2014-07-01 CONCOM-min - Laserfiche WebLink

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TOWN OF LEXINGTON, MASSACHUSETTS CONSERVATION COMMISSION MINUTES Tuesday, July 1, 2014 6:30 P.M. Parker Room, Town Office Building 1625 Massachusetts Avenue Chair Joyce Miller opened the meeting at 6:40 pm in the Parker Room of the Town Office Building. Commissioners Present: Joyce Miller (arrived at 6:39 pm), David Langseth, Dick Wolk (arrived at 6:39 pm), Jane Warren and Duke Bitsko Commissioners Absent: Stew Kennedy and Phil Hamilton Others Present: Michelle Morelli, Community Development Department Assistant PENDING MATTERS 6:40 pm Plan change: 149 Adams Street, DEP# 201-922, BL 882, underground propane tank installation Steve Cavallo, Lexington Development was present for this discussion. He gave a description of digging 5’ into the 100’ wetland buffer zone in order to install an underground propane tank. Mr. Cavallo explained two options for locations of the propane tank. Option #1 would require the least amount of trenching and a fill port will be 6” above grade for a truck hose hook up. Mr. Langseth asked if erosion controls were proposed. Mr. Cavallo replied there are existing erosion controls on site. Mr. Langseth commented the stockpiling be covered or erosion control placed in the area of work. Motion made and seconded to approve the plan change as described on the plan with option #1, 5-0 in favor. 6:46 pm Update on non-compliance and extension of Order of Conditions: 9 Tufts Road, DEP# 201-835, BL 793 Mr. Langseth commented the infiltrator unit should either be re-constructed to its original capacity or re-located to the front yard. Mr. Langseth stated that performance standards would not be met if the system is left in its existing location and the non-conforming portions of the project previously required mitigation. Mr. Langseth suggested submittal of a detailed analysis for the system in order to support it functioning properly. The Commission discussed the need for an independent observer. The applicant commented on the design change due to conditions in the field. Mr. Wolk asked for a clarification on the runoff being infiltrated. Mr. Langseth stated there was additional capacity that was reflected in the original design. The applicant will come back in front of the Commission at a later date with a proposal for additional chambers.