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` SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> 10aprealian Engineering, Inc Client Project ID Unocal#5098, 5606 Pacific Ave, Stockton Sampled Mar 25, 1993 <br /> ,401 Stanwell Dr, Ste 400 Sample Descript Water, MW 10 Received Mar 26, 1993 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Apr 2, 1993 <br /> Attention Mardo Kapreahan, P E Lab Number 303-1170 Reported Apr 7, 1993 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> !J9/L lug/L <br /> Bromodlchloromethane 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 1 0 N D <br /> 2-Chloroethylvinyl ether 1 0 N D <br /> Chloroform 050 N D <br /> Chloromethane 1 0 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-Dlchloroethane 050 N D <br /> 2- is oroet arse , ...... .. .. . . 0.50 ..................................... 2.2 <br /> 1- is oroet ene "690 <br /> cis-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 1 0 N D <br /> Analytes reported as N D were not present above the stated limit of detection <br />�ECUOI AN <br /> Sc tt C leffo <br /> Project Manager 3031170 KEi <2> <br />