WA SB6240

Creates the state aircraft noise and air quality mitigation account to receive a portion of hazardous substance taxes collected on aviation fuel, with tax collection beginning October 1, 2026

Defines the "aircraft noise and air quality mitigation allocation" as the tax on petroleum products exceeding $1.48 per barrel, multiplied by the number of barrels of aviation fuel

Directs the Department of Commerce to establish a grant program funding mitigation strategies for aviation-related air quality and noise impacts in affected communities

Limits eligible grant recipients to communities located within 10 miles of airport runways operated by port districts authorized to undertake aircraft noise abatement programs

Requires taxpayers possessing aviation fuel to separately report the quantity of barrels and tax due on their tax returns