The border cities of Washington, Clark county (Vancouver) and Tri Cities, only account for ~600k people compared to ~2M in Portland and 4M in Oregon overall [so

The border cities of Washington, Clark county (Vancouver) and Tri Cities, only account for ~600k people compared to ~2M in Portland and 4M in Oregon overall [some quick searching]. I would expect the fraud rate coming from Washington's central and northern cities to be much lower. By headcount alone, the Washington contribution is maybe conservatively 25%, even if you think those urban areas are recycling at a higher rate than Oregon's rural areas.