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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 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br />_ Envlros Client Prod ID Shell 2575 Country Club, STK Sampled 01/28/97 <br /> 270 Perkins Ave Sample Descript RW-B1-36 5 Received 01/29/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 01/31/97 <br /> Analysis Method 8015Mod/8020 Analyzed 02/03/97 <br /> Attention Joe Neely Lab Number 9701G29-05 Reported 02/04/97 <br /> QC Batch Number GCO131973TEXEXA <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1 0 N D <br /> Methyl t-Butyl Ether - - 0 025 - 44 <br /> Benzene 00050 ❑ 017 <br /> Toluene 00050 0 034 <br /> Ethyl Benzene 00050 00058 <br /> Xylenes (Total) 00050 0 029 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 92 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> re ory <br /> pr Iect Manager Page 5 <br />