On 20.02.2020, the next meeting of our Working Group on Remediation took place in our office. The present participants formed a common opinion about professional materials, and then the tasks of the Organising Committee were discussed. The committee was formed mainly to define and assemble the technical content of this year's Re:Brown conference (this year the conference will be part of the Environtec international environmental exhibition in Budapest at 1-3.10.2024).