02.07.2011 - Village of Deerfield

REQUEST FOR BOARD ACTION
Agenda Item: 11-20
Subject: Approval of Wastewater Reclamation Facility Improvement Project Change Order No. 1
Action Requested: Authorize Change Order No. 1 (Electric Service Entrance Allowance) $19,093
Originated By: Director of Public Works and Engineering
Referred To: Mayor and Board of Trustees
Summary of Background and Reason for Request:
The Wastewater Reclamation Facility (WRF) has substantial electrical requirements and is currently served by a large
480 volt transformer. These facilities are on the east side of the property and are in conflict with the new aeration tank.
Commonwealth Edison (ComEd) has designed a new transformer and feed for the proposed improvements. Their
preliminary construction cost estimate was $30,000. An allowance for this work was included in the contract
specifications. The ComEd information was refined and updated in mid 2010 with a revised construction cost of $43,500.
That revised cost was not reflected in the final contract documents and is the prices for this necessary work that must be
performed by ComEd.
JJ Henderson, ComEd, Strand Associates and Village personnel have conducted on site meetings to locate underground
electric facilities and evaluate the actual impacts of construction. It has been determined that additional facilities will
need to be moved to protect them from damage. The existing primary conductors to the transformer in the public works
storage yard will be compromised by the over dig for the aeration basin construction. These conductors have to be
relocated or that transformer has to be fed from an alternative direction. The preferred and less expensive alternative is to
re-feed the transformer from the new nearby sectionalizer ($5,593.14) to be installed for the WRF project.
ComEd has submitted their full documentation to the Village for review and approval. This includes the Electric
Facilities Service Agreement with an Installation Charge of $49,093.14. This includes both the WRF work and the
recently identified storage yard transformer feed. This payment will be made by the contractor after authorization from
the Village. The contractor’s allowance for the work was $30,000. We request authorization to increase this allowance
for payment to ComEd by the amount of $19,093.14.
Strand Associates has reviewed all the materials and prices submitted and found them to be reasonable and
accurate.
The Director of Public Works and Engineering recommends that the Mayor and Board of Trustees authorize the increase
in the Electric Service Entrance Allowance, increasing the total contract amount from the base bid of $29,450,000 to
$29,469,093.14.
Reports and Documents Attached:
Letter from Strand Recommending Approval of Change Order #1
Date Referred to Board: February 7, 2011
Action Taken: __________________________________________