Summary: Petition for an exemption from WAC 480-07-520(4) work papers, and request for Less than Statutory Notice for a tariff revision that would generate approximately $8,350 (0.9 percent) additional annual revenue to recover the increased cost of disposal fees. Columbia River Disposal (G-48) serves approximately 1,870 customers in Skamania County. The company's last general rate increase became effective on April 1, 2018.