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Superior Precisivr7 Ar7e6etica/, /f7c. <br /> 1555 Burke Unit 1 ■ .San Francisco California 94124 + f4 15) 647-2081 / fax (4 15) 82 1-7 123 <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. 56656-2 DATE RECEIVED: 06/19/93 <br /> CLIENT: WESTERN GEO-ENGINEERING DATE REPORTED: 06/23/93 <br /> DATE SAMPLED : 06/18/93 PROJECT NO. R-604 <br /> DATE ANALYZED: 06/21/93 <br /> EPA SW-846 METHOD 8240 - VOLATILE ORGANICS <br /> by Gas Chromatography/ Mass Spectrometry <br /> SAMPLE: MW-2 <br /> Compound MDL ug/L Compound MDL ug/L <br /> - <br /> Chloromethane 10 ND Cis-1113-Dichloropropene 3 ND <br /> Bromomethane 10 ND Trichloroethene 3 ND <br /> Vinyl Chloride 10 ND Dibromochloromethane 3 ND <br /> Chloroethane 10 ND 1, 1, 2--Trichloroethane 3 ND <br /> Methylene Chloride 10 ND Benzene 1 ND <br /> Acetone 10 ND Trans-1, 3-Dichloropropene 3 ND <br /> Carbon Disulfide 3 ND 2-Chloroethyl vinyl ether 3 ND <br /> Trichlorofluoromethane 3 ND Bromoform 3 ND <br /> 1, 1-Dichloroethene 3 ND 4-Methyl-2-Pentanone 10 ND <br /> 1, 1-Dichloroethane 3 ND 2-Hexanone 10 ND <br /> trans-1, 2-Dichloroethene 3 ND Tetrachloroethene 3 ND <br /> Chloroform 3 ND 1, 1,2 , 2-Tetrachloroethane 3 ND <br /> * Dichloroethane 1 ND Toluene 3 ND <br /> u-tanone 20 ND Chlorobenzene 3 ND <br /> 1, 1, 1-Trichloroethane 3 ND Ethylbenzene 3 ND <br /> Carbon Tetrachloride 3 ND Styrene 3 ND <br /> Vinyl Acetate 10 ND Total Xylenes 3 ND <br /> Bromodichloromethane 3 ND 1, 3-Dichlorobenzene 3 ND <br /> 1,2-Dichloropropane 3 ND 1, 4-Dichlorobenzene 3 ND <br /> cis-1, 2-Dichloroethene 3 ND 1, 2-Dichlorobenzene 3 ND <br /> ug/L = parts per billion (ppb) <br /> ND = ANALYTE NOT DETECTED ABOVE QUANTITATION LIMIT <br /> QC DATA: <br /> Surrogate Recoveries QC LIMITS <br /> AIR <br /> 1, 2-DCA-d4 . . . . . . . . . . . . . . 99% 76--114 <br /> Toluene--d8 . . . . . . . . . . . . . . 101% 88-110 <br /> Bromofluorobenzene. . . . . . 102% 86-115 <br /> comments: <br /> Richard Srna, Ph.D. <br /> Laboratory Director <br /> • <br /> Certified Laboratories <br />