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Education

BS, Civil Engineering,
Northeastern University, 1990

AS, Civil Engineering Technology,
Wentworth Institute of Technology,
1987

Certification/License
Professional Engineer: MA, NH, VT

Areas of Expertise

+ Water distribution, drainage and
sewage collection system
design and rehabilitation

« Project management

Experience
* 33 total years

« 2years with Hazen

Professional Activities
Water Environment Federation

New England Water Environment
Association

New England Water Works
Association

Hazen

Alberto Angles Jr., PE

Senior Associate

Mr. Angles is a project manager with experience
in the planning, design, construction, and
evaluation of water and wastewater utility
systems. He is also well versed with all phases of
project development - from investigative studies
through the design, bid, and construction
phases - with a major focus on conveyance and
utility work.

Brookfield Street Water Main Replacement, Hartford Metropolitan
District Commission, CT

Senior Project Engineer for the design of the water transmission main re-
placement on Brookfield Street, replacing approximately 7,000 If of 36-
inch steel transmission main in congested urban areas of Hartford. The
project also included inland/wetland permitting, soil corrosivity testing,
and traffic control. Responsibilities included supervising the daily activ-
ities of the Team, coordination of team resources, oversight of design and
development of contract documents, QA/QC milestone reviews, and bud-
get and schedule management.

Oak Street Water Main Design, Hartford Metropolitan District
Commission, East Hartford and Glastonbury, CT

Lead Design Engineer for replacement of 16,000 If of 16-inch water main
in residential areas along the urban thoroughfare, Oak Street. The proj-
ect included inland/wetland permitting and the Connecticut Department
of Transportation permitting. Responsibilities included supervising the
daily activities of the Team, coordination of team resources, oversight of
design and development of contract documents, QA/QC milestone reviews,
and budget and schedule management.

Residential Water Main Replacement Design and Construction
Services, Needham Water and Sewer Division, MA

Senior Project Engineer for the design of 9,000 feet of 8-inch and 12-inch
water main replacements in residential neighborhoods. Responsibilities
included supervising the daily activities of the Team, coordination of team
resources, oversight of design and development of contract documents
for Public Bidding (under M.G.L. c. c 30, § 39M), QA/QC milestone reviews,
and budget and schedule management.

Alberto Angles Jr., PE

References

Brookfield Street Water Main
Role: Senior Project Engineer
Hartford MDC

Alvin Tan

Project Manager

555 Main Street

Hartford, CT 06142
860.278.7850
atan@themdc.com

Residential Water Main

Role: Senior Project Engineer
Needham Water and Sewer
Robert Lewis

Water and Sewer Superintendent
470 Dedham Ave.

Needham, MA 02492
781.455.7548
rlewis@town.needham.ma.us

Commercial Street/Fort Square
Role: Deputy Project Manager
Gloucester DPW

Ryan Marques

Project Manager

City Hall Annex

3 Pond Road

Gloucester, MA 01930
978.325.5335
rmarques@gloucester-ma.gov

Commercial Street/Fort Square Utilities Upgrade, City of
Gloucester, MA

Deputy Project Manager for the investigation, design, permitting, bidding
(under M.G.L. c. ¢ 30, § 39M), and construction services for the City’s Pub-
lic Infrastructure Replacement Project. The project includes approximate-
ly 3,200 If of 8” to 12” water mains, 2800 If of sanitary sewers, 1,100 If of
sewer force main, 1,500 If of storm drains, and a 150-gpm submersible
sanitary sewer pump station. The project is located in a heavily developed
urban area, which includes a mix of industrial marine facilities and resi-
dential properties. The drainage system was designed to incorporate pro-
prietary separators to capture and retain total suspended solids, floatables,
and total petroleum hydrocarbons. Existing bulkheads, seawalls, and rip-
rap were modified to accommodate the new work. Full depth reconstruc-
tion of roadways, sidewalks, and curbing were also included.

Worcester Road Pump Station Elimination, Town of Framingham, MA
Deputy Project Manager for the final design phase for the construction of
anew wastewater 5.6 mgd self-cleaning trench wet well pumping station,
6,200 feet of 30-inch interceptor sewer, and 1,900 feet of 8-inch and 14-
inch dual force mains. The project includes a compact pumping station
site, complex excavation, and significant groundwater dewatering. Odor
control was provided using activated carbon. Provisions for the addition
of Bioxide were also made to address concerns of hydrogen sulfide corro-
sion and odor issues. The project includes environmental permitting, SRF
funding assistance, and public outreach.

Mill Cove Relief Siphon Design and Construction, Massachusetts
Water Resources Authority, Weymouth, MA

Senior Engineer responsible for design of 2,000-feet of 42-inch HDPE
sewer siphon across Mill Cove; incorporated horizontal directional drill-
ing to circumvent a lengthy permitting process and reduce cost and con-
struction time for the Massachusetts Water Resources Authority (MWRA).

Washington Street Drain and Outfall Design and Inspection
Program, City of Gloucester, MA

Project Manager providing engineering services during construction of
the Washington Street Drain Project, which is the first component of the
City’s long-term control plan for CSOs. Providing services for approximate-
ly 1,200 If of storm drain (12-inch to 60-inch) that discharges into the Out-
er Gloucester Harbor, approximately 500 feet offshore of Pavilion Beach.

Deer Island Treatment Plant As-Needed Technical Assistance,
MWRA, Winthrop, MA

Project Manager for task orders, including the design, bidding (under
M.G.L. c. c 30, § 39M) and engineering services during construction for
Parking Lot Modifications at the Deer Island plant and the Tafts Avenue
and Shirley Street Intersection Improvements.

Hazen and Sawyer

August 2021 EXHIBIT A

City of Nashua, NH
Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System
Investigation and Evaluation Program — Phase II
Scope of Work for Engineering Services

Background

The CMOM program was developed by the US Environmental Protection Agency (USEPA) as a flexible, dynamic
framework for municipalities to minimize the risk of SSOs by identifying and implementing widely accepted
wastewater industry practices to:

e Better manage, operate and maintain sewer collection system
e Investigate capacity constrained areas of the collection system

e Respond to SSO events to minimize impacts to human health and safety, and the environment

Since there is no Federal requirement, many states have been adding CMOM or CMOM-type requirements into
wastewater NPDES Permits, including New Hampshire. The EPA Region 1 and the State of New Hampshire
Department of Environmental Services (DES) requires the development of a “Collection System O&M Plan” as
part of its wastewater NPDES Permits that covers the pipes, manholes, and pump stations in the separate and
combined sewer systems.

During Year 1 and 2 of this program, the City of Nashua worked with Hazen and Sawyer (Consultant) to develop
the CMOM Program in a capacity to satisfy the conditions of the NPDES draft permit. Hazen delivered the
following items under the Year 1 and 2 contract:

e CMOM O&M Manual
Several Standard Operating Procedures
Prioritization of assets for inspection
Review and Rehabilitation recommendations for approximately 130,000 LF of Sanitary Sewer pipe,
43,000 LF of Storm Sewer Pipe, 2,500 LF of culverts, and all manholes associated with each
Expansion of the City’s Hydraulic Model
Stormwater BMP inspections
Rehabilitation recommendations for all eight siphons
Updates to the City’s GIS database

This document shall be used to continue with the development and implementation of the CMOM program for
the City of Nashua to guide employees on the proper preventative maintenance of their sewer collection and
drainage system. The CMOM Program is to help the City be proactive versus reactive to operation and
maintenance of its sewer systems, and thus mitigate costly repairs and potential violations to the Clean Water
Act. The CMOM program shall also serve as a tool for the City for budgeting future Capital Improvement
Projects. In addition, the City desires to develop a preventative maintenance plan for the drainage system.
While the drainage system is independent of the sewer collection system, both systems would benefit from an
operation and maintenance program. The Engineering scope of services provided shall be for a two-year period
for implementation of Nashua’s CMOM Program and continuation of the City’s Stormwater collection system
investigations and evaluations. Since this project is funded through an NHDES CWSRF loan, final approval of
work deliverables is required and will be submitted accordingly.

City of Nashua, NH
Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System
Investigation and Evaluation Program - Phase II
Scope of Work for Engineering Services

A. Project Administration, Meetings, and Quality Assurance/Quality Control (Tasks A1-A3)

TASK Al Project Management

This subtask includes time required for general project coordination and management, maintenance of project
records and documentation, control of budget and schedule, including preparation and submission of work
schedules, invoices and monthly progress reports. Monthly progress reports shall outline budget, project and
schedule status through all phases of the project.

Deliverables: | One copy of each monthly invoice and progress report.

TASK A2 Quality Assurance / Quality Control (QA/QC)

The on-going QA/QC plan shall be updated to address new milestones, and personnel assigned to the project.
These QA/QC procedures shall be employed in order to maintain deliverable quality during all phases of the
project. These procedures shall address the use of quality control reviews, engineering and calculations
checking, and other measures necessary to maintain a consistent, complete, high quality and compatible
product. A QA/QC review shall be conducted on submittals prior to delivery to the City. Members of in-house
staff not associated with delivery of the project shall be selected to perform these reviews. It is assumed that
QA/QC reviews conducted under this Task will include the following deliverables: Collection System O&M Plan
Update, CMOM Quarterly Updates, Phase II Rehabilitation Recommendation Technical Memorandum (TM),
Force Main Condition Assessment TM, Miscellaneous Below Grade Wastewater Structures TM, Flow Monitoring
Evaluation TM, Headwall Inspection TM.

TASK A3 Meetings
Consultant shall prepare for and attend progress meetings when requested by City staff to review project status,

and to address the technical aspects of the work and results of the field investigations, analyses, and other
efforts associated with the project. The Project Manager and the appropriate technical staff shall attend these
meetings, as needed for the specific agenda. Appropriate NHDES staff will be invited to attend the kick-off, mid-
project and wrap up meetings. Consultant shall issue an agenda prior to each meeting and shall also prepare the
minutes detailing the topics and discussions of each meeting. It is assumed that meetings conducted under this
Task will include the following: Twelve (12) bi-monthly meetings, one hundred and 4 (104) weekly meetings, one
(1) kickoff meeting.

Deliverables: Attendance and preparation of agendas for each progress meeting. Preparation and
distribution of one copy of the recorded meeting minutes to all participants after each meeting.

B. CMOM (Tasks B1-B8)

Consultant shall perform engineering services for the continuation of the CMOM Program that complies with
the requirements of the EPA and NHDES criteria and implements the capacity, management, operation
management and maintenance of the City’s sewer collection system. The scope includes the following tasks:

Task B1 Collection System Operation and Maintenance (O&M) Plan Update
Task B2 CMOM Quarterly Updates
Task B3 Sanitary Sewer CCTV and Manhole Inspections and Evaluation
Task B4 Sanitary Sewer GIS Edits and Updates
Task B5 Force Main Condition Assessment

2

AUGUST 2021

City of Nashua, NH
Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System
Investigation and Evaluation Program - Phase II
Scope of Work for Engineering Services

Task B6 Inspection of Miscellaneous Below Grade Wastewater Structures
Task B7 PACP Training
Task B8 Sewer System Flow Monitoring

TASK B1 — Collection System Operation and Maintenance (O&M) Plan Update
The Consultant shall assist the City with annual updates to the Collection System O&M Plan. This document,
developed in 2020, is a “living” document to be used by City employees and should be updated annually or
whenever significant changes occur. This task shall also include the creation and/or update of up to ten (10)
standard operating procedures (SOPs). Components of the O&M Plan to be updated annually include:
e Collection System Management
o Organizational Structure
Training
Internal Communication
Customer Service
Management Information Systems
Unauthorized Discharge Notification Systems
o Legal Authority;
e Collection System Operation
o Budgeting
Monitoring
Hydrogen Sulfide Monitoring and Control
Safety
Emergency Preparedness and Response
Modeling
Mapping
New Construction
o Pump Stations;
e Equipment and Collection System Maintenance
o Maintenance Budgeting
o Planned and Unplanned Maintenance
o Sewer Cleaning
© Parts and Equipment Inventory
o Easements — Location and Maintenance;
e Sewer System Capacity Evaluation — Testing and Inspection
o Flow Monitoring
o Sewer System Testing
o Sewer System Inspection; and
e Sewer System Rehabilitation

Oo 000 0

00000 0 0

Deliverables: | Electronic (PDF and editable word) versions of Draft and Final O&M Plan Update
(including SOPs), and five (5) hard copies of Final O&M Plan Update for the City and distribution to EPA
and NHDES. Hard copies shall be distributed in a 3-ring binder for ease of document replacement for
annual updates.

AUGUST 2021

City of Nashua, NH
Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System
Investigation and Evaluation Program - Phase II
Scope of Work for Engineering Services

TASK B2 — CMOM Quarterly Updates

The Consultant shall assist the City in preparation of the CMOM Quarterly Updates. These updates are quarterly
submittals to the NHDES and EPA. The CMOM Quarterly Updates shall document actions pertaining to the
operation and maintenance of the City’s Collection System during each quarter. The Consultant shall prepare
eight (8) quarterly updates, due on January 15, April 15, July 15, and October 15 as the schedule requires. By
the first day of the month in which a quarterly report is due, the Consultant shall prepare and submit a bulleted
list of CMOM Program milestones completed during each quarter to the City. The City shall submit the quarterly
update to USEPA and NHDES.

Deliverables: — Electronic versions of Quarterly Updates for City distribution to the EPA and NHDES.
Deadlines for Submittals are January 15, April 15, July 15, and October 15 of each calendar year of this
contract.

Task B3 — Sanitary Sewer CCTV_and Manhole Inspections and Evaluation

The Consultant, through its subcontractor, shall conduct the assessment of pipes and manholes identified
through the City’s Continuous Sewer Assessment Plan (CSAP) developed in previous years of the CMOM
Program. It is assumed for the purposes of this scope that up to 100,000 linear feet of pipe shall be reviewed in
each of the two years. This includes 20,000 linear feet of pipe per year inspected by City forces and the
remaining 80,000 If to be inspected by the Consultant’s subcontractor. Consultant shall use Microsoft’s Power BI
and ESRI’s GIS to track progress. The City shall have access to review progress with these tools. Any additional
effort required beyond the amount budgeted shall require additional budget to be negotiated between the City
and the Consultant.

B3.1 CCTV, and Manhole Inspections

The subcontractor shall perform CCTV inspection and cleaning of approximately 80,000 If of the sewer
collection system in the first year and 80,000 If of sewer in the second year for a total of 160,000 If. It is
assumed approximately 600 manholes shall be inspected for each year for a total of 1,200 manholes.
CCTV inspection shall be completed in accordance with the PACP Standards V7.0. The Contractor shall
use personnel for CCTV inspection who are trained and certified (in current standing) in the use of
NASSCO’s PACP framework.

The Subcontractor shall perform manhole inspections of all sewer manholes accessed during the CCTV
inspections. Manhole inspections shall include obtaining a global positioning system (GPS) of each
manhole and shall be performed according to the NASSCO MACP V7.0 Level 1 inspection criteria, with
several additional criteria as selected by Hazen.

B3.2 Assist with Sewer, and Manhole Inspections

Consultant shall provide as-needed coordination with the CCTV subcontractor including the
development of maps for the crews and the QA/QC of the CCTV coding. Consultant shall prepare and
provide maps (digital or hardcopy) for the sewer pipes and manholes to be inspected in the first year
and second year to the subcontractor for inspections. Consultant shall attend periodic meetings with
the City to review areas inspected and areas to be inspected and hold weekly calls between all
stakeholders during work.

AUGUST 2021

City of Nashua, NH
Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System
Investigation and Evaluation Program - Phase II
Scope of Work for Engineering Services

B3.3. Identify Sewers and Manholes for Rehabilitation/Replacement

Consultant shall conduct a detailed evaluation of the inspection data for the sewer and manhole
inspections. Consultant shall then utilize its in-house tools to develop rehabilitation or replacement
recommendations. The videos shall be reviewed once received by the Consultant. Recommendations
shall include a set of maps (digital or hardcopy) outlining the rehabilitation recommendations including
rehabilitation method or replacement. In addition, the Consultant shall provide a master document
summarizing the CCTV data and Consultant’s recommendations.

Deliverables: | CCTVand manhole Inspection Reports from Subcontractor. Interim recommendation
spreadsheets shall be submitted to the City upon request, all data is available in real time via GIS and
through ProjectWise. The spreadsheets shall show progress to date of reviews. Three (3) hard copies
and one (1) pdf file shall be submitted per month from receipt of first Subcontractor transmittal.
Consultant shall deliver final updated prioritized spreadsheet and map.

Rehabilitation recommendation technical memoranda shall be prepared and delivered to the City at the
conclusion of each year. The Consultant shall prepare one (1) pdf file and five (5) hardcopies of each
years’ report.

TASK B4 — Sanitary Sewer GIS Edits and Updates

Consultant shall provide support for improving and updating the City’s GIS database. The updates (including the
addition of sewer service connections to properties and catch basin laterals in the areas where sewer CCTV is
performed) shall be based on the sewer system inspections and City records which may yield variances from
existing data in the GIS database. The Consultant shall work with the City’s GIS coordinator to coordinate
updates. The work shall include periodic submittals to the City’s GIS coordinator outlining recommended
modifications to the GIS. The Consultant shall document the GIS database changes in Excel tables. Any
additional effort required beyond the amount budgeted shall require additional budget to be negotiated
between the City and the Consultant.

Deliverables: Updates to the City’s GIS.

TASK B5 — Force Main Condition Assessment
A force main condition assessment shall be performed to evaluate the force main materials and bedding
conditions. The consultant shall identify conditions of the pipe and general recommendations.

B5.1 ‘Inspection and Testing
The Consultant shall engage a Subcontractor to perform a Condition Assessment including non-
destructive testing of a force main to be determined. For the purpose of budgeting the force main is
assumed to be 10-in dia., ductile iron, approximately 800 feet long with an accessible air release valve
(ARV). A Condition Assessment shall be conducted to evaluate the pipeline materials and bedding
conditions. Such assessment shall include performing non-destructive test of pipe including ultrasonic
thickness (UT) wall thickness measurements and pit depth gauge measurements on the exterior of the
pipe. Access to the force main shall be through confined space entry into the ARV chamber and up to
two (2) test pits. Visual examination to assess the condition of the pipe and existing coatings or
encasement shall be made. One (1) soil sample shall be obtained at each test pit for corrosivity testing

AUGUST 2021

City of Nashua, NH

Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System

B5.2

Investigation and Evaluation Program - Phase II
Scope of Work for Engineering Services

and analyses (2 soil sample for laboratory corrosivity analysis total). Pipe to soil potential stray current
identification measurements shall be performed.

Force Main Condition Assessment Technical Memorandum

Based on the abovementioned inspection and testing the Consultant shall prepare and submit a Force
Main Condition Assessment Technical Memorandum (TM). The TM shall contain the Reports from
Subcontractor and detail inspection field findings, soils data on corrosivity scoring, and include
annotated digital photographs and a table that presents all UT data by location on the force main. The
TM shall contain conclusions as to the conditions of the pipe and general recommendations.

Electronic versions (PDF and Word format) of the Draft TM shall be submitted to the City for review and
comment. Following the City’s review of the Draft TM, Consultant shall incorporate the City’s comments,
and submit a Final TM.

Deliverables: | Inspection Reports from Subcontractor. Electronic (PDF and editable word) versions of
Draft and Final TM, and five (5) hard copies of Final TM.

TASK B6 — Inspection of Miscellaneous Below Grade Wastewater Structures

Inspection of miscellaneous below grade wastewater structures shall be performed to document their existing
conditions. The Consultant shall identify existing conditions of the structures and provide general
recommendations.

B6.1

B6.2

Inspections

The Consultant shall engage the services of a subcontractor to conduct Inspections of miscellaneous
below grade wastewater structures to document their existing conditions. These structures include
eight (8) Siphon Inlet Chambers, eight (8) Siphon Outlet Chambers and the lower level of one (1) Pump
Station (CSO 5 Levee Pump Station). Confined space entry procedures and preparatory cleaning of
structures shall be implemented as needed to conduct inspections. Tasks shall include video inspection
and photographs of the below structures including walls, floor, ceiling, channels, wet wells, and pipe
connections. Measurements shall be taken of all pipe penetrations off the floor. Photographs of all
gates, valves and other mechanical components shall be taken.

Technical Memorandum

Based on the abovementioned inspection and testing the Consultant shall prepare and submit a
Technical Memorandum (TM). The TM shall inspection findings and include annotated digital
photographs and general recommendations on the condition of the structures.

Electronic versions (PDF and Word format) of the Draft TM shall be submitted to the City for review and
comment. Following the City’s review of the Draft TM, Consultant shall incorporate the City’s comments,

and submit a Final TM.

Deliverables: Inspection Reports and videos from Subcontractor. Electronic (PDF and editable word)
versions of Draft and Final TM, and five (5) hard copies of Final TM.

AUGUST 2021

City of Nashua, NH
Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System
Investigation and Evaluation Program - Phase II
Scope of Work for Engineering Services

TASK B7 — PACP Training

Consultant shall provide Pipeline Assessment Certification Program (PACP) training. PACP is the North American
Standard for pipeline defect identification and assessment, providing standardization and consistency to the
methods in which pipeline conditions are identified, evaluated and managed. The goal is to have pipeline system
owners create a comprehensive database to properly identify, plan, prioritize, manage and renovate their
pipelines based on condition evaluation. The Consultant shall conduct up to two (2) 3-day training sessions for
NASSCO’s Pipeline Assessment, Manhole Assessment and Lateral Assessment and Certification Program. Classes
shall be held virtually and the maximum class size is 10 people per class. The required text, Pipeline Assessment
& Certification Manual, shall be provided for each participant.

Deliverables: Conduct two (2) 3-day virtual training sessions for NASSCO’s Pipeline Assessment,
Manhole Assessment and Lateral Assessment and Certification Program (including manuals).

Task B8 — Sewer System Flow Monitoring

Flow monitoring shall be performed to identify bottlenecks within the Sanitary Sewer Collection System under
various storm events and dry weather. The Consultant shall provide recommendations for upgrades to the
collection systems based on the results of this Task.

B8.1 Review Existing Information
Consultant shall review existing information provided by the City, including:
e Record drawings and sewer mapping
e Geographic Information Systems (GIS) data
e Closed-Circuit Television (CCTV) data
e Records from staff regarding field observations (e.g., SSO history, etc.)
e Pump station flow and operational data

B8.2 Collect Flow/Rainfall Monitoring Data
Consultant shall conduct a temporary flow and rainfall monitoring program to establish a recent,
continuous and simultaneous data set of velocities, depths and flows in the sewer system. This
monitoring program shall utilize area-velocity metering equipment that allows measurement of flows
and levels both below and above the pipe crown, to capture the range of potential sewer system
responses to rainfall, including surcharged conditions. Data shall be reported in five-minute intervals.
The data collected shall be used in the calibration/validation of the hydrologic/hydraulic model.

The flow and rainfall monitoring program shall be conducted for a period of eight (8) weeks.

A total of six (6) temporary flow meters are included in this task. Rainfall data shall be obtained from the
rain gauge at the wastewater treatment facility. Consultant shall select the monitoring locations,
administer the subcontract to the flow monitoring subcontractor, assist the subcontractor in selection of
alternate metering sites as needed due to adverse field conditions, and conduct QA/QC for the data
collected.

AUGUST 2021

City of Nashua, NH

Capacity, Management, Operation and Maintenance (CMOM) and Stormwater Collection System

B8.3

B8.4

B8.5

Investigation and Evaluation Program - Phase II
Scope of Work for Engineering Services

Model Calibration/Verification

Consultant shall utilize the flow and rainfall monitoring data collected to perform dry and wet weather
calibration and verification of the hydraulic model. The monitoring data collected shall be used to
initially calibrate/verify the model. Representative storm events of varying intensities and depths shall
be selected from the rainfall data set to be used for calibration and verification. Three (3) storms shall
be used for calibration and one (1) for verification of the model.

The model shall be calibrated by adjusting hydrologic and hydraulic parameters until reasonable
agreement is reached between observed and predicted flows, volumes and depths. Model calibration
accuracy and quality shall be judged by industry-standard guidelines.

Model Simulations

Consultant shall use the calibrated and verified model to simulate design storm events, and evaluate the
sewer system response to wet weather, including the 1-year, 2-year, and 5-year storm events. Baseline
(current conditions) scenario shall be evaluated. The ability of the sewer system to convey baseline
flows during both dry and wet weather shall be evaluated. Locations of predicted surcharging and
hydraulic deficiencies shall be identified. Tables and figures depicting the performance of the collection
system for each storm event shall be developed. Tables shall show the length of sewers surcharged by
size ranges, and figures shall illustrate sewers that are partially and fully surcharged, including type of
surcharge (i.e., backwater-induced or capacity-related).

Flow Monitoring Evaluation Technical Memorandum

Consultant shall develop and submit a Flow Monitoring Evaluation Technical Memorandum (TM),
incorporating the results of Tasks B8.1 through B8.4. The TM also include a table of contents, sketches,
technical narratives, methodologies, results, and all pertinent information used to develop and calibrate
the model, and conduct model simulations.

Electronic versions (PDF and Word format) of the Draft TM shall be submitted to the City for review and
comment. Following the City’s review of the Draft TM, Consultant shall incorporate the City’s comments,
and submit a Final TM.

Deliverables: Flow meter data and updated model. Flectronic (PDF and editable word) versions of
Draft and Final TM, and five (5) hard copies of Final TM.

C. Stormwater Collection System Investigation and Evaluation (Tasks C1-C4)
Consultant shall perform engineering services for the continuation of the City’s Stormwater Collection System
Investigations. The scope includes the following tasks:

Task C1
Task C2
Task C3
Task C4

Stormwater CCTV and Manhole Inspections
Stormwater GIS Edits and Updates
Headwall Inspections

Green Infrastructure Inventory

AUGUST 2021