EPA Proposes Tougher Smog Standard Business Decries as Costliest

Nov. 26 (Bloomberg) -- The U.S. Environmental Protection Agency proposed tighter limits on emissions of smog-producing ozone, rules designed to reduce asthma and heart disease that critics said they may be among the costliest ever issued by the agency.

The EPA published a proposal today for ground-level ozone, offering to tighten the levels to 65-70 parts per billion, from the current 75 parts per billion for an eight-hour period.