UST Check → counties → Colorado → Weld
Underground storage tanks & leak sites in Weld County, CO
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.
595registered tank facilities
365open tanks
1,137closed tanks
358leak incidents on record
15cleanups still open
15 leak cleanups in
Weld County are still open — the state has not closed the case.
An open cleanup near a property you're buying or lending on is a findable, checkable fact: it appears in a
per-address screen with distance and the registry record.
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 |
|---|---|---|---|---|
| Circle K Store #2709846 | Longmont | 7 / 8 | Open UST(s) | CO548 |
| Love's Travel Stop #668 | Berthoud | 7 / 0 | Open UST(s) | CO20096 |
| Sunmart 507 | Evans | 7 / 0 | Open UST(s) | CO15207 |
| Conoco Truck Stop | Longmont | 5 / 6 | Open UST(s) | CO5768 |
| 16th Street Plaza | Greeley | 5 / 2 | Open UST(s) | CO1791 |
| Petroleum Expl & Mgmt dba Roustabout Convenience | Platteville | 5 / 0 | Open UST(s) | CO18473 |
| Loves Travel Stop #377 | Hudson | 5 / 0 | Open UST(s) | CO18362 |
| U-Fill-It Gas Station | Greeley | 5 / 0 | Open UST(s) | CO8349 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Loaf'n Jug #12 | Berthoud | 2018-09-05 | — | CO13124 |
| Far Better Convenience | Milliken | 2018-08-21 | — | CO13116 |
| Atmos Energy | Greeley | 2018-06-29 | — | CO13067 |
| Agfinity Tire and Service | Eaton | 2018-06-22 | — | CO13066 |
| Stinker Store #305 | Greeley | 2018-06-08 | — | CO13052 |
| 7-Eleven #39077 | Greeley | 2017-09-15 | — | CO12847 |
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 595 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 15 cases in this county are still 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