Bellevue requires erosion control measures for land-disturbing activity. Clearing and Grading Code (LUC 20.25H) mandates BMPs on steep slopes and near critical areas.
Bellevue enforces erosion control under the Clearing and Grading Code, Land Use Code Chapter 20.25H, and the Critical Areas Overlay. Any land-disturbing activity exceeding 2,000 square feet, or any work on slopes steeper than 15 percent, requires a clearing and grading permit with an approved Temporary Erosion and Sediment Control (TESC) plan. Required best management practices include silt fencing, stabilized construction entrances, catch basin inserts, and re-vegetation of disturbed areas. During the wet season (October 1 through April 30), additional stabilization such as plastic cover or hydroseeding is required for exposed soils after 2 days of inactivity. Sediment-laden discharge to storm drains or Lake Washington is prohibited under Bellevue City Code Chapter 24.06 (Stormwater). The Utilities Department inspects active sites and may issue stop-work orders. Violations can result in civil penalties of up to 10,000 dollars per day. Contact Development Services at 425-452-6800 before any grading or excavation.
Contact your local code enforcement office for specific penalty information.
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Side-by-side rule comparisons with other cities in King County.
See how other cities in King County handle erosion control.
See how Bellevue's erosion control rules stack up against other locations.
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