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NPDES Phase II Storm Water Regulations:
WHAT MUNICIPAL GOVERNMENTS NEED TO KNOW
Overview Why care about storm water? What are the NPDES Phase II
regulations? How does Phase II affect
communities? How much is it going to cost?
Why care about storm water?
Rain & snow become “storm water” when they hit the ground
Storm water runoff affects the health of our waterways
Why care about storm water?
Natural System: Slow absorption Ground water
recharge Natural filtration Low runoff
Developed System: Decreased absorption Decreased recharge Pollutant runoff High runoff
Impacts: Erosion & sedimentation Flooding Decreased aesthetics &
recreation opportunities
Why care about storm water?
Pollutants fall on impervious surface
Oil in
parking lot
Polluted storm water enters storm drain
Storm water enters waterway
Typical roadside
catch basin Storm drain outfall
Impaired waterway
Failed silt fence
Sedimentation and flooding during rain event
Why care about storm water? Reducing vegetation / increasing
impervious surface increases storm water volume
Higher flows when it rains; lower flows during dry weather
Storm water QUANTITY and QUALITY must be managed properly
Why care about storm water?
Benefits of storm water management: Decreased flooding
Land preservation through erosion control
Improved wetland and riparian habitat
Lower capital investment in infrastructure
Reduced operations & maintenance costs
What are the NPDES Phase II Stormwater Regulations?
National Pollutant Discharge Elimination System, established in 1987 under the Clean Water Act
Phase I (1990) covers industrial sites, construction sites over 5 acres, and municipalities over 100,000
Phase II (2003) covers industrial sites, construction sites over 1 acre, and ALL public entities (municipalities and institutions) operating separate storm sewer systems AND contained within the U.S. Census Urbanized Area
Phase II affects…
Cities, villages and townships in the urbanized area
Counties
Public institutions (schools, hospitals, prisons, etc.)
Construction sites over 1 acre
What are the NPDES Phase II Stormwater Regulations?
NPDES Phase II Goal:
To reduce the discharge of pollutants to the “maximum extent practicable” to protect water quality
What are the NPDES Phase II Stormwater Regulations?
Permit Requirements:
Jurisdictional Public Education Illicit Discharge EliminationPublic Participation
Pollution Prevention & Good Housekeeping
Construction Storm Water Runoff Control
Post Construction Storm Water Management
Watershed Public EducationIllicit Discharge Elimination Public Participation
Watershed Plan
Storm Water Pollution Prevention Initiative
How does Phase II affect communities?
Public Education Plan (PEP): Educate the public about reducing storm water pollution
Illicit Discharge Elimination Plan (IDEP): Map storm sewer systems, identify and eliminate pollution sources
How does Phase II affect communities?
Watershed Plan: Compile water quality data across the watershed, determine goals and actions to achieve those goals
Public Participation Plan: Involve the public in development of watershed plan
Storm Water Pollution Prevention Initiative: Identifies water quality initiatives to be undertaken by each community; based on watershed plan
How does Phase II affect communities?
Both permits require implementation of Best Management Practices (BMPs):
Structural BMPs: detention ponds swales infiltration basins sand filters filter strips swirl concentrators
Non-Structural BMPs: ordinances & zoning education & outreach maintenance activities
(drain cleaning, street sweeping)
How does Phase II affect communities?
Effective storm water management requires actions by ALL municipal departments
Actions must be coordinated and communicated between departments and other agencies (e.g. county)
How does Phase II affect communities?
Many departments have a role: Public Works / Public Services Planning & Zoning Building Fleet & Building Maintenance Parks & Recreation Finance
How does Phase II affect communities?
Public Works / Public Services:• Development of watershed management
plan• Structural and non-structural BMPs (e.g.
engineering standards & ordinances)• Erosion control• Public education & outreach (e.g. pollution
hotline, water bill inserts)
How does Phase II affect communities?
Planning & Zoning:• Development of watershed management plan• Non-structural BMPs (e.g. ordinances and
zoning)• Public education & outreach
How does Phase II affect communities?
Building:• Soil erosion & sedimentation controls• BMP implementation
How does Phase II affect communities?
Fleet & Building Maintenance:• “Good housekeeping” (maintenance
activities)• Landscaping / grounds maintenance
How does Phase II affect communities?
Parks & Recreation:• Natural features protection• Landscaping / grounds maintenance• Public education & outreach
How does Phase II affect communities?
Finance:• Budgeting for Phase II
How much is it going to cost? Costs vary by community based on existing
programs (e.g. ordinances, newsletter, website)
Costs for some elements (e.g. public education) can be shared under watershed-based approach
Estimates range from $1.50 to $8 per capita during first permit cycle
Next steps… Your permit application was due March 10, 2003 Identify primary point of contact and supporting
contacts in key departments Identify partners – watershed communities,
nested jurisdictions, and other key stakeholders Inventory existing mechanisms to meet
requirements Begin development of draft IDEP & PEP Begin watershed planning
Summary Effective storm water management will protect
and improve the quality of our waterways over the long term
Effective implementation of Phase II requires cooperative efforts of a variety of departments within each municipality
Cooperative efforts within and between regulated entities are cost-effective
For more information…
Visit the web-site developed by SEMCOG and the Clinton River Watershed Council.
The Southeast Michigan Phase II Storm Water Information Clearinghouse.
www.crwc.org/projects/phase2/phase2home.html
Insert your contact information here…
For more information…
