Wash. Rev. Code § 70A.208.900
(2) Nothing in this chapter authorizes the department or a producer responsibility organization to impose any requirement, in direct conflict with a federal law or regulation including, but not limited to:
(d) Requirements for microbial contamination, structural integrity, or safety of packaging, where no viable recyclable or compostable packaging that can meet the requirements exists, pursuant to:
[ 2025 c 316 s 128.]