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Table 4. Sierra Pacific Soil Sample Results from Report of Investigation Dated 4 February 1997. <br /> Sample ID MTBE2 Benzene Toluene' Eth lbenzene' Xylenes' THP- 1 TOG' <br /> B-1-10 NA NA NA NA NA NA NA <br /> B-1-15 ND ND ND ND ND ND ND <br />. B-1-20 NA NA NA NA NA NA NA <br /> B-1-30 NA NA NA NA NA NA NA <br /> r B-2-10 NA NA NA NA NA NA NA <br /> B-2-15 ND ND ND 0.3 1.3 427 10100 <br /> B-2-20 NA NA NA NA NA NA NA <br /> B-2-30 ND ND 0.05 007 0.29 43 15000 <br /> B-3-10 ND ND 0.5 1.2 6.6 855 NA <br />. B-3-15 NA NA NA NA NA NA NA <br /> B-3-20 ND 0.06 0.23 0.09 062 54 NA <br /> B-3-30 ND 0.06 0.21 017 076 126 NA <br />. B-4-10 ND ND ND ND ND ND ND <br />. B-4-15 NA NA NA NA NA NA NA <br /> B-4-20 ND ND ND ND ND ND ND <br /> B-4-30 ND ND ND ND ND ND ND <br />• Notes <br /> rResults are given in ppm <br /> 'Detection limits for analyses on this sample were 1 ppm <br /> 2Detection lirruts for analyses on this sample were 0 005 ppm <br /> ND=Not detected at or above the indicated laboratory detection limit <br /> NA= Sample was not analyzed <br /> r 4.4 Groundwater Sample Analysis Results <br />• Groundwater grab samples were taken on 5 October 2000 The results, found in Table 5 below, <br />• indicate contamination of all compounds except motor oils and MTBE in B-6 B-6 is located in <br /> the vicinity of the former used oil USTs The groundwater in B--6 indicates that the former used <br />. oil USTs continue to contanunate the surrounding area No contamination was present in the <br /> groundwater in B-7, located in the vicinity of the former diesel USTs <br />• <br />• <br /> r <br />• <br />• <br />• <br />• <br />• Environeering,Inc Project No 00-01108 11 <br />• <br />• <br />