BOARD AGENDA MEMORANDUM
SUBJECT:Title
Accept the Work as Complete and Direct the Clerk to File the Notice of Completion of Contract and Acceptance of Work of the Santa Teresa Water Treatment Plant Air Wash Pipeline Replacement Project, under the Small Capital Improvements, Water Treatment Project, C. Overaa & Co., Contractor, Project No. 93764004, Contract No. C0662 (San Jose) (District 7). *PREVIOUSLY LISTED AS 3.12.
End
RECOMMENDATION:Recommendation
A. Accept the work on the Santa Teresa Water Treatment Plant Air Wash Pipeline Replacement Project, C. Overaa & Co., Contractor, Project No. 93764004, Contract No. C0662 as complete; and
B. Direct the Clerk of the Board to sign the Notice of Completion of Contract and Acceptance of Work and submit for recording to the Santa Clara County Clerk-Recorder.
Body
SUMMARY:
The construction contractor, C. Overaa & Co., has completed construction for the Santa Teresa Water Treatment Plant Air Wash Pipeline Replacement Project (Project).
Project Background
The Santa Teresa Water Treatment Plant (STWTP) is the largest of Santa Clara Valley Water District’s (Valley Water) three potable water treatment plants, delivering up to 100 million gallons of water per day to retailers, businesses, and residents within Valley Water’s service area. The plant supplies most of South San Jose, including Almaden Valley, Blossom Valley, and Santa Teresa. It also has ability to supplement the demands of Penitencia Water Treatment Plant when needed.
The objective of the STWTP Air Wash Pipeline Replacement Project (Project) is to extend the useful life and increase the reliability of the plant’s water filtration system. The air wash system agitates debris on the filter media, allowing the filters to be systematically cleaned in an efficient manner.
The Project scope consists of the rehabilitation, removal, and replacement of the existing air wash pipelines. This includes replacement of approximately 900 linear feet (LF) of above-ground 12-inch stainless steel pipe and relining of approximately 670 LF of underground 12-inch steel pipe at the east and west filter basins and galleries.
Previous Board Actions
On May 28, 2019, the Board adopted Resolution 19-50 setting the time and date for a public hearing on the Engineer’s Reports for the subject Project.
On June 11, 2019, the Board held a public hearing and adopted Resolution 19-51 approving the Engineer’s Report and the Project.
On July 28, 2020, the Board adopted the plans and specifications and authorized advertisement for bids for the Project.
On October 13, 2020, the Board awarded the subject contract to C. Overaa & Co. in the amount of $1,457,000 and approved a contingency fund of $145,700.
Contract Change Orders
Two (2) contract change orders totaling $17,946.00 were executed for this contract to address various issues, including unforeseen site conditions, Valley Water requested changes, and to provide credits back to the contract for value engineering.
These changes included:
A. <$27,857.00> net credit for quantity adjustments to various bid items attributed to value engineering. This change also includes the cost of work for field investigation, fabrication of new pipe elbows, and core drilling.
B. $45,803.00 for additional work required to address unforeseen conditions and Valley Water requested changes. This includes work ranging from unmarked utilities encountered, fabricating new pipe elbows, and additional surface preparation for the underground steel pipe.
Table 1 presents a summary of the construction contract and contingency amounts.
TABLE 1. SUMMARY OF CONSTRUCTION CONTRACT
AND CONTINGENCY AMOUNTS
|
|
Contract Amount |
Contingency Amount |
|
Original Contract |
$1,457,000.00 |
$145,700.00 |
|
Change Order No. 1 (staff approved) (credit) |
<$27,857.00> |
$27,857.00 |
|
Change Order No. 2 (staff approved) |
$45,803.00 |
<$45,803.00> |
|
Final Contract Amount and Remaining Contingency |
$1,474,946.00 |
$127,754.00 |
Acceptance of the Work and Recording Notice of Completion of Contract
The California Civil Code allows an owner or agent to execute a Notice of Completion of Contract after acceptance of the work by the Board. The Notice of Completion of Contract and Acceptance of Work is included in Attachment 1. The Designated Engineer has determined that the work has been completed, to the best of his knowledge, in accordance with the plans and specifications, and recommends acceptance. The Designated Engineer’s recommendation of construction acceptance is included in Attachment 2. The Project Completion Letter is included as Attachment 3. Photos of the completed Project are included in Attachment 4. The Project Delivery Process Chart is included in Attachment 5.
Construction Contract Retention
California law requires Valley Water to release contract retention in accordance with certain time frames, which will commence once the Notice of Completion is recorded with the Santa Clara County Clerk-Recorder. Interest payment on retention due to the contractor may be avoided by meeting the requisite deadlines.
Valley Water is currently withholding retention funds totaling five percent (5%) of the final contract amount ($73,747.30) in accordance with the Public Contract Code. Per the construction Contract Documents, Valley Water is required to release retention funds associated with the contract 35 days after recording the Notice of Completion of Contract and Acceptance of Work, subject to any withholds required by law or the contract.
Total Project Expenditures
As indicated in the Summary of Construction Contract and Contingency Amounts (Table 1), the original contract amount of $1,457,000.00 has been increased by $17,946.00 in approved change orders to $1,474,946.00, an increase of approximately 1.23 percent (1.23%).
ENVIRONMENTAL JUSTICE IMPACT:
There are no Environmental Justice impacts associated with this item.
FINANCIAL IMPACT:
The Santa Teresa Water Treatment Plant Air Wash Pipeline Replacement Project, under the Small Capital Improvements, Water Treatment Project, Project No. 93764004, is included in the Five-Year 2021-2025 Capital Improvement Program (CIP) and in the FY 2021-2022 Board-approved budget. Total financial costs were detailed in previous sections of this agenda memorandum. No additional funding is recommended.
CEQA:
The recommended action does not constitute a project under CEQA because it does not have a potential for resulting in direct or reasonably foreseeable indirect physical change in the environment.
ATTACHMENTS:
Attachment 1: Notice of Completion and Acceptance of Work
Attachment 2: Construction Contract Acceptance
Attachment 3: Project Completion Letter
Attachment 4: Construction Photos
Attachment 5: Project Delivery Process Chart
UNCLASSIFIED MANAGER:Manager
Emmanuel Aryee, 408-630-3074