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SEQUOIA Bates <br /> 1900 Suite LM Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 688-9689 <br /> aprealian Engineering, Inc Client Protect ID Unocal#5098,5606 Pacific Ave, Stockton Sampled l Mar 25, 1993 <br /> 401 Stanwell Dr, Ste 400 Sample Descript Water, MW 11 Received Mar 26, 1993 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Apr 2, 1993 <br /> Attention Mardo Kapreallan, P E Lab Number 303-1171 Reported Apr 7, 1993 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> N9/L N9/L <br /> Bromodichloromethane 100 N D <br /> Bromoform 100 N D <br /> Bromomethane 200 N D <br /> Carbon tetrachloride 100 N D <br /> Chlorobenzene 100 N D <br /> Chloroethane 200 N D <br /> 2-Chloroethylvinyl ether 200 N D <br /> Chloroform 100 N D <br /> Chloromethane 200 N D <br /> Dibromochlorom ethane 100 N D <br /> 1,3-Dichlorobenzene 100 N D <br /> 1,4-Dichlorobenzene 100 N D <br /> 1,2-Dichlorobenzene 100 N D <br /> 1,1-Dlchloroethane 100 N D <br /> ,2- c oroet ane., 100 ......... . 190 <br /> 1-Dichloroethene 100 <br /> cis-1,2-Dichloroethene 100 N D <br /> trans-1,2-Dlchloroethene 100 N D <br /> 1,2-Dichloropropane 100 N D <br /> cis-1,3-Dichloropropene 100 N D <br /> trans-1,3-Dichloropropene 100 N D <br /> Methylene chloride 1,000 N D <br /> 1,1,2,2-Tetrachloroethane 100 N D <br /> Tetrachloroethene 100 N D <br /> 1,1,1-Trichloroethane 100 N D <br /> 1,1,2-Trichloroethane 100 N D <br /> Trichloroethene 100 N D <br /> Trichlorofluoromethane 100 N D <br /> Vinyl chloride 200 N D <br /> Analytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> spEQUO ANALYTICAL <br /> ott A hi a / <br /> Protect Manager 3031170 KEI <3> <br />