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The firms below perform analysis and design of drainage systems. These firms have indicated an interest in appearing on this list by responding to Water and Land Resources Division notices.

King County provides this list for your convenience but makes no recommendation regarding these firms.

The list may be expanded to include other interested, licensed firms who ask to be included. If you are a firm who would like to be added to the list, or you need to update information on the list, please contact Will Peddy, Engineering Technician.

For questions about the stormwater website, please contact Brian Sleight, Supervising Engineer, King County Stormwater Services Section.