Allocating a portion of hazardous substance tax revenues derived from aviation fuel to aircraft noise and air quality mitigation.

SB 6240 redirects a portion of Washington's aviation fuel tax - specifically the amount exceeding $1.48 per barrel - to fund aircraft noise and air quality mitigation projects. This affects aviation fuel users (like airlines and airports) who pay the tax, with funds deposited into a new state account created by the bill. The key mechanism amends tax code to require 15% of the aviation fuel tax revenue above the $1.48 threshold to flow into this dedicated account. These funds will support state programs addressing noise pollution and air quality near airports. The bill does not change tax rates but reallocates existing revenue for targeted environmental mitigation.