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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 TPH9 Benzene Toluene Ethylbenzene Xylenes MTBE Well ID Date (PP") (ppb) (ppb) (ppb) ( b) (ppb) (p b) NP-2-22 05/22/01 2.00 294 11.0 0.551 1.75 4.47 5.74 (Cont.) 06/05/01 ---- 180 7.1 1.4 1.2 1.4 3.1 06/19/01 2.40 64 1.3 <0.50 <0.50 <0.50 <2.5 07/03/01 2.39 100 5.2 <1.0 <1.0 <1.0 <5.0 07/17/01 4.24 130 2.1 0.57 <0.50 1.4 4.3 07/31/01 ---- 180 1.1 <0.50 0.60 0.53 <2.5 08113-15/011'1 ---- 1001�1 1.8 2.4 0.78 1.2 <5.0/<2,0131 11126-28/0111 ---- 130151 <0.50 2.5 <0.50 1.8 <5.0/1.6131 02/25-27102111 --- 220151 <0.50 0.61 <0.50 <0.50 <5.012.0131 05/07-09/02f1 ---- 340141 6.8 2.6 1.4 1.8 5.8/1.9131 05/21/02 ---- 200161 4.9 0.55 0.54 <0.50 17 06/19/02 ---- 350161 9.7 0.99 <0.50 <0.50 38 07/19/02 --- 52 1.1 <0.50 <0.50 <0.50 6 8/12-14/021'1 ---- <50 <0.50 1.1 <0.50 0.71 <2.5/<1.0131 08/22/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 09/20/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.5 10/21/02 --- <50 <0.50 <0.50 <0.50 <0.50 <2.5 11/05-06/021'1 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.51<2.0131 11/21/02 --- <50 <0.50 <0.50 <0.50 <0.50 <2.5 12/18/02 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0 01/23/03 <50 <0.50 <0.50 <0.50 <0.50 <2.0 02/04-06/031'1 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0/<2.0131 03/21/03 --- <50 <0.50 <0.50 <0.50 <0.50 <2.0 04/22//03 --- 170161 2.7 <0.50 <0.50 <0.50 11 05/20/03 ---- 140 1.4 <0.50 <0.50 <0.50 4.1 5/27-30/031'1 ---- <50 <0.50 <0.50 <0.50 <0.50 <2.0/<0.50131 06/20/02 ---- 140 1.4 <0.50 <0.50 0.74 4.2 07/22/03 --- <50 <0.50 <0.50 <0.50 0.59 <2.0 08/22/03 --- 750 7.4 5.2 9.4 6.2 <4.0 8/26-29/0311 <50 <0.50 <0.50 <0.50 <0.50 <2.0/<0.50131 06940 ENS oration 1. i ■� � r � IIIIII� � I� r � 1. � � I� � II. II. 11.