CR 98-21 Approve Order Bids 6th Ave NJanuary 29, 1998
Proposed Action.
APPROVE PLANS AND ORDER BIDS
6TH AVENUE NORTH STORM SEWER, PROJECT 97 -11
HOPKINS PLAZA /HOME CENTER STORM SEWER, PROJECTS 97 -08
Staff recommends adoption of the following motion: Move that
Council approve plans and authorize bidding for 6th Avenue North
storm sewer improvements, Project 97 -11, and reorder bids for the
Hopkins Plaza /Hopkins Home Center Storm Sewer, Project 97 -08.
Overview.
Council at its December 2, 1997 meeting authorized RCM Associates
to develop plans for 6th Avenue North storm sewer improvements
from 3rd to 1st Street North. Direction was also given to divert
as much storm runoff north of T.H.7 as possible to the Eisenhower
Community Center pond. RCM has completed these plans for Council
consideration. Staff and the consultant conducted a public
information meeting concerning those plans on January 27.
Primary Issues to Consider.
o Nature of improvements
• Costs
o Schedule
o Hopkins Plaza /Home Center Project
o Recommendation
Supporting Information.
o Plans
i cowea‘_
Ja Gessele
Engineering Superintendent
Council Report No. 98 -21
Council Report 98 -21
January 29, 1998
Page 2
Analysis.
Nature of improvements
Plans call for the installation of a 42" storm sewer pipe
from 3rd Street North to its connection with an existing
trunk sewer at the 1st Street North /6th Avenue
intersection. The 3rd Street /6th Avenue intersection
profiles will be lowered approximately one foot to aid in
the containment of localized flooding to street areas
during intense rainfall events. This same intersection
will see the installation of 12 catch basins to facilitate
diversion of ponded waters on the street into the trunk
system itself.
Installation of the 42" pipe over the 2 -block length
necessitates lowering of the sanitary sewer main in 6th
Avenue and replacement of residential sanitary services at
least to the roadway edges. Residential water services on
the west side of 6th Avenue will be replaced from the water
main to the individual curb boxes. The 6th Avenue roadway
width will be narrowed 1 foot on either side to accommodate
the placement of new curb and gutter without damage to
existing boulevard trees.
The additional site to this project is one located between
T.H.7 and the North Service Drive from Elmo Service Road
eastward to the Eisenhower Center pond. This phase of
storm sewer involves installation of 30" to 42" pipe to
divert drainage on the north side of T.H.7 beginning at a
current crossing 'under the highway near Elmo Service Road
eastward and to intercept all other drainage that now
crosses the highway and carry it to the Eisenhower Pond.
Pond outlet characteristics will be changed to promote
greater storage volumes and potentially increasing
localized flooding of short duration on the Oakridge Golf
Course. Staff and the consultant have been coordinating
plan design and execution with the Oakridge representative.
Costs
The engineer estimates project costs at $521,000 for
construction and an additional $109,000 for engineering
services, for a total of $630,000. Funding is anticipated
to be in the form of a loan from the sanitary sewer
enterprise fund. Residential sewer and water service
replacement costs to the construction limits are assumed to
Council Report 98 -21
January 29, 1998
Page 3
be the City's. Council will need to take separate action
on that policy.
• Schedule
February 3
March 3
July 3
August 14
June 1, 1999
Approve plans and order bids
Award Contract
Substantial completion on 6th Avenue
Substantial completion T.H.7 Frontage Rd.
Final project completion
Substantial completion is defined as all contract work
complete except the final street bituminous wear course.
O Hopkins Plaza /Home Center Project
Plans were approved by Council in 1997 and bids were taken.
Because of extremely high quotes, Council chose to rebid,
this project as part of the 6th Avenue storm sewer
improvements. Council will need to formally take action to
revive this project. Anticipated funding source for this
project is TIF. The estimated construction cost is
approximately $50,000.
• Recommendation
Staff recommends that Council approve the plans as
submitted and authorize the bidding process to begin.
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