U.S. regulators delay smog rule for fourth time
The Environmental Protection Agency is again delaying issuing a final limit on ozone (smog) pollution until the Obama administration has finished reviewing it. The rule is going through interagency review at the White House Office of Management and Budget and EPA will not issue the rule on Friday as it had intended. EPA did not say when it expects to announce the standard.
The initial standards, proposed near the start of last year, would limit ground-level ozone, or smog, to between 60 and 70 parts per billion measured over eight hours. The proposal was stronger than 2008 standards set by the Bush administration. Environmentalists blasted those for being less than what government scientists recommended.
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