Our team is driven by a strong work ethic and offers a fresh perspective through a comprehensive, integrated approach to environmental management. With extensive experience in the different sectors of environmental management we are able to support and guide our clients through comprehensive Environmental Impact Assessment (EIA) processes to achieve sustainable development approvals.
Adél Groenewald
Director | Environmental Assessment Practitioner
Adél became a Shareholder and Director in 2025, bringing over 10 years of experience in environmental consulting. Holding a BSc in Geography from the University of the Free State, she began her career in 2013 and is a Registered Environmental Assessment Practitioner (EAP) with the Environmental Assessment Practitioners Association of South Africa (EAPASA).
Specialising in managing complex Environmental Impact Assessments (EIAs) for a variety of projects, including mixed-use developments, industrial sites, tourism, residential, infrastructure, and road developments, she has successfully led projects nationwide, consistently delivering high-quality environmental services.
Her leadership focuses on efficient systems, quick problem-solving under pressure, and providing strategic, effective solutions. With expertise in GIS mapping and project management, Adél is dedicated to optimising processes and ensuring top-quality service for both clients and the team.
Tyron Momberg
Director | Environmental Control Officer and Auditor
Tyron became a shareholder and Director of the company in 2025, bringing over 10 years of experience as an Environmental Control Officer (ECO) and Auditor. He holds a BSc in Biodiversity and Conservation Biology from the University of the Western Cape, providing a strong foundation for his expertise in environmental management. Since joining the team in January 2016, Tyron has been instrumental in expanding the company’s environmental monitoring and auditing division.
Throughout his career, Tyron has been involved in a wide range of projects, from small-scale developments, such as bungalows in Clifton, to large-scale operations like the Kusile Power Station in Mpumalanga. He is responsible for overseeing environmental monitoring, compliance, and auditing across diverse projects, ensuring that all environmental standards are met.
Tyron is deeply committed to promoting “environmental best practices.” His approach is direct and focused on delivering practical, actionable advice to contractors. By ensuring they understand the key requirements for working in an environmentally responsible and compliant manner, he plays a crucial role in the successful execution of construction projects that are both sustainable and legally sound.
Doug Jeffery
Environmental Assessment Practitioner
Doug is the founder of the company, and his legacy and commitment have been instrumental in bringing the company to its current position of success. He holds a BSc in Botany and Zoology, and an MSc in Botany, both from the University of Cape Town. Doug is a Registered EAP with EAPASA and a Registered Professional Natural Scientist (Biological Science) with the South African Council for Natural Scientific Professions (SACNASP).
Doug’s expertise spans both the scientific and regulatory aspects of environmental management. With a deep understanding of the workings of non-governmental conservation organisations (NGOs) and government agencies, he is well-versed in their concerns and perspectives on environmental issues. His career has seen him involved in a significant number of environmental applications, providing advice, conducting assessments, and performing audits across a wide range of sectors.
Doug has also worked extensively as a professional botanist, and his diverse career has included oversight of agricultural, residential, mixed-use, industrial, and service infrastructure developments throughout the Western Cape and across Africa.
His work has contributed to shaping the environmental consulting field, and his extensive experience in environmental assessments, planning, and management remains a cornerstone of the company’s success. Doug’s vision and expertise continue to drive the company’s growth and commitment to sustainable environmental practices.
Lian Roos
Environmental Assessment Practitioner
Lian joined our team in 2025 as a Registered EAP with EAPASA and a Registered Professional Natural Scientist (Environmental Science) with SACNASP. He holds a BSc in Environmental Science and a BSc Honours in Applied Science (Water Utilisation), both from the University of Pretoria.
Since beginning his career in 2018, Lian has gained extensive experience as an Environmental and Water Consultant, specialising in environmental monitoring, assessment, and management. His expertise spans the mining, industrial, agricultural, and renewable energy sectors, with project work undertaken across various provinces in South Africa.
Lian provides expert guidance on environmental and water authorisation processes, compliance audits, and regulatory applications, ensuring alignment with legislative and policy requirements. A results-driven professional, he is committed to coordinating interdisciplinary teams to deliver effective, compliant, and successful project outcomes.
Jamie Cloete
Environmental Assessment Practitioner
Jamie joined the team in 2023 and qualified as a Registered Environmental Assessment Practitioner in 2026. She holds a Bachelor of Social Science in Environmental and Geographical Science from the University of Cape Town and a BA Honours in Geography and Environmental Studies from Stellenbosch University.
She has gained robust experience in various statutory processes, compiling Basic Assessment Reports, Environmental Authorisation Amendments, Environmental Management Programmes, and Maintenance Management Plans. Beyond report writing, Jamie is actively involved in facilitating public participation processes, utilising spatial analysis tools for environmental screening, and liaising with regulatory authorities to ensure seamless project progression across commercial, infrastructure, and agricultural sectors.
Highly organised and proactive, Jamie excels at managing timelines across multiple projects. Passionate about reducing environmental impacts, she is committed to supporting regulatory compliance and helping projects secure successful environmental outcomes.
Michele de Raedt
Bookkeeper
Michele is an innovative and driven bookkeeper with many years of experience in the financial industry. She joined the company in 2011 and since then has enabled the company to do business effortlessly while securing client relationships. Michele’s knowledge and expertise strengthens our team’s ability to reach goals timeously and efficiently.
Duncan Dourans
Environmental Control Officer
Joining the company in 2025, Duncan has brought extensive compliance monitoring experience from the renewable energy sector into the residential, infrastructure, and mixed-use development sectors. Having obtained a BA Honours degree in Geography and Environmental Science from the University of the Western Cape, his qualifications and experience assist in navigating the complexities of the environmental industry.
Across various projects and sectors, Duncan has developed a comprehensive understanding of environmental legislation, environmental risk management, and conservation-related practices. As an Environmental Control Officer, his work involves ensuring compliance with Environmental Authorisations and Environmental Management Programmes, while building effective relationships with contractors, clients, and key stakeholders.
Duncan brings both technical expertise and critical thinking to his professional practice, ensuring environmentally responsible project outcomes and sustainable compliance-driven solutions. He is committed to delivering high-quality environmental management services while promoting best practice, accountability, and continuous environmental improvement across all projects he is involved in.
Carlè Heyns
Candidate Environmental Assessment Practitioner
Carlè joined Doug Jeffery Environmental Consultants in 2025 as a Candidate Environmental Assessment Practitioner. She holds a BA degree in Environment and Development, as well as a BCom Honours degree in Public and Development Management, both from Stellenbosch University.
She began working as an Environmental Assessment Practitioner in 2024 and has since gained experience in a range of environmental impact assessment and environmental management processes across the Western Cape in South Africa. Her work includes undertaking Basic Assessment processes, Environmental Impact Assessment and Scoping processes, and compiling Environmental Management Programmes, Maintenance Management Plans, as well as facilitating stakeholder engagement processes for a variety of development projects.
Carlè is highly organised, demonstrates strong time management skills, and is able to effectively manage multiple projects simultaneously while maintaining attention to detail and meeting deadlines. She is passionate about supporting sustainable development and ensuring effective environmental management processes.
Francois Jansen van Vuuren
Environmental Control Officer
Francois Jansen van Vuuren is an Environmental Control Officer (ECO) at Doug Jeffery Environmental Consultants, specialising in environmental compliance monitoring and auditing across a diverse range of construction and development projects. His experience includes ECO monitoring on road infrastructure, residential estates, pipelines, housing developments, bungalows, and other civil construction activities.
With a lifelong appreciation for the natural environment, Francois is committed to ensuring that development activities are undertaken in accordance with environmental authorisations, environmental management programmes (EMPrs), and relevant legislation. He adopts a practical and collaborative approach on site, working closely with contractors, engineers, and project teams to promote environmental compliance and responsible construction practices.
Through regular inspections, auditing, reporting, and stakeholder engagement, Francois assists clients in identifying and addressing environmental risks while supporting the successful implementation of sustainable development principles. His dedication to environmental stewardship contributes to the protection of natural resources and the minimisation of environmental impacts throughout the construction process.
Larissa Kelbrick
Candidate Environmental Assessment Practitioner
Larissa is a Registered Candidate Environmental Assessment Practitioner (EAP) with the Environmental Assessment Practitioners Association of South Africa (EAPASA). She holds a BSc in Environmental Science with Zoology and Tourism, a BSc Honours degree in Biodiversity and Conservation Ecology, and an MSc in Environmental Science from North-West University.
She joined our team in 2026 and has a strong academic background in environmental management, biodiversity conservation, and sustainability.
As part of the environmental consulting team, she contributes to environmental assessment processes, report preparation, and project support while continuing to expand her experience within the environmental sector. She is committed to promoting environmentally responsible decision-making and achieving positive project outcomes.