RIDEM graphical banner, showing land and water scene
Navigation button, HomeNavigation button, ProgramsNavigation button, TopicsNavigation button, MapsNavigation button, PublicationsNavigation button, NewsNavigation button, EventsNavigation button, SearchNavigation button, HelpNavigation button, Contact
DEM Home > Programs > Bureau of Environ. Prot. > Office of Water Res. > Permits > RIPDES > Storm Water Program > Storm Water MS4 Program > Requirements: Six Minimum Control Measures
RIPDES Stormwater Home

Municipal Separate Storm Sewer Systems (MS4s)

Construction Activity

Industrial Activity


Requirements: Six Minimum Control Measures

Phase II requirements for regulated small MS4 operators

The Phase II Rule requires an operator of a regulated small MS4 to apply for a RIPDES permit. The RIPDES application or NOI must include a Storm Water Management Program Plan (SWMPP) that describes the Best Management Practices (BMPs) for each of the following six minimum measures:

The SWMPP must contain the measurable goals for each minimum control measure (narrative or numeric, used to measure the success of the program) as well as an implementation schedule including interim milestones and frequency of activities and reporting of results. The Director can also require additional permit requirements based on the recommendations of a Total Maximum Daily Load (TMDL). For more information on TMDLs, visit the Office of Water Resources TMDL Program site.


  Related Links

EPA Stormwater Homepage

EPA National Menue of Stormwater Best Management Practices

Menu of BMP Background

EPA Storm Water Phase II Compliance Assistance Guide (2000)

RI Stormwater Solutions

RI Snow Disposal Policy

For General Information 222-6800 • After Hours Emergencies 222-3070 • Disclaimer
rev. 2/11/03