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Quarry expansion advances with added buffers, blast monitoring and road‑realignment options
Summary
Staff described a Vulcan quarry expansion of roughly 60 acres that includes proposed relocation options for Graybill/Graybeal Road, increased berm heights and expanded blast setbacks; the applicant added vibration monitors and a neighborhood pre‑blast notification system and staff proposed conditions and an updated plan of operations.
Staff updated the commission on a proposed expansion of the Vulcan quarry covering about 60 acres (including buffer areas). The submittal now makes relocation of Graybeal/Graybill Road part of the proposal, and staff noted a separate county‑commission action would be needed to close any public road.
The applicant has increased buffering and berm heights (to about 25–30 feet), expanded blasting setbacks (for example, a 450‑foot setback applied to some roads and an increased 500‑foot setback toward Hickory Meadow subdivision, which the applicant said results in a 525‑foot distance to the closest possible house), and added five additional vibration monitors. The proposal includes a neighborhood pre‑blast notification option (advance notice one week and same‑day one hour before blast) and staff recommended conditions that would require a finalized plan of operations and confirm buffers and screening are preserved if the road realignment changes.
Staff noted blasting operations would generally occur up to two times per month but not more than ten times per month and said neighborhood monitoring and notification would be part of the operations plan; commissioners asked questions about the changes and staff requested a clean copy of the updated plan of operations if the commission approves the concept.
