The Environmental Protection Agency on Thursday announced a sweeping federal air-pollution limit on ground-level ozone, one of several environmental regulations fueling a clash between the Obama administration and the business community. The EPA is setting a final standard of 70 parts per billion of ozone in the air, down from the current level of 75 parts per billion, EPA Administrator Gina McCarthy said Thursday. The ozone limit is prompting criticism both from environmental groups that say it isn’t strong enough and business executives who didn’t want the EPA to change the standard at all. Some company and state officials have said they could support a standard of 70 but nothing lower, indicating the EPA is seeking to find some middle ground on the hotly divisive issue. “We know that this regulation could have been worse, but it still feels like a punch in the gut,” said Tom Riordan, CEO […]