The Alcohol and Tobacco Tax and Trade Bureau (TTB) is expanding the approximately 18,240-acre "Arroyo Seco" viticultural area in Monterey County, California, by approximately 90 acres. The established Arroyo Seco viticultural area and the expansion area both lie within the established Monterey viticultural area and the larger, multi-county Central Coast viticultural area. TTB designates viticultural areas to allow vintners to better describe the origin of their wines and to allow consumers to better identify wines they may purchase.