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• groundwater was free of significant sand , silt , and/or other grit , and temperature, pH , and electrical conductivity readings stabilized . In this case , over three well volumes of water were removed from each well Measurements acquired Attendant to sampling appear on the well monitoring forms enclosed in Appendix A Subsequent to the purging of each well , a groundwater sample was collected either in a clean, disposable polyethylene bailer or from the discharge line of the submersible pump Each sample was transferred into one- liter amber glass sample bottles and Volatile Organic Analysis (VOA) vials containing sufficient hydrochloric acid preservative to reduce the pH of the sample to less than 2 0 Each sample container was promptly fitted with a teflon- lined screw cap , labeled, placed on ice, and transported under chain of custody to jL Analytical Services , Inc of Modesto , a California-state certified hazardous waste analytical laboratory As specified by Mr Infurna , analyses were subsequently performed for Total Petroleum Hydrocarbons as Diesel (TPH-D) , Total Petroleum Hydrocarbons as Gasoline (TPH-G) , benzene , toluene, ethylbenzene, and total xylenes (BTEX) using the LUFT Method (EPA Modified-8015 ) and EPA Method 8020 ( 602 ) RESULTS OF LABORATORY ANALYSES Copses of the results of certified analyses as received from JL Analytical Services are enclosed within Appendix A These results are summarized in Table 1 : Table 1 Results of Certified Laboratory Analysis of Groundwater Samples from Monitoring Wells MW-1 , MW-2 , and MW-3 on August 16 and 18 , 1993 Well Depth to TPH-D TPH-G B T E X Number Water (ppb) (ppb) (ppb) ----------------------------------------------------------- MW-1 7 43 ft 240 180 23 0 6 18 18 MW-2 7 12 ft 320 360 19 N D 6 2 MW-3 6 71 ft 150 N . D N. D N D N D. N D ----------------------------------------------------------- Method Detection 50 50 0 2 0 2 0 2 0 6 Limit Page 3