GLWA-CON-248 - GLWA Southwest WTP - Phosphoric Acid and Chlorine System Improvements

The Work of Project and Deliverables are defined by the Contract Documents and consists of the following:

Partial replacement of piping and valves associated with the chlorine and phosphoric acid chemical feed systems.  For the chlorine system, approximately 50 PVC ball valves will be installed in 2” and 3” sizes.  For the phosphoric acid system, approximately 54 PVC diaphragm valves and 10 PVC ball check valves will be installed in 1” size.

Remove ten existing phosphoric acid metering pumps.

Receive ten Owner-selected and Owner-furnished progressing cavity metering pumps with integral control panels and install eight, leaving two as spares.

Provide a temporary phosphoric acid feed system.

Modify the concrete pump mounting platform and install new pipe mounting racks.

Remove and replace the chemical resistant coating within the phosphoric acid containment area including surfaces and walls.