To:
From:
Re:
E. Motion:
Attachments:
Discussion:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: February 24, 2022
David L. Boucher, Superintendent
Wastewater Department
Class A Biosolids Upgrade - Preliminary Design Phase Services
To approve the contract with Wright Pierce to provide a Class A Upgrade
Evaluation Preliminary Design Plans and Specifications in an amount not to
exceed $199,886.60. Funding for this contract will be through Department: 169
Wastewater; Fund: Wastewater; Activity: WW Class A Biosolids Upgrade.
Wright Pierce Scope of Work and Fee Schedule
The Nashua Wastewater Treatment Facility currently produces Class B biosolids
which are beneficially reused on farmland throughout New Hampshire, and has
been used in Massachusetts as well.
Regulations have been evolving, resulting in communities making rapid decisions
to limit or ban Class B biosolids for beneficial reuse. This results in the market
changing, and significant price increases are projected. Our current biosolids
management contract will expire at the end of this fiscal year and our expectations
are that the bids will be significantly higher.
With these factors in mind, moving to a Class A product will reduce the volume
hauled, by more than half. The cost should also decrease, and our disposal options
will increase.
Wright Pierce did an initial evaluation of wastewater’s solids during the Facility
Plan project, completed in 2021. Since Wright Pierce has already started the
evaluation, this project becomes a continuation of their work, allowing for a faster
design and lower overall cost of the project.
Wright Pierce’s proposal covers the full evaluation and preliminary design of the
Class A upgrade and will be able to move quickly to a final design. This approval
is for an amount not to exceed $199,886.60.
