HomeMy WebLinkAboutAECOM-12/15/2025Docusign Envelope ID: BED542CA-DF4A-48D8-86C9-1 B8ADDAC3F74
AECOM
AECOM 319-232-6531 tel
501 Sycamore Street 319-439-3089 fax
Suite 222
Waterloo, Iowa 50703
www.aecom.com
PLANNING AND ENGINEERING SERVICES
CITY OF WATERLOO, IOWA
SUPPLEMENTAL AGREEMENT NO. 8
WHEREAS, a Professional Services Agreement was entered into between the City of Waterloo,
Iowa (Client), and AECOM Technical Services, Inc. (ATS) of Waterloo, Iowa, dated September 8,
2015, for Planning and Engineering Services to assist Waste Management Services Department for
the City of Waterloo, Iowa; and
WHEREAS, the Client and ATS entered into Supplemental Agreement No. 1 on April 1, 2019, for
continuation of Planning and Engineering Services through the end of the current fiscal year; and
WHEREAS, the Client and ATS entered into Supplemental Agreement No. 2 on October 22, 2019,
for continuation of additional Planning and Engineering Services for the current fiscal year; and
WHEREAS, the Client and ATS entered into Supplemental Agreement No. 3 on December 7, 2020,
for continuation of additional Planning and Engineering Services for the current fiscal year; and
WHEREAS, the Client and ATS entered into Supplemental Agreement No. 4 on March 21, 2022, for
continuation of additional Planning and Engineering Services for the current fiscal year; and
WHEREAS, the Client and ATS entered into Supplemental Agreement No. 5 on June 5, 2023, for
continuation of additional Planning and Engineering Services for the current fiscal year; and
WHEREAS, the Client and ATS entered into Supplemental Agreement No. 6 on August 19, 2024 for
continuation of additional Planning and Engineering Services for the current fiscal year; and
WHEREAS, the Client and ATS entered into Supplemental Agreement No. 7 on April 21, 2025 for
continuation of additional Planning and Engineering Services for the current fiscal year; and
WHEREAS, the Client and ATS now desire to enter into Supplemental Agreement No. 8 for
continuation of additional Planning and Engineering Services for the current fiscal year.
Project Description
The project is to provide additional planning and engineering services to assist the Waste
Management Services Department and Engineering Department for wastewater collection
and treatment -related projects and tasks.
II. Scope of Services
The Scope of Services to be provided under this supplemental agreement is as follows:
The work to be performed by ATS will include work, materials, equipment and supplies
necessary to continue providing the services described in the tasks defined below similar to
previous years.
Task 1 - Evaluating Records and Associated Costs. Assist in evaluating existing records to
establish the current costs for various activities performed by the Waste Management
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Services Department as requested. The current wastewater services activities include the
sanitary sewer collection system maintenance and flood control. The breakdown of the
costs for these activities will include estimates for the cost for each of the above areas for
both residential/commercial flows and industrial flows. This information will be helpful in
evaluating proposed industrial expansions, economic development opportunities and rates.
Task 2 - Public Meetings. Provide liaison with the City Council regarding Waste
Management Services issues. This task will include attending Council meetings, committee
meetings and other public meetings to discuss issues relating to Waste Management
Services, when necessary.
Task 3 - Regulatory Assistance. Provide liaison with regulatory agencies associated with
Waste Management Services. The agencies currently involved in these services include
the Iowa Department of Natural Resources (IDNR), the Environmental Protection Agency
(EPA) and the U.S. Army Corps of Engineers (USACE).
Task 4 - Funding Application Assistance. Assist in pursuing funding opportunities with
various potential funding sources. This task will include reviewing potential grant and/or
loan opportunities and assist in preparing grant and/or loan applications which may benefit
the Client in Waste Management Services activities.
Task 5 - Capital Improvement Development. Assist in developing a Capital Improvements
Plan for Waste Management Services, including projects needed to meet regulatory
requirements, resolve existing problems, and maintain existing programs and services. The
Capital Improvements Plan will provide a means to estimate future costs which may be
used in evaluating bond schedules, funding opportunities and rates.
Task 6 - Sanitary Sewer System Planning Assistance. Develop a priority system for
implementing improvements in the Client's sanitary sewer collection system. The existing
system experiences significant flow increases during wet weather conditions. The need to
reduce the flows has been a long-standing need, and the Client has taken significant steps
in reducing these extraneous flows in the past. Significant improvements remain to reduce
wet weather flows to stay within the system capacity. Sanitary sewer improvements are
needed in the public right-of-way and on the private property side to reach the goal of
eliminating sanitary sewer overflows and sewer back-ups. This task will assist in prioritizing
the sanitary sewer improvements and continuing with the long-range plan to implement the
needed improvements. In addition, this task will assist the Client in continuing with the
program and policy to address private source infiltration and inflow sources for future and
existing portions of the sanitary sewer system.
Task 7 - Assist Department/City with Funding Priorities. Coordinate closely with the other
City departments (engineering, finance and planning) in developing the Client's Waste
Management Services Capital Improvements Plan, priorities and funding issues.
Task 8 - Assist with CMOM Activities. Assist the Client's WPCF staff updating and
implementing the Capacity, Management, Operation and Maintenance (CMOM) Program
for the wastewater treatment and collection system(s).
Task 9 - Assist with Inflow and Infiltration Evaluations. Assist the Client in monitoring the
ordinance to eliminate extraneous flows from the sanitary sewer system, including footing
drains and sump pump connections.
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Task 10 - Evaluating Options for Wastewater Treatment and Collection System. Assist the
Client in evaluating options for operating the Client's wastewater treatment and collection
system(s).
Task 11 - Engineering Tasks. Assist the Client in small miscellaneous engineering tasks as
requested.
Task 12 — Update Existing Hydraulic Model in Coordination the City's Infrastructure
Improvements that have occurred since 2015. The City's existing sanitary sewer hydraulic
computer model was created in 2015 and 2016. Since that time, there have been a number
of sanitary sewer infrastructure improvements that have been completed within the City.
This task would be to coordinate with the City on infrastructure improvements that have
occurred since then and add those to the model. Once added, field validation of the
modeling results would need to occur. AECOM will work with the City reviewing their
existing flow metering information and flow data results as part of this validation. Based on
validation information, it will be determined if recalibration is necessary within the system.
The original model is based on XPSWMM software from 2014 as was required by USEPA
and Iowa DNR. This version of the XPSWMM software is no longer supported by the
software vendor. AECOM updated the model to the 2020 version of the XPSWWM
software. A future software upgrade will be needed to verify data for the model stays intact
and accessible.
Task 13 — Miscellaneous Hydraulic Modeling. Perform hydraulic modeling analysis for the
sanitary sewer system on an as -needed basis, as requested by Client.
Task 14 - Diffuser Performance and Bathymetric Analysis. Provide engineering services,
as requested by the client, for wastewater diffuser performance and bathymetric analysis.
Task 15 - Update Sanitary Sewer Master Plan. Assist the Client to update the City's
Sanitary Sewer Master Plan with past progress and revised future project priorities.
III. Compensation
Compensation for the above services will be on an hourly basis in accordance with Part VI
of the original agreement and shall be integrated with the fees in the original agreement and
Supplemental Agreement Nos. 1, 2, 3, 4, 5, 6 and 7. The estimated fee is One Hundred
Fifty Thousand Dollars ($150,000.00).
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In all other respects, the obligations of the Client and ATS shall remain as specified in the
Professional Services Agreement dated September 8, 2015.
IN WITNESS WHEREOF, the parties hereto have executed this Supplemental Agreement No. 8 as
of the dates shown below:
AECOM TECHNICAL SERVICES, INC.
By edaz %�'� • g-///f-el&er
Michelle M. Sweeney, PE, PTOE
Associate Vice President
CITY OF WATERLOO, IOWA
By:
DocuSigned by:
nittAAlitA, fkotrt
Quentin Hart
Mayor
Date 11/05/2025
Date
12/15/2025
L:\Secure_DCS\Administration\AGREE\SUPPLE\SA8 Waterloo WM Planning and Engineering.doc