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Sequoia 680 Chesapeake Drive Redwood Qty,CA 94063 (650) 364-%00 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek C4 94598 (510) 988-96W FAX(5 10)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921. 9600 FAX(916)921-0100 <br /> Settler Ryan/Geostrategies Client Prof 1D Former Onocai 2859, 280054-85 Sampled 03/06/98 _ <br /> 6747 Sierra Court Suite J Sample Descript MW-4 Received 03/06/98 _ <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/10/98 _ <br /> Attention Deanna Harding Lab Number 9803390-05 _— _ _ _ Reported 03118198 <br />�C Batch Number GCp31098BTEX17A <br /> lstrument ID GCHP17 <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 50 92 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0.50 0 64 <br /> Toluene 050 085 <br /> Ethyl Benzene 050 1 2 <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Unidentified HC C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> TrifEuorotoluene 70 130 114 <br /> • <br />,nalytes reported as N D were not present above the stated limit of detections <br /> SEQUOIA ANA YTICAL - ELAP 41210 <br /> F0 <br />)roect Manager Page 12 <br />