A California appellate court affirmed a lower court decision denying a natural gas company's petition challenging an air district rule requiring the company to monitor, record, and report changes in the quality of natural gas and air pollutant levels. The district acted reasonably in finding that ga...

A district court upheld a NMFS biological opinion (BiOp) concluding that EPA's registration decisions under FIFRA for three insecticides—chlorpyrifos, diazinon and malathion—were likely to jeopardize the continued existence of 27 protected species of salmon and steelhead fish and would destroy o...

The D.C. Circuit upheld an EPA rule issued in 2010 that amends and clarifies transportation conformity regulations as they pertain to hot spot analyses in particulate matter (PM) nonattainment and maintenance areas. Transportation conformity is required under the CAA to ensure that new federally sup...