This contract is for the maintenance, repairs, and replacement of evaporative cooling equipment for the City of Tucson. The contract includes services such as evaporative unit shutdown and startup, and the replacement of parts such as rigid media pads and Aspen pads. The contract has a term of 4 years, with the option to renew. The vendor, Centerline Mechanical LLC, will provide the services and materials necessary to perform the work. The contract includes a pricing proposal with specific rates for different services and materials.