What is the maximum capacity of a tank to be classified as a UST in Pennsylvania?

In Pennsylvania, a tank must have a capacity of 110 gallons or more to be classified as an Underground Storage Tank (UST). This specific regulation aligns with federal guidelines, which define USTs as any tank that can hold at least 110 gallons of petroleum products or certain hazardous substances. This classification is important because USTs are subject to stringent regulatory requirements aimed at preventing leakages that can cause environmental contamination.

Understanding this threshold helps both compliance and environmental protection efforts, as it clearly establishes which tanks fall under regulatory oversight. Tanks with capacities below this amount, therefore, do not fall into the UST category and are often regulated differently or not at all.