Ann: LCK Produces First Syngas, page-49

Thanks AL, happy to be corrected regarding the geology of the site.
This was from the SA assessment of the site for UCG:

Nevertheless, the observed magnitude of the milli-darcy hydraulic conductivity
numbers within the Main Series Overburden (MO) indicate a very tight and in some
parts almost impermeable aquitard. This would reasonably infer that the overburden
and underburden mudstone, respectively above and below the coal, is not conducive
to significant flow of either water or gas away from any proposed underlying
gasification chamber.

A storage license was certainly applied for, and presumed granted. Not sure if a license has an expiration if it is not utilised.

CO2 collection and storage may be expensive, but that cost is borne by the buyer of the carbon credit, hence as you say, an economic trade off for the buyer, but a revenue stream for LCK.