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Sequoia 680 Chcvapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)938 9673 <br /> WIF Analytical 819 Smkcr,Avenue Suit,8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Pacific Environmental Group, Inc Client Project ID Arco 2133, Stockton Sampled 1 ped Mar 19, 1996 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix Water Received Mar 21, 1996 <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8015/8020 Reported Apr 3, 1996 <br /> Attention Greg Barclay First Sample # 603-1041 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit ID <br /> .ug/L 603-1041 <br /> BHD-1 <br /> Purgeable <br /> Hydrocarbons 50 4,200 <br /> Benzene 050 99 <br /> Toluene 050 28 <br /> Ethyl Benzene 050 360 <br /> Total Xylenes 050 320 <br /> Chromatogram Pattern Weathered <br /> Gasoline <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 <br /> Date Analyzed 03/29/96 <br /> Instrument Identification GCHP-2 <br /> Surrogate Recovery, % <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL Please Note <br /> 7Eroje <br /> P #1624 "Matrix Interference <br /> nda C Schneider <br /> ct Manager/Sacramento Labora ory <br /> 6031010 PES <5-- <br />