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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-(4) Received Nov 11, 1992 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Nov 16, 1992 <br /> Attention Mardo Kaprealian, P E Lab Number 211-0511 Reported Nov 25, 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 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 /> ,2-Dichloroethane 50 N D <br /> 1,1-Dichloroethene 50 N D <br /> cis-1,2-Dichloroethene 50 N D <br /> trans-1,2-Dichloroethene 50 N D <br /> 1,2-Dichloropropane 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 IN}} D <br /> .............. ... ..i..........a.ai.r....... o ......... . . wJ iJ................... U1' <br /> 1,11,1-Trichloroethgne 50 <br /> 1,1,2-Trichloroethane 50 N D <br /> Trichloroethene 50 N D <br /> Trichlorofluoromethane 50 N D <br /> Vinyl chloride 10 N D <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> EDU A ANALYTICAL <br /> Scott A teff <br /> Project Manager 2110502 KE] <10> <br />