BOARD AGENDA MEMORANDUM
SUBJECT:
Title
Adopt Plans and Specifications and Authorize Advertisement for Bids for the Bolsa Road Fish Passage Improvement Project, Project No. 26044002, Contract No. C0652, (Gilroy) (District 1).
End
RECOMMENDATION:
Recommendation
A. Adopt Plans and Specifications and authorize advertisement for bids for construction of the Bolsa Road Fish Passage Improvement Project, per the Notice to Bidders; and
B. Authorize the Designated Engineer to issue addenda, as necessary, during the bidding process.
Body
SUMMARY:
The purpose of the Bolsa Road Fish Passage Improvement Project (Project) is to restore fish passage at the Union Pacific Railroad (UPRR) crossing of Uvas Creek to allow steelhead and other aquatic organisms to move freely between the lower and upper reaches of the creek. This is being accomplished through development of a geomorphically designed project, restoring the creek invert to historic elevation and thereby providing fish passage. Since the Project meets both fish passage and geomorphic restoration goals, it will be funded by both Safe Clean Water Project D4 - Fish Habitat and Passage Improvement Project as well as D6 - Creek Restoration and Stabilization Project.
Specific outcomes of the Project are:
1. Restore upstream steelhead passage at the UPRR crossing, providing access to spawning grounds in the upper reaches of the watershed.
2. Restore stability and stream function and prevent incision for 1,700 feet of Uvas Creek.
The Project consists of a series of roughened riffles with pools and glides in between. Its overall length is 1,500 feet at an overall slope of 0.5 percent to overcome 71/2 vertical feet. The riffles are 40 feet long and drop 1 foot at approximately 4 percent slope. Downstream of each riffle is a pool and glide that has a length of 52 to 54 feet. The pool bottoms are 2 feet below the next downstream riffle crest. In total, there are eleven riffles and nine pools. Two riffles downstr...
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