The following was emailed to Stephanie.Cormier@yolocounty.gov and clerkoftheboard@yolocounty.gov on Feb 7, 2025 with a request that the memo be forwarded to the Planning Commission and the Board of Supervisors
From: Alan Pryor, Chair – Sierra Club Yolano Group
To: Yolo County Planning Commissioners
Date: February 7, 2025
Re: The Gravel Mining Companies Operating Adjacent to Cache Creek are Continually Violating Numerous Provisions of the Yolo County Surface Mine Reclamation Ordinance
On behalf on the Sierra Club Yolano Group, attached please find a report in which numerous violations of Yolo County’s Surface Mining Reclamation Ordinance are disclosed and documented. Download Yolo County Gravel Mining C
Further, these violations were not disclosed last year to the Planning Commission when it was charged with certifying the 2023 Annual Compliance Report regarding off-channel gravel mining as required by County Code.
Instead, as explained in the attached report, false representations that all of the mining companies were in compliance with the provisions of all applicable mining ordinances in the State and Yolo County were made to the Planning Commission in Findings of Fact statements.
The ongoing failure by the County to enforce the provisions of the applicable mining ordinances in Yolo County has resulted in continued production and bioaccumulation of methyl mercury to excessive levels in fish in most of the impoundment pits on the mining sites and required Lake Management Plans to remediate the problems have not been implemented. These compliance shortcomings have also resulted in the ongoing failure by the mining companies to fully restore formerly mined farmland back to its pre-existing soil quality and crop productivity.
This is fully explained in the attached report entitled, “Yolo County Gravel Mining Companies are Continually Violating Numerous Provisions of the Surface Mining Reclamation Ordinance_2-7-25”.
We request that the Planning Commission refrain from wrongfully certifying that mining companies are in compliance with Yolo County mining ordinances in the future. We additionally request that the Planning Commission not permit or entitle any future new mines or extensions or expansions of existing mines in Yolo County until such mining companies are in full compliance with all existing ordinances.
Toward that end, we ask that the following questions be addressed with detailed written answers.







