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Sequoia 680 Chesapeake Drive Redwood Ctty,CA 94063 (415) 364 9600 FAX (415) 364-9233 <br /> 404N Wiget Lane Walnut Creek,C4 94598 (510) 988 9600 FAX(510) 988-9673 <br /> - Analytical St9 Stnker Avenue,Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> Enviros _ Client Prol ID Shell 2575 Country Club, STK Sampled 01/28/97 <br /> 270 Perkins Ave Sample Descnpt SS-2A Received 01/29/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 02/03/97 _ <br /> Analysis Method 8015Mod/8020 Analyzed 02/03/97 <br /> Attention Joe Neely Lab Number 9701G31-01 Reported 02JO5197 <br /> QC Batch Number GCO20397BTEXEXA <br /> Instrument ID GCHP07 <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 /> Trlfluorotoluene 70 130 93 <br /> i <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> � I <br /> I <br /> OGr ory` <br /> ct Manager Page 2 <br />