N.C. Gen. Stat. § 106-923
Whenever the Commissioner, or his agent, determines that there exists an infestation of forest insect pests or an infection of forest tree diseases, injurious or potentially injurious to the timber or forest trees within the State of North Carolina, and that said infestation or infection is of such a character as to be a menace to the timber or forest growth of the State, the Commissioner shall declare the existence of a zone of infestation or infection and shall declare and fix boundaries so as to definitely describe and identify said zone of infestation or infection, and the Commissioner or his agent shall give notice in writing by mail or otherwise to each forest landowner within the designated control zone advising him of the nature of the infestation or infection, the recommended control measures, and offer him technical advice on methods of carrying out controls.
N.C. Gen. Stat. § 106-923