In the 20-minute hearing, Lance Rowe appeared for the prosecution before Judge Dugald Matheson.
Tasman Tanning has requested a restorative justice conference with the two workers worst affected by the exposure to the gas. Whanganui Restorative Justice Trust facilitator Sue Anderson was also in Court.
In her submission, Ms Burlace said the matters before the court were largely able to be resolved.
"We are still working on a summary of facts and there is no issue with the final resolution."
The company will meet the two primary victims - who were reported to be in Wellington Hospital for a week after a mix-up of chemicals was added to the wrong processor at the plant.
The combination with the chemicals in that processor caused a hydrogen sulphide cloud.
The victim impact statements will be part of a restorative justice report.
Judge Matheson requested that an agreed summary of facts, the restorative justice report and the victim impact statements be filed at court by January 17 to give the presiding judge time to look at them.
He adjourned sentencing to January 29 next year.