1. The Consultant shall prepare a technical memorandum (TM) thoroughly defining and analyzing the sluice gates (4), sluice gate actuators (4), bar screens (4), air scour system and pump for the bar screens, traveling screens and water spray systems (2), recirculation 24” butterfly valves and actuators (2), and raw water pumps (6). The TM should also consider all hydraulics, electrical power, controls and SCADA aspects that will be involved with the equipment replacements. Cleaning of all system components not replaced as part of the project will also be an important consideration in the scope of the project. The Consultant shall consider whether two (2) air pumps should be installed (rather than one) for the cleaning of the bar screens. 2. Drawings and specifications shall be of such quality and contain sufficient details so that no misunderstanding may reasonably arise as to the extent of the work to be performed, the materials to be used, the equipment to be installed or the quality of the workmanship. 3. The air scour system and compartments associated with the bar screens and sluice gates shall be thoroughly cleaned by the Contractor. The Consultant shall provide direction and specifications for this portion of the Work. 4. The raw water pumps and actuators need a thorough evaluation regarding year of installation, technical capabilities, degree of degradation, loss of function, and discharge pipe arrangement. The CWTF staff report that two (2) to four (4) of these pumps may need replacement. It is recommended that these be included in an “alternate” scope of work.
