Further research:
IAR process is quite quick, though I was not provided with an absolute value or estimate for this.
CG can be the 'head of power' that regulates the environmental requirements for the water release.
My guess is that the conditions will be similar to the existing monitoring requirements for release of mine water. I see no reason that the CG would impose stricter conditions, if anything, they'll be leaner.
I now change my sentiment back to Buy from a Hold.