What is a significant risk factor contributing to UST failure?

Corrosion of the tank material is a significant risk factor contributing to UST failure because it directly compromises the structural integrity of the tank. Over time, underground storage tanks that are made from metal are susceptible to corrosion, particularly if they are not properly maintained or if they are in contact with corrosive substances in the surrounding soil or groundwater. This deterioration can lead to leaks, which not only pose environmental hazards but also create safety risks such as groundwater contamination.

The issue of corrosion is exacerbated by factors like moisture in the soil, the presence of stray electrical currents, and the type of fuel stored in the tank. Addressing corrosion through regular maintenance and the use of protective coatings or sacrificial anodes is crucial for ensuring the longevity and safety of UST systems.

Other factors, while they can influence UST performance, do not pose as direct and significant a risk to the physical integrity of the tank itself as corrosion does. Weather conditions may have indirect effects, but they generally do not catalyze degradation of tank material in the same way. Inconsistent fuel supply might affect operational efficiency but does not inherently compromise the tank structure. Operator negligence is also important; however, negligence often leads to the effects of risks like corrosion becoming exacerbated rather than being a