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TO: Mayor Richard C. Irvin
FROM: Jim Birchall, Superintendent Fleet & Facilities Maintenance
DATE: May 10, 2021
SUBJECT:
Aurora Police Headquarters Cooling Tower Renovation
PURPOSE:
To ensure the continual proper function of the Aurora Police Headquarters HVAC system.
BACKGROUND:
Air conditioning at the Aurora Police Headquarters, located at 1200 E Indian Trail, is achieved through the use of a water-cooled air chiller system. Air chillers are typically utilized in large commercial applications due to greater operating efficiency compared to other methods.
Cooling towers are a critical component of air chiller systems that perform the task of ejecting extracted heat to the exterior of the building. The internal hot water basin and distribution box in the existing roof-mounted cooling tower is badly corroded and could soon fail, resulting in the air chiller system not functioning correctly. This in turn would cause intolerably high interior air temperatures.
DISCUSSION:
In order to ensure the continued function of the air chiller system, the cooling tower requires renovation including replacement of the corroded hot water basin and distribution box assembly. Unlike the existing assembly, the replacement will be constructed of stainless steel which is stronger and naturally averse to corrosion.
F.H. Paschen, S.N. Nielsen & Associates LLC has proposed to renovate the cooling tower through the City of Aurora Job Order Contracting Program (JOC) for $110,119.16. The quotation also includes the installation of a second access ladder to facilitate regular periodic maintenance, along with the inspection and adjustment of the remaining components. Work will be performed by State Mechanical Services of Aurora, IL who submitted the lowest most responsible bid.
$8,288.54 (7%) of the quoted price will be refunded to the City as prescribed by the JOC.
The JOC proposal and a virtual image of the cooling tower are attached.
This project was an approved 2020 Decision Package held due to Covid. The funds are available in the 2021 budget in account 340-4010-417.38-05.
F.H. Paschen, S.N. Nielsen & Associates LLC is not indebted to the City.
IMPACT STATEMENT:
N/A
RECOMMENDATIONS:
I recommend that the City Council adopts a resolution authorizing the renovation of the air chiller system's cooling tower at the Aurora Police Department Headquarters by F.H. Paschen, S.N. Nielsen LLC through the City of Aurora JOC program.
cc: Infrastructure and Technology Committee
CITY OF AURORA, ILLINOIS
RESOLUTION NO. _________
DATE OF PASSAGE ________________
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A Resolution authorizing F.H. Paschen, S.N. Nielsen LLC to renovate the cooling tower at the Aurora Police Department Headquarters using the City of Aurora Job Order Contracting Program for $110,119.16.
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WHEREAS, the City of Aurora has a population of more than 25,000 persons and is, therefore, a home rule unit under subsection (a) of Section 6 of Article VII of the Illinois Constitution of 1970; and
WHEREAS, subject to said Section, a home rule unit may exercise any power and perform any function pertaining to its government and affairs for the protection of the public health, safety, morals, and welfare; and
WHEREAS, air conditioning at the Aurora Police Headquarters, located at 1200 E Indian Trail, is achieved by a water-cooled air chiller system; and
WHEREAS, the internal hot water basin and distribution box in the existing roof-mounted cooling tower is badly corroded and could soon fail; and
WHEREAS, in order to ensure the continued function of the cooling tower, the cooling towers require refurbishment including replacement of the corroded hot water basin and distribution box assembly; and
WHEREAS, F.H. Paschen, S.N. Nielsen & Associates, LLC has proposed to renovate the cooling tower through the City of Aurora Job Order Contracting Program (JOC) for $110,119.16; and
WHEREAS, funding for this project is available in account 340-4010-417.38-05; and
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Aurora, Illinois, as follows: that the City Council of Aurora, Illinois approves F.H. Paschen, S.N. Nielsen, LLC to renovate the cooling tower at the Aurora Police Department Headquarters using the City of Aurora Job Order Contracting Program, for $110,119.16 and hereby authorizes the Purchasing Director to issue the necessary purchase orders.