Vehicles must:

• be within engine model years 2009 and older.
• operate a minimum of 50% in the following counties: Box Elder, Cache, Davis, Duchesne, Salt Lake, Tooele, Uintah, Utah, and Weber
• be fully operational and have a minimum of three years remaining in its useful life
• travel a minimum of 7,000 miles annually (for the two years prior to upgrade)
• be currently owned and operated by the participating fleet owner for two years prior to the upgrade
• be permanently disabled within 90 days of placing the new vehicle into service
• be replaced with vehicles/equipment that are within the same vehicle class or equipment horsepower and operate in the same function and areas as the vehicle being replaced

Equipment must:

• be 51 horsepower or higher and engine model year 2006 or newer or 51-300 horsepower and engine model year 1996 or newer, or 301 horsepower or higher and engine model year 1986 and newer
• Tier 0-Tier 3 and replaced with Tier 4
• operate a minimum of 50% in the following counties: Box Elder, Cache, Davis, Duchesne, Salt Lake, Tooele, Uintah, Utah, and Weber
• be fully operational and have a minimum of three years remaining in its useful life
• operate a minimum of 500 hours annually (250 hours for agriculture equipment)
• be permanently disabled within 90 days of placing the new vehicle into service
• be replaced with equipment that is the same horsepower and operates in the same function and areas as the equipment being replaced