Specifications include, but are not limited to: provide all labor, tools, materials, vehicles, incidentals, and equipment necessary to provide emergency, on-call, service for troubleshooting and emergency maintenance service and/or service repairs on emergency back-up diesel, gas and/or propane fueled stationary generators. The emergency generators are located at Caltrans Maintenance Stations, Radio Repeaters, and Pump Houses throughout District 3 in Butte, Colusa, El Dorado, Glenn, Nevada, Placer, Sacramento, Sierra, Sutter, Yolo and Yuba Counties. This is an as-needed, on-call, Service Request based Agreement. Contractor will be reimbursed for the actual cost of materials/supplies purchased to be used or installed at the work site in performance of the Agreement (including applicable sales tax and shipping), without additional allowance for markup.