SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT

RULE 103. DEFINITION OF GEOGRAPHICAL AREAS

(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;

• thence continuing along the boundary of the County of Los Angeles (in the Pacific Ocean);
• thence in a general northerly direction along the generally westerly boundary of the County of Los Angeles to the most northerly intersection of said westerly County line with the southern boundary of Hydrographic Unit 2 of the South Coastal area as defined by the California Water Resources Board;
• thence easterly along said southern boundary to its intersection with the westerly boundary of the Angeles National Forest;
• thence southerly along the said boundary of the Angeles National Forest to its intersection with the Los Angeles City limits;
• thence in a general easterly direction along the northerly boundary of said City of Los Angeles to the southwesterly corner of Section 16, T 2 N, R 13 W, S.B.B.&M;
• thence in a general easterly direction along said southerly boundary of the Angeles National Forest to said easterly boundary of the County of Los Angeles.

(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;

• thence generally easterly along the southern boundary of the Angeles National Forest to its intersection with a line defining the drainage separation between the Santa Clara River Valley drainage area and the Antelope Valley drainage area;
• thence generally easterly along said drainage separation line to its intersection with the northerly boundary of the Angeles National Forest;
• thence generally southwesterly along the northern boundary of the Angeles National Forest to its intersection with the northern boundary of the Los Angeles Area;
• thence westward along said northern boundary of the Los Angeles Area to the said westerly boundary of the County of Los Angeles.

(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;

Then northerly along section lines to the northwest corner of

Section 5, T 7 S, R 20 E;

Then westerly along the township line to the southwest corner of

Section 31, T 6 S, R 19 E;

Then northerly along the range line to the northwest corner of

Section 6, T 5 S, R 19 E;

Then easterly along the township line to the southwest corner of

Section 33, T 4 S, R 19 E;

Then northerly along section lines to the northwest corner of

Section 4, T 4 S, R 19 E;

Then westerly along the township line to the southwest corner of

Section 32, T 3 S, R 19 E;

Then northerly along section lines to the northwest corner of

Section 17, T 3 S, R 19 E;

Then westerly along the township line to the southwest corner of

Section 7, T 3 S, R 19 E;

Then northerly along section lines to the northwest corner of

Section 30, T 2 S, R 19 E;

Then westerly along the southerly line of

Section 24, T 2 S, R 18 E, to the southwest corner thereof;

Then northerly along section lines to the northwest corner of

Section 13, T 2 S, R 18 E;

Then westerly along section lines to the southwest corner of

Section 10, T 2 S, R 18 E;

Then northerly along section lines to the Riverside-San Bernardino 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;

Then southerly along section lines to the centerline of the

Colorado River Aqueduct;

Then southeasterly along the centerline of said Colorado River Aqueduct to the southerly line of

Section 36, T 3 S, R 7 E;

Then easterly along the township line to the northeast corner of

Section 6, T 4 S, R 9 E;

Then southerly along the easterly line of Section 6 to the southeast corner thereof;

Then easterly along section lines to the northeast corner of

Section 10, T 4 S, R 9 E;

Then southerly along section lines to the southeast corner of

Section 15, T 4 S, R 9 E;

Then easterly along section lines to the northeast corner of

Section 21, T 4 S, R 10 E;

Then southerly along the easterly line of Section 21 to the southeast corner thereof;

Then easterly along the northerly line of Section 27 to the northeast corner thereof;

Then southerly along section lines to the southeast corner of

Section 34, T 4 S, R 10 E;

Then easterly along the township line to the northeast corner of

Section 2, T 5 S, R 10 E;

Then southerly along the easterly line of Section 2, to the southeast corner thereof;

Then easterly along the northerly line of Section 12 to the northeast corner thereof;

Then southerly along the range line to the southwest corner of

Section 18, T 5 S, R 11 E;

Then easterly along section lines to the northeast corner of

Section 24, T 5 S, R 11 E;

Then southerly along the range line to the southeast corner of

Section 36, T 8 S, R 11 E;

Then westerly along the southerly boundary of the County of Riverside to the southwest corner of

Section 32, T 8 S, R 8 E;

Then northerly along section lines to the northwest corner of

Section 29, T 8 S, R 8 E;

Then westerly along section lines to the southwest corner of

Section 24, T 8 S, R 7 E;

Then northerly along section lines to the northwest corner of

Section 12, T 8 S, R 7 E;

Then westerly along section lines to the southwest corner of

Section 4, T 8 S, R 7 E;

Then northerly along section lines to the northwest corner of

Section 21, T 7 S, R 7 E;

Then westerly along section lines to the southwest corner of

Section 18, T 7 S, R 7 E;

Then northerly along the range line to the northwest corner of

Section 6, T 7 S, R 7 E;

Then westerly along the township line to the southwest corner of

Section 34, T 6 S, R 6 E;

Then northerly along section lines to the northwest corner of

Section 15, T 6 S, R 6 E;

Then westerly along section lines to the southwest corner of

Section 12, T 6 S, R 5 E;

Then northerly along section lines to the northwest corner of

Section 24, T 5 S, R 5 E;

Then westerly along section lines to the southwest corner of

Section 16, T 5 S, R 4 E;

Then northerly along section lines to the northwest corner of

Section 33, T 4 S, R 4 E;

Then westerly along section lines to the southwest corner of

Section 30, T 4 S, R 4 E;

Then northerly along the range line to the southeast corner of

Section 12, T 4 S, R 3 E;

Then westerly along section lines to the southwest corner of

Section 7, T 4 S, R 3 E;

Then northerly along the range line to the Point of Beginning.

(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.