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RITE REMEDIATION WORK PLAN <br /> 15 East Grant Line Road <br /> San Joaquin County <br /> Tracy, California <br /> 1. INTR©DUCTION <br /> 1. 1 Purpose <br /> Thisa !��to rftiwft4�#i,9ni gitm p dip,* pl*n hAs lbte+emR ER'3'1eipx_#"e=d ww- *eth ic?!s�imwyr <br /> GAmpAny, by Donald W. Names of Pacific Rim Environmental, exclusive agents for <br /> BID--REM, INC. , in compliance with the regulations of the San Joaquin County <br /> Public Health Services, Environmental Health Division (PHS—EHD) , and the <br /> California Water Quality Control Board (CWQCB) . the purpose is to allow PHS— <br /> EHD to review the proposed remedsation to lessen, alleviate, abate, correct or <br /> clean up the effects of hazardous materials released into the soil and <br /> groundwater. The release was a result of the prior existence of an underground <br /> storage tank facility (site), identified as Cheaper' #37. <br /> 1. 2 Background <br /> Two underground storage tanks (USTs) were removed from the property on <br /> March 3, 1988. A Site Investigation Report prepared by Parker Environmental <br /> Services (Appendix A:Summary) was submitted to San Joaquin Local Public Health <br /> Services, Environmental Health Division on April 20, 1993. In review of the <br /> investigation report, chemical analyses of soil samples below the fuel storage <br /> tanks showed contamination by volatile organics and a Site clean up was required. <br /> More specifically, Parker Environmental Services conducted an investigation <br /> to further assess the extent of petroleum product, migration in the soil and <br /> groundwater underlying the former UST location at the Cheaper' #37 facility. <br /> The analytical data that was collected may be divided into two distinct areas — <br /> soil and groundwater. <br /> a. Soil <br /> Regarding soil, seven (7) borings were conducted around the former <br /> UST location to assess the general extent of petroleum contamination <br /> within the soil. The soil samples were collected for analysis at <br />' depths of 6 and 7 feet. The analytical results obtained from those <br /> borings may be summarized as follows: B-1 Nan—detect ;, B-2 19 <br /> Benzene, 0. 062 Toluene, 0. 57 Ethylbenzene, 1. 5 Xylenes; B-3 Non— <br /> detect; B-4 (at 6 feet) 0. 36 Benzene, 0. 93 Toluene, 3. 6 <br /> Ethylbenzene, 17 Xylenes; B-4 (at 7 feet) 3. 3 Benzene, 5.7 Toluene, <br /> 7. 5 Ethylbenzene, 28 Xylenes; B-5 0. 25 Benzene, 1.5 Toluene, 1. 2 <br /> Ethylbenzene, 6.5 Xylenes; B-6 Non—detect (0.025 Benzene, 0. 19 <br /> Toluene, 0. 44 Ethylbenzene, 0. 19 Xylenes; B-7 Non--detect, 0. 013 <br /> Xylenes (refer to Table 1). <br /> 1 <br />