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Title
Change Order/Amendment No.2 with Jackson Construction LTD for I-30 Frontage Road Utility Relocations (from NW 7th St. to Belt Line Rd.) in the amount of $10,960
Presenter
Ron McCuller, Director of Public Works and Romin Khavari, City Engineer
Recommended Action
Approve
Analysis
On Tuesday, April 5, 2016 the City of Grand Prairie approved a construction contract with Jackson Construction in the total amount of $2,722,734.00 for I-30 Frontage Road Utility Relocations from NW 7th Street to Belt Line Road. This contract amount included the bid of $2,593,080.00 and a 5 percent contract contingency of $129,654.00
This project was identified in order for the Texas Department of Transportation to construct a three lane service road for eastbound traffic in the area between NW 7th Street and Belt Line Road and includes construction of 2,947 linear feet of 24-inch water line, 717 linear feet of 30-inch water line, 30 linear feet of 36-inch water line, various water line appurtenances such as valves, 616 linear feet of 8-inch PVC sanitary sewer, 51 linear feet of 12-inch PVC sanitary sewer, 142 linear feet of 27-inch PVC sanitary sewer, 6 new sanitary sewer manholes, and 83,400 cubic yards of general site excavation to lower the hill where a billboard is presently located adjacent to Interstate 30.
The Current proposed Change Order No. 2 in the amount of $10,960 provides for a 20-foot bore under an existing Oncor power pole guy wire support. This 20-foot section was originally designed as an open trench installation, but with Oncor had to delay the relocation of their existing overhead electric facilities due to delays in TxDOT’s acquisition of the required right-of-way. Therefore, in order to keep the City’s utility relocations on schedule, it was recommended by the contractor and engineer to bore this short section under the existing guy wire support.
Change Order No. 1 approved by the City on August 25, 2016 in the total amount of $46,389.85 provided for a line pressure stop on the City’s existing 30-inch water transmission line just east of the project area in order to allow the contractor to tie the new 24-inch and 30-inch water lines into the existing water transmission system without having to drain a significant portion of the existing 30-inch water line. This allowed the contractor to make the tie-in connections and get the system back online much more quickly than if the existing 30-inch water line had been drained in order to make the connections.
Construction of this project is scheduled to be completed on or before January 31, 2017.
Financial Consideration
State statutes require City Council approval of a change order when the cumulative cost of this change order exceeds $50,000. With approval of this change order, the City Manager will be able to approve the change order to a cumulative value of $50,000 without additional Council approval. Also, the City, as an owner, reserves the right to increase the amount of the work to be performed in a given construction contract by an amount not to exceed twenty-five (25%) percent of the original bid. The amount of this contract is $2,593,080 and the 25% value of this contract is $648,270.
Funding in the total amount of $10,960 is available in Water Capital Projects Fund (500592) WO #01509103 (I-30 Service Roads WTER) 68540 Project Contingency in C16107