Area Designations for National Ambient Air Quality Standards 8-HOUR OZONE Del Norte

Siskiyou

NORTH COAST

Humboldt

NORTHEAST PLATEAU

Shasta

Trinity

±

Modoc

Tuscan Buttes

Lassen

0

50

100

150

200 Miles

Tehama Mendocino

LAKE COUNTY

Plumas

SACRAMENTO VALLEY

Nevada

Yuba Lake ColusaSutter

Sonoma Napa

SAN FRANCISCO BAY AREA

Yolo

Solano

Marin

San Francisco San Mateo

Placer

Santa Clara

Sac Amador

Merced

Madera

Fresno

SAN JOAQUIN VALLEY Kings

Monterey

SOUTH CENTRAL COAST

GREAT BASIN VALLEYS

Mono

Mariposa

Stanislaus

San Benito

Unclassified/Attainment

Alpine

Calaveras Tuolumne

Santa Cruz

NORTH CENTRAL COAST

LAKE TAHOE

El Dorado

San Contra Joaquin Costa

Alameda

MOUNTAIN COUNTIES

Sierra

Butte

Glenn

Tulare

San Luis Obispo

Kern

Santa Barbara

San Bernardino Ventura

Los Angeles

SOUTH COAST

Orange

Nonattainment

Last Reviewed: December 2015 Air Quality Planning Branch, AQPSD, CARB

SOUTHEAST DESERT

Riverside

Coachella Valley San Diego

Air Basin

County

Antelope Valley and Western Mojave Desert

Inyo

SAN DIEGO

Imperial

Area Designations for State Ambient Air Quality Standards OZONE Del Norte

Siskiyou

NORTH COAST Humboldt

Shasta

Trinity

Modoc

NORTHEAST PLATEAU

Lassen

0

±

50

100

200 Miles

Tehema

SACRAMENTO VALLEY Mendocino

Glenn

Plumas

Butte

Sierra

Colusa Yuba Sutter Lake

LAKE COUNTY

Yolo

Sonoma Napa

SAN FRANCISCO Marin BAY AREA

San Francisco San Mateo Santa Cruz

Solano

Placer

Santa Clara

Sac Amador

Alpine

Calaveras

Tuolumne Mariposa

Stanislaus Merced

Kings

San Luis Obispo

Unclassified Attainment Nonattainment-Transitional

GREAT BASIN VALLEYS

Madera

Monterey

SOUTH CENTRAL COAST

Mono

SAN JOAQUIN Fresno VALLEY

San Benito

NORTH CENTRAL COAST

LAKE TAHOE

El Dorado

San Contra Joaquin Costa

Alameda

MOUNTAIN COUNTIES

Nevada

Inyo

Tulare

Kern

Santa Barbara

San Bernardino Ventura

Los Angeles

SOUTH COAST

Orange

Nonattainment

Air Basin County

Source Date: December 2015 Air Quality Planning Branch, AQPSD

MOJAVE DESERT Riverside

San Diego

SAN DIEGO COUNTY

Imperial

SALTON SEA

Area Designations for National Ambient Air Quality Standards PM10 Del Norte

Siskiyou

Modoc

NORTHEAST PLATEAU

NORTH COAST Humboldt

Shasta

Trinity

Lassen

0

Tehema

SACRAMENTO VALLEY

LAKE COUNTY

Mendocino

Glenn

Yolo

Solano

Nevada

200 Miles

LAKE TAHOE

Placer El Dorado

Sac Amador

Alpine

Calaveras San Tuolumne Contra Joaquin Costa San Francisco Mariposa Alameda Stanislaus Santa San Mateo Clara Merced Madera Santa Cruz San Benito

NORTH CENTRAL COAST

150

MOUNTAIN COUNTIES

Sierra

Colusa Yuba Lake Sutter

SAN FRANCISCO BAY AREA Marin

100

Plumas

Butte

Sonoma Napa

±

50

Fresno

Monterey

SOUTH CENTRAL COAST

Unclassified

Sacramento County

Mono

Mono Basin Mammoth Lake GREAT

BASIN VALLEYS

Inyo

SAN JOAQUIN VALLEY

Kings

Owens Valley

Coso Junction Trona

Tulare

San Luis Obispo

Kern

Santa Barbara

Ventura

Indian Wells Valley

Los Angeles

SOUTH COAST

Orange

Attainment Nonattainment

Air Basin County

Last Reviewed: December 2015 Air Quality Planning Branch, AQPSD, CARB

San Bernardino

SOUTHEAST DESERT

Riverside

Coachella Valley

San Diego

SAN DIEGO COUNTY

Imperial

Area Designations for State Ambient Air Quality Standards PM10 Del Norte

Siskiyou

NORTH COAST Humboldt

LAKE COUNTY

Shasta

Trinity

Modoc

NORTHEAST PLATEAU

±

Lassen

0

Tehema

Mendocino

SACRAMENTO VALLEY

Lake

Colusa

SAN FRANCISCO Marin BAY AREA

San Francisco San Mateo

Sierra

Yuba

Sutter

Yolo Sonoma Napa

Solano

Santa Clara

Santa Cruz

NORTH CENTRAL COAST

Placer

LAKE TAHOE

El Dorado Sac

Alpine

Amador

Stanislaus Merced San Benito

Yosemite NP Mono

GREAT BASIN VALLEYS

Mariposa Madera

SAN JOAQUIN VALLEY Fresno

Monterey

Kings

SOUTH CENTRAL COAST

Attainment

Santa Barbara

Inyo

Tulare

San Luis Obispo

Unclassified

Kern

MOJAVE DESERT Ventura

Los Angeles

SOUTH COAST

Orange

Nonattainment

Air Basin County

Source Date: December 2015 Air Quality Planning Branch, AQPSD

200 Miles

MOUNTAIN COUNTIES

Nevada

Calaveras Contra San Tuolumne Costa Joaquin

Alameda

100

Plumas

Butte

Glenn

50

San Bernardino

Riverside

San Diego

SAN DIEGO COUNTY

Imperial

SALTON SEA

Area Designations for National Ambient Air Quality Standards PM2.5 Del Norte

Siskiyou

±

Modoc

NORTHEAST PLATEAU

NORTH COAST

0

Shasta

Humboldt Trinity

Tehama

LAKE COUNTY

Glenn

Lake Sonoma

SAN FRANCISCO BAY AREA

Sutter

Yuba

Contra Costa San Mateo

Placer

Sacramento

Solano

Marin

Calaveras

Alameda

Stanislaus

Santa Clara

Santa Cruz

LAKE TAHOE Alpine

Amador

Tuolumne

San Joaquin

NORTH CENTRAL COAST

Merced

Monterey

Mono

Mariposa Madera

SAN JOAQUIN VALLEY

SOUTH CENTRAL COAST

Inyo

Tulare

Kings

San Luis Obispo

Nonattainment

GREAT BASIN VALLEYS

Fresno

San Benito

Unclassified/Attainment

Santa Barbara

Kern San Bernardino

Ventura Los Angeles

SOUTH COAST

Orange

Air Basin

SOUTHEAST DESERT

Riverside

San Diego

County

SAN DIEGO COUNTY Last Reviewed: December 2015 Air Quality Planning Branch, AQPSD, CARB

160 Miles

MOUNTAIN COUNTIES

Sierra

El Dorado

Yolo

Napa

120

Plumas

Nevada

Colusa

80

Lassen

SACRAMENTO VALLEY Butte

Mendocino

40

Imperial

Area Designations for State Ambient Air Quality Standards PM2.5 Del Norte

Siskiyou

NORTHEAST PLATEAU

NORTH COAST Humboldt

Shasta

Trinity

Modoc

Lassen

0

Tehema

Mendocino

LAKE COUNTY

SACRAMENTO VALLEY

Lake Sonoma

SAN FRANCISCO Marin BAY AREA

Plumas

Butte

Glenn Colusa

Yuba

Sutter

Yolo Napa

Sac Amador

Alpine

Fresno

Monterey

Mono

GREAT BASIN VALLEYS

SAN JOAQUIN VALLEY

Kings

Inyo

Tulare

San Luis Obispo

County Portion of Federal Ozone AQMA

Kern

Santa Barbara

Ventura

Los Angeles

Unclassified Attainment

SOUTH COAST

Orange

Nonattainment

Air Basin County

Source Date: December 2015 Air Quality Planning Branch, AQPSD

200 Miles

LAKE TAHOE

Placer

El Dorado

SOUTH CENTRAL COAST

100

MOUNTAIN COUNTIES

Nevada

Solano Calaveras San Contra Tuolumne Costa Joaquin San Francisco Alameda Mariposa Stanislaus San Mateo Santa Merced Clara Madera Santa Cruz

NORTH CENTRAL COAST

50

Portola Valley

Sierra

San Benito

±

MOJAVE DESERT San Bernardino Riverside

San Diego

SAN DIEGO COUNTY

Calexico

Imperial

SALTON SEA

Area Designations for National Ambient Air Quality Standards CARBON MONOXIDE Del Norte

Siskiyou

Modoc

±

NORTHEAST PLATEAU

NORTH COAST Humboldt

Shasta

Trinity

0

Lassen

50

100

150

Tehama

Mendocino

SACRAMENTO VALLEY

Lake

LAKE COUNTY

Sonoma

SAN FRANCISCO BAY AREA Marin

Plumas

Nevada

Colusa Yuba Sutter Napa

San Francisco San Mateo

Placer

El Dorado

Yolo Solano

MOUNTAIN COUNTIES

Sierra

Butte

Glenn

Sac Amador

LAKE TAHOE Alpine

Calaveras San Contra Tuolumne Joaquin Costa Alameda Stanislaus Mariposa

Santa Cruz

Santa Clara

Merced

Madera

SAN JOAQUIN

San Benito

NORTH CENTRAL COAST

Fresno VALLEY Kings

Monterey

SOUTH CENTRAL COAST

Unclassified/Attainment

GREAT BASIN VALLEYS

Mono

Inyo

Tulare

San Luis Obispo

Kern

Santa Barbara

SOUTHEAST DESERT Ventura

Los Angeles

SOUTH COAST

Orange

Nonattainment Air Basin

County

Last Reviewed: December 2015 Air Quality Planning Branch, AQPSD, CARB

San Bernardino

Riverside

San Diego

SAN DIEGO COUNTY

Imperial

200 Miles

Area Designations for State Ambient Air Quality Standards CARBON MONOXIDE Del Norte

Siskiyou

NORTH COAST Humboldt

NORTHEAST PLATEAU Shasta

Trinity

Modoc

±

Lassen

0

Tehema

SACRAMENTO VALLEY

LAKE COUNTY Mendocino

Lake Sonoma Marin

SAN FRANCISCO BAY AREA San Francisco

Colusa Yolo Napa

Solano

Contra Costa

Alpine

Calaveras San Tuolumne Joaquin

Santa Cruz

NORTH CENTRAL COAST

LAKE TAHOE

Placer

Sac Amador

Santa Clara

Mariposa

Stanislaus Merced San Benito

Attainment

Nonattainment-Transitional

Text

GREAT BASIN VALLEYS

SAN JOAQUIN VALLEY

Fresno

Monterey

SOUTH CENTRAL COAST

Mono

Madera

Kings San Luis Obispo

Unclassified

Inyo

Tulare

Kern

Santa Barbara

MOJAVE DESERT Ventura

Los Angeles

SOUTH COAST

Orange

Nonattainment Air Basin County

Source Date: December 2015 Air Quality Planning Branch, AQPSD

200 Miles

MOUNTAIN COUNTIES

Nevada El Dorado

Alameda

San Mateo

Sierra

Yuba

Sutter

100

Plumas

Butte

Glenn

50

San Bernardino

Riverside

San Diego

SAN DIEGO COUNTY

Imperial

SALTON SEA

Area Designations for National Ambient Air Quality Standards NITROGEN DIOXIDE Del Norte

Siskiyou

Modoc

NORTHEAST PLATEAU

NORTH COAST Humboldt

Shasta

Trinity

Lassen

Tehema

LAKE COUNTY

Lake Sonoma

Sierra

Butte

SAN FRANCISCO BAY AREA Marin

Yuba Sutter

San Francisco San Mateo

Placer

El Dorado

Yolo Solano

NORTH CENTRAL COAST

150

200 Miles

Sac Amador

LAKE TAHOE

Alpine

Calaveras San Contra Tuolumne Joaquin Costa Alameda Stanislaus Mariposa

Santa Cruz

100

MOUNTAIN COUNTIES

Nevada

Colusa

Napa

50

Plumas

SACRAMENTO VALLEY Mendocino Glenn

0

±

Santa Clara

Merced

GREAT BASIN VALLEYS

Madera

SAN JOAQUIN VALLEY Fresno

San Benito

Kings

Monterey

SOUTH CENTRAL COAST

Mono

Inyo

Tulare

San Luis Obispo

Kern

Santa Barbara

SOUTHEAST DESERT Ventura

Los Angeles

SOUTH COAST

Orange

Unclassified/Attainment

Last Reviewed: December 2015 Air Quality Planning Branch, AQPSD, CARB

Riverside

San Diego

Air Basin

County

San Bernardino

SAN DIEGO COUNTY

Imperial

Area Designations for State Ambient Air Quality Standards NITROGEN DIOXIDE Del Norte

Siskiyou

NORTH COAST Humboldt

NORTHEAST PLATEAU

Shasta

Trinity

Modoc

Lassen

0

Tehema

SACRAMENTO VALLEY Mendocino

LAKE COUNTY

Lake

Colusa

Sutter

SAN FRANCISCO BAY AREA Marin

San Francisco San Mateo

Sac

Solano

Contra Costa

Santa Clara

El Dorado Amador

Alpine

Stanislaus Merced

Nonattainment

GREAT BASIN VALLEYS

Madera

Fresno

SAN JOAQUIN VALLEY

Kings San Luis Obispo

SOUTH CENTRAL COAST

Mono

Mariposa

Monterey

Attainment

Inyo

Tulare

Kern

MOJAVE DESERT

Santa Barbara

Ventura

Los Angeles

SOUTH COAST

Orange

Source Date: December 2015 Air Quality Planning Branch, AQPSD

San Bernardino

Riverside

San Diego

Air Basin County

200 Miles

LAKE TAHOE

Placer

San Benito

NORTH CENTRAL COAST

100

MOUNTAIN COUNTIES

Nevada

Calaveras San Tuolumne Joaquin

Alameda

Santa Cruz

Sierra

Yuba

Yolo Napa Sonoma

50

Plumas

Butte

Glenn

±

SAN DIEGO COUNTY

Imperial

SALTON SEA

Area Designations for National Ambient Air Quality Standards SULFUR DIOXIDE Del Norte

Siskiyou

NORTHEAST PLATEAU

NORTH COAST Humboldt

Shasta

Trinity

LAKE COUNTY

Lake

Yuba Sutter

SAN FRANCISCO BAY AREA Marin

San Francisco San Mateo

Yolo

Nevada Placer

El Dorado

Sac Amador

150

200 Miles

Alpine

Alameda Stanislaus Mariposa Santa Merced Clara

NORTH CENTRAL COAST

100

LAKE TAHOE

Solano San Calaveras Contra Tuolumne Joaquin Costa

Santa Cruz

50

MOUNTAIN COUNTIES

Sierra

Butte

Colusa

Napa Sonoma

0

Plumas

SACRAMENTO VALLEY Glenn

±

Lassen

Tehema

Mendocino

Modoc

Mono

GREAT BASIN VALLEYS

Madera

SAN JOAQUIN VALLEY

San Benito

Fresno

Monterey

SOUTH CENTRAL COAST

Kings

San Luis Obispo

Inyo

Tulare

Kern

Santa Barbara

SOUTHEAST DESERT Ventura Los Angeles San Bernardino

Unclassified Attainment

SOUTH COAST

Orange

Air Basin County

Last Reviewed: December 2015 Air Quality Planning Branch, AQPSD, CARB

Riverside

San Diego

SAN DIEGO COUNTY

Imperial

Area Designations for State Ambient Air Quality Standards SULFUR DIOXIDE Del Norte

Siskiyou

NORTH COAST Humboldt

Shasta

Trinity

± 0

Lassen

50

100

Tehema

SACRAMENTO VALLEY LAKE COUNTY

Modoc

NORTHEAST PLATEAU

Mendocino

Glenn

Lake

Plumas

Butte

Sierra

Colusa Yuba Sutter Yolo

Sonoma Napa

SAN FRANCISCO Marin BAY AREA

MOUNTAIN COUNTIES

Nevada

LAKE TAHOE

Placer El Dorado

Sac Amador

Alpine

Solano Calaveras San Contra Tuolumne Costa Joaquin San Francisco Mariposa Alameda Stanislaus San Mateo Santa Clara Merced Madera Santa Cruz

GREAT BASIN VALLEYS

Fresno

Monterey

Kings

San Luis Obispo

SOUTH CENTRAL COAST

Mono

SAN JOAQUIN VALLEY

San Benito

NORTH CENTRAL COAST

Inyo

Tulare

Kern

Santa Barbara

MOJAVE DESERT Ventura

Los Angeles

SOUTH COAST

Orange

Attainment

Air Basin County

Source Date: December 2015 Air Quality Planning Branch, AQPSD

200 Miles

San Bernardino

Riverside

San Diego

SAN DIEGO COUNTY

Imperial

SALTON SEA