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• Sequoia680 Chesapeake Drive Redwood City,Ca 94063 (415) 364 9600 FAX(415)364 9233 <br /> 404 N Wiget Lara Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Blaine Technical Services Client Prolj ID _ Chevron 9-8284,960820-J1 Sampled 08/20/96 <br /> 985 Timothyy Drive Sample Descript MW-4 Received 08/21/96 <br /> San Jose, CA 95133 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/27/96 _ <br /> Attention Jim Keller Lab Number 9608C70-04 Reported 09/04196 <br /> QC Batch Number GCO82796BTEX03A <br /> Instrument ID GCHP03 <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 25 120 <br /> Benzene 050 N D <br /> Toluene 050 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 /> Trifluorotoluene 70 130 96 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Peggy Penner <br /> P ct Manager Page 12 <br />