| Wastewater
Pumping Stations 45, 49 and 50, Trunk Sewers, and Force Mains,
City of San Diego, CA
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| As Prime
Consultant, LEE & RO prepared the preliminary design reports,
final designs, and provided construction phase services for
Pumping Stations 45 (photo
inserted), 49 and 50 and associated trunk sewers and force
mains. The combined
construction cost for the three pump stations was $16 million.
Portions of the
trunk sewers and force mains for PS 45 were constructed utilizing
micro-tunneling. The
project design was completed in 2003 and construction of the three
pump stations was completed in June 2007.
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Zone 6A and Zone B+ Booster Pump Station (BPS) Improvements, Irvine
Ranch Water District,
Irvine,
CA
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As Prime Consultant, LEE & RO is responsible for preliminary
design, final design, and construction management services for
various improvements to an existing and outdated 1,400 gpm high
pressure BPS. The pump
station capacity will be increased to 2,500 gpm and project
components include the addition of variable frequency drives and
improvements to the ventilation system and SCADA.
Zone B+ reclaimed water system modifications include
removal of unused pumps and installation of new variable frequency
drives, flow and pressure control regulators. This $2 million
project is under construction.
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Three Wastewater
Pumping Stations in the City of Newport Beach, Orange County
Sanitation District, Fountain Valley, CA
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As Prime Consultant, LEE & RO was responsible for engineering
and construction support services for three new pump stations
serving the City of
Newport Beach
. The construction
cost for the three stations is over $35 million.
All stations will be equipped with a self-cleaning wet well
and dry-pit submersible pumps driven through variable frequency
drives. The $23
million Bitter Point station will have a capacity of 40 mgd and
design will be complete in March 2008.
The
14th Street
and
A Street
pump stations, with a combined construction cost of $12 million,
have been in operation since May 2007. The
unique engineering challenges that LEE & RO faced with these
stations included locations in an affluent community, complex
hydraulics, obtaining permits from the California Coastal
Commission and Caltrans, and high groundwater levels. (Photo
shows the
14th Street
Station architecture necessary to blend into the
Balboa
Bay
neighborhood).
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| Stormwater
Management Planning, Pumping Station and Onsite
Detention
Basin
, Sacramento Regional County Sanitation District, CA
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| 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 May
2008.
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San
Juan Creek Lift Station, Santa Margarita Water District, Las
Flores, CA |
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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 January 2004. |
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| Stormwater
Consulting and Engineering Services,
Mission
Bay
Development Authority, Catellus Urban Development Corp, San
Francisco, CA
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| 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 2003, 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 $5 to $6
million.
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Recycled Water Pump Stations,
Palm
Desert
, Coachella Valley Water District,
Coachella, CA |
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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 2006. |
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