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.0Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX (415) 364 9233 <br /> ' I , 404 N Wtget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX (510)988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br />~' Enviros Client Prof ID Shell 620 W Charter,Stockton Sampled 11/07/96 <br /> 270 Perkins Ave Sample Descript Effluent Air Received 11/08/96 <br /> Sonoma, CA 95476 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 11/10/96 <br /> Attention Matt Donohue Lab Number 9611429-01 Reported 11 f 12196 <br /> OC Batch Number GC111096STEX02A <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ppmv ppm <br /> TPPH as Gas 28 ND <br /> Benzene 0 031 N D <br /> Toluene 0 027 N D <br /> Ethyl Benzene 0 023 N D <br /> Xylenes (Total) 0 023 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 88 <br /> I <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> TTbjZg <br /> rayg <br /> er Page t <br />