EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Idaho SIP

Latest EPA Action: December 5, 2024

Note: The official SIPs are contained in regulations promulgated in the Federal Register and codified in the U.S. Code of Federal Regulations (CFR). EPA’s web-versions of the approved SIPs are for reference. While we make every effort to maintain the accuracy of the files accessible here, inconsistencies may occur. Please contact us if you find any errors in these files.

40 CFR Part 52.670(e) Table 5 to Paragraph (e) - State Provisions Approved But Not Incorporated by Reference Name of SIP provision Applicable geographic or nonattainment area State submittal date EPA approval date Explanations Appendix A.2—Idaho Environmental Protection and Health Act, Idaho Code Section 39-101 et seq.State-wide3/15/2001 1/16/2003
68 FR 2217 (PDF)Four sections of Appendix A.3—Rules and Regulations for Control of Air Pollution in Idaho—that were approved but not incorporated by reference in section (c)State-wide5/17/1994 1/16/2003
68 FR 2217 (PDF)IDAPA 58.01.01.000 (legal authority), 58.01.01.002 (written interpretations), 58.01.01.003 (administrative appeals), and 58.01.01.128 (confidential business information).Idaho State Board SIP Revision; Idaho Code §§59-701 through 705; Ethics in Government ActState-wide9/16/2013 10/24/2013
78 FR 63394 (PDF)To satisfy the requirements of CAA section 128(a)(2) and CAA section 110(a)(2)(E)(ii) for all criteria pollutants. Idaho Department of Environmental Quality letter dated October 18, 2013 supplementing the May 9, 2013 SIP SubmittalState-wide10/24/2013 3/3/2014
79 FR 11711 (PDF)Road Sanding Agreement, Idaho Transportation Department to Idaho Department of Environmental Quality (Voluntary Measure)Franklin County, Logan UT-ID PM2.5 Nonattainment Area12/19/2012 3/25/2014
79 FR 16201 (PDF)Fine Particulate Matter Control Measures; Franklin County. Letter of Intent PM 2.5 Reduction, Franklin County Road Department to Department of Environmental Quality (Voluntary Measure)Franklin County, Logan UT-ID PM2.5 Nonattainment Area12/19/2012 3/25/2014
79 FR 16201 (PDF)Fine Particulate Matter Control Measures; Franklin County.
Table 6 to Paragraph (e) - State Attainment, Maintenance, and Other Plans
Name of SIP provision	Applicable geographic or nonattainment area	State submittal date	EPA approval date	Explanations
Chapter I—Introduction	State-wide	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Chapter II—Administration	State-wide	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Chapter III—Emission Inventory	State-wide	1/15/1980; 2/14/1980	7/28/1982 47 FR 32530 (PDF)
Chapter IV—Air Quality Monitoring	State-wide	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Chapter V—Source Surveillance	State-wide	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Chapter VI—Emergency Episode Plan	State-wide	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Chapter VIII—Nonattainment Area Plans
Chapter VIII-a	Silver Valley TSP Nonattainment Area Plan	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Chapter VIII-b	Lewiston TSP Nonattainment Area Plan	1/15/1980; 12/4/1980; and 2/5/1981	7/28/1982 47 FR 32530 (PDF)
Chapter VIII-c	Transportation Control Plan for carbon monoxide, Ada County	5/24/1984; 1/3/1985; 3/25/1985; and 6/29/1994	7/28/1982 47 FR 32530 (PDF) 6/6/1985 50 FR 23810 (PDF) 12/1/1994 59 FR 61546 (PDF)
Chapter VIII-d	Pocatello TSP Nonattainment Area Plan	3/7/1980 and 2/5/1981	7/28/1982 47 FR 32530 (PDF)
Chapter VIII-e	Soda Springs TSP Nonattainment Area Plan	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Chapter VIII-f	Pinehurst PM-10 Nonattainment Area Plan	4/14/1992	8/25/1994 59 FR 43745 (PDF)
Chapter VIII-g	Northern Ada County PM10 Nonattainment Area Plan	11/14/1991; 12/30/1994; and 7/13/1995	5/30/1996 61 FR 27019 (PDF)
Chapter VIII-h	Sandpoint PM10 Nonattainment Area Plan	8/16/1996	6/26/2002 67 FR 43006 (PDF)
Chapter VIII-i	Northern Ada County CO Limited Maintenance Plan	1/17/2002	10/28/2002 67 FR 65713 (PDF)
Chapter VIII-j	Ada County/Boise Idaho PM-10 Maintenance Plan	9/27/2002; 7/10/2003; and 7/21/2003	10/27/2003 68 FR 61106 (PDF)
Chapter IX—Reserved
Chapter X—Plan for Maintenance of National Ambient Air Quality Standards for Lead	State-wide	2/3/1984	6/4/1984 (EPA effective date)
Small Business Assistance Program	State-wide	1/3/1994	9/19/1994 59 FR 47801 (PDF)
Appendix A—Legal Authority and Other Administrative Matters	State-wide	1/15/1980	7/28/1982 47 FR 32530 (PDF)
Northern Ada County Air Quality Maintenance Area Second 10-year Carbon Monoxide Limited Maintenance Plan	Northern Ada County	2/10/2011	8/2/2012 77 FR 45962 (PDF)
Northern Ada County Carbon Monoxide Limited Maintenance Plan Revision	Northern Ada County	12/29/2022	6/15/2023 88 FR 39177 (PDF)	Removal of I/M Program.
Northern Ada County PM10 Second Ten-Year Maintenance Plan	Northern Ada County	3/11/2013	10/2/2014 79 FR 59435 (PDF)
Portneuf Valley PM10 Nonattainment Area Plan and Maintenance Plan	Portneuf Valley	7/13/2006	7/13/2006 71 FR 39574 (PDF)
Portneuf Valley PM10 Maintenance Plan—Revision	Portneuf Valley	4/21/2014	7/17/2014 79 FR 41647 (PDF)
Pinehurst PM10 Contingency Measures	Pinehurst/Shoshone County	7/13/1995	10/2/2014 79 FR 59435 (PDF)
Pinehurst PM₁₀ Limited Maintenance Plan	Shoshone County; Pinehurst Expansion Area and City of Pinehurst	9/29/2017	9/11/2018 83 FR 45830 (PDF)
Sandpoint PM10 Nonattainment Area Limited Maintenance Plan	Bonner County: Sandpoint Area	12/14/2011	4/3/2013 78 FR 20001 (PDF)
Fine Particulate Matter Baseline Emissions Inventory	Franklin County, Logan UT-ID PM2.5 Nonattainment Area	12/19/2012	7/18/2014 79 FR 41904 (PDF)	Fine Particulate Matter; Franklin County.
Cache Valley Fine Particulate Matter Attainment Plan	Franklin County, Logan UT-ID- PM_2.5Nonattainment Area	12/19/2012, 12/24/2014, 7/31/2018	1/4/2017 82 FR 729 (PDF) 8/8/2017 82 FR 37025 (PDF) 2/20/2020 85 FR 9666 (PDF)
Cache Valley Fine Particulate Matter Maintenance Plan	Franklin County, Logan UT-ID PM_2.5 Area	9/13/2019	5/21/2021 86 FR 27532 (PDF)
West Silver Valley PM_2.5 Maintenance Plan	West Silver Valley, ID	6/2/2020	11/16/2021 86 FR 63315 (PDF)
Open Burning of Crop Residue State Implementation Plan Revision	State-wide	5/28/2008	8/1/2008 73 FR 44915 (PDF)
Open Burning of Crop Residue State Implementation Plan Revision	State-wide	9/22/2017; 10/23/2017	6/19/2018 83 FR 28382 (PDF)	Original submission and supplemental modeling analyses.
Interstate Transport State Implementation Plan, May 11, 2010 (see comments)	State-wide	6/28/2010	11/26/2010 75 FR 72705 (PDF)	For the 1997 8-hour ozone NAAQS and the 1997 PM2.5 NAAQS. See docket EPA-R10-OAR-2010-0669.
Section 110(a)(2) Infrastructure Requirements for the 1997 8-hour Ozone NAAQS	Statewide	9/15/2008; 6/24/2010	7/17/2012 77 FR 41916 (PDF)	This action addresses following CAA elements or portions thereof: 110(a)(2)(A), (B), (C), (D)(ii), (E)(i), (E)(iii), (F), (G), (H), (J), (K), (L), and (M).
Section 110(a)(2) Infrastructure Requirements for the 2008 Pb NAAQS	State-wide	2/14/2012	5/22/2014 79 FR 29358 (PDF)	This action addresses the following CAA elements: 110(a)(2)(A), (B), (C), (D), (E), (F), (G), (H), (J), (K), (L), and (M).
Section 110(a)(2) Infrastructure Requirements for the 1997 PM2.5 NAAQS	State-wide	9/15/2008; 6/28/2010	7/14/2014 79 FR 40662 (PDF)	This action addresses the following CAA elements or portions thereof: 110(a)(2)(A), (B), (C), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).
Section 110(a)(2) Infrastructure Requirements for the 2006 PM2.5 NAAQS	State-wide	6/28/2010; 8/10/2011	7/14/2014 79 FR 40662 (PDF)	This action addresses the following CAA elements or portions thereof: 110(a)(2)(A), (B), (C), (D)(i)(II), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).
Section 110(a)(2) Infrastructure Requirements for the 2008 Ozone NAAQS	State-wide	6/28/2010	7/14/2014 79 FR 40662 (PDF)	This action addresses the following CAA elements or portions thereof: 110(a)(2)(A), (B), (C), (D)(i)(II), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).
Section 110(a)(2) Infrastructure Requirements for the 2010 NO₂ NAAQS	State-wide	9/16/2013	8/11/2014 79 FR 46708 (PDF)	This action addresses the following CAA elements or portions thereof: 110(a)(2)(A), (B), (C), (D)(i)(II), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).
Section 110(a)(2) Infrastructure Requirements for the 2010 SO₂ NAAQS	State-wide	9/16/2013	8/11/2014 79 FR 46708 (PDF)	This action addresses the following CAA elements or portions thereof: 110(a)(2)(A), (B), (C), (D)(i)(II), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M).
Interstate Transport Requirements for the 2006 24-hour PM_2.5 NAAQS	State-wide	6/28/2010	4/17/2015 80 FR 21181 (PDF)	This action addresses the following CAA elements: 110(a)(2)(D)(i)(I).
Interstate Transport Requirements for the 2008 Ozone NAAQS	State-wide	6/28/2010	12/18/2015 80 FR 78981 (PDF)	This action addresses the following CAA elements: 110(a)(2)(D)(i)(I).
Interstate Transport Requirements for the 2010 NO₂ NAAQS	State-wide	12/24/2015	5/5/2016 81 FR 27017 (PDF)	This action addresses the following CAA elements: 110(a)(2)(D)(i)(I).
Section 110(a)(2) Infrastructure Requirements - 2012 PM_2.5 NAAQS	State-wide	12/23/2015	12/4/2017 82 FR 57132 (PDF)	Approves SIP for purposes of CAA sections 110(a)(2)(A), (B), (C), (D)(i)(II), (D)(ii), (E), (F), (G), (H), (J), (K), (L), (M) for the 2012 PM_2.5 NAAQS.
Interstate Transport Requirements for the 2012 PM_2.5 NAAQS	State-wide	12/23/2015	9/24/2018 83 FR 48240 (PDF)	This action addresses CAA 110(a)(2)(D)(i)(I).
Section 110(a)(2) Infrastructure Requirements - 2015 ozone NAAQS	State-wide	9/27/2018	9/16/2020 85 FR 57723 (PDF)	Approves SIP for purposes of CAA sections 110(a)(2)(A), (B), (C), (D)(i)(II), (D)(ii), (E), (F), (G), (H), (J), (K), (L), and (M) for the 2015 ozone NAAQS.
Interstate Transport Requirements - 2015 Ozone NAAQS	State-wide	9/26/2018	10/16/2020 85 FR 65722 (PDF)	This action addresses CAA 110(a)(2)(D)(i)(I).
Interstate Transport Requirements for the 2010 Sulfur Dioxide NAAQS	State-wide	12/24/2015	4/9/2021 86 FR 18458 (PDF)	This action addresses CAA 110(a)(2)(D)(i)(I).
Regional Haze SIP Revision	State-wide	10/25/2010	6/22/2011 76 FR 36329 (PDF)	The portion of the Regional Haze SIP revision relating to BART, the calculation of baseline and natural conditions, and the statewide inventory of emissions of pollutants that are reasonably anticipated to cause or contribute to visibility impairment in any mandatory Class I Federal Area.
Regional Haze SIP Revision	State-wide	10/25/2010	11/8/2012 77 FR 66929 (PDF)	The portion of the Regional Haze SIP relating to the reasonable progress goals, long term strategy, monitoring strategy, consultation with states and Federal Land Managers, periodic SIP revisions, and 5-year progress reports.
Regional Haze SIP Revision	State-wide	6/29/2012	4/28/2014 79 FR 23273 (PDF)	The portion of the Regional Haze SIP relating to BART for the TASCO, Nampa facility.
Regional Haze 5-Year Progress Report	State-wide	6/28/2016	7/15/2019 84 FR 33697 (PDF)

EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Idaho SIP

Air Quality Implementation Plans