AGL coal seam gas threat to Sydney's Nepean River?

What are we to make of news reports on 31 January 2013 that recent flooding has impacted a coal seam gas well installation on the banks of the Nepean River, pictured above? 

Copy and paste this link in your browser to see footage of the flooded pad and details on the spoils washed into the river.

http://www.jeremybuckingham.org/flooded-nepean-river-coal-seam-gas-well-must-be-independently-investigated/

The idea of infrastructure of this nature being swept away by such a minor adverse rain event, let alone a one in 100 year flood, is the key issue.