Ban on thermal Pollution Is Set for Lake Michigan
Fed Water Quality Adm announces thermal pollution policy that will forbid dumping of virtually any heated water into Lake Mich; if enforced, policy will require 7 planned power plants that will be built on lake shores to cool discharge water to within degree of lake's temp, will require indus and municipalities that now dump water into lake to either stop doing so or treat discharges; agency chief Stein says he does not know whether policy will be applied to all other waters under Fed jurisdiction; policy offered for consideration to states bordering lake, which also set antipollution regulations; Stein says if states do not adopt equal standard, Fed Govt will utilize legal action to make 1-degree level Fed standard; policy announced at meeting of Lake Mich Enforcement Conf; some skeptical of policy; Fed order to Fla Power to curb hot water discharge from plant into Biscayne Bay noted