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m = palm lm "w on • T4 s Groundwater lytical Resents Chevron Service Station 49-2033 508 West Charter Way Stockton,California EXPLANATIONS Groundwater monitoring data and laboratom anal)w al results prior to Ma% 31 2000 mere compiled from reports prepared hN Blaine l ech Sen lees inc 1,2-DCA= 12-Dichloroethane Cd=Cadmnlm Ph=Lead (ppb)-Part,,per billion Cr=Chromium 2-n=Zinc TOG= fatal Oil and Grease Ni=Nickel =Nrit Anal}red ' 2-Mithylnaphialene and Naphthalene were 8 7 and 33 ppb respect€vel) 2 2-MethyInaphialene and Naphthalene were 8 7 and 50 ppb respectwcl) 3 Naphthalene%%as detected at 34 ppb 4 2-Methy1naphtalene and Naphthalene here 5 l and 35 ppb respectively ` DiethvIphthalate was detected at 6 9 ppb Naphthalene%uas detected at 6 8 ppb 7 All other 5emivolatile Organic(ompounds(SVOCS)by EPA Method 8270 were ND except for Bis(2-ethvlhex%I)phthalate was detected at 27 ppb 9 Ail other Volatile Organic Compounds(VOCs)by LI'A Method 8010 were less than the reporting limit 9 All other SVOCs by FPA Method 8270 were less than the reporting limit except fo€ t3€s(2-ethi lhexytil)phthalate UL;detected at 12 ppb j1' All other VOCs by EPA Method 8010 were less then the reporting limit t,xcepi for(hloroform%%hich was detected at 1 7 ppb 11 Lahoratory report€ndmates that this samplc uas anahzed otrtside of the EPA recommended holding time 12 All sample contamm%tore broken on this date 11 All other VOCs by FPA Method 8021 here less then the reporting limit 14 All other SVOCs b) CPA Method 8270 were less than the mporting limit except foi Bis(2-eth)]hec)I)phihalatc%r%as detected at 71 ppb 15 All other SVOCs b) EPA Method 8270 acre less than tlu,reporting limit i.xccpt for Bis(2-eth)Ihex)I)phthatate"as detected at 26 pph 16 All other SVOCs by EPA Method 8270 were Icss than the reporting limit except for Bis(2-ethx Iht xNl)phthalate was detected at 13 ppb i' All other SVOCS h) F PA Method 8270 Acre Icss than the reporting limit 19 All other SVOC,,by CPA Method 8270 were less than the reporting I€mit except for Bis(2-ethvlhcxyl)phthalate uas detected at 23 pph and Chloroform at I pph iR All other SVOCs by FPA Method 8270 were less than the reporting limit except for Chloroform t%as deti.cAed at 15 ppb m All other SVOC r b) rPA Method 8274 were less than the reporting limit except for Diethylphthalatr. %sus detected at 2 ppb and bis(2-Ethylbextl)phthalate%vas detected at 16 pph 21 All other SVO(s by FPA Method 8270 were less than the reporting limit except for t3ts(2-eth)1hex)I)phthdlate was,detected at 7 ppb 22 Laboratory report indicates this sample%vas extracted past the 7 da) holding time for TPN z' All other SVO(s by EPA Method 8270 were less than the reporting limit,except for B€s(2-ethylheayl)phthalate was detected at 4 ppb 24 All other SVO(s by EPA Method 8270 were less than the reporting limit c\cept for fiis(2-ethylhex)I)phthalate was detected at 2 pph Z` All other SVOCS h) FPA Method 8270 were letiti than the reporting limit except for Bis(2-cthylhex)I)phthalate was detected at 3 pph 9-2031 f-4386847 12 As of 02!06106 I