The U.S. Environmental Protection Agency (EPA) said it will finalize the cooling water intake rule by April 17, 2014, the sixth extension to finalize the rule.

EPA was set to finalize the rule on Jan. 14, but the agency said in a statement that it would miss that deadline because they were still in discussions with parties involved. EPA signed a settlement agreement with Riverkeeper in November 2010 to propose standards by March 14, 2011 and finalize them by July 27, 2012. Several amendments were signed  to extend the finalization dates, including one amendment signed after the two-week government shutdown in November 2013.

The rule requires about 670 existing power plants to use the best available technology on cooling water intake structures to protect against the impingement and entrainment of aquatic life.

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