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Keeping weeds and plant diseases out of the NWTD supply chain

Protecting the natural environment is a key focus of the North West Transmission Developments (NWTD), with the project team continuing to monitor and manage biosecurity risks across the project area.

Recently, the NWTD environment team, alongside specialist environmental consultants Enviro Dynamics, carried out inspections at three quarries that will supply aggregate for access tracks and potentially crane pads during construction.

The inspections focused on identifying weeds and Phytophthora, a soil-borne plant pathogen often referred to as "root rot". Phytophthora infects the root systems of plants, causing damage or plant death. It can spread through water, soil and on machinery, making quarry materials an important pathway to monitor and manage.

Daniel Dransfield, TasNetworks Senior Environmental Specialist, said preventing the spread of weeds and Phytophthora through the supply chain is essential to protecting native vegetation, agricultural properties and meeting the project's biosecurity obligations.

"The inspection forms part of our ongoing biosecurity vigilance, helping us confirm that sourced material brought onto the project remains free of pathogens and invasive species before it's used in construction."

One of the highlights of the inspections was the participation of Pippa, a specially trained Phytophthora detection dog. Using her highly developed sense of smell, Pippa can quickly and accurately identify the presence of the pathogen across large areas.

Pippa the Phytophthora detection dog and her handler Morgan McPherson.

Strict biosecurity hygiene measures will continue to be implemented throughout construction, particularly in areas where weeds, pests or plant diseases are present, or where sensitive environments could be impacted by their introduction. Following construction, disturbed areas will be restored and replanted to help minimise the spread of invasive weeds and support the long-term health of local ecosystems.

View the 'Managing weeds in power line easements' fact sheet for further information about TasNetworks' biosecurity measures.

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