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Programs
You are here:
  1. Home
  2. Programs
  3. Environmental
  4. Water Quality
  5. Water Quality Documents
  6. MS4 Program
Resources
  • CDOT MS4 Permit
  • CDOT MS4 Permit Fact Sheet
  • CDOT MS4 Permit Fact Sheet Mod 1
  • CDOT MS4 Permit Mod2
  • CDOT MS4 Permit Fact Sheet Mod2
  • CDOT MS4 Permit Mod3
  • CDOT MS4 Permit Fact Sheet Mod3
  • CDOT MS4 Permit Mod 4
  • CDOT MS4 Permit Fact Sheet Mod4
MS4 Program https://www.codot.gov/programs/environmental/water-quality/documents/ms4-program https://www.codot.gov/@@site-logo/siteLogo.png

MS4 Program

CDOT MS4 Permit
CDOT MS4 Permit Fact Sheet
CDOT MS4 Permit Fact Sheet Mod 1
CDOT MS4 Permit Mod2
CDOT MS4 Permit Fact Sheet Mod2
CDOT MS4 Permit Mod3
CDOT MS4 Permit Fact Sheet Mod3
CDOT MS4 Permit Mod 4
CDOT MS4 Permit Fact Sheet Mod4


Report an Illicit Discharge

Hotline: 303-512-4426
Illegal discharges (aka, illicit discharges) emit into CDOT's storm drain system pollutants. 
(e.g., oil, grease, fertilizers, pesticides, grass clippings, leaves, or odd smelling/colored substances)

Environmental Programs Branch News
  • Viewshed Analysis & Conservation Planning May 12, 2023
  • New EPB Staff Archaeologist Jan 23, 2023
  • Innovations Challenge 2022 People's Choice Award Nov 16, 2022
  • Coffee at CDOT Aug 31, 2022
  • New Version of CDOT's Planning & Environmental Linkages Handbook Published Jun 14, 2022
Environmental Programs Branch News - More…
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