The environmental risk classification that has been undertaken within the framework of the study is based on the Swedish Environmental Agency (NV) methodology for the inventory of contaminated sites (MIFO). Since a firing range contains a large amount of unexploded ordnance (UXO) and munitions constituents2 that are unevenly distributed within each target area, only a more general risk classification can be implemented. To partially illustrate this problem the risk classification has been performed in two separate parts, one composed of a classification of each UXO, and the other one covers the whole target area. The study also found that the Risk evaluation model (RVM) formerly developed by FOI, in its present form, is not possible to directly incorporate into the Environmental risk method (MRM), mainly because it is difficult and controversial to introduce a graduated scale of personal risk. However, RVM and MRM can advantageously run parallel as they partly use the same input data which is produced by Swedish EOD and Demining Centre (SWEDEC) classification material. For the example the Grytan firing range, the environmental risk of each target area falls within the MIFO risk class 3, while the area around each UXO is class 2. The study has been commissioned by the Swedish Fortifications Agency (FortV), which also funded the project.