Utah Code Ann. § 17C-2-206
(2) To amend an adopted urban renewal project area budget, the agency shall:
(4) If the removal of a parcel under Subsection 17C-2-110(4)(a)(ii) reduces the base taxable value of the project area, an agency may amend the project area budget to conform with the new base taxable value without:
(6)
(b) A person who fails to contest a budget amendment under Subsection (6)(a):
(ii) may not contest: