
COMMISSION AGENDA – Action Item No. 8e Page 2 of 4
Meeting Date: April 12, 2022
Template revised June 27, 2019 (Diversity in Contracting).
air change rate for standard use, so a higher turnover rate for the Concourse C restrooms will
maintain fresh air and lower odors for the improved passenger experience.
Adding the two temporary units will provide the additional capacity for the next five to ten
years until the future project to upgrade all the air handlers, including the addition of smoke
control, can be completed. This larger project will also replace and upgrade all the AHUs on
Concourses B and D which are at the end of useful life.
Multiple cost drivers regarding materials have increased the budget need. These additional
materials include HVAC components, seismic upgrades, roofing costs, chill water piping and
piping costs, and an increase in the cost of demolition. Both the air handling units and
associated piping have doubled in cost in the last 18 months. Lastly, a 10% market contingency
was added based on current conditions. In total, the construction bid estimate will increase by
around $1 million.
Diversity in Contracting
The project team with the Diversity in Contracting Department determined a six percent
aspirational goal for WMBE participation for the major works construction contract.
DETAILS
This project installs two new energy efficient AHUs to provide additional air capacity to
Concourse C to improve passenger experience.
Scope of Work
The project requires additional air capacity in two zones at Concourse C. To accomplish the
work:
(1) Two, 4,900 CFM AHUs will be installed on the roof of Concourse C and have heating
and chilled water connected from the campus systems, along with direct digital
controls wiring for control and monitoring of the equipment. A major public works
construction project will be used to perform the work.
Schedule
Activity