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Sequoia 680 Chesapeake Drive Redwood City,CA 9404 (415) 364 9600 FAX(415) 364 9233 <br /> (D— <br /> 404 N W3get Lane Walnut Creek,CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Anaiytiea 819 Straker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> i <br /> Enviros Client Prol ID Shell 2575 Country Club, STCK Sampled 01/02/97 <br /> 270 Perkins Ave Sample Descript SS-C Received 01/03/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 01/06/97 <br /> Analysis Method 8015Mod/8020 Analyzed 01/06/97 _ <br />"Attention Joe Neely » Lab Number_ 9701065-03 _ » » Reported 01 JI5197 <br /> QC Batch Number 6C010697BTEXEXA <br /> Instrument ID GCHP22 <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 /> Trifluorotoluene 70 130 82 <br />• <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Gregory <br /> ct Manager Page 4 <br />