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DEM Home > Programs > Bureau of Environ. Prot. > Office of Water Res. > Permits > RIPDES > Storm Water Program
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Revised Request for Competitive Grant Proposals for Nonpoint Source Management & Narragansett Bay and Watershed Restoration Bond Fund

Final 2014 Soil Erosion & Sediment Control Handbook
(Printer-friendly version)

Stormwater Manual Page

2010 Annual Report Format and Instructions
(Word Doc)

2009 Annual Report Format and Instructions
(Word Doc)

2008 Annual Report Format and Instructions
(Word Doc)

2007 Annual Report Format and Instructions
(Word Doc)

2006 Annual Report Format and Instructions
(Word Doc)

Invitation to SW Ed & Outreach Program

Commitment Form/
Cooperative Agreement

(Word Doc)

Phase II SW Ed and Outreach Program - Minimum Requirements

Low Impact Development Checklist

URI Interest/
Needs Survey

MS4 Storm Water Coordinators

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FINAL Multi-Sector General Permit(eff. 8/15/13)

Final Multi-Sector General Permit NOI- (eff. 8/15/13)

Final Small MS4 General Permit
December 19, 2003

RIPDES Regulations

Amended: 2/5/03
Effective: 2/25/03


RIPDES Stormwater Program icon
RIPDES Storm Water Program

Phase I:

The National Pollutant Discharge Elimination System (NPDES) Phase I storm water program, initiated in 1990, required discharges from large construction sites, certain industrial activities and operators of "medium" or "large" MS4s (MS4s that serve a population of 100,000 or greater), to obtain permits and implement a storm water management program as a means to control polluted discharges from these activities. Since 1984, the Rhode Island Department of Environmental Management (RIDEM) has been the delegated authority to implement the NPDES program in Rhode Island (referred to as RIPDES).

Phase II:

The Environmental Protection Agency (EPA) finalized on December 8, 1999, the Storm Water Phase II Rule, that requires MS4s to obtain permits and establish a storm water management program that is intended to improve waterbodies by reducing the quantity of pollutants that can enter storm sewer systems during storm events.

The Storm Water Phase II Rule extends the coverage of the NPDES storm water program to include "small" MS4s. The Phase II Rule automatically covers on a nationwide basis all small MS4s located in "urbanized areas" (UAs) as defined by the Bureau of the Census. Small MS4s located outside of UAs may be subject to future designation on a case-by-case basis.

The RIPDES Program amended the RIPDES Regulations and has included Phase II storm water requirements (amended February 5, 2003)

Status of General Permits

The Multi-Sector General Permit for Storm Water Discharge Associated with Industrial Activities has been finalized and signed on July 11, 2013. The permit will become effective at midnight on August 15, 2013.

The General Permit for Construction Activity has been issued and is effective as of September 26, 2013 and will expire at midnight September 25, 2018.

The General Permit for Small MS4s and Industrial Activity at eligible facilities operated by regulated Small MS4s has been issued and signed on November 14, 2003.


Please check back soon for announcements regarding the availability of grant funds to support local projects to abate nonpoint source (NPS) pollution. Visit the Nonpoint Source Funding page for additional information or contact Betsy Dake at 222-4700 extension 7230 or

Related Links
RIDEM - Internet Map Server
EPA - Phase II of the NPDES Storm Water Program

For more information E-mail:

Margarita Chatterton (
Quick Reference:

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Who is Regulated under the Phase II Final Rule?

What are the Minimum Requirements for Regulated Small MS4 Operators?

What are the Permit Coverage Options for Regulated Small MS4s?

What are the Regulatory Deadlines?

How can I obtain Information on Funding or Training Opportunities?

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EPA NPDES Storm Water Phase II Final Rule

Rhode Island Urban Areas, Densely Populated Areas, and Divided Highways Map

RIPDES Construction General Permit

CGP Application Guidance

RI Model SESC Plan

For General Information 222-6800 • After Hours Emergencies 222-3070 • Disclaimer
rev. 9/3/14