Colo. Rev. Stat. § 37-48-140
Any property owner may accept the appraisals of benefits as made by the appraisers and shall be construed to have done so unless, within ten days after the last publication provided for in section 37-48-139, he has filed exceptions to said report or to any appraisal of benefits. All exceptions shall be heard by the court, beginning not less than twenty days nor more than thirty days after the last publication provided for in section 37-48-139, and determined in advance of other business so as to carry out, liberally, the purposes and needs of the subdistrict. The court may, if it deems necessary, return the report to the board of appraisers for its further consideration and amendment and may enter its order to that effect. If, however, the appraisal roll as a whole is referred back to the appraisers, the court shall not resume the hearing thereon without new notice, as for an original hearing thereon; but the court may, without new notice, order the appraisers to revise and amend the roll when the order of the court specifies the changes to be made.
C.R.S. § 37-48-140