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TABLE 1 -GROUNDWATER CHEMICAL ANALYTICAL DATA <br /> Former Tosco(76) Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> i <br /> i <br /> EXPLANATION ANALYTICAL LABORATORY <br /> ppb—parts per billion Sequoia Analytical,Walnut Creek,CA (FLAP#127 1) <br /> <100=analyte not detected at or above the laboratones reporting limit Sequoia Analytical, San Carlos, CA(FLAP#2360) <br /> NA = Not Analyzed Sequoia Analytical, Sacramento, CA (FLAP#1624) <br /> Sequoia Analytical, Morgan Hill, CA(ELAP#1210) <br /> * =Sample from quarterly monitoring data <br /> =Samples analyzed using EPA Method 8260B <br /> =Laboratory report indicates gasoline C6-C12 <br /> 3=Laboratory report indicates weathered gasoline C6-C12 <br /> a Laboratory report indicates unidentified hydrocarbons C6-C12 <br /> ANALYTICAL METHODS <br /> TPHg=Total Petroleum Hydrocarbons as gasoline according to EPA Method 8015B <br /> Benzene,Toluene,Ethylbenzene, and Total Xylenes according to EPA Method 8021B <br /> MtBE— methyl tertiary butyl ether according to EPA Method 8021 B <br />