2017-11-13-CONCOM-min - Laserfiche WebLink

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TOWN OF LEXINGTON, MASSACHUSETTS CONSERVATION COMMISSION MINUTES Monday November 13, 2017 6:30 P.M. Parker Room, Town Office Building 1625 Massachusetts Ave Vice Chair David Langseth opened the meeting at 6:32pm in the Parker Room. Commissioners Present: Duke Bitsko, Dick Wolk, Kevin Beuttell, Ruth Ladd, Alex Dohan. David Langseth Others present: Karen Mullins, Conservation Administrator and Casey Hagerty, Conservation Department Assistant 6:32pm Approve insignificant plan change: 288 Concord Ave, DEP 201-1045, BL 1002 Dan Carr, Stamski and McNary, explained that as the contractor was getting ready to install the drywells, he realized that they were going to have issues getting the necessary separation with the groundwater. They are proposing to use a different type of chamber so that they can achieve the correct separation. Mr. Langseth entered the engineering report into the record. Motion to approve the plan change made by Mr. Wolk and seconded by Ms. Dohan. Vote: 6-0 in favor. 6:36pm Request for Amendment Determination: 45-65 Hayden Ave, DEP 201-1044, BL 1001 Doug Hartnett, High Point Engineering, explained that during construction of the parking lot expansion, they discovered a few issues that they want to address under the current Order of Conditions. The first, is that they need to do some additional material removal in the stream channel in order to get more positive flow characteristics. The second, is that they discovered a damaged culvert on the property. They are proposing to install a three sided box culvert that would improve the quality of the stream crossing. Mr. Hartnett stated that they are asking the commission whether this project could be considered an amendment to the permit or would need an entirely new filing. Questions and comments from the Commission: The commission stated that they felt the additional dredging could be heard as an amendment, but the culvert may need to be a new filing.