SB5154 – Prohibits ports from enforcing emission standards for trucks operating on their property, and from prohibiting old trucks until July 2036. (Dead)
Prime Sponsor – Senator Ericksen (R; 42nd District; Whatcom County) (Co-sponsor Jeff Wilson – R)
Current status – Had a hearing in the Senate Committee on Transportation January 21st.
Next step would be – Dead bill.
Legislative tracking page for the bill.

Summary –
The bill prohibits port districts from penalizing or discriminating against the operation on port district property of trucks that don’t meet emissions or related engine standards.  Until July 1st, 2036, it wouldn’t allow them to prohibit any trucks older than the 2007 models from operating on district property (For example, trucks that are now 14 years old would be able to keep running until they were 30 years old; trucks from 1995 that are now 25 years old could run until they were 41 years old, even if ports wanted to prohibit them.)