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Table I <br /> Groundwater Monitoring Data and Analytical Results <br /> Chevron Service Station 49-2033 <br /> 508 West Charter Way <br /> Stockton,California <br /> EXPLANATIONS <br /> GrouMwnter monitoring data and laboratory analytical results prior to May 31 2000,viere compiled from reports prepared by Blaine Tech Services Inc <br /> TOC=Top of C acing TPF[-G=Total Petroleum Hydrocarbons as 6asolme —=Not Measured/Not Analyzed <br /> (ft)=t est B_Benzene TBA='tertiary but)1 alcohol <br /> GWE=Groundv ater Elevation T= toluene RIPE=Di-isopropyl ether <br /> (mel)=Mean sea level E--I,thylbcnzene TAME=Tertiary amyl methyl ether <br /> DTW=Depth to Water X=Xylenes I I BE=Ethyl tertiary butyl ether <br /> rPH-D=Total Petroleum Hydrocarbons as Diesel MTBE=Methyl tertiary butyl ether QA=Quality Assurancc/rrip Blank <br /> reit-MO-rota)Petroleum I lydroLarbons as Motor Oil (ppb)=Parts per billion <br /> ^ 1 OC elevation altered due to wellhead maintenance on May 21 1998 <br /> i Lhroiriatogram pattern indicates an unidentified hydrocarbon <br /> MfBF by LPA Method 8260 <br /> 7 Due to laboratory error TPH-D vias not analyzed <br /> ' Odor <br /> ` t abomtory report indicates unidentified hydrocarbons>C 16 <br /> ° Laborator) report indicates gasohne C6-C 12 <br /> Lahoratory report indicates gasoline C6-C 12+unidentified hydrocarbons<C6 <br /> R All sample containers wore broken on this date <br /> ° Laboratory report indicates hvdroorbon pattern is present in the requested fuel quantitation range but does not resemble the pattern of the requested <br /> fuel 1 he pattern more closely resembles that of a heavier hydrocarbon mix <br /> 'p BTEX and M fBr by EPA Method 8260 <br /> " I aboratory report indicates the observed sample pattern is not typical of 92 tual/dieset It elutes in the DRQ range later than 92 fuel <br /> Lahoraton report indicates the observed sample pattern includes#2 ftiel/diesel and an additional pattern which elutes later in the DRO range <br /> Laboratory report indicates the observed sample pattern includes#2 fuel/diesel and an additional pattern which elutes earlier and later in the DRO range <br /> 'a Analysis%ith silica gel clean-up <br /> 1` t ahorainry confirmed analytical result <br /> 16 l aboratory report indicates the observed sample pattern includes 42 fuel/diesel an additional pattern whu.h elutes later in the DRO range and individual peaks eluting in the DRO range <br /> 1' t aboratory report indicates the observed sample pattern includes 42 fuel/diesel an additional pattern which elutes earlier in the DRO range and contains individual peaks eluting in the DRO range <br /> 'A I aborato€y report indicates the observed sample pattern is not typical of#2 fuel/dieset It elutes in the DRQ range later than#2 fuel and contains individual peaks eluting in the DRO range <br /> 19 Laboratory report indicates the observed sample pattern is not typical ofmotor oil The reported result is due to an individual peal,(s)eluting in the motor oil range <br /> 20 t aboratory,report indicates the observed sample pattern includes 42 fuel/diesel an additional pattern which etutes earlier in the DRO range and individual peaks clutmg in the DRO range <br /> 2' 1 aboraton report indicates the observed sample pattern is not typical of#2 fuel/diesel The reported result is due to an individual peal;(s)clutmg in the DRO range <br /> 2` Laboratory report indicates the observed sample pattern is not typical of#2 fuel/diesel It elutes in the DRO range earlier than#2 fuel and contains individual peaks eluting in the DRO range <br /> q0. 847 AsofQ�6 <br />