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

(b) Approved Maps. The appropriate maps for determining the boundaries of the Benmore Valley viticultural area are two U.S.G.S. maps. They are entitled:

(1) “Hopland, CA,” 7.5 Minute Series, edition of 1960, (photoinspected 1975); and

(2) “Purdys Gardens, CA,” 7.5 Minute Series, edition of 1958, (photoinspected 1975).

(c) Boundaries. The Benmore Valley viticultural area is located in the southwest corner of Lake County, California. It lies entirely within the North Coast viticultural area. The beginning point is an unnamed peak of 2788 feet elevation found in the southeast portion of section 35, T. 14 N., R. 11 W., on the “Purdys Gardens, CA” U.S.G.S. map:

(1) Then southwest in a straight line to the point where an unnamed unimproved road crosses the south section line of section 35, T. 14 N., R. 11 W., west of Benmore Creek;

(2) Then following the unnamed unimproved road south to the intersection with the boundary between Lake and Mendocino Counties;

(3) Then following the county boundary between Lake and Mendocino Counties east and south to the intersection with the 2800 foot contour line;

(4) Then following the 2800 foot contour line in a northerly and then southernly direction to its intersection with the boundary between Lake and Mendocino Counties on the southern edge of section 2, T. 13 N., R. 11 W;

(5) Then following the boundary between Lake and Mendocino Counties east to the point of intersection of sections 1, 2, 11, and 12, T. 13 N., R. 11 W;

(6) Then southeasterly in a straight line to an unnamed peak of 2769 feet elevation in the center of section 12, T. 13 N., R. 11 W;

(7) Then south in a straight line to the point where the boundary between Lake and Mendocino Counties changes from an east-west direction to a north-south direction;

(8) Then in a straight line in an easterly direction to an unnamed peak of 2883 feet elevation in the southwestern portion of section 5, T. 13 N., R. 10 W;

(9) Then northeast in a straight line to the easternmost peak of an unnamed ridge with four peaks in the center of section 5, T. 13 N., R. 10 W;

(10) Then northerly in a straight line to an unnamed peak of 2647 feet elevation near the north section line of section 5, T. 13 N., R. 10 W;

(11) Then westerly in a straight line to the point of intersection between section 5, T. 13 N., R 10 W., section 31, T. 14 N., R. 10 W., and section 1, T. 13 N., R. 11 W;

(12) Then northwest in a straight line to an unnamed peak of 2904 feet elevation in the north portion of section 1, T. 13 N., R. 11 W;

(13) Then northwest in a straight line to an unnamed peak of 2788 feet elevation, the point of beginning.