HomeMy WebLinkAbout06/07/2011 2011 Backyard Drainage ProgramMount
Mount Prospect Public Works Department
1 INTEROFFICE MEMORANDUM
TO: VILLAGE MANAGER MICHAEL E. JANONIS
FROM: PROJECT ENGINEER
DATE: JUNE 1, 2011
SUBJECT: 2011 BACKYARD DRAINAGE PROGRAM
(CONTRACT AWARD NOT TO EXCEED $140,000.00)
Background
Many properties in Mount Prospect experience recurring backyard flooding after any significant
rain event. Often water will pond in their yards and remain there for a considerable length of time.
On May 13, 2008, the Village Board authorized Staff to proceed with the Backyard Drainage
Program in an effort to assist residents in reducing the backyard flooding they experience.
Staff has received requests for assistance through the Backyard Drainage Program for over 100
residential properties. Staff identified several of the properties experiencing the worst flooding,
based upon such criteria as depth of ponding, area of inundation, number of properties affected,
structures impacted, and duration of ponding. Staff then surveyed the existing conditions, and
prepared plans to better drain each of these properties. Each design includes an inlet in the
backyard draining through a pipe connecting to the existing sewer system in the public right of way.
To protect the receiving system from being overwhelmed, each design includes a restrictor that will
control and slow the discharge into the reducing sewers. These restrictors, while serving to protect
the Village sewer systems, may cause water to pond in the backyards during heavy rain events for
a short duration. To accommodate this ponding water, rain gardens will be installed around the
inlets. These rain gardens will provide a place for any ponding water to accumulate, and provide a
mechanism for the water to infiltrate into the ground quickly.
Following construction, the property owners will be responsible for maintenance of the storm sewer
and rain gardens on the private properties; however, it shall be the Village's responsibility to
maintain the new storm sewer in the public right of way. Each design was contained on a single
property, avoiding the need for easements or agreements between property owners.
Bid Results
Sealed bids for the 2011 BACKYARD DRAINAGE PROGRAM were publicly opened and read
aloud on May 26, 2011 at 1:00 P.M. A Notice to Bidders was published in a local newspaper as
required and invitations were sent to contractors familiar with this program. A mandatory pre -bid
meeting was held on May 19, 2011 at 10:00 A.M. to discuss the intent and specifics of the
program, as well as to answer any questions the contractors may have had in formulating their
bids. Five (5) contractors attended the pre -bid meeting.
Three (3) contractors submitted bids for this project. The bids ranged from a low of $155,231.00
by Concrete Etc., Inc., to a high of $194,575.00 by Copenhaver Construction Company. The
Engineer's estimate for the project was $187,835.00.
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2011 Backyard Drainage Program
June 1, 2011
Each of the bidders submitted a bid bond in the amount of 5% of the total bid as required in the bid
proposal packet. All bids were checked for their accuracy. No errors were found. All bidders
correctly signed their bids and bid bonds. Below is a summary of the bids:
Concrete Etc., Inc. $155,231.00
Martam Construction, Inc. $169,295.00
Copenhaver Construction Company $194,575.00
Engineer's Estimate $187,835.00
Discussion
The low bidder, Concrete Etc., Inc., was recently awarded the Village's Catch Basin and Inlet
Repair contract. They have not yet started work on this project.
We have researched similar drainage work completed by Concrete Etc., Inc. in West Deerfield
Township, and for a private a private resident in Highland Park; both found Concrete Etc., Inc.'s
work to be acceptable.
This is the second year of the Backyard Drainage Program. During the first year of the program in
2009, we completed installation at eleven (11) sites. Funds were not available in 2010, so no
construction was performed under the Backyard Drainage Program.
We estimate that installation can be completed on seven (7) sites. However, because the cost is
based on estimated quantities, the project will be evaluated throughout the course of construction
to determine if any sites can be added, or have to be deferred until additional funds become
available.
Recommendation
I therefore recommend the contract for the 2011 BACKYARD DRAINAGE PROGRAM to be
awarded to the low bidder, Concrete Etc., Inc. in an amount not to exceed $140,000.00. There are
sufficient funds in the 2011 Budget to cover this proposed contract.
Please include this item on the June 7 th Village Board Meeting Agenda.
harles M. Lindelof, P.E.
I concur with the above recommendation.
Director of Publfc Works` s?e ,
cc: Village Clerk Lisa Angell
H: \Engineering \Drainage \Backyard Drainage Program\201 1 \Recommend atio n.docx