(1)  Operational activities must meet the following standards:

(a)  if operational activities are conducted within secondary containment, the containment shall comply with ARM 4.10.1105 and must withstand the weight of any vehicles and storage containers used within the secondary containment.

(b)  a person conducting operational activities outside of secondary containment shall use at a minimum, temporary or portable catch basins under fittings or connections during pesticide transfers. An attendant must be present during all operational activities.