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14tolu 1 <br /> • Groundwater Momtonng go and Analytical Results - <br /> Chevron Servicion#9-2033 S <br /> 508 West Charter Way <br /> Stockton,California - <br /> EXPLANATIONS <br /> Groundwater monitoring data and laboratory analytical results prior to May 31,2000,were compiled from reports prepared by Blame Tech Services,inc <br /> TOC=Top of Casing TPH-G=Total Petroleum Hydrocarbons as Gasoline --=Not Measured/Not Analyzed <br /> (ft)=Feet B=Benzene TBA=Tertiary butyl alcohol <br /> GWE=Groundwater Elevation T=Toluene DiPE=Di-isopropyl ether <br /> (msl)=Mean sea level E=Ethylbenzene TAME=Tertiary amyl methyl ether <br /> DTW=Depth to Water X=Xylenes ETBE=Ethyl tertiary butyl ether <br /> TPH-D=Total Petroleum Hydrocarbons as Diesel MTBE=Methyl tertiary butyl ether QA=Quality Assurance/Trip Blank <br /> TPH-MO-Total Petroleum Hydrocarbons as Motor Oil (ppb)=Parts per billion <br /> ^ TOC elevation altered due to wellhead maintenance on May 21, 1998 <br /> 1 Chromatogram pattern indicates an unidentified hydrocarbon <br /> 2 MTBE by EPA Method 8260 <br /> 3 Due to laboratory error,TPH-D was not analyzed <br /> 4 Odor <br /> 5 Laboratory report indicates unidentified hydrocarbons>C16 <br /> 6 Laboratory report indicates gasoline C6-C 12 <br /> 7 Laboratory report indicates gasoline C6-C12+unidentified hydrocarbons<C6 <br /> B All sample containers were broken on this date <br /> 9 Laboratory report indicates hydrocarbon pattem is present in the requested fuel quantitation range but does not resemble the pattern of the requested <br /> fuel The pattern more closely resembles that of a heavier hydrocarbon mix <br /> 10 BTEX and MTBE by EPA Method 8260 <br /> 11 Laboratory report indicates the observed sample pattern is not typical of#2 fuel/diesel It elutes in the DRO range later than#2 fuel <br /> 12 Laboratory report indicates the observed sample pattern includes#2 fuel/diesel and an additional pattern which elutes later in the DRO range <br /> 13 Laboratory report indicates the observed sample pattern includes#2 fuelldiesel and an additional pattern which elutes earlier and later in the DRO range <br /> 34 Analyzed with silica gel clean-up <br /> 15 Laboratory confirmed analytical result <br /> 16 Laboratory report indicates the observed sample pattern includes#2 fuel/diesel,an additional pattern which elutes later in the DRO range and individual peaks eluting m the DRO range <br /> E7 Laboratory report indicates the observed sample pattern includes#2 fuel/diesel,an additional pattern which elutes earlier in the DRO range and contains individual peaks cluting in the DRO range <br /> 9-2033 x1s1#386$47 7 As of 11/07/05 <br />