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y SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> via- (510) 686-9600 • FAX (510) 686-9689 <br /> Kaprealian Engineering, fnc Client Project ID Unocal,7303 Pacific Ave,Stockton Sampled Dec 30, 1992 <br /> 401 Stanwell Drive, Suite 400 Sample Descript Water, MW 1 Relogged Jan 8, 1993 <br /> oncord, CA 94520 Analysis Method EPA 8270 Extracted Jan 11, 1993 <br /> Attention Mardo Kaprealian, P E Lab Number 301-0153 Analyzed Jan 12, 1993 <br /> Reported Jan 14, 1993 <br /> SEMI-VOLATILE ORGANICS by GC/MS (EPA 8270) <br /> Analyte Detection Limit Sample Results <br /> pg/L N9/L <br /> 2,4-Dinitrotoluene 20 N D <br /> 2,6-Dinitrotoluene 20 N D <br /> DI-N-octyl phthalate 20 N D <br /> Fluoranthene 20 N D <br /> Fluorene 20 N D <br /> Hexachlorobenzene 20 N D <br /> Hexachlorobutadiene 20 N D <br /> Hexachlorocyclopentadiene 20 N D <br /> Hexachloroethane 20 N D <br /> Indeno(1,2,3-Cd)pyrene 20 N D <br /> Isophorone 20 N D <br /> 2-Methylnaphthalene 20 N D <br /> 2-Methylphenol 20 N D <br /> 4-Methylphenol 20 N D <br /> Naphthalene 20 N D <br /> 02-Nitroaniline 10 N D <br /> 3-Nitroaniline 10 N D <br /> 4-Nitroaniline 10 N D <br /> Nitrobenzene 20 N D <br /> 2-Nnrophenol 20 N D <br /> 4-Nitrophenol 10 N D <br /> N-Nnrosodiphenylamine 20 N D <br /> N-Nnroso-di-N-propylamine 20 N D <br /> Pentachlorophenol 10 N D <br /> Phenanthrene 20 N D <br /> Phenol 20 N D <br /> Pyrene 20 N D <br /> 1,2,4-Trichlorobenzene 20 N D <br /> 2,4,5-Tnchlorophenol 10 N D <br /> 2,4,6-Trichlorophenol 20 N D <br /> Analytes reported as N 0 were not present above the stated limit of detection <br />•SEG1U IA ANALYTICAL <br /> Cott e <br /> Project Manager Page 2 of 2 3010153 KE1 <2> <br />