24 C.F.R. § 50.10 Basic environmental responsibility.
(a) It is the responsibility of all Assistant Secretaries, the General Counsel, and the HUD approving official to assure that the requirements of this part are implemented.
(b) The Assistant Secretary for Community Planning and Development (A/S CPD), represented by the Office of Community Viability, whose Director shall serve as the Departmental Environmental Clearance Officer (DECO), is assigned the overall Departmental responsibility for environmental policies and procedures for compliance with NEPA and the related laws and authorities. To the extent permitted by applicable laws and the CEQ regulations, the A/S CPD shall approve waivers and exceptions or establish criteria for exceptions from the requirements of this part.