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

Compiled Rules and Regulations

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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 Paragraph (b)(4) was rescinded, and paragraph (c)(2) was superseded at 44 FR 5662 (January 29, 1979). Paragraph (b)(2) was superseded at 47 FR 3550 (January 26, 1982).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).