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680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> Sequoia <br /> 404 N WLget lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 8 t9 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Enviros Client Prod ID Shell 1267 Country Club, Stck Sampled 04/04/97 <br /> 270 Perkins Ave Sample Descnpt SB-4-Liq Received 04/08/97 <br /> Sonoma, CA 95476 Matrix LIQUID Extracted 04/15/97 <br /> Analysis Method EPA 8015 Mod Analyzed 04/16/97 <br /> Attention Joe Neely Lab Number 9704512-12 Reported 04f22197 <br />)C Batch Number GC041497CHBPEXA <br /> nstrument ID GCHPI9A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br /> TEPH as Diesel 250 13000 <br /> Chromatogram Pattern C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 91 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Greg ry <br /> Project Manager Page 30 <br />