"surely all lyc has to do is export the waste out of Malaysian...

"surely all lyc has to do is export the waste out of Malaysian waters then dump it in the sea if it cannot find a buyer. Absolutely no need to return benign waste to Mt Weld."
I fail to see What is wrong with returning the waste to where it came from.
I would doubt that would be seen as being a good corperate citizen to dump toxic waste in international waters. I doubt any shipping company would want anything to do with it.
I imagine Yeo will fast track permits for transporting. I would doubt there will be another increase to the amount of tempory storage.So waste will have to start moving off shore within a month or so...or production will have to stop.
Cheers