Section 9.153 - Redwood Valley(a)Name. The name of the viticultural area described in this section is "Redwood Valley."(b)Approved maps. The appropriate maps for determining the boundary of the Redwood Valley viticultural area are four Quadrangle 7.5 minute series 1:24,000 scale U.S.G.S. topographical maps. They are titled: (1) Redwood Valley, Calif., 1960, photorevised 1975;(2) Ukiah, Calif., 1958, photorevised 1975;(3) Laughlin Range, Calif., 1991;(4) Orrs Springs, California, provisional edition, 1991.(c)Boundary. The Redwood Valley viticultural area is located in the east central interior portion of Mendocino County, California. The boundaries of the Redwood Valley viticultural area, using landmarks and points of reference found on appropriate U.S.G.S. maps, are: (1) The beginning point is the intersection of State Highway 20 with the eastern boundary of Section 13, T16N/R12W located in the extreme northeast portion of the U.S.G.S. map, "Ukiah, Calif.";(2) Then north along the east boundary line of Sections 12 and 1 to the northeast corner of Section 1, T16N/R12W on the U.S.G.S. map, "Redwood Valley, Calif.";(3) Then west along the northern boundary line of Section 1 to the northwest corner of Section 1, T16N/R12W;(4) Then north along the east boundary line of sections 35, 26, 23, 14, 11, and 2 to the northeast corner of Section 2, T17N/R12W;(5) Then west along the northern boundary of Sections 2, 3, 4, 5, and 6 to the northwest corner of Section 6, T17N/R12W;(6) Then 10 degrees southwest cutting diagonally across Sections 1, 12, 13 ,24, 25, and 36 to a point at the northwest corner of Section 1, T16N/R13W on the U.S.G.S. map, "Laughlin, Range, Calif.";(7) Then south along the western boundary line of Sections 1 and 12 to the southwest corner of Section 12, T16N/R13W;(8) Then 13 degrees southeast across Sections 13, 18, and 17 to the intersection of State Highway 20 and U.S. Highway 101, T16N/R12W on the U.S.G.S. map, Ukiah, Calif."; and(9) Then easterly along a line following State Highway 20 back to the beginning point at the eastern boundary of Section 13, T16N/R12W located in the extreme northeast portion of the U.S.G.S. map "Ukiah, Calif."T.D. ATF-386, 61 FR 67466, 12/23/1996