How often must USTs be tested for tightness?

The answer indicating that USTs must be tested for tightness at least once every 2 to 3 years, depending on regulations, is correct because it aligns with federal and state regulations which dictate the frequency of testing for underground storage tanks. The exact interval can vary based on specific regulatory requirements in different jurisdictions, as well as the type of tank and its current condition.

Regular tightness testing is essential as it helps identify potential leaks early, which can prevent environmental contamination and protect groundwater resources. The 2 to 3-year timeframe allows for regular monitoring of tank integrity while acknowledging that this interval can be adjusted as necessary depending on the tank’s operation, maintenance history, and any incident that might indicate a risk of leaking.

Frequent and systematic testing, such as the proposed timeframe, is a best practice in UST management, ensuring compliance with regulations and maintaining environmental safety.