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Advanced <br /> GeoEnvironmental , Inc . <br /> 21 November 2012 <br /> AGE=NC Project No. 98-0511 RECEIVE <br /> Mr. Harlin Knoll <br /> San Joaquin County Environmental Health Department DEC 0 4 2012 <br /> 1868`East Hazelton Avenue <br /> Stockton, California 95205 ENVIRONMENTAL HEALTH <br /> PERMITISERVICES <br /> Subject: Well Destruction Report <br /> LANGSTON'S MARKET j <br /> 15615 South 7th Street, Lathrop, California <br /> Dear Mr. Knoll: <br /> At the request of the estate of James Langston (former Langston's Market), Advanced <br /> GeoEnvironmental, Inc. (AGE) has prepared this report for the destruction of ten wells at <br /> 15615 South 7th Street, Lathrop, California. The site location is depicted in Figure 1; site <br /> structures and former well locations are depicted in Figure 2. <br /> INTRODUCTION/BACKGROUND <br /> Ten(10)single-completed shallow groundwater monitoring wells(MW-1 through MW-8 and j <br /> DPE-1 and DPE-2) had been installed on-site and off-site as part of a subsurface ! <br /> investigation of the former underground storage tank(UST)area at 15615 South 7th Street, <br /> Lathrop, California. The total depths and screen intervals of the wells are summarized in <br /> Table 1. <br /> The monitoring wells were destroyed as outlined in the AGE-prepared, Well Destruction <br /> Work Plan, dated 10 July 2012. All wells were destroyed under San Joaquin County <br /> Environmental Health Department(EHD)boring permits; and off-site wells were destroyed <br /> under city of Lathrop encroachment permit (Appendix A). <br /> PROCEDURES <br /> Well destruction activities were performed between 16 and 18 October 2012 by All Well <br /> Abandonment of Sacramento, California. Prior to commencement of well destruction <br /> activities each well casing was sounded with a Solinst water level meter to ensure that no <br /> obstructions were present in the casings. Wells MW-1 through MW-8 and DPE-1 and <br /> DPE-2 were drilled-out to one foot deeper than total depth using a CME-75 Limited Access <br /> Drill Rig(LAR)equipped with 8.25-inch diameter hollow stem augers to drill-out wells MW-3 j <br /> I <br /> 837 Shaw Road • Stockton. CA 95215 <br /> Telephone(209)467-1006 • Fax (209)467-1 1 18 <br /> i <br />