Tag Archives: “State Implementation Plan”

Should Courts Defer to EPA’s Scientific Expertise if EPA Gets Rid of Its Expertise?

Earlier this week, the 9th Circuit Court of Appeals rejected challenges to the Federal Implementation Plan EPA promulgated after finding that Arizona’s regional haze State Implementation Plan was inadequate.  I think that the result is both correct and unsurprising.

However, one part of the opinion – a recitation of black-letter law – caught my eye.  In discussing the standard of review, the court noted that the arbitrary and capricious standard is “highly deferential.”  No surprise there. … More

In Cooperative Federalism, Who Gets Deference, EPA or the States? Can you say “Federal Supremacy”?

Earlier this week, the 9th Circuit denied Arizona’s challenge to EPA’s decision to reject Arizona’s SIP addressing regional haze grand canyonrequirements and instead promulgate its own federal implementation plan.  The decision has a number of interesting elements and is well worth a read, but it’s most notable for its treatment of the deference issue.

We all know that courts defer to reasonable agency decision-making. … More