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vnb Dasign Services & Project Management of Downtown Riverfront implementation
October 31, 2019

1.4.9 - Multipurpose Trail

This subarea includes updates to the existing trail thet may include: reconstruction and
repaving of the trail if necessary or desired, pedestrian lighting, trail furn ishings, smal)
plazas for overlooks, and selected locations for public art. This may also include screening
of the power substation. VHB will rely on information from HL Turner related to floodplain
elevations and restrictions and will likely avoid adding fill as part of any trail enhancements
if possible,

VHB will also examine potential landscape enhancements along the river's edge to
enhance aesthetics and control invasives.

Product: Plans, typical crass sections, sketches and one (1) perspective as appropriate to
define the proposed improvemenis.

Lead Consultant: VHB
Support from: Halvorson, HL Turner, Lumen Design Studio, Fitzemeyer & Tocci

1.4.10 - New Floating Dock + Access Ramp.

This area will incluce the assessment and conceptual design of a new pedestrian ramp and
floating dock to provide improved river access. The ramp and dock are envisioned to be
floating to avoid concerns with filling within the floodway, and removable to prevent
winter damage. HL Turner will conduct early due diligence to determine the configuration
and feasibility of this structure.

Product; Plans, sections and sketches as appropriate to define the proposed improvements.

Lead Consultant HE Turner
Support from: VHB, Halverson

1.4.11 - Existing Trail Improvements

This sub area may include updates to the existing trail that would include: reconstrucéion
and repaving of the trail where appropriate or necessary, lighting, trail furnishings, small
plazas for overlooks or pause places, and selected locations for public art. This area may be
explored for potential flood storage in upland areas if flood mitigation is needed due to
proposed filling elsewhere.

Product; Plans, typical cross sections, sketches and one (1) perspective as appropriate to
define the proposed improvements.

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vhb Design Services & Project Management of Downtown Riverfront implamentation
October 31, 2018

Lead Consultant VHB
Support jrom:; Halverson, HE Turner

1.4.12 - Riverbank Restoration + New Access

This sub area will likely include enhancing the space between the paved trail and the
water's edge. VHB will examine potential improvements along the river's edge to enhance
aesthetics, improve visibility and access to the river, conduct bank stabilization, and
potentially treat stormwater. Thera may also be opportunities for small overlooks, and
selected locations for display of public art, signage and lighting. The City is currently
addressing the invasives problem in advance of this project, but there may be
opporiunities to modify the ground cover on the banks to mitigate invasives long term.

VHB will rely on guidance from HL Turner on floodplain elevations and restrictions on
filling,

Product: Include up to twa (2) design aliernatives including plans, tynical cross sections,
sketches and one (1) perspective as appropriate tc define the proposed improvements.
Lead Consultant: VHB

Support jrom: HL Turner, Halverson

1.4.13- ADA Accessible Ramp to Cotton Transfer Bridge

An ADA accessible bike/pedesirian ramp will be developed to connect the ground level
multiuse path up to the Cotton Transfer pedestrian bridge. The intent will be to utilize
similar design elements as the existing ADA ramp on the opposite side of the river. The
work will be done with consideration for avoiding impacts to the floodplain and tloodway.
VHB will complete the cesign with input from Halvorson and will coordinate with Lumen
Design Studio and Fitzemeyer & Tocci for lighting the structure. This project component
may be a good candidate for an accelerated schedule and “early success" assuming
environmental permitting will not hold it back.

Produci: Provide up to two (2) design alternatives including pians, sections and sketches as

appropriate to define the proposed improvements.

Lead Consultant: VAB
Support from: HL Turner, Lumen Design, Fitzemeyer & Tocci

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ho Design Services & Project Management of Downtown Riverfront Implementation

October 31, 2014

L414 - Concapt Design for Trail.

This sud area includes the concepiual design of a future trail that will connect wesierly
toward the broad Street Parkway and possibly beyond. The design will also account for a
potential future multi-use bridge conneciion across the river, Including planning for likely
structure support locations. This area will require close coordination with the land owner to
Getermine how the trail would integrate into their development plans.

Product: Provide up io two (2) design alternatives including plans, typical crass sections, and
sketches as appropriate to define the proposed improvemenis,

Lead Consultant: VHB
Support from: Halvorson, HSI

1.5 River Hydrology

Any of the design that would result in fill within the floodplain and Tloodway must be
coordinated with HL Turner since they will maintain the river hydraulics model.

HL Turner will develop 2-, 5-, 10-, S0-, 100- and 500- yaar peak Nashua River flows using
data/analysis of stream flow records from the USGS" Pepperell, MA gage, transposed downriver
to the project site.

HL Turner will create a project design river hydraulic mode! using the current effective FEMA
HEC-RAS model, and determine flow-water surface elevation protiles for the 2~through 500-year
peak river flows, and the FEMA regulatory floodway zone.

Based on ihe agreed upon project design flocd resiliency and structural criteria, HL Turner will
select and insert the design Concept Plan features into the project design hydraulic river model.

HL Turner will provide VHB and the Project Team the results of the hycrautic impacts (ie, water
surface elevation rises, floodway impacts and river velocity increases) identifying impacts and
recommendations on how to deal with the impacts (le. removal or reorientation of certain plan
features).

Lead Consultant: HL Turner
Support jram: VHB, Halyosan
Estimated Duration: 10 weeks

1.6 Lighting

itis understood that the majority of the conceptual Riverfront lighting design has already been
advanced under an existing City contract by Lumen Design Studios with support from
Fitzemeyer & Tocci for power supply. There may still be a need to involve these team members

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October 31, 7019

as the conceptual design of the entire project progresses. It will be important to integrate their
current lighting designs into any new work planned under this profect. The current
understanding ts that most if not all of the proposed Riverfront lighting will be built as part of
this project.

Product: Plans, details and images to illustrate the proposed conceptual imprayemenis.

Lead Consultant: Lumen Design Studio
support from: Fitzemeyer & Tocci, VAB
Estimated Duration: 8 weeks

i7 Wayfinding

The City is currently advancing a downtown waytinding plan designed by others. For the
Riverfront project VHB will at most identify the conceptual recommended locations for
wayfinding signage during the conceptual Stage, but actual wayfinding sign development will be
advenced in a later phase. For Phase 1 the waytinding efforts will only include identifying
conceptual sign placement locations and potential general conteni,

Lead Consultant: VAB
Support from: Halvorson
Estirnated Duration: 1 week, toward the end of Phase 1

LS Permittina Considerations

Permit applications will be prepared after Phase 2, but during Phase 1 the design team will be
cognizant of the potential permitting implications of every aspect of the design when important
design Gecisions are being made. Section 7 of the Riverfront Plan included a relatively
exhaustive evaluation of the permitting landscape for this project. As the design prograsses,
however, VHB environmental specialists will advise tha design team relative to any permitting
implications. In addition, The HL Turner Group will provide crucial input on any in-stream or
shoreline work that could potentially affect flood levels, # su b-projects are identified for
accelerated schedules it will be important to demonstrate that they have independent utility and
can be permitted on their own rather than waiting for the entire project to be permitted.

Lead Consultant: VHB
Support jrom: HL Turner, Halvorson
Estimated Duration: throughout Phase 1

1.9 Conceptual Cost Estimating

VHB will manage and assemble cost estimates for each of the project components fram the
design team members in their respective disciplines, The HL Turner Group will provide costs for

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ho Design Services & Project Management of Downtown Riverfront Implementation

October 31, 2019

the propased boardwalk and in-water features, and VHB and Halvorson will provide costing for
site-civil, ADA ramp, paths, streetscape, and landscape features. Cost estimates will be
conceptual at this early stage and based on major tems and appropriate contingencies. We
anticipate aligning the cost estimates with each of the so called “sub-projects” that evolve from
the conceptual design such that they could easily be advanced on different tracks to
construction if a need arises due to funding or permitting constraints or a desire by the City to
break out individual projects.

The design team will recommend contingency amounts in light of rapidly rising construction
pricing. Experienced engineering and design staff will perform quality reviews of the estimates
to help ensure that relevant factors affecting price are considered. VHB will also advise the City
on potential risk factors associated with various project components because of the relatively
limited design development during the conceptual design phase,

Product: liemized conceptual construction cost estimates broken down by sub-project areas.

Lead Consultant: VHB
Support from: All
Estimated Duration: 3 weeks at the end of phase 1

1.120 Pubiic Engagement

Thé proposed approach to public engagement during Phase 1 will be multipronged and
relatively low key, as advised by the City. We do not envision nolding workshops since there was
heavy public involvement during the development of the Riverfront Plan. For Phase 1 we instead
propose to hold one public meeting that will essentially be a project update and an opportunity
fer additional input and interaction. We also propose to participate in one City Leaders meeting
at which the design team will present to the City's ‘eacdership and internal stakeholders.

Design team members will also opportunistically attend other events in the City to show a
presence and to informally interact with the public. The level of effort for this task is assumed to
be minima! and would typically include staffing a table with project graphics at events such as
farmer's markets or other seasonal public events. Attendance at two events is assumed.

The last method of engagement would include posting project information on the city’s website,
as opposed to using the services of a third-party public relations firm such as co-Urbanize. We
assume attendance at up to three public events during the Conceptual phase.

The design team understands the importance of economic development and will provide the
City with graphics and other collateral materials that can be used to promote the riverfront
project to developers and prospective tenants. This will include renderings and 3D visualizations

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October 31, 2079

that will have alreacly been developed as part of the conceptual cesign and specifically for the
pubiic engagement process and will also be used for social media curing this phase.

Lead Constliani: VAB
Support from: Halverson, HSI
Estimated Duration: Continuous, and public and stakeholder meetings in second half of Phase 1.

Li2 Phase 1 Project Meatings

The design team will attend reguiarly scheduled project meetings with the City at which a range
of design and project cevelopment tapics will be discussed. These meetings will generally be bi-
weekjy conference calls, with an assumed three (3) face-to-face meetings with key design team
and City staff members for when plans, graphics and campiex subjects will be reviewed, One (1}
stakeholder meeting is included as well. We also envision informal drop-in meetings as needed
and sharing desktops electronically to seek answers quickly during the design.

One (1) working Design Team Meeting is included near the start of the project to collaboratively
work through detailed design scope and tasks. We assume there will be eight (8) scheduled
project coordination calls with the City during Phase 1.

Lead Consultant VHB
Support from: AH
Estimated Duration: Throughout Phase 1

COMPENSATION

VrIB and its subconsultants will perform the Scope of Services on a time and materials basis. The
estimated Upset Limit for this Scope of Services is $ 437,653. including labor, overhead, profit
and direct expenses. VHE direct expenses will be billed at their actual cost without markup and
VEB's subconsultanis will be billed at their actual costs plus 5% administrative fees.

VHB $ 138,690.
Halvorson design § 68455.
HL. Turner § 99.560.
Hayner/Swanson Inc (HS) $ 82,100.
Lumen Design Studio § 8,550.
Fitzemeyer & Tocci $ 26,158.

Acministrative Fees on VHB Subconsultants (5%) $ 14,200.
PHASE 1 CONTRACT AMOUNT: § 437,653.

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vivo Design Services & Project Management of Downtown Riverfront Implementation
duly 31, 2020

AMENDMENT FOR PROFESSIONAL SERVICES
BETWEEN
VANASSE HANGEN BRUSTLIN, INC.
AND
THE CITY OF NASHUA, NEW HAMPSHIRE

DOWNTOWN RIVERFRONT PROJECT

July 31, 2020

The following amends the existing agreement between the City of Nashua and Vanasse Hangen
Brustlin, Inc. (VHB) for the Nashua Downtown Riverfront Project dated 12/12/2019. This
amendment is subject to the terms and conditions of the original contract.

PROJECT LIMITS

The project limits have expanded from those described in the original contract. By way of this
amendment the project boundaries along the Nashua River are expanded to include the
northern riverfront east of the Margaritas restaurant to and including the pedestrian walkway on
the PanAm bridge, and along the south side of the river from Main Street east past the PanAm
bridge to Temple Street. The project area continues to include the north and south sides of the
river from Pine Street and the Broad Street Parkway eastward to Main Street.

SCOPE OF SERVICES

The scope of services covered by this amendment inciudes the work under the following phase:
2 Phase 2— Preliminary Design (Schematic Design)

The scope of services for Phase 3 Final Design (Design Development) will be added by contract
amendment at a later date when the scope is well defined.

PHASE 2 — PRELIMINARY DESIGN

The preliminary design phase will build on the work and design decisions made in the phase 1
conceptual design phase. Whereas the conceptual design was largely a 2-dimensional (2D)
design with assorted sketches, details, visualizations and plans, the preliminary design will evolve
into a 3-dimensional (3D) design. This will be done using the survey base plans provided by
rlayner-Swanson Inc. (HIS) working directly for the City. Preliminary design will only commence

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2 Design Services & Project Management of Downtown Riverfront Implementation

July 31, 2020

on segments of the project when survey becomes available. VHB and the design team will rely
on the completeness and accuracy of the materials and data that are provided by HSI.

The primary objectives of the preliminary design are as follows:

e Define the limits of work so environmental permits and property agreements can be
developed in the next phase,

e Define all the proposed improvements to a level where cost estimating will be
meaningful, Se

e Preliminary cost estimating to ensure that the design program is affordable within the
available funding.

The products of the preliminary design will include 3D design plans developed to sufficient
detail to achieve the above objectives. This phase does not include detailed grading, stormwater
treatment or management, drainage or traffic studies or environmental testing.

lt is proposed that a mid-preliminary design reassessment will be conducted with involvement
trom the design team, City staff and HSI to ensure that the scope and fee in this amendment are
adequate and appropriately distributed and that the project is tracking as envisioned. Pending
important design decisions will be identified and the scope will be adjusted as appropriate. In
addition, consideration will be given to the project development and implementation process.
The construction management (CM) approach will be considered for portions or all the project,
and logical project component groupings will be evaluated. An alternative would be to bring in
a construction firm on an advisory basis at this stage to provide input on means and methods
and costs for the more complicated shoreline aspects of the project. This would likely be
beneficial as the project enters permitting.

Estimated Duration: 12 weeks

2.1 PHASE 2 - PRELIMINARY DESIGN

2.11 Phase 2 Initiation
VHB will organize a brief phase 2 kickoff meeting with City staff, HSI and design team leaders.
2.12 Preliminary Design Plans

It is anticipated that the overall project will be broken into sub-project areas that may or may
not proceed under differing schedules because of factors such as property impacts, permitting,
complexity, funding and delivery methods. During conceptual design the overall project was
broken into 17 project areas, or components as shown in the figures that follow. The preliminary
design scope of services for each project component is described in reference to the project
component numbering shown in the figures.

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VAG Design Services & Project Management of Downtown Riverfront Implementation
July 31, 2020

Project components west of Main Street:

Project Sub Areas
Pad nhmnecinernts te Pine Strest

Factery $5 Extension ininrgvements

Para dala & neat Fark
improvements. Revie Water St anc!
factory 3t Parking Layout.

Seu Buarhyelh & Aare

Renigvation to Bicentennial Park
Mew Scardwatk B Rarip lo tain St.
Multipurpose Poth Improvernents

Substation Serening

Boardyalh Connecter and loeting Dock

igs Potentral Trall anproverents f Nodes

SELy Potential Riverbank Enhancemenss

Boe Mew AGA Rang bo Cotton
Transfer dridne

Project Sub Areas

Riverfront Path around BAE Raptsee and Widen ADA Ramp

Rehad Ped Walkway on aridge

» Struttural Seardwalk, Rainp and Path

Southside Trail Imprevemients Ahematlve Route on Pearson Ave.)

July 34, 2020

Following are descriptions of the proposed scope of services specific to each project component
shown above.

2.12.1 - Factory St. Extension Ped Access to Pine Street

This task has evolved to include a new ped crossing on Pine Street with appropriate
pavement markings, signage and possibly flashing beacons. VHB will complete this
preliminary design. Minor streetscape modifications at the entrance to Factory Street
Extension that would give the appearance that the street is intended for pedestrians have
been considered, but the assumption at this time is that the area will not be improved until
after the redevelopment of the Picker Building since their plans are still pending.

Lead Project Team Consultant: VHB
Support from: Halvorson

2.12.2 - Redesign of Factory St Extension:

This area will include modifications to the existing Factory St Extension to better
accommodate pedestrians and bicyclists, but to continue to provide access for emergency
vehicles and maintenance operations. The improvemenis are expected to include lighting,
new pedestrian railings, planters and possibly dumpsier screening. The design does not
include an over-water section of path to preserve parking in the vicinity of Perk de la
Renaissance, but rather assumes that some parking will be displaced to make room fora
path connection, as discussed with the property owners.

Halvorson will do all the preliminary streetscape design reflecting on the conceptual
design images, and VHB will provide input on the railings and the roadway reconstruction
typical section. Detailed plans and grading are not included in this phase.

[t is assumed the design will not commence uniil the City obtains an answer from the
Millyard Associates on the disposition of the existing sewer line under the roadway since
that could affect the planned improvements. This scope of services does not currently
include sewer evaluation or design.

Lead Consultant: Halvorson
Support from: VHB

2.12.3 - Parc de la Renaissance Design and Water and Factory St Parking

The preliminary design in this area will include further development of the park design.
The design will include filling lands adjacent to Water Street to create an amphitheater,
new pathways, revised parking, waterfront plazas and landscape enhancements that
include planting, hardscape, street furnishings and lighting. This area may also be explored