TO: Members of the Governing Board
FROM: Christopher Silke - District Engineer
REPORT BY: Christopher Silke - District Engineer
SUBJECT: Approval of Plans and Specifications and Authorization to Advertise for Bids for Transfer Pumping Equipment and Storage Project, LB 25-01
RECOMMENDATION
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Approve plans and specifications for the “Transfer Pumping Equipment and Storage Project,” LB 25-01 and authorization to advertise for sealed bids and opening of the bids at a time, date, and location to be published by the District Engineer pursuant to Section 20150.8 of the Public Contract Code. (No Fiscal Impact; Discretionary)
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BACKGROUND
The District filed an application for public water system funding assistance through the Department of Water Resources (DWR) Small Community Drought Relief Program (SCDRP) in November 2021 seeking a total of $637,000 to cover costs associated with the District’s Emergency Drought Response. The project implements groundwater and sub-channel creek supply feasibility investigations and strengthens the system’s ability to sustain water supply during critically dry years. Project elements are listed below; all but project elements in No. 3 are complete.
1. The installation of a seasonal floating intake structure to compensate for declining water levels in Putah Creek due to severe drought;
2. Extending the water supply intake to a nearby alluvium gravel bar and replacing a dilapidated Concrete Masonry Unit (CMU) Intake Utility Building with a new building and a Potassium Permanganate chemical treatment process for pre-treatment of raw water;
3. Purchase and acquisition of portable pumping equipment, hoses and a tank placed at the water supply intake pool to carry out temporary water transfers within the Putah Creek basin from upstream pools to the stationary intake; and
4. Conduct hydrogeologic explorations for a potential alluvial or fractured rock deep well supply in proximity to the Berryessa Estates water service area that can satisfy the community’s maximum daily water demand.
DWR SCDRP Funding Agreement No. 240301B was issued to the District in June 2023 and formally executed on August 28, 2023. Terms of the Funding Agreement allow for eligible project reimbursement expenses dating back to April 29, 2022 through December 31, 2024. The agreement was formally extended and all work must now be completed by December 31, 2025.
Design plans and specifications are now complete for project element No. 3 - procurement of a portable diesel engine powered pump, hoses and appurtenances for temporary spring feed pool water transfers to a polyethylene tank placed in proximity to the water supply intake, and the procurement and installation of a new steel storage container to store the acquired equipment until needed. Engineer’s estimate for the final project element of DWR Funding Grant is $85,000.
Requested Actions:
1. Approve plans and specifications for the “Transfer Pumping Equipment and Storage Project,” LB 25-01 and authorization to advertise for sealed bids and opening of the bids at a time, date, and location to be published by the District Engineer.
FISCAL & STRATEGIC PLAN IMPACT
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Is there a Fiscal Impact? |
No |
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Is it currently budgeted? |
Yes |
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Where is it budgeted? |
Fund 5220, Subdivision 5220500, Project 24019 |
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Is it Mandatory or Discretionary? |
Discretionary |
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Discretionary Justification: |
Approval of plans and specifications and authorization to advertise for sealed bids is necessary prior to the construction phase. |
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Is the general fund affected? |
No |
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Future fiscal impact: |
None |
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Consequences if not approved: |
District would forfeit grant money awarded by Department of Water Resources to support the project. |
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Additional Information |
Staff will return to the Board for an award recommendation of a construction contract after bids are opened, tabulated and reviewed for conformance with qualifications. |
ENVIRONMENTAL IMPACT
Consideration and possible adoption of a Categorical Exemption Class 1: It has been determined that this type of project does not have a significant effect on the environment and is exempt from the California Environmental Quality Act. [See Class 1 (“Existing Facilities”) which may be found in the guidelines for the implementation of the California Environmental Quality Act at 14 CCR §15301; see also Napa County’s Local Procedures for Implementing the California Environmental Quality Act, Appendix B.]