Summary: Petition for an exemption from WAC 480-07-520 and tariff revision that would generate approximately $34,697 (2.3 percent) additional annual revenue to recover the increased cost of disposal fees set by City of Walla Walla. On March 7, 2018, disposal fees will increase from $85.30 per ton to $89.80 per ton at the Sudbury Road Landfill. Basin Disposal of Walla Walla serves approximately 4,200 garbage customers in Walla Walla County. The company's last general rate increase became effective on June 1, 2010.