Environmental Protection Agency

Economically Significant Regulation

National Pollutant Discharge Elimination System-Cooling Water Intake Structures at Existing Facilities and Phase I Facilities

April 20, 2011 - 76 FR 22174 - RIN: 2040-AE95 - Download Full Notice: Text | PDF

This proposed rule would establish requirements under section 316(b) of the Clean Water Act (CWA) for all existing power generating facilities and existing manufacturing and industrial facilities that withdraw more than 2 million gallons per day (MGD) of water from waters of the U.S. and use at least twenty-five (25) percent of the water they withdraw exclusively for cooling purposes. The proposed national requirements, which would be implemented through National Pollutant Discharge Elimination System (NPDES) permits, would establish national requirements applicable to the location, design, construction, and capacity of cooling water intake structures at these facilities by setting requirements that reflect the best technology available (BTA) for minimizing adverse environmental impact. The proposed rule constitutes EPA's response to the remand of the Phase II existing facility rule and the remand of the existing facilities portion of the Phase III rule. In addition, EPA is also responding to the decision in Riverkeeper I and proposing to remove from the Phase I new facility rule the restoration-based compliance alternative and the associated monitoring and demonstration requirements. EPA expects this proposed regulation would minimize adverse environmental impacts, including substantially reducing the harmful effects of impingement and entrainment. As a result, the Agency anticipates this proposed rule would help protect ecosystems affected by cooling water intake structures and preserve aquatic organisms and the ecosystems they inhabit in waters used by cooling water intake structures at existing facilities.

Agency Contact: For additional technical information, contact Paul Shriner at 202-566-1076; e-mail: shriner.paul@epa.gov. For additional economic information, contact Erik Helm at 202-566-1049; e- mail: helm.erik@epa.gov. For additional biological information, contact Tom Born at 202-566-1001; e-mail: born.tom@epa.gov.

This is a proposed regulation. Comments were due on July 19, 2011.


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