Which type of tank does not meet the title 23 requirements for secondary containment?

The correct answer is laminated tanks because they lack the necessary features for secondary containment as outlined in Title 23 regulations. Title 23 standards are designed to safeguard against possible leaks and spills that can contaminate the environment. Secondary containment systems are essential for providing an extra layer of protection, typically involving double walls or other structures capable of holding leaks from the inner tank.

Laminated tanks do not have the structural integrity or design features seen in double-walled tanks or membrane-lined tanks, which are specifically engineered to contain leaks and prevent environmental contamination. Vaulted tanks, double-walled tanks, and membrane-lined tanks all include provisions for secondary containment, thereby meeting the required regulations. In contrast, laminated tanks do not possess these critical containment attributes, making them noncompliant with the Title 23 requirements.