(a) Name. The name of the viticultural area described in this section is “Santa Maria Valley.”

(b) Approved maps. The approved maps for the Santa Maria Valley are two U.S.G.S. maps entitled:

(1) “Santa Maria”, N.I. 10-6, 9, series V 502, scale 1: 250,000; and

(2) “San Luis Obispo”, N.I. 10-3, series V 502, scale 1: 250,000.

(c) Boundaries. The boundaries of the Santa Maria Valley viticultural area are located in portions of Santa Barbara and San Luis Obispo Counties, California, and are as follows:

(1) Beginning at a point east of Orcutt where Highway U.S. 101 and the unnamed road (known locally as Clark Road) intersects; Thence northerly along U.S. 101 to a point where it intersects with Highway 166;

(2) Thence along Highway 166 in a general easterly direction to a point where Highway 166 intersects with the section line at the southwest section of Chimney Canyon;

(3) Thence in a straight, southerly, line to the summit of Los Coches Mountain (3016 feet);

(4) Thence in a straight, southeasterly, line to the summit of Bone Mountain (2822 feet);

(5) Thence in a straight, south-southwesterly, line to the intersection of two unnamed roads (known locally as Alisos Canyon Road and Foxen Canyon Road) in Foxen Canyon at the elevation marker of 1116 feet;

(6) Thence along the unnamed road (known locally as Foxen Canyon Road) in a northwesterly direction to the community of Sisquoc; and

(7) Thence in a westerly direction along the unnamed road (known locally as Clark Road) to the point of beginning.