As one of the partners who started Prism EMS in 2005, De Wet Botha has become synonymous with Prism EMS. Under De Wet’s management and skillful hand, the company has grown to a significant role-player, in the market today.
De Wet has extensive experience in conducting a broad range of applications related to authorisations from the various authorities managing Environmental Legislation in South Africa. He has completed numerous EIA’s and Basic Assessment Report applications. He has conducted EIA reviews and has acted in a specialist advisory role to other consultants and applicants. Management Plans compiled include Environmental Management Plans (EMPs), Open Space EMPs, Wetland EMPs and Waste Management Plans. De Wet has extensive and specialised experience in wetland- and aquatic assessment and delineation. In addition to this, De Wet also has experience in Visual Assessments, Specialist Faunal and Floral Surveys, Grassland Rehabilitation and Baseline Agricultural Potential Studies. De Wet is an experienced Environmental Control Officer and – Auditor. GIS data and spatial modelling is included in De Wet’s range of capabilities, along with GIS sensitivity mapping and Project Management.
De Wet is considered as one of only a few specialists when it comes to habitat assessments for the endangered Juliana’s Golden Mole (Neamblysomus julianae). The severely threatened “endangered” Juliana’s Golden Mole is an elusive subterranean mammal that counts among the most unique and endangered, yet poorly studied endemic small mammal species of South Africa (Maree 2003). With more than 80 studies under his belt, De Wet is the specialist of choice suggested by both the Gauteng Department of Environment, and the City of Tshwane Local Municipality.
De Wet is very often included in discussions at the pre-feasibility stages of projects, to determine developability and economic viability of proposed projects. With his management skills and extensive technical knowledge, he is key in steering the entire environmental management and licensing process, including project strategic planning, management and review of specialist reports, identifying obstacles, development of mitigating measures and guiding the process through inception, to completion.
De Wet is considered to be the ‘go-to’ consultant for various large developers in Gauteng. His knowledge of environmental law is all encompassing and his relationships with the various Local- and Provincial Departments a benefit to any project.
Ms Elizmarie Bester has experience in conducting a broad range of applications related to the South African environmental legislation sector. She received her Master’s Degree in Environmental Sciences in 2017 from the North-West University. After spending two years abroad, she returned in 2019 to further her science career in South Africa. She has experience in environmental impact assessments, freshwater ecology identification, water quality sampling, environmental construction monitoring, geographical information systems (GIS), public participation processes (including stakeholder engagements), and environmental legislation applications which includes water use license and environmental authorisations. In 2025 she joined the PRISM EMS team as a senior environmental assessment practitioner. She is a registered Professional Natural Scientist, a Registered Environmental Assessment Practitioner, and holds membership with the International Association for Impact Assessment South Africa.
As a Senior EAP at Prism EMS, Elizmarie manages large projects from inception to authorisation. She is highly skilled and experienced in Water Use License applications. She leads the team of junior consultants at Prism EMS with a guiding hand and wealth of experience and knowledge.
Tean completed his Master’s degree in 2024, focusing on the trophic transfer of potentially toxic metals and metalloids (PTMs) within a naturally PTM rich terrestrial ecosystem. Eager to find his feet within the environmental management industry, Tean started his first position as Junior Environmental Assessment Consultant at Prism Environmental Management Solutions in February 2025.
This position at Prism EMS has allowed him exposure to environmental consulting on the ground level, through acting as Environmental Control Officer (ECO) on multiple projects, including residential developments, road infrastructure and waste management facilities, ensuring compliance with environmental legislation and authorisations. Tean has also conducted field surveys and assessments as a terrestrial ecologist, focusing on faunal, floral, and terrestrial biodiversity assessments. Furthermore, he authored and contributed to technical reports (e.g., compliance monitoring reports, ecological assessments) for regulatory submissions. Through the aforementioned, he has gained experience in environmental authorisation processes, stakeholder engagement and the integration of biodiversity considerations into development planning. He is currently registered with SACNASP as a Candidate Natural Scientist.
Tean is focusing his attention on becoming a Biodiversity Specialist, with a special interest in birds.
Currently employed as a junior Consultant and Environmental Control Officer at Prism Environmental Management Services, Tean is dedicated to delivering practical, sustainable solutions to environmental challenges.