As of December 15, 1989, all landfills situated within unincorporated areas of the county were closed, except the Blue Bench landfill, eight (8) miles north of Duchesne, Utah. No other landfill or solid waste disposal site shall be constructed, operated or used within the unincorporated areas of the county without the approval of the state department of environmental quality (DEQ), the United States environmental protection agency (EPA) and the county commission. (1998 Code § 8.20.030)