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TO: Mayor Richard C. Irvin
FROM: Kurt Muth, P.E., Engineering Coordinator
DATE: August 13, 2018
SUBJECT:
Resolution to Reject All Bids for the Lakeview Drive Storm Sewer Repair project for the Engineering Division.
PURPOSE:
To obtain City Council approval to Reject All Bids for the Lakeview Drive Storm Sewer Repair project for the Engineering Division.
BACKGROUND:
In fall 2017, the Water & Sewer Maintenance division was notified of a sink hole in the rear yard of 145 Lakeview Drive on the bank of the lake. Upon inspection, it was determined that the sink hole was located over a 60" corrugated metal pipe (CMP) that extends into the lake approximately 10'. In addition to the sinkhole, the visible portion of the 60" CMP in the lake appeared to be failing and in a hazardous condition. Original design drawings for the storm sewer were located which showed that the majority of the pipe run was constructed with 48" reinforced concrete pipe (RCP), but the last 40' of the pipe run was constructed with 60" CMP. With the normal water of the lake over the top of the 60" CMP the exact location of the pipe transition could not be confirmed.
DISCUSSION:
The contract to perform the work was advertised on June 10, 2018 and bids were opened on June 27, 2018. Three bids were received.
The lowest bid received was for $73,630.00 which was to cover the replacement of the deteriorated 60" CMP.
Prior to presenting the project to the Buildings, Grounds, and Infrastructure Committee, the homeowners of 145 Lakeview Drive notified the City that they would not execute the temporary construction easement until the lake was dewatered and the repair location was determined. The City did not take this approach initially because it would mean dewatering the lake for inspection and again for construction which would most likely frustrate the property owners around the lake. Once the lake was dewatered for inspection, it was found that the 60" CMP requiring replacement was shorter than anticipated. As a result, the Water & Sewer Maintenance Division decided to perform the replacement of the pipe with 60" Plastic pipe in lieu of the 48" concrete pipe proposed in the bid documents. Using this lighter pipe material allowed for the use of smaller machines which limited the disturbance area and prevented impacts to the nearby tree or retaining wall that the adjacent property owners were concerned about.
While the lake was dewatered, all of the storm sewer outfalls into the lake were inspected. It was found that six of the ten outfalls into the two lakes had corrugated metal pipe extensions. Three of those six pipe extensions were found to be severely deteriorated. In addition to the 60" pipe discussed above, the Water & Sewer Maintenance Division replaced 12" and 18" extensions that were also severely deteriorated and would have not been included with the bids received. The three remaining CMP extensions showed signs of deterioration but were not in immediate need of replacement and will be monitored for possible future replacement.
IMPACT STATEMENT:
None.
RECOMMENDATIONS:
That the Mayor and City Council authorize the Director of Purchasing to reject all bids received on June 27, 2018 for the Lakeview Drive Storm Sewer Repair project for the Engineering Division.
cc: Building, Grounds and Infrastructure Committee
CITY OF AURORA, ILLINOIS
RESOLUTION NO. _________
DATE OF PASSAGE ________________
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A Resolution to Reject All Bids for the Lakeview Drive Storm Sewer Repair project for the Engineering Division.
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WHEREAS, the City of Aurora has a population of more than 25,000 persons and is, therefore, a home rule unit under subsection (a) of Section 6 of Article VII of the Illinois Constitution of 1970; and
WHEREAS, subject to said Section, a home rule unit may exercise any power and perform any function pertaining to its government and affairs for the protection of the public health, safety, morals, and welfare; and
WHEREAS, the Engineering Division believes that it is in the best interests of the City of Aurora to reject all bids received on June 27, 2018 for the Lakeview Drive Storm Sewer Repair project.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Aurora, Illinois, as follows: Hereby authorizes the Director of Purchasing to reject all bids received on June 27, 2018 for the Lakeview Drive Storm Sewer Repair project.