Definition - What does Negative Declaration mean?
A negative declaration is a declaration that a particular project or construction undertaking will have no negative impacts on a particular environment. Local governments must approve of negative declarations in order for them to be legally legitimate. These documents explain what is going to happen on the site, and why it will not harm the environment.
Justipedia explains Negative Declaration
Often, a company or another organization will want to build something on land in a city or town. In such situations, the local government will often require a negative declaration because it wants to make sure that the community will not suffer environmental damages as a result of the construction. A local government can approve or reject a negative declaration based on what it finds in the document. If it approves of the negative declaration, then an environmental impact report is not required.