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' ( . Sequoia680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9133 <br /> 404 N W (51 <br /> get Lane Walnut Creek CA 94598 0) 988 9600 FAX(510)988 9673 <br /> JRN6Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> EA Engineering Science &Tech Client Prof ID Exxon 7-3942 /8373942 1307 Sampled 02/13/96 <br /> 3468 Mt Diablo Blvd Ste 6100 Sample Descript MW10 Received 02/14/96 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/16/96 <br /> Attention Tracy Faulkner Lab Number 9602A05-13 _ Reported 02f23/96 <br /> QC Batch Number GCO216968TEX21 A µ <br /> Instrument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br />' TPPH as Gas 20000 64000 <br /> Benzene 200 1600 <br /> Toluene 200 15000 <br /> Ethyl Benzene 200 .. 1400 <br />' Xylenes (Total) 200 6500 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits% % Recovery <br />' Trifluorotoluene 70 130 92 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> X <br /> tt <br /> rofect Manager Page 13 <br />