Summary: Tariff revision for certificate G-51, reflecting the increase in the State B&O taxes. On April 1, 2020, the state Business and Occupation tax rate for Service and Other increased from .015 to .0175. The company serves approximately 150 residential; 40 commercial; and 2 roll-off customers in Skamania and Klickitat counties affected by this change. The last general rate increase became effective April 1, 2018.