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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(5t0)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 9219600 FAX(916)921-osao <br /> ..—r—._.f...»^.^rssr__...r........»....,...--_.�........... ......» .. —— t, —». __-..._...»••msr�....=•Y srs.....».... ___ry.....0.... .=......µ.ry..x <br /> � Envlros E-r ^ Client Prol ID Shell 6131 Pacific, Stockton Sampled 09/16/97 E <br /> — 270 Perkins Ave Sample Descrlpt MW-5-51' Received 09/19/97 M <br /> Sonoma, CA 95476 Matrix SOLID Extracted 09/25/97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/26/97 <br /> Lab Number 9709C09-05 Reported 1�03f97 <br /> — Attention_J-Gaarder „---_--_-_'- » �=n,r--= - _ - - r---- ---_,__-- _ _ <br /> OC Batch Number GC092597BTEXEXB <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1 0 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifiluorotoluene 70 130 $5 <br /> i <br /> 4-Bromofluorobenzene 60 140 103 <br /> i <br /> I <br /> w <br /> Analytes reported as N D were not present above the stated limit of detection <br /> - SEQUOIA ANALYTICAL - ELAP #1210 <br /> Mik re ry <br /> Project Manager Page �5 <br />