SITE INFORMATION AND CORRESPONDENCE

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` S 1649 East Channel Street' ( f 1 Stockton CA 95205 Chronology Tank History Tank ID Contents Installed Parte 1045-1 Diesel 8,000 gal , 10/ /88 1045-2 Diesel 10,000 gal! 10/7/88 1045-3 Gasoline 1,000 gal J 7/12/90 I 1988 10/7/88 Two underground storage tanks were rem o ved, an 8,000 gal and a 10,000 gal. Soil contamination was evidenced (see Table 1). i c S 1989 1/27/89 Approximately 350 cubic yards was excavated and soil samples were a collected to confirm that the soil contamination was removed (see Table 2). The excavated soil was transported under manifest to BF Waste Systems, I. Vasco Road Landfill in Livermore. 1990 7/12/90 One underground storage tank was removed, a 1 ,000 gal. Soil i contamination was evidenced (see Table 3). 1992 10/9/92 One soil boring was drilled through the former tank pit, 81 , evidencing soil contamination to 50 feet below ground surface (see Table 4). 1993 3/9/93 Three monitoring wells were drilled and installed (see Table 5). Quarteriy sampling was initiated (see Table 6 and Table 7). i 8/30/93 Soil excavation of contamination was initiated. Soil was excavated to 30 feet and approximately 1,000 cubic yards was removed (see Table 8). 9/21/93 Soil excavation was continued to approximately 39 feet and approximately 200 cubic yards was removed (see Table 8). The contaminated soil was transported to B&J Landfill in Vacaville CA. . � l 1994 F 8/9/94 The site was presented to the TRC for closure. Closure was not ` I` recommended until some deficiencies in the reporting was corrected. 1995 i ! 2/7/94 Reviewed the Revised Closure Summary Report. Prepared chronology recommending site closure. PHS/EHD has evalaluated the site for closure r, } and has found that all necessary remedial action have been implement and no further action is required. i f 11 5