(a) Name. The name of the viticultural area described in this section is “Paso Robles Highlands District.” For purposes of part 4 of this chapter, “Paso Robles Highlands District” and “Paso Robles Highlands” are terms of viticultural significance.

(b) Approved maps. The six United States Geological Survey 1:24,000 scale topographic maps used to determine the boundary of the Paso Robles Highlands District viticultural area are titled:

(1) Camatta Ranch, CA, 1995;

(2) Wilson Corner, CA, 1995;

(3) Shedd Canyon, Calif., 1961, revised 1993;

(4) Camatta Canyon, Calif., 1961, revised 1993;

(5) Holland Canyon, Calif., 1961, revised 1993; and

(6) La Panza Ranch, CA, 1995.

(c) Boundary. The Paso Robles Highlands District viticultural area is located in San Luis Obispo County, California. The boundary of the Paso Robles Highlands District viticultural area is as described below:

(1) The beginning point is on the Camatta Ranch map along the T28S/T29S common boundary line (also concurrent with the northern boundary line of the Los Padres National Forest) at the southwest corner of section 34, T28S/R15E. From the beginning point, proceed north along the western boundary lines of sections 34 and 27, T28S/R15E, approximately 1.5 miles to the section 27 boundary line's intersection with State Route 58; then

(2) Proceed west on State Route 58 approximately 1.5 miles, crossing onto the Wilson Corner map, to the road's intersection with an unnamed light-duty road known locally as La Panza Road at Wilson Corner, section 29, T28S/R15E; then

(3) Proceed northwest on the unnamed light-duty road known locally as La Panza Road approximately 0.15 mile to the road's intersection with Indian Creek, section 20, T28S/R15E; then

(4) Proceed north-northwesterly (downstream) along the meandering Indian Creek approximately 8.5 miles in straight-line distance, crossing onto the Shedd Canyon map, to the creek's intersection with the northern boundary line of section 13, T27S/R14E, within Shedd Canyon; then

(5) Proceed east approximately 6.2 miles along the northern boundary line of section 13, T27S/R14E, and the northern boundary lines of sections 18, 17, 16, 15, 14, and 13, T27S/R15E, crossing onto the Camatta Canyon map, to the intersection of the northern boundary line of section 13, T27S/R15E, with the 1,200-foot elevation line on the western edge of the San Juan Valley; then

(6) Proceed southerly then easterly along the 1,200-foot elevation line to the elevation line's first intersection with the eastern boundary line of section 13, T27S/R15E; then

(7) Proceed south along the eastern boundary line of section 13, T27S/R15E, approximately 0.2 mile to the section 13 boundary line's second intersection with an unnamed unimproved road; then

(8) Proceed southeasterly on the unnamed unimproved road approximately 3 miles as it follows the southwestern edge of the San Juan Valley to the road's intersection with the eastern boundary line of section 29, T27S/R16E; then

(9) Proceed south along the eastern boundary line of section 29, T27S/R16E, approximately 0.3 mile to the section line's intersection with the 1,300-foot elevation line; then

(10) Proceed southeasterly along the 1,300-foot elevation line approximately 3.7 miles as it follows the southwestern edge of the San Juan Valley, crossing onto the Holland Canyon map, to the elevation line's first intersection with the eastern boundary line of section 3, T28S/R16E; then

(11) Proceed south along the eastern boundary line of section 3, T28S/R16E, approximately 0.55 mile to the section boundary line's fifth intersection with the 1,300-foot elevation line (northwest of Pear Tree Spring); then

(12) Proceed southeasterly along the 1,300-foot elevation line approximately 1.3 miles to the elevation line's intersection with an unnamed tributary of San Juan Creek (approximately 0.35 mile east of the 1,686-foot San Juan peak), section 11, T28S/R16E; then

(13) Proceed southerly in a straight line approximately 0.6 mile, crossing onto the La Panza Ranch map, to the northwestern corner of section 13, T28S/R16E; then

(14) Proceed east along the northern boundary line of section 13, T28S/R16E, approximately 0.7 mile to the section boundary line's intersection with an unnamed unimproved road; then

(15) Proceed south-southeasterly on the unnamed unimproved road approximately 0.85 mile to the road's intersection with the eastern boundary line of section 13, T28S/R16E, which is concurrent with the R16E/R17E common boundary line; then

(16) Proceed south along the R16E/R17E common boundary line approximately 3.35 miles to the southeast corner of section 36, T28S/R16E, which is concurrent with the eastern-most intersection of the R16E/R17E and T28S/T29S common boundary lines; then

(17) Proceed west along the T28S/R29S common boundary line approximately 9.1 miles, crossing onto the Camatta Ranch map, returning to the beginning point.