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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 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> i <br /> ATC Associates, Inc Client Westre <br /> PS <br /> roj ID c Prop'/Kir 62514 0d01 Sampled „ <br /> 1260 Graphics Drive Sample Descript Method Blank 1 Received 06/25/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID „ <br /> Analysis Method EPA 8260 Analyzed 06/29/98 <br /> Attention Jeanne Homsex „Lab Number 9806G74-07 _ Reported 07116198 <br /> QC Batch Number MS062998MTBEH6A <br /> Instrument ID H6 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether(DIPS) 20 N D <br /> Ethyl t-Butyl Ether(ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 100 <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> Analytes reported as N D were not present above the stated Ilmit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> i <br /> Project Manager Page 17 <br />