(a) EstimatesNot later than October 1, 1993, and annually thereafter, the Secretary, in consultation with the Administrator, the Secretary of Transportation, and other appropriate State and Federal officials, shall estimate for the following calendar year—
(b) InformationBeginning on October 1, 1994, the Secretary shall annually require—
(1) fuel suppliers to report to the Secretary on the amount of each type of replacement fuel that such supplier—
(2) suppliers of alternative fueled vehicles to report to the Secretary on the number of each type of alternative fueled vehicle that such supplier—
such fuel suppliers to provide the Secretary information necessary to determine the greenhouse gas emissions from the replacement fuels used, taking into account the entire fuel cycle.
(c) Protection of information