Description: This report provides background information on recent Environmental Protection Agency (EPA) regulatory activity to help address concerns surrounding its power. It examines 45 major or controversial regulatory actions taken by, or under development at, the EPA since January 2009, providing details on the regulatory action itself, presenting an estimated timeline for completion of the rule, and, in general, providing EPA's estimates of costs and benefits, where available. The report also discusses factors that affect the timeframe in which regulations take effect, including statutory and judicial deadlines, public comment periods, judicial review, and permitting procedures, the net results of which are that existing facilities are likely to have several years before being required to comply with most of the regulatory actions under discussion.

Description: This report discusses the total maximum daily load (TMDL) program which regulates pollutants to ensure that water quality standards can be attained; section 303(d) of the Clean Water Act requires states to identify waters that are impaired by pollution, even after application of pollution controls. The report focuses on new challenges facing the TMDL program, including more complex TMDLs, larger scale impairments, and nonpoint sources.