Recommendation R10
Calaveras County Civil Grand Jury recommends the Planning Department maintain a database of known abandoned mines in Calaveras County for internal use by all affected County and State departments, to be implemented by December 31, 2025.
Jury report: Calaveras County Planning Department: Are We Running Out of Rock? · PDF page 17
Permanent linkOfficial response
Calaveras County Board of Supervisors
Agency says implementedThe County calls this implemented because it holds historic mineral-survey maps available for private landowner inquiries.
Read official response · PDF page 10Historic maps available on request do not establish a maintained database usable across County and State departments. The response’s implementation label exceeds the scope demonstrated in its explanation.
This review evaluates the response document. Implementation claims have not been independently verified.