Title
Consider a resolution authorizing the Mayor to execute Quantity Adjustment/Change Order No. 5 with Thalle Construction Co. Inc. for the BCRWWS - East Plant Expansion to 30 million gallons per day project.
Body
The Brushy Creek Regional Wastewater System (BCRWWS) East Plant Expansion to 30 Million Gallons per Day (MGD) is a regional project with Round Rock along with the other owners of the regional system including Austin, Cedar Park, and Leander. Leander bought into the treatment ownership with their participation in this project last year. The percentage participation by each City is included below.
The BCRWWS East Plant Expansion to 30 MGD project includes an increase in treatment capacity, improvements to the treatment process, and other required plant improvements including new headworks and odor control. The process change allows the plant to more reliably achieve more stringent permit limits set by the Texas Commission on Environmental Quality (TCEQ). Thalle Construction was awarded the contract by City Council on April 9, 2020 and work started June 1, 2020.
This item is for the approval of Change Order No. 5 with Thalle Construction. Change Order No. 5 includes two items: 1) additional canopies to protect electrical equipment and 2) costs associated with re-sequencing the work to minimize the amount of treatment capacity out of service during construction. The total cost of Change Order No. 5 is $1,311,118.57. Round Rock’s portion of the change order is $157,334.23 based on 12.0% cost allocation in the 30 MGD Expansion project. This change order also includes the addition of 96 days, bringing the total contract time to 1,304 calendar days.
Percentage participation in this project and total for this change order by each City:
Round Rock 12.0% $ 157,334.23
Austin 24.7% $ 323,846.29
Cedar Park 21.0% $ 275,334.90
Leander 42.3% $ 554,603.16
Total 100.0% $ 1,311,118.57
Original award $ 107,351,712.60
Change Order No. 1 $ 615,302.02
Change Order No. 2 $ 83,266.99
Change Order No. 3 $ 671,238.89
Change Order No. 4 $ 1,179,308.24
Change Order No. 5 $ 1,311,118.57
Total Contract Amount $ 111,211,947.31
Cost: $1,311,118.57
Source of Funds: Regional Wastewater Projects