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1 TOWN OF LEXINGTON, MASSACHUSETTS CONSERVATION COMMISSION MINUTES February 11, 2019 6:30pm Parker Room Town Office Building, 1625 Mass. Ave, Lexington, MA Commissioners Present: Phil Hamilton, Alex Dohan, David Langseth, Duke Bitsko, Kevin Beuttell, Ruth Ladd and Dick Wolk Others present: Karen Mullins, Conservation Administrator and Katie Luczai, Conservation Department Assistant 6:30pm Request for Certificate of Compliance: 39 Sherburne Road DEP #201-920 BL 880 Mr. Fred Russell presented before the Commission. Mr. Russell, the project engineer, reported that several modifications were made during the construction process. These modifications included construction of overhangs, porches, landings, stairs, and walkways that were not shown on the approved plan resulting in an increased amount of impervious area square footage in the associated drainage analysis from the approved proposed plan. To date, the builders, on the recommendation of Mr. Russell, the project engineer, adjusted the sump pump in the basement to a smaller pump and reduced the depth of pumping to decrease the amount of groundwater pumping to subsurface infiltration system designed for the roof area. Mr. Russell stated that the modifications were made without consulting the Conservation Commission because the owners only live in Lexington part time. Mr. Russell emphasized the problems they had in communication among their construction team and the homeowner. The Commission noted that the homeowners had onsite agents who could have requested the changes to the Order of Conditions and reiterated the need for the applicant to come before the Commission to ask for permission before making modifications that were not on the approved plan. Mr. Wolk confirmed the builders have had past experience with the Conservation Commission process, echoing these builders should have known better. Chairman Hamilton suggested that the request for a certificate of compliance be continued to the next meeting, pending review by the engineering department of the updated drainage calculations for the as-built conditions prepared by Mr. Russell. The Commission agreed. 6:46pm