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i <br /> Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N W�get Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Anaiytieai 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> I <br /> � Ground ZeroAna! s1s, Inc __ T -~ - - <br /> 171Mare y Client Proj ID 96-163, Knowles Roek Sampled 03/27/98 <br /> Sample Descrlpt KR _fflu-B Received 03/27/98 <br /> Escalon, CA 95320 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 03/29/98 <br /> Attention Greg Stahl Lab Number 9803103-02 Reported 03130198 <br /> OC Batch Number GC032998BTEX02A <br /> Instrument iD GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with STEX <br /> � Analyte <br /> Detection Limit Sample Results <br /> I u9/L ug/L <br /> TPPH as Gas 10 79 <br /> Benzene <br /> Toluene 0 10 21 <br /> Ethyl Benzene 0101 0 2 <br /> s Xylenes (Total) a 10 2 2 <br /> I Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 121 <br /> r <br /> F <br /> i <br /> l <br /> r <br /> I <br /> t <br /> E <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQ7Pqnner A ICAL - EIRP #1210 <br /> I <br /> l <br /> Project Manager Page 2 <br />