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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(510)988-9673 <br /> ,!ZN�rlll� Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Cambna - Client Prol ID Shell 2575 Country Club Sampled 12/12/97 <br /> 270 Perkins Ave Sample Descript MW-14-A4 Received 12/19/97 ' <br />' Sonoma, CA 95476 Matrix SOLID Extracted 12/23/97 <br /> Analysis Method 8015Mod/8020 Analyzed 12/26/97 - <br /> Attention ,Joe Neely - Lab Number 9712C93-08 _ Reported 01105/98 „ <br /> OC Batch Number GC122397BTEXEXB <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 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 .. 00052 <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 110 <br /> 4-Bromofluorobenzene 60 140 73 <br /> is <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Alk <br /> Mike egory <br /> Project Manager Page 9 <br />