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Shelton staff present comprehensive draft update to engineering design and construction manual
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Summary
Public works reviewed a draft update to the city's Engineering Design & Construction Manual covering administrative precedence, presubmission conferences, plan-review timelines, safety enforcement, transportation and utilities standards; staff sought council input before finalizing the draft.
Public works staff presented highlights of a draft 2026 update to Shelton's Engineering Design & Construction Manual at the March 24 council study session. The update covers administrative procedures, order of precedence among standards, presubmission conference processes, transportation criteria, and multiple utility and construction standards.
Public works director summarized that the manual will add references to contemporary design manuals, establish an order of precedence when manuals conflict, and formalize a presubmission conference (with a modest fee) to improve application completeness. "We added precedent of documents," the director said. Staff argued that presubmission conferences save applicants money over the long run by avoiding rework.
The draft also clarifies plan-review windows (staff proposed a six-month review validity), strengthens site-safety language giving staff authority to stop unsafe construction practices, and reiterates that public improvements (water, sewer, streets) must be completed or bonded prior to final plat recording as required by RCW. Staff discussed updated transportation guidance (vertical and horizontal curve criteria, curb radii) and options for reduced requirements for residential driveways to lower costs for small builders.
Engineering staff reviewed stormwater and sanitary standards changes, including updated easement language referencing Canyon Creek and Shelton Creek, material standards for pipes (HDPE and ductile iron), camera testing protocols for new sewer lines, manhole lining (Raven's coating), and clarified standards for pressure sewers and pump stations to reduce long-term maintenance.
Councilors asked about cost impacts on small builders; staff said most changes were cleanup and would not substantially increase costs, and some changes (reduced driveway standards) could lower costs. The manual remains in draft form; staff will return with a formatted final version after receiving council input.
Next steps: staff will incorporate council feedback, circulate the draft for additional comment as needed, and schedule a future meeting to present a final formatted manual and any required ordinance changes.
