Appeal periods and litigation avenues remain after the NOD. Similar laws at the federal and state levels require environmental impact analysis before commencing major projects. NEPA, a United States federal statute passed the year before CEQA, is similar to CEQA in that both statutes set forth a policy of environmental protection, and a protocol by which all agencies in their respective jurisdictions make environmental protection part of their decision making process. NEPA is narrower in scope than CEQA. NEPA applies only to projects receiving federal funding or approval by federal agencies, while CEQA applies to projects receiving any form of state or local approval, permit, or oversight. Thus, development projects in California funded only by private sources and not requiring approval by a federal agency would be exempt from NEPA, but would likely be subject to CEQA. The environmental impact statement (EIS) required under NEPA and the EIR required under CEQA are similar documents, yet have some crucial differences. For example, under NEPA, an agency can list all reasonable alternatives and their impacts, then choose their preferred project without regard to the severity of its impacts, even if it is more harmful to the environment. Under CEQA, the lead agency is required to mitigate all "significant" adverse environmental impacts to "the maximum extent feasible" and can approve a project only if the agency adopts a Statement of Overriding Considerations detailing the specific overriding economic, legal, social, technological, or other considerations that outweigh the project's significant, unavoidable impacts. If a major federal project, or project using federal funds is seeking approval in California, its lead agency must prepare both an EIS and an EIR, but both can be combined into one document (since the EIS and EIR have the same elements for the most part). Said document, however, must be processed through both the CEQA and NEPA approval steps. As of 2005, fourteen states as well as the District of Columbia have CEQA-style laws requiring impacts be reported for projects. CEQA influenced many of these laws, and New York state's law used CEQA as a foundation. Connecticut's Environmental Policy Act (CEPA) is modeled on CEQA and requires lead agencies to prepare an Environmental Impact Evaluation (EIE) that is very similar in nature to California's EIR. The various state laws are not entirely similar to CEQA, as most only apply to public projects (rather than all public actions, like CEQA) and few have as rigorous review standards.