It may take you several days or weeks to complete your material compatibility review of all the components of your UST system(s).
If you own multiple UST systems it is likely that they may have similar or the same components. If a component is not compatible for one UST system, there may be a strong likelihood that it is also not compatible with the other UST systems that store the same or similar product(s).
Consequently, the time you spend on determining compatibility of UST components is more than worth the cost of having to clean up one or more major releases of product to the environment. These would be releases that are the result of the pre-mature failure(s) of component(s) due to its’ incompatibility with the product stored in those UST systems.