Seven Hills Environmental Planting Project

The Seven Hills Environmental Planting Project (ERF189319) is a carbon sequestration initiative located in the locality of Mullion Creek, approximately 20 kilometers north of the major regional city of Orange in New South Wales. Registered on March 8, 2024, the project covers an area of roughly 59 hectares. The surrounding Central West region is a significant agricultural hub, predominantly utilized for livestock grazing (sheep and cattle) and broadacre cropping, supported by a temperate climate.

The project operates under the Reforestation by Environmental or Mallee Plantings-FullCAM 2024 methodology, having updated its method from an earlier version in May 2025. This specific type of project involves establishing permanent plantings of mixed native tree species on land that has been clear of forest for at least five years. To generate Australian Carbon Credit Units (ACCUs), the planting must be managed to achieve "forest cover" status, typically requiring a stocking density of at least 200 stems per hectare with the potential to reach a height of two meters and 20% crown cover.

Environmentally, the Mullion Creek area sits within a moderate rainfall zone, transitioning between the wetter tablelands of Orange and the drier western slopes. The soils in this region are characteristically Red Chromosols (Red Brown Earths) or Kurosols, featuring sandy loam or loam topsoils overlying clay subsoils. These soil types are colloquially known as the "workhorse of agriculture" in NSW but can be susceptible to acidification and structure decline, making them well-suited for rehabilitation through reforestation. The proponent, Carbon Fix Pty Limited, manages multiple carbon projects in the region, including soil carbon initiatives, suggesting a holistic property management approach where tree planting complements existing agricultural operations.