UST Check → counties → Minnesota → Cass
Underground storage tanks & leak sites in Cass County, MN
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.
226registered tank facilities
170open tanks
493closed tanks
98leak incidents on record
7cleanups still open
7 leak cleanups in
Cass 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 |
|---|---|---|---|---|
| Chee Wa Ka E Gon Gift Shop | Cass Lake | 5 / 9 | Open UST(s) | LLBO5007 |
| Orton's Y Mart | Walker | 4 / 3 | Open UST(s) | LLBO5032 |
| Palace Junction | Cass Lake | 4 / 1 | Open UST(s) | LLBO5071 |
| Northern Lights Express | Walker | 3 / 0 | Open UST(s) | LLBO5076 |
| J & L Oil Co. | Cass Lake | 2 / 6 | Open UST(s) | LLBO5005 |
| Cass Lake Mini Mart | Cass Lake | 2 / 4 | Open UST(s) | LLBO5021 |
| Four Seasons Resort | Bena | 2 / 3 | Open UST(s) | LLBO5019 |
| McArdles Resort | Bena | 2 / 3 | Open UST(s) | LLBO5020 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| Leech Lake Market (FKA: Teal's Market; Teals Inc) | Cass Lake | 2024-09-23 | Gasoline (containing <=10% ethanol) | R5-0436 |
| Big Winnie Store RV Park & Campground (FKA: Winnibigoshish Resort; Winnibigoshish Resort; & Winnie Store Bena Standard) | Bena | 2023-08-22 | Unknown Petroleum | R5-0433 |
| Brindleys Harbor Resort | Walker | 2021-12-21 | Gasoline Containing >10% Ethanol | R5-0428 |
| Four Seasons Resort | Bena | 2021-07-07 | Diesel; Gasoline (containing <=10% ethanol) | R5-0413 |
| Anderson's Horseshoe Bay Lodge (Horseshoe Bay Lodge, Horseshoe Bay/Pioneer Inn) | Walker | 2019-04-30 | Unknown Petroleum | R5-0407 |
| Nicholson Transportation Co | Backus | 2016-08-16 | Other | MNLS0020174 |
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 226 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 7 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