| APPENDIX C -
Attainment Designations & Thresholds |
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| Notes: U/A = Unclassified/Attainment; N = Non-Attainment; N* = Non-attainment in a portion of the
county; NC = Not Classified |
| COUNTY |
DISTRICT |
1-HR OZONE DESIG-
NATION |
CLASSIF ICATION |
MAJOR SOURCE
NOX/VOC THRESHOLD (tons/yr) |
50% OF THRES- HOLD
(tons/yr) |
PM10 DESIG- NATION |
CLASSIF ICATION |
MAJOR SOURCE PM10
THRESHOLD (tons/yr) |
50% OF THRES- HOLD
(tons/yr) |
| Alameda |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| Alpine |
Great Basin APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Amador |
Amador APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Butte |
Butte AQMD |
N |
Transition |
100 |
50 |
U/A |
|
100 |
50 |
| Calaveras |
Calaveras AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Colusa |
Colusa APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Contra Costa |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| Del Norte |
North Coast AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| El Dorado |
El Dorado AQMD |
N |
Severe |
25 |
12.5 |
U/A |
|
100 |
50 |
| Fresno |
SJV Unified APCD |
N |
Severe |
25 |
12.5 |
N |
Serious |
70 |
35 |
| Glenn |
Glenn APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Humboldt |
North Coast AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Imperial |
Imperial APCD |
N |
Transition |
100 |
50 |
N* |
Moderate |
100 |
50 |
| Inyo |
Great Basin APCD |
U/A |
|
100 |
50 |
N* |
Serious |
70 |
35 |
| Kern |
SJV Unified APCD |
N |
Severe |
25 |
12.5 |
N |
Serious |
70 |
35 |
| Kern |
Kern APCD |
N |
Serious |
50 |
25 |
U/A |
|
100 |
50 |
| Kings |
SJV Unified APCD |
N |
Severe |
25 |
12.5 |
N |
Serious |
70 |
35 |
| Lake |
Lake AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Lassen |
Lassen APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Los Angeles |
South Coast AQMD |
N |
Extreme |
10 |
5 |
N |
Serious |
70 |
35 |
| Los Angeles |
Antelope Valley APCD |
N |
Severe |
25 |
12.5 |
U/A |
|
100 |
50 |
| Madera |
SJV Unified APCD |
N |
Severe |
25 |
12.5 |
N |
Serious |
70 |
35 |
| Marin |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| Mariposa |
Mariposa APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Mendocino |
Mendocino AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Merced |
SJV Unified APCD |
N |
Severe |
25 |
12.5 |
N |
Serious |
70 |
35 |
| Modoc |
Modoc APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Mono |
Great Basin APCD |
U/A |
|
100 |
50 |
N* |
Moderate |
100 |
50 |
| Monterey |
Monterey Bay APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Napa |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| COUNTY |
DISTRICT |
1-HR OZONE DESIG-
NATION |
CLASSIF ICATION |
MAJOR SOURCE
NOX/VOC THRESHOLD (tons/yr) |
50% OF THRES-HOLD
(tons/yr) |
PM10 DESIG- NATION |
CLASSIF ICATION |
MAJOR SOURCE PM10
THRESHOLD (tons/yr) |
50% OF THRES- HOLD
(tons/yr) |
| Nevada |
Northern Sierra AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Orange |
South Coast AQMD |
N |
Extreme |
10 |
5 |
N |
Serious |
70 |
35 |
| Placer |
Placer APCD |
N |
Severe |
25 |
12.5 |
U/A |
|
100 |
50 |
| Plumas |
Northern Sierra AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Riverside |
South Coast AQMD |
N |
Extreme |
10 |
5 |
N |
Serious |
70 |
35 |
| Riverside |
Mojave Desert AQMD |
N* |
Severe |
25 |
12.5 |
N* |
Serious |
70 |
35 |
| Sacramento |
Sac. Metro AQMD |
N |
Severe |
25 |
12.5 |
N |
Moderate |
100 |
50 |
| San Benito |
Monterey Bay APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| San Bernardino |
South Coast AQMD |
N |
Extreme |
10 |
5 |
N |
Serious |
70 |
35 |
| San Bernardino |
Mojave Desert AQMD |
N* |
Severe |
25 |
12.5 |
N* |
Moderate |
100 |
50 |
| San Diego |
San Diego APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| San Francisco |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| San Joaquin |
SJV Unified APCD |
N |
Severe |
25 |
12.5 |
N |
Serious |
70 |
35 |
| San Luis Obispo |
San Luis Obispo APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| San Mateo |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| Santa Barbara |
Santa Barbara APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Santa Clara |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| Santa Cruz |
Monterey Bay APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Shasta |
Shasta AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Sierra |
Northern Sierra AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Siskiyou |
Siskiyou APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Solano |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| Solano |
Yolo-Solano AQMD |
N |
Severe |
25 |
12.5 |
U/A |
|
100 |
50 |
| Sonoma |
Bay Area AQMD |
N |
NC |
100 |
50 |
U/A |
|
100 |
50 |
| Sonoma |
Northern Sonoma APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Stanislaus |
SJV Unified APCD |
N |
Severe |
100 |
50 |
N |
Serious |
70 |
35 |
| Sutter (South) |
Feather River AQMD |
N* |
Severe |
25 |
12.5 |
U/A |
|
100 |
50 |
| Sutter (North) |
Feather River AQMD |
N |
Transition |
100 |
50 |
U/A |
|
100 |
50 |
| Tehama |
Tehama APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Trinity |
North Coast AQMD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Tulare |
SJV Unified APCD |
N |
Severe |
25 |
12.5 |
N |
Serious |
70 |
35 |
| Tuolumne |
Tuolumne APCD |
U/A |
|
100 |
50 |
U/A |
|
100 |
50 |
| Ventura |
Ventura APCD |
N |
Severe |
25 |
12.5 |
U/A |
|
100 |
50 |
| Yolo |
Yolo-Solano AQMD |
N |
Severe |
25 |
12.5 |
U/A |
|
100 |
50 |
| Yuba |
Feather River AQMD |
N |
Transition |
100 |
50 |
U/A |
|
100 |
50 |
| Notes: U/A =
Unclassified/Attainment; N =
Non-Attainment; N* = Non-attainment in
a portion of the county; NC = Not Classified |
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