What is one of the responsibilities of the EPA under RCRA §6907?

The responsibility of the EPA under RCRA §6907 involves the establishment of waste management guidelines. This section of the Resource Conservation and Recovery Act (RCRA) mandates the EPA to develop regulations that ensure the proper management of hazardous waste. This includes creating standards for treatment, storage, and disposal of waste materials, which ultimately serves to protect human health and the environment.

Establishing waste management guidelines is critical as it provides a framework that helps waste generators, waste managers, and regulatory authorities to handle hazardous waste in a manner that minimizes risks associated with waste disposal. This responsibility highlights the EPA's role in overseeing how waste is managed from its generation all the way to its final disposal, ensuring that hazardous materials are treated safely and effectively.

In contrast, the other options reflect responsibilities that fall outside the specific focus of RCRA §6907, which is primarily concerned with waste management rather than water or air quality standards.