PDFWAC 480-70-236
Tariffs, all companies must file tariffs and must comply with the provisions of approved tariffs.
(1) No company may provide solid waste collection service until it files, and the commission approves, a tariff.
(2) No company may assess rates and charges for solid waste collection service that are higher, lower, or different from those contained in its approved tariff.
(3) No company may accept a payment for service provided that is higher, lower, or different from the rates and charges contained in its approved tariff.