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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> ..� 404 N "'c"Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 8 t9 Striker Avenue Suite a Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> i <br />' EA Engineering Science &Tech Client Prof ID Exxon 7-3942 / 8373942 7307 Sampled 02/13/96 <br /> 3468 Mt Diablo Blvd Ste 6100 Sample Descrtpt RW4 Received 02/14/96 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysts Method 8015Mod/8020 Analyzed 02/16/96 <br /> Attention Tracy Faulkner _ Lab Number 9602A05-10 Reported 02f2319fi_ - <br />'OC Batch Number GCO21696BTEX20A <br /> Instrument ID GCHP20 ry <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br />' TPPH as Gas 20000 78000 <br /> Benzene 200 2200 <br /> Toluene 200 13000 <br /> Ethyl Benzene .. 200 .. 2200 <br /> Xylenes (Total) 200 9700 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br />' Trdluorotoluene 70 130 94 <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br />'SEQUOIA ANALYTICAL - ELAP 01210 <br /> VinollettManager Page 10 <br />