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Sequoia 680 Chesapeake Dnvc Redwood Cay C4 94063 (415) 364-%00 FAX(415) 364 9233 <br /> 404 iv Wiget Lane Walnut Geek CA 94598 (510) 938 9600 FAX(510) 988 9673 <br /> r,,7Analytical 819 Scnkcr Avenue Suite 8 Sacnmrnco CA 93834 (916) 921 9600 FAX(916) 921 0100 <br /> EA Engineering Science-&Tech - Client Prol ID _Exxon 7-3942/51539421307 Sampled 04/18/96- <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descript RW3 Received 04/19/96 » <br /> Lafayette, CA 94549 Matrix LIQUID _ <br />- Analysis Method 8015Mod/8020 Analyzed 04/24/96 _ <br /> Attention Maria Guensler Lab Number 9604E2321 _ —_ Reported05/10/96_ = <br /> C Batch Number GC042496BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br />' Analyte Detection Limit Sample Results <br /> ug/L u9/L <br />' TPPH as Gas .. 5000 ... 78000 <br /> Methyl t-Butyl Ether 250 N D <br /> Benzene •-- - - .. 50 .. .. 5100 <br /> Toluene .. 50 6700 <br />' Ethyl Benzene :: :• •. 50 ... - ... 2600 <br /> Xylenes (Total) 50 11000 <br /> Chromatogram Pattern .. Gas <br />' Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 91 <br /> I <br /> I <br /> I <br /> I <br /> Is <br /> Analytes reported as N D were not present above the stated limit of detection <br /> U NALYT11 FLAP #1210 <br /> n Fo lett <br /> Project Manager Page 2 <br /> I <br />