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680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650) 364-9233 <br /> SeCLIOIa <br /> 404 N Wiget lane Walnut Creek CA 94598 (510)968 9600 FAX(510)988-9673 <br /> 819 51nker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792 1865 FAX(707)792-0342 <br /> 6 <br /> I - <br /> _ _ - <br /> EA Engineering Science &Tech Client Pro) ID Exxon 7-3942, 5153942 1300 Sampled 05/20/98 <br /> 3468 Mt Diablo Blvd Ste B100 Sample Descnpt UVB-MW1 Received 05/21/98 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/01/98 <br /> Attention Chnsta Marting Lab Number_ 9805E43-22 Reported 06110198 <br /> rC Batch Number GCO60198BTEX03A <br /> nstrument ID GCHP03 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 2000 16000 <br /> Methyl t-Butyl Ether 100 560 <br /> Benzene 20 2500 <br /> Toluene 20 180 <br /> Ethyl Benzene 20 950 <br /> Xylenes (Total) 20 1300 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % %' Recove Tnfluorotoluene 70 130 80 <br /> 1 <br /> 4nalytes reported as N D were not present above the stated limit of detection <br /> FEQUOIA ANALYTICAL - ELAP #1210 <br /> j*rd Heriing <br /> ect Manager Page 6 <br /> { <br />