Perris II Desalination Facility

Perris, California

This project built a 5.4-million-gallons-per-day (MGD) reverse osmosis (RO) desalter in the Perris South Groundwater Sub-basin to provide drinking water for up to 12,000 households annually. In addition to “drought-proofing” the region by reducing future demand for imported water, project benefits include salinity management for expanded water recycling and protection of high-quality groundwater in adjacent basins. MEC’s major scopes of work included:

• Execution and coordination of design and construction for control systems equipment and associated testing
• Installation of equipment: Kingfisher remote telemetry unit (RTU), variable frequency drive (VFD), motor-actuated valve, uninterruptible power supply (UPS), RO skid, electrical motor control center (MCC)/switchboard, chemical systems and plant security
• Management of the control systems subcontractor, including input/output (I/O) scopes and verifications/review of control strategies
• Management of the construction and network integration between the new and the existing facilities — including cutover and testing — in close coordination with major discipline subcontractors
• Startup and commissioning of all equipment and instrument point-to-point checks