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+ SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 9 FAX (510) 686-9689 <br /> Viaprealian Engineering, fnc Client Project 1D Unocal, 7303 Pacific Ave , Stockton Sampled Jun 21, 1993 <br /> r--401 Stanwell Dr, Ste 400 Sample Descript Water MW- 1 Received Jun 21, 1,993 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Jun 27, 1993 <br /> Attention Mardo Kaprealian, P E Lab Number 306-0894 Reported Jul 1, 1993 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> pg/L !J9/L <br /> Bromodichloromethane 050 N D <br /> Bromoform 050 N D <br /> Bromomethane 1 0 N D <br /> Carbon <br /> yy tetrachloride also <br /> 0 50 IND <br /> i-igi%i%1%i al o - - 0.88 <br /> oroet ane 1 0 <br /> 2-Chloroethylvinyl ether 1 0 N D <br /> Chloroform 050 N D <br /> Chioromethane 1 0 N D <br /> Dlbromochloromethane 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1 r2w lc oro ene........................ ....... ................. a. 0 - - - 6,0 <br /> 1,1-Dichloroethane 050 <br /> 1,2-Dichloroethane 050 N D <br /> to-Dichloroethene 050 N D <br /> s-1,2-Dlchloroethene 050 N D <br /> trans-l,2-Dlchloroethene 050 N D <br /> 1,2-Dichloropropane 050 N D <br /> cis-1,3-Dichloropropene 050 N D <br /> trans-1,3-Dichloropropene 050 N D <br /> Methylene chloride 50 N D <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetrachloroethene 050 N D <br /> 1,1,1-Trichloroethane 050 N D <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 050 N D <br /> Vinyl chloride 1 0 N D <br /> Analytes reported as N D were not present above the stated limit of detection <br /> EQUQi%ANALY�AL <br /> A6--x <br />�Pro�ect Manager <br /> 3060894 KEI <3> <br />