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• 25 October 2011 AGE-NC Project No. 01-0839 Page 2 of 2 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-3 and MW-4 were drilled-out to their total depth using a CME-75 hollow stem auger drill rig equipped with 8.25-inch diameter hollow stem augers. 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.The remaining borehole was then backfilled to surface grade with a grout mixture and completed at the surface with concrete (A ratio of six gallons water for every 94-pound sack of portland cement was utilized in preparation of the grout mixture). The remaining wells were fitted with a pressure tight adapter connected to a hose extending from the grout mixer. The grout mixture was pumped into each well casing for five minutes under approximately 15-25 pounds per square inch (psi)of pressure.The well boxes were then removed and the wells were over-drilled to three feet bsg using a CME-75 hollow stem auger drill rig equipped with 8.25-inch diameter hollow stem augers. The top three feet of the well casings were then removed and the borings were grouted to the near surface using the portland cement grout mixture and completed at the surface with concrete. The well construction materials and soil cuttings were hauled off-site for disposal at Forward Landfill in Manteca, CA. A copy of the non-hazardous waste manifest is included in Appendix B. If you have any questions or require further information, please contact our office at(209) 467-1006. Sincerely, Advanced GeoEnvironmental, Inc. � r R��tr7473 4 Brian W. Millman William R. Little Senior Project Geologist Senior Project Geologi OF CnuF4 California Professional Geologist No.8574 California Professional Geo o. 7473 cc: Mr. Ernest P. Giannecchini, Ernie's General Store Ms. Lori Duncan, EHD Advanced GeoEnvironmental,Inc.