State of North Carolina Statutes
The words defined in this section shall have the meanings indicated when used in this Part:
(1) "Undertaking" means the joint exercise by two or more units of local government, or the contractual exercise by one unit for one or more other units, of any power, function, public enterprise, right, privilege, or immunity of local government.
(2) "Unit," or "unit of local government" means a county, city, consolidated city-county, local board of education, sanitary district, facility authority created under Part 4 of this Article, or other local political subdivision, authority, or agency of local government.
Any unit of local government in this State and any one or more other units of local government in this State or any other state (to the extent permitted by the laws of the other state) may enter into contracts or agreements with each other in order to execute any undertaking. The contracts and agreements shall be of reasonable duration, as determined by the participating units, and shall be ratified by resolution of the governing board of each unit spread upon its minutes.
(e) Exceptions. – The requirements of this Article do not apply to:
(3) Purchases made through a competitive bidding group purchasing program, which is a formally organized program that offers competitively obtained purchasing services at discount prices to two or more public agencies.