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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 /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> �I� <br /> r <br /> 3iaina Tech Sen+ICei Client Proj-ID --Shell Stockton/970708-F1 - Sampled 07/08/97 <br /> 1680 Rogers Avenue Sample Descnpt DUP Received 07/10/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015MOd/8020 Analyzed 07/18/97 <br /> Attention Fran Thie - - Lab Number 9707594-10 = -_ Reported 07f23197 ; <br /> C Batch Number-GC071897BTEX03A <br /> strument ID GCHP03 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> rPPH as Gas 200000 N D <br /> Methyl t-Butyl Ether .. 10000 .. 840000 <br /> Benzene 2000 .. 17000 <br /> Toluene .. .. 2000 .. ... .. 16000 <br /> Ethyl Benzene 2000 N D <br /> Xylenes (Total) 2000 10000 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 109 <br /> nalytes reported as N D were not present above the stated limit of detection <br />;EQUOIA ANAL AL - ELAP #1210 <br /> leggy Pe <br />'roject Manager Page 10 <br />