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

(b) Approved maps. The appropriate maps for determining the boundaries of the Anderson Valley viticultural area are three U.S.G.S. maps. They are titled:

(1) “Navarro Quadrangle, California—Mendocino Co.,” 15 minute series (1961);

(2) “Boonville Quadrangle, California—Mendocino Co.,” 15 minute series (1959); and

(3) “Ornbaun Valley Quadrangle, California,” 15 minute series (1960).

(c) Boundaries. The Anderson Valley viticultural area is located in the western part of Mendocino County, California. The beginning point is at the junction of Bailey Gulch and the South Branch North Fork Navarro River in Section 8, Township 15 North (T.15N.), Range 15 West (R.15W.), located in the northeast portion of U.S.G.S. map “Navarro Quadrangle.”

(1) From the beginning point, the boundary runs southeasterly in a straight line to an unnamed hilltop (elevation 2015 feet) in the northeast corner of Section 9, T.13N., R.13W., located in the southeast portion of U.S.G.S. map “Boonville Quadrangle”;

(2) Then southwesterly in a straight line to Benchmark (BM) 680 in Section 30, T.13N., R.13W., located in the northeast portion of U.S.G.S. map “Ornbaun Valley Quadrangle”;

(3) Then northwesterly in a straight line to the intersection of an unnamed creek and the south section line of Section 14, T.14N., R.15W., located in the southwest portion of U.S.G.S. map “Boonville Quadrangle”;

(4) Then in a westerly direction along the south section lines of Sections 14, 15, and 16, T.14N., R.15W., to the intersection of the south section line of Section 16 with Greenwood Creek, approximately .2 miles west of Cold Springs Road which is located in the southeast portion of U.S.G.S. map “Navarro Quadrangle”;

(5) Then in a southwesterly and then a northwesterly direction along Greenwood Creek to a point in Section 33 directly south (approximately 1.4 miles) of Benchmark (BM) 1057 in Section 28, T.15N., R.16W.;

(6) Then directly north in a straight line to Benchmark (BM) 1057 in Section 28, T.15N., R.16W.;

(7) Then in a northeasterly direction in a straight line to the beginning point.