Carbon Monoxide (1971) Federal Register Notice Classification Changes

Data is current as of November 30, 2024
Ordered by Classification

Click on the 'FR' link to view the Federal Register Notice

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SERIOUS
Anchorage, AK
Reclassify from Moderate > 12.7 ppm to Serious
Proposed Approval	12/02/1997	62 FR 63687
Final Approval	06/12/1998	63 FR 32128	Effective: 07/13/1998
Denver-Boulder, CO
Reclassify from Moderate > 12.7 ppm to Serious
Proposed Approval	07/09/1996	61 FR 36004
Final Approval	03/10/1997	62 FR 10690	Effective: 04/09/1997
Fairbanks, AK
Reclassify from Moderate <= 12.7 ppm to Serious
Proposed Approval	08/08/1997	62 FR 42717
Final Approval	02/27/1998	63 FR 9945	Effective: 03/30/1998
Las Vegas, NV
Reclassify from Moderate > 12.7 ppm to Serious
Proposed Approval	06/26/1997	62 FR 34419
Final Approval	10/02/1997	62 FR 51604	Effective: 11/03/1997
Phoenix, AZ
Reclassify from Moderate <= 12.7ppm to Serious.
Proposed Approval	05/10/1996	61 FR 21415
Final Approval	07/29/1996	61 FR 39343	Effective: 08/28/1996
Spokane, WA
Reclassify from Moderate > 12.7 ppm to Serious
Proposed Approval	07/01/1996	61 FR 33879
Final Approval	03/12/1998	63 FR 12007	Effective: 04/13/1998

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