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

(b) Approved maps. The appropriate maps for determining the boundaries are three U.S.G.S. maps. They are entitled:

(1) “Escondido Quadrangle, California—San Diego County”, 7.5 minute series;

(2) “San Pasqual Quadrangle, California—San Diego County”, 7.5 minute series;

(3) “Valley Center Quadrangle, California—San Diego County”, 7.5 minute series.

(c) Boundaries. The San Pasqual Valley viticultural area is located in San Diego County, California.

(1) From the beginning point at the intersection of Interstate 15 and the 500-foot contour line, north of the intersection of point of Interstate 15 and T.12 S./T.13 S., the boundary line follows the 500-foot contour line to;

(2) The point nearest San Pasqual Road and the 500-foot contour line, the boundary line follows the Escondido Corporate Boundary line to the 500-foot contour line on the hillock and circumnavigates said hillock back to the Escondido Corporate Boundary line and returns to the 500-foot contour line nearest to San Pasqual Road and;

(3) Continues along the 500-foot contour line completely around San Pasqual Valley to a point where the 500-foot contour line intersects with Pomerado Road, at this point, the boundary line, in a straight, northwesterly direction crosses over to;

(4) The 500-foot contour line of Battle Mountain, following the 500-foot contour line around Battle Mountain to point nearest to Interstate 15, at which point the boundary line crosses over to Interstate 15; and

(5) Continues northward along Interstate 15 to the point of beginning.