Greenhouse Gases: Emerging Standards for Impact Review

Numerous federal and state judicial decisions have established that environmental impact statements under the National Environmental Policy Act and its state equivalents should examine the impact of proposed projects on emissions of greenhouse gases. Administrative agencies and court settlements are now establishing the guidelines for the conduct of these examinations. This column surveys the emergence of these new guidelines, which is occurring against a backdrop of accelerated activity in both Congress and the U.S. Environmental Protection Agency, leading towards federal regulation of GHGs. The column looks at these guidelines on the federal level as well as within New York, California, Massachusetts, Washington, and Hawaii.