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a_ 4 _� Sequoia 6$Q Chesapeake 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)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ' Ground Zero Analysis, Inc Client Pro, ID Pe 's Exxon, 95-036 Sampled 07/11/97 <br /> ' 2291 West March Lane, St 127D Sample Descriptx'PRE HB-8 7 53 Received 07/14/97 <br /> Stockton, CA 95207 Matrix SOLID Extracted 07/17/97 1 <br /> Analysis Method EPA 8015 Mod Analyzed 07/18/97 <br /> Attention John Lane Lab Number 9707705-01 Reported 07J23J97 <br /> OC Batch Number GC0717970HBPEXB - <br /> Instrument ID GCHPSA <br /> Fuel Fingerprint <br /> Analyte Detection Limit Sample Results <br /> mg/K9 mg/K9 <br /> Extractable Hydrocarbons . . 10 1 5 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C40 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 77 <br /> 0 1 <br /> Analytes reported as were not present above the stated limit of detection <br /> SEQ ALYTICAL - ELAP #1210 <br /> P ner <br /> Pro,ec anager Page 2 <br />