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NSW Department of Planning, Industry and Environment
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On 14 May 2020, the Department issued an Official Caution to Metromix Pty Limited (Metromix) for exceeding airblast overpressure performance criteria at their Teralba Quarry.  On 25 March 2020, a blast fired at the Teralba Quarry recorded an airblast overpressure result of 115.7 dB(L). This represented the third exceedance of the 115 dB(L) limit in the past 12 months, exceeding the 5% total allowable exceedances of the 115 dB(L) criterion. The Department will continue to monitor compliance with blasting criteria at the site.

Page last updated: 22/07/2020