(a)General. The district engineer may reevaluate the circumstances and conditions of any permit, including regional permits, either on his own motion, at the request of the permittee, or a third party, or as the result of periodic progress inspections, and initiate action to modify, suspend, or revoke a permit as may be made necessary by considerations of the public interest. In the case of regional permits, this reevaluation may cover individual activities, categories of activities, or geographic
(a) (1) The Memorandum of Agreement shall provide a period of time (up to 90 days from receipt of proposed permits) to which the Regional Administrator may make general comments upon, objections to, or recommendations with respect to proposed permits. EPA reserves the right to take 90 days to supply specific grounds for objection, notwithstanding any shorter period specified in the Memorandum of Agreement, when a general objection is filed within the review period specified in the Memorandum of Agreement
When the Director receives any information (for example, inspects the facility, receives information submitted by the permittee as required in the permit (see § 122.41 ), receives a request for modification or revocation and reissuance under § 124.5 , or conducts a review of the permit file) he or she may determine whether or not one or more of the causes listed in paragraphs (a) and (b) of this section for modification or revocation and reissuance or both exist. If cause exists, the Director may
(a) Under section 303(c) of the Act, EPA is to review and to approve or disapprove State-adopted water quality standards. The review involves a determination of: (1) Whether the State has adopted designated water uses that are consistent with the requirements of the Clean Water Act; (2) Whether the State has adopted criteria that protect the designated water uses based on sound scientific rationale consistent with § 131.11 ; (3) Whether the State has adopted an antidegradation policy that is consistent