04/06/1998 SELECT BOARD Minutes - Laserfiche WebLink

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MASHPEE BOARD OF SELECTMEN MINUTES MONDAY,APRIL 6, 1998 TOWN HALL, CONFERENCE RM #1 Present: Selectman Caffyn, Selectman Frye, Selectman Marsters, Executive Secretary Robert Whritenour, Assistant to the Executive Secretary Joyce Mason Guests: Gerard Martin, Paul Tarazzi, Dept of Environmental Protection Meeting was called to order by Selectmen Frye at 6:34 p.m. APPOINTMENTS AND HEARINGS Dept. Of Environmental Protection re: J. Braden Thom son Plume. Mr. Whritenour introduced Paul Tarazzi, Regional Director of DEP Lakeville and Gerard Martin, engineer with DEP who will give an update on the J. Braden Thompson plume. Mr. Tarazzi explained the plume originates from an old junkyard. The owners cannot pay for the cleanup so the State, through the DEP has stepped in to take over the design and construction of the remediation system. This is the single largest cleanup, using State funds, in the history of the program. That is good news for Mashpee. There had been concerns that the plum migrated under the Pond, to the eastern side but they have not found that to be the case. The cleanup efforts will remain on the western side of the Pond. He introduced Gerard Martin, engineer for DEP and Chief of the site management section. Mr. Martin thanked Mashpee town officials who have all been very cooperative and helpful to DEP during this process. He presented handouts of the overheads he will be showing. Site Description: an old junkyard off of Snake Pond Road and Rte 130 in Sandwich. DEP Actions to date: private wells along Cove Road have been monitored. Most wells are clean, one has PCE level of I.I. The wells are not pulling the plume up into drinking water. Phase II is to determine the extent of the plume. Phase III is to determine the best alternative for cleanup. Originally, DEP installed monitoring wells 180 feet deep, which was as far as the drilling rig could go. With new drilling equipment, last summer they were able to go to the bottom of the aquifer. They found the plume to be deeper than originally thought(275 feet), of higher concentration and the major component of the plume was different. DEP then became concerned the plume may have migrated under the Pond and initiated an assessment of the Eastern side of Mashpee Wakeby Pond. 20-30 private wells were sampled along South Sandwich Rd and Lakewood area and all were found to be clean. They also conduced surface sampling in the Pond, in the Cove Rd area. At each location a surface and bottom sample was taken. They found low levels of solvents at the bottom of the Pond which means the plume is getting into the Pond. He presented a map of the sampling locations. They then expanded the surface sampling to Mashpee and Santuit Rivers. I5 samples were taken and no contamination was found. Micro wells were installed in Ryder Conservation property and Lowell Holly(TTOR property)_ They could only get down 220 feet and could not get the drill rigs to the outermost part of the