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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 %73 <br /> T—N <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Blaine Tech Services Client Prol ID Shell Stockton/971121-G2 Sampled 11/21/97 <br /> 1680 Rogers Avenue Sample Descript Dup Received 11/24/97 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/05/97 <br /> Attention_Fran Thie Lab Number 9711 E94-07 Reported 01 J14j98 <br /> OC Batch Number GC1205976TEX21A <br /> Instrument ID GCHP21 <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 N D <br /> Methyl t-Butyl Ether .. 25 85 <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 82 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUO YTICAL - ELAP #1210 <br /> Pe y P ner <br /> Project Manager Page 21 <br /> 9D <br />