From
Chris Agnew
Title
Change Order No. 3 with McMahon Contracting, L.P. for Drainage Improvements (#Y1118): Section 1-Cottonwood Creek Culvert Improvements at Great Southwest Parkway; Section 2 Oakdale Road Culvert Improvements in the total amount of ($160,330.25)
Presenter
Romin Khavari, City Engineer and Ron McCuller, Director of Public Works
Recommended Action
Approve
Analysis
On Tuesday, August 1, 2017 the City of Grand Prairie awarded a construction contract to McMahon Contracting, L.P. in the amount of $1,320,917.08 for drainage improvements Section 1-Cottonwood Creek Culvert Improvements at Great Southwest Parkway and Section 2 Oakdale Road Culvert Improvements.
This proposed change order No. 3 will decrease the Section 1 contract amount for deletion of the contract 16” water line relocation improvements at Great Southwest Parkway and South Fork Cottonwood Creek in the amount of $109,294.73 in response to the redesign of the culvert headwall structure to clear the 16” water Line and discovered AT&T duct bank. The additional construction cost due to the redesigned headwall was approved in change order #1 to the contract. This proposed change order No. 3 will also decrease the Section 2 contract amount for deletion of temporary asphalt pavement widening for detours on Oakdale Road in the amount of $51,035.52 which resulted with the approval of the contractor’s traffic control plan to close Oakdale to traffic in phases with the proposed expedited construction schedule. The total change order amount is a contract decrease of $160,330.25 for a revised contract amount of $1,184,909.23.
Change order #1 was approved on October 20, 2017 in the amount of $23,722.40 for 24-inch drill shafts and counter support work for a revised contract amount of $1,344,639.48.
Change order #2 was approved on October 20, 2017 in the amount of $600.00 for additional traffic control signage at the request of the businesses along Great Southwest Parkway for a revised contract amount of $1,345,329.48.
Construction completion of the project is to remain as July 24, 2018.
Financial Consideration
No financial consideration needed for this change order request. Current funding is in the Storm Drainage Capital Projects Fund (401592), WO #01204601-03 and WO #01304703.