In what scenario is a dust palliative typically used?

A dust palliative is primarily utilized to mitigate dust emissions from unpaved surfaces. This is particularly important in environments where dust can cause health issues, reduce visibility, and affect nearby ecosystems or urban areas. The application of dust palliatives helps to bind the soil particles together, reducing their ability to become airborne under disturbance, such as traffic or wind.

In contrast, the other scenarios outlined do not appropriately align with the intended use of dust palliatives. Newly paved surfaces may not require the same interventions for dust control since they are often constructed to minimize dust generation. Similarly, while bonding agents may be used in asphalt applications, they do not serve the purpose of controlling dust on unpaved surfaces. Lastly, fog seals are a different type of treatment used primarily for sealing existing asphalt pavement rather than controlling dust from unpaved roads. Thus, option B encapsulates the primary function of dust palliatives in stabilizing unpaved surfaces effectively.