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� - <br /> j Superior Precision Analytieai, Inc. <br /> 1555 Burke. Unit t • San Francisco.California 94 124 • (4 15)64 7.2081 (4 t 51821-7123 <br /> r <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> LABORATORY NO. : 12518-5 DATE SAMPLED: 10/31/91 <br /> CLIENT: Alton Geoscience DATE RECEIVED: 11/01/91 <br /> JOB NO. ; 310.308 DATE ANALYZED: 11/07/91 <br /> EPA SW-846 METHOD 8010 <br /> HALOGENATED VOLATILE ORGANICS <br /> SAMPLE: MW-2 <br /> Compound MDL (ug/L) RESULTS (ug/1) <br /> -- W- <br /> Chloromethane/Vinyl Chloride 1.0 ND <br /> Bromomethane/Chloroethane 1.0 ND <br /> Trichlorofluoromethane 0.5 ND <br /> 1,1-Dichloroethene 0.5 ND <br /> Methylene Chloride 0.5 ND <br /> trans-1,2-Dichloroethene 0.5 ND <br /> 1, 1-Dichloroethane 0.5 ND <br /> Chloroform 0.5 ND <br /> 1,1.,1-Trichloroethane 0.5 ND <br /> Carbon tetrachloride 0.5 ND <br /> 7.1 <br /> 1,2-Dichloroethane 0.5 <br /> Trichloroethylene 0.5 ND <br /> 0.5 ND <br /> 1,2--Dichloropropane <br /> Bromodichloromethane 0.5 ND <br /> 0.5 ND <br /> Cis-1,3-Dichloropropene <br /> trans-1,3-Dichloropropene 0.5 ND <br /> 1,1,2-Trichloroethane 0.5 ND <br /> Tetrachloroethene 0.5 ND <br /> Dibromochloromethane 0.5 ND <br /> Chlorobenzene 0.5 ND <br /> Bromoform 0.5 ND <br /> 1,1,2,2•-Tetrachloroethane 0.5 ND <br /> 1,3-Dichlorobenzene 0.5 ND <br /> 1,2-Dichlorobenzene 0.5 ND <br /> 1,4-Dichlorobenzene 0.5 ND <br /> Cis-1,2-Dichloroethene 0.5 ND <br /> 2-Chloroethyl vinyl ether 0.5 ND <br /> MDL = Method Detection Limit ) <br /> ug/l = parts per billion (ppb) <br /> QA/QC Summary: Daily Standard RPD = <15 <br /> MS/MSD average recovery = 82 % :MS/MSD RPD =< 2 $ <br /> Richard Srna, Ph.D. <br /> La ora 'ory Direc or <br /> Certified laboratories <br />