Users subject to National Categorical Pretreatment Standards (NCPS) as contained in 40 CFR I, Subchapter N, Part 405-471 shall comply with the standards and applicable reporting requirements under 40 CFR 403.12. New sources of categorical discharge shall meet National Categorical Pretreatment Standards in the shortest feasible time, but in no case longer than 90 days from the commencement of discharge. Failure to comply shall be a violation of this chapter and subject the user to enforcement action. The WRA is required to notify all known affected categorical users of the applicable reporting requirements under 40 CFR 403.12. Failure of the WRA to notify a user shall not relieve the user of the duty, if any, to comply with National Categorical Pretreatment Standards.