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Oregon Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants

Data is current as of June 20, 2017

Listed by County, NAAQS, Area. The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.

* The 1997 Primary Annual PM-2.5 NAAQS (level of 15 µg/m3) is revoked in attainment and maintenance areas for that NAAQS. For additional information see the PM-2.5 NAAQS SIP Requirements Final Rule, effective October 24, 2016. (81 FR 58009)

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Important Notes
County NAAQS Area Name Nonattainment in Year Redesignation
to Maintenance
Classification Whole or/
Part County
Population
(2010
)
State/
County
FIPS Codes
OREGON
Clackamas Co 1-Hour Ozone (1979)-NAAQS revoked Portland-Vancouver AQMA, OR-WA
92 93 94 95 96                                                                                    
06/18/1997 Marginal Part 373,166 41/005
Clackamas Co Carbon Monoxide (1971) Portland, OR
92 93 94 95 96                                                                                    
10/02/1997 Moderate <= 12.7ppm Part 233,262 41/005
Jackson Co Carbon Monoxide (1971) Medford, OR
92 93 94 95 96 97 98 99 00 01                                                                
09/23/2002 Moderate <= 12.7ppm Part 86,056 41/029
Jackson Co PM-10 (1987) Medford-Ashland, OR
92 93 94 95 96 97 98 99 00 01 02 03 04 05                                                
08/18/2006 Moderate Part 87,458 41/029
Josephine Co Carbon Monoxide (1971) Grants Pass, OR
92 93 94 95 96 97 98 99                                                                        
10/30/2000 Moderate <= 12.7ppm Part 22,449 41/033
Josephine Co PM-10 (1987) Grants Pass, OR
92 93 94 95 96 97 98 99 00 01 02                                                            
12/26/2003 Moderate Part 22,449 41/033
Klamath Co Carbon Monoxide (1971) Klamath Falls, OR
92 93 94 95 96 97 98 99 00                                                                    
11/19/2001 Moderate <= 12.7ppm Part 20,703 41/035
Klamath Co PM-10 (1987) Klamath Falls, OR
92 93 94 95 96 97 98 99 00 01 02                                                            
12/22/2003 Moderate Part 20,703 41/035
Klamath Co PM-2.5 (2006) Klamath Falls, OR
                                                                    09 10 11 12 13 14 15 16 17
/ / Moderate Part 46,969 41/035
Lake Co PM-10 (1987) Lake Co, OR
    93 94 95 96 97 98 99 00 01 02 03 04 05                                                
07/19/2006 Moderate Part 3,296 41/037
Lane Co Carbon Monoxide (1971) Eugene-Springfield, OR
92 93                                                                                                
02/04/1994 Not Classified Part 234,972 41/039
Lane Co PM-10 (1987) Eugene-Springfield, OR
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12                    
06/10/2013 Moderate Part 195,160 41/039
Lane Co PM-10 (1987) Lane Co, OR
        94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17
/ / Moderate Part 3,728 41/039
Lane Co PM-2.5 (2006) Oakridge, OR
                                                                    09 10 11 12 13 14 15 16 17
/ / Moderate Part 4,261 41/039
Marion Co 1-Hour Ozone (1979)-NAAQS revoked Salem, OR
92 93 94 95 96 97 98 99 00 01 02 03 04                                                    
/ / Incomplete Data Part 313,385 41/047
Marion Co Carbon Monoxide (1971) Salem, OR
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08                                    
03/02/2009 Not Classified Part 80,695 41/047
Multnomah Co 1-Hour Ozone (1979)-NAAQS revoked Portland-Vancouver AQMA, OR-WA
92 93 94 95 96                                                                                    
06/18/1997 Marginal Part 377,954 41/051
Multnomah Co Carbon Monoxide (1971) Portland, OR
92 93 94 95 96                                                                                    
10/02/1997 Moderate <= 12.7ppm Part 629,654 41/051
Polk Co 1-Hour Ozone (1979)-NAAQS revoked Salem, OR
92 93 94 95 96 97 98 99 00 01 02 03 04                                                    
/ / Incomplete Data Part 75,179 41/053
Polk Co Carbon Monoxide (1971) Salem, OR
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08                                    
03/02/2009 Not Classified Part 75,405 41/053
Union Co PM-10 (1987) LaGrande, OR
92 93 94 95 96 97 98 99 00 01 02 03 04 05                                                
07/19/2006 Moderate Part 13,094 41/061
Washington Co 1-Hour Ozone (1979)-NAAQS revoked Portland-Vancouver AQMA, OR-WA
92 93 94 95 96                                                                                    
06/18/1997 Marginal Part 510,250 41/067
Washington Co Carbon Monoxide (1971) Portland, OR
92 93 94 95 96                                                                                    
10/02/1997 Moderate <= 12.7ppm Part 467,557 41/067
Important Notes

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