Carbon Monoxide (CO) Standards - Litigation from Current Review

Litigation associated with the current NAAQS review may involve schedules for the review as well as challenges to the final decisions, and court decisions in these matters.  

• US Court of Appeals, DC Circuit Court Decision Upholding the August 2011 Carbon Monoxide NAAQS (pdf) (84.68 KB)
• Court Order extending dates for proposed and final rulemaking (pdf) (29.28 KB)
• Order Establishing Schedule to Review NAAQS for Carbon Monoxide (pdf) (36.09 KB)

You may also be interested in other documents from the current carbon monoxide NAAQS review.