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r Illlr r Ir r r Ir r r Ir r Ir Ir r Ir Ir r r r Table 9 C-Sparge System Pilot Test Groundwater Chemical Analytical Data Farmer 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-1-65 08/16/04 -- 4,500 56 58 450 140 <10.0[31 (Cont.) 09/23/04 -- 1,500 <5.0 8.9 260 26 - 10/22/04 -- 680 19 5.3 190 9.8 -- 11/16/04 -- 2,100 14 55 100 130 <0.50 12/29/04 -- 1,100 22 26 130 37 -- NP-1-111 11120-22/001" 21 0[21 11.8 2.55 0.612 1.83 <5.00/<2.00131 12/07/00'' ---- 260121 12.9 0.666 0.585 <0.500 ---- Baseline 1218100 3.35 170 4.8 <0.50 <0.50 0.86 4.1 12/19/00 5.27 180 3.4 0.69 <0.50 2.1 3.3 12/26/00 3.86 80.0 2.50 <0.500 <0.500 <0.500 <2.50 01/02/01 ---- 116 3.55 <0.500 <0.500 <0.500 <2.50 01/09/01 7.08 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 01/16/01 4.14 <50.0 <0.500 <0.500 <0.500 <0.500 <5.00 01/23/01 4.24 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 01/30/01 2.76 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 02/06/01 3.44 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 02/13/01 4.30 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 02/21/01 4.04 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 2126-27/01111 ---- <50.0 <0.500 <0.500 <0.500 <0.500 <2.50/<2.0[31 03/06/01 4.82 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 03/13/01 3.29 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 03/27/01 3.76 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 04/10/01 4.32 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 04/24/01 5.50 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 05/08/01 4.97 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 5114-16/011'] ---- <50.0 <0.500 0.654 <0.500 1.22 <5.00/<2.00131 05/22/01 2.22 <50.0 <0.500 <0.500 <0.500 .948 <2.50 06/05/01 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 08/19/01 3.82 <50 <0.50 <0.50 <0.50 <0.50 <2.5 06940-325 5 ENSR Corporation