R25-041 1 RESOLUTION NO. R25-041
2
3 A RESOLUTION OF THE CITY COMMISSION OF THE CITY OF
4 BOYNTON BEACH, FLORIDA, APPROVING TASK ORDER NO.
5 GESUT-3C-03-25 FOR CAROLLO ENGINEERS, INC. TO UPDATE
6 AND CALIBRATE THE CITY'S WASTEWATER AND POTABLE
7 WATER MODELS AND SERVICES, AND TO CONVERT THE CITY'S
8 WASTEWATER MODEL FROM INNOVYZE INFOSWMM TO
9 BENTLEY SEWERGEMS AND THE POTABLE WATER MODEL
10 FROM INNOVYZE INFOWATER TO BENTLY WATERGEMS, FOR
11 AN AMOUNT NOT TO EXCEED $400,000; AUTHORIZING THE
12 MAYOR EXECUTE THE TASK ORDER AND ANY FUTURE
13 DOCUMENTS ASSOCIATED WITH THE TASK ORDER THAT DO
14 NOT INCREASE THE CITY'S FINANCIAL OBLIGATIONS, SUBJECT
15 TO THE APPROVAL OF THE CITY ATTORNEY; AND FOR ALL
16 OTHER PURPOSES.
17
18 WHEREAS, the City of Boynton Beach Utilities Department requests the approval of
19 Task Order No. GESUT-3C-03-25 for Carollo Engineers, Inc. ("Vendor"), utilizing the General
20 Engineering Consulting Services Agreement with the City, to perform a comprehensive review
21 and update of the City's existing hydraulic models; and
22 WHEREAS, the City owns and operates a wastewater collection system and a potable
23 water distribution system, both of which have not been updated nor calibrated in nine (9)
24 years, which the City wishes to continue to use as tools to evaluate the performance of existing
25 infrastructure and plan for future development and/or flow conditions; and
26 WHEREAS, the City desires a better understanding of the impact of wet weather on its
27 master wastewater conveyance infrastructure to improve resiliency, including the update and
28 calibration of its hydraulic models; and
29 WHEREAS, the approval of Task Order No. GESUT-3C-03-25 will provide the necessary
30 data and insights to better manage and optimize the City's water systems, specifically in terms
31 of flow, pressure, and capacity; and
32 WHEREAS, the enhancement of the City's water system models will enable to
33 proactively address system vulnerabilities, identify bottlenecks, and prepare for future
34 demands as the City community grows; and
35 WHEREAS, by updating its hydraulic models, the City can identify and prevent service
36 disruptions or failures, provide essential data to guide future infrastructure projects, upgrades,
37 and expansions, to better allocate resources for maintenance and repair, to anticipate and
38 manage emergencies related to water and wastewater systems, to ensure compliance with
39 state and federal regulations governing water systems, to reduce unnecessary expenditures
40 on reactive repairs and inefficient system upgrades, and to benefit City residents by providing
41 more reliable water and wastewater services; and
42 WHEREAS, the total cost of Task Order No. GESUT-2C-04-25 is not to exceed
43 $400,000; and
44 WHEREAS, upon recommendation of staff, the City Commission finds it in the best
45 interest of the citizens and residents of the City to approve Task Order No. GESUT-3C-03-25,
46 and to authorize the Mayor to execute the Task Order and any amendments that do not
47 increase the City's financial obligations, subject to review by the office of the City Attorney for
48 legal sufficiency.
49
50 NOW, THEREFORE, BE IT RESOLVED BY THE CITY COMMISSION OF THE CITY OF
51 BOYNTON BEACH, FLORIDA, THAT:
52 SECTION 1. The foregoing "Whereas" clauses are hereby ratified and confirmed as
53 being true and correct and are hereby made a specific part of this Resolution upon adoption
54 hereof.
55 SECTION 2. The City Commission approves Task Order No. GESUT-3C-03-25,
56 attached as Exhibit A, and authorizes the Mayor to execute the Task Order and any
57 amendments that do not increase the City's financial obligations, subject to review by the
58 office of the City Attorney for legal sufficiency.
59 SECTION 3. This Resolution shall become effective as provided by law.
60 [SIGNATURES ON THE FOLLOWING PAGE]
61
-fh
62 PASSED AND ADOPTED this l day of February, 2025.
63 CITY OF BOYNTON BEACH, FLORIDA
64
65 YES NO
66 �.
67 Mayor— Ty Penserga
68 ,/-
69 Vice Mayor—Aimee Kelley
70
71 Commissioner— Angela Cruz
72
73 Commissioner—Woodrow L. Hay
74
75 Commissioner—Thomas Turkin
76
77 VOTE C
78
79 ATT :
80
81 000
82 • ��
83 Maylee De a, MPA, M ' Terga
84 City Clerk M. ,or
85
86 -A ON BFq‘h APPROVED AS TO FORM:
87 (Corporate Seal)/b0;Qp^R r7 •.cy`�
89 ' o� vr �o. ''I
: �Ce Jiim6
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90 ,'v'; ��co�(=2 . �f Shawna G. Lamb
91 ••..•, •.•• �O1 City Attorney
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Form of Task Order
CITY OF BOYNTON BEACH
General Engineering Consulting ry a Ta5k Order
Task Order No GSESUT-3C-03- 25
Consultant: Carollo Engineers
1. Task/Project. Task Order No. GESUT-3C-03-25 Wastewater and Potable Water Models
Update and Calibration
2. Detailed Scope of Professional Services.
A detailed scope of services under this Task Order, in accordance with the phases of service detailed
in the Agreement, is attached as Exhibit A
3. Deliverables and Schedule.
For study/design related services: Consultant shall deliver to the City the deliverables specified at
the time indicated on the attached Exhibit B.
For project administration services: Consultant shall provide project/construction administration
'I services in accordance with the Agreement and project schedule.
4. Compensation.
The total estimated construction costs of the Project or the cost of the study or report for this Task
Order may not exceed the amounts set forth in Section 287.055, Florida Statutes.
The total Fee to be paid to the Consultant under this Task Order shall not exceed $400,000.00, based
on the hourly rates currently in effect under the Agreement.
A detailed fee schedule is attached as Exhibit C.
The payment schedule (based on deliverables) is attached as Exhibit N/A.
5. Agreement Reference.
This Task Order shall be performed under the terms and conditions described within the General
9 Engineering Consulting Services Agreement, dated November 19, 2024, by and between the City of
Boynton Beach and Carollo Engineers, Inc. ("Consultant"), Contract No. CW24-001.
6. Insurance.
Consultant shall maintain insurance coverages in accordance with the Agreement and hereby
confirms that Certificate(s) of Insurance evidencing current policies meeting the requirements of
the Agreement are on file with the City as of the date of this Task Order.
4
7. Exhibits.
All attached Exhibits are incorporated fully into this Task Order and the Agreement.
RFQ CW24-001 General Engineering Consulting Services Task Order Form Exhibit A
8. Notice to Proceed (Task Order Form and Purchase Order).
® If checked, Consultant's receipt of a fully-executed copy of this Task Order and Purchase
Order(PO) shall serve as the Notice to Proceed under this Task Order, effective as of the
date the fully-executed Task Order was emailed to the Consultant.
❑ If checked, Consultant shall commence Services under this Task Order as specified in a
forthcoming Purchase Order (PO) and Notice to Proceed.
CONSULTANT: CITY OF BOYNTON BEACH
Elizabeth Digitally signed by Elizabeth
Fupkawa,PE
By: Fujikawa, PE -0St ?12S.O1.b189731 By: s =' – toTX"
Elizabeth Fujikawa ' 'e serga, Mayor
Print Name:
January 15th —
Date: , 2025 Date: h-f 2025
City Attorney's Office
Approv s to form ..'eg ity
By: die./n4 / /
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. SEAL
i .INCORPORATED: i
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\ ' ORIDP•
RFQ CW24-001 General Engineering Consulting Services Task Order Form Exhibit A
City of Boynton Beach
Risk Management Department
INSURANCE ADVISORY FORM
Under the terms and conditions of all contracts, leases, and agreements, the City requires appropriate coverages listing the
City of Boynton Beach as Additional Insured.This is done by providing a Certificate of Insurance listing the City as"Certificate
Holder"and'The City of Boynton Beach is Additional Insured as respect to coverages noted."Insurance companies providing
insurance coverages must have a current rating by A.M. Best Co. of"B+" or higher. (NOTE:An insurance contract or binder
may be accepted as proof of insurance if a Certificate is provided upon selection of vendor.) Thefollowing is a list of types of
insurance required of contractors, lessees, etc., and the limits required by the City: (NOTE: This list is not all inclusive,
and the City reserves the right to require additional types of insurance, or to raise orlowerthe stated limits,based
upon Identified risk.)
TYPE (Occurrence Based Only) MINIMUM LIMITS REQUIRED
General Liability General Aggregate $ 1,000,000.00
Commercial General Liability Products-Comp/Op Agg. $ 1,000,000.00
Owners & Contractor's Protective (OCP) Personal &Adv. Injury $ 1,000,000.00
Asbestos Abatement Each Occurrence $ 1,000,000.00
Lead Abatement Fire Damage (any one fire) $ 50,000.00
Broad Form Vendors Med. Expense (any one person) $ 5,000.00
Premises Operations
Underground Explosion&Collapse Products
Completed Operations Contractual
Independent Contractors Fire
Legal Liability
---------
Professional Liability Aggregate $ 1,000,000.00
Automobile Liability Combined Single Limit $1,000,000.00
Any Auto
All Owned Autos
Hired Autos
Non-Owned Autos
•
Excess Liability Each Occurrence to be determined
Umbrella Form Aggregate to be determined
•
Worker's Compensation Statutory Limits
Employer's Liability Each Accident $ 1,000,000.00
Disease, Policy Limit $ 1,000,000.00
Disease Each Employe( $ 1,000,000.00
•
Property:
Homeowners Revocable Permit $ 300,000.00
Builder's Risk Limits based on Project Cost
Installation Floater Limits based on Project Cost
Other-As Risk Identified to be determined
INSURANCE ADVISORY FORM
Insurance Advisory
2056 Vista Parkway,Suite 150
West Palm Beach,Florida 33411
P 561-868-6400
dr-Ca rol/a carollo.com
January 15, 2025
Keith Webber, PE
Boynton Beach Utilities
124 East Woolbright Road
Boynton Beach, FL 33435
Subject: Exhibit A: Proposal for Engineering Services
Task Order No. GESUT-3C-03-25 Wastewater and Potable Water Models Update and Calibration
Dear Mr.Webber:
As requested, we have prepared the following proposed scope of services for the subject project.
BACKGROUND
The City of Boynton Beach (City) owns and operates a wastewater collection system and a potable water
distribution system serving approximately 75,000 customers.The City has not updated or calibrated their
wastewater or potable water hydraulic models in 9 years and wants to continue using them as tools to evaluate
performance of existing infrastructure and plan for redevelopment/development and future flow conditions.The
City also wants to achieve a better understanding of the impact of wet weather on its master wastewater
conveyance infrastructure to improve resiliency.As a result,the City wants to update the hydraulic models with
the most current GIS database, and calibrate the models based on select field testing and SCADA information.
This Task Order(TO) provides engineering services for Carollo Engineers, Inc. (Carollo)to update and calibrate
the City's wastewater model and the City's potable water model. Services to convert the wastewater model from
Innovyze InfoSWMM to Bentley SewerGEMS and the potable water model from Innovyze InfoWater to Bentley
WaterGEMS are also included.
The scope of services proposed as part of this TO is as—follows:
TASK 1- PROJECT MANAGEMENT AND MEETINGS
Subtask 1.1—Project Management and Communication
Carollo's project manager(PM)will make staffing assignments, review work progress, coordinate quality
assurance and review procedures, and submit monthly progress reports along with monthly invoices.The PM will
manage the budget, schedule, and invoicing. Regular virtual coordination phone calls will be held with the City
PM and Carollo PM, monthly.
Project No I BBU Wastewater and Water Models Update and Calibration SOW FINAL docx
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 2
Subtask 1.2—Project Kickoff Meeting and Progress Meetings
Carollo will facilitate a working Kickoff Meeting (in person)to discuss project goals and expectations. One (1)
virtual progress meeting will be held to discuss field test needs and other data requirements for calibration.Two
(2) additional progress meetings (in person), one for each system, are included to review preliminary calibration
results for the potable water and the wastewater hydraulic models.
Subtask 1.3—Coordination with Other Ongoing Task Orders
Time will be included under this subtask to coordinate activities among this and other TOs currently under
development by Carollo, including the Boynton Beach Consent Order Assistance TO and the Boynton Beach
Asset Management TO.This coordination of activities will be done through periodic internal meetings of the
Carollo teams and will lead to streamlined management of information and quality of data and time/schedule
savings.
Task 1 Deliverables:
• Monthly progress reports and invoices.
• Meeting agendas, presentations, and minutes in electronic format(PDF).
TASK 2 - DATA COLLECTION AND ANALYSIS
Subtask 2.1—Collection System Data Collection: SCADA and Wet Weather Records
Carollo will begin the project by requesting updated information, including:
• Latest GIS sewer database (.gdb or.shp format)
• Daily average influent flow totals into the South Central Regional Wastewater Treatment Plant
(SCRWWTP) measured upstream of headworks, Boynton side only, for the last five (5)years. (.xlsx
spreadsheet format).
• Hourly influent to the SCRWWTP for the period when field testing will be performed. (.xlsx spreadsheet
format).
• Hourly influent to the SCRWWTP for the five highest flow days within the last 5 years. (.xlsx spreadsheet
format).
• Hourly influent to the SCRWWTP for the five lowest flow days within the last 5 years. (.xlsx spreadsheet
format).
• Additional hourly data may be requested after the analysis of the historical data is completed.
• Lift station SCADA for the last year, including:
o Pump runtimes (daily frequency for tandem lift stations, hourly for master lift stations, as
available). (.xlsx spreadsheet format).
o Pump status or pumps starts summaries (daily frequency for tandem lift stations, hourly for
master lift stations, as available). (.xlsx spreadsheet format).
• Confirmed pump control levels (floats depth from wet well rim for tandem/submersible lift stations, and
on/off/alarms elevations for master lift stations) (summarized in .xlsx spreadsheet format).
• Record drawings of any lift station configuration change that has occurred over the last 9 years. (.pdf
format)
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 3
• Record drawings of force main configuration changes that have occurred over the last 9 years, if not
reflected in GIS. (.pdf format)
• Excel (.xlsx format)files with:
o Updated pump curves information by lift station
o Pump design parameters such as horsepower, rated flow and head, impeller diameter, number
of pumps if updated, and connection size as available.
o Annotations as to how the operator envisions the pump station would operate better, i.e. lead
pump operating longer than jockey pumps.
o Dated history of wet well overflows or instances where emergency operations were necessary to
avoid overflows.
Carollo will provide an Excel template for City to enter this information if such is not already in a working
spreadsheet maintained by the City's Operations team.
• Any change in operating strategies as redevelopment has occurred (written/email format or.pdf
diagrams)
These data will be used to update the wastewater model as described in Task 3, and to calibrate it as described in
Task 4.
Subtask 2.2—Collection System Field Testing
The objective of this subtask is to obtain an accurate dry weather flow(DWF) calibration data set and an accurate
wet weather flow(WWF) calibration data set. For best accuracy, both the incoming flow into a station and the
pumps response to it will be characterized in the field and reflected in the model. Because incoming flow is not
currently monitored by SCADA, Carollo proposes to retain the services of a Subconsultant to perform flow
monitoring.
Dry and Wet Weather Flow Testing by a Subconsultant:
In order to assess the impact of wet weather on the City's master wastewater conveyance infrastructure,the
services of a Subconsultant will be retained to measure incoming wastewater flow at the City's master lift stations.
These measurements are used to determine the amount of Inflow and Infiltration (I&I) in the sewer system.The
flow testing will be over up to two extended (1 month each) periods (dry/wet)which will be scheduled at the
same timeframe that the City and Carollo perform pressure and pump testing.
Pressure and Pump Testing by the City with Carollo Assistance:
With the aim to verify pump curve/capacity and system pressure, Carollo proposes that the City perform wet well
draw-down testing at master lift stations during two different weather conditions. The field testing should be
programmed as follows:
• After a period of approximately 5 days of dry weather, in parallel with dry weather flow monitoring.
• During a period of wet weather, in parallel with wet weather flow monitoring.
A detailed testing procedure and form to fill out in the field for data collection will be provided by Carollo to the
City. One form shall be filled out per each location tested, each of the testing days.
Six (6) pressure loggers will be provided by Carollo,which shall be installed by the City to measure pressure at
the discharge force main of each master lift station (6 in total) prior to the commencement of the flow
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 4
monitoring and drawdown tests. Prior to the start of Task 2,the City shall identify a location within the valve box
of the master lift stations (typically at ARVs)where a1/4 NPT male thread fitting could be installed.
Two (2) additional Carollo-provided pressure loggers shall be installed by the City at force main locations where
ARVs are accessible and for a duration consistent with flow monitoring. The drawdown testing at master lift
stations is expected to occur within this timeframe.
Subtask 2.3—Collection System Dry and Wet Weather Flow Analysis
Carollo will collect publicly available rainfall data from South Florida Water Management District rain gauges
identified in Subtask 2.2 and classify the return interval and frequency of major rainfall events captured during
the extended period test(s). Dry periods will be identified as well.
For identified dry periods during field testing, characteristic dry weather flow volumes and diurnal patterns will be
developed for each site with recorded data. Base sanitary flows will be compared vs.water billing data within the
master lift station basins to approximate the proportion of groundwater infiltration. Results will be used in dry
weather flow (DWF) scenarios of the hydraulic model.
Wet weather response to the identified major rainfall events will be analyzed for each site with available flow data
from field testing.The I&I response for each test site will be documented and replicated in the wet weather flow
(WWF) scenarios of the hydraulic model. Two storms with significant effects on the influent flow to the SCRWWTP
will be selected for use in hourly calibration and total daily flow verification, respectively. Significant wet weather
events are best determined by detailed data review but are typically considered to be storms greater than 1-inch
which result in a (measurable or observable) response in the observed flow at monitoring locations and the
WWTP.
Subtask 2.4—GIS Data &Coordination
Upon receiving from the City,the requested list of recently developed/redeveloped areas where changes to the
potable water distribution system and wastewater collection system have not yet been reflected in the City GIS,
Carollo will provide a virtual coordination and guidance workshop with the City GIS Department for City staff to
draft necessary updates in the GIS from record drawings.
This task also includes coordination of updates from changes to the systems due to pipe replacement or
improvement projects not recorded in the GIS and gaps identified through other ongoing Task Orders by
Carollo.Virtual meetings are ideal for screenshare and individual multi-screen use for comparison and discussion.
If required, Carollo may provide files in .gdb or.shp format to the City to utilize in GIS update.The City will be
responsible for the integration of the updates into City GIS.
Subtask 2.5—Potable Water SCADA Data, Fire Flow Data, and Facility Records Collection
Carollo will request updated information, including:
• Most up to date GIS water distribution system database (.gdb or.shp format)
o Including geocoded customer location point layer.
• List of recently redeveloped areas where changes to the distribution system have not been reflected in
the GIS (written/email format or.pdf diagrams)
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 5
• Any changes to high service pump stations and storage tanks over the last 9 years (written/email format
or.pdf diagrams, or design drawing .pdf files as needed)
• High service pump station SCADA data for the last 3 years,for the East Water Treatment Plant(WTP) and
the West WTP, including:
o Flow to distribution (hourly frequency) (.xlsx format)
o Pressure to distribution (hourly frequency) (.xlsx format)
o Pressure or speed settings of high service pumps (status On/Off or Speed—signal frequency if
available) (.xlsx format)
o Standard operating procedures (SOPs)for pumps and drives (from O&M Manual), including
normally open or closed valves, normally used high service pumps (during an average demand
day vs. a maximum demand day vs. a day with emergency/fire flow/flushing protocols) (written/
email format or.pdf diagrams)
• Record drawings and cut sheets of the pumps after the last pump upgrade at the East WTP (.pdf format)
• Record drawings and cut sheets of any changes to the high service pumps and/or their configuration at
the West WTP (.pdf format)
• 3 years of SCADA (.xlsx format)for the 3 MG remote pumping and storage facility, including hourly:
o Flow
o Pressure (backfill and discharge as available)
o Tank levels
• 3 years of SCADA (.xlsx format)for the Water Tower, including hourly:
o Flow
o Pressure
o Tank levels
• The following pressure settings (written/email format or.pdf diagrams):
o Filling pressure setting for the ground storage tank (GST).
o System pressure that triggers pumping/withdrawal from the GST
o Typical pressure at which the Water Tower starts filling up
o Typical pressure at which the Water Tower starts emptying
• Hourly pressure at points of the water distribution system where pressure is currently measured by
SCADA/telemetry (.xlsx format)for the past 3 years
• Any pump upgrades at the remote storage and pumping facility (.pdf format)
• Any change in operating strategies for the Water Tower since changes at the East WTP (written/email
format or.pdf diagrams)
These data will be used to update the potable water hydraulic model as described in Task 3, and to calibrate it as
described in Task 4.
Subtask 2.6—Potable Water Service Billing Data Request and Classification
Water consumption information by account location and type will be requested (.xlsx format).This data is usually
obtained from billing/metering services.The City will also provide a geocoded customer point layer(.gdb or.shp
format)to join with and locate in GIS the data provided by the billing/metering services group. Consumption by
account location and type will be used for hydraulic model update as described in Task 3. Carollo requests that
any personal identification information of customers associated with each account be deleted.
Keith Webber, PE
Boynton Beach Utilities
January 15,2025
Page 6
Subtask 2.7—Sewer Exclusions from Water Service in Billing Data, Large Sewer Users, and Septic
Areas Information
Sewer flows will be calculated as a percentage of the potable water consumption for accounts with both water
and wastewater services.To do this, a list or a database field identifying the accounts that only receive potable
water service (that do not have a sewer connection) is requested (.xlsx format). Carollo will exclude such accounts
from the wastewater hydraulic model.
In addition, a list of large wastewater customers and wastewater-only accounts and their location will be
requested (.xlsx format). Carollo requests that any personal identification information of customers associated
with each account be deleted.
Lastly, a map (.pdf electronic format)of the service area will be provided for the City to mark up the areas of the
City that remain on septic tanks.
TASK 3 - HYDRAULIC MODELS CONVERSION AND UPDATE
Carollo recommends that the wastewater hydraulic model be converted from its current software, Innovyze
InfoSWMM,to Bentley SewerGEMS prior to the planned retirement of product support for the Innovyze
InfoSWMM software by the developer(which is expected in 2026). In addition, Carollo recommends that the
conversion be performed concurrently with the update of the model and prior to calibration.This will be the
most cost-efficient manner to perform the software conversion.
To acquire software licensure for both water and wastewater products under a single provider, Carollo
recommends that the potable water model is converted to Bentley WaterGEMS. Similar to the wastewater
software conversion, this conversion would be performed concurrently with the update and prior to calibration.
Carollo will complete the modeling subtasks listed below for the conversion and update of both hydraulic
models.
Subtask 3.1—Wastewater Collection Model Conversion and Update/Verification of Physical
Attributes
In this subtask, Carollo will first package all the current physical attributes of the InfoSWMM model into GIS and
perform a comparison vs.the most current GIS database provided by the City. Carollo will update:
• New infrastructure connected directly to the force main system (no gravity).
• Force main and lift station connectivity.
• Vertical datum and elevations where needed (canal crossings, interstate crossings,wet wells, isolation
valves, changes due to new development and redevelopment).
Carollo will then import the updated physical attributes into a non-proprietary software (EPANET)that will allow a
subsequent import into Bentley SewerGEMS software. Once the base infrastructure is in SewerGEMS, Carollo will:
• Perform topology checks for model connectivity/validity.
• Use provided record drawings to review node elevations and assumed friction factors. Modify model
information if the pipe material has been updated due to recent projects, as information is made
available.
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 7
Subtask 3.2—Migration of Wastewater Sewersheds and Update of Sewer Flow Allocation
Sewershed polygons will be verified and updated from the City's GIS Department, as they have kept and
maintained the previously Carollo-developed sewersheds GIS layer.This update will be performed for all stations
including those not previously in the model.The result will be a single sewershed for each lift station there will be
in the model.The entire service area will be covered by sewersheds, except for areas on septic. Because of the
software conversion, and because a complete wet weather scenario calibration will be performed,these polygons
will be migrated from the GIS layer and embedded in the wastewater model as sewer catchments, which are
actual model elements that will be used for the simulation of rainfall-derived inflow and infiltration (I&I).
Billing records gathered and analyzed in Subtasks 2.6 and 2.7 will be geoprocessed in GIS and aggregated by
sewershed polygon to obtain average base loading flows at the level of lift station. The existing diurnal water use
patterns by account type will be captured and aggregated by sewershed. These base flows and water use
patterns will be compared to actual influent flow data (average and patterns, respectively) at locations where flow
will be monitored during the collection system field testing that will be performed as part of Subtask 2.2.The
resulting relationships will be used to load the different flow components at the different catchment elements of
the wastewater model.
The resulting flow allocation will be contrasted with 2020 Census data by census tract as a means to understand
how population density, as recently recorded by the US Census Bureau, compares to actual sewer service
allocation from metering.This TO does not include calculation or allocation of future/projected flows. However,
this comparison will be useful to understand whether allocation for the analysis of future scenarios (to be
developed under a future TO) shall be done using US Census Bureau projections or metered flows adjusted for
expected growth.
Subtask 3.3—Migration and Update of Sewer Lift Station Operational Attributes
Under this subtask, Carollo will:
• Migrate, review, and update pump curves per data collected during this and other ongoing Carollo TOs.
• Migrate and update pump control (on/off) levels.
• Develop and program logic controls/operational rules consistent with the manner operators operate the
lift stations in the field.
• Analyze lift station SCADA, monitored flows, and/or drawdown test results to determine existing
pumping operations when unavailable from operators. This will be completed to determine logic
controls/rules that will be necessary to mimic in the model.
Subtask 3.4—Potable Water Model Conversion and Update of Physical Attributes.Addition of
Redevelopment,Water Treatment Plant Pumping and Storage Infrastructure, and Interconnects
In this subtask, Carollo will make use of the GIS database provided by the City and as-built records of work
performed at the WTP and storage tank sites. Carollo will update:
• Pipeline and pump connectivity due to replacement, upgrade, redevelopment, or corrections made to
the GIS database by the City's GIS Department.
• Water treatment plant yard piping related to high service pump stations, meters to distribution, and
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 8
storage tanks (other components of the WTP are not necessary to reflect in the potable water
distribution hydraulic model).
• Interconnects.
• Vertical datum and elevations where needed (canal crossings, interstate crossings,tanks, control valves,
pumps, new development and redevelopment included in the GIS database).
In addition, Carollo will:
• Perform topology checks for model connectivity/validity.
• Review node elevations and assumed friction factors. Modify if the pipe material has been updated, as
needed.
Subtask 3.5—Update of Potable Water Demand Allocation
Consumption data from billing records gathered in Subtask 2.6 will be geoprocessed in Excel and ArcGIS. The
Thiessen polygon method will be used to allocate accounts consumption to junctions throughout the model
junctions.
The existing diurnal water use patterns by account type will be used, but their allocation to junctions will be
updated in accordance with land use type updates,to account for development and redevelopment. Several
combinations of demand patterns may be used to reflect mixed land uses where applicable. If separate customer
information is available by account type from Metering Services, proportional demands reflecting the split
between usage type will have respective land use type diurnal patterns applied.
Subtask 3.6—Update of Operational Attributes at the Potable Water Treatment and Pumping
Facilities—From SCADA, SOPs
Carollo will analyze flow and pressure SCADA to determine operational trends and correlations among pumping
operations and resulting system conditions and level of service.These trends and correlations will be used to
program necessary controls in the model.Controls may be demand-based, pressure-based, or tank-level based.
Standard operating procedures for an average flow day and for a maximum flow day, as available, and system
settings as provided by the City, will also be used to program controls and dependencies in the average and
maximum day scenarios.
SCADA data will also be used to update the seasonal production pattern,which will be used to relate conditions
in which the model is calibrated to average day demand and maximum day demand.
TASK 4—HYDRAULIC MODELS CALIBRATION AND EXISTING SCENARIOS
To obtain hydraulic models that closely mimic the City's systems operations, the hydraulic models need to be
reasonably calibrated. Carollo strives to develop stable models that are over 95 percent accurate for flow
predictions and within 2-7 psi for pressure, subject to the quality of the data.The resulting models would be
useful for master planning as well as for operational decision-making. If the models are also able to replicate
diverse existing scenarios (per field monitoring data and SCADA),the models would also be useful in conceptual
design.
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 9
Subtask 4.1—Wastewater Collection System Dry Weather Flow Calibration
In this subtask, Carollo will adjust appropriate variables such as flow allocations and diurnal patterns, lift station
operation settings, and roughness coefficients to calibrate the model to the following 24-hour extended period
patterns:
• Boynton Beach influent flow to the headworks of the SCRWWTP during DWF conditions.
• Five (5) master lift stations flows as monitored in Task 2.
• Five (5) master lift stations discharge pressure from pressure monitoring during drawdown testing per
Task 2.
• Pressure collected in the field from up to three (3) accessible ARV locations per Task 2.
Dry weather calibration is typically considered to be successful if it meets the following guidelines:
• Peak Flow Rate: -10%to +10%of measured, or ±0.1 MGD for low flow sites
• Flow Volume: -10%to +10%of measured, or ±0.1 MGD for low flow sites
• Shape:the shape of modeled and metered flow curves should be similar.
• Timing: The timing of peaks,troughs, and recessions of modeled and metered flow curves should be
similar.
• Force Main Pressure:within ±2 to 7 psi.
Subtask 4.2—Wastewater Collection System Wet Weather Flow Calibration
In this subtask, Carollo will adjust appropriate variables such as R, T, and K coefficients for rainfall derived
infiltration and inflow simulation to calibrate the model to the following hourly, multi-day extended period
patterns:
• Boynton Beach influent flow to the headworks of the SCRWWTP during WWF conditions, as identified in
WWF monitoring from Task 2.
• Six(6) master lift stations total WWF, as monitored in Task 2.
• Six (6) master lift stations discharge pressure or pump run patterns, as available from pressure
monitoring or drawdown testing per Task 2.
• Pressure collected in the field from up to two (2) accessible ARV locations as available per Task 2.
Wet weather calibration is typically considered to be successful if it meets the following guidelines:
• Peak Flow Rate: -15%to +25%of measured, or ±0.1 MGD for low flow sites
• Flow Volume: -10%to +20%of measured, or ±0.1 MGD for low flow sites
• Shape:the shape of modeled and metered flow curves should be similar.
• Timing: The timing of peaks,troughs, and recessions of modeled and metered flow curves should be
similar.
• Force main pressure:within ±2 to 7 psi.
If the flow monitoring effort included in this scope of work does not capture a significant wet weather event for
calibration, the City may choose to extend the monitoring period at additional cost.
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 10
Subtask 4.3— Potable Water Distribution System Calibration to Existing Average Annual Demand
In this subtask, Carollo will adjust appropriate variables to calibrate the potable water model to the following 24-
hour extended period patterns:
• East and West WTPs finished water flow and pressure to distribution.
• Water Tower and remote pumping facility flow and tank levels.
• Select pressure points in the distribution system, as available from SCADA.
The calibration effort will be initially completed under the flow conditions existing at the time of SCADA data
retrieval. The calibrated scenario will be adjusted to average daily demand conditions using the updated seasonal
water production pattern generated as part of Subtask 3.6.
TASK S— DELIVERABLES AND DOCUMENTATION
A calibrated wastewater model that is suitable to evaluate the existing wastewater collection system physically
and operationally under both DWF and WWF conditions will result from this TO upon completion. A calibrated
water hydraulic model that is suitable to evaluate the potable water distribution system operations under average
day conditions will also result from this TO upon completion. The calibrated scenarios will provide the City with
the ability to run a variety of analyses and master planning scenarios that the City may elect to obtain as part of a
future TO.
With the objective of documenting changes to the City's hydraulic models for City staff reference, the results of
the project will be summarized in a Draft and a Final Technical Memorandums, which will include:
• An introduction including general purpose and scope,
• Condensed models update documentation such as data-supported parameters used to update and set
up the new elements in the models, calibration setup and accuracy, and necessary information
applicable to the DWF and WWF wastewater calibration scenarios, and average day potable water
calibration scenario.
• Conclusions and recommendations for management of the models moving forward.
Carollo will focus on presenting information in graphics and maps rather than using primarily report text.
Detailed tables will be used to summarize models input and calibration results. City staff will be asked to provide
comments on the Draft Technical Memorandum. The City may also elect to review the updated hydraulic models
at the time of Draft Technical Memorandum submittal. Upon receipt of City comments, the document will be
revised based on the comments and a final version will be issued.
Deliverables:
• Collection system hydraulic model (SewerGEMS file format)
• Potable water system model. (WaterGEMS file format)
• Project GIS files (in .gdb format)
• Draft TM (electronic .pdf)
Keith Webber, PE
Boynton Beach Utilities
January 15, 2025
Page 11
• Final TM (electronic .pdf)
PROJECT SCHEDULE
A detailed project schedule will be provided at the project Kickoff Meeting, or upon coordination with the City on
availability to perform the field testing. It is anticipated that the entire effort will be completed in 12 months. Per
City direction, precedence will be given to the wastewater model conversion and updates, which will commence
upon receipt of NTP. However, it should be noted that the timing of model calibration to wet weather conditions
will be dependent on the ability to capture a significant wet weather event during field testing.
CITY RESPONSIBILITIES
Because of the nature of this project, certain assumptions apply to this Scope of Services. To the extent possible,
these assumptions are stated within this document and are reflected in the budget. If the project task
requirements are different from the assumptions presented in this Scope of Services, or if the City desires
additional services, the resultant change in scope will serve as a basis for amending this project assignment or
initiating the development of a new project assignment as agreed to by both the City and Carollo. The following
assumptions and City responsibilities apply to this project:
• Carollo shall be entitled to rely upon the accuracy of the data and information supplied by the City
without independent review or evaluation.
• The City shall attend all workshops and review meetings to maintain the progress of the project
according to the schedule.
• The City will provide Carollo with access to facilities/sites for data gathering and data validation if/as
needed.
• The City will assist with field testing as necessary, including making personnel available for the drawdown
tests, installation of pressure/data loggers, and fire hydrant testing. Carollo will provide up to eight (8)
pressure loggers for field testing.
• The City will provide all required information within reasonable time, which is considered no longer than
2 weeks, after notice to proceed. Carollo will provide a data request list at the project kickoff meeting.
The schedule is based on timely receipt of data and may shift due to data requirements. The City shall
review Draft deliverables and provide comments to Carollo within a two-week period.
• Although conversion of the models to a new software platform will be completed under this TO, the
procurement of the new software and licensing to the City are not included in this TO. Carollo will use its
own software for the development of the scope and model deliverables will need proprietary (Bentley)
software to be used by others, including the City. Software and licensing shall be procured separately by
the City for in-house use.
PROJECT FEES
The compensation terms are based on a Fee Not-to-Exceed basis with an upper limit of$400,000 with an
estimated breakdown by Task as shown in Exhibit B. Labor rates are based on the contract fee schedule shown in
Keith Webber, PE
Boynton Beach Utilities
January 15,2025
Page 12
the base contract. Cost for mileage for in-person meetings has been estimated using the United States Internal
Revenue Service 2025 Standard Mileage Rate of$0.70/mile. Rental cost for pressure loggers is included at a rate
of$250/pressure logger unit and this fee includes rental of 8 units.
Please contact us if you have questions or comments. We look forward to working with you on this project.
Sincerely,
CAROLLO ENGINEERS, INC.
M.Angelica Gregory, PhD., PE
Project Manager
Elizabeth Fujikawa, PE, LEED AP
Vice President
Exhibit B;Schedule
Legend: Meeting• Deliverable.
2025 2026
ASKS .
March April May June July Aug Sep Oct Nov Dec Jan Feb March
Task 1:Project Management and Meetings
1.1:Project Management and Communication
1.2:Project Kickoff and Progress Meetings U •
1.3:Coordination with other ongoing Task Orders
Task 2:Data Collection and Analysis
2.1:Collection System Data Collection:SCADA and Wet Weather Records
2.2:Collection System Field Testing
(Includes Carollo Pressure Testing and I/1 Test by Subconsultant)
2.3:Collection System Wet Weather Flow Analysis(for calibration to actual storm events)
2.4:GIS Data and Coordination
2.5:Potable Water SCADA Data,Fire Flow Data,and Facilities Records Collection
2.6:Potable Water Service Billing Data Request and Classification
2.7:Sewer Exclusions from Potable Water Service in Billing Data,Large Sewer Users,and Septic Areas
Task 3:Hydraulic Models Conversion and Update
3.1:Wastewater Collection Model Conversion and Update/Verification of Physical Attributes
3.2:Migration of Wastewater Sewersheds and Update of Sewer Flow Allocation
3.3:Migration and Update/Verification of Sewer Lift Station Operational Attributes
3.4:Potable Water Model Conversion and Update of Physical Attributes.Addition of Redevelopment.Addition
of new HSPS and Tank.Addition of Interconnects.
3.5:Update of Potable Water Demand Allocation
3.6:Update of Operational Attributes at the Potable Water Treatment and Pumping Facilities-from SCADA,
Task 4: Hydraulic Models Calibration and Existing Scenarios
4.1:Wastewater Collection System Dry Weather Flow Calibration
4.2:Wastewater Collection System Wet Weather Flow Calibration
4.3:Potable Water System Calibration(Ideally to Existing Average Annual Demand)
4.4:Potable Water System Fire Flow Calibration
Task 5:Documentation
5.1 Draft Technical Memorandum `
5.2 Final Technical Memorandum •
Exhibit C:BBU Wastewater and Potable Water Hydraulic Models Update and Calibration
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TASK NO. a a Nco rn ° » m ^ a a n 9
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Hourly Rates$300.00 $260.00 $250.00 $225.00 $165.00 $200.00 $120.00
Task 1:Project Management and Meetings '
1.1:Project Management and Communication 4 48 52 $13,680.00 $13,680.00
1.2:Project Kickoff and Progress Meetings 8 24 24 32 88 $19,320.00 $113.61 $19,433.61
1.3:Coordination with other ongoing Task Orders 12 12 4 4 32 $8.280.00 $8,280.04
172 $41,280.00 $113.61 $41,393.61
Task 2:Data Collection and Analysis
2.1:Collection System Data Collection:SCADA and Wet Weather Records 12 32 44 $10,320.00 $10,320.00
2.2:Collection System Field Testing 4 12 32 48 $9,020.00 $56,032.39 $5,603.24 $2,049.00 $72,704.63
(Includes Carollo Pressure Testing and Ill Test by Subconsultant
2.3:Collection System Wet Weather Flow Analysis(for calibration to actual storm events) 24 40 64 $12,840.00 $12,840.00
2.4:GIS Data and Coordination 10 48 58 $10,520.00 $10,520.00
2.5:Potable Water SCADA Data.Fire Flow Data,and Facilities Records Collection 10 20 20 50 $10,400.00 $10,400.00
2.6:Potable Water Service Billing Data Request and Classification 4 28 32 $5.660.00 $5,660.00
2.7:Sewer Exclusions from Potable Water Service in Billing Data,Large Sewer Users, $3,020.00 $3.020.00
and Septic Areas Information 4 _ 12 16
312 $61,780.00 $56,032.39 $2,049.00 $119,861.39
Task 3:Hydraulic Models Conversion and Update
3.1:Wastewater Collection Model Conversion and UpdateNerification of Physical $14,390.00 $14,390.00
Attributes 4 2 50 8 64
3.2:Migratiion of Wastewater Sewersheds and Update of Sewer Flow Allocatior 32 2 26 8 68 $16,270.00 $16,270.00
3.3:Migration and UpdateNerification of Sewer Lift Station Operational Attributes 16 2 25 24 67 $14,245.00 $14,245.00
3.4:Potable Water Model Convestion and Update of Physical Attributes.Addition of 40 4 88 20 535,200.00 $35.200.00
Redevelopment.Addition of new HSPS and Tank.Addition of Interconnects. 152
3.5:Update of Potable Water Demand Allocation 32 4 32 12 80 $18,920.00 $18,920.00
3.6:Update of Operational Attributes at the Potable Water Treatment and Pumping
Facilities-from SCADA,SOPs. 16 4 16 36 $8 760.00 $8,760.00
467 $107,785.00 $0.00 $107,785.00
Task 4: Hydraulic Models Calibration and Existing Scenarios
4.1:Wastewater Collection System Dry Weather Flow Calibration 24 4 80 108 $25,240.00 $25.240.00
4.2:Wastewater Collection System Wet Weather Flow Calibration 60 4 120 184 $43,600.00 543,600.00
4.3:Potable Water System Calibration(Ideally to Existing Average Annual Demand) 16 4 100 120 $27,660.00 $27,660.00
Task 5:Documentation 412 S96,500.00 $0.00 S96,500.00
5.1 Draft Technical Memorandum 6 16 64 16 102 $22.280.00 $22,280 00
5.2 Final Technical Memorandum 12 36 8 56 $12.184.44 $12,180.00
158 $34,460.00 $0.00 $34,460.00
Subtotal Hours 30 420 30 729 240 48 24 1521 $341,805.00 $56,032.39
Subtotal Fee $9,000 $109,200 $7,500 $164,025 $39,600 $9,600 $2,880 $341,805.00 $56,032.39 1 I $400,000.00