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County approves Airport Ranches minor subdivision after floodplain memo added to record
Summary
The commission approved the four‑lot Airport Ranches minor subdivision after county staff added a previously omitted floodplain memo from the floodplain administrator to the record and included recommended conditions; commissioners accepted flood mitigation conditions and required final plat covenant language.
The Gallatin County Commission approved the Airport Ranches minor subdivision on July 29, after planning staff incorporated a floodplain memo from the county’s floodplain administrator into the record and confirmed recommended conditions were included in the staff report.
Sean O'Callaghan, the county’s floodplain administrator (joining by Zoom), confirmed his recommended conditions and covenants had been added to the staff recommended conditions and that his memo was now available for the commission to rely on for findings. Hayden College presented the project: a four‑lot residential minor subdivision south of Airport Road that will use a city fire hydrant and has been analyzed for flood hazards; the applicant indicated an intent to comply with the recommended conditions.
Applicant Kevin Cook summarized property history and the land swap with the airport that limited the parcel density; he said the applicant agrees to staff conditions. Commissioners discussed flood‑mitigation measures, shallow swales and culverts, and whether the mitigation would rely on off‑site features; O'Callaghan and applicant representatives clarified the mitigation locations and modeling.
A commissioner moved to approve the preliminary plat with staff and planning‑board recommended conditions, including the floodplain mitigation and a covenant to inform future property owners of potential risks related to canal infrastructure; the motion was seconded and passed. One commissioner reiterated concerns about the long‑term risk of shallow flooding despite professional modeling but supported the approval with conditions.
