Recharge Master Plan Update (RMPU) Basin Improvements Project Montclair Basin Improvements

The project involves constructing improvements at Montclair Basins 2 and 3 to divert storm flows from the San Antonio Creek Channel for groundwater recharge. The work includes installing two diversion structures (drop inlets) in the San Antonio Creek Channel, constructing them across the 25-foot concrete channel, and excavating 8-10 feet below the channel floor. Steel grates will be installed over the structures to prevent debris, and wall-mounted steel gates will be provided. Four-foot-diameter discharge pipelines will be installed from each structure to Basins 2 and 3, routed across a gravel access road and basin slopes. Concrete outlet structures will be constructed in the basins for flow dissipation, and piping along basin slopes will be covered with 3 feet of soil. The project also requires all electrical, instrumentation, and SCADA controls integration to actuate the Basin 2 and Basin 3 gates, with programming to be performed by an approved controls integrator.

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