Basin Name County Name Air Monitoring Site Name Parameter

2000 2001 2002

Great Basin Valleys Inyo Death Valley Natl Monument 4th High 0.079 0.081 0.083

Valid Days 351 344 351

Mono Mammoth Lakes-Gateway HC 4th High 0.083 0.074

Valid Days 185 128

Lake County Lake Lakeport-Lakeport Blvd 4th High 0.061 0.06 0.072

Valid Days 365 363 358

Lake Tahoe El Dorado Echo Summit 4th High 0.074 0.076 0.077

Valid Days 252 325 350

South Lake Tahoe-Sandy Way 4th High 0.066 0.067 0.067

Valid Days 361 359 356

Mojave Desert Kern Mojave-923 Poole Street 4th High 0.093 0.099 0.095

Valid Days 332 348 349

Los Angeles Lancaster-43301 Division Street 4th High 0.04 0.102

Valid Days 61 360

Lancaster-W Pondera Street 4th High 0.076 0.099 0.1

Valid Days 357 326 283

San Bernardino Barstow 4th High 0.086 0.085 0.092

Valid Days 360 349 356

Hesperia-Olive Street 4th High 0.109 0.097 0.113

Valid Days 360 350 362

Joshua Tree-National Monument 4th High 0.096 0.08 0.107

Valid Days 344 350 332

Phelan-Beekley Road & Phelan Road 4th High 0.093 0.101 0.115

Valid Days 353 359 359

Trona-Athol and Telegraph 4th High 0.079 0.073 0.089

Valid Days 357 349 349

Twentynine Palms-Adobe Road #2 4th High 0.089 0.089 0.087

Valid Days 348 349 348

Victorville-14306 Park Avenue 4th High 0.095 0.092 0.106

Valid Days 339 344 354

Mountain Counties Amador Jackson-Clinton Road 4th High 0.094 0.083 0.089

Valid Days 363 360 353

Calaveras San Andreas-Gold Strike Road 4th High 0.098 0.087 0.093

Valid Days 326 362 362

El Dorado Cool-Highway 193 4th High 0.103 0.105 0.111

Valid Days 182 175 183

Placerville-Gold Nugget Way 4th High 0.092 0.093 0.098

Valid Days 361 330 250

Mariposa Jerseydale - 6440 Jerseydale 4th High 0.09 0.088 0.091

Valid Days 182 167 184

Yosemite National Park-Merced River 4th High 0.072

Valid Days 118

Yosemite Natl Park-Turtleback Dome 4th High 0.087 0.087 0.093

Valid Days 354 326 334

Nevada Grass Valley-Litton Building 4th High 0.1 0.095 0.099

Valid Days 338 351 364

Truckee-Fire Station 4th High 0.063 0.075 0.065

Valid Days 311 363 289

White Cloud Mountain 4th High 0.094 0.093 0.093

Valid Days 243 282 183

Placer Colfax-City Hall 4th High 0.055 0.068 0.101

Valid Days 101 78 295

Plumas Quincy-N Church Street 4th High 0.069 0.068 0.078

Valid Days 363 240 323

Tuolumne Five Mile Learning Center 4th High 0.095 0.085 0.094

Valid Days 291 184 182

Sonora-Barretta Street 4th High 0.085 0.079 0.09

Valid Days 352 347 361

Year

Enclosure 2

2000-2002 8-hour Ozone Data* for California Air Monitoring Sites

Page 1 July 15, 2003
Basin Name County Name Air Monitoring Site Name Parameter

2000 2001 2002

Year

North Central Coast Monterey Carmel Valley-Ford Road 4th High 0.063 0.063 0.066

Valid Days 358 357 359

King City-750 Metz Road 4th High 0.066 0.058 0.063

Valid Days 359 363 350

Monterey-Silver Cloud Court 4th High 0.06 0.057 0.056

Valid Days 356 365 364

Salinas-High School 4th High 0.055 0.061 0.056

Valid Days 359 357 363

San Benito Hollister-Fairview Road 4th High 0.072 0.072 0.076

Valid Days 337 347 358

Pinnacles National Monument 4th High 0.078 0.079 0.086

Valid Days 278 360 361

Santa Cruz Davenport 4th High 0.05 0.053 0.05

Valid Days 360 347 354

Santa Cruz-2544 Soquel Avenue 4th High 0.057 0.056 0.054

Valid Days 345 332 352

Scotts Valley-Scotts Valley Drive 4th High 0.064 0.064 0.065

Valid Days 353 343 360

Watsonville-Airport Boulevard 4th High 0.057 0.06 0.055

Valid Days 363 363 363

North Coast Mendocino Ukiah-E Gobbi Street 4th High 0.053 0.052 0.06

Valid Days 358 359 360

Willits-899 S Main Street 4th High 0.043 0.045 0.052

Valid Days 361 359 360

Sonoma Healdsburg-Municipal Airport 4th High 0.061 0.065 0.065

Valid Days 366 332 365

Northeast Plateau Siskiyou Yreka-Foothill Drive 4th High 0.062 0.037 0.066

Valid Days 267 249 343

Sacramento Valley Butte Chico-Manzanita Avenue 4th High 0.078 0.08 0.081

Valid Days 352 360 358

Paradise-4405 Airport Road 4th High 0.086 0.088 0.094

Valid Days 175 360 362

Colusa Colusa-Sunrise Blvd 4th High 0.071 0.083 0.076

Valid Days 348 357 355

Glenn Willows-E Laurel Street 4th High 0.074 0.076 0.072

Valid Days 354 345 357

Placer Auburn-Dewitt-C Avenue 4th High 0.1 0.102 0.101

Valid Days 268 254 109

Rocklin-Rocklin Road 4th High 0.089 0.091 0.097

Valid Days 346 359 273

Roseville-N Sunrise Blvd 4th High 0.092 0.09 0.095

Valid Days 326 360 361

Sacramento Elk Grove-Bruceville Road 4th High 0.074 0.084 0.069

Valid Days 347 347 329

Folsom-Natoma Street 4th High 0.1 0.096 0.104

Valid Days 273 335 347

North Highlands-Blackfoot Way 4th High 0.089 0.093 0.095

Valid Days 349 353 330

Sacramento-3801 Airport Road 4th High 0.078 0.079 0.079

Valid Days 352 332 318

Sacramento-Del Paso Manor 4th High 0.093 0.089 0.105

Valid Days 342 308 336

Sacramento-T Street 4th High 0.075 0.08 0.083

Valid Days 356 346 346

Sloughhouse 4th High 0.098 0.092 0.097

Valid Days 209 202 204

Shasta Anderson-North Street 4th High 0.074 0.077 0.072

Valid Days 355 323 360

Lassen Volcanic Natl Park-Manzanita Lake 4th High 0.074 0.073 0.075

Valid Days 349 319 317

Redding-Health Dept Roof 4th High 0.082 0.072 0.081

Valid Days 331 290 357

Solano Vacaville-Elmira Road 4th High 0.073 0.071 0.073

Valid Days 360 343 355

Page 2 July 15, 2003
Basin Name County Name Air Monitoring Site Name Parameter

2000 2001 2002

Year

Sutter Pleasant Grove-4 miles SW 4th High 0.083 0.084 0.08

Valid Days 358 361 302

Sutter Buttes-S Butte 4th High 0.082 0.073 0.099

Valid Days 152 163 180

Yuba City-Almond Street 4th High 0.079 0.081 0.08

Valid Days 314 318 358

Tehama Red Bluff-Oak Street 4th High 0.079 0.078 0.088

Valid Days 363 299 365

Tuscan Butte 4th High 0.082 0.078 0.091

Valid Days 156 180 184

Yolo Davis-UCD Campus 4th High 0.08 0.075 0.076

Valid Days 353 322 325

Woodland-Gibson Road 4th High 0.081 0.081 0.088

Valid Days 352 355 362

Salton Sea Imperial Calexico-East 4th High 0.075 0.092 0.087

Valid Days 304 285 315

Calexico-Ethel Street 4th High 0.088 0.1 0.073

Valid Days 325 360 364

Calexico-Grant Street 4th High 0.089 0.092

Valid Days 184 360

El Centro-9th Street 4th High 0.083 0.089

Valid Days 184 358

Niland-English Road 4th High 0.079 0.089

Valid Days 362 359

Westmorland-W 1st Street 4th High 0.068 0.073

Valid Days 184 358

Riverside Indio-Jackson Street 4th High 0.087 0.093 0.097

Valid Days 360 365 365

Palm Springs-Fire Station 4th High 0.096 0.111 0.109

Valid Days 362 365 362

San Diego San Diego Alpine-Victoria Drive 4th High 0.095 0.096 0.096

Valid Days 322 364 352

Camp Pendleton 4th High 0.075 0.076 0.07

Valid Days 336 359 357

Chula Vista 4th High 0.072 0.071 0.07

Valid Days 357 358 363

Del Mar-Mira Costa College 4th High 0.07 0.072 0.071

Valid Days 362 333 355

El Cajon-Redwood Avenue 4th High 0.077 0.074 0.073

Valid Days 344 360 358

Escondido-E Valley Parkway 4th High 0.081 0.076 0.069

Valid Days 354 364 363

Oceanside-Mission Avenue 4th High 0.069 0.071

Valid Days 350 364

Otay Mesa-Paseo International 4th High 0.056 0.06 0.069

Valid Days 359 357 360

San Diego-12th Avenue 4th High 0.064 0.065 0.064

Valid Days 360 358 363

San Diego-Logan Avenue 4th High 0.063 0.04

Valid Days 329 59

San Diego-Overland Avenue 4th High 0.073 0.083 0.076

Valid Days 359 358 351

San Francisco Bay Area Alameda Fremont-Chapel Way 4th High 0.053 0.066 0.063

Valid Days 363 360 341

Hayward-La Mesa 4th High 0.061 0.06 0.064

Valid Days 242 244 244

Livermore-793 Rincon Avenue 4th High 0.076 0.081 0.088

Valid Days 358 357 360

Livermore-Old 1st Street 4th High 0.074

Valid Days 331

Oakland-6701 International Boulevard 4th High 0.031 0.05

Valid Days 35 337

Oakland-Alice Street 4th High 0.041 0.041 0.038

Valid Days 240 244 242

San Leandro-County Hospital 4th High 0.053 0.055 0.054

Valid Days 239 243 239

Page 3 July 15, 2003
Basin Name County Name Air Monitoring Site Name Parameter

2000 2001 2002

Year

Contra Costa Bethel Island Road 4th High 0.077 0.08 0.077

Valid Days 352 356 350

Concord-2975 Treat Blvd 4th High 0.071 0.081 0.083

Valid Days 355 356 352

Crockett-1098 Pomona Street 4th High 0.036 0.064

Valid Days 78 344

Pittsburg-10th Street 4th High 0.071 0.074 0.077

Valid Days 359 357 358

San Pablo-El Portal 4th High 0.05 0.052 0.05

Valid Days 361 354 221

San Pablo-Rumrill Blvd 4th High 0.045

Valid Days 101

Marin San Rafael 4th High 0.045 0.05 0.046

Valid Days 357 354 361

Napa Napa-Jefferson Avenue 4th High 0.061 0.06 0.068

Valid Days 361 354 342

San Francisco San Francisco-Arkansas Street 4th High 0.041 0.047 0.045

Valid Days 359 350 353

San Mateo Redwood City 4th High 0.048 0.053 0.057

Valid Days 357 348 336

Santa Clara Gilroy-9th Street 4th High 0.074 0.082

Valid Days 244 242

Los Gatos 4th High 0.057 0.072 0.078

Valid Days 238 268 304

San Jose-4th Street 4th High 0.046 0.065 0.045

Valid Days 355 349 117

San Jose-935 Piedmont Road 4th High 0.05 0.055 0.057

Valid Days 240 242 242

San Martin-Murphy Avenue 4th High 0.073 0.079 0.094

Valid Days 235 244 239

Sunnyvale-910 Ticonderoga 4th High 0.046 0.064

Valid Days 234 244

Solano Fairfield-Bay Area AQMD 4th High 0.067 0.068 0.052

Valid Days 236 243 58

Suisun STP 4th High 0.074

Valid Days 183

Vallejo-304 Tuolumne Street 4th High 0.051 0.063 0.062

Valid Days 354 356 358

Sonoma Santa Rosa-5th Street 4th High 0.05 0.053 0.054

Valid Days 355 346 352

San Joaquin Valley Fresno Clovis-N Villa Avenue 4th High 0.104 0.11 0.104

Valid Days 357 359 351

Fresno-1st Street 4th High 0.104 0.104 0.109

Valid Days 358 357 357

Fresno-Drummond Street 4th High 0.099 0.097 0.11

Valid Days 338 356 363

Fresno-Sierra Skypark #2 4th High 0.114 0.113 0.119

Valid Days 351 358 362

Parlier 4th High 0.108 0.109 0.115

Valid Days 362 349 362

Shaver Lake - Perimeter Road 4th High 0.091 0.093 0.096

Valid Days 184 169 184

Kern Arvin-Bear Mountain Blvd 4th High 0.111 0.109 0.118

Valid Days 351 358 364

Bakersfield-5558 California Avenue 4th High 0.102 0.099 0.101

Valid Days 348 358 361

Bakersfield-Golden State Highway 4th High 0.099 0.095 0.101

Valid Days 327 348 344

Edison 4th High 0.105 0.104 0.109

Valid Days 349 364 358

Maricopa-Stanislaus Street 4th High 0.095 0.098 0.106

Valid Days 305 361 359

Oildale-3311 Manor Street 4th High 0.103 0.097 0.102

Valid Days 357 355 342

Shafter-Walker Street 4th High 0.092 0.098 0.096

Valid Days 358 343 346

Page 4 July 15, 2003
Basin Name County Name Air Monitoring Site Name Parameter

2000 2001 2002

Year

Kings Hanford-S Irwin Street 4th High 0.105 0.093 0.101

Valid Days 359 358 356

Madera Madera-Pump Yard 4th High 0.088 0.09 0.096

Valid Days 358 348 357

Merced Merced-S Coffee Avenue 4th High 0.103 0.096 0.105

Valid Days 357 351 361

San Joaquin Stockton-E Mariposa 4th High 0.079 0.083 0.081

Valid Days 303 169 153

Stockton-Hazelton Street 4th High 0.076 0.076 0.074

Valid Days 353 363 363

Tracy-24371 Patterson Pass Road 4th High 0.082 0.078 0.084

Valid Days 364 361 356

Stanislaus Modesto-14th Street 4th High 0.086 0.091 0.087

Valid Days 360 361 355

Turlock-S Minaret Street 4th High 0.091 0.094 0.102

Valid Days 365 330 355

Tulare Sequoia & Kings Canyon Np 4th High 0.105 0.104 0.107

Valid Days 93 264 309

Sequoia National Park-Lookout Point 4th High 0.101 0.101 0.109

Valid Days 236 207 295

Sequoia Natl Park-Lower Kaweah 4th High 0.09 0.096 0.108

Valid Days 324 360 333

Visalia-N Church Street 4th High 0.099 0.099 0.102

Valid Days 360 363 362

South Central Coast San Luis Obispo Atascadero-Lewis Avenue 4th High 0.07 0.073 0.078

Valid Days 357 357 349

Grover City-Lesage Drive 4th High 0.055 0.058 0.05

Valid Days 338 321 350

Morro Bay 4th High 0.052 0.057 0.056

Valid Days 347 351 354

Nipomo-Regional Park 4th High 0.058 0.073 0.062

Valid Days 345 332 353

Paso Robles-Santa Fe Avenue 4th High 0.069 0.071 0.074

Valid Days 274 363 350

San Luis Obispo-Marsh Street 4th High 0.053 0.061 0.059

Valid Days 273 363 330

Santa Barbara Carpinteria-Gobernador Road 4th High 0.075 0.069 0.063

Valid Days 364 345 346

El Capitan Beach 4th High 0.065 0.07 0.061

Valid Days 361 357 364

Gaviota-GTC Site B 4th High 0.067 0.063 0.065

Valid Days 364 362 364

Goleta-Fairview 4th High 0.065 0.063 0.056

Valid Days 361 362 359

Las Flores Canyon #1 4th High 0.077 0.076 0.07

Valid Days 363 359 361

Lompoc-HS&P 4th High 0.067 0.069 0.068

Valid Days 363 362 362

Lompoc-S H Street 4th High 0.059 0.057 0.063

Valid Days 362 363 362

Paradise Road-Los Padres National Forest 4th High 0.08 0.083 0.085

Valid Days 364 363 362

Santa Barbara-700 East Canon Perdido 4th High 0.055

Valid Days 232

Santa Barbara-W Carillo Street 4th High 0.061

Valid Days 286

Santa Maria-906 S Broadway 4th High 0.053 0.051 0.048

Valid Days 303 348 363

Santa Maria-Broadway 4th High 0.044

Valid Days 59

Santa Rosa Island 4th High 0.065 0.064 0.066

Valid Days 298 346 334

Santa Ynez-Airport Road 4th High 0.066 0.067 0.067

Valid Days 363 365 361

Vandenberg Air Force Base-STS Power 4th High 0.061 0.063 0.063

Valid Days 364 359 355

Page 5 July 15, 2003
Basin Name County Name Air Monitoring Site Name Parameter

2000 2001 2002

Year

Ventura El Rio-Rio Mesa School #2 4th High 0.067 0.067 0.064

Valid Days 357 359 354

Ojai-Ojai Avenue 4th High 0.092 0.096 0.097

Valid Days 357 359 358

Piru-2 miles SW 4th High 0.078

Valid Days 300

Piru-3301 Pacific Avenue 4th High 0.041 0.092 0.087

Valid Days 58 356 363

Simi Valley-Cochran Street 4th High 0.1 0.101 0.092

Valid Days 355 360 350

Thousand Oaks-Moorpark Road 4th High 0.082 0.083 0.08

Valid Days 364 359 362

Ventura County-W Casitas Pass Road 4th High 0.077 0.085 0.076

Valid Days 328 340 292

Ventura-Emma Wood State Beach 4th High 0.068 0.076 0.064

Valid Days 351 354 358

South Coast Los Angeles Azusa 4th High 0.108 0.102 0.097

Valid Days 366 365 358

Burbank-W Palm Avenue 4th High 0.097 0.087 0.091

Valid Days 366 358 363

Glendora-Laurel 4th High 0.112 0.11 0.111

Valid Days 364 364 356

Hawthorne 4th High 0.065 0.075 0.064

Valid Days 359 365 329

Los Angeles-651 Mott Street 4th High 0.075 0.065

Valid Days 301 146

Los Angeles-North Main Street 4th High 0.085 0.075 0.077

Valid Days 365 361 360

Lynwood 4th High 0.05 0.054 0.049

Valid Days 365 365 354

North Long Beach 4th High 0.066 0.06 0.059

Valid Days 362 364 354

Pasadena-S Wilson Avenue 4th High 0.104 0.09 0.095

Valid Days 361 365 364

Pico Rivera 4th High 0.086 0.081 0.074

Valid Days 365 364 356

Pomona 4th High 0.088 0.081 0.099

Valid Days 365 365 357

Reseda 4th High 0.08 0.09 0.111

Valid Days 366 365 361

Santa Clarita 4th High 0.112 0.131

Valid Days 226 359

Santa Clarita-County Fire Station 4th High 0.097 0.063

Valid Days 363 121

West Los Angeles-VA Hospital 4th High 0.071 0.064 0.073

Valid Days 366 365 356

Wilmington-1115 N.Mahar Avenue 4th High 0.058 0.058

Valid Days 198 209

Orange Anaheim-Harbor Blvd 4th High 0.074 0.066 0.069

Valid Days 360 274 346

Costa Mesa-Mesa Verde Drive 4th High 0.067 0.069 0.066

Valid Days 363 365 360

El Toro 4th High 0.067

Valid Days 244

La Habra 4th High 0.083 0.073 0.071

Valid Days 361 365 361

Mission Viejo-26081 Via Pera 4th High 0.077 0.083 0.081

Valid Days 122 365 362

Riverside Banning Airport 4th High 0.102 0.116 0.113

Valid Days 364 365 328

Lake Elsinore-W Flint Street 4th High 0.098 0.111 0.104

Valid Days 364 348 358

Perris 4th High 0.111 0.122 0.107

Valid Days 365 365 356

Riverside-Rubidoux 4th High 0.106 0.109 0.109

Valid Days 365 364 335

Page 6 July 15, 2003
Basin Name County Name Air Monitoring Site Name Parameter

2000 2001 2002

Year

San Bernardino Crestline 4th High 0.122 0.133 0.131

Valid Days 352 365 362

Fontana-Arrow Highway 4th High 0.1 0.122 0.114

Valid Days 363 365 326

Redlands-Dearborn 4th High 0.112 0.131 0.117

Valid Days 366 365 363

San Bernardino-4th Street 4th High 0.111 0.128 0.105

Valid Days 365 359 348

Upland 4th High 0.117 0.12 0.105

Valid Days 366 364 360

* - Ozone units are ppm

** - Values for Antelope Valley are based on 1999-2001, due to unavailability of 2002 data

4th High = 4th highest daily maximum 8-hour average ozone concentration

Valid Days = Number of valid 8-hour ozone days per indicated year (based on federal definition)

3-year Average of 4th High = 3-year average of the 4th highest daily maximum 8-hour ozone concentration during 2000-2002

Data Extracted from ARB ADAM Database on July 9, 2003

Page 7 July 15, 2003
0.081

0.078

0.064

0.075

0.066

0.095

0.071

0.091 **

0.087

0.106

0.094

0.103

0.080

0.088

0.097

0.088

0.092

0.106

0.094

0.089

0.072

0.089

0.098

0.067

0.093

0.074

0.071

0.091

0.084

3-year Average 

of 4th Highest

Page 8 July 15, 2003
3-year Average 

of 4th Highest

0.064

0.062

0.057

0.057

0.073

0.081

0.051

0.055

0.064

0.057

0.055

0.046

0.063

0.056

0.079

0.089

0.076

0.074

0.101

0.092

0.092

0.075

0.100

0.092

0.078

0.095

0.079

0.095

0.074

0.074

0.078

0.072

Page 9 July 15, 2003
3-year Average 

of 4th Highest

0.082

0.084

0.080

0.081

0.083

0.077

0.083

0.084

0.087

0.090

0.086

0.084

0.070

0.092

0.105

0.095

0.073

0.071

0.071

0.074

0.075

0.061

0.064

0.077

0.060

0.061

0.081

0.040

0.040

0.054

Page 10 July 15, 2003
3-year Average 

of 4th Highest

0.078

0.078

0.050

0.074

0.050

0.045

0.047

0.063

0.044

0.052

0.078

0.069

0.052

0.054

0.082

0.055

0.062

0.074

0.058

0.052

0.106

0.105

0.102

0.115

0.110

0.093

0.112

0.100

0.098

0.106

0.099

0.100

0.095

Page 11 July 15, 2003
3-year Average 

of 4th Highest

0.099

0.091

0.101

0.081

0.075

0.081

0.088

0.095

0.105

0.103

0.098

0.100

0.073

0.054

0.055

0.064

0.071

0.057

0.069

0.065

0.065

0.061

0.074

0.068

0.059

0.082

0.055

0.050

0.065

0.066

0.062

Page 12 July 15, 2003
3-year Average 

of 4th Highest

0.066

0.095

0.073

0.097

0.081

0.079

0.069

0.102

0.091

0.111

0.068

0.070

0.079

0.051

0.061

0.096

0.080

0.089

0.093

0.121

0.069

0.058

0.069

0.067

0.075

0.080

0.110

0.104

0.113

0.108

Page 13 July 15, 2003
3-year Average 

of 4th Highest

0.128

0.112

0.120

0.114

0.114

Page 14 July 15, 2003