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ANALYTICAL SCIENCE ASSOCIATES,Inc. <br /> 475 EL ALAMO • DANVILLE, CA 94526 <br /> (415) 820-9058 (415) 547-6390 <br /> HLA PROJECT NO. 4167, 154.02 <br /> EXXON-STOCKTON <br /> ATTENTION: SARAH PROWELL � 19Ps <br /> SEPTEMBER 29, 1986 <br /> DATE SAMPLED: 9/23/86 <br /> DATE ANALYZED: 9/27/86 <br /> MATRIX: WATER <br /> TPH BENZENE TOLUENE XYLENE <br /> (GASOLINE) <br /> GW1 130,000 40,000 43,000 9,900 <br /> DETECTION LIMIT <br /> 50 ppb 1 ppb 1 ppb 1 ppb <br /> All values in ppb unless otherwise noted. <br /> Signed: <br /> William Prater �l/\ <br /> Senior Scientist <br /> HLA Note: Ground-water sample from excauation 21 ft. below grade. <br />