On 19 October 2026, the panel convener appointed the expert panel. The panel consists of:
Mary Hill (chair)
Mary Hill is a Mount Maunganui-based resource management and local government barrister with over 25 years’ experience. Mary advises both private and local government clients on all aspects of resource management law. She has chaired several Fast-track panels, including the recent Tauranga Northern Link Stage 2 roading project.
Mary is an independent statutory officer designated by local authorities under Whistleblowing legislation and conducts independent investigations into local authority code of conduct breaches. In those roles she is required to follow the principles of natural justice to ensure fair and independent decision-making.
Mary is a former President of the Resource Management Law Association and sits on the New Zealand Law Society's Environment Committee.
Gavin Kemble
Gavin is an experienced planner with over 35 years' experience, and a certified independent hearings commissioner (with chair endorsement). His experience includes close working relationship with Councils, Tangata Whenua agencies, and corporate entities.
He has worked on a number of large utility and infrastructure projects, across territorial and regional consent authorities. Most recently this has included complex and controversial water and discharge related applications. He is also regularly being engaged to hear applications related to urban growth. He regularly conducts hearings for consent authorities throughout New Zealand (all but two have been as a chairperson), with most of his recent decisions relating to activities in New Zealand’s coastal marine area.
Don McKenzie
Don is a nationally recognised traffic engineer and transport planning consultant bringing some 35 years' experience working with a variety of transport-related planning and projects across the country, assisting clients from the private sector to local and central government and transport agencies. His experience and expertise range from concept to delivery and management, the strategic to the detailed, and consideration of all aspects of safety, effectiveness and efficiency for all transport system users.
He has a range of experience throughout New Zealand and is regularly engaged to provide expert evidence on behalf of parties to Council, Environment Court and High Court matters. He is a Chartered Professional Engineer, Fellow of Engineering New Zealand, Fellow of the Institute of Transportation Engineers (USA) and sits on the Competency Assessment Board of Engineering New Zealand.
Roger Seyb
Roger is a civil engineer with over 30 years’ experience in civil infrastructure development, water management and environmental management.
Roger provides advice to central, local government and private clients, particularly with respect to civil engineering water infrastructure, stormwater and flood management and environmental effects assessments. He has led the civil infrastructure assessments for several large-scale urban development projects and provided specialist water assessments including for; energy generation projects, road transport projects, airports, flood management works and quarries. He provides expert advice and carries out independent peer reviews and has provided evidence at many hearings at Council and the Environment Court.
Roger has had roles in both consultancies and regional council. He holds a Bachelor of Engineering from the University of Auckland, is a Chartered Professional Engineer and a Chartered Member of Engineering New Zealand.
Register of interests
The register records all relevant panel members' interests. It is updated when necessary throughout the consenting process.
Register of interests updated on 20 October 2026 (PDF, 118KB)