Summary: Petition for a partial exemption from WAC 480-07-520 to limit work paper filing requirements and a proposed general rate increase that would generate approximately $120,000 (8.4 percent) additional annual revenue to recover the increased cost of disposal fees set by the City of Walla Walla. On January 1, 2015, disposal fees increased from $71.00 to $76.70 per ton at the Sudbury Road Landfill. The company serves approximately 4,900 residential, commercial, and drop box customers in Walla Walla and Columbia Counties. The company's last general rate increase became effective on June 1, 2009.