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EPA is pursuing a regulatory change to update the available options for extraction methods for PCBs. The Agency will analyze the available information and request public comment on the extraction efficiency of other currently available PCB extraction methods in solid matrices (e.g. Automated Soxhlet Extraction (EPA Method 3541), Microwave Extraction (EPA Method 3546), Pressurized Fluid Extraction (EPA Method 3545A)), to inform the Agency's decision-making on the inclusion of additional extraction methods in the PCB regulations. EPA also plans to analyze the potential use and effectiveness of a Performance-Based Measurement System (PBMS). In addition to updating the available options for extraction methods for PCBs, the agency is also developing technical fixes for inclusion in the regulatory action. The technical fixes for inclusion in the rule will mostly be minor, technical in nature, and not intended to change or create new policy.