County Government

Washington County website

Washington County Community Development Code 421: Flood Plain and Drainage Hazard Area Development and 422: Significant Natural Resources

Washington County Community Development Code 385-388: Airport overlay districts

Washington County Comprehensive Plan: Rural/Natural Resources Plan

Regional Government


Port of Portland

State Government

State of Oregon

Oregon Department of Aviation

Oregon Department of Environmental Quality (DEQ)

Oregon Revised Statutes (ORS)

Oregon Administrative Rules - Land Conservation and Development Department (OAR 660)

Federal Government

Environmental Protection Agency (EPA)

Federal Aviation Administration (FAA)

Transportation Security Administration (TSA)

National Transportation Safety Board (NTSB)

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