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Sequoia 680 Chesapeake Drive Redwood Cary CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> (IN 404 N Wiget lane Walnut Creek CA 94598 (510) 988 %00 FAX(510)988 %73 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0 100 <br /> Cambria- - - Client Prol ID Shell 2575 Country Club Sampled 12/12/97 <br />µ 270 Perkins Ave Sample Descript MW-14-A3 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 9712C93-07 Reported 01 f05j98 <br /> QC 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 ... 00051 <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 95 <br /> 4-Bromofluorobenzene 60 140 74 <br /> 49 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Aak Ae� <br /> Mike r gory <br /> Project Manager Page 8 <br />