SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

RULE 103. DEFINITION OF GEOGRAPHICAL AREAS
(Adopted January 9, 1976)

(a) LOS ANGELES AREA.
Beginning at the intersection of the southerly boundary of the Angeles National Forest with the easterly boundary in a general southwesterly direction to the contiguous jurisdictional limit of Los Angeles County in the Pacific Ocean;

(b) UPPER SANTA CLARA RIVER VALLEY AREA.
Beginning at the intersection of the northern boundary of Los Angeles Area with the western boundary of Los Angeles County;
thence generally northerly along the western boundary of the County of Los Angeles to its intersection with the southern boundary of the Angeles National Forest;

(c) ANTELOPE VALLEY AREA.
That portion of Los Angeles County northerly of the Angeles National Forest and the Upper Santa Clara River Valley Area.

(d) MOUNTAIN AREA OF LOS ANGELES COUNTY.
This area is composed of the two segments of the Angeles National Forest and adjoining areas of Los Angeles County not included in another Geographical Area.

(e) ISLAND AREA OF LOS ANGELES COUNTY.
This area is composed of Santa Catalina Island and San Clemente Island.

(f) SOUTHERN AREA.
That area included within the boundaries of the County of Orange.

(g) PALO VERDE AREA.
That portion of Riverside County which lies east of a line described as follows:

Beginning at the southwest corner of Section 32, T 8 S, R 20 E, S.B.B.&M., on the Riverside-Imperial County boundary;

(h) COACHELLA VALLEY AREA.
That portion of Riverside County included within the following described boundaries:

Beginning at the northwest corner of Section 6, T 2 S, R 3 E, S.B.B.&M., thence easterly along the northerly boundary of the County of Riverside to the northeast corner of Section 4, T 2 S, R 5 E;

(i) WESTERN RIVERSIDE COUNTY AREA.
That portion of Riverside County lying westerly of the Coachella Valley Area.

(j) JOSHUA TREE AREA.
That portion of Riverside County lying between the Coachella Valley Area and Palo Verde Area.

(k) SAN BERNARDINO AREA.
That portion of San Bernardino County lying southerly of the township line common to T 3 N and T 2 N and westerly of the range line common to R 3 E and R 2 E, S.B.B&M.

(l) DESERT AREA OF SAN BERNARDINO COUNTY.
That portion of San Bernardino County not included within the San Bernardino Area.

(m) REMOTE DESERT AREA.
That portion of San Bernardino and Riverside Counties which lies north and east of a line, beginning at the western boundary of San Bernardino County and running east along the line common to T 10 N and T 11 N of S.B.B.&M., to a line common to R 3 E and R 4 E; then south to a line common to T 3 N and T 2 N; then east to a line common to R ll E and R 12 E; then south to the southern boundary of Riverside County.