2013-10-22 CONCOM-min - Laserfiche WebLink

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TOWN OF LEXINGTON, MASSACHUSETTS CONSERVATION COMMISSION MINUTES Tuesday, October 22, 2013 7:30 P.M. Parker Room, Town Office Building 1625 Massachusetts Avenue Chair Joyce Miller opened the meeting at 7:30pm in the Parker Room of the Town Office Building. Commissioners Present: Joyce Miller, Phil Hamilton, Stew Kennedy, Duke Bitsko (arrived at 7:33pm), Dick Wolk (arrived at 7:38pm), and Jane Warren Commissioners Absent: David Langseth Others Present: Karen Mullins, Conservation Administrator and Michelle Tassi, Community Development Department Assistant 7:31 pm Hearing – NOI, 990 Waltham Street DEP# 201-912, BL 872 Excavation of lead-based paint impacted soil within the 100-foot Buffer Zone to Bordering Vegetated Wetland Documentation: NOI Application 10/2/13 Present for the Applicant: Bill Dailey, Sloane and Walsh, James Freehling, Symmes Lifecare, Inc. and James Borrebach, OHI Engineering Mr. Dailey gave a brief history of the property before it was acquired by Brookhaven and the current proposal to remove the low level of lead soil. Mr. Borrebach explained that there will be excavation and off-site disposal of contaminated soil with low level lead concentrations. The Notice of Intent identifies up to 5,000 square feet of temporary Bordering Vegetated Wetland alteration to accommodate the lead removal. A fluorescent meter will be used on site to determine lead levels and minimize disturbance of the wetlands. Mr. Borrebach commented that lead impacted soils from lead paint are not subject to clean up standards. There will be removal and stockpiling of 750 cubic yards of soil, installation of a Filtermitt silt sock, and the trees will be worked around to limit the removal. Comments from the Commission as follows: Ms. Miller read Mr. Langseth’s comments regarding this proposal. Mr. Hamilton asked the parameters for stockpiling. Mr. Borrebach replied that the soil will be stored for 30-90 days on and covered by polyethylene sheeting. Mr. Kennedy commented on the preferred location for stockpiling to be close to the house demolition area. The applicant agrees and is willing to implement additional erosion control measures to preserve existing trees. Mr. Bitsko questioned the maximum depth of soil removal. Mr. Borrebach replied that the depth would be no more than three feet based on clean up of an average lead concentration. Mr. Hamilton suggested conditioning security to watch for vandalism of the soil stockpiling.