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b80 Chesapeake Drive Redwood City CA 94063 (650}364-9G00 FAX(650)364-9233 <br /> 364-9233 <br /> 404 N Wlget Lane Walnut Creek.CA 94598 (925}988-9600 FAX(925}988-9673 <br /> Sequoia <br /> --" Analytical 819 Striker Avenue Suite 8 Sacramento CA 95$34 (916)921-9600 FAX(916)921-0100 <br /> � <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792_-0342 <br /> i <br /> Cambria _ - Client Prol ID Shell 420 West Kettjeman Lane - Sampled 03/23/99 <br /> 270 Perkins Ave Sample Descript SP-5 comp Received 03/23/99 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 03/24/99 <br /> Analysis Method EPA 8020 Analyzed 03/25/99 <br /> Attention Mike Murphy _ _ Lab Number 9903A47-10 ___ _ _ Reported 03126j99 <br /> QC Bauch Number GC0324996TEXEXA - - -�-- ---- - -- - - - - _ --- - <br /> Instrument ID GCHP18 <br /> BTEX Distinction <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl benzene 00050 N D <br /> Xylenes (Total) 00050 0.19 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 98 <br /> 4-Bromoflucrobenzene 60 140 86 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page 13 <br />