Kan. Stat. § 19-2899
After receipt of the engineering report and recommendations about acquisition of additional park land, if any, such board of county commissioners and county park board of commissioners shall jointly confer and study the engineering report and recommendations obtained to determine most feasible and practical plan, which if approved by such board of county commissioners, including enlargement of the park, if so recommended, the board of county commissioners are empowered to appoint competent appraisers to appraise value of land needed for the county park and conduct negotiations within obtained appraised value, for ninety (90) day options to purchase additional land for park purposes. If any tract or tracts of land cannot be purchased at or within appraised value, the board of county commissioners is hereby authorized to exercise right of eminent domain in the manner as authorized by laws of Kansas within one (1) year.
K.S.A. 19-2899