Hallmark Carbon Project

Hallmark Carbon Project is a soil carbon project located in the West Wimmera local government area of Victoria, approximately 70km west of the major regional center of Horsham. It was registered in May 2018 and covers a project area of 48.66 hectares.

Soil carbon projects operating under the Estimation of Soil Organic Carbon Sequestration Using Measurement and Models 2021 methodology involve introducing new agricultural management practices to increase the volume of carbon stored in the soil. Standard requirements for this methodology include establishing a firm baseline through rigorous initial soil sampling, maintaining ongoing statistical models, and conducting subsequent soil sampling rounds to accurately measure and verify carbon gains. The specific project activities at the Hallmark Carbon Project include altering the stocking rate, duration, and intensity of grazing to promote soil vegetation cover, as well as re-establishing and rejuvenating pasture through seeding and pasture cropping.

The West Wimmera region is predominantly known for broadacre cropping, mixed farming, and sheep grazing operations. The local environment typically experiences a temperate to semi-arid climate with moderate to low rainfall. The soils in this agricultural region are frequently characterised by texture contrast (duplex) soils, such as sandy loams overlying sodic clays, which can be susceptible to erosion if not managed with adequate ground cover.

The project has undergone several administrative updates since its initial registration. In November 2020, the project area was varied to remove certain sections of land. In September 2025, the project's proponent officially transitioned from Corporate Carbon Solutions Pty Ltd to Agriprove Solutions Pty Ltd. The following month, the project was updated to the newer 2021 Measurement and Models soil carbon methodology, transitioning away from the older 2014 Sequestering Carbon in Soils in Grazing Systems method.