EPA is taking final action to approve a revision of the following 34 Clean Air Act (CAA) title V Operating Permits Programs in the State of California: Amador County Air Pollution Control District (APCD), Bay Area AQMD, Butte County AQMD, Calaveras County APCD, Colusa County APCD, El Dorado County APCD, Feather River AQMD, Glenn County APCD, Great Basin Unified APCD, Imperial County APCD, Kern County APCD, Lake County AQMD, Lassen County APCD, Mariposa County APCD, Mendocino County APCD, Modoc County APCD, Mojave Desert AQMD, Monterey Bay Unified APCD, North Coast Unified AQMD, Northern Sierra AQMD, Northern Sonoma County APCD, Placer County APCD, Sacramento Metro AQMD, San Diego County APCD, San Joaquin Valley Unified APCD, San Luis Obispo County APCD, Santa Barbara County APCD, Shasta County APCD, Siskiyou County APCD, South Coast AQMD, Tehama County APCD, Tuolumne County APCD, Ventura County APCD, and Yolo-Solano AQMD.