United States Sixth Circuit

In a matter brought under the Clean Water Act (CWA), judgment of district court in favor of defendant Environmental Protection Agency (EPA) is affirmed in part, reversed in part, vacated in part and remanded where: 1) with respect to plaintiffs' challenge to the EPA's approval of Kentucky's categorical exemption of six types of pollution discharges from Tier II review, though the EPA's decision document details the tests conducted to measure each exemption's impact, the document often fails to include the resulting measurements; 2) court cannot review this legal conclusion's reasonableness without the EPA first discussing its assimilative-capacity loss estimates and explaining why it deems them insignificant; 3) EPA's approval of Kentucky's classification of certain waters as eligible for Tier I protection rather than Tier II protection was not arbitrary, capricious, and contrary to law. Case is remanded to EPA so that it may address the deficiencies in its consideration of state's de minimis exemptions.

Appellate Information

• Decided 09/03/2008
• Published 09/03/2008

Judges

Court

• United States Sixth Circuit

Counsel