How to Symbolize Preplan Information on Map
I receive several questions about how to symbolize preplan data. Fortunately ArcMap comes with a symbolset that includes many preplan symbols in the Hazmat symbolset. This symbolset includes most of the NFPA 170 symbols as well as NFPA 704 and some wildland symbols. In addition to using the canned symbols you can use compound symbols to symbolize other features.