To:
From:
Re:
B. Motion:
Discussion:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: January 30, 2020
David L. Boucher, Superintendent
Wastewater Department
Energy Recovery Upgrade ~ Methuen Construction Change Order #4
To approve Change Order #4 to the Energy Recovery Upgrade contract with Methuen
Construction Company of Plaistow, NH in an amount not to exceed $49,167.26 for
structural and electrical modifications to the energy recovery room. Funding will be
through: Department: 169- Wastewater; Fund: Wastewater; Activity: Energy Recovery
Upgrade Project.
The energy recovery upgrade project involves upgrading all the major components in the
energy recovery room with new generators, piping, heat exchangers, pumps, controls and
associated electrical components. The contract with Methuen Construction was originally
in the amount of $1,787,378. Change order 1 was for relocating a water expansion tank
and installing pump disconnect switches in the amount of $16,742.40. Change order 2
was for new LED lights and painting the room in the amount of $21,181.16. Change
order 3 was to relocate conduit in the floor slab in the amount of $10,710. The total
contract amount following CO’s 1, 2 and 3 comes to $1,836,011.56.
Change order 4 consists of 3 items. The first item (PCO003) is for new pipe supports into
the existing concrete ceiling in the amount of $19,000.87. The second item (PCO008) is
for modification to the existing floor to support one of the 2 new generators in the amount
of $9,416.00. The third item (PCO009) if for electrical modifications to the MCC, starters
and other electrical components in the amount of $20,750.39. The total of these items
comes to $49,167,26 bringing the new contract value to $1,885,178.82.
