NPDES Stormwater Program for Regulated Small MS4s

The Stormwater Phase II Final Rule (December 8, 1999) requires operators of regulated small municipal separate storm sewer systems (MS4s) to obtain a National Pollutant Discharge Elimination System (NPDES) permit and develop a stormwater management program designed to prevent harmful pollutants from being washed by stormwater runoff into the MS4 (or from being dumped directly into the MS4) and then discharged from the MS4 into local waterbodies.

Stormwater Phase II Final Rule Fact Sheet 2.0: Small MS4 Stormwater Program Overview (PDF) (3pp, 211K)

Information is provided on-line regarding:

• Who's Covered: an explanation of which operators of small MS4s are covered by the final rule, and provides the information necessary to help operators of small MS4s determine if the final Phase II program applies to them.
• Permitting Authority Implementation Options: the three permit choices and the flexible program implementation options that are available to operators of regulated small MS4s.
• Small MS4 Stormwater Program Requirements: the permit application and program requirements for operators of regulated small MS4s.

Program Development Guidance:

• Stormwater Phase II Compliance Assistance Guide (PDF) (98pp, 1.2MB)
• Measurable Goals Guidance for Phase II Small MS4s
• National Menu of Best Management Practices for NPDES Stormwater Phase II

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Last updated on May 02, 2008 10:15 AM
URL:http://cfpub1.epa.gov/npdes/stormwater/phase2.cfm