CR 2000-053 Approve Plans And Order Bids Storm Sewer Improvements
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March 1 7, 2000
Council Report 2000- 53
APPROVE PLANS AND ORDER BIDS
STORM SEWER IMPROVEMENTS - THERMOTECH SITE
PROJECT 99-09
Proposed Action.
Staff recommends adoption of the following motion: Move that Council approve plans
and authorize bids for the construction of Storm Sewer Proiect 99-09, Thermotech site.
Overview.
Council at its October 4. 1999 meeting authorized drawing up of plans to address storm
sewer and localized flooding issues in the vicinity of Thermotech on 5th Street South.
SEH-RCM Engineering has completed plans for this project and presents them to Council
for approval and order of bids. Meetings with affected property owners were held March
15 and 16.
Primary Issues to Consider.
. Project background
. Improvements and schedule
. Estimated costs and funding
. Recommendation
Supporting Information.
. Plans
~
~le, Engineering Snperintendent
Financial Impact: $98,000 Budgeted: Yes Source: Storm Sewer Utility
Related Documents (CIP, ERP, etc.): CIP
Notes:
.
Analysis of Issues.
· Project background
Previous to the extensive 1994 box culvert projects on Nine Mile Creek, two ponds
were established west of the Thermotech property. The two-pond system was
installed to immediately address localized flooding around the several commercial
building in that area. The view was to provide some flood storage in the ponds to
provide an outlet into Nine Mile Creek once the larger creek box culvert projects
were finished. Indeed, a 36" storm pipe was stubbed into the Thermotech property
for future use between the building structure and the adjacent Soo Line Railroad from
the huge creek culvert undertaking.
. Improvements
Plans call tor a connection to the 36" storm pipe stubbed westward from an existing
outfall into Nine Mile Creek and located between the Thermotech building and the
Soo Line Railroad. Pipe shall be laid in a relatively shallow trench westward to an
intake structure within the tlrst storage pond west of Thermotech. Two catch basins
will be installed at this location. Two additional catch basins will be installed over
the new pipe system adjacent to the building to facilitate roof drainage.
.
The consultant has structured this bid proposal such that the city can entertain two
pipe installation alternatives: corrugated plastic pipe or reinforced concrete pipe.
Potential bidders need to visit the site to determine the most preferable alternative
given the work space constraints at the site. The city has arranged a construction
staging area with Mactac Engineered Products for storage of construction materials
and equipment. The city is also arranging access agreements with three adjoining
property owners for movement of construction vehicles.
A bid opening is scheduled for April 13 and an award of contract on April 18. The
consultant anticipates construction to begin as early as May 15 with a two to three-
week project duration. July 1 has been set as the completion deadline.
· Estimated costs and funding
SEH-RCM Engineering estimates a construction cost of $72,300-78,400 depending
on the pipe alternative chosen. With an estimated total project cost of$98,000,
including engineering services, this is substantially lower than the projected $300,000
project found in the 2000-2004 CIP. The Storm Sewer Utility will serve to fund this
project.
. Recommendation
Staff recommends approval of the plans as proposed by SEH-RCM and authorizing of
. bids for construction of Storm Sewer Project 99-09.
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