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i • <br /> Table 2 Analytical Results for Groundwater-Volatile Organic Compounds-Chevron Service Station#9-6171,6633 Pacific Avenue,Stockton, California <br /> (continued) <br /> EXPLANATION ANALYTICAL LABORATORIES <br /> 1,2-DCA = 1,2-Dichloroethane APPL= Agriculture&Priority Pollutants Laboratories,Inc of Fresno,California <br /> 1,1-DCA = IJ-Dichlorocthane SAL = Superior Analytical Laboratory of San Francisco,California <br /> TCE=Trichloroethene GTEL= Groundwater Technology Environmental Laboratories,Inc ,of Concord, California <br /> PCE =Tetrachloroethene SEQ = Sequoia Analytical Laboratones of Redwood City,California <br /> B = Benzene <br /> T = Toluene NOTES <br /> E = Ethylbenzene <br /> X = Xylenes ' Well has been dry since December 15, 1989 sampling event <br /> VOCs = Volatile Organic Compounds x Chloroform detected at 14 ppb Other VOCs not detected at detection limits of 0 5 to 10 ppb <br /> ppb = Parts per billion 3 Not detected at detection limits of 0 5 to 10 ppb <br /> ND = Not detected * Not detected at detection limits of 3 to 20 ppb <br /> BTEX concentrations included on Table 2 Other VOC's not detected at detection limits of 5 to 50 ppb <br /> ANALYTICAL METHODS 6 All other VOC's were non-detectable with detections limits ranging from 40 to 200 ppb <br /> 7 All other VOC's were non-detectable with detection limits ranging from 100 to 700 ppb <br /> VOC = EPA Method 82401EPA Method 624 ' All other VOC's were non-detectable with detection limits ranging from 22 to 110 ppb <br /> Volatile Tentatively Identified Compounds not present at estimated detection limits of 100 ppb Positive <br /> identification or specification between isomers cannot be made without retention time standards <br /> 10 Volatile Tentatively Identified Compounds not present at estimated detection limits of 250 ppb Positive <br /> identification or specification between isomers cannot be made without retention time standards <br /> 1° Volatile Tentatively Identified Compounds not present at estimated detection limits of 56 ppb Positive <br /> identification or specification between isomers cannot be made without retention time standards <br /> 5121voc TQM <br /> 2 <br />