Sec. 8. The following shall serve as voting members of the commission:
(1) Each member of the county executive for a participating county.
(2) The executive director or, if a county does not have an executive director, the chairman of a soil and water conservation district that:
(A) is subject to IC 14-32;
(B) includes territory in a participating county; and
(C) includes territory in the basin.
(3) The county surveyor of each participating county.