TO: Napa-Vallejo Waste Management Authority Board of Directors
FROM: Chris Celsi, Executive Director
REPORT BY: Chris Celsi, Executive Director
SUBJECT: Agreement No. 2025-03 American Canyon Leachate Line Improvement Project No. 25801
RECOMMENDATION
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REQUESTED ACTION: Executive Director requests the following actions related to the American Canyon Leachate Line Improvement - Project No. 25801
1. Approve the Plans and Specifications for American Canyon Leachate Line Improvement Project;
2. Award Construction Contract No. 2025-03 for American Canyon Leachate Line Improvement Project to the lowest bidder, Benchmark Civil Construction, Inc. in the amount of $280,480.42;
3. Authorize the Chair to sign Construction Contract 2025-03 with Benchmark Civil Construction, Inc;
4. Authorize the Executive Director to issue change orders to the contract in accordance with Public Contract Code section 20142, in an amount not to exceed $28,048.04 per change order; and
5. Authorize the Executive Director to file a Notice of Completion with the County Recorder upon successful completion of the project.
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EXECUTIVE SUMMARY
The American Canyon Sanitary Landfill is a closed landfill owned by the NVWMA. As part of the maintenance of the facility, leachate, which is water that has percolated through the buried waste, is collected and sent through a series of pipes to five on-site holding tanks. When full, the leachate in these holding tanks is tested and pumped through a 4” HDPE pipe approximately 2.9 miles long to the Vallejo Flood & Wastewater District. The cleanouts along this pipe will help remove the sediment that accumulates in the pipe as the leachate flows to the VFWD. There are 23 locations along the HDPE pipe where cleanouts will be installed. Each of these locations have two cleanouts.
The American Canyon Leachate Line Improvement Project was advertised for bid on August 12, 2024. A project site walk-through was conducted on August 30, 2024, and bids were opened on September 19, 2024. One bid was received with a total bid amount of $280,480.42. The Engineer's Estimate was $210,000.00.
Staff recommends approval of Plans and Specifications and award of the contract for the construction of the American Canyon Leachate Line Improvement Project No. 25801 to Benchmark Civil Construction, Inc. in the amount of $280,480.42. Plans and Specifications and bid results are available at:
https://www.countyofnapa.org/bids.aspx?bidID=442
FISCAL & STRATEGIC PLAN IMPACT
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Is there a Fiscal Impact? |
Yes |
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Is it currently budgeted? |
Yes |
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Where is it budgeted? |
Account 8100010 |
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Is it Mandatory or Discretionary? |
Discretionary |
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Discretionary Justification: |
To help flow from ACSL to Vallejo Flood & Wastewater District |
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Is the general fund affected? |
Yes |
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Future fiscal impact: |
Clogged pipes increase maintenance costs. |
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Consequences if not approved: |
Clogged pipes increase costs to remedy and could affect leachate sediment removal. |
ENVIRONMENTAL IMPACT
ENVIRONMENTAL DETERMINATION: This activity is categorically exempt from the California Environmental Quality Act (CEQA) pursuant to CEQA Guidelines section 15301, as the minor alteration of existing facilities involving negligible or no expansion of existing use, and statutorily exempt from CEQA pursuant to Public Resources Code section 21080.21, as the installation of new pipeline less than a mile in length within a public street.