HomeMy WebLinkAbout055-26 RESOLUTIONPage 1
113 West Mountain Street
Fayetteville, AR 72701
(479) 575-8323
Resolution: 55-26
File Number: 2026-221
A RESOLUTION TO APPROVE A PROFESSIONAL ENGINEERING SERVICES AGREEMENT WITH
RJN GROUP, INC., PURSUANT TO RFQ #25-01 SELECTION #13, IN AN AMOUNT NOT TO EXCEED
$843,610.00 FOR PHASE I OF THE 2026 WASTEWATER COLLECTION SYSTEM MASTER PLAN, TO
APPROVE A PROJECT CONTINGENCY IN THE AMOUNT OF $160,380.00, AND TO APPROVE A
BUDGET ADJUSTMENT
WHEREAS, on September 2, 2025, the City formally selected RJN Group, Inc. to develop a scope and fee for the
City’s Wastewater Collection System Master Plan; and
WHEREAS, staff worked with RJN to develop a comprehensive scope for Phase 1 of the project, which includes flow
monitoring, inflow/infiltration analysis, and model update, calibration, and validation activities to support CIP planning
and optimization based on Fayetteville’s growth and densification.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF FAYETTEVILLE,
ARKANSAS:
Section 1: That the City Council of the City of Fayetteville, Arkansas hereby authorizes Mayor Rawn to sign a
professional engineering services agreement with RJN Group, Inc. for Phase I of the 2026 Wastewater Collection
System Master Plan, pursuant to RFQ #25-01 Selection #13, in an amount not to exceed $843,610.00, and further
approves a project contingency in the amount of $160,380.00.
Section 2: That the City Council of the City of Fayetteville, Arkansas hereby approves a budget adjustment, a copy of
which is attached to this Resolution.
PASSED and APPROVED on February 17, 2026
Approved:
_______________________________
Molly Rawn, Mayor
Attest:
_______________________________
Kara Paxton, City Clerk Treasurer
City of Fayetteville Staff Review Form
2026-221
Item ID
2/17/2026
City Council Meeting Date - Agenda Item Only
N/A for Non-Agenda Item
Tim Nyander 1/28/2026 WATER SEWER (720)
Submitted By Submitted Date Division / Department
Action Recommendation:
Staff recommends approval of an agreement with RJN Group, Inc. in an amount not to exceed $843,610.00 for
engineering services associated with Phase I of the 2026 Wastewater Collection System Master Plan, approval of a
project contingency in the amount of $160,380.00, and approval of a budget adjustment.
Budget Impact:
5400.720.5700-5314.00 Water and Sewer
Account Number Fund
02017.2601 Sanitary Sewer Rehabilitation
Project Number Project Title
Budgeted Item?Yes Total Amended Budget $ 3,893,100.00
Expenses (Actual+Encum)$262,973.90
Available Budget $ 3,630,126.10
Does item have a direct cost?Yes Item Cost $ 1,003,990.00
Is a Budget Adjustment attached?Yes Budget Adjustment $425,226.00
$288.00 Remaining Budget $ 3,051,362.10
V20221130
Purchase Order Number:Previous Ordinance or Resolution #
Change Order Number:Approval Date:
Original Contract Number:
Comments:RFQ 25-01
2/17/2026
Page 1
City of Fayetteville, Arkansas
Legislation Text
113 West Mountain Street
Fayetteville, AR 72701
(479) 575-8323
File #: 2026-221
A RESOLUTION TO APPROVE A PROFESSIONAL ENGINEERING SERVICES
AGREEMENT WITH RJN GROUP, INC., PURSUANT TO RFQ #25-01 SELECTION #13, IN
AN AMOUNT NOT TO EXCEED $843,610.00 FOR PHASE I OF THE 2026 WASTEWATER
COLLECTION SYSTEM MASTER PLAN, TO APPROVE A PROJECT CONTINGENCY IN
THE AMOUNT OF $160,380.00, AND TO APPROVE A BUDGET ADJUSTMENT
WHEREAS, on September 2, 2025, the City formally selected RJN Group, Inc. to develop a scope and
fee for the City’s Wastewater Collection System Master Plan; and
WHEREAS, staff worked with RJN to develop a comprehensive scope for Phase 1 of the project, which
includes flow monitoring, inflow/infiltration analysis, and model update, calibration, and validation
activities to support CIP planning and optimization based on Fayetteville’s growth and densification.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
FAYETTEVILLE, ARKANSAS:
Section 1: That the City Council of the City of Fayetteville, Arkansas hereby authorizes Mayor Rawn to
sign a professional engineering services agreement with RJN Group, Inc. for Phase I of the 2026
Wastewater Collection System Master Plan, pursuant to RFQ #25-01 Selection #13, in an amount not to
exceed $843,610.00, and further approves a project contingency in the amount of $160,380.00.
Section 2: That the City Council of the City of Fayetteville, Arkansas hereby approves a budget
adjustment, a copy of which is attached to this Resolution.
Mailing address:
113 W. Mountain Street
Fayetteville, AR 72701
www.fayetteville-ar.gov
CITY COUNCIL MEMO
2026-221
MEETING OF FEBRUARY 17, 2026
TO: Mayor Rawn and City Council
THROUGH: Keith Macedo, Chief of Staff
FROM: Tim Nyander, Utilities Director
SUBJECT: RJN Group, Inc. - 2026 Wastewater Collection System Master Plan
RECOMMENDATION:
Staff recommends approval of an agreement with RJN Group, Inc. in an amount not to exceed $843,610.00 for
engineering services associated with Phase I of the 2026 Wastewater Collection System Master Plan, approval
of a project contingency in the amount of $160,380.00, and approval of a budget adjustment, pursuant to RFQ
25-01, Selection #13.
BACKGROUND:
On September 2, 2025 the City of Fayetteville formally selected RJN Group, Inc. via RFQ 25-01, Selection #13
to develop a scope and fee for the City’s Wastewater Collection System Master Plan. Staff worked with RJN to
develop a comprehensive scope for flow monitoring, inflow/infiltration analysis, and model update, calibration,
and validation activities to support CIP planning and optimization based on Fayetteville’s growth and
densification. The Arkansas Department of Health, and industry best practices, recommend updating master
plans every 5 years for systems like Fayetteville experiencing significant change and growth. The last update
to this plan was completed in 2020.
A wastewater collection system hydraulic model is only accurate when field-verified and calibrated using both
dry and wet-weather flow monitoring (measuring the actual flow in the pipes). A significant portion of the effort
needed in this model update is placing and maintaining flow monitors in strategic locations throughout the City
in the Spring of 2026. The model will also be updated to include all changes and additions in the wastewater
system due to new developments and capital improvement projects. This study will determine future capacity
upgrades required and provide capital project cost estimating.
DISCUSSION:
Phase 1 includes the flow monitoring, infiltration and inflow analysis, a sewer model update, calibration, and
validation activities required to support the CIP optimization effort. The not-to-exceed fee for this phase is
$843,610.00. A project contingency is also recommended in the amount of $160,380.00 for additional flow
monitoring time this spring, in the event that conditions are very dry and acceptable data has not been
recorded.
Phase 2 focuses primarily on the optimization and capital planning tasks, which will mostly occur in 2027 after
Phase 1 is completed. The fee for Phase 2 will be brought forward through a future amendment to this contract
and is expected to be $453,770.00.
BUDGET/STAFF IMPACT:
Mailing address:
113 W. Mountain Street
Fayetteville, AR 72701
www.fayetteville-ar.gov
Funds will be moved into the Sanitary Sewer Rehabilitation account to cover the cost of this engineering
services agreement.
ATTACHMENTS: 3. Staff Review Form, 4. Budget Adjustment, 5. Agreement
City of Fayetteville, Arkansas - Budget Adjustment (Agenda)
Budget Year Division
/Org2 WATER SEWER (720)
Adjustment Number
2026 Requestor:Cheryl Partain
BUDGET ADJUSTMENT DESCRIPTION / JUSTIFICATION:
A budget adjustment is needed in the Sanitary Sewer Rehabilitation project to cover the agreement with RJN Group, Inc.
Agreement is for engineering services assoicated with Phase I of the 2026 Wastewater Collection System Master Plan.
Budgeted funds from multiple capital projects need to be moved to cover the cost of this project. Some budgeted funds
being moved are cost savings from other completed projects.
COUNCIL DATE:2/17/2026
ITEM ID#:2026-221
Holly Black
1/29/2026 10:59 AM
Budget Division Date
TYPE:D - (City Council)
JOURNAL #:
GLDATE:
RESOLUTION/ORDINANCE CHKD/POSTED:/
v.202615TOTAL--
Increase / (Decrease)Project.Sub#
Account Number Expense Revenue Project Sub.Detl AT Account NameGLACCOUNTEXPENSEREVENUEPROJECTSUBATDESCRIPTION X
5400.720.5700-5314.00 843,610 -02017 2601 EX Professional Services
5400.720.5700-5911.99 160,380 -02017 2601 EX Contingency - Capital Project
5400.720.5700-5815.00 (578,764)-02017 1 EX Improvements - Sewer
5400.720.5600-5810.00 (14,274)-10006 1 EX Easements
5400.720.5600-5808.00 (4,179)-10006 1 EX Improvements - Water Line
5400.720.5600-5314.00 (4,383)-10006 1 EX Professional Services
5400.720.5600-5314.04 (2,221)-10006 1 EX Professional Services - Engineering Contra
5400.720.5600-5301.00 (300)-10006 1 EX Public Notification
5400.720.1840-5801.00 (200,000)-15019 1 EX Fixed Assets
5400.730.5800-5314.00 (73,286)-13018 1 EX Professional Services
5400.730.5800-5314.00 (26,714)-13018 1501 EX Professional Services
5400.720.5600-5808.00 (93,762)-17004 1 EX Improvements - Water Line
5400.720.5600-5314.00 (6,107)-17004 1 EX Professional Services
--
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www.rjn.com
Engineering
Infrastructure for
Tomorrow
4220 N Crossover Rd, Suite 101 ● Fayetteville, Arkansas 72703 ● 479.879.4891
January 27, 2026
Mr. Corey Granderson, P.E.
Utilities Engineer
City of Fayetteville, Arkansas
2435 Industrial Dr
Fayetteville, AR 72701
Subject: City of Fayetteville – 2026 Wastewater Collection System (WWCS) Master Plan, Phase 1
Dear Mr. Granderson:
RJN Group (RJN) appreciates the opportunity to submit this proposal for the City of Fayetteville’s
(City) 2026 Wastewater Collection System (WWCS) Master Plan, Phase 1.
The goal of the WWCS Master Plan is to use data-driven analysis to understand system performance,
identify current and future capacity constraints, and guide cost-effective capital improvements that
ensure reliable service for the City’s current and future customers. Phase 1 of the WWCS Master Plan
includes the following:
system-wide flow and rainfall monitoring,
inflow and infiltration (I/I) analysis,
model network updates,
model calibration and validation,
future growth augmentation, and
reporting of the Phase 1 tasks.
In Phase 2 of this project, WCS Engineering, as a subconsultant to RJN, will assist in a CIP
optimization effort to identify the most cost-effective improvement strategies and perform a
sensitivity analysis under varying levels of service to understand the capital costs associated with
implementing a new level of service.
The combination of these efforts will provide the City with a valuable decision-making tool to
support long-term budgetary planning and ensure that the wastewater collection system continues
to serve its customers as the City continues to grow.
Phase 1 will be invoiced on a unit price and lump sum, percent complete basis for a total not-to-
exceed fee of $843,610.00. Complete Scope of Services, Pricing, Schedule, and Map are provided in
the following exhibits:
Exhibit A – Scope of Services
Exhibit B – Project Map
Exhibit C – Pricing
Exhibit D – Project Schedule
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 2
We are looking forward to the opportunity to work with the City on this important project. It is our
pleasure to submit this proposal to you. Please feel free to contact Daniela Lopez at (214) 422-4919 if
you would like to discuss this proposal or have any questions.
Sincerely,
Daniela Lopez, P.E. Colton Bryant, P.E.
National Practice Leader Project Manager
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 3
AGREEMENT
For
PROFESSIONAL ENGINEERING SERVICES
Between
CITY OF FAYETTEVILLE, ARKANSAS
And
RJN Group, Inc.
THIS AGREEMENT is made as of __________________ , 2026, by and between City of Fayetteville,
Arkansas, acting by and through its Mayor (hereinafter called CITY OF FAYETTEVILLE) and
RJN Group (hereinafter called ENGINEER).
CITY OF FAYETTEVILLE requires professional engineering services in connection with the 2026
Wastewater Collection System Master Plan. Therefore, CITY OF FAYETTEVILLE and ENGINEER in
consideration of their mutual covenants agree as follows:
ENGINEER shall serve as CITY OF FAYETTEVILLE’s professional engineering consultant in those
assignments to which this Agreement applies and shall give consultation and advice to CITY OF
FAYETTEVILLE during the performance of ENGINEER’s services. All services shall be performed
under the direction of a professional engineer registered in the State of Arkansas and qualified in
the particular field.
AUTHORIZATION OF SERVICES
1.1 Services on any assignment shall be undertaken only upon written Authorization of CITY
OF FAYETTEVILLE and agreement of ENGINEER.
1.2 Assignments may include services described hereafter as Basic Services or as Additional
Services of ENGINEER.
1.3 Changes, modifications or amendments in scope, price or fees to this contract shall not
be allowed without a formal contract amendment approved by the Mayor and the City
Council in advance of the change in scope, costs, fees, or delivery schedule.
BASIC SERVICES OF ENGINEER
2.1 Perform professional services in connection with the Project as hereinafter stated.
2.1.1 The Scope of Services to be furnished by ENGINEER during the Project and is included
in Exhibit A attached hereto and made part of this Agreement.
2.2 ENGINEER shall coordinate their activities and services with the CITY OF FAYETTEVILLE.
ENGINEER and CITY OF FAYETTEVILLE agree that ENGINEER has full responsibility for the
engineering services.
February 17
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 4
RESPONSIBILITIES OF CITY OF FAYETTEVILLE
3.1 CITY OF FAYETTEVILLE shall, within a reasonable time, so as not to delay the services of
ENGINEER.
3.1.1 Provide full information as to CITY OF FAYETTEVILLE’s requirements for the Project.
3.1.2 Assist ENGINEER by placing at ENGINEER’s disposal all available information pertinent
to the assignment including previous reports and any other data relative thereto.
3.1.3 Assist ENGINEER in obtaining access to property reasonably necessary for ENGINEER
to perform its services under this Agreement.
3.1.4 Examine all studies, reports, sketches, cost opinions, proposals, and other documents
presented by ENGINEER and render in writing decisions pertaining thereto.
3.1.5 The Utilities Director is the CITY OF FAYETTEVILLE’s project representative with respect
to the services to be performed under this Agreement. The Utilities Director shall have
complete authority to transmit instructions, receive information, interpret and define
CITY OF FAYETTEVILLE’s policies and decisions with respect to materials, equipment,
elements and systems to be used in the Project, and other matters pertinent to the
services covered by this Agreement.
3.1.6 CITY OF FAYETTEVILLE and/or its representative will review all documents and provide
written comments to ENGINEER in a timely manner.
PERIOD OF SERVICE
4.1 This Agreement will become effective upon the first written notice by CITY OF
FAYETTEVILLE authorizing services hereunder.
4.2 The provisions of this Agreement have been agreed to in anticipation of the orderly
progress of the Project through completion of the services stated in the Agreement.
ENGINEER will proceed with providing the authorized services immediately upon receipt
of written authorization from CITY OF FAYETTEVILLE. Said authorization shall include the
scope of the services authorized and the time in which the services are to be completed.
The anticipated schedule for this project is included as Exhibit D.
PAYMENTS TO ENGINEER
5.1 The maximum not-to-exceed amount authorized for this Agreement is $843,610.00. The
CITY OF FAYETTEVILLE shall compensate ENGINEER based on a Unit Price or Lump Sum
basis as described in Exhibit C.
5.2 Statements
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 5
5.2.1 Monthly statements for each calendar month shall be submitted to CITY OF
FAYETTEVILLE or such parties as CITY OF FAYETTEVILLE may designate for professional
services consistent with ENGINEER’s normal billing schedule. Once established, the
billing schedule shall be maintained throughout the duration of the Project.
Applications for payment shall be made in accordance with a format to be developed
by ENGINEER and approved by CITY OF FAYETTEVILLE. Applications for payment shall
be accompanied each month by the updated project schedule as the basis for
determining the value earned as the work is accomplished. Final payment for
professional services shall be made upon CITY OF FAYETTEVILLE’s approval and
acceptance with the satisfactory completion of the study and report for the Project.
5.3 Payments
5.3.1 All statements are payable upon receipt and due within thirty (30) days. If a portion of
ENGINEER’s statement is disputed by CITY OF FAYETTEVILLE, the undisputed portion
shall be paid by CITY OF FAYETTEVILLE by the due date. CITY OF FAYETTEVILLE shall
advise ENGINEER in writing of the basis for any disputed portion of any statement.
CITY OF FAYETTEVILLE will make reasonable effort to pay invoices within 30 days of
date the invoice is approved, however, payment within 30 days is not guaranteed.
5.4 Final Payment
5.4.1 Upon satisfactory completion of the work performed under this Agreement, as a
condition before final payment under this Agreement, or as a termination settlement
under this Agreement, ENGINEER shall execute and deliver to CITY OF FAYETTEVILLE a
release of all claims against CITY OF FAYETTEVILLE arising under or by virtue of this
Agreement, except claims which are specifically exempted by ENGINEER to be set forth
therein. Unless otherwise provided in this Agreement or by State law or otherwise
expressly agreed to by the parties to this Agreement, final payment under this
Agreement or settlement upon termination of this Agreement shall not constitute a
waiver of CITY OF FAYETTEVILLE’s claims against ENGINEER or his sureties under this
Agreement or applicable performance and payment bonds, if any.
GENERAL CONSIDERATIONS
6.1 Insurance
6.1.1 During the course of performance of these services, ENGINEER will maintain (in United
States Dollars) the following minimum insurance coverages:
Type of Coverage Limits of Liability
Workers’ Compensation Statutory
Employers’ Liability $500,000 Each Accident
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 6
Commercial General Liability
Bodily Injury and $1,000,000 Combined Single Limit
Property Damage
Automobile Liability:
Bodily Injury and $1,000,000 Combined Single Limit
Property Damage
Professional Liability Insurance $1,000,000 Each Claim
ENGINEER will provide to CITY OF FAYETTEVILLE certificates as evidence of the
specified insurance within ten days of the date of this Agreement and upon each
renewal of coverage.
6.1.2 CITY OF FAYETTEVILLE and ENGINEER waive all rights against each other and their
officers, directors, agents, or employees for damage covered by property insurance
during and after the completion of ENGINEER’s services.
6.2 Professional Responsibility
6.2.1 ENGINEER will exercise reasonable skill, care, and diligence in the performance of
ENGINEER’s services and will carry out their responsibilities in accordance with
customarily accepted professional engineering practices. CITY OF FAYETTEVILLE will
promptly report to ENGINEER any defects or suspected defects in ENGINEER’s services
of which CITY OF FAYETTEVILLE becomes aware, so that ENGINEER can take measures
to minimize the consequences of such a defect. CITY OF FAYETTEVILLE retains all
remedies to recover for its damages caused by any negligence of ENGINEER.
6.3 Cost Opinions and Projections
6.3.1 Cost opinions and projections prepared by ENGINEER relating to construction costs
and schedules, operation and maintenance costs, equipment characteristics and
performance, and operating results are based on ENGINEER’s experience,
qualifications, and judgment as a design professional. Since ENGINEER has no control
over weather, cost and availability of labor, material and equipment, labor productivity,
construction Contractors’ procedures and methods, unavoidable delays, construction
Contractors’ methods of determining prices, economic conditions, competitive
bidding or market conditions, and other factors affecting such cost opinions or
projections, ENGINEER does not guarantee that actual rates, costs, performance,
schedules, and related items will not vary from cost opinions and projections prepared
by ENGINEER.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 7
6.4 Changes
6.4.1 CITY OF FAYETTEVILLE shall have the right to make changes within the general scope
of ENGINEER’s services, with an appropriate change in compensation and schedule
only after Fayetteville City Council approval of such proposed changes and, upon
execution of a mutually acceptable amendment or change order signed by the Mayor
of the CITY OF FAYETTEVILLE and the duly authorized officer of ENGINEER.
6.5 Termination
6.5.1 This Agreement may be terminated in whole or in part in writing by either party in the
event of substantial failure by the other party to fulfill its obligations under this
Agreement through no fault of the terminating party, provided that no termination
may be effected unless the other party is given:
6.5.1.1 Not less than ten (10) calendar days written notice (delivered by certified mail,
return receipt requested) of intent to terminate,
6.5.1.2 An opportunity for consultation with the terminating party prior to termination.
6.5.2 This Agreement may be terminated in whole or in part in writing by CITY OF
FAYETTEVILLE for its convenience, provided that ENGINEER is given:
6.5.2.1 Not less than ten (10) calendar days written notice (delivered by certified mail,
return receipt requested) of intent to terminate,
6.5.2.2 An opportunity for consultation with the terminating party prior to termination.
6.5.3 If termination for default is effected by CITY OF FAYETTEVILLE, an equitable adjustment
in the price provided for in this Agreement shall be made, but
6.5.3.1 No amount shall be allowed for anticipated profit on unperformed services or other
work,
6.5.3.2 Any payment due to ENGINEER at the time of termination may be adjusted to cover
any additional costs to CITY OF FAYETTEVILLE because of ENGINEER’s default.
6.5.4 If termination for default is effected by ENGINEER, or if termination for convenience is
effected by CITY OF FAYETTEVILLE, the equitable adjustment shall include a reasonable
profit for services or other work performed. The equitable adjustment for any
termination shall provide for payment to ENGINEER for services rendered and
expenses incurred prior to the termination, in addition to termination settlement costs
reasonably incurred by ENGINEER relating to commitments which had become firm
prior to the termination.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 8
6.5.5 Upon receipt of a termination action under Paragraphs 6.5.1 or 6.5.2 above, ENGINEER
shall:
6.5.5.1 Promptly discontinue all affected work (unless the notice directs otherwise),
6.5.5.2 Deliver or otherwise make available to CITY OF FAYETTEVILLE all data, drawings,
specifications, reports, estimates, summaries and such other information and
materials as may have been accumulated by ENGINEER in performing this
Agreement, whether completed or in process.
6.5.6 Upon termination under Paragraphs 6.5.1 or 6.5.2 above CITY OF FAYETTEVILLE may
take over the work and may award another party an agreement to complete the work
under this Agreement.
6.5.7 If, after termination for failure of ENGINEER to fulfill contractual obligations, it is
determined that ENGINEER had not failed to fulfill contractual obligations, the
termination shall be deemed to have been for the convenience of CITY OF
FAYETTEVILLE. In such event, adjustments of the agreement price shall be made as
provided in Paragraph 6.5.4 of this clause.
6.6 Delays
6.6.1 In the event the services of ENGINEER are suspended or delayed by CITY OF
FAYETTEVILLE or by other events beyond ENGINEER’s reasonable control, ENGINEER
shall be entitled to additional compensation and time for reasonable costs incurred by
ENGINEER in temporarily closing down or delaying the Project.
6.7 Rights and Benefits
6.7.1 ENGINEER’s services will be performed solely for the benefit of CITY OF FAYETTEVILLE
and not for the benefit of any other persons or entities.
6.8 Dispute Resolution
6.8.1 Scope of Paragraph: The procedures of this Paragraph shall apply to any and all
disputes between CITY OF FAYETTEVILLE and ENGINEER which arise from, or in any
way are related to, this Agreement, including, but not limited to the interpretation of
this Agreement, the enforcement of its terms, any acts, errors, or omissions of CITY OF
FAYETTEVILLE or ENGINEER in the performance of this Agreement, and disputes
concerning payment.
6.8.2 Exhaustion of Remedies Required: No action may be filed unless the parties first
negotiate. If timely Notice is given under Paragraph 6.8.3, but an action is initiated
prior to exhaustion of these procedures, such action shall be stayed, upon application
by either party to a court of proper jurisdiction, until the procedures in
Paragraphs 6.8.3 and 6.8.4 have been complied with.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 9
6.8.3 Notice of Dispute
6.8.3.1 For disputes arising prior to the making of final payment promptly after the
occurrence of any incident, action, or failure to act upon which a claim is based,
the party seeking relief shall serve the other party with a written Notice.
6.8.3.2 For disputes arising within one year after the making of final payment, CITY OF
FAYETTEVILLE shall give ENGINEER written Notice at the address listed in
Paragraph 6.14 within thirty (30) days after occurrence of any incident, accident, or
first observance of defect or damage. In both instances, the Notice shall specify
the nature and amount of relief sought, the reason relief should be granted, and
the appropriate portions of this Agreement that authorize the relief requested.
6.8.4 Negotiation: Within seven days of receipt of the Notice, the Project Managers for CITY
OF FAYETTEVILLE and ENGINEER shall confer in an effort to resolve the dispute. If the
dispute cannot be resolved at that level, then, upon written request of either side, the
matter shall be referred to the President of ENGINEER and the Mayor of CITY OF
FAYETTEVILLE or his designee. These officers shall meet at the Project Site or such
other location as is agreed upon within 30 days of the written request to resolve the
dispute.
6.9 CITY OF FAYETTEVILLE represents that it has sufficient funds or the means of obtaining
funds to remit payment to ENGINEER for services rendered by ENGINEER.
6.10 Publications
6.10.1 Recognizing the importance of professional development on the part of ENGINEER’s
employees and the importance of ENGINEER’s public relations, ENGINEER may prepare
publications, such as technical papers, articles for periodicals, and press releases,
pertaining to ENGINEER’s services for the Project. Such publications will be provided
to CITY OF FAYETTEVILLE in draft form for CITY OF FAYETTEVILLE’s advance review.
CITY OF FAYETTEVILLE shall review such drafts promptly and provide CITY OF
FAYETTEVILLE’s comments to ENGINEER CITY OF FAYETTEVILLE may require deletion
of proprietary data or confidential information from such publications, but otherwise
CITY OF FAYETTEVILLE will not unreasonably withhold approval. The cost of
ENGINEER’s activities pertaining to any such publication shall be for ENGINEER’s
account.
6.11 Indemnification
6.11.1 CITY OF FAYETTEVILLE agrees that it will require all construction Contractors to
indemnify, defend, and hold harmless CITY OF FAYETTEVILLE and ENGINEER from and
against any and all loss where loss is caused or incurred or alleged to be caused or
incurred in whole or in part as a result of the negligence or other actionable fault of
the Contractors, or their employees, agents, Subcontractors, and Suppliers.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 10
6.12 Ownership of Documents
6.12.1 All documents provided by CITY OF FAYETTEVILLE including original drawings, CAD
drawings, estimates, field notes, and project data are and remain the property of CITY
OF FAYETTEVILLE. ENGINEER may retain reproduced copies of drawings and copies of
other documents.
6.12.2 Engineering documents, computer models, drawings, specifications and other hard
copy or electronic media prepared by ENGINEER as part of the Services shall become
the property of CITY OF FAYETTEVILLE when ENGINEER has been compensated for all
Services rendered, provided, however, that ENGINEER shall have the unrestricted right
to their use. ENGINEER shall, however, retain its rights in its standard drawings details,
specifications, databases, computer software, and other proprietary property. Rights
to intellectual property developed, utilized, or modified in the performance of the
Services shall remain the property of ENGINEER.
6.12.3 Any files delivered in electronic medium may not work on systems and software
different than those with which they were originally produced. ENGINEER makes no
warranty as to the compatibility of these files with any other system or software.
Because of the potential degradation of electronic medium over time, in the event of
a conflict between the sealed original drawings/hard copies and the electronic files,
the sealed drawings/hard copies will govern.
6.13 Notices
6.13.1 Any Notice required under this Agreement will be in writing, addressed to the
appropriate party at the following addresses:
CITY OF FAYETTEVILLE’s address:
2435 Industrial Dr
Fayetteville, Arkansas 72701
ENGINEER’s address:
14755 Preston Rd
Dallas, TX 75254
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 11
6.14 Successor and Assigns
6.14.1 CITY OF FAYETTEVILLE and ENGINEER each binds himself and his successors, executors,
administrators, and assigns to the other party of this Agreement and to the successors,
executors, administrators, and assigns of such other party, in respect to all covenants
of this Agreement; except as above, neither CITY OF FAYETTEVILLE nor ENGINEER shall
assign, sublet, or transfer his interest in the Agreement without the written consent of
the other.
6.15 Controlling Law
6.15.1 This Agreement shall be subject to, interpreted and enforced according to the laws of
the State of Arkansas without regard to any conflicts of law provisions.
6.16 Entire Agreement
6.16.1 This Agreement represents the entire Agreement between ENGINEER and CITY OF
FAYETTEVILLE relative to the Scope of Services herein. Since terms contained in
purchase orders do not generally apply to professional services, in the event CITY OF
FAYETTEVILLE issues to ENGINEER a purchase order, no preprinted terms thereon shall
become a part of this Agreement. Said purchase order document, whether or not
signed by ENGINEER, shall be considered as a document for CITY OF FAYETTEVILLE’s
internal management of its operations.
SPECIAL CONDITIONS
7.1 Additional Responsibilities of ENGINEER
7.1.1 CITY OF FAYETTEVILLE’s review, approval, or acceptance of design drawings,
specifications, reports and other services furnished hereunder shall not in any way
relieve ENGINEER of responsibility for the technical adequacy of the work. Neither
CITY OF FAYETTEVILLE’s review, approval or acceptance of, nor payment for any of the
services shall be construed as a waiver of any rights under this Agreement or of any
cause of action arising out of the performance of this Agreement.
7.1.2 ENGINEER shall be and shall remain liable, in accordance with applicable law, for all
damages to CITY OF FAYETTEVILLE caused by ENGINEER’s negligent performance of
any of the services furnished under this Agreement except for errors, omissions or
other deficiencies to the extent attributable to CITY OF FAYETTEVILLE or CITY OF
FAYETTEVILLE-furnished data.
7.1.3 ENGINEER’s obligations under this clause are in addition to ENGINEER’s other express
or implied assurances under this Agreement or State law and in no way diminish any
other rights that CITY OF FAYETTEVILLE may have against ENGINEER for faulty
materials, equipment, or work.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 12
7.2 Remedies
7.2.1 Except as may be otherwise provided in this Agreement, all claims, counter-claims,
disputes and other matters in question between CITY OF FAYETTEVILLE and ENGINEER
arising out of or relating to this Agreement or the breach thereof will be decided in a
court of competent jurisdiction within Arkansas.
7.3 Audit: Access to Records
7.3.1 ENGINEER shall maintain books, records, documents and other evidence directly
pertinent to performance on work under this Agreement in accordance with generally
accepted accounting principles and practices consistently applied in effect on the date
of execution of this Agreement. ENGINEER shall also maintain the financial information
and data used by ENGINEER in the preparation of support of the cost submission
required for any negotiated agreement or change order and send to CITY OF
FAYETTEVILLE a copy of the cost summary submitted. CITY OF FAYETTEVILLE, the State
or any of their authorized representatives shall have access to all such books, records,
documents and other evidence for the purpose of inspection, audit and copying during
normal business hours. ENGINEER will provide proper facilities for such access and
inspection.
7.3.2 Records under Paragraph 7.3.1 above, shall be maintained and made available during
performance on assisted work under this Agreement and until three years from the
date of final payment for the project. In addition, those records which relate to any
controversy arising out of such performance, or to costs or items to which an audit
exception has been taken, shall be maintained and made available until three years
after the date of resolution of such appeal, litigation, claim or exception.
7.3.3 This right of access clause (with respect to financial records) applies to:
7.3.3.1 Negotiated prime agreements:
7.3.3.2 Negotiated change orders or agreement amendments in excess of $10,000
affecting the price of any formally advertised, competitively awarded, fixed price
agreement:
7.3.3.3 Agreements or purchase orders under any agreement other than a formally
advertised, competitively awarded, fixed price agreement. However, this right of
access does not apply to a prime agreement, lower tier subagreement or purchase
order awarded after effective price competition, except:
7.3.3.3.1 With respect to record pertaining directly to subagreement performance,
excluding any financial records of ENGINEER;
7.3.3.3.2 If there is any indication that fraud, gross abuse or corrupt practices may be
involved;
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 13
7.3.3.3.3 If the subagreement is terminated for default or for convenience.
7.4 Covenant Against Contingent Fees
7.4.1 ENGINEER warrants that no person or selling agency has been employed or retained
to solicit or secure this Agreement upon an agreement of understanding for a
commission, percentage, brokerage or continent fee, excepting bona fide employees
or bona fide established commercial or selling agencies maintained by ENGINEER for
the purpose of securing business. For breach or violation of this warranty, CITY OF
FAYETTEVILLE shall have the right to annul this Agreement without liability or at its
discretion, to deduct from the contract price or consideration, or otherwise recover,
the full amount of such commission, percentage, brokerage, or contingent fee.
7.5 Gratuities
7.5.1 If CITY OF FAYETTEVILLE finds after a notice and hearing that ENGINEER or any of
ENGINEER’s agents or representatives, offered or gave gratuities (in the form of
entertainment, gifts or otherwise) to any official, employee or agent of CITY OF
FAYETTEVILLE, in an attempt to secure an agreement or favorable treatment in
awarding, amending or making any determinations related to the performance of this
Agreement, CITY OF FAYETTEVILLE may, by written notice to ENGINEER terminate this
Agreement. CITY OF FAYETTEVILLE may also pursue other rights and remedies that the
law or this Agreement provides. However, the existence of the facts on which CITY OF
FAYETTEVILLE bases such finding shall be in issue and may be reviewed in proceedings
under the Remedies clause of this Agreement.
7.5.2 In the event this Agreement is terminated as provided in Paragraph 7.5.1, CITY OF
FAYETTEVILLE may pursue the same remedies against ENGINEER as it could pursue in
the event of a breach of the Agreement by ENGINEER As a penalty, in addition to any
other damages to which it may be entitled by law, CITY OF FAYETTEVILLE may pursue
exemplary damages in an amount (as determined by CITY OF FAYETTEVILLE) which
shall be not less than three nor more than ten times the costs ENGINEER incurs in
providing any such gratuities to any such officer or employee.
7.6 Arkansas Freedom of Information Act
7.6.1 City contracts and documents, including internal documents and documents of
subcontractors and sub-consultants, prepared while performing City contractual work
are subject to the Arkansas Freedom of Information Act (FOIA). If a Freedom of
Information Act request is presented to the CITY OF FAYETTEVILLE, ENGINEER will do
everything possible to provide the documents in a prompt and timely manner as
prescribed in the Arkansas Freedom of Information Act (A.C.A. §25-19-101 et seq.).
Only legally authorized photocopying costs pursuant to the FOIA may be assessed for
this compliance.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 14
IN WITNESS WHEREOF, CITY OF FAYETTEVILLE, ARKANSAS by and through its Mayor, and
ENGINEER, by its authorized officer have made and executed this Agreement as of the day and
year first above written.
CITY OF FAYETTEVILLE, ARKANSAS ENGINEER
By : By:
Molly Rawn, Mayor Daniel Jackson, Sr.Vice President
ATTEST:
By: Title:
City Clerk
END OF AGREEMENT FOR PROFESSIONAL ENGINEERING SERVICES
Sr.Vice President
Treasurer, Kara Paxton
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 15
EXHIBIT A
SCOPE OF SERVICES
The complete scope of this project includes citywide flow monitoring, systemwide hydraulic model
update, wet- and dry-weather flow calibration, existing system analysis, future growth augmentation
and analysis, and development of the associated sections of the Wastewater Collection System
(WWCS) Master Plan report. The flow monitoring program consists of 54 flow meters and 10 rain
gauges for a 60-day period, with the option to extend the flow monitoring period by 30-days. The
services are further described in the following sections:
I.Project Administration and Management
A.Project Administration
1.Prepare a schedule of work activities to be maintained throughout the project with
monthly milestone status reports and projections provided to the City.
2.Tailor the standard operating procedures to accommodate project requirements and
establish internal project controls to ensure schedule, budget, and quality control
procedures are being maintained.
3.Organize and attend a project kickoff meeting with the City and other stakeholders
to discuss project goals, communications, schedule, billing protocols, and other
pertinent information.
4.Coordinate and attend up to four in-person meetings with the City to discuss project
milestones, relay critical findings, summarize effort completed and get feedback from
the City on the direction of the project.
5.Coordinate monthly virtual progress meetings with the City to provide project
progress reports.
II.Temporary Flow and Rainfall Monitoring
Flow monitoring is the foundation of a successful wastewater collection system master plan. Accurate
and comprehensive flow data provides the baseline understanding of how the system performs under
both dry- and wet-weather conditions. This information is critical for calibrating the hydraulic model,
quantifying inflow and infiltration (I/I), identifying capacity constraints, and developing cost-effective
capital improvement plans.
A.Site Selection & Investigation
1.Meter and Rain Gauge Locations: Enclosed is Exhibit B outlining the proposed flow
monitoring locations. A total of 54 flow monitors and 10 rain gauges will be installed
and maintained for a concurrent 60-days during the spring of 2026.
2.Site Selection Work Session: RJN will conduct a work session with the City to discuss
the targeted monitoring locations and the intended purpose for each monitoring
location, and to determine if any support from the City is needed to install and
maintain equipment at the proposed locations. The plan will be presented on an
overview map and approved by the City prior to investigating and installing the flow
monitors.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 16
3.Site Investigations: Upon approval of the targeted monitoring locations, RJN will
perform site investigations for the purpose of determining the viability of each
targeted location. The investigation includes an evaluation of the hydraulic
conditions, access, safety, and other issues that may affect the data quality or sensor
survival. If a location is identified as unsuitable, RJN will investigate up to two (2)
alternate sites (upstream or downstream) for consideration. RJN will prepare and
submit for approval an electronic Site Investigation Report. The Site Investigation
Report will include a general site location map, a sketch of the installation, and
physical characteristics including pipe diameter, pipe material, manhole depth, and
other attribute information.
B.Equipment Installation
1.Gravity Flow Monitors: Based on the results of site investigations, RJN will select
equipment suited for the site to provide accurate and reliable flow data. RJN will use
flow monitors designed to measure flow in sanitary sewer pipes under free-flow and
surcharged conditions. The primary depth sensor will be ultrasonic with a resolution
to the nearest 0.01 feet. Each site will also include a level measurement redundancy
by means of a pressure and ultrasonic sensor. The primary velocity sensor will use
Doppler technology.
2.Rain Gauges: The rain gauge equipment will consist of a data logger and rain gauge
tipping bucket. The equipment will be able to measure resolution to 0.01 inches. The
tipping bucket will be a corrosion-resistant funnel collector with a tipping bucket
assembly. RJN will coordinate with the City to resolve any issues related to gaining
access to buildings for placement of gauges.
3.Wireless Telemetry: Remote terminal units will be provided by RJN at each flow
monitoring and rain gauge location to remotely collect the data. If certain sites are
not conducive to remote telemetry, RJN will manually collect the data throughout the
monitoring period.
4.Flow Monitor Installation: The sensors will be securely attached to the pipe by means
of metal bands or anchoring hardware designed specifically for that purpose. A
typical installation includes a primary ultrasonic depth sensor mounted at the crown
of the pipe, a redundant pressure transducer depth sensor mounted in the invert, and
a Doppler velocity sensor mounted near the invert. The data logger and sensor cables
will be firmly secured to the manhole walls or steps.
5.Data Recording Interval: All flow monitors and rain gauges will be synchronized in
time to the same clock and will be programmed to collect depth and velocity data at
five-minute intervals.
6.Initial Depth and Velocity Confirmations: Upon installation and activation of each flow
meter, RJN will take manual depth and velocity readings using independent
instrumentation to confirm that the in-situ monitor yields data representative of
actual field conditions. Field crews will also take manual velocity readings of the flow
cross-section (i.e., velocity profile) to derive an average velocity. All measurements,
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 17
adjustments, and efforts undertaken during site visits will be recorded on the
maintenance log.
C.Flow Monitoring and Rain Gauge Maintenance
1.Flow and Rainfall Monitoring Period: Flow and rainfall monitoring will be conducted
for a period of 60 days. It is assumed that adequate weather conditions will be
observed during the monitoring period to obtain representative dry-weather
information and at least four (4) rain events of varying depth, duration, and
intensities greater than 0.25 inches for use in understanding both dry- and wet-
weather flows in the system.
2.Data Review: RJN will review the flow and rainfall monitoring data at least twice a
week. Trained data analysts, experienced in processing and analyzing flow and rainfall
data, will use various analytical tools, such as hydrographs, scatter graphs, and flow
balancing methods, to verify the accuracy and precision of the flow data. The analysis
of the data includes data gaps and identifying anomalies and performance issues.
Any equipment service needs will immediately be conveyed to the field services
crews. The data will be processed and edited in accordance with the field
confirmations to produce final data sets for each site. All data processing efforts will
ensure that the raw data is preserved.
3.Equipment Operation and Maintenance: RJN’s qualified field crews will visit each
monitor and rain gauge installation when issues with the flow monitoring data have
been identified, to perform necessary maintenance of the equipment. Maintenance
will also be carried out every two weeks and includes calibration of the recording
equipment, downloading of recorded data, onsite analysis of the data to ensure
proper meter function, cleaning of the sensor, and replacing any defective
equipment.
4.Uptime: An uptime of 90 percent for all temporary monitors will be maintained. This
will include dry- and wet-weather periods. If the uptime is not met by RJN, the
monitoring will be extended to capture the meter days missed at no additional cost
to the City. The guaranteed uptime applies to mechanical malfunctions and does not
apply to actions beyond RJN’s control, such as vandalism, excessive debris, etc.
D.Flow Monitoring and Rain Gauge Removal
1.Notification: RJN will remove all the temporary flow monitors and rain gauges at the
completion of the 60-day monitoring period if adequate weather conditions have
been observed. RJN will advise the City if adequate weather conditions have not been
observed during the initial 60-day monitoring period to allow the City to consider
funding an extended flow monitoring period, in advance of removing the temporary
equipment. If the flow monitoring period is extended, then the project schedule will
be extended for 30-days under the Special Services task.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 18
III. Model Review & Update
RJN will perform a comprehensive review and update of the existing wastewater hydraulic model to
ensure that it accurately represents current system conditions and recent growth within the City’s
service area. The model update will incorporate the latest available GIS data, as-built records, and
water billing data to refine the model network and loading conditions.
A. Data Collection & Review
1. Obtain and review the most recent City GIS database, including gravity mains, force
mains, manholes, lift stations, and basins.
2. Review as-built drawings and record plans for projects completed over the last year
(model network was last updated in January 2025) to identify new infrastructure,
modifications, or abandonments.
3. Collect the latest pump curves and operation controls for all City-owned lift stations.
4. Collect and review any available lift station SCADA data and drawdown test data to
improve the accuracy of performance for aging pumps that may not be operating on
the original manufacturer's pump curve.
5. Collect and review monthly water billing data per customer from the most recent 12-
month period to verify and update base sanitary flow allocations for non-residential
customers in the model. The City will provide water billing records in a geo-coded
format compatible with integration into the model.
6. Collect 2-foot contour and LiDAR data from the City for use in updating the ground
model in the hydraulic model.
7. Coordinate with City staff to identify known system changes, planned developments,
and pending capital improvement projects not yet reflected in GIS or record
drawings.
8. RJN will analyze the model to identify critical assumptions that may require field
verification to improve model accuracy. A list of recommended field verifications will
be provided for City staff to collect. The City will provide RJN with all requested field
data within 60 days of the request and no later than 30 days before the end of the
flow monitoring period. This timeline ensures adequate time to incorporate updates
into the model before calibration begins. Any delays in receiving the requested data
will result in an equivalent delay to the overall project schedule.
9. RJN will create a technical memorandum summarizing the gaps in data for model
network attributes (gravity main inverts, lift station operating levels, wet-well
dimensions, etc.), differentiating between assumed data, City-provided data, survey
data, and as-built data.
B. Model Network Updates
1. Reconcile discrepancies between the GIS and the existing model network, ensuring
connectivity, alignment, and attribute accuracy (i.e., pipe diameter, material, invert
elevations, flow directions).
2. Update network attributes and geometry based on the City GIS, as-built records, and
field information provided by the City.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 19
3. Review and update lift station pump curves and operations, as required, to match the
latest data provided by the City.
4. Incorporate new developments and system extensions identified through GIS
updates, as-built plans, and information provided by the City.
5. Remove decommissioned assets or redundant elements that no longer exist in the
current system configuration.
6. Hold discussions with the City early in the model update process to ensure that sub-
centimeter GPS survey is undertaken at all known overflow points in the network.
7. Incorporate any new City lift stations into the model based upon record drawing and
manufacturer’s pump curves provided by the City as well as pump operation levels
(on/off levels).
C. Population & Water Usage Updates
1. Update population based on growth that was observed within the last year (last
model population update was in January 2025), identified through conversations with
the City, and other GIS and as-built records provided by the City.
2. Use the geo-refenced water billing accounts to tie directly into the model parcels/sub
catchments and identify residential and non-residential customers.
3. Update non-residential sewer contributions using the most recent water billing data
(past 12 months) to update customer demands, identify new or modified service
areas, and redistribute flow loads to appropriate model nodes.
D. Quality Assurance and Documentation
1. Perform quality control checks to confirm hydraulic network integrity and ensure the
updated model is free of topology errors.
2. Develop and maintain a detailed change log summarizing all network and demand
updates.
3. RJN will create a technical memorandum summarizing data gaps based on data
sources.
IV. Model Calibration & Validation
Model calibration is the process of adjusting hydraulic model parameters to ensure that simulated
flow, depth, and velocity results closely match observed field data. Calibration is performed for both
dry weather and wet weather conditions at all 54 metering locations to accurately represent the
system’s performance under varying flow regimes.
A. Dry-Weather Flow Calibration
1. Select the most suitable dry-weather period from the collected flow data.
2. Use residential and non-residential dry-weather flow profiles as a base set; develop
additional dimensionless dry-weather flow profiles as required.
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3. Iteratively modify per capital flow rates, dimensionless profiles, and permanent
groundwater infiltration to calibrate the model to dry-weather weekday and weekend
conditions.
4. Complete the dry-weather flow calibration by complying to industry standards of
matching the diurnal pattern, flow rates, depth, and velocity as best as possible.
B. Wet-Weather Flow Calibration
1. Source and use historic rainfall and evaporation data to input into the Ground
Infiltration Model (GIM) in InfoWorks, ICM, together with the detailed rainfall data
collected from the temporary gauges deployed during the flow monitoring survey to
properly initialize the model.
2. Iteratively adjust both the fixed surface runoff parameters and GIM parameters in the
model until the model reasonably matches the depth, velocity, and flow recorded by
the flow monitors. SCADA data from lift stations may also be used as an additional
validation source during this process, where the model data cannot be adjusted
within acceptable parameters to match monitored conditions, field investigations
may be performed to evaluate actual system performance.
3. Complete the calibration by complying with industry standards of matching the
overall wet-weather response patterns, flow rates, depth, and velocity per observed
storm event as best as possible.
C. Existing System Performance Validation
1. Collect georeferenced historical SSO data from the City for the past 5 years.
2. RJN will conduct one meeting with the City to review historical SSO locations and the
SSO locations predicted by the existing calibrated model.
3. Use the calibrated model to run the City’s 5-year, 24-hour design storm and a 2-year
design storm with a duration to be agreed upon with the City and compare model-
predicted SSOs against historical SSOs.
4. Review model performance with the City and make operational and other
adjustments to the model as necessary.
V. Inflow/Infiltration (I/I) Analysis
RJN will perform a comprehensive I/I analysis to quantify inflow and infiltration contributions
throughout the wastewater collection system and identify basins with the highest rates of infiltration
and volume of inflow. The results will provide the City with clear information to prioritize future
investigations or targeted improvements.
A. Engineering Analysis
1. Perform dry-weather, permanent groundwater infiltration (GWI), rainfall-derived
inflow and infiltration (RDII) analyses to quantify I/I for each basin.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 21
2. Using the results of the permanent groundwater infiltration (GWI) analysis, RJN will
evaluate whether basins with specific pipe materials exhibit higher infiltration rates.
Normalized GWI rates (per linear foot of pipe) will be calculated for each material
type (i.e., PVC, ductile iron, concrete) to identify any correlations between pipe
material and infiltration.
3. Calculate RDII rates on a normalized basis (e.g., per 1,000 linear feet of pipe) for peak
flow and total event volume.
4. Identify and prioritize basins contributing the most I/I based on normalized event
peak flows and total volumetric responses.
B. Deliverables
1. Prepare a Technical Memorandum summarizing methods, results of I/I analysis, and
ranking of basins. The results from the I/I analysis will be used when setting the CIP
optimization design criteria and strategies.
2. Deliver digital copies of the Technical Memorandum, including tabular summaries,
hydrographs, scattergraphs, and final flow data in Microsoft Excel format.
VI. Future Growth Augmentation
RJN will update and expand the calibrated hydraulic model to simulate future system performance
under projected population and flow growth conditions for the years 2030, 2040, and 2050. Flow
triggers for each planning horizon will also be developed to assist in timing the design and planning
efforts for CIP projects. The future growth augmentation will integrate the City’s latest planning and
development data to reflect anticipated changes in land use, population distribution, and wastewater
generation across the service area.
A. Data Collection and Coordination
1. Obtain and review the City’s most recent comprehensive plan, land use maps, zoning
data, and population projections to define growth areas and development densities.
2. Coordinate with City planning and engineering staff to identify known or approved
developments, potential annexation areas, and anticipated changes in service
boundaries.
3. Review regional planning documents or available census-based projections to ensure
consistency with local growth assumptions.
B. Future Flow Projections
1. Develop future wastewater flow projections for each planning horizon (2030, 2040,
and 2050) based on projected population growth, land use changes, and per capita
flow assumptions.
2. Develop flow triggers for each planning horizon, which will be evaluated to assist in
timing the design and planning efforts for the related, recommended CIP projects.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 22
3. Incorporate growth-related increases in infiltration and inflow (I/I) where applicable,
particularly in newly developed or expanding service areas.
C. Model Augmentation & Scenario Simulation
1. Integrate projected growth areas and associated loading into the calibrated model.
2. Simulate system performance under the 2030, 2040, and 2050 planning horizons
using the City’s 5-year, 24-hour design storm.
3. Compare bottlenecks in the system against existing conditions to identify capacity
constraints caused solely by the projected growth.
VII. Wastewater Collection System Master Plan Report
A. Master Plan Report, Phase 1
1. Prepare a Draft Report for Phase 1 of the 2026 Wastewater Collection System Master
Plan that includes a discussion of the following sections:
Executive Summary, Background, and System Overview
Flow and Rainfall Monitoring and I/I Analysis
Hydraulic Model Update
Model Calibration and Validation
Future Growth Augmentation
2. Submit individual digital copies of each section of the Draft Report as they are
completed to the City for their review and comments.
3. Meet with the City to review comments on the Draft report.
4. Incorporate comments from the City and submit a Final version of each report
section.
VIII. Special Services
The Special Services task will not be initiated unless additional rainfall events are needed outside of
the original 60-day flow monitoring period and is approved by the City. The special services include
extending the flow and rainfall monitoring period by 30-days with the intent of capturing large
rainfall events to be used to recalibrate the hydraulic model. The Special Services will be presented as
an amendment to this project.
A. 30-Day Flow Monitoring Extension
1. If insufficient rainfall events (either number of events or size of events) occurred
during the original 60-day flow monitoring period, RJN will notify the City and upon
authorization, the monitoring period for the temporary flow meters and rain gauges
will be extended for a period of 30-days.
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 23
Items Requested from Fayetteville Utilities
1. Lift station, force main, and gravity main record drawings
2. Lift station pump IDs, pump curves, and operating levels
3. Lift station supervisory control and data acquisition (SCADA) data, where available
4. Lift station drawdown test data, where available
5. Electronic water customer billing data with an associated geolocation (address, X,Y
coordinates, etc.)
6. Georeferenced historical sanitary sewer overflow (SSO) locations
7. Future growth and planning data
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 24
EXHIBIT B
PROJECT MAP
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 25
EXHIBIT C
PRICING
Pricing for this AGREEMENT, is as follows:
Pricing Terms for Invoicing: Unit Billing and Lump Sum (LS)
Not-To-Exceed Total Cost: $843,610.00
Service Quantity Unit Unit Cost Total Cost
PHASE 1
Project Administration 1 LS $126,097.00 $126,090.00
Meter Investigations 54 EA $350.00 $18,900.00
Meter Installation 54 EA $650.00 $35,100.00
Rain Gauge Investigation & Installation 10 EA $400.00 $4,000.00
Meter Removal 54 EA $530.00 $28,620.00
Meter Maintenance 3,240 MD $80.00 $259,200.00
Rain Gauge Maintenance 600 MD $12.00 $7,200.00
Flow Monitoring Data Management 1 LS $54,050.00 $54,050.00
Model Review and Update 1 LS $52,510.00 $52,510.00
Model Calibration and Validation 1 LS $137,470.00 $137,470.00
Inflow and Infiltration Analysis 1 LS $18,250.00 $18,250.00
Future Growth Augmentation 1 LS $47,860.00 $47,860.00
Phase 1 WWCSMP Report 1 LS $54,360.00 $54,360.00
Total $843,610.00
Special Services (Optional) 1 LS $160,380.00 $160,380.00
City of Fayetteville – 2026 WWCS Master Plan, Phase 1 | Page 26
EXHIBIT D
PROJECT SCHEDULE