Award of 30- and 42-Inch Sanitary Sewer Force Main/Lift Station Rehabilitation Project Copyright 2014
City of Dubuque Consent Items # 12.
ITEM TITLE: Award of 30-and 42-Inch Sanitary Sewer Force Main and
Lift Station Assessment and Rehabilitation Project
SUMMARY: City Manager recommending authorization for the City to
enter into contract negotiations with Strand Associates to
perform engineering consulting services including, but not
limited to, survey inspection, emergency response planning
and assessment of the City's 30-and 42-inch sanitary
sewer force mains and Terminal Street and Cedar Street
Lift Stations.
SUGGESTED DISPOSITION: Suggested Disposition: Receive and File; Approve
ATTACHMENTS:
Description Type
RFP Award for 30" and 42" Force Main Project-MVM City Manager Memo
Memo
Staff Memo Supporting Documentation
THE CITY OF Dubuque
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Masterpiece on the Mississippi 2007-2012-2013
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: Request to Enter into Contract Negotiations
30" and 42" Diameter Sanitary Sewer Force Main and Lift Station
Assessment and Rehabilitation Project
DATE: January 13, 2016
On September 21, 2015, the City Council approved issuing a Request for Proposals to
seek consultants and/or firms to work alongside the City and coordinate the inspection,
emergency response planning and needs assessment for current and future design
changes to the City's 30" and 42" sanitary sewer force mains located between Cedar
Street Lift Station and the Water & Resource Recovery Center. Four responses were
received in response to the RFP.
City Engineer Gus Psihoyos recommends City Council authorization for the City to enter
into contract negotiation with Strand Associates to perform engineering consulting
services including, but not limited to, survey inspection, emergency response planning
and assessment of the City's 30" and 42" sanitary sewer force mains and Terminal
Street and Cedar Street Lift Stations.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
Micliael C. Van Milligen
MCVM:jh
Attachment
cc: Barry Lindahl, City Attorney
Cindy Steinhauser, Assistant City Manager
Teri Goodmann, Assistant City Manager
Gus Psihoyos, City Engineer
THE CITY OF I�uk)uque
DUB E AIIAmEricaCfly
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Masterpiece on the Mississippi 2007 2p,:,,NI
TO: Michael C Van Milligen, City Manager
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FROM: Gus Psihoyos, City Engineer
DATE: January 11, 2016
RE: Request to Enter into Contract Negotiations
30" & 42" Diameter Sanitary Sewer Force Main and Lift Station
Assessment and Rehabilitation Project
INTRODUCTION
The purpose of this memorandum is to request authorization for the City to enter into
contract negotiations with Strand Associates of Madison, Wisconsin to perform
engineering consulting services including, but not limited, to survey inspection,
emergency response planning and assessment of the City's 30" and 42" sanitary sewer
force mains and Terminal Street and Cedar Street Lift Stations.
BACKGROUND
In general, the force main system is comprised of lift stations and pressure sanitary
sewers known as force mains. Each component of the lift station and force main system
requires periodic evaluation and improvements to continue its vital role in conveying the
City's wastewater. Approximately 80% of wastewater that flows to the Water &
Resource Recovery Center for treatment arrives via the City's Cedar Street and
Terminal Street lift stations through a 30" and 42" force main network, the remaining
20% arrives via the Catfish Creek Lift Station through an 18" force main. A large
majority of the forcemain runs along the river and is parallel to CN Railroad. The City's
force main system is showing signs of wear and should be evaluated so that system
improvements can be planned. Notably, several sections of the 42" force main along the
banks of the Mississippi River are exposed and need to be further secured, a sluice
gate at Terminal Lift Station requires replacement, and the Terminal Street valve house
needs to be upgraded to ensure flows can be redirected for the replacement of the
sluice gate at Terminal Street lift station.
DISCUSSION
The project was brought before the City Manager and City Council for approval to seek
proposals in a memo dated September 15, 2015. Throughout October, the City sought
qualification statements and cost proposals from qualified consulting engineering firms
to perform assessment and engineering services associated with the City's large
diameter force mains and associated lift stations. Force main and lift station evaluation
is a specialized field of work that must be conducted by qualified professional
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engineers. On November 6t", the City received four proposals. The proposals were from
hbk Engineering of Iowa City, Iowa; Horner Shifrin of St Louis, Missouri; the team of
HDR & WHKS of Des Moines, Iowa; and the team of Strand Associates & IIW of
Madison, Wisconsin. The proposals were reviewed by City engineering and Water &
Resource Recovery Center staff, and at that time were evaluated to determine which
firms will be interviewed or dismissed. All teams received a follow up phone call from
the review team and a short phone interview to clarify specific points in their proposals.
The team of Strand and IIW was selected for in person interview. The team of Strand
and IIW demonstrated a clear understanding of the scope and a prioritization method in
synch with the proposal request and was selected for interview. Strand brought their
core team to the interview and presented on their proposal. Their presentation
demonstrated they will bring local, national, and international experience to this project,
work collaboratively with the City, and perform a robust analysis of the force mains and
lift stations. They recognized the critical issues of the exposed force main and the need
to address the immediate needs of the lift stations along with building relations with the
railroad and the US Army Corp of Engineers in order to perform both assessment and
reconstruction. The team of Strand and IIW was determined by the review team to be a
top candidate.
The remaining consultants were also ranked, with Horner Shifrin of St. Louis, Missouri
ranking second highest. Horner Shifrin also demonstrated a clear understanding of the
scope; however concerns were raised by the review team as to the ability of the firm to
service the contract as the firm was not scheduled to work with a local partner. This
concern could be discussed further, as the cost proposal did not include such fees, in
the event Strand Associates is not selected and the City authorizes negotiation with
Horner Shifrin.
RECOMMENDATION AND BUDGET IMPACT
The project is funded through CIP 7102606 Cedar and Terminal Street Force Mains and
Lift Station Assessment and Improvements, in the amount of $250,000. The project is
phased as it is unknown at this time as to the final cost of the improvements until after
the assessment phases listed below are completed. The proposal from Strand
Associates to complete the assessment phases totals $148,881.00. Of which,
approximately $40,000 is for the development of a Risk-Based Assessment tool, which
will be subject to further negotiation thereby possibly reducing the initial engineering
assessment fee to an estimated $108,000.00.
The available funding is $250,000, of which $108,000 to $148,881.00 will be contracted
for engineering assessment services, and $142,000 to $102,000 would be available for
any immediate construction needs following the preliminary evaluation. Additional
funding will be sought and requested in future budget cycles and will be presented as
estimates become available. The initial engineering assessment phases are listed
below:
Phase 1: The professional consultant will conduct the following scope of services
related to the 42" force main between the Terminal Street lift station and the
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W&RRC site, and the 30" force main between Cedar Street Lift Station and
Terminal Street Lift Station:
1. Field survey along the banks of the Mississippi River.
2. Force main air release valve evaluation.
3. Wooden pile structural assessment to determine replacement schedule.
4. Work with the City to develop a safety and emergency response planning
document. The document shall address emergency response in the event of a
break in the pipe along the Mississippi River or the need to take the 42" force
main out of service for periodic maintenance.
5. Assist Engineering Department staff to develop design details that provide future
inspection ports along proposed force mains.
6. Complete an on-site inspection of the Cedar Street Lift Station and the Terminal
Street Lift Station in preparation for determining the remaining service life of the
30" and 42" force mains from the Cedar Street Lift Station to W&RRC.
7. Determine the feasibility of redirecting flow for future lift station maintenance
projects, including recommendations on force main layout and valve house
redesign.
8. As part of the assessment, the Consultant will determine if leak detection is
warranted, measure remaining pipe wall thickness, and locate gas
pockets/entrained air and other anomalies. This effort will also identify the need
to add additional access points for future periodic inspections of the force main
as needed.
9. Develop preliminary design that allows the City to take the Terminal Street Lift
Station offline, while continuing to ensure flows from Cedar Street Lift Station
reach the W&RRC. This portion of the project should include valve house
redesign.
10.Terminal Street Lift Station — Conduct condition assessment and develop bid
documents to repair west foundation wall, repair 42" pipe penetration in west
foundation wall, construct flow bypass system, refurbish deteriorated industrial
coatings, and replace magnetic flow meter, gates and SCADA operations.
Following successful completion of the initial contract, the City will work with the
engineer to develop an additional services contract, based on their submitted fee
structure, to perform the following services:
Phase 2: The professional consultant will conduct the following scope of services
related to the 42" force main between the Terminal Street lift station and the
W&RRC plant site:
1. Design and bid a maintenance project to cover and protect the four locations
where the force main is exposed and tree removal on top of the pipe, including
necessary railroad, Army Corps of Engineers (ACOE) coordination and
permitting.
2. Prepare design and bid documents to support recommendations made following
the Phase 1 Assessment phase.
Phase 3: The professional consultant will conduct the following scope of services:
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1. Use the results of the force main service life measurement to develop an annual
preventative maintenance program.
2. Assist the City with importing the collected data into GIS for permanent storage.
Assist in developing GIS data collection tools so annual results of the preventive
maintenance program can be stored.
Following Strand's successful interview and comprehension of the proposal, the review
team is recommending the City enter into contract negotiations with Strand Associates
of Madison, Wisconsin.
REQUESTED ACTION
I respectfully request authorization for the City to enter into contract negotiations with
Strand Associates of Madison, Wisconsin to perform the phases described above.
cc: Jonathan Brown, WRRC
Denise Ihrig, Environmental Engineer
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