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Advanced - ;-:.::.. GeoEnvironmental , Inc . --o- 25 October 2011 AGE-NC Project No. 01-0839 Mr. James L. Barton California Regional Water Quality Control Board OCT Central Valley Region 3 Y 2011 11020 Sun Center Drive, Suite 200 ENVIRONM Rancho Cordova, CA 95670 PERMIT s�HE � WCES Subject: Well Destruction Report - Third Quarter 2011 ERNIE'S GENERAL STORE 4407 East Waterloo Road, Stockton, California Dear Mr. Barton: Atthe requestof Mr. Ernest P. Giannecchini,Advanced GeoEnvironmental, Inc. (AGE)has prepared this report for the destruction of eleven wells at 4407 East Waterloo Road, Stockton, California. The site location is depicted in Figure 1; site structures and former well locations are depicted in Figure 2. INTRODUCTION/BACKGROUND Five single completed, two-inch diameter, ground water monitoring wells (MW-1 through MW-5) and six single completed, two-inch diameter, soil vapor extraction wells (VW-1 through VW-6), had been installed on-and off-site as part of a subsurface investigation of the former underground storage tank (UST) area at 4407 East Waterloo Road, Stockton, California. The total depths and screen intervals of the wells are summarized in Table 1. PROCEDURES On 19 and 20 September 2011, a total of eleven (11)wells were destroyed on-and off-site under San Joaquin County Environmental Health Department (EHD) well destruction permits(Appendix A).Well destruction activities were performed by All Well Abandonment, Inc. Monitoring wells MW-3 and MW-4 were destroyed by over-drilling to their total depths and backfilling with neat cement. The remaining wells were destroyed by grouting the well casings under pressure and over-drilling each well to three feet below surface grade (bsg). 837 Shaw Road• Stockton, CA 95215 Telephone (209)467-1006 •Fax (209)467-1118