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File #: 25-979    Version: 1 Name: 2025 Annual Biosolids Report
Type: Report Status: Consent Calendar
In control: Resource Management
On agenda: 12/9/2025 Final action:
Title: Accept the 2025 Annual Biosolids Land Application Report from the Department of Resource Management
District: All
Attachments: 1. A - 2025 Biosolids Report, 2. B - BACWA Biosolids Memo
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Accept the 2025 Annual Biosolids Land Application Report from the Department of Resource Management

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Published Notice Required? Yes ___ No _X _
Public Hearing Required? Yes ___ No _X _

DEPARTMENTAL RECOMMENDATION:

The Department of Resource Management recommends that the Board of Supervisors accept the 2025 Annual Biosolids Land Application Report.

SUMMARY:

Solano County Code, Chapter 25, requires that a report be submitted annually to the Board of Supervisors presenting the results of the past season's activities on the land application of Class B biosolids in Solano County. The report must also include an update on the generator's progress toward utilizing alternative technologies for the reuse of biosolids other than land application or landfilling. The report documenting the results of the 2024 season for the land application of biosolids in Solano County is provided as Attachment A.

FINANCIAL IMPACT:

The cost of managing and overseeing the biosolids land application program is typically recovered through fees collected for site registration and land spreading charged to the applicant. Costs for biosolids material sampling and sample analysis are also charged to the applicant. A per-acre surcharge for research, charged to the applicant, is used for conducting research activity to improve understanding of potential impacts, if any, of the land application of biosolids. However, biosolids class B land application has not occurred in Solano County during the past year.

The costs associated with preparing this agenda item are nominal and absorbed by the Department's FY2025/26 Working Budget.



DISCUSSION:

Solano County is one of the few California counties that regulate the land application of biosolids onto agricultural land as a soil amendment. Since 1997, Department of Resource Management (DRM) staff have implemented the local biosolids land application program by enforcing Solano County Code (SCC) Chapter 25 which inc...

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