Please CLICK on links below to view some of our recent projects in these categories. 
Wastewater
Treatment and
Water Recycling 		Water 
Treatment 		Water Reservoirs 
& Well Heads 		Pumping
Stations 		Pipelines Electrical and
Instrumentation
& Controls 		Construction
Management
:: Electrical and Instrumentation & Controls Systems Engineering
Colorado River Aqueduct (CRA) Pumping Plants 230kV Line and 6.9 kV Bus Bracing Improvements, Metropolitan Water District of Southern California
 MWD operates five CRA pumping plants: Intake, Gene, Iron Mountain , Eagle Mountain , and Hinds to move the Colorado River water to Lake Mathews Reservoir.  Each pumping plant has nine (9) synchronous motors that drive vertical centrifugal pumps.  The motors operate at 6.9 kV and use air magnetic circuit breakers for starting/stopping control.  As Prime Consultant, LEE & RO determined that the potential fault currents in the circuit breakers in the switch houses at four CRA pumping plants (Intake, Gene, Eagle Mountain , and Hinds) exceed by approximately 20 percent.  LEE & RO also determined that the busses at all five pumping plants can presently withstand a fault current of only 8,900 amps.  This project is to provide safe fault current protection for the CRA pumping plants by reducing the momentary fault current load on the 6.9kV circuits below 70,000 amps, and upgrading the capacity of the 6.9kV buses to at least 70,000 amps.  MWD planned two CRA shutdowns in the near term the new line reactors and bus bracings will be constructed during the planned shutdowns.  Design of these $7.5 million upgrades was completed and the construction is scheduled to begin November 2009.
Electrical Reliability Study and Preliminary Design, Weymouth Water Treatment Plant, Metropolitan Water District of Southern California   
As Prime Consultant, LEE & RO was responsible for field investigation, engineering analysis, and preparation of the preliminary design report for the Weymouth Water Treatment Electrical Distribution Reliability Improvement Project.  The project objective seeks to develop reliable electrical service from SCE’s 66 kV utility service and to provide a 4,160v distribution system to various power distribution centers.  The study also developed a reliable emergency power system capable of supporting the existing plant systems in addition to the planned $140 million Oxidation Retrofit Program project requirements.  The various improvements identified in the study have estimated construction values of $30 million.  The study was completed in March 2008.
Pacheco Pumping Plant Upgrading and Adjustable Speed Drive Replacement Project, Santa Clara Valley Water District, San Jose, CA    
As Prime Consultant, LEE & RO performed an engineering study and design of a $14 million electrical & mechanical system improvement project for the Pacheco Pumping Plant (PPP), owned by the United Sates Bureau of Reclamation (USBR) and is an integral part of Reach 1 of the Federal Central Valley Project’s San Felipe Division.  The 350 CFS capacity PPP has twelve (12) main pumps with wound rotor motors which are rated for 2,000HP each.  The existing motor starters/controls are 1970 technology - Toshiba Adjustable Speed Drives (ASDs).  The project includes replacement of  4,160 volt ASDs with new variable frequency drives (VFDs), testing of the 2,000 hp motor drives per NETA and IEEE requirements, structurally retrofitting pump gallery to accommodate VFDs, installation of a new flowmeter and RTU and SCADA connection for each of the 12 pump discharge lines, replacing HVAC and chillers, and optimization of pump controls.
West Coast Basin Barrier (WCBB) Telemetry System Project, Department of Public Works, Los angeles County
The County operates three barrier projects:  West Coast Basin Barrier (WCBB), Alamitos Barrier, and Dominguez Gap Barrier.  WCBB has 153 injection wells (located in 42 separate sites) and a total capacity of 30 cfs.  WCBB receives water from the Metropolitan Water District and West Basin Municipal Water District.  WCBB telemetry system collects monitoring data (flow, level, pressure, chloride, etc.) from 153 injection wells and transmits the data to the central monitoring stations.  WCBB telemetry system is outdated and has not been reliable.  As Prime Consultant, LEE & RO performed field investigation, analyzed alternatives, developed a recommended plan and now preparing design documents.  The design includes 42 Remote I/O Drops, PLCs, Siemens Profinet data management system, and signal transmission system.  The design is scheduled to be complete in December 2009.
New 66kV Service, Switchgear Building, and Electrical System for Oxidation Retrofit Program (ORP) Project at Weymouth Water Treatment Plant, Metropolitan Water District of Southern California
 As Principal Subconsultant to Carollo Engineers, LEE & RO was responsible for the preliminary design and final design of a new 66 kV power feed, a new switchgear building with two 2,250 kW diesel engine driven emergency generators, addition of new unit substations, and a plant-wide 4.16 kV electrical power distribution system for the $200 million ORP project.  Project components consist of ozone generators, ozone contactors and spent ozone destruction equipment, liquid oxygen (LOX) facilities, and chemical tank farms for caustic, sulfuric acid, hydrogen peroxide, and sodium hypochlorite.  The construction of the $9 million switchgear building will begin in December 2009 and the remaining ORP project construction is scheduled to start in 2011
Groundwater Replenishment System (GWRS) , Orange County Water District, Fountain Valley, CA   
As Principal Subconsultant to CDM, LEE & RO designed and provided construction phase services for electrical systems supporting the microfiltration, chemical systems, and RO transfer pumping station for the $400 million GWRS project commissioned in December 2007.  GWRS is a state-of-the-art water recycling project for treatment and injection of secondary effluent from the Orange County Sanitation District for replenishment of the groundwater aquifer.  The process includes microfiltration, RO, and UV disinfection in a modular design scheme.  Plant flows for the initial stage are 70 mgd with the ultimate build-out increasing to 130 mgd.  The project included a new SCE substation and extensive use of medium voltage adjustable frequency drives.  The LEE & RO design included five 600 hp pumps (4,160v) driven through Allen Bradley variable frequency drives, MCCs, power distribution and controls.  GWRS has been in operation since 2008.
Ellis Street Wastewater Pumping Station (ESWPS), Orange County Sanitation District, Fountain Valley, CA   
As Principal Subconsultant Malcolm Pirnie, LEE & RO designed and provided construction phase services for electrical and instrumentation systems supporting the new 60 mgd capacity ESWPS.  The project objectives seek to balance the flow between Plant 1 and Plant 2 and to provide adequate flow to the $400 million Groundwater Replenishment System (GWRS) project.  This $30 million pump station is equipped with six 10 mgd Wemco Hydrostal pumps driven by 200 hp motors through variable frequency drives.  LEE & RO was responsible for the electrical, instrumentation and SCADA system planning, design, and construction support services.  The 12 kV power is fed from the Central Generation System to the pump station through Power Building 3.  The pump station construction was completed in March 2009.
Rehabilitation of Anaerobic Digesters, Reclamation Plant No. 1, Orange County Sanitation District, Fountain Valley, CA   
As Principal Subconsultant (40% share of  contract value) to EarthTech, LEE & RO is providing electrical and control systems engineering analysis and design of various improvements to 12 anaerobic digesters and four digester control buildings at the 174 mgd Reclamation Plant No.1.  Plant No. 1 is being converted to full secondary and additional sludge production is expected.  The goals of this $45 million project are to increase the biosolids processing capacity and improve efficiency of sludge digestion without building additional digesters.  LEE & RO is responsible for the electrical reliability study and electrical improvements, including Power Building 5 revisions, 12 kV switchgear modifications, new four 2,500 KVA transformers, and four double-ended 480v MCCs with two automatic transfer bus switching systems for additional reliability.  The design was completed in June 2009 and construction is scheduled to start in December 2009.
Electrical Evaluations and Coordination Studies for Three Wastewater Treatment Plants, South Orange County Wastewater Authority (SOCWA), Dana Point, CA   
As Prime Consultant, LEE & RO performed in-depth electrical evaluations for identification of electrical system deficiencies and development of a 20-year capital improvement program for three wastewater treatment plants; the 12 mgd Joint Regional Treatment Plant, the 6.5 mgd Coastal Plant, and the 3.5 mgd Plant 3A.  Tasks included evaluation of existing equipment reliability, coordination studies, and cogeneration and standby power system evaluation.  LEE & RO investigated the sites, prepared load summaries, prepared as-built single line diagrams, reviewed code compliance (NEC/NFPA), conducted safety analysis, and prepared an evaluation report.  The report recommended $4.5 million in capital improvements to be implemented over a ten year period. 
Owens Lake Dust Control Program, Shallow Flood Area Electrical Distribution System Design, Department of Water And Power, 
City of Los Angeles   
As Principal Subconsultant to CDM, LEE & RO is responsible for the electrical distribution system design for five Moat Row areas of the $200 million Dust Control Program projects undertaken by LADWP.  The LEE & RO scope of work includes electrical distribution systems, including both the North and South Sand Sheet 4,800 volt and 480 volt systems supporting existing and new dust control facilities.  The design scope includes single line diagrams, panel board schedules, site plans/turnouts, wiring plans and details, pipe heat tracing, and miscellaneous electrical details.  The project construction is scheduled to be complete in summer of 2010.
Electrical and Instrumentation Design For Sludge Thickening and Dewatering Facilities at Weymouth and Diemer Water Treatment Plants, Metropolitan Water District of Southern California   
As Principal Subconsultant to Black &Veatch, LEE & RO provided final design and construction phase engineering services for the electrical and instrumentation and control systems for two sludge thickening, dewatering, and trucking facilities.  Construction costs were $14 million for the Weymouth facility and $16 million for the Diemer facility.  Construction of the Weymouth facility was completed in October 2006 and the Diemer facility construction was completed in late 2007.