• Bouwer, D and van Tol, J.2019. Hydropedological study of a tailings storage facility and mining of old mine dumps of the Barbeton/Fairview mine. Report prepared for Cabanga Environmental
  • Van Tol, J and Bouwer, D. 2019. Hydropedological Survey of the proposed dense media separation stockpiles at Der Brochen, Limpopo Province. Report prepared for SRK Consulting.
  • Van Tol, J.J. & Bouwer, D., 2019. Hydropedological survey of the VOPAK site, Port of Richards Bay, KwaZulu Natal. SRK Consultants.
  • Baker,    &   van   Tol,   J.J.,   2019.   Hydropedological   assessment   of   the Manungu   Mining   Project,   Delmas,   Mpumalanga.  Environmental Impact Management Services.
  • Van Tol, J.J. & Du Plessis, C.J., 2018. Hydropedological survey report for a proposed diamond mining site on the farm Weltevrede, Christiana, Free State Province.
  • Van Tol,   J.   &   Le   Roux,   P.A.L.,   2018.   Hydropedological   survey   of Emhakhazeni   mining   sites   near   Belfast,   Mpumalanga.  The Biodiversity Company.
  • Van Tol,   J.   &   Le   Roux,   P.A.L.,   2018.   Hydropedological   survey   of   the potential   Aviemore   mining   sites   near   Dundee,   KwaZulu-Natal.  The Biodiversity Company
  • Bouwer, D and van Zijl , GM, 2017. Hydropedological assessment of Yzerfontein gypsum mine, Western Cape Province. Report prepared for Site Plan Consulting.
  • Van Tol, J.J., & Le Roux, P.A.L., 2017. Hydropedological survey to assess the impact of extending open-cast coal mining on wetland functioning, Palesa Mine, Bronkhorstspruit. Digby Wells.
  • Le Roux, P.A.L., Tinneveld, M., Bouwer, D. and Keunene, B.T. 2015. Distribution of Nitrogen from dam overflow in Secunda. Report prepared for Sasol.
  • Van Tol, J.J., 2014. Report on the soil and agricultural potential of the proposed Kutulu Tsatsi Concentrated Solar Plants, near Kenhardt, Northern Cape Province. Savannah Environmental.
  • Le Roux, P.A.L., 2012. Report on a Soil survey as part of an Environmental Impact Assessment of the development of a Solar Farm on the soils of Glen Thorne Solar Farm, Bloemfontein. For the CSIR. Stellenbosch.
  • Le Roux, P.A.L., Bouwer, D., Van Zijl, G.M., Matshawu, B & van Tol, J.J., 2010. Hydrological flowpaths controlling the distribution of Zn at the Zincor mine, Springs.
  • Le Roux, P.A.L. & Van Tol, J.J., 2008. Actions required for Hotazel pit water dewatering and gardening project: Action 1 Prefeasibility study.

Soil and Land Capabilities

  • Bouwer, D and van Zijl, GM. 2019. Agricultural assessment for the proposed development of the Gromis-Nama-Aggneis 400KV IPP Intergration. Report prepared for Enviroworks.
  • Van Zijl GM and Bouwer, D. 2018. Baseline economic mapping project of the Upper Olifants River Catchment. Report prepared for the NBF
  • Vab Zijl, GM, Du Plessis,C. 2016. Agriculture Impact Assessment for 160km of refurbished water pipeline, Limpopo. MSW Consulting.
  • Van Zijl, G.M., Du Plessis, C. 2016. EIA level report: Soil and land capability assessment for the proposed 150 MW Metsimatala CSP facility, Postmasburg, Northern Cape Province. Prepared for Enviroworks.
  • Bouwer, D., Le Roux, P.A.L., 2014. Landtype interpretation and field verification. Department of Mineral Resources.
  • Van Tol, J.J., 2012. Disaggregation of land types for determination of erosion sensitivity of selected sites in the Eastern Cape for afforestation. Sigwale and Associates

Agricultural Services

  • Van Zijl GM and Bouwer, D. 2020. Determination of irrigation status in 1998 and 1984 for three portions of land in the Northern Cape Province. Report prepared Milnex CC
  • Bouwer, D and Van Ziijl, GM. 2020. Baseline soil investigation with crop selection and post season NDVI. Report prepared for The Humansdorp CO OP.
  • Van Tol, and van Zijl, GM. 2020. WAD 510 Irrigation suitability soil survey. Report prepared for Milnex CC.
  • Bouwer, D and van Zijl, GM. 2019. Irrigation potential soil survey for selected areas near Hopetown, Northern Cape. Report prepared for Eco Con.
  • Van Zijl, GM, Du Plessis, C, and Bouwer, D. 2018. Irrigation potential soil survey for three sites of approximately 1200 HA near Douglas, Northern Cape. Report prepared for Paul De Villiers.
  • Van Zijl, GM, Bouwer, D and Du Plessis, C. 2017. Irrigation Suitability Report for three portions of land totalling 3500 ha near Douglas, Northern Cape Province. Report prepared for Idstone Farming.
  • Van Zijl G.M. 2015. Desktop Study to determine potential sites with suitable soils for irrigation near Kolomela Mine, Postmasburg. Prepared for Umhlaba Consulting Group.


  • Van Tol, J and Bouwer, D. 2020. Hydropedology and contamination reconnaissance survey for a Boksburg mine rehabilitation. Report prepared for Leap Environmental
  • Bouwer, van Tol, van Zijl, Lorentz and le Roux. 2019. Hydropedological Investigation into the Wilgeheuwel/Constantia/Ruimsig corridor. Report prepared for Mont Consulting.
  • Van Zijl, G.M., Bouwer, D., Van Tol, J.J., Lorents, S., Le Roux, P.A.L. 2019. Cosmo City Hydropedological report. Prepared for Infraconsult Engineering, on behalf of the Johannesburg Roads Agency.
  • Van Tol,   J.,   2019.   Assessment  of   the   pollution   status  of   soils  from  the Copperbelt Province, Zambia. KLM Consulting.
  • Van Tol, J.J. & Bouwer, D., 2019. Report on the reuse of effluent waste and lime in the City of Umhlathuze. Natural Resource Stewardship Programme, GIZ