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680 Chesapeake Dnve Redwood City, CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> Sequoia 404 h1 Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue,Suite 9 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> -Cambria _ Client Prol -ID -Shell-2575 Country Club Blvd - Sampled 11/03/97 <br /> 270 Perkins Ave Sample Descrlpt MW-12-65 Received 11/04/97 , <br />- Sonoma, CA 95476 Matrix SOLID Extracted 11/07/97 <br />- Analysis Method 8015Mod/8020 Analyzed 11/07/97 <br />- Attention ,Joe Neely Lab Number 9711136-01 Reported 11111197 <br /> OC Batch Number GC110797BTEXEXB <br /> Instrument ID GCHP18 <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 - -. - 2.1 <br /> Methyl t-Butyl Ether .. ... 0 025 .. 0 055 <br /> Benzene .... 00050 .. .. 0 040 <br /> Toluene .. .... 00050 .. ... 0 028 <br /> Ethyl Benzene 00050 ... .. .. 0 017 <br /> Xylenes (Total) .. 00050 ... 013 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 95 <br /> 4-B romofl u oro benzene 60 140 77 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br />.'. 44�-� <br />%WGrregory <br /> Project Manager Page 1 <br />