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680 Chesapeake Drive Redwood Ctv CA 94063 (415) 364 9600 FAX 1415) 364 9233 <br /> / \ Sequoia 404 N %%,get Lane Walnut Creel. CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95934 (916) 921 9600 FAX{9161 921 0100 <br /> ' EA Engineering Science &Tech Client Proj 1D Exxon 7-3942, 5153942 1300 Sampled 08/02/96 <br /> 3468 Mt Dtablo Blvd Ste B100 Sample Descript Trip Blank Received 08/09/96 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/16/96 <br /> ' Attention Tracy Faulkner Lab Number 9608581-01 Reported OBf22/96 <br /> QC Batch Number GCO81696BTEX02A <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 /> tTPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> ' Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 96 <br /> 3 <br /> 1 <br /> 1 <br /> I <br /> Analytes reported as N 0 were not present above the stated limit of detection . <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Kevin Follett <br /> Project Manager Page <br />