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Sequoia a80 Chesapeake Dnve Redwood City, CA 94061 (650) 364-%00 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> frlll� Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 Oleo <br /> Gettler Ryan/Geostrategies Client Prol ID Unocal SS#0187, 280045 85 - Sampled 03/09/98 <br /> 6747 Sierra Court Suite J Sample Descript U-3 Received 03/09/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/10/98 <br /> Attention Deanna Harding Lab Number 9803523-04 Reported 03118198 <br /> QC Batch Number GC0310986TEX03A <br /> Instrument ID GCHP3 <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 5000 28000 <br /> Methyl t-Butyl Ether 250 N D <br /> Benzene _ 50 1300 <br /> Toluene 50 600 <br /> Ethyl Benzene 50 1200 <br /> Xylenes (Total) 50 4500 <br /> Chromatogram Pattern - Gas <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 105 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEOUoeLYTICAL - ELAP #1210 <br /> Project Manager Page 10 <br />