The remedial notice was issued to the saleyards proprietor, the Central Victorian Livestock Exchange (CLVX) on Thursday, after monitoring showed smells continued to waft from the site.

It is the second notice the saleyards have received since it opened in October, after one was issued in October requiring CLVX to improve its cleaning methods. Public outcry over the stench has been ongoing from residents.

In October, the hosing down of stock pens was what created the intensified smell at Miners Rest, despite dry cleaning machines being included in the site's Environment Improvement Plan. The notice was later revoked after CLVX complied with recommendations.

The EPA reported that measures of the saleyards odour emission rates was "noticeably higher" than estimates from 2016. By June 17, CLVX will have to share an updated odour impact assessment with the watchdog.

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On April 10, the EPA conducted 'odour surveillance' in streets near the saleyards, where EPA South West regional manager Carolyn Francis said they found a "a moderate to strong odour of sheep manure". EPA confirmed the Miners Rest saleyards were the source of the stench.

"Residents near the CVLX site continue to report that the odour that is affecting them is unreasonable," she said.

"The newly issued remedial notice requires additional actions from the company, and should bring a resolution a step closer."

CLVX has been contacted by The Courier for comment.

Committee For Miners Rest's Werner Oellering said even last night, the "smell was quite bad" but theoretical figures and modelling from CLVX doesn't reflect that.

"I think the EPA are fair restricted in what they can do, but hopefully this process will lead to changes which will satisfy the community," he said.

"Every time I walk out my back yard and i smell it, I think, 'why is that there in a residential area?'a

"If they just measured at my back door, they would know they have a problem."

He said more than 300 complaints from residents across Miners Rest had been lodged with the environmental watchdog.

The new notice will require CLVX to update their odour assessment modelling based off actual emission rates from the site, obtained during the commissioning period.

When the pollution abatement notice was withdrawn earlier this year, Miners Rest resident Amy Oellering told The Courier her backyard still smelled "like a sheep shed" and she wanted firm action from City of Ballarat, CLVX and the EPA.

"I think it's having an impact on mental health of the residents that live close to it, and have to put up with the smell all the time," she said in March

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Information collected by the company following the remedial notice will go into a future Odour Managment Plan with site-specific data, according to the EPA, and will drive "improvements to minimise odour being discharged into the surrounding community".

EPA says if residents are impacted by offensive odour in a residential area, call 1300 372 842.