Our Team

Ishmael Semenya (Director)

BSc (Hons) University of the North, South Africa

He worked for Sekhukhune College education as an Environmental Lecturer in 1994.

He then proceeded to work for Molosiwa, Bruin and Associates and Walsh Environmental Inc (USA state of Colorado) as an environmental scientist where he gained vast experience in the fields of Petroleum Hydrocarbon Risk Assessments and Investigations, Water Quality Studies, Environmental Impact Assessments, and Geographic Information Systems using TNT mips.

Ishmael completed in-house internship training in Colorado State in the United States of America.

Margaret Mondlane: Environmental and Natural Resources Manager (Associate)

She has a Masters of Philosophy degree in Environmental Management from the University of Cape Town. She also holds a Bachelor of Science degree in Natural Resources Management with an interdisciplinary study in Conservation Biology from Colorado State University (USA), Margaret has completed a Project Management course at WITS Business School.

She has also completed a Community Based Natural Resources Management course with the University of the Western Cape PLAAS. Margaret specialises in Environmental Science, Natural Resources Management, Geographic Information Systems and Project Management.

Stan Jewaskiewltz (Associate): M.Sc.

M.Sc., D.I.C Soil Mechanics, Imperial College, University of London, United Kingdom.
B.Sc., Civil Engineering, University of Natal, Durban, South Africa
N.T.D., Civil Engineering, Durban Technikon, South Africa

Stan Jewaskiewitz has extensive experience in environmental engineering and waste management (general, hazardous, and mining wastes); including business development, project management, integrated waste management planning and strategic studies.

He also has many years of experience in geotechnical engineering including materials and site investigations, lining systems, foundation engineering, stability assessments of major embankments and geo-hydrological investigations pertaining to groundwater pollution.

Business Associates

EXS has a close working relationship with the following reputable multinational firms to bolster expertise and capacity and to promote technology transfer:

  • KayEnvironmental Services (RSA)
  • Mantswe Natural Resource Consultants (Republic of Botswana)
  • Semenya Furumele Consulting civil and structural engineers (RSA)
  • Sesikhona Inventory Services (RSA)

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