The Work includes, but is not limited to, Headworks Corrosion Rehabilitation and Addition of a Metering Chamber at the Mount Albert Water Resource Recovery Facility located at 5866 Doane Road in the Town of East Gwillimbury, consisting of the following: .1 Headworks Rehabilitation The existing Headworks is severely corroded due to a high presence of hydrogen sulfide corrosive wastewater gas. The scope of work includes, but is not limited to:  Removal and disposal of temporary aluminum floor plates  Cleaning the existing wastewater channels and vortex grit tanks within the Headworks  Chipping out deteriorated concrete within the wastewater channels and vortex grit tanks  Rebuilding the concrete wall(s) profiles, including reinforcement  Grit blasting and coating of all the channels and tanks with a cementitious corrosion resistant coating  Supply and installation of stainless steel seating angles along the top of all walls and tanks to support the new covers.  Removal and disposal of existing channel slide gates  Supply and installation of new UV-resistant FRP covers on all channels and tanks  Modifications to the existing concrete inlet chamber, includes: new piping, concrete chipping, and concrete fill, and external excavation  Supply and installation of davit bases and life safety anchor points to replace the existing corroded items .2 Headworks Bypass  In order to facilitate the Headworks Rehabilitation a bypass must be installed from the inlet forcemain to the lagoon manhole. The scope of work includes, but is not limited to:  Modification of the “splitter” inlet chamber and piping at plant entrance  Temporary fused HDPE piping from the bypass connection, at the “splitter” inlet chamber, to the existing lagoon manhole  Temporary fused HDPE piping from the existing lagoon manhole to the existing aeration tanks  Bypass pumping system installation, monitoring and removal  Works include excavation, temporary road plates, and roadway repair .3 Metering Chamber  Precast concrete metering chamber  Includes new magnetic flowmeter, installation and calibration  Includes installation of meter complete with power and signal, SCADA signal termination of meter into existing on-site PAC Panel  Includes excavation and roadway repair.  Removal of the existing 350mm diameter magnetic flow meter located in the headworks building, to be cleaned and returned to the Region, and supply and installation of a spool piece.