how clean is clean global enargy (cgv)?

Cougar was in trouble over the deadly chemicals they were leaching into the water supply. How is CGV any different?

I spoke to cgv management and they say they haven't got as much water in the process. They use steam and oxygen in the gasification process and this makes it cleaner. They also say they have research going on in universities. Should this make us feel any more confident about the process?

Any thoughts on this?

Maybe ucg is just the least bad process for reliable energy production.