2017-05-01-CONCOM-min - Laserfiche WebLink

Browse Search

TOWN OF LEXINGTON, MASSACHUSETTS CONSERVATION COMMISSION MINUTES Monday, May 12017 6:30 P.M. Hudson Room, Cary Hall 1605 Massachusetts Ave Chair Philip Hamilton opened the meeting at 6:30pm in the Parker Room Commissioners Present: Phil Hamilton, Alex Dohan, Kevin Beuttell, Duke Bitsko, Dick Wolk Others present: Karen Mullins, Conservation Administrator and Casey Hagerty, Conservation Department Assistant 6:30pm Informal Hearing- Whipple Hill Stream Restoration Dave Pavlik- Lexington Town Engineer and Denise Cameron- Woodard and Curran Mr. Pavlik explained that the engineering department is in the early stages of planning a stream restoration project at Whipple Hill. This site has been identified as a priority site by the Mystic River Watershed Association. Ms. Cameron stated that the first concern is to remove a stone embankment. The stone wall will be removed and a 1:1 bank will replace it. She explained that they are proposing a 1:1 slope because they are limited in space;part of the project is located on private property and they are attempting to keep the project off the abutter's land. Ms. Cameron told the commission that they are going to explore ways other than rip rap to stabilize the steep slope. She added that a hydrological analysis was done in the area which determined that there would be downstream flooding if they do not remove the stone headwall. Additionally, Ms. Cameron explained that 500 ft. up the trail, a section of the trail is washed out. As part of this project they are proposing to fix this section of the trail using a method known as a"rock sandwich." Questions and comments from the Commission: The commission asked for clarification of where the stream outlets. Ms. Cameron stated that the stream flows under Summer Street in Arlington. The commission asked if the rock sandwich technique is the best method for the trail restoration. Ms. Cameron stated they would be open to exploring the option of a well-built boardwalk if the commission would prefer that.