Staff recommends amending design standards manual to align stormwater threshold with state code
Jan 21, 2026
Planning staff proposed initiating a DSM text amendment to raise the stormwater conversion threshold from 10,000 sq ft to match state code (up to 1 acre), citing burdens from over-design, maintenance and inspection on small developments.
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Staff presented a proposed amendment to the county’s Design Standards Manual (DSM) at the Jan. 21 work session to make the county’s stormwater conversion threshold consistent with state code. Staff said the current DSM applies a 10,000-square-foot conversion threshold while state rules allow up to one acre; the mismatch has required smaller developments to design larger stormwater facilities and increased maintenance and inspection burdens.
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