Kent, WA Environmental Rules: Erosion Control (2026)
Key Facts
- Governing section
- KCC 14.01.030(A), IBC Appendix J adoption
- Enforcing official
- Public works director, not building official
- Design standard
- Kent Surface Water Design Manual (KCC 7.05.060)
- Permit required
- Public works permit before construction (KCC 7.05.070)
- Stop work penalty
- Misdemeanor: up to 90 days, $1,000 fine
- Civil penalty
- $500 per violation per day (Ch. 1.04 KCC)
Summary
Kent adopts Appendix J of the International Building Code, the grading and erosion-control appendix, and puts the city's public works director in charge of enforcing it instead of the building official. KCC 14.01.030(A) also adopts Appendices C and E, and every storm and surface water system built during construction must meet the Kent Surface Water Design Manual.
Sec. 101.5. Building code appendices adopted. Appendices C, E and J to the International Building Code are hereby adopted; however, the public works director shall have the authority to enforce and interpret Appendix J and, accordingly, all references to the "building official" in Appendix J shall be substituted with the words "public works director."
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 4542, passed June 16, 2026).
Full Breakdown
' Appendix J is the IBC's grading appendix, the chapter carrying the model code's erosion and sediment control requirements for excavation, fill, and other land-disturbing work. 020, if a state-adopted building code provision ever conflicts with Kent's local amendments, including this grading and erosion-control assignment, the Kent City Code version controls. 070 requires a public works permit before that work begins. 760(E)(3) lets the department also require regular monitoring of surface water discharge and can suspend further site work until state water quality standards under Chapter 173-201A WAC are met.
Violations & Fines
Grading without the required permit, or work that does not follow Appendix J and the Surface Water Design Manual, is enforced under Chapter 1.04 KCC. The code enforcement officer can issue a stop work order under KCC 1.04.090; violating that order is a misdemeanor punishable by up to 90 days in jail, a $1,000 fine, or both. The hearing examiner may also impose a $500 monetary penalty per violation, with each day of continued noncompliance counted separately, reducible to $100 only through the mitigation hearing process.
Frequently Asked Questions
Does Kent require an erosion control plan for construction sites?
Who enforces erosion control on a Kent construction site, the building official or public works?
What happens if a Kent contractor ignores a stop work order for erosion problems?
Is a permit required before installing drainage or erosion control facilities in Kent?
Sources & Official References
Other rules in Kent
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Erosion Control in Nearby Cities
How other cities in King County handle erosion control.