(a) Name. The name of the viticultural area described in this section is ``Dunnigan Hills.''
(b) Approved maps. The appropriate maps for determining the boundary of the Dunnigan Hills viticultural area are three U.S.G.S. 15 minute series topographical maps of the 1:62500 scale. They are titled:
(1) ``Guinda, Calif.,'' 1959.
(2) ``Dunnigan, Calif.,'' 1953.
(3) ``Woodland, Calif.,'' 1953.
(c) Boundary. The Dunnigan Hills viticultural area is located in Yolo County, California. The boundary is as follows:
(1) The beginning point is on the Dunnigan, Calif., U.S.G.S. map at the intersection of Buckeye Creek and U.S. Route 99W just south of the Colusa-Yolo county line;
(2) From the beginning point, the boundary follows Route 99W in a southeasterly direction until an unnamed westbound light-duty road coincident with a grant boundary (referred to by the petitioner as County Road 17) diverges from Route 99W just north of the town of Yolo, California, on the Woodland, Calif., U.S.G.S. map;
(3) The boundary then follows the County Road 17 for approximately 2 miles to an unnamed southbound light duty road (referred to by the petitioner as County Road 95A);
(4) The boundary then follows County Road 95A south for approximately \1/2\ mile to an unnamed westbound light duty road (referred to by the petitioner as County Road 17A);
(5) The boundary then proceeds west along County Road 17A for approximately \3/8\ mile to an unnamed southbound light duty road (referred to by the petitioner as County Road 95);
(6) The boundary then proceeds south along County Road 95 for approximately 1 mile to an unnamed light duty road which goes in a southwesterly direction (referred to by the petitioner as County Road 19);
(7) The boundary then proceeds southwest along County Road 19 for approximately \1/4\ mile to an unnamed light duty road which travels south-southwest (referred to by the petitioner as County Road 94B);
(8) The boundary then proceeds southwest along County Road 94B approximately 1\1/4\ mile until it intersects Cache Creek;
(9) The boundary then follows Cache Creek in a westerly direction 5.5 miles until it intersects an unnamed north-south light duty road approximately 1 mile north of the city of Madison, California (referred to by the petitioner as County Road 89);
(10) The boundary then follows County Road 89 two miles in a northerly direction back on to the Dunnigan, Calif., U.S.G.S. map where it intersects an unnamed light duty road (referred to by the petitioner as County Road 16);
(11) The boundary follows County Road 16 west for approximately 2 miles onto the Guinda, Calif., U.S.G.S. map, where it turns north onto an unnamed light-duty road between sections 31 and 32 of T10N/R1W (referred to by the petitioner as County Road 87);
(12) The boundary follows County Road 87 north for 2 miles to an unnamed east-west light duty road (referred to by the petitioner as County Road 14);
(13) The boundary follows County Road 14 west for 3 miles, and then leaves the unnamed road and turns north on the dividing line between sections 22 and 23 of T11N/R2W.
(14) The boundary continues due north until it intersects Little Buckeye Creek just south of the Yolo-Colusa county line;
(15) The boundary then follows Little Buckeye Creek in an easterly direction until it joins Buckeye Creek;
(16) The boundary then follows Buckeye Creek in an easterly direction back to the point of beginning on the Dunnigan, Calif., U.S.G.S. map. [T.D. ATF-340, 58 FR 28352, May 13, 1993]