At the time set for such hearing, the commission shall examine the petition and hear objections thereto and may order changes in the boundaries thereof by the inclusion or removal of land therefrom upon finding that such change would be hydrologically, geologically, and geographically sound. The action of the commission may be reviewed by the district court in appeal proceedings filed within twenty days after its decision has been announced, which decision shall be announced within ninety days after the hearing.
C.R.S. § 37-90-123