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20 October 2011 AGE-NC Project No. 98-0504 Page 2 of 3 All wells, pressure grouted or overdrilled, will be destroyed in accordance with the SJCEHD Standards For Well Construction and Destruction. PROCEDURES As required, a health and safety plan will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities(National Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1985). Prior to drilling activities, each proposed drilling location will be clearly marked and an utility clearance obtained through Underground Service Alert. Prior to destruction activities, wells will be checked for total depth and integrity using a Solinst water level meter. Any obstructions found in the well will be removed. Well MW-1 will be drilled-out to one foot deeper ton the total depth of the well utilizing 8-inch diameter hollow-stem augers.All original well construction materials will be removed (including well casing, screen, filter pack, and annular seal) to ensure that no residual contamination is sealed within the abandoned borehole. The remaining borehole will be backfilled to surface grade with neat cement and covered with concrete or asphalt, ' depending on the surrounding surface material. Well boxes and caps will be removed to expose the well casings of wells MW-2 and MW-3. The well head will be fitted with a pressure tight adapter connected to a hose extending from a grout mixer. A thick grout mixture will be pumped into the well casing under approximately 5-15 pounds per square inch (psi) of pressure. The well will then be over-drilled to approximately 3 feet below surface grade (bsg)using 8-inch diameter hollow- stem ollow-stem augers. The top 2.5 feet of the well casing will then be cut and removed and grout will be used to fill the boring to approximately 0.5 feet above the top of the well casing. The remaining borehole will be backfilled to surface grade with neat cement and covered with concrete or asphalt, depending on the surrounding surface material. Soil cuttings generated during drilling activities and rinseate will be containerized in properly labeled Department of Transportation (D.O.T.)-approved 55-gallon drums or a landfill disposal container, and stored on-site f r proper disposal. Upon completion of field work and disposal o soil-cuttings, a well destruction report describing well destruction activities and prose ,ures, including documentation of waste Advanced CeoEnvironmental,Inc.