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A new letter by Southern California Edison (SCE) expressing its support for the first time of the landmark climate change bill SB 350 reveals critical planned changes to the legislation on the Assembly floor next week, including new compliance tools for meeting a 50 percent renewable portfolio standard (RPS) by 2030, a mid-course review of stringent 2030 energy efficiency targets and incentives for utility investment in transportation electrification projects.

EPA's narrow application of a federal district court's injunction halting its Clean Water Act (CWA) jurisdiction rule in the 13 states that sought the court order -- and its apparent plan to use a similarly narrow approach if other courts issue injunctions -- could hasten Supreme Court review of the rule if the agency appeals the order, observers say.

A coalition of Southwest mining and other industry groups have filed suit in federal district court over EPA's rule to define the scope of the Clean Water Act (CWA), adding to more than a dozen individual legal challenges to the policy pending in district courts across the United States and exacerbating major confusion over the lawsuits.

A proposal to test a controversial 2010 study of Chinese workers exposed to formaldehyde may have spurred congressional report language for draft fiscal year 2016 EPA spending bills that calls on the agency to fund an effort to replicate the study, which undergirds the agency's draft assessment saying formaldehyde exposure can cause leukemia.

EPA's final revised ozone air standard currently undergoing White House review leans toward tightening the 2008 limit of 75 parts per billion (ppb) down to 70 ppb, industry sources say, which would be the weakest option of the 60 to 70 ppb range backed by the agency's science advisers -- though the rule could still change in the coming weeks.

A consumer advocacy group is raising concerns over proposed changes to a federal rule designed to protect human subjects who volunteer to perform in studies undertaken at EPA and other federal agencies' labs or with federal funding, saying the planned revisions would inappropriately limit oversight of the studies and would have questionable benefits.