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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 460. Department of Mines |
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Chapter 25. Oklahoma Explosives and Blasting Rules and Regulations |
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Subchapter 13. Performance Standards |
SECTION 460:25-13-21. Airblast
Latest version.
- (a) Maximum allowable airblast at any dwelling, public building, school, church, commercial or institutional building shall not exceed one hundred and twenty nine (129) decibels when measured by an instrument having a flat frequency response (+/−3 decibels) over a range of at least 6 to 200 hertz. If the airblast is measured with an instrument having a flat frequency response of (+/− 3 decibels) over a range of at least 2 to 200 hertz, the corresponding limit is one hundred and thirtythree (133) decibels.(b) If the department believes that the airblast from a blasting operation is exceeding or threatening to exceed the limits in section (a), it may require theat the blaster monitor the air airblast for a specified period.(c) The blaster shall take precautions, including the adequate confinement of all explosive materials, to ensure that the airblast limits in section 460:25-13-21(a) are met.(d) The Department may require lower limits than those specified in section 460:25-13-21(a) in the vicinity of buildings with increased susceptibility to damage from airblast, such as those with large plate glass windows, or in areas where excessive airblast could be deemed unacceptable, such as near hospitals or schools.