Mt Coot-tha Quarry History of Significant Events - 2008-2009




2008
To be advised
under construction.
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2009

14th October
Philip Best begins Liaison with DERM (/EHP/DES) regarding the blast vibrations and advises that homes are not built like they used to be (they are not as strong).
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24th September
John Heilig does Blast Vibration Monitoring in Phil Best's Property using a soil spike.
We were very alarmed to see that they simply stuck a spike on top of a mound of soft aerated dirt that the bobcat had created only 2 weeks before.
Our suspicions increased when our RPEQ civil engineer said that the transducer must be mounted on a solid surface and preferably on the same bedrock as that being blasted.
The BCC states that they use an independent blast vibration monitoring company, however the Quarry management directs exactly where and how the blast monitoring will be done.
Hence we believe that the monitoring is definitely Directed and NOT Independant.
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17th November
Philip Best attempts to find out from the BCC, the effects of Blasting on homes, so that our engineers will be able to decide what special precautions are required.
Both Chris Lange and Andrew Connor stated that the vibration levels are relevant only to human comfort and are much lower than what is required to damage homes.
We were later to find out that the BCC was only doing blast vibration monitoring at much more distant locations and thus had no idea what blast vibrations were present at our building site.
In 2018 we conducted blast monitoring in our new home to find that the vibrations caused our home to vibrate more than twice as strong as measured out on the road.
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