BOARD AGENDA MEMORANDUM
SUBJECT:
Title
Adopt Plans and Specifications and Authorize Advertisement for Bids for Construction of the Cunningham Flood Detention Facility Certification Project, Project No. 40264011, Contract No. C0641 (San Jose) (District 1).
End
RECOMMENDATION:
Recommendation
A. Adopt Plans and Specifications and Authorize Advertisement for Bids for Construction of the Cunningham Flood Detention Facility Certification Project per the Notice to Bidders; and
B. Authorize the Designated Engineer to issue addenda, as necessary, during the bidding process.
Body
SUMMARY:
Project Background
The Cunningham Flood Detention Facility Certification Project (Project) is situated within Lake Cunningham Regional Park in the southeast section of San Jose and is just upstream of the District's Lower Silver Creek Flood Protection Project. The park was designed and constructed in accordance with the park's Master Plan originally developed in 1976 by the City of San Jose (City) to function dually as a recreational and flood detention facility. Lower Silver, Flint, and Ruby Creeks flow along the perimeter of the park (Project Location Map, Attachment 2). In 1978, the District entered into a Joint Use Agreement with the City to develop a joint recreational-flood detention facility at the park site.
The park area functions as a detention basin and attenuates the 100-year flood peak flow from upstream. However, the detention facility does not have sufficient freeboard for it to be certified by the Federal Emergency Management Agency (FEMA). In order to meet this objective, the District is proposing to raise the existing levee ranging from 0 to 4 feet high along Capitol Expressway and Cunningham Avenue and adjacent to Lower Silver Creek, and to construct a floodwall ranging from 2 to 4 feet in height along Cunningham Avenue and Flint Creek. These improvements are necessary to satisfy FEMA freeboard requirements for flood protection facilities. Other project ...
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