UST Check → counties → Colorado → Fremont
Underground storage tanks & leak sites in Fremont 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.
127registered tank facilities
69open tanks
249closed tanks
68leak incidents on record
5cleanups still open
5 leak cleanups in
Fremont 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 |
|---|---|---|---|---|
| Alta Convenience #6321 | Penrose | 5 / 4 | Open UST(s) | CO10196 |
| Alta Convenience #6324 | Canon City | 4 / 4 | Open UST(s) | CO6640 |
| Alta #6122 | Canon City | 4 / 0 | Open UST(s) | CO4336 |
| Colorado Correctional Industries | Canon City | 3 / 4 | Open UST(s) | CO10825 |
| Federal Correctional FPC Garage | Florence | 3 / 0 | Open UST(s) | CO7165 |
| Cotopaxi Store Inc | Cotopaxi | 3 / 0 | Open UST(s) | CO6734 |
| Fremont Sanitation District | Florence | 3 / 0 | Open UST(s) | CO7630 |
| Alta Convenience #6323 | Florence | 3 / 0 | Open UST(s) | CO9952 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| TZ Liquor, LLC | Canon City | 2018-08-22 | — | CO13117 |
| Alta Convenience #6330 | Canon City | 2018-06-27 | — | CO13065 |
| Alta Convenience #6321 | Penrose | 2018-04-03 | — | CO12991 |
| Rainbow Court | Florence | 2007-05-10 | — | CO10354 |
| J & J Foods | Florence | 2003-08-28 | — | CO9328 |
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 127 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 5 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