The mission of the Rhode Island Department of Transportation is to maintain and provide a safe, efficient, environmentally, aesthetically and culturally sensitive intermodal transportation network that offers a variety of convenient, cost-effective mobility opportunities for people and the movement of goods supporting economic development and improved quality of life.

RIDOT Phase II Stormwater Management

Rhode Island DEM has been delegated authority to implement the US Environmental Protection Agency (EPA) NPDES program. In February 2002 and February 2003 the RIPDES regulations were amended to include EPA Phase II requirements. Phase II requires storm water discharges to waters of the state from industrial facilities owned or operated by small municipalities and from small municipal separate storm sewer systems (MS4s), located within urbanized areas or designated by the permitting authority, to obtain a RIPDES storm water permit. RIDOT is regulated as a MS4 under the RIPDES program, and is required to comply with permitting regulations.

The permit conditions include the preparation of a Storm Water Management Program Plan (SWMPP) that requires the development of six minimum control measures and incorporation of TMDL requirements, that when properly implemented will reduce pollutants to the maximum extent practicable. Additionally, annual reports must be prepared and submitted for approval.

RIDOT created a Stormwater Management Program Plan (SWMPP) and submitted it to RIDEM in September 2004. This plan highlights our intentions to achieve compliance. For each of the above minimum control measures, RIDOT has created a set of BMPs to meet or exceed regulations.

RI Department of Transportation