2015 SCADA (Flow Metering Stations) Manhole Installation Project Acceptance Copyright 2014
City of Dubuque Consent Items # 15.
ITEM TITLE: 2015 SCADA (Flow Metering Stations) Manhole Installation
Project Acceptance
SUMMARY: City Manager recommending acceptance of the public
improvement construction contract for the 2015 SCADA
(flow metering stations) Manhole Installation Project, as
completed by Connolly Construction, Inc.
RESOLUTION Accepting the 2015 SCADA (Flow Metering
Stations) Manhole Installation Project and authorizing the
payment to the contractor
SUGGESTED DISPOSITION: Suggested Disposition: Receive and File; Adopt
Resolution(s)
ATTACHMENTS:
Description Type
2015 SCADA Manhole Installation Project-MVM Memo City Manager Memo
Staff Memo Staff Memo
Resolution Resolutions
Engineer's Certificate of Completion Supporting Documentation
THE CITY OF Dubuque
DUB E i"
Masterpiece on the Mississippi 2007.2012.2013
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: 2015 SCADA (Flow Metering Stations) Manhole Installation Project
CIP 7101335
DATE: August 8, 2016
City Engineer Gus Psihoyos is recommending acceptance of the public improvement
construction contract for the 2015 SCADA (flow metering stations) Manhole Installation
Project, as completed by Connolly Construction, Inc., in the final contract amount of
$145,588.33, which is a 14.33% increase from the original contract amount of
$127,339.97. The cost increase was primarily due to unsuitable material from manhole
excavation needing to be replaced with granular backfill. There was an overage of
temporary cold patch asphalt due to the cold weather conditions. Also, additional curb
and gutter, sidewalk and concrete street patching ran over the original engineer's
estimate.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
Zy&X---
Mic ael 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 — Dubuque
DUB E JUI-AffO'cac"Y
Masterpiece on the Mississippi 700'�.2012,2014
TO: Michael C. Van Milligen, City Manager
FROM: Gus Psihoyos, City EngineerA
7
DATE: August 5, 2016
SUBJECT: 2015 SCADA(flow metering stations) Manhole Installation Project
CIP 7101335
INTRODUCTION
The enclosed resolution provides for the acceptance of the public improvement
construction contract for the 2015 SCADA (flow metering stations) Manhole Installation
Project.
BACKGROUND
The City of Dubuque, Iowa has entered into a Consent Decree in the case of The
United States of America, and the State of Iowa v. The City of Dubuque, Iowa, Civil
Action No. Case 2:11-cv-01011-EMJ, Civil Action Number 2008V00041, DOJ Case
Number 90-5-1-1-09339, United States District Court for the Northern District of Iowa.
The provisions of the Consent Decree apply to and are binding upon the City and its
officers, directors, employees, agents, servants, successors, assigns, and all persons,
firms and corporations under contract with the City to perform the obligations of the
Consent Decree. The City is required to perform collection system flow monitoring per
a schedule established in the Consent Decree, the City is flow monitoring beyond the
schedule using supervisory control and data acquisition (SCADA) system technology in
sanitary sewer manholes. We are requesting several sanitary sewer manholes (flow
metering stations) be replaced to provide the best conditions for permanent flow
monitoring.
DISCUSSION
The 2015 SCADA(flow metering stations) Manhole Installation Project was completed
by Connolly Construction, Inc. of Peosta, Iowa, in the final contract amount of
$145,588.33 which is an 14.33% increase from the original contract amount of
$127,339.97. The cost increase was primarily due to unsuitable material from manhole
excavation needing to be replaced with granular backfill. There was an overage of
temporary cold patch asphalt due to the cold weather conditions. Also, additional curb
FAPROJECTS\Storm and Sanitary\Sanitary\SCADA Manholes\Council\INITIATE\Initiate Memo-2015 SCADA Manhole Installation
Project.doc
and gutter, sidewalk and concrete street patching ran over the original engineer's
estimate.
The Consent Decree identifies five sewersheds that are required to be individually flow
metered for specific periods over a five year schedule. While flow metering for short
periods of time may result in locating inflow/infiltration under one or two rain events, it
will not capture how the sanitary sewer system will perform under different or changing
rain patterns more commonly seen. Long term or permanent flow monitoring is a
method used to continually meter the sanitary sewer system, so staff can observe
changes in flow; document and measure how rain events impact the system; and
provide valuable feedback on how capital improvements have or have not reduced
inflow/infiltration. The proposed permanent flow metering stations are designed to not
only monitor and record flows, but also report them in real-time triggering an alarm if
there are any changes in the system where a flow meter is in place. In the event of
increased flows or water level changes, or a fouled meter sensor, the flow metering
stations will report via the SCADA system to Public Works, the W&RRC, and the
Engineering department for immediate response to reduce the possibility of sanitary
sewer overflows.
This project involved the replacement of four (4) sanitary sewer manholes and their
conversion to permanent flow metering stations in Sewersheds 7 (a & b), 11, and 12,
please see the following location map.
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The flow metering station for Sewershed 5 was installed and operational in November
2015; and the metering station for Sewershed 10 will be delayed until the completion of
Phase 2 of the Bee Branch project.
BUDGET IMPACT
The summary of project costs for the 2015 SCADA(flow metering stations) Manhole
Installation Project is as follows:
Award Final
Construction Contract $ 127,339.97 $ 145,588.3
Contingency (10%) 12,734.00 0.0
Construction Engineering & Inspection (15%) 21,011.10 21 838.2
Total Project Cost $161.085.07 $167,426.58
The funding for the 2015 SCADA(flow metering stations) Manhole Installation Project
summary is as follows:
CIP No. Fund Description Fund Amount
7101335 Sanitary Sewer Manhole Replacement $ 167,426.58
ACTION TO BE TAKEN
The City Council is requested to adopt the attached resolution to accept the
improvements and to authorize the payment of the contract amount of $145,588.33 to
Connolly Construction, Inc., for the 2015 SCADA(flow metering stations) Manhole
Installation Project.
cc: Denise Ihrig, Environmental Engineer
Deron Muehring, Civil Engineer
Nick Connolly, I & I Inspector
RESOLUTION NO. 301-16
ACCEPTING THE 2015 SCADA (FLOW METERING STATIONS) MANHOLE
INSTALLATION PROJECT AND AUTHORIZING THE PAYMENT TO THE
CONTRACTOR
WHEREAS, the public improvement contract for the 2015 SCADA(flow metering
stations) Manhole Installation Project (the Project) has been completed by the
Contractor, Connolly Construction, Inca (Contractor), the City Engineer has examined
the work and recommends that the Project be accepted; and
WHEREAS, the final contract amount for the Project is $145,588.33;
WHEREAS, the Contractor has previously been paid $138,308.91, leaving a
balance of $7,279.42; and
WHEREAS, the City Council finds that the recommendation of the City Engineer
should be accepted.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
DUBUQUE, IOWA:
Section 1. The recommendation of the City Engineer is approved and the Project
is hereby accepted.
Section 2. The Finance Director is hereby directed to pay to the Contractor the
balance of the retainage of $7,279.42 as provided in Iowa Code chapter 573, and to pay
such retainage in accordance with the provisions of Iowa Code chapter 573 or Iowa
Code chapter 26.13.
Passed, approved and adopted this 15th day of August, 20)
Attest:
Trish L. Gleason, Assistant City Clerk
Roy D. Wuol, Mayor
CITY ENGINEER'S CERTIFICATE OF FINAL COMPLETION OF THE 2015 SCADA
(FLOW METERING STATIONS) MANHOLE INSTALLATION PROJECT
The undersigned City Engineer of the City of Dubuque, Iowa, hereby certifies that
he has inspected the 2015 SCADA(flow metering stations) Manhole Installation Project,
and that said Project has been performed in compliance with the terms of the Public
Improvement Contract, and that the total cost of the completed work is $167,426.58.
Dated this / day of fr1/✓'` "(1-Y; , 2016.
Filed in the office of the City Clerk on the
Gus Psihoyos, City Engineer
day of � 2016
Kevir(S: Firnstalil, 61\ifC, City Clerk