Which statement is correct for determining wind direction at a hazardous-material scene in another context?

Which statement is correct for determining wind direction at a hazardous-material scene in another context?

• A. Using a compass.
• B. Observing the movement of people on scene.
• C. Checking weather report from the prior day.
• D. Holding a four-foot piece of tape in the hand.

Answer: (D)

The main idea is using a simple wind indicator to see how air is moving right at the scene. A four-foot piece of tape held up into the air acts like a tiny wind vane, catching the breeze and showing the actual direction the plume could travel. This real-time cue is crucial for setting up the hot zone, locating decon, and choosing safe entry paths because contaminants move with the wind. Other methods aren’t as reliable: a compass shows geographic direction, not where the air is carrying hazard, and watching people or using yesterday’s weather won’t reflect current conditions. Tape gives a quick, practical read on wind direction, helping responders make safer, more accurate decisions on the spot.

The main idea is using a simple wind indicator to see how air is moving right at the scene. A four-foot piece of tape held up into the air acts like a tiny wind vane, catching the breeze and showing the actual direction the plume could travel. This real-time cue is crucial for setting up the hot zone, locating decon, and choosing safe entry paths because contaminants move with the wind. Other methods aren’t as reliable: a compass shows geographic direction, not where the air is carrying hazard, and watching people or using yesterday’s weather won’t reflect current conditions. Tape gives a quick, practical read on wind direction, helping responders make safer, more accurate decisions on the spot.