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f ■ , Sequoia 689 Chesapeake Drive Redwood City C4 94063 (415) 364 9600 FAX(415) 364 9233 <br /> iii��•••�����j�iii 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 96W FAX(SIO)988 9673 <br /> VIly Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Pacific Environmental Group, Inc Client Project ID Arco 2093, Tracy, CA �o h ` _ Sampled Jul 18, 1996 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix Water ����� ,rr--Received Jul 19, 1996 <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8015/802 �eported Jul 30, 1996 <br /> Attention Greg Barclay First Sample # 607-0838 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with REX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit i D I D 1 D I D I D I D <br /> Ng/L 607-0838 607-0839 607-0840 607-0841 607-0842 607-0843 <br /> ATR-1 ATR-2 ATR-3 ATR-4 ATR-5 ATR-6 <br /> Flurgeable <br /> Hydrocarbons 50 N D N D 1,600 2,600 260 N D <br /> Benzene 050 N D N D 26 12 4 8 N D <br /> Toluene 0 50 N D N D 52 N D N D N D <br /> Ethyl Benzene 050 N D N D 70 52 N D N D <br /> Total Xylenes 050 N D N D 51 N D N D N D <br /> Chromatogram Pattern Gasoline Weathered Gasoline <br /> C6-C12 Gasoline <C7& >C8 <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 20 10 1 0 1 0 <br /> Date Analyzed 07/24/96 07/24/96 07/24/96 07/24/96 07/24/96 07/24/96 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 79 86 115 74 80 84 <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 ANALYT CAL, FLAP #1624 <br /> Inds Sc <br /> r C hneider <br /> Project Manager/Sacramento Laboratory <br /> 6070838 PES <1 5 <br />