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."►_/' 680 Chesapeake Dnvc Redwood City CA 94063 (415) 364 9600 FAX <br /> Sequoia (415) 364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 92 t 9600 FAX(916)921 0100 <br /> Pacific Environmental Group, Inc Client Project ID Arco 2133, Stockton, CA Sampled Sep 25, 1996 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix Water Received Sep 27, 1996 <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/6020, DHS Luft Reported Oct 11, 1996 <br /> Attention Greg Barclay First Sample # 609-1247 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limrt I D I D I.D. i D I D I D <br /> dug/L 609-1247 609-1249 609-1250 609-1255 609-1261 609-1262 <br /> MW1 MW3 MW4 E5 E-11 E-12 <br /> Purgeable <br /> Hydrocarbons 50 1 500 N D N D N D 400 N D <br /> Benzene 050 110 N D N D N D 40 N D <br /> Toluene 050 97 N D N D N D N D N D <br /> Ethyl Benzene 050 94 N D N 0 N D 15 N D <br /> Total Xylenes 050 52 N D N D N D 33 N D <br /> Chromatogram Pattern Gasoline Gasoline <br /> C6-C12 C6-C12& <br /> Unidentified <br /> Hydrocarbons <br /> C6 C12 <br /> Qualrty Control Data <br /> Report Limit Multiplication Factor 40 1 0 1 0 1 0 1 0 1 0 <br /> Date Analyzed 10/04/96 10/03/96 10/03/96 10/04/96 10/04/96 10/04/96 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 112 94 94 94 105 <br /> (OC Limits = 60-140°/x) <br /> Purgeabie Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> *Matnx Interference <br /> SEQUOIA ANALYTICAL, ELAP #1624 <br /> 41c, >ror <br /> Linda C Schneider <br /> Project Manager/Sacramento Laboratory <br /> 6091247 PES <1> <br /> 46 <br />