Freshwater wetlands

No freshwater wetland, as defined in R.I.G.L. § 2-1-20, as amended, and the Rules and Regulations Governing the Administration and Enforcement of the Freshwater Wetlands Act, as amended, promulgated by the Rhode Island State Department of Environmental Management (collectively, the "Wetlands Law and Regulations"), shall be altered, excavated, drained or filled nor shall any extraneous materials be placed in these wetlands or water flow diverted out of or any other change be made to the natural condition of any freshwater wetland without prior approval of the Rhode Island Department of Environmental Management, and the Johnston Town Council in accordance with the provisions of said Law and Regulations.