Current Construction Projects

Review information related to current District construction projects below. These projects reflect quarterly construction progress reports.
(Last updated September 2021)

Rehabilitation of Rancho No. 1 & No. 2 Reservoirs

This project includes structural and corrosion repairs, tank operation and safety improvements (including spiral stairways, full perimeter guardrails, and interior fiberglass platform and ladders), installation of a cathodic protection system, and re-coating of the interior and exterior of the reservoir.

Project Location: Laguna Niguel
Estimated Completion: December 2021

RTP Southerly Influent Sewer Improvements

This project was developed to implement improvements to the District’s southerly sewers entering the Regional Treatment Plant. The proposed project will significantly improve the District’s southerly gravity sewer system in this area.

Project Location: Laguna Niguel
Estimated Completion: December 2021

Manhole Rehabilitation Program

Project to rehabilitate manholes throughout the district.

Project Location: Various Locations
Completed: Fiscal Year 2021 – 2022

Aliso Creek and Southwing Lift Stations Auxiliary Generator Replacements

Work for this project includes replacing the existing propane emergency generators with new auxiliary diesel generators at both lift stations.

Project Location: Aliso Creek and Southwing Lift Station
Completed: August 2021

Regional Lift Station Enhancements

Work for this project includes enhancements at the Regional Lift Station that will improve the operational reliability of this critical facility.

Project Location: Laguna Niguel
Estimated Completion: December 2021

2017-18 Electrical Distribution Equipment Replacements

In 2016, a District-wide electrical system assessment was conducted at its pump and lift stations. Based on this assessment, Staff prioritized the recommended electrical upgrades and scheduled the replacement of the appropriate improvements at each station.

Project Location: Various Locations
Estimated completion: August 2021

Pipeline Replacements at I-5 and Oso Creek Crossings

This project replaced existing potable and recycled pipelines that cross under the I-5 freeway south of Oso Parkway by installing a new 72-inch casing below the freeway via microtunneling. New 20-inch potable water and 30-inch recycled water carrier pipelines, each within secondary casings, were contained within the 72-inch steel casing. Connections were made to existing potable and recycled pipelines on each side of the freeway using conventional pipeline installation methods. The project replaced existing potable and recycled pipelines that cross under the I-5 freeway south of Oso Parkway via microtunneling.

Project Location: Mission Viejo

Project Complete

Saddleback Auxiliary Pump And Engine replacement, and Portable Generator Connection

Work for this project will replace the existing auxiliary pump and engine with a new diesel engine-driven vertical turbine pump. The project also includes associated fuel piping, fuel storage tanks, ventilation, electrical, controls, appurtenances, portable generator connection, and building modifications.

Project Location: Various Locations
Estimated Completion: June 2022

Reservoir Management Systems

Work for this project will relocate the tower to a location within the Moulton Peak Reservoir site that improves access for maintenance activities.

Project Location: Various locations
Estimated Completion: March 2022

Reservoir Management Systems Replacement- Phase 3

Work for this project will demolish the existing RMS facilities and construct new RMS facilities at the Aliso Hills, Aliso Summit, Bear Brand, Rolling Hills, and Sheep Hills reservoir sites. The new RMS facilities will consist of new block buildings, sodium hypochlorite and ammonia storage and metering pumps, reservoir mixing systems, sampling stations, safety eyewashes/showers, HVAC, electrical, instrumentation, and controls.

Project Location: Various locations
Estimated completion: December 2022

UPPER SALADA LIFT STATION AUXILARY GENERATOR REPLACEMENT

Work for this project includes constructing new retaining walls and fencing along the westerly and southerly sides of the lift station; on-site asphalt paving; recoating the existing fencing; and installing new rolling gate for site access. Additionally, a new diesel engine-driven emergency generator will be installed along with a fuel system capable of fueling the generator for a 24-hour period to replace the existing natural-gas standby generator.

Project Location: Laguna Niguel
Estimated Completion: June 2022