Tumbleton Soil Carbon Project

Tumbleton Soil Carbon Project is a soil carbon project located at the 'Tumbleton' property on Bibaringa Road near Wallendbeen, approximately 15km southwest of Young in the South West Slopes region of New South Wales. It was registered on April 12, 2024, and covers an initial area of 1144.12 Ha, though a variation in August 2025 removed some areas from the project.

The project operates under the Estimation of Soil Organic Carbon Sequestration using Measurement and Models methodology. This type of project credits increases in soil organic carbon resulting from new or materially changed agricultural management practices. Projects must establish a baseline carbon level through physical soil sampling and subsequently use measurement or models to estimate the carbon sequestered over the project's life.

The Hilltops local government area and the broader South West Slopes region are highly regarded for mixed farming, encompassing sheep grazing, wool production, and cropping. The regional environment is characterised by a temperate climate with moderate rainfall (typically 600mm to 700mm annually) and features productive red and brown clay loam and granitic soils.

To sequester carbon, the project activities involve altering the stocking rate, duration, and intensity of grazing to promote soil vegetation cover and improve overall soil health. Furthermore, the agricultural system is being improved by applying nutrients to the land in the form of synthetic or non-synthetic fertilisers to address material soil deficiencies. The proponents, Bruce Wilkinson, Gemma Ingle Wilkinson, Jacob Chandler, and Tracey Anne Wilkinson, have a strong focus on regenerative agriculture. They actively manage the property through holistic practices taught by Resource Consulting Services (RCS) and participate in responsible wool and sheep farming programs.