"U.S. Department of Transportation, Federal Highway Administration and North Carolina Department of Transportation submitted pursuant to 42 U.S.C. 4332(2)(C) and 49 USC 303"--Cover.; Includes bibliographical references.
Cover title.; "December 2006."; Supplemented by : Written public comments on the La Capra Associates, Inc. study: Analysis of a renewable portfolio standard for the state of North Carolina.; Includes bibliographical references.