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Public Works flags stormwater rule change that could raise transportation project costs

Burien City Council · January 26, 2026
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

Public Works told the council that the upcoming end of a transportation exemption in the state stormwater permit will require more stormwater work on transportation projects beginning in 2027, potentially doubling costs for some projects; staff also outlined an $11M transportation and $6M surface water CIP and a proposed 4‑acre maintenance center.

Public Works delivered a broad overview of operations, assets and capital plans during the Jan. 26 special council meeting, and warned of regulatory and funding pressures ahead.

Public Works said its roughly 35 staff maintain a broad asset base — about 300 miles of roads, 6,000 catch basins and roughly 7 plow trucks — and that maintenance and operations budgets lag estimated needs. The department said it will deploy roughly $11 million for transportation improvements and $6 million for surface water projects in the next CIP cycle.

Stormwater engineer Dan O’Brien told council that a major change in the state‑issued NPDES stormwater permit will remove a transportation exemption in 2027. "That goes away in '27, which means pretty much every transportation project that either replaces or adds new pavement or sidewalk ... will have to do significant stormwater management along with those projects," O’Brien said. He warned this could "as much as double in some cases the cost of transportation projects moving forward." Staff said the city’s stormwater fund, which is property‑tax supported, provides a stable base to help buffer some of that cost.

Public Works staff also said they have identified a potential 4‑acre site for a combined maintenance center to replace a leased 1.3‑acre location, and that owning a facility could yield operational efficiencies and reduced long‑term costs; council will see a follow‑up appraisal and recommendation in a later report.

Council and staff did not take formal action during the presentation; staff said more detailed proposals and fee studies (including a traffic impact fee update) are coming later this year.