CO7,800 active USTs
Colorado Gas Station Compliance Guide
Everything fuel station operators in Colorado need to know about UST compliance, managed by the Colorado Dept. of Labor & Employment.
State Agency
Colorado Dept. of Labor & Employment
Petroleum Storage Tank Program
Compliance Deadlines
Federal EPA Requirements
| Requirement | Deadline | Penalty | CFR |
|---|---|---|---|
| Monthly Release Detection | Ongoing — monthly | $11,524/day | 40 CFR 280.41 |
| Annual Walkthrough Inspection | Annually by Oct 13 | $59,017/day | 40 CFR 280.36 |
| Operator Training (Class A/B/C) | Within 30 days of designation | $25,000 | 40 CFR 280.242 |
| Financial Responsibility | Continuous | $11,524/day | 40 CFR 280.90 |
| Spill/Overfill Prevention Equipment | Required at all UST systems | $59,017/day | 40 CFR 280.30 |
| Corrosion Protection Testing | Every 3 years (impressed current) / 5 years (other) | $11,524/day | 40 CFR 280.31 |
| Release Reporting | Within 24 hours of discovery | $59,017/day | 40 CFR 280.50 |
| UST Registration/Notification | Within 30 days of installation | $11,524/day | 40 CFR 280.22 |
Colorado State Requirements
| Requirement | Deadline | Frequency | Penalty |
|---|---|---|---|
| Tank Registration | Prior to operation | One-time | $1,000/day |
| Annual Tank Fee | Annually | Annual | Late fee + interest |
| Release Detection | Monthly | Monthly | $1,000/day |
Penalties & Enforcement
Max Daily Penalty
$1,000
Max Per Violation
$10,000
Criminal Penalties
No
Cleanup Fund
Petroleum Storage Tank Fund
Coverage Limit
$1,000,000
Deductible
$10,000
Eligible
Yes
Fund covers eligible cleanup costs.
Operator Training
Class A
Required
Class B
Required
Class C
Required
Online Accepted
Yes
Refresher interval: 3 years
Approved providers: CDLE-approved
Registration & Fees
Annual Tank Fee
$120/tank
Registration Fee
$75
Late Penalty
$100/month
Find a UST Inspector
Disclaimer: This guide is based on published Colorado regulations. Requirements change — always verify current obligations with the CDLE.