What type of testing must be performed on USTs at least every three years?

Line leak detector testing and monitoring system evaluations are crucial for ensuring the integrity and safety of underground storage tanks (USTs). This type of testing is mandated to be performed at least every three years to detect any potential leaks from the tanks into the surrounding environment.

Regularly assessing leak detection systems helps maintain compliance with environmental regulations and protects against groundwater contamination. These evaluations check the accuracy and functionality of both automatic and manual line leak detectors to ensure they can identify leaks at predetermined thresholds.

While regular fuel quality tests and visual inspections for corrosion play important roles in the overall maintenance of USTs, they do not specifically focus on leak detection systems or the monitoring of fuel lines, which are critical for environmental safety. Tank replacement assessments are related to tank condition but do not occur on a fixed schedule like the testing of leak detectors and monitoring systems, which are required every three years to uphold safety standards.