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TABLE 3-9 <br /> SUMMARY OF SURFACE SOIL DATA (0-15 feet figs) <br /> CALTRANS SHOP 10 <br /> STOCKTON, CALIFORNIA <br /> Sample <br /> Boring No Sample Date Depth Benzene Toluene Ethylbenzene Xylenes <br /> (feet bgs) mg/kg trig/kg mg/kg mg/kg <br /> SS-22 10/20/93 5 �.GOI <. Ef. 26 #k,El2 <br /> SB-22 10/20/93 10 <br /> SB-22 10/20/93 15 <br /> MW-24 10/20/93 1 50 0 016 00012 00012 00088 <br /> MW-24 10/20/93 5 0 0009 ,fla 4. 00041 <br /> MW-24 10/20/93 10 00008 00016 00008 00052 <br /> MW-24 10/20/93 15 <br /> vW-1 09/07/96 10 <br /> vW-1 09/07/96 15 -,112400-- 510 280 980 <br /> number of samples 53 53 53 53 <br /> number of detects 11 15 10 14 <br /> Maximum 1250 61000 1 28000 98000 <br /> Minimum 000 000 000 000 <br /> Arlth Mean 0 32 977 537 1869 <br /> Std Dev 1 72 7004 3845 13459 <br /> to-1 0 05 168 168 168 168 <br /> 95°x6 UCL 071 2588 1422 4965 <br /> Residential PRG 062 520 230 210 <br /> Industrial PRG 140 520 230 210 <br /> Exceed Residential PRG? Yes No No No <br /> Exceed Industrial PRG? No No No No <br /> Detection limit< PRG? No Yes Yes Yes <br /> Potential COC? No No I No No <br /> Notes <br /> Numbers in hold and shade are 1/2 the detwbon limit <br /> mg/kg-milligrams per kilogram <br /> NA=Not analyzed <br /> ND=Not detected <br /> PRG=EPA Region IX Preliminary Remediation Goals 1998 <br /> COC=Chemical of concern <br /> Soil samples collected from borings VM-1,VM-2,MW-25,and MW-26 were tested for methyl tert-butyl ether(MTBE) <br /> MTBE concentrations were below the laboratory detection land of 0 0005 mg/kg In all soli samples tested <br /> Page 2 tab3-12/8/99 <br />