(1) After notice and opportunity for a public hearing, any permit issued under the NPDES can be modified, suspended or revoked in whole or in part during its term for cause including, but not limited to, the causes listed in WAC 463-76-055(2).

(2) The council may, upon request of a permittee, revise or modify a schedule of compliance in an issued NPDES permit if the council determines good and valid cause exists for such revision and if within thirty days following receipt of notice from the council, the regional administrator does not object in writing.

(3) Any such modifications shall be executed by the council and the permittee in the same manner as the NPDES permit was executed, including full compliance with the requirements of WAC 463-76-041, 463-76-042 and 463-76-043.