Mr Hogan said he had been in touch with state colleagues who were already in talks with Resources and Energy Minister Anthony Roberts about grounds for an appeal. He said he was "extremely disappointed" by the news.
"We do not want CSG in the Northern Rivers and we need to do everything we can to make sure that is what happens.
"This isn't over, while they may be feel happy with the decision today, I don't think it's over legally and it's certainly not over as far as them coming back into our community to do what they want to do."
Mr Hogan added it would be "quite foolish" for Metgasco to consider returning to Bentley in the near future.
"I think this community has shown very strongly that they do not want coal-seam gas in this region," he said.
"While they have won this court case, there are still legal options for the state government to take, and the first one would be an appeal.
"I think the suspension should remain until that appeal is heard."
The Knitting Nannas Against Gas (KNAG) on Facebook, 25 April 2015:
Excerpt from an editorial in The Northern Star, 25 April 2015: