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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 Stinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> Pacific Environmental Group _-- - -Client Pro) ID µ 310-040 5A/2859,Stockton -- _ Sampled 04/09/96 <br /> 2025 Gateway Place, Suite 440 Sample Descnpt Infl Received 04/10/96 <br /> San Jose, CA 95110 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 04/11/96 _ <br /> Ki <br /> Attention Andrew Lehane - Lab Number 9604721-01 _ Reported 04117196 <br /> QC Batch Number GC041196BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 1000 2500 <br /> Benzene 10 N D <br /> Toluene 10 61 <br /> Ethyl Benzene 10 29 <br /> Xylenes (Total) 10 170 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br /> Tri luorotoluene 70 130 101 <br /> 4 <br /> , 44 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - EL4P 01210 <br /> audia Hirotsu / <br /> Project Manager Page t <br /> _ oc <br />