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Table 4 Groundwater Analytical Results Chevron Service Station#9-2033 508 West Charter Way Stockton,California EXPLANATIONS - Groundwater monitoring data and laboratory analytical results prior to May 31,2000,were compiled from reports prepared by Blaine Tech Services,Inc I 2-DCA= 1 2-Dichloroethane Cd=Cadmium Pb=Lead (ppb)=Parte per bi Ilion Cr=Chromium Zn=Zinc TOG—Total Oil and Grease Ni=Nickel -- Not Analyzed 1 2-Methylnaphtalene and Naphthalene were 8 7 and 33 ppb respectively 2 2-Methylnaphtalene and Naphthalene were 8 7 and 50 ppb respectively Naphthalene was detected at 34 ppb 2-Methylnaphtalene and Naphthalene were 5 3 and 35 ppb respectively ` Diethylphthalate was detected at 6 9 ppb 6 Naphthalene was detected at 6 8 ppb 7 All other Scmrvolatile Organic Compounds(SVOCs)by EPA Method 8270 were ND,except for Bis(2-ethylhexyl)phthalate was detected at 27 ppb R All othei Voiatile Organic Compounds(VOCs)by EPA Method 8010 were less than the reporting limit 9 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for B is(2-ethylhexyyl)phth al ate was detected at 12 ppb 10 All other VOCs by EPA Method 8010 were less then the reporting limit,except for Chloroform which was detected at 1 7 ppb " Laboi atory report indicates that this sample was analyzed outside of the EPA recommended holding time 12 All sample containers were broken on this date i' All other VOCs by EPA Method 8021 were lefts then the reporting limit 14 All othei SVOCs by EPA Method 8270 Acre less than the reporting limit,except for Bis(2-ethylhexyl)phthalate was detected at 71 ppb j5 All other SVOCS by EPA Method 8270 were less than the reporting limit,except for Bis(2-ethylhexyl)phth al ate was detected at 26 ppb 16 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for Bis(2-ethyl hexyl)phthal ate was detected at 13 ppb 17 All other SVOCs by EPA Method 8270 were less than the reporting limit 18 All other SVOCS by EPA Method 8270 were less than the reporting limit,except for Bis(2-ethylhexyl)phthalate was detected at 23 ppb,and Chloroform at I ppb 19 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for Chloroform was detected at 15 ppb 20 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for Diethylphthalate was detected at 2 ppb and bis(2-Ethylhexyl)phthalate was detected at 16 ppb Z1 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for Bis(2-ethylhexyl)phthalate was detected at 7 ppb 22 Laboratory report indicates this sample was extracted past the 7 day holding time for TPH 21 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for Bis(2-ethylhexyl)phthalate was detected at 4 ppb 24 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for Bis(2-ethylhexyl)phthalate was detected at 2 ppb 25 All other SVOCs by EPA Method 8270 were less than the reporting limit,except for Bis(2-ethylhexyl)phthalate was detected at 3 ppb 9-2033086847 , 08/08/05 � � i 11� � �1• � � � � � � � � f1♦ ■mow � ��