LOCATION: EMS_CAT
| Short Description | Formatted Area Source Category Table |
| Created By | ascd.sas |
| ASCII Input File | ems_sys(ascd.in) |
| # | Variable | TYPE | LENGTH | DESCRIPTION |
| 1 | ASCT | Character | 10 | area source category code |
| 2 | DESC1 | Character | 40 | description part 1 |
| 3 | STID | Number | 8 | FIPS state code |