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' Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> 6) 404 N Wiget Lane Walnut Creek,CA 94596 (9Z5)988-9600 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 Prat ID KOK Realty 62581 0001 Sampled 12/10/98 <br /> 1117 Lone Palm Avenue Sample Descript MW-2 Received 12/10/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/18/98 <br /> Attention Tom Lutterman Lab Number 9812819-02 Reported 12f22198 <br /> QC Batch Number GC1 21898BTEX1 7A <br /> Instrument ID GCHP17 <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 1000 1100 <br /> Methyl t-Butyl Ether 50 gg <br /> Benzene 10 160 <br /> Toluene 10 N D <br /> Ethyl Benzene 10 21 <br /> Xylenes (Total) 10 N D <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 85 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> r <br /> Protect Manager ` Page 4 <br />