Quality Assurance Sitelist
The following are sites that have been audited by the Quality Assurance Section.
You can get the specifics for each of these sites by clicking on the name or highlighted area.
| CARB Site Number | Site Name | County | Agency | Active? |
|---|---|---|---|---|
| 80128 | Alpine-Victoria Drive | San Diego | San Diego County APCD | Yes |
| 30031 | Anaheim - Near Road | Orange | South Coast AQMD | Yes |
| 30178 | Anaheim-Loara School | Orange | South Coast AQMD | Yes |
| 17720 | Anderson Springs | Lake | Lake County AQMD | Yes |
| 45567 | Anderson-North Street | Shasta | Shasta County AQMD | Yes |
| 15249 | Arvin - Di Giorgio | Kern | California Air Resources Board | Yes |
| 15247 | Arvin-Bear Mountain Blvd | Kern | California Air Resources Board | No |
| 70042 | AT&SF (Exide) | Los Angeles | South Coast AQMD | Yes |
| 40848 | Atascadero Lift Station #5 | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 40847 | Atascadero-Lewis Avenue | San Luis Obispo | San Luis Obispo County APCD | No |
| 31815 | Auburn - Atwood Rd | Placer | Placer County APCD | Yes |
| 31813 | Auburn - Dewitt - C Avenue | Placer | Placer County APCD | No |
| 70060 | Azusa | Los Angeles | South Coast AQMD | No |
| 15258 | Bakersfield - Airport | Kern | California Air Resources Board | Yes |
| 15257 | Bakersfield - Municipal Airport | Kern | San Joaquin Valley Unified APCD | Yes |
| 15259 | Bakersfield - Westwind | Kern | San Joaquin Valley Unified APCD | Yes |
| 15255 | Bakersfield-California Avenue | Kern | California Air Resources Board | Yes |
| 15256 | Bakersfield-Golden | Kern | San Joaquin Valley Unified APCD | Yes |
| 33164 | Banning-Airport | Riverside | South Coast AQMD | Yes |
| 36155 | Barstow | San Bernardino | Mojave Desert AQMD | Yes |
| 07436 | Berkeley - Aquatic Park | Alameda | Bay Area AQMD | Yes |
| 07435 | Berkeley-6th & Camelia | Alameda | Bay Area AQMD | No |
| 07442 | Bethel Island Road | Contra Costa | Bay Area AQMD | Yes |
| 36001 | Big Bear | San Bernardino | South Coast AQMD | Yes |
| 33201 | Blythe-Murphy Street | Riverside | California Air Resources Board | Yes |
| 13601 | Bombay Beach | Imperial | Imperial Irrigation District | Yes |
| 13701 | Brawley-Main Street #2 | Imperial | Imperial County APCD | Yes |
| 70069 | Burbank | Los Angeles | South Coast AQMD | No |
| 13700 | Calexico-East | Imperial | California Air Resources Board | No |
| 13698 | Calexico-Ethel Street | Imperial | California Air Resources Board | Yes |
| 13695 | Calexico-Grant Street | Imperial | Imperial County APCD | No |
| 80198 | Camp Pendleton | San Diego | San Diego County APCD | Yes |
| 15310 | Canebrake | Kern | Eastern Kern APCD | Yes |
| 27550 | Carmel Valley-Ford Road | Monterey | Monterey Bay Unified APCD | Yes |
| 42402 | Carpinteria-Gobernador Road | Santa Barbara | Santa Barbara County APCD | Yes |
| 40990 | Carrizo Plains | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 40853 | CDF - Arroyo Grande | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 32823 | Chester | Plumas | Northern Sierra AQMD | Yes |
| 04625 | Chico - East Avenue | Butte | California Air Resources Board | Yes |
| 04628 | Chico-Manzanita | Butte | California Air Resources Board | No |
| 80114 | Chula Vista | San Diego | San Diego County APCD | Yes |
| 70043 | Closet World (Quemetco) | Los Angeles | South Coast AQMD | Yes |
| 49886 | Cloverdale | Sonoma | Northern Sonoma County APCD | Yes |
| 10248 | Clovis-N Villa Avenue | Fresno | San Joaquin Valley Unified APCD | Yes |
| 31818 | Colfax-City Hall | Placer | Placer County APCD | Yes |
| 06646 | Colusa-Sunrise Blvd | Colusa | California Air Resources Board | Yes |
| 70112 | Compton | Los Angeles | South Coast AQMD | Yes |
| 07448 | Concord | Contra Costa | Bay Area AQMD | Yes |
| 09693 | Cool (seasonal) | El Dorado | California Air Resources Board | Yes |
| 16719 | Corcoran-Patterson Avenue | Kings | San Joaquin Valley Unified APCD | Yes |
| 14720 | Coso Junction - Blast | Inyo | Great Basin Unified APCD | No |
| 14724 | Coso Junction - Gate | Inyo | Great Basin Unified APCD | Yes |
| 14696 | Coso Junction - Hwy. 395 | Inyo | Great Basin Unified APCD | Yes |
| 14718 | Coso Junction - Navy 1 | Inyo | Great Basin Unified APCD | No |
| 30195 | Costa Mesa-Mesa Verde Drive | Orange | South Coast AQMD | No |
| 08659 | Crescent City - Crescent Elk School | Del Norte | North Coast Unified AQMD | Yes |
| 08657 | Crescent City - Northcrest | Del Norte | North Coast Unified AQMD | No |
| 07437 | Crockett-Kendall Avenue | Contra Costa | Bay Area AQMD | Yes |
| 44851 | Davenport | Santa Cruz | Monterey Bay Unified APCD | No |
| 57577 | Davis-UCD Campus | Yolo | California Air Resources Board | Yes |
| 14151 | Death Valley NP - Park Village | Inyo | National Park Service (NPS) | Yes |
| 80133 | Del Mar - Winston School | San Diego | San Diego County APCD | No |
| 14022 | Dirty Socks | Inyo | Great Basin Unified APCD | Yes |
| 09695 | Echo Summit (seasonal) | El Dorado | California Air Resources Board | Yes |
| 15242 | Edison | Kern | California Air Resources Board | Yes |
| 80132 | El Cajon - Floyd Smith Drive | San Diego | San Diego County APCD | No |
| 80135 | El Cajon - Lexington Elementary School | San Diego | San Diego County APCD | Yes |
| 80131 | El Cajon-Redwood Avenue | San Diego | San Diego County APCD | No |
| 42370 | El Capitan Beach | Santa Barbara | Santa Barbara County APCD | No |
| 13694 | El Centro-9th Street | Imperial | Imperial County APCD | Yes |
| 56436 | El Rio-Rio Mesa School #2 | Ventura | Ventura County APCD | Yes |
| 34310 | Elk Grove - Bruceville Road | Sacramento | Sacramento Metropolitan AQMD | Yes |
| 80115 | Escondido-E Valley Parkway | San Diego | San Diego County APCD | No |
| 12503 | Eureka - 6th & I | Humboldt | North Coast Unified AQMD | No |
| 12507 | Eureka - Humboldt Hill | Humboldt | North Coast Unified AQMD | No |
| 12505 | Eureka - Jacobs Ave. | Humboldt | North Coast Unified AQMD | Yes |
| 48880 | Fairfield-Chadbourne | Solano | Bay Area AQMD | Yes |
| 44857 | Felton AMS | Santa Cruz | Monterey Bay Unified APCD | No |
| 14024 | Flat Rock | Inyo | Great Basin Unified APCD | Yes |
| 34311 | Folsom-Natoma Street | Sacramento | Sacramento Metropolitan AQMD | Yes |
| 36197 | Fontana-Arrow Highway | San Bernardino | South Coast AQMD | Yes |
| 21457 | Forest Knolls | Marin | Bay Area AQMD | Yes |
| 23758 | Fort Bragg - 300 Dana Street | Mendocino | Mendocino County AQMD | Yes |
| 23756 | Fort Bragg-N Franklin Street | Mendocino | Mendocino County AQMD | No |
| 21454 | Fort Cronkhite | Marin | Bay Area AQMD | Yes |
| 60336 | Fremont-Chapel Way | Alameda | Bay Area AQMD | No |
| 10244 | Fresno - Drummond | Fresno | San Joaquin Valley Unified APCD | Yes |
| 10246 | Fresno - First Street | Fresno | California Air Resources Board | No |
| 10252 | Fresno - Foundry Park | Fresno | San Joaquin Valley Unified APCD | Yes |
| 10251 | Fresno - Garland | Fresno | California Air Resources Board | Yes |
| 10025 | Fresno - Pacific | Fresno | San Joaquin Valley Unified APCD | Yes |
| 10245 | Fresno - Skypark | Fresno | San Joaquin Valley Unified APCD | Yes |
| 42399 | Gaviota - Nojoqui | Santa Barbara | Santa Barbara County APCD | No |
| 43389 | Gilroy-9th Street | Santa Clara | Bay Area AQMD | Yes |
| 17728 | Glenbrook | Lake | Lake County AQMD | Yes |
| 70591 | Glendora-Laurel | Los Angeles | South Coast AQMD | Yes |
| 42404 | Goleta-Fairview | Santa Barbara | Santa Barbara County APCD | Yes |
| 29800 | Grass Valley-Litton Building | Nevada | Northern Sierra AQMD | Yes |
| 04636 | Gridley | Butte | California Air Resources Board | Yes |
| 40844 | Grover Beach-Lesage Drive | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 49895 | Guerneville-Church and 1st | Sonoma | Northern Sonoma County APCD | Yes |
| 16716 | Hanford-S Irwin Street | Kings | San Joaquin Valley Unified APCD | Yes |
| 60337 | Hayward | Alameda | Bay Area AQMD | Yes |
| 49999 | Healdsburg - Limmerick Ln | Sonoma | Northern Sonoma County APCD | No |
| 49898 | Healdsburg - Matheson | Sonoma | Northern Sonoma County APCD | Yes |
| 49899 | Healdsburg-Municipal Airport | Sonoma | Northern Sonoma County APCD | No |
| 36201 | Hesperia-Olive Street | San Bernardino | Mojave Desert AQMD | Yes |
| 17725 | Hobergs-Pine Summit | Lake | Lake County AQMD | Yes |
| 35823 | Hollister-Fairview Road | San Benito | Monterey Bay Unified APCD | Yes |
| 10247 | Huron - 4th Street | Fresno | San Joaquin Valley Unified APCD | Yes |
| 33157 | Indio-Jackson Street | Riverside | South Coast AQMD | Yes |
| 03614 | Jackson-Clinton Road | Amador | California Air Resources Board | Yes |
| 22744 | Jerseydale | Mariposa | California Air Resources Board | Yes |
| 36152 | Joshua Tree NP - Black Rock | San Bernardino | National Park Service (NPS) | Yes |
| 36150 | Joshua Tree NP - Cottonwood | Riverside | National Park Service (NPS) | No |
| 36154 | Joshua Tree NP - Cottonwood #2 | Riverside | National Park Service (NPS) | Yes |
| 36151 | Joshua Tree NP - Pinto Wells | Riverside | National Park Service (NPS) | Yes |
| 14728 | Keeler-Cerro Gordo Road | Inyo | Great Basin Unified APCD | Yes |
| 27551 | King City | Monterey | Monterey Bay Unified APCD | No |
| 27555 | King City - Pearl | Monterey | Monterey Bay Unified APCD | Yes |
| 30177 | La Habra | Orange | South Coast AQMD | Yes |
| 33158 | Lake Elsinore-W Flint Street | Riverside | South Coast AQMD | Yes |
| 36181 | Lake Gregory (Crestline) | San Bernardino | South Coast AQMD | Yes |
| 17715 | Lakeport - S. Main Street | Lake | Lake County AQMD | Yes |
| 17713 | Lakeport-Lakeport Blvd | Lake | Lake County AQMD | No |
| 70303 | Lancaster - Fairgrounds | Los Angeles | Antelope Valley AQMD | Yes |
| 70301 | Lancaster-Division Street | Los Angeles | Antelope Valley AQMD | No |
| 70096 | Lancaster-W Ponderosa Street | Los Angeles | Antelope Valley AQMD | No |
| 60351 | Laney College | Alameda | Bay Area AQMD | Yes |
| 42101 | Las Flores Canyon #1 | Santa Barbara | Santa Barbara County APCD | Yes |
| 42037 | Las Flores Canyon-Odor site | Santa Barbara | Santa Barbara County APCD | Yes |
| 45566 | Lassen Volcanic National Park | Shasta | National Park Service (NPS) | Yes |
| 47872 | Lava Beds | Siskiyou | Siskiyou County APCD | No |
| 10240 | Lebec | Kern | San Joaquin Valley Unified APCD | Yes |
| 15990 | Lebec - Peace Valley Rd. | Los Angeles | California Air Resources Board | No |
| 26779 | Lee Vining-SMS | Mono | Great Basin Unified APCD | Yes |
| 31817 | Lincoln - 1445 1st St. | Placer | Placer County APCD | No |
| 31816 | Lincoln - 204 L St. | Placer | Placer County APCD | No |
| 31811 | Lincoln - 2885 Moore Road | Placer | Placer County APCD | Yes |
| 60344 | Livermore - Rincon | Alameda | Bay Area AQMD | Yes |
| 14733 | Lizard Tail | Inyo | Great Basin Unified APCD | Yes |
| 39901 | Lodi Diesel-East | San Joaquin | Imperial Irrigation District | No |
| 39900 | Lodi Diesel-West | San Joaquin | Imperial Irrigation District | No |
| 42394 | Lompoc-HS&P | Santa Barbara | Santa Barbara County APCD | Yes |
| 42098 | Lompoc-Odor | Santa Barbara | Santa Barbara County APCD | Yes |
| 42381 | Lompoc-South H Street | Santa Barbara | Santa Barbara County APCD | Yes |
| 14701 | Lone Pine | Inyo | Great Basin Unified APCD | Yes |
| 14700 | Lone Pine Sewer Ponds | Inyo | Great Basin Unified APCD | No |
| 14699 | Lone Pine-E Locust Street | Inyo | Great Basin Unified APCD | No |
| 70073 | Long Beach - Hudson | Los Angeles | South Coast AQMD | No |
| 70032 | Long Beach - Route 710 Near Road | Los Angeles | South Coast AQMD | Yes |
| 70033 | Long Beach - Signal Hill | Los Angeles | South Coast AQMD | Yes |
| 70111 | Los Angeles - LAX | Los Angeles | South Coast AQMD | Yes |
| 70091 | Los Angeles - VA Hospital | Los Angeles | South Coast AQMD | Yes |
| 70087 | Los Angeles-North Main Street | Los Angeles | South Coast AQMD | Yes |
| 43380 | Los Gatos | Santa Clara | Bay Area AQMD | Yes |
| 42395 | Los Padres National Forest | Santa Barbara | Santa Barbara County APCD | Yes |
| 46854 | Loyalton-W 3rd Street | Sierra | Northern Sierra AQMD | No |
| 36208 | Lucerne Valley - Middle School | San Bernardino | Mojave Desert AQMD | Yes |
| 70084 | Lynwood | Los Angeles | South Coast AQMD | No |
| 20211 | Madera - Pump Yard | Madera | San Joaquin Valley Unified APCD | Yes |
| 10241 | Madera City | Madera | San Joaquin Valley Unified APCD | Yes |
| 26785 | Mammoth Lakes-Gateway HC | Mono | Great Basin Unified APCD | Yes |
| 24531 | Manteca AMS | San Joaquin | San Joaquin Valley Unified APCD | Yes |
| 15246 | Maricopa | Kern | San Joaquin Valley Unified APCD | Yes |
| 07434 | Martinez-Jones Street | Contra Costa | Bay Area AQMD | Yes |
| 33033 | Mecca - Saul Martinez | Riverside | South Coast AQMD | Yes |
| 24528 | Merced - Coffee Road | Merced | San Joaquin Valley Unified APCD | Yes |
| 24510 | Merced M Street | Merced | San Joaquin Valley Unified APCD | Yes |
| 14734 | Mill | Inyo | Great Basin Unified APCD | Yes |
| 33163 | Mira Loma - Bellegrave | Riverside | South Coast AQMD | No |
| 33165 | Mira Loma-Van Buren | Riverside | South Coast AQMD | Yes |
| 30002 | Mission Viejo | Orange | South Coast AQMD | Yes |
| 50568 | Modesto-14th Street | Stanislaus | California Air Resources Board | Yes |
| 15252 | Mojave | Kern | California Air Resources Board | No |
| 15251 | Mojave - CA 58 Business | Kern | California Air Resources Board | No |
| 15254 | Mojave - Pat Avenue | Kern | California Air Resources Board | Yes |
| 36153 | Mojave National Preserve - Kelso | San Bernardino | National Park Service (NPS) | Yes |
| 26011 | Mono Lake - North Shore | Mono | Great Basin Unified APCD | Yes |
| 26782 | Mono Lake-Simis Residence | Mono | Great Basin Unified APCD | No |
| 40833 | Morro Bay | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 40831 | Morro Bay - Kings Ave | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 47853 | Mt. Shasta - Cedar Street | Siskiyou | Siskiyou County APCD | Yes |
| 47871 | Mt. Shasta - Old Stage Road | Siskiyou | Siskiyou County APCD | No |
| 70061 | Mt. Wilson | Los Angeles | California Air Resources Board | No |
| 28785 | Napa Valley College | Napa | Bay Area AQMD | Yes |
| 28783 | Napa-Jefferson Avenue | Napa | Bay Area AQMD | No |
| 13603 | Naval Test Base | Imperial | Imperial Irrigation District | Yes |
| 13997 | Niland-English Road | Imperial | Imperial County APCD | Yes |
| 40852 | Nipomo - Regional Park | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 40849 | Nipomo-Guadalupe Road | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 40991 | Nipomo-Hillview | San Luis Obispo | San Luis Obispo County APCD | No |
| 33155 | Norco | Riverside | South Coast AQMD | Yes |
| 14727 | North Beach Owens Lake | Inyo | Great Basin Unified APCD | Yes |
| 34294 | North Highlands-Blackfoot Way | Sacramento | Sacramento Metropolitan AQMD | No |
| 70034 | North Hollywood | Los Angeles | South Coast AQMD | Yes |
| 70072 | North Long Beach (Long Beach) | Los Angeles | South Coast AQMD | Yes |
| 60347 | Oakland - East | Alameda | Bay Area AQMD | Yes |
| 60349 | Oakland - West | Alameda | Bay Area AQMD | Yes |
| 60345 | Oakland-Filbert Street | Alameda | Bay Area AQMD | No |
| 15243 | Oildale | Kern | California Air Resources Board | Yes |
| 56172 | Ojai - East Ojai Av | Ventura | Ventura County APCD | Yes |
| 14735 | Olancha - Well 404 | Inyo | Great Basin Unified APCD | Yes |
| 14729 | Olancha-Walker Creek | Inyo | Great Basin Unified APCD | No |
| 36035 | Ontario - Near Road (Etiwanda) | San Bernardino | South Coast AQMD | Yes |
| 36036 | Ontario - Route 60 Near Road | San Bernardino | South Coast AQMD | Yes |
| 36025 | Ontario-Fire Station | San Bernardino | South Coast AQMD | No |
| 40854 | Oso Flaco Site | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 80139 | Otay Mesa | San Diego | San Diego County APCD | No |
| 80140 | Otay Mesa - Donovan Correctional Facility | San Diego | San Diego County APCD | Yes |
| 14730 | Owens Lake-Ash Point-Stanley | Inyo | Great Basin Unified APCD | Yes |
| 33137 | Palm Springs-Fire Station | Riverside | South Coast AQMD | Yes |
| 80117 | Palomar Airport | San Diego | San Diego County APCD | Yes |
| 04638 | Paradise - Airport | Butte | California Air Resources Board | Yes |
| 04631 | Paradise - Birch | Butte | Butte County AQMD | No |
| 04641 | Paradise - Clark Rd | Butte | California Air Resources Board | No |
| 04633 | Paradise - Theater | Butte | California Air Resources Board | Yes |
| 10230 | Parlier | Fresno | San Joaquin Valley Unified APCD | Yes |
| 10231 | Parlier-Tuolumne | Fresno | California Air Resources Board | No |
| 70088 | Pasadena | Los Angeles | South Coast AQMD | Yes |
| 40850 | Paso Robles | San Luis Obispo | California Air Resources Board | Yes |
| 60342 | Patterson Pass | Alameda | Bay Area AQMD | No |
| 33149 | Perris | Riverside | South Coast AQMD | No |
| 36207 | Phelan-Beekley Road & Phelan R | San Bernardino | Mojave Desert AQMD | Yes |
| 70185 | Pico Rivera #2 | Los Angeles | South Coast AQMD | Yes |
| 35824 | Pinnacles National Monument | San Benito | National Park Service (NPS) | Yes |
| 56450 | Piru - Pacific | Ventura | Ventura County APCD | Yes |
| 07430 | Pittsburg-10th Street | Contra Costa | Bay Area AQMD | No |
| 09697 | Placerville - Canal Street | El Dorado | California Air Resources Board | Yes |
| 09690 | Placerville-Gold Nugget Way | El Dorado | California Air Resources Board | No |
| 60353 | Pleasanton - Owens Ct. | Alameda | Bay Area AQMD | Yes |
| 21453 | Point Reyes | Marin | California Air Resources Board | No |
| 70075 | Pomona | Los Angeles | South Coast AQMD | Yes |
| 10243 | Porterville | Tulare | San Joaquin Valley Unified APCD | Yes |
| 32826 | Portola - Gulling Street | Plumas | Northern Sierra AQMD | Yes |
| 32825 | Portola - Nevada Street | Plumas | Northern Sierra AQMD | No |
| 32821 | Quincy-N Church Street | Plumas | Northern Sierra AQMD | Yes |
| 52902 | Red Bluff - Main Street | Tehama | Tehama County APCD | No |
| 52903 | Red Bluff - Walnut St | Tehama | Tehama County APCD | Yes |
| 52901 | Red Bluff-Messer Drive | Tehama | Tehama County APCD | No |
| 52911 | Red Bluff-Oak Street | Tehama | Tehama County APCD | No |
| 40999 | Red Hills | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 45561 | Redding - Buckeye | Shasta | Shasta County AQMD | No |
| 45555 | Redding - Health Department | Shasta | Shasta County AQMD | Yes |
| 45560 | Redding - Toyon | Shasta | Shasta County AQMD | No |
| 36204 | Redlands | San Bernardino | South Coast AQMD | Yes |
| 41541 | Redwood City | San Mateo | Bay Area AQMD | Yes |
| 70044 | Rehrig (Exide) | Los Angeles | South Coast AQMD | Yes |
| 43381 | Reid Hillview Airport | Santa Clara | Bay Area AQMD | Yes |
| 70074 | Reseda | Los Angeles | South Coast AQMD | Yes |
| 07441 | Richmond-7th Street | Contra Costa | Bay Area AQMD | Yes |
| 07432 | Richmond-Point Richmond | Contra Costa | Bay Area AQMD | Yes |
| 15300 | Ridgecrest - California Av | Kern | Eastern Kern APCD | No |
| 15301 | Ridgecrest - Ward | Kern | Eastern Kern APCD | Yes |
| 33146 | Riverside-Magnolia | Riverside | South Coast AQMD | No |
| 07446 | Rodeo-Third St | Contra Costa | Bay Area AQMD | Yes |
| 98902 | Roseville Railyard-Church | Placer | Placer County APCD | No |
| 98900 | Roseville Railyard-Denio | Placer | Placer County APCD | No |
| 98901 | Roseville Railyard-Pool | Placer | Placer County APCD | No |
| 98903 | Roseville Railyard-Vernon | Placer | Placer County APCD | No |
| 31822 | Roseville-N Sunrise Ave | Placer | California Air Resources Board | Yes |
| 33144 | Rubidoux - Mission Blvd | Riverside | South Coast AQMD | Yes |
| 70046 | SA Recycling | San Bernardino | South Coast AQMD | Yes |
| 34305 | Sacramento - 1309 T Street | Sacramento | California Air Resources Board | Yes |
| 34314 | Sacramento - Airport Road | Sacramento | Sacramento Metropolitan AQMD | No |
| 34279 | Sacramento - Bercut Drive | Sacramento | Sacramento Metropolitan AQMD | Yes |
| 34284 | Sacramento-Branch Center #2 | Sacramento | Sacramento Metropolitan AQMD | Yes |
| 34295 | Sacramento-Del Paso Manor | Sacramento | Sacramento Metropolitan AQMD | Yes |
| 34289 | Sacramento-El Camino | Sacramento | Sacramento Metropolitan AQMD | No |
| 34315 | Sacramento-Goldenland | Sacramento | Sacramento Metropolitan AQMD | No |
| 34277 | Sacramento-Health Dept | Sacramento | Sacramento Metropolitan AQMD | No |
| 27554 | Salinas #3 | Monterey | Monterey Bay Unified APCD | Yes |
| 13604 | Salton City | Imperial | Imperial Irrigation District | Yes |
| 33602 | Salton Sea Park | Riverside | Imperial Irrigation District | Yes |
| 05633 | San Andreas-Gold Strike Road | Calaveras | California Air Resources Board | Yes |
| 36203 | San Bernardino | San Bernardino | South Coast AQMD | Yes |
| 33199 | San Bernardino - KVCR Tower | San Bernardino | California Air Resources Board | Yes |
| 41539 | San Carlos Airport II | San Mateo | Bay Area AQMD | No |
| 80142 | San Diego - Beardsley | San Diego | San Diego County APCD | No |
| 80136 | San Diego - Kearny Villa Road | San Diego | San Diego County APCD | Yes |
| 80123 | San Diego - Overland | San Diego | San Diego County APCD | No |
| 80201 | San Diego - Rancho Carmel Drive | San Diego | San Diego County APCD | Yes |
| 80130 | San Diego - Union | San Diego | San Diego County APCD | No |
| 90306 | San Francisco-Arkansas Street | San Francisco | Bay Area AQMD | Yes |
| 43383 | San Jose - Jackson St | Santa Clara | Bay Area AQMD | Yes |
| 43385 | San Jose - Knox Ave | Santa Clara | Bay Area AQMD | Yes |
| 43391 | San Jose - Tully Road | Santa Clara | Bay Area AQMD | No |
| 35821 | San Juan Bautista | San Benito | Monterey Bay Unified APCD | Yes |
| 60343 | San Leandro | Alameda | Bay Area AQMD | No |
| 44858 | San Lorenzo Valley Middle School | Santa Cruz | Monterey Bay Unified APCD | Yes |
| 40837 | San Luis Obispo - Roberto Ct | San Luis Obispo | San Luis Obispo County APCD | Yes |
| 40836 | San Luis Obispo-Higuera Street | San Luis Obispo | California Air Resources Board | No |
| 43393 | San Martin | Santa Clara | Bay Area AQMD | Yes |
| 07447 | San Pablo-Rumrill | Contra Costa | Bay Area AQMD | Yes |
| 21451 | San Rafael | Marin | Bay Area AQMD | Yes |
| 60341 | San Ramon - Alcosta Blvd | Contra Costa | Bay Area AQMD | Yes |
| 80143 | San Ysidro | San Diego | San Diego County APCD | No |
| 42401 | Santa Barbara - UCSB Campus | Santa Barbara | Santa Barbara County APCD | Yes |
| 42409 | Santa Barbara-National Guard Armory | Santa Barbara | Santa Barbara County APCD | Yes |
| 70090 | Santa Clarita-Placerita | Los Angeles | South Coast AQMD | Yes |
| 44200 | Santa Cruz AMS | Santa Cruz | Monterey Bay Unified APCD | Yes |
| 42367 | Santa Maria - Orcutt Rd | Santa Barbara | Santa Barbara County APCD | Yes |
| 42408 | Santa Maria - South Broadway | Santa Barbara | California Air Resources Board | No |
| 49893 | Santa Rosa | Sonoma | Bay Area AQMD | No |
| 42369 | Santa Ynez | Santa Barbara | Santa Barbara County APCD | Yes |
| 44854 | Scotts Valley #4 - Scotts Valley Drive | Santa Cruz | Monterey Bay Unified APCD | No |
| 44856 | Scotts Valley AMS | Santa Cruz | Monterey Bay Unified APCD | No |
| 49891 | Sebastopol | Sonoma | Bay Area AQMD | Yes |
| 54009 | Sequoia National Park-Ash Mountain | Tulare | National Park Service (NPS) | Yes |
| 54036 | Sequoia National Park-Lower Kaweah | Tulare | National Park Service (NPS) | Yes |
| 15248 | Shafter | Kern | California Air Resources Board | Yes |
| 47875 | Shasta Lake - Lake Blvd | Shasta | Shasta County AQMD | Yes |
| 47873 | Shasta Lake-La Mesa | Shasta | Shasta County AQMD | No |
| 14025 | Shell Cut | Inyo | Great Basin Unified APCD | Yes |
| 80147 | Sherman Elementary School | San Diego | San Diego County APCD | Yes |
| 56434 | Simi Valley - Cochran Street | Ventura | Ventura County APCD | Yes |
| 56437 | Simi Valley - Upper Air | Ventura | Ventura County APCD | Yes |
| 34312 | Sloughhouse | Sacramento | Sacramento Metropolitan AQMD | Yes |
| 57913 | SNAPS - Marycrest Manor | Los Angeles | California Air Resources Board | Yes |
| 57915 | SNAPS - Sentinel Peak Resources | Los Angeles | California Air Resources Board | Yes |
| 13602 | Sonny Bono | Imperial | Imperial Irrigation District | Yes |
| 55930 | Sonora - Barretta Street | Tuolumne | California Air Resources Board | Yes |
| 09670 | South Lake Tahoe-Airport (seasonal) | El Dorado | California Air Resources Board | No |
| 09691 | South Lake Tahoe-Sandy Way | El Dorado | California Air Resources Board | Yes |
| 70110 | South Long Beach | Los Angeles | South Coast AQMD | Yes |
| 39255 | Stockton - University Park | San Joaquin | California Air Resources Board | Yes |
| 39252 | Stockton-Hazelton | San Joaquin | California Air Resources Board | No |
| 39288 | Stockton-Wagner-Holt School | San Joaquin | San Joaquin Valley Unified APCD | No |
| 43394 | Sunnyvale-Ticonderoga | Santa Clara | Bay Area AQMD | No |
| 51899 | Sutter Buttes (seasonal) | Sutter | California Air Resources Board | Yes |
| 15250 | Taft - College | Kern | San Joaquin Valley Unified APCD | No |
| 31819 | Tahoe City - 221 Fairway Drive | Placer | Placer County APCD | Yes |
| 33031 | Temecula - Lake Skinner | Riverside | South Coast AQMD | Yes |
| 56435 | Thousand Oaks-Moorpark Road | Ventura | Ventura County APCD | Yes |
| 33601 | Torres - Martinez | Riverside | Imperial Irrigation District | Yes |
| 39271 | Tracy - Airport | San Joaquin | San Joaquin Valley Unified APCD | Yes |
| 10242 | Tranquility | Fresno | San Joaquin Valley Unified APCD | Yes |
| 36220 | Trona - Athol/Telescope #2 | San Bernardino | Mojave Desert AQMD | Yes |
| 29794 | Truckee - Fire Station | Nevada | Northern Sierra AQMD | Yes |
| 50573 | Turlock-S Minaret Street | Stanislaus | San Joaquin Valley Unified APCD | Yes |
| 52910 | Tuscan Butte (seasonal) | Tehama | California Air Resources Board | Yes |
| 36211 | Twentynine Palms - Adobe Road | San Bernardino | Mojave Desert AQMD | Yes |
| 70045 | Uddeholm (Trojan Battery) | Los Angeles | South Coast AQMD | Yes |
| 23769 | Ukiah - Gobbi Street | Mendocino | Mendocino County AQMD | Yes |
| 23764 | Ukiah - Library | Mendocino | Mendocino County AQMD | Yes |
| 36175 | Upland | San Bernardino | South Coast AQMD | Yes |
| 48881 | Vacaville-Merchant Street | Solano | Yolo-Solano AQMD | Yes |
| 48884 | Vacaville-Ulatis Drive | Solano | Yolo-Solano AQMD | Yes |
| 48879 | Vallejo | Solano | Bay Area AQMD | Yes |
| 70041 | Van Nuys Airport | Los Angeles | South Coast AQMD | No |
| 42390 | Vandenberg Air Force Base-STS | Santa Barbara | Santa Barbara County APCD | No |
| 56433 | Ventura-Emma Wood State Beach | Ventura | Ventura County APCD | No |
| 36306 | Victorville - Park Avenue | San Bernardino | Mojave Desert AQMD | Yes |
| 54568 | Visalia | Tulare | California Air Resources Board | No |
| 54000 | Visalia - Airport | Tulare | San Joaquin Valley Unified APCD | No |
| 54569 | Visalia - W. Ashland Avenue | Tulare | California Air Resources Board | Yes |
| 44852 | Watsonville-Airport Boulevard | Santa Cruz | Monterey Bay Unified APCD | No |
| 53915 | Weaverville | Trinity | North Coast Unified AQMD | Yes |
| 47851 | Weed - Elementary School - SPM | Siskiyou | California Air Resources Board | No |
| 57570 | West Sacramento-15th Street | Yolo | Yolo-Solano AQMD | Yes |
| 13697 | Westmorland | Imperial | Imperial County APCD | Yes |
| 29802 | White Cloud (seasonal) | Nevada | California Air Resources Board | No |
| 14732 | White Mountain Research Center | Inyo | Great Basin Unified APCD | Yes |
| 23755 | Willits - Blosser Lane | Mendocino | Mendocino County AQMD | Yes |
| 23754 | Willits - Justice Center | Mendocino | Mendocino County AQMD | No |
| 23753 | Willits-Firehouse | Mendocino | Mendocino County AQMD | No |
| 23770 | Willits-Main Street | Mendocino | Mendocino County AQMD | No |
| 11676 | Willows-Colusa | Glenn | California Air Resources Board | Yes |
| 57582 | Woodland-Gibson Road | Yolo | Yolo-Solano AQMD | Yes |
| 22745 | Yosemite Natl Park - Glacier Point | Mariposa | National Park Service (NPS) | No |
| 22741 | Yosemite Natl Park - School Yard | Mariposa | National Park Service (NPS) | No |
| 22746 | Yosemite Natl Park-Turtleback | Mariposa | National Park Service (NPS) | Yes |
| 22742 | Yosemite Village - Visitor Center | Mariposa | California Air Resources Board | Yes |
| 47861 | Yreka | Siskiyou | Siskiyou County APCD | Yes |
| 51898 | Yuba City | Sutter | California Air Resources Board | Yes |