On July 19, 2011 EPA announced a 30-day extension of the public comment period for its proposed rule to regulate cooling water intake structures under Section 316(b) of the Clean Water Act. Public comments are now due on August 18, 2011. Many industry sources had requested that EPA extend the public comment period so they could more fully assess the impacts of this complex rule on their facilities. We encourage facilities that have not already submitted comments to use this extension to prepare and develop comments.