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
:: WATER TREATMENT
Mills Water Treatment Plant Modules 1 & 2 Rehabilitation
and Chemical System Improvements, Metropolitan Water District 
(MWD) of Southern California   
As Prime Consultant, LEE & RO has been responsible for engineering study and final design services for a $40 million Plant Rehabilitation and Upgrading project consisting of the $18 million Chemical Systems Improvements project (sulfuric acid, caustic soda, hydrogen peroxide, sodium hypochlorite, ammonia, liquid and bulk powder polymers, and chlorine systems) and the $22 million Modules 1 and 2 Rehabilitation project.  The Modules 1 & 2 Rehabilitation project will include rehabilitation of structures, replacement or addition of mechanical equipment, piping, and valves, and upgrading of electrical and controls systems.  The 51.5 mgd Module 1 and the 54.5 mgd Module 2 were removed from service in 1997.  MWD decided to rehabilitate the Mills WTP to its full 326 mgd treatment capacity, which includes 220 mgd capacity of Modules 3 and 4.  Final design was completed in February 2009.
Washwater Reclamation Plant No. 2 and Miscellaneous 
Plant Improvements, Skinner Filtration Plant, 
Metropolitan Water District of Southern California
As Prime Consultant, LEE & RO was responsible for the design and construction phase engineering services for a $7 million washwater reclamation plant improvements which included replacement of flocculators and tube settlers.  Also, the entire electrical system for the washwater reclamation plant was refurbished.  Final design for the $7 million project was completed in March 2005 and construction was completed in 2008.
Skinner and Diemer Water Treatment Plants Oxidation Retrofit Program (ORP) Projects, Metropolitan Water District of Southern California
 As Principal Subconsultant to CDM, LEE & RO has been responsible for the preliminary design, final design, and construction phase engineering services for the chemical tank farms, yard electrical distribution system, and electrical and instrumentation system design at Washwater Reclamation Plant No. 3 for the $170 million Skinner ORP project (construction scheduled to be complete in September 2009) and the $110 million Diemer ORP project (construction began January 2009).  The ORP project is to remove THM forming compounds by ozonation.  The major ORP project components are liquid oxygen storage, ozone generators, ozone contactors, spent ozone destruction system, and chemical tank farms for caustic, sulfuric acid, hydrogen peroxide, sodium hypochlorite, alum, and polymer.
Weymouth Water Treatment Plant Oxidation Retrofit Program (ORP) Project, Metropolitan Water District of Southern California
As Principal Subconsultant (30% share of contract value) to Carollo, LEE & RO has been responsible for the preliminary design and final design of the entire electrical distribution system supporting the $170 million Weymouth ORP Project for removal of THM forming compounds by ozonation.  In addition, LEE & RO provided the structural, mechanical and electrical design of the Plant’s main switchgear building (4,160v switchgear and two 2,250 hp diesel-driven emergency generators). LEE & RO has produced over 300 design drawings for this project. The final design was complete in late 2007.  The project is on hold until the construction funding is arranged.
Goldsworthy Desalter Project, Water Replenishment District 
of Southern California , Torrance , CA
As Prime Consultant, LEE & RO was responsible for the design and construction phase services for the $12 million, 2,100 gpm capacity Goldsworthy Desalter project.  The project objectives were to restore the fresh-water aquifers by removing trapped seawater plumes and to demineralize groundwater and pump it to the CAL Water and City of Torrance domestic water distribution systems.  The project elements included pump stations for groundwater extraction, reverse osmosis (RO) feed, and product water; RO modules and chemical systems; and pipelines for transporting raw water, treated water and brine.  Brine is discharged to a LA County Sanitation District’s trunk sewer.
Chlorine Containment and Handling Facility (CCHF) Projects for Skinner, Jensen and Mills Filtration Plants, Metropolitan Water District of Southern California
As Prime Consultant, LEE & RO has been responsible for planning, design, and construction phase engineering services for the $54 million CCHF program projects at the Skinner, Jensen, and Mills Water Treatment Plants. Current CCHF project status as of July 2009: Skinner Plant – construction completed in summer 2008; Mills Plant – construction approximately 95% complete; and Jensen Plant – construction 95% complete.  The construction cost for the three CCHFs is approximately $18 million each.  Under this program, all of the five MWD water treatment plants will have a fully contained bulk chlorine storage facility consisting either 19-ton chlorine trailers or 90-ton rail cars, complete with chlorine evaporators and chlorinators, chlorine scrubbers, and other safety equipment.
Chloramine Disinfection Conversion Project, Los Angeles County Department of Public Works
As Prime Consultant, LEE & RO has been responsible for design and construction phase services for a $8.5 million Chloramine Disinfection Conversion Project, which will convert existing chlorine disinfection into chloramine disinfection for 18 separate production water well sites located in the Antelope Valley. Each site will be equipped with ammonia and chlorine gas storage (either one ton cylinders or 150 pound cylinders) complete with associated ammonia feed and chlorination systems.  Larger sites with chlorine ton cylinders are equipped with chlorine containment, and chlorine scrubbing systems.  Final design was completed in 2007 and construction is scheduled to be completed in October 2009.