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Ms. Sarah Marchant
July 15, 2019
Page 3

5. Agreement

CMA Engineers’ standard terms and conditions are attached and shall apply except where specifically
modified above. This agreement, including Exhibit A (Scope of Work) and Exhibit B (Fee Estimate), and
all associated attachments, may only be modified in writing, signed by all parties. We note that City
acceptance of this agreement is subject to review and concurrence of the NH Department of

Transportation.

We appreciate this opportunity to work with the City of Nashua on this important project. If you have any
questions or need additional information, please don’t hesitate to contact us.

Very truly yours,
CMA ENGINEERS, INC.

Sit

illiam A. Straub, P.E.
Principal

JJB:ams

Accepted and Authorized to Proceed:

City of Nashua, NH

Enclosures: Exhibit A: Scope of Services
Exhibit B: Fee Proposal
CMA Engineers, Inc. Terms and Conditions

P-2947-Nashua-C-190722-CMAQ Agreement JIB

fof Aas

Jason J. Beaudet, P.E.
Project Manager

Date

DETAILED PROJECT SCOPE

The scope of the work for the design includes those elements specifically included in the City of
Nashua’s original CMAQ grant application, as approved by the NHDOT to further expand the Heritage
Rail Trail, alleviate congestion on East Hollis Street, and enhance pedestrian/bicycle facilities in one of

the most densely populated areas in the Nashua region. The project will construct a 10’ wide paved
multi-use trail along the former rail line from Main Street to the Denton Street intersection, provide
safe ADA compliant crossings, provide lighting along the trail, and restore/repurpose the Commercial
Street Bridge for pedestrian/bicycle use. The scope is additionally supplemented by the City’s Request
tor Qualification (RFQ02676-021519, 1/3/2019; RFQ0276-041919, 3/15/2019); review of City supplied
project related information and reviewed against the Local Public Agency Manual of the Development
of Projects (Version 3.0, March 2017). The proposed project will allow the City to complete the long
sought-after Nashua Heritage Rail Trail East.

Phase 1.0 - Engineering Stucy

7.01

1.03

Projeci Kickofi Meeting 2 Fieicd Review

An initial meeting with the City and potentially NHDOT will be held to review the purpose and
goals of the project, issues and concerns, and discuss the project schedule. All pertinent
information related to the project (City GIS and utility information, historic plans, conceptual
plans, base mapping, previous environmental NEPA documents, etc.) will be turned over for
CMA Engineer’s use. CMA Engineers will also conduct a field review at this time.

Topographic and Right-of-Way Survey

Hayner/Swanson (HSI) shall perform on-the-ground topographic survey as directed by CMA
Engineers of the area as outlined on Exhibit "A" attached. Topographic survey will be
conducted within the limits of the railroad ROW for the length of the new trail, and additional
areas at intersections to support the design of sidewalks, crosswalks, ramps, and pedestrian
signals. The services are limited to location and elevation of surface features (bridge, rails,
drainage culverts, signs, etc., including visible evidence of utilities). Horizontal Datum shall be
NAD83 NH State Plane. The Vertical Datum shall be NAVD88 US Survey Feet. Work shall be
performed for a proposed 20 scale plan with one (1) foot contours.

HSI shall perform the necessary research required to determine the limits of the former B&M
Railroad Right-of-Way. The research shall include research at the City Assessors Office, City
Engineering Department, Hillsborough County Registry of Deeds, NHDOT Bureau of Rail &
Transit, NHDOT ROW, B&M railroad records, and NH State Archives. HSI will locate physical
monumentation along the route as to be able to determine the limits of the Right-of-Way.

Loca! Concerns Meeting
A local concerns meeting will be held to allow members of the public to be informed and
provide comments about program funding, proposed schedule, project overview, and

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notential issues and concerns. This meeting will be facilitated by CMA Engineers in
conjunction with City staff and aid in the development of the project purpose and need
statement. An overview plan based on City GIS and/or available aerial imagery will be
prepared for the meeting.

1.04 Purpose cing Need Sictemen!
A purpose and need statement will be prepared from information collected at the Local
Concerns Meeting. This statement will clearly define the project goals and objectives, without
proposing project solutions. This statement will be used to measure the alternatives
developed as part of the design process.

7.05 Engineering Anaiysis
Feasibility level design plans with only minimal/essential design/detail elements will be
developed based on the project information and CMAQ application package provided by the
City, field reconnaissance, and input from the public and other stakeholders. The rail trail will
be evaluated to address minor trail profile improvements, surface improvements, drainage
improvements, ADA compliant pedestrian crossings, ROW issues/impacts, appropriate
incorporation of pedestrian scale lighting and lighting at crossings, utility issues/impacts and
to improve connectivity. The information from this analysis will be used in the development
of proposed alternatives.

Structural Evciuation and Recommencations
The existing rail bridge crossing over Commercial Street is currently barricaded but is
intended to be repurposed for use as a pedestrian overpass to connect the adjacent
sections of trail. Conceptual review has indicated that a 10-foot wide walking surface along
the bridge will be required to provide a consistent clear width along this section of the trail.
Key design criteria will be based on the requirements of the AASHTO Guide Specification for
the Design of Pedestrian Bridges and the NHDOT Bridge Design Manual. Review of
alternatives will consider safety, serviceability, materials, maintenance, constructability,
permitting requirements, economics, and aesthetics for each proposed structural element.
The following tasks will be performed during the study phase:

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a. Site Inspection and Condition Assessment
A team of two structural engineers will perform a detailed inspection of the existing
bridge superstructure members. The results of the condition assessment will be used to
determine what loading the bridge is rated to carry and whether structural repairs to
existing members will be required.

b. Structural Alternative Analysis
Based on the results of the tasks described above, feasibility level alternatives and
designs with only minimal/essential design/detail elements will be developed using the
requirements of the City and design criteria from the applicable codes.

1.87 Environmental Assessrneni
a. Initial Site Reconnaissance; Data Review; Develop Recommended Sampling Plan
Terracon will conduct a site walk-reconnaissance to visually assess the planned project
easement/alignment. Current conditions in the proposed project area will be inspected

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and photo-documented. We will also visually identify/confirm current property uses of
parcels that abut the planned project alignment and identify properties or observed
conditions that may represent potential higher risk conditions.

Terracon will review publicly available information from the New Hampshire
Department of Environmental Services (NHDES) to determine if prior contamination
and/or disposal of asbestos containing materials (ACMs) has been identified at high risk
properties located along the proposed bike path. Soil and groundwater contamination
can result from releases at various types of facilities including gas stations, dry cleaners,
and a variety of commercial/industrial operations. If contamination has been previously
identified, public records from prior investigations will be reviewed for soil profiles,
groundwater information, in-situ laboratory analytical results, geophysical surveys, and
bedrock topography.

The result of the review will be summarized in a letter report with supporting
documentation of prior investigations and exhibits depicting suspect areas of potential
impacts from contamination or ACMs. The letter report will provide recommendations
for soil sampling to be presented/called out on base/site maps of the proposed project
work zone to be provided by CMA Engineers.

b. Surficial Soil Sampling Program
Terracon’s recommended sampling plan will be determined by observations and
findings from the site inspection of the project work zone and review of publicly-
available documentation of environmental conditions in the project area. However,
based on the existing conditions, elements of the former rail bed and corresponding
ties appear to be present between sections of land from Commercial Street, easterly to
Temple Street. There is possibility that sampling may not be necessary, but due to the
desired schedule of this project it was felt that provisions should be included in the
scope to avoid delay related to attaining a contract amendment if the sampling is
needed.

Terracon will collect up to 25 soil samples by hand-tool methods to a depth of up to 1.5
feet below ground surface along the former rail bed in the previously mentioned
sections. This preliminary soil sampling program provides for the collection and
laboratory analysis of up to 25 soil samples each for Total RCRA 8 metals, polyaromatic
hydrocarbons (PAHs), volatile organic compounds (VOCs) and/or asbestos.

The results of the surficial sampling program and laboratory analyses will be
summarized in a letter report with supporting documentation of analytical data and
exhibits depicting areas of impact, if encountered, that may require special handling
and/or disposal during redevelopment activities.

1.08 Lighting and Landscape Archiiecture
Document, photograph, measure conditions in the project area to raise the level of
understanding of the site, abutting properties, and environs. Explore various rail trail and

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urban design solutions to support the development of a thoughtful, well designed, multi-
modal node downtown that is heavily used, safe, and attractive.

a. Site Reconnaissance
Document and photograph conditions as part of this effort, the following is
anticipated:
« Document observable electrical utilities and acceptable points of connection
e Document valuable assets, linkages, beneficial qualities, and overarching
opportunities
e Document noteworthy existing trees, vegetation, invasive species, etc.

b. Analysis of Existing Conditions, Opportunities, and Constraints
Collected data will be studied to uncover important issues/characteristics of the project
area and surroundings.

c. Evaluation of Design Alternatives

The focus of this task will be to advance and refine the City’s conceptual rail trail layout in
collaboration with CMA Engineers and explore a design solution for the functional and
visual enhancement of the corridor while promoting user experience in consideration of
elements identified in “a” above. Also, refer to IRONWOOD CLARIFICATIONS AND
ASSUMPTIONS. Should there be alternative design solutions for a specific area, Ironwood
will provide alternative vignette sketches for consideration.

e Explore design opportunities that will enhance the rail trail project

e Evaluate lighting for pedestrian safety, visual enhancement, security, etc.
Consider efficiency, longevity, reduced maintenance demand and light
infringement

e Provide a cursory evaluation of amenities such as benches, receptacles, bike
racks, interpretive or wayfinding signage, bollards, fencing, etc. to support the
desired activities and the corridor’s urban character

e® Prepare an order of magnitude construction cost estimate

d. Development of Proposed Action
Following receipt of City and NHDOT review comments, Ironwood will refine and
advance a single preferred scheme.

e. Illustrative Presentation Graphics
In support of the Preferred Alternative, lronwocd will prepare the following for use in
promotional materials and public presentations
® Supportive precedent examples

f. Public Presentation
Prepare for and participate in a public hearing

e. Engineering Study
Compile materials and assist with content as needed

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initial JHNy Coordinalien

Coordination efforts will take place to identify all utilities within the project. Once
determined, a working directory of contact information, preferred interface, and plan
preference will be determined for ongoing coordination.

Environmenial Documeniation
a. Data Collection

In accordance with the NHDOT’s LPA guidelines for Municipally-Managed projects
and to satisfy Federal and State regulations, we will evaluate, and document cultural
and/or environmental impacts associated with the proposed project. This evaluation
will include early communication and contact with various state and local agencies
and may include attendance at one Monthly Resource Agency Meeting held at the
NHDOT to identify sensitive resources within the project corridor and to determine
the level of agency review that will be required. A visit to NHDHR to review their
files, and preparation of a Request for Project Review (RPR) form. A copy of the RPR
form will be submitted to the City for review prior to submittal. This scope does not
include historic or archaeological specialists. Additional historic or archeological
reviews (if required) would be completed by specialized sub-consultants under a
Contract Amendment.

Permitting/Environmental Coordination

The need for environmental permits will be reviewed as part of the Engineering
Study development. Due to the scope of the project, no NHDES Wetlands, Alteration
of Terrain, or Shoreland Protection Act permits are anticipated.

c. Environmental Documentation

Projects using federal funds require that findings of the environmental review be
documented in an Environmental Study/Tracking Form. CMA Engineers will prepare
the Environmental Study/Tracking Form documents for submission to the NHDOT
Bureau of Environment to determine the level of documentation required for the
project. We assume that a Programmatic Categorical Exclusion will be required as
the final NEPA documentation for the project.

Afermatives Aricilysis

Feasibility level designs and alternatives will be futher enhanced from the engineering
analysis task with associated bullet point summaries that describe the proposed solutions
and any environmental, ROW, and utility impacts. It is assumed that up to three
alternatives/options will be developed; one alternative being no-build. Conceptual level
plans associated with each alternative will be developed and include a typical section and
general roll plan. The following information will be evaluated as part of this process:

® Description of the methodology and reasoning used to determine the proposed
layout,

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e Discussion of potential impacts related to each alternative (historical,
environmental, utilities, existing structures, Right-of-Way, etc.),

® Conceptual cost estimate, and
® Conceptual level plans for alternatives (typical section, general roll plan).

The Alternatives Analysis process will be used to recommend the most viable and
preferred alternative to advance to Preliminary Design phase. Once a proposed action is
selected by the City, the project can proceed to documenting the process for inclusion in
the final Engineering Study report.

1.12 Conceptual Engineer's Opinion of Probabie Cast (EOPC)
CMA Engineers will provide an itemized EOPC for each of the alternatives considered
using NHDOT item numbers, descriptions, materials, and construction requirements that
are contained in the NHDOT Standard Specifications {i.e., Division 200 through Division
700). The itemized EOPC will include contingencies and separate line items for
construction services in accordance with the LPA Manual.

1.13 Public Presertaiion of Fropesed Action
CMA Engineers, in collaboration with the City, will conduct a second public meeting that
will focus on the Proposed Action as approved by the Sponsor with an update on the
schedule, budget and potential neighborhood impacts. This meeting will likely be held in
conjunction with a Board of Mayor and Alderman Meeting. Minutes of the meeting will
be incorporated into the Engineering Study document. This task will also include a
meeting with the City and an additional brief meeting with NHDOT prior to the Public
Proposed Action Meeting to ensure all parties are in agreement with the proposed action
before presenting to the public.

1.14 Engineering Siudy Submission
An Engineering Study report will be developed that incorporates the following
information:

a. Purpose and need statement, including alternatives identified, evaluated, and
approved by the City.

b. Information to demonstrate that the proposed corrective effort is justified,
worth the expenditure of funds, and incorporates mitigation for impacts to
affected natural and cultural resources.

c. Summary of the existing conditions, descriptions of the existing project
location, length and width of the proposed project, type of facility, and
apparent or unique features.

d. Summary of the relevant design criteria and manuals to be utilized for the
project,

e. Existing drainage systems and how the proposed work will interact with the
existing drainage system.

f. Incorporate the environmental/historical documentation developed for the
project with associated issues.

g. Discuss the location of the ROW relative to the project footprint and identify
likely easements or takings as needed,

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h. Identify the existing utilities, summarize impacts, and determine if utility
impacts are eligible expenditures, and if not, who will pay for impacts to the
existing utilities.

i. Identify the proposed action and why this is the recommended project design.

j. Conceptual level plans of the proposed action in conformance with Section
1.11.

k. The study will summarize required permits for each alternative.

The Engineering Study report will be finalized and submitted to the City (electronic
format only) and the NHDOT (2 hard copies & electronic format) for approval, together
with Conceptual Plans, following the Proposed Action Meeting.

1.15 Project Management
CMA Engineers project manager will coordinate regularly by email and by phone with
NHDOT/City staff, subconsultants, key stakeholders, and project team members; and will
complete monthly project status reports and invoices (3 months assumed).

Phase 2.6 - Preliminary Design

2.01 Design Plans and Decumenis
Preliminary Design Plans and Documents will be developed based on the selected
proposed action developed by the Engineering Study, project information and CMAQ.
application package provided by the City, input from the public and other stakeholders,
and any comments received as part of the Engineering Study submittal review. A concise
comment review meeting with the City is included. The Preliminary design submittal will
include a set of plans depicting existing conditions, the location of trail improvements,
sidewalks, ramps, structure improvements, and drainage improvements. In addition, we
will include construction details as appropriate to properly characterize proposed
improvements.

CMA Engineers will prepare plans in accordance with NHDOT “Standard Specifications for
Road and Bridge Construction” while also incorporating any specific contract
requirements identified by the City. CMA Engineers anticipates that the Preliminary Plans
will consist of the following materials:

a. Cover Sheet: Location plan and index of sheets;

b. General Notes & Legend: Plan notes governing the project;

c. Drainage Notes: Description of drainage improvements developed in accordance
with the NHDOT Drainage Manual;

d. Detail Sheets: Depiction of the details for the project components (drainage,
sidewalk, erosion control, landscaping, grading, and miscellaneous details);

e. Structural Detail Sheets: Plan and elevation views of the bridge, typical section
showing new and existing bridge components, typical railing section, details, and
notes;

f. Typical Sections: Cross sections showing the typical improvements along the
project with dimensional and material identification;

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2.02

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2.05

Existing Condition Plans: These plans will be developed from the information
obtained during the Feasibility Study Phase of the project. These plans will show
existing topographic features, utilities, ROW limits, delineated wetlands, natural
features, Historic features and other visible information needed to construct the
proposed project;

h. General Plans: These plans will be plan/profile sheets and will include proposed
improvements related to the project (signing, striping, utilities, etc.). seven
general plan sheets (1”=20’ horizontal, 1”=4’ vertical) are assumed;

er)

i. Sign Text Layout: These sheets will contain the detailed layout of the sign
construction of those needed for this project;

j. Traffic Control Plans: Plans will be prepared as needed to facilitate the
construction of the project and satisfy the requirements of the NHDOT Traffic
Control Committee (TCC).

k. Cross-Sections: Plans showing basic cross sections at 50 ft. intervals and at critical
cross-sections (drainage crossings, utility crossings, etc.) (as needed). A total of
eight cross section sheets (1”=10');

I. Stormwater Analysis, LPA Submittal Requirements, & QA/QC: Engineering
evaluations for drainage (hydraulics & hydrology), Quality control review,
submittal to NHDOT Traffic Control Committee, submittal of crosswalk request,
and field review to resolve potential issues. Additional environmental,
archeological, and historic investigations/research are not included.

Environmenial and Historical Documentation

Per the NHDOT process and policy, the preliminary plan layout will be developed to
minimize impacts to any cultural and/or natural resources (historic features, wetlands,
etc.) identified in the Engineering Study within the project area and incorporate
commitments identified as a result of the NEPA process. A copy of the Final CE Document
will be submitted concurrently with the Preliminary Design Plans.

Permitting
Local permitting will be finalized if applicable.

ABA Compliance Coordinaiion
Proposed pedestrian facilities (sidewalks, ramps, crosswalks, signs, etc.} within the
project will be reviewed and designed in accordance with the Americans with Disabilities
Act (ADA). Design standards for project components that comply with ADA requirements
as described in the LPA manual and the latest federal requirements will include design
notes, details, elevation control and minimum width of walks.

Uitliry Cocidinaiion
All utilities within the project will be determined and a point of contact will be
established. Verification plans will be prepared from survey and supplemental
information provided by utilities, and then distributed to all utilities for review and
confirmation. Supplemental plans will be distributed for review as the project design is
developed. If conflicts arise, coordination with the affected utility and the City will begin
and continue until resolution. One on-site utility meeting is included, if needed.

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2.08 Sructural Prelirrinary Design
Based on the selected proposed action, detailed structural design will be performed,
including repairs to existing members (if necessary), removal of extraneous existing
members (as needed) and addition of new structural members (as required). CMA Engineers
will provide preliminary design parameters including layout geometry, construction details,
notes, specifications, and supporting design calculations for the selected structural
modifications to the bridge. CMA Engineers anticipates that the preliminary design will
consist of the following tasks:

a. Superstructure Modifications
Perform required analysis of any existing structural elements that will be
modified or receive additional loading as part of the addition of the proposed
walkway structure.

b. Deck Structure

Design of an ADA compliant walkway surface and any required framing to
carry proposed loads from the new deck down to the existing structure.
Determine the optimal deck elevation that minimizes approach grades and
works around existing primary structural bridge members.

c. Pedestrian Railing
Design of a pedestrian railing of similar or complimentary materials to the
proposed bridge superstructure. This task will also include the design of the
connection between the rail system and the new or existing
superstructure.

2.07 Lighting and Landscape Architecture
Advance the preferred alternative approved in Phase |

a. Design Refinement
Update and revise the lighting and landscape design in collaboration with CMA

Engineers. Incorporate construction details and sections

b. Construction Cost Estimate
Update estimate to reflect the preferred alternative

c. Submit Preliminary Design
Submit Phase 2.0 Preliminary Design documents to CMA Engineers for distribution to

the City and NHDOT for review and approval.

2.38 Pretirninary 2ighi-of-Way Activities
For this project, it is not expected that any formal acquisitions or permanent easements will
be required, and minimal temporary easements since the work is intended to remain within
City rights-of-way and existing easements. An initial inventory of potential impacts will be
prepared and submitted to the City for review. Formal documentation will be prepared in
Final Design (see 3.04).

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