Protesters will greet the release of the Parliamentary Commissioner for the Environment's report on fracking, due out at 1pm today.
The report is expected to be critical of the regulations controlling fracking in New Zealand and recommend they be tightened.
Commissioner Dr Jan Wright released her initial report in 2012 after concerns were raised about the environmental impact of fracking - the hydraulic fracturing of rock to release fossil fuels - which has been used in New Zealand for 25 years.
The preliminary report found fracking was probably safe providing it was well-regulated, which it was not, but more investigation was needed.
Members of Frack Free Kapiti will picket the launch of the report today.
In a statement the group said that irrespective of regulation "this form of gas production and its long term toxic pollutants can never be deemed safe nor environmentally sustainable in New Zealand".
In March, Environment Minister Amy Adams released best-practice guidelines for fracking.
The guidelines cover land farming and say fracking fluids needed to be controlled to ensure they did not contaminate water supplies.
Should the speed limit be raised to 110kmh on some roads?Related story: 110kmh limit moves closer