HomeMy WebLinkAbout10/15/2013 Retention Basin Dredging Project 2013X / Mount Prospect Public Works Department
INTEROFFICE MEMORANDUM
TO: VILLAGE MANAGER MICHAEL E. JANONIS
FROM: ENGINEERING ASSISTANT
DATE: OCTOBER 8, 2013
SUBJECT: 2013 RETENTION BASIN DREDGING PROJECT
KENSINGTON BUSINESS PARK — BASIN #511
CONTRACT AWARD - $186,763.00
Background
The Village of Mount Prospect is responsible for maintaining the 11 retention basins in the Kensington
Business Center. Per the agreement made with the business park in the 1980s, Village maintenance
includes sediment dredging, slope erosion protection, and outlet structure upkeep. Staff has identified
Basin #513 on Business Center Drive (map attached) to be this year's dredging project.
The project will involve pumping water out of the basin into the adjacent Feehanville Ditch, loading
accumulated sediment, and hauling it to an offsite landfill. The bottom and sides of the basin will then be
reshaped to. conform to the original design. At project's end the shoreline will be stabilized with stone,
silt basins will be constructed near inflow structures, and the site will be restored with sod. Subsequent
rainfall will naturally refill the retention basin.
Bids Results
A Notice to Bidders was published in the local newspaper and several local contractors were sent
invitations to bid on the project. At 1:00 p.m. on October 7, 2013, sealed bids were publicly opened and
read aloud.
Four (4) contractors submitted bids for this project. Bids ranged from a low of $169,785 by Copenhaver
Construction, Inc. to a high of $193,294 by Berger Excavating. The Engineer's Estimate is $178,662.50
All bidders submitted a bid deposit in the amount of 10% of their total bids as required by the contract
documents. 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.
Bidders Total Bid
Copenhaver Construction, Inc. (Gilberts, IL) $169,785
V3 (Woodridge, IL) $174,000
Martam Construction, Inc. (Elgin, IL) $177,016
Berger Excavating Contractors, Inc. (Wauconda, IL) $193,294
Engineer's Estimate $178,662.50
Page 2 of 2
2013 Retention Basin Dredging Project
October 8, 2013
Discussion
The low bidder, Copenhaver Construction, Inc., completed similar projects for the Village including
Retention Basins #7, #5a, and #4 in 2008, 2011 and 2012 respectively. Along with those successful
projects, the Village of Highland Park, Wheeling Township, Glenview and South Barrington Park
Districts all indicated Copenhaver has done quality work in their communities in recent years.
Copenhaver meets the requirements of the contract documents and their references show their
workmanship to be good.
Since the contractor's bid is based on estimated quantities, I recommend a 10% contingency of $16,978
be added to the proposed contract to account for variable sediment thickness and possible increases in the
amount of sediment removed. The revised total contract award would be $186,763.00
Recommendation
I recommend that the low bidder, Copenhaver Construction, Inc. of Gilbert's, IL, be awarded the
construction contract for the 2013 Retention Basin Dredging Project in the amount not to exceed
$186,763.00. There are sufficient funds in the 2013 Budget to cover this proposed contract.
Please include this item on the October 15 Village Board Meeting Agenda.
Daniel J. Randolph, P.E.
I concur with the above
Works Sean P. Dorsey
Attachments: Project Location Map
c: Village Clerk Lisa Angell
H:\ Engineering \Ponds\kbc_basin_5b \Construction \construction rec memo.doc
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