Western Australia's EPA has revealed that Chevron Gorgon's sequestration performance has slumped, and has recommended stronger carbon conditions on the LNG project.
The Western Australian government plans to introduce a Bill this year that will provide legislative certainty for carbon capture and storage projects in the state.
New documents tabled in the WA Parliament show that the board of the state's EPA last year decided Chevron should ultimately be required to sequester 100% of reservoir CO2 from its Gorgon LNG project, but later backed down.
New data from Chevron shows it risks falling millions of tonnes short of a mandatory requirement to abate greenhouse gas emissions from its Gorgon LNG project.
Chevron has received works approval for stopgap flaring of vapours from its Gorgon LNG plant, but has acknowledged the procedure won't reduce mercury emissions.
Shell designed-out the possibility of a carbon capture unit on its Prelude floating LNG operation, despite saying it would keep space available for it, new documents show.
The WA Government is seeking urgent passage of a bill to lock in liability arrangements for carbon captured and stored from Chevron's Gorgon LNG project, while details have emerged of another major CCS project that never eventuated.