Temecula Valley Regional Water Reclamation Facility Plant 3 Electrical Modifications

Temecula Valley Regional Water Reclamation Facility (TVRWRF) Plant 3 is currently experiencing intermittent failures in the membrane bioreactor mixers (MBM). This was found to be a result of sever mixer corrosions from a faulty grounding system. Electrical issues at Plant 3 were also found, including potential bonding issues with the aluminum handrailing around the MBR basins, tripping of ground fault circuit interrupters (GFCI) which damaged onsite wastewater samplers, and return activated sludge SCADA hardware failure. The scope of work would include installation of sump pumps to discharge drainage and groundwater infiltration and the upgrade to existing electrical panel with isolation transformer and GFCI protection for wet location application. These upgrades would eliminate potential safety hazards within six electrical vaults and stop infiltration from entering the interconnected conduits and below grade electrical panels. Beneficiaries of the project are Eastern Municipal Water District TVRWRF staff and ratepayers.