On September 27, 2021, the Environmental Protection Agency (EPA) issued a final rule titled ``Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements; West Mojave Desert, California.'' That publication incorrectly listed the transportation conformity budgets for the West Mojave Desert Nonattainment Area (West Mojave Desert) for the 2008 ozone NAAQS. Additionally, the regulatory text in that publication inadvertently included portions of the State's submittal addressing contingency measures for failure to attain or to make reasonable further progress (RFP). This document corrects these errors and amends the regulatory text.