A bulk package (like a portable tank) containing 'Class 3 Flammable Liquid' residue must be placarded:

On all four sides (front, rear, and both sides). Section 9.3.10 & 9.5.1: All bulk packages must be placarded on all four sides.

A bulk package (like a portable tank) containing 'Class 3 Flammable Liquid' residue must be placarded:

ANSWER BREAKDOWN
  • A. Incorrect. "Only if it has more than 100 gallons of residue" is not correct. Section 9.3.10 & 9.5.1: All bulk packages must be placarded on all four sides.
  • B. Correct. Section 9.3.10 & 9.5.1: All bulk packages must be placarded on all four sides.
  • C. Incorrect. "Only on the rear" is not correct. Section 9.3.10 & 9.5.1: All bulk packages must be placarded on all four sides.
  • D. Incorrect. "Only on the two sides" is not correct. Section 9.3.10 & 9.5.1: All bulk packages must be placarded on all four sides.