Agenda

ITEMS NOT INCLUDED

1. More meetings than identified in basic and additional services.

2. Construction drawings and specifications. (Note: At this time the City has not
defined the scope or method of project delivery, or its phasing, which would dictate
the criteria of scope and extent of these construction documents). Segments 3, 4, 6
& 11-14 all other drawings and specs.

3, Changes to the final engineering designs that are a result of issued state, federal or
city permit conditions.

A.i Geotechnical Analyses & Recommendations

TTG intends to subcontract the geotechnical engineering work to SLR International
(formerly HTE Northeast, Inc.} out of Bedford, NH. TTG has performed many similar
water/land projects with SLR support.

13.7

13.8

13.9

13.10

Design the new floating dock and gangway system including intermediate supports.

Re-examine the “0.00 ft rise” river model with the final design pile features to
confirm conformance.

Use the river model to assess pile erosion and scour, ice, and woody/miscellaneous
debris loadings.

Prepare final design drawings and specifications for City review and approval.

Segment 14 — Renaissance Park Improvements

14.1

14.2

14.3

14.4

14.5

Segment 10 —- Replace and Widen ADA Ramp Below Library

No TTG final engineering required.

Segment 11 — 58-60 Main Street Boardwalk and Ramp

11.1 Design the final boardwalk bracket connections for the building.

11.2 Design the transition corner from the bracketed boardwalk to the parking lot ramp.
11.3. Design the ramp boardwalk and supporting piles.

11.4 Evaluate riverbank slope protection for erosion and scour.

11.5 Prepare final drawings and specifications for City review and approval.

Segment 12 — Bicentennial Park Renovation

6.2 Verify using the river hydraulic model that there continues to be “0.00 ft rise” with
the redesigned elevated walkway piles.

6.3 Develop structural details for the boardwalk/pile and associated connections.

6.4 Evaluate the proposed riverbank protection under the boardwalk and around the
piles by VHB or others for the potential of erosion and scour using the river
hydraulic model to determine bank velocities and soil shear.

6.5 Prepare final engineering drawings and specifications for City review and approval.

Segment 2 — Path and Riverbank Enhancements

2.1 TTG will perform additional river normal and flood analyses to evaluate the flood
resiliency of Tighe & Bond’s riverbank protection system(s) and modifications to the
park and boardwalk alignment to avoid conflicts with the Eversource substation.

Segment 3 — Substation Screening

3.1 TTG will perform final and structural design for the metal screening structure based
on Payette Architect’s March 6, 2022 design.

EXHIBIT B
The H.L. Turner Group Inc.

27 Locke Road Concord, NH 03301 =: 603.228.1122 hiturner.com

May 11, 2022

Mr. Timothy Cummings

Director of Economic Development
City of Nashua

229 Main Street

Nashua, NH 03060

SUBJECT: Proposal for Engineering Design Services
Nashua Riverfront Development Project
Nashua, New Hampshire

Dear Mr. Cummings:

Preamble

The Following is a Scope of work and Fee is for final design. It is understood and acknowledged
this will be a phased approached with an initial phase of not to exceed $350,000.00 being
authorized out of the total $404,340.00 as outlined in the following pages. The work will be
prorated accordingly as mutually agreed to in writing prior to any issuance of a notice to proceed.

It is further acknowledged and understood by all parties that no work or task shall occur without
the prior written authorization from the City of Nashua.

30.

31.

32.

jurisdiction, or is found to be in violation of state statutes or regulations, the invalidity or
unenforceability of any particular provision of this contract shall not affect any other provision, the
contract shall be construed as if such invalid or unenforceable provisions were omitted, and the
parties may renegotiate the invalid or unenforceable provisions for sole purpose of rectifying the
invalidity or unenforceability.

24.

25,

26.

27.

28,

29.

NON-WAIVER OF TERMS AND CONDITIONS None of the terms and conditions of this contract shall
be considered waived by the City of Nashua. There shall be no waiver of any past or future default,
breach, or modification of any of the terms and conditions of the contract unless expressly
stipulated to by the City of Nashua in a written waiver.