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  2. Air Quality Implementation Plans

EPA-Approved Yolo-Solano Air District Regulations in the California SIP

EPA’s Pacific Southwest (Region 9) implements and enforces federal environmental laws in Arizona, California, Hawaii, Nevada, the Pacific Islands, and 148 Tribal Nations.

The following document and tables contain the EPA approved rules and regulations for the Yolo-Solano Air Quality Management District (AQMD) portion of the California State Implementation Plan (SIP). EPA's Pacific Southwest Office maintains these tables and will update them to reflect any changes in the official tables codified in the Code of Federal Regulations. To find the status of SIP submittals, visit SIP Status Reports.

On this page:
  • Compiled Rules and Regulations
  • Tables of Rules and Regulations
    • Regulation I – General Provisions
    • Regulation II – Prohibitions, Exceptions - Requirements
    • Regulation III - Permit System
    • Regulation IV – Fees
    • Regulation VI - Agricultural Burning
    • Regulation X - Mobile and Indirect Sources
    • Regulation XI - Agricultural Sources

Compiled Rules and Regulations

Free viewers and readers are available to access documents on our website. If you encounter issues with assistive technology, please contact us.

  • EPA Approved and Compiled Rules and Regulations: Yolo-Solano AQMD (pdf) (9.4 MB, June 25, 2024)
    EPA approved and compiled rules and regulations of the Yolo-Solano Air Quality Management District (AQMD) portion of the California State Implementation Plan (SIP).

Tables of EPA-Approved Rules and Regulations

Regulation I – General Provisions

District Citation Title/Subject State Effective Date EPA Approval Date Additional Explanation
1.1 General Provisions and Definitions July 8, 2015 June 16, 2016, 81 FR 39211 Submitted on November 13, 2015. See 40 CFR 52.220(c)(472)(i)(A)(1).

Regulation II – Prohibitions, Exceptions - Requirements

District Citation Title/Subject State Effective Date EPA Approval Date Additional Explanation
2.1 Control of Emissions October 1, 1971 May 31, 1972, 37 FR 10842 Submitted on February 21, 1972. See 40 CFR 52.220(b).
2.2 Alteration of Permit October 1, 1971 May 31, 1972, 37 FR 10842 Submitted on February 21, 1972. See 40 CFR 52.220(b).
2.3 Ringelmann Chart January 13, 2010 April 18, 2012, 77 FR 23133 Submitted on July 20, 2010. See 40 CFR 52.220(c)(381)(i)(I)(1).
2.8 (excluding paragraphs (b)(2), (b)(4), (c)(2), (c)(4) and (c)(5)) Open Burning February 5, 1973 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A). Paragraphs (c)(4) and (c)(5) were disapproved at 43 FR 25675 (June 14, 1978). Paragraph (b)(4) was rescinded, and paragraph (c)(2) was superseded at 44 FR 5662 (January 29, 1979). Paragraph (b)(2) was superseded at 47 FR 3550 (January 26, 1982).
2.8 (paragraph (b)(2)) Open Burning September 26, 1979 January 26, 1982, 47 FR 3550 Submitted on December 17, 1979. See 40 CFR 52.220(c)(58(vii)(A).
2.8 (paragraph (c)(2)) Open Burning September 28, 1977 January 29, 1979, 44 FR 5662 Submitted on June 22, 1978. See 40 CFR 52.220(c)(44)(iv)(A).
2.9 Open Burning Certain Materials February 5, 1973 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A).
2.10 Incinerator Burning October 1, 1971 May 31, 1972, 37 FR 10842 Submitted on February 21, 1972. See 40 CFR 52.220(b).
2.11 Particulate Matter Concentration January 13, 2010 April 18, 2012, 77 FR 23133 Submitted on July 20, 2010. See 40 CFR 52.220(c)(381)(i)(I)(2).
2.12 Specific Contaminants January 13, 2010 April 18, 2012, 77 FR 23133 Submitted on July 20, 2010. See 40 CFR 52.220(c)(381)(i)(I)(3).
2.14 Architectural Coatings October 12, 2016 July 12, 2018, 83 FR 32211 Submitted on January 24, 2017. See 40 CFR 52.220(c)(497)(i)(D)(2).
2.16 Fuel Burning Equipment October 1, 1971 May 31, 1972, 37 FR 10842 Submitted on February 21, 1972. See 40 CFR 52.220(b).
2.17 Circumvention September 28, 1977 January 29, 1979, 44 FR 5662 Submitted on June 22, 1978. See 40 CFR 52.220(c)(44)(iv)(A).
2.19 Particulate Matter Process Emission Rate April 24, 1974 June 14, 1978, 43 FR 25675 Submitted on July 19, 1974. See 40 CFR 52.220(c)(24)(ix)(B).
2.20 Orchard Heaters September 28, 1977 January 29, 1979, 44 FR 5662 Submitted on June 22, 1978. See 40 CFR 52.220(c)(44)(iv)(A).
2.21 Organic Liquid Storage and Transfer September 14, 2016 April 2, 2018, 83 FR 13867 Submitted on January 24, 2017. See 40 CFR 52.220(c)(497)(i)(D)(1).
2.22 Gasoline Dispensing Facilities January 14, 2015 February 9, 2016, 81 FR 6763 Submitted on June 26, 2015. See 40 CFR 52.220(c)(463)(i)(B)(2).
2.23 Fugitive Hydrocarbon Emissions March 23, 1994 November 26, 1999, 64 FR 66393 Submitted on November 30, 1994. See 40 CFR 52.220(c)(207)(i)(C)(8).
2.25 Metal Parts and Products Coating Operations April 27, 1994 February 12, 1996, 61 FR 5288 Submitted on November 30, 1994. See 40 CFR 52.220(c)(207)(i)(C)(3).
2.26 Motor Vehicle and Mobile Equipment Coating Operations December 10, 2008 December 8, 2015, 80 FR 76219 Submitted on June 26, 2015. See 40 CFR 52.220(c)(463)(i)(B)(1).
2.27 Large Boilers May 15, 2019 September 10, 2021, 86 FR 50645 Submitted electronically on August 19, 2019 as an attachment to a letter dated August 16, 2021. See 40 CFR 52.220(c)(542)(i)(C)(1).
2.28 Cutback and Emulsified Asphalts May 25, 1994 February 5, 1996, 61 FR 4215 Submitted on November 30, 1994. See 40 CFR 52.220(c)(207)(i)(C)(2).
2.29 Graphic Arts Printing Operations July 11, 2018 July 22, 2021, 86 FR 38562 Submitted on August 20, 2018 as an attachment to a letter dated August 15, 2018. See 40 CFR 52.220(c)(559)(i)(A)(1).
2.30 Polyester Resin Operations April 14, 1999 July 21, 1999, 64 FR 39037 Submitted on June 3, 1999. See 40 CFR 52.220(c)(264)(i)(B)(1).
2.31  Solvent Cleaning and Degreasing July 14, 2021 May 12, 2023, 88 FR 30652 Submitted on July 18, 2022. See 40 CFR 52.220(c)(596)(i)(A)(1).
2.32 Stationary Internal Combustion Engines October 10, 2001 January 28, 2002, 67 FR 3816 Submitted on November 28, 2001. See 40 CFR 52.220(c)(289)(i)(A)(1).
2.33 Adhesive Operations March 12, 2003 March 22, 2004, 69 FR 13234 Submitted on June 5, 2003. See 40 CFR 52.220(c)(316)(i)(E)(1).
2.34 Stationary Gas Turbines November 12, 2014 February 9, 2016, 81 FR 6763 Submitted on June 26, 2015. See 40 CFR 52.220(c)(463)(i)(B)(3).
2.35 Pharmaceutical Manufacturing Operations September 14, 1994 February 24, 1997, 62 FR 8171 Submitted on November 30, 1994. See 40 CFR 52.220(c)(207)(i)(C)(5).
2.37 Natural Gas-Fired Water Heaters and Small Boilers April 8, 2009 May 10, 2010, 75 FR 25778 Submitted on September 15, 2009. See 40 CFR 52.220(c)(377)(i)(B)(1).
2.41 Expandable Polystyrene Manufacturing Operations September 10, 2008 September 8, 2011, 76 FR 55581 Submitted on December 23, 2008. See 40 CFR 52.220(c)(364)(i)(C)(1).
2.42 Nitric Acid Production May 13, 2009 May 10, 2010, 75 FR 25778 Submitted on September 15, 2009. See 40 CFR 52.220(c)(377)(i)(B)(2).
2.43 Biomass Boilers December 13, 2023 March 14, 2024, 89 FR 18546 Submitted on February 14, 2024. See 40 CFR 52.220(c)(612)(i)(A)(1)

Regulation III – Permit Systems

District Citation Title/Subject State Effective Date EPA Approval Date Additional Explanation
3.1 (excluding sections 403 and 406) General Permit Requirements February 23, 1994 July 7, 1997, 62 FR 36214 Submitted on October 19, 1994. See 40 CFR 52.220(c)(202)(i)(F)(1). Sections 403 ("Denial of Applications") and 406 ("Appeals") were deleted without replacement at 69 FR 67062 (November 16, 2004).
3.2 Exemptions August 25, 1993 July 7, 1997, 62 FR 36214 Submitted on March 29, 1994. See 40 CFR 52.220(c)(196)(i)(D)(1).
3.4 New Source Review December 11, 1996 July 7, 1997, 62 FR 36214 Submitted on March 26, 1997. See 40 CFR 52.220(c)(245)(i)(A)(1).
3.14 Emission Reduction Credits September 22, 1993 July 7, 1997, 62 FR 36214 Submitted on March 29, 1994. See 40 CFR 52.220(c)(196)(i)(D)(1).
3.15 Priority Reserve September 22, 1993 July 7, 1997, 62 FR 36214 Submitted on March 29, 1994. See 40 CFR 52.220(c)(196)(i)(D)(1).
3.18 Emission Statements July 28, 1993 May 26, 2004, 69 FR 29880 Submitted on November 18, 1993. See 40 CFR 52.220(c)(194)(i)(J)(1).
3.21 Rice Straw Emission Reduction Credits December 10, 2008 June 29, 2010, 75 FR 37308 Submitted on March 17, 2009. See 40 CFR 52.220(c)(363)(i)(C)(1).
3.24 Prevention of Significant Deterioration June 13, 2012 December 10, 2012, 77 FR 73316 Submitted on July 3, 2012. See 40 CFR 52.220(c)(420)(i)(A)(1). Final approval of Rule 3.24 is based, in part, on the clarifications contained in the letter dated August 7, 2012 from Mat Ehrhardt, YSAQMD, to Gerardo Rios, U.S. EPA Region 9, regarding clarifications of District Rule 210.4. The August 7, 2012 letter is listed in the tables of nonregulatory materials approved as part of the California SIP.
3.25 Federal New Source Review for New and Modified Major PM2.5 Sources May 15, 2019 December 30, 2019, 84 FR 71824 Submitted on June 4, 2019. See 40 CFR 52.220(c)(524)(i)(A)(1).

Regulation IV – Fees

District Citation Title/Subject State Effective Date EPA Approval Date Additional Explanation
4.4 (paragraph b) Analysis Fees September 28, 1977 January 29, 1979, 44 FR 5662 Submitted on June 22, 1978. See 40 CFR 52.220(c)(44)(iv)(A).

Regulation VI – Agricultural Burning

District Citation Title/Subject State Effective Date EPA Approval Date Additional Explanation
6.1 Prohibitions July 23, 1980 January 26, 1982, 47 FR 3549 Submitted on November 3, 1980. See 40 CFR 52.220(c)(96)(iv)(A).
6.1 (paragraphs (f)(3) and (g)(5)) Prohibitions June 23, 1982 June 1, 1983, 48 FR 24362 The amendments adopted by Yolo-Solano AQMD on June 23, 1982 added paragraphs (f)(3) and (g)(5). Submitted on November 8, 1982. See 40 CFR 52.220(c)(126)(vi)(A).
6.1 (paragraph (j)) Prohibitions December 4, 1972 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A).
6.2 Permits to Burn December 4, 1972 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A).
6.3 Special Permits July 23, 1980 January 26, 1982, 47 FR 3549 Submitted on November 3, 1980. See 40 CFR 52.220(c)(96)(iv)(A).
6.4 Forms December 4, 1972 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A).
[6.5] (codified as Rule 4.5) Standards for Granting Applications October 1, 1971 May 31, 1972, 37 FR 10842 Rule 4.5 was included in Regulation IV (Agricultural Burning) in the original Rules and Regulations adopted by the Yolo-Solano AQMD. Submitted on February 21, 1972. See 40 CFR 52.220(b).
6.5 (excluding paragraph (a)) Standards for Granting Applications December 4, 1972 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A). Paragraph (a) was disapproved at 43 FR 25675 (June 14, 1978).
6.6 Restricted Burning Days September 26, 1979 January 26, 1982, 47 FR 3550 Submitted on December 17, 1979. See 40 CFR 52.220(c)(58(vii)(A).
6.7 (excluding paragraph (f)) Permit Form December 4, 1972 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A). Paragraph (f) was superseded by approval of Rule 6.7 (paragraph (f)) at 44 FR 5662 (January 29, 1979).
6.7 (paragraph (f)) Permit Form September 28, 1977 January 29, 1979, 44 FR 5662 Submitted on June 22, 1978. See 40 CFR 52.220(c)(44)(iv)(A).
6.8 Fire Prevention December 4, 1972 June 14, 1978, 43 FR 25675 Submitted on July 25, 1973. See 40 CFR 52.220(c)(21)(xiv)(A).

Regulation X – Mobile and Indirect Sources

District Citation Title/Subject State Effective Date EPA Approval Date Additional Explanation
10.3 General Conformity February 8, 1995 April 23, 1999, 64 FR 19916 Submitted on December 3, 1998. See 40 CFR 52.220(c)(259)(i)(A)(1).

Regulation XI – Agricultural Sources

District Citation Title/Subject State Effective Date EPA Approval Date Additional Explanation
11.2 Confined Animal Facilities Permit Program June 14, 2006 March 13, 2017, 82 FR 13398 Submitted on October 5, 2006. See 40 CFR 52.220(c)(347)(i)(E)(1).

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Last updated on October 21, 2024
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