CC - Agendas - City Council - REGULAR - 7/23/2013

Home

Agenda Item: Approval of Change Order No. 11, City Contract No. 2012-183 A11, with A. Miner Contracting, Inc., for construction of the Runway 21 L-3R Runway Safety Area Improvement Project in the amount of $26,272.52 change Urder #4 was for the removal and replacement of the REIL power equipment from an existing foundation to new foundations. This issue was not identified during design but was discovered after the start of construction. This change order resulted in a net increase to the contract in the amount of $4,490.48. Because this change order was less than $10,000 it was approved administratively. Change Order #5 was for the replacement of airfield signage bases during the installation of the paved runway shoulders. The scope of the project included the construction of runway shoulders, requiring changes at existing sign base locations. During the design phase it was estimated that two (2) existing bases would have to be replaced rather than adjusted, however, the exact number could not be determined without excavating all of them. The contractor ultimately replaced sixteen (16) sign bases at a cost of $52,031.25. The line item was originally bid at $9,200 resulting in a net increase to the contract in the amount of $36,781.25. Change Order #6 was for the installation of reverse thrust blocks needed to plug the termination ends of an existing 8-inch city waterline in two separate locations. This item was identified and requested by the City Water Department after the design was completed and the construction contract has been awarded. This change order resulted in a net increase to the contract in the amount of $6,000. Because this change order was less than $10,000 it was approved administratively. Change Order #8 was for the installation of two (2) new vehicle gates in the new perimeter security fence. These gates are needed by FAA maintenance personnel to access the FAA's navigational aid equipment, however, the original project plans did not call for the installation of these gates. This change order is a net increase to the contract in the amount of $2,405.79. Because this change order was less than $10,000 it was approved administratively. Change Order #7 was for the placement of controlled low strength material (CLSM), in lieu of granular backfill, within the removal limits of existing storm drain pipes across Taxiway Delta. The Engineer specified the use of CLSM for this taxiway crossing in the approved plans, however, the Technical Specifications document which take precedence over the Plans, allowed the Contractor to bid alternate materials. The Contractor was entitled to the difference in the cost between the two materials for a net increase to the contract in the amount of $12,231.50. Change Order #9 was for a required modification to the Airport Lighting Control and Monitoring System (ALCMS) and for the placement of additional CLSM in storm drain excavations across Runway 12-30. The modification of the ALCMS was included in the contract as an allowance item; the actual cost of the work was not known when the bid documents were prepared. The difference between the contract allowance and the actual cost was $18,889.57. This work is required for the existing ALCMS to operate the new lighting and electrical equipment installed during this project. 2