Bicentennial Road STUART HIGHWAY STUART HIGHWAY STUART HIGHWAY VICTORIA HIGHWAY Gorge Road Florina Road Zimin Drive Lansdowne Road Emungalan Road Collins Road Cragborn Road Uralla Road Alice Springs - Darwin Railway RAAF Base Tindal Investigation Area Investigation Area (On-base) Katherine Airport Cutta Cutta Caves National Park Katherine Uralla Lansdowne Tindal Katherine East Emungalan Katherine River LEGEND Inferred PFAS concentration in groundwater (Sum of PFOS and PFHxS concentration (μg/L) Limit of reporting to 0.07 μg/L 0.07 to 7 μg/L 7 to 70 μg/L 70+ μg/L