Cheyenne, WY Environmental Rules: Erosion Control (2026)
Key Facts
- Governing chapter
- 13.28 Urban Stormwater Quality Management
- Trigger threshold
- 1+ acre land disturbance (or phased plan)
- Enforcement tool
- Proof of WYPDES permit compliance required
- Penalty
- Up to $750 fine or 6 months jail
- Enforcing office
- City engineer / stormwater management office
Summary
Any construction project in Cheyenne covered by a WYPDES construction stormwater permit must comply with that permit's erosion and sediment control terms, and the city engineer can demand proof of compliance before issuing site plans or building permits.
Any person subject to an industrial or construction activity WYPDES stormwater discharge permit shall comply with all provisions of such permit. Proof of compliance with said permit may be required in a form acceptable to the city engineer prior to or as a condition of a subdivision map, site plan, building permit, or development or improvement plan; upon inspection of the facility; during any enforcement proceeding or action; or for any other reasonable cause.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 73).
Full Breakdown
Cheyenne City Code 13.28.120 requires anyone subject to an industrial or construction activity WYPDES stormwater discharge permit to follow every term of that permit, which is how the city enforces erosion and sediment control on job sites disturbing an acre or more. The city engineer can require proof of compliance as a condition of a subdivision map, site plan, building permit, or development plan, and can also check compliance during facility inspections or enforcement actions. Section 13.28.130 separately requires BMPs, including erosion and sediment control practices, to keep sediment out of the storm drain system.
Violations & Fines
Violating this stormwater chapter is a misdemeanor under Section 1.24.010, fined up to $750 plus court costs or six months in jail, with each day a separate offense; violations can also be abated as a public nuisance.
Frequently Asked Questions
Does Cheyenne require an erosion control plan for construction?
What happens if I skip erosion controls on a Cheyenne job site?
Sources & Official References
Other rules in Cheyenne
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