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Q Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(5tO)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX 9l6 )921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707 792 1865 FAX(707) 792-0342 <br /> Blaine Tech Services Client Pro) ID Chevron 9-2033/980521-L1 Sampled 05/21/98 <br /> 1680 Rogers Avenue Sample Descript MW-1 Received 05/22/98 <br /> San Jose, CA 95112 Matrix LIQUID Extracted 05/26/98 <br /> Analysis Method EPA 8015 Mod Analyzed 05/28/98 <br /> Attentron Fran Thle Lab Number 9805E75-01 Reported 06103198 <br /> QC Batch Number GC0526980HBPEXZ <br /> Instrument ID GCHP46 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 5o 500 <br /> Chromatogram Pattern Unid -HC C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 84 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQIUOIA A LYTICAL - ELAP #1210 <br /> gory <br /> Project Manager Page 5 <br />