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' @ Foundry Street
i Building Trust. Rngineering Success, Concord, NH 03301
Mr. Kerry Converse February 18, 2019
Environmental Engineer
Nashua Division of Public Works, Solid Waste Department
840 West Hollis Street
Nashua, NH 03062
Re: — Proposal for Construction Quality Assurance Services
Phase IH Construction Project
Four Hills Landfill
Nashua, New Hampshire
Dear Kerry:
Sanborn, Head & Associates, Inc. (Sanborn Head) is pleased to provide the City of Nashua
(City) with this proposal to provide construction quality assurance (CQA) services associated
with the construction of Phase II] (Project) at the Four Hills Landfill in Nashua, New
Hampshire. We understand the Project involves: (i) modifying and improving site drainage
and stormwater treatment features; (ii) excavating on-site soils to create the proposed Phase
Ill base grades; (iii) placing and compacting soil fill to achieve the Phase III sideslope
subgrade; (iv) processing, placing, and compacting on-site low-permeable soil within the
Phase III area; (v) constructing the Phase III primary and secondary liner and leachate
collection systems; (vi) constructing the Phase III Sump Riser Building and leachate
conveyance piping; and (v) making associated connections to the Phase II leachate and liner
systems.
SCOPE OF SERVICES
Task 1 CQA Services
Sanborn Head will provide on-site CQA personnel consisting of a Site Manager and Monitors
to perform the specific monitoring and documentation services defined in the Project’s CQA
Plan. Sanborn Head’s CQA Managing Engineer, a Professional Engineer licensed in the State
of New Hampshire, will be responsible for the implementation of the CQA services and will
oversee the on-site CQA personnel. The CQA Team will monitor the contractor’s work for
conformance with the construction documents (e.g., drawings and specifications), track the
progress of the Project, and be available to address contractor questions during the Project.
The specific services to be performed by Sanborn Head’s CQA team includes: (i) reviewing
and commenting on contractor’s submittals; (ii) documenting materials quantities installed
or items constructed by the contractor; and (iii) reviewing and commenting on contractor’s
requisitions for payment prior to submittal to the City for final approval. Sanborn Head’s
CQA Managing Engineer will visit the site regularly (typically once per week) during
construction.
SANBORN, HEAD & ASSOCIATES, INC. wwwosanbornhead.com
