Green Tech, a key subsidiary of OHG, is currently undertaking the environmental assessment studies of one of the biggest oil refinery facilities in Afghanistan. Dorjeoil refinery is located in Mazar-e-Sharif and it is planned to providing substantial amount of refined oil every day. As the petroleum products might have significant impacts on the environment therefore Green Tech was assigned for providing mitigation, remediation and proper management plans to minimise the adverse impacts of the activities during the operation.