Mt Coot-tha Quarry - Historic Data Statistical Reports.

Obtaining the MCQ Blast Vibration Data:

The Local Residents obtained the Mt Coot-tha Quarry Blast Vibration Data from these 3 sources:

1. The EHP Minister first obtained some data which we were able to view.
- In viewing this data some things became obvious:
  (a) The quality of this data report was extremely poor, it contained some duplications and errors.
  (b) The data contained actual blast numbers, which we were later able to link into the RTI Data.
  (c) The data provided the local residents with some insight into what blast vibrations had been done to them and to their homes.
    - It was obvious that a large blast strength discrepancy existed between the different permanent blast monitoring points.
    - The new location on Mt Coot-tha Rd (aka #3SSGD aka 159MCR) showed much stronger vibration values than at the original locations (Sussex & Richer St).

2. The Brisbane City Council RTI Department.
- Whilst the BCC Mt Coot-tha Quarry publicly provides each previous blast vibration data for Mt Coot-tha Rd, that is all they provide.
- In order to get the full picture, we had to use the RTI process, but unfortunately the quarry had deleted their earlier data.
- It is known that the Quarry Monitoring Company also did blast vibration monitoring at the Quarry Weighbridge, this data would have been valuable to indicate the conditions being experienced at the closest residences.
nbsp; - However the Quarry and BCC RTI department declined to provide any of this data to the residents.
nbsp; - This data would have clearly indicated what the homes on the oppsite of the road were receiving.

3. The Qld EHP RTI Department.
- Fortunately the Qld EHP Department had retained some earlier data which we were able to obtain.
- When we imported the data into a Spreadsheet, it seemed that some kind of monitoring practice anomaly had occurred.

4. Statistics Data Analysis.
- We contacted two Statisticians who gave advice, of which the well known Brisbane Statistician Clancy Birrell provided these two written analysis reports.