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? E 8 <br /> DEC 4 1989 <br /> FNVIROINMENTAL HEALT i <br /> GUIDELINES FOR ON-SITE DISPOSAL OF DRILLING MUDS, CUT`T`INd Tdpd'D'tVELdPMENT AND <br /> AQUIFER TEST WATERS' <br /> [the water quality objective/criterion (mg/1 )] x (attenuation factor] + 10 <br /> Water Quality Attenuation _ 10 for Disposal <br /> Constituent Objective/Criterion Factor(n=100)2 Guideline <br /> Inorganic <br /> Antimony 0.146 14.6 1.46 <br /> Arsenic 0.005 0.5 0.05 <br /> Barium 1 100 10 <br /> Beryllium 0. 1 10 1 <br /> Cadmium 0.005 0.5 0.05 <br /> Chromium 0.05 5 0.5 <br /> Cobalt 0.05 5 0.5 <br /> Copper 0.2 200 20 <br /> Lead 0.005 0.5 0.05 <br /> Mercury 0.002 0.2 0.02 <br /> Molybdenum 0.01 1 0. 1 <br /> Nickel 0.0134 1 .34 0.134 <br /> Selenium 0.01 1 0. 1 <br /> Silver 0.05 5 0.5 <br /> Thallium 0.013 1.3 0. 13 <br /> Vanadium 0. 1 10 1 <br /> Zinc 2 2000 200 <br /> Organic <br /> Chlorobenzene 0.03 3 0.3 <br /> Chloroform 0.006 0.6 0.06 <br /> Dichloromethane 0.005 0.5 0.05 <br /> Trichlorofluoromethane 0. 15 15 1.5 <br /> Trichlorofluorethane 1.2 120 12 <br /> 1, 1-Dichloroethane 0.005 0.5 0.05 <br /> 1,2-Dichloroethane 0.0005 0.05 0.005 <br /> 1, 1-Dichloroethene 0.006 0.6 0.06 <br /> 1,2-Dichloroethene(cis) 0.006 0.6 0.06 <br /> (trans) 0.01 1 0.1 <br /> 1, 1, 1-Trichloroethane 0.2 20 2 <br /> 1, 1 ,2-Trichloroethane 0.0006 0.06 0.006 <br /> Tetracholoroethylene 0.005 0.5 0.05 <br /> Trichloroethylene 0.005 0.5 0.05 <br /> 'all concentrations are in milligrams per liter <br /> 2attenuation factor of 1000 for copper and zinc <br />