Final answer:
Hazardous waste incinerators are mandated to 3) follow strict regulations for safe disposal to protect human health and the environment. They use technologies to control emissions and must comply with the EPA's regulations under the RCRA's cradle to grave system.
Step-by-step explanation:
Hazardous waste incinerators must follow strict regulations for safe disposal. These regulations are put forth by the Environmental Protection Agency (EPA) under the Resource Conservation and Recovery Act (RCRA). The RCRA provides a framework for the management of hazardous waste from its origin to its final disposal, often referred to as the "cradle to grave" system. Therefore, incinerators do not just dispose of waste in landfills or release waste into the environment without oversight, and they certainly are not allowed to burn waste without any regulations.
Incinerators are designed to reduce the volume of hazardous waste through combustion. However, they are required to operate in a manner that minimizes the release of harmful emissions. This means incorporating advanced technologies to capture and treat the combustion gases, ensuring that pollutants are not released into the air, which could contribute to air pollution and smog. Additionally, careful monitoring and control of the incineration process are essential to prevent the release of carcinogens and other toxic substances.
Thus, the correct answer to the inquiry is that hazardous waste incinerators must adhere to strict regulations established for the protection of human health and the environment, ensuring that the waste disposal process is both effective and safe.
Hence, the correct answer is Option 3.