Title
Resolution to Approve Amendment No. 4 to the Professional Services Agreement with NTH Consultants, Ltd. for the Barton Dam Right Embankment Remediation (Amendment Amount $1,700,000.00; Total Contract Amount $2,871,287.77)
Memorandum
This memorandum and resolution requests approval of Amendment No. 4 to the Professional Services Agreement with NTH Consultants, Ltd (NTH) for engineering services the Barton Dam Right Embankment Remediation Project in the amount of $1,700,000.00. Council approved a Professional Services Agreement with NTH for $589,405.30 in December 2021 as part of Resolution 21-452; Amendment No. 1 in October 2022 as part of Resolution 22-332 for $214,102.47; Amendment No. 2 in September 2023 as part of Resolution 23-341 for $140,080.00; and Amendment No. 3 in June 2024 as part of Resolution 24-191 for $227,700.00.
The City is seeking to amend the Professional Services Agreement with NTH to accommodate professional construction engineering services associated with the Barton Dam Right Embankment Remediation Project. Barton Dam is regulated by the Federal Energy Regulatory Commission (FERC) and the embankment is currently listed as "Poor" in the National Inventory of Dams database. The project will consist of the construction of a stabilizing berm on the downstream slope of the right embankment to address seepage and stability concerns as well as other ancillary work to develop site staging, improve site access, and remediate other critical items at the dam such as removing the existing reverse filter and filling the existing toe ditch pond as required by FERC. FERC is the federal regulator for the dam and the City is required to proceed with the construction of this project in order to maintain licensure.
Amendment No. 4 is necessary to cover the construction phase work efforts including construction engineering, construction administration, construction oversight and testing services, and related activities. NTH was the engineer of record...
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