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EPA has issued a final drinking water guide for radiological emergencies that generally retains highly controversial measures from a draft version, despite a continuing outcry from environmental groups that the guide's allowance of concentrations far in exceedance of Safe Drinking Water Act (SDWA) limits undermines clean water protections.

An Alaskan metalworking firm is urging a federal appeals court to reject the Army Corps of Engineers' defense of its test for when wetlands are subject to Clean Water Act (CWA) mandates due to being “adjacent” to protected waters, saying the Corps' narrow reading of an exclusion for wetlands adjacent to other wetlands is “unreasonable.”

A land-holding firm is calling on a federal district court to take a broad view of when policy riders in spending bills stay in force after the appropriations expire, in order to overturn the Army Corps of Engineers' use of region-specific “supplements” to its Clean Water Act (CWA) manual for determining when property contains jurisdictional wetlands.

EPA is finalizing an air toxics rule for the ferroalloy manufacturing sector that includes novel requirements for plants to use digital camera monitoring technology, a method that industry groups oppose as setting an unjustified precedent that other sectors must now follow and could be replicated in a slew of other air rules.

EPA is taking initial steps toward developing a “health-based benchmark” to assess the relationship between drinking water lead levels and blood lead levels in children, which could allow the agency to assess the risk of reduced IQ as it prepares to propose revisions to its drinking water Lead & Copper Rule (LCR) later this year.

Janet McCabe, EPA's departing top air official, is defending the Clean Air Act as allowing effective and affordable ways to reduce conventional air pollutants and greenhouse gases (GHGs), just days before the incoming Trump administration begins with an expected push to try and undo some of the Obama EPA's major air and climate rules.

The incoming Trump administration's EPA transition team intends to remove non-regulatory climate data from the agency's website, including references to President Barack Obama's June 2013 Climate Action Plan, the strategies for 2014 and 2015 to cut methane and other data, according to a source familiar with the transition team.