The EPA is approving a revision to the Minnesota State Implementation Plan (SIP) that will establish, pursuant to regulations on public hearings, an alternative public participation process for certain SIP revisions. EPA is approving the Minnesota SIP revision because we believe that the procedures set forth in Minnesota's request afford the public adequate opportunity to comment on these noncontroversial SIP revisions. In its SIP revision, Minnesota has identified a limited number of types of SIP revisions that have been found to be noncontroversial and in which the public has historically shown little or no interest. For this limited number of SIP revisions, the Minnesota Pollution Control Agency (MPCA) will offer the opportunity for a public hearing, but will not hold a hearing if one is not requested. The EPA agrees that the SIP types that have been identified by the MPCA have historically been noncontroversial and that offering the public the opportunity to request a public hearing rather than holding one automatically does not limit or curtail the public participation process. Also, EPA is acknowledging that a public hearing held at the time of the MPCA rulemaking, which meets the criteria for a SIP public hearing, precludes the need for a separate public hearing solely for SIP purposes. EPA proposed to approve these revisions to the Minnesota SIP on February 1, 2006 and no adverse comments were received on this proposal. We are also taking this opportunity to correct a typographical error made in that proposed approval.