(A) Prior to abandoning class I wells, the well shall be plugged with cement in a manner which will not allow the movement of fluids either into or between underground sources of drinking water.
(B) Placement of the cement plugs shall be accomplished by one of the following:
(1) The balance method;
(2) The dump bailer method;
(3) The two-plug method; or
(4) An alternative method approved by the director, which will reliably provide a comparable level of protection to underground sources of drinking water.
(C) The well to be abandoned shall be in a state of static equilibrium with the mud weight equalized top to bottom, either by circulating the mud in the well at least once or by a comparable method prescribed by the director, prior to the placement of the cement plug(s).
(D) (1) Class I hazardous waste wells subject to standards for existing facilities, Chapters 3745-65 to 3745-69 of the Administrative Code, shall comply with:
(b) Rules 3745-66-17 to 3745-66-20 of the Administrative Code for post-closure care; and
(2) Class I hazardous waste wells subject to standards for new facilities, Chapters 3745-54 to 3745-57 of the Administrative Code, shall comply with:
Eff 12-15-82; 7-25-84
Rule promulgated under: RC Chapter 119.
Rule amplifies: RC 6111.043