If the wind energy developer makes a search with reasonable diligence, and the whereabouts of a party entitled to any notice described in this subsection cannot be ascertained or such notice cannot be delivered, then an affidavit attesting to such diligent search for the parties shall be placed in the records of the county clerk where the surface estate is actually located.
The notice shall contain a map or plat of the proposed location, with sufficient specificity of all of the various elements of the wind energy facility to be located on the governmental section which includes all or any part of the tracts of land described in paragraphs 1, 2 and 3 of this subsection and the approximate date that the owner of the wind energy facility proposes to commence construction. If the wind energy developer makes a search with reasonable diligence, and the whereabouts of a party entitled to any notice described in this subsection cannot be ascertained or such notice cannot be delivered, then an affidavit attesting to such diligent search for the parties shall be placed in the records of the county clerk where the surface estate is actually located. Within thirty (30) days of receiving such notice, any operator, as described in paragraphs 1, 2 and 3 of this subsection shall reciprocate, in writing by certified mail, certain site, operational and infrastructure information, with sufficient specificity, to be shared with the owner of the wind energy facility to assist both with the safe construction and operation pertaining to the surface estate. This information should include American Land Title Association (ALTA) surveys of existing subsurface and surface improvements on the property, if any, as well as other technical specifications for existing improvements such as pipe size, material, capacity and depth.
Okla. Stat. tit. 17, § 160.21