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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 /> prealiari Etigineeririg,`Inc- Client project10 Unocal#soca,seos Pacific Ave,Stockton Sam' `VlV1ay 20,'X992 <br /> 2401 Stanwell Drive, Suite 400 Sample Descript Sod, MW10 - (60) Received May 22, 1992 . <br /> Concord, CA 94520 Analysis Method ERA 5030/8010 Analyzed Jun 3, 1992 <br /> Attention Mardo Kaprealian, P E Lab Number 205-1171 Reported Jun 9, 1992 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> I19/k9 N9/k9 <br /> Bromodichloromethane 50 N D <br /> Bromoform 50 N D <br /> Bromomethane 50 N D <br /> Carbon tetrachloride 50 N D <br /> Chlorobenzene 50 N D <br /> Chloroethane 50 N D <br /> 2-Chloroethylvinyl ether so N D <br /> Chloroform 50 N D <br /> Chloromethane 50 N D <br /> Dibromochloromethane 50 N D <br /> 1,2-Dichlorobenzene so N D <br /> 1,3-Dichlorobenzene so N D <br /> 1,4-Dichlorobenzene 50 N D <br /> 1-Dichloroethane 50 N D <br /> ,2-Dichloroethane so N D <br /> 1,1-Dichicroethene 50 N D <br /> cis-1,2-Dichloroethene 50 N D <br /> trans-1,2-Dichloroethene 50 N D <br /> 1,2-Dichloropropane 50 N D <br /> cis-1,3-Dichloropropene 50 N D <br /> trans-l,3-Dichioropropene 50 N D <br /> Methylene chloride 50 N D <br /> 1,1,2,2-Tetrachloroethane 50 N D <br /> Tetrachloroethene 50 N D <br /> 1,1,1-Trichloroethane 50 N D <br /> 1,1,2 Trichloroethane 50 N D <br /> Trichloroethene 50 N D <br /> Trichlorofluoromethane 50 N D <br /> Vinyl chloride so N D <br /> Analytes reported as N D were not present above the stated limit of detection <br /> QEQUOIA ANALYTICAL <br /> Cojectott Chle Manager O 2051170 KEl �a> <br /> Pr <br />