Title
Resolution to Approve Amendment No. 2 to the Professional Services Agreement with Geosyntec Consultants of Michigan, Inc. for Hydroelectric Dams - FERC Title 18 Part 12, Subpart D (Part 12D) Inspections and Other Engineering Services ($125,000.00 Amendment, $340,700.00 Total Contract)
Memorandum
This memorandum and resolution requests approval of Amendment No. 2 to the professional services agreement for professional engineering services with Geosyntec Consultants of Michigan, Inc (Geosyntec) in the amount of $125,000.00. Council approved a professional services agreement for $100,000.00 with Geosyntec in December 2022 as part of Resolution No. 22-333 and Amendment No. 1 in September 2023 as part of Resolution 23-342 for $115,700.00.
The Barton Dam, including the concrete spillway section and powerhouse, is critical infrastructure, impounding and supplying 85% of the City's raw drinking water. The dam is over 110 years old and experiencing some significant concrete deterioration, which has been identified by the Federal Energy Regulatory Commission (FERC) in their last annual safety inspection. FERC is the federal regulator for the dams and the City is required to satisfy FERC requests in order to maintain licensure.
The City is seeking to amend the professional services agreement with Geosyntec to accommodate additional professional engineering service needs that have arisen since the start of Geosyntec's work. Throughout various meetings held as part of the original project scope, FERC requested additional engineering efforts, including the development of a concrete repair plan for the spillway and powerhouse at Barton Dam that was not in Geosyntec's original scope. Field investigations are required to make condition assessments to identify critical elements of the concrete structure in need of repair to address potential failure modes and maintain overall stability. The project will include structural analyses, recommendations and prioritization o...
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