Section 404 of the Clean Water Act (CWA) authorizes the U.S. Army Corps of Engineers (Corps) or an approved State or Tribe to issue permits for discharges of dredged or fill material at specified sites in waters of the United States. Section 404(c) of the Clean Water Act authorizes the EPA Administrator "to prohibit the specification (including withdrawal of the specification) of any defined area as a disposal site" as well as to "deny or restrict the use of any defined area for specification (including the withdrawal of specification) as a disposal site ... whenever he determines, after notice and opportunity for public hearings, that the discharge of such materials into such area will have an unacceptable adverse effect on municipal water supplies, shellfish beds and fishery areas (including spawning and breeding areas), wildlife, or recreational areas." The current regulations include four steps for when the EPA takes an action under CWA section 404(c): 1) the Regional Administrator (RA) informs the Corps and 404 permit applicant that the EPA is initiating the 404(c) process to prohibit, restrict, deny or withdraw a specification or the use of an area for discharge of dredged or fill material in waters of the United States; 2) the RA requests public comment on the EPA's proposed determination to take the specified action related to the discharge at the defined site(s); 3) the RA provides a recommended determination to the EPA Administrator; and 4) the EPA Administrator prepares a final determination and communicates the findings to the Corps and applicant. This rulemaking will consider changes to the EPA's CWA section 404(c) review process that would govern the future use of the EPA's CWA section 404(c) authority.