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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)354-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94595 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite a Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North.Ste D Petalurna,CJI 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> -- _ -- --- -- - -- — - - <br /> z. <br /> 4- Sequoia Analytical --Sac " Client Pray ID - S904159/Chevron #9-46-2--S 8 - Sampled - <br /> 819 Straker Ave , Suite 8 Sample Descript Method Blank Received 04/14/99 _ <br /> " Sacramento, CA 95834 Matrix SOLID Extracted 04/19/99 <br /> - Analysis Method EPA 8015 Mod Analyzed 04/19/99 <br /> - Attention Sandra Hanson Lab Number 9904624-10 Reported 04J2i/99 <br /> QC Batch Number GC0419991SHSHSD <br /> Instrument ID GCV-01 <br /> Industrial Solvents <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> Methanol 10 N D <br /> Surrogates Control Limits% % Recovery <br /> Pentanol RTX 200 31 166 65 <br /> Pentanol DBWAX 49 166 58 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 0ject Manager <br /> Page 10 <br /> t� <br />