Senator ROBERTS (Queensland) (14:28): Before asking the supplementary question, I just want to say that the people who I have listened to at Oakey have been devastated and they are not being remediated. I will, however, take you up on your offer for a briefing, Minister. Turning to my second question, let me be more specific: the PFAS contamination plume spreading from RAAF Base Williamtown has reached to within 50 metres of the high-tide mark of the Hunter River at Fern Bay. It is already adjoining Fullerton Cove. What is your department doing to stop PFAS contaminating the Hunter River?