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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> Waprealian Engineering, Inc Client Project ID Unocal#5421,7303 Pacific Ave,Stockton Sampled 'Nov 10, 1992 <br /> 2401 Stanwell Drive, Suite 400 Sample Descript Sod, EB6-(7) Received Nov 11, 1992 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Nov 17, 1992 <br /> Attention Mardo Kaprealian, P E Lab Number 211-0512 Reported Nov 25, 1992 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> t19/k9 N9/k9 <br /> Bromodlchloromethane 50 N D <br /> Bromoform 50 N D <br /> Bromomethane 10 N D <br /> Carbon tetrachloride 50 N D <br /> Chlorobenzene 50 N D <br /> Chloroethane 10 N D <br /> 2-Chloroethylvinyl ether 10 N D <br /> Chloroform 50 N D <br /> Chloromethane 10 N D <br /> Dibromochloromethane 50 N D <br /> 1,2-Dichlorobenzene 50 N D <br /> 1,3-Dichlorobenzene 50 N D <br /> 1,4-Dichlorobenzene 50 N D <br /> 1 1-Dichloroethane 50 N D <br /> W2-Dichloroethane 50 N D <br /> 1,1-Dichloroethene 50 N D <br /> cis-1,2-Dichloroethene 50 N D <br /> trans-l,2-Dichloroethene 50 N D <br /> 1,2-Dichloropropane 50 N D <br /> cis-1,3-DichIoropropene 50 N D <br /> trans-l,3-Dichloroprogene 50 N D <br /> Methylene chloride 50 N D <br /> 1,1,2,2-Tetrachloroethane 50 N D <br /> {,I 11f�1/ i1 4ai}♦a4.iY4ai•ia4aY.♦a•.Fa.•iai.Y.•ai4iaiaiuiyi.i.a.i. .# •.- • --.-.--- • -. <br /> 1,1,1-Trichloroetriane 50 <br /> 1,1,2-Trichloroethane 50 N D <br /> Trichloroethene so N D <br /> Trichlorofluoromethane 50 N D <br /> Vinyl chloride 10 N D <br /> Analytes reported as N D were not present above the stated limit of detection <br /> *EQU01 ANALYTICAL <br /> Cott A Chleffo <br /> Project Manager 2110502 KEI <11 <br />