Executive Committee

The AELERT Executive Committee meets every 6 to 8 weeks and is responsible for providing guidance and advice on AELERT’s strategy. The Executive Committee is comprised of four officer holder positions. These positions are Chair, Vice-Chair and two Directors. The AELERT executive office holders are:


Monica 2 bwChair

Monica Collins,  Department of the Environment and Energy 

Monica Collins joined the Commonwealth Department of Environment and Energy as Head of the Compliance and Enforcement Branch. Monica most recently worked with the New South Wales Office of Environment and Heritage, and has more than 20 years’ experience working in the environment sector. 

Monica has worked in environmental regulation, compliance and enforcement, community engagement, and environmental program delivery roles, including in the Murray-Darling Basin, threatened species programs, kangaroo management, renewable energy and energy efficiency. Monica also brings experience in managing regulatory reform and change management. 

Narrelle SargentVice-Chair

Narelle Sargent, ACT Environment Protection Authority

Narelle joined the ACT EPA on 30 November 2017 and brings extensive experience in leadership and management in the environment, natural resource, regulatory, planning and central agency coordination, in NSW and ACT governments.

This is coupled with high level achievements in inter-governmental relations, stakeholder engagement and negotiating and collaborating across the tiers of government, including driving NSW’s engagement with the ACT to deliver the inaugural ACT and NSW Memorandum of Understanding for Regional Collaboration.

Narelle has administrated a number of pieces of Commonwealth, ACT and NSW legislation relating to environment protection, nature conservation, water management and land use planning.

Narelle is responsible for leading the day to day regulatory functions of the ACT EPA and works collaboratively both within government and with the community to achieve positive environmental outcomes. The ACT EPA regulates activities related to air, land and water, environmental noise, water resources, lakes, contaminated sites, firewood merchants, clinical and hazardous waste, and pesticide use.

She holds a Bachelor of Rural Science (Hons) and a Graduate Diploma in Management & Professional Studies.


Germaine Healy Profile picDirector 

Germaine Larcombe, Department of Water and Environmental Regulation

Germaine is a senior environmental regulator in Western Australia with the newly established Department of Water and Environmental Regulation. She has over 14 years’ experience in environmental regulatory delivery specialising in environmental compliance and enforcement delivery.

Germaine has experience in international waste shipment regulation under the European Union’s Network for the Implementation and Enforcement of Environmental Law and in the practical application of a wide range of environmental legislation both in Ireland and Australia.

Germaine holds a Bachelor of Science with Honours from the University of Aberdeen, Scotland.



Mark Rossiter, Environment Protection Authority Victoria

Mark is the Executive Director of Regulatory Capability, Engagement and Legal at Environment Protection Authority (EPA) Victoria.


 Mark's team at EPA facilitates internal, media, community and industry engagement, builds regulatory approach and capability through leadership of EPA internal policies, standards and training, leads EPA investigations and provides corporate and regulatory legal services.   His current key focus is the implementation of EPA’s strategy ‘Our Environment, Our Health’ to help build a more modern and agile regulator that works alongside community, business, and government to protect health and the environment by preventing the harmful effects of pollution and waste across Victoria.

A long-time regulatory practitioner prior to joining EPA Victoria, Mark was Executive Director of Operations at the Victorian Building Authority, Head of Aviation and People Safety at Jetstar Airways, Head of Service Strategy at Airservices Australia and the Manager of Safety Oversight at the Civil Aviation Safety Authority. 

 Tracy mackeyDirector

Tracy Mackey, NSW Environmental Protection Authority

Tracy, as Chief Executive Officer, NSW Environmental Protection Authority became the NSW AELERT Jurisdictional Representative in October 2021.

 Tracy has extensive professional experience in policy, engagement and advisory across a number of portfolios including town planning, housing, human and social services.

She has deep experience in government having spent time in all three tiers and comes to the EPA from within the NSW public sector – Department of Education. Tracy was most recently the Executive Director Early Childhood Education, leading a division that spanned policy, regulatory responsibilities, program, funding and delivery, during a period of transformation. During her time with the Commonwealth, Tracy held senior executive positions in immigration, health, community and emergency services.

Tracy has also spent time at the executive level at a large not for profit provider, at a multi-national consulting firm and leading her own consulting practice. Complementing her executive roles Tracy brings experience as a non-executive director on a number of Boards.


 The AELERT Executive Office Holders also sit on the AELERT Steering Committee.