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l Sequoia 680 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 /> X117 Analytical 819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Blaine Tech Services Client Prol ID Chevron 9-4275/971125-51 Sampled 11/25/97 <br /> 1680 Rogers Avenue Sample Descript MW-8 Received 11/26/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/09/97 <br /> Attention PranThie Lab Number 9711G19-08 Reported 12f12197 <br /> QC Batch Number GC120997BTEX06A <br /> Instrument ID GCHP6 <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 50 170 <br /> Methyl t-Butyl Ether 25 - <br /> Benzene 050 3 5 <br /> Toluene 050 N D <br /> Ethyl Benzene 060 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Unidentified HC C6-C8 <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 1360 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA A YTICAL - ELAP #1210 <br /> rroj <br /> g enner <br /> ect Manager Page 24 <br />