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Toxics Cleanup Program Policy 900: Underground Storage Tank (UST) Enforcement

Publication number Date Published
92-09-001September 1992
VIEW NOW Toxics Cleanup Program Policy 900: Underground Storage Tank (UST) Enforcement (Number of pages: 3) (Publication Size: 118KB)
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Author(s) Toxics Cleanup Program
Description The Underground Storage Tank (UST) program was created to prevent leaks and spills and to provide for early detection of leaks from USTs in order to protect human health and the environment. This policy provides direction to Washington State Department of Ecology staff for enforcing the UST regulations, Chapter 173-360A WAC. Find additional UST guidance available at

REVISION NOTE: This policy became effective in September 1992. In September 2018, we formatted the document, updated the Americans with Disabilities Act (ADA) language, and cataloged it in Ecology’s publications database. With the exception of ADA language, the content of this policy did not change.
The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

ADA Accessibility
The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188.
Visit Ecology’s website for more information.
Contact Policy & Technical Support Unit and Underground Storage Tank Coordinator at 360-407-7170
Keywords Underground Storage Tank UST, UST Regulations (Chapter 173-360A WAC), UST Rule (Chapter 173-360A WAC), Model Toxics Control Act (MTCA), enforcement
WEB PAGE Policies and guidance for site cleanups

Underground Storage Tank Regulations and Statute

Toxics Cleanup Program Policy 920: Providing Public Participation In Underground Storage Tank (UST) Settlements

Toxics Cleanup Program Policy 930: Investigation of and Responses to Complaints of Underground Storage Tank (UST) Violations