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

Data is current as of April 30, 2019

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 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.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
IDAHO
Ada County Carbon Monoxide (1971) Boise-Northern Ada County, ID
92 93 94 95 96 97 98 99 00 01                                                                        
12/27/2002 Not Classified Part 257,440 16/001
Ada County PM-10 (1987) Boise-Northern Ada County, ID
                            99 00 01 02                                                                    
11/26/2003 Moderate Part 240,254 16/001
Bannock County PM-10 (1987) Portneuf Valley, ID
92 93 94 95 96 97 98 99 00 01 02 03 04 05                                                        
08/14/2006 Moderate Part 65,778 16/005
Bannock County PM-10 (1987) Fort Hall Indian Reservation
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19
/ / Moderate Part 315 16/005
Bonner County PM-10 (1987) Bonner Co (Sandpoint), ID
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12                            
05/03/2013 Moderate Part 40,876 16/017
Franklin County PM-2.5 (2006) Logan, UT-ID
                                                                    09 10 11 12 13 14 15 16 17 18 19
/ / Moderate Part 12,523 16/041
Power County PM-10 (1987) Portneuf Valley, ID
92 93 94 95 96 97 98 99 00 01 02 03 04 05                                                        
08/14/2006 Moderate Part 6,618 16/077
Power County PM-10 (1987) Fort Hall Indian Reservation
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19
/ / Moderate Part 276 16/077
Shoshone County PM-10 (1987) Pinehurst, ID
92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17        
10/11/2018 Moderate Part 1,578 16/079
Shoshone County PM-10 (1987) Shoshone Co, ID
        94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17        
10/11/2018 Moderate Part 9,691 16/079
Shoshone County PM-2.5 (2012) West Silver Valley, ID
                                                                                            15 16 17 18 19
/ / Moderate Part 7,497 16/079
Important Notes

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