LOCATION: EMS_CAT
| Short Description | Area Source |
| Created By | oic_asct.sas |
| ASCII Input File | ems_sys(oic_asct.in) |
| # | Variable | TYPE | LENGTH | DESCRIPTION |
| 1 | ASCT | Character | 10 | area source category code |
| 2 | DESC1 | Character | 40 | description |
| 3 | OIC | Character | 13 | old industrial code |
| 4 | ACTCODE | Number | 8 | "unused in EMS-95" |
| 5 | PROCCODE | Number | 8 | "unused in EMS-95" |
| 6 | CNTLCODE | Number | 8 | "unused in EMS-95" |
| 7 | HOURS | Number | 8 | code value for hourly operation |
| 8 | DAYS | Number | 8 | code value for daily operation |
| 9 | PROFILE | Character | 5 | hydrocarbon profile number |