Arvada, CO Environmental Rules: Erosion Control (2026)
Key Facts
- Permit trigger
- 0.5 acres or more of land disturbance
- Site disturbance cap
- 60 acres per site absent director approval
- Inspection frequency
- Every 14 days, plus after storms/snowmelt
- Financial security
- Cash escrow or letter of credit required
- BMP removal deadline
- Within 14 days of final stabilization
- Penalty
- Fine/imprisonment under § 1-5; continuing offense
Summary
Any land disturbance of 0.5 acres or more in Arvada needs a site disturbance permit under Section 50-51, backed by an erosion and sediment control (ESC) plan and cash escrow or letter of credit. Permittees must inspect BMP and erosion controls at least every 14 days, and within 24 hours after any storm, wind, or snowmelt event that causes surface erosion, under Section 50-57.
(a) Generally. All land disturbance activity must comply with the city's Land Development Code, the Engineering Standards, this article, and any other applicable guidelines and standards adopted by the city. No land disturbance activity may exceed 60 acres on any one site unless authorized by the director. (b) Permit required. ... a site disturbance permit is required for each site or subdivision filing prior to conducting any land disturbance activity that: (1) Covers an area equal to or greater than 0.5 acres... ... The permittee must inspect all erosion and sediment control measures on the site on a regular basis but no less than every 14 days. The permittee must also inspect all erosion and sediment control measures on the site within 24 hours after the end of any precipitation, windstorm, or snowmelt event that causes surface erosion.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: City Council Policy Manual: Supplement 1 | Code of Ordinances: Supplement 67).
Full Breakdown
Section 50-51(a) requires all land disturbance activity to comply with the Land Development Code, the Engineering Standards, and Chapter 50, and caps disturbance at 60 acres per site unless the director authorizes more. 5 acres still needs a permit if it is part of a larger planned development or an environmentally sensitive area. ' Before any disturbance begins, Section 50-57(b) requires the applicant to install initial BMP and schedule an inspection with the public works department. Section 50-57(c) then requires the permittee to inspect all erosion and sediment control measures on a regular basis but no less than every 14 days, and again within 24 hours after any precipitation, windstorm, or snowmelt event that causes surface erosion, covering the site perimeter, disturbed areas, exposed material storage, and discharge locations.
Section 50-54 requires a cash escrow or letter of credit before permit issuance to secure BMP installation and site stabilization, which the director can waive for public or quasi-governmental applicants. Temporary BMP must come out within 14 days after final stabilization under Section 50-58(b)(5), and Section 50-59 makes the owner responsible for maintaining stormwater drainage facilities after the permit closes.
Violations & Fines
Section 50-73(a) makes it unlawful to construct, enlarge, alter, repair, or maintain any grading, excavation, or fill without a site disturbance permit, or contrary to the permit's terms or conditions. Section 50-75 punishes that and other Chapter 50 violations, including the false-statement, inspection-refusal, and BMP-maintenance failures listed in Section 50-74, with a fine or imprisonment up to the limits in Section 1-5 of the Arvada City Code, with each continuing day a separate offense.
Frequently Asked Questions
When do I need a site disturbance permit in Arvada?
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Sources & Official References
Other rules in Arvada
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Erosion Control in Nearby Cities
How other cities in Jefferson County handle erosion control.