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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (4 15) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510) 988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Analytical <br /> leouchstone Developments Client Project 1D Chevron #9-4183 Sampled Apr 26, 1996 <br /> 781 Kingston Ave Sample Matrix Soil Received Apr 26, 1996 <br /> Oakland, CA 94611 Analysis Method EPA 5030/8015 Mod /8020 Reported May 6, 1996 <br /> Attention Robert Mallory First Sample # 604-1944 <br /> OC Batch Number SP050196 SP050196 SP050196 SP050196 SP050196 <br /> B !TOTAL PURGEABLE PETROLEUM HYDROCAREXA BONwithBTX DIEXA STINCTION <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D I D <br /> mg/kg 604-1944 604-1945 604-1946 604-1947 604-1948 <br /> WOX-2-16 0 WOX 3-16 5 WOX-4-16 5 WOX-5-16 5 WOX-B-21 0 <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 />*Total Xylenes 00050 N D N D 0 014 N D <br /> 0 013 <br /> Chromatogram Pattern <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 10 1 0 10 <br /> Date Analyzed 5/1/96 5/1/96 5/1/96 5/1/96 5/1/96 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 105 105 104 104 103 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #1271 <br /> Kevin Van Slam rook <br /> Project Manager <br /> 6041944 TLJD <1> <br />