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I <br /> Sequoia 660 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)998 9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)92t 0100 <br /> Analytical ` <br /> d <br /> Enviros " - - "- -- ~- " µ Client Proj� ID Shell 6131 Pacific, Stocktonµ " - Sampled" 07/02/97 <br /> =n 270 Perkins Ave Sample Descript SP-13 Received 07/03/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 07/09/97 <br /> ^' Analysis Method -8015Mod/8020-- -- --Analyzed 07/09/97---' <br /> " Attention-Joe Neely " ,_ _ _ Lab Number_9707162.02 __ __ _ ___ _ _ _ __ __ Reported_ 07J1?197 <br /> QC Batch N6mber-GC070897BTEXEXB " <br /> Instrument ID GCHP07 -_ <br /> -- ��Total Pur eeable Petroleum Hydrocarbons-(TPPH) with-BTEX �- <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas .... 10 ... .. .... 39 <br /> Benzene 00050 N D _ <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) .. .. ... ... 0.0050 .. ... .. .. 0 033 <br /> Chromatogram Pattern: .... .. .. ... . . ... .... .. C9-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 89 <br /> 4-Bromofiuorobenzene 60 140 96 <br /> • <br /> w <br /> Analytes reported as N D were not present above the stated limit of detection <br /> - SEQUOIA ANALYTICAL - ELAP #1210 <br /> Y� �_ <br /> M e Gregory <br /> Project Manager Page 3 <br />