All imported soil must be stored in a manner which ensures that it is easily identified as such and is not mixed with any non-regulated domestic soil which may be present (if the two are mixed, all of the material would then be considered as regulated and have to be disposed of accordingly). Labels should be used which clearly identify any regulated soil and can be easily cross-referenced to the company records mentioned above. The containers should be leak-proof and be organized and labeled to separate regulated material from non-regulated material. Describe how your company will meet these requirements. Specify if your company will retain soil samples and, if so, for how long.