Governing Law and Regulations
Arizona Department of Environmental Quality (ADEQ) Water Quality Division
ADEQ Tank Programs Division
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Arizona generally follows the federal Environmental Protection Agency's (EPA) federal leak detection rules for containers, hazardous waste storage tanks, landfills, and surface impoundments. Arizona has some specific requirements for leak detection for underground storage tanks (USTs), concentrated animal feeding operations (CAFOs), and motor fuel dispensing facilities. See the national section LEAK DETECTION for a discussion of federal leak detection requirements. In addition, refer to the state section RELEASE NOTIFICATION to review Arizona's leak response and reporting requirements.
• Administration and enforcement. ADEQ's Water Quality Division administers and enforces the leak detection rules in Arizona for CAFOs and motor fuel dispensing facilities. ADEQ's Tank Programs Division is responsible for leak detection requirements for owners and operators of USTs in Arizona.
AZ Admin. Code R 18-12-240 to R 18-12-245
An effective leak detection program establishes standards, including system design, for preventing spills, releases, and unnecessary contamination. All UST systems must meet the following general leak detection requirements:
- The ability to detect a release from any portion of the tank and connected piping