Environmental statements can vary in scope and depth depending on the project or organization's size and potential environmental impacts. They are often required for large-scale infrastructure projects, industrial facilities, or activities that may significantly affect the environment. The content and format of an environmental statement may be regulated by local or national environmental authorities.

The purpose of an environmental statement is to promote transparency, enable public participation, and ensure that decision-makers and stakeholders have access to relevant environmental information. By identifying potential impacts and proposing mitigation measures, environmental statements aim to support sustainable development and minimize adverse effects on the environment.