Tennessee Code Title 60. Oil and Gas § 60-1-704

(a) Upon satisfactory completion of regrading and revegetation of all disturbed areas except active work areas and access roads needed for oil or gas production, the supervisor shall release one third ( 1/3 ) of the reclamation bond. After plugging, and upon final reclamation and satisfactory survival of the vegetation through two (2) growing seasons, the supervisor shall release the remainder of the reclamation bond.

(b) For the purposes of this section, “active work area” means that portion of the initially disturbed area necessary for production-related equipment, materials and facilities, as determined by the supervisor.