Administrative
Report
H.12., File # 23-6517 Meeting Date: 8/15/2023
To: MAYOR AND CITY COUNCIL
From: TED SEMAAN, PUBLIC WORKS DIRECTOR
TITLE
ADOPT BY TITLE ONLY RESOLUTION NO. CC-2308-077, A RESOLUTION OF THE CITY
COUNCIL OF THE CITY OF REDONDO BEACH, CALIFORNIA, AWARDING A CONTRACT TO MANSON CONSTRUCTION CO., A WASHINGTON CORPORATION, IN THE AMOUNT OF $2,992,000 FOR THE KING HARBOR MAINTENANCE DREDGING PROJECT, JOB NO. 70660
EXECUTIVE SUMMARY
Adoption of the Resolution awarding a contract to Manson Construction Co. in the amount of $2,992,000 for the King Harbor Maintenance Dredging Project, Job No. 70660 (Project) will allow the City to initiate construction of a long-awaited maintenance dredging project to restore King Harbor’s navigational depth to the original design specifications and provide for safe passage of vessels by eliminating the accumulated shoals within the Harbor. The dredging project will remove approximately 62,000 cubic yards of material from two areas within King Harbor. All dredged material will be placed outside of King Harbor, as required by the dredging permit, at an approved US Army Corps of Engineers offshore ocean depository located offshore from Avenue B in Redondo Beach.
The disposal of spoils was coordinated with the Dredged Material Management Team (DMMT), which is a consortium of State, Federal and local agencies that involves an environmental review and public input process. A qualified inspector will be present during the dredging to ensure water quality permit requirements are met.
On June 6, 2023, the City Council approved the Plans and Specifications for the King Harbor Maintenance Dredging Project, and authorized the City Clerk to advertise for competitive bids. On July 20, 2023, two bids were received and publicly opened in the City Clerk’s office. After reviewing the bids, Manson Construction Co. with a bid of $2,992,000 was found to be the lowest responsible bidder. The dredging must be performed between January and June 2024 and is expected to take an estimated 2-3 months to complete. The actual start date is yet to be determined and will depend on contractor availability, weather and other project factors.
BACKGROUND
Over the past 30 years, King Harbor has been dredged on two occasions. The first dredging was done by the City in 1989 to address significant shoaling that occurred in the aftermath of the 1988 storm and the second dredging was conducted in 2005. The primary reason the Harbor requires periodic dredging is that the natural flow of beach sand is from north to south and as the sand moves southward it migrates through the breakwater and into the Harbor. The breakwater, designed by the Army Corps of Engineers to absorb wave action, is porous which allows significant amounts of sand into the Harbor where it accumulates at various locations. The porous construction also provides tidal
H.12., File # 23-6517 Meeting Date: 8/15/2023
into the Harbor where it accumulates at various locations. The porous construction also provides tidal flushing (in and out) which help keeps the Harbor clean and clear.
The Harbor is currently experiencing significant shoaling and requires dredging in order to maintain navigability and to help ensure boater safety. The planned project will return King Harbor’s navigational depth to the original design depth and will provide safe vessel access by removing shoals that have accumulated. The project includes the dredging of approximately 62,000 cubic yards of material from two areas within King Harbor. The first area to be dredged is the shoal fronting the norther portion of King Harbor near the North Breakwater and the second area to be dredged is the shoal fronting the inner portion of the South Breakwater at the entrance to Basin 3.
The approximately 62,000 cubic yards of dredged material will be placed outside of King Harbor, at an approved US Army Corps of Engineers nearshore placement site generally located across from Avenue B in Redondo Beach. No dredged material will be placed inside King Harbor. The planned location was reviewed and recommended by the City’s Harbor Commission.
A qualified inspector will be present during the dredging to ensure water quality permit requirements are met. The City obtained the required U.S. Army Corps of Engineers Permit SPL-2019-00541 and Los Angeles Regional Water Quality Control Board Permit WDID 4WQC40120081. The Army Corps Permit included approval from the Environmental Protection Agency, the Department of Fish and Game, the California Coastal Commission, US Fish & Wildlife, and the State Lands Commission.
On June 6, 2023, the City Council approved the Plans and Specifications for the King Harbor Maintenance Dredging Project, and authorized the City Clerk to advertise for competitive bids. On July 20, 2023, 2 bids were received and publicly opened in the City Clerk’s office. After reviewing the bids, Manson Construction Co. with a bid of $2,992,000, was found to be the lowest responsible bidder. The dredging will be completed between January and June 2024 and is expected to take an estimated 2-3 months to complete.
As awarded, the project will be performed during the City’s standard construction hours from 7 A.M. to 6 P.M. Staff will be discussing options with the contractor to shorten the overall duration of the project by extending the work day into the evening. This will not impact the cost of the project, but may provide the contractor a way to complete the work in a shorter period of time, which would be advantageous for harbor users.
COORDINATION
This project has been fully coordinated with the Public Works Engineering Division. The City Attorney’s Office approved the resolution as to form. Disposal of spoils was coordinated with the Dredged Material Management Team (DMMT), which is a consortium of State, Federal and local agencies that involves an environmental review and public input process. The Project was reviewed and supported by the City’s Harbor Commission.
FISCAL IMPACT
The City’s FY 2023-24 CIP Budget for the Dredging Project includes $4,000,000 of Tideland’s Funds.
The total project cost is estimated to be $3,501,200. All residual funding will be returned to the Tidelands Fund.
H.12., File # 23-6517 Meeting Date: 8/15/2023
Funding Expenditures
Tidelands Funds FY 23-24 $4,000,000 Construction Contract $2,992,000 Contingency (10%) $ 299,200
CM & Inspection $ 150,000
Bathymetric Surveys $ 60,000
Total $4,000,000 Total $3,501,200
APPROVED BY:
Mike Witzansky, City Manager
ATTACHMENTS
· Resolution Awarding Contract to Manson Construction
· Bid Results