The Contractor shall furnish all materials, tools, equipment, and labor necessary to complete the scope of services below: A. Retrofit one (1) drive assembly on one (1) circular Thickener originally furnished by Envirex under original order #H106240-101. B. Services shall consist of disconnecting, removing, re-installing, and re-connecting the dome and bridge assembly. C. Replace the entire drive assembly, level, reconnect, set, and test overloads. The replacement drive shall be an Evoqua, model H40ALT Spur gear drive assembly with adapter plates. D. Remove, abrasive blast/prep, paint, and reinstall: o Bridge o Center column o Cage o Stilling well o Trusses o Flights o Skimmer assembly o Scum box assembly E. Proposal cost shall include all project management, all field and administrative labor, replacement components, crane services, standard and specialty tools/equipment, equipment rental, travel, and living expenses. F. NWRWRF shall drain and clean Thickener prior to the start of the project, which should take about five days to complete. G. The Contractor shall perform all work in a manner that does not interfere or negatively impact treatment plant operations. Any issues brought to the Contractor’s attention shall be addressed immediately.