A construction site is preparing for a period of heavy rainfall. The site supervisor instructs equipment operators to implement additional erosion control measures. Which of the following is the most cost-effective and immediate measure for protecting exposed slopes from surface erosion in anticipation of heavy rain?

Question: A construction site is preparing for a period of heavy rainfall. The site supervisor instructs equipment operators to implement additional erosion control measures. Which of the following is the most cost-effective and immediate measure for protecting exposed slopes from surface erosion in anticipation of heavy rain?

Answer options: ✅ Applying a tackifier and straw mulch to the exposed soil.

• Installing additional sediment ponds at every drainage outflow.
• Constructing a series of check dams along the base of the slopes.
• Completely covering all exposed areas with impermeable plastic sheeting.

Correct answer: Applying a tackifier and straw mulch to the exposed soil.

Explanation: Applying straw mulch and tackifier to exposed slopes is an effective, relatively quick, and cost-efficient immediate measure for erosion control against surface runoff, providing a protective layer that slows water flow and prevents soil particle detachment, as recommended in erosion control guides.