Summary: General rate increase in Item 230, drop box disposal fees. On March 1, 2018, drop box disposal fees, set by Cowlitz County, at the Third Avenue Transfer Station increased from $49.78 per ton to $51.02 per ton. Annual drop box disposal revenues and expenses would increase by approximately $19,394 (0.45 percent). The company serves approximately 50 drop box customers in Cowlitz County. The company's last general rate increase became effective on April 1, 2016.