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Sequoia 680 Chesapeake Drive Redwood City, CA 44063 (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 /> „ EA Engineering Science &Tech Client Proj ID -6 XOn-7-3942, 5153942 1300 Y Sampled 11/04/96— <br /> ;= 3468 Mt Diablo Blvd Ste B100 Sample Descript MW12 Received 11/05/96 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/07/96 -; <br /> Attention Tracy Faulkner _- Lab Number 9611209-05 Reported_i1f12j96 <br /> _ ___ - <br /> QC Batch Number G'-C-- <br /> Instrument ID GCHP03 11796= 8TEX03A <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit <br /> 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 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 87 <br /> 1 <br /> I <br />' Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> s <br /> vin Follett <br /> Protect Manager Page 5 <br />