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EPA Proposes More Stringent Ozone Standard of 65-70 Parts Per Billion

Posted By Chris Greissing, Tuesday, December 02, 2014

EPA Proposes More Stringent Ozone Standard of 65-70 Parts Per Billion

Last Wednesday, the Environmental Protection Agency (EPA) announced a proposal for a more stringent ozone standard between 65 – 70 parts per billion (ppb) via the EPA's authority under the Clean Air Act. The EPA will also accept comments on maintaining the 75 ppb standard, which was established by the Bush Administration in 2008, as well as a lowering of the standard even further to 60 ppb, which is favored by environmental groups.

A court ordered EPA to propose a rule by December 1, 2014.  Comments will be accepted for 90 days following the rule’s publication in the Federal Register.  The court ordered deadline to finalize the standard is October 1, 2015.  

This represents the second time that EPA has proposed a more stringent standard for ground-level ozone during the Obama Presidency.  The original nationwide health-based national ambient air quality standard was shelved by the Administration prior to the 2012 election due to the excessive cost of the proposal.  The low-end estimates for the proposal then were $90 billion to come into compliance.   EPA’s own estimates indicate that this proposal would cost $3.9 billion annually to comply with the 70 ppb and $15 billion for a 65 ppb standard.  

IMA staff is continuing to review the proposal.  We welcome any feedback you might have on the impacts this proposal may have on your operations.

To view the proposal, click here.

To view the 7 page fact sheet of the proposal, click here.

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