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Appendix B - Global Stability Assessment Report
Attached to the e-mail Operational Works Application - DA Form 1 - Town Planning Report - Global Stability Assessment Report - Earthworks Compaction Report - Erosion and Sediment Control Plan - 36 Tunba Court Cooroy Mountain.
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Job No: ME21/032
3.2 Fill Batter
The fill batter, located along the north western edge of the platform was measured to have a height of
approximately 4.5m to 5m, and an average slope angle of approximately 36°. The fill batter had recently
been ‘seeded’ to encourage vegetation.
The toe of the fill batter extended into a natural gully line which appeared to have a slope angle of
approximately 26°. The gully was typically well vegetated with trees and shrubs.
The following site photos were taken at the time of the investigation on the 4th of November 2021:
Site Photo 5: Looking down over the cut batter Site Photo 6: Looking south west across the fill
towards the fill batter with the tree lined gully batter – with the gully at the toe
Site Photo 7: Looking north east across the fill Site Photo 8: Tree lined gully at the toe of the fill
batter batter
3.3 Site Drainage Channels
Drainage channels had been placed around the constructed platform. At the time of the investigation,
silt fence had been placed at either end of the batter and sediment collecting fibre rolls had also been
placed along the toe of the fill batter. It is understood these had been put in place as part of the erosion
and sediment control plan.
Site photos 9 to 14 present the drainage channels and erosion and sediment control barriers observed
at the time of the investigation.
Ref: 27222-rev 1 MORRISON GEOTECHNIC
Mr Geoff Hussin
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