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HomeMy WebLinkAbout02 - Jan 27 2025 - PUBLIC_RedactedRichard Fon John A. Tegeder, R.A. Chairman Director of Planning TOWN OF YORKTOWN PLANNING BOARD Albert. A. Capellini Community and Cultural Center, 1974 Commerce Street, Yorktown Heights, New York 10598, Phone: (914) 962 -6565, Fax: (914) 962-3986 PUBLIC MEETING AGENDA YORKTOWN TOWN HALL BOARD ROOM 363 Underhill Avenue, Yorktown Heights, NY 10598 v Crompond / Croton Heights / Huntersville / Jefferson Valley / Kitchawan / Mohegan Lake / Shrub Oak / Sparkle Lake / Teatown / Yorktown / Yorktown Heights January 27, 2025 7:00 PM 1. Correspondence 2. Meeting Minutes – January 13, 2025 REGULAR SESSION 3. Underhill Farms Public Hearing Location: 48.06-1-30; 370 Underhill Avenue Contact: Site Design Consultants Description: Proposed minor subdivision of site plan approved by Resolution #24-13 dated July 15, 2024. WORK SESSION 4. 401 East Main Street Discussion Site Plan Location: 6.17-1-42 & 44; 401 East Main Street Contact: Hildenbrand Engineering, PLLC, Rich McHale Description: Proposed 24’x30’ office building with associated parking, septic, and stormwater system on a 0.38 acre site in the Country Commercial zone. 5. Jacob Road Solar Discussion Site Plan and Special Use Permit Location: 35.16-1-4; 1805 Jacob Road Contact: Nicholas Vamvas Description: Seeking site plan and special use permit approval to develop a 3.125 megawatt AC solar facility on a 15 acre portion of proposed Lot 4 of the Colangelo Subdivision. 6. ZBA Referral #41/24 Teatown Campus Renovation Location: 69.14-1-5, 7; 1600 Spring Valley Road Contact: DTS Provident Description: Variance request regarding mandatory sprinkler system requirements for a proposed one -story, 5,920 sq. ft education building to be located north of the Teatown Nature Center. 7. ZBA Referral #39/24 Panbar Realty Location: 16.17-4-20, 22; 3301 & 3307 Lookout Street Contact: Panbar Realty Description: Request to combine two lots to create one single lot requiring a variance for a total amount lot area of 10,000 sq. ft where 20,000 sq. ft is required. 8. Town Board Referral Chapter 300 – Tobacco Description: Proposed local law to amend the town zoning code in order to restrict where tobacco and related products may be sold. Last revised: January 24, 2025 Correspondence 1 Ian Richey From:Robyn Steinberg Sent:Friday, January 24, 2025 12:16 PM To:Ian Richey Subject:FW: Planning Board Meeting Agenda - Monday, January 27, 2025 From: Tung, Andrew V. Sent: Friday, January 24, 2025 12:00 PM To: Robyn Steinberg <rsteinberg@yorktownny.gov>; John Tegeder <jtegeder@yorktownny.gov> Cc: Nancy Calicchia <ncalicchia@yorktownny.gov>; Alan Sorkin ; Daniel Riesel ; Eric Bunge ; Amanda Morgan ; Gratz, Mark S. Subject: RE: Planning Board Meeting Agenda - Monday, January 27, 2025 CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hi Robyn and John – on behalf of Teatown, we respectfully request that the discussion of the ZBA referral be moved from the 1/27 PB agenda to its 2/10 agenda. We will be submitting by next Wednesday responses to the Planning Board’s 1/22/25 memo for the members’ review. Please confirm that this is acceptable, and thanks for your consideration. Best, Andy Andrew V. Tung, ASLA, Esq., LEED AP DTS Provident Design Engineering, LLP One North Broadway White Plains, NY 10601 P: (914) 428-0010 | F: (914) 428-0017 www.dtsprovident.com From: Nancy Calicchia <ncalicchia@yorktownny.gov> Sent: Friday, January 24, 2025 11:02 AM To: 'Joseph Riina' <>; Carol Morocco, SD <>; Marissa Schwartz <>; Mark Blanchard ; ; Brian Hildenbrand ; Rich McHale <>; ; Ryan Hutcherson ; 2 David J. Cooper ; Jaclyn Cohen ; ; Tung, Andrew V. ; Cc: John Tegeder <jtegeder@yorktownny.gov>; Robyn Steinberg <rsteinberg@yorktownny.gov>; Ian Richey <irichey@yorktownny.gov> Subject: Planning Board Meeting Agenda - Monday, January 27, 2025 [EXTERNAL] Good morning, Attached is the agenda for the Planning Board meeting to be held on Monday, January 27th. The meeting will be held in the Town Hall boardroom and begin at 7:00PM. Have a nice day. Nancy Nancy Calicchia Town of Yorktown Planning Department Albert A. Capellini Community and Cultural Center 1974 Commerce Street, Room 222 Yorktown Heights, NY 10598 Phone: 914-962-6565 Fax: 914-962-3986 Email: ncalicchia@yorktownny.org Web: http://www.yorktownny.org/planning Minutes Underhill Farms Public Hearing 1 From:JKopstein Sent:Monday, December 23, 2024 8:10 PM Subject:Letter to the Editor CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Underhill Farms As most attendees to the public hearings before the Town and Planning Boards over many years, I thought we were through with additional modifications and changes to the Underhill Farms site plan. However, developer requested changes continue to rain down on the Town and Planning Boards. This equates to a “death by a thousand cuts”. The developer should be told “no more”, “adhere to the approved site plan or the Town and Planning Boards will revoke approvals” and restart the process from scratch. The continuous requested changes demonstrate a discourteous and rude attitude towards these Boards and a disregard of the endless hours that they have already devoted to this project. One has to wonder if the initial plan was just a ruse to gain approval, knowing that the project with the now requested changes would not have been approved. It is time to say NO! Jay Kopstein Sent from my iPhone SSSSSSSSSSSSSSSSSSSSSSSSTHIS IS R0X FOR R01ADVANCE COPYPRINTEDBADEY & WATSONJanuary 9, 2025Surveying & Engineering, D.P.C.__________________________________________________________________JENNIFER W REAP50389STA TE OF NEW YORKLICENSED LAND SURVEYOREXCELSIOR Civil Engineers Land PlannersEngineer: NYS Lic. No. 64431Joseph C. Riina, P.E.251 F Underhill Avenue Yorktown Heights, NY 10598 (914) 962-4488 Fax (914) 962-7386email sdc@cloud9.net SSSSSSSSSSSSSSSSSSSSSSSSTHIS IS R0X FOR R01ADVANCE COPYPRINTEDBADEY & WATSONJanuary 9, 2025Surveying & Engineering, D.P.C.__________________________________________________________________JENNIFER W REAP50389STA TE OF NEW YORKLICENSED LAND SURVEYOREXCELSIOR Civil Engineers Land PlannersEngineer: NYS Lic. No. 64431Joseph C. Riina, P.E.251 F Underhill Avenue Yorktown Heights, NY 10598 (914) 962-4488 Fax (914) 962-7386email sdc@cloud9.net File No. 20-124 Work Order No. 26912 File Name: Document1 Date Created: October 14, 2023 Date Revised: October 14, 2023 Date Printed: October 14, 2023 Figure No. 1110 Author: GJW DESCRIPTION OF EASEMENT prepared for UNDERHILL SOUNDVIEW LLC (New Emergency Access Easement) AN EASEMENT over and upon that certain parcel of land situate in the Town of Yorktown, County of Westchester, and State of New York that is a portion of Lot 1 shown on that certain map entitled “Subdivision of Property prepared for Gilbert Beaver Conference Farm, Inc.…,” which was filed in the Westchester County Clerk’s office on November 21, 1979, as Map No. 20102 that is bounded and described as follows: BEGINNING at the point on the northwesterly line of Underhill Road that occupies coordinate position N 887,672.61 (y) E 688,861.90 (x) of the New York State Coordinate System, East Zone (NAD 83, expressed in U.S. Survey Feet), which point is distant N 61°51'20" E 609.75 feet measured northeasterly along the said northwesterly line of Underhill Road from the point at the intersection the said northwesterly line of Underhill Road and the easterly line of Glen Rock Street, which reference point occupies coordinate position N 887,384.99 (y) E 688,324.25 (x) of the said New York State Coordinate System, East Zone. THENCE from the said point of beginning through said Lot 1, the following, first N 13°00'00" W 48.50 feet then on a tangent curve to the right, the central angle of which is 91°43'00", the radius of which is 77.70 feet for 124.38 feet, then N 78°43'00" E 79.40 feet then on a tangent curve to the left, the central angle of which is 55°59'00", the radius of which is 171.70 feet for 167.77 feet, then on a curve compounding to the left, the center of which bears October 14, 2023 UNDERHILL SOUNDVIEW LLC Page 2 of 3 (New Emergency Access Easement) File U:\20-124B\Descriptions\US13OC23BD_EmergencyAccess.docx Created: October 13, 2023 Last Revised: October 14, 2023 Printed: October 14, 2023 N67°16'00"W, the central angle of which is 19°38'00", the radius of which is 30.00 feet for 10.28 feet, and then the following courses: S 76°49'00" W 16.70 feet, N 13°11'00" W 187.67 feet, N 76°49'00" E 11.50 feet, N 13°11'00" W 56.50 feet, N 01°36'00" W 50.80 feet, and N 13°11'00" W 15.19 feet, to a point on the line dividing said Lot 1, on the south, from Lot 2 on said Filed Map No. 20102, on the north. Thence along the last-mentioned division line N 80°33'00" E 29.46 feet, to a point. Thence once again through said Lot 3, the following, first S 13°11'00" E 39.65 feet then on a tangent curve to the left, the central angle of which is 30°36'00", the radius of which is 5.50 feet for 2.94 feet, then S 43°47'00" E 10.25 feet then on a tangent curve to the right, the central angle of which is 30°36'00", the radius of which is 14.50 feet for 7.74 feet, then S 13°11'00" E 24.50 feet then on a tangent curve to the right, the central angle of which is 30°36'00", the radius of which is 14.50 feet for 7.74 feet, then S 17°25'00" W 10.25 feet then on a tangent curve to the left, the central angle of which is 30°36'00", the radius of which is 5.50 feet for 2.94 feet, then the following courses: S 13°11'00" E 37.25 feet, N 76°49'00" E 18.50 feet, and S 13°11'00" E 158.63 feet then on a tangent curve to the right, the central angle of which is 41°21'00", the radius of which is 85.00 feet for 61.34 feet, then S 28°10'00" W 18.94 feet, and N 60°00'00" W 20.50 feet October 14, 2023 UNDERHILL SOUNDVIEW LLC Page 3 of 3 (New Emergency Access Easement) File U:\20-124B\Descriptions\US13OC23BD_EmergencyAccess.docx Created: October 13, 2023 Last Revised: October 14, 2023 Printed: October 14, 2023 then on a non-tangent curve to the right, the center of which bears N60°00'00"W, the central angle of which is 48°43'00", the radius of which is 202.70 feet for 172.35 feet, then the following courses: S 78°43'00" W 14.60 feet, S 11°17'00" E 18.50 feet, S 78°43'00" W 56.00 feet, N 11°17'00" W 18.50 feet, and S 78°43'00" W 8.80 feet then on a tangent curve to the left, the central angle of which is 91°43'00", the radius of which is 46.70 feet for 74.76 feet, then S 13°00'00" E 31.17 feet and then on a tangent curve to the left, the central angle of which is 26°58'52", the radius of which is 18.50 feet for 8.71 feet, to another point on the northwesterly line of Underhill Road. Thence southwesterly along the said northwesterly line of Underhill Road S 61°51'20" W 34.20 feet to the point or place of beginning of this easement area. N.B. The meridian (North Point) and coordinate values used in the foregoing description refer to the New York State Coordinate System, East Zone, NAD 1983, expressed in U.S. Survey Feet. The meridian is True North at 74°30'00" West Longitude and bears 13°38'40" clockwise from the meridian of Filed Map No. 20102. The distances used in this description are Grid Distances. To obtain Ground Distances divide the Grid Distances by the Combined Scale Factor 0.99992908. The substance of this note should remain with this description in any instrument of which it may become a part. Prepared by BADEY & WATSON Surveying & Engineering, D.P.C. 3063 Route 9 Cold Spring, New York 10516 (845) 265-9217 (voice) (877) 3.141593 www.Badey-Watson.com SSSSSSSSSSSSSSSSSSSSSSSSTHIS IS R0X FOR R01ADVANCE COPYPRINTEDBADEY & WATSONJanuary 9, 2025Surveying & Engineering, D.P.C.__________________________________________________________________JENNIFER W REAP50389STA TE OF NEW YORKLICENSED LAND SURVEYOREXCELSIOR Civil Engineers Land PlannersEngineer: NYS Lic. No. 64431Joseph C. Riina, P.E.251 F Underhill Avenue Yorktown Heights, NY 10598 (914) 962-4488 Fax (914) 962-7386email sdc@cloud9.net 401 East Main Street January 23, 2025 Brian Hildenbrand, P.E. Hildenbrand Engineering, PLLC 208 Creamery Road Hopewell Junction, NY 12533 Subject: 401 East Main Street 401 East Main Street 6.14-1-42 & 44 Dear Mr. Hildenbrand, As stated in the attached Planning Board letter dated November 22, 2024, the Board requested that test holes for the septic and infiltrators be shown, the swale and drainage on the southeastern corner of the property be shown, and the DOH septic approval and signed plans be submitted. Please also indicate a drop curb or apron where the parking lot transitions to the garage. Be advised that the stormwater plan is subject to review by the Town Engineer and may require further revisions. Please do not hesitate to contact this office should you have any questions. Sincerely, Ian Richey Assistant Planner November 22, 2024 Brian Hildenbrand, P.E. Hildenbrand Engineering, PLLC 208 Creamery Road Hopewell Junction, NY 12533 Subject: 401 East Main Street 6.14-1-42 & 44 Dear Mr. Hildenbrand, At its meeting on November 18, 2024, the Planning Board reviewed the subject project. The Board has requested that the site plan show the drainage and swale on the adjacent property to the southeast as well as the flood zone boundary. Please also provide the locations of any test pits relating to the infiltrators and the septic. The Department of Health septic approval and signed plans should also be submitted. Be advised that the storm water plan is subject to review by the Town Engineer and may require further revisions. Please do not hesitate to contact this office should you have any questions. Sincerely, Ian Richey Assistant Planner cc: Applicant REMOVAL OF EXISTING DRAINPIPES TO BE COORDINATEDWITH THE TOWNTRENCH BACKFILLED WITHRUN OF BANK MATERIALEXISTING ASPHALT TO BEREMOVED (5,581 SF ±)UNDER NEW YORK STATE EDUCATION LAW ARTICLE 145 (ENGINEERING),SECTION 7209 (2), IT IS A VIOLATION OF THIS LAW FOR ANY PERSON, UNLESSACTING UNDER THE DIRECTION OF A LICENSED PROFESSIONAL ENGINEER, TOALTER THIS DOCUMENT© HILDENBRAND ENGINEERING, PLLCTITLE:NO.REVISIONDATEScale:Sheet No.:Date:Drawn By:Checked By:Project No.:SealDwg. No.:Site Data SITE ADDRESS:401 E MAIN STREETYORKTOWN, NY 10535LOT SIZE:0.38 ACTAX MAP:6.14-1-44 & 42ZONING DISTRICT:CC DISTRICT Owner 401 EAST MAIN STREET, LLC5 MADONNA DRIVELAGRANGEVILLE, NY 12540401 E MAIN STREETTOWN OF YORKTOWNWESTCHESTER COUNTY, NEW YORKHILDENBRAND ENGINEERING, PLLC208 CREAMERY ROADHOPEWELL JUNCTION, NY845.206.6994Brian@HildenEng.com1" = 10'06-27-20241REVISED PER PB SITE WALK9/27/242REVISED PER TOWN COMMENTS10/31/243REVISED PER TOWN COMMENTS1/24/251 of 4EXISTING CONDITIONS &REMOVALS PLAN1" = 10'SP-1MAP NOTES:1.THIS IS NOT A PROPERTY SURVEY.2.SURVEY INFORMATION SHOWN HEREON IS BASED FROM SURVEYPERFORMED BY RONALD PERSAUD, L.S. DATED NOVEMBER 30,2021DEMOLITION NOTES:1.The contractor shall notify the Town Building Department’s office a minimum of 48 hours before commencing site demolition and/orconstruction activities.2.It is the contractor’s responsibility to call in a "Code 53" at least 2 days but no more than 10 days prior to demolition/construction forunderground utility locations.3.Prior to demolition of any structure, the owner shall provide documentation from the respective utility owners verifying the dates of disconnectfor the gas, electric, water and sewer services as applicable to each structure.4.Prior to demolition of any structure, the owner shall provide an asbestos removal certification demonstrating compliance with New York StateIndustrial Code Rule 56 - Asbestos, as applicable to each structure, as performed by a NYS licensed asbestos inspector.5.Any asbestos containing materials shall be removed and managed by a qualified asbestos abatement contractor in accordance withregulations specified in 12 NYCRR Part 56 and USEPA Region 2 Guidance, latest edition.6.The contractor is responsible for maintaining a clean and safe work area in accordance with all applicable local, state and federal regulations.7.The contractor is responsible for cleaning all tracked soil and debris from within the right-of-way on a daily basis at a minimum or as directedby the engineer or town officials.8.Any service to be disconnected shall be cut and capped at the main in accordance with the standards and specifications of the respectiveutility company.9.Building demolition shall include, but not be limited to, all structural components, roofing, siding, concrete and/or block walls, windows anddoors, interior partitions, floor slabs and foundations, pavements, interior and exterior lighting, all associated underground and overheadutilities, and all existing features identified on the plan.10.The contractor is responsible for proper off-site disposal of all demolition debris.11.The contractor shall provide all necessary shoring and temporary supports as may be required to protect existing underground utilities andadjacent structures.GENERAL NOTES:1.The contractor shall be responsible for the restoration of the existing features disturbedby the construction of this contract to existing condition or better, as determined by theengineer.2.The engineer whose seal appears hereon is not responsible for construction means andmethods and, therefore, assumes no responsibility for construction practices, procedures,and results therefrom.3.The engineer shall not be held responsible or held accountable for the integrity of anystructures constructed or under construction prior to the approval of the plans.4.The Town Engineer’s office is to be notified 48 hours before commencing siteconstruction.5.All work is to be completed in accordance with the Town’s code of practice andspecifications.6.All conditions, locations, and dimensions shall be field verified and the engineer shall beimmediately notified of any discrepancies.7.All changes made to the plans shall be approved by the engineer and any such changesshall be filed as amendments to the original building permit.8.See plans prepared by the Architect for all building and structural drawings, details andnotes.9.The contractor shall work this plan in coordination with those plans prepared by others forimprovements related to architecture, structural, MEP, etc. Any discrepancies shall bebrought to the attention of the engineer.10.All written dimensions on the drawings shall take precedence over any scaleddimensions.11.It is the contractor’s responsibility to call in a "Code 53" at least 2 days but no more than10 days prior to construction for underground utility locations.12.Substructures and their encroachments below grade, if any, are not shown.13.Contractor to verify all substructures encountered during construction.14.Any proposed electric and/or telephone service lines are to be placed underground.15.The contractor shall supervise and direct the work using his best skill and attention. Heshall be solely responsible for all construction means, methods, techniques, sequences,and procedures and for coordinating all portions of the work under the contract.16.The contractor shall be responsible to the owner for the acts and omissions of hisemployees, subcontractors, and their agents and employees, and any other personsperforming any of the work under a contract with the contractor.17.The design engineer disclaims any liability for damage or loss incurred during or afterconstruction.feet4020010LOCATION MAPSCALE: N.T.S.SITEFEMA FLOODPLAIN PROPOSEDOFFICE BUILDING24' x 30'(2-story)FFE 432.0SIDEWALKPROPOSED SEPTIC LOCATION9'x18.5' PARKING SPACE (TYP.)SHED ROOF OVER ENTRANCEPROPOSED SIDEWALK(TYP.)4 TREES TO BE REMOVEDPROPOSED ASPHALTPARKING LOTLANDSCAPED RAIN GARDEN(5) ARBOVITAESTHUJA OCCIDENTALSCULTIVAR (GOLD)(6) ARBOVITAESTHUJA OCCIDENTALSCULTIVAR (GREEN)(3) WHITE PINESPINUS STROBUSSTORAGE UNIT DISPLAY AREA,GRAVEL PADWALL MOUNTED LIGHTFIXTURE(TYP.)CLEAR ANY DEBRISFROM STREAMCHANNELNEW FENCE ALONG THE REARPROPERTY LINE+ 430.5+ 430.5430.5 ++ 430.578.00'27.50'UNDER NEW YORK STATE EDUCATION LAW ARTICLE 145 (ENGINEERING),SECTION 7209 (2), IT IS A VIOLATION OF THIS LAW FOR ANY PERSON, UNLESSACTING UNDER THE DIRECTION OF A LICENSED PROFESSIONAL ENGINEER, TOALTER THIS DOCUMENT© HILDENBRAND ENGINEERING, PLLCTITLE:NO.REVISIONDATEScale:Sheet No.:Date:Drawn By:Checked By:Project No.:SealDwg. No.:Site Data SITE ADDRESS:401 E MAIN STREETYORKTOWN, NY 10535LOT SIZE:0.38 ACTAX MAP:6.14-1-44 & 42ZONING DISTRICT:CC DISTRICT Owner 401 EAST MAIN STREET, LLC5 MADONNA DRIVELAGRANGEVILLE, NY 12540401 E MAIN STREETTOWN OF YORKTOWNWESTCHESTER COUNTY, NEW YORKHILDENBRAND ENGINEERING, PLLC208 CREAMERY ROADHOPEWELL JUNCTION, NY845.206.6994Brian@HildenEng.com1" = 10'06-27-20241REVISED PER PB SITE WALK9/27/242REVISED PER TOWN COMMENTS10/31/243REVISED PER TOWN COMMENTS1/24/25feet40200102 of 4PROPOSED 2' CONTOURLEGEND:SITE PLAN1" = 10'SP-2TOWN OF YORKTOWN ZONING REQUIREMENTS (COUNTRY COMMERCIAL DISTRICT)EXISTINGREQUIREDCCPROPOSEDFEMA FLOODPLAIN PROPOSEDOFFICE BUILDING24' x 30'(2-story)FFE 432.0SIDEWALK DT 1PT-1DT 2PT-2DT 4DT 3PT-3WSWSWSWSEEEEESEPTIC COMPRISED OF H-20RATED CHAMBERSPROPOSED LIMIT OFDISTURBANCE15,700 SFPROPOSED 12"Ø HDPE TOREROUTE EXISTINGPROPOSED DRAIN INLETRIM: 429.8INV: 426.8PROPOSED WATER,ELECTRIC AND GAS SERVICECONNECTIONSSF SF SF SF SFSFSFSFSFSFSFSFSFSFSILT FENCE DOWNGRADE OFALL DISTURBANCESTABILIZED CONSTRUCTIONENTRANCEPROPOSED DRAIN INLETRIM: 429.5INV: 426.7PROPOSED CULTECINFILTRATION SYSTEM9 CULTEC 330 CHAMBERSBOTTOM: 425.5POP-UP OVERFLOW: 430.0PROPOSED ROOF DRAINDISCHARGE TO STONEOUTLET IN RAIN GARDENPROPOSED DRAINAGEMANHOLE, SOLID COVER(TYP.)PROPOSED MANHOLE TOCONNECT TO EXISTINGDRAINAGE PIPES, MATCHINVERTPROPOSED RAIN GARDENWITH 4" UNDERDRAIN,CONNECT OVERFLOW TOCATCH BASINCONCRETE WASHOUTLOCATION IF NEEDEDSOIL STOCKPILE (TYP.)+ 430.5+ 430.5430.5 ++ 430.578.00'27.50'FEMA 100-YR FLOODPLAINZONE X166 SF RAIN GARDENOUTLET GRATE EL: 431.5EXISTING HDPE PIPE THATDISCHARGES TO EXISTINGOFF-SITE DITCHEXISTINGOFF-SITE DITCHfeet4020010UNDER NEW YORK STATE EDUCATION LAW ARTICLE 145 (ENGINEERING),SECTION 7209 (2), IT IS A VIOLATION OF THIS LAW FOR ANY PERSON, UNLESSACTING UNDER THE DIRECTION OF A LICENSED PROFESSIONAL ENGINEER, TOALTER THIS DOCUMENT© HILDENBRAND ENGINEERING, PLLCTITLE:NO.REVISIONDATEScale:Sheet No.:Date:Drawn By:Checked By:Project No.:SealDwg. No.:Site Data SITE ADDRESS:401 E MAIN STREETYORKTOWN, NY 10535LOT SIZE:0.38 ACTAX MAP:6.14-1-44 & 42ZONING DISTRICT:CC DISTRICT Owner 401 EAST MAIN STREET, LLC5 MADONNA DRIVELAGRANGEVILLE, NY 12540401 E MAIN STREETTOWN OF YORKTOWNWESTCHESTER COUNTY, NEW YORKHILDENBRAND ENGINEERING, PLLC208 CREAMERY ROADHOPEWELL JUNCTION, NY845.206.6994Brian@HildenEng.com1" = 10'06-27-20241REVISED PER PB SITE WALK9/27/242REVISED PER TOWN COMMENTS10/31/243REVISED PER TOWN COMMENTS1/24/253 of 4PROPOSED 2' CONTOURLEGEND:GRADING, UTILITY & EROSIONCONTROL PLAN1" = 10'SP-3LIMIT OF DISTURBANCESILT FENCESFGENERAL UTILITY NOTES:1.Electric, gas, telephone/data services shown on this plan are schematic for coordination purposes only. The contractor isrequired to coordinate installation and specifications with design drawings and details by others and the respective utility owner.2.It is the contractor’s responsibility to call in a "Code 53" a minimum of 2 days but not more than 10 days prior to any excavationor construction of underground utilities.3.All utilities, including electric lines, telephone, cable, water, sanitary sewer lines, and storm sewer lines shall be locatedunderground and shall be installed in accordance with the requirements of the town and the utility companies having jurisdiction.4.Any proposed electric and/or telephone service lines are to be placed underground and shall be encased in rigid casing for aminimum of 6 feet (2-4-2) across all water mains.5.Roof leaders shall empty into storm drainage systems. The elevation of footings shall be adjusted accordingly to permit properdrainage. Under no circumstances shall the discharge or ground water or storm water, either by gravity or by pumping, bedischarged to any sanitary sewer system.6.Storm drain piping to be high density polyethylene as shown on the construction drawings. Minimum cover to be 2 feet unlessotherwise noted.7.Prior to final approval and operation of the drainage system, the contractor shall clear all accumulated sediment and/or debrisfrom drainage structures, manholes, culverts, outlets and drain inlets. The engineer shall be notified for final inspection.8.It is the contractor’s responsibility to properly shore existing utilities and existing improvements as required by construction.FEMA FLOODPLAINO.W.T.S. FIELD TESTING INFORMATIONDEEP TEST HOLE DESCRIPTIONPERCOLATIONRATE (MIN/IN)DT 3PT-3DEEP AND PERCOLATION TESTS UNDER NEW YORK STATE EDUCATION LAW ARTICLE 145 (ENGINEERING),SECTION 7209 (2), IT IS A VIOLATION OF THIS LAW FOR ANY PERSON, UNLESSACTING UNDER THE DIRECTION OF A LICENSED PROFESSIONAL ENGINEER, TOALTER THIS DOCUMENT© HILDENBRAND ENGINEERING, PLLCTITLE:NO.REVISIONDATEScale:Sheet No.:Date:Drawn By:Checked By:Project No.:SealDwg. No.:Site Data SITE ADDRESS:401 E MAIN STREETYORKTOWN, NY 10535LOT SIZE:0.38 ACTAX MAP:6.14-1-44 & 42ZONING DISTRICT:CC DISTRICT Owner 401 EAST MAIN STREET, LLC5 MADONNA DRIVELAGRANGEVILLE, NY 12540401 E MAIN STREETTOWN OF YORKTOWNWESTCHESTER COUNTY, NEW YORKHILDENBRAND ENGINEERING, PLLC208 CREAMERY ROADHOPEWELL JUNCTION, NY845.206.6994Brian@HildenEng.com1" = 10'06-27-20241REVISED PER PB SITE WALK9/27/242REVISED PER TOWN COMMENTS10/31/243REVISED PER TOWN COMMENTS1/24/254 of 4LEGEND:DETAILS1" = 10'D-1INSTALLATION NOTES:SILT FENCE DETAILSCALE: N.T.S.SOIL STOCKPILE DETAILSCALE: N.T.S.DRAINAGE TRENCH DETAILSCALE: N.T.S.DRAIN INLETSCALE: N.T.S.CONCRETE WASHOUT DETAILSCALE: N.T.S.CONCRETE SIDEWALK AND CURB DETAILSCALE: N.T.S.CONSTRUCTION SPECIFICATIONSPLAN VIEWPROFILESTABILIZED CONSTRUCTION ENTRANCESCALE: N.T.S.CULTEC 330 CHAMBER DETAILSCALE: N.T.S.DRAIN MANHOLE DETAILSCALE: N.T.S.NOTES:1.PLANTING SOIL MEDIA SHOULD CONSIST IF 50%-70% SAND (LESS THAN 5% CLAY CONTENT),50%-30% TOPSOIL WITH AN AVERAGE OF 5% ORGANIC MATTER (COMPOST OR PEAT).2.THE PLANTING SOIL MEDIA SOIL SHOULD BE A UNIFORM MIX, FREE OF STONES, STUMPS, ROOTSAND OTHER OBJECTS LARGER THAN 2 INCHES IN DIAMETER. THE SOIL SHOULD BE VISIBLY FREEOF NOXIOUS WEEDS.3.THE SOIL SHOULD HAVE A pH RANGE OF 5.2 TO 7.0 AND AN ORGANIC CONTENT OF 1.5%-4.0%4.THE MULCH LAYER SHOULD BE STANDARD LANDSCAPE STYLE, SINGLE OR DOUBLE, SHREDDEDHARDWOOD MULCH OR CHIPS. THE MULCH LAYER SHOULD BE WELL AGED (STOCKPILED ORSTORED FOR AT LEAST 12 MONTHS). THE MULCH LAYER SHOULD BE UNIFORM IN COLOR ANDFREE OF WEED SEEDS, SOIL, ROOTS, GRASS CLIPPINGS, ETC.6" MAX WQv312" - 3" MULCH18'' PLANTING SOIL MEDIA30% VOIDSFILTER FABRIC (MIRAFI 140NOR APPROVED EQUAL)1.5" - 2" CLEAN CRUSHEDSTONE DRAINAGE LAYER12" DEPTH - 40% VOIDSPROPOSED PLANTINGS(SEE LANDSCAPING CHART)FINISHED GRADERAIN GARDEN DETAILSCALE: N.T.S.4"Ø UNDERDRAIN Stormwater Pollution Prevention Plan 401 East Main Street, LLC 401 East Main Street Town of Yorktown December 31, 2024 208 Creamery Road Hopewell Junction, NY 12533 www.Hilden-Eng.com Stormwater Report 401 E Main Street Table of Contents i 1 Executive Summary .................................................................................... 1 2 Project Description ...................................................................................... 1 2.1 Pre-Development Conditions ............................................................................. 1 2.2 Post-Development Conditions ........................................................................... 1 2.3 Soil Survey Data .................................................................................................. 2 3 Construction Sequencing ............................................................................ 2 4 Erosion and Sediment Control Plan ........................................................... 3 4.1 Erosion and Sediment Control Measures .......................................................... 3 4.2 Pollution Prevention Controls ............................................................................ 5 4.3 Soil Restoration .................................................................................................. 6 5 Stormwater Management Plan ................................................................... 7 5.1 Hydrologic Analysis ........................................................................................... 7 5.1.1 Rainfall Data .............................................................................................................. 8 5.1.2 Unified Stormwater Sizing Criteria ......................................................................... 8 5.1.2.1 Water Quantity Control ............................................................................ 8 5.1.3 Comparison of Peak Discharge Rates .................................................................... 8 5.1.3.1 Water Quality Treatment .......................................................................... 9 6 Post Construction Requirements ................................................................ 9 6.1 Inspection and Maintenance .............................................................................. 9 7 Conclusion ................................................................................................. 11 Appendices A Pre-Development HydroCAD Analysis B Post-Development HydroCAD Analysis C Water Quality & Rain Garden Sizing Calculations D Soil Report E Rainfall Data Stormwater Report 401 E Main Street 1 1 Executive Summary This Stormwater Pollution Prevention Plan (SWPPP) and accompanying project plans have been prepared for the construction activities associated with 401 East Main Street located in the Town of Yorktown, New York. The stormwater management, pollution prevention, and erosion and sediment control measures identified and detailed in this SWPPP and on the accompanying project plans have been designed in accordance with the requirements of the Town of Yorktown and the New York State Department of Environmental Conservation (NYSDEC) State Pollutant Discharge Elimination System (SPDES) Phase II technical standards. The proposed project: 1. Maintains the existing drainage patterns, as much as possible. 2. Controls increases in the rate of stormwater runoff resulting from the proposed development without adversely affecting adjacent or downstream properties or receiving watercourses or bodies. 3. Reducing potential stormwater quality impacts and soil erosion resulting from stormwater runoff generated both during and after construction. The pre- and post-development stormwater runoff conditions have been reviewed and evaluated. The proposed stormwater management facilities have been designed to provide both water quality and quantity controls. Stormwater runoff will be detained, treated, and released at a rate equal to or less than that which existed prior to development of the project site. 2 Project Description 410 East Main Street, LLC owns the property. The subject lot is 0.38 acres and located on the south side of East Main Street. The property is located in the Country Commercial Zoning District. The project site was previously a restaurant and bar. This establishment was demolished several years ago. The site is currently vacant. It is proposed to build a small office building, a 12-stall parking lot, drainage improvements and septic system. 2.1 Pre-Development Conditions The site is currently undeveloped. There are remains of the parking area, construction & demolition debris. The site was never stabilized after the demolition, no topsoil appears to cover the site. 2.2 Post-Development Conditions The proposal includes the construction of a small office building, a 12-stall parking lot, drainage improvements and septic system.. Roof runoff will be treated in a rain garden. The parking lot will be collect in catch basins and treated in an underground infiltration system. Stormwater Report 401 E Main Street 2 2.3 Soil Survey Data The United States Department of Agriculture (USDA) Soil Conservation Service Soil Survey for Putnam County was reviewed. The soil data for each of the soil types is summarized in Table 1 below. Table 1: USDA Soil Data Map Symbol Description Hydrologic Soil Group ChC Charlton fine sandy loam, 3-15% B Uc Udorthents D The Soil Conservation Service defines the hydrologic soil groups as follows: • Type A Soils: Soils having a high infiltration rate and low runoff potential when thoroughly wet. These soils consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. • Type B Soils: Soils having a moderate infiltration rate when thoroughly wet and consists mainly of moderately deep to deep, moderately well to well drained soils with moderately fine to moderately course textures. These soils have a moderate rate of water transmission. • Type C Soils: Soils having a low infiltration rate when thoroughly wet and consists chiefly of soils with a layer that impedes downward movement of water and soils with moderately fine- to-fine texture. These soils have a low rate of water transmission. • Type D Soils: Soils having a very low infiltration rate and high runoff potential when thoroughly wet. These soils consist chiefly of clays that have high shrink-swell potential, soils that have a permanent high water table, soils that have a clay pan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very low rate of water transmission. 3 Construction Sequencing The total disturbance of the proposed project is 0.38 acres. The proposed project will be completed in a single phase. The construction sequencing is outlined on the accompanying plans and is provided below. The construction sequencing is as follows: Stormwater Report 401 E Main Street 3 1. The Contractor shall flag the limits of disturbance prior to the commencement of construction. Bright orange construction fencing shall be used to demarcate the limits of disturbance to ensure over clearing does not occur. 2. Remove trees, stumps, and vegetation within the disturbance limits in accordance with the project plans. All stumps shall be stockpiled for removal from site. Stump burial is prohibited 3. All temporary erosion and sediment control measures (e.g., stabilized construction entrances, silt fencing, etc.) shall be installed as shown on the project plans. Temporary erosion and sediment control measures shall be constructed, stabilized, and functional before site disturbance begins within their tributary areas. 4. Stabilized Entrance will be used as a haul road for site development. 5. Stake out the locations of the limits of disturbance, proposed stormwater management facilities, and improvements (e.g., house, septic, etc.). 6. Rough grade the site. Place surplus material in the temporary soil stockpile locations shown on the project plans. 7. Construct the building foundation. 8. Construct all site utilities and utility service connections as shown on the project plans. This includes the stormwater mitigation systems. 9. Finish grading and stabilize all disturbed areas. All erosion and sediment control measures must be left in place to prevent sediment from entering the treatment practices. The Contractor shall clean all catch basins, manholes, and drainage lines of any accumulated silt and sediment prior to finalizing the swale area. 10. Remove all temporary erosion and sediment control measures. Immediately stabilize the areas disturbed during their removal. Establish permanent vegetative cover and install all landscaping and wetland mitigation plantings. 4 Erosion and Sediment Control Plan This SWPPP and accompanying project plans identify both temporary and permanent erosion and sediment control measures, which have been designed in accordance with the New York State Standards and Specifications for Erosion and Sediment Control, latest revision. Temporary erosion and sediment control measures will be implemented during construction to minimize soil erosion and control sediment transport off-site. Permanent erosion and sediment control measures will be implemented after construction to control the quality and quantity of stormwater runoff from the developed site. 4.1 Erosion and Sediment Control Measures Temporary erosion and sediment control measures to be utilized during construction generally include the following: Stormwater Report 401 E Main Street 4 1. Stabilized Construction Entrance - Prior to construction, stabilized construction entrances shall be installed to reduce the tracking of sediment onto public roadways. Construction traffic must enter and exit the site at the stabilized construction entrance. The entrance shall be maintained in good condition, which will control tracking of sediment onto public rights-of- way or streets. When necessary, the placement of additional aggregate atop the filter fabric shall be done to assure the minimum thickness is maintained. All sediments and soils spilled, dropped, or washed onto the public rights-of-way must be removed immediately. Periodic inspection and needed maintenance shall be provided after each substantial rainfall event. 2. Dust Control - Water trucks shall be used, as needed, during construction to reduce dust generated on the site. Dust control must be provided by the general contractor to a degree that is acceptable to the owner/operator, and in compliance with the applicable local and state dust control requirements. 3. Temporary Soil Stockpile - Materials, such as topsoil, shall be temporarily stockpiled (if necessary) on the site during the construction process. Stockpiles shall be located in an area away from storm drainage, water bodies and/or courses, and shall be properly protected from erosion by a surrounding silt fence barrier or hay bales when located on paved areas. 4. Silt Fencing - Prior to the initiation of and during construction activities, silt fencing shall be established along the perimeter of all areas to be disturbed as a result of the construction which lie up gradient of water courses or adjacent properties. These barriers may extend into non- impact areas to ensure adequate protection of adjacent lands. Clearing and grubbing shall be performed only as necessary for the installation of the sediment control barrier. To ensure effectiveness of the silt fencing, daily inspections and inspections immediately after significant storm events shall be performed by site personnel. Maintenance of the fence shall be performed as needed. 5. Temporary Seeding - Within seven days after construction activity ceases on any particular area of the site, all disturbed areas where there shall not be construction for longer than 14 days shall be temporarily seeded and mulched to minimize erosion and sediment loss. 6. Temporary Sediment Basin – A temporary sediment basin shall be constructed to intercept sediment laden runoff, reduce the amount of sediment leaving the disturbed areas, and protect drainage ways, properties, and rights-of-way. Projects that have proposed stormwater ponds can be used as temporary sediment basins during construction. Temporary sediment basins shall be inspected at least every seven calendar days. All damages caused by soil erosion and construction equipment shall be repaired upon discovery. Accumulated sediment shall be removed from the sediment basin/trap when it reaches 50 percent of the design capacity and shall not exceed 50 percent. Sediment shall not be placed downstream from the embankment, adjacent to a stream, or floodplain. 7. Dewatering - Dewatering, if required, shall not be discharged directly into wetlands, water courses, water bodies, and storm sewer systems. Proper methods and devices shall be utilized to the extent permitted by law, such as pumping water into temporary sediment basins, providing surge protection at the inlet and outlet of pumps, floating the intake of the pump, or other methods to minimize and retain the suspended solids. Stormwater Report 401 E Main Street 5 Permanent erosion and sediment control measures to be utilized after construction generally include the following: 1. Establishment of Permanent Vegetation - Disturbed areas that are not covered by impervious surfaces shall be seeded in accordance with the accompanying plans. The type of seed, mulch, and maintenance measures shall be followed. All areas at final grade shall be seeded and mulched within seven (7) days after completion of the major construction activity. All seeded areas shall be protected with mulch and/or hay. Final site stabilization is achieved when all soil-disturbing activities at the site has been completed and a uniform, perennial vegetative cover with a density of 80 percent has been established or equivalent stabilization measures (such as the use of mulches or geotextiles) have been employed on all unpaved areas and areas not covered by permanent structures. 2. Final Seeding and Planting - Final seeding and planting shall be installed as shown on the accompanying plans. Final seeding and planting will help minimize erosion and sediment loss. Specific erosion and sediment control measures, inspection frequency, and remediation procedures are provided in the subsequent sections and on the accompanying project plans. 4.2 Pollution Prevention Controls Good housekeeping practices are designed to maintain a clean and orderly work environment. Good housekeeping measures shall be maintained throughout the construction process by those parties involved with the direct care and development of the site. The following measures should be implemented to control the possible exposure of harmful substances and materials to stormwater runoff: 1. Material resulting from the clearing and grubbing operation shall be stockpiled away from storm drainage, water bodies and/or watercourses and surrounded with adequate erosion and sediment control measures. Soil stockpile locations shall be exposed no longer than 14 days before seeding. 2. Equipment maintenance areas shall be protected from stormwater flows and shall be supplied with appropriate waste receptacles for spent chemicals, solvents, oils, greases, gasoline, and any pollutants that might contaminate the surrounding habitat and/or water supply. Equipment wash-down zones shall be located within areas draining to sediment control devices. 3. The use of detergents for large-scale (i.e., vehicles, buildings, pavement surfaces, etc.) washing is prohibited. 4. Material storage locations and facilities (i.e., covered storage areas, storage sheds, etc.) shall be located onsite and shall be stored according to the manufacturer’s standards in a dedicated staging area. Chemicals, paints, solvents, fertilizers, and other toxic material must be stored in waterproof containers. Runoff containing such materials must be collected, removed from the site, treated and disposed at an approved solid waste or chemical disposal facility. Stormwater Report 401 E Main Street 6 5. Hazardous spills shall be immediately contained to prevent pollutants from entering the surrounding habitat and/or water supply. Spill Kits shall be provided onsite and shall be displayed in a prominent location for ease of access and use. Spills greater than five (5) gallons shall be reported to the NYSDEC Response Unit at 1-800-457-7362. In addition, a record of the incident(s) and/or notifications shall be documented and attached to the SWPPP. 6. Portable sanitary waste facilities shall be provided onsite for workers and shall be properly maintained. 7. Dumpsters and/or debris containers shall be located onsite and shall be of adequate size to manage respective materials. Regular collection and disposal of wastes shall occur as required. 8. Temporary concrete washout facilities should be located a minimum of 50 feet from storm drain inlets, open drainage facilities, and watercourses. Each facility should be located away from construction traffic or access areas to prevent disturbance or tracking. A sign should be installed adjacent to each washout facility to inform concrete equipment operators to utilize the proper facilities. When temporary concrete washout facilities are no longer required for the work, the hardened concrete shall be removed and disposed of. Materials used to construct the temporary concrete washout facilities shall be removed and disposed of. Holes, depressions or other ground disturbance caused by the removal of the temporary concrete washout facilities shall be backfilled and/or repaired, seeded, and mulched for final stabilization. 9. Non-stormwater 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 Health Department. Water used for construction that does not originate from an approved public supply must not discharge from the site. It can be retained in the ponds until it infiltrates and evaporates. 4.3 Soil Restoration The soils within in the limits of disturbance are Type A soils. In accordance with Table 5.3 of the New York State Stormwater Management Design Manual, the soils shall be restored as outlined in Table 2 below: Table 2: Soil Restoration Type of Soil Disturbance Soil Restoration Requirement Comment No soil disturbance (preservation of natural features) Restoration not permitted Protect from any ongoing construction activity Minimal soil disturbance Restoration not permitted Clearing and grubbing activities Areas where topsoil is stripped only (no change in grade) Apply 6” of topsoil Protect from any ongoing construction activity Stormwater Report 401 E Main Street 7 Type of Soil Disturbance Soil Restoration Requirement Comment Areas of cut or fill Aerate and apply 6” of topsoil Aeration includes the use of machines such as tractor-drawn implements with coulters making a narrow slit in the soils, a roller with many spikes making indentations in the soil, or prongs with function like a mini-subsoiler. Heavy traffic areas on site (especially in a zone 5-25’ around buildings but not within a 5’ perimeter around foundation walls) Apply full soil restoration (de- compaction and compost enhancement) Deep rip the affected thickness of the exposed subsoil material, aggressively fracturing it before the protected topsoil is reapplied on site. De- compact simultaneously through the restored topsoil layer and the upper half of the affected subsoil. Areas where runoff reduction and/or infiltration practices are applied Restoration not required, but may be applied to enhance the reduction specified for appropriate practices. Protect from any ongoing construction activity During periods of relatively low to moderate subsoil moisture, the disturbed soils are returned to rough grade and the following soil restoration steps are applied: 1. Apply 3-inches of compost over subsoil. 2. Till compost into subsoil to a depth of at least 12” using a cat-mounted ripper, tractor- mounted disc, or tiller, mixing and circulating air and compost into subsoils. 3. Rock-pick until uplifted stone/rock materials of 4-inches and larger size are cleaned off the site. 4. Apply topsoil to a depth of 6-inches. 5. Vegetate as required by the project plans. 5 Stormwater Management Plan The goals of this Stormwater Management Plan are to: 1. Analyze the peak rate of runoff under pre- and post-development conditions. 2. Maintain the pre-development rate of runoff in order to minimize impacts to adjacent or downstream properties. 3. Minimize the impact of the quality of runoff exiting the site. These objectives will be met by applying Green Infrastructure Practices and Best Management Practices (BMPs). Stormwater runoff from the proposed project will be collected and conveyed to the proposed stormwater management facilities. Stormwater runoff will be detained, treated, and released at a rate equal to or less than that which existed prior to development of the project site. 5.1 Hydrologic Analysis Stormwater Report 401 E Main Street 8 The study area was made up of one subcatchment for pre-development conditions and post- development conditions. This was dictated by watershed conditions, methods of collection, conveyance, and points of discharge. Watershed delineations were defined using the surveyed site topography. HydroCAD, a Computer-Aided-Design (CAD) program, was used to analyze the hydrologic characteristics of the pre-development watershed conditions, post-development watershed conditions, and proposed stormwater management systems. HydroCAD has the capability of computing hydrographs (which represents discharge rates characteristic of specified watershed conditions, precipitation, and geologic factors), combining hydrographs, and routing flows though pipes, streams, channels, and ponds. 5.1.1 Rainfall Data Rainfall data utilized in the modeling and analysis was obtained from National Weather Service (NWS) Technical Paper 40 (TP-40), Rainfall Frequency Atlas of the U.S. Weather Bureau, published by the U.S. Department of Commerce. A Type III rainfall distribution was used to evaluate the pre- and post-development stormwater runoff conditions for the 1-, 10-, and 100-year 24-hour storm events for Dutchess County. Rainfall data specific to the portion of Westchester County under consideration is provided in Table 3 below. Table 3: Rainfall Data Storm Event 24-Hour Rainfall 1-year 2.75 inches 10-year 5.04 inches 100-year 9.11 inches 5.1.2 Unified Stormwater Sizing Criteria 5.1.2.1 Water Quantity Control 5.1.3 Comparison of Peak Discharge Rates A comparison of the pre- and post-development peak discharge rates is provided in Table 9 below. Table 4: Comparison of Pre- & Post-Development Peak Discharge Rates-Design Line #1 Storm Event Pre (cfs) Post (cfs) Difference 1-year 0.60 0.03 -95% 10-year 1.41 0.32 -77% 100-year 2.83 2.18 -24% Stormwater Report 401 E Main Street 9 Table 5: Comparison of Pre-& Post-Development Peak Discharge Volumes- Design Line #1 Storm Event Pre (Cu-Ft) Post (Cu-Ft) Difference 1-year 2,168 240 -88% 10-year 5,132 1,287 -75% 100-year 10,725 5,140 -52% Comparison of the peak discharge rates for pre- and post-development watershed conditions demonstrates that the peak rate of runoff from the proposed development will remain the nearly the same or not be increased. Therefore, the proposed development will not adversely impact the downstream or adjacent properties, receiving water bodies or courses, or wetlands. The results of the computer modeling used to analyze the pre- and post-development watershed conditions are presented in Appendix A and Appendix B, respectively. 5.1.3.1 Water Quality Treatment The Water Quality Volume (WQv) for this site is equal to the 90th percentile storm. The WQv will be completely treated in rain garden . See Appendix C for WQv calculations. 6 Post Construction Requirements 6.1 Inspection and Maintenance Post-construction inspections and maintenance shall be performed by the homeowner. Inspections and maintenance for the various site components and stormwater management facilities shall be performed in accordance with the accompanying project plans and this SWPPP. A summary of the general site inspection and maintenance parameters is provided in Table 10 below. A summary of the stormwater management system inspection and maintenance parameters is provided in Table 11 below. Stormwater Report 401 E Main Street 10 Table 7: General Site Post-Construction Inspection and Maintenance Description of Remedy Procedures -Remove -Remove -Replace and/or repair, as necessary -Remove pollutants from catch basins. Replace and/or repair pollutant source. -Remove (sweep min. 2 times/year) -Remove -Stabilize and restore to original specs - Stabilize and restore to original specs -Remove - Stabilize and restore to original specs -Restore original specs -Remove -Mow a min. of 3 times/year. May increase for aesthetic reasons. -Remove -Remove -Remove -Remove in early spring by sweeping - Stabilize and restore to original specs -Repair and restore to original specs -Mow -Remove -Remove -Remove & replace any damaged vegetation Description of Inspection Parameters -Accumulated sediment in catch basin sumps -Accumulated debris and litter -Damage or fatigue of storm structures or associated components -Accumulation of pollutants, including oils or grease, in catch basin sumps -Accumulated sediment in paved areas -Accumulated debris and litter -Differential settlement of embankments -Embankment erosion -Animal burrows -Cracking, bulging, or sliding of embankment -Vegetation: 80% coverage + less than 15% invasive plant species -Unauthorized plantings -Undesirable vegetative growth -Accumulated debris and litter -Accumulation of snow and ice on catch basins, inlet and outlet structures, and end sections -Stock piled snow near inlets and outlets -Remaining deicing materials -Erosion of side slopes -Formation of rills or gullies -Excess grass growth -Undesirable vegetative growth -Accumulated debris, litter, or sediment -Residual deicing materials (sand) Frequency Annual & After Major Storms Biannual/ Annual Annual Annual Monthly Monthly Maintenance Item Site Structures Pavement Embankments Grass and Landscaped areas Winter Maintenance Swales Stormwater Report 401 E Main Street 11 7 Conclusion This Stormwater Pollution Prevention Plan for the for 401 E Main Street incorporates an Erosion and Sediment Control Plan and Stormwater Management Plan. The SWPPP identifies the measures to be implemented during construction to minimize soil erosion and control sediment transport off- site, and after construction to control the water quality and quantity of stormwater runoff from the developed site to minimize adverse effects to downstream conditions. This Stormwater Pollution Prevention Plan has been developed in accordance with the requirements of the Town of Yorktown and the New York State Department of Environmental Conservation (NYSDEC) State Pollutant Discharge Elimination System (SPDES) Phase II technical standards. It is our opinion that the proposed project will not adversely impact adjacent or downstream properties, or receiving surface waters or wetlands, if the erosion and sediment control measures and stormwater management facilities are properly constructed, and maintained in accordance with the requirements outlined herein. Stormwater Report 401 E Main Street Appendix Pre-Development HydroCAD Analysis 14S Existing Routing Diagram for 401 E Main St Storm Prepared by Hildenbrand Engineering, PLLC, Printed 1/11/2025 HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link 401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 2HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (sq-ft) CN Description (subcatchment-numbers) 11,503 82 Dirt roads, HSG B (14S) 5,581 98 Pavement Remains (14S) 17,084 87 TOTAL AREA 401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 3HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Soil Listing (selected nodes) Area (sq-ft) Soil Group Subcatchment Numbers 0 HSG A 11,503 HSG B 14S 0 HSG C 0 HSG D 5,581 Other 14S 17,084 TOTAL AREA Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 4HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Time span=0.00-36.00 hrs, dt=0.05 hrs, 721 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=17,084 sf 32.67% Impervious Runoff Depth=7.53"Subcatchment 14S: Existing Tc=10.0 min CN=87 Runoff=2.83 cfs 10,725 cf Total Runoff Area = 17,084 sf Runoff Volume = 10,725 cf Average Runoff Depth = 7.53" 67.33% Pervious = 11,503 sf 32.67% Impervious = 5,581 sf Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 5HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 14S: Existing Runoff = 2.83 cfs @ 12.14 hrs, Volume= 10,725 cf, Depth= 7.53" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 100-YR Rainfall=9.11" Area (sf) CN Description * 5,581 98 Pavement Remains 11,503 82 Dirt roads, HSG B 17,084 87 Weighted Average 11,503 67.33% Pervious Area 5,581 32.67% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 14S: Existing Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)3 2 1 0 Type III 24-hr 100-YR Rainfall=9.11" Runoff Area=17,084 sf Runoff Volume=10,725 cf Runoff Depth=7.53" Tc=10.0 min CN=87 2.83 cfs Stormwater Report 401 E Main Street Appendix B Post-Development HydroCAD Analysis 11S DA-1 12S PARKING 15S UNTREATED 15R DESIGN LINE 1 10P Rain Garden 13P INFILTRATION Routing Diagram for 401 E Main St Storm Prepared by Hildenbrand Engineering, PLLC, Printed 1/11/2025 HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Subcat Reach Pond Link 401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 2HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Rainfall Events Listing Event# Event Name Storm Type Curve Mode Duration (hours) B/B Depth (inches) AMC 1 1-YR Type III 24-hr Default 24.00 1 2.75 2 2 10-YR Type III 24-hr Default 24.00 1 5.04 2 3 100-YR Type III 24-hr Default 24.00 1 9.11 2 401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 3HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Area Listing (selected nodes) Area (sq-ft) CN Description (subcatchment-numbers) 10,452 61 >75% Grass cover, Good, HSG B (15S) 5,597 98 PARKING & WALKS (12S) 1,035 98 ROOF (11S) 17,084 75 TOTAL AREA 401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 4HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Soil Listing (selected nodes) Area (sq-ft) Soil Group Subcatchment Numbers 0 HSG A 10,452 HSG B 15S 0 HSG C 0 HSG D 6,632 Other 11S, 12S 17,084 TOTAL AREA Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 5HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Time span=0.00-36.00 hrs, dt=0.05 hrs, 721 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=1,035 sf 100.00% Impervious Runoff Depth=2.52"Subcatchment 11S: DA-1 Tc=5.0 min CN=98 Runoff=0.06 cfs 217 cf Runoff Area=5,597 sf 100.00% Impervious Runoff Depth=2.52"Subcatchment 12S: PARKING Tc=5.0 min CN=98 Runoff=0.34 cfs 1,175 cf Runoff Area=10,452 sf 0.00% Impervious Runoff Depth=0.28"Subcatchment 15S: UNTREATED Tc=8.0 min CN=61 Runoff=0.03 cfs 240 cf Inflow=0.03 cfs 240 cfReach 15R: DESIGN LINE 1 Outflow=0.03 cfs 240 cf Peak Elev=429.53' Storage=35 cf Inflow=0.06 cfs 217 cfPond 10P: Rain Garden Discarded=0.02 cfs 217 cf Primary=0.00 cfs 0 cf Outflow=0.02 cfs 217 cf Peak Elev=426.37' Storage=348 cf Inflow=0.34 cfs 1,175 cfPond 13P: INFILTRATION Discarded=0.05 cfs 1,175 cf Primary=0.00 cfs 0 cf Outflow=0.05 cfs 1,175 cf Total Runoff Area = 17,084 sf Runoff Volume = 1,632 cf Average Runoff Depth = 1.15" 61.18% Pervious = 10,452 sf 38.82% Impervious = 6,632 sf Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 6HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 11S: DA-1 Runoff = 0.06 cfs @ 12.07 hrs, Volume= 217 cf, Depth= 2.52" Routed to Pond 10P : Rain Garden Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 1-YR Rainfall=2.75" Area (sf) CN Description * 1,035 98 ROOF 1,035 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 11S: DA-1 Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Type III 24-hr 1-YR Rainfall=2.75" Runoff Area=1,035 sf Runoff Volume=217 cf Runoff Depth=2.52" Tc=5.0 min CN=98 0.06 cfs Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 7HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 12S: PARKING Runoff = 0.34 cfs @ 12.07 hrs, Volume= 1,175 cf, Depth= 2.52" Routed to Pond 13P : INFILTRATION Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 1-YR Rainfall=2.75" Area (sf) CN Description * 5,597 98 PARKING & WALKS 5,597 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 12S: PARKING Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Type III 24-hr 1-YR Rainfall=2.75" Runoff Area=5,597 sf Runoff Volume=1,175 cf Runoff Depth=2.52" Tc=5.0 min CN=98 0.34 cfs Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 8HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 15S: UNTREATED Runoff = 0.03 cfs @ 12.29 hrs, Volume= 240 cf, Depth= 0.28" Routed to Reach 15R : DESIGN LINE 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 1-YR Rainfall=2.75" Area (sf) CN Description 10,452 61 >75% Grass cover, Good, HSG B 10,452 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 15S: UNTREATED Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Type III 24-hr 1-YR Rainfall=2.75" Runoff Area=10,452 sf Runoff Volume=240 cf Runoff Depth=0.28" Tc=8.0 min CN=61 0.03 cfs Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 9HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Reach 15R: DESIGN LINE 1 Inflow Area = 17,084 sf, 38.82% Impervious, Inflow Depth = 0.17" for 1-YR event Inflow = 0.03 cfs @ 12.29 hrs, Volume= 240 cf Outflow = 0.03 cfs @ 12.29 hrs, Volume= 240 cf, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Reach 15R: DESIGN LINE 1 Inflow Outflow Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.034 0.032 0.03 0.028 0.026 0.024 0.022 0.02 0.018 0.016 0.014 0.012 0.01 0.008 0.006 0.004 0.002 0 Inflow Area=17,084 sf 0.03 cfs0.03 cfs Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 10HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Pond 10P: Rain Garden Inflow Area = 1,035 sf,100.00% Impervious, Inflow Depth = 2.52" for 1-YR event Inflow = 0.06 cfs @ 12.07 hrs, Volume= 217 cf Outflow = 0.02 cfs @ 11.85 hrs, Volume= 217 cf, Atten= 70%, Lag= 0.0 min Discarded = 0.02 cfs @ 11.85 hrs, Volume= 217 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Pond 13P : INFILTRATION Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs / 2 Peak Elev= 429.53' @ 12.38 hrs Surf.Area= 166 sf Storage= 35 cf Plug-Flow detention time= 9.6 min calculated for 217 cf (100% of inflow) Center-of-Mass det. time= 9.2 min ( 768.0 - 758.8 ) Volume Invert Avail.Storage Storage Description #1 431.50' 249 cf Custom Stage Data (Prismatic) Listed below (Recalc) #2 430.00' 75 cf Custom Stage Data (Prismatic) Listed below (Recalc) 249 cf Overall x 30.0% Voids #3 429.00' 66 cf Custom Stage Data (Prismatic) Listed below (Recalc) 166 cf Overall x 40.0% Voids 390 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 431.50 166 0 0 433.00 166 249 249 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 430.00 166 0 0 431.50 166 249 249 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 429.00 166 0 0 430.00 166 166 166 Device Routing Invert Outlet Devices #1 Discarded 429.00'5.000 in/hr Exfiltration over Surface area #2 Primary 431.50'8.0" Horiz. Overflow Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.02 cfs @ 11.85 hrs HW=429.04' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.02 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=429.00' (Free Discharge) 2=Overflow Grate ( Controls 0.00 cfs) Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 11HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 10P: Rain Garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=1,035 sf Peak Elev=429.53' Storage=35 cf 0.06 cfs 0.02 cfs0.02 cfs 0.00 cfs Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 12HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Pond 13P: INFILTRATION Inflow Area = 6,632 sf,100.00% Impervious, Inflow Depth = 2.13" for 1-YR event Inflow = 0.34 cfs @ 12.07 hrs, Volume= 1,175 cf Outflow = 0.05 cfs @ 11.65 hrs, Volume= 1,175 cf, Atten= 87%, Lag= 0.0 min Discarded = 0.05 cfs @ 11.65 hrs, Volume= 1,175 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Reach 15R : DESIGN LINE 1 Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs / 6 Peak Elev= 426.37' @ 12.59 hrs Surf.Area= 392 sf Storage= 348 cf Plug-Flow detention time= 46.8 min calculated for 1,175 cf (100% of inflow) Center-of-Mass det. time= 46.6 min ( 805.4 - 758.8 ) Volume Invert Avail.Storage Storage Description #1A 425.00' 354 cf 16.00'W x 24.50'L x 3.54'H Field A 1,388 cf Overall - 503 cf Embedded = 885 cf x 40.0% Voids #2A 425.50' 503 cf Cultec R-330XLHD x 9 Inside #1 Effective Size= 47.8"W x 30.0"H => 7.45 sf x 7.00'L = 52.2 cf Overall Size= 52.0"W x 30.5"H x 8.50'L with 1.50' Overlap Row Length Adjustment= +1.50' x 7.45 sf x 3 rows 857 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 425.00'5.000 in/hr Exfiltration over Surface area #2 Primary 428.00'4.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.05 cfs @ 11.65 hrs HW=425.05' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=425.00' (Free Discharge) 2=Orifice/Grate ( Controls 0.00 cfs) Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 13HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 13P: INFILTRATION - Chamber Wizard Field A Chamber Model = Cultec R-330XLHD (Cultec Recharger® 330XLHD) Effective Size= 47.8"W x 30.0"H => 7.45 sf x 7.00'L = 52.2 cf Overall Size= 52.0"W x 30.5"H x 8.50'L with 1.50' Overlap Row Length Adjustment= +1.50' x 7.45 sf x 3 rows 52.0" Wide + 6.0" Spacing = 58.0" C-C Row Spacing 3 Chambers/Row x 7.00' Long +1.50' Row Adjustment = 22.50' Row Length +12.0" End Stone x 2 = 24.50' Base Length 3 Rows x 52.0" Wide + 6.0" Spacing x 2 + 12.0" Side Stone x 2 = 16.00' Base Width 6.0" Stone Base + 30.5" Chamber Height + 6.0" Stone Cover = 3.54' Field Height 9 Chambers x 52.2 cf +1.50' Row Adjustment x 7.45 sf x 3 Rows = 502.9 cf Chamber Storage 1,388.3 cf Field - 502.9 cf Chambers = 885.4 cf Stone x 40.0% Voids = 354.2 cf Stone Storage Chamber Storage + Stone Storage = 857.1 cf = 0.020 af Overall Storage Efficiency = 61.7% Overall System Size = 24.50' x 16.00' x 3.54' 9 Chambers 51.4 cy Field 32.8 cy Stone Type III 24-hr 1-YR Rainfall=2.75"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 14HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 13P: INFILTRATION Inflow Outflow Discarded Primary Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=6,632 sf Peak Elev=426.37' Storage=348 cf 0.34 cfs 0.05 cfs0.05 cfs 0.00 cfs Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 15HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Time span=0.00-36.00 hrs, dt=0.05 hrs, 721 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=1,035 sf 100.00% Impervious Runoff Depth=4.80"Subcatchment 11S: DA-1 Tc=5.0 min CN=98 Runoff=0.12 cfs 414 cf Runoff Area=5,597 sf 100.00% Impervious Runoff Depth=4.80"Subcatchment 12S: PARKING Tc=5.0 min CN=98 Runoff=0.64 cfs 2,240 cf Runoff Area=10,452 sf 0.00% Impervious Runoff Depth=1.39"Subcatchment 15S: UNTREATED Tc=8.0 min CN=61 Runoff=0.32 cfs 1,213 cf Inflow=0.32 cfs 1,287 cfReach 15R: DESIGN LINE 1 Outflow=0.32 cfs 1,287 cf Peak Elev=430.38' Storage=85 cf Inflow=0.12 cfs 414 cfPond 10P: Rain Garden Discarded=0.04 cfs 413 cf Primary=0.00 cfs 0 cf Outflow=0.04 cfs 413 cf Peak Elev=428.08' Storage=785 cf Inflow=0.64 cfs 2,240 cfPond 13P: INFILTRATION Discarded=0.05 cfs 2,167 cf Primary=0.08 cfs 74 cf Outflow=0.12 cfs 2,241 cf Total Runoff Area = 17,084 sf Runoff Volume = 3,868 cf Average Runoff Depth = 2.72" 61.18% Pervious = 10,452 sf 38.82% Impervious = 6,632 sf Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 16HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 11S: DA-1 Runoff = 0.12 cfs @ 12.07 hrs, Volume= 414 cf, Depth= 4.80" Routed to Pond 10P : Rain Garden Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 10-YR Rainfall=5.04" Area (sf) CN Description * 1,035 98 ROOF 1,035 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 11S: DA-1 Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.13 0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Type III 24-hr 10-YR Rainfall=5.04" Runoff Area=1,035 sf Runoff Volume=414 cf Runoff Depth=4.80" Tc=5.0 min CN=98 0.12 cfs Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 17HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 12S: PARKING Runoff = 0.64 cfs @ 12.07 hrs, Volume= 2,240 cf, Depth= 4.80" Routed to Pond 13P : INFILTRATION Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 10-YR Rainfall=5.04" Area (sf) CN Description * 5,597 98 PARKING & WALKS 5,597 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 12S: PARKING Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Type III 24-hr 10-YR Rainfall=5.04" Runoff Area=5,597 sf Runoff Volume=2,240 cf Runoff Depth=4.80" Tc=5.0 min CN=98 0.64 cfs Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 18HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 15S: UNTREATED Runoff = 0.32 cfs @ 12.13 hrs, Volume= 1,213 cf, Depth= 1.39" Routed to Reach 15R : DESIGN LINE 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 10-YR Rainfall=5.04" Area (sf) CN Description 10,452 61 >75% Grass cover, Good, HSG B 10,452 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 15S: UNTREATED Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Type III 24-hr 10-YR Rainfall=5.04" Runoff Area=10,452 sf Runoff Volume=1,213 cf Runoff Depth=1.39" Tc=8.0 min CN=61 0.32 cfs Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 19HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Reach 15R: DESIGN LINE 1 Inflow Area = 17,084 sf, 38.82% Impervious, Inflow Depth = 0.90" for 10-YR event Inflow = 0.32 cfs @ 12.13 hrs, Volume= 1,287 cf Outflow = 0.32 cfs @ 12.13 hrs, Volume= 1,287 cf, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Reach 15R: DESIGN LINE 1 Inflow Outflow Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Inflow Area=17,084 sf 0.32 cfs0.32 cfs Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 20HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Pond 10P: Rain Garden Inflow Area = 1,035 sf,100.00% Impervious, Inflow Depth = 4.80" for 10-YR event Inflow = 0.12 cfs @ 12.07 hrs, Volume= 414 cf Outflow = 0.04 cfs @ 12.15 hrs, Volume= 413 cf, Atten= 67%, Lag= 4.8 min Discarded = 0.04 cfs @ 12.15 hrs, Volume= 413 cf Primary = 0.00 cfs @ 0.00 hrs, Volume= 0 cf Routed to Pond 13P : INFILTRATION Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs / 2 Peak Elev= 430.38' @ 12.35 hrs Surf.Area= 332 sf Storage= 85 cf Plug-Flow detention time= 19.0 min calculated for 413 cf (100% of inflow) Center-of-Mass det. time= 17.4 min ( 764.4 - 747.0 ) Volume Invert Avail.Storage Storage Description #1 431.50' 249 cf Custom Stage Data (Prismatic) Listed below (Recalc) #2 430.00' 75 cf Custom Stage Data (Prismatic) Listed below (Recalc) 249 cf Overall x 30.0% Voids #3 429.00' 66 cf Custom Stage Data (Prismatic) Listed below (Recalc) 166 cf Overall x 40.0% Voids 390 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 431.50 166 0 0 433.00 166 249 249 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 430.00 166 0 0 431.50 166 249 249 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 429.00 166 0 0 430.00 166 166 166 Device Routing Invert Outlet Devices #1 Discarded 429.00'5.000 in/hr Exfiltration over Surface area #2 Primary 431.50'8.0" Horiz. Overflow Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.04 cfs @ 12.15 hrs HW=430.16' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.04 cfs) Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=429.00' (Free Discharge) 2=Overflow Grate ( Controls 0.00 cfs) Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 21HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 10P: Rain Garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.13 0.125 0.12 0.115 0.11 0.105 0.1 0.095 0.09 0.085 0.08 0.075 0.07 0.065 0.06 0.055 0.05 0.045 0.04 0.035 0.03 0.025 0.02 0.015 0.01 0.005 0 Inflow Area=1,035 sf Peak Elev=430.38' Storage=85 cf 0.12 cfs 0.04 cfs0.04 cfs 0.00 cfs Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 22HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Pond 13P: INFILTRATION Inflow Area = 6,632 sf,100.00% Impervious, Inflow Depth = 4.05" for 10-YR event Inflow = 0.64 cfs @ 12.07 hrs, Volume= 2,240 cf Outflow = 0.12 cfs @ 12.51 hrs, Volume= 2,241 cf, Atten= 81%, Lag= 26.6 min Discarded = 0.05 cfs @ 11.05 hrs, Volume= 2,167 cf Primary = 0.08 cfs @ 12.51 hrs, Volume= 74 cf Routed to Reach 15R : DESIGN LINE 1 Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs / 6 Peak Elev= 428.08' @ 12.51 hrs Surf.Area= 392 sf Storage= 785 cf Plug-Flow detention time= 120.4 min calculated for 2,237 cf (100% of inflow) Center-of-Mass det. time= 120.4 min ( 867.3 - 747.0 ) Volume Invert Avail.Storage Storage Description #1A 425.00' 354 cf 16.00'W x 24.50'L x 3.54'H Field A 1,388 cf Overall - 503 cf Embedded = 885 cf x 40.0% Voids #2A 425.50' 503 cf Cultec R-330XLHD x 9 Inside #1 Effective Size= 47.8"W x 30.0"H => 7.45 sf x 7.00'L = 52.2 cf Overall Size= 52.0"W x 30.5"H x 8.50'L with 1.50' Overlap Row Length Adjustment= +1.50' x 7.45 sf x 3 rows 857 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 425.00'5.000 in/hr Exfiltration over Surface area #2 Primary 428.00'4.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.05 cfs @ 11.05 hrs HW=425.04' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=0.07 cfs @ 12.51 hrs HW=428.08' (Free Discharge) 2=Orifice/Grate (Weir Controls 0.07 cfs @ 0.90 fps) Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 23HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 13P: INFILTRATION - Chamber Wizard Field A Chamber Model = Cultec R-330XLHD (Cultec Recharger® 330XLHD) Effective Size= 47.8"W x 30.0"H => 7.45 sf x 7.00'L = 52.2 cf Overall Size= 52.0"W x 30.5"H x 8.50'L with 1.50' Overlap Row Length Adjustment= +1.50' x 7.45 sf x 3 rows 52.0" Wide + 6.0" Spacing = 58.0" C-C Row Spacing 3 Chambers/Row x 7.00' Long +1.50' Row Adjustment = 22.50' Row Length +12.0" End Stone x 2 = 24.50' Base Length 3 Rows x 52.0" Wide + 6.0" Spacing x 2 + 12.0" Side Stone x 2 = 16.00' Base Width 6.0" Stone Base + 30.5" Chamber Height + 6.0" Stone Cover = 3.54' Field Height 9 Chambers x 52.2 cf +1.50' Row Adjustment x 7.45 sf x 3 Rows = 502.9 cf Chamber Storage 1,388.3 cf Field - 502.9 cf Chambers = 885.4 cf Stone x 40.0% Voids = 354.2 cf Stone Storage Chamber Storage + Stone Storage = 857.1 cf = 0.020 af Overall Storage Efficiency = 61.7% Overall System Size = 24.50' x 16.00' x 3.54' 9 Chambers 51.4 cy Field 32.8 cy Stone Type III 24-hr 10-YR Rainfall=5.04"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 24HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 13P: INFILTRATION Inflow Outflow Discarded Primary Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Inflow Area=6,632 sf Peak Elev=428.08' Storage=785 cf 0.64 cfs 0.12 cfs 0.05 cfs 0.08 cfs Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 25HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Time span=0.00-36.00 hrs, dt=0.05 hrs, 721 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=1,035 sf 100.00% Impervious Runoff Depth=8.87"Subcatchment 11S: DA-1 Tc=5.0 min CN=98 Runoff=0.21 cfs 765 cf Runoff Area=5,597 sf 100.00% Impervious Runoff Depth=8.87"Subcatchment 12S: PARKING Tc=5.0 min CN=98 Runoff=1.16 cfs 4,137 cf Runoff Area=10,452 sf 0.00% Impervious Runoff Depth=4.31"Subcatchment 15S: UNTREATED Tc=8.0 min CN=61 Runoff=1.11 cfs 3,755 cf Inflow=2.18 cfs 5,140 cfReach 15R: DESIGN LINE 1 Outflow=2.18 cfs 5,140 cf Peak Elev=431.55' Storage=150 cf Inflow=0.21 cfs 765 cfPond 10P: Rain Garden Discarded=0.06 cfs 718 cf Primary=0.09 cfs 45 cf Outflow=0.15 cfs 763 cf Peak Elev=435.80' Storage=857 cf Inflow=1.16 cfs 4,182 cfPond 13P: INFILTRATION Discarded=0.05 cfs 2,867 cf Primary=1.24 cfs 1,385 cf Outflow=1.29 cfs 4,252 cf Total Runoff Area = 17,084 sf Runoff Volume = 8,657 cf Average Runoff Depth = 6.08" 61.18% Pervious = 10,452 sf 38.82% Impervious = 6,632 sf Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 26HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 11S: DA-1 Runoff = 0.21 cfs @ 12.07 hrs, Volume= 765 cf, Depth= 8.87" Routed to Pond 10P : Rain Garden Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 100-YR Rainfall=9.11" Area (sf) CN Description * 1,035 98 ROOF 1,035 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 11S: DA-1 Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Type III 24-hr 100-YR Rainfall=9.11" Runoff Area=1,035 sf Runoff Volume=765 cf Runoff Depth=8.87" Tc=5.0 min CN=98 0.21 cfs Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 27HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 12S: PARKING Runoff = 1.16 cfs @ 12.07 hrs, Volume= 4,137 cf, Depth= 8.87" Routed to Pond 13P : INFILTRATION Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 100-YR Rainfall=9.11" Area (sf) CN Description * 5,597 98 PARKING & WALKS 5,597 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Subcatchment 12S: PARKING Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)1 0 Type III 24-hr 100-YR Rainfall=9.11" Runoff Area=5,597 sf Runoff Volume=4,137 cf Runoff Depth=8.87" Tc=5.0 min CN=98 1.16 cfs Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 28HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Subcatchment 15S: UNTREATED Runoff = 1.11 cfs @ 12.12 hrs, Volume= 3,755 cf, Depth= 4.31" Routed to Reach 15R : DESIGN LINE 1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Type III 24-hr 100-YR Rainfall=9.11" Area (sf) CN Description 10,452 61 >75% Grass cover, Good, HSG B 10,452 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 8.0 Direct Entry, Subcatchment 15S: UNTREATED Runoff Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)1 0 Type III 24-hr 100-YR Rainfall=9.11" Runoff Area=10,452 sf Runoff Volume=3,755 cf Runoff Depth=4.31" Tc=8.0 min CN=61 1.11 cfs Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 29HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Reach 15R: DESIGN LINE 1 Inflow Area = 17,084 sf, 38.82% Impervious, Inflow Depth = 3.61" for 100-YR event Inflow = 2.18 cfs @ 12.10 hrs, Volume= 5,140 cf Outflow = 2.18 cfs @ 12.10 hrs, Volume= 5,140 cf, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs Reach 15R: DESIGN LINE 1 Inflow Outflow Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)2 1 0 Inflow Area=17,084 sf 2.18 cfs2.18 cfs Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 30HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Pond 10P: Rain Garden Inflow Area = 1,035 sf,100.00% Impervious, Inflow Depth = 8.87" for 100-YR event Inflow = 0.21 cfs @ 12.07 hrs, Volume= 765 cf Outflow = 0.15 cfs @ 12.17 hrs, Volume= 763 cf, Atten= 29%, Lag= 5.8 min Discarded = 0.06 cfs @ 12.15 hrs, Volume= 718 cf Primary = 0.09 cfs @ 12.17 hrs, Volume= 45 cf Routed to Pond 13P : INFILTRATION Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs / 2 Peak Elev= 431.55' @ 12.15 hrs Surf.Area= 498 sf Storage= 150 cf Plug-Flow detention time= 23.5 min calculated for 763 cf (100% of inflow) Center-of-Mass det. time= 22.0 min ( 760.7 - 738.7 ) Volume Invert Avail.Storage Storage Description #1 431.50' 249 cf Custom Stage Data (Prismatic) Listed below (Recalc) #2 430.00' 75 cf Custom Stage Data (Prismatic) Listed below (Recalc) 249 cf Overall x 30.0% Voids #3 429.00' 66 cf Custom Stage Data (Prismatic) Listed below (Recalc) 166 cf Overall x 40.0% Voids 390 cf Total Available Storage Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 431.50 166 0 0 433.00 166 249 249 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 430.00 166 0 0 431.50 166 249 249 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 429.00 166 0 0 430.00 166 166 166 Device Routing Invert Outlet Devices #1 Discarded 429.00'5.000 in/hr Exfiltration over Surface area #2 Primary 431.50'8.0" Horiz. Overflow Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.06 cfs @ 12.15 hrs HW=431.55' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.06 cfs) Primary OutFlow Max=0.08 cfs @ 12.17 hrs HW=431.55' (Free Discharge) 2=Overflow Grate (Weir Controls 0.08 cfs @ 0.73 fps) Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 31HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 10P: Rain Garden Inflow Outflow Discarded Primary Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 Inflow Area=1,035 sf Peak Elev=431.55' Storage=150 cf 0.21 cfs 0.15 cfs 0.06 cfs 0.09 cfs Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 32HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Summary for Pond 13P: INFILTRATION Inflow Area = 6,632 sf,100.00% Impervious, Inflow Depth = 7.57" for 100-YR event Inflow = 1.16 cfs @ 12.07 hrs, Volume= 4,182 cf Outflow = 1.29 cfs @ 12.07 hrs, Volume= 4,252 cf, Atten= 0%, Lag= 0.2 min Discarded = 0.05 cfs @ 9.40 hrs, Volume= 2,867 cf Primary = 1.24 cfs @ 12.07 hrs, Volume= 1,385 cf Routed to Reach 15R : DESIGN LINE 1 Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.05 hrs / 6 Peak Elev= 435.80' @ 12.07 hrs Surf.Area= 392 sf Storage= 857 cf Plug-Flow detention time= (not calculated: outflow precedes inflow) Center-of-Mass det. time= 94.0 min ( 832.6 - 738.7 ) Volume Invert Avail.Storage Storage Description #1A 425.00' 354 cf 16.00'W x 24.50'L x 3.54'H Field A 1,388 cf Overall - 503 cf Embedded = 885 cf x 40.0% Voids #2A 425.50' 503 cf Cultec R-330XLHD x 9 Inside #1 Effective Size= 47.8"W x 30.0"H => 7.45 sf x 7.00'L = 52.2 cf Overall Size= 52.0"W x 30.5"H x 8.50'L with 1.50' Overlap Row Length Adjustment= +1.50' x 7.45 sf x 3 rows 857 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 425.00'5.000 in/hr Exfiltration over Surface area #2 Primary 428.00'4.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Discarded OutFlow Max=0.05 cfs @ 9.40 hrs HW=425.14' (Free Discharge) 1=Exfiltration (Exfiltration Controls 0.05 cfs) Primary OutFlow Max=1.10 cfs @ 12.07 hrs HW=434.85' (Free Discharge) 2=Orifice/Grate (Orifice Controls 1.10 cfs @ 12.61 fps) Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 33HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 13P: INFILTRATION - Chamber Wizard Field A Chamber Model = Cultec R-330XLHD (Cultec Recharger® 330XLHD) Effective Size= 47.8"W x 30.0"H => 7.45 sf x 7.00'L = 52.2 cf Overall Size= 52.0"W x 30.5"H x 8.50'L with 1.50' Overlap Row Length Adjustment= +1.50' x 7.45 sf x 3 rows 52.0" Wide + 6.0" Spacing = 58.0" C-C Row Spacing 3 Chambers/Row x 7.00' Long +1.50' Row Adjustment = 22.50' Row Length +12.0" End Stone x 2 = 24.50' Base Length 3 Rows x 52.0" Wide + 6.0" Spacing x 2 + 12.0" Side Stone x 2 = 16.00' Base Width 6.0" Stone Base + 30.5" Chamber Height + 6.0" Stone Cover = 3.54' Field Height 9 Chambers x 52.2 cf +1.50' Row Adjustment x 7.45 sf x 3 Rows = 502.9 cf Chamber Storage 1,388.3 cf Field - 502.9 cf Chambers = 885.4 cf Stone x 40.0% Voids = 354.2 cf Stone Storage Chamber Storage + Stone Storage = 857.1 cf = 0.020 af Overall Storage Efficiency = 61.7% Overall System Size = 24.50' x 16.00' x 3.54' 9 Chambers 51.4 cy Field 32.8 cy Stone Type III 24-hr 100-YR Rainfall=9.11"401 E Main St Storm Printed 1/11/2025Prepared by Hildenbrand Engineering, PLLC Page 34HydroCAD® 10.10-6a s/n 11988 © 2020 HydroCAD Software Solutions LLC Pond 13P: INFILTRATION Inflow Outflow Discarded Primary Hydrograph Time (hours) 3635343332313029282726252423222120191817161514131211109876543210Flow (cfs)1 0 Inflow Area=6,632 sf Peak Elev=435.80' Storage=857 cf 1.16 cfs 1.29 cfs 0.05 cfs 1.24 cfs Stormwater Report 401 E Main Street Appendix C Water Quality Volume (WQv) & Rain Garden Calculations Rain Garden WORKSHEET Project: 401 E Main St Value Units Restrictions Design Storm P 2.74 in Impervious Area I 0.023 ac Area A 0.023 ac Percent Impervious Area %I 100.00 % Runoff Volume Rv 0.95 WQv WQv 217.324 cf Step 2: Calculate the Volumes Value Units Restrictions Area of Rain Garden ARG 166 sf Depth of Soil Media df 1.5 ft Soil Media Porosity k 0.3 Soil Media Volume VSM (ARG)(DSM)(PSM) or 74.7 cf Depth of Drainage Layer DDL 1 ft Drainage Layer Porosity k 0.4 Drainage Layer Volume VDL (ARG)(DDL)(PDL) or 66.4 cf Ponding depth PD 0.5 ft Ponding Volume PV (ARG) (PD) or 83 cf Value Units Restrictions Total WQv 217 cf Rain Garden Volume 224.1 cf Step 1: Determine WQv for Drainage to Rain Garden Area Measured from Site Plan Step 3: Totals Stormwater Report 401 E Main Street Appendix D Soil Report United States Department of Agriculture 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 Westchester County, New York Natural Resources Conservation Service November 5, 2024 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://www.nrcs.usda.gov/wps/ portal/nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/? cid=nrcs142p2_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, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface....................................................................................................................2 Soil Map..................................................................................................................5 Soil Map................................................................................................................6 Legend..................................................................................................................7 Map Unit Legend..................................................................................................8 Map Unit Descriptions..........................................................................................8 Westchester County, New York.......................................................................10 ChC—Charlton fine sandy loam, 8 to 15 percent slopes............................10 Uc—Udorthents, wet substratum.................................................................11 References............................................................................................................13 4 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. 5 6 Custom Soil Resource Report Soil Map 45766864576692457669845767044576710457671645767224576686457669245766984576704457671045767164576722600505 600511 600517 600523 600529 600535 600541 600547 600553 600559 600565 600505 600511 600517 600523 600529 600535 600541 600547 600553 600559 600565 41° 20' 8'' N 73° 47' 55'' W41° 20' 8'' N73° 47' 53'' W41° 20' 7'' N 73° 47' 55'' W41° 20' 7'' N 73° 47' 53'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 18N WGS84 0 10 20 40 60 Feet 0 4 8 16 24 Meters Map Scale: 1:277 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI 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 date(s) listed below. Soil Survey Area: Westchester County, New York Survey Area Data: Version 20, Aug 26, 2024 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Oct 21, 2022—Oct 27, 2022 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. Custom Soil Resource Report 7 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI ChC Charlton fine sandy loam, 8 to 15 percent slopes 0.3 97.2% Uc Udorthents, wet substratum 0.0 2.8% Totals for Area of Interest 0.3 100.0% 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 or soils in the map unit, and thus they do 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, Custom Soil Resource Report 8 onsite 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 soil 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. Custom Soil Resource Report 9 Westchester County, New York ChC—Charlton fine sandy loam, 8 to 15 percent slopes Map Unit Setting National map unit symbol: 2wh0q Elevation: 0 to 1,440 feet Mean annual precipitation: 36 to 71 inches Mean annual air temperature: 39 to 55 degrees F Frost-free period: 140 to 240 days Farmland classification: Farmland of statewide importance Map Unit Composition Charlton and similar soils:85 percent Minor components:15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Charlton Setting Landform:Hills, ground moraines, ridges Landform position (two-dimensional):Backslope Landform position (three-dimensional):Side slope Down-slope shape:Convex, linear Across-slope shape:Convex Parent material:Coarse-loamy melt-out till derived from granite, gneiss, and/or schist Typical profile Ap - 0 to 7 inches: fine sandy loam Bw - 7 to 22 inches: gravelly fine sandy loam C - 22 to 65 inches: gravelly fine sandy loam Properties and qualities Slope:8 to 15 percent Depth to restrictive feature:More than 80 inches Drainage class:Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat):Moderately low to high (0.14 to 14.17 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Maximum salinity:Nonsaline (0.0 to 1.9 mmhos/cm) Available water supply, 0 to 60 inches: Moderate (about 6.9 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Ecological site: F144AY034CT - Well Drained Till Uplands Hydric soil rating: No Custom Soil Resource Report 10 Minor Components Paxton Percent of map unit:5 percent Landform:Drumlins, hills, ground moraines Landform position (two-dimensional):Backslope Landform position (three-dimensional):Side slope Down-slope shape:Convex, linear Across-slope shape:Convex Hydric soil rating: No Sutton, fine sandy loam Percent of map unit:5 percent Landform:Ground moraines, hills, ridges Landform position (two-dimensional):Footslope Landform position (three-dimensional):Base slope Down-slope shape:Concave Across-slope shape:Linear Hydric soil rating: No Chatfield Percent of map unit:3 percent Landform:Hills, ridges Landform position (two-dimensional):Summit, shoulder, backslope Landform position (three-dimensional):Nose slope, side slope, crest Down-slope shape:Convex Across-slope shape:Linear, convex Hydric soil rating: No Canton Percent of map unit:2 percent Landform:Hills, ground moraines, ridges Landform position (two-dimensional):Summit, shoulder, backslope Landform position (three-dimensional):Nose slope, side slope, crest Down-slope shape:Convex, linear Across-slope shape:Convex Hydric soil rating: No Uc—Udorthents, wet substratum Map Unit Setting National map unit symbol: bd7g Elevation: 50 to 2,400 feet Mean annual precipitation: 46 to 50 inches Mean annual air temperature: 46 to 52 degrees F Frost-free period: 115 to 215 days Farmland classification: Not prime farmland Map Unit Composition Udorthents, wet substratum, and similar soils:80 percent Custom Soil Resource Report 11 Minor components:20 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Udorthents, Wet Substratum Typical profile H1 - 0 to 4 inches: gravelly loam H2 - 4 to 72 inches: very gravelly loam Properties and qualities Slope:0 to 5 percent Depth to restrictive feature:40 to 60 inches to lithic bedrock Drainage class:Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat):Moderately low to high (0.06 to 5.95 in/hr) Depth to water table:About 6 to 24 inches Frequency of flooding:None Frequency of ponding:None Calcium carbonate, maximum content:15 percent Available water supply, 0 to 60 inches: Low (about 4.6 inches) Minor Components Udorthents Percent of map unit:5 percent Hydric soil rating: No Urban land Percent of map unit:5 percent Hydric soil rating: Unranked Fredon Percent of map unit:2 percent Landform:Depressions Hydric soil rating: Yes Paxton Percent of map unit:2 percent Hydric soil rating: No Ipswich Percent of map unit:2 percent Landform:Tidal marshes Hydric soil rating: Yes Raynham Percent of map unit:2 percent Hydric soil rating: Yes Hinckley Percent of map unit:2 percent Hydric soil rating: No Custom Soil Resource Report 12 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.nrcs.usda.gov/wps/portal/ nrcs/detail/national/soils/?cid=nrcs142p2_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:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580 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://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ home/?cid=nrcs142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 13 United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/soils/scientists/?cid=nrcs142p2_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.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/? cid=nrcs142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf Custom Soil Resource Report 14 Stormwater Report 401 E Main Street Appendix E Rainfall Data Extreme Precipitation Tables Northeast Regional Climate Center Data represents point estimates calculated from partial duration series. All precipitation amounts are displayed in inches. Metadata for Point Smoothing Yes State Location Latitude 41.336 degrees North Longitude 73.799 degrees West Elevation 130 feet Date/Time Tue Nov 05 2024 09:16:09 GMT-0500 (Eastern Standard Time) Extreme Precipitation Estimates 5min 10min 15min 30min 60min 120min 1hr 2hr 3hr 6hr 12hr 24hr 48hr 1da 1yr 0.34 0.52 0.65 0.85 1.06 1.32 1yr 0.91 1.24 1.51 1.85 2.26 2.75 3.11 1yr 2.44 2yr 0.40 0.61 0.76 1.00 1.26 1.57 2yr 1.09 1.47 1.81 2.23 2.73 3.34 3.75 2yr 2.96 5yr 0.46 0.72 0.90 1.20 1.54 1.95 5yr 1.33 1.80 2.25 2.79 3.44 4.22 4.77 5yr 3.74 10yr 0.51 0.80 1.01 1.38 1.79 2.29 10yr 1.54 2.10 2.65 3.31 4.09 5.04 5.71 10yr 4.46 25yr 0.59 0.93 1.19 1.65 2.19 2.84 25yr 1.89 2.58 3.31 4.16 5.18 6.37 7.27 25yr 5.64 50yr 0.66 1.06 1.36 1.90 2.56 3.35 50yr 2.21 3.01 3.92 4.95 6.17 7.62 8.73 50yr 6.74 100yr 0.74 1.20 1.55 2.20 3.00 3.95 100yr 2.59 3.52 4.65 5.89 7.37 9.11 10.49 100yr 8.07 200yr 0.84 1.37 1.78 2.55 3.51 4.66 200yr 3.03 4.12 5.51 7.01 8.79 10.92 12.61 200yr 9.66 500yr 1.00 1.64 2.14 3.11 4.35 5.82 500yr 3.75 5.08 6.91 8.85 11.14 13.87 16.10 500yr 12.2 Lower Confidence Limits 5min 10min 15min 30min 60min 120min 1hr 2hr 3hr 6hr 12hr 24hr 48hr 1da 1yr 0.26 0.41 0.49 0.67 0.82 1.13 1yr 0.71 1.10 1.37 1.70 2.09 2.46 2.74 1yr 2.1 2yr 0.38 0.59 0.73 0.99 1.22 1.46 2yr 1.05 1.42 1.66 2.10 2.65 3.23 3.64 2yr 2.86 5yr 0.43 0.67 0.83 1.14 1.45 1.71 5yr 1.25 1.67 1.95 2.45 3.09 3.97 4.40 5yr 3.52 10yr 0.48 0.74 0.91 1.27 1.64 1.91 10yr 1.42 1.87 2.19 2.74 3.47 4.43 5.07 10yr 3.92 25yr 0.54 0.83 1.03 1.47 1.94 2.21 25yr 1.67 2.16 2.55 3.17 4.05 5.28 6.11 25yr 4.67 50yr 0.60 0.92 1.14 1.65 2.21 2.48 50yr 1.91 2.42 2.89 3.55 4.57 6.06 7.04 50yr 5.36 100yr 0.68 1.02 1.28 1.85 2.54 2.80 100yr 2.19 2.73 3.27 3.96 5.18 6.96 8.13 100yr 6.16 200yr 0.76 1.14 1.45 2.10 2.93 3.15 200yr 2.53 3.08 3.72 4.45 5.86 8.03 9.41 200yr 7.1 500yr 0.90 1.34 1.72 2.50 3.55 3.71 500yr 3.06 3.63 4.43 5.20 6.95 9.74 11.43 500yr 8.62 Upper Confidence Limits 5min 10min 15min 30min 60min 120min 1hr 2hr 3hr 6hr 12hr 24hr 48hr 1da 1yr 0.38 0.58 0.71 0.96 1.18 1.43 1yr 1.02 1.40 1.60 2.05 2.50 2.96 3.33 1yr 2.62 2yr 0.41 0.64 0.78 1.06 1.31 1.57 2yr 1.13 1.54 1.78 2.29 2.86 3.49 3.91 2yr 3.09 5yr 0.49 0.76 0.94 1.29 1.64 1.97 5yr 1.41 1.92 2.27 2.96 3.75 4.48 5.18 5yr 3.96 10yr 0.57 0.88 1.09 1.52 1.96 2.34 10yr 1.70 2.29 2.73 3.61 4.59 5.69 6.45 10yr 5.03 25yr 0.70 1.06 1.32 1.89 2.49 2.97 25yr 2.15 2.90 3.49 4.74 6.02 7.52 8.61 25yr 6.66 50yr 0.81 1.24 1.54 2.21 2.98 3.56 50yr 2.57 3.48 4.19 5.81 7.38 9.31 10.70 50yr 8.24 100yr 0.95 1.44 1.81 2.61 3.58 4.27 100yr 3.09 4.17 5.04 7.15 9.04 11.52 13.32 100yr 10.1 11/5/24, 9:16 AM Extreme Precipitation https://precip.eas.cornell.edu/#/product/xprecip_results 1/1 Jacob Road Solar David J. Cooper Phone: (914) 682-7800 Direct: (914) 220-9795 81 Main Street, Suite 415 White Plains, New York 10601 www.zarin-steinmetz.com January 15, 2025 Via Hand Delivery & Electronic Mail Hon. Richard Fon, Chairman and the Members of the Town of Yorktown Planning Board Albert A. Capellini Community & Cultural Center 1974 Commerce Street, Room 222 Yorktown Heights, NY 10598 Re: Jacob Solar 2344 NY, LLC Application for Site Plan & Special Permit Approvals 1805 Jacob Road, Yorktown, New York Dear Chairman Fon and Members of the Planning Board: This firm represents Jacob Solar 2344 NY, LLC (“Freestone” or “Applicant”), the contract- lessee of an approximately 53-acre parcel located at 1805 Jacob Road (Tax Map ID 35.16-1-4) (“Property”). Freestone is seeking Site Plan and Special Permit approval to facilitate the development of a large-scale solar energy system on the Property to provide electrical power to the Yorktown community and its vicinity through a low-impact, renewable energy resource (“Project”). The Applicant is providing the following responses to comments received at the Public Informational Hearing held on October 7th and November 4th. The responses are also provided to augment the SEQRA record, as your Board continues to assess whether the Project could result in any adverse impacts that can be quantified as significant. As summarized previously and below, we submit that the empirical data and other objective evidence in the record demonstrates that the Project could be constructed and operated without imposing adverse conditions upon the community that could be quantified as significant. We respectfully request placement on your Board’s January 27th meeting agenda to go through these items, as well as to continue the SEQRA review of the Project. Enclosed are the following materials to facilitate your Board’s continued review:  Jacob Road Solar Farm: Operations, Maintenance, and Sustainability Plan, prepared by Freestone Renewables, dated November 21, 2024;  Project Decommissioning Plan, prepared by Freestone Renewables, dated January 2025;  Wildlife Memorandum, prepared by LaBella Associates, dated January 9, 2025; Yorktown Planning Board January 15, 2025 | Page 2 4914-0050-2541, v. 4  Aerial of Site Disturbance and Surrounding Woodland Area; and  Photographs of Similarly Situated Solar Developments. Notably, the Applicant has not yet updated its visual analyses and line of sight studies. The Town Board is still evaluating potential revisions to the solar power generation and facilities ordinance. Since these revisions may affect the layout of the Project, the Applicant is waiting for the Town Board to complete its process before updating the visual impact studies. Given that a moratorium has already been in place for 11 months, and the latest version expires on March 31, 2025, we anticipate providing updated visual impact studies in the near future. Policy Considerations: “Does Yorktown Need Solar Energy?” Several members of the public questioned whether the Project would foster the Town’s development and sustainability goals, as well as whether there is capacity in the local electric grid to route energy generated by the Project to local homes. We respectfully submit that the answer to these questions is emphatically “yes.” The Town has adopted various planning policies establishing its commitment to promoting green infrastructure and renewable energy for the community. The Project is entirely consistent with these policies, including the various zoning regulations permitting large scale solar development at the Property. In addition, the Project would add approximately 3.125 MW/ac (6,220,000 kW/h) annually to the local electric grid, which would reduce the utility companies’ need to purchase electricity from plants located tens to hundreds of miles away (many of which emit carbon dioxide into the atmosphere). This is a tangible benefit of distributed community solar projects – it allows local homeowners to direct their utility providers to purchase electricity from local renewable sources, thereby reducing transmission costs that are typically passed onto the consumer. Here, 6,220,000 kW/hour is enough electricity to power approximately 550 homes1 in the area to receive such benefits each year. This empirical evidence provides further support under SEQRA to determine the Project would result in a beneficial impact to the community. Consistency with Public Policy and Goals Determining whether a project would result in “a material conflict with a community’s current plans or goals as officially adopted” is a relevant factor for the Planning Board’s SEQRA 1 According to the U.S. EIA’s 2020 Residential Energy Consumption Survey, the average household in New York State consumes approximately 10,483 kWh. See U.S. EIA, Detailed Household Site Electricity End-Use Consumption in the United States by State (June 2023), https://www.eia.gov/consumption/residential/data/2020/state/pdf/ce5.3.st.pdf. When the total annual energy production of the solar farm (6,220,000 kWh) is divided by the average household consumption, the resulting figure is approximately 593 homes. To be on the conservative side and account for fluctuations in energy use, Freestone rounded this figure down to 550 homes. Yorktown Planning Board January 15, 2025 | Page 3 4914-0050-2541, v. 4 analysis. See 6 N.Y.C.R.R. § 617.7(c)(v). Here, the Project would further the Town’s express goals to encourage the development of renewable energy sources that will serve the community. Specifically, the Town recognizes that “[t]he use of solar energy to provide electrical power for the needs of the Town’s residents and businesses is consistent with the Town of Yorktown’s commitment to green infrastructure and practices, and consistent with its goal of promoting long- term sustainability.” See Town of Yorktown Zoning Ordinance, § 300-81.4B(2). Additionally, the Town enacted the solar regulations to: advance and protect the public health, safety, and welfare of the Town of Yorktown, including: (a) Taking advantage of a safe, abundant, and nonpolluting energy resource; (b) Decreasing the cost of energy to the owners of commercial and residential properties, including single-family houses; [] (c) Increasing employment and business development in the region by furthering the installation of solar energy systems; (d) Decreasing the use of fossil fuels, which reduces the carbon footprint of the Town, aids in energy independence of the Town and nation, and reduces polluting greenhouse gas emissions; [and] (e) Increasing resiliency of the energy grid during storm events and times of peak energy demand. See id., § 300-81.4B(4). As these policy statements confirm, solar power provides numerous benefits to the Town. Any quantification of land use and planning policy impacts under SEQRA, therefore, must start with the fact that the Town’s adopted plans and goals encapsulated in the Zoning Code recognize the benefits of introducing solar power to the local grid. “Where Will This Power be Utilized?” A related question raised during the public information sessions was whether the local grid was already at “capacity,” such that the electricity produced by the Project would not reach local homes. As one commentor posited, the Project would not produce local benefits because Consolidated Edison’s (“Con Ed”) grid already reaches its “peak load” from existing sources, and therefore, any electron produced by the Project would be re-routed to “down county communities or the City of New York.” Initially, the Board should recognize the erroneous technical assumption underlying the theory that the 6,220,000 kW/hour of renewable energy produced by the Project annually would bypass Yorktown and only be delivered to 550 homes “down county.” The local electrical grid is not a closed system where all electricity is already produced and distributed locally. Rather, Con Ed purchases electricity from a variety of sources throughout the region, and then channels it into the local grid from the point of generation. The source of electricity can change based upon where Con Ed decides to purchase it. Yorktown Planning Board January 15, 2025 | Page 4 4914-0050-2541, v. 4 According to the U.S. Energy Information Administration (“US EIA”), in 2022, approximately 58% of New York’s electricity generation came from natural gas producers2 - none of which are located in the Town of Yorktown.3 To the contrary, most of this fossil fuel is produced by plants in upstate and western New York, or in neighboring states.4 The next two highest sources of energy in the state are hydropower (21%) and nuclear (21%). Again, there are no hydropower or nuclear power plants in Yorktown, or anywhere near it. Indeed, the closest source of nuclear power, Indian Point, was closed in 2021. This reduced the overall amount of nuclear power in the grid from 32% to 21%.5 What this means in Yorktown is that the vast majority of electricity in the local grid is currently produced at far away plants, many of which still rely on fossil fuels. The Project would be connected directly to Con Ed’s Buchanan network.6 The Buchanan network has a peak demand of 113 MW, while only 12.75MW is produced within the network.7 The remainder must be purchased from outside sources and transmitted thorough main transmission lines to the area. The local production is expected to reach only 34.30MW once approved distributed solar projects come online (not including the Project). Thus, even with the new solar development in the queue, Con Ed will need to purchase over 78MW from outside sources, and then pass any transmission costs onto the user. By introducing 3.125 MW/ac of distributed community solar to the Buchanan network, Con Ed would be able to replace electricity in the grid currently purchased from far away plants, and distribute it directly to homes in Yorktown and the surrounding area. Again, this is a benefit of any distributed community solar development - supply costs passed onto the consumer should be reduced since there would be no need to build new utility infrastructure, or use long distance mains, to provide this electricity. Instead, through the community solar program,8 local homeowners can direct Con Ed to use electricity generated by the Project to power their houses. Currently, homeowners enrolling in the community solar plan are entitled to a reduction between 5% to 20%,9 depending on household income, on their monthly electric bills. Even with the other 2 See U.S. EIA, New York State Energy Profile, https://www.eia.gov/state/?sid=NY. 3 See US EIA, U.S. Energy Atlas (last updated April 17, 2024); available at https://atlas.eia.gov/apps/895faaf79d744f2ab3b72f8bd5778e68/explore. 4 Id. 5 See U.S. EIA, New York State Energy Profile, https://www.eia.gov/state/?sid=NY. 6 See Con Edison Hosting Capacity Web Application, https://coned.maps.arcgis.com/apps/MapSeries/index.html?appid=edce09020bba4f999c06c462e5458ac7. 7 See Con Ed Load Curve Chart, https://www.coned.com/-/media/files/coned/documents/business- partners/local-generation-facilities/systemdata/loadcurve/W-13-LC. 8 The Community Solar Program provides homeowners with the opportunity to benefit from locally- generated renewable energy, and associated reduction in electricity costs, without the installation of solar panels on their roofs, through a subscription service. See NYSERDA, Solar Program, “How Community Solar Works,” https://www.nyserda.ny.gov/All-Programs/NY-Sun/Community-Solar/How-It-Works. 9 See NYSERDA, Solar Program, “How to Choose a Project,” https://www.nyserda.ny.gov/All- Programs/NY-Sun/Community-Solar/Choosing-a-Project. Yorktown Planning Board January 15, 2025 | Page 5 4914-0050-2541, v. 4 renewable energy projects available in the area, there is more than ample “capacity” in the Buchanan network to ensure that all of the 550 homes that could benefit from the Project would be located in Yorktown and the surrounding area. Project Operations Your Board and other commenters also sought additional details concerning Project operations. First, and foremost, we reiterate that the Project will not include a battery storage component. The New York City Department of Environmental Protection erroneously stated in its October 17, 2024 letter that the Project would include a 116MW battery energy storage unit. This has never been the case. Whereas the conceptual site plan submitted in April 2024 included a future “placeholder” area for a small storage unit encased in a fireproof box (with no more than 1.8MW capacity), this area has been removed from the site plan. Second, Freestone has entered into a 25-year lease with the property owner with the option to renew the lease for another 5 years following the end of the lease term. This lease term is typical for solar leases, which on average last between 20-25 years. Site operations would consist solely of solar power generation, which, as explained above, would flow directly into the grid using existing utility infrastructure. Third, Freestone has prepared an Operations, Maintenance, and Sustainability Plan, enclosed herein, which sets forth procedures for system monitoring, operations and maintenance of the equipment, management of the vegetative screening, inspections, and compliance with safety and regulatory standards. For example, system monitoring procedures would include daily reporting, which would provide regular insight into the health and safety of the system, and escalation procedures to ensure any issues are resolved in a timely manner by the appropriate personnel. Additionally, there is a plan in place for both maintenance of vegetation within the fenced area (i.e., grass and weeds surrounding the equipment) and maintenance of the vegetation outside of the fenced area planted for screening purposes. Specifically, the vegetative screening would be inspected on a monthly basis for the first year to identify any gaps or damaged plants and replace plants as necessary. After the first year, this inspection would take place on an annual basis. Finally, decommissioning in accordance with the enclosed Decommissioning Plan would occur at the end of the facility’s life. As set forth in the enclosed Decommissioning Plan, the site would be restored to its original condition, including replanting of native vegetation. The panels removed from the site would not be disposed of in a landfill; rather, the materials would be recycled to the greatest extent practicable and what cannot be recycled would be disposed of in a manner consistent with local, state, and federal law. Specifically, the materials in the panels would likely be recycled in the following ways:  Aluminum and Glass: Easily dismantled and reused for other applications. Yorktown Planning Board January 15, 2025 | Page 6 4914-0050-2541, v. 4  Silicon Photovoltaic Cells: Melted down to extract silicon for reuse in new panels or other products.  Backsheet: Recycled through chemical processes to separate and recover valuable materials.  Glass Cullet: If direct recycling is not feasible, the panels are ground into “glass cullet,” which is repurposed in building materials like bricks, reflective road markings, and new glass products. In addition, as the panels do not contain any hazardous materials, disposal would not pose any risk of harm to the community. Removal of Trees and Wildlife Habitat Several commentators opined that the Project would result in significant adverse impacts to wildlife habitat due to the removal of trees to accommodate the solar panels. The quantification of habitat impacts must start with an assessment of the ecological value of the existing habitat to be removed. See generally, EAF Part 2, Section 7 (Impact on Plants and Animals). Enclosed herewith is a Wildlife Memorandum, prepared by LaBella Associates, which assesses the habitat on-site to determine potential impacts to species found within the woodland areas on-site (“Habitat Assessment Report”). This report supplements a report completed in June 2023, which was included in the EAF narrative for the Project, previously submitted to your Board. Prior to performing the on-site habitat assessment, LaBella performed a species screening for the site. Then, LaBella visited the Property on April 19-20, 2023 to complete a field survey to document existing habitats, plants, and wildlife on the site. The scope of the survey included the potential for the presence of habitat on the site for certain protected species flagged by USFWS, including the Indiana bat, northern long-eared bat, bog turtle, and monarch butterfly, which species are known to occur in the general range of the site. There are no known occurrence records for State-listed protected species associated with the site. The Habitat Assessment Report establishes that there are no known protected rare, threatened, or endangered species designated by the state or federal governments on or within the vicinity of the site.10 See Habitat Assessment at 1; cf. EAF Part 2, Questions 7(a) & 7(b). Nor do the wooded areas support species of special concern or conservation need, as listed by the state or federal governments. See Habitat Assessment at 1; cf. EAF Part 2, Questions 7(c) & 7(d). Nor has the wooded area on the Property been designated as a significant natural community or a forest of locally important habitat. See Habitat Assessment at 1; cf. EAF Part 2, Questions 7(f) & 7(h). Rather, the plant and animal species identified on the site are typical suburban species that are commonly found in habitats across the general area. 10 We note that while no bats have been observed on-site, the site does have habitat that could support Indiana bats and northern long-eared bats. Accordingly, it is recommended that tree clearing occur between October 30 and March 31, during the time when the bats would be in hibernation and not present at the Project site. Yorktown Planning Board January 15, 2025 | Page 7 4914-0050-2541, v. 4 As several neighbors corroborated during the public information sessions, the wooded areas on the Property are used by species typical throughout suburban areas in Westchester, such as coyotes, squirrels, deer and the like. See Habitat Assessment at 1. The Project would not substantially interfere with the habitat of these species because there will be ample alternative wooded areas in the area for these animals to use post-construction. This includes 27 acres of wooded area that will remain on the Property. More importantly, there are approximately 6.7 square miles of wooded areas connected to the Property that will remain available. This includes, for example, the nearby Hunter Brook Preserve, which consists of 45 acres of protected forest. The extent of the woodland habitat in the area to remain is illustrated in the Aerial of Site Disturbance and Surrounding Woodland Area included herewith. As this aerial demonstrates, the Project area constitutes a “dot” in a sea of woodland. As such, the Project would not “substantially interfere with nesting/breeding, foraging, or over- wintering habitat for the predominant species that occupy or use” the Property. See EAF Part 2, Question 7(g). Your Board should also consider that, unlike other residential or commercial developments, the footprint of disturbance will contain land that can sustain new habitat in conjunction with the solar use. For example, Freestone is proposing to plant pollinator plants in the area between the perimeter fence and the limit of disturbance, including milkweed habitat for the monarch butterfly. In these minimally maintained 3.5 acres outside the fence, pollinator plants will grow as naturally intended and can continually support the species that benefit from these plants. Also, areas between and underneath the panels will be maintained as a well-vegetated grass surface, consisting mainly of turf grasses. Freestone is also proposing to plant 782 trees to replace those to be removed. The trees include a mix of White Spruce, Fraser Fir, and Green Giant Arborvitae. These species of trees were chosen due to their superior screening abilities, and the specific tree heights were carefully chosen based on the topography of the area where the trees would be planted so that views of the panels would be blocked from surrounding viewpoints. Although the principal purpose of these trees is to achieve adequate screening, they will also provide natural functions, such as habitat for birds and small mammals, as well as transpiration of stormwater runoff. Therefore, based upon the criteria set forth in Part 2 of the EAF, it is respectfully submitted that the Project would not result in any adverse impact to plant or animal habitat that could be quantified as significant under SEQRA. Impacts to Community Character Classifying the significance of a potential impact on community character requires a lead agency to consider whether a project would result in “the creation of a material conflict with a community’s current plans or goals as officially approved or adopted” and/or “the impairment of the character or quality of important historical, archeological, architectural, or aesthetic resources or of existing community or neighborhood character.” See 6 NYCRR, § 617.7(c)(1)(iv) & (v). This includes assessing the potential visual impacts of a project, as well as whether the proposed use is Yorktown Planning Board January 15, 2025 | Page 8 4914-0050-2541, v. 4 consistent with the “expression of the community’s desired future state or character as encapsulated in a comprehensive plan or zoning code.” NYSDEC, SEQR Handbook (4th Ed. 2020), at 83-84. Here, as set forth above, the Town Zoning Code sets forth objectives that include a commitment to green energy infrastructure and practices and the promotion of long-term sustainability, including the development of solar energy systems. See Zoning Code § 300- 81.4B(2). Moreover, The Town recognized in the Zoning Code that solar power generation provides numerous benefits to the community through the generation of power through a nonpolluting energy resource, reduction of energy costs for residents and businesses, employment and business development opportunities, and the strengthening of the local grid’s resiliency. See id., § 300-81.4B(4). To carry out these laudable green energy goals, the Town allowed large scale solar projects as specially permitted uses in the R1-80 District, including on the Property. The Town’s decision to allow large scale solar in the R1-80 District was a recognition that the proposed use could exist harmoniously with residential uses in a neighborhood. It was “tantamount to a legislative finding that the permitted use is in harmony with the general zoning plan and will not adversely affect the neighborhood.” Twin Cnty. Recycling Corp. v. Yevoli, 90 N.Y.2d 1000, 1002 (1997); see also Marcus v. Planning Bd. of Vil. of Wesley Hills, 199 A.D.3d 1007, 1008 (2d Dep’t 2021) (“A use permitted by a special use permit is a use that has been found by the local legislative body to be appropriate for the zoning district and in harmony with the general zoning plan and will not adversely affect the neighborhood.”) (internal quotation omitted). We respectfully submit that this legislative history supports the finding that the Project furthers future planning goals previously adopted by the Town, and thus, would not result in a significant adverse impact on community character. See, e.g., Vill. of Chestnut Ridge v. Town of Ramapo, 45 A.D.3d 74, 94 (2d Dep’t 2007). Nonetheless, Freestone is aware of the neighbors’ concern that the Project may result in visual impacts, or a perceived “blight” to residential character of the neighborhood, if it can be seen from certain vantage points. We submit that the potential visual impact of the Project is limited to views from private homes adjacent to the Property, rather than from nearby roadways or other well-traveled public viewsheds where the Property cannot be seen. This is why Freestone, with the guidance of your Board, incorporated various design measures to reduce or eliminate views of the panels from adjacent residential properties. This includes increasing the wooded buffer area around the perimeter of the Property from 20’ to 80’. It also includes increasing the planting height of the double-row tree screen, particularly along the western side of the Project. As the previously submitted visual analyses demonstrate, these measures will ensure that nearby residential property owners will have limited views (if any) of the Project. We anticipate that the updated visual analyses that will be submitted once the Town Board updates the zoning regulations will continue to demonstrate this. As such, the record would not establish that the Project results in “the impairment of the character or quality of important historical, archeological, Yorktown Planning Board January 15, 2025 | Page 9 4914-0050-2541, v. 4 architectural, or aesthetic resources or of existing community or neighborhood character” that could be classified as significant. See 6 NYCRR, § 617.7(c)(1)(iv) & (v). We submit that the other generalized objections to large-scale, ground-mounted solar developments as “blight” are the result of reactions to previously constructed projects in the area, rather than the specific qualities of Freestone’s well-screened Project. Indeed, several speakers during the public information sessions pointed to these other solar farms as evidence of the Project’s alleged visual impact. Freestone must emphasize that its Project is not comparable to these other solar farms with respect visual impacts. Freestone has devoted (and will continue to devote) significant investments in screening and avoidance of visual impacts. Enclosed herein are photos of the Old Hill Farm and Hemlock Hills solar projects taken from public vantage points in the Town. As the Board can see, these projects do not provide the wooded buffer or thick tree screen Freestone is proposing in connection with the instant Project. Given these substantial differences in visibility and screening, the other projects cited during the public information sessions do not constitute reliable analogies to support a finding that the Project would result in significant visual impacts or other detriment to the community character, which could be classified as significant. Noise Impacts Freestone anticipates noise levels from the equipment – specifically, the inverters – would be about 54 dBA from a distance of 100’ away (similar to the hum of a residential refrigerator11). Thus, noise levels would be generally low and not intrusive, as such noise typically blends into background noise in most residential settings. And significantly, this noise would only occur when the equipment is operational—i.e., during the day. Accordingly, there would be no significant adverse noise impacts. Conclusion Finally, we must respond to a suggestion made during the last meeting that the Project should be subject to a positive declaration, and an EIS prepared. As the Board is aware, SEQRA determinations, including a finding that the Project may result in a significant adverse impact, cannot be premised upon conjecture or generalized community opposition. See, e.g., WEOK Broad. Corp. v. Plan. Bd. of Town of Lloyd, 79 N.Y.2d 373, 384-85 (1992) (“To permit SEQRA determinations to be based on no more than generalized, speculative comments and opinions of local residents and other agencies, would authorize agencies conducting SEQRA reviews to exercise unbridled discretion in making their determinations and would not fulfill SEQRA's mandate.”). Rather, determinations of significance must be supported by empirical evidence or other objective factual bases in the record. Id., 79 N.Y.2d at 384 (annulling lead agency’s finding that a project would result in a visual impact because it was “unsupported by any factual data, scientific authority or any explanatory information such as would constitute substantial evidence.”) 11 See Decibel Level Comparison Chart, https://ehs.yale.edu/sites/default/files/files/decibel-level- chart.pdf. Yorktown Planning Board January 15, 2025 | Page 10 4914-0050-2541, v. 4 As summarized above, the data and objective facts in the record demonstrate that all areas of environmental concern raised (e.g., visual impacts, habitat, noise, operations, etc.) would not rise to a level that could be quantified as “significant” under SEQRA. Accordingly, we respectfully submit that the Record would not support the conclusion that the Project may result in a potentially significant adverse impact, and a negative declaration is warranted. We look forward to continuing review of the Project at the Board’s January 27th meeting, and we thank the Board for its continued attention to this matter. If you have any questions or require any additional information, please do not hesitate to contact us. Respectfully Submitted, ZARIN & STEINMETZ LLP By: _____________________ David J. Cooper Jaclyn V. Cohen Encls. cc: John A. Tegeder, R.A. Robyn A. Steinberg, AICP, CPESC David Chen, Esq., Planning Board Attorney Jacob Solar 2344 NY, LLC LaBella Associates 1 | P a g e Jacobs Road Solar Farm: Operations, Maintenance, and Sustainability Plan Jacob’s Road Solar 1805 Jacob Road, Town of Yorktown, Westchester New York Prepared by: Freestone Renewables Date: 11/21/2024 2 | P a g e Contents Introduction ................................................................................................................................. 4 1. System Monitoring.................................................................................................................... 5 1.1 Purpose .............................................................................................................................. 5 1.2 Monitoring Infrastructure .................................................................................................... 5 1.3 Performance Metrics........................................................................................................... 5 1.4 Seasonal Considerations .................................................................................................... 5 1.4.1 Winter Operations ........................................................................................................ 5 1.4.2 Summer Operations ..................................................................................................... 5 1.5 Reporting ............................................................................................................................ 5 1.6 Escalation Procedures ........................................................................................................ 6 2. Operational Responsibilities ..................................................................................................... 6 2.1 Purpose .............................................................................................................................. 6 2.2 Preventive Maintenance ...................................................................................................... 6 2.3 Corrective Maintenance ...................................................................................................... 6 2.4 Fire Safety and Emergency Response Practices ................................................................... 6 2.4 Administrative Tasks ........................................................................................................... 7 2.5 Contractor and Service Provider Oversight ........................................................................... 7 3. Maintenance Plan .................................................................................................................... 7 3.1 Purpose .............................................................................................................................. 7 3.2 Preventive Maintenance ...................................................................................................... 7 3.3 Corrective Maintenance ...................................................................................................... 7 3.4 Vegetation Management ..................................................................................................... 8 3.5 Screening Maintenance ....................................................................................................... 8 3.6 Inspection and Testing ........................................................................................................ 8 4. Safety and Compliance ............................................................................................................ 8 4.1 Purpose .............................................................................................................................. 8 4.2 Personnel Safety ................................................................................................................. 8 4.3 Emergency Response .......................................................................................................... 9 4.4 Environmental Compliance ................................................................................................. 9 4.5 Site Access and Security ..................................................................................................... 9 4.6 Audits and Inspections ........................................................................................................ 9 5. Sustainability, Environmental Stewardship, and Decommissioning ............................................ 9 3 | P a g e 5.1 Purpose .............................................................................................................................. 9 5.2 Sustainability and Carbon Offsets ....................................................................................... 9 5.3 Biodiversity and Habitat Preservation ................................................................................ 10 5.4 Waste and Recycling ......................................................................................................... 10 5.5 Decommissioning and Site Restoration ............................................................................. 10 4 | P a g e Introduction The purpose of this Operations and Maintenance (O&M) Plan is to provide a comprehensive framework for the safe, efficient, and sustainable operation of the Jacobs Road Solar Farm. This document outlines the procedures, responsibilities, and strategies necessary to maintain optimal system performance, ensure compliance with safety and regulatory standards, and support the long-term sustainability of the facility. The O&M Plan is designed to guide all stakeholders involved in the project, including operations personnel, maintenance teams, and contractors, in the consistent execution of their duties. By adhering to the practices outlined herein, the solar farm will achieve its operational goals, contribute to renewable energy targets, and maintain positive relationships with the community and environment. This document emphasizes the importance of clear communication, structured procedures, and regular oversight to ensure that all aspects of the solar farm’s operation are effectively managed. By detailing actionable maintenance schedules, safety practices, and environmental stewardship initiatives, the plan serves as a practical tool for day-to-day operations and long-term planning. The plan is organized into five sections. Section 1 addresses system monitoring, including performance metrics and seasonal considerations. Section 2 outlines operational responsibilities, including preventive and corrective maintenance. Section 3 focuses on the maintenance plan, highlighting vegetation management, screening maintenance, and inspections. Section 4 covers safety and compliance measures, while Section 5 emphasizes sustainability, environmental stewardship, and decommissioning strategies. Together, these sections provide a holistic approach to operating and maintaining the Jacobs Road Solar Farm. 5 | P a g e 1. System Monitoring 1.1 Purpose The purpose of system monitoring is to ensure the solar farm operates efficiently and effectively by tracking energy production and system performance, detecting and resolving issues promptly, and supporting maintenance decisions and stakeholder reporting. 1.2 Monitoring Infrastructure The monitoring infrastructure will adhere to industry standards and consist of systems for real-time data collection, remote accessibility, and automated alert management. Real-time data collection will track energy output, inverter performance, and battery charge/discharge cycles while environmental sensors measure irradiance, temperature, and wind speed. A cloud-based monitoring platform will provide secure remote access for the O&M team, with reliable data transmission supported by cellular and Ethernet connections. Automated alerts will be configured to notify the O&M team of performance deviations or equipment issues, ensuring prioritized responses to critical events. 1.3 Performance Metrics Key performance indicators to track include energy yield (kWh/kWp), performance ratio (PR) compared to design expectations, downtime and fault occurrence rates, battery efficiency, discharge and charge patterns, and real-time inverter health and grid compliance. 1.4 Seasonal Considerations 1.4.1 Winter Operations Winter operations will involve snow removal conducted after snowstorms to ensure optimal system performance and safe access for maintenance personnel. Snow will be manually or mechanically removed from the face of the panels and around electrical equipment to prevent shading and maintain functionality. Ice melt will be applied to gated entrances and areas frequently accessed by maintenance personnel to ensure safety and accessibility during operations. 1.4.2 Summer Operations Summer operations will primarily involve mowing to manage grass growth within the fenced area. When feasible, sheep grazing will be incorporated as a complementary method to maintain vegetation while supporting the natural landscape. Additionally, weed control methods will be applied to prevent the spread of noxious weeds, ensuring compliance with local regulations and maintaining the site’s aesthetics. All roadways within the fenced area will be sprayed regularly to prevent weed growth and ensure clear access for maintenance activities. 1.5 Reporting The reporting process will include daily automated logging of data and alert summaries, monthly performance summaries covering energy production, downtime, and maintenance activities, and annual comprehensive reviews that offer insights into compliance, financial performance, and 6 | P a g e system health. These reports will ensure transparency and keep all stakeholders informed of the system’s operational status. 1.6 Escalation Procedures Escalation procedures will involve a tiered response system to ensure timely resolution of issues. First-level responses will include O&M technicians inspecting and diagnosing problems promptly after receiving critical alerts. For more complex issues, specialized teams will be engaged to conduct repairs or recalibrations, with coordination initiated with ConEdison for grid-related concerns. In the case of critical failures, immediate notifications will be sent to site management and stakeholders, and backup systems will be deployed if necessary to maintain operations. 2. Operational Responsibilities 2.1 Purpose The purpose of outlining operational responsibilities is to ensure that all activities necessary for the proper functioning, safety, and performance of the solar farm are clearly defined and delegated. This will provide a framework for preventive and corrective maintenance as well as administrative tasks. 2.2 Preventive Maintenance Preventive maintenance will include regularly scheduled activities to minimize unexpected equipment failures and optimize performance. These activities will involve inspecting PV modules for damage, ensuring the proper functioning of inverters, removing debris from the site, and inspecting electrical connections and mounting systems. Semiannual checks will include inspecting screening and landscape health overall, inspecting and cleaning electrical equipment, adjusting system settings, and monitoring system performance to meet the required key performance indicators. 2.3 Corrective Maintenance Corrective maintenance will address unplanned equipment failures and performance issues. Repairs will be conducted promptly to minimize downtime, utilizing an inventory of spare parts and specialized service providers as needed. Criteria will be established to decide whether components should be repaired or replaced based on cost-effectiveness and performance impacts. 2.4 Fire Safety and Emergency Response Practices Fire safety is a critical component of operational responsibilities, particularly given the presence of electrical components and solar arrays that carry high electrical loads. All equipment and wiring will comply with the National Electrical Code (NEC) and other applicable safety standards to mitigate fire risks and ensure safe operation. Vegetation around electrical infrastructure will be carefully maintained to create a defensible space, minimizing the potential for fire spread and ensuring accessibility for emergency response efforts. Freestone will coordinate closely with local fire departments to ensure they are familiar with the system design and response protocols. Site plans will be available on-site for local fire crews to 7 | P a g e reference in the event of an emergency. These plans will detail the layout of electrical components, shutoff points, and access routes. Emergency shutoff switches will be prominently marked and easily accessible to allow for rapid deactivation of the system when necessary. Fire extinguishers and firefighting tools will be strategically placed throughout the site to enable quick action during smaller incidents. Emergency response practices will include clear protocols for fire prevention, evacuation, and system shutdown procedures. Personnel will be trained in these measures during routine safety briefings, and annual reviews of the emergency response plan will be conducted to address any operational changes or new risks. Fire drills will also be held regularly to ensure readiness and identify opportunities for improvement. 2.4 Administrative Tasks Administrative tasks will include maintaining comprehensive records of all maintenance activities, tracking warranty compliance, and ensuring contract obligations are met. These records will be updated in real-time using an online work order management system and will be auditable for transparency. 2.5 Contractor and Service Provider Oversight All contractors and service providers will be required to adhere to safety standards and industry certifications, such as NABCEP and OSHA requirements. Financial solvency, insurance coverage, and qualifications of these providers will be verified prior to engagement. 3. Maintenance Plan 3.1 Purpose The purpose of the maintenance plan is to ensure the solar farm operates at peak efficiency and reliability throughout its lifecycle. By implementing a structured and proactive maintenance plan, the risk of equipment failure, downtime, and performance degradation is minimized, while long- term system health is preserved. 3.2 Preventive Maintenance Preventive maintenance activities will follow a scheduled plan to ensure that all components function optimally. Key tasks will include regular inspections of PV modules for damage, array mounting system checks, and cleaning debris around the system to prevent shading and electrical issues. Inverters and electrical equipment will be inspected for proper operation, and any adjustments to settings or components will be made as necessary. For energy storage systems, maintenance will focus on periodic inspections of battery enclosures, terminals, and specific operational parameters to ensure efficiency and safety. 3.3 Corrective Maintenance Corrective maintenance will address unplanned events such as equipment malfunctions or performance deviations. Rapid response protocols will ensure that technicians can identify and resolve issues promptly to minimize downtime. Decisions to repair or replace components will be guided by cost-benefit analyses, ensuring that system reliability and operational efficiency are 8 | P a g e prioritized. Spare parts for critical components, such as inverters, batteries, and wiring, will be stocked to facilitate timely repairs. 3.4 Vegetation Management Vegetation management will form a critical part of the maintenance plan. During the growing season, Mowing will be the primary method of controlling grass and weeds within the fenced area. With the intention to incorporate sheep grazing when possible. Supplementary mowing will be performed as needed to manage areas not adequately maintained by grazing. Weed control measures, including the application of approved herbicides, will be implemented to prevent the spread of invasive and noxious weeds. Additionally, all roadways within the site will be sprayed periodically to ensure clear and safe access. Seasonal cutting of trees surrounding the solar array will be performed to minimize shading and prevent interference with solar panel performance. 3.5 Screening Maintenance A landscaping plan is in place designed to maintain visual and environmental harmony with the surrounding area. This plan specifies the types of trees and shrubs to be planted and their locations across the site. Monthly inspections will be conducted during the first year to assess the condition and effectiveness of the screening vegetation, transitioning to annual inspections thereafter. Any gaps or damaged plants identified during these inspections will be addressed with replacement planting during the next appropriate planting season. This ongoing commitment to screening maintenance ensures the solar farm upholds its aesthetic and regulatory responsibilities while supporting local biodiversity and preserving the site's visual integrity. 3.6 Inspection and Testing Regular inspections and system testing will verify compliance with operational standards. This will include testing inverters, combiner boxes, and transformers, as well as verifying the grounding system’s continuity. Battery systems will be load-tested and capacity-tested to ensure optimal performance. All findings from inspections and tests will be documented and used to guide future maintenance activities. 4. Safety and Compliance 4.1 Purpose The safety and compliance section ensures that all activities at the solar farm adhere to established safety standards and regulatory requirements. This framework aims to protect personnel, equipment, and the surrounding environment while maintaining operational integrity. 4.2 Personnel Safety All personnel working on-site will be trained in safety protocols and emergency response procedures. OSHA compliance will be mandatory, and certifications such as NABCEP (North American Board of Certified Energy Practitioners) will be required for specific roles. Personal protective equipment (PPE), including arc-flash-rated clothing, helmets, gloves, and safety harnesses, will be provided and mandatory for all site activities. Regular safety briefings and drills will be conducted to ensure personnel remain prepared for potential hazards. 9 | P a g e 4.3 Emergency Response An emergency response plan will be maintained and reviewed annually. This plan will include detailed procedures for addressing fires, medical emergencies, extreme weather, and other potential incidents. Coordination with local emergency services, including fire and medical teams, will ensure a rapid and effective response to any on-site emergencies. Clearly marked evacuation routes and assembly points will be established throughout the site. 4.4 Environmental Compliance The solar farm will comply with all local, state, and federal environmental regulations. This includes adherence to guidelines for vegetation management, waste disposal, and emissions control. Measures will be taken to prevent runoff from herbicides and maintain proper drainage systems to minimize environmental impact. 4.5 Site Access and Security To maintain safety and compliance, the solar farm will have controlled access points monitored by security systems. Gates and fences will be inspected regularly to ensure they remain secure and functional. All visitors and contractors will be required to sign in and adhere to on-site safety protocols. Unauthorized access will be prevented to ensure the safety of equipment and personnel. 4.6 Audits and Inspections Regular audits and inspections will be conducted to ensure compliance with safety standards and regulatory requirements. This includes:  Safety audits to evaluate the effectiveness of training, equipment, and procedures.  Environmental inspections to confirm adherence to vegetation and waste management plans.  Compliance reviews to ensure alignment with local, state, and federal regulations. 5. Sustainability, Environmental Stewardship, and Decommissioning 5.1 Purpose This section ensures that the solar farm operates with a commitment to sustainability and environmental responsibility throughout its lifecycle, from active operations to eventual decommissioning and site restoration. The goal is to maximize positive environmental impacts while minimizing waste and disruption. 5.2 Sustainability and Carbon Offsets The solar farm will contribute to local and global sustainability efforts by offsetting carbon emissions through renewable energy production. Annual reports will quantify the greenhouse gas reductions achieved, helping demonstrate progress toward state and national renewable energy targets. Sustainable practices, such as grazing sheep for vegetation management and maintaining native plant species, will further reduce the farm’s environmental footprint. 10 | P a g e 5.3 Biodiversity and Habitat Preservation The farm will actively promote biodiversity by maintaining vegetation that supports local wildlife, including pollinator-friendly plants where feasible. Screening vegetation will also contribute to preserving the natural aesthetic of the area. Any necessary pesticide or herbicide applications will be carefully managed to avoid harming local ecosystems. These efforts align with local environmental regulations and sustainability goals. 5.4 Waste and Recycling Maintenance activities will include a commitment to reducing waste. Damaged solar panels, batteries, and other components will be recycled or repurposed where possible, following industry best practices and recycling programs. Proper disposal procedures will be followed for any hazardous materials, such as damaged battery cells, to ensure compliance with environmental regulations. 5.5 Decommissioning and Site Restoration A decommissioning plan will be enacted to responsibly remove infrastructure and restore the site. This plan will include:  The safe removal and recycling of solar panels, inverters, and battery systems.  The removal of racking systems and other structural elements, with materials recycled wherever feasible.  Restoration of the site to its original condition, including soil stabilization and replanting of native vegetation.  Collaboration with local authorities to ensure all decommissioning activities meet or exceed regulatory requirements. 100 Fillmore St., Suite 500 Denver, CO 80206 Phone (303) 968-1171 www.freestonerenewables.com Jacob’s Road Solar Project Freestone Renewables, LLC Project Decommissioning Plan Jan 2025 Contents 1. 1. 2. The Project Developer Freestone Renewables, or any future owner-operator of Jacob’s Road Solar Facility, will manage and coordinate the decommissioning process. The project developer will ensure compliance with all 3. Decommissioning of the Solar Facility Decommissioning of Jacob’s Road Solar Facility may 5. 3.2 Environmental Effects The decommissioning of Jacob’s Road Solar Facility 3. 4. Costs of Decommissioning & Decommissioning Bond APPENDIX A Means of Managing Excess Materials and Waste Materials/ Waste Means of Managing Excess Materials and Waste PV Modules If there is no possibility for reuse, the panels will either be returned to the manufacturer for appropriate disposal or will be transported to a recycling facility where the glass, metal, and semiconductor materials will be separated and recycled. Metal racking These materials will be disposed of off-site at an approved facility Transformers and APPENDIX B Photo 1: North of array (looking south) Photo 2: East of array (looking west) Photo 3: South of array (looking north) Photo 4: West of array (looking east) APPENDIX C January 9, 2025 Ryan Hutcherson Freestone Renewables LLC P.O. Box 630678 Highlands Ranch, Colorado 80163 RE: Jacob Road Solar Wildlife Memo Yorktown, Westchester County, New York LaBella Project No. 2231869 Dear Ryan: Freestone Renewables LLC (Client) retained LaBella Associates, D.P.C. (LaBella) to perform a habitat survey for the Jacob Road Solar Project (tax parcel ID 35.16-1-4) located on a 53-acre parcel in the Town of Yorktown, Westchester County, New York. This memo is intended to provide additional information on the potential wildlife use on the parcel. A habitat assessment report for the site was prepared in June 2023 by LaBella (under separate cover). LaBella conducted a field survey to document existing habitats, plants, and wildlife within the Study Area on April 19-20, 2023. The subject parcel consists of undeveloped forest, made up of a heterogeneous habitat which is not unique to the geographic area. Recorded tree species from the April 2023 fieldwork include red oak (Quercus rubrum), tulip tree (Liriodendron tulipifera), sugar maple (Acer saccharum), red maple (Acer rubrum) American beech (Fagus grandifolia), and green ash (Fraxinus pennsylvanica). Understory species including honeysuckle (Lonicera spp.), Japanese barberry (Berberis thunbergia), sugar maple, American beech, and green ash were also observed. Ground story species included ornamental bittersweet (Celastrus orbiculatus), garlic mustard (Alliaria petiolate), skunk cabbage (Symplocarpus foetidus), wild raspberry (Rubus idaeus), poison ivy (Toxicodendron radicans), tussock sedge (Carex stricta), Christmas fern (Polystichum acrostichoides), and trout lily (Erythronium americanum). Other plant species were present; however, the species were not identifiable due to the time of year. It is noted that honeysuckle, garlic mustard, ornamental bittersweet, and Japanese barberry are invasive species. These species were observed to be starting to dominate the understory and native plants. Wildlife species were identified by audible calls, scat, or visual observation. Observed avian species included blue jay (Cyanocitta cristata), wild turkey (Meleagris gallopavo), white breasted nuthatch (Sitta carolinensis), northern cardinal (Cardinalis cardinalis), common crow (Corvus brachyrhynchos), ovenbird (Seiurus aurocapilla), downy woodpecker (Picoides pubescens), and black capped chickadee (Poecile atricapillus). Observed mammal species included white tailed deer (Odocoileus virginianus), red squirrel (Sciurus vulgaris), gray squirrel (Sciurus carolinensis), eastern chipmunk (Tamias striatus), eastern coyote (Canis latrans), raccoon (Procyon lotor), and opossum (Didelphis virginiana). Three herpetological species were observed during the field work. These species include eastern newt (Notophthalmus viridescens), northern two-lined salamander (Eurycea bislineata), and spring peeper (Pseudacris crucifer). These species are commonly found in habitats across the general area. As noted in the June 2023 Habitat Survey Report, there are no known New York State protected rare, threatened, or endangered species on or within the vicinity of the site. An updated review of the New York State Department of 2 Environmental Conservation (NYSDEC) Environmental Resource Mapper (attached) shows there are still no records of State-listed protected species on, or near, the site. The development of a solar array within the northern portion of the 56-acre parcel will alter the landscape and vegetative community. Wildlife migration from the proposed project area is expected; however, the current land use in the surrounding area appears to sustain the wildlife currently utilizing the proposed project area and similar habitat (wetlands, streams, undeveloped forest corridors) is adjacent to the proposed project. Common wildlife often are highly adaptable, and suitable habitat adjoins the site. Many mammals and birds prefer a mix of habitat types. The land development may create specific wildlife species opportunities as well. The open area within the array is proposed to be a pollinator friendly area, with the intent to grow naturally without regular maintenance with the exception of removal of encroaching woody vegetation, if necessary. Planting the area with a pollinator seed mix may have an added habitat and benefits for various pollin ators, including the monarch butterfly (Danaus plexippus), which is proposed to be listed as a threatened species by the United States Fish and Wildlife Service (USFWS) and other important insects such as honeybees (Apis mellifera). The maintained grassy areas can provide browsing opportunities for deer, rodent hunting for coyotes/raptors, and insect habitat. The physical change in landscape does not ensure wildlife will stop utilizing the proposed project area. Additionally, the removal of invasive species such as Japanese barberry and invasive honeysuckle can benefit local plant communities by removing potential seed sources. Invasive species establish in an area and out compete native species. The removal of these species may reduce the expansion of invasive species into the nearby Hunter Brook Preserve. Please feel free to contact me at 518-231-1437 or at mkiburz@labellapc.com with any questions or concerns. Respectfully submitted, LaBella Associates Mark Kiburz, PWS, CPESC Lead Wetland Delineator Creator: SC Reviewer: LDFIGURE 1 Sources:1. Study Area: Created by LaBella using informationprovided by the client.2. Basemap: ESRI USA Topo Map (Updated: 2019)in reference to USGS Topographic Mohegan Lake(1981) Quadrangle. 0 1,000 2,000 Feet LaBella Project No: 2231869Date: May 2023 USGS Site Location Habitat AssessmentReport 1805 Jacob RoadYorktown, NY 1 inch = 2,000 feet LegendStudy Area FreestoneRenewables, LLC Path: \\cash.lab\P\GLOBAL\Projects\Freestone Renewables LLC\2231869 - Jacob Rd Solar Yorktown NY\06_Drawings\Environmental\Habitat Assessment\Figure 1 - USGS Site Location.mxdÜ Environmental Resource Mapper Westchester County GIS, Esri, HERE, Garmin, iPC, New York State, Maxar January 6, 2025 0 0.15 0.30.07 mi 0 0.25 0.50.13 km 1:9,028 NYS Department of Environmental Conservation Not a legal document N➤➤N Image © 2025 A ir busImage © 2025 A irbus ZBA Ref. Teatown Campus Renovation WITHDRAWN BY APPLICANT ZBA Ref. Panbar Realty Richard Fon John A. Tegeder, R.A. Chairperson Director of Planning TOWN OF YORKTOWN PLANNING BOARD Albert A. Capellini Community and Cultural Center, 1974 Commerce Street, Yorktown Heights, New York 10598, Phone (914) 962-6565, Fax (914) 962-3986 Crompond / Croton Heights / Huntersville / Jefferson Valley / Kitchawan / Mohegan Lake / Shrub Oak / Sparkle Lake / Teatown / Yorktown / Yorktown Heights To: Zoning Board of Appeals From: Planning Board Date: January 22, 2024 Subject: ZBA Referral #39/24 SBL: 16.17-4-20 & 22 ____________________________________________________________________________________ At its meeting on January 13, 2025, the Planning Board discussed the lot area variance request. The applicant or its representatives were not in attendance at the meeting. The Planning Board respectfully requests that the Zoning Board of Appeals grant it more time to review this referral so that they may place it on the January 27, 2025, meeting agenda. Respectfully submitted, Ian Richey Assistant Planner cc: Applicant John A. Tegeder, R.A. Ed Lachterman Director of Planning Town Supervisor TOWN OF YORKTOWN PLANNING DEPARTMENT Albert A. Capellini Community and Cultural Center, 1974 Commerce Street, Yorktown Heights, New York 10598, Phone (914) 962-6565, Fax (914) 962-3986 Crompond / Croton Heights / Huntersville / Jefferson Valley / Kitchawan / Mohegan Lake / Shrub Oak / Sparkle Lake / Teatown / Yorktown / Yorktown Heights To: Planning Board From: Planning Department Date: January 10, 2025 Subject: ZBA Referral #39/24 SBL: 16.17-4-20 & 22 ____________________________________________________________________________________ The Applicant is requesting a variance to combine two 5,000 square foot lots to create a new 10,000 square foot lot, where 20,000 is required in the R1-10 zone. Currently the two 5,000 square foot lots contain septic systems for two adjacent existing homes each on 10,000 square foot lots. Both septic systems would be abandoned to create the new lot and all three single-family homes would be connected to the sewer system. See attached map. The result of the requested variance will be one additional new residence on a substandard lot. Approval of this application may also create additional required variances for the existing homes as they currently contain 15,000 square feet when combined with their respective septic system lots, but would only be 10,000 square feet each without those lots. Respectfully submitted, Ian Richey Assistant Planner RECEIVED 1+;v' Zoning Board .of Appe ceTownofYorktownwww.yorktownny.org nPr VT Building J7 1 own Hall, 363 Underhill Avenue, Yorktown t leights, NY 10598 TOWN 1-el.(914)962..-5722 ext.2-33 Fax(914)962-1731 E mail: building@yorktownny.org OF Y RKTOWN NY application for a Zoning Variance Please legibly complete all lines on the application)- Office use only i Application#: Z Fee Paid: l Date:cY Received b A total of 6 copies of the following are to be submitted to the I.egal Assistant Application Form Notice of Denial A survey map or plot plan showing all existing and proposed buildings and structures All data relating to the variance Please check with the Building Department to determine if you need to fill out an Environmental Assessment form* F<:e of $210.00 Date: All items (1-9) must be completed 1. Address of Subject Property: C 57q 2. Premises located on the Ll`-1 5T side of 4^p oc j l North South,Fast,West) Street, Road Drive) near Q 7 L A VP3. Section _ P_Block Lote r 4. Date the title of premise was acquired by the applicant J --`y'l a CU I 5. The same premises isnow improved with a Type of Building 6. The Variance Requested isasfollows: ino(n) ~'\--\zoning district. 7. 'FelephonoNumber(Home) 8. F.-mail J 0. Address ofApp|ioan1/ }vvner Name of Applicant (please print) Sig ature 6fA plicantJ Date Name of Owner (if not applicant) Signature 06ww nZ Date Z PROPOSED PROJECT Properties at 3301 & 3307 Lookout Street both have their septic systems on a 50x100 lot behind their properties, both fronting on Hollywood Street. We propose to abandon the septic systems, then tie the two homes on Lookout Street into the Town sewer system. At this point, we would like to merge the two 50x100 lots to create a 100x100 lot on Hollywood to build a single-family home on. LETTER OF AUTHORIZATION DATED: May 8, 2023 RE: AUthori7atIon to Panbar Obtvtt,LLC,as contract vendee To the Town of Yorktown Town Board,Planning Board, Zoning Board, all town officials: We, the undersigned, the owners of the respective properties appearing below are signatures hereon,are hereby authorizing the Panbar.l; t me, LLC,as contract vendee, to appear before the Yorktown Town Board, Yorktown Planning'Board,the Yorktown Zoning Board, and any other boards and town officials to make applications to facilitate subdivisions of portion of our respective properties which are to be merged into a separate lot. Panbar t OnP„ LLC is a contract vendee pursuant to a certain Contract of Sale,dated October 26, 2020,by and between the said contract vendee and John J. Marone,Rita L. Marone and Mauricio Cadavid The authorization granted hereunder will expire on June 30, 2025. JNVi J.Maron Mauricio Cadavid 33(17 Lookout Street 3301 Lookout Street Mohegan Lake,NY 10547 Mohegan Lake,NY 10571 Rita L.Marone 3307 Lookout Street Mohegan Lake,NY 10547 se•. own of Yorktown Bgildin6q Department Ff E Town{call,3 Under ill Avenue, orktown Hells NY 10598 Qnin9 erel.(914)962-5/22 ext.233 Fax 91d)962••1731 Dara Of Appeal Notice of Denial OCT 0 20243 s Off1C nn To: ,John Barile Date: October 8, 202T4'W/V pF yOR Regarding: New Single Family Dwelling KTD IV /Vy Name of Applicant- John & Rita Marone Location of Proposed Use/ Development: Lookout St Tax#: Section: Block: Lot(s): 16.17-4.-2.0&22 Type of Application: Building Permit (X) Special Use Permit () Type of Proposed Use: ( } Other Zoning District: R1-10 Please Take Notice that your application is denied on the following grounds: This is an application to combine two (2) lots to create: one (1) single lot that will require a variance for total amount lot area of 10,000 sgUare feet where 20,000 square feet is require: as per section 300-21 and Appendix A of the Town Zoning Code. Please Take Further Notice that it is the right of the property owner or his/her authorized representative to appeal this determination to the Town of Yorktown Zoning Board of Appeals by applying for a use variance, area variance, or interpretation of the applicable section of local law. Appeals applications are available at the Building Department and at the Town web site at t Assistant Building Inspector Steven Fraietta LOCATION MAP NOT TO SCALE NOTE: 1. THIS IS NOTA SURVEY. ALL SURVEY INFORMATION SHOWN ON THIS PLAN HAS BEEN TAKEN FROM SURVEY MAP PREPARED BY NAME OF SURVEYOR, DATED XX/XX/XX, LAST REVISED XX/XX/XX. THE ENGINEER ASSUMES NO RESPONSIBILITY FOR ITS ACCURACY. IZX::.. rr , X U \( 0/ + 531 2 A i j m sza.s 3NSN015 525,7 iv 4.3 oaKDe 52kdI. r S 86 / 5' 00" E\ y x 5 a_s S U z 11 Azaa / 00.00'' m z zU 74xu I / o oI O O I oz CO O qtgI r r < f IJT CD Q j w E I O N lcmNJn 1 1 s rn $ v SMPROPOSED 1' PPER WATER SERt?!Gg _ j I I Sv o1 iM l 3N I I ED 4 w Ipko N 86' 75' '00"W v + / b c N IX510.0 f Iib O b r a SUTF & coNCRETE WALK A1_1 PROPDSED4' PVC H-r$E SEWER, o ` 32.8 10 FT SEWER EASEMENT L8" 9+0 m II i + ( 0.0' LO' L+— S PRovosED a' Pt C EWER I: — o ` •^ W0LS$ -- —_-5+ HOUSE S - J IX -- I PROPosED a— L Ii+L _ l PIP HOUSE SEWER!} D0-4--------------- s w i CO v- v, < n ,00'00/ I a z i1 ,00;51 099 Q) -I.," m '!'Corn -Vinyl NE U1 I o, n s I I I SITE DATA: OWNER/DEVELOPER: PROJECT LOCATION EXISTING TOWN ZONING: PROPOSED USE: TOWN TAX MAP DATA: SITE AREA: SEWAGE FACILITIES: WATER FACILITIES: PANBAR REALTY, LLC 361 ROUTE 6 MAHOPAC, NY, 10541 HOLLYWOOD STREET YORKTOWN, NY, R1-10, ONE -FAMILY RESIDENTIAL CLASS, DESCRIPTION 16.17-4-20,16.17-4-22 10,000 SF PUBLIC SEWERS PUBLIC WATER FACILITIES RECEIVED Zoning Board of Appeals Office OCT 3 0 2024 TOWN OF YORKTOWN, NY 0 5 10 20 s . SCALE: 1"=10'-O" SAFE DIG Before You Dig, Drill or Blast! CALL US TOLL FREE Bil m1AOu98 nW NYfldtfl.l Code Rule 153 myulow no less Vann—king days nohw, but not more 9,onm. do, non., tlg !ly wyo,kcmn a, MN U O a iON 00 P. u1r F- 0 0000 y Mo c r•M y O V Cd a O A> O cd w U N 0000 U w N j I'D z fvq, CA N p UI I N Q 1:4 Z6 W C II 3 rA MN 0000 W W l H r O U1 n Z z rA rA 0 C) a w a o 0 H N a O 505 DISTANCE ALONG BASELINE'(FT) SWWR SERVICE LOT 6-1 VERT. SCALE: 1" = 4 HORIZ. SCALE: 1 20 525 515 4" PVC SDR 35--," 529+00 0+50 1+00 DISTANCE ALONG BASELINE (FT) 520 SWWR SERVICE LOT 6 VERT. SCALE: 1" = 4 HORIZ. SCALE: 1" = 20 Z O 515 \ Q V - \ \ Wss J LU 510 _ Ss SS 4" PVC SDR 35 ssl ct JO M O WM M C N r': T W Lc) LC) LO M M N 0+00 0+50 1+00 1+46.73 DISTANCE ALONG BASELINE'(FT) SWWR SERVICE LOT 6-1 VERT. SCALE: 1" = 4 HORIZ. SCALE: 1 20 525 515 4" PVC SDR 35--," 529+00 0+50 1+00 DISTANCE ALONG BASELINE (FT) 520 SWWR SERVICE LOT 6 VERT. SCALE: 1" = 4 HORIZ. SCALE: 1" = 20 Z O 515 \ Q V - \ \ Wss J LU 510 _ Ss SS 4" PVC SDR 35 ssl C) 505 a Nt w 0606 rO O Lo toL0LO W Lc) Ito 0+00 0+50 0+58.87 M 500 C) 00 aw MN 4T WMMM N r O O II rV rn o0 0+00 0+50 1+00 1+50 1+70.01 P DISTANCE ALONG BASELINE (FT) c i W SWWRSERVICE LOT 6 E. U a VERT. SCALE: 1" = 4 A o HORIZ. SCALE:" 1" '= 20 Q a I------ FINISHED GRADE 6" DIA. PVC THREADED CAP AT GRADE y ° o a ° aa 6" DIA. PVC SDR -35 I p a I L_— -- ---4 ACCESS FRAME & COVER PATTERN NUMBER i MIN 6" THICK CONCRETE 4153 AS MANUFACTURED BY CAMPBELL PAD TO EXTEND MIN. 12" FOUNDRY COMPANY OR APPROVED EQUAL I ACCESS FRAME OUND ALL ES OF 10" PAVEMENT 2 6" x 8"0 W" BRANCH 8" DIA. PVC SDR -35 b — CAPPED END SEE PLAN FORINVERT FLOW 8" DIA. PVC SDR35 SEWER CLEANOUT DETAIL AT GRADE 6" DIA. PVC THREADED CAP 6"- 314" CRUSHED STONE UNDISTURBED EARTH ACCESS FRAME & COVER DETAIL FOR CLEANOUT UNDER PAVEMENT NOTES: 1. Clean -outs shall be spaced at minimum 50 ft intervals and/or at all changes in vertical and horizontal alignment. 2. All fittings to be white H.D. As manufactured by GPK Products Inc. or approved equal. GRAVITY SEWER LATERAL CLEAN-OUT DETAIL NOTE: 1. THIS IS NOTA SURVEY. ALL SURVEY INFORMATION SHOWN ON THIS PLAN HAS BEEN TAKEN FROM SURVEY MAP PREPARED BY NAME OF SURVEYOR, DATED XX/XX/XX, LAST REVISED XX/XX/XX. THE ENGINEER ASSUMES NO RESPONSIBILITY FOR ITS ACCURACY. NOT TO SCALE PROPOSED 4"0 PVC SDR -35 OR DIP SANITARY SEWER SERVICE LATERAL CONNECTION 4'0 WYE BRANCH SIZED TO FIT MAINLINE PROPOSED SANITARY SEWER MAIN FLOW III FLOW SLOPE 0.4% MIN PLAN FT UNDISTURBED OR COMPACTED EARTH _ PROPOSED SANITARY SEWER MAIN NOTES: 1. Provide cleanouts as required (see detail). 2. Contractor to follow manufacture's installation guide. 3. The contractor shall be responsible for protecting all persons during construction from harm in accordance with all applicable codes, rules & regulations, standards and good practices. 4. Contractor to notify town of Cortiandt 48 hours in advance for trench inspection. 5. All fittings to be white H.D. as manufactured by GPK Products Inc. or approved equal. 6. For backfilling requirements of sewer service see "Sewer Main/Sewer Service Trench Detail". 6" MIN. BED OF 314" WASHED GRAVEL OR CRUSHED STONE UNDER SEWER SERVICE LINE AND ABOVE PIPE 30° OR 45° BEND PROPOSED 4"0 PVC SDR -35 OR DIP SANITARY SEWER SERVICE LATERAL CONNECTION (2.0%- MIN. PITCH) 4"0 WYE BRANCH SIZED TO FIT MAIN LINE 314" WASHED GRAVEL OR CRUSHED STONE ALL AROUND SECTION S -x SEWER CONNECTION TO PROPOSED MAIN -LINE DETAIL NOT TO SCALE DISTANCE ALONG BASELINE (FT) SWWR SERVICE LOT 6-3 VERT. SCALE: 1 °' = 4 HORIZ. SCALE: 1" = 20 EXISTING SEWER ASSUME DEPTH) PERMANENT PAVEMENT 12" TEMPORARY PAVEMENT 12" TRENCH WIDTH) FINISHED GRADE SAW CUT PAVEMENT Qa" a a a 1 2" ASPHALT CONCRETE TOP COURSE -TYPE 6F NYSDOT ITEM NO. 403.1701 TACK COAT EXPOSED EDGES, (TYP). 4" ASPHALT CONCRETE TRENCH WIDTH _ BINDER COURSE - TYPE 3 APPROVED BACKFILL NYSDOT ITEM NO. 403.13 MATERIAL , COMPACTED SUBBASE COURSE NYSDOT ITEM 304.05 NOTE: 1. Pavement layer thickness shown are minimum values and shall match existing if greater. R -X ROADWAY PAVEMENT REPLACEMENT DETAIL NOT TO SCALE i C) 00 aw w Ch U) FF F- F rt O II rV rn o0 UA 75 3 Con P c i W ai C) E. U a A o 00 Q a V•p a i C) 00 z Mw FF F- F 0 O II s, o0 UA 75 3 Con P c i W ai C) Y Oeti A Y 00 V•p a I.I. wg U o' Hi 00 A R 4 e y W N Y U d w I tn N If C) z Mw FF F- F 0 II o0 UA 3 Con c i ai C) p 0 A w 00 If SAFE DIG Before You Dig, Drill or Blast! ChLL 115 TOLL FREE 811 m1A MU9 7862 NY lntlustrial Code ..ff.requrasnoleaseft. Mm wadtlnB Gaya notira, Wt..t.. rqMainrendaysnotice. u/ a aareya","rwk°om WO C) z Mw FF F- F 0 II o0 UA 3 Con i ai C) p a A a 00 SAFE DIG Before You Dig, Drill or Blast! ChLL 115 TOLL FREE 811 m1A MU9 7862 NY lntlustrial Code ..ff.requrasnoleaseft. Mm wadtlnB Gaya notira, Wt..t.. rqMainrendaysnotice. u/ a aareya","rwk°om WO z r 1. V FF F- F 0 3 QUA i ai C) j a Mw a a o o' Hi SAFE DIG Before You Dig, Drill or Blast! ChLL 115 TOLL FREE 811 m1A MU9 7862 NY lntlustrial Code ..ff.requrasnoleaseft. Mm wadtlnB Gaya notira, Wt..t.. rqMainrendaysnotice. u/ a aareya","rwk°om WO Town Board Ref. Chapter 300 - Tobacco TOWN OF YORKTOWN TOWN BOARD Resolved, the Town Clerk is authorized to refer out to appropriate agencies for their review and/or recommendation a proposed amendment to Chapter 300 entitled “ZONING,” regarding a Tobacco Control Law. Further Resolved, the Town Board declares its intent to act as Lead Agency. We are transmitting the following referral for your review and recommendations and ask that you respond back to the Town Clerk by February 7, 2025. TO: Westchester County File Planning Department / Board Town Clerk Dept. of Public Works ABACA Dept. of Health Building Inspector Parks & Recreation Community Housing Board Environmental Facilities Conservation Board Soil & Water Fire: Lake Mohegan Yorktown New York State Highway Dept. DEC New Paltz (Region III) Open Space Committee DOT Planning Dept. / Board (6) Parks & Recreation Police Dept. Public Safety Committee NYC DEP Recreation Commission Army Corp. of Engineers School District: Yorktown Bordering Municipality Lakeland Town of Cortlandt Town Attorney Town of Ossining Town Board Town of Somers Town Engineer Town of Putnam Valley Tree Conservation Advisory Committee Water Department HV Gateway Chamber of Commerce Wetlands Inspector Other Yorktown Land Trust Other – Zoning Board of Appeals FROM: DIANA L. QUAST, YORKTOWN TOWN CLERK, MASTER MUNICIPAL CLERK SUBJECT: We are transmitting the following: Proposed Local Law amending Chapter 300 – Tobacco Control Law and EAF DATE: January 15, 2025 Application/Petition Report Drawings Permit Application EAF SEQRA Scope EAF Addendum Other – Proposed Local Law FOR YOUR: Information Review Comment A LOCAL LAW enacted by the Town of Yorktown entitled “Tobacco Control Law” Section I. Statement of Authority. This local law is authorized by the New York State Constitution, the provisions of the New York Municipal Home Rule Law, the relevant provisions of the Town Law of the State of New York, the laws of the Town of Yorktown and the general police power vested with the Town of Yorktown to promote the health, safety and welfare of all residents and property owners in the Town. Section II. Purpose. The purpose of this local law is to restrict the sale of tobacco, vapor and related products on a going- forward basis and limit the concentration of tobacco retail dealers and vapor products dealers within the Town. Section III. There shall be a new Article XXXII, entitled Tobacco, Vapor and Related Products, as follows: § 300-262 Definitions. When used in this article, unless otherwise expressly stated or unless the context or subject matter otherwise requires, the following words shall have the meanings therein: ADVERTISEMENT Words, pictures, photographs, symbols, graphics or visual images of any kind, or any combination thereof, which bear a health warning required by federal statute, the purpose or effect of which is to identify a brand of a tobacco product, electronic cigarette, or vapor product intended or reasonably expected to be used with or for the consumption of nicotine, a trademark of a tobacco product, electronic cigarette, or vapor product intended or reasonably expected to be used with or for the consumption of nicotine or a trade name associated exclusively with a tobacco product, electronic cigarette, or vapor product intended or reasonably expected to be used with or for the consumption of nicotine or to promote the use or sale of a tobacco product, electronic cigarette, or vapor product intended or reasonably expected to be used with or for the consumption of nicotine. ELECTRONIC CIGARETTE An electronic device that delivers vapor which is inhaled by an individual user, and shall include any refill, cartridge and any other component of such a device. ELECTRONIC CIGARETTE DEALER A person or entity engaged in the sale of Electronic Cigarettes. SMOKING PARAPHERNALIA Any pipe, water pipe, hookah, rolling papers, electronic cigarette, vaporizer or any other device, equipment or apparatus designed for the inhalation of tobacco or nicotine. TOBACCO PRODUCTS One or more cigarettes or cigars, bidis, chewing tobacco, powdered tobacco, nicotine water or any other tobacco products. TOBACCO RETAIL DEALER A person or entity engaged in the sale tobacco products. VAPOR PRODUCT Any noncombustible liquid or gel, regardless of the presence of nicotine therein, that is manufactured into a finished product for use in an electronic cigarette, including any device that contains such noncombustible liquid or gel. “Vapor product” shall not include any device, or any component thereof, that does not contain such noncombustible liquid or gel, or any product approved by the United States Food and Drug Administration as a drug or medical device, or manufactured and dispensed pursuant to Title V-A of Article 33 of the New York Public Health Law. VAPOR PRODUCTS DEALER A person or entity engaged in the sale of vapor products. § 300-263 Regulation of Tobacco, Vapor & Electronic Cigarette Dealers. (a) Notwithstanding any provision of the Code of the Town of Yorktown to the contrary, Tobacco Retail Dealers, Vapor Products Dealers and Electronic Cigarette Dealers shall be a permitted use in, and only in, commercial zoning districts, provided that any part of the property line of the Tobacco Retail Dealers, Vapor Products Dealers and Electronic Cigarette Dealers business is not located within 1,500 feet from the nearest point of the property line of a school, playground, child-care facility, family day-care home, youth center, church, community center, recreational facility, and/or park. (b) The Town Board intends that this section 263 shall apply on a prospective basis only, and the provisions of this section shall not apply to any Tobacco Retail Dealers, Vapor Products Dealers and Electronic Cigarette Dealers licensed by the Commissioner of Taxation and Finance legally operating in the Town prior to the enactment of this article. § 300-264 Advertising and Visibility. Notwithstanding any provision of the Code of the Town of Yorktown to the contrary: (a) No person, corporation, partnership, sole proprietor, limited partnership, association or any other business entity may place, cause to be placed, maintain or to cause to be maintained, smoking paraphernalia or Tobacco Product, Electronic Cigarette, or Vapor Product intended or reasonably expected to be used with or for the consumption of nicotine advertisements in a store front or exterior window or any door which is used for entry or egress by the public to the building or structure containing a place of business within one thousand five hundred feet of a school, playground, child-care facility, family day-care home, youth center, church, community center, recreational facility, and/or park. (b) Any person, corporation, partnership, sole proprietor, limited partnership, association or any other business entity in violation of this section shall be subject to a civil penalty of not more than one thousand dollars for a first violation and not more than two thousand dollars for a second or subsequent violation. Section IV. Severability. If any part or provision of this Local Law or the application thereof to any person or circumstance be adjudged invalid by any court of competent jurisdiction, such judgment shall be confined in its operation to the part or provision or application directly involved in the controversy in which judgment shall have been rendered and shall not affect or impair the validity of the remainder of this Local Law or the application thereof to other persons or circumstances, and the Town Board of the Town of Yorktown hereby declares that it would have passed this Local Law or the remainder thereof had such invalid application or invalid provision been apparent. Section V. Repeal. All ordinances, local laws and parts thereof inconsistent with this Local Law are hereby repealed to the extent of such inconsistency. Section VI. Effective Date. This Local Law shall take effect immediately upon filing in the office of the Secretary of State in accordance with Section 27 of the Municipal Home Rule Law.