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i <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(4 15) 364 9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> � Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (9 16) 921 9600 FAX (916) 921 0100 <br /> DeltaEnvironrnental Consults Client Prol ID Econ 7-3708, X093-809 Sampled -05/30/97 <br /> 3164 Gold Camp Drive, #200 Sample Descnpt MW-5 Received 06/04/97 = <br /> Rancho Cordova, CA 95670 Matra LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/09/97 = <br /> = Attention Keoni Almeida Lab Number 9706172-01 Reported_06112/97 -- <br /> QC Batch Number GC060997STEX18A <br /> Instrument ID GCHP18 <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 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 95 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> 7 <br /> Aek <br /> k6- Gregory <br /> Project Manager Page z <br />