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� 680 Chesapeake Dnvc Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 %73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Cambria Client Prof 1D Shell 2575 Country Club Blvd Sampled 11/03/97 <br />' 270 Perkins Ave Sample Descnpt MW-12-56 Received 11/04/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 11/07/97 <br /> Analysis Method 6015Mod/8020 Analyzed 11/07/97 <br /> Attention Joe Neely Lab Number 9711136-04 Reported 11J11J97 <br /> QC Batch Number GC110797BTEXEXB - µ <br /> Instrument ID GCHP7 <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 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 /> Trifl uorotol uene 70 130 106 <br /> 4-Bromofluorobenzene 60 140 79 <br /> xi <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA AN LYTICAL - ELAP 01210 <br /> e ory <br /> Project Manager Page 4 <br />