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APR - 2s - .91 PRI 4 6 P 0 7 <br /> r.. 1 <br /> Precision Analytical Laboratory, Inc, <br /> 4136 LAKESIDE DRIVE,RICHMOND,CA 9406 PHONE 415 222-3002 FAX 415)222.1251 <br /> CERTIFICATE OF ANALYSIS <br /> STATE LICENSE NO. 211 <br /> Received: 03/12/91 <br /> Reported: 03/15/91 <br /> Attn: Tom Edwards Job #: 72328 <br /> TMC Environmental <br /> 13908 San Pablo Ave. , Suite 101 <br /> San Pablo, CA. 94806 <br /> Project: Earthbrain/Roto Rooter <br /> Matrix: Water <br /> EPA METHOD 8240 <br /> PURGEABLE ORGANICS <br /> ug/L <br /> Lab ID: 72328-Method Blank <br /> T nt ID• Method Blank <br /> Concentration Limit of Detection <br /> compound ugll b uc/l (ppb) <br /> Chloromathane ND<8 8 <br /> Bromomethane ND<7 7 <br /> Vinyl chloride ND<9 9 <br /> Chloroethane ND<7 7 <br /> Methylene chloride ND<10 10 <br /> Trichlorofluoromethane ND<6 6 <br /> 1, 1-dichloroethene ND<4 4 <br /> 1,1-dichloroethene ND<5 5 <br /> Trans-1,2 dichloroethene ND<4 4 <br /> Chloroform ND<4 4 <br /> 1,2 dichloroethane ND<3 3 <br /> l,i, l-trichloroethane ND<3 3 <br /> Carbon tetrachloride ND<4 4 <br /> Bromodichloromethane ND<4 4 <br /> 112-dichloropropane ND<3 3 <br /> Cis-113-dichlorpropene ND<3 3 <br /> Trichloroethene ND<3 3 <br /> Benzene ND<2 2 <br /> Dibromochloromethane ND<2 2 <br /> 1,1, 2-trichloroethane ND<4 4 <br /> Trans 1, 3-dichloropropene ND<3 3 <br /> 2-chloroethyl vinyl ether ND<5 5 <br /> Bromoform ND<3 3 <br /> 1,1,2,2-tetrachloroethane ND<5 5 <br /> Tetrachlorcethene ND<2 2 <br /> Toluene ND<2 2 <br /> Chlorobanzene ND<2 2 <br /> OUTSTANDING QUALITY AND SERVICE <br /> CALIFORNIA STATE CERTIFIED LABORATORY <br />