Background/Discussion
Central Fire Station was constructed in 1972, and a 100 ton chiller using R-22 refrigerant was installed to provide chilled water to the air handlers in the building. The chiller was past its useful life and was rapidly deteriorating. A leak was discovered that could not be fixed and would have led to a complete failure of the system. With R-22 refrigerant being obsolete all major repairs required the system to be updated to handle newer refrigerants.
A 1000 amp electric service and main distribution panel were also installed in 1972 to provide power for the building. This equipment was past its useful life and was found to be no longer supported by the manufacturer. Any failure in the distribution side of the panel would have left portions of the building without power.
The work for this project included the replacement of the chiller plant which consisted of the evaporator, pumps, air cooled condenser and other associated chiller components, the relocation of the chiller from inside the building and on the roof of the building to the ground on the west side of the building, the installation of a glycol loop and heat exchanger to safely bring the chilled water into the building, and the replacement of the 1000 amp electric service and main distribution panel.
There was one change order for this project totaling $14,624.30. The change order was to switch the main electrical equipment to equipment that could be readily obtained and prevent delays in the install of the chiller and other components.
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Total |
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Original Contract Amount |
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$670,515.00 |
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Change Orders (2%) |
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$14,624.30 |
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Final Contract Amount |
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$685,139.30 |
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Less Previous Payments |
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$650,882.33 |
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Retainage Due Contractor |
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$34,256.97 |
This project was added to the CIP and identified as BM-23-08 with funding from ARPA Revenue Loss Funds. The total cost of this project was $749,879.29 which includes $64,739.99 for professional services provided by HGM and Engineering Technologies Inc.