(a)Name. The name of the viticultural area described in this section is "Mendocino."(b)Approved maps. The appropriate maps for determining the boundaries for the Mendocino viticultural area are seven U.S.G.S. maps. They are titled: (1) "Willits Quadrangle, California-Mendocino Co.," 15 minute series (1961);(2) "Potter Valley Quadrangle, California," 15 minute series (1960);(3) "Ukiah Quadrangle, California," 15 minute series (1958);(4) "Hopland Quadrangle, California," 15 minute series (1960);(5) "Boonville Quadrangle, California-Mendocino Co.," 15 minute series (1959);(6) "Navarro Quadrangle, California-Mendocino Co.," 15 minute series (1961);(7) "Ornbaun Valley Quadrangle, California," 15 minute series (1960).(c)Boundaries. The "Mendocino" viticultural area is located entirely within Mendocino County, California. The beginning point is the southeast corner of Section 30, Township 12 North (T. 12 N.), Range 10 West (R. 10 W.) located along the Mendocino County/Sonoma County line in the southeast quadrant of U.S.G.S. map "Hopland Quadrangle."(1) From the beginning point, the boundary runs north along the eastern boundary of Sections 30, 19, 18, 7 and 6 to the point labeled Jakes Cr (Jakes Creek) located at the northwest corner of Section 5, T. 12 N., R. 10 W.;(2) Thence in a straight line in a northwest direction to the point labeled Bedford Rock in Section 3, T. 13 N., R. 11 W.;(3) Thence in a straight line in a northwest direction to a point labeled Red Mtn in Section 17, T. 14 N., R. 11 W.;(4) Thence in a straight line in a northwest direction to the southeast corner of Section 25, T. 16 N., R. 11 W.;(5) Thence in a straight line in a northeast direction to the northeast corner of Section 1, T. 16 N., R. 11 W. located along the Mendocino County/Lake County line;(6) Thence in a straight line in a northwest direction to the northeast corner of Section 5, T. 17 N., R. 11 W.;(7) Thence in a westerly direction along the T. 18 N./T. 17 N. township line until it intersects with the R. 13 W./R. 12 W. range line;(8) Thence in a straight line in a southwest direction to the point labeled Eagle Rock located in Section 16, T. 15 N., R. 13 W.;(9) Thence in a straight line in a southeast direction to the point labeled Bus McGall Peak located in Section 4, T. 13 N., R. 12 W.;(10) Thence in a straight line in a westerly direction to an unnamed hilltop, elevation 2,015 feet, in the northeast corner of Section 9, T. 13 N., R. 13 W.;(11) Thence in a straight line in a northwest direction to the junction of Baily Gulch and the South Branch, North Fork of the Navarro River, located in Section 8, T.15N., R.15W.;(12) Thence in a straight line in a southwest direction to Benchmark (BM) 1057 located in Section 28, T. 15 N., R. 16 W.;(13) Thence due south in a straight line approximately 1.4 miles to Greenwood Creek located in Section 33, T. 15 N., R. 16 W.;(14) Thence following Greenwood Creek in a generally southeasterly and then a northeasterly direction to where it intersects with the south section line of Section 16, T. 14 N., R. 15 W., approximately .2 miles west of Cold Springs Road;(15) Thence in an easterly direction along the south section lines of Sections 16, 15, and 14, T. 14 N., R. 15 W., to the intersection of the south section line of Section 14 with an unnamed creek;(16) Thence in a straight line in a southeasterly direction to Benchmark (BM) 680 located in Section 30, T. 13 N., R. 13 W.;(17) Thence continuing in a straight line in a southerly direction to the southwest corner of Section 5, T. 12 N., R. 13 W., and the Mendocino County/Sonoma County line;(18) Thence continuing in a straight line in a southeasterly direction to the intersection of the southwest corner of Section 32, T. 12 N., R. 11 W., and the Mendocino County/Sonoma County line;(19) Thence following the Mendocino County/Sonoma County line in an easterly, northerly, and then an easterly direction to the beginning point.T.D. ATF-178, 49 FR 24714, 6/15/1984, as amended by T.D. ATF-397, 63 FR 16904, 4/7/1998