California ICC UST Service Technician Practice Exam 2026 - Free UST Technician Practice Questions and Study Guide

The responsibility for implementing the regulations found in Title 23 primarily falls to the local agencies, commonly known as Certified Unified Program Agencies (CUPAs). These local entities serve as the primary regulatory authority for underground storage tanks (USTs) within their jurisdictions. Their roles include overseeing compliance with the regulations, conducting inspections, and enforcing the standards set forth in Title 23, which encompasses leak prevention, monitoring procedures, and operator training requirements.

Local agencies are uniquely positioned to address specific community needs and conditions, enabling them to enforce regulations effectively at a local level. This localized approach ensures that the regulations are applied in a way that considers regional characteristics and public safety.

While federal and state governments establish overarching policies, and the Environmental Protection Agency (EPA) provides guidance and frameworks, it is primarily the responsibility of local agencies to implement and enforce the rules in Title 23.