Construction Sites Program

About the MS4 Program

The MS4 permit requires CDOT to implement a program to reduce or prevent the discharge of pollutants to the MS4 from covered construction activities. To prevent pollution and degradation of State Waters, CDOT requires the installation of temporary control measures at CDOT’s construction sites. These control measures must be selected, designed, installed, implemented, and maintained to provide control for all potential pollutant sources, especially sediment. Additionally, CDOT must require Stormwater Management Plans (SWMPs), provide inspections of its construction sites, and have enforcement procedures to enforce the requirements of the permit. CDOT meets our MS4 permit requirements through a variety of program documents, forms, trainings, templates, guidance documents, and enforcement mechanisms.

CDOT Program Documents

• Construction Program Program Description Document
• MS4 Construction Program Manual
• Project Level MS4 Construction Program Compliance Checklist (draft)
• MS4 Construction Program Organizational Chart
• Environmental Bulletin: Related Construction Areas
• Environmental Bulletin: Owner-Operator due to CSP COR400000
• Stormwater Related Design Bulletins - Including 2021-1, 2020-5, 2020-4 (SWMP and Landscape Establishment Guidance) and 2019-1 (Revisions to Specifications 107.25 and 208)
• Stormwater Related Construction Bulletins - Including 2021-4 (ESCAN/CARL updates) and 2021-2 and 2019-1 (Stormwater Construction Permit changes)

CDOT Inspection Forms 

• CDOT 1388 - Daily Stormwater Log
• CDOT 1176 - Stormwater Field Inspection Report - Active Construction
• CDOT 1177 - Stormwater Field Inspection Report - Post Construction

CDOT Trainings, Templates, & Guidance Documents

• Colorado Stormwater Construction Permit
• 2019 Erosion Control and Sedimentation Field Guide - English version, Spanish version
• CDOT SWMP Information and Template
• TECS Trainings/Registration Information
• SWMP Certification
• CARL User Guide - Project Engineer
• CARL Training Video - Project Engineer
• CARL User Guide - Contractor
• CARL Training Video - Contractor

---

CDOT Enforcement Mechanisms

CDOT’s primary enforcement mechanisms are our contracts, Water Quality Specifications, and M-Standards. If you are currently under a contract with CDOT, you should use the version of Specifications that was included in your contract. The most current versions of CDOT’s Water Quality Specifications, Subsection 107.25 – Water Quality Control and Section 208 – Erosion Control can be found on the Design and Construction Project Support web page. 

Click here for the current version of CDOT's M-208-1 and M-216-1 Standard Plans.