Above and Underground Leaking Storage Tanks Program

In the Navajo Way, "the Earth is our Mother", the mountains are part of her sacred body, the water courses her veins and arteries. When the Earth is injured, the resultant is instability, imbalance, and disharmony that bring illness upon all lives on Earth.


Program Mission Statement:

To ensure that the Underground Storage Tanks operating facilities that store and dispense petroleum comply with Navajo Nation Underground Storage Tank ACT 1998 and the Federal Underground Storage Tank regulatory requirements in 40 Code of Federal Regulations Part 280, and the Resource Concervation and Recovery ACT, as amended.

Project Goals:

Vision statement: With respect to Diné sovereign values, we envision Navajo Nation EPA, as a competent, efficient, sustainable environmental agency, which is committed to protecting Diné Health and the environment through utilizing partnerships, outreach, technology, restoration, waste regulatory compliance, enforcement, local presence, and modern environmental laboratory center.

Regulated Community:

The Navajo Nation EPA UST/Leaking UST Program inspects 133 operating UST facilities that include tribal, county, state, and federal facilities, hopitals, coalmines, power plants, educational, and small businesses.


What is an Underground Storage Tank?

Any one and/or combination of tanks (including underground pipers connected thereto, which is used to contain an accumulation of regulated substance, and the volume of which (including the volume of the underground pipes connected thereto) is 10% or more beneath the surface of the ground.

If the UST's are not in compliance or upgraded, the tanks may leak into the ground water, surface water or surface or subsurface soil causing harm to the public health and safety of the people and the environment.



Identify tank owners

Conduct compliance inspections

Support US EPA Federal Enforcement Activities and clean up of contaminated sites

Monitor tank removals, installations, upgrades, and sampling

Provide technical assistance and UST workshops'


Abandoned USTs

Contaminated groundwater

Multi UST ownership