CENTENNIAL CLARENCE Clarence Colliery Pty Ltd convicted of five environmental offences after overflows of water containing sediment and coal fines near Blue Mountains National Park. Clarence Colliery Pty Ltd ACN 001 680 584 (Clarence Colliery), a subsidiary of Centennial Coal, has been convicted in the Land and Environment Court of NSW for five offences under the Protection of the Environment Operations Act 1997 (NSW). Clarence Colliery was prosecuted by the NSW Environment Protection Authority (EPA) and pleaded guilty to all five offences at an early opportunity. Clarence Colliery operates a coal mine located near Lithgow. The Wollangambe River runs adjacent to the mine and into the Blue Mountains National Park. Clarence Colliery is required to maintain its surface water management system in a proper and efficient condition. As of 20 December 2023, Clarence Colliery had not properly maintained one of its sedimentation basins, known as the Polishing Lagoon, such that it did not adequately capture and store surface water runoff containing sediment and coal fines. Between about 20-21 December 2023, water containing sediment and coal fines overflowed from the mine. Clarence Colliery did not test its pollution incident response management plan within one month of this incident. Between about 5-6 April 2024, Clarence Colliery did not cease discharges from the Polishing Lagoon contrary to a prevention notice issued by the EPA, resulting in overflows from the mine that were not authorised by its environment protection licence. The offences had the potential to cause harm to the environment, including to the Wollangambe River. On 20 February 2026, the Land and Environment Court convicted Clarence Colliery of five offences, comprising two offences of water pollution, one offence of breaching its environment protection licence, one offence of not testing its pollution incident response management plan, and one offence of breaching a prevention notice. Clarence Colliery was convicted of the five offences and ordered to: (i) pay monetary penalties in the total sum of $630,000; (ii) pay the EPA's costs of the proceedings in the sum of $170,000 and the EPA's investigation costs in the sum of $15,548; and to publish notices of the convictions and the fines imposed. Link to judgment - https://www.caselaw.nsw.gov.au/decision/19c556b6a9bc48ce6789e51c This notice was placed by order of the Land and Environment Court of NSW. 9317 CENTENNIAL CLARENCE Clarence Colliery Pty Ltd convicted of five environmental offences after overflows of water containing sediment and coal fines near Blue Mountains National Park . Clarence Colliery Pty Ltd ACN 001 680 584 ( Clarence Colliery ) , a subsidiary of Centennial Coal , has been convicted in the Land and Environment Court of NSW for five offences under the Protection of the Environment Operations Act 1997 ( NSW ) . Clarence Colliery was prosecuted by the NSW Environment Protection Authority ( EPA ) and pleaded guilty to all five offences at an early opportunity . Clarence Colliery operates a coal mine located near Lithgow . The Wollangambe River runs adjacent to the mine and into the Blue Mountains National Park . Clarence Colliery is required to maintain its surface water management system in a proper and efficient condition . As of 20 December 2023 , Clarence Colliery had not properly maintained one of its sedimentation basins , known as the Polishing Lagoon , such that it did not adequately capture and store surface water runoff containing sediment and coal fines . Between about 20-21 December 2023 , water containing sediment and coal fines overflowed from the mine . Clarence Colliery did not test its pollution incident response management plan within one month of this incident . Between about 5-6 April 2024 , Clarence Colliery did not cease discharges from the Polishing Lagoon contrary to a prevention notice issued by the EPA , resulting in overflows from the mine that were not authorised by its environment protection licence . The offences had the potential to cause harm to the environment , including to the Wollangambe River . On 20 February 2026 , the Land and Environment Court convicted Clarence Colliery of five offences , comprising two offences of water pollution , one offence of breaching its environment protection licence , one offence of not testing its pollution incident response management plan , and one offence of breaching a prevention notice . Clarence Colliery was convicted of the five offences and ordered to : ( i ) pay monetary penalties in the total sum of $ 630,000 ; ( ii ) pay the EPA's costs of the proceedings in the sum of $ 170,000 and the EPA's investigation costs in the sum of $ 15,548 ; and to publish notices of the convictions and the fines imposed . Link to judgment - https://www.caselaw.nsw.gov.au/decision/19c556b6a9bc48ce6789e51c This notice was placed by order of the Land and Environment Court of NSW . 9317