We are taking final action to amend the national emission standards for hazardous air pollutants (NESHAP) for Cellulose Products Manufacturing. This amendment will correct the date in the definition of a process change that was included in the final rule. Without this amendment, the earliest date on which changes could qualify as process changes for compliance purposes would be January 1992. With this action, process changes implemented in January 1991 and later can qualify as process changes for compliance purposes. This action corrects an error by the Agency and makes the regulatory language consistent with the technical background work that was performed during the development of the standards. Thus, it is proper to issue this final rule correction without notice and comment.