Since 18.02.2022, Dr. Donié Geo-Consult GmbH has been certified as an expertise service provider according to DIN EN 16775:2016.
Mr. Dr. rer. nat. Christoph Donié is a personal certified expert according to DIN EN ISO/IEC 17024:2012for geological and geophysical subsoil investigations in trenchless pipeline construction “HDD – Microtunneling – Direct Pipe” (Euro-Zert) with additional qualifications “Subsoil expertise for trenchless pipeline construction – mass movements – cavities – water flow paths – boundary loose / solid rock (Euro-Zert)”.
Dr. Donié Geo-Consult GmbH has been certified according to ISO 9001, ISO 14001, and ISO 27001 since 09 June 2026.