Within 90 days from the date the complete petition is filed, the Sanitary Commission shall decide on the petition. In deciding on a petition, the Sanitary Commission may designate a shared facility area if the Sanitary Commission finds that: The proposed shared facility is necessary for the public health, safety, and welfare of the residents of Dorchester County who would be affected by the proposed shared facility; and It is feasible: To construct the proposed shared facility; and To establish the proposed shared facility area. If the Sanitary Commission denies the petition, the petitioners, within 30 days after the denial, may appeal to the Dorchester County Commissioners. The Dorchester County Commissioners: Shall determine whether the proposed shared facility meets the applicable standards of this section; and May affirm, modify, or reverse the decision of the Sanitary Commission. When a petition is approved by the Sanitary Commission or the Dorchester County Commissioners, the Sanitary Commission shall: Adopt a resolution that: Provides for construction of the shared facility; and Designates the boundaries of the shared facility area; and File the resolution among the Dorchester County land records.