Post-Settlement Evidence Is Admissable, But Not Conclusive, On Issue of Diligent Prosecution
FRIENDS OF MILWAUKEE’S RIVERS v. MILWAUKEE METROPOLITAN SEWERAGE DISTRICT (February 13, 2009)
Friends of Milwaukee’s Rivers (“FMR”) filed a citizen suit under the Clean Water Act (“CWA”) against the Milwaukee Metropolitan Sewerage District (“MMSD”). FMR alleged that MMSD sewer overflows violated the CWA and MMSD’s permit. Wisconsin sued the MMSD the very same day. MMSD and Wisconsin settled their case soon thereafter. The settlement provided that MMSD would spend over $900 million in upgrades to its sewer system. On MMSD’s motion, the court dismissed FMR’s suit on two bases: the CWA itself and res judicata. On appeal, the Seventh Circuit reversed and remanded. The Court held that the CWA did not bar the suit because FMR filed first. With respect to res judicata, the Court held that the privity requirement depended on whether the settlement constituted “diligent prosecution,” defined as whether it was “calculated to result in compliance.” The Court remanded to the district court for that determination. After an evidentiary hearing and briefing, the district court found for the MMSD and dismissed the complaint on res judicata grounds. FMR appeals.
In their opinion, Judges Bauer, Cudahy and Wood affirmed. FMR’s main argument on appeal was that the lower court failed to give adequate weight to post-settlement evidence. Principally, FMR argued that massive sewer overflows in 2004 were evidence that the 2002 settlement terms did not result in compliance. The Court first looked at the “central” evidence – i.e., the evidence that existed at the time of the settlement. When the parties act in good faith and address all the known problems and foreseeable consequences, diligent prosecution exists without regard to later events. Turning its attention to post-settlement evidence, the Court found little authority and identified several problems with the consideration of post-settlement evidence. However, it also recognized that post-settlement evidence could be particularly probative of the adequacy of an agreement. The Court rejected the notion that it was wholly irrelevant, but refused to identify any bright-line test for its use. The admissibility and weight of post-settlement evidence will depend on the circumstances of a case. The Court determined that the district court did give adequate consideration to the post-settlement overflows. The district court merely believed the evidence presented by the MMSD that the overflows would not have been violations and that the settlement improvements would have prevented the overflows. The Court also determined that the lower court gave adequate consideration to the post-settlement enforcement activities of Wisconsin.
