To:
From:
Re:
A. Motion:
Attachment:
Discussion:
City of Nashua, Public Works Division
Board of Public Works Meeting Date: February 24, 2022
Jeff Lafleur, Superintendent, Solid Waste Department
Change Order #1 - Landfill Engineering Services Contract
To approve Change Order #1 to the engineering services contract for the City of
Nashua’s landfills with Sanborn Head & Associates of Concord, NH in the
amount of $66,000. Funding will be through: Department: 168 Solid Waste;
Fund: Solid Waste; Account Classification: 53 Professional and Technical
Services.
Sanborn Head and Associates February 14, 2022 Budget Increase Letter
Sanborn Head and Associates (SHA) is the City’s primary engineering consultant
for landfill and solid waste related issues, including landfill gas management,
design and construction; groundwater, air and solid waste permitting; capacity
analyses; regulatory representation; and general landfill operations.
In FY 2022 the Solid Waste Department has required more engineering services
than a typical year. An applicability determination was necessary to rule out the
need for new federal rules to supersede or be concurrently needed with the
existing, NHDES-issued Four Hills Landfill Title V Air Permit. The applicability
determination required updating of landfill design capacity and emission reports
including updating our air dispersion model to include the Phase III area.
Also, due to stresses to the Phase III landfill leachate management system from
more frequent and higher intensity precipitation events beginning in summer
2021, NHDES increased the frequency of groundwater testing, the number of
sampling locations, and the number of analytical parameters (including “PFAS”).
Because of the speed at which this extra work that must be completed for
NHDES, SHA proceeded with the necessary work under the approved FY 2022
contract and has provided an updated cost to complete remaining necessary
services in FY 2022. Asa result Solid Waste Department will need an additional
$66,000 to pay for the remaining work to be completed.
SHA has demonstrated a thorough understanding of the issues and requirements
of the Four Hills facility, and provide consistent, high quality engineering and
consulting services to the department in a timely manner. They have
demonstrated superior abilities relative to regulatory reporting, permitting, design
and construction oversight. Therefore, they are considered a sole source for these
services.
