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09 February 2016 RECEIVED AGE Project No. 95-0106 FEB 17 2016 Page 2 of 3 ENVIRONMENTAL HEALTH DEPARTMENT MW-1, MW-2, and V-1 through V-5 were destroyed. Prior to commencement of well destruction activities each well casing was sounded with a Solinst water level meter to ensure that no obstructions were present in the casings. Wells MW-1, MW-2, MW-3, MW-4, MW-5, MW-6A/B, and MW-8 were drilled-out to total depth (MW-1, MW-2, MW-3, MW-4, and MW-8) or 1-2 feet below total depth (MW-5 and MW-6A/B) using a Landra L-10 limited access drill rig (LAR) equipped with 8.25-inch diameter hollow stem augers to destroy wells MW-1, MW-2, MW-3, MW-4, MW-5, and MW-8, and 12.25-inch diameter hollow stem augers to destroy dual-completed well MW-6A/B. Well boxes were removed during the over-drill process. All original well construction materials were removed (including well casing, screen, filter pack, and annular seal) to ensure that no residual contamination was sealed within the abandoned borehole. Following over-drilling, each well was grouted to near surface using a Portland cement grout mixture (A ratio of no more than six gallons water for every 94- pound sack of Portland cement was utilized in preparation of the grout mixture. The surfaces at each location were then completed with a rapid setting concrete mixture or native material. Well MW-7, located in the backyard of 42 West Beverly Place, was destroyed by grouting the well casings under pressure and excavating around the well to 2.5 feet below surface grade (bsg). The well cap was removed to expose the well casing and the well was initially filled over its entire depth with a Portland cement grout mixture (A ratio of no more than six gallons water for every 94-pound sack of Portland cement was utilized in preparation of the grout mixture). All water displaced during the initial placement of the grout was containerized in properly labeled, Department of Transportation (D.O.T.)-approved 55-gallon drums and stored on-site for proper disposal. The well was then fitted with a pressure tight adapter connected to a hose extending from the grout mixer. The Portland cement grout mixture was pumped into the well casing for five minutes under approximately 10-15 pounds per square inch (psi) of pressure. The well box was then removed and an area approximately 20-inches in diameter to a depth of 2.5 feet bsg was excavated around the well casing. The top 2.5 feet of the well casings was then removed and the boring was filled with the grout mixture to near surface, the surface was then completed with native material. Vapor wells V-1 through V-5 were destroyed by removing the well casings and then over-drilling the well borings to total depths of 5 feet bsg utilizing a 3.25-inch diameter hand auger. All original well construction materials were removed (including well casing, screen, filter pack, and annular seal) to ensure that no residual contamination was sealed within the abandoned borehole. Following over-drilling, each well was grouted to near surface using the Portland cement grout mixture and then completed at the surface with native material. Advanced GeoEnvironmental,Inc.