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14 February 2012 ' AGE-NC Project No. 99-0624 Page 2 of 3 PROCEDURES Well destruction activities were performed between 17 and 20 January 2012 by All Well Abandonment of Sacramento, California. Ground water monitoring and remediation wells EW-1, VW-3, MW-4, MW-5, MW-6 and MW-8 were destroyed by pressure grouting the well columns with Portland Type II cement (six gallons water for every 94-pound sack of portland cement ). Each pressure grouted well was filled to the top of the casing and then pressurized at 25 pounds per square inch, for 10 minutes, to allow grout to enter the screened interval. Following pressurization, the upper three feet of each well was destroyed by either over-drilling using hollow sten, augers or hand digging and manually removing the exposed casing. Each well box was then removed and the surface was finished with a rapid setting concrete mixture. Ground water monitoring and remediation wells MW-1, MW-2, MW-3, VW-1, VW-2 and VW-4 were removed by over-drilling the wells to total depths of 50 feet bsg (VW-2), 55 feet bsg (VW-1, VW-3) and 65 feet bsg (MW-1 through MW-3) with 8-inch diameter hollow stem augers; well MW-7 was over-drilled to a total depth of 91 feet bsg with 8-inch hollow stem augers. Ground water extraction remediation well EW-2 was overdrilled to a total depth of 65 feet below surface grade with 12 inch hollow stem augers; during the destruction of EW-2, the well casing was removed from the borehole in its entirety. Following overdrilling each well was grouted to near surface using a portland cement grout mixture, well boxes were removed and the surfaces at each location were completed with a rapid setting concrete mixture. Prior to the above well destructions, the underground PVC piping system connecting the remediation system to the wells was cut and capped at the surface in the former compound. Additionally, during well destruction grouting activities, :portland cement was allowed to flow back through the remedial piping at,each remediation well location, sealing the horizontal conduit. On 06 February 2012, a ten yard soil bin containing approximately 7.36 tons of non- hazardous waste that was generated during over-drilling activities was transported by Republic Services of Stockton, California. Waste generated was hauled and disposed under non-hazardous waste manifest to Forward Landfill of Manteca, California. Non- hazardous waste manifests documenting the waste disposals are included in Appendix B. Laboratory analytical data utilized for waste disposal is included as Appendix C. Advanced GeoEnviron mental,Inc.