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EXHIBIT A

SCOPE OF WORK
C80 LONG TERM CONTROL PLAN UDPATE / INTEGRATED PLAN

GENERAL

The City of Nashua, NH developed and submitted a 1997 Long-Term CSO Control Plan and a
2003 Long-Term Water Quality and Infrastructure Control Plan to EPA and NHDES. Since
then, studies have been conducted to investigate more cost-effective measures to control CSOs
such as the Re-evaluation Study of CSO Control for CSO 005 and CSO 006 (March 2009).
These studies have resulted in modifications to some of the originally recommended elemenis
and associated implementation schedules that are in the current CSO Consent Decree Program.

The City has implemented all mandated CSO controls and has also developed and submitted a
CSO Post-Construction Monitoring Plan to EPA and NHDES. The EPA has since requested a
scope of work be developed for updating the Long-Term Control Plan in accordance with Clean
Water Act requirements,

The City is subject to the 2017 New Hampshire Small MS4 General Permit and has an ongoing
CMOM program for both the sewer and storm drainage systerns. Through the integrated
planning approach as described in EPA’s “Integrated Municipal Stormwater and Wastewater
Planning Approach Framework,” a municipality, such as Nashua, can prioritize and schedule
wastewater and stormwater projects based on the municipality’s financial capability. This scope
of work is intended to comply with the EPA’s CSO Policy requirement for LTCP development,
and development of an Integrated Plan consistent with EPA guidance and CWA requirements.

SCOPE OF SERVICES

Task 1 — Project Management, QA/QC, Meetings

Project Management

Prepare a schedule including target submittal dates, anticipated review dates, and key meeting
dates. Prepare monthly progress reports presenting work activities completed during the reporting
period, budget status, schedule status, and identification of any out of scope items. Prepare
monthly invoices detailing project labor costs and other direct costs.

Quality Assurance / Quality Control (QA/OC)

QA/OC procedures shall be employed in order to maintain document quality. These procedures
will address the use of quality control reviews, engineering and calculations checking, and other
measures necessary to maintain a consistent, complete, high quality and compatible Integrated
Plan.

A QA/OQC review will be conducted on every submittal prior to delivery to the City. These

reviews apply to all memoranda and reports generated for this project. Members of in-house
staff not associated with the project will be selected to perform these reviews.

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CSO Long-Term Control Plan Update/Integrated Plan

Meetings

Consultant will meet with the City as needed throughout the project (6 per year, inclusive of

EPA quarterly mectings) to review project progress and obtain direction on technical work.

Consultant will develop and provide, for each meeting, agenda, schedule, presentation materials
s needed) and minutes.

in addition to regular monthly meetings, Consultant will prepare for and attend quarterly

meetings with EPA/NHDES. Consultant will develop and provide, for each meeting, agenda,

schedule, presentation materials (as needed) and minutes.

AJl project deliverables will be provided to the City in both hard copy and electronic format (as
the City requires}, and in both PDF and editable file format (e.g., word, CAD, ete.).

Deliverables:

Two (2) copies of each monthly progress report.
« Two (2) copies of each monthly invoice.

e Meeting agendas and minutes.

&

Task 2 ~ Existing Information/Data Review

Consultant will collect and obtain prior CSO and stormwater planning documents as weil as other
data from the City, including:

® 1997 Long-Term CSO Control Plan

@ 2003 Long-Term Water Quality and Infrastructure Contro! Plan

6 2609 Re-evaluation Study of CSO Control for CSO 005 and 606

@ CSO Annual Reports submitted to EPA/NHDES

® Minutes and related documents for pertinent agency/City meetings on CSO Consent
Decree program completion and acceptance

@ The previous stormwater management plan and annual reports from 2004-2019

e Capital Improvement Plan processes, documents, reports, as available

Consultant will also obtain recent information from the City regarding operation of the collection
system that relates or impacts the combined sewer system performance. Review of the reports and
data collected will be performed to inform the background and existing conditions characterization
of the collection system, for the LTCP update,

Task 3 - Characterization of Uxisting Conditions

Existing receiving water and end-of-pipe water quality data will be collected (provided by City)
and reviewed, Consultant will request, based upon the review of this data, additional water quality
data collection (if required) for the purpose of characterizing existing conditions.

Temporary flow monitoring will be performed to characterize the response of the sewer system to
rainfall, and to re-calibrate the City’s InfoWorks voller tion system model. Existing conditions
model simulations will be performed to evaluate the current annual average (typical year)
performance of the system (e.2., CSO volumes, frequencies, percent capture),

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CSO Long-Term Control Plan Update/Integrated Plan

The existing collection system model will be updated using recent sewer data to be provided by
the City, including but not limited to as-built drawings, GIS data, and staff observations. This may
include refining tributary area delineations, updating invert or rim elevations, and/or updating
connectivity/configuration of the sewer system. The model’s parameters will be updated ifneeded
based on calibration/validation with temporary flow data collected in this task. Rainfall data will
be collected via permanent City gauges (3 total} and used in the calibration process.

Task 4 ~ Alternatives Analysis

Consultant wil identify and evaluate a range of CSO reduction alternatives, including systern
optimization, storage, treatment, sewer separation, and source controls, A range of CSO
alternatives will be evaluated between 0% and 100% CSO reductions (on an annual average basis)
using the sewer model. Knee of the curve evaluations (including costs) will be performed for the
alternatives.

Task 35 — Integrated Plan Framework

Consultant will perform Integrated Planning in accordance with the Water Infrastructure
Improvement Act which codified the 2012 EPA framework for integrated planning into the Clean
Water Act.

The overall purpose of the [P will be fo assist Nashua in prioritizing and programming capital
improvements based on criteria most important to the municipality and the community. The IP
approach will result in a proposed capital schedule for a specified future planning horizon that
seeks to maximize benefits as early as possible based on the ertteria, while also meeting all
requirements within the respective regulatory spectrum, including the Clean Water Act. The IP
will also result in integration and prioritization of capital projects for all applicable infrastructure
elements (wastewater and stormwater, and drinking water), thus eliminating a siloed approach to
capital project implementation.

Consultant will schedule workshops with City personnel to 1) facilitate the selection of preliminary
ranking criteria to be used for the triple bottom-line analysis, 2) develop guidelines and rules to be
used for inclusion and scoring of projects, 3) perform a preliminary importance ranking of selected
criteria, and 3) determine the preliminary ist of projects and planning horizon timeframe frorn
which to base the integrated plan on.

Consultant will prepare a broad list of ranking criteria organized by environmental, social, and
economic categories as a first step. This list will serve as a reference only in the development of
the City’s criteria. An initial workshop will focus on environmental criteria and benefits to the
City, and then follow the same procedures for social and economic criteria. The result of the
workshop will be a working list of criteria to be used for the eventual scoring of capital projects.
This workshop will also include the preliminary discussion and development of project scoring
methods to be employed as the basis of the LTCP/IP. Consultant will describe the different
methods used and describe the preferred method (score-based quantification) in more detail.

An additional workshop will be conducted to determine the list of preliminary capital improvement
projects to be included in the integrated plan. Our understanding is that the list will include
wastewater, stormwater, and drinking water projects. The initial list will include those projects

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CSO Long-Term Control Plan Update/Integrated Plan

already identified by the City in its existing CIP, including, but not limited to, projects already in
design and construction. In addition to this base list of projects, the team will discuss and identify
other prospective projects that had previously not been considered because of funding constraints
or more pressing regulatory compliance schedules. In cases where discreet projects cannot be
identified, the team will identify recurring programs with funding allocations (such as annual
wastewater improvements) and those will be included as projects in the preliminary list. The intent
will be to identify a portfolio of projects that will benefit the City and satisfy regulatory
requirements.

Deliverables:

+ Preliminary list of integrated plan ranking criteria, organized by environmental, social, and
economic categories

® Preliminary project scoring methodology and project inclusion guidelines

@ Preliminary list of capital projects and/or recurring programs to be included in the planning
horizon

‘Task 6 — Financial Capability Analysis

Consultant will conduct an FCA for the purpose of providing the City with a “snapshot
picture” of its financial strength and the residential affordability relative to its current and
future CWA expenditure obligations. The USEPA issued guidelines for performing
PCAs in 1997 which established a two-step process to assess:

° Residential Ratepayer Affordability; and
* Municipal Financial Strength

Residential affordability is determined by the ratio of the cost per household of the CIP
compared to Median Household Income. EPA’s standard metric for measuring a “high
economic impact” is 2 percent of MHI. Municipal financial strength is based on a six
metrics that consider the municipality's level of indebtedness, socioeconomic conditions,
and taxing capacity. Any additional guidelines specific to the state of New Hampshire
will be considered in these assessments. The results from the two assessments are then
combined to yield a numerical score that indicates the level of financial burden on the
municipality and its ratepayers attributable to current and planned future expenditures.

The FCA output is a high level and static depiction of the municipality’s financial
capacity to implement its CIP under its currently planned schedule. EPA has
acknowledged the deficiencies of the metrics established by the 1997 guidelines and
issued a revised set of guidelines in 2014. The 2014 guidelines allow permittees to
provide supplemental socioeconomic data that could better characterized the local
conditions of the permittee. Examples of socioeconomic data that could be provided
include but are not limited to:

Quintile Household Income Data

Poverty Levels

Fixed income population

Demographic Trends

Housing characteristics (renter versus home ownership)
Cost of Living

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August 2010 Page 4 of 7

owned entities, either party may terminate this
Agreement before any subsequent year if
Customer is unable to secure funding through
the legislative or governing body's approval
process.

3.5 Follow-on Term. If the parties enter into
another agreement substantially similar to this
Agreement for an additional term, the effective
date of the follow-on agreement will be the day
after the expiration date of this Agreement.

4.0—PropuctT UPDATES

4.1 Future Updates. Esri reserves the right to
update the list of Products in Table A—List of
Products by providing written notice to
Customer. Customer may continue to use all
Products that have been Deployed, but support
and upgrades for deleted items may not be
available. As new Products are incorporated into
the standard program, they will be offered to
Customer via written notice for incorporation into
the Products schedule at no additional charge.
Customer's use of new or updated Products
requires Customer to adhere to applicable
additional or revised terms and conditions in the
Master Agreement.

4.2 Product Life Cycle. During the Term of
Agreement, some Products may be retired or
may no longer be available to Deploy in the
identified quantities. Maintenance will be subject
to the individual Product Life Cycle Support
Status and Product Life Cycle Support Policy,
which can be found at
https://support.esri.com/en/other-
resources/product-life-cycle. Updates for
Products in the mature and retired phases may
not be available. Customer may continue to use
Products already Deployed, but Customer will
not be able to Deploy retired Products.

5.0—MAINTENANCE

The Fee includes standard maintenance benefits
during the Term of Agreement as specified in the
most current applicable Esri Maintenance and
Support Program document (found at

https ://www.esri.com/en-
us/legal/terms/maintenance). At Esri's sole
discretion, Esri may make patches, hot fixes, or
updates available for download. No Software other

than the defined Products will receive Maintenance.
Customer may acquire maintenance for other
Software outside this Agreement.

a. Tier 1 Support

1. Customer will provide Tier 1 Support
through the Tier 1 Help Desk to all
Customer's authorized users.

2. The Tier 1 Help Desk will be fully trained in
the Products.

3. Ata minimum, Tier 1 Support will include
those activities that assist the user in
resolving how-to and operational questions
as well as questions on installation and
troubleshooting procedures.

4. The Tier 1 Help Desk will be the initial point
of contact for all questions and reporting of a
Case. The Tier 1 Help Desk will obtain a full
description of each reported Case and the
system configuration from the user. This
may include obtaining any customizations,
code samples, or data involved in the Case.

5. Ifthe Tier 1 Help Desk cannot resolve the
Case, an authorized Tier 1 Help Desk
individual may contact Tier 2 Support. The
Tier 1 Help Desk will provide support in such
a way as to minimize repeat calls and make
solutions to problems available to
Customer's organization.

6. Tier 1 Help Desk individuals are the only
individuals authorized to contact Tier 2
Support. Customer may change the Tier 1
Help Desk individuals by written notice to
Esri.

b. Tier 2 Support

1. Tier 2 Support will log the calls received
from Tier 1 Help Desk.

2. Tier 2 Support will review all information
collected by and received from the Tier 1
Help Desk including preliminary documented
troubleshooting provided by the Tier 1 Help
Desk when Tier 2 Support is required.

3. Tier 2 Support may request that Tier 1 Help
Desk individuals provide verification of
information, additional information, or
answers to additional questions to

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August 31, 2021

CSO Long-Term Control Plan Update/Integrated Plan

» Required expenditures for other regulatory programs including SDWA
expenditures

These supplementary data should provide a much more detailed and accurate perspective
of the fmancia! impacts of EPA’s CWA mandates on the City’s municipality and its
ratepayers.

‘To perform the FCA, Consultant will collect socioeconomic data from the American
Community Survey (ACS) and other open source data from the Census Bureau and other
official state and Federal sources as needed. Consultant will also obtain detailed
financial data frorn the City including its latest CAFR, its bond ratings, and budget
information on the operation of its wastewater utility. Sources of debt by type and annual
payment obligations will also be obtained. These data will then be used to generate the
metrics that comprise the FCA scorecard. Consultant will use the supplemental data to
adjust the scorecard as applicable and provide a detailed evaluation on how the
supplemental data demonstrates the true economic impact of the CWA mandates.

Deliverabies:
e Draft and Final FCA

‘Task 7 —- Public Participation

City will conduct public workshops to inform the community of the LTCP Update/Integrated Plan
and encourage residents to participate in the process. Workshops will be conducted at key
milestones during the development of the LTCPVIP. While Consultant will not lead this task,
Consuitant will be available for questions/support for the City in their preparation/execuiion of
these meetings.

Task 8 — Permii/Regulatory Requirement Assessment

MS4 Permit needs, and any new NPDES requirements, will be addressed and evaluated such that
the implications of this work will be incorporated into the LTCP/IP,

Task 9 — Project Identification and Ranking

Consultant will coordinate a workshop with the City to rank the final criteria by applying
importance weights. This will be done using an iterative process with City staff. Staff will
individually rank the benefit categories and criteria in order of importance to them based on their
own judgement, then staff will perform a pair-wise comparison, which consists of comparing two
criteria at a time to each other for all pairing scenarios. This will be repeated and reviewed until
there is agreement on the relative importance of all criteria to each other.

The final project list to be included in the LTCP/IP analysis will be developed. This list will
incorporate any projects identified as a result of the above investigation and study-phase tasks, as
well as any other projects defined since development of the initial list. Other project constraints
wul be determined, such as “mission critica!” projects that must be done and are therefore not to
be subject to optimization scheduling. Project cost estimates and required life cycle durations will

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C30 Long-Term Control Plan Update/Integrated Plan

be inchided in the final list. In the event that estimated costs and durations are not defined,
Consultant will provide conceptual estimates and timelines.

With the final scoring methodology complete and all projects identified, designated City staff will
score each project to determine its raw score. Consultant will provide the City with options for
how to conduct scoring, Le, whether a City group leader should score themselves, or have a number
of staff conduct scoring and then calculate a representative score. Once raw scores are complete,
the final ranked (incorporating the criteria rankings) scores for each projects can be calculated.
This will represent the final list of ranked projects to be used for development of the
implementation schedule.

Deliverables:

® Final criteria rankings, including an Excel chart, the pair-wise comparison results, and
other associated documentation

# Final project list, including estimated costs and project life cycle duration, to be used for
the LTCP/IP scoring, optimization scheduling, and implementation

¢ Raw score and weighted scores for all projects

Task 10 ~ Scenario Development, Optimization Medel Runs, and Implementation Plan

Consultant will work with the City to develop different infrastructure implementation scenarios to
be used for the schedule optimization model and implementation plan. Possible scenarios include
I) the status quo — City’s current situation and current planned wastewater CIP based on current
regulatory compliance deadlines, 2) an unconstrained scenario with all projects (including water
treatment and water distribution projects} with no financial constraints including budgetary and
affordability constraints. The Consultant will work with the City to incorporate expenditure
scenarios into the City’s Rate Model to estimate impacts on sewer rates over the planning period.
Affordability of future rates will allow the City to demonstrate to EPA which compliance
schedules are the most affordable to the City while still meeting its regulatory obligations.
Additional scenarios relevant to the City may be discussed and evaluated.

Depending on the scenarios developed, capped annual capital outlays (i.e., funding limits) will be
incorporated into the schedule. For each scenario, Consultant will develop the schedule, a list of
projects and estimated costs to be completed within the planning period, and any projects which
are deferred to years beyond the planning period. Charts showing annual cost by project type over
time and spending limus, if applicable, will be produced as well. In addition, the benefits
distribution charts will be produced for each scenario.

Deliverables:

e® ‘Technical memorandum defining the scenarios to be used

e Optimization schedules, lists of projects to be implemented within the planning horizon,
list of deferred projects, annual costs over time charts, and benefits distribution charts for
each scenario

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CSO Long-Term Control Plan Update/Integrated Plan

Task 1i - Draft and Final Report

A Drafi Report (LTCP/IP Update} will be prepared, including all text, graphs, tables, analyses, and
encompassing the body of work contained in all tasks herein. Comments received on the draft
report will be incorporated into a final version.

August 2019 Page 7 of 7

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EXHIBIT B
TABLE OF CONTENTS
CITY OF NASHUA
GENERAL TERMS AND CONDITIONS

DEFINITIONS

PROFESSIONAL ENGINEER STATUS
STANDARD OF CARE

CITY OF NASHUA REPRESENTATIVE
CHANGES TO SCOPE OF WORK
CITY OF NASHUA COOPERATION

DISCOVERY OF CONFLICTS, ERRORS, OMISSIONS, AMBIGUITIES, OR
DISCREPANCIES

TERMINATION OF CONTRACT

DISPUTE RESOLUTION

NO DAMAGES FOR DELAY

INSURANCE

INDEMNIFICATION

FISCAL CONTINGENCY

COMPENSATION

COMPLIANCE WITH APPLICABLE LAWS
NONDISCRIMINATION

FEDERAL SUBCONTRACTING REQUIREMENTS
ENDORSEMENT

ASSIGNMENTS, TRANSFER, DELEGATION, OR SUBCONTRACTING
CITY INSPECTION OF CONTRACT MATERIALS
DISPOSITION OF CONTRACT MATERIALS

PUBLIC RECORDS LAW, COPYRIGHTS, AND PATENTS
FINAL ACCEPTANCE

TAXES

NON-WAIVER OF TERMS AND CONDITIONS

RIGHTS AND REMEDIES

PROHIBITED INTERESTS

THIRD PARTY INTERESTS AND LIABILITIES
SURVIVAL OF RIGHTS AND OBLIGATIONS
SEVERABILITY

MODIFICATION OF CONTRACT AND ENTIRE AGREEMENT

CHOICE OF LAW AND VENUE

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