The bill H. 4557 aims to establish a comprehensive framework for odor management in South Carolina by adding Chapter 63 to Title 48 of the South Carolina Code of Laws. It defines key terms related to odor complaints and mandates the Bureau of Air Quality to investigate complaints when five or more verifiable complaints are received within a 48-hour period. The bill requires facility owners to develop and submit an odor management plan if the Bureau determines that the emitted odor is objectionable, with specific guidelines for the content of these plans. Additionally, the Bureau is tasked with notifying local officials about complaints and investigations, and it has the authority to impose penalties for non-compliance.

The bill also outlines exemptions for certain operations, including on-farm agricultural activities, motor vehicles, and single-family dwellings not used for commercial purposes. Furthermore, it empowers the Bureau of Air Quality to create regulations to implement the chapter, which will include standards for what constitutes an objectionable odor and procedures for addressing complaints. Overall, the legislation seeks to enhance air quality management and address public concerns regarding odor pollution while providing a structured process for facilities to mitigate their emissions.