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TABLE 2 <br /> GROUNDWATER ANALYTICAL RESULTS(TPH and BTEX)1 <br /> ALDEN PARK <br /> Tracy,California <br /> Concentrations reported in gg/L <br /> Date Ethyl- Total <br /> Well ID Sampled TPHd TPHdsg TPHg Benzene Toluene benzene Xylenes <br /> SCREENING WQO 100 2 100 z 5 Z 0.15 s 42 z 29 2 17 2 <br /> LEVELS ESL 100 s 100 s 100 s 1 6 40 s 30 s 20 s <br /> MW-15 Well not sampled due to the presence of SPO <br /> MW-16 Well not sampled due to the presence of SPO <br /> 04/23/96 <500 NA <500 <0.2 <0.2 <0.3 <0.4 <br /> 04/02/97 NS NS NS NS NS NS NS <br /> 07/07/97 NS NS NS NS NS NS NS <br /> 10/08/97 NS NS NS NS NS NS NS <br /> 01/30/98 NS NS NS NS NS NS NS <br /> 07/20/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> MW-17 10/17/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> (well properly 01/23/01 NS NS NS NS NS NS NS <br /> destroyed in 4/06) 05/30/01 NS NS NS NS NS NS NS <br /> 03/11/03 NS NS NS NS NS NS NS <br /> 08/26/03 <50 NA NA NS NS NS NS <br /> 02/18/04 <50 NA NA NS NS NS NS <br /> 08/05/04 <50 NA NA NS NS NS NS <br /> 02/23/05 <50 NA NA NS _NS NS �_ NS <br /> 08/18/05 <29 NA NA NS NS NS NS <br /> 02/16/06 <50 NA NA NS NS NS NS <br /> MW-18 Well not sampled due to the presence of SPO <br /> Page 13 of 16 from Scrence to soiuhons <br />