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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (9Z5)988-9600 FAX(915)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> a- )wr Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1665 FAX(707) 791-0342 <br /> is <br /> Blaine Tech Services Client Prol ID Chevron 9-8632/981124-J1 Sampled 11/24/98 <br /> 1680 Rogers Avenue Sample Descrlpt MW-2 Received 11/25/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/05/98 <br /> Attention Christine Lillie Lab Number 9811H52-02 Reported 12/09f98 <br /> QC Batch Number GC120598802004A <br /> Instrument ID HP4 <br /> Total Purgeable Hydrocarbons (TPPH) with BTEX and MTBE <br /> Anaiyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 250 550 <br /> Methyl t-Butyl Ether 12 260 <br /> Benzene 2 5 110 <br /> Toluene 2 5 N D <br /> Ethyl Benzene 2 5 58 <br /> Xylenes (Total) 2 5 16 <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 102 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> 9ary <br /> Project Manager Page 5 <br />