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Table 9 C-Sparge System Pilot Test Groundwater Chemical Analytical Data Former Unocal Service Station#0187 437 East Miner Avenue, Stockton Sample DO TPHg Benzene Toluene Ethylbenzene Xylenes MTBE Well ID Date (ppm) (ppb) (ppb) (ppb) (ppb) (ppb) (Ppb)- NP-1-111 04124/01 5.50 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 (Cont.) 05/08/01 4.97 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 5114-16/01i'f -_- <50.0 <0.500 0.654 <0.500 1.22 <5.00/<2.00131 05122/01 2.22 <50.0 <0.500 <0.500 <0.500 .948 <2.50 06105101 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 06/19101 3.82 <50 <0.50 <0.50 <0.50 <0.50 <2.5 07/03/01 4.00 <50 <0.50 <0.50 <0.50 <0.50 <2.5 07117/01 3.56 <500 <5.0 <5.0 <5.0 <5.0 47 07/31/01 --- <50 <0.50 <0.50 <0.50 <0.50 <2.5 08113-15/01 i'i ---- <50 <0.50 1.1 <0.50 1.6 <501<2.0133 11126-2810VI ---- <50 <0.50 1.5 0.53 2.7 <5.0/<1.0131 02125-27/021'1 ---- <50 0.73 1.4 0.67 2.7 <5.01<1.0'3i 05107-09102111 ---- <50 <0.50 <0.50 <0.50 <0.50 <5.01<1.0'31 05/2 1/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 06/19102 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 07/19/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 08112-14/021" ---- <50 <0.50 <0.50 <0.50 0.73 <2.51<1.0131 08/22/02 ---- 5361 20 0.92 <0.50 0.69 <2.5 09120/02 --- <50 <0.50 <0.50 <0.50 1.0 <2.5 10/21/02 ---- <50 <0.50 <0.50 <0.50 1.0 <2.5 11105-06102[il ---- <50 <0M <0.50 <0.50 <0.50 <2.5/<2.0131 11/21102 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 12/18102 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 01123103 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 02104-06103l'1 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.01<2.0[3] 03/21/03 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 04/22/03 ---- <50 <0.50 <0.50 <0.50 1.1 <2.0 05/20/03 --- 110 24 1.5 0.74 17 <2.0 5/27-301031" ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0/<0.50,3, 06/20/03 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 06940 a ENSROration r �r r r r Ir r r r Ir r rr r r r �r r r ■r