What condition allows for waiver of visual monitoring requirements?

Waiving visual monitoring requirements is typically allowed under specific conditions, and one such condition is when the facility is located underground. Underground tanks or storage systems often present unique challenges for consistent visual monitoring, such as restricted access and safety concerns. Therefore, regulatory bodies recognize the limitations of visually monitoring underground installations and may permit a waiver in such scenarios, relying instead on alternative monitoring methods or technologies.

In contrast, other options do not align with established criteria for waiving visual monitoring requirements. A new tank, regardless of its condition, would still typically require monitoring until proven leak-free. Frequent staffing of a facility does not necessarily negate the need for visual monitoring, as human presence doesn't guarantee that monitoring will be conducted consistently. Lastly, the completion of an inspection does not inherently give grounds for a waiver; ongoing monitoring is essential to ensure continued compliance and safety throughout the operational life of any tank or facility.