Discuss, consider, and take appropriate action on Contract Amendment No. 3 to RFQ2572 Flood Plain Maps Update (Atlas 14 – Salado Creek Basin Study & Technical Review) contract between Williamson County and Halff Associates, Inc. relating to the Texas Water Development Board (TWDB) Agreement. Project: P382. Funding source: CIP/Road and Bridge.

Halff Associates, Inc. Contract Amendment No. 3 increases the contract compensation cap by $1,618,000.00, increasing it from $3,740,000.00 to $5,358,000.00. This will allow for the execution of Supplemental No. 2 to Work Authorization No. 4 in the amount of $800,000.00 for the completion of the H&H study area analysis and mapping of the Salado and Berry Creek watershed and extends the termination date to December 31, 2025, a Supplemental No. 3 to Work Authorization No. 2 extending the termination date to December 31, 2025, to allow for continued Technical Program Management, and a future Work Authorization No. 5 to address LiDAR improvements.