AGENDA CAPTION:
Title
Consider approval of Resolution 2021-49R, approving a Change in Service to the agreement with Recreation Engineering and Planning, Inc. for additional design and construction services for the Rio Vista Falls Maintenance Project in the estimated amount of $74,000.00; authorizing the City Manager or his designee to execute the appropriate documents to implement the Change in Service; and declaring an effective date.
Body
Meeting date: March 2, 2021
Department: Engineering and Capital Improvements, Laurie Moyer, Director (by Lynda Williams, Purchasing Manager)
Amount & Source of Funding
Funds Required: $74,000.00
Account Number: C743
Funds Available: Click or tap here to enter text.
Account Name: Rio Vista Falls Repair
Fiscal Note:
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Background Information:
CIS#3 is requested since there has been a maintenance repair strategy change requiring additional design and construction administration services. The new maintenance repair strategy is larger in scope and will be more robust. CIS#2 reallocated previously allocated construction administration services as design services and CIS#3 is a request for $74,000.00 to fully cover construction administration and additional permitting services.
Rio Vista Falls has experienced consistent strong currents and multiple flood events since 2006 without major maintenance. In several locations underwater voids or undercuts have formed along the instream structures and banks due to the river’s strong currents and require maintenance repair. The engineering consultant, Recreation Engineering and Planning, Inc. (REP), who designed the original project, is also designing the proposed maintenance repairs and will perform construction engineering services.
An early repair strategy was identified to address the voids/undercuts that allowed for minimal impact to the river. However, after further investigation of the voids, it was determined this strategy would be difficult to implement and would not provide the structural longevity needed. A new design strategy was developed consisting of a more robust maintenance repair. While this strategy has a greater impact on the river, requiring dewatering and construction equipment in the dewatered area, the strategy allows for thoroughly addressing voids with grout and stone, rebuilding banks where necessary, and providing additional anchoring and erosion preventative armoring.
A more robust repair has also been identified for the undermining that has occurred at Dog Beach.
Due to the design strategy change and the increased scope of the more robust solution, additional engineering services are required.
Council Committee, Board/Commission Action:
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Alternatives:
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Recommendation:
Staff recommends approval of change in service #3 to contract 219-207 with Recreation Engineering and Planning for additional engineering services in the amount of $74,000.00 for a total contract amount of $167,000.00.