Under Washington state law (Chapter 70.95 RCW), each county, in cooperation with cities located within, is required to prepare a coordinated, comprehensive solid waste management plan (SWMP). Solid waste plans provide long-term, environmentally-sound solid waste management guidelines. Solid waste plans in Washington State are required to be reviewed every five years and updated or revised as necessary. Spokane County is currently working with a consulting company called Great West Engineering, Inc. to create the 2020 Spokane County Comprehensive Solid Waste Management Plan. The Comprehensive plan will guide the solid waste decisions and activities for the Spokane County Regional Solid Waste System, which includes the unincorporated County and member jurisdictions.