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Engineering North Country Office 100 Glen Street, Glens Falls, NY12801 P: (518) 812-0513 F: (518) 824-8391 www.chazencompanies.com Hudson Valley Office (845) 454-3980 Engineers Environmental Professionals Capital District Office (518) 273-0055 Land Surveyors Landscape Architects Planners May 10, 2012 Mr. Craig Brown Zoning Administrator and Code Compliance Officer Town of Queensbury 742 Bay Road QueensburyNew York12804 Delivered via email only: CraigB@queensbury.net Re: Sans Souci of Cleverdale Town of Queensbury, Warren County, New York Chazen Project # 91204.15 Queensbury Ref. No: Site Plan 09-2012 Dear Mr. Brown: The Chazen Companies (Chazen) has received the latest submission package from your office for the Sans Souci Restaurant of Cleverdale. The Applicant intends to modify an existing area variance and that was approved in 2009. Submitted information includes the following: Site Plan Set entitled, Church of Our Lady of the Annunciation Parking Lot Expansion, prepared by Jarrett Engineers, PLLC, dated April 16, 2012; A Stormwater Pollution Prevention Plan, prepared by Jarrett Engineers, PLLC; and A Site Plan Application with supporting documentation. Your office has requested that we limit our review to the designanagement and erosion and sediment control items as it relates to compliance to local, Based on our review of the information provided, Chazen offers t consideration: Stormwater Management & Erosion and Sediment Control: 1.The proposed site improvements disturb less than 1-acre of land and will not be subject to NYSDEC Phase II Stormwater Regulations. However, Section 179-6-080 of the Town Code, states that the stormwater drainage plan shall analyze impacts of the project using at least a 50-year return interval storm for commercial projects. The Applicant has not provided calculations for the 50-yr storm. The Applicant shall complete appropriate calculations and submit them in support of the application. 2.This project is also located in the Lake George Park, and will be subject to the requirements of Section 147-11 of the Town code, which reiterates the regulations of the Lake George Park Town of Queensbury Site Plan 09-2012 Sans Souci of Cleverdale May 10, 2012 Page 2 Commission. In conformance with Section 147-11(I)(2)(a), the Applicant had implemented in the previously approved plan the alternate stormwater runoff calculation approach, utilizing a stone storage trench with 1.5 gallons of stormwater capacity for every square foot of new impervious area. However, the current plan no longer includes a storage trench and does noany calculations. The Applicant shall provide appropriate stormwater measures to m from the previously approved and constructed building addition, and address any mitigation needed for the currently proposed plan. Appropriate stormwater calculations shall be provided to verify conformance with code requirements. 3.The applicant has indicated that there will be an overall decrease in impervious area. However, it is unclear from the information provided which areas are being considered pervious versus impervious. According to Section 5.3.11  Sizing, permeable pavers that are subject to traffic exposure cannot be treated as pervious. The Applicant shall provide clarification on the plans to substantiate the impervious reduction. It is recommended that the Applicant provide specific runoff and infiltration data from the manufacturer of the propos& crushed stone parking systems in support of the application. Further review is required once submitted. 4.In accordance with NYSDEC SWDM Section 5.3.11  Feasibility/Limitations, permeable paver systems shall be separated by at least 25 feet down gradient from structures. The permeable crushed stone parking area at the eastern portion of the site is located directly adjacent to the existing building. The Applicant shall consider alternative method of stormwater management or waterproofing methods to protect the structure foundation. 5.Permeable paver systems are highly susceptible to clogging and may be subject to owner neglect. It is recommended that the land owners be educated to ensure that proper maintenance and winter operation activities are performed to allow the system to function as designed. The Applicant shall also include specific long-term maintenance requirements on the plan. Further, no sand should be used during winter snow maintenance operations that sand cannot be used should be employed on site. 6.The Applicant does not depict any erosion and sediment controls on the Modified Site Plan. The Applicant shall incorporate appropriate measures and shall providetails and construction specifications in accordance with the NYS Standards and Specific Control. Conclusions and Recommendations It is our opinion that the applicant should provide clarificatio changes in subsequent plan submissions. R:\9\91200-91299\91204.00 -Town of Queensbury PB Engineer\91204.15 -SP 09-2012-San Souci of Cleverdale\Docs\91204.15 -SP 09-2012 -San Souci of Cleverdale-05-10-12.docx Town of Queensbury Site Plan 09-2012 Sans Souci of Cleverdale May 10, 2012 Page 3 If you have any questions regarding the above, please do not hes (518) 824-1926. Sincerely, Sean M. Doty, P.E., LEED AP Senior Project Engineer cc: Pam Whiting, Town Planning Office Administrator (via email) Keith Oborne, Town Planner (via email) Joel Bianchi, P.E., Senior Director - Municipal Engineering (via email) File R:\9\91200-91299\91204.00 -Town of Queensbury PB Engineer\91204.15 -SP 09-2012-San Souci of Cleverdale\Docs\91204.15 -SP 09-2012 -San Souci of Cleverdale-05-10-12.docx