By using this report decisions about the realization of a soil expertise network can be made by those who are involved. For policy- making and -implementation complementary technical information is necessary ; the knowledge for that is mostly not available or accessable. For the solution of the issue a combination of directives guidelines and technical manuals on soil protection techniques, quality control and company-internal environmental control are considered indispensable, together with an expertise network for knowledge transfer. The network wil be focussed on State, provincial and municipal authorities. RIVM will be the centre of the network with TNO, KIWA and Staring Centre.