WA SB6119

Prohibits manufacturing, selling, or distributing new tires containing intentionally added 6PPD or regrettable 6PPD substitutes in Washington beginning January 1, 2035

Imposes a 6PPD mitigation fee on retail sales of new replacement tires containing 6PPD starting January 1, 2027: $3 per tire for load ratings up to 2,500 pounds, $6 per tire for higher load ratings, with 10% annual increases thereafter

Creates the 6PPD mitigation account to fund monitoring of 6PPD-quinone contamination in stormwater, surveying salmonid spawning waters for prespawn mortality, and related environmental activities

Establishes civil penalties of up to $5,000 per violation for first offenses and up to $10,000 for repeat violations, with enforcement by the Department of Ecology

Exempts 6PPD-free tires (which can be certified by manufacturers), original equipment tires on new vehicles, retreaded tires, and warranty/recall replacement tires from the mitigation fee