Must tanks less than 10,000 gallons installed after April 11, 2016 meet the secondary containment requirement?

Tanks that are less than 10,000 gallons and were installed after April 11, 2016, are generally not required to meet the secondary containment requirement under federal regulations. The regulatory framework primarily addresses secondary containment for larger tanks, specifically those with capacities of 10,000 gallons or more, due to their potential risk to the environment if they leak. This exemption allows for more flexibility for smaller tanks, particularly if they are used in less hazardous contexts.

It's important to recognize that although federal standards provide a baseline, individual states have the authority to implement stricter regulations as needed. Therefore, while the federal rule exempts these smaller tanks from secondary containment requirements, some state regulations may impose additional requirements regardless of the tank size or the date of installation.