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Table 9 <br /> C-Sparge System Pilot Test <br /> Groundwater Chemical Analytical Data <br /> Former Unocal Service Station #0187 <br /> 437 East Miner Avenue, Stockton <br /> Explanation: <br /> Wells were not purged prior to sampling. <br /> DO- Dissolved oxygen; reading were taken after collection of groundwater samples. <br /> TPHg =Total Petroleum Hydrocarbons as gasoline <br /> MTBE= Methyl tert-butyl ether <br /> ppm =parts per million <br /> ppb= parts per billion <br /> Ill Wells purged prior to sampling. <br /> J21 Laboratory report indicates gasoline C6-C12. <br /> [al MTBE by EPA Method 8260. <br /> {4] Laboratory report indicates weathered gasoline C6-C12. <br /> 151 Laboratory report indicates unidentified hydrocarbons C6-C12 <br /> {6] hydrocarbon pattern is present in the requested fuel quantitation range, <br /> but does not resemble the pattern of the requested fuel. <br /> First ozone microsparge system began operating on December 12, 2000. <br /> Second ozone microsparge system began operating on April 26,2002 <br /> 06940 . ENSISoration <br /> r I� I� � IIS rr• I� I� �w r■� � I� � I• � �■�r I� � I� <br />