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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 1510) 686 9600 FAX(5 10)686 9689 <br /> 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Analytical <br /> RESNA Client Project ID OW0309 01, Gardner Property Sampled Jun 24, 1994 <br /> 1710 Main Street Sample Matrix Water Received Jun 27, 1994 <br /> Escalon, CA 95320 Analysis Method EPA 5030/8015 Mod /8020 Reported Jul 8, 1994 <br /> Attention Tom Lutterman First Sample # 4FF9701 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I D I D <br /> erg/L 4FF9701 4FF9702 4FF9703 <br /> GP MW2 GP MW3 GP MW4 <br /> Purgeable <br /> Hydrocarbons 50 140 8,400 16,000 <br /> Benzene 0 50 N D N D N D <br /> Toluene 050 069 N D N D <br /> IS Ethyl Benzene 050 N D 290 780 <br /> Total Xylenes 050 21 190 1,200 <br /> Chromatogram Pattern Weathered Weathered Weathered <br /> gas gas gas <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 40 100 <br /> Date Analyzed 6/29/94 6/29/94 6/29/94 <br /> Instrument Identification GCHP-6 GCHP-6 GCHP-6 <br /> Surrogate Recovery, % 96 87 100 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> .SEQUOIA ANALYTICAL <br /> Mit <br /> Vickie Tague Clark <br /> Project Manager 4FF9701 WAT <br />