2710.91.00 - Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls (PCTs) or polybrominated biphenyls (PBBs)

This category, HTS Code 2710.91.00, specifically addresses waste oils that contain certain halogenated organic compounds. These include polychlorinated biphenyls (PCBs), polychlorinated terphenyls (PCTs), and polybrominated biphenyls (PBBs). These substances are often found in older electrical equipment, such as transformers and capacitors, and their presence in waste oil necessitates specific classification due to their hazardous nature and regulatory implications.

It is crucial to distinguish this subcategory from its sibling, 2710.99, which covers "Other" waste oils. While both fall under the broader heading of waste oils, 2710.91.00 is defined by the specific presence of PCBs, PCTs, or PBBs, whereas 2710.99 encompasses all other waste oils not meeting these criteria. This distinction is vital for accurate reporting and compliance with environmental regulations.

The subcategories within 2710.91.00 further refine the classification based on the specific contaminants and their concentration levels. 2710.91.00.10 isolates waste oils containing PCBs at a concentration of 50 mg/kg or more, indicating a higher level of concern. In contrast, 2710.91.00.50 covers oils with PCTs or PBBs, or those with PCBs below the 50 mg/kg threshold. This detailed breakdown ensures precise classification for different hazardous waste management and reporting requirements.