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Utah 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 The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.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
UTAH
Box Elder Co PM-2.5 (2006) Salt Lake City, UT
                                                                    09 10 11 12 13 14 15 16 17
/ / Serious Part 49,057 49/003
Cache Co PM-2.5 (2006) Logan, UT-ID
                                                                    09 10 11 12 13 14 15 16 17
/ / Moderate Part 112,675 49/005
Davis Co 1-Hour Ozone (1979)-NAAQS revoked Salt Lake City, UT
92 93 94 95 96                                                                                    
08/18/1997 Moderate Whole 306,479 49/011
Davis Co PM-2.5 (2006) Salt Lake City, UT
                                                                    09 10 11 12 13 14 15 16 17
/ / Serious Whole 306,479 49/011
Salt Lake Co 1-Hour Ozone (1979)-NAAQS revoked Salt Lake City, UT
92 93 94 95 96                                                                                    
08/18/1997 Moderate Whole 1,029,655 49/035
Salt Lake Co Carbon Monoxide (1971) Salt Lake City, UT
92 93 94 95 96 97 98                                                                            
03/22/1999 Not Classified Part 186,440 49/035
Salt Lake Co PM-10 (1987) Salt Lake Co, UT
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
/ / Moderate Whole 1,029,655 49/035
Salt Lake Co PM-2.5 (2006) Salt Lake City, UT
                                                                    09 10 11 12 13 14 15 16 17
/ / Serious Whole 1,029,655 49/035
Salt Lake Co Sulfur Dioxide (1971) Salt Lake Co, UT
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
/ /   Whole 1,029,655 49/035
Tooele Co PM-2.5 (2006) Salt Lake City, UT
                                                                    09 10 11 12 13 14 15 16 17
/ / Serious Part 54,958 49/045
Tooele Co Sulfur Dioxide (1971) Tooele Co, UT
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
/ /   Part 58,218 49/045
Utah Co Carbon Monoxide (1971) Provo, UT
92 93 94 95 96 97 98 99 00 01 02 03 04 05                                                
01/03/2006 Moderate > 12.7ppm Part 166,596 49/049
Utah Co PM-10 (1987) Utah Co, UT
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
/ / Moderate Whole 516,564 49/049
Utah Co PM-2.5 (2006) Provo, UT
                                                                    09 10 11 12 13 14 15 16 17
/ / Serious Part 517,537 49/049
Weber Co Carbon Monoxide (1971) Ogden, UT
92 93 94 95 96 97 98 99 00                                                                    
05/08/2001 Moderate <= 12.7ppm Part 82,825 49/057
Weber Co PM-10 (1987) Ogden, UT
            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 82,825 49/057
Weber Co PM-2.5 (2006) Salt Lake City, UT
                                                                    09 10 11 12 13 14 15 16 17
/ / Serious Part 224,988 49/057
Important Notes

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