Tex. Transportation Code § 202.061

(a) The commission may enter into an environmental covenant for the purpose of subjecting real property in which the department has an ownership interest to a plan or the performance of work for environmental remediation if the plan or work performed is first approved by the Texas Commission on Environmental Quality or a federal agency with the authority to approve the plan or work under the applicable laws and regulations.

(b) The environmental covenant must:

(1) contain a legally sufficient description of the property subject to the covenant;

(2) describe the nature of the contamination on or under the property, including the contaminants, the source, if known, and the location and extent of the contamination; and

(3) describe the activity and use limitations on the property.

(c) The plan or performance of work for environmental remediation must:

(1) meet applicable state and federal standards for environmental remediation; and

(2) bring the property into compliance with zoning or land use controls imposed on the property by each applicable local government.

(d) For each property for which the commission may enter into an environmental covenant, the commission by order may authorize the executive director to execute an environmental covenant on behalf of the commission. Not less than 30 days before the date the commission considers a proposed order under this subsection, the commission must mail to each owner of a property interest in the applicable property, each adjacent landowner, and each applicable local government a notice that includes a clear and concise description of the proposal to enter into the environmental covenant and a statement of the manner in which written comments may be submitted to the commission.