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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> IT) 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 /> 'Blaine Tech Services Client Prof ID� Chevron 9-1918/970207-Hl - - - Sampled- 02/10/97- ,< <br /> 1680 Rogers Avenue Sample Descript MW-14 Received 02/10/97 <br /> San Jose, CA 95112 Matrix LIQUID - <br /> Analysis Method 8015Mod/8020 Analyzed 02/12/97 <br /> Attention_ Fran Thie Lab Number 9702482-07 Reported 02118197 <br /> QC Batch Number GCO21297BTEX06A <br /> Instrument ID GCHP06 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 84 <br /> i� <br /> Analytes reported as D were not present above the stated limit of detection <br /> SEQ I A YTICAL - ELAP #1210 <br /> y er <br /> Project anager Page 7 <br />