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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 <br /> CA 13954 [ 1 s1(707+119, 1865 FAX(707)792-034Z <br /> I � <br /> S <br /> 40ttler-Ryan - Dublin Client Project ID Tosco 76#11193 StoC on t t Sampled Dec 11, 1998 <br /> 6747 Sierra Court, Suite J Sample Matrix Soil Zr ignH Received Dec 11, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod J8020� 7 -- Reported Dec 15, 1998 <br /> Attention Haig Kevork First Sample # 812-0955 } 1 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS V4flfi'-BTEC%TMTBE <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID ID <br /> mg/Kg 812-0955 812-0956 812-0957 812-0958 812-0959 <br /> Comp A Comp B Comp C Comp D Comp E <br /> Purgeable <br /> Hydrocarbons 10 N D N D N D N D N D <br /> Benzene 00050 N D N D N D N D N D <br /> Toluene 00050 N D N D N D N D N D <br /> Ethyl Benzene 00050 N D N D N D N D N D <br /> Dotal Xylenes 00050 N D N D N D N D N D <br /> MTBE 0 050 20 31 50 79 110 <br /> Chromatogram Pattern _ __ -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 20 20 20 100 100 <br /> Date Analyzed 12/11/98 12/11/98 12/11/98 12/11/98 12/11/98 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 120 123 136 <br /> (DC Limits = 40-140°/x) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N p were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> ' Surrogate recovery below control limit due to dilution <br /> ulianne Fegley <br /> Project Manager <br /> 8120955 GET <1> <br />