A clean up is underway at the alleged chemical waste dump site at Lemon Springs near Kaniva, according to the Environmental Protection Agency.
EPA site manager Julian Bull said the first few weeks of excavation had been a success.
"It's progressing really well, the contractors have a good grasp on what they need to do; safety being at the forefront of that," Mr Bull said.
"But they've been able to get into one of the high priority sites and remove a lot of waste from that site already.
"We've been able to excavate approximately eighty pallets of waste from site one."
Mr Bull said there are thirty flagged sites of industrial waste dumping across the property.
"Waste is identified at a suspected area; it's then removed by expert contractors who have a lot of PPE on during the removal," he said.
"The waste is then moved to a triage area on the site, sampled, repackaged if needed, and then transported to licensed EPA sites for disposal."
Previously it had been estimated that up to 8000 cubic metres of solid and liquid waste had allegedly been buried on the 1400 acre (566.5 hectare) property.
However, Mr Bull said the EPA could not provide an up-to-date amount.
"We're currently in site one of approximately thirty sites, a changing estimate has not been done yet as we're only into the first site," he said.
"We'll get a better understanding the further along we go, but we'll be out there for at least the next twelve months."
Groundwater sampling conducted in 2020 has shown no signs of contamination.
Mr Bull said additional groundwater wells would continue to be dug throughout the excavation process to monitor possible contamination.
In January, it was announced that the EPA had chosen firm Enviropacific to carry out the excavation and removal of the waste.
In March, EPA charged Graham Leslie White, the site's owner, with 118 offences, including "permitting the transport and burial of various types of industrial waste on his property" and "unlawful dumping creating an environmental hazard".
The charges came with a financial penalty of $34 million and possible jail time.
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