R.I. Gen. Laws § 45-61.1-4: Department of environmental management.

The department is hereby authorized, as necessary, to modify the basic requirements of the general RIPDES permit for regulated small MS4s to implement the provisions contained in §§ 45-61.1-1 — 45-61.1-3. The department may amend its regulations, as necessary, to bring the general RIPDES permit program for regulated small MS4s into consistency with the requirements of this section.