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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 01 DO <br /> Blaine Tech Services --- -- - Client Prol ID Chevron 9-1918/970207-H1 Sampled 02/10/97 <br /> 1680 Rogers Avenue Sample Descript TB 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 9702482-08 _ 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 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 103 <br /> • <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SE IA ALYTICAL - ELAP #1210 <br /> �(( <br /> enner <br /> Project Manager Page 8 <br />