MLCs are buckling down for three days of discussion on a draft report on the forestry inquiry before its probable release on Friday.
The 169-page draft report details the findings of the select committee on the Tasmanian Forest Agreement Bill from 12 days of hearings and more than 130 public submissions.
It is unlikely to make any recommendations, but Huon MLC and committee chairman Paul Harriss says that doesn't mean the bill will pass the upper house without amendment.
Mr Harriss said the final report may be released on Friday and debated when the Legislative Council resumes for the year next week.
Launceston MLC Rosemary Armitage said some amendments were required to patch up the "rush job" done by government, and to guarantee parts of the agreement that were left out of the original legislation.
"Really, it should have been sorted out by the lower house - it's shouldn't be for us to sort this out," Ms Armitage said.
Elwick MLC Adriana Taylor said she was still not sure whether she would support the legislation.
Ms Taylor said it was unlikely that the bill would be approved without increasing the sawlog quota from 137,000 cubic metres to about 155,000 cubic metres, which would have an impact on forest reserves.
Signatories have said any change to the reserves would be a deal-breaker.
"My priority is a sustainable industry and putting into reserves higher conservation value forests," Ms Taylor said. "I'm not convinced that all 500,000 hectares needs to be put into reserves."
Ms Taylor said she was concerned that the proposed reserves had not been scientifically selected, and was concerned that non- signatory groups, such as Markets for Change, would neither support the deal in its current form nor say what needed to change.