Plant to Produce Purified Water Suitable for Groundwater Replenishment
This project is a significant part of the City of Los Angeles’ long-term water management objective to fully reuse its water supplies and ranks as one of the largest potable reuse projects in the country. The facility will treat wastewater from the existing Donald C. Tillman Water Reclamation Plant to produce purified water suitable for groundwater replenishment via the Hansen Spreading Grounds. The project will use advanced treatment processes, such as microfiltration, reverse osmosis, and ultraviolet and advanced oxidation to purify more than 15 million gallons of water per day.
LEE + RO will provide Professional Engineering Design Services for the electrical design for the Advanced Water Purification Facility (AWPF) design-build project. The project will require coordination with the local utility for new power to the site, which includes a new electrical substation. The site consists of up to three new main structures: AWPF, Tertiary Effluent Diversion Structure, and MF strainers/Feed Pumps.
LEE + RO will be principally responsible for the engineering and construction documents for the associated electrical equipment and systems: Switchgear, MCCs, grounding, lighting, receptacles, cable and conduit, and duct banks. Control diagrams for the MCCs will be based on Jacobs provided control strategy and P&IDs. LEE + RO’s responsibility for controls is limited to MCC bucket motor control schematics and all field panels will be developed by others.
The scope of work is broken up into five design deliverables:
- Concept Design (10%): Includes main power distribution concept and equipment locations concepts. Confirm electrical room sizing is appropriate for all pending equipment.
- Preliminary Design (30%): Includes equipment layout based on mechanical and structural drawings provided by Jacobs, single line diagrams mostly complete, power conduits and power duct banks well established, identification of control schematics to be developed with some schematics started, grounding concepts plans, and lighting mostly complete. All 480V distribution systems and higher will be mostly complete. The electrical room layout is well established.
- Intermediate Design (70%): Includes control diagrams mostly complete, field instrumentation power and control requirements established from P&IDs, cable block diagram will be in various stages of completeness depending on the instrumentation drawings status.
- Final Design (95%): All drawings are well established and mostly complete.
- Issued for Construction (100%): Incorporate remaining comments from client and complete any remaining drawings not finalized in previous submittal.