Planning commission confirms vested mining rights for B‑Rock limestone quarry in unanimous vote

The Santa Barbara County Planning Commission on June 3 unanimously confirmed a vesting rights determination for the B‑Rock limestone quarry operated by Granite Construction, finding that evidence shows the mine operated and intended to excavate the mapped deposit prior to the county's 1952 permitting requirements.

Staff planner Katie Null told commissioners the request covers about 72.1 acres — approximately 59.5 acres already covered by a 2003 conditional use permit plus roughly 12.6 acres identified as additional limestone reserve — and recommended the commission adopt the findings in the staff report and determine the vesting rights determination is not a project under the California Environmental Quality Act. "The vesting rights determination is not considered a project under CEQA because the determination simply acknowledges the legal right of an operator, but it does not result in direct or indirect physical changes to the environment," Null said.

The staff presentation summarized three required findings: that the operation has not undergone substantial changes since 1976; that the operator incurred substantial liabilities before 1976 (roads, processing facilities and excavation costs are cited); and that historical records demonstrate the owner intended to excavate the full limestone reserve prior to the county's October 20, 1952 permit requirements. Null cited federal records associated with Kachuma/Bradbury Dam construction, aerial photos and historical excavation records as documentary evidence.

Jordan Maine, Granite Construction's land-use consultant, said the administrative record contains "very clear and convincing evidence" and described the quarry's role supplying aggregates for public infrastructure. "There's really overwhelming evidence to support a confirmation of vested mining rights to the extents of the currently known deposit at the B‑Rock quarry," Maine said, noting the site has supplied material for state and local road projects.

Commissioners asked staff and the applicant about a public comment letter from an organization identified as "WeWatch" that raised concerns about visible nighttime lighting. Null said the quarry's original approval includes limitations on operating hours and staff had not received evidence showing lights specifically coming from the B‑Rock operation; she added that because the vesting determination does not itself authorize physical changes, imposing mitigation in this proceeding would be challenging. The applicant said Granite had not received direct complaints about lighting and would look into the concern.

After deliberation, Commissioner Park moved to adopt the staff recommendations and the attached findings; Commissioner Ford seconded. The commission voted unanimously to adopt the findings and to determine the vesting rights determination is not a CEQA project.

The county staff report notes that any future mining impacts associated with expanding or changing operations would be subject to environmental review and to the Surface Mining and Reclamation Act (SMARA) when a new or revised reclamation plan is submitted. The commission's action confirms the operator's vested entitlement under the legal standard discussed in the staff report; further approvals or permit amendments tied to physical changes would be reviewed separately.

The commission moved on to other agenda items. The public record for the vesting determination includes a letter from Yannis Zimmer and the applicant and staff presentations listed in the staff packet.