npdes stormwater and the town of wrightsville beach n.
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NPDES Stormwater and the Town of Wrightsville Beach. Stormwater 101. Why Worry about Stormwater?. What is stormwater? Stormwater is the runoff that occurs during and after perception. Stormwater is carried downhill and eventually enters creeks, lakes and rivers.

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Presentation Transcript
why worry about stormwater
Why Worry about Stormwater?
  • What is stormwater?
  • Stormwater is the runoff that occurs during and after perception. Stormwater is carried downhill and eventually enters creeks, lakes and rivers.
urban and industrial stormwater typical pollutants
Urban and Industrial Stormwater: Typical Pollutants
  • Suspended solids/sediments
  • Nutrients (nitrogen & phosphorus)
  • Metals (copper, zinc,lead and cadmium)
  • Oil & greases (PAHs)
  • Bacteria and other human pathogens
  • Pesticides & herbicides
  • Temperature
  • Trash and floatables
what is stormwater pollution
What is Stormwater Pollution?
  • Human Behavior can cause stormwater pollution …..
what is stormwater pollution1
What is Stormwater Pollution
  • Vehicle washing can cause stormwater pollution..
what is stormwater pollution2
What is Stormwater Pollution
  • Leaking equipment can cause stormwater pollution…..
what is stormwater pollution3
What is Stormwater Pollution
  • Poor tank management can cause stormwater pollution…..
what is stormwater pollution4
What is Stormwater Pollution
  • Poor material storage practices can cause stormwater pollution…
what is stormwater pollution5
What is Stormwater Pollution
  • Sediment and stream bank erosion can also cause stormwater pollution.
the federal stormwater program1
The Federal Stormwater Program
  • National Pollution Discharge Elimination System (NPDES)
  • Regulates sources of pollution at a recognizable point of discharge
    • pipes
    • ditches
    • other man made outlets
npdes regulated entities
NPDES Regulated Entities
  • Phase I
    • Large and medium municipalities
    • Industrial activities
    • Construction sites > 5 acres
  • Phase II
    • Small municipalities
    • Municipal industrial activities
    • Construction sites > 1 acre
town of wrightsville beach s required permits
Town of Wrightsville Beach’s Required Permits
  • Phase II MS4 Permit
    • Covers TOWB municipal jurisdiction area
    • Regulates the Municipal Separate Strom Sewer System (MS4)
  • Municipally Owned/ Operated Industrial Facilities

- Vehicle maintenance facilities

federal stormwater permits
Federal Stormwater Permits
  • Define minimum requirements
  • Establish compliance and enforcement capability
  • Include Federal; and State requirements
  • Issued by DWQ in North Carolina
npdes permit emphasis
NPDES Permit Emphasis
  • Control Stormwater pollutants by:
    • Raising awareness
    • Managing pollutant sources
    • Controlling runoff

…all to the Maximum Extent Practicable


mep the phase ii six minimum control measures
MEP- The Phase II Six Minimum Control Measures
  • Public Education and Outreach
  • Public Involvement / Participation
  • Illicit Discharge Detection and Elimination
  • Construction Site Runoff Control
  • Post- Construction Management
  • Pollution Prevention/ Good Housekeeping
towb s permit application
TOWB’s Permit Application
  • Submit to DWQ by March 10, 2003
  • Stormwater Program Proposal

- Based on MEP ( 6 minimum measures)

- Program components for the next 5 years

- Best Management Practices (BMPs)

- Measurable Goals

- Implementation Timelines

- Responsible Parties/ Departments

organizational impacts
Planning Department

Emergency Management

Transportation (Street Maintenance)

Transportation (Design)






Parks and recreation

Floodplain Management

System Design/ Construction

Program Responsibility

Spill response

System Maintenance

System Planning and Design


Resource Creation

Resource Accounting

Resource Support

Emergency response

Landscape Management

Organizational Impacts
public education and outreach
Public Education and Outreach
  • Education/ Outreach on Impacts
  • Guidelines:
    • Inform public on steps the can take
    • Partnership with other entities
    • Utilize existing materials where available
    • Reach Diverse audiences
  • Develop plan to set up regional cooperative or establish educational partnerships to accomplish education goals
  • Educational Materials
  • PSAs
  • Educational Signs
  • Educational Curriculum
  • Green Business Program
  • Illicit Discharge Education Program
public involvement participation
Public Involvement/ Participation
  • Provide Opportunities for Public Role in the Development and Implementation
  • Guidelines

- Involve Community stakeholders

- Hold public meetings/hearings

- Work with volunteer groups/projects

  • Stormwater Hotline
  • Water Clean Ups
  • Storm Drain Stenciling Program
  • Wetland and Buffer Restoration
  • Pet Waste Management
  • Volunteer Education Teams
illicit discharge detection elimination
Illicit Discharge Detection & Elimination
  • Program to Find and remove Non- Stormwater Inputs to the Storm Sewer System
  • Guidelines:

- Develop a storm sewer system map

- Develop legal authorities to prohibit and enforce

- Develop a plan to detect and remove

- Perform Educational Outreach

  • Adopt Illicit Discharge Detection Ordinance
  • Map and Conduct Initial Shoreline Surveys of Storm Water Drainage System
  • Create a Program to Collect Hazardous Waste, Oil, Tires, and Batteries
  • Pass Illegal Dumping Ordinance
  • Establish Enforcement
pollution prevention good housekeeping
Pollution Prevention / Good Housekeeping
  • Program to Examine and Alter Current MS4 Activities to Reduce Pollution
  • Guidelines:

- Evaluate existing programs

- Operation and maintenance program

- Education/training for municipal operations

  • Develop a Pollution Prevention Plan

- Hold Training Workshops on pollution prevention for municipal employees

- Procedures in place for catch basin cleaning and regular street and parking lot sweeping

  • Pollution Prevention Ordinance
construction site runoff control
Construction Site Runoff Control
  • Program to Reduce Stormwater Pollution from Construction > 1 acre
  • Guidelines:

- Regulatory mechanism for implementation

- Review of site plans for compliance with BMPs

- Regular Inspection and enforcement

- Procedures to consider information from the public

  • Implement Stormwater Pollution Prevention Plan (SWPP)
  • Construction Site Stormwater Control Ordinance
  • Construction Site Inspection and Enforcement Program
  • Contractor Certification Program
post construction runoff control
Post-Construction Runoff Control
  • Program to Reduce Pollutants in Post- Construction Runoff (sites w/land disturbance > 1 acre)
  • Guidelines:

-Implement along with construction site runoff program

- Applicable to new development and redevelopment

- Ensure Long term operation and maintenance of BMPs

- Non-structural BMPs

  • Post- Construction Stormwater Management Strategy

- Create Strategy

- Pass Post- Construction Stormwater Ordinance

  • Stormwater System Inspection Program
  • Pervious Surface Management Plan
state post construction requirements
State Post - Construction Requirements
  • Implement Post Construction Program by March 10, 2005
  • General:
    • 30’ building setbacks
    • Deed restrictions and protective covenants
    • Fecal Coliform / septic system control program

can coordinate with County

state post construction requirements cont d
State Post - Construction Requirements Cont’d
  • Low Density Development

- < 24% built upon area or 2 Dwelling Units per acre

- Vegetated conveyance systems

  • High Density Development

- Control new runoff volume from 1-yr., 24-hr. storm event

- Design to remove 85% TSS

-Annual maintenance inspection report

state post construction requirements cont d1
State Post - Construction Requirements Cont’d
  • Additional Requirements for SA waters

- No new expanded discharges

- Local ordinances

      • BMP selection for fecal coliform die- off
      • Pet Waste management program
      • Overnight program for septic systems
state post construction requirements cont d2
State Post - Construction Requirements Cont’d
  • Additional Requirements

- Local Ordinance

- BMP selection for nutrient removal

- Nutrient Application Management Program

successful phase i programs
Clearly defined goals and policies & visionary leadership

Political and popular support

Adequate funding mechanisms

Clear and complete regulations

Strong technical tools and capabilities

Encouragement of innovative land uses

Customer service orientation

Positive control of development

Comprehensive water quality programs

Public- private partnering in multi- objective land use

Strong public participation

Successful Phase I Programs
ms4 permit between now and march 10
MS4 PermitBetween now and March 10
  • Evaluate existing programs
  • Define gaps in MEP
  • Develop program to fill gaps
    • BMPs
    • Measurable goals
    • Implementation timelines
    • Responsible parties/departments
  • Submit permit application
upon ms4 permit issuance
Upon MS4 Permit Issuance
  • Implement Permitted Program
  • Perform Annual Assessment
    • Evaluate program compliance
    • Evaluate appropriateness of BMPs
    • Evaluate progress on measurable goals
    • Report to DWQ

Revise / Update Program