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

(b) Approved maps. The United States Geological Survey (USGS) maps used to determine the boundary of the Yakima Valley viticultural area are titled:

(1) Walla Walla, Washington (1:250,000 scale), 1953; limited revision 1963;

(2) Yakima, Washington (1:250,000 scale), 1958; revised 1971;

(3) Benton City, WA (1:24,000 scale), 2013;

(4) Badger Mountain, Washington (1:24,000 scale), 2013; and

(5) Richland, Washington (1:24,000 scale), 2014.

(c) Boundaries. The Yakima Valley viticultural area is located in Benton and Yakima Counties, Washington. The beginning point is found on the “Yakima, Washington,” U.S.G.S. map at the Wapato Dam located on the Yakima River.

(1) Then east following the crest of the Rattlesnake Hills across Elephant Mountain, Zillah Peak, High Top (elevation 3031 feet), and an unnamed mountain (elevation 3629 feet) to the Bennett Ranch;

(2) Then due east approximately 0.2 mile to the boundary of the Hanford Atomic Energy Commission Works;

(3) Then southeast following the boundary of the Hanford AEC Works along the Rattlesnake Hills to the Yakima River;

(4) Then southeast, crossing onto the Benton City map, to the top of Red Mountain;

(5) Then southeast to a point on East Kennedy Road approximately 2,500 feet east of an intermittent stream flowing north into Lost Lake;

(6) Then southeast across the top of Candy Mountain, crossing onto the Badger Mountain map, and continuing to the intersection with the southernmost point of an unnamed road known locally as Arena Road; then

(7) Proceed north for 0.45 mile along Arena Road, crossing onto the Richland map, to the intersection with the 670-foot elevation contour; then

(8) Proceed generally east for 0.4 mile along the elevation contour to the intersection with Dallas Road; then

(9) Proceed south in a straight line for 0.5 mile, crossing onto the Badger Mountain map, to the intersection with Interstate 182; then

(10) Proceed southeast in a straight line, crossing onto the Walla Walla map, to the top of Badger Mountain;

(11) Then due south for approximately 4.9 miles to the 1000 foot contour line immediately south of the Burlington Northern Railroad (indicated on map as the Northern Pacific Railroad);

(12) Then west following the 1000 foot contour line to its intersection with U.S. Highway 97 immediately west of Hembre Mountain;

(13) Then west following the Toppenish Ridge, across an unnamed mountain (elevation 2172 feet), an unnamed mountain (elevation 2363 feet), to the peak of Toppenish Mountain (elevation 3609 feet);

(14) Then northwest in straight line for approximately 9.3 miles to the lookout tower at Fort Simcoe Historical State Park;

(15) Then north in a straight line for approximately 11.7 miles to an unnamed peak, (elevation 3372 feet); and

(16) Then east following Ahtanum Ridge, crossing unnamed peaks of 2037 feet elevation, 2511 feet elevation, 2141 feet elevation, to the Wapato Dam at the point of beginning.