UST Check → counties → Arizona → Apache
Underground storage tanks & leak sites in Apache County, AZ
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.
249registered tank facilities
137open tanks
585closed tanks
176leak incidents on record
17cleanups still open
17 leak cleanups in
Apache 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 |
|---|---|---|---|---|
| GIANT FOUR CORNERS # 107 dba CONOCO | Many Farms | 6 / 0 | Open UST(s) | NAV012 |
| GIANT FOUR CORNERS 108 dba CONOCO AKA FT DEFIANCE FINA #108 | Fort Defiance | 4 / 5 | Open UST(s) | NAV052 |
| CHEVRON CHINLE | Chinle | 4 / 4 | Open UST(s) | NAV147 |
| RED MESA 501 (FORMERLY THRIFTWAY 501) | Red Mesa | 4 / 1 | Open UST(s) | NAV125 |
| MUSTANG GAS aka GIANT #3106 aka ROCK POINT TRADING POST | ROCK POINT | 4 / 0 | Open UST(s) | NAV206 |
| NAVAJO FLEET MANAGEMENT | Window Rock | 3 / 9 | Open UST(s) | NAV010 |
| SPEEDYS TRUCK STOP | Lupton | 3 / 7 | Open UST(s) | NAV001 |
| CHIEFTAIN MOBIL | CHAMBERS | 3 / 6 | Open UST(s) | AZ0-002745 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| 24 HOUR GAS-N-GO | SAINT JOHNS | 2019-06-05 | Gasoline (UL),Gasoline (PUL),Diesel | AZ0-007460-3491.02 |
| APACHE COUNTY - ROAD DEPARTMENT | SAINT JOHNS | 1991-01-31 | Gasoline | AZ0-000772-279.02 |
| SHORTSTOP MARKET | EAGAR | 1986-12-26 | Gasoline | AZ0-000825-258.01 |
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 249 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 17 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