UST Check → counties → North Dakota → Traill
Underground storage tanks & leak sites in Traill County, ND
Every figure below is from EPA UST Finder — the EPA-compiled national registry of state-reported underground storage tanks — county aggregates as published by EPA.
42registered tank facilities
45open tanks
104closed tanks
17leak incidents on record
—cleanups still open
Largest registered facilities
By open-tank count, from the facility-level registry. Every fact is attributed to the EPA record (linked ID); something wrong — use the correction path in the footer and we'll fix or remove it promptly.
| Facility | City | Open / closed tanks | Status | EPA record |
|---|---|---|---|---|
| Farmers Union Oil Company | Portland ND 58274- | 5 / 7 | Open UST(s) | ND5 |
| Caseys General Store #3550 | Mayville ND 58257- | 5 / 0 | Open UST(s) | ND11032 |
| MayPort Tesoro | Mayville ND 58257- | 4 / 5 | Open UST(s) | ND790 |
| Cenex Convenience Store | Hillsboro ND 58045- | 4 / 4 | Open UST(s) | ND1475 |
| Cenex Convenience Store | Mayville ND 58257- | 4 / 0 | Open UST(s) | ND5367 |
| Frontier Auto Service | Galesburg ND 58035- | 4 / 0 | Open UST(s) | ND2241 |
| Hatton Ampride | Hatton ND 58240- | 4 / 0 | Open UST(s) | ND10075 |
| Farmers Union Elevator Co (Oil Dept) | Buxton ND 58218- | 3 / 11 | Open UST(s) | ND760 |
What this means if you're buying or lending here
- "Closed" ≠ clean. A closed tank was taken out of service per the registry — many were closed without soil testing, especially before the late 1990s.
- The registry is incomplete by design. Tanks removed before 1986 and most residential heating-oil tanks were never registered. A county with 42 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. Where a cleanup is open, contamination may still be under investigation or remediation — distance from a specific parcel is what matters, and that's a per-address question.
Screen a specific property
This page covers the county. A purchase or loan decision needs the registry around one address: registered tanks at the parcel, every facility within 500 and 1,500 ft, leak cleanups with status and distance — each line cited to the official record.
Screen an address — $49 How it worksThis is a screen of EPA-registered tank and leak records, not an environmental site assessment. State registries are incomplete by design: tanks removed before 1986 and most residential heating-oil tanks were never registered, so a clean screen cannot prove the absence of a tank. "Closed" means a tank was taken out of service per the registry — it does not certify that no contamination remains.
source: EPA UST Finder EPA data vintage 2024-12-04 computed 2026-06-12