The work to be done under this contract consists of the removal, disposal, and
replacement of the existing rooftop HVAC ductwork associated with the Makeup-AirUnits (MAUs) located at 2350 Market Street. Replacement ductwork and insulation shall
be furnished and installed in accordance with the technical specifications and shall
include all necessary caulking/joint sealing material. All existing duct supports shall be
reused.
The work shall also include temporary removal, storage, and reinstallation of the
existing bipolar ionization system currently installed within the supply ductwork.
Associated control panels, switches, conduits, and access doors shall be reinstalled in
accordance with the manufacturer's recommendations, and startup field services shall
be included for final inspection and approval indicating a proper installation.
To minimize impact to District staff, all required shutdowns shall be limited to nonstandard working hours (weekends or evenings after 5pm). No more than two (2) MAUs
can be taken out of service at a time. If the work associated with a shutdown cannot be
completed prior to the start of a new workday, temporary duct shall be provided by the
Contractor to allow all four (4) MAUs to be available for the duration of the District's
standard workday.
Work is bid as a Lump Sum. Final payment at the lump sum bid price shall include all
tools, labor, materials and equipment necessary to complete the work.
All work performed shall be in accordance with "Standard Construction Specifications of
The Metropolitan St. Louis Sewer District " dated 2009, except as modified herein, and
the attached Project Technical Specifications, including site exhibit (Attachment A -
Roofing Plan).
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