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i1 Sequoia680 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(510)988 9673 <br /> �II7� Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> i <br /> Blaine Tech Services Client Prol ID Chevron 9-8632/980212-C1 Sampled 02/12/98 <br /> 1680 Rogers Avenue Sample Descrlpt SUMP Received 02/13/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8020 Analyzed 02/25/98 <br /> Attention Fran Thie Lab Number 9802902-05_ Reported 03JO2198 <br /> QC Batch Number GCO22598BTEX07A m <br /> Instrument ID GCHP7 <br /> BTEX Distinction <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Benzene 050 21 <br /> Toluene 050 2 0 <br /> Ethyl benzene 0 50 13 <br /> Xylenes (Total) 050 26 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 90 <br /> 9 <br /> Analytes reported as N D were no present above the stated limit of detection <br /> SEQUOIA ALYT L - ELAP #1210 <br /> Peggy Pe ne <br />� 9 <br /> Project Manager Page 10 <br />