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Lacey Planning Commission reviews water and sewer guideline updates, flags limits on STEP systems and ADU impacts
Summary
The Planning Commission reviewed draft changes to Lacey's development guidelines for water and sewer that would tighten cover and material standards, require valves on larger service lines, set a 15% cost threshold for septic‑to‑sewer exceptions and recommend limits on new STEP/grinder systems as ADU rules expand.
The Lacey Planning Commission on Jan. 22 reviewed proposed revisions to the city’s development guidelines for water and sewer infrastructure that staff say are aimed at improving system reliability and clarifying requirements for new accessory dwelling units (ADUs).
Tom (city presenter) told commissioners the draft would allow occasional reductions to the standard 42‑inch cover over water mains with public works director approval, provided ductile‑iron pipe is used in shallow segments. "So with approval of the public works director, you will be able to perhaps reduce the cover over a line," Tom said, adding that ductile iron is specified where strength is required and that cost tradeoffs mean PVC will still be common for many projects.
The draft also would require valves on service lines 2 inches and larger so crews can isolate large commercial or industrial services, and it would formalize procedures for temporary blow‑offs and end‑of‑main…
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