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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 /> wprealian Engineering, Inc Client Project ID Unocal#5421,7303 Pacific Ave ,Stockton Sampled Nov 10, 1992 <br /> 2401 Stanwell Drive, Suite 400 Sample Descript Soil, EB7-(25) Received Nov 11, 1992 <br /> Concord, CA 94520 Analysts Method EPA 8240 Analyzed Nov 17, 1992 <br /> Attention Mardo Kaprealian, P E Lab Number 211-0516 Reported Nov 25, 1992 <br /> VOLATILE ORGANICS by GC/MS (EPA 8240) <br /> Analyte Detection Limit Sample Results <br /> p9/k9 N9/k9 <br /> Acetone 500 N D <br /> Benzene 100 N D <br /> 3 rom odichloro methane 100 N D <br /> Bromoform 100 N D <br /> Bromomethane 100 N D <br /> 2-Butanone 500 N D <br /> Carbon disulfide 100 N D <br /> Carbon tetrachloride 100 N D <br /> Chlorobenzene 100 N D <br /> Chloroethane 100 N D <br /> 2-Chloroethyl vinyl ether 500 N D <br /> Chloroform 100 N D <br /> Chloromethane 100 N D <br /> ibromochloromethane 100 N D <br /> ,1-Dichloroethane 100 N D <br /> 1,2-Dichloroethane 100 N D <br /> 1,1-Dichloroethene 100 N D <br /> cis-1,2-Dichloroethene 100 N D <br /> trans-1,2-Dichloroethene 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 /> Ethylbenzene 100 N D <br /> 2-Hexanone 500 N D <br /> Methylene chloride 250 N D <br /> 4-Methyl-2-pentanone 500 N D <br /> Styrene 100 N D <br /> 1,1,2,2-Tetrachloroethane 100 N D <br /> Tetrachloroethene 100 N D <br /> Toluene 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 acetate 100 N D <br /> Vinyl chloride 100 N D <br /> Total Xylenes 100 N D <br /> Analytes reported as N 0 were not present above the stated limit of detection <br />&EQ1.11001A ANALYTICA <br /> ott A Chieffo <br /> Project Manager 2110502KE1 <13> <br />