SDCL § 36-9-9: Terms of office of board members--Appointment.

The term of office for each member of the board is three years and expires on October thirtieth. Each member shall serve until a successor has been appointed and qualified. No member may be appointed to more than three consecutive full terms. However, appointment of a person to an unexpired term is not considered a full term for this purpose.

At the expiration of a term, or if a vacancy occurs, the Governor shall appoint a new board member. The Governor may stagger terms to enable the board to have different terms expire each year.

The appointee's term expires on October thirtieth in the third year of appointment.