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- <br /> ��• "r�H� r`p� .C� ,�-•I¢" tY> a ��t'�i�C�," ?i �w P;� CI "lr� ..jFk��'Ija d:Wya}ir� ..,aiq i4. � wd', � F. s <br /> _ �y � '�-+1' .� r r ,qr_ i';• ��x e a. ��- !; � S§.,{r 't"• Jf: m.yms �%s „*it'. .�,. <br /> I — , <br /> sn <br /> PRET NK REMOV 1L S I ASSESS?dzr,T <br /> f r. e30 west Chau-r Way,Stockton,CA <br /> Delta Project No.40-88-586 <br /> I Page 3 <br /> l24 SiteIStory ' <br /> P:u <br /> The existing retail gasoline outlet was constructed in 1911. Figure 2 illustrates existing buildings and <br /> f , facilities at the site. Three underground gasoline storage tanks and a waste oil storage tank were <br /> installed at this time. The original waste oil tlnk was removed in 1987 and replaced with a dual- <br /> walled waste oil tank. Vapor recovery lines were installed in 1975, and new product-distribution <br /> I ' lines were installed in 1978. Pertinent storage tank data are contained in Table 1. <br /> GA <br /> � s <br /> to <br /> TABLE I <br /> Tank Information <br /> Capacity Product A <br /> j Il n �SQred y gr <br /> t 10,000 ` _- Status <br /> Super unleaded 17 Steel In use; tested <br /> 10tight 6/88 <br /> ,004 <br /> ,,. Leaded regular I7Steel In use; tested <br /> tight 6/88 <br /> 8,000 Regular unleaded 17 Steel <br /> In use; tested <br /> 550 Waste oil tight 5/88 <br /> 16 Steel Removed 6/87 <br /> V,, 550 Waste oil <br /> I Fiberglass In use <br /> A single soil sample taken from beneath the steel waste oil tank when it was removed in June of <br /> t. 1.1 1987 was analyzed for TPH,BTEX,and polychlorinated biphenyls(PCB)by EPA Method 8080,and <br /> halogenated volatile organics by EPA Method 8010. All of the test results were negative. <br /> 2.3 Spill/Leak Histoey <br /> Las No spills or leaks have been reported at this site, Precision tank tests have been performed regularly <br /> over the years, and no leaks have been detected. <br /> 2.4 Well [nvgntory <br /> An inventory of existing water supply wells within a one-half-mile radius of the site has been <br /> d. conducted and the results will be presented in a subsequent site assessment report. <br />