9.82—Potter Valley.
(b) Approved map.
The approved maps for the Potter Valley viticultural area are the U.S.G.S. maps entitled “Potter Valley Quadrangle, California,” 1960, and “Ukiah Quadrangle, California,” 1958, 15 minute series (topographic).
(c) Boundaries.
The Potter Valley viticultural area is located in Mendocino County, California. The boundaries are as follows:
(1)
From the beginning point at the southeast corner of quadrant 36 and southwest corner of quadrant 32 (a point where Mendocino and Lake Counties border on the T. 17 N.-T. 16 N. township line), the boundary runs northwest to the northeastern corner of quadrant 4, on the T. 18 N.-T. 17 N. township line;