The proposal to create the bypass through the Otanomomo scientific reserve has yet to be publicly notified.
Doc's Otago coastal area manager, Robin Thomas, yesterday confirmed Doc had been approached by Telford about the possibility of opening up a small corridor of land on its boundary with Telford-owned farmland.
The area, which he described as "a small sliver" of low-value land, would allow Telford stock to pass through the corridor from one part of the property to another.
Doc staff had talked to Telford management about where the access could be created, and options had been identified, Mr Thomas said.
He was not sure when the proposal would be publicly notified.
The 37ha scientific reserve, 5km south of Balclutha on the Balclutha-Owaka Highway, is an important remnant of coastal podocarp forest, a forest type rare throughout the country.
The reserve is also home to a small population of the endangered tree daisy.
