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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> .'..`r' .sr.^' `w'+ainV..,w',:".11 i'�fi,`c0'vix,�C`—ew o�,�rx';-sxr.� .v'n .v Y..�,f.:� <br /> � IVest N Client Project ID #1572 6rT C:aitellus-Stockton j Sampled hep 1, 1992,- <br /> RM- <br /> 1777 Botelho Dr, Suite 260 Sample Matrix Water Received Sep 2, 11992'; <br /> Walnut Creek, CA 94596 Analysis Method EPA 5030/8015/8020 Reported Sep 16, 1992 ; <br /> Attention Bruce Pfasf First Sample# 209-0034 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I.D I D I.D. I D. I.D. I D. <br /> pg/L 209-0034 209-0035 209-0036 209-0037 209-0038 209-0039 <br /> MW-1 (1-3) MW-2 (1-3) MW-3 (1-3) MW-4 (1-0) MW-5 (1-3) MWA A(1-3) <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 54 3600 30000 <br /> Benzene 0 5 N D N D N D N D 820 9900 <br /> Toluene 0 5 N D N D N D N D 120 2200 <br /> Ethyl Benzene 05 N D N D N D N D 230 740 <br /> Total Xylenes 05 N D N D N D N D 420 4100 <br /> Chromatogram Pattern -- -- -- -- -- Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 10 10 20 100 <br /> Date Analyzed 9/8/92 9/8/92 9/8/92 9/8/92 9/8/92 9/10/92 <br /> Instrument Identification HP-2 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 103 104 106 102 103 106 <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 hmd <br /> SEQUOIA ANALYTICAL <br /> Kenneth K F Lee <br /> Laboratory Director 2090034 ERM <11> <br />