How frequently must USTs be inspected in Washington State?

Underground Storage Tanks (USTs) in Washington State are required to be inspected at least every three years to ensure compliance with environmental regulations and safety standards. This inspection frequency is critical for identifying potential leaks or structural issues that could pose a risk to the environment and public health. Inspections help in assessing the integrity of the tank and its components, including the piping and ancillary equipment, which enables facility operators to take necessary actions to prevent contaminations.

Regular inspections aid in maintaining operational compliance with state and federal regulations, which require timely identification and correction of any issues to minimize risks associated with fuel storage. The three-year interval strikes a balance between proactive monitoring and resource management, ensuring that facilities remain vigilant without being overly burdensome.