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■1 <br /> 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-%00 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc -" " Client Prol" ID W Prapertles/K1R, 62514 0001 Sampled 09/25/98 <br /> 01 1260 Graphics Drive Sample Descrlpt MW-3 Received 09/28/98 - <br /> 3. Modesto, CA 95351-1502 Matrix LIQUID = <br /> Analysis Method 8015Mod/8020 Analyzed 10/01/98 <br /> Jeanne Homsey " _Lab Number 98091-147-03 _ _ _ Reported 1 0108J9 <br /> QC Batch Number"GC100198BTEX30A µ"- <br /> Instrument ID GCHP30 <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 90 <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 91 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> r � <br /> Project Ma er Page 6 <br />