What types of dust suppressants are permissible under Rule 310?

• A. Only chemical suppressants
• B. Water, calcium chloride, and synthetic polymers
• C. Only natural suppressants from local plants
• D. None; only mechanical methods are allowed

Answer: (B)

The correct answer identifies specific types of dust suppressants that are permissible under Rule 310, which aims to manage and control dust emissions from various operations. This option highlights that water, calcium chloride, and synthetic polymers can be used effectively in suppressing dust.

Water is a common and easily accessible dust suppressant that can help dampen the surface to prevent particles from becoming airborne. Calcium chloride is a hygroscopic material that attracts moisture from the air, thus helping to keep surfaces moist and reduce dust without frequent applications. Synthetic polymers are specially developed chemicals that can form a film on surfaces, providing a longer-lasting dust control effect.

The inclusion of these options demonstrates the flexibility in using both natural and chemical methods for dust suppression under the regulations, ensuring effective management of dust emissions while still being mindful of environmental and health standards.

Other types of suppressants mentioned in alternative choices do not align with the regulatory framework or may lack the effectiveness or regulatory approval commonly required in such applications. Thus, acknowledging the permissible suppressants listed in the correct answer is vital for compliance with Rule 310.