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
:: Pumping Stations
Earl Schmidt Intake Pump Station (ESIPS) Settlement Investigation and Corrective Design, Castaic Lake Water Agency   
LEE & RO, as Prime Consultant, investigated the cause of the discharge piping settlement and engineered the corrective measures.  ESIPS was expanded including addition of two new pumps in 2006.  In less than a year of operation, a leak was discovered on the 54-inch pump discharge manifold.  Also, due to excessive vibration, pump bearing was failed and the pumps were removed from service.  Investigations revealed that the poor construction created differential settlement which, in turn, resulted in pumps and discharge headers being badly misaligned.  The corrective design is in progress and the construction will start in November 2009.
Edwards Hill Booster Pump Station, City of Huntington Beach   
Edwards Hill Potable Water Booster Pump Station, constructed in 2002, has four 1,500 gpm and three 1,250 gpm capacity pumps, each driven by an electric motor-natural gas engine through Johnson right-angle gear.  The Station has a number of operating problems such as vibration, noise, excessive heat, hydraulics, capacity and flow control issues, and electrical deficiencies.  The City retained LEE & RO to perform a comprehensive assessment of the pump station and develop a corrective action plan and provide engineering design documents.  Phase 1 evaluation is scheduled to be completed in August 2009 and Phase Engineering Report in November 2009.
Wastewater Pumping Station 45, Trunk Sewers and Force Mains, 
City of San Diego   
As Prime Consultant, LEE & RO prepared the preliminary design reports, final design, and provided construction phase engineering services for $16 million Pumping Station 45 Project and associated trunk sewers and force mains.  Portions of the trunk sewers and force mains for PS 45 were constructed utilizing micro-tunneling.  The project design was completed in 2004 and construction of the pump station was completed and has been in operation since 2007.  This project received “Project of the Year” award in 2007 from the San Diego & Imperial County Chapter of the American Public Works Association.
Zone 6A and Zone B+ Booster Pump STation (BPS) Improvements, 
Irvine Ranch Water District, Irvine, CA   
As Prime Consultant, LEE & RO was responsible for preliminary design, final design, and construction management services for improvements to an existing 1,400 gpm high pressure Zone 6A Potable Water BPS.  Zone 6A BPS capacity was increased to 2,500 gpm, variable frequency drives were added and SCADA system was improved.  Zone B+ reclaimed water system BPS project included removal of unused pumps and installation of new variable frequency drives, flow and pressure control regulators. The construction of this $2.5 million project was completed in May 2009.

THree Wastewater Pumping Stations In The City of Newport Beach, 
Orange County Sanitation District, Fountain Valley, CA
As Prime Consultant, LEE & RO has been responsible for engineering and construction phase engineering services for three new pump stations (A Street, 14th Street, and Bitter Point Pump Stations) serving the City of Newport Beach.  The aggregated construction cost for these three stations is over $32 million.  All stations are equipped with a self-cleaning wet well and screw-centrifugal (Wemco Hidrostal) pumps driven through variable frequency drives.  The 14th Street and A Street Pump Stations, with a combined construction cost of $12 million, have been constructed and in operation since 2008.  The $20 million, 40 mgd capacity Bitter Point station has been under construction since June 2009.  The unique engineering and construction challenges that LEE & RO have dealt with these stations include complex hydraulics, public relations (pump stations are located affluent City of Newport Beach), and obtaining permits from the Coastal Commission and Caltrans, and high groundwater levels.

San Juan Creek LIft Station, Santa Margarita Water District, Las Flores, CA
As Prime Consultant, LEE & RO provided planning, design and construction phase engineering services for pipelines and a new $4 million sewage lift station.  Wastewater flows from the lift station are conveyed to the Chiquita Water Reclamation Plant via a 16-inch, 7,800-foot long force main.  The lift station has a 14 mgd capacity at a TDH of 180 feet and includes a multi-level building to house the dry pit submersible motors, switchgear and emergency generator, surge tank, emergency storage, trash rack, as well as features to add an optional odor control facility.  The lift station has been in service since 2005.
Recycled Water Pump STations, Palm Desert, Coachella Valley Water District, Coachella, CA
As prime Consultant, LEE & RO provided planning, design, and construction management services for two $5 million recycled water pump stations.  One high-pressure recycled water pumping station consists of five 400 hp pumps, each rated 3,000 gpm at 400 feet TDH.  The low pressure pumping station consists of four 300 hp pumps, each rated 3,750 gpm at 230 feet TDH.  All pumps are driven through variable frequency drives (VFDs).  The project also included a 5 million gallon capacity recycled water reservoir.  The pump stations have been in service since 2007.
San Joaquin Pumping Stations and Flow Control Facility, Irvine Ranch Water DIstrict 
As Prime Consultant, LEE & RO was responsible for planning, design and construction support services for the $3 million, SJR Flow Control and Pumping Facilities project.  This project consisted of an 8,250 gpm pumping station (with three 75 hp, 4,125-gpm, VFD-driven pumps), flow control facility, hypochlorite disinfection facility, and sub-surface water collection and pumping facility at the base of the dam.  IRWD purchased the SJR from MWD and converted it to a reclaimed water storage reservoir, integrating it into their Zone B recycled water system.  Construction was completed and it has been in operation since 2007.
Stormwater Consulting and Engineering Services, Mission Bay Development Authority, 
Catellus urban Development Corp., San Francisco, CA
Since 1998, LEE & RO, as Prime Consultant, has been providing stormwater engineering and consulting services for the $4 billion Mission Bay Development Project in the City of San Francisco . The assignment included designs for stormwater collection, pumping, treatment, and disposal.  LEE & RO designed three stormwater pump stations (Stations 1, 4, and 6) and is currently designing Station 5.  Station 1 was constructed in 2004, and construction for Stations 4 and 6 is underway.  The pump stations are equipped with stormwater treatment units.  The construction cost of each pump station is approximately $7 million.
Stormwater Management Planning, Pumping Station and Onsite Detention Basin, Sacramento Regional County Sanitation District
As a Prime Consultant, LEE & RO is responsible for preparation of a Business Case (Life-Cycle Cost/Risk) Analysis, preliminary design report, and final design of an $8 million stormwater management facility.  The project elements consist of mechanical and electrical reliability upgrades for the pump station and a new stormwater retention basin.  The final design is underway and is scheduled to be complete in December 2009.