The main purpose of this legislation is to expand the Radiation Exposure Compensation Act to include additional areas affected by waste from the Manhattan Project. This Act aims to ensure that more individuals who may have been exposed to radiation due to this historical project can seek compensation for health issues related to that exposure. Key provisions of the legislation include the addition of specific ZIP Codes, namely 63106 and 63107, to the list of areas eligible for claims under the Radiation Exposure Compensation Act.