(1) A division engineer may use his discretionary authority to modify, suspend, or revoke NWP authorizations for any specific geographic area, class of activities, or class of waters within his division, including on a statewide basis, by issuing a public notice or notifying the individuals involved. The notice will state his concerns regarding the environment or the other relevant factors of the public interest. Before using his discretionary authority to modify or revoke such NWP authorizations, division engineers will:
- (i) Give an opportunity for interested parties to express their views on the proposed action (the DE will publish and circulate a notice to the known interested public to solicit comments and provide the opportunity to request a public hearing);
- (ii) Consider fully the views of affected parties;
- (iii) Prepare supplemental documentation for any modifications or revocations that may result through assertion of discretionary authority. Such documentation will include comments received on the district public notices and a statement of findings showing how substantive comments were considered;
- (iv) Provide, if appropriate, a grandfathering period as specified in § 330.6(b) for those who have commenced work or are under contract to commence in reliance on the NWP authorization; and
- (v) Notify affected parties of the modification, suspension, or revocation, including the effective date (the DE will publish and circulate a notice to the known interested public and to anyone who commented on the proposed action).