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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 /> W-1prealian Erigineenng; Inc Client project Ib Unocal#509s,5606 i'ac,fic Ave,`stocicton ` Sampfed `May 20,`1992 <br /> 2401 Stanwell Drive, Suite 400 Sample Descnpt Soil, MWi i - (60) Received May 22, 1992 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Jun 3, 1992 <br /> Attention Mardo Kaprealian, P E Lab Number 205-1175 Reported Jun 9, 1992 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> Ng/kg Ng/kg <br /> Bromodichloromethane 50 N D <br /> Bromoform 50 N D <br /> Bromomethane 50 N D <br /> Carbon tetrachloride 50 N D <br /> Chlorobenzene 50 N D <br /> Chloroethane 50 N D <br /> 2-Chloroethylvinyl ether 50 N D <br /> Chloroform 50 N D <br /> Chloromethane 50 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-Dichloroethane 50 N D <br /> Ic oe ane.. ........« <br /> 1,1- Ic oroet ene 50 to <br /> N D <br /> cis-1,2-Dichloroethene 50 N D <br /> trans-1,2-Dichloroethene 50 N D <br /> 1,2-Dlchloropropane 50 N D <br /> cis-1,3-Dichloropropene 50 N D <br /> trans-1,3-Dichloropropene 50 N D <br /> Methylene chloride 50 N D <br /> 1,1,2,2-Tetrachloroethane 50 N D <br /> Tetrachloroethene 50 N D <br /> 1,1,1-Trichloroethane 50 N D <br /> 1,1,2-Trichloroethane 50 N D <br /> Trichloroethene 50 N D <br /> Trichlorofluoromethane 50 N D <br /> Vinyl chloride 50 N D <br /> Analytes reported as N D were not present above the stated limit of detection <br /> QEQUOIA ANALYTICAL <br /> Scott A C iefio <br /> 2051170 KEI <8> <br /> Project Manager <br />