Virginia regulations · Through 2026 Regular Session (effective July 1, 2026)

4VAC25-40-890: Air overpressure limits

Where this section sits in the code

Title 4. Conservation And Natural Resources
Agency 25. Department of Energy
Chapter 40. Safety and Health Regulations for Mineral Mining
Part VI. Explosives—Surface and Underground

Air overpressure resulting from surface blasting shall not exceed 133 decibels, as measured with a 2Hz or lower flat response microphone, at any inhabited building not owned or leased by the operator.

Collected 2026-09-14T04:45:55Z. Source file · JSON

Browse this collection