(a) It shall be the policy of the Division of Environmental Quality of the Department of Energy and Environment to provide, on a case-by-case basis, a reasonable time for an existing permittee to comply with new or revised water quality-based effluent limits.
(b) Consequently, compliance schedules may be included in National Pollutant Discharge Elimination System (NPDES) permits at the time of renewal or permit modification initiated by the division to require compliance with new water quality standards.
(c) Compliance must occur at the earliest practicable time, in accordance with 40 C.F.R. §122.47.