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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> [� _] u —1 404 N W.get Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br />' A Engineering Client Project ID Exxon #7-3942, Stockton, CA Sampled Feb 17, 1997 <br /> 3841 N Freeway Blvd , #145 Sample Matrix Air Received Feb 18, 1997 <br /> Sacramento, CA 95834 Analysis Method EPA 5030/8015/8020 Reported Feb 21, 1997 <br /> Attention Kynacos Kyriacou First Sample # 702-0490 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />' Reporting Sample Sample <br /> Analyte Limit I D I ❑ <br /> pg/L 702-0490 702-0491 <br /> UVB influent Oxidizer <br /> to Oxidizer Effluent <br /> Purgea6le <br />' Hydrocarbons 50 530 N D <br /> Benzene 0 050 19 028 <br /> Toluene 0 050 85 1 0 <br /> Ethyl Benzene 0,050 18 023 <br /> Total Xylenes 0 050 90 1 2 <br />' Chromatogram Pattern Gasoline <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 <br /> Date Analyzed 02/19/97 02/19/97 <br />' instrument Identification GCHP-7 GCHP-7 <br /> Surrogate Recovery, % 89 74 <br /> (OC Limits = 60-140%) <br />' Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporhng I-lit <br />' SEQUOIA ANALYTICAL, ELAP #1624 <br /> VEdana M"6elschner <br /> Project Manager/Sacramento Laboratory <br /> 1 7020490 EAE <1> <br />