Nongovernmental organization means any organization that:
(1) Is organized for, and at all times since, the formation of the organization, and has been operated principally for one or more of the conservation purposes specified in clause (i), (ii), (iii), or (iv) of section 170(h)(4)(A) of the Internal Revenue Code of 1986;
(2) Is an organization described in section 501(c)(3) of that Code that is exempt from taxation under 501(a) of that Code; and
(3) Is described -
(i) In section 509(a)(1) or 509(a)(2) of that Code, or
(ii) Is described in section 509(a)(3) of that Code and is controlled by an organization described in section 509(a)(2) of that Code.