Fiscal Note
The proposed resolution authorizes an amendment to the existing contract (#9156) for the Wingra Proper Watershed Study for additional engineering services at a cost of $9,386. The original contract was approved via RES-22-00335 on May 10, 2022 (Legistar #70938), for a total amount of $195,558 and increased via Amendment 1 to $198,312. This amendment (#4) increases the total authorization to $207,698 and extends the contract until September 30, 2026.
Funding is available in the 2026 Adopted Stormwater Utility Operating Budget to support flood studies (13323-84-200-84000). No additional appropriation is required.
Title
Authorizing the Mayor and the City Clerk to execute Amendment No. 4 to the existing Purchase of Services contract between the City of Madison and Brown and Caldwell for engineering services for the Wingra Proper Watershed Study. (District 5, District 10, District 11, District 13, District 14)
Body
The City of Madison Engineering Division is conducting watershed and flood studies as a result of extreme rain events over the past several years. The City entered into an agreement with Brown and Caldwell for engineering services related to flooding evaluation in the Wingra Proper Watershed (RES-22-00335). The City Engineer authorized additional engineering services and recommend that they be undertaken by Brown and Caldwell for the Wingra Proper Watershed as defined below:
1. Berm: An existing berm exists to create a dry pond within the UW-Arboretum south of Martin Street. There is currently a gap at the southeast corner of the pond between the dry pond and the nearby North Arboretum wet pond. Currently during large storm events water bypasses the berm and impacts the effectiveness of alternatives to reduce flooding in the Lake Forest neighborhood. As part of this analysis BC will simulate an extension of the berm to fill this gap.
2. Schmidt Pond Outfall Pipe: As an option to relying on the outlet channel from the pond, an alternative wi...
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