STRATEGIC PRIORITY: Transportation & Infrastructure
AGENDA DATE: February 8, 2023
COUNCIL DISTRICT(S): 12, 13
DEPARTMENT: Water Utilities Department
EXECUTIVE: Kimberly Bizor Tolbert
______________________________________________________________________
SUBJECT
Title
Authorize Supplemental Agreement No. 2 to the professional services contract with Halff Associates, Inc. for additional engineering services related to storm drainage improvements at three locations (list attached to the Agenda Information Sheet) - Not to exceed $955,776.65, from $462,327.00 to $1,418,103.65 - Financing: Flood Control (D) Fund (2017 General Obligation Bond Funds)
Body
BACKGROUND
On May 22, 2019, City Council authorized a contract with Halff Associates, Inc. to provide engineering services for storm drainage improvements at seven locations including the 9700 Block of Forestridge Drive & 9600 Block of Chiswell Road, Hughes Lane at Kalani Place, 7028 Creek Bend Road, 16209 Meandering Way, 5910 Tree Shadow Trail, Rexford Drive at Shorecrest Drive, and 3500 Versailles Avenue. Each of these locations required improvements to provide adequate capacity for the conveyance of storm water flows and to address localized flooding during storm events.
On January 14, 2021, Administrative Action No. 21-5218 authorized Supplemental Agreement No. 1 with Halff Associates, Inc. for additional engineering work required to implement drainage improvements at Hughes Lane that are now complete.
During the evaluation and preliminary engineering phase of the project, Halff Associates, Inc. and Dallas Water Utilities determined that additional engineering services beyond the scope of the original contract would be necessary for three locations. The original scope of work at 16209 Meandering Way, 5910 Tree Shadow Trail, and 3500 Versailles Avenue was not adequate to address flooding due to downstream conditions and capacity restrictions.
This action will authorize Supplemental Agreement No. 2 with Half...
Click here for full text