County engineering proposes standardized drainage reports and refundable deposit for plats

Oct 6, 2026

Public works proposed requiring drainage reports for preliminary plats (4+ lots), standardized assumptions for impervious cover by lot size, inspection requirements, and a refundable deposit (staff suggested $1,000) to cover repeated resubmissions and reviews.

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Curtis Mader presented recommended engineering and subdivision regulation updates to standardize drainage analyses for preliminary plats. He proposed clear assumptions for impervious area by lot size, use of NOAA Atlas precipitation data for consistency, required drainage reports at preliminary plat submission (4 lots or more), and associated inspection steps. The goal is to reduce iterative resubmissions and provide predictable standards for developers and county reviewers.

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