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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 /> Well ID Sampled nes <br /> TPHd TPHdsg TPHg Benzene Toluene benzene Xyle <br /> SCREENING WQO 100:1 2 100 2 5 2 0.15 s 42 Z 29 z 17 ` <br /> LEVELS ESL 100 s 100 s 100 5 1 6 40 s 30 s 20 s <br /> MW-19 <br /> 04/03/97 660 230 200 <0.5 <0.5 <0.5 <2 <br /> -°-- <br /> 04/03/97 D 1,200 480 140 NA <br /> (Well properly NA NA NA <br /> destroyed in 3/00) 07/09/97 NA 530 130 <0.5 <0.5 _ <0.5 <2 <br /> 10/08/97 NA 400 60 <0.5 <0.5 _ <0.5 <2 <br /> 01/30/98 NA <br /> MW-20 Well not sampled due to the presence of SPO <br /> 04/03/97 2,600 320 150 <0.5 <0.5 <0.5 <2 <br /> 07/09/97 NA 440 140 <0.5 <0.5 <0.5 <2 <br /> 10/08/97 NA 2,100 70 <0.5 <0.5 <0.5 <2 <br /> 01/30/98 NA 150 100 <0.5 <0.5 <0.5 <1.5 <br /> 07/20/00 4,000 2,100 <50 <0.5 <0.5 <0.5 <0.5 <br /> 10/17/00 2,100 1,100 <250 7 <2.5 7 <2.5 7 <2.5 7 <2.5 7 <br /> 01/23/01 2,400 1,300 <250 7 <2.5 7 <2.5 7 <2.5 � <2.5 <br /> MW-21 05/30/01 830 110/110 7 <250 7 <2.5 7 <2.5 7 <2.5 7 <2.5 7 <br /> 07/26/01 1,900 480 _ Q50 7 <2.5 7 <2.5 7 <2.5 7 <2.5 7 <br /> 10/30/01 1,900 1,000/760 s <250 <2.5 7 <2.5 <2.5 <2.5 7 <br /> _. .. <br /> 01/31/02 1,800 210/150 s <250 7 <2.5 7 <2.5 7 <2.5 7 <2.5 <br /> 01/31/02 (F) 1,500 150/<50 8 NA NA NA NA NA <br /> 04/23/02 2,100 540/450 8 <500 7 <5 7 <5 7 <5 7 <5 <br /> 07/24/02 2,400 270/230 8 <250 <2.5 7 <2.5 7 <2.5 7 <2.5 7 <br /> 11/25/02 2,100 780/590 s - <250 7 <2.5 7 <2.5 7 <2.5 <2.5 7 <br /> 03/11/02 2,000 260/260 s NA NA NA NA NA <br /> Page 14 of 16 From Science to Solutions <br />