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Table 13 <br /> Ozone Injection Well Monitoring Program <br /> Stockton Terminals Technical Committee <br /> Port of Stockton <br /> Stockton, California <br /> Ethyl- Total DO ORP <br /> Sample Water Sampling TPHg Benzene benzene Toluene Xylenes MTBE TBA Pre-Purge I Post-Purge Pre-Purge I Post-Purge <br /> Identification Zone Date (pg/L (pg/L) (pg/L) (pg/L) (pg/L) (pg/L) (pg/L (mg/1) (mV) <br /> Mid-Point Observation Well-A Zone <br /> PS/MW-20 A 02/08/06 <50 <0.50 <0.50 <0.50 <2.0 4.2 8.52 10.39 236 230 <br /> PS/MW-20 A 05/09/06 <50 <0.50 <0.50 <0.50 <2.0 2.2 2.85 1.60 -81 -91 <br /> PS/MW-20 A 08/10/06 <50 <0.50 <0.50 <0.50 <2.0 3.0 0.06 0.02 210.5 158.2 <br /> PS/MW-20 A 11/02/06 <50 <0.50 <0.50 <0.50 <0.50 2.5 1.2 0.84 164.8 161 <br /> PS/MW-20 A 01/30/07 <50 <0.50 <0.50 <0.50 <0.50 2.6 0.95 1.44 7.1 16.8 <br /> PS/MW-20 A 05/02/07 <50 <0.50 <0.50 <0.50 <0.50 1.6 0.92 1.96 98 119.3 <br /> PS/MW-20 A 07/31/07 <50 <0.50 <0.50 <0.50 <0.50 1.6 <5.0 0.71 0.65 260.7 265.8 <br /> PS/MW-20 A 10/31/07 <50 <0.50 <0.50 <0.50 <0.50 2.0 <5.0 3.13 3.73 70 77 <br /> PS/MW-20 A 02/05/08 Unable to locate/well buried <br /> PS/MW-20 A 05/05/08 Unable to locate/well buried <br /> PS/MW-20 A 08/04/08 Unable to locate/well buried <br /> PS/MW-20 A 09/25/08 Well Destroyed <br /> PS/MW-20 Historical Average -- 0.61 0.5 0.59 0.95 1.68 -- -- <br /> PS/MW-20A A 11/04/08 160 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 0.62 0.82 -154.6 -82.2 <br /> PS/MW-20A A 02/03/09 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 1.71 0.37 131.8 115.6 <br /> PS/MW-20A A 05/06/09 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 0.33 0.39 -170.1 -141.6 <br /> PS/MW-20A A 08/06/09 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 0.31 0.37 -171.6 -170.1 <br /> PS/MW-20A A 11/04/09 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 0.64 0.90 169 176 <br /> PS/MW-20A A 02/03/10 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 0.69 0.70 -117.1 -96.1 <br /> Mid-Point Observation Well-B Zone <br /> PS/MW-20B B 11/04/08 <50 2.1 <0.50 <0.50 <0.50 0.84 <5.0 0.56 2.47 -174.9 -93.0 <br /> PS/MW-20B B 02/03/09 100 <0.50 <0.50 <0.50 <0.50 2.4 <5.0 3.31 2.83 196.2 179.9 <br /> PS/MW-20B B 05/06/09 53 11 <0.50 <0.50 <0.50 1.3 <5.0 0.41 0.36 -192.6 -156.8 <br /> PS/MW-20B B 08/06/09 <50 3.1 <0.50 <0.50 <0.50 1.1 <5.0 0.37 0.40 -287.7 -269.2 <br /> PS/MW-20B B 11/04/09 <50 <0.50 <0.50 <0.50 <0.50 1.6 <5.0 1.03 1.09 -151 -150 <br /> PS/MW-20B B 02/03/10 <50 0.85 <0.50 0.51 0.70 0.74 <5.0 0.78 0.65 -104.5 -106.1 <br /> Trigger Wells-A Zone <br /> OW-2A A 02/08/06 <50 <0.50 <0.50 <0.50 <2.0 <0.50 5.24 9.23 52 20 <br /> OW-2A A 05/12/06 <50 <0.50 <0.50 <0.50 <2.0 <0.50 6.51 -28 3.05 46 <br /> OW-2A A 08/09/06 <50 <0.50 <0.50 <0.50 <2.0 <0.50 1.84 2.12 288 -18.5 <br /> OW-2A A 11/02/06 <50 <0.50 <0.50 <0.50 <0.50 <0.50 0.83 0.49 139.8 -10 <br /> OW-2A A 01/31/07 <50 <0.50 <0.50 <0.50 <0.50 <0.50 1.69 0.57 20.7 -8.09 <br /> OW-2A A 05/02/07 <50 <0.50 <0.50 <0.50 <0.50 <0.50 1.60 0.28 110.6 -26.5 <br /> OW-2A A 08/01/07 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 3.48 3.08 259.3 247 <br /> Trigger Well Concentration Limits pg/L: 0.15** 29 42 17 5 <br /> 1Q10 OzoneConcentration Tables.xls Page 4 of 6 <br />