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j SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> Kaprealian Engineering, Inc Client Project ID Unocal, 7303 Pacific Ave , Stockton Sampled Jun 21, 1993 <br /> 401 Stanwell Dr, Ste 400 Sample Descript Water MW - 1 Received Jun 21, 1993 <br /> oncord, CA 94520 Analysis Method EPA 8270 Extracted Jun 22, 1993 <br /> Attention Mardo Kaprealian, P E Lab Number 306-0894 Analyzed Jun 23, 1993 <br /> Reported Jul 1, 1993 <br /> SEMI-VOLATILE ORGANICS by GC/MS (EPA 8270) <br /> Analyte Detection Limit Sample Results <br /> N9/L y9/L <br /> 2,4-Dinitrotoluene 20 N D <br /> 2,6-Dinarotoluene 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 /> 1ndeno(1,2,3-cd)pyrene 20 N D <br /> Isophorone 2 0 N D <br /> 2-Methylnaphthalene 2 0 N D <br /> 2-Methylphenol 2 0 N D <br /> 4-Methylphenol 2 0 N D <br /> Naphthalene 2 0 N D <br /> ONaroani ine 10 N D <br /> Nitroaniline 10 N D <br /> 4-Nrtroaniline 10 N D <br /> Nitrobenzene 2 0 N D <br /> 2-Nitrophenol 2 0 N D <br /> 4-Nitrophenol 10 N D <br /> N-Nitrosodiphenylamine 2 0 N D <br /> N-Naroso-di-N-propylamine 2 0 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-Tnchlorobenzene 20 N D <br /> 2,4,5-Tnchlorophenol 10 N D <br /> 2,4,6-Trichlorophenol 2 0 N D <br /> Analytes reported as N D were not present above the stated limit of detection <br /> QUOTA ANALYTICAJI <br /> Alan B _Kemp <br /> P ct Manager Page 2 of 2 <br /> 3060894KE] a5> <br />