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

(b) Approved maps. The appropriate maps for determining the boundaries of the Edna Valley viticultural area for four U.S.G.S. maps, They are titled:

(1) “San Luis Obispo Quadrangle, California—San Luis Obispo Co.,” 7.5 minute series;

(2) “Lopez Mtn, Quadrangle, California—San Luis Obispo Co.,” 7.5 minute series;

(3) “Pismo Beach Quadrangle, California—San Luis Obispo Co.,” 7.5 minute series; and

(4) “Arroyo Grande NE Quadrangle, California—San Luis Obispo Co.”, 7.5 minute series.

(c) Boundaries. The Edna Valley viticultural area is located in San Luis Obispo County, California. The beginning point is Cuesta Canyon County Park, located on U.S.G.S. map “San Luis Obispo Quadrangle” at the north end of Section 25, Township 30 South, Range 12 East.

(1) From the beginning point, the boundary runs southwesterly along San Luis Obispo Creek to a point .7 mile southerly of the confluence with Davenport Creek;

(2) Thence due east to the intersection with the 400-foot contour line of the northeastern flank of the San Luis Range;

(3) Thence in a generally easterly and then a southeasterly direction along this 400-foot contour line of the northeastern flank of the San Luis Range, which forms the southwestern rim of Edna Valley, to the township line identified as “T31S/T32S” on the U.S.G.S. map;

(4) Thence east along township line “T31S/T32S”, across Price Canyon to Tiber;

(5) Thence in a generally easterly direction along the 400-foot contour line of Tiber Canyon and the southern rim of Canada Verde, crossing Corbit Canyon Road and continuing along the 400-foot contour line to longitude line 120°32′30″;

(6) Thence north along longitude line 120°32′30″ to the 600-foot contour line of the southwestern flank of the Santa Lucia Mountain Range;

(7) Thence in a generally northwesterly direction along the 600-foot contour line of the southwestern flank of the Santa Lucia Range to Cuesta Canyon County Park, the beginning point.