Summary: Proposed increase in Item 230 drop box disposal fees. On January 1, 2016, drop box disposal fees, set by the City of Spokane, at the Spokane Waste to Energy Plant will increase from $102.39 per ton to $105.36 per ton. Annual drop box disposal revenues and expenses would not increase because the company only uses this facility as a backup disposal site. The company's last general rate increase became effective on May 12, 2015.