On February 20, 2015, the Ohio Environmental Protection Agency (Ohio EPA) submitted a request to the Environmental Protections Agency (EPA) to make a determination under the Clean Air Act (CAA) that the Cleveland and Delta nonattainment areas have attained the 2008 lead (Pb) national ambient air quality standard (NAAQS or standard). In this action, EPA is determining that the Cleveland and Delta nonattainment areas (hereafter also referred to as the "Cleveland area", "Delta area" or "areas") have attained the 2008 Pb NAAQS. These determinations of attainment are based upon complete, quality-assured and certified ambient air monitoring data for the 2012-2014 design period showing that the areas have monitored attainment of the 2008 Pb NAAQS. Additionally, as a result of this determination, EPA is suspending the requirements for the areas to submit attainment demonstrations, together with reasonably available control measures (RACM), reasonable further progress (RFP) plans, contingency measures for failure to meet RFP, and attainment deadlines for as long as the areas continue to attain the 2008 Pb NAAQS.