Which of the following sub AVAs is not part of the Santa Barbara AVA?

El Pomar District is not part of the Santa Barbara AVA; instead, it is located within the Paso Robles AVA. The Santa Barbara AVA includes several sub-AVAs that contribute to the region's diverse wine offerings. Ballard Canyon and Happy Canyon are recognized sub-AVAs of Santa Barbara, known for their unique characteristics and terroir that influence the wines produced there. San Juan Creek, while lesser-known, also falls within the Santa Barbara boundaries.

In contrast, El Pomar District is situated in the Paso Robles area, which is recognized for a different climate and soil composition, leading to distinct varietals and styles of wine. The differentiation between the AVAs is crucial for understanding the unique attributes of wine regions in California, as each AVA has its own climatic conditions, geological characteristics, and viticultural practices that shape the wines produced there.