1d. Well #4 Water Quality Improvements: Approve Consultant Contract
CITY OF
CHANHASSEN
7700 Market Boulevard
PO Box 147
Chanhassen, MN 55317
Administration
Phone: 952,227,1100
Fax: 952,227,1110
Building Inspections
Phone: 952,227,1180
Fax: 952,227,1190
Engineering
Phone: 952,227,1160
Fax: 952,227,1170
Finance
Phone: 952,227,1140
Fax: 952,227,1110
Park & Recreation
Phone: 952,227,1120
Fax: 952,227.1110
Recreation Center
2310 Coulter Boulevard
Phone: 952,227,1400
Fax: 952,227,1404
Planning &
Natural Resources
Phone: 952,227,1130
Fax: 952,227,1110
Public Works
1591 Park Road
Phone: 952.227.1300
Fax: 952,227.1310
Senior Center
Phone: 952,227.1125
Fax: 952,227,1110
Web Site
www.ci.chanhassen.mn.us
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MEMORANDUM
Paul Oehme, Director of Public Works/City Engineer 7 0.
TO:
FROM:
Joseph Shamla, Project Engineer
DATE:
September 28, 2009
~
SUBJECT:
Well #4 Water Quality Improvements Project 09-02: Approve
Consultant Contract
PROPOSED MOTION
"The City Council is recommended to approve a consultant contract in the
amount of$56,965.00 with Kimley-Hom & Associates, Inc. for the Well #4
Water Quality Improvement Project No. 09-02.
City Council approval requires a simple majority vote ofthe City Council
present. "
BACKGROUND
At the January 12,2009 worksession, staff reviewed with the Council a groundwater
well study and water quality improvement report. This report included options to
improve the water quality from Well #4 located in Lake Susan Park. This well is
currently not being treated for naturally occurring minerals such as iron or
manganese. The well is used only during peak use times during the summer during
peak demand periods in which the water is blended with the other water in the
system. The test data of the water from Well #4 shows that the radium levels are at
the upper end of the Minnesota Department of Health (MDH) guidelines. Well #4 is
high in iron and manganese which gives the water a rusty color and can cause odor
problems. Staff still receives complaints from residents when this well is used mainly
because of the manganese in the well water.
OPTIONS FOR IMPROVEMENTS
Two (iltematives related to the treatment of Well #4 raw water were evaluated. The
first option is to pipe the raw water from the well to the East Treatment Plant and the
other option is to construct an on-site package plant for treatment. A cursory review
was also completed of sealing the most probable geological area which is most likely
causing the water quality problems. This option was not recommended or reviewed
further in any great detail because it would most likely reduce the production of the
well by as much as half. Converting this well to an ASR well was also reviewed but
not recommended because of government agency reviews and approvals that would
be required and because of cone ems for likelihood of success. Drilling a new well
Chanhassen is a Community for Life. Providing for Today and Planning for Tomorrow
Well #4 Water Quality Improvement Project
September 28, 2009
Page 2
was also considered but deemed not cost effective and most likely not going to improve the water
quality.
Based on this analysis, it was determined more cost effective to connect Chanhassen Well #4 to the
East Water Treatment Plant than to construct an on-site treatment plant for iron, manganese and
radium removal. Piping Well #4 to the East Water Treatment Plant would cost an estimated
$930,000 while constructing and on-site package treatment plant would cost approximately $1.1 to
$1.5 million. A benefit of constructing a pipe from Well 4 to the East Water Treatment Plant is this
pipe can also be used for a future well along the corridor. A package plant would mean more
maintenance in the future and more staff time to monitor and operate the package plant. The East
Water Treatment Plant has enough capacity and is equipped to treat to water from Well #4.
PROJECT DESCRIPTION
This project consists of
extension of a proposed 16"
diameter raw watermain
from Well #4 in Lake Susan
Park to an existing raw
watermain on the south side
of TH 5 by the pedestrian
bridge. This pipe will most
likely be direction ally bored.
Also included in the project
is an extension of a 4"
irrigation pipe and a 1"
service pipe. The purpose of
the project is to treat the
Well #4 water in the East
Water Treatment Plant. The raw watermain alignment and design will consider future wells to be
connected to the pipe.
On August 26,2009, a Request for Proposals (RFPs) for this project was emailed to Kimley-Hom &
Associates, Inc. and Barr Engineering Company. Both firms submitted a proposal which is
summarized as follows:
Kimley- Horn & Barr Engineering
Associates, Inc. Company
Submitted prior to the deadline ./ ./
Proposal format ./ ./
Transmittal letter submitted ./ ./
Members of the consultant team identified ./ ./
Understanding of project ./ ./
Base Fee $56,965 $58,300
g:\eng\public'--2009 projects\09-02 well #4 water quality improvements\approve consultant contract 09-28-09.docx
Well #4 Water Quality Improvement Project
September 28, 2009
Page 3
Kimley-Hom & Associates, Inc. has met the criteria set for this project. They have worked on
several projects within the City including the 2008 Street Improvement Project. Their work has been
satisfactory.
The contract will be a time and materials based work not-to-exceed amount. As with all engineering
contracts, the consultant must submit periodic invoices that staff will review before processing. The
consultant will be required to submit time sheets verifying the hours worked on the project and
expense sheets. Staff will review the invoices and expense sheets for accuracy and conformance to
the contract.
SCHEDULE
If this project moves forward, staff anticipates the following project schedule:
A ward Consultant Contract
Bid Opening
Award of Contract
Construction Start
Substantial Completion
Final Completion (Restoration)
September 28, 2009
November 13,2009
November 23,2009
December, 2009
February, 2010
May 2010
FUNDING
This project will be funded by the water fund and was budgeted for in the 2009 Capital Improvement
Program (W -025).
Attachments: CIP Page
Resolution
g:\eng\public~2009 projects\09-02 well #4 water quality improvements\approve consultant contract 09-28-09.docx
Capital Improvement Program
'City of Chanhassen, MN
'. Project# W-025
Project Name Well #4 Improvements
2009 thru 2013
i
Account # 3
Contact Paul Oehme
Department Water System Improvements
Type Improvement
Useful Life Unassigned
Category Utilities
Priority nfa
I
Account # 1 700-xxxx-475I
Account #2
I
Description I
Engineering has reviewed the test data of the water from Well #4 and currently, the radium levels are at the upper end of the Minnesota Dept of
Health (MDH) guidelines. In 2004, staff reviewed the radium problems with the MDH. The well is currently used as a peak well during high
demand periods which blends the Well #4 water with the other well water in the system. This well is also high in iron and manganese levels which
creates rusty water complaints. If the radium levels continue to rise, the City may have to enter into a monitoring program with the MDH on a
temporary basis if the issue is not addressed. The MDH at that time determines the acceptable amount of water that can be pumped into the City
system from Well #4. Staffwill draft a study to identifY the best solution to address the poor water quality issues at this well. Options for
improvements include redevelopment, abandoning the well, installing a small treatment plant at the well site or treating the water at the East Water
Treatment Plant. Extendinl!: a new water pipe from Well #4 to the East Water Treatment Plant's existing raw watermain is budl!:eted for 2009.
Justification I
Well #4 continues to test high for radium and is a high producer of iron and manganese which creates "rusty" water complaints.
Total Project Cost $930,000
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Expenditures
Construction
2009
930,000
930,000
2010
2011
2012
2013
Total
930,000
930,000
I
Total
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Funding Sources
Water Utility Fund
2009
930,000
930,000
2010
2011
2012
2013
Total
930,000
930,000
I
Total
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Operational Impact/Other I
This project will not increase operations cost.
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132
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CITY OF CHANHASSEN
CARVER AND HENNEPIN COUNTIES, MINNESOTA
DATE:
September 28. 2009
RESOLUTION NO:
2009-
MOTION BY:
SECONDED BY:
A RESOLUTION AWARDING CONSULTANT CONTRACT FOR THE
WELL #4 WATER QUALITY IMPROVEMENTS
PROJECT NO. 09-02
WHEREAS, Requests for Proposals were sent out on August 26, 2009 for the Well #4
Water Quality Improvements Project No. 09-02; and
WHEREAS, Kimley-Horn has met the criteria set for the project,
NOW, THEREFORE, BE IT RESOLVED that the Chanhassen City Council hereby
approve a consultant contract with Kimley-Horn & Associates in the amount of $56,965.00 for
engineering services related to the Well #4 Water Quality Improvement project.
Passed and adopted by the Chanhassen City Council this 28th day of September, 2009.
ATTEST:
Todd Gerhardt, City Manager
Thomas A. Furlong, Mayor
YES
NO
ABSENT