Colorado SWPPP Compliance
Quick Facts for Colorado
- Authority: Colorado Dept. of Public Health & Environment (CDPHE) (CO)
- Permit: COR400000 Stormwater Discharge Permit
- Inspection Schedule: Every 14 days + post-storm
- Rain Trigger: Precipitation causing runoff
Regulation Overview
Permitting Authority
Official Permit
Inspection Frequency
Rain Event Trigger
State vs. Federal (EPA)Varies
Runoff-Based Trigger
Colorado uses a performance-based trigger ('causing runoff') rather than a strict numerical rain value for some sites.
Inspection Requirements for Colorado
Construction projects that disturb one or more acres—or smaller sites that are part of a larger common plan—commonly require stormwater permit coverage in Colorado. Eligibility, exemptions, local approvals, and project-specific conditions vary, so confirm coverage under the COR400000 Stormwater Discharge Permit before construction begins.
Operational Insight
A 14-day schedule may be paired with an event-driven inspection requirement. Track both the recurring deadline and qualifying weather events so one schedule does not obscure the other.
Specific State Nuance
Inspections required after any event causing surface runoff. Special attention to snowmelt runoff in spring.
Common BMPs Checked in Colorado
- Silt Fences & Perimeters
- Construction Entrances
- Concrete Washout Areas
- Inlet Protection
- Stockpile Management
- Dust Control
Continue your field review
Check common controls in the BMP field guide, then compare them with your approved SWPPP.
Regulatory Filing
Official Resources
Why Go Digital?
Handwritten logs are hard to read and easy to lose. Digital reports provide a timestamped, geo-tagged audit trail that protects your business.