In 2004, a provision was introduced into the Environmental Code, which states that the plans and programs that may lead to significant environmental impact should be tested through an environmental impact assessment. This study focuses on what happens after such a description has been made. Is there anyone monitoring the real impact? And if so, in what regard?By reviewing environmental impact assessments made of Detailed Development Plans, as well as interviews with the municipalities concerned, I wanted to answer the question of municipalities actually live up to the legislative requirements, and how is monitoring sections written in the EIA's. The results show varying quality regarding monitoring sections in the EIA´s and almost non-existent follow-up work after the plan has been prepared.The municipalities that were interviewed all thought that the follow up idea was good, but in practice difficult. The reasons for this are that the law is poorly precise; there is a lack of resources or that the responsibilities within the organization can be a problem according to the municipalitiesOne of the solutions to this problem may be a reporting requirement against the municipalities, as this usually leads to an expanded and more focused work.