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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> (D— 404 N WEget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> %70 Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br />!' Blaine Tech Services Client Proj ID Shell Stockton/970709-F1 Sampled 07/09/97- <br /> 1680 <br /> 7/09/971680 Rogers Avenue Sample Descript MW-1 Received 07/10/97 , <br /> San Jose, CA 95112 Matrix LIQUID <br /> ' Analysis Method 8015Mod/8020 Analyzed 07/16/97 <br /> Attention Fran The Lab Number 9707592-03 _ _ Reported 07f23197 <br /> OC Batch Number GC071697BTEX21A <br /> Instrument ID GCHP21 <br /> Kota[ 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-Butyi Ether 2.5 .. ... .. 11 <br /> Benzene 0 50 N D <br /> Toluene 0 50 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 /> Trlfluorotoluene 70 130 106 <br /> • <br /> Analytes reported s D were not present above the stated limit of detection <br /> SE O A ALVTICAL - ELAP #1210 <br /> yPenner <br /> Project Manager Page 3 <br />