EPA is publishing this action to provide the public with notice of the update to the North Carolina State Implementation Plan (SIP) compilation, which appears at 40 CFR 52.1770 (Subpart II). In particular, materials submitted by North Carolina that are incorporated by reference (IBR) into the North Carolina SIP are being updated to reflect EPA-approved revisions to North Carolina's SIP that have occurred since the last update. In this action EPA is also notifying the public of the correction of certain typographical errors in Table I of 40 CFR 52.1770(c).