1h Authorize Emergency Repairs to Well 2
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
TO:
Todd Gerhardt, City Manager
FROM:
Paul Oehme, Dir. of Public Works/City Engineer
DA TE:
c~.
July 23, 2007
SUBJ:
Well No.2 Emergency Repairs, PW034
REQUESTED ACTION
Staff is requesting the City Council add this item to the Consent Agenda to
authorize expenditure for repair of Well No.2 in an amount not to exceed
$35,000.
DISCUSSION
On Monday, July 16, Well No.2, located at 191 West 77th Street, suffered a
failure. The well is a "line shaft" type pumping system where a motor resides
above-ground and approximately 450 feet of shaft extends below the ground to a
pump impeller that draws water up the casing surrounding the shaft and transmits
it to the East Water Treatment Plant. The failure is due to wear in the shaft and
bearings as they extend down into the aquifer, which revealed itself in the form of
serious vibration. The well was immediately shut down to prevent shaft
separation and "dropping" the shaft into the well. Contractors were dispatched to
assess the problem and determined that it would have to be pulled out, which
occurred on Wednesday, July 18. Very preliminary estimates are that repair costs
is $35,000.00. This well was identified and scheduled for rehabilitation in the
CIP this fall under Project Number W-032. Staff is working with the Contractor
to fix the well as soon as possible.
RECOMMENDATION
Due to current weather conditions and heavy water usage, staff recommends that
the City Council approve the allocation of emergency funds for the repair of Well
No.2. in the amount not to exceed $35,000.
c: Kelley Janes, Utility Superintendent
The City ot Chanhassen · A growing community with clean lakes, quality schools, a charming downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play.
g:\eng\public\pw034 well no. 2\emergency repairs.doc
Justification I ..
To extend the life and ensure reliability of the City's well fields. Perfonmng regular maintenance will extend the life of well components, reduce
emergency calls and have a more reliable water supply system.
Capital Improvement Program
City of Chanhassen, MN
2007 thru 2011
Contact Unassigned
Department Water System Improvements
Type Improvement
Useful Life Unassigned
Category Utilities
Priority n/a
Project #
W-032
Project Name Well Rehabilitation Program
Account # 1 700-0000-4530
Account # 3
Account #2
Total Project Cost $210,000
Description 1
This program annually inspects and performs regular maintenance of the City's wells. Well pumps are recommended to be serviced every 8 years.
Expenditures
~ Maintenance
2007
40,000
Total 40,000
2008
40,000
40,000
2009
40,000
40,000
2010
45,000
45,000
2011
45,000
45,000
Total
210,000
210,000
Funding Sources
Water Utility Fund
2007
40,000
Total 40,000
2008
40,000
40,000
2009
40,000
40,000
2010
45,000
45,000
2011
45,000
45,000
Total
210,000
210,000
Operational Impact/Other
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120
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