Whether the Clean Water Act regulates discharges to groundwater has been a topic of significant debate. At this point, there seems to be something of a trend in the cases towards concluding it does, but it remains true that all of the courts of appeal that have addressed the issue have concluded that it does not. As I have noted, the problem with the “yes” answer is that pretty much all groundwater eventually discharges to surface water,… More
Tag Archives: “affirmative defenses”
Although citizen groups have suffered some defeats in Clean Air Act cases in the NSR/PSD context recently, a decision last week in a different kind of CAA case is a reminder of just how powerful a weapon citizen suits can be, and just how difficult they can be to defend, even when the operator appears to have a good working relationship with the regulator. In NRDC v.… More
On Wednesday, EPA published certain amendments to the Mercury and Air Toxics Standards in the Federal Register. EPA describes most of the changes as “technical corrections,” but there is one important substantive change. EPA has deleted the affirmative defense for violations caused by equipment malfunctions.
The change follows EPA’s 2015 SIP call requiring states to delete affirmative defenses for violations related to startup, shutdown, or malfunction events. … More
Last week, EPA finally responded to the Sierra Club’s petition requesting that it eliminate exemptions and defenses for excess emissions resulting from startup, shutdown, or malfunction events. EPA concluded that it needed to issue a SIP call to 36 states requesting that they revise their SIPs to conform to EPA’s current understanding regarding how SSM events should be handled.
The SIP call will require affected states to eliminate three separate types of protection currently given to generators in connection with excess emissions during SSM events:
- Automatic exemptions
- “Director’s discretion”…
Cement Kiln Operators Better Hope that Their Control Technology Works: D.C. Circuit Vacates EPA’s Affirmative Defense Rule
Last week was hazardous air pollutant regulation week at the D.C. Circuit Court of Appeals. First, as we reported, the Court affirmed EPA’s mercury air toxics rule, determining that EPA need not take cost into account in promulgating rules for electric generating units (EGUs) under § 112(n) of the CAA. On Friday, the Court affirmed the substance of EPA’s revised hazardous air pollutant rules for cement kilns,… More