(1) The following categories of open burning may be conducted during the entire year:

(a) prescribed wildland open burning;

(b) open burning to train firefighters under ARM 17.8.615;

(c) open burning authorized under the emergency open burning permit provisions in ARM 17.8.611;

(d) essential agricultural open burning;

(e) conditional air quality open burning;

(f) commercial film production open burning;

(g) Christmas tree waste open burning; and

(h) any minor open burning that is not prohibited by ARM 17.8.604 or that is allowed by ARM 17.8.606.

(2) Open burning other than those categories listed in (1) may be conducted only during the months of March through November.