Council denies appeal to exceed airport-area density, citing 65 DNL noise contour and recent policy
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Summary
Boise City Council voted 3-1 to deny an appeal seeking to allow seven homes (about 7 units/acre) at 2701 South Pond Street, after planners and the airport director warned that portions of the lot fall within the FAA 65 DNL noise contour and that higher densities risk conflicts with federal grant assurances.
The Boise City Council on a 3-1 vote denied an appeal of a Planning & Zoning decision that sought permission to exceed the 5-units-per-acre limit in the Airport Influence Area B1 for a proposed seven-unit subdivision at 2701 South Pond Street.
Planning staff (Doug, S10) told the council the property falls partly inside the 65 DNL noise contour and recommended denial of the appeal; the planning team concluded the site could still be developed to meet airport-area standards but that allowing the higher density would not align with the airport compatibility findings in the code. Airport Director Rebecca Hub (S17) told the council the 65 DNL designation is used to identify areas the FAA considers not compatible with residential use and warned the city takes federal grant-assurance obligations seriously: “We expect to receive about $75,000,000 to reconstruct our runway,” she said, adding that accepting FAA funds brings requirements to prevent incompatible development.
The applicant’s representative, Anna Canning of Centurion Engineers (S13), argued the mapping and the contours cited in staff analysis were forecasted in the 2020 airport master plan and that only a small portion of the site (roughly 6,000 square feet) is inside the 65 DNL contour. Canning said the development team had planned noise mitigation measures — additional insulation, limits on uplighting and possible navigation easements — and apologized for prior confusion over how the 65 DNL line had been presented to the Planning & Zoning Commission: “I want to apologize for that,” she said.
Council members debated competing priorities: several members (motion maker, S5, and others) emphasized consistency with the council’s recent policy decisions on density around the airport and the need to protect airport operations and grant-assurance obligations. One council member (S11) urged creative redesign or relocation of units outside the contour, but acknowledged it might not “pencil” economically for the developer.
S5 moved to deny the appeal; S1 seconded. The clerk recorded the roll: Halliburton — yes; Morales — no; Stead — yes; Corliss — yes. The motion carried, 3 in favor, 1 opposed.
The council’s vote preserves the by-right limit of 5 units per acre in the Airport Influence Area B1 for this parcel; staff and the applicant indicated the developer could revise the proposal to comply with the existing density standard or pursue other design options and come back to the city for further review.
