-  Fertile plant material has to be transported and stored in closed and clearly labelled repositories at any time outside the release site and laboratory. The spillage of seeds has to be avoided.
If flowers are transported outside of the field site the spreading of pollen has to be prevented.
-  All machines that have been used on the release site have to be thoroughly cleaned on the release site.
-  The germination capacity of all plant material that is not moved to a genetic engineering facility All remaining fertile plant material, including the non-genetically modified maize shelter cropsplanted to surround the field site and harvested corncobs of those has to be destroyed by chopping and subsequent digging under the soildisruption of their germination capacity.
-  IInspection of the release site has to be conducted in the year following the observation of genetically modified maize volunteers. The follow-up inspection needs to include the whole release site and a 5 m band around the site. During the vegetation period the release site must be inspected for transgenic volunteer maize at least once every four weeks. The inspection period has to be extended for another year if maize volunteers were observed, and the volunteer plants have to be destroyed.