A Legislative Council committee looking into fish farming in Tasmania will on Friday take evidence from two former members of the government's Marine Farming Review Panel who quit in 2018 in protest to the rapid expansion of Tasmanian salmon farms.
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In a submission to the inquiry, the women said they supported a sustainable salmon industry but had concerns over its planning and regulation.
"Legislative restrictions and flaws do not allow timely response to changes in the marine environment," they said.
"For example, sections that provide sole power to the minister to approve or reject marine farming development plans and amendments to such, and to approve and revoke emergency plans.
"The flaws in the legislation have directly resulted in environmental harm in Macquarie Harbour, which is unlikely to fully recover."
They said the Marine Farming Planning Review Panel functioned poorly, did not apply sound science, and had the propensity "to only provide advice operationally convenient to the salmon industry".
Environment Tasmania on Thursday released a new video which is intended to inform salmon consumers of the amount of waste produced by farmed fish each year.
The organisation will also appear at a fish farm inquiry hearing on Friday.
Environment Tasmania strategic director Laura Kelly said evidence would be presented which showed the government's failure to provide basic data to support the locations of proposed salmon farms and its failure to require industry to provide independent data on the impacts of operations and compliance with environmental benchmarks.
"The only way to explain such simple and massive omissions from the salmon planning and monitoring process is industry interference in both governance and scientific processes," she said.
Meanwhile, the government has released the Tasmanian Salmon Industry Environmental Scorecard for 2018-19.
Environment Minister Roger Jaensch said the results compiled by the Environmental Protection Authority showed 100 per cent of leases had environmental conditions monitored.
He said 94 per cent of benthic monitoring surveys on these leases showed compliance with regulations.