To:
From:
Re:
G. Motion:
Attachments:
Discussion:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: December 20, 2018
David L. Boucher, Superintendent
Wastewater Department
Wet Weather Influent Gate Repair
To approve the purchase of a new hydraulic cylinder and maintenance on the
hydraulic power units for the influent gate in the Wet Weather Facility from New
Hampshire Hydraulics of Merrimack, NH in an amount of $19,956, Funding will
be through: Department: 169- Wastewater; Fund: Wastewater-Collection:
Activity: 54 Property Services.
New Hampshire Hydraulics Quote
The Wet Weather Facility at the Wastewater Treatment Facility has a hydraulic
gate that normally remains shut until storm flows and triggers it to open. The
piston that opens this gate has a severely corroded casing and leaks oi] at the base
when the piston opens and closes the gate. The piston and hydraulic hoses need to
be replaced and maintenance is also needed on the hydraulic power units inside
the facility.
Five hydraulic piston repair companies were contacted on this project. Only New
Hampshire hydraulics came back with a quote for this work. Their quote of
$19,956 includes a new piston, hydraulic hoses, fitting, and maintenance on the
gate hydraulic power unit and the two rake arm power units inside the facility.
They will also provide technical assistance and construction oversight of TBuck
construction, who will remove the existing piston and gate and subsequently
install the new one.
