EPA received petitions from the Utility Water Act Group and the U.S. Small Business Administration requesting reconsideration and an administrative stay of provisions of the EPA's 2015 final rule titled "Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category," (80 FR 67838; November 3, 2015). After considering the petitions, the Administrator decided that it is appropriate and in the public interest to conduct a rulemaking that may result in revisions to the 2015 Best Available Technology Economically Achievable effluent limitations and pretreatment standards for bottom ash transport water and flue gas desulfurization wastewater at existing sources.