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T=w <br /> f <br /> Mr. Kyle Christie <br /> December 9, 1988 <br /> Page 2 <br /> '[able I. Analytical Results of August 26, 1988, Groundwater Samples <br /> EPA Method 602 EPA Method 8015, modified <br /> Sample Benzene, Ethylbenzene, Toluene, Xvlene, <br /> number ug/l ug/l ug,R ug/l TPH, mg/I <br /> PR-1 ND ND ND ND NA <br /> PR-2 ND ND 2.0 30 NA <br /> BHD-1 6,050 2,000 220 1,000 NA <br /> E-5 2.690 270 390 870 NA <br /> E-8 271 NDa 8 46 NA <br /> E-9 4,700 1,400 4,900 5,100 NA <br /> T-I NA NA NA NA ND <br /> Actin <br /> level 0.7 680 100 620 NE <br /> Detection <br /> limit 1 0.5 0.5 0.5 0.5 0.2 <br /> aDetection limst = 2.5 ug/l <br /> bDHS Drinking Water Action Levels, January 1987, <br /> Note: ND = nondetectable; NA = not analyzed; NE = no established level for this <br /> constituent. <br /> Table 2. Comparison of Benzene Concentrations in Groundwater, <br /> May 2, 1985, and August 26, 1988 <br /> Benzene, ug/I Benzene, ug/l <br /> \; <br /> Sample number (Ma 2, 1988 Y ) (August 26, 1988) <br /> Z, PR-1 ND ND <br /> PR-2 ND ND <br /> BHD-1 4,000 6,050 <br /> E-5 5,85() 2,690 <br /> E-8 160 271 <br /> E-9 1,940 4,700 <br /> BROWN AND CALDWELL <br /> 72�SSMEET SACRAMENlXXCA,,FpRftt'L l4'7M4(936144/-0123 <br />