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' Sequoia(lluo684 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> `� 404 H 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 Prol ID Shell Stockton/970228-K1 Sampled 02/26/97 <br /> 1680 Rogers Avenue Sample Descript MW3 Received 02/28/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/07/97 <br /> Attention Fran Thie Lab Number 9702F41-05 Reported 03/12197 <br /> QC Batch Number GC030797BTEX02A <br /> Instrument 1D GCHP2 <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 5000 19000 <br /> Methyl t-Butyl Ether 250 N D <br /> Benzene 50 3100 <br /> Toluene 50 1400 <br /> Ethyl Benzene 50 290 <br /> Xylenes (Total) 50 1700 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 93 <br /> Analytes repo as N D were not present above the stated limit of detection <br /> S !A ANALYTICAL - ELAP #1210 <br /> enner <br /> Project Manager Page 5 <br />