HomeMy WebLinkAbout2026-04-20 I01E_03 Professional Consulting Services Agreement_Water Distribution System ModelingAGENDA ITEM:
CITY OF WAUKEE, IOWA
CITY COUNCIL MEETING COMMUNICATION
MEETING DATE: April 20, 2026
AGENDA ITEM:Consideration of approval of a resolution approving Agreement for
Professional Consulting Services with HDR Engineering, Inc.
[Drinking Water Distribution System, Master Services Agreement]
FORMAT:Resolution
SYNOPSIS INCLUDING PRO & CON: The City of Waukee is seeking to update and enhance its
water distribution system hydraulic model to provide a reliable tool for evaluating system performance
and supporting future planning efforts. The existing model will be reviewed, updated, and validated
using the most current system data, GIS information, and available field observations. The updated
model will provide the City with an improved understanding of system pressures, headloss, and
velocities across the distribution system and help identify areas of operational concern.
In addition to developing the updated base model, the hydraulic model will be used to evaluate future
operational scenarios associated with planned improvements to the CIWW West Water Treatment
Plant and projected system demands. These scenario analyses will support the City’s planning efforts
by assessing system performance under future growth conditions and proposed infrastructure
improvements.
The final model will serve as a long-term planning and operational tool that can be used by the City to
evaluate future development impacts, assess potential infrastructure improvements, and support
ongoing system management.
FISCAL IMPACT INCLUDING COST/BENEFIT ANALYSIS: The City agrees to pay the
Consultant the following sum NOT-TO-EXCEED $116,270.00 including any authorized reimbursable
expenses, pursuant to the Schedule of Fees set forth in Attachment 3.
COMMISSION/BOARD/COMMITTEE COMMENT:
STAFF REVIEW AND COMMENT:
RECOMMENDATION: Approve the resolution.
ATTACHMENTS: I. Resolution
II. Agreement for Professional Consulting Services
PREPARED BY: Lisa Bauman
REVIEWED BY: Rudy Koester RK
I1E3
THE CITY OF WAUKEE, IOWA
RESOLUTION 2026 -
APPROVING AGREEMENT FOR PROFESSIONAL CONSULTING SERVICES WITH
HDR ENGINEERING, INC. [DRINKING WATER DISTRUBUTION SYSTEM,
MASTER SERVICES AGREEMENT]
IN THE NAME AND BY THE AUTHORITY OF THE CITY OF WAUKEE, IOWA
WHEREAS, the City of Waukee, Dallas County, State of Iowa, is a duly organized Municipal
Organization; AND,
WHEREAS, the City desires to retain the consultant services of HDR Engineering, Inc.,
for Drinking Water Distribution System Modeling; AND,
WHEREAS, the scope of services includes updating and enhancing the Cities water distribution
system hydraulic model to provide a reliable tool for evaluating system performance and
supporting future planning efforts. The existing model will be reviewed, updated, and validated
using the most current system data, GIS information, and available field observations. The
updated model will provide the City with an improved understanding of system pressures,
headloss, and velocities across the distribution system and help identify areas of operational
concern AND,
NOW THEREFORE BE IT RESOLVED by the City Council of the City of Waukee that the
Agreement for Professional Consulting Services between HDR Engineering, Inc. and the City of
Waukee, Iowa [Drinking Water Distribution System, Master Services Agreement] is hereby
approved.
Passed by the City Council of the City of Waukee, Iowa, and approved the 20th day of April,
2026.
____________________________
Courtney Clarke, Mayor
Attest:
___________________________________
Rebecca D. Schuett, City Clerk
RESULTS OF VOTE: AYE NAY ABSENT ABSTAIN
Kala Anderson
Chris Crone
Rob Grove
Lori Lyon
Anna Bergman Pierce
1
AGREEMENT FOR PROFESSIONAL CONSULTING SERVICES
Drinking Water Distribution System
Master Services Agreement
City Project No. _______
This Agreement is made and entered into this 20th day of April, 2026, by and between City of
Waukee, a municipal corporation, hereinafter referred to as "City," and HDR Engineering, Inc.,
(Fed. ID # 47-0680568), a Nebraska corporation incorporated and licensed under the laws of the
State of Iowa, party of the second part, hereinafter referred to as "Consultant" as follows:
THE CITY HEREBY AGREES TO RETAIN THE CONSULTANT FOR THE PROJECT AS
DESCRIBED IN THIS AGREEMENT AND CONSULTANT AGREES TO PERFORM THE
PROFESSIONAL SERVICES AND FURNISH THE NECESSARY DOCUMENTATION FOR
THE PROJECT AS GENERALLY DESCRIBED IN THIS AGREEMENT.
1.SCOPE OF SERVICES
Services provided under this Agreement shall be as further described in Attachment 1, Scope
of Services.
2.SCHEDULE
The schedule of the professional services to be performed shall conform to the Schedule set
forth in Attachment 2. Any deviations from the Schedule shall be approved by the authorized
City representative. The City agrees that the Consultant is not responsible for delays arising
from a change in the scope of services, a change in the scale of the Project or delays resulting
from causes not directly or indirectly related to the actions of the Consultant.
3.COMPENSATION
A.In consideration of the professional services provided herein, the City agrees to pay the
Consultant the following sum NOT-TO-EXCEED, including any authorized
reimbursable expenses, pursuant to the Schedule of Fees set forth in Attachment 3.
I. Basic Services of the Consultant
A. Base Model Update and Development $79,040
B. CIWW West Plant Operational Planning $27,230
C. On-Call Sub-Area Modeling (as needed) $ Hourly (initial allocation $10,000)
Total $116,270
B.The Consultant shall invoice the City monthly for services, any reimbursable expenses
and any approved amendments to this Agreement, based upon services actually
completed at the time of the invoice. Final payment shall be due and payable within 30
Waukee DS Modeling | Attachment A | Scope of Services
Attachment 1 Scope of Services
Project Overview:
The City of Waukee is seeking to update and enhance its water distribution system hydraulic
model to provide a reliable tool for evaluating system performance and supporting future
planning efforts. The existing model will be reviewed, updated, and validated using the most
current system data, GIS information, and available field observations. The updated model will
provide the City with an improved understanding of system pressures, headloss, and velocities
across the distribution system and help identify areas of operational concern.
In addition to developing the updated base model, the hydraulic model will be used to evaluate
future operational scenarios associated with planned improvements to the CIWW West Water
planning efforts by assessing system performance under future growth conditions and proposed
infrastructure improvements.
The final model will serve as a long-term planning and operational tool that can be used by the
City to evaluate future development impacts, assess potential infrastructure improvements, and
support ongoing system management.
Basic Service of the Consultant:
A. Base Model Update and Development
Task 100: Project Management
1. Objective:
Provide Project Management activities over the project duration including planning,
organizing, and monitoring Project team activities, preparing and monitoring deliverable
production standards, attending meetings, budget management, and liaison with the
City.
2. Consultant Activities:
a. Team Management and Project Control
i. Budget and invoice management.
ii. Resource scheduling, management, and allocation based on task order
schedules and activities.
iii. Project coordination.
iv. Prepare for and conduct weekly project status meetings with the City
Project Manager summarizing completed activities, next steps,
information needs, status update of active work, review of project
schedule, and action items for Consultant and City staff.
v. Monthly progress reports submitted to City with each invoice.
b. Project Management Plan
Waukee DS Modeling | Attachment A | Scope of Services
i. Develop guidance document (Project Management Plan) for Consultant
project team documenting project activities, constraints, guidelines,
budgets, and procedures.
c. Quality Control
i. Facilitate team meetings on a regular basis to facilitate communication
flow and task order development.
ii. Conduct a Project Approach & Resource Review with senior technical
leaders. At project initiation Consultant will conduct a project review to
discuss technical approach, team resources, status of schedule and
deliverables, and project management approach.
iii. Facilitate independent quality control reviews for project deliverables.
3. City Responsibilities
a. Participation in weekly project status meetings with Consultant Project Manager
and including additional City staff in these update meetings as needed.
b. Provide requested information related to the project to Consultant at agreed
upon due dates.
4. Assumptions
a. 6-month project duration (thru Task 400 complete).
b. Project status meetings will be conducted virtually.
c. The project will be managed to the roll-up project total amount, not to the sub-
task level.
5. Deliverables
a. Monthly invoices and progress reports.
b. Action items log for project status meetings.
Task 200: Existing Information Review
1. Objective:
The objective of this task is to obtain and review relevant existing information to
updated distribution system (DS) hydraulic model (Task 300).
2. Consultant Activities:
a. 210 Project Kick-off Meeting.
project. Define roles and responsibilities of City and Consultant. Review and
endorse the initial Project Schedule. Conduct initial City staff interviews on DS
performance to date.
b. 220 Obtain and review existing DS model.
c. 230 Review current City GIS.
d. 240 Obtain and review most current system data.
o Pump curves
o Tank data (base elevation, diameter, high water level, low water level).
o Pressure reducing valve settings.
o Operational controls.
o Closed valves.
o Pressure zone isolation valves.
3. City Responsibilities:
Waukee DS Modeling | Attachment A | Scope of Services
a. Provide access to the
b.
4. Assumptions:
a. Meetings/Workshops:
o Project Workshop No. 1 (Kick-off Meeting). In person meeting attended
by Consultant PM and lead modeler.
b. City is able to locate and provide RFI line items timely to support project
schedule.
5. Deliverables:
a. Request For Information.
b. Workshop agenda and summary.
Task 300: Distribution System Model Update
1. Objective:
D DS hydraulic model resulting in a valuable tool for informing
.
2. Consultant Activities:
a. 310 Model Selection/Verification.
o Project Workshop 2. Consultant will present the pros/cons/costs
associated with the two most feasible modeling approaches/software
(InfoWater or WaterGEMS). Document City decision/direction.
o The selected software will be leveraged for a seamless integration and
direct match to the existing City GIS database.
b. 320 Model Build/Update
o Develop the DS Model Update using WaterGEMS assumed. Includes
effort to convert from InfoWater to WaterGEMS.
o Consultant/City iteration calls during the development to address the
modeling needs identified in project workshop 2 and as encountered by
the modeling team during development.
o Consultant/City iterations on identified GIS update needs.
o Model will be built with careful attention to integrate existing GIS for
ease of future water model updates.
c. 330 Model Validation
o Upon completion of the initial DS model update Consultant will
complete validation of the model.
o The model will be calibrated to known field conditions (available data
points within the water distribution system) and further supported by
hydrant flushing data.
o Step 1 will be -validation, validating model input data
to available data points within the system. The boundary level validation
shall be considered complete when tank levels and pump station run
times are accurately represented. Pressures will be validated to match
the accuracy of the elevation data in the hydraulic model.
o Step 2 factor validation using fire flow test data. For C
factor validation, the model shall be considered validated when 90% of
the model results are within 10% of the field observed conditions for a
Waukee DS Modeling | Attachment A | Scope of Services
specific day of record.
d. 340 Model Review Workshop (Project Workshop 3)
o Once the consultant has completed validation of the updated DS model
it will be reviewed and discussed with the City. This project workshop
acknowledgement of the DS model update being substantially complete
and functioning appropriately for future use.
o Review and discuss preliminary pressure mapping, headloss mapping,
and velocity mapping.
e. 350 Model Deemed Final 220 Obtain and review existing DS model.
o Consultant to address comments/outcomes from project workshop 3
and deem the DS Model Update complete.
3. City Responsibilities:
a. City engagement in project Workshops No. 2 and 3.
4. Assumptions:
b. Meetings/Workshops:
o Project Workshop No. 2. In person meeting attended by Consultant PM
and lead modeler.
o Project Workshop No. 3. In person meeting attended by Consultant PM
and lead modeler.
c. City engagement in project Workshops No. 2 and 3.
d. DS Model Update utilizing WaterGems.
e. Basis of Validation:
o 2026 Minimum Day Demand 96-hour Extended Period Simulation (EPS)
o 2026 Average Day Demand 96-hour EPS
o 2026 Maximum Day Demand 96-hour EPS
f. The DS Model will be owned by the City and operated by Consultant.
g. If additional hydrant flushing deemed necessary, City will perform the
associated field work.
5. Deliverables:
a. Pressure mapping to identify areas of concern within the existing distribution
system that fall outside of the City s preferred level of service.
b. Headloss mapping to identify areas of concern in the distribution system that
may be choking flow or contributing to low pressures at extents of the system.
c. Velocity mapping to identify areas of concern that may be undersized and
contributing to greater than necessary wear on the distribution mains.
d. Workshop agenda and summary.
B. CIWW West Plant Operational Planning:
Task 400: Scenario Modeling.
1. Objective:
The objective of this task is to utilize the updated and maintained DS model to further
2. Consultant Activities:
Waukee DS Modeling | Attachment A | Scope of Services
a. 410 New West WTP scenario modeling.
a. 2030 MDD 96-hour EPS with Proposed CIWW Improvements
b. 2050 MDD 96-hour EPS with Proposed CIWW Improvements
b. 430 Developer proposal scenario modeling, as needed.
a. Test specific proposed development scenarios as needed where
development differs from previously planned demand distribution.
3. City Responsibilities:
a. Provide requested data required to model future scenarios.
b. Define alternative scenario(s) to be modeled where development differs from
previously planned demand distribution.
4. Assumptions:
a. 2 modeling workshops (remote/online).
b. Workshops for future model refinements (additional scenarios) as required
(remote/online).
5. Deliverables:
a. Summary memo and/or ppt slides documenting the respective scenario
analysis.
a. Analysis will include review of minimum pressures and head loss/unit
length under MDD conditions.
b. Draft hydraulic model
c. Final hydraulic model
d. Future hydraulic model refinements (additional scenarios) as required.
C. On-Call Sub-Area Modeling (as needed, requested)
Task 500: Model Maintenance
1. Objective:
The objective of this task would be to maintain the DS Model developed under Task 300
on an on-call basis ($/hour). Maintenance activity will be as agreed to with the City
prior to Consultant implementing.
2. Consultant Activities:
a. 510 Periodic updates to DS Model and GIS.
3. City Responsibilities:
a. TBD
4. Assumptions:
a. TBD
5. Deliverables:
a. TBD