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Consent-Community Services # 39.
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| Board of Supervisors |
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| Subject |
| Accept as complete the work on the In-Vessel Digester – Floating Cover Installation Contract at the Yolo County Central Landfill, and authorize the Director of Integrated Waste Management to sign and record the Notice of Completion and pay the final estimate releasing retention. (No general fund impact) (Echiburu/Yazdani) |
| Recommended Action |
- Accept as Complete the work on the In-Vessel Digester – Floating Cover Installation at the Yolo County Central Landfill constructed by Erosion Control Applications, Inc.; and
- Authorize the Director, Division of Integrated Waste Management to sign and record the Notice of Completion and pay the final estimate releasing retention.
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| Strategic Plan Goal(s) |
Operational Excellence
Sustainable Environment |
| Reason for Recommended Action/Background |
California has a statewide goal to divert 75 percent of waste from the landfill by 2020. In February 2007, the California Department of Resources Recycling and Recovery (CalRecycle) adopted Strategic Directive 6.1, which calls for a 50 percent reduction in the amount of organics being disposed in the landfills by 2020. Organic waste makes up approximately one third of the 35 million tons of waste that are currently sent to the landfill in California. To aid in meeting the state wide 75 percent goal, Assembly Bill 1826 was passed in September 2014 requiring businesses, including state agencies, which generate certain amounts of organic waste per week to have organic waste recycling programs in place beginning April 1, 2016. To meet these goals, the landfill has implemented a three-part strategy: having an organic waste transfer facility, an anaerobic composter facility, and construct an in-vessel digester (liquid digester).
The Division of Integrated Waste Management has designed an in-vessel digester (liquid digester) to further divert organic waste from being disposed of in the landfill and surface impoundments. The in-vessel digester will also generate methane for electricity from the diverted organic waste. The construction of the In-Vessel Digester – Floating Cover is necessary to start diverting organic waste into the in-vessel digester and to start producing methane for electricity.
In August 2018 the California Regional Water Quality Control Board approved the plans and specifications for the In-Vessel Digester – Floating Cover. The construction project was advertised for bidding on July 24, 2018 and on September 8, 2018 two bids were received. The lowest responsive bidder was Erosion Control Applications, Inc. On September 26, 2018 the construction project was awarded to Erosion Control Applications, Inc. The construction started on November 1, 2018, and finished by June 6, 2019. The proposed date of the Notice of Completions is July 23, 2019. |
| Collaborations (including Board advisory groups and external partner agencies) |
| Division staff worked closely with staff from the State Water Board to insure that construction met the design specifications. |
| Competitive Bid Process |
Project was released for bid prior to construction.
Bids Received
| Bidder |
Bid |
| Erosion Control Applications, Inc. |
$474,151.25 |
| Layfield USA Corporation |
$614,390.00 |
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| Fiscal Impact |
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| Source of Funds for this Expenditure |
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Explanation (Expenditure and/or Revenue) |
| Further explanation as needed: |
| In-Vessel Digester Floating Cover will be paid by the Sanitation Enterprise Fund, which is funded through the tipping fees collected at the landfill. There will not be an impact to the general fund. Two contract change orders were awarded for the purposes of completing the project. Contract Change Order #1 was approved by the board on April 23, 2019; while Contract Change Order #2 was approved by the delegated authority (Director of IWM, Ramin Yazdani). |
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