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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 1900 Bates Avenue,Sure L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> �,�► Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Technical Services Client Prod ID 940816-Z1, Chevron, S221-5 Sampled 08%16/94 _ <br /> 985 Timothy Drive Sample Descript TB Received 08/18/94 <br /> San Jose, CA 95133 Matrix LIQUID - <br /> Analysis Method 8015Mod/8020 Analyzed 08/23/94 <br /> _Attention Jim Keller _ Lab Number 94081391-04 _ Reported 08124194 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 102 <br /> • <br /> Analytes reported as N D were not present strove the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> nne Chin <br /> Project Manager Page 4 <br />