Title
Recommendation to Authorize the City Manager to Execute an Agreement with Innovative Construction Solutions, in an Amount Not to Exceed $407,184, for Alameda South Shore Lagoons 3 and 5 Dredging Project, No. P.W. 09-14-49. (Public Works 310)
Body
To: Honorable Mayor and Members of the City Council
EXECUTIVE SUMMARY
The Public Works Department publicly bid the Alameda South Shore Lagoons 3 and 5 Dredging Project on January 23, 2020. The project consists of removing accumulated sediment from the corners of Lagoons 3 and 5 of the South Shore lagoon system. The Public Works Department requests the Council to authorize the City Manager to award a contract from the March 4, 2020 rebid to Innovative Construction Solutions in the amount of $407,184.
BACKGROUND
The South Shore Lagoon System was created in the 1950s, when tidelands south of Alameda Island were filled in to create the South Shore Development, thus leaving a water gap for the new lagoons. Circulation through the lagoons is provided by pumping salt water from an intake pipe in the San Francisco Bay into the westernmost lagoon, near Crown Beach. This water then travels by gravity east through the five lagoons that compose the lagoon system, and returns to the Bay via an outfall at Bayview Drive. The lagoon system serves as a recreational and aesthetic water feature for the residents of the South Shore and the Gold Coast neighborhoods, as well as providing storm water retention and treatment for the city’s storm drainage system during the rainy season. Approximately 1,000 acres (1.6 square miles) of the city land drains into the lagoons, including land from both the Gold Coast and South Shore neighborhoods. The Alameda West Lagoon Homeowners Association (AWLHOA) and Public Works Department are jointly responsible for maintaining the lagoon system.
Over the years, dirt and tree leaves have washed into the lagoons from the adjoining streets, storm drains, and the intake pipe. In 2014, the lagoon system was dredged; however, the corners of Lagoons 3 and 5 were excluded from this project because certain sampled parameters exceeded thresholds for acceptance of the material for disposal. The buildup of sediment and detritus in the corners of Lagoons 3 and 5 over the last several years have been a frequent concern for the public and the AWLHOA, who claim that these areas are too shallow, odorous, and aesthetically undesirable.
The proposed project will include mechanically dredging the lagoon corners to remove 800 cubic yards of material. The dredge spoils will be loaded into trucks and hauled to a suitable disposal site that will accept the material. The dredging is proposed to take place in May 2020 during the annual lowering of the lagoons for maintenance in order to minimize disturbance of the lagoons and lagoon water quality.
DISCUSSION
On January 23, 2020, the following bids were opened:
|
Bidder |
Location |
Bid Amount |
|
Innovative Construction Solutions |
Costa Mesa, CA |
$341,000.00 |
|
Aquatic Environments |
Benicia, CA |
$365,290.00 |
|
DK Environmental |
Lafayette, CA |
$488,600.00 |
|
Storesund Construction Services, LLC |
Kensington, CA |
$529,795.96 |
|
Dixon Marine Services, Inc. |
Inverness, CA |
$600,219.00 |
The project specifications stated that references were required with the bid. However, reference forms were inadvertently excluded from the bid solicitation package. As a result, some of the bidder’s proposals that were submitted included references, while others did not. Two bid protests were subsequently received. Subsequently, all bids for this project were rejected due to inconsistencies within the bid solicitation package. On February 3, 2020, the Public Works Department mailed letters to all bidders stating the same.
The project specifications were amended to clarify the bid requirements and then the project was rebid. To solicit the maximum number of rebids and most competitive price, plans and specifications were provided to builders’ exchanges throughout the Bay Area and published in the Alameda Sun on February 13, 2020. After the bidding period of 20 days, four contractors submitted bids, and the bids were opened on March 4, 2020. The bid results are as follows:
|
Bidder |
Location |
Bid Amount |
|
*Aquatic Environments |
Benicia, CA |
$321,398.00 |
|
Innovative Construction Solutions |
Costa Mesa, CA |
$339,320.00 |
|
*DK Environmental |
Lafayette, CA |
$498,820.00 |
|
*Dixon Marine Services, Inc. |
Inverness, CA |
$584,120.00 |
After reviewing the bids, three of the bidder’s proposals were deemed non-responsive (*). After contacting several references provided by the lowest responsive bidder, staff recommends awarding the contract to Innovated Construction Solutions for a total amount of $407,184, which includes a 20% contingency in the amount of $67,864. The contractor is not guaranteed any of the contingency and its use will be at the sole discretion of the Public Works Director for work not originally anticipated in the specification. The specification also informed the successful bidder that they shall not pay less than the prevailing rate of per diem wages as determined by the Director of the California Department of Industrial Relations. Construction of this project is anticipated to commence on May 4, 2020 and is expected to be complete by May 29, 2020. A copy of the contract is attached as Exhibit 1.
ALTERNATIVES
• Award the contract as recommended.
• The Council may opt to not award this contract and give other direction to staff. This could result in complaints from north and south shore lagoon homeowners as well as further sediment and detritus accumulation in the corners of these two lagoons. This may result in increased dredging cost in the future when the work is performed at a later date and there is a greater volume to remove.
FINANCIAL IMPACT
The project is budgeted in the Public Works Department’s account for Capital Improvement Program (CIP) (Project No. 96007) under Lagoon Maintenance. In Fiscal Year 2019-21, $400,000 was appropriated to lagoon maintenance from the General Fund and $50,000 from the AWLHOA to lagoon maintenance under Project No. 96007. Prior fiscal years’ funds for lagoon maintenance were re-appropriated to Project No. 96007 at the March 3, 2020, City Council meeting to increase total existing lagoon maintenance funds to approximately $883,000. The project cost will be split between the City and the AWLHOA at a ratio of 70% City /30% AWLHOA in conformance with the current South Shore Lagoon System maintenance agreement.
MUNICIPAL CODE/POLICY DOCUMENT CROSS REFERENCE
This action does not affect the Alameda Municipal Code.
ENVIRONMENTAL REVIEW
The existing California Environmental Quality Act (CEQA) Mitigated Negative Declaration (MND) from the 2014 dredging project will be used for this project. The US Army Corps of Engineers Nationwide Permit and California Regional Water Quality Control Board 401 Water Quality Certification have already been issued for this project.
CLIMATE IMPACTS
Construction materials and equipment will temporarily increase greenhouse gas emissions during construction. At this time, we lack the tools to quantify the estimated emissions.
RECOMMENDATION
Authorize the City Manager to execute an agreement with Innovative Construction Solutions, in an amount not to exceed $407,184, for Alameda South Shore Lagoons 3 and 5 Dredging Project.
CITY MANAGER RECOMMENDATION
The City Manager recommends authorization to execute an agreement with Innovative Construction Solutions, in an amount not to exceed $407,184 for Lagoons 3 and 5 Dredging Project.
Respectfully submitted,
Liam Garland, Public Works Director
By,
Andrew Nowacki, Associate Engineer
Financial Impact section reviewed,
Nancy Bronstein, Human Resources Director/Interim Finance Director
Exhibit:
1. Contract
cc: Eric Levitt, City Manager