A Comment Period is the time provided for the public to review and comment on a proposed EPA action or rulemaking after publication in the Federal Register.

In the context of the environment, a "comment period" is a specific period of time during which members of the public or interested parties can provide written comments or feedback on a particular proposal or policy. Comment periods are often used as a way for government agencies and other organizations to gather input and feedback from stakeholders on a variety of environmental issues, including land use, development projects, and regulatory proposals.

Here are a few examples of how a "comment period" might be used in the context of the environment:

• Environmental impact statement (EIS): An EIS is a document that evaluates the potential environmental impacts of a particular project or activity. Federal agencies are required to prepare an EIS for certain types of projects, and they must typically provide a comment period during which the public can provide feedback on the proposed project.

• Regulatory proposal: When a government agency proposes a new regulation or policy, they may open a comment period to gather feedback from stakeholders on the proposal. For example, if the Environmental Protection Agency (EPA) proposes a new rule on air pollution they may open a comment period to allow the public to provide input on the proposal.

• Land use proposal: Local governments often have processes in place for reviewing proposals for land use changes, such as the development of a new housing development or the construction of a new highway. These proposals may include a comment period during which members of the public can provide feedback on the proposed project.