The project involves the refurbishment of the NIRC Sewerage Treatment Plant (STP) focused on remedial works to restore structural integrity and address existing defects. The scope includes activities such as Biosolids Removal and Management, Grit Channel and Screening Improvements, Auxiliary Equipment Replacement, Rotating Biological Contactor (RBC) Refurbishment and Protective Structure, and Clarifier Refurbishment. The aim is to improve operational reliability and extend the service life of the STP's existing civil infrastructure.