Official bill information: House Bill 1663
Description of the bill: HB 1663 would require municipal and limited-purpose landfills with more than 450,000 tons of waste to track the amount of heat and methane the facility releases into the atmosphere. If the landfill does release a certain level of heat (more than 3,000,000 British thermal units per hour), the operator would need to install a gas collection and control system and ensure that methane concentration levels stay below 200 parts per million. Rep. Joe Fitzgibbon, D-Seattle, a cosponsor of the bill, noted to Crosscut that methane is the second most voluminous greenhouse gas in the state after carbon dioxide.
Status: Signed into law by Gov. Jay Inslee on March 25, 2022.