Tex. Natural Resources Code § 134.144

(a) The commission is entitled to enter property adversely affected by past coal mining practices or other property necessary to have access to that property to do the things necessary or expedient to restore, reclaim, abate, control, or prevent the adverse effects if the commission:

(1) makes a finding of fact that:

(A) land or water resources have been adversely affected by past coal mining practices;

(B) the adverse effects are at a stage at which, in the public interest, action to restore, reclaim, abate, control, or prevent the adverse effects of past coal mining practices should be taken; and

(C) the owners of the land or water resources where entry must be made to restore, reclaim, abate, control, or prevent the adverse effects of past coal mining practices:

(i) are not known or readily available; or

(ii) will not permit this state or a political subdivision to enter the property to restore, reclaim, abate, control, or prevent the adverse effects of past coal mining practices; and

(2) gives notice by mail to the owners, if known, or, if not known, by posting notice on the premises and advertising once in a newspaper of general circulation in the county in which the land lies.

(b) The money expended for the work and the benefits accruing to the premises entered are chargeable against the land and mitigate or offset a claim for, or an action brought by an owner of an interest in the premises for, damages from the entry. This subsection does not create a new right of action or eliminate an existing immunity.