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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 /> qff Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br />,- Blaine Tech Services Client Prot ID Shell Stockton/970709-F1 - Sampled 07/09/97 <br /> 1680 Rogers Avenue Sample Descnpt DUP Received 07/10/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 07/16/97 <br /> Attention Fran Thle Lab Number 9707592-13 _ Reported 07123197 -' <br /> dC Batch Number bC071697BTEX2IA <br /> Instrument ID GCHP21 <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 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 79 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> aSEOUOIAICAL - ELAP #1210 <br /> Project Manager Page 14 <br />