In response to a petition for rulemaking submitted on behalf of local wine industry members, the Alcohol and Tobacco Tax and Trade Bureau (TTB) proposes to establish the approximately 20,046-acre "Freestone-Occidental" American viticultural area (AVA) in Sonoma County, California. The northeastern portion of the proposed AVA would partially overlap the established Russian River Valley, Northern Sonoma, and West Sonoma Coast AVAs. To avoid this partial overlap, TTB also proposes to remove the overlap region of the proposed Freestone-Occidental AVA from the established Russian River Valley and Northern Sonoma AVAs, and to expand the established West Sonoma Coast AVA to entirely encompass the proposed Freestone-Occidental AVA. The use of AVA names on wine labels, which is voluntary, allows vintners to better describe the origin of their wine and consumers to better identify the wines they may purchase.