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Sequoia 680 Chesapeake Dnve Redwood Cuy,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 /> 15) <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> c Cambria Client Proj ID Shell 2575 Country Club Blvd Sampled 12/09/97 <br /> 270 Perkins Ave Sample Descrlpt MW-12-A4 Received 12/11/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 12/19/97 <br /> Analysis Method 8015Mod/8020 Analyzed 12/22/97 <br /> Attention Joe Neely Lab Number 9712705-04 Reported 12130197 <br /> bC Batch Number GC121997BTEXEXA <br /> Instrument ID GCHP1 <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 81 <br /> Benzene 00050 0 026 <br /> Toluene .. 00050 .. 013 <br /> Ethyl Benzene .. .. 00050 0 047 <br /> Xylenes (Total) 00050 036 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 110 <br /> 4-Bromofluorobenzene 60 140 105 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> i <br /> ego <br /> Project Manager Page 5 <br />