EPA Approved Source-Specific Requirements in the Idaho SIP
Latest EPA Action: September 5, 2025
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.
Copies of permits and compliance schedules available at the end of this page.
| Name of source | Permit Number | State effective date | EPA approval date | Explanation |
|---|---|---|---|---|
| LP Wood Polymers, Inc., Meridian, Idaho | Permit No. 001-00115 (pdf) | 7/12/2002 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 1.1, 1.3, 3.1, and the Appendix. (Boise/Ada County Maintenance Plan). |
| Consolidated Concrete Company, Boise, Idaho | Permit 001-00046 (pdf) | 12/3/2001 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 1.1, 1.3, 2.3, 3.1, 3.2, and the Appendix. (Boise/Ada County Maintenance Plan). |
| Crookham Company, Caldwell, Idaho | Permit 027-00020 (pdf) | 1/18/2002 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 1.1, 1.3, 2.1, 2.3, 3.1, 3.1.1, 3.1.2, 3.2, and the Appendix. (Boise/Ada County Maintenance Plan). |
| Double D Service Center, Meridian, Idaho | Permit 001-00168 (pdf) | 2/4/2002 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 1.1, 1.3, 3.1, 3.2.1, 3.2.2, 3.2.3, and the Appendix. (Boise/Ada County Maintenance Plan). |
| Plum Creek Northwest Lumber, Inc., Meridian, Idaho | Permit 001-00091 (pdf) | 7/12/2002 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 1.1, 1.3, 2.1.2, 3.1, and the Appendix. (Boise/Ada County Maintenance Plan). |
| C. Wright Construction, Inc., Meridian, Idaho | Permit T2-000033 (pdf) | 7/8/2003 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 2 (heading only), 2.5, (2.12, Table 2.2 as it applies to PM10), 2.14, 3 (heading only), 3.3, Table 3.2, 3.4, 3.5, 3.6, 3.7, 3.8, 3.10, 4 (heading only), 4.2, 4.3, 4.4, 4.7, 5, and Table 5.1. (Boise/Ada County Maintenance Plan). |
| Nelson Construction Co., Boise, Idaho | Permit T2-020029 (pdf) | 7/21/2003 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 2 (heading only), 2.12, 2.14, 3 (heading only), 3.3, 3.4, 3.6, 3.7, 3.9, 3.10, 3.11, 3.12, 4 (heading only), 4.3, 4.4, 4.5, 4.6, 5, and Table 5.1. (Boise/Ada County Maintenance Plan). |
| Mike's Sand and Gravel, Nampa, Idaho | Permit 001-00184 (pdf) | 7/12/2002 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 1.1, 1.3, 2.2.1, 3.1, and the Appendix. (Boise/Ada County Maintenance Plan). |
| Idaho Concrete Co., Eagle, Idaho | Permit T2-020031 (pdf) | 7/8/2003 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 2 (heading only), 2.5, 2.13, 3 (heading only), 3.3, 3.4, 3.6, 3.7, 3.8, 4 (heading only), and Table 4.1. (Boise/Ada County Maintenance Plan). |
| Idaho Concrete Co., Eagle, Idaho | Permit T2-020032 (pdf) | 7/8/2003 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 2 (heading only), 2.5, 2.13, 3 (heading only), 3.3, 3.4, 3.6, 3.7, 3.8, 4 (heading only), and Table 4.1. (Boise/Ada County Maintenance Plan). |
| Idaho Concrete Co. Eagle, Idaho | Permit T2-020033 (pdf) | 7/8/2003 | 10/27/2003 68 FR 61106 (pdf) (149 KB) | The following conditions: 2 (heading only), 2.5, 2.13, 3 (heading only), 3.3, 3.4, 3.6, 3.7, 3.8, 4 (heading only), and Table 4.1. (Boise/Ada County Maintenance Plan). |
| The Amalgamated Sugar Company LLC, Nampa, Idaho | Permit 027-00010 (pdf) | 9/30/2002 | 10/27/2003 68 FR 61106 (pdf) (149 KB) and 1/1/2004 69 FR 63324 (pdf) (148 KB) | The following conditions: 2 (heading only), (2.7, Table 2.2 as it applies to PM10,) 2.10, 2.10.1, 2.10.2, 2.11, 2.11.1, 2.11.2, 2.11.3, 2.11.4, 2.11.5, 2.12, 2.12.1, 2.12.2, 2.12.3, 2.13, 2.13.1, 2.13.2, 2.13.3, 2.14, 2.14.1, 2.14.2, 2.16, 3 (heading only), (3.3, Table 3.2 as it applies to PM10), 3.5, 3.7, 3.8, 3.8.1, 3.8.2, 3.8.3, 3.8.4, 3.8.5, 3.8.6, 3.8.7, 3.8.8, 3.9, 4 (heading only), (4.3, Table 4.1 as it applies to PM10), 4.5, 4.6, 4.7, 5 (heading only), (5.3, Table 5.3 as it applies to PM10), 5.5, 5.9, 5.9.1, 5.9.2, 5.9.3, 5.9.4, 5.9.5, 5.9.6, 5.9.7, 5.9.8, 5.9.9, 5.10, 5.11, 6 (heading only), 6.3, Table 6.1, 6.5, 6.6, 6.7, 6.7.1, 6.7.2, 6.8, 7 (heading only), 7.3, Table 7.1 as it applies to PM10, 7.5, 7.7, 7.7.1, 7.7.2, 7.8, 8 (heading only), 8.3, Table 8.1, 8.5, 8.7, 8.7.1, 8.7.2, 8.8, 9 (heading only), 9.3, Table 9.1, 9.5, 9.7, 9.7.1, 9.7.2, 9.8, 10 (heading only), 10.3, Table 10.1, 10.6, 10.8, 10.8.1, 10.8.2, 10.9, 11 (heading only), 11.3, Table 11.2, 11.6, 11.8, 11.8.1, 11.8.2, 11.9, 12 (heading only), 12.3, Table 12.1, 12.5, 12.7, 12.7.1, 12.7.2, 12.8, 13 (heading only), 13.1 (except as it applies to condition 13.3, 13.3.1, 13.3.2, 13.5, 13.5.1, 13.5.2, 13.5.3, 13.6, 13.6.1, 13.6.2 and 13.9), Table 13.1 (except conditions 13.3, 13.5 and 13.6), (13.2, Table 13.2 as it applies to PM10), 13.2.1, 13.4, 13.4.1, 13.4.2, 13.4.3, 13.7, 13.7.1, 13.7.2, 13.8, 13.8.1, 13.8.2, 13.8.3, 13.10, and 13.11. (Boise/Ada County PM10 Maintenance Plan). |
| Lake Pre-Mix, Sandpoint, Idaho | Permit 777-00182 (pdf) | 5/17/1996 | 6/26/2002 67 FR 43006 (pdf) (148 KB) | The following conditions for the cement silo vent: 1.1, 2.1.1, 2.1.2, 3.1.1, and 3.1.2. (Sandpoint nonattainment area plan). |
| Interstate Concrete and Asphalt, Sandpoint, Idaho | Permit 017-00048 (pdf) | 8/2/1999 | 6/26/2002 67 FR 43006 (pdf) (148 KB) | The following conditions: for the asphalt plant, 2.2, 3.1.1, 4.1, 4.1.1, 4.1.2, 4.2.1 (as it applies to the hourly PM10 emission limit in Appendix A), 4.2.2, 4.2.2.1, 4.2.2.2, and 4.2.2.3; for the concrete batch plant, 2.1, 3.1.1, 4.1, 4.1.1, and 4.1.2; Appendix A (as it applies to PM10 emission rates after 7/1/96) and Appendix B (as it applies after 7/1/96). (Sandpoint nonattainment area plan). |
| Whiteman Lumber Company, Cataldo, ID | Permit 13-1420-062 (pdf) | 7/16/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Silver Valley TSP Nonattainment Area Plan. |
| Potlatch Corporation, Pulp and Paper Unit, Lewiston, ID | Permit 13-1140-0001-00 (pdf) | 7/5/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Lewiston TSP Nonattainment Area Plan. |
| Potlatch Corporation, Clearwater Unit, Lewiston, ID | Permit 13-1140-0003 (pdf) | 7/5/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Lewiston TSP Nonattainment Area Plan. |
| Coast Trading Company, Inc., Lewiston, ID | Permit 13-1140-0011 (pdf) | 6/29/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Lewiston TSP Nonattainment Area Plan. |
| Lewis-Clark Terminal Association, Lewiston, ID | Permit 13-1140-0010 (pdf) | 6/29/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Lewiston TSP Nonattainment Area Plan. |
| Poe Asphalt, Lewiston, ID | Permit 0880-0008 (pdf) | 3/1/1976 (effective date) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Lewiston TSP Nonattainment Area Plan. |
| FMC Corporation, Pocatello, ID2 | Permit 13-1260-0005 (pdf) | 2/26/1980 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Pocatello TSP Nonattainment Area Plan. |
| J.R. Simplot, Pocatello, ID | Permit 13-1260-0006-00 (pdf) | 3/4/1980 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Pocatello TSP Nonattainment Area Plan. |
| Idaho Portland Cement Company, Inkom, ID | Permit 13-0080-0004-00 (pdf) | 7/18/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Pocatello TSP Nonattainment Area Plan. |
| J.R. Simplot Company, Conda, ID | Permit 13-0420-0021-00 (pdf) | 7/18/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Soda Springs TSP Nonattainment Area Plan. |
| Beker Industries, Conda, ID | Permit 13-0420-0003-00 (pdf) | 7/18/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Soda Springs TSP Nonattainment Area Plan. |
| Monsanto, Soda Springs, ID | Permit 13-0420-0001-00 (pdf) | 7/18/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Soda Springs TSP Nonattainment Area Plan. |
| Kerr McGee, Soda Springs, ID | Permit 13-0420-0002-00 (pdf) | 7/18/1979 (date issued) | 7/28/1982 47 FR 32530 (pdf) (682 KB) | Soda Springs TSP Nonattainment Area Plan. |
| J.R. Simplot, Pocatello, Idaho | Air Pollution Operating Permit Permit No. T1-9507-114-1 (pdf) ; Facility Number No. 077-00006 | 4/5/2004 | 7/13/2006 71 FR 39574 (pdf) (161 KB) | The following conditions: Cover page, facility identification information only, #300 Sulfuric Acid Plant, Permit Conditions 16.1, 16.10, 16.11, #400 Sulfuric Acid Plant, Permit Condition 17.1, 17.7, 17.10, 17.11, Phosphoric acid plant, Permit Condition 12.3, 12.13, Granulation No. 3 Process, Permit Condition 9.2.1, Granulation No. 3 stack, 9.17 (except 9.17.1 through 9.17.6), Reclaim Cooling Towers, Permit Condition 14.2, 14.6.1, Babcock & Wilcox Boiler, Permit Condition 6.4, 6.12, HPB&W Boiler, Permit Condition 5.3, 5.13 through 5.18, 5.21. |
| J.R. Simplot, Pocatello, Idaho | Compliance Agreement & Voluntary Order Idaho Code 39-116A (pdf) | 4/16/2004 | 7/13/2006 71 FR 39574 (pdf) (161 KB) | The following conditions: No. 300 Sulfuric Acid Plant; Condition 8 and 9. No. 400 Sulfuric Acid Plant; Condition 10, 11, and 12. Granulation No. 1 Plant; Condition 14. Granulation No. 2 Plant; Condition 15. Compliance and Performance Testing; Condition 16. |
| The Amalgamated Sugar Company LLC—Nampa Factory, Nampa, Idaho | Permit T2-2009.0105 (pdf) | 12/23/2011 (date issued) | 4/28/2014 79 FR 23273 (pdf) (254 KB) | The following conditions: 1.2, including the table of Regulated Emission Point Sources Table, 3.2, 3.3 (first paragraph only), 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.11, 3.13, 3.14, 3.15, 3.16, and 4.1. |
| P4 Production, L.L.C., Soda Springs, Idaho | Permit T2-2009.0109 (pdf) (pdf) | 11/17/2009 (date issued) | 6/22/2011 76 FR 36329 (pdf) (187 KB) | The following conditions: 1.2 (including Table 1.1), 2.3, 2.4, 2.5, 2.6, 2.7, and 2.8. (Regional Haze SIP Revision). |
| Clearwater Paper Corp, Lewiston, Idaho | Permit T1-2020-0024 (pdf) | 3/30/2023 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit conditions 5.4, 5.5, 5.6, 5.7, 5.10, 5.11, 5.12, 5.13, 5.14, 5.15, 7.1, 7.4, 7.9, 7.10, 8.1, 8.6, 9.1, 9.2, 9.6, 9.11, 26.22, 26.23, 26.26, 26.27, 26.28, and 26.29 only. |
| ITAFOS Conda LLC, Soda Springs, Idaho | Permit T1-2016.0015 (pdf) | 3/2/2022 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit conditions 5.1, 5.4, 5.5, 5.11, 16.22, and 16.23 only. |
| Northwest Pipeline LLC, Soda Springs, Idaho | Compliance Agreement Schedule Case No. E-2023.0011 (pdf) | 9/1/2023 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | |
| P4 Production LLC, Soda Springs, Idaho | Compliance Agreement Schedule Case No. E-2023.0013 (pdf) | 11/27/2021 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | |
| P4 Production LLC, Soda Springs, Idaho | Permit T1-2020.0029 (pdf) | 12/23/2021 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit conditions 4.2, 4.4, 4.5, 4.6, 4.7, 4.19, 4.20, 4.21, 13.22, and 13.33 only. |
| J.R. Simplot, Pocatello, Idaho | Permit T1-2017.0024 (pdf) | 3/29/2023 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit conditions 15.9, 15.10, 15.11, 15.19, 15.20, 15.21, 15.22, 15.25, 15.27, 16.6, 16.9, 16.10, 16.19, 16.20, 16.21, 16.22, 16.26, 16.27, 18.22, and 18.23 only. |
| Tamarack Mill LLC, New Meadows, Idaho | Permit T1-2019.0024 (pdf) | 10/17/2022 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit conditions 5.2, 5.3, 5.5, 5.8, 5.17, 10.22, and 10.23 only. |
| The Amalgamated Sugar Company LLC-Nampa Factory, Nampa, Idaho | Permit P-2018.0011 (pdf) | 2/15/2023 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit condition 4.8 only. |
| The Amalgamated Sugar Company LLC-Paul Factory, Paul, Idaho | Permit T1-2019.0020 (pdf) | 11/5/2021 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit conditions 4.3, 4.4, 4.5, 4.7, 4.9, 4.10, 4.11, 4.12, 4.15, 4.16, 4.18, 11.22, and 11.23 only. |
| The Amalgamated Sugar Company LLC-Twin Falls, Twin Falls, Idaho | Permit T1-2016.0017 (pdf) | 1/21/2022 | 9/5/2025 90 FR 42821 (pdf) (331 KB) | Permit condition 4.9 and 5.2 only. |
1EPA does not have the authority to remove these source-specific requirements in the absence of a demonstration that their removal would not interfere with attainment or maintenance of the NAAQS, violate any prevention of significant deterioration increment or result in visibility impairment. Idaho Department of Environmental Quality may request removal by submitting such a demonstration to EPA as a SIP revision.
2Only a small portion of this facility is located on State lands. The vast majority of the facility is located in Indian country. It is EPA's position that unless EPA has explicitly approved a program as applying in Indian country, State or local regulations or permits are not effective within the boundaries of that Indian country land for purposes of complying with the CAA. 68 FR 2217, 2220 (January 16, 2003).
Note: Strikeout text denotes sections not incorporated by reference by the EPA.