The primary purpose of CERCLA is to provide financial remedy for the cleanup of:

Mold spores are not classified as hazardous waste under CERCLA; rather, they are a natural occurrence and typically associated with indoor air quality concerns. While certain types of mold can pose health risks, they do not fall under the hazardous materials that CERCLA aims to address for site cleanup and remediation.

Electromagnetic fields (EMFs) are associated with electrical devices and power lines but are not considered hazardous waste. CERCLA does not address issues related to EMFs, as they do not involve contamination of the environment with physical or chemical substances requiring cleanup.

While radon is a radioactive gas that can pose health risks, it is naturally occurring and not classified as hazardous waste for the purposes of CERCLA. The act focuses on contaminants resulting from human activities and does not cover naturally occurring substances unless they are part of a hazardous waste scenario.