As soon as such official plan has been prepared and adopted and is on file in the office of said district, the court, upon petition of the district, shall appoint a board of appraisers consisting of three members. The qualifications of said appraisers and all proceedings before them shall be in accordance with the provisions of the law pertaining to the duties and qualifications of appraisers under the conservancy law of Colorado as set forth in article 4 of this title; except that, where reference is made to districts, it shall apply to subdistricts organized under this article.L. 41: p. 879, § 13. CSA: C. 173B, § 68. CRS 53: § 149-9-13. C.R.S. 1963: § 150-8-13.