All work to maintain the roadside including but not limited to: maintenance and operation of rest areas and picnic areas, litter removal, mowing, placing herbicides, tree and brush trimming and removal, repair and upgrading of guard rails and extruder terminals, repairing slides and side slopes, placing topsoil, sod, shrubs, etc. to reestablish proper grade and vegetative cover and landscaping, removal or treatment of roadside hazards, installation and maintenance of environmental protection devices, and mitigation of spills or hazardous materials.

None.