MUNICIPAL STORMWATER (MS4*) SECTOR
[* Municipal Separate Storm Sewer Systems]

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• PERMITTING INFORMATION:
   
  • ACTIVE MS4 PERMITS
    http://www.epa-echo.gov/echo/compliance_report_water_icp.html
  • STATEWIDE MS4 General Permit 
    • COR090000  CDPS Stormwater Management Program Template application
                         Permit      Rationale
  • NON-STANDARD MS4 General Permit 
    • COR070000   CDPS Stormwater Management Program Template application
                        Permit        Rationale
  • CHERRY CREEK RESERVOIR BASIN MS4 General Permit 
    • COR080000   CDPS Stormwater Management Program Template application 
                         Permit        Rationale
  • OTHER PERMITTING FORMS

    • Amendments / Modifications

    • Notice of Transfer - to transfer the permit to another party

    • Withdrawl Request Form - to withdraw requests for new permits or modifications

  • Application and measurable goal guidance
    • Colorado Phase II Stormwater Municipal Resources
    • Guidance for assuming MS4 permitting responsibilities
  • Qualifying Local Programs guidance and application
• COMPLIANCE INFORMATION:
   
  • Colorado WQCD  "MS4 Matters" Information bulletin
               9-18-2009     #1
              11-02-2009    #2
               1-08-2010     #3
               5-24-2010     #4
  • COMPLIANCE FORMS
    •  Notice of Change of Contacts
    • Annual Report Forms (open as PDF)
      • Annual Report Form - COR090000 - Statewide City and County
      • Annual Report Form - COR080000 - Cherry Creek City and County
      • Annual Report Form - COR070000 - Nonstandard MS4
    • Targeted Permit Questionnaire - COR090000 and COR080000  DUE 10/15/2012
  • COMPLIANCE ASSISTANCE DOCUMENTS
    • Resource list for municipalities
    • Guidance on Mosquitoes, West Nile Virus, and Post Const. BMPs
    • MS4 Construction Site Erosion Control Oversight - State Land
    • MS4 Lowrisk Discharge Policy Guidance
    • Fire Safety Maintenance Activities Draft Guidance 10-2011
    • Teacher resources for introducing urban stormwater quality concepts to the classroom  
      - including example lesson plans meeting Colorado standards for science, geography and civics
    • MS4 Audit Guide 
       
• OTHER MS4 INFORMATION

Municipal industry Q&A - guidance on applying for industrial and construction permits for municipalities

List of permitted MS4s in Colorado

MS4 Contact Information

Urban Area Maps 

• Urban area map fact sheet (READ FIRST)
   
  • Adams and Aurora only
  • Adams, no Aurora
  • Arapahoe
  • Boulder
  • Denver
  • Douglas
  • El Paso
  • Jefferson
  • Larimer
  • Mesa
  • Pueblo
  • Weld, Far West
  • Weld, Greeley area