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TABLE 2 GROUNDWATER ANALYTICAL RESULTS(TPH,BTEX,and MTBE) VERNALIS PUMP STATION Vernalis,California Concentrations reported in pg/L unless noted Date Ethyl- Total Sample ID I Collected TPHd TPHdsg TPHg TPHmo Benzene Toluene benzene I Xylenes MTBE SCREENING WQO 100 1 100 ' 0.15 2 29 1 17 2 LEVELS ESL 100 4 100 4 --- 1 5'6 30AL 20 4,6 MW-3 05/21/02 <50 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA (cont.) 07/19/05 <50 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA 10/18/05 <73 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA 10/18/05D <73 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA 01/25/06 93012 95010'2 <50 NA <0.5 <0.5 <0.5 <1.5 NA 05/04/06*"1 NS NS NS NS NS NS NS NS NS 08/10/0611 NS NS NS NS NS NS NS NS NS 11/07/06 <50 NA <50 NA <0.5 <0.5 <0.5 <1.5 NA 01/24/0711 NS NS NS NS NS NS NS NS NS 05/01/0711 NS NS NS NS NS NS NS NS NS 08/06/0711 NS NS NS NS NS NS NS NS NS 10/29/0715 NS NS NS NS NS NS NS NS NS 01/28/08 79 <50 NS NS NS NS NS NS NS 07/28/98 150 <50 <100 <50 <0.3 <0.3 <0.5 <0.6 <10 11/05/98 <50 NA NA NA NA NA NA NA NA 05/21/02 <50 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA 07/19/05 <50 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA 10/18/05 <50 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA 01/25/06 290 8 150 8'9'10 <50 NA <0.5 <0.5 <0.5 <1.5 NA MW-4 05/04/06*11 NS NS NS NS NS NS NS NS NS 08/10/0611 NS NS NS NS NS NS NS NS NS 11/07/0611 NS NS NS NS NS NS NS NS NS 01/24/0711 NS NS NS NS NS NS NS NS NS 05/01/0711 NS NS NS NS NS NS NS NS NS 08/06/0711 NS NS NS NS NS NS NS NS NS 10/29/0715 NS NS NS NS NS NS NS NS NS 01/28/0816 NS NS NS NS NS NS NS NS NS 07/19/05 <50 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA MW-5 10/18/05 <50 NA <50 NA <0.5 <0.5 <0.5 <0.5 NA 03/16/06 <50 NA <50 NA <0.5 <0.5 <0.5 <1.5 NA 05/04/06* 72 13 J <50 <50 NA <0.5 <0.5 <0.5 <1.5 NA NEW -;;wAF-wL. Page 2 of 4 From Science to sofutrons