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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 (510) 988 9600 FAX(510)988 %73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Blaine Tech Services Client Prod ID Shell Stockton/971224-D1 Sampled 12/24/97 <br /> = 1680 Rogers Avenue Sample Descript MW-13 Received 12/24/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> __- Analysis Method 80i 5Mod/8020 Analyzed 01/07/98_ <br /> Attention Fran Thie Lab Number 9712F98-02 Reported O1 j13 j98 <br /> QC Batch Number GC010798BTEX02A <br /> Instrument ID 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 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 2 6 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 95 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEOUO N LYTICAL - ELAP #1210 <br /> Peggy Pe ner <br /> Project Manager Page 6 <br />