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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)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9Z1-0100 <br /> a- ) <br /> OAnalytical 1455 McDowell Blvd North Ste ❑ Petaluma CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> _ Blaine Tech Services Client-Prof ID She!I 2575 Country Club Sampled 04/23/98 <br /> 1680 Rogers Avenue Sample Descnpt MW-4 Received 04/24/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 04/30/98 <br /> Attention Fran Thie Lab Number 98041-107-03 _ - Reported 05J1 2198 <br /> QC Batch Number G6043098BTEX09A <br /> Instrument ID GCHP9 <br /> Total Purgeable Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 100 N D <br /> Methyl t-Butyl Ether 50 400 <br /> Benzene 1 0 N D <br /> Toluene 1 0 N D <br /> Ethyl Benzene 1 0 N D <br /> Xylenes (Total) 1 0 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluarotoluene 70 130 95 <br /> Analytes reported as N n re not present above the stated limit of detection <br /> SEQUOI Na [CAL - ELAP #1271 <br /> ti <br /> Vo <br /> gy�er ner <br /> rlect Manager Page 9 <br />