To:
From:
Re:
D. Motion:
Discussion:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: February 29, 2016
David A. Simmons Superintendent
Wastewater Department
NWTF — Rockwell Roofing — Change Order 2
To approve change order #2 of the construction contract for the NWTF Roof
Replacements Project contract to Rockwell Roofing, Inc. in the amount of
$25,723. Funding will be through Department: 169 Wastewater; Fund: WERF:
Account Classification: 81 Capital Outlay/Improvements.
The original contract for Rockwell Roofing to replace the roofs on eight buildings
at the Wastewater Treatment Facility is for $382,500. Change order 1 was to
install new roof drains on the buildings in an amount of $1,547.50 to bring the
new contract value to $384,047.50.
Following completion of the newly installed roofs, rainwater could still enter the
Admin Building it the Lab area. It was determined the water is entering through
gaps in the original coping that was installed with the original building in 1972.
The entire coping needs to be replaced on the roof in the Admin Buildings. In
addition, there are gaps in the concrete roof coping in the Grit Building that need
to be removed and resealed. Rockwell Roofing has developed a cost proposal for
these 2 items in the amount of $25,723 as shown on the attached cost proposals.
The Wastewater Department has reviewed Rockwell’s costs for both items which
appear to be in line with this type of work. The new value of their contract
following this change order will be in the amount of $409,770.50.
The roof replacement project is a scheduled replacement identified in the
wastewater equipment replacement fund (WERF), asset ID: RR
