What is an important factor to consider when selecting UST materials?

When selecting materials for an underground storage tank (UST), compatibility with the stored substance is paramount. This consideration ensures that the material used for the tank does not react adversely with the product being stored, which could lead to degradation of the tank itself, leaks, or contamination of the stored substance. Different stored liquids may have varying chemical properties, and materials that are ideal for one substance may not be appropriate for another. For instance, certain plastics may be suitable for gasoline but not for diesel fuel or aggressive chemicals.

Incompatibility can result in significant safety hazards, environmental issues, and costly remediation efforts, thus making it critical to choose materials that are proven to withstand the specific chemicals involved. This compatibility ensures the longevity and safety of both the storage tank and the surrounding environment.