On Wednesday 28 of November 2018, COT Academy had held a training course on “Rehabilitation of Contaminated Soils and Underground Water in Factory” at the Chaophaya Park Hotel, Bangkok, by having Assoc. Prof. Dr. Sanya Siriwityapkon from Department of Environmental Engineering of Engineering Faculty, Kasetsart University, Assoc. Dr. Thammasak Rojwiroon from Department of Environmental Engineering, Civil Engineering Faculty, Rajamangala University of Technology Thanyaburi and Mr. Rattanin Saengsayan from Green Sustainability Consultants Co., Ltd. as co-speakers on this course.