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Application
Area Variance for ZBA October 2011 Scott Spellburg 45 Ellsworth Road Subdivision of Land / RR-3A and LC-l0A Road frontage, density, lot width, lot size, setback relief required Tax .Map No. 265.00-1-2.1, 2.2, and 2.3 Cross Ref. Subdivision Application/Review PB TOWN O~ QUEENSBURY 742 Bay Road, Queensbury, NY 12804-5902 September 9, 2011 Scott Spellburg 45 Ellsworth Road Lake George, NY 12845 RE: Subdivision of Land 45 Ellsworth Road Tax Map Parcels: 265-1-2.I, 2.2, 2.3 Dear Mr. Spellburg: ~<<~ ~~,, 518-761-820 I am writing to you in response to my review of your plans depicting the proposed subdivision of the property referenced above and to document our conversations regarding the same with your agents; Hutchins Engineering. Upon review of the plans submitted to this office, I find that an Area Variance and Subdivision approval will be necessary in order for you to create the proposed subdivision. Specifically, the. designed layout does not meet ali of the requirements of the Rural Residential, (RR-~) and Land Conservation (LC-TO) districts. Relief necessary for your proposal includes` road frontage, density, lot width, lot size, and setback consideration from the'requirements of the RR-3 and LC-10 zones. I understand that. your agents are :preparing the necessary applications. Please note our established submittal deadlines when compiling your application materials. Should you have any questions regarding: the above comments; please. do not. hesitate to contact this office. Sincerely, Town o Queensbury g Brown Zoning Administrator . CB/sh Cc: Hutchins Engineering Lisa Pushor ~~~s~ S~~ ~~~~~~ Area Variance Revised June 2009 General Information ~d ~~~~ 'f AO~~~~ ~~ Tax Parcel ID Number: 2ss.oo-~-2.~, -2.2, ~s • Zoning District: RR-3A and LG90A Detailed Description of Project (includes current & proposed use]: J-LOT RESIDENTIAL SUBDIVISION OF 3 EXISTING PARCELS; HOMEOWNERS' ASSOCIATION TO BE FORMED TO MAINTAIN PRNATE ROAD e ~ . Location of project: 45 ELLSWORTH ROAD 169 Haviland Road Queensbury, NY 12804 Hutchins Engineering Phone: (518) 745-0307 Fax: {518) 745-0308 September 15, 2011 Town of Queensbury Zoning Board of Appeals 745 Bay Road Queensbury, NY 12804 Reference: Subdivision 5-2011, Scott Spellburg, Lisa Pushor (Stone Pointe, LLC) 9-Lot Subdivision - 45 Ellsworth Road Tax Map #'s 265-1-2.1, 2.2, 2.3 Dear Chairman Jackoski and Zoning Board Members: This office along with Van Dusen &Steves Land Surveyors represents Scott Spellburg and Lisa Pushor with respect to a 9-lot residential subdivision of three existing parcels, located at 45 Ellsworth Road. The project proposes to create eight new building lots with a shared drive which will be maintained by the homeowner's association. The project will require several area variances, from the dimensional requirements of the LC-10A and RR-3A zones. Parcel 2.1 (Spellburg, 52.3-acres) is located in the LC-10A zone, while parcels 2.2 (Spellburg 1.3-acres) and 2.3 (Pushor 38.5-acres) are located in the RR-3A zone. The specific relief requested includes: Road frontage on a town road (all lots), Density (Lots 1-4 in LC-10A zone), Lot Size (Lots 2, 3, 4), Permeability (Lots 2, 3, 4), Side Setbacks (Lots 2, 3, 4), Permeability (Lots 2, 3, 4) and Average Lot Width (Lots 2, 3, 4, 6, 8, 9). Enclosed please find 15 area variance submission packages. We respectfully request that this application be placed on the agenda in the month of October. We are hopeful that the application will be reviewed at this first planning board meeting in October, that SEQRA review will be performed and that a positive recommendation will be made to the ZBA with respect to the variance requests. We look forward to discussing this project with the board; thank you for your assistance. Respectf Submitted, c Lucas W. Dobie, EIT Enclosures Cc. Van Dusen &Steves Land Surveyors, Scott Spellburg, Lisa Pushor L.W. Dobie, EIT LWDobie@hutchinsengineering.com Area Variance Revised June 2009 General Information Tax Parcel ID Number: 265.00-1-2.1, -2.2, -2.3 Zoning District: RR-3A and LC-10A Detailed Description of Project [includes current & proposed use]: 9-LOT RESIDENTIAL SUBDIVISION OF 3 EXISTING PARCELS; HOMEOWNERS' ASSOCIATION TO BE FORMED TO MAINTAIN PRIVATE ROAD Location of project: 45 ELLSWORTH ROAD AppllCdltt Name: LISA PUSHOR ~ Address: 29 JAY ROAD WEST LAKE GEORGE, NY 12845 Hofl'le :Phone ' ': SCOTT SPELLBURG Cel I: 45 ELLSWORTH ROAD ~ LAKE GEORGE, NY 12845 Work Phone Fax `` E-Mail: Agen~'sdame: - HUTCHINS ENGINEERING Address; 169 HAVILAND ROAD I QUEENSBURY, NY 12804 Home Phone Cell: Work Phone Fax (518} 745-0307 (518) 745-0308 E=mail THUTCHINS@HUTCHINSENGINE RING:COM STONE POINTE LLC 29 JAY ROAD WEST , LAKE GEORGE, NY 12845 OWner'S Name SCOTT SPELLBURG I Address 45 ELLSWORTH ROAD LAKE GEORGE, NY 12845 Home Phone ~ Cell (518) 685-5013 ~ Work Phone ~ ~~Eax E-mail l I - Town of Queensbury • Zoning Office • 742 Bay Road •Queensbury, NY 12804 • 518-761-8238 Area Variance Revised June 2009 Site Development Data Area /Type Existing sq: ft. Proposed Addition sq: ft. Total`sq. if. A. Building footprint 1,430 22,400 +/- 23,830 B. Detached Garage C. Accessory Structure(s) 460 460 D. Paved, gravel or other hard surfaced area 12,400 s6,15o 78,550 E. Porches /Decks F. Other G. Total Non-Permeable [Add A-F] 14, 290 88, 550 102,840 H. Parcel Area ENTIRE: [43,560 sq. ft. /acre] 92.14 ACRES 4,013,620 4,013,620 4,013,620 I. Percentage of Impermeable Area of Site [I=G/H] 0.3 % 2.2 % 2.5 Setback Requirements LC-10A ZONE SPELLBURG LOT (LOTS 1-4) Area :Required Existing `Proposed Front [1] 100' 196' 140' (LOT 4) Front [2] Shoreline Side Yard [1] 100' 96' S0' (LOTS 2, 3, 4) Side Yard [2] 100' 593' 50' (LOTS 2, 3, 4) Rear Yard [1] 100' 2,880' 150' (LOT 3) Rear Yard [2] Travel Corridor Height [max] 35' <35' <35' Permeability 95% 99.7% 97.5% No. of parking spaces Town of Queensbury • Zoning Office • 742 Bay Road -Queensbury, NY 12804 • 518-761-8238 2 Area Variance Revised June 2009 Additional Project Information Will the proposal require a Septic Variance from the Town Board of Health? No 2. If the parcel has previous approvals, list application number(s): Does this project require coverage under the NYS DEC Stormwater Pollution Prevention Program? YES 4. Estimated project duration: Start Date 04/2012 End Date 11/2018 5. Estimated total cost of project: $2.5 MILLION 6. Total area of land disturbance for project: 7.25 ACRES Floor Area Ratio Worksheet FLOOR AREA RATIO (FAR) -- The relationship of building size to lot size, derived by dividing the total building floor area by the lot size in square feet, yielding a percentage. Zoning .District SymboP ' Floor Area Ratio [FAR] Waterfront Residential WR 0,22 Commercial Moderate CM 0.3 Commercial Intensive CI 0.3 A. The combined area of all square footage, as measure from exterior walls of all structures on the property, including all floors of the structures, garages, basements and attics with more than five (5) feet of ceiling height and covered porches. Building square footage does not include: Open deck, docks and that portion of covered docks extending over water and one storage shed of one hundred twenty (120) square feet or less. Any additional sheds will be included. (See "FLOOR AREA RATIO"). B. Commercial or industrial: the total area in square feet as measured from the exterior of the outside walls of a building or structure, and when applicable, the sum total of all floor areas of the principal and accessory buildings or structures on the project site. Parcel Area s . ft. Existin Floor Area s . ft. see above definition Pro osed Additional Floor Area s . ft. Pro osed Total Floor Area s . ft. Total Allowable Floor Area Area x see above table Town of Queensbury • Zoning Office • 742 Bay Road •Queensbury, NY 12804 • 518-761-8238 Area Variance Revised June 2009 Compliance with Zoning Ordinance (SEE ATTACHED) Requesting relief from SECTION: 179-3-040 , 179-4-050, 183-28 Need relief from the requirement(s) listed below which can not be met by the project as proposed. (Check all that apply] [wetback ^ Buffer Zme ©Lot~Vidth ~OtherROAD FRONTAGE (ALL LOTS}; LOT SIZE (LOTS 2, 3, 4); DENSITY (LOTS 1-4); PERMEABILITY (LOTS 2, 3, 4); LOT WIDTH (LOTS 2, 3, 4, 6, 8, 9) The following questions reflect the criteria for granting this type of variance. Please complete them; use additional sheets if needed. Whether an undesirable change will be produced in the character of the neighborhood or a detriment to nearby property will be created by the granting of this area variance? 2. Whether the benefit sought by the applicant can be achieved by some method, feasible for the applicant to pursue, other than an area variance? 3. Whether the requested area variance is substantial? 4. Whether the proposed variance will have an adverse effect or impact on the physical or environmental conditions in the neighborhood or district? 5. Whether the alleged difficulty was self-created? Town of Queensbury • Zoning Office • 742 Bay Road •Queensbury, NY 12804 • 518-761-8238 4 Area Variance Balancing Test Narrative 1. Neither an undesirable change in the character of the neighborhood nor detriments to nearby properties will be created by the granting of the requested Area Variances. The three lots (lots 2-4 in LC-10 zone) requesting relief from permeability and side setbacks are designed in asemi-cluster layout in which the houses will be constructed on the lower slopes while retaining a rural setting, consistent with the neighborhood. In addition, all of the proposed residences will meet the required property line setbacks (100 feet) to neighboring properties. 2. The benefit sought by the applicant cannot be met by the applicant without pursuing the area variances. The parcels cannot be subdivided into any additional lots .without receiving relief from the road frontage requirements, as there is only 80 feet of road frontage along Ellsworth Road and the requirement is 400 feet per lot. 3. The Area Variance requests could be viewed as substantial with respect to the number of requests and the percentages of relief requested. However, the proposed new building lots create a largely invisible, rural subdivision which utilizes a shared private road. 4. The proposed Area Variances will not have an adverse impact upon the physical or environmental conditions in the neighborhood. The proposed building lots will be constructed over the lower slopes of the parent parcels, will retain the vast majority of the mature forest and the structures will be largely invisible from the road and neighboring properties. Stormwater management practices and Erosion and Sediment Control practices are provided in accordance with NYSDEC requirements. 5. The difficulty is self-created in that it is the applicant's desire to undertake the project. In order to create a subdivision layout which is consistent with the neighborhood and achieves the desires of the applicant, the requested Area Variances are necessary. Area Variance Revised June 2009 Submittal of a stamoed and signed SURVEY MAP depicting existing and proposed conditions shall include the items as noted below. A. -,; ..;GENERAL SHOiNN ON _ SHEET # 1 Title, Name, Address of applicant & person responsible for preparation of drawing ALL 2 Deed ATTACHED 3 North arrow, Tax N1ap ID, date prepared and scale [minimum 1 In. = 40 ft.] ALL 4 Boundaries of the property plotted to scale, zoning boundary S1, S2 5 Principal structures, accessory structures with exterior dimensions S1, S2 6 Site improvements incl. outdoor storage areas, driveways, parking areas, etc.: existing & proposed SP1 -SP3 7 Setbacks for all structures and improvements: existing & proposed SP1 -SP3 8 Elevations and floor plans of all proposed and affected structures N/A B. WATER & SEWER SHOWN`ON SHEET'# 1 Project sewage disposal facilities, design details, construction details, flow rates, and number of bedrooms proposed SP2, SP3, D1 2 Water supply [i.e. well] & septic on adjoining lots with separation distances to existing or proposed on-site water supply and S1 se tic 3 Separation distances for proposed sewage disposal system to well and water bodies SP2, SP3 4 Existing public or private water supply [well, lake, etc.]. Method of securing public or private water, location, design and D1 SP2 SP3 construction of water sup I includin dail water usa e , , 5 Percolation test location and results SP2 C. , PARKING / PERMEABLE'AREAS SHOWN ON SHEET # 1 Number of spaces required for project including calculations and justification: existing & proposed N/A 2 No. of existin parkin spaces, number to be removed, number to maintain and t e of surfacin material e. ., ravel, aved N/A 3 Provision for pedestrian and handicap access and parking: existing & proposed N/A 4 Design details of ingress, egress, loading areas and cutting: existing & proposed N/A 5 Location and character of green areas [existing and proposed], modification to green area, buffer zone to remain undisturbed N/A 6 Lighting, location and design of all existing and proposed outdoor lighting N/A D.. AD£~ITION~,L SITE DEVELQF'f~1ENT,AND MISCELLANEOUS - SHd'1NfV ON SHEET # 1 On-site & adjacent watercourses, streams, rivers, lake and wetlands S1, S2 2 Utility /energy distribution system [gas, electric, solar, telephone]: existing & proposed SP2, SP3 3 Location, design and construction details of all existing and proposed site improvements including: drains, culverts, retaining walls, fences, fire & emergency zones and hydrants, etc. SP1 -SP3 4 Square footage of bldg. area proposed for office, manufacturing, retail sales or other commercial activities: existing & N/A pro osed e Signage: Location, size, type, design and setback: existing & proposed N/A f Waiver Request: provide letter with application requesting any waivers: please reference specific items N/A g Commercial/Industrial Development requires submission of Landscaping, Stormwater Management, Grading & Lighting Plans N/A h Identification of Federal, State or County permits required for the project together with a record of application for all necessary N/A ermits Town of Queensbury • Zoning Office • 742 Bay Road •Queensbury, NY 12804 • 518-761-8238 Area Variance Revised June 2009 Pre-Submission Conference Form f179-4-0401 1. Tax Map ID ~~~~'-~~~~~ ~ ~ ~ ~ ~ ~ , 2. Zoning Classification ~ ~ "~~ /~~ ~ :~ 3. Reason for Review: _,~//~~ .>~;'/G~9C y~j't1~ti% f `~ L~c'~/ ~/ ~/~ ,~~~-G i/.~-=~ 4. Zoning Section #: ~~ G~` ~' ~~~ ~~ -~/-riS"C.. 5. Pre-Submission Meeting Notes; Outstanding Item;~fo Be Addressed Include: Deed~Yes G l I f No enera n ormation complete Yes Site De l t D t C l No ve opmen a a omp ete Yes No Setback Requirements Complete Yes No Additional Project Information Complete Yes No FAR addressed Yes ~ No Compliance with Zoning Ordinance Yes No .Checklist items addressed Yes No Environmental Form completed /ll Yes ~ No Signature Page completed Yes No Staff Representative. Applicant /Agent: Date: ~ ~~ Town of Queensbury • Zoning Office • 742 Bay Road •Queensbury, NY 12804 • 518-761-8238 ** SEQRA LONG FORM BY TOWN OF QUEENSBURY PLANNING BOARD "* Area Variance Revised June 2009 141&4 (11!95{-Text 12 PROJECT I.D. NUMBER 617.20 SEAR Appendix C State Environmental Quality Review • SHORT ENVIRONMENTAL ASSESSMENT FORM For UNLISTED ACTIONS Only PART t-PROJECT INFORMATION (To be completed by Applicant or Protect sponsory 1. APPLICANT /SPONSOR 2. PROJECT NAME 3. PROJECT LOCATION: Municipality Count 4. PRECISE LOCATION (Street address and road intersections, prominent landmarks, etc., or provide map) 5. IS PROPOSED ACTION: ^ New ^ Expansion ^ Modificationlafteration 6. DESCRIBE PROJECT BRIEFLY: 7. AMOUNT OF LANG AFFECTED: Initially acres Ultimate) acres 6. WILL PROPOSED ACTION COMPLY WITH EXISTING ZONING OR OTHER EXISTING LAND USE RESTRICTIONS? ^Yes Q No If No, describe briefly 9. WHAT IS PRESENT LANG USE IN VICINITY OF PROJECT? ^ Residential ^ Industrial ^ Commercial ^ Agriculture ©ParkfForest/Open Space ^ Other Describe: 10. DOES ACTION INVOLVE A PERMIT APPROVAL, OR FUNDING, NOW OR ULTIMATELY FROM ANY OTHER GOVERNMENTAL AGENCY (FEDERAL , STATE OR LOCAy? ^Yes ^NO If yes, Ilat agertdyts) and permit/approvals 11. DOES ANY ASPECT OF THE ACTION HAVE A CURRENTLY VALID PERMIT OR APPROVAL? ^Yes ^ No If yes, list agency name and permitlapproval t2. AS A RESULT OF PROPOSED ACTION WILL EXISTING PERMIT/APPROVAL REQUIRE MODIFICATION? ^ Yes ^ No I CERTIFY THAT THE INFORMATION PROVIDED ABOVE IS TRUE TO THE BEST OF MY KNOWLEDGE Applicantlsponsor name: Date: Signature: if the action is in the Coastal Area, and you are a state agency, complete the Coastal Assessment Form before proceeding with this assessment OVER 1 Town of Queensbury • Zoning Office • 742 Bay Road •Queensbury, NY 12804 • 518-761-8238 Area Variance Revised June 2009 PART 11-ENVIRONMENTAL ASSESSMENT (To be completed by Agency) A. DOES ACTION EXCEED ANY TYPE 1 THRESHOLD IN 6 NYCRR PART 617.4? If yes, coordinate the review process and use the FULL EAF. ^ Yes ^ No B. WILL ACTION RECEIVE COORDINATED REVIEW AS PROVIDED FOR UNLISTED ACTIONS IN 6 NYCRR, PART 817.8? If No, anegative-declaration may be superseded by another involved agency. ^ Yes ^ NO C. COULD ACTION RESULT IN ANY ADVERSE EFFECTS ASSOCIATED WITH THE FOLLOWING: (Answers may ba handwritten, if legible) Ct. Existing air quality, surface or groundwater quality or quantity, noise levels, existing traff(c patterns, solid waste production or disposal, potential for erosion, drainage or flooding problems? Explain briefly: C2. Aesthetic agricultural, archaeological, historic, or other natural or cultural resources; or community or neighborhood character? Explain briefly: C3. Vegetation or fauna, fish, shellfish or wiltllife species, signlflcanf habitats, or threatertetl or endangered species? Explain briefly: C4. A community's existing plans or goals as offictally adopted, or a change in use or intensity dl use of lantl or other nature( resources? Exptaln briefly C5. Growth, subsequent devebpment, or related activities likely to be induced by the proposed action? Explain briefly. C8. Long term, snort term, cumulative, or other effects not identified In C1-CST Explain briefly. C7. Other impacts (Including changes In use of either quantity or type of energy!? Explain br~efly- D. WILL THE PROJECT HAVE AN IMPACT ON THE ENVIRONMENTAL CHARACTERISTICS THAT CAUSED THE ESTABLISHMENT OF A CEA? ^ Yea ^ No E. IS THERE, OR IS THERE LIKELY TO 9E, CONTROVERSY RELATED TO POTENTIAL ADVERSE ENVIRONMENTAL IMPACTS? ^ Yes ^ No If Yes, explain briefly www~. .,r.. r..-uc t cnmmnl rvn ur sic~Nlf=1CANCE (TO be completed by Agency) INSTRUCTIONS: For each adverse effect identified above, determine whether It is substantial, large, important or otherwise significant. Each effect should be assessed in connection with its (a) setting (l.e. urban or rural); (b) probability of occurring; (c) duration; (d) irreversibility; (e) geographic scope; and (Q magnitude. If necessary, add attachments or reference supporting materials Ensure that explanations contain sufficient detail to show that all relevant adverse impacts have been identified and adequately addressed. If question O of Part It wag checked yes, the determination and significance must evaluate the potential Impact of the proposed action on the environmental characteristics of the CEA. ^ Check this box if you have identified one or more potentially large or significant adverse impacts which MAY occur. Then proceed directly to the FULL EAF andlor prepare a positive declaration. ^ Check this box if you have determined, based on the information and analysis above and any supporting documentation, that the proposed action WILL NOT result in any significant adverse environmental impacts AND provide on attachments as necessary, the reasons supporting this determination: Name nt Lead Agency not ar ype Name of Responsi le icer m Lra Agency rt e o Responsi le O icer ignature o espons~ e r ~cer m Lea Agency ignature or vaporer Q , event rom responsi a orricer) Date Town of Queensbury • Zoning Office • 742 Bay Road •Queensbury, NY 12804 • 518-761-8238 Area Variance Revised June 2009 Signature Page This page includes the 1.) Authorization to Act as Agent Form: 2.) Engineering Fee Disclosure; 3.) Authorization for Site Visits; 4.) Other Permit Responsibilities; 5.) Official Meeting Disclosure and 6.) Agreement to provide documentation required. OWNER'S AGENT FORM: Complete the following if the OWNER of the property is not the same as the applicant Owner: SCOTT SPELLBURG /STONE POINTE, LLC (LISA PUSHOR} Designates: HUTCHINS ENGINEERING As agent regarding: / Variance / Site Plan / Subdivision For Tax Ma o.: 26,5. Sectio 1 ,Block 2.1-2.3 Lot Deed Refe e: 17 B ~~ 81~ Page 5/23/2001 Date /~ OWNER SIGNATURE: ,a ,_~~c~~~~9!~%'``~~ DATE: `~ ~ //'/ APPLICANT'S AGENT FORM: Complete the following if the APPLICANT is unable to attend the meeting or wishes to be represented by another party: Owner: SCOTT SPELLBURG !STONE POINTE, LLC (LISA PUSHOR) Designates HUTCHINS ENGINEERING As agent regarding: / Variance / Site Plan / Subdivision For Tax Map,Clo.: 265. Section _1 ,.block 2.1-2.3 Lot Deed Refer rice: 7""" Bo 8 Pa a 5/23/2001 Date, OWNER SIGNATURE: ~~5'~~ -~~,!'%2 g DATE: _~1~ //.v 2.) ENGINEERING FEE DISCL SURE: Applications ay be referred to the Town consult ng ngineer for review of septic design, storm drainage, etc. as determined by the Zoning or Planning Department. Fees for engineering review services will be charged directly to the applicant. Fees for engineering review will not exceed $ 1,000 without notification to the applicant. 3.) AUTHORIZATION FOR SITE VISITS: By signing this page and submitting the application materials attached herein, the Owner, Applicant, and his/her/their agent(s) hereby authorize the Zoning Board or Planning Board and Town Staff to enter the subject properties for the purpose of reviewing the application submitted. 4.1 OTHER PERMIT RESPONSIBILITIES: Other permits may be required for construction or alteration activity subsequent to approval by the Zoning Board or Planning Board. It is the applicant's responsibility to obtain any additional permits. 5.1 OFFICIAL MEETING MINUTES DISCLOSURE: It is the practice of the Community Development Department to have a designated stenographer tape record the proceedings of meetings resulting from application, and minutes transcribed from those tapes constitutes the official record of all proceedings. 6.) AGREEMENT TO PROVIDE DOCUMENTATION REQUIRED: I, the undersigned, have thoroughly read and understand the instructions for submission and agree to the submission" requirements, I acknowledge no construction activities shall be commenced prior to issuance of a valid permit. I certify that the application, plans and supporting materials are a true and complete statement/description of the existing conditions and the work proposed, and that all work will be performed in accordance with the approved plans and in conformance with local zoning regulations. I acknowledge that prior to occupying the facilities proposed, I or my agents, will obtain a certificate of occupancy as necessary. I also understand that I/we may be required to provide an as-built survey by a licensed land surveyor of all newly constructed facilities prior to issuance of a certificate of occupancy I have ~ d and agree to the above. Si , ture [Ap lic, n Print Name Applican Date sig ed ~~'~~~ ~~~}~1~.~ -.~, L,.t~-~i i.tSJ tar` ~ / ' Si nature.[ Print Name{ae~#}-~ Date signed _~- bu ~f~c"e • /42'Sa 'Road ~~~~~r'tsdta , NY 12804 •"518,+751-8238 i ,'~,.~-, nl 9 Y rY 9 0/09/2011 FRI 15:05 FAX 5187454437 Community Development TCJWN ~F ~~FENSStJ~X 742 Bad Road, QttCErisbury, N1' I 2€3Q4-59U'~ 51 ~i-7fi 1.820 i September 9, 201 I Scott Spellburg 4S Ellsworth Road Lake George, NY 12$45 RE: Subdivisaon of Land 45 E1Csworth 12oad ~'ax ,trap Parcels. 2d5-Y-2.~, 2.2, 2.3 1]ear Mr, Spellburg: I am writing to you in response io my review of your plans depicting, the proposed subdivision of the property referenced above and to document our conversations regarding the same with your agents; I~utchins Engineering, Upon review of the plans submitted to this office, I find that an Area Variance and Subdivision approval will be necessary in order for you to create the proposed subdivision. Specifically, the desi,~aed layout does not meet all of the requirements of the Rural Residential, (RR-3} and Land Conservation (1..C-10} districts. Relief necessary for your proposal includes road frontage, density, lot width, lot size, and setback consideration from the'requirements of the RR-3 and LC-10 zones. I understand that your agents are preparing the necessary applications. Please note our established submittal deadlines when compiling your application materials. Should you have any questions regarding the above Gonx7~xlents, please do not hesitate to cozltact this office. Sincerely, Town. o Queensbury "g Srown Zoning ,A,daninistrator Cl3/sh Cc: HulChirls Engineering Lisa Pushor L:1Graig Drowi~1201 l ixunrsii)enial Spellburg 9 9_1 i_doc ' `HOib[L: C)F NA1'L1[~P.[. [.3EALJTY ... A GOOD PLAC); TO LIVE" SI?TTI -rn r ; r3 f~001/002 STORMWATER MANAGEMENT REPORT and STORMWATER POLLUTION PREVENTION PLAN NARRATIVE NYSDEC GP-010-0-001 Prepared for: Scott Spellburg, Lisa Pushor 9-Lot Subdivision 45 Ellsworth Road Tax Map #'s 265-1-2. i, 2.2, 2.3 Town of Queensbury Warren County, New York Prepared by: Hutchins Engineering 169 Haviland Road Queensbury, NY 12804 September 13, 2011 Certification Statement To be signed by contractors performing the site construction. I hereby certify that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the terms and conditions of the most current version of the New York State Pollutant Discharge Elimination System ("SPDES") general permit for stormwater discharges from construction activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I understand that certifying false, incorrect or inaccurate information is a violation of the referenced permit and the laws of the State of New York and could subject me to criminal, civil and/or administrative proceedings. Name: Company: Title: Signature: Each Sub-Contractor or additional Contractors completing site work must also sign below: Name: Company: Title: Area of Work &SWPPP Responsibilities: Signature: Name: Company: Title: Date: Date: Area of Work 8~ SWPPP Responsibilities: Signature: Date: Project Description The project consists of a creating a 9-lot residential subdivision out of three existing tax parcels, totaling 92.14 acres. Lot 2 totaling 3-acres will retain the existing single family residence and eight new building lots will be created out of the remaining 89.14 acres. A 1350± foot private shared gravel road will be constructed to serve the nine lots and will be maintained by a homeowner's association. Development for the subdivision will be situated over the lower 30-acres of the project site, while the upper 62-acres will remain as natural forest. Disturbance for total build-out of the subdivision and road will total 8.8± acres. The project site is located at 45 Ellsworth Road, off of Bay Road in the Tawn of Queensbury, Warren County, New York. Existing Site Conditions Presently, the project site is 0.3% impervious, consisting of the existing single family residence and driveway area. The pervious portions of the site are a mixture of lawn, open space and forested areas. The existing site drainage patterns for the lower 65-acres are easterly towards Bay Road, through four natural drainageways across the neighboring parcel. The uppermost 27-acres drains westerly and easterly to a stream which flows southerly and offsite. Site slopes over the lower 30-acres encompassing the development area range from 3-25%, with the majority of the slopes ranging from 5-15% around the building and roadway areas. Slopes above the project area increase to the range of 20-40%, up to a ridgeline at elevation 820. To the west of the ridgeline, the site slopes westerly to the north-south stream at 10-40%. To the west of the stream, the remainder of the site slopes easterly to the stream at 20-40%. Site soils are mapped as Bice very bouldery fine sandy loam, HSG-B and Bice-Woodstock very bouldery fine sandy loamy which are deep, well drained soils in wooded areas on hillsides and hillcrests on glacial till uplands. Soil test pits encountered fine sand and loamy sand with cobbles and boulders with seasonal high groundwater depths ranging from 28- inches to greater than 48-inches. Existing Conditions Summa Total Project Site Area: 92.14 Acres Buildings Coverage: 1890 SF Driveway: 12,400 SF Total Impervious: 14,290 SF Existing Conditions Calculated Stormwater Runoff from the Site: 1 -year design storm (2.20") 1.19 cfs 0.573 acre-feet 10 -year design storm (3.80") 24.19 cfs 3.754 acre-feet 25 -year design storm (4.40") 38.93 cfs 5.435 acre-feet 100 -year design storm (5.40") 68.22 cfs 8.650 acre-feet Proposed Development Proposed Conditions Summary: Total Project Site Area: New Buildings: Total Buildings Coverage: New Drives & Roadway: Total Drive & Road Coverage: Total Proposed Impervious: 92.14 Acres 22,400 SF (8 new houses) 23,830 SF 66,150 SF 78,550 SF 102,840 SF Proposed Stormwater Manaae_ meet NYSDEC SPDES requirements for stormwater discharges from construction activities in accordance with GP-0-010-01 must be applied to the project. Specifically for single family residential subdivisions that involve soil disturbances of five or more acres of land, a Stormwater Pollution Prevention Plan including post-construction stormwater management practices must developed and implemented. Stormwater management practices are applied in the form of natural vegetated retention areas on each lot. A low infiltration rate of 2-inch per hour over the area of these retention areas utilized in the stormwater models. Stormwater management for the roadway from station 5+50 to the end is applied in the form of a pocket pond with a forebay. The forebay will be excavated to a depth of 2-feet and will provide the required Water Quality Volume for this portion of the road. The pocket pond will be excavated to a 3-foot depth and will have a 3'x3' precast concrete outlet structure. This structure will have a 3-inch diameter orifice installed 6-inches above the base of the pocket pond which will control the normal water level and will allow a controlled discharge of accumulated water during storm events. A 6"x18" notched outlet will be constructed in the top 6-inches of the structure, at an elevation 1.75-feet (21-inches) above the base of the pond which allow a controlled discharge during large storm events. A 3-inch high cast-iron frame and grate will be mortared to the top of the structure which will act as an emergency overflow from the pond during extreme events. Due to site restraints, there is very little room adjacent to the lower portions of the roadway in which to provide large stormwater management practices. This portion of the road will be constructed over an existing earthen drive and will generally retain the existing drainage patterns. Runoff from this portion of the roadway will be captured in a roadside vegetated ditch with rock check dams and will ultimately discharge through the main culvert at the intersection with Ellsworth Road. Runoff calculations have been prepared utilizing SCS TR-20 methodology and HydroCAD analysis software for the 1-year, 10-year, 25-year and 100-year Type-II simulated rainfall distributions. Criteria utilized in the analysis are summarized as follows: Design Storm Events: 1-year, 24hr, Type-II distribution, 2.2" 10-year, 24hr, Type-II distribution, 3.8" 25-year, 24hr, Type-II distribution, 4.4" 100-year, 24hr, Type-II distribution, 5.4" Prouosed Conditions Calculated stormwater Runoff from the Site: 1 -year design storm (2.20") 1.10 cfs 0.494 acre-feet 10 -year design storm (3.80") 23.76 cfs 3.250 acre-feet 25 -year design storm (4.40") 38.20 cfs 4.722 acre-feet 100 -year design storm (5.40") 67.17 cfs 7.742 acre-feet The developed site has been modeled as a series of subcatchments (drainage areas) and ponds, as shown on the HydroCAD drainage diagram. Full results of stormwater runoff computations are attached to this report. The results of the stormwater models show that the natural vegetated retention areas are of adequate capacity to receive runoff from the 100-year storms without overflowing and provide rate and volume reductions for the design storms. Water Quality Volume The water quality volume (WQv} as required by NYSDEC is designed to capture and pre- treat the 90% rainfall event and is calculated as a function of the impervious areas of the drainage subcatchments for the project site. The lower 62.3 acres of the parcels (below the ridgeline} is considered for these calculations. Due to the NYSDEC Runoff Reduction Volume requirements (RRv) through "green infrastructure techniques," the original WQv will be reduced after the RRv practices and credits are applied. Original WQv required: 45,230 CF Runoff Reduction Volume Runoff Reduction Volume (RRv) as required by NYSDEC is calculated as a function of Water Quality Volume and the soil Hydrological Classification. For HSG-B soils, a minimum of 40% of the WQv must be managed through NYSDEC "Green Infrastructure" practices. Original WQv required Minimum RRv required 45,230 CF 18,090 CF Planning for Green Infrastructure NYSDEC requires that Planning Practices for Preservation of Natural Features and Conservation be considered and evaluated for the project layout and stormwater management practices. Specifically these six practices are evaluated as follows: Preservation of Undisturbed Areas The westerly 24.4 acres west of the project area and below the ridgeline (area considered in stormwater modeling} will be preserved as native forest space. In addition, the 30 acres west of the ridgeline will also be preserved as native forest space. Preservation of Buffers The north-south stream which is west of the ridgeline and its surrounding areas will not be disturbed. The closest disturbance is over 1100-feet to the east of the stream. Reduction of Clearing and Grading Approximately'/z of the proposed road will be constructed over an existing cleared area and earthen trail. Shared driveways will be utilized for lots 2 and 3 and lots 1 and 4 which will reduce clearing and grading. In addition, the proposed residences will be constructed over the lower slopes of each respective lot, which will help to minimize the required grading. Locating Develoament in Less Sensitive Areas The proposed development will be constructed over the lower slopes of the parcels, with slopes generally ranging from 5-20%, while the steeper upper slopes will be preserved as forest space. Oven Space Design The subdivision is asemi-cluster, in which the houses will be constructed generally within 300-feet of the private road (lot 1 being the exception}, over the lower slopes of the site. Approximately 54-acres of native forested space will be maintained west of the proposed development. Soil Restoration Vegetated areas which are compacted through earthwork processes around the houses will undergo soil restoration treatments to restore the long-term infiltration over these areas. Runoff Reduction Volume Practices for Proiect Original WQv Required: 45,230 CF Minimum RRv Required: 18,090 CF (40% of WQv) Area Reduction Practices: 30,675 CF (24.4 ac. upland forest preserved) Impervious Disconnection: 1680 CF (0.51 ac. disconnected roof) Source Control Treatment Practices: 2,465 CF (infiltration, lots 3,4,5,8) Total Provided RRv: 34,820 CF (77% of WQv) Recalculated WQv: 10,410 CF (after RRv reductions) WQv provided in vegetated retention areas, forebay & pocket pond (below main outlet) and after Channel Protection Volume: 21,020 CF Channel Protection Volume Channel protection volume (Cpv) as required by NYSDEC requires the extended detention of the post-developed 1-year, 24-hour storm. Total required CPv: 7840 CF Total retention volume provided in practices: 28,860 CF (for both WQv &CPv) Overbank Flood Control Overbank flood control as required by NYSDEC requires that the peak developed discharge rate from the 10-year, 24-hour storm not exceed the pre-development rate. Existing peak 10-year storm discharge: 24.19 CFS Proposed peak 10-year storm discharge: 23.76 CFS The 10-year storm calculations show that the overbank flood control requirement is met. Extreme Storm Control Extreme storm control as required by NYSDEC requires that the peak developed discharge rate from the 100-year, 24-hour storm not exceed the pre-development rate. Pre-developed peak 100-year storm discharge: 68.22 CFS Developed peak 100-year storm discharge: 67.17 CFS The 100-year storm calculations show that the overbank flood control requirement is met. Town of Queensbury Requirement The Town of Queensbury requires that the peak developed discharge rate from the 25-year, 24-hour storm not exceed the pre-development rate. Pre-developed peak 25-year storm discharge: 38.93 CFS Developed peak 25-year storm discharge: 38.20 CFS The 25-year storm calculations show that the Town of Queensbury requirement is met. Endangered Species In accordance with Part I.D.4 of GP-010-0-001, a letter from the NYSDEC dated September 6, 2011 made the determination that the 9-lot subdivision would not be expected to cause a permanent decline in habit quality that would reduce the likelihood of timber rattlesnakes' den sites being naturally re-colonized from other populations in the area. This letter is included in the appendix of this report. Archaeological Resources and Historic Places In accordance with Part III.A.8 of GP-010-0-001, according to information from the website of the New York State Office of Parks, Recreation and Historic Preservation, there are not any sites that are listed or eligible for listing on either the State of National Register of Historic Places within several miles of the site. Therefore, no specific measures are necessary to avoid of minimize impacts on places listed or eligible for listing. Construction Phase Erosion Practices Practices to be implemented during construction for erosion and sediment control include silt fencing and temporary sediment basins in various portions of the total disturbed area. Silt fencing will be placed across slopes (on the contour) in all areas downgrade of disturbed areas. Temporary sediment traps will be utilized in areas where construction phase runoff concentrates. Temporary Erosion and Sediment Control Measures Erosion and sediment control measures will be incorporated into the construction of the project. These practices will comply with the New York State Department of Environmental Conservation publication entitled "New York Guidelines for Urban and Sediment Control" (the blue book). Separate erosion and sediment controls will be installed for each phase of construction. The following temporary erosion and sediment control devices are to be utilized: Sediment Control Fence Silt Fence shall be used to control erosion from sheet flow on slopes not to exceed 1 on 3. Concentrated flows shall not be directed toward the silt fence. The silt fence must be installed parallel to the contour lines to eliminate drainage along the fence. Temporary Sediment Basin Basins will be excavated below each house site and seeded with ryegrass to accept stormwater runoff from the construction site allowing sediment to settle out. Sediment traps shall be constructed in the location and be of the size and type specified to collect sediment laden stormwater. Temporary Seeding Land that is stripped of vegetation will be seeded -and planted as soon as possible. Any area that will remain cleared but not under construction for 10 days or longer will be seeded with a ryegrass mixture and mulched to stabilize soil until construction resumes. Temporary Diversion Swales Temporary diversion swales shall be constructed either to divert clean stormwater runoff from newly graded areas or to direct sediment laden runoff to a sediment trapping device. Dust Control Measures for dust control during construction shall be implemented as needed. Daily water sprays will be used during dry conditions. In addition to water sprays, temporary mulching, temporary seeding and covering stockpiles with tarps shall be implemented when necessary. Erosion Control Blanket Fabricated straw or biodegradable mesh blankets shall be utilized to protect and temporarily stabilize slopes of 1:3 or greater and applied to graded, topsoiled and seeded slopes. Blankets will be attached with staples or stakes in accordance with manufacturer's recommendations. Blankets on cut slopes and vegetated ditchlines will be maintained in place permanently and allowed to biodegrade. Control of Litter, Construction Debris and Construction Chemicals During the course of construction, the site shall be kept clear of debris and litter which could be transported by water or wind. This material shall be picked up daily and shall be stored in waste debris containers where it will be securely held. All petroleum products or other waste contaminants which are water soluble, or could be dispersed and transported by stormwater, shall be stored in covered containers and be regularly removed from the site and properly and legally disposed of. All petroleum or other hazardous materials shall be stored and handled in conformance with NYSDEC spill prevention and containment requirements. Sequence of Construction Prior to the start of construction, the contractor shall install the sediment control fence along the low side of each area to be disturbed to contain runoff from the construction site. Temporary sediment basins are to be constructed as shown on the plans and shall collect stormwater runoff from all areas of proposed road and utility construction. The temporary sediment basins shall be a minimum of 3600 CF per acre of disturbance. Basins shall allow collected water to filter into the existing soil; if necessary, sediment will be cleaned out of the basins to maintain their infiltrative capability. Following the completion of all planting and the establishment of all grass areas, any collected sediment and sediment control fencing shall be removed. Any debris from the perimeter of the site shall be removed and dispose of all waste material shall be disposed of in a legal manner. Maintenance of Temporary Erosion & Sediment Control Devices The sediment basins shall be inspected at least weekly and after every rain event by the contractor. When 50% of the volume of the trap is full, the contractor shall remove collected sediment and dispose of properly. The contractor shall inspect the sediment control fence weekly and after every rain event and remove trapped sediment and maintain the devices such that they are in good working order. Oueration and Maintenance Plan The homeowner's association will be responsible to provide the maintenance in the forebay, pocket pond, ditchlines and culverts. Maintenance includes trimming of vegetation in the ditchlines, forebay and pond and sediment removal in the ditches, culverts and pond. Trimming should be performed as needed throughout the spring, summer and fall, typically monthly or semi-monthly. Sediment removal and inspection of the stormwater infrastructure should be performed annually. Each respective lot owner is to provide the maintenance needed in order to ensure continuous and effective operation of the stormwater control practices on the respective lots. Maintenance includes mowing and vegetation trimming of the stormwater basins and sediment removal in theses basins. .Mowing and trimming should be performed as needed throughout the spring, summer and fall, typically weekly or semi-weekly. Sediment removal and inspection of the basins and swales should be performed annually or as needed due to surrounding and contributing site conditions. Permanent Erosion Control All pervious areas shall be graded, topsoil installed and seeded or planted as soon as practical, but in no case shall finish graded soils be exposed for more than five days. Seed beds shall be mulched with straw and plant beds shall be mulched with pine bark mulch. Seeded areas on slopes over 1:3 shall be stabilized with erosion control blankets as specified on the plans. Attachments Location Map Soils Map NYSDEC Endangered Species Letter SHPO Website Map Printout RRv Calculations RRv Area Reduction Map Subcatchment Map -Existing Model Subcatchment Map -Proposed Model Draft NYSDEC Notice of Intent Draft MS4 SWPPP Acceptance Form HydroCAD Existing & Proposed Conditions -Type-II 24 hr Rainfall = 2.2" (1-year), 3.8" (10-year), 4.4" (25-year}, 5.4" (100-year) I ,r-,~{.~ I ~ - fl rJr~ /,t _ •~ ~ 11 r. - j. / :z~-~ s' _. .:~ ~- _ l ri !, i~-- ~ _ ` i ~~ ~ ~~ ICI fiE gc~razs ~~~~ ~" ,, ~ ~' `-- i~~ ~ A' `A ~ L~ 52,t~~ I ~ ~ ~~ I ~ C I ~ ~ (~R~1~ ~ ~~}~ / /i'~i X11 /~~l ~~~ ` / ~ I ~ -~~ ~ f'.~ ~_. ~~ _~i ~~y~: ~. r ~~~~ ~ ~- _~/ _) n ~ I _ 1+ n ~ r I % ~-- ass. 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Ip '~(zv % r ~ ~ l l~ ~. -~ I <~ ~~ i l~ `. _ . ~ ~~~~~~ppprne ;, \`~1`~E.. ~/~7 ~ ~ 0~,~~ '~/~/i~ 1 ,~ ~ ~ ~?`_;~_ r; `~, ~ -4.fl l`, ~~.,. i'~Id'Agsyai*w ~• •,i ~_~ ~~G .. LOCATION MAP NOT TO SCALE New York State Department of Environmental Conservation Bureau of`VYiildl'rfe 232 Gaff bourse R~oad~ VVarxensburg, NY 12885 Phone: (5:18y 623-1200 • ~A7(~ (518) f23-3fi03 ~~ Website: www.dec.n~::gov Joe AMarte~s Forruniss~arrer September 6; 20I 1. Mr: Lucas Dobie Hutchins .Engineering l 6~ Haviland Road Queensbury, NY 12$04 Re: Endangered and. Threatened Species Deferminatian Ellswortb Roads Parcel Ili #s 265.-1-2.1,..265.-1-2.2, and 265.-1-2.3 Town- oI Qgeensbitryy, Warren County, New York Dear Mr. I?obie: In response to yc»ur September l:, 241 l request ~ performed an endangered and threatened species detetxnik;a~on for the above parcels located iri the Tawri of Queensbury, warren County. Accardiug to the blew York State Natural l-Ieritage Database, these parcels. are Yocated' within the clieele-~a~e fot tie state threatened Timber Rattlesnake (Crotafur hvrridres). 'T`tte kTia~ber lrattle~ttake [sprimarily a forest-feeding` snake: In the northern part of their range; Tunber Rattlesnakes' are generally found on mountainous slopes (below 1,3t3Q ft) with steels ledges, talus stages,. and rocky outcroppings. iat,, ur"elose to, deciduous forests. Den. sites are generally art steep slopes with rocky, autcrappiitgs >:ar basking exposure: Males and non-breeding females spend most of their active. season to ~+roodtazids fo~ragitg for sm~lY mammals. 11~fales tend to: disperse farther and are more likely to be found in densely wooded: terrain'. A timber rattlesnake den. was found approximately one chile from these parcels: in the 1930'x. Follow ap surveys in 198U failed to &nd any'snakes. It is the opinion of the DEG that the rattlesnake, den an ;French Mountain is likely extirpated, and these parcels. ara far enough .away from the Bert that development would not be e~tpeeted to cause a pen anent decline in habitat quality that would reduce the likelihood of this den site being naturally re-cotarr2ed from other populations in the area. I would like to thank Hutchins Engineering for your interest in protecting New Yorkss natural resources. >f you have any questions please do not hesitate to contact meat (S l 8) 623-1241. Sincerely, r~ ~ ~' .~~ Jed Hayden Wildlife Biologist Psi tie f o f l ~~ ~. I •r~. I 'i r ! S , _• ~ S •"~ a ~ a y 'ti t tS _ .'liet67. `,' ' V-• _ tiJ~~ ~~ ~ ~ Ca 1 a ~ `. _ 5 yc®a ~ 1 . t ~ f . ,) _, . r. v ~_ .fie ~ ; { t _ - . _'- - j IN ~ _ _ ~ .. • ~'~ -:.~~~_-•- •sY ~ '-eft. S~-~i ~ ' »n•. o roc p r ~ y~ • ~ ss I9Q6A ~ ~ ~ Y ' ~~• ~ } , ~I~ } - _n•. .. .. ,. _ i ~ti c~ ..i , t~~~ ra'aT. ,. ~.N.-•. ~. .~P~~t~~RQ~~ pv+~NaR uE3~1V1S1o~t ~-~~ P http: ~~~ww.oprhp.state.ny.us. output, nr_mai13~36~~~'~ 13~~.,jp~, 3 31 ~U 1 1 STORMWATER MANAGEMENT WORKSHEET Project: PUSHOR - SPELLBURG SUBDIVISION Date: Watershed Draina a Area: soiLa DA: 62.3 acres 9/13/11 HSG(s): B 90% Rain (P): 7 (inches) WATER QUALITY VOLUME (before runoff reduction) Rv = 0.05 + 0.009(1) where f is % Impervious Cover: Rv minimum = 0.2 I =Percent Impervious Cover A =Area of Site In Attes (Contnbutlng Area) f. Water Quality Volume (WQv) ~ P•A•Rv/12 DA= 62.30 AI'= 2.35 acres Rv= 0.0839 1 = 3.77207 Applietl Rv = 0.2000 `If soil restoration is not practlced, include conshuction compacted areas as impervious. Original WQv-- 1.0383 ac-ft 45229.80 d 2. Minimum RRv Requfrenrems (when 100% WQv reduction cannot be achieved): RRv = WQv x S with S= 0.55 (A soils) 0.40 (B soils) 0.30 (C soils) 0.20 (D soils) OR weighted HSG average in DA P= 1 inches s= 0.4o AI= 2.35 acres Min. RRv required= 0.4153 ac-ft 18091.92 Gf AREA REDUCTION PRACTICES 3. Ante Reduction Practlees (complete for all applicab/e practices): (area Includes practice and comrlbudng area) • Conservation of natural areas: (contributing AI = 0.00 ac.) Area = 24.40 ac. • Riparian buffers~Rer strips: (contributing AI = ac.) Area = ac, • Tree plantingltree preservation: (contributing AI = ac.) Area = ac. • Total area retluctlon: Total Area Reduced ~ 24.d0 ac. • Total impervious area within area reduction: AI in Retluced Area = 0.00 ac. 4. Subtract total area reduction /rom DA: Remaining Drainage Area = 37.90 ac. Remaining AI = 2.35 ac. 5. Recalculate WQv for site area remaining aker area reductions: Remaining DA = 37.90 Remaining AI = 2.35 ac. Rv = 0.1058 Area Reduced WQv = 0.3342 ac-ft 1 = s.zo 14556.30 cf 6. RunoN reduction volume (RRvI = or/glna/ WQv -area reduced WDv RRv = 0.7042 ac-ft 30673.50 cf 7. Impervious Anaa DJSCOnnacdon: Total tlisconnected impervious area (now considered pervious for RV calculation(s)) Area = 0.51 ac. 8. Recalculate WQv w/th RV modlked for impervious dlsconnecdon: DA = 37.90 ac. Remaining AI 1.84 ac. Rv = 0.09359894 Imperv. Disc. reduced WQv = 0.2956 aC-ft I = a.aa 12877.06 tf 9. Runoff reduction volume =area reduced WQv - Imper. Dlsconrrecdon reduced WQv RRv = 0.0386 aC-tt 1679.24 cf SOURCE CONTROL WQv TREATMENT PRACTICES (from attached worksheet) t0a. Subtotal DA Mbutary to Source COnV01 treatment practices = 4.450 acres 10b. Subtotal Source Control WOv Treatment Volume = 0.0829 ac-ff f Oc. Subtotal Runoff Retluction Volume (RRv}: SUbtOtal ARV) RRV = O 0566 ac-ft TOTAL RUNOFF REDUCTION VOLUME (RRv) 11. Topl RRv provided (ft6 + N9 + t10c/ =Total (RRv) ~ (Area Reduction + Impervious Disconnection + Source Control Measures) 2467.57 cf Total Provided RRv = 0.7994 ac-ft 34820.30 Cf Page 7 of t "~ ~ y i~ C ~ c '~ ~ ~ ~ O C ~ y q ~ 3 Q _T C O rn `~ ~ 0 L in o v ~ m ~ o ° n > ~ o o ~ O N f/1 - - ~ m m ~ aU ~~ m m u > > ~ ~ 0 0 o a ~ ~ O N N - - ~ r°n m ~ aU ~~ m m n > > ~ ~ 0 0 o 0 °c N O 47 - ~ m a m n > 0 0 N O to ai m a m u > 0 0 N ~ ~ ~ ~ LL U U m U m U m U m U m rn ~ o . ~ ~ o N O 11 II 11 II II > > > > a~ ~_ 0 u ~ n u ~ II ~ n ~ ~ V1 !n N N N N N N N N U U U U U f6 f6 f6 l0 f0 N O II II II II II 0 Q Q Q Q Q v C 0 V V ~ ~ ti ~ ~ ~ ~ m a~ N m m m y m m R 0 ~ V y o ~ R! * y t , ~ U U ~ Q~ U U O :7 Y fC f t L ~ :~ ~ a 0 $ 0 a , ` (0 o Ca t •~ 0 0 0 V ` a y o ~ . o L o m m m R 3~ 3 m H N 3 ~ ~ C= o~ ~~ -.. ~ C m a ~ ~ ~ m ~a n C C ~ ~ ` t p WO ~ D I p ~ o ~ y 5 m d ~ > > ~-. ~ o O ~ _ to ~ y ~ m U m ~ m a U a ~~ ~ ~ 0 ° 0 o o o• o 0 0 n u u u n u C7 C3 C7 C7 ~ ~ ~ ~ ~ ~ ~ ~ 0 0 0 0 0 0 0 0 0 0 o a 0 o 0 0 0 0 O O r ~ r O ~ O r O r ~1 V rn ti M ~ n v c0 n ~ N N ~ ~ ~ ~ w m m m m m 0 o ° o u u 0 II II II II II > ~ > > > V V A R O N ~ m ~ o ~ o u > n > ~ ~ N to N N U t6 U t6 m ~ O O O II ~' II ~ II a it ~ II a a~ a~ m c~a to N N >' C ~ ~ ~ O cV0 N tV6 rn g v U v O O V ~ ~ Q m m V ~ a $ n u . °~ 8 y ~ n ~ afOi ~ a m m m E m N o ° ~ tQ ~ o 7 °~ a _~ f6 ~ o ~ 7 s o a ~ E p o~ ~ m te C7 ~ io U a . fC O O 1 ul ~C G C V 7 m O C ~. 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