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Wi • • 1 , Table 3. Analytical Results for Groundwater-Volatile Organic Compounds -Chevron Service Station#9-6171, 6633 Pacific Avenue, Stockton,California continued E%PT ANATION ANATAMC7AT, LABORATORY 1,2-DCA= 1,2-Dichloroethane APPL= Agriculture do Priority Pollutants Laboratories,Inc of Fresno,California 1,l-DCA- 1,l-Dichloroethane SAL= Superior Analytical Laboratory of San Francisco,California TCE=Trichloroethene GTEL=Groundwater Technology Environmental Laboratories,Inc,of Concord, California PCE=Tetrachloroethene SEQ= Sequoia Analytical Laboratories of Redwood City,California B= Benzene Quanterra =Quantetra Environmental Services of West Sacramento,California T=Toluene E= Ethylbenzene NOTFS X =xylenes VOCs = Volatile Organic Compounds ' Well has been dry since December 15, 1969 sampling event ppb = Parts per billion 3 Chloroform detected at 14 ppb Other VOCs not detected at detection limits of 0 5 to 10 ppb ND= Not detected ' Not detected at detection lunula of 0 5 to 10 ppb Not detected at detection limits of 3 to 20 ppb ANAL YTIrAr_Mt:runnc ' BTEX concentrations included on Table 2 Other VOC's not detected at detection limits of 5 to 50 ppb All other VOC's were non-detectable with detections limits ranging from 40 to 200 ppb VOC =EPA Method 8240/EPA Method 624& 7 All other VOC's were non-detectable with detection limits ranging from 100 to 700 ppb EPA method 8260 ' All other VOC's were non-detectable with detection limits ranging from 22 to 110 ppb Volatile Tentatively Identified Compounds not present at estimated detection linuts of 100 ppb Positive identification or specification between isomers cannot be made without retention time standards 10 Volatile Tentatively Identified Compounds not present at estimated detection limits of 250 ppb Positive identification or specification between isomers cannot be made without retention time standards " Volatile Tentatively Identified Compounds not present at estimated detection limits of 56 ppb Positive identification or specification between isomers cannot be made without retention time standards 12 Split samples were taken by Levine-Fricke and analyzed by Quantetra Environmental Services of West Sacramento,for EPA Method 8260 Cie-1,2-Dichlomethene was detected at 16 ppb All other constituents were non-detectable All other constituents were non-detectable u Cis-1,2-Dichloroethene was detected at 10 ppb All other constituents were non-detectable 'r Benzene and toluene were detected at 1 3 and 12 ppb, respectively All other constituents were non- detectable Toluene was detected at 2 l ppb All other constituents were non-detectable Cis-1,2-Dichlomethane was detected at 19 ppb Chloroform, 1,1,1-Trichloroethane,benzene,and toluene were detected at 1 7,7 6, 16,and 1 1 ppb,respectively " ChIoroform, 1,1,1-trichloroethane, benzene, and toluene were detected at 3 3, 9 0, 13, and 16 ppb, respectively Cts-1,2-dichloroethane and 1,1,1,2-tetrachloroethane were detected at 19 and 1 8 ppb,respectively 512 tvOC TQM 2