To:
From:
Re:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: July 26, 2016
David A. Simmons, Superintendent
Wastewater Department
NWTF Air Handler Replace Project
D. Motion: To approve the design phase services for the Air Handler Upgrades project to
Attachments:
Discussion:
Wright Pierce of Topsham, ME in the amount not to exceed $67,093. Funding
will be through: Department: 169 Wastewater; Activity: Control Building
HVAC Upgrades.
Wright Pierce Scope of Work and Fee.
The Wastewater Treatment Facility (WWTF) has air handling units designed
to bring fresh air in from outside and either heat the air (during winter) or cool
it (during warm conditions) depending on location. Most of these units were
installed during the 1972 or 1988 plant upgrades. Although maintenance and
repairs have occurred over the years, some units have failed beyond repair.
This project proposes to replace 4 units, 2 in the contro] building that provide
both heating and cooling and one in each of the sludge processing and grit
buildings. In addition, the design will include a new air conditioning unit for
the 1* floor office in the control building that houses the computer server.
Currently an inside portable AC unit is being used to cool that office until a
permanent installation is made.
A request for qualifications (RFQ) was sent to 6 consultants. Two of the
consultants expressed an interest in the project and were interviewed. A
committee picked Wright Pierce as the consultant for this project, based on
their better experience and familiarity with the NWTF.
The project will have various phases during the design beginning with a
preliminary design report (PDR), which will be completed within 30 days of a
signed contract. Next is the 65% design completion which will be completed
within 25 of the PDR. Next is the 90% design which will be completed within
25 days from the 65% design. Construction documents will be ready in seven
days following acceptance of the 90% design. Overall, Wright Pierce should
have construction documents ready in about 3 months following a signed
contract.
Wright Pierce is ready to begin this project and has developed an accelerated
schedule for having bid documents completed in a timely manner. They have
completed numerous HVAC projects in many wastewater plants including
some at the NWTF during past upgrades and are well qualified for this work.
