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r ; r Advanced GeoEnvironmental Inc . ........ s 26 March 2012 AGE-NC Project No. 08-1642 RECEIVED MAR 2 8 2012 Mr. Harlin Knoll San Joaquin County Environmental Health Department EWVIRONMENTALHEALT14 600 East Main Street PERMITISERVICES Stockton, California 95202 Subject: Well Destruction Report FIVE START MARINA - EAST 345 North Yosemite Street, Stockton, California Dear Mr. Knoll: At the request of Mr. Terry McDonald of Five Star Marina, Advanced GeoEnviron mental, Inc. (AGE) has prepared this report for the destruction of nine (9)ground water monitoring wells at 345 North Yosemite Street, Stockton, Calif rnia (site). The site location is depicted on Figure 1; site structures and former well locations are depicted on Figure 2. INTRODUCTION/BACKGROUND Ground water monitoring wells had previously been installed at the site as part of a leaking underground storage tank (UST) subsurface investigation. A total of nine (9) two-inch diameter ground water monitoring wells (MW-5 through MW-13) were installed to total depths of 20, 21 feet below surface grade (bsg MW-5 through MW-12) and 34 bsg (MW-13). Monitoring wells were destroyed as outlined in the AGE-prepared, Well Destruction Work Plan, dated 21 November 2011.All wells were dest oyed under EHD boring permits,which have been included in Appendix A. PROCEDURES Well destruction activities were performed on 01 and 02 March 2012 by All Well Abandonment of Sacramento, California. Ground water monitoring wells MW-5 through MW-7, MW-9, and MW-11 were destroyed by pressure grouting the well columns with Portland Type II cement (six gallons water for eve 94-pound sack of portland cement ). Each pressure grouted well was filled to the top of the casing and then pressurized at 837 Shaw Road • Stockton. CA 95215 Telephone (209) 467-1006 • Fax (209) 467-1 J J 8