Underground Storage Tank (UST) Designated Operator A Certification Practice Test 2025 - Free UST Practice Questions and Study Guide

Question: 1 / 400

Is temporary closure allowed indefinitely for UST systems meeting 40 CFR part 280?

Yes

The correct response indicates that temporary closure for UST systems is permitted indefinitely, provided that the systems meet the requirements outlined in 40 CFR Part 280. This regulation governs the management of underground storage tanks to ensure environmental protection.

When a UST is temporarily closed, it must comply with certain conditions, including proper maintenance and monitoring to prevent leaks and environmental hazards. However, as long as the UST owner adheres to these guidelines and continues to meet regulatory requirements, there is no specific limit on the duration of temporary closure. This allows flexibility for owners to retain their systems during times when they may not be in active use.

While it’s crucial for UST systems to be inspected and maintained even during temporary closure, the regulations do provide leeway for indefinitely maintaining such a status, thereby addressing circumstances where continued operations may not be viable or necessary. This understanding is essential for operators managing UST systems, allowing them to make informed decisions about the status of their tanks while remaining compliant with federal regulations.

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No

Only for certain tanks

Yes, but with restrictions

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