Ariz. Admin. Code § 18-9-B615

Current through Register Vol. 30, No. 50, December 13, 2024

Section R18-9-B615 - Transitioning from Class II to Class VI Injection Well

A. Owners and operators that are injecting carbon dioxide for the primary purpose of long-term storage into an oil and gas reservoir must apply for and obtain a Class VI geologic sequestration permit when there is an increased risk to the USDWs compared to Class II operations. In determining if there is an increased risk to USDWs, the owner or operator must consider the factors specified in subsection (B) of this Section.

B. The Director shall determine when there is an increased risk to USDWs compared to Class II operations and a Class VI permit is required. In order to make this determination the Director shall consider the following:

1. Increase in reservoir pressure within the injection zone or zones;

2. Increase in carbon dioxide injection rates;

3. Decrease in reservoir production rates;

4. Distance between the injection zone or zones and USDWs;

5. Suitability of the Class II area of review delineation;

6. Quality of abandoned well plugs within the area of review;

7. The owner's or operator's plan for recovery of carbon dioxide at the cessation of injection;

8. The source and properties of injected carbon dioxide; and

9. Any additional site-specific factors as determined by the Director.

Ariz. Admin. Code § R18-9-B615

New Section made by final rulemaking at 28 A.A.R. 1903, effective 9/6/2022.