3/1/2001 CONSERVATION COMMISSION Minutes

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i . mr.. Sherman reported the David Sharpe Dedication service has been rescheduled for April 28, 20ol at 10 : 00 a.m. . MACC Annual Meeting - acknowledged. 7 :40-Board of Selectmen, for a bike path, a continuance from February 15th, a Notice of Intent. Mr. Sherman reported this matter had been continued for the purpose of reviewing details of the retaining wall . The Chairman recognized Norman Hares, BSC, representing the Selectmen, Tower. of Mashpee. He provided a visual of the proposed six tenth of a mile bike path extending from the Police/Fire complex to old Barnstable Road, joining Route 151 on the Horth side, all within the right of way of Route 151 . Mr. Hayes made references to the location of the Quashnet Raver which runs north to south under Route 151, a fifty foot culvert and a concrete head wall, extensive Bvw, .inland bank, and buffer area. The trees within the thirty foot right of way have been removed under Chapter 8 , state Tree Act. Mr. Hayes provided a diagram showing the proposed wall to be located on the wetland side of Route 181, the purpose of which will be to hold back the fill needed to construct the bike path. In an attempt to prevent erosion, the wall has been engineered so that the wall will be held in place by natural tension tamped soil with grave. base The bike path is eight feet, a two degree slope, the water is intercepted by the culvert and carried down to the catch basin. Mr. Hayes made reference to the location of storm drains. Proposed silt fence and haybales to be placed above the retaining gall . References were made to that area which will remain in it native state. Request has been made to DPW to preserve as many trees as possible in order to maintain a buffer. There will be some cutting, and fill will be required at the slope. Where was some discussion regarding storm water run off. Mr. Hayes stated the catch basin will intercept storm water from Route 151 which currently flows directly into the resource area without any treatment. Mr. Sherman suggested a maintenance schedule protocol be included in the Order of Conditions, to which Mr. Hares agreed t provide complete with weekly construction reports. Mr. Sherman noted the wall construction being proposed has proven to function very well, however he suggested ars engineer stamp be required on the drawing. Mr. Hayes responded the drawings being presented are schematics, and that the final plans will be stamped.