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The U.S. Court of Appeals for the 6th Circuit has issued a precedent-setting split ruling that sets a test for when a Clean Water Act (CWA) general permit can “shield” companies from citizen suit enforcement, expanding the scope of a 4th Circuit test on using the shield for individual CWA permits to broader general permits.

EPA faces dual legal bids seeking to force it to issue first-time Clean Air Act rules for concentrated animal feeding operations (CAFOs), with one suit claiming the air law includes a duty for the agency to craft the regulations and another trying to force a deadline for EPA to respond to years-old petitions asking it to decide on issuing such rules.

Industry officials are seeking meetings with EPA to urge the agency to reevaluate its controversial conclusion that the solvent trichloroethylene (TCE) causes cardiac birth defects, continuing ongoing push-back against Region 9's implementation of a 2011 risk value that has led to strict cleanup measures industry argues are costly and unnecessary.

EPA is weighing use of existing Toxic Substances Control Act (TSCA) authority to restrict uses of the controversial solvent trichloroethylene (TCE) in order to protect public health, including a novel TSCA section 6 rule to limit its use, despite objections from the chemical sector which claims that EPA is overstating the health risks of TCE.

An Iowa drinking water utility is seeking to subject several agricultural drainage districts to Clean Water Act (CWA) permitting requirements, challenging the efficacy of farms' voluntary nutrient reduction efforts and raising novel arguments that, if successful, could narrow the CWA's agricultural stormwater exemption.

Ahead of EPA's public hearings on its proposal to tighten its ozone air standard, environmentalists and industry officials are debating the science underpinning the agency's plan, with advocates touting data to bolster EPA's proposal while industry is emphasizing research that it says justifies retaining the existing ozone standard.