Alaska Admin. Code tit. 20, § 25.1300 – Class VI well plugging

(a) The storage operator shall, before plugging a Class VI well, flush the well with a buffer fluid, determine bottomhole reservoir pressure, and perform a final external mechanical integrity test.
(b) The storage operator shall prepare, maintain, and comply with a well plugging plan that is acceptable to the commission. The requirement to maintain and implement a commission-approved plan is directly enforceable regardless of whether the requirement is a condition of the storage facility permit. The storage operator shall submit the well plugging plan as part of the permit application and shall include the following information:
1. (1) appropriate tests or measures for determining bottomhole reservoir pressure;
2. (2) appropriate testing methods to ensure external mechanical integrity as specified in 20 AAC 25.1240;
3. (3) the type and number of plugs to be used;
4. (4) the placement of each plug, including the elevation of the top and bottom of each plug;
5. (5) the type, grade, and quantity of material to be used in plugging; the material must be compatible with the carbon dioxide stream; and
6. (6) the method of placement of the plugs.
(c) The storage operator shall notify the commission in writing pursuant to 20 AAC 25.1610, at least 60 days before plugging a Class VI well, although the commission may allow for a shorter notice period. At the time of notification under this section, the storage operator shall, if any changes have been made to the original well plugging plan submitted as part of the storage facility permit application, provide the revised well plugging plan. Any amendments to the Class VI well plugging plan must be approved by the commission, must be incorporated into the storage facility permit, and are subject to the permit modification requirements at 20 AAC 25.1410 or 20 AAC 25.1430 as appropriate.
(d) Within 60 days after plugging, the storage operator shall submit, pursuant to 20 AAC 25.1610, a plugging report to the commission. The report shall be certified as accurate by the storage operator and by the person who performed the plugging operation if other than the storage operator. The storage operator shall retain the well plugging report for not less than 10 years following project completion. Upon project completion, the storage operator shall furnish the records under this subsection to the commission.