Huntington Beach Plant Future Construction

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Outfall Low Flow Pump Station and SCADA System and Network Upgrades

Project Description:

This project has two components, the first will rehabilitate the mechanical, electrical, and civil systems at the Ocean Outfall Booster Station at Plant 2 which is the primary pumping station for the discharge of secondary effluent to the ocean outfall system. This project includes replacement of portions of the Ocean Outfall Booster Station pumping systems with a low flow pump station to more efficiently pump dry weather flow. In addition, this project will replace the plant water pump station to accommodate the Groundwater Replenishment System Final Expansion.

The second component consists of providing a Process Data Network at Plant No. 2 which is independent and isolated from the Office Data and Security systems. These improvements will provide greater security, increase SCADA system capacity, and provide the network needed for the Load Management and Load Shedding System. Load Management and Load Shedding items will be provided under this project.

Currently Approved Budget:   $138,890,000

Construction is scheduled to begin 2019

Plant No. 2 Primary Treatment System Rehabilitation

Project Description:
The primary treatment facilities at Plant No. 2 consist of fourteen circular clarifiers which are supported by influent piping, influent distribution structures, effluent piping and sludge pumping units. The clarifiers are covered with geodesic domes which collect foul air from the clarifiers for conveyance and treatment at two foul air scrubbing complexes. The first phase of the project will provide short-term repairs to the ten clarifiers on B-Side and C-Side, along with associated facilities to provide necessary reliability when the A-Side clarifiers are taken out of service for at least three years for construction of the second phase. The second phase will replace the four clarifiers on A-Side, construct a new odor control system, and provide a new Power Building to serve the entire primary complex. The third phase of project will make permanent repairs to B and C Clarifiers.

Currently Approved Budget:   $245,000,000

First phase of construction is scheduled for 2019

Headworks Modifications for GWRS Final Expansion

Project Description:

This project will modify Headworks, related piping, and sidestream flow routing to separate reclaimable and non-reclaimable flows to accommodate the Orange County Water District's Groundwater Replenishment System Final Expansion.  Work elements include installing a new 66-inch diameter flow diversion, installing or upgrading existing gates, and modification of waste sidestream pump station discharge piping to the non-reclaimable portion of the plant.  The work includes replacing three existing main sewage pumps with new, smaller pumps.

Currently Approved Budget:  $54,000,000

Construction is scheduled to begin 2020