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�r <br /> P � <br /> _ ca April 5, 1991 <br /> r .,. Site Assessment Report Page 3 <br /> p 139 South Center,Stockton,CA <br /> IJA <br /> TABLE 1 -UNOLRGRCUND STORAGE TANK HISTORY <br /> T r� TANK&ZE PA DUCT CONSTRUCTION <br /> DATE (In gallons) STORED <br /> 1,000 waste oil steel <br /> 14D69-s0 leaded gasoline' steal <br /> 5,000steel <br /> 10,000 unleaded gasoEn'' <br /> 10,000 unloaded gasoline' steel <br /> 1990- 1,000 waste oil double-wail iibar;ll <br /> MOM unleaded gasoline double=:kill fiberglass <br /> +a <br /> 10,000 Waded <br /> gasoline moble-wall fiberglass <br /> 10,000 leaded gasoline dou Ile-wall fiberglass <br /> At <br /> 'At time of tank removal.April 1990 <br /> Source: Ran San,-1102,$Uitlon owner(1991) <br /> to a depth of <br /> Wow 50 ppm. Excavation In the area to the south of the pump!;land s Only proceed <br /> ! , B.teet below grade due to tha presence of building rubble In the subsurface. Laboratori analyses of soul <br /> samples taken from this exca+ation reported concentrations of ad <br /> so gasoline hydrocarbons In <br /> r�r <br /> excess of 100 ppm at approximately&feet below grade. <br /> The site has been reconditioned and is in ape <br /> ration as 3 Chevron Service Station. Sec Figure 2 <br /> i t (Sato Plan)for the location of the former underground storage tanks and the existing u xierground <br /> i r storage tanks. l <br /> .IA SITE SEWING <br /> i <br /> The termer Chevron Service Station No.9-0557 is located on the northwest corner of the <br /> California The land <br /> Intersection of Soui.'i Center Street and Washington Street,in Stockton, bie that has been <br /> surrounding the site has been enJrely developed;a po►tian of the site as bulli upo:t 3vb <br /> Slough lige approximately ono- <br /> t.a y B feet of fine-gralned backfill. Mormon <br /> cpvarnd over with aiaproxlmat9low <br /> S, <br /> quarter-mile south and scrAwest of Station No 657,aril the deepwater Fort of Stocfcton Iles <br /> i=s apmoximately one-mile wast(See Figure 1.Location Map). <br /> GROUIDWATER <br /> .. <br /> :TFI.N�''LAGY.[Nr. <br /> . ..,. i - <br /> f31 <br /> r�n�n►nomr�ynucwrm <br />