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r p OGLE M ASSESSMENT REPORT <br /> i Shell ServiGc Station <br /> 7910 Lower Sacramentu Roar,Stockton,California <br /> . , Shell WIC No.204-7524.0808 <br /> Delta Project No.49.88-147 <br /> Page 6 <br /> illustrated in Figure Z. The samples were submitted for chemical a.-Wysis of iBTEX,TPH,EDB,and TEL <br /> Laboratory awilytical molts are preser,ed in Tahl,�3. Concent;;tions of TPH were below the analytical <br /> 1 ` method dcte;.t.'on Iimit of 10 pp,-.,. <br /> {.'i <br /> TABLE 3 <br /> { ' # Chemical Analysis of soil Samples From <br /> the Product L'lnr•.Trench: <br /> -. CoaeentmEions in milligrams Pr,;'kilogram(mglkg) <br /> ! ± 8ampis Date Apprcr-4.mate <br /> x' <br /> C ,—IMW• � feet Ite�ne bgnze�na olvene ?(X ly�rnes � l3 : r'1�.,L <br /> T-1 ohU7/894 <br /> T-2 OW)89 4 [0.001 0.0611 0.045 0.174- 15.01 <0.001 [0.05 <br /> s.25 0.030 <n 24.Oa [0001 :0.05 4` <br /> PG4 p 4. [ISG [0.001 24 31.4"" - 15100° [0.001 <br /> . '^ PLS. Oi25189 4 <0.001 [O.Ooi <br /> 04 0.+W X10.0 <br /> <0.001 <0.001 i.� <br /> [0.001 [OQ5O2S89 4 [0.00100001 <O.00E <0.001 <005PL-7 0/5!89 <br /> 9.012 O.M , <10.D [0.001 <0,95 <br /> <L.00I: 40001 <0.001 <O.00I; [10.0 X0.001 [0.05 <br /> 0124/89 4 [19.001 <00DI [0.001 [0.001 <br /> +B <br /> PL-9 0125/89 4 [0001 <O.00I <0.001 <0.001 <10.0 c0.001 <005 <br /> [10.0 [0001 <005 <br /> aIdentified as gasoline <br /> _GCYI{U 'nrld EI dm 041 r '- <br /> x The site ! within the Great Valley geomorphic province. The geologic materials ber_eath the <br /> region <br /> eoasrst prrliiarily of stream and Delta plain deposits of the San Joaquin River and its <br /> 6"" Ertbut9ties(Norris and <br /> �w Webb,1976) Surficial geology of the area,as depicted an the GeoIngic Map of California(Jettttirtps,et a!, . <br /> Y .. i <br /> r 1977),consists of fluvial sands,silts,and clays,and is considered to be several hundred fort:nick <br /> f~ A.regional map showing the ground wattr elevation contours for the unconfined aquifer for Fail 1986, <br /> prepared by-the D <br /> WR,shows.t6at.ground'water east of t.te Saa Joatluiri River generally slows toward the <br /> --- - — <br /> ' southwerse ;However,a regional map showing the ground <br /> w3"er ele%mtioa contours for the unconfined aquifer <br /> r for Spritrg 1989,pe*pared by the San Joaquin County Flood Control and Conservation District,shows the <br /> b <br /> ground water Ltl the northern Bart of Stockton flows toward a water table_depression iodated east of the site, <br /> t <br /> t <br />