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Board questions sewer allocation, density and floodplain constraints during annexation reviews
Summary
During two annexation cases board members pressed staff on sewer allocation thresholds (600 gpd), county vs. town density rules (county LDR at 1 unit/acre; town RM 2–3 units/acre) and flood-zone/stream buffer impacts; staff gave numerical thresholds and site-specific assessments.
Board members used the annexation presentations to probe technical constraints that will affect potential development yield and utility connections.
On sewer allocation, staff said a single home would be under the 600-gallons-per-day threshold and typically would not require the council to grant sewer allocation. Members asked whether the land "perks" for septic; staff said that question remains site-specific but noted the 600-gpd threshold as a practical guidance for sewer permitting.
On density, staff contrasted county low-density-residential (LDR) rules allowing roughly one home per acre with the town's RM designation that can translate to two to three units per acre under the land-use plan; staff emphasized parcel size and physical constraints make multiunit development unlikely on the 0.47–0.5-acre lots discussed. Floodplain and a 55-foot stream buffer were cited as additional constraints on developable area.
Members pressed staff on how annexation and voluntary group annexations would be processed, and staff said a group application could be processed as a single application if multiple property owners request annexation; fee and tax consequences would follow annexation (county taxes vs. town taxes and different utility rates).
