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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Enwras - - -- Client Prol !D Shell 6131 Pacific,Stockton <br /> ;; Sampled 07%02%97 - <br /> FEn Perkins Ave Sample Descript SB-4-36 5 Received 07/03/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 07/11/97 l; <br /> J" Analysis Method 8015Mod/8020 Analyzed 07/12/97 <br /> ' Attention Joe Neel Lab Number 9707310.10 = _ _ _ Reported p7f18f97_ ! <br /> �- 0C Batch Number-GCO711976TEXEXA <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 - - ----- - 18 <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene .... ..... .. .. 00050 . .... .... 0.0074 <br /> Toluene ..-- - 0.0050 ... ..... .. . 0 015 <br /> Ethyl Benzene .. .. 0.0050 - -- 0 011 <br /> Xylenes (Total) ... .. .. 00050 .. 0.054 <br /> Chromatogram Pattern. .. .. .. .. ... C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 78 <br /> 4-Bromofluorobenzene 60 140 108 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> � r <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> J <br /> Mike Gregory _ <br /> Project Manager Page 0 <br />