2014-07-31 CONCOM-min - Laserfiche WebLink

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structure and the estimated seasonal high water table. The construction should be inspected by a design professional and as built drawing should be submitted to the Town Engineer. During construction, erosion and sedimentation control procedures should be in place. This should include a wheel-cleaning area for construction vehicles.” Mr. Bitsko asked for additional information in the operation and maintenance plan including better detail for each best management practice. Motion made and seconded to continue the hearing to August 18, 2014 at 7:00 pm at the request of the applicant, 4-0 in favor. 7:50 pm Hearing – 66 Munroe Road, NOI DEP# 201-946, BL 904 Applicant: Ying Chen Raze and rebuild a single-family dwelling and paved driveway within the 100- foot Buffer Zone to Bordering Vegetated Wetland Present for the Applicant: Rich Kirby, LEC Environmental Consultants and Ying Chen, Homeowner Mr. Kirby proposed demolition and construction of a single-family dwelling. The proposed house would be further away from the wetland to remove the house from the 25-foot buffer zone. A portion of the house is within the 50-foot buffer zone and the 100-foot buffer zone. An infiltration system and re- vegetation plan are proposed under this project. Mr. Kirby explained the house shifting to the north about 8 feet to avoid any issues with the sewer easement on site. Also, the shed will be removed from the site. Comments from the Commission as follows: Ms. Miller read an interdepartmental comment from zoning that this project proposal will be going in front of the Zoning Board of Appeals on August 14, 2014. Ms. Miller read the engineering report which states, “This project is a single-family dwelling, to be razed and replaced. The proposal shows construction on a sanitary sewer easement. Engineering recommends against approval of this project as shown. The building envelope appears to be on the easement line. This entails a substantial embankment on the easement. The sanitary sewer is relatively shallow. It does not appear that this work could be done without damaging the sewer. Soil test results are shown on the plan. Calculations are responsive. New impervious area is offset with a subsurface infiltration system. The calculations show that the rates and volume of runoff after construction are less than existing conditions for the design storms. The design provides greater than 2 feet distance between the bottom of the infiltration structure and the estimated seasonal high water table. If approved, recommended conditions follow. The construction should be inspected by a design professional and as-built drawing should be submitted to the Town Engineer. During construction, erosion and sedimentation control procedures should be in place. This should include a wheel-cleaning area for construction vehicles. Mr. Langseth will do a site visit. Mr. Kirby will investigate additional mitigation in other areas around town and submit a revised plan.