What practice in Times Beach led to dioxin contamination?

What practice in Times Beach led to dioxin contamination?

• A. Spraying roads with dioxin-solvent mixture
• B. Dumping into river
• C. Burning waste
• D. Applying pesticides to crops

Answer: (A)

The key idea is that dioxin contamination in Times Beach came from spraying unpaved roads with waste oil that contained dioxin. This practice dispersed the toxin into the soil and road dust, leading to human exposure through inhalation and ingestion of contaminated dust. Dioxin is very persistent in the environment, so the contamination spread and required evacuation and soil cleanup. This explains why the other options don’t fit the incident: dumping into a river would involve waterway pollution, burning waste would release dioxin differently but isn’t what occurred here, and applying pesticides to crops relates to agricultural use rather than road-dusting on Times Beach.

The key idea is that dioxin contamination in Times Beach came from spraying unpaved roads with waste oil that contained dioxin. This practice dispersed the toxin into the soil and road dust, leading to human exposure through inhalation and ingestion of contaminated dust. Dioxin is very persistent in the environment, so the contamination spread and required evacuation and soil cleanup.

This explains why the other options don’t fit the incident: dumping into a river would involve waterway pollution, burning waste would release dioxin differently but isn’t what occurred here, and applying pesticides to crops relates to agricultural use rather than road-dusting on Times Beach.