The City of Riverside Regional Water Quality Control Plant (RWQCP) has five (5) influent sewers. The Acorn, Arlanza, and Santa Ana sewers are currently equipped with area-velocity type flow meters. The Rubidoux and Jurupa sewers are equipped with more accurate electromagnetic flow meters (mag meters).
The City of Riverside Public Works Department (City) has contracted LEE + RO to upgrade and replace the area-velocity type flow meters with mag meters on the Acorn, Arlanza, and Santa Ana influent trunk sewers to obtain more accurate and reliable flow measurements at the RWQCP.
LEE + RO’s scope of services includes conducting an assessment study, updating a 2014 Preliminary Design Report (PDR) including verifying design flow rates, hydraulic calculations, design criteria, and meter sizing, providing comprehensive final design plans, specifications, and estimates in accordance with the approved PDR update, bid phase support services, and engineering services during construction.
The minimum recommended mag meter sizes are 10-inches for the Acorn influent sewer, and 28-inches for the Arlanza and Santa Ana influent sewers. The configuration of the metering facilities will include an influent diversion structure, a meter vault that protects the meter, an outlet diversion structure, and a bypass pipeline.