April 7, 2021 Page 3
20210407 Nashua Phase III Stage 2 Proposal-Rev1.docx
SCOPE OF SERVICES
Task 1 Design Documents
Sanborn Head will prepare Design Documents that will be included with an application fora
Type II Modification to Solid Waste Management Facility Permit (see Task 3). We anticipate
that the Design Documents will include the following components:
=» Technical Specifications;
=» Construction Drawings (Drawings);
=» Supporting Calculation; and
=» Construction Quality Assurance Plan.
The Drawings will be based on the “Phase II] Construction Drawings,” approved by the
NHDES on December 5, 2020. Plan sheets and details related to the construction of Phase III
Stage 1 will be eliminated, and the existing conditions will be updated to include the Stage 1
as-built information. As required by Permit Condition 10, Sanborn Head will prepare the
following under this task:
« Additional details related to the construction and connection of the zigzag liner system;
and
» A calculation package specific to the anchor trench pullout and zigzag liner system
settlement calculations based on ultimate settlement.
Sanborn Head will prepare technical specifications related to the Phase II] Stage 2
construction materials. Because the majority of the Phase II] operating components were
installed as part of Stage 1 (i.e, power, pumps, riser building, etc.) the Phase II] Stage 2
technical specifications will be limited to Site Work (Division 2), Concrete (Division 3), and
Mechanical (Division 15).
Sanborn Head included budget to prepare for and attend an online teleconference (i.e.,
Microsoft Team meeting) with the NHDES soon after we receive authorization to proceed
from the City to discuss our understanding of the Phase II] Stage 2 permit conditions. This
meeting will serve as a kick-off to the project and to inform the NHDES of the City’s timeline.
Following the NHDES meeting, Sanborn Head will prepare an Opinion of Probable
Construction Cost for Phase II] Stage 2 based on the costs associated with the construction
of Phase II] Stage 1. Please note that Sanborn Head is not a professional cost estimator,
therefore, our opinion should not be considered equivalent to the nature and extent of the
service a professional cost estimator would provide.
Task 2 Operating, Closure, and Financial Assurance Plans
In accordance with Permit Conditions 10 and 19, the current Operating, Closure, and
Financial Assurance Plans need to be updated specific to the addition of Phase III Stage 2.
This task will focus on developing an Inspection, Monitoring, And Maintenance Protocol
(Protocol) that will be included in the updated Operating and Closure Plans. As detailed in
Permit Condition 10, this Protocol will identify:
SANBORN HEAD
