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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 /> aprealian Engineering, Inc Client Project ID Unocal#5098 5606 Pacific Ave, Stockton Sampled Mar 25, 1993 <br /> 2401 Stanwell Dr , Ste 400 Sample Descript Water, MW 13 Received Mar 26, 1993 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Apr 2, 1993 <br /> Attention Mardo Kaprealian, P E Lab Number 303-1173 Reported Apr 7, 1993 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> Ng/L pg/L <br /> Bromodichloromethane 050 N D <br /> Bromoform 050 N D <br /> Bromomethane 1 0 N D <br /> Carbon tetrachloride 050 N D <br /> Chlorobenzene 050 N D <br /> Chloroethane 10 N D <br /> 2-Chloroethylvinyl ether 10 N D <br /> Chloroform 050 N D <br /> Chloromethane 10 N D <br /> Dibromochloromethane 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1 4-Dichlorobenzene 050 N D <br /> 1,2-Dichlorobenzene 050 N D <br /> 1 1-Dichloroethane 050 ND <br /> 1 2-Dichloroethane 050 N D <br /> 1 1-Dichloroethene 050 N D <br /> cls-1,2-Dichloroethene 050 N D <br /> trans-1 2-Dichloroethene 050 N D <br /> 1,2-Dlchloropropane 050 N D <br /> cis-1,3-Dichloropropene 050 N D <br /> trans-1,3-Dichloropropene 050 N D <br /> Methylene chloride 50 N D <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetrachloroethene 050 N D <br /> 1,1,1-Trichloroethane 050 N D <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 050 N D <br /> Vinyl chloride 10 N D <br /> Analytes reported as N D were not present above the stated limit of detection <br /> MPEQUOIA ANALYTICAL <br /> 7-el� <br /> - / <br /> Scott A hie o <br /> Project Manager 3031170 KEI <5> <br />