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well as total xylenes contamination <br />. Table 7. Groundwater Sample Results from Quarterly Monitoring Dated 15 May 2000. <br /> Sample TPH- i TPH a Motor MTBE2 Benzenez Toluenez Ethyl Total <br />. ID Gasoline Diesel Oils Benzene' Xylenes' <br />. MW-1 ND 330 ND ND ND ND 0.0006 00 07 <br />. MW-2 0 28 1.4 120 00045 0.0026 0.0034 0.001 00082 <br />. MW-3 ND 50 ND ND ND ND ND ND <br /> Notes All results shown in ppm <br />. 'Detection limits for analyses on this sample were 0 05 ppm <br /> 213etection limits for analyses on this sample were 0 0005 ppm <br />. 3Detection limits for analyses on this sample were 1 ppm <br /> 4Diesel detection limit 0 5 ppm <br /> ND=Not detected at or above the indicated laboratory detection limit <br /> Grab samples from MW-1 and MW-3 were collected on 22 December 1999 after well <br />. development and purging of the monitoring wells as described in the Work Plan dated 28 <br /> January 1999 and the Report of Investigation dated 3 February 2000 The results of the <br /> laboratory analyses on two groundwater samples are presented in Table 8 below <br /> TPH-Diesel was present in both groundwater samples at concentrations of 310 ppm and 110 <br /> ppm Ethylbenzene and xylenes were also found in MW-1, which is located at the former UST <br /> diesel location <br /> Table 8 Groundwater Sample Results from Report of Investigation Dated 3 February 2000. <br /> Sample TPH- TPH- Motorz z z Ethyl Total <br />• ID Gasolene' Diesel' Oils3 MTBE Benzene Toluene Benzenez Xylenesz <br /> MW-1 ND 310 ND ND ND ND 0.0025 0 004 <br />• MW-3 I ND 110 ND ND ND ND ND ND <br />• Notes All results shown in ppm <br /> 'Detection limits for analyses on this sample were 0 05 ppm <br />. zDetection limits for analyses on this sample were 0 0005 ppm <br />• 3Detection limits for analyses on this sample were l ppm <br /> 4Diesel detection limit 0 5 ppm <br />• ND=Not detected at or above the indicated laboratory detection limit <br /> The following table from the Sierra Pacific report completed in 1997 is included here to provide <br /> information regarding the extent of contamination at the site <br /> Environeering,Inc Project No 00-0 11 08 13 <br /> i <br />• <br />• <br />