC-1: Proposed Subcatchment 1 F Hydrograph - 4.47 cfs —Runoff I Type II 24-hr 4- Rainfall=1.98" Runoff Area=90,844 sf w 3- Runoff Volume=0.224 of U Runoff Depth>'1.29" 2- Flow Length=360' Tc=8.5 m i n CN=94 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 10 Summary for Reach DPE: Design Point Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.762 ac, 0.00% Impervious, Inflow Depth > 0.93" Inflow = 3.30 cfs @ 12.10 hrs, Volume= 0.214 of Outflow = 3.30 cfs @ 12.10 hrs, Volume= 0.214 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 3 0 a .. 5 6 7 Reach DPE: Design Point Existing Hydrograph 8 9 10 11 Inflow — Outflow Inflow Area=2.762 ac .............. ..... 12 13 14 15 16 Time (hours) 17 18 19 20 Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 11 Summary for Reach DPP: Design Point Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.762 ac, 32.31% Impervious, Inflow Depth > 0.04" Inflow = 0.11 cfs [3a 12.11 hrs, Volume= 0.010 of Outflow = 0.11 cfs @ 12.11 hrs, Volume= 0.01Oaf, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 0-115 - 0.11- 0.105 - 0.1 O o9s= 0.09- 0.oss- 0.0s- 0.075' — - 0.07 ; — t 0 o65-' -0.06;— o o.055-' — t 7 �- 0.045 ' — 0.04=— — — — 0.035- — t 0-03' — — — — 0.025- — 0-02= 0.015 0-01 0.005- 0 Reach DPP: Design Point Proposed Hydrograph Inflow — Outflow Inflow Area=2.762 ac 5 6 7 8 9 10 11 -- � —F —1 1 1—. ... ... ... .. 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 12 Summary for Pond FB: Forebay Inflow Area = 2.085 ac, 42.79% Impervious, Inflow Depth > 1.29" Inflow = 4.47 cfs @ 12.00 hrs, Volume= 0.224 of Outflow = 1.09 cfs @ 12.21 hrs, Volume= 0.193 af, Atten= 76%, Lag= 12.6 min Discarded = 0.29 cfs @ 13.06 hrs, Volume= 0.173 of Primary = 0.87 cfs @ 12.21 hrs, Volume= 0.020 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 1,175.13' @ 12.21 hrs Surf.Area= 1,576 sf Storage= 4,599 cf Flood Elev= 1,175.50' Surf.Area= 0 sf Storage= 4,893 cf Plug -Flow detention time= 153.3 min calculated for 0.193 of (86% of inflow) Center -of -Mass det. time= 110.5 min ( 877.1 - 766.6 ) Volume Invert Avail.Storage Storage Description #1 1,171.00' 4,893 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 1,171.00 334 0 0 1,172.00 608 471 471 1,173.00 1,023 816 1,287 1,174.00 1,511 1,267 2,554 1,175.00 2,112 1,812 4,365 1,175.50 0 528 4,893 Device Routinq Invert Outlet Devices #1 Primary 1,175,00' 8.0' long x 4.0' 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 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 1,171.00' 6.000 inlhr Exfiltration over Surface area Discarded OutFlow Max=0.29 cfs @ 13.06 hrs HW=1,175.00' (Free Discharge) L2=Exfiltration (Exfiltration Controls 0.29 cfs) Primary OutFlow Max=0.84 cfs @ 12.21 hrs HW=1,175.12' (Free Discharge) L1=Broad -Crested Rectangular Wei r(We ir Controls 0.84 cfs @ 0.84 fps) Malchek - 1 Yr Rain Event Malchek Type 1! 24-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 13 Pond FB: Forebay Hydrograph r 4.47 cfs 4 Inflow Area=2.085 ac Peak Elegy=1,175.13' 3 Storage=4,599 cf 10,111111 1.09 cfs 1 _ 0.87 cfs 0.29 cfs 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Inflow — Outflow — Discarded Primary Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 14 Summary for Pond IB: Infiltration Basin Inflow Area = 2.085 ac, 42.79% Impervious, Inflow Depth = 0.12" Inflow = 0.87 cfs @ 12.21 hrs, Volume= 0.020 of Outflow = 0.29 cfs @ 12.46 hrs, Volume= 0.020 af, Atten= 66%, Lag= 15.1 min Discarded = 0.29 cfs @ 12.46 hrs, Volume= 0.020 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 1,172.17' @ 12.46 hrs Surf.Area= 2,106 sf Storage= 352 cf Flood Elev= 1,175.50' Surf.Area= 0 sf Storage= 10,704 cf Plug -Flow detention time= 13.6 min calculated for 0.020 of (100% of inflow) Center -of -Mass det. time= 13.6 min ( 754.5 - 740.8 ) Volume Invert Avail.Storage Storage Description #1 1,172.00' 10,704 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 1,172.00 1,981 0 0 1,173.00 2,706 2,344 2,344 1,174.00 3,556 3,131 5,475 1,175.00 4,602 4,079 9,554 1,175.50 0 1,151 10,704 Device Routinq Invert Outlet Devices #1 Discarded 1,172.00' 6.000 inlhr Exfiltration over Surface area #2 Primary 1,174.50' 10.0' long x 4.0' 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 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Discarded Oufflow Max=0.29 cfs @ 12.46 hrs HW=1,172.17' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.29 cfs) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=1,172.00' (Free Discharge) L2=Broad -Crested Rectangular Weir ( Controls 0.00 cfs) Malchek - 1 Yr Rain Event Malchek Type 1124-hr Rainfall= 1. 98" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 15 0-95- — 0.9 0.86 0.s- — - 015- — - 0.7 0-65- 0.6- m 0.55- V o 0-45 LL 0.4- 0.35- 0.3- 0-25 0.2- 0.15- 0.1- 0.00 cfs 0, 5 6 Pond IB: Infiltration Basin Hydrograph 0.87 ofs Inflow Area=2.085 ac Peak Elegy=1,172.17' —I — — 5 forage=352 cf r 12 13 Time (hours) 14 15 16 17 18 19 20 Inflow — Outflow — Discarded Primary Malchek - 10 Yr Rain Event Malchek Prepared by {enter your company name here} HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.393 39 >75% Grass cover, Good, HSG A (ESC-1, ❑SC-1, PSC-1) 1921 95 Gravel surface, HSG A (ESC-1, OSC-1, PSC-1) 0.892 98 Parking and Rooftop, HSG A (PSC-1) 0.317 30 Woods, Good, HSG A (ESC-1, OSC-1) 5.523 88 TOTAL AREA Printed 2/24/2023 Pacie 1 Malchek - 10 Yr Rain Event Malchek Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 2 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.393 0.000 0.000 0.000 0.000 0.393 >75% Grass cover, Good ESC-1, OSC-1, PSC-1 3.921 0.000 0.000 0.000 0.000 3.921 Gravel surface ESC-1, OSC-1, PSC-1 0.892 0.000 0.000 0.000 0.000 0.892 Parking and Rooftop PSC-1 0.317 0.000 0.000 0.000 0.000 0.317 Woods, Good ESC-1, OSC-1 5.523 0.000 0.000 0.000 0.000 5.523 TOTAL AREA Malchek - 10 Yr Rain Event Malchek Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 3 Pipe Listing (all nodes) Line# Node In -Invert Out -Invert Length Slope n Diam/Width Height Inside -Pill Number (feet) (feet) (feet) (ftlft) (inches) (inches) (inches) 1 PSC-1 0.00 0.00 227.0 0.0040 0.013 8.0 0.0 0.0 Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Pacie 4 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmentESC-1: Existing Runoff Area=120,294 sf 0.00% Impervious Runoff Depth>2.08" Flow Length=605' Tc=17.8 min CN=89 Runoff=7.23 cfs 0.478 of SubcatchmentOSC-1: Off -Site Runoff Area=29,462 sf 0.00% Impervious Runoff Depth>0.78" Flow Length=331' Tc=14.0 min CN=69 Runoff=0.72 cfs 0.044 of SubcatchmentPSC-1: Proposed Runoff Area=90,844 sf 42.79% Impervious Runoff Depth>2.54" Flow Length=360' Tc=8.5 min CN=94 Runoff=8.45 cfs 0.441 of Reach DPE: Design Point Existing Inflow=7.23 cfs 0.478 of Outflow=7.23 cfs 0.478 of Reach DPP: Design Point Proposed Inflow=0.72 cfs 0.044 of Outflow=0.72 cfs 0.044 of Pond FB: Forebay Peak Elev=1,175.54' Storage=4,893 cf Inflow=8.45 cfs 0.441 of Discarded=0.29 cfs 0.208 of Primary=8.36 cfs 0.181 of Outflow=8.36 cfs 0.389 of Pond IB: Infiltration Basin Peak Elev=1,174.12' Storage=5,919 cf Inflow=8.36 cfs 0.181 of ❑iscarded=0.51 cfs 0.181 of Primary=0.00 cfs 0.000 of Outflow=0.51 cfs 0.181 of Total Runoff Area = 5.523 ac Runoff Volume = 0.964 of Average Runoff Depth = 2.09" 83.84% Pervious = 4.631 ac 16.16% Impervious = 0.892 ac Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment ESC-1: Existing Subcatchment 1 Runoff = 7.23 cfs @ 12.10 hrs, Volume= 0.478 af, Depths 2.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=3.37" Area (sf) CN Description 6,910 30 Woods, Good, HSG A 5,930 39 >75% Grass cover, Good, HSG A 107,454 96 Gravel surface, HSG A 120,294 89 Weighted Average 120,294 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) [cfs] 7.2 63 0.0210 0.15 Sheet Flow, First 100' Flowpath Grass: Short n= 0.150 P2= 2.70" 5.9 40 0.1000 0.11 Sheet Flow, Balance of First 100' Flowpath Woods: Light underbrush n= 0.400 P2= 2.70" 4.7 502 0.0120 1.76 Shallow Concentrated Flow, Balance of Longest Flowpath Unpaved Kv= 16.1 fps 17.8 605 Total 8 7- 6- 5- V _ 4 O LL 3- 2 1 4 5 Subcatchment ESC-1: Existing Subcatchment 1 Hydrograph 7.25 � —Runoff Type II 24-hr Rainfall=3.37" Runoff Area=120,294 sf Runoff Volume=0.478 of Runoff Depth>2.08" Flow Length=605' Tc=17.8 min CN=89 6 7 8 9 10 11 12 13 14 15 16 17 Time (hours) 18 19 20 Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment OSC-1: Off -Site Subcachment 1 Runoff = 0.72 cfs @ 12.08 hrs, Volume= 0.044 af, Depths 0.78" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=3.37" Area (sf) CN Description 6,910 30 Woods, Good, HSG A 5,930 39 >75% Grass cover, Good, HSG A 16,622 96 Gravel surface, HSG A 29,462 69 Weighted Average 29,462 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) [cfs] 7.2 63 0.0210 0.15 Sheet Flow, First 100' Flowpath Grass: Short n= 0.150 P2= 2.70" 5.9 40 0.1000 0.11 Sheet Flow, Balance of First 100' Flowpath Woods: Light underbrush n= 0.400 P2= 2.70" 0.6 97 0.0290 2.74 Shallow Concentrated Flow, Balance of Flow to Diversion Unpaved Kv= 16.1 fps 0.3 131 0.0220 7.60 273.43 Trap/Vee/Rect Channel Flow, Balance of Longest Flowpath Bot.W=2.00' D=2.00' Z= 8.0 `I' Top.W=34.00' n= 0.030 14.0 331 Total Malchek - 10 Yr Rain Event Ma[chek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 7 Subcatchment ❑SC-1: Off -Site Subcachment 1 Hydrograph o-a- 0-75- 0.72 cfs — — Runaft 0.7- i 0.65- Type II 24-ir_ 0.6-- -- — Rainfr+alll=y�3.3-7"— 0.55-- Runoff -ilea=295462—sf- 0.5 T 0.45 Runoff Volume=0.044 af. V 3 0.a= 0 Runoffs ❑epth>0.78"— M 0.35 - 0.3- FIQW Len�tl�33�1 0.25 — T-c=14.R m i n 02- CN=fig 0-1= 0 .. 5 6 7 S 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 s/n 01939 D 2018 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment PSC-1: Proposed Subcatchment 1 Runoff = 8.45 cfs @ 11.99 hrs, Volume= 0.441 af, Depths 2.54" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=3.37" Area (sf) CN Description 38,873 98 Parking and Rooftop, HSG A 5,270 39 >75% Grass cover, Good, HSG A 46,701 96 Gravel surface, HSG A 90,844 94 Weighted Average 51,971 57.21% Pervious Area 38,873 42.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 61 0.0320 0.17 Sheet Flow, First 100' Flowpath Grass. -Short n= 0.150 P2= 2.70" 0.8 72 0.0050 1.44 Shallow Concentrated Flow, Balance of Flow to Storm Drain Paved Kv= 20.3 fps 1.7 227 0.0040 2.19 0.76 Pipe Channel, 8- Storm 8.0" Round Area= 0.3 sf Perim= 2.1' r= 0.17' n= 0.013 8.5 360 Total 5ubcatchment PSC-1: Proposed Subcatchment 1 Hydrograph 8.45 cfs I Type II 24-hr 6 7 8 9 10 11 Rainfall=3.37" Runoff Area=90,844 sf Runoff Volume=0.441 of Runoff Depth>2.54" Flow Length=360' Tc=8.5 m i n CN=94 12 13 14 15 16 17 18 Time (hours) 19 20 — Runoff Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 9 Summary for Reach DPE: Design Point Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.762 ac, 0.00% Impervious, Inflow Depth > 2.08" Inflow = 7.23 cfs @ 12.10 hrs, Volume= 0.478 of Outflow = 7.23 cfs @ 12.10 hrs, Volume= 0.478 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach DPE: Design Point Existing Hydrograph 8- _ 7.23 cfs '- Inflow Area=2.762 ac 5 3- 2- 1 a.. ... ..... 5 6 7 8 9 10 11 12 13 14 15 16 17 1s 19 20 Time (hours) — I nflow — Outflow Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 10 Summary for Reach DPP: Design Point Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.762 ac, 32.31% Impervious, Inflow Depth > 0.19" Inflow = 0.72 cfs [3a 12.08 hrs, Volume= 0.044 of Outflow = 0.72 cfs @ 12.08 hrs, Volume= 0.044 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Reach DPP: Design Point Proposed Hydrograph 015 0-72 ofs 07 ` Inflow Area=2.762 ac o-fi5- 0-6- 0.55- 0.5- w 0.45 . 0 0-4- l � 0.35- 0.3- 0.25- 0.2- 0A5- 0.1- 0-05 0 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — Inflow — Outflow Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 11 Summary for Pond FB: Forebay [82] Warning: Early inflow requires earlier time span [93] Warning: Storage range exceeded by 0.04' [58] Hint: Peaked 0.04' above defined flood level Inflow Area = 2.085 ac, 42.79% Impervious, Inflow Depth > 2.54" Inflow = 8.45 cfs @ 11.99 hrs, Volume= 0.441 of Outflow = 8.36 cfs @ 11.99 hrs, Volume= 0.389 af, Atten= 1 %, Lag= 0.0 min Discarded = 0.29 cfs @ 14.09 hrs, Volume= 0.208 of Primary = 8.36 cfs @ 11.99 hrs, Volume= 0.181 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 1,175.54' @ 11.99 hrs 3urf.Area= 0 sf Storage= 4,893 cf Flood Elev= 1,175.50' Surf.Area= 0 sf Storage= 4,893 cf Plug -Flow detention time= 95.0 min calculated for 0.388 of (88% of inflow) Center -of -Mass det. time= 56.5 min ( 808.4 - 751.9 ) Volume Invert Avail.Storage Storage Description #1 1,171.00' 4,893 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 1,171.00 334 0 0 1,172.00 608 471 471 1,173.00 1,023 816 1,287 1,174.00 1,511 1,267 2,554 1,175.00 2,112 1,812 4,365 1,175.50 0 528 4,893 Device Routinq Invert Outlet Devices #1 Primary 1,175,00' 8.0' long x 4.0' 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 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 1,171.00' 6.000 inlhr Exfiltration over Surface area Discarded OutF low Max=0.29 cfs @ 14.09 hrs HW=1,175.00' (Free ❑ischarge) L2=Exfiltration (Exfiltration Controls 0.29 cfs) Primary OutFlow Max=8.22 cfs @ 11.99 hrs HW=1,175.53' {Free Discharge} L1=Broad -Crested Rectangular Wei r(We ir Controls 8.22 cfs @ 1.93 fps) Malchek - 10 Yr Rain Event Malchek Type I! 24-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD010.00-21 sln O1939 a 2018 HydroCAD Software Solutions LLC Page 12 Pond FB: Forebay Hydrograph 9- — Inflow 8-36 cfs — Outflow — Discarded 8 l Inflow Area=2.085 ac —Primary 7=— — Peak Elegy=1,175.54' 6_— — Storage=4,893 cf 0- 1 --- 5 6 7 8 9 10 i 0.29 cfs 11 12 13 14 15 16 Time (hours) 17 Malchek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 13 Summary for Pond IB: Infiltration Basin Inflow Area = 2.085 ac, 42.79% Impervious, Inflow Depth = 1.04" Inflow = 8.36 cfs @ 11.99 hrs, Volume= 0.181 of Outflow = 0.51 cfs @ 12.58 hrs, Volume= 0.181 af, Atten= 94%, Lag= 35.5 min Discarded = 0.51 cfs @ 12.58 hrs, Volume= 0.181 of Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 1,174.12' @ 12.58 hrs Surf.Area= 3,684 sf Storage= 5,919 cf Flood Elev= 1,175.50' Surf.Area= 0 sf Storage= 10,704 cf Plug -Flow detention time= 129.6 min calculated for 0.180 of (100% of inflow) Center -of -Mass det. time= 129.9 min ( 861.3 - 731.4 ) Volume Invert Avail.Storage Storage Description #1 1,172.00' 10,704 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 1,172.00 1,981 0 0 1,173.00 2,706 2,344 2,344 1,174.00 3,556 3,131 5,475 1,175.00 4,602 4,079 9,554 1,175.50 0 1,151 10,704 Device Routinq Invert Outlet Devices #1 Discarded 1,172.00' 6.000 inlhr Exfiltration over Surface area #2 Primary 1,174.50' 10.0' long x 4.0' 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 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Discarded Oufflow Max=0.51 cfs @ 12.58 hrs HW=1,174.12' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.51 cfs) Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=1,172.00' (Free Discharge) L2=Broad -Crested Rectangular Weir ( Controls 0.00 cfs) Mal chek - 10 Yr Rain Event Malchek Type 1124-hr Rainfall=3.37" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD910.00-21 sln 01939 ©2018 HydroCAD Software Solutions LLC Page 14 Pond IB: Infiltration Basin Hydrograph 8.36 cis — Inflow — Outflow a- Inflow Area=2.085 ac =PmaTy 7- Peak Elegy=1,174.12' 6=— — — — Storage=5,919 cf I I 0 LL 4-- 3 - — — — — — — — — 2_— — — — — Q.QC efs r , Q 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 100 Yr Rain Event Malchek Prepared by {enter your company name here} HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.393 39 >75% Grass cover, Good, HSG A (ESC-1, ❑SC-1, PSC-1) 1921 95 Gravel surface, HSG A (ESC-1, OSC-1, PSC-1) 0.892 98 Parking and Rooftop, HSG A (PSC-1) 0.317 30 Woods, Good, HSG A (ESC-1, OSC-1) 5.523 88 TOTAL AREA Printed 2/24/2023 Pacie 1 Malchek - 100 Yr Rain Event Malchek Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 2 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.393 0.000 0.000 0.000 0.000 0.393 >75% Grass cover, Good ESC-1, OSC-1, PSC-1 3.921 0.000 0.000 0.000 0.000 3.921 Gravel surface ESC-1, OSC-1, PSC-1 0.892 0.000 0.000 0.000 0.000 0.892 Parking and Rooftop PSC-1 0.317 0.000 0.000 0.000 0.000 0.317 Woods, Good ESC-1, OSC-1 5.523 0.000 0.000 0.000 0.000 5.523 TOTAL AREA Malchek - 100 Yr Rain Event Malchek Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 3 Pipe Listing (all nodes) Line# Node In -Invert Out -Invert Length Slope n Diam/Width Height Inside -Pill Number (feet) (feet) (feet) (ftlft) (inches) (inches) (inches) 1 PSC-1 0.00 0.00 227.0 0.0040 0.013 8.0 0.0 0.0 Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Pacie 4 Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method SubcatchmentESC-1: Existing Runoff Area=120,294 sf 0.00% Impervious Runoff Depth>4.13" Flow Length=605' Tc=17.8 min CN=89 Runoff=13.88 cfs 0.950 of SubcatchmentOSC-1: Off -Site Runoff Area=29,462 sf 0.00% Impervious Runoff Depth>2.24" Flow Length=331' Tc=14.0 min CN=69 Runoff=2.19 cfs 0.126 of SubcatchmentPSC-1: Proposed Runoff Area=90,844 sf 42.79% Impervious Runoff Depth>4.64" Flow Length=360' Tc=8.5 min CN=94 Runoff=14.92 cfs 0.806 of Reach DPE: Design Point Existing Inflow=13.88 cfs 0.950 of Outflow=13.88 cfs 0.950 of Reach DPP: Design Point Proposed Inflow=12.74 cfs 0.330 of Outflow=12.74 cfs 0.330 of Pond FB: Forebay Peak Elev=1,175.79' Storage=4,893 cf Inflow=14.92 cfs 0.806 of ❑iscarded=0.29 cfs. 0.244 of Primary=14.92 cfs 0.483 of Outflow=14.92 cfs 0.727 of Pond IB: Infiltration Basin Peak Elev=1,175.05' Storage=9,762 cf Inflow=14.92 cfs 0.483 of Discarded=0.63 cfs 0.279 of Primary=10.55 cfs 0.204 of Outflow=11.17 cfs 0.483 of Total Runoff Area = 5.523 ac Runoff Volume = 1.883 of Average Runoff Depth = 4.09" 83.84% Pervious = 4.631 ac 16.16% Impervious = 0.892 ac Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment ESC-1: Existing Subcatchment 1 Runoff = 13.88 cfs @ 12.10 hrs, Volume= 0.950 af, Depths 4.13" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=5.67" Area (sf) CN Description 6,910 30 Woods, Good, HSG A 5,930 39 >75% Grass cover, Good, HSG A 107,454 96 Gravel surface, HSG A 120,294 89 Weighted Average 120,294 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) [cfs] 7.2 63 0.0210 0.15 Sheet Flow, First 100' Flowpath Grass: Short n= 0.150 P2= 2.70" 5.9 40 0.1000 0.11 Sheet Flow, Balance of First 100' Flowpath Woods: Light underbrush n= 0.400 P2= 2.70" 4.7 502 0.0120 1.76 Shallow Concentrated Flow, Balance of Longest Flowpath Unpaved Kv= 16.1 fps 17.8 605 Total Subcatchment ESC-1: Existing Subcatchment 1 Hydrograph 15 113.88 cfs — RunofF 14- 13_ Type II 24-hr 12- Rainfall=5.67" 11 10= Runoff Area=120,294 sf T Runoff Volume=0.950 of o $_ Runoff De pth >4.13" LL 6- Flow Length=605' 5- Tc=17.8 min 4- 3- CN=89 z- 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment OSC-1: Off -Site Subcachment 1 Runoff = 2.19 cfs @ 12.06 hrs, Volume= 0.126 af, Depths 2.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=5.67" Area (sf) CN Description 6,910 30 Woods, Good, HSG A 5,930 39 >75% Grass cover, Good, HSG A 16,622 96 Gravel surface, HSG A 29,462 69 Weighted Average 29,462 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ftlft) (ftlsec) [cfs] 7.2 63 0.0210 0.15 Sheet Flow, First 100' Flowpath Grass: Short n= 0.150 P2= 2.70" 5.9 40 0.1000 0.11 Sheet Flow, Balance of First 100' Flowpath Woods: Light underbrush n= 0.400 P2= 2.70" 0.6 97 0.0290 2.74 Shallow Concentrated Flow, Balance of Flow to Diversion Unpaved Kv= 16.1 fps 0.3 131 0.0220 7.60 273.43 Trap/Vea/Rect Channel Flow, Balance of Longest Flowpath Bot.W=2.00' D=2.00' Z= 8.0 `I' Top.W=34.00' n= 0.030 14.0 331 Total Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 7 2 fl 5 Subcatchment OSC-1: Off -Site Subcachment I Hydrograph 6 7 8 2.19 ifs 6 Type II 24-hr Rainfall=5.67" Runoff Area=29,462 sf Runoff Volume=0.126 of Runoff Depth>2.24" Flow Length=331' Tc=14.0 min CN=69 9 10 11 12 13 14 15 16 Time (hours) 17 18 19 20 — Runoff Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 s/n 01939 D 2018 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment PSC-1: Proposed Subcatchment 1 Runoff = 14.92 cfs @ 11.99 hrs, Volume= 0.806 af, Depths 4.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr Rainfall=5.67" Area (sf) CN Description 38,873 98 Parking and Rooftop, HSG A 5,270 39 >75% Grass cover, Good, HSG A 46,701 96 Gravel surface, HSG A 90,844 94 Weighted Average 51,971 57.21% Pervious Area 38,873 42.79% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) [cfs] 6.0 61 0.0320 0.17 Sheet Flow, First 100' Flowpath Grass. -Short n= 0.150 P2= 2.70" 0.8 72 0.0050 1.44 Shallow Concentrated Flow, Balance of Flow to Storm Drain Paved Kv= 20.3 fps 1.7 227 0.0040 2.19 0.76 Pipe Channel, 8- Storm 8.0" Round Area= 0.3 sf Perim= 2.1' r= 0.17' n= 0.013 8.5 360 Total Subcatchment PSC-1: Proposed Subcatchment 1 Hydrograph 16 = 114.92 cfs I — Runoff 15- - 14- Type II 24-hr ;� Rainfall=5.67" 117 Runoff Area=90,844 sf w 10- Runoff Volume=0.806 of 9= o s= Runoff Depth>4.64" 7- Flow Length=360' 6= Tc=8.5 m i n 4- C N =94 3- 2 1- 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 9 Summary for Reach DPE: Design Point Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.762 ac, 0.00% Impervious, Inflow Depth > 4.13" Inflow = 13.88 cfs @ 12.10 hrs, Volume= 0.950 of Outflow = 13.88 cfs @ 12.10 hrs, Volume= 0.950 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 15- 14- 13- 12- 11- 10- 9- a _ w _ 8 3 o 7-- 4- 3- 2- 1 o=, 5 6 Reach DPE: Design Point Existing Hydrograph 13.88 cfs — I nflow — Outflow Inflow Area=2.762 ac ..... ... I .... ........ 7 8 9 10 11 12 13 Time (hours) 14 15 16 17 18 19 20 Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 10 Summary for Reach DPP: Design Point Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 2.762 ac, 32.31% Impervious, Inflow ❑epth a 1.44" Inflow = 12.74 cfs @ 12.07 hrs, Volume= 0.330 of Outflow = 12.74 cfs @ 12.07 hrs, Volume= 0.330 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs 14 13- 12- 11- 10- 9- w 8- o - 3 7 o U. 6- 5- 4- 3- 2- 1 5 6 Reach ❑PP: Design Point Proposed Hydrograph 112-74 cfs I Inflow Area=2.762 ac 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) — I nflow — Outflow Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 11 Summary for Pond FB: Forebay [82] Warning: Early inflow requires earlier time span [93] Warning: Storage range exceeded by 0.29' [58] Hint: Peaked 0.29' above defined flood level Inflow Area = 2.085 ac, 42.79% Impervious, Inflow Depth > 4.64" Inflow = 14.92 cfs @ 11.99 hrs, Volume= 0.806 of Outflow = 14.92 cfs @ 11.99 hrs, Volume= 0.727 af, Atten= 0%, Lag= 0.0 min Discarded = 0.29 cfs @ 16.16 hrs, Volume= 0.244 of Primary = 14.92 cfs @ 11.99 hrs, Volume= 0.483 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 1,175.79' @ 11.99 hrs 3urf.Area= 0 sf Storage= 4,893 cf Flood Elev= 1,175.50' Surf.Area= 0 sf Storage= 4,893 cf Plug -Flow detention time= 66.1 min calculated for 0.724 of (90% of inflow) Center -of -Mass det. time= 32.1 min ( 774.0 - 741.9 ) Volume Invert Avail.Storage Storage Description #1 1,171.00' 4,893 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 1,171.00 334 0 0 1,172.00 608 471 471 1,173.00 1,023 816 1,287 1,174.00 1,511 1,267 2,554 1,175.00 2,112 1,812 4,365 1,175.50 0 528 4,893 Device Routinq Invert Outlet Devices #1 Primary 1,175,00' 8.0' long x 4.0' 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 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 #2 Discarded 1,171.00' 6.000 inlhr Exfiltration over Surface area Discarded OutFlow Max=0.29 cfs @ 16.16 hrs HW=1,175.00' (Free Discharge) L2=Exfiltration (Exfiltration Controls 0.29 cfs) Primary OutFlow Max=14.66 cfs @ 11.99 hrs HW=1,175.78' (Free ❑ischarge) L1=Broad -Crested Rectangular Weir (We ir Controls 14.66 cfs @ 2.36 fps) Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 12 Pond FB: Forebay Hydrograph 18= 15= 1 14.92 cfs — Inflow — Outflow 14= Inflow Area=2.085 ac — Discarded —Primary 13--'Peak 12— — — - — — - Elegy'I ,175.79' L I l_ L Storage=4,893 cf V 8- —1—I 1 F 4-4-4 4- 3' 2= 5 6 7 8 IN 9 10 11 12 13 14 15 16 17 18 19 20 Time (hours) Malchek - 100 Yr Rain Event Malchek Type 1124-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 D 2018 HydroCAD Software Solutions LLC Page 13 Summary for Pond IB: Infiltration Basin [79] Warning: Submerged Pond FB Primary device # 1 by 0.02' Inflow Area = 2.085 ac, 42.79% Impervious, Inflow Depth = 2.78" Inflow = 14.92 cfs @ 11.99 hrs, Volume= 0.483 of Outflow = 11.17 cfs @ 12.07 hrs, Volume= 0.483 af, Atten= 25%, Lag= 4.8 min Discarded = 0.63 cfs @ 12.12 hrs, Volume= 0.279 of Primary = 10.55 cfs @ 12.07 hrs, Volume= 0.204 of Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 1,175.05' @ 12.07 hrs Surf.Area= 4,164 sf Storage= 9,762 cf Flood Elev= 1,175.50' Surf.Area= 0 sf Storage= 10,704 cf Plug -Flow detention time= 93.3 min calculated for 0.481 of (100% of inflow) Center -of -Mass det. time= 93.7 min ( 827.7 - 734.0 ) Volume Invert Avail -Storage Storaqe Description #1 1,172.00' 10,704 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 1,172.00 1,981 0 0 1,173.00 2,706 2,344 2,344 1,174.00 3,556 3,131 5,475 1,175.00 4,602 4,079 9,554 1,175.50 0 1,151 10,704 Device Routinq Invert Outlet Devices #1 Discarded 1,172.00' 6.000 inlhr Exfiltration over Surface area #2 Primary 1,174.50' 10.0' long x 4.0' 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 4.00 4.50 5.00 5.50 Coef. (English) 2.38 2.54 2.69 2.68 2.67 2.67 2.65 2.66 2.66 2.68 2.72 2.73 2.76 2.79 2.88 3.07 3.32 Discarded OutFlow Max=0.64 cfs @ 12.12 hrs HW=1,174.98' (Free Discharge) L1=Exfiltration (Exfiltration Controls 0.64 cfs) Primary OutFlow Max=9.69 cfs @ 12.07 hrs HW=1,175.01' (Free Discharge) L2=Broad -Crested Rectangular Weir (Weir Controls 9.69 cfs @ 1.88 fps) Malchek - 100 Yr Rain Event Malchek Type I! 24-hr Rainfall=5.67" Prepared by {enter your company name here} Printed 2/24/2023 HydroCAD® 10.00-21 sln 01939 a 2018 HydroCAD Software Solutions LLC Page 14 18= 15= 14= 13=- 12 11 14: V 8-' O LL 7: s 5:- 4 3= 2= 1=- 0. 5 Pond IB: Infiltration Basin Hydrograph 6 7 8 9 10 11 114-92 cfs I Inflow Area=2.085 ac 11.117cfs Pea k-tlev=1,41&OT - 1055 cfs = rtSLOrae "6 _ - -I- I- - 12 13 14 15 16 17 18 19 20 Time thours] Inflow — Outflow — Discarded Primary APPENDIX 3 SOILS DATA USDA United States Department of Agriculture I V RCS Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Cortland County, New York Malchek Car Lot January 23, 2023 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http:llwww.nres.usda.govlwps/ portallnreslmainlsoilslhealth/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https:l/offices.se.egov.usda.gov/locatorlapp?agency=nres) or your NRCS State Soil Scientist (http:l/www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/? cid=nres142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, ❑irector, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, ❑.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. Q Contents Preface.................................................................................................................... 2 How Soil Surveys Are Made..................................................................................5 SoilMap.................................................................................................................. 8 SoilMap................................................................................................................9 Legend................................................................................................................10 MapUnit Legend................................................................................................ 11 MapUnit Descriptions.........................................................................................11 Cortland County, New York.............................................................................13 125A—Howard gravelly loam, 0 to 3 percent slopes .................................. 13 125B—Howard gravelly loam, 3 to 8 percent slopes .................................. 14 References............................................................................................................16 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil -vegetation -landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes {units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil 5 Custom Soil Resource Report scientists classified and named the soils in the survey area, they compared the individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soil -landscape model and predictions and to verify the classification of the soils at specific locations. Once the soil -landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field -observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and A Custom Soil Resource Report identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. E:3 Custom Soil Resource Report Soil Map :v 4OM20 4i7C."rl-' 40Lt3R7 400.°.fl(7 4U(AM 4 1Ak r, 40)W aC�,, ;n 4,YAM 42° 34' S3' N _ i �q ZP Y wR t so .� Y i v � a m ' ti 42° 34' 4T N v 400320 4DO340 40M 400380 4004W 4004Y0 4DDW 3 Map Scale: 1:1,250 R printed on A landscape (11" x 8.5") sheet Meters N o 15 30 90 90 0 50 100 200 300 L Map projection: Web Men:ator Corner oxrdnates: W S84 Edge tics; UW Zane 18N WCx584 9 40rr1fi[: •1".01IR' " 1.'ftYi 400520 4DX40 40D%O Aq 42° 33' 53' N �S a v 42° 34' 47N 400580 3 MAP LEGEND Area of Interest (AOI) Area of Interest (AO I) Soils Soil Map Unit Polygons �x Soil Map Unit Lines p Soil Map Unit Points Special Point Features U Blowout R Borrow Pit X Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry 0 Miscellaneous Water 0 Perennial Water V Rock Outcrop + Saline Spot Sandy Spot 4g. Severely Eroded Spot 0 Sinkhole Slide or Slip Sodic Spot Custom Sail Resource Report f Spoil Area Stony Spot Very Stony Spot Wet Spot Other - Special Line Features Water Features Streams and Canals Transportation Rails ry Interstate Highways US Routes Major Roads Local Roads Background !� , Aerial Photography MAP INFORMATION The soil surveys that comprise your A01 were mapped at 1:12,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator {EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version dates) listed below. Soil Survey Area: Cortland County, New York Survey Area Data: Version 21, Sep 9, 2022 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Apr 1, 2020—Oct 1, 2020 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 10 Custom Soil Resource Report Map Unit Legend Map Unit Symbol I Map Unit Name I Acres in AO1 I Percent of AO1 125A Howard gravelly loam, 0 to 3 2.5 50.0% percent slopes 125B Howard gravelly loam, 3 to 8 2.5 50.0% percent slopes Totals for Area of Interest 5.1 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil ❑r soils in the map unit, and thus they d❑ not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, 11 Custom Soil Resource Report ❑nsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a sail series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha -Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 12 Custom Soil Resource Report Cortland County, New York 125A—Howard gravelly loam, U to 3 percent slopes Map Unit Setting National map unit symbol: 2rwbk Elevation: 160 to 2,460 feet Mean annual precipitation: 31 to 70 inches Mean annual air temperature: 39 to 52 degrees F Frost -free period: 105 to 180 days Farmland classification: All areas are prime farmland Map Unit Composition Howard and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Howard Setting Landform: Terraces, valley trains Landform position {two-dimensional): Summit Landform position {three-dimensional): Tread Down -slope shape: Convex, linear Across -slope shape: Convex, linear Parent material: Gravelly loamy glaciofluvial deposits over sandy and gravelly glaciofluvial deposits, containing significant amounts of limestone Typical profile Ap - 0 to 9 inches: gravelly loam FIB - 9 to 24 inches: very gravelly loam Bt - 24 to 45 inches: very gravelly loam C - 45 to 72 inches: stratified extremely gravelly sand Properties and qualities Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit wafer (Ksat): Moderately high to high (0.60 to 6.00 inihr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of pending.• None Calcium carbonate, maximum content.' 15 percent Available water supply, 0 to 60 inches: Low (about 5.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A Hydric soil rating: No Minor Components Phelps Percent of map unit: 5 percent 13 Custom Soil Resource Report Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down -slope shape: Concave, linear Across -slope shape: Convex, linear Hydric soil rating: No Lansing Percent of map unit: 5 percent Landform: Till plains, hills, drumlinoid ridges Landform position (two-dimensional): Summit, shoulder Landform position (three-dimensional): Crest, side slope Down -slope shape: Convex, concave Across -slope shape: Convex, linear Hydric soil rating: No 92513—Howard gravelly loam, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 2rwbl Elevation: 160 to 2,460 feet Mean annual precipitation: 31 to 70 inches Mean annual air temperature: 39 to 52 degrees F Frost -free period: 105 to 180 days Farmland classification: All areas are prime farmland Map Unit Composition Howard and similar soils: 90 percent Minor components: 10 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Howard Setting Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down -slope shape: Convex, linear Across -slope shape: Convex, linear Parent material: Gravelly loamy glaciofluvial deposits over sandy and gravelly glaciofluvial deposits, containing significant amounts of limestone Typical profile Ap - 0 to 9 inches: gravelly loam EIE - 9 to 24 inches: very gravelly loam Rt - 24 to 45 inches: very gravelly loam C - 45 to 72 inches: stratified extremely gravelly sand Properties and qualities Slope: 3 to 8 percent Depth to restrictive feature: More than 80 inches 14 Custom Soil Resource Report Drainage class: Well drained Capacity of the most limiting layer to transmit wafer (Ksat): Moderately high to high (0.60 to 6.00 inlhr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency ofponding: None Calcium carbonate, maximum content: 15 percent Available water supply, 0 to 50 inches: Low (about 5.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A Hydric soil rating: No Minor Components Lansing Percent of map unit: 5 percent Landform: Till plains, hills, drumlinoid ridges Landform position (two-dimensional): Shoulder Landform position (three-dimensional): Crest, side slope Down -slope shape: Convex, concave Across -slope shape: Convex, linear Hydric soil rating: N❑ Phelps Percent of map unit: 5 percent Landform: Terraces, valley trains Landform position (two-dimensional): Summit Landform position (three-dimensional): Tread Down -slope shape: Concave, linear Across -slope shape: Convex, linear Hydric soil rating: No 15 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep -water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/ arcs/detaillnationallsoils/?cid=nres142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http:/1 www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nresl42p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nresl42p2_O53580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http:llwww.nres.usda.gov/wps/portal/nres/detail/soils/ home/?cid=nres142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/ d etai Ilnational/landu se/rangepastu rel?cid=stel prd b 1043084 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nres.usda.gov/wps/portal/ nres/detail/soils/scientists/?cid=nres142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/? cid=nres142p2_d53624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nres.usda.gov/1nternet/FSE—DOCUMENTS/nrcs142p2_052290.pdf 17 APPENDIX 4 PRECIPITATION DATA Extreme Precipitation Tables: 42.599°N, 76.205°W http:llprecip-cas.comell.edu/data.php? 1670176963382 Extreme Precipitation Tables Northeast Regional Climate Center Data represents point estimates calculated from partial duration series. ARprecipitation amounts are displayed in inches. Smoothing Yes State New York Location Longitude 76.205 degrees West Latitude 42.599 degrees North Elevation 0 feet Date/Time Sun, 04 Dec 2022 13:02:43 -0500 Extreme Precipitation Estimates 5min lOmin 15min 30min 60min 120min lhr 2hr 3hr 6hr 12hr 24hr 48hr lday 2day May 7day 10day lyr 0.28 0.42 0.53 0.69 0.86 1.06 lyr 0.74 0.95 1.20 1.43 1.69 1.98 2.25 lyr 1.75 2.16 2.61 3.16 3.62 lyr 2yr 0.32 0.50 0.62 0.82 1.03 1.26 2yr 0.89 1.13 1.43 1.70 2.01 2.35 2.63 2yr 2.08 2.53 2.96 3.55 4.08 2yr Syr 0.39 0.59 0.74 1.00 1.27 1.58 5yr 1.10 1.41 1.79 2.12 2.49 2.88 3.22 5yr 2.55 3.10 3.60 4.25 4.86 5yr 10yr 0.43 0.67 0.85 1.16 1.51 1.87 10yr 1.30 1.66 2.12 2.52 2.93 3.37 3.75 10yr 2.98 3.61 4.18 4.88 5.55 10yr 25yr 0.51 1 0.81 1.03 1 1.42 1.88 2.35 25yr 1.62 2.06 2.66 3.15 3.64 4.14 4.60 25yr 3.66 14.42 5.10 5.84 6.62 25yr 50yr 0.57 0.91 1.17 1.64 2.22 2.80 50yr 1.92 2.44 3.17 3.74 4.30 4.84 5.37 50yr 6 5.93 6.70 7.57 50yr 100yr 0.65 1.06 1.36 1.93 2.63 3.32 100yr 2.27 2.89 3.77 4.42 5.05 5.67 6.27 100yr3 45.877.(06 6.91 7.68 8.66 100yr 200yr 1500yr10.90 0.75 1.23 11.48 1.59 1 1.93 2.27 1 2.80 3.13 1 3.92 3.94 1 4.96 200yr 2.70 3.43 4.47 5.23 5.95 1500yr 3.38 430 5.62 6.54 73918.18 6.64 7.34 200yr 9.03 500yr17.2418.69 8.05 9,85110.57 8.81 9.90 200yr 11.84 500yr Lower Confidence Limits 5min 10min 15min 30min 60min 120min 1 lyr 0.25 0.39 0.47 0.63 0.78 0.87 2yr 0.32 0.49 0.60 0.81 1.00 1.12 1 5yr 0.35 0.55 0.68 0.93 1.18 1.33 110yr 0.39 0.60 0.74 1.04 1.34 1.51 125yr 0.44 0.67 0.83 1.19 1.56 1.79 150yr 0.48 0.73 0.91 1.31 1.77 2.04 1100yr 0.53 0.80 1.01 1.45 1.99 2.31 1200yr 0.59 0.88 1.12 1.62 2.26 2.64 1500yr 0.81 1.20 1.55 2.25 3.20 3.14 Upper Confidence Limits 1 5min 10min 15min 30min 60min 120min 1 lyr 0.30 0.46 0.56 0.75 0.93 1.04 1 2yr 0.34 0.53 0.65 0.88 1.08 1.20 1 5yr 0.41 0.63 0.78 1.07 1.37 1.56 10yr 0.48 0.74 0.92 1.28 1.66 1.93 125yr 0.60 0.91 1.13 1.62 2.13 2.55 150yr 0.71 1.08 1.34 1.93 2.59 3.15 1100yr 0.84 1.27 1.59 2.29 3.15 3.90 1200yr 0.99 1.49 1.89 2.74 3.82 4.82 1500yr 1.17 1.74 2.23 3.24 4.61 6.40 Puirrr�f8�_ y J 1f.x Northeast Regional Climate Center lhr 2hr 3hr 6hr 12hr 24hr 48hr, lday 2day 4day 7day 1Oday lyr 0.67 0.85 0.98 1.13 1.50 1.85 2.12 lyr 1.64 2.04 2.48 2.97 3.44 lyr 2yr 0.87 1.09 1.24 1.53 1.87 2.29 2.57 2yr 2.03 2.47 2.89 3.47 4.00 2yr 5yr 1.02 1.30 1.46 1.80 2.22 2.72 3.03 5yr 2.41 2.91 3.40 4.05 4.61 5yr 10yr 1.16 1.48 1.65 2.00 2.50 3.07 3.42 10yr 2.72 3.29 3.81 4.53 5.13 10yr 25yr 1.35 1.75 1.95 2.32 2.90 3.63 4.03 25yr 3.22 3.88 4.45 5.26 5.91 25yr 50yr 1.52 1.99 2.20 2.58 3.24 4.11 4.56 50yr 3.64 4.39 5.01 5.89 6.57 50yr 100yr 1.72 2.26 2.50 2.87 3.62 4.66 5.16 100yr 4.13 4.96 5.61 6.60 7.30 100yr 200yr 1.95 2.58 2.84 3.19 4.05 5.28 5.84 200yr 4.67 5.61 6.28 T41 8.11 200yr1 500yr 2.76 3.07 3.36 3.67 4.69 6.21 6.87 500yr 5.49 6.60 7.29 8.60 9.32 500yr1 lhr 2hr 3hr 6hr 12hr 24hr 48hr lday 2day 4day 7day 10day 1 lyr 0.80 1.02 1.19 1.49 1.81 2.09 2.36 lyr 1.85 2.27 2.77 3.32 3.77 lyr 1 2yr 0.93 1.17 1.32 1.65 2.02 2.42 2.70 2yr 2.14 2.60 3.04 3.63 4.19 2yr 1 5yr 1.18 1.53 1.70 2.09 2.57 3.07 3.41 5yr 2.72 3.28 3.81 4.49 5.14 5yr 1 10yr 1.43 1.89 2.07 2.52 3.13 3.68 4.06 10yr 3.26 3.91 4.53 5.26 6.01 10yr 1 25yr 1.84 2.50 2.68 3.25 4.06 4.70 5.15 25yr 4.16 4.96 5.71 6.49 7.43 25yr 1 50yr 2.24 3.08 3.26 3.94 4.95 5.68 6.19 50yr 5.03 5.95 6.82 7.61 8.73 50yr 1 100yr 2.72 3.81 3.96 4.80 6.03 6.85 7.42 100yr 6.06 T14 8.15 8.94 10.24 100yr1 200yr 3.30 4.71 4.82 5.83 7.37 8.27 8.92 200yr 7.32 8.58 9.75 10.49 12.03 200yr1 500yr 3.98 6.25 6.24 7.55 9.62 10.63 11.37 500yr 9.41 10.94 12Al 12.96 14.90 500yr1 I of 1 121412022, 1:03 PM