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TABLE 2 <br /> GROUNDWATER ANALYTICAL RESULTS(TPH and BTEX)' <br /> ALDEN PARK <br /> Tracy,California <br /> Concentrations reported inµg/L <br /> Date Ethyl- Total <br /> TPHd <br /> Well ID Sampled TPHdsg TPHg Benzene Toluene benzene Xylenes <br /> SCREENING WQO 100 2 100 z 5 2 0.15 3 42 ' 29 2 17 Z <br /> LEVELS ESL 100 5 100 5 1001 <br /> 1 6 40 5 30 5 20 5 <br /> MW-2 01/30/98 NS NS NS NS NS NS NS <br /> (cont.) 07/20/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 10/17/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 01/23/01 NS NS NS NS NS NS NS <br /> 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 Well contained insufficient water to purge and sample <br /> 02/18/04 Well contained insufficient water to purge and sample <br /> 08/05/04 Well contained insufficient water to purge and sample <br /> 02/23/05 75 NA NS NS NS NS NS <br /> 08/18/05 <29NA NS NS NS NS NS <br /> 02/16/06 <50 NA NS NS NS NS NS <br /> MW-3 Well not sampled due to the presence of SPO <br /> 04/22/96 <500 NA <500 <0.2 <0.2 <0.3 <0.4 <br /> 04/02/97 NS NS NS _ NS NS NS NS <br /> 07/08/97 NA <50 <50 <0.5 <0.5 <0.5 <2 <br /> MW4 10/08/97 NA <50 50 <0.5 <0.5 <0.5 <2 <br /> 01/30/98 NA <50 69 <0.5 <0.5 <0.5 <1.5 <br /> 07/20/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 10/17/00 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> 01/23/01 <50 <50 <50 <0.5 <0.5 <0.5 <0.5 <br /> Page 2 of 16 from Scrence to Soiulrons <br />