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Page 1 <br /> Board of Selectmen <br /> Minutes-revised <br /> August 19, 1997 <br /> Present. Selectman Frye, Selectman Marsters, Selectman Caffyn, Selectman Dinizio <br /> Executive Secretary Robert Whritenour <br /> Assistant to the Executive Secretary Joyce Mason <br /> Absent: Selectman Costa <br /> Meeting Called,to by Chairman Costa at 6:30 p.m. <br /> Town Hall, Meeting Room#1. <br /> The Board of Selectmen held a public meeting for the purpose of <br /> discussing the J. Braden Thompson Plume and MMR Plume Response <br /> Program. William Fisher of Woodard&Curran and representatives <br /> from the Department of Environmental Protection (DEP) and <br /> Massachusetts Military Reservation(MMR) were present to discuss <br /> their findings. Approximately thirty interested citizens attended the <br /> hearing. <br /> J. n Th mpson Plume• <br /> .,.. • <br /> The J. Braden Thompson Plume emanating from an inactive junkyard <br /> located in the Town of Sandwich is presently migrating in a southeast <br /> direction towards MashpeelWakeby Pond informed Gerard Martin, a <br /> State Department of Environmental Protection official. <br /> Remedial assessment and investigation has indicated that the plume <br /> is presently approximately 5,550 feet long, 350 feet wide, and 150 feet <br /> thick. The levels of pollution consist of disposed drums, storage <br /> tanks,and scrap metals from a former garage and junkyard informed <br /> . Martin. <br /> Monitoring wells have been installed to delineate the vertical and horizontal <br /> extent of the plume to finalize the design for the proposed groundwater <br /> treatment system. <br /> It was noted that seven residential homes in the area presently use private <br /> wells. The remainder are hooked up to town water. The wells continue to <br /> meet drinking level standards indicated Mr.Martin who noted that wells <br /> are sampled on a quarterly basis. <br /> The maximum contaminant level standard for safe drinking water is <br /> .05 parts per billion. (ppb) <br /> Monitoring wells placed near Mashpee/Wakeby Pond in the area of <br /> Pickerel Cove contain 3400 ppb of tetrachloroethane. A few hundred <br /> feet upgradient near Cove Road,2000 ppb of the chemical was detected. <br /> The plume is much deeper and higher in concentration than what was <br /> previously thought informed Mr. Martin. It was noted that all monitoring <br /> wells detected MTBE, a gasoline additive that may be attributed to <br /> boating use. <br />