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Sequoia 680 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 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Enviros Client Prol= ID Shell 1267 Country Club, Stck Sampled 04/04/97 <br /> 270 Perkins Ave Sample Descript SB-2-Liq Received 04/08/97 <br /> Sonoma, CA 95476 Matrix LIQUO Extracted 04/15/97 <br /> Analysis Method EPA 8015 Mod Analyzed 04/17/97 <br />, Attention Joe Neely Lab Number 9704512-10 Reported 04J22197 <br /> QC Batch Number GC0414970HBPEXA - <br /> Instrument ID GCHPI9B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 1000 25000 <br /> Chromatogram Pattern C9-C24 <br /> Surrogates Control Limits% % Recovery <br /> n-Pentacosane (C25) 50 150 96 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> f I <br />*®re0goryy <br /> Project Manager Page 27 <br />