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S Tam Summary of Soil Sample Analyses Former Mobil Oil Bulk Plant 04.343 500 East Grantline Road Tracy, California Sample Date of Depth TPH-0 TPH-D Benzene Toluene Ethyl- Total Organic Total Dry Density Specific percent Lab No. Sampling (feet) (ppm) (ppm) (ppm) (Ppm) benzene Xylenes Lead (pound3l Gravity Moisture (ppm) (ppm) (Ppm) (Ppm) Carbon feats N AW-1 9/213190 9.0 - . . -- - - - - -- - - - --- AW-2 9x211190 6.5 ND4.5 ND<10 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.08 - - - - W AW-3 9x28190 - - - - - - - - - - - AW-4 90f190 6.5 ND<0.5 ND<10 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.08 - - - - Al 9/213/90 10.0 ND<0.5 ND<1D ND<0.005 ND<0.005 ND<0.D05 ND<0.005 ND<0.08 - - - - Al AW3(B-4) 4130191 6.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<0.005 ND<0.005 -- - - - - CAS, 4131A191 11.5 ND-0.0 ND<1.0 ND<0.005 ND<0.005 ND<O.0D5 ND<0.005 - --- - - - CAL i AW3(B-2) 40Y91 6.5 ND<1.0 180 ND-c0.005 ND<0.005 ND<0.005 0.038 - - - - - CAL 4/3"1 11.5 ND<1.0 5.4 ND<0.005 ND<0.005 ND<0.005 ND<0.005 - - ..- - - CAL I AW-7(B3) 41'30191 6.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<O.OD5 ND<0.005 -- - - -- - CAL AW-8(8-9) 5/1191 5.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<0.005 ND<0.005 - - - - - CAL 511191 10.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<O.D05 ND<0.D05 - - - - - CAL AW3(B-10) 4/8192 10.0 ND<1.0 1.8 ND<0.005 ND<0,005 ND<0.005 ND<0.005 - 420 - - - SEQ 413192 12.0 480 510 4.4 0.37 9.5 3.2 - - -.- - --. SECI 418192 22.5 - - - - - - - 180 - -- - SEQ AW-10 3)2FA3 10.0 103 550 0.38 0.081 1.3 0.61 - - - - SEQ 312 m 11.0 507 3,700 32 0.43 11 2.0 - - - - - SEQ 3125193 12.5 - - - --» - - - 670 105.1 1.93 21A SEQ NOTES: ppm - parts per million(mg(kg) TPH-0 - total petroleum hydrocarbons as geadine TPH-D - lotai petroleum hydrocarbons as diesel h - - not analyzed/not applicable ND - not detected at detection limits stated in official laboratory reports Al - Anametrix,Inc. CAL . Chromalab,Inc. SEQ . Sequoia Analytical Page 1 of 2 30-0136181aL TABLE 6(15W