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Sequoia 680 Chesapeake Dn�e Redwood Ctty CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> alAnalytical <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> V40 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 911 9600 FAX(916) 911 0100 <br /> tA Engineering Client Project ID Exxon # RS 7-3942, Stockton, CA Sampled Feb 20, 1997 <br /> 3841 N Freeway Blvd , #145 Sample Matrix Air Received Feb 21, 1997 <br /> Sacramento, CA 95834 Analysis Method EPA 5030/8015/8020 Reported Feb 26, 1997 <br /> Attention Kyriacos Kyriacou First Sample # 702-0614 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />' Reporting Sample <br /> Analyte Limit I D <br /> pg/L 702-0614 <br />' UV$Lower Effluent/ <br /> Oxidizer Influent <br /> Purgeable <br />' Hydrocarbons 50 610 <br /> Benzene 0 050 21 <br /> Toluene 0 050 94 <br />' Ethyl Benzene 0 050 21 <br /> Total Xylenes 0 050 110 <br />' Chromatogram Pattern Gaslolne <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 <br /> Date Analyzed 02/21/97 <br />' Instrument Identification GCHP-7 <br /> Surrogate Recovery, % 89 <br /> (QC Limits = 60-140%) <br />' Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected at or above the reporting limit <br />' SEQUOIA ANALYTICAL, ELAP #1624 <br /> repAt,�Ad . 5C*Af1F�—E1,4 � <br /> dana M Belschner <br /> Project Manager/Sacramento Laboratory <br />' 7020614 EAE <1> <br />