Title
Bid No. 2019-083 - Palos Verdes Dam Modifications & Park Improvements.
(Authorize the City Manager to finalize and execute a contract with low bidder McMahon Contracting, LP, for the Base Bid and Additive/Alternate Bid, in the amount of $1,438,565.33.)
Body
Name of Department
Public Works
Project/Budgeted Amount
$1,891,300.46
Sum of Bid/Bid Amount
$1,438,565.33
The Texas Commission of Environmental Quality (TCEQ) Dam Safety Regulations enacted in 2009 require the development of hydrologic and hydraulic information for dams including a dam breach analysis. The study for Palos Verdes Lake and Dam indicates that the dam spillway must pass 75 percent of the Probable Maximum Flood (PMF).
This project is to replace the existing rusted corrugated metal overflow with a new concrete overflow structure and to modify the emergency spillway to accommodate the required 75 percent of the PMF flows. Other project elements include the extension of a large storm sewer pipe from the downstream face of the dam to Northwest Drive to eliminate the severe erosion occurring in the park near Northwest Drive and the addition of a new parking lot which will contain approximately 20 parking spaces.
Financial Implications
The FY 2019 budget includes $1,600,000.00 from the Drainage Utility District (DUD) and $291,300.46 of 4B funds.
Recommended/Desired Action
Staff recommends award of the contract, to include the base bid, and the Additive/Alternate Bid, to low bidder, McMahon Contracting, LP.
Attachment(s)
Recommendation Letter
Bid Tabulation (Purchasing)
Location Map
Drafter
Curtis J. Cassidy, P.E.
Head of Department
Matthew Holzapfel, P.E.