Design-Build Stratmann Pump Station Replacement

Missouri American Water operates the Stratmann Pump Station, which serves the majority of St. Louis County. The pump station, originally constructed in 1926, lacked redundancy, was inefficient to operate
and, due to the age of the facility, was difficult to find replacement parts for much of the equipment.
Because of these difficulties, Missouri-American Water Company decided to replace the pump station in its
entirety and hired CMT to develop a plan for the replacement of this critical infrastructure.

CMT provided Facility Planning and Preliminary Engineering for the replacement of the 70 MGD Stratmann
Pump Station. The project included extensive Equipment Evaluation. Comparisons of major equipment included types of pumps, number of pumps, motors, variable frequency drives, Medium Voltage (4160V) versus Low Voltage (480V) power, and 20-year present worth costs.

An alternatives analysis was conducted to evaluate constructing the replacement pump station at three
separate locations. The analysis compared several factors including land acquisition, easements, the ability
to connect to the existing distribution system, electrical power, sequence of construction, construction
phasing, operational impacts during construction, and construction costs.

DESIGN-BUILD DELIVERY

Missouri American Water elected to move forward with the implementation of the pump station replacement
project using a Design-Build approach. The Goodwin Brothers and CMT team was selected to deliver the
$14 million project, which is now complete.