Object: Electronic Auction - Hiring A Specialized Company To Provide Maintenance Services For The Drainage System And Polder Jardim Romano, Through Unblocking And Cleaning Services Using Combined Hydrojet/Sucker/Recycler Equipment; Dehydration And Transport Of Waste To Landfill; Emergency Assistance Using High-Performance Pumping; Continued Maintenance Of The Suction Well, Grates, Lifting Station Baskets, Galleries, Tributary Channels And Maintenance