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f Table 1-2 SUMMARY OF ANALYTICAL RESULTS FOR SOIL Former Mobil Bulk Plant 04-343 Tracy, California Ethyl- Total Boring Sample Depth TPH-G TPH-D Benzene Toluene benzene Xylenes Number Date (feet) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) ' AW-1 09/26/90 9.4 -- -- -- "" "" AW-2 09/26/90 6.5 ND<0.5 ND<10 ND<0.005 ND<0.005 ND<0.005 ND<Q.005 ' AW-3 09/26/90 -- ,' AW-4 09/26/90 6.5 ND<0.5 ND<10 ND<0.005 ND<0.005 ND<0.005 ND<0.005 09/26/90 10.0 ND<0.5 ND<10 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ' AW-5 04/30/91 6.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<0.005 ND<0.005 (B-4) 04/30/91 11.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ' AW-6 04/30/91 6.5 ND<1.0 180 ND<0.005 ND<0.005 ND<0.005 0.038 (B-2) 04/30/91 11.5 ND<1.0 5.4 ND<0.005 ND<0.005 ND<0.005 ND<0.005 AW-7 (B-3) 04/30/91 6.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<0.005 ND<0.005 AW-8 05/01/91 5.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<0.005 ND<0.005 (B-9) 05/01/91 10.5 ND<1.0 ND<1.0 ND<0.005 ND<0.005 ND<0.005 ND<0.005 AW-9 04/03/92 10 ND<1.0 1.8 ND<0.005 ND<0.005 ND<0.005 ND<0.005 {' (B-10) 04/03/92 12 480 510 4.4 0-37 9.5 3.2 04/03/92 22.5 ' AW-10 03/25/93 10 103 550 0.38 0.081 1.3 0.61 03/25/93 11 507 3,700 3.2 0.43 11 2.0 03/25/93 12.5 -- -- -- -- -- ' AW-11 03/25/93 10 250 600 1.4 2.4 1.9 3.2 03/25/93 12 ND<1.0 17 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ' 03/25/93 14 -- 03/25/93 15 -- -- ' 03/25/93 20 -- -- -- -- -- 30 al 30 06193 Page l of 2 ,10 : T 3 ,