HomeMy WebLinkAbout8C - Lift Station #3 Upgrade
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AGENDA NUMBER:
PREPARED BY:
SUBJECT:
DA TE:
8C
BRUCE LONEY, ASSISTANT CITY ENGINEER
CONSIDER APPROVAL OF LIFT STATION #3
UPGRADE
MARCH 21,1994
INTRODUCTION:
Lift Station No. 3 is located off of Franklin Trail in the
Brooksville Hills 5th Addition and was built in 1971 to
serve the Brooksville Hills area. The Cardinal Ridge
subdivision is also to be served by this lift station. The
lift station is close to capacity currently and needs to be
upgraded to handle the increased sewage flow generated
by Cardinal Ridge. This Agenda Item is for Council to
consider approval of upgrading Lift Station No.3 and to
authorize the City's engineering consultant, MSA
Consulting Engineers to perform the design and
construction engineering of this project.
BACKGROUND:
Lift Station No.3 has an existing capacity of 180 gallons
per minute and was constructed in 1971. Calculations
show that with the addition of Cardinal Ridge 2nd
Addition, the lift station will be over capacity and it is
necessary to increase the capacity. A sewer study was
done by City Staff for this area in 1988 which indicated an
upgrade of the lift station is necessary once the area east
of Brooksville Hills develops. With the fInal plat
approval of Cardinal Ridge 2nd Addition on the Council
Agenda, the time to increase the pumping capacity of the
lift station is this year.
Enclosed with the Council Agenda Report is a copy of the
engineering services proposal from MSA Consulting
Engineers on the design and construction engineering of
$5,500.00 A preliminary cost estimate of the construction
is $37,500.00. The construction items include replacing
both pumps in the lift station. Since the construction cost
is estimated to be over $25,000.00, an advertisement for
bids and public bid opening is required. Staff would bring
plans back to Council in the future for approval and for
establishing a bid opening. Construction would be done
this year pending Council authorization. A map has been
also enclosed showing the lift station location and sewer
service area.
4629 Dakota St. S.E., Prior Lake, Minnesota 55372-1714 / Ph. (612) 447-4230 / Fax (612) 447-4245
AN EQUAL OPPORTUNITY EMPLOYER
T T ....
The sanitary sewer lift station upgrade is needed to serve
the overall area and not just the plat of Cardinal Ridge.
The appropriate funding source is Trunk Reserve fund.
An additional benefit is that the controls and pumps have
served their useful life and this would provide for a new
lift station.
RECOMMENDATION:
Staff recommends that the Lift Station upgrade project be
approved and that MSA Consulting Engineers be
authorized to design and oversee the construction for this
project. Authorization for payment of this project from
the City's Trunk Reserve Fund is recommended as well.
FINANCIAL IMPACT:
This amount will be paid from the Trunk Reserve Fund
and a sufficient fund balance exists to cover this
expenditure.
ACTION REQUIRED:
Make a motion upgrading of Lift Station No.3, to
authorize MSA Consulting Engineers for the design and
construction up to $5,500.00 and to authorize payment of
this project out of the City's Trunk Reserve Fund.
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MS. ~
roNSUL l1NG IlNGlNIlERS
CIVil ENGINEERING:
ENVIRONMENTAL
MUNiCiPAL
PlANNING
STRUCTURAL
SURVEYING
TRAFFIC
TRANSPORT A nON
1326 Energy Pork OrNe
St. Paul. MN 55108
612-644-4389
Fax: 612-644-9446
9800 SheIord Parkway
Minneapolis, MN 55441
612.5A6-002
Fox: 612.544-6398
March 14, 1994
File: 900-00 1-00
Mr. Bruce Loney
Assistant City Engineer
City Hall
4629 Dakota Street SE
Prior Lake, MN 55372
RE: ENGINEERING SERVICES PROPOSAL; LIFf STATION NO.3
Dear Mr. Loney:
Lift Station No.3 is located along Franklin Trail approximately 1,000 feet north of the
County Road 12/Franklin Trail intersection. The lift station was constructed in 1971 to serve
the Brooksville Hills Addition(s). The existing capacity of the lift station is approximately
180 gallons per minute (gpm).
The Cardinal Ridge Subdivision will also be served by Lift Station No.3. Calculations show
that the first phase of the Cardinal Ridge Subdivision will utilize all the remaining reserve
capacity of the lift station. Now that the second phase of Cardinal Ridge is under
construction, it is necessary to increase the capacity of the lift station. Wastewater flow
calculations indicate that the capacity of the lift station should be increased to 400 gpm.
Increasing the capacity of Lift Station No. 3 will require replacement of the pumps and
motors, control panel, and discharge piping internal to the wet well. A cost estimate for this
work appears below:
.
Pump Replacement
2 @ $5,OOO/each
Control Panel
1 @ $lO,OOO/each
Piping Replacement
Subtotal
$10,000
10,000
12,~OO
$32,500
.
.
Contingency (15%)
Subtotal
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$37,500
Engineering
TOTAL
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$41,000
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Mr. Bruce Loney
March 14, 1994
Page Two
MSA, Consulting Engineers will prepare plans and specifications for the project, administer
the bidding process, attend the bid opening, monitor construction, prepare pay estimates and
change orders, conduct a final inspection, and prepare record drawings. MSA will invoice
for the project in accordance with the number of hours worked and our hourly rate schedule.
MSA will not invoice for direct expenses with the exception of subconsultants (electrical
engineering). Subconsultant expenses will be invoiced at MSA's cost. The maximum billing
for this project, including subconsultants, will not exceed $5,500.
MSA is pleased to be of service to the City of Prior Lake and would be happy to continue
our relationship with the City by completing this project.
If you have any questions regarding our proposal, please feel free to call me at 644-4389.
Sincerely,
MSA, CONSULTING ENGINEERS
Thomas A. Roushar, P.E.
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