Hallmark Carbon Project

Hallmark Carbon Project is a soil carbon sequestration project located in the West Wimmera region of Victoria, approximately 25 kilometers south of Kaniva and near the rural locality of Serviceton. Situated close to the South Australian border, the project was registered in May 2018 and currently covers a concise area of 48.66 hectares, following a variation that removed certain land areas in November 2020. The surrounding region is a well-established agricultural zone, predominantly utilized for broadacre dryland cropping and sheep grazing.

The project operates under the 2021 "Estimation of Soil Organic Carbon Sequestration using Measurement and Models" methodology. This framework awards carbon credits (ACCUs) for increases in soil organic carbon stocks achieved through changes in land management. Specifically, the Hallmark Carbon Project implements activities such as pasture rejuvenation, using seeding or pasture cropping techniques, and strategic alterations to stocking rates and grazing intensity. These measures are designed to increase biomass production and ground cover, thereby driving higher rates of carbon transfer into the soil profile compared to the historical baseline.

Environmentally, the West Wimmera area is characterized by a temperate to semi-arid climate with an average annual rainfall of approximately 400mm to 500mm. The local soil landscape is typically dominated by Grey Vertosols (cracking clays) and Sodosols, which are fertile but require careful management to maintain structure and moisture retention. These heavy clay soils generally offer significant potential for carbon sequestration when management practices are optimized to reduce disturbance and increase organic matter inputs.

A notable aspect of this project is its administrative evolution. While originally registered under the 2014 soil methodology, the project transitioned to the updated 2021 methodology in October 2025, allowing for a hybrid approach of physical measurement and modelling. Furthermore, the project management has shifted significantly; initially associated with Corporate Carbon Solutions, the project proponent role was transferred to Agriprove Solutions Pty Ltd in September 2025, placing it under the management of one of Australia's largest soil carbon developers.