California ICC UST Inspector Practice Exam

What substance is exempt from the upgrading requirement to double-walled tanks by December 22, 1998?

1. Solvents > 9 pH

2. Motor vehicle fuel

3. Used oil

4. Solvent tanks

The correct answer is: Motor vehicle fuel

Motor vehicle fuel is exempt from the requirement to upgrade to double-walled tanks by December 22, 1998. This exemption recognizes the specific regulations and standards that were established to address the environmental concerns associated with the storage of various substances. Motor vehicle fuel is commonly used and is subject to stringent regulatory oversight, leading to its classification that allows for certain exceptions regarding the upgrading of storage tank systems. The designation of motor vehicle fuel reflects its widespread usage and the existing regulations that already ensure a level of safety and environmental protection. Other substances, like solvents, used oil, and solvent tanks, generally have different risk profiles and regulations governing their storage that require more stringent measures, such as the double-walled technology, to prevent leaks and spills that could harm the environment. Therefore, the specific exemption for motor vehicle fuel indicates an understanding of its regulatory context and the measures in place to manage its safety more effectively.