If the conditions of subdivision 8-1-8(1), (2), or (3) are met, the board of county commissioners must hold a public hearing to consider the proposed organization, reorganization, division, or merger. The hearing may be conducted in conjunction with a regularly scheduled meeting of the board of county commissioners. At least twenty days before the hearing, the board of county commissioners shall publish notice of the hearing in the official newspapers of the county and shall send the notice to the township clerk and to each member of the board of supervisors of the affected townships.
SDCL 8-1-9