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Se L�Ola 680 Chesapeake Dnve Redwood City CA 44063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 H Wiget Lane Walnut Creek CA 94598 (510) 988 96W FAX(5 10) 988 9673 <br /> 6 Analytical 819$taker Avenue 5wte 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> EA Engineering Science &Tech --- Client Proi lD Exxon 7-3942/51539421307--— � Sampled 04/18/96 <br /> 3468 Mt Diablo Blvd Ste 8100 Sample Descript 39421W1 NP Received 04/19/96 = <br />_ Lafayette, CA 94549 Matrix LIQUID - <br />- Analysis Method 8015Mod/8020 Analyzed 04/24/96 <br /> Attention Maria Guensfer _ Lab Number 9604E22-16Reported_O5110/96 <br /> C Balch Number G5042496BTE) 0A- <br /> Instrument ID GCHP20 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Resufts <br /> ug/L ug/L <br /> TPPH as Gas .. 500 3200 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 5 0 37 <br /> Toluene 50 N D <br /> Ethyl Benzene - -. 5 0 - 270 <br /> Xylenes (Total) 5 0 200 <br /> Chromatogram Pattern .. .. Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 97 <br /> alytes reported as N D were not present above the stated limit of detection <br /> U ANALYTICAL - ELAP #1210 <br /> WV 1 <br /> Fo lett <br /> rroject Manager Jr Page 17 <br /> 1 <br />