Arizona Hazardous Waste Tanks regulations & environmental compliance analysis

Arizona Hazardous Waste Tanks: What you need to know

Governing Law and Regulations

Hazardous waste tank requirements: Arizona Administrative Code Rules (AZ Admin. Code R) 18-8-264(A) and AZ Admin. Code R 18-8-265(A) (interim status)

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Federal organic air emissions rules: AZ Admin. Code R 18-8-264(A) and AZ Admin. Code R 18-8-265(A) (interim status)

Underground hazardous waste tanks: AZ Admin. Code R 18-8-265(N) (interim status)

Regulatory Agency

Arizona Department of Environmental Quality (ADEQ) Waste 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 has adopted by reference the federal hazardous waste tank requirements, with an additional requirement for interim-status underground hazardous waste storage tanks that have not yet met the required secondary containment standards. Arizona also follows the federal organic air emissions standards for tanks that store or treat hazardous waste. In addition, owners and operators of hazardous waste treatment, storage, and disposal facilities (TSDFs) that use tanks for hazardous waste must comply with additional permit application requirements and pay several state fees.

Administration and enforcement. ADEQ's Waste Programs Division administers and enforces the hazardous waste tank requirements in Arizona.

State Requirements


AZ Admin. Code R 18-8-265(N)

Generators and owners and operators of interim-status underground hazardous waste tanks and associated piping systems whose secondary containment systems are not yet retrofitted to the standards set forth at 40 CFR 265.193 must ensure that:

  • A level is measured daily.
  • A material balance is calculated and recorded daily.
  • A yearly ...

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More on this topic:

Governing Law and Regulations
Regulatory Agency
Comparison: State vs. Federal
State Requirements