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TABLE 3-2 <br /> SUMMARY OF SUBSURFACE SOIL DATA(s15 That bgs) <br /> CALTRANS SHOP 10 <br /> STOCKTON,CA <br /> Boring No Sam le Date Sample Depth Benzene Toluene YI <br /> Eth Ibenzene Xylenes <br /> Y <br /> MW-25 08/05/96 20 rf# 3 ", • , <br /> MW-25 08/05/96 40 , <br /> MW-25 08/05/96 65 # � <br /> MW-26 08/04/96 20 <br /> MW-26 08/04/96 40 <br /> MW-26 08/04/96 65 00025 00025 00025 0.0025 <br /> number of samples 186 986 186 186 <br /> number of detects 51 49 46 54 <br /> Maximum 1250 1,03000 32000 99000 <br /> Minimum 00003 00003 00003 00003 <br /> Anth Mean 044 1307 4 79 1573 <br /> Std Dev 177 10107 3556 11386 <br /> to71 LO 05 166 166 1 66 166 <br /> 95% UCL 066 2537 912 2959 <br /> Residential PRG 062 52000 23000 21000 <br /> Industrial PRG 140 52000 23000 21000 <br /> Exceed Residential PRG? No No No No <br /> Exceed Industrial PRG? No No No No <br /> Detection limit< PRG? No Yes Yes Yes <br /> Potential COC? No No No No <br /> Notes <br /> Numbers In bold and shade are 112 the detection limit <br /> mg/kg = milligrams per kilogram <br /> NA= Not analyzed <br /> PRG= EPA Region IX Preliminary Remediation Goal, 1998 <br /> COC=Chemical of Concern <br /> bgs = below ground surface <br /> Sod samples collected from sal 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 limit of 0 0005 mglkg in all soil samples tested <br /> I <br /> S tab3-22/9/99 <br />