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• s <br /> 7': <br /> SIERRA <br /> Table 2 Analytic Results for Ground Water - Chevron Seivice Station #l9-6171, 6633 Pacific Avenue, Stockton, California (continued) <br /> EXPLANATION ANALYTIC LABORATORIES <br /> TPPH(G)=Total Purgeable Petroleum Hydrocarbons as Gasoline SEQ =Sequoia Analytical Laboratory of Redwood City California <br /> TOG =Total Oil and Grease GTEL=Groundwater Technology, Inc, of Sacramento,California <br /> B=Benzene SAL =Superior Analytical Laboratory of Martine/ California <br /> T=Toluene <br /> E=Ethylbenzene NO 1 ES <br /> X=Xylenes <br /> EDB =Ethylene dibromide t This well was dry <br /> FC =Fecal coliform bacteria Typical gasoline pattern not present Peak at 7 2 minutes subtracted from gasoline range before <br /> =Not analyzed/not applicable calculating gasoline concentration <br /> DI IS=Department of Health Servu.es '* Non-gasoline components which wc_rc not ide.ntifit.d by the laboratory present in sample at 150 <br /> MCLs=Maximum Contaminant Levels ppb 11/29/90 Non-gasoline components which were not identified by the laboratory present in <br /> RALs = Recommended Action Levels sample at 300 ppb, 3/14/91 <br /> NE=Not established ' Gasoline rang(,conccntration reported Peaks not associated with gasoline are observed early in <br /> the chromatogram <br /> ANALYTIC METIIODS 2 Gasoline range concentration reported The chromatogram shows only a single peak <br /> Both gasoline and a single solvent peak are observed in the chromatogram <br /> 8015=EPA Method 5030/8015 for TPPH(G) ° Both gasoline and multiple solvent peaks were observed in the chromatogram <br /> 602 = EPA Method 602 for 8= 5 Both gasoline and a single solvent peak(chlorinated)wert_observed in the chromatogram <br /> 8020=EPA Method 8020 for BTEX 6 Gasoline range concentration reported, peaks are representative of tetrachloroethene and trace <br /> 504=EPA Method 504 for EDB amount of gasoline <br /> 503E =Standard Methods Method 503E for TOG <br /> 910 =EPA Method 910 for Fecal coliform bacteria <br /> 14604T GW <br />