1g ChgOrder Lift Station No. 2
CITY OF
CHANHASSEN
7700 Market Bou levard
PO Box 147
Chanhassen, MN 55317
Administration
Phone 952.227.1100
Fax 952.227.1110
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Natural Resources
Phone: 952.227.1130
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1591 Park Road
Phone: 952.227.1300
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Senior Center
Phone: 952.227.1125
Fax: 952.227.1110
Web Site
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MEMORANDUM
TO:
Todd Gerhardt, City Manager
'7°"
Paul Oehme, City Engineer/Dir. of Public W orks ~ (
FROM:
DATE:
O~Þ'
~
Approve Change Order for Lift Station No, 2 Contract
Project No. 01-lIC
March 16,2005
SUBJ:
REQUESTED ACTION
Approve Change Order NO.1 for Lift Station No.2 Contract.
BACKGROUND
On October 25,2004, Council awarded a contract to EBI Drilling, Inc. for
installation of a new forcemain for Lift Station No.2. Lift Station No.2 is
located on Frontier Trail just south of Frontier Court. The forcemain was
installed using a directional boring technique or no dig method. This type of
installation is used to minimize the excavation of the pavement surface and reduce
the inconvenience to the residents and traveling public. This type of installation
uses high density polyethylene pipe which is very strong and will not deteriorate
in corrosive soils. The Lift Station No.2 project final cost was approximately
$5,000 less than the contract amount.
The forcemain for Lift Station No. 22 has broken several times in the past year
and twice in the past three weeks. Due to the continuing breaks, a portion of this
forcemain is recommended to be replaced as soon as possible and the work
change ordered into the Lift Station No.2 contract.
Lift Station No. 22 is located at the comer of Dell Road and Quattro Drive. The
lift station services the industrial park along 77th street and Quattro Drive. The lift
station has a 4-inch forcemain that is approximately 1800 feet long. The
forcemain is installed in the right-of-way of Dell Road under the sidewalk and
under the pavement of 77th Street. The forcemain is made out of ductile iron pipe
and was installed in 1985. In the past, the portion of the forcemain along Dell
Road had broken seven times and in the last year alone has broken six times. The
portion of forcemain along 77th has broken seven times in the past and in the last
year has broken once. These breaks can be attributed to highly corrosive (hot)
soils that were backfilled around the pipe. Inspection of the forcemain at the
recent breaks indicated that more breaks can be expected due to the highly
deteriorated pipe. Staff had planned to replace the entire 1800-foot forcemain in
2008,2005 CIP #018, in conjunction with a street improvement project along 7ih
Street; however, due to the recent amount of forcemain breaks and inspection of
the forcemain pipe, staff is requesting to replace approximately 400 feet of the
force main along Dell Road as soon as possible. Staff is proposing to use the
The City 01 Chanhassen · A growing community wilh clean lakes, quality schools, a channing downtown, thriving businesses, winding trails, and beautiful parks. A great place to live, work, and play.
Todd Gerhardt
March 17, 2005
Page 2
contractor from the Lift Station No.2 work to directional bore a new forcemain,
hire a local contractor to make the pipe connections to the existing forcemain on
77th Street and have public works staff perform the pavement patches and
sidewalk restoration work. No additional sidewalk is proposed to be removed
with the directional bore work; however, the last few breaks have caused a
significant amount of sidewalk to be removed.
It is estimated that for each forcemain break, it costs the City approximately
$4,000 for a contractor to dig the break, staff overtime, and restoration costs.
The cost estimate for the directional bore work is $10,100. The estimate for the
pipe connection work is $5,000. The other material costs needed for the
miscellaneous restoration work to be done by City staff is approximately $2,000.
The total estimated out-of-pocket cost for the forcemain replacement is $17,100.
Staff is proposing to use funds from the Sanitary Lift Station Rehabilitation
Program, 2005 CIP #SS-017, to pay for the work. The forcemain replacement
work is within the costs allocated for this year's sanitary lift station rehabilitation
program of $45,000. The total expenditure from this CIP line item is estimated to
be $34,498.91. This includes the lift station pumps being considered for
replacement also on the March 28, 2005 Council agenda.
At this time, staff recommends approving Change Order No. 1 for the Lift Station
No.2 contract to replace 400 feet of forcemain for Lift Station No. 22 for an
amount of $10,100.
Attachments: Exhibit A.
Directional Bore Work Estimate.
c: Kelley Janes, Utility Superintendent
G:\ENGIPUBLICIOI-I1Clbkg 031605 co#l for dell rd fm.doc
Exibit A
Lift Station 22
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MAR.16.2005 12:24PM
EBI
NO.57l
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SPECIALISTS IN HORIZONTAL DIRECTIONAL DRILLING
5910 FREMONT STREET DULUTH, MN 55807
218.628.0454 PHONE 218.628.0455 FAX
March 16,2005
Matthew S. Saam, P.E.
Assistant City Engineer
City of Chanhassen
7700 Market Blvd,
Chanhassen, MN 55317
RE: Change Order
Lift Station #2 Improvements
Project No. OI-IIC
Dear Mr. Saam:
After a review your fax dated March 15, 2005 pertaining to a change order for the above referenced
project EBI agrees to perform the following;
TASK EST. UNITS UNIT PRICE EST. TOTAL
6" HDPE DIPS force main HDD 400 feet $24.00/ft $9,600.00
F &1 6'1 MJ adaptors with plugs for testing 2 $250.00/ea $500.00
The total anticipated cost for the change order is $10,100.00. Please do not hesitate to call me at
(218) 628-0454 if you have any questions conceming this change order.
Sincerely,
(J.AAAR_ ¡q tJ~
a:;::~~arrcn
Office Manager
YOUR COMPLETE CONTRACTOR SERVICES COMPANY
Directional drjlling . Sewer, \IIaref &. gas syst.Cms. Demolition. Wetland S0Niccs