Underground Storage Tank (UST) Operation and Maintenance | Region 10 | US EPA

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Underground Storage Tank (UST) Operation and Maintenance

This program is managed by

the Groundwater Unit of the Office of Compliance and Enforcement.

Photo of an installation of new underground storage tanks.

Installation of new underground storage tanks.

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To monitor compliance for federally regulated UST systems in the Pacific Northwest and Alaska, EPA follows this general approach:

Why Conduct UST Inspections?
During inspections and leaking underground storage tank (LUST) investigations, EPA has found that many UST systems are not being installed, operated or maintained properly, resulting in leaks to nearby soils and groundwater. Often times, equipment is found to be not functioning, broken or missing; therefore, many tank owners cannot detect leaks or spills or whether a piece of equipment has failed.

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Who Conducts Inspections in Region 10?
In Region 10, EPA Inspectors can inspect UST facilities in any state and does so periodically to assist a state, provide training or to conduct oversight. On Indian Lands, EPA, not the state, conducts inspections at UST facilities, which includes facilities on Indian reservations owned by non-Indians.

In Alaska, which has a Third-Party Inspection program, EPA performs periodic audits to ensure consistency and adequacy of the program. Alaska does not have state program approval from EPA. For more information on Alaska’s UST inspection program, visit the Alaska Department of Environmental Conservation (ADEC) web site. EPA Exit Disclaimer

In Idaho, the Idaho Department of Environmental Quality (IDEQ) and EPA are conducting inspections. In April 2008, IDEQ adopted rules for USTs, however, EPA has not yet given Idaho State program approval. For more information on the IDEQ program, visit the IDEQ web site.EPA Exit Disclaimer For more information on EPA’s inspection program in Idaho, contact Erik Sirs (sirs.erik@epa.gov), EPA Inspector and State Coordinator, at (208) 378-5762.

In Oregon, on September 16, 2011, EPA approved the Oregon Department of Environmental Quality (ODEQ) UST Program for UST facilities; therefore, ODEQ conducts inspections for UST facilities within Oregon except those within Indian Lands. For more information on the ODEQ program, visit the ODEQ web site. EPA Exit Disclaimer

In Washington, EPA has approved the Washington Department of Ecology (Ecology) UST program for UST facilities; therefore, Ecology conducts inspections for UST facilities within Washington except those within Indian Lands. For more information on Washington’s UST inspection program, visit the Washington Department of Ecology web site. EPA Exit Disclaimer

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Note: For UST inspections conducted by the state, contact your applicable state agency. To find out who to contact, visit our UST EPA and State Contacts listings.

What Tanks are Inspected?
All currently in use and temporarily out of use UST systems that are federally regulated may be inspected.

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How Can I Prepare for an EPA Inspection?

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What Happens During an EPA Inspection?
Usually, an EPA Inspector will contact the owner / operator of an UST facility within a week or two beforehand to schedule an inspection. However, EPA periodically conducts unannounced inspections as well. During the inspection, the EPA Inspector will determine whether you are operating and maintaining your UST system in compliance with federal UST regulations. The EPA Inspector will examine your records, including documentation pertaining to financial responsibility (e.g. insurance documents), release detection, any repairs or upgrades that you have had performed on your UST system, and cathodic protection / tank lining (if applicable). The EPA Inspector also will examine your UST system itself, including the tank, piping, dispensers, overfill and spill protection equipment, release detection equipment, and corrosion protection equipment (if applicable). The EPA Inspector will ask the operator and their employees questions to determine whether they understand how to operate and maintain the UST system and whether they know what to do in the event of an emergency (i.e. an alarm sounding, a spill).

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What Happens if the EPA Inspector Finds Something Wrong?
Depending on the severity and nature of the violation, an EPA Inspector could issue the owner / operator an enforcement action that requires the owner / operator to correct the violation within a certain time period and may involve a monetary fine. Any serious noncompliance issues may be referred for formal enforcement. Pursuit of these violations is at the discretion of the EPA UST / LUST Program and the Department of Justice. For further information, visit our Enforcement page.

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If you are installing, changing-in-service or closing an UST system, you should notify appropriate authorities at least 30 days before doing so. (Note: Some agencies require prior notification and/or permits. Check with the appropriate agency.) If installing a new system, the proper authorities will add it to their operating UST facilities list; likewise, if closing an UST system, they will remove it from this list after proper closure. Also, by notifying appropriate authorities, it will give an UST Inspector an opportunity to visit your facility while the work is being conducted to assist you in the process and answer any questions that you may have.

Our goal is to ensure that UST systems are installed, operated, maintained and closed safely, and in compliance with UST regulations, to prevent harm to others and the environment. We are here to assist you so that you can start operation of your UST system on the right foot. Likewise, we can provide you assistance so that you can close out your UST system properly, in accordance with UST regulations, the first time round.

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Who Should I Contact? What Should I Do?
In EPA Region 10, the appropriate authority to notify for UST installations and closures is based on whether or not your facility is located on Indian Lands.

If your facility is NOT on Indian Lands, you should contact your appropriate state agency that regulates UST installations and closures. States have various notification requirements, including submitting written notifications, obtaining permits, finding out the minimum time for submittals and submitting site assessment reports for UST closures. Check with your state agency.

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If your facility is on Indian Lands, including sites on Indian reservations owned by non-Indians -

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You can contact either a state or federal UST inspector at any time to answer any questions that you may have pertaining to your UST system and UST regulations. Additional information about various UST operation and maintenance issues, including insurance, release detection, release prevention, installation, change-in-service, and closures is available in our Information Resources listing. For compliance assistance, please view our UST Compliance Assistance website.

Note: If your facility is not on Indian Lands, then it is recommended that you contact the State UST inspector for your state for answers to your questions. To find out who to contact, visit the State section of our UST EPA and State Contacts listings.

Short URL for this page: http://www.epa.gov/r10earth/ust.htm

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URL: https://yosemite.epa.gov/R10/WATER.NSF/UST/UST+O&M

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