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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> ouchstone Developments Client Project ID Chevron #9-4183 Sampled Apr 26, 1996 <br /> 1 Kingston Ave Sample Descrlpt Soil, UOSP-4(A-D) Received Apr 26, 1996 <br /> Akland, CA 94611 Analysis Method EPA 8270 Extracted Apr 29, 1996 <br /> Attention Robert Mallory Lab Number 604-1872 Analyzed Apr 29, 1996 <br /> Reported Apr 30, 1996 <br /> QC Batch Number SP0429968270EXA <br /> Instrument 1D GC/MS-1 <br /> SEMI-VOLATILE ORGANICS by GC/MS (EPA 8270) <br /> Analyte Detection Limit Sample Results <br /> jig/kg N9/kg <br /> Hexachlorobenzene 1,000 N D <br /> Hexachlorobutadiene 1,000 N D <br /> Hexachlorocyclopentadiene 1,000 N D <br /> Hexachloroethane 1,000 N D <br /> Indeno(1,2,3-cd)pyrene 1,000 N D <br /> Isophorone 1,000 N D <br /> 2- et y nap t a ene 1,000 1,400 <br /> 2- et y p eno 1,000 <br /> 4-Methylphenol 1,000 N D <br /> Naphthalene 1,000 N D <br /> 2-Nitroanlline 5,000 N D <br /> 3-Nltroaniline 5,000 N D <br /> 4-Nltroaniline 5,000 N D <br /> Wtr <br /> obenzene 1,000 N D <br /> itrophenol 1,000 N D <br /> 4-Nitrophenol 5,000 N D <br /> N-Nitrosodlmethylamme 1,000 N D <br /> N-Nitrosodlphenylamine 1,000 N D <br /> N-Nitroso-di-N-propylamine 1,000 N D <br /> Pentachlorophenol 5,000 N D <br /> Phenanthrene 1,000 N D <br /> Phenol 1,000 N D <br /> Pyrene 1,000 N D <br /> 1,2,4-Trichlorobenzene 1,000 N D <br /> 2,4,5-Trichlorophenol 5,000 N D <br /> 2,4,6-Trichlorophenol 1,000 N D <br /> Surrogates Control Limit % % Recovery <br /> 2-Fluorophenol 25 121 0 0* <br /> Phenol-d6 24 113 0 0* <br /> Nitrobenzene-d5 23 120 0 60* <br /> 2-Fluorobiphenyl 30 115 1 2* <br /> 2,4,6-Trlbromophenol 19 122 0 0* <br /> 4-Terphenyl-d14 18 137 1 5* <br /> Analytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> *Surrogate recovery outside control limits due to sample dilution <br /> Kevin Van Slambrook <br /> Project Manager Page 2 of 2 <br /> 6041871 TUD <12> <br />