Title
GLWA-CON-225
Orion Pumping Station Improvements
Body
Agenda of: March 28, 2018
Item No.: 2018-636
Amount: $1,747,000.00
TO: The Honorable
Board of Directors
Great Lakes Water Authority
FROM: Sue F. McCormick
Chief Executive Officer
Great Lakes Water Authority
DATE: March 7, 2018
RE: Contract No.: GLWA-CON-225
Orion Pumping Station Improvements
Vendor: Detroit Contracting, Inc.
MOTION
Upon recommendation of Cheryl Porter, Chief Operating Officer - Water and Field Services, the Board of Directors (Board) of the Great Lakes Water Authority (GLWA), authorizes the Chief Executive Officer (CEO) to enter into Contract No. GLWA-CON-225, "Orion Pumping Station Improvements" with Detroit Contracting, Inc., at a cost not to exceed $1,747,000.00 for a duration of fifteen (15) months, and authorizes the CEO to take such other action as may be necessary to accomplish the intent of this vote.
BACKGROUND
GLWA's Orion Pumping Station is a water booster pumping station located in Auburn Hills, Michigan. The Orion Pumping Station was constructed in 1961 and at that time was equipped with three line pumping units. A fourth line pumping unit was installed at the station in the 1990s. The Orion Pumping Station boosts pressure through a 30-inch diameter transmission main to maintain contract pressures at master meters OT-01 and AH-05 for the Charter Township of Orion and the City of Auburn Hills, respectively (see Figure 1 below).
Figure 1: Orion Pumping Station Service Map
The current capacities of the four line pumping units at the Orion Pumping Station are provided in Table 1 below.
Table 1: Existing Pumping Unit Capacities - Orion Pumping Station
Line Pump
Flow (MGD)
Total Head (FT)
Motor Size (HP)|1010|2.0
85
40|1010|4.0
85
75|1010|4.0
85
75|1010|4.0
85
75
Abbreviations: MGD (million gallons per day), FT (feet), HP (electrical horsepower)
The total installed pumping capacity of the Orion Pumping Station is 14 MGD at 85 feet of total head while the f...
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