EPA-Approved Air Pollution Control Regulations for Pima County, AZ

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 documents and tables contain the contain EPA approved regulations for Pima County and are part of the Arizona State Implementation Plan (SIP). EPA's Pacific Southwest Office maintains these tables and will update them to reflect any changes 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
EPA-Approved Pima County Air Pollution Control Regulations
EPA-Approved Ordinances Adopted by Pima County and Other Local Jurisdictions Within Pima County

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.

Pima County Air Regulation Compilation (pdf) (27.01 MB, March 21, 2025)
EPA-Approved and Compiled rules and regulations of the Arizona State Implementation Plan (SIP) for Pima County.
Pima County Air Regulation Compilation, 1976-1978 (pdf) (2.13 MB, December 2021)
EPA approved and compiled rules and regulations of the Arizona State Implementation Plan (SIP) for Pima County prior to 1976.
Pima County Air Regulation Compilation, Pre-1976 (pdf) (2.25 MB, December 2021)
EPA approved and compiled rules and regulations of the Arizona State Implementation Plan (SIP) for Pima County prior to 1976.
City of Tucson Ordinance No. 6914 (pdf) (5.28 MB, March 28, 1988)
City of Tucson, Arizona, Travel Reduction Ordinance No. 6914.
City of South Tucson Ordinance 88-01 (pdf) (2.23 MB, March 28, 1988)
City of South Tucson Travel Reduction Code adopted through Resolutions No. 88-01 and 88-05.
Pima County Ordinance No. 1988-72 (pdf) (2.42 MB, April 12, 1988)
Pima County Board of Supervisors' Travel Reduction Ordinance No. 1988- 72.
Town of Marana Ordinance No. 88-06 (pdf) (2.21 MB, March 15, 1988)
Town of Marana Ordinance No. 88-06 Travel Reduction Code.
Town of Oro Valley Ordinance No. 162 (pdf) (2.54 MB, March 23, 1988)
Town of Oro Valley Travel Reduction Code adopted through Resolutions No. 162, 326 and 327.

EPA-Approved Pima County Air Pollution Control Regulations

Pre-1976 Rule Codification

Regulation I - General Provisions

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 2	Definitions	February 20, 1975	May 11, 1977, 42 FR 23802	Submitted on February 20, 1975.
Rule 3	Standard Conditions	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.
Rule 19	Decisions of Hearing Board; Subpoenas; Effective Date	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.
Rule 20	Judicial Review; Grounds; Procedures	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.
Rule 21	Notice of Hearing; Publication; Service	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.
Rule 22	Hearing Board Fees	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.

Regulation II - Emissions Prohibited

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 2B	Emissions of Particulate Matter	March 19, 1974	September 19, 1977, 42 FR 46926	Submitted on March 19, 1974.
Rule 3	Emissions of Gases, Vapors, Fumes or Odors	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.
Rule 5	Organic Solvents	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.
Rule 7	Emissions of Certain Sulfur Compounds	December 20, 1971	July 27, 1972, 37 FR 15080	Submitted on May 26, 1972.

1976-1978 Rule Codification

Regulation I - General Provisions

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 2, paragraphs uu-yy	Definitions	June 21, 1976	July 19, 1977, 42 FR 36998	Submitted on September 30, 1976.

Regulation II - Fuel Burning Equipment

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 2G (Paragraphs 1-4c)	Particulate Emissions	June 21, 1976	July 19, 1977, 42 FR 36998	Submitted on September 30, 1976.
Rule 7A (Paragraphs 1 and 6)	Emission Limitation, Fuel Burning Equipment - Sulfur Dioxide	June 21, 1976	July 19, 1977, 42 FR 36998	Submitted on September 30, 1976. Paragraphs 2 to 5 were disapproved. See 42 FR 36998 (July 19, 1977).
Rule 7B (Paragraphs 1-4)	Emission Limitation, Fuel Burning Equipment – Nitrogen Oxides	June 21, 1976	July 19, 1977, 42 FR 36998	Submitted on September 30, 1976.

Regulation VII - New Source Performance Standards

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Regulation VII (Paragraphs A-D)	Standards of Performance for New Stationary Sources	June 21, 1976	July 19, 1977, 42 FR 36998	Submitted on September 30, 1976.

Regulation VIII - National Emission Standards for Hazardous Air Pollutants

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Regulation VIII (Paragraphs A-C)	Emissions Standards for Hazardous Air Pollutants	June 21, 1976	July 19, 1977, 42 FR 36998	Submitted on September 30, 1976.

1979-1993 Rule Codification

Chapter I: General Provisions

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 101	Declaration of Policy	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 102	Purpose	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 103	Authority	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 111	General Applicability	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 112	State and/or County	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 113	Limitations	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 121	Air Quality Control District	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 122	Executive Head	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 123	Governing Body	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 151	Severability Clause	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 161	Format	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 162	Headings and Special Type	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 163	Use of Number and Gender	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 165	Effective Date	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 166	Adoption by Reference	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Rule 171	Words, Phrases, and Terms	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Rule 171 [paragraphs B.1 (“Air Contaminant or Air Pollutant”, B.1.a (“Common Air Pollutant”), B.7 (“Emission or Emissions”), B.8 (“Source or Existing Source”), C.1.a (“Existing Source”), C.1.b (“New Source”), C.2.a (“Major Source”), C.2.c (“New Major Source”), C.2.d (“Modification or Alteration”), C.3.a (“Stationary Source”), E.1.b (“Lowest Achievable Emission Rate” )]	Words, Phrases, and Terms	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.
Rule 172	Meanings of Mathematical Symbols	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 173	Chemical Symbols and Abbreviations	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 174	Scientific Units	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 175	Acronyms	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†

Chapter II: Permits

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 201	Statutory Authority	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 202, paragraph D only	Installation Permits	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Rule 202	Installation Permits	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 203	Operating Permits	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 211	Permit Application	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 212	Sampling, Testing, and Analysis Requirements	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 213	Public Notification/Public Comments	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 215	Permit Revocation	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 221	General Control	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 222	Permit Display or Posting	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 223	Permit Transferability	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 224	Fugitive Dust Producing Activities	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 225	Open Burning Permit Conditions	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 226	Permits for State-Delegated Emission Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 231	Non-Compliance	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 232	Notification of Denial	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 241	General Provisions	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 242	Installation Permit Fees/Non-Fee Requirements	June 1, 1981	April 16, 1982, 47 FR 16326	Submitted on June 1, 1981.
Rule 243	Open Burning Permit Fees	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 244	Operating Permit Fees	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 251	Permit Fee Studies Related to Inflation	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 252	Periodic Review of Individual Fee Schedules	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 261	Compliance Inspections	June 1, 1981	April 16, 1982, 47 FR 16326	Submitted on June 1, 1981.

Tables Cited by Rules in Chapter II

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Table 242	Activity Installation Permit Requirements for Construction/Destruction Activities	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Table 243	Open Burning Permit Fee Schedules	June 1, 1981	April 16, 1982, 47 FR 16326	Submitted on June 1, 1981.
Table 244-A	Equipment Operating Permit Fee Schedules for Categorical Sources	June 1, 1981	April 16, 1982, 47 FR 16326	Submitted on June 1, 1981.
Table 244-B	Equipment Operating Permit Fee Schedules for Non-Categorical Sources	June 1, 1981	April 16, 1982, 47 FR 16326	Submitted on June 1, 1981.
Table 244-C	Activity Operating Permit Fee Requirements	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Chapter III: Universal Control Standards

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 301	Planning, Constructing, or Operating Without a Permit	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 302	Non-Compliance with Applicable Standards	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 312	Asphalt Kettles	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 313	Incinerators	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 314	Petroleum Liquids	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 315	Roads and Streets	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 316	Particulate Materials	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 318	Vacant Lots and Open Spaces	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 321	Standards and Applicability	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 331	Applicability	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 332	Compilation of Mass Rates and Concentrations	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 341	Applicability	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 342	Mass - Concentration Ceilings	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 343	Visibility Limiting Standards	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 344	Odor Limiting Standards	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 371	Tucson Nonattainment Areas	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Rule 372	Ajo Area	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Rule 373	General County Areas	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Figure 371-A	Tucson Nonattainment Area for Total Suspended Particulates	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Figure 371-C	Tucson Nonattainment Area for Carbon Monoxide	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Figure 372	Approximate Boundaries of Ajo Area	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†
Rule 381, paragraph A, subparagraphs 1, 2, 3, 4, and 5, and paragraph B only	ADHS Nonattainment-Area Standards	December 6, 1983	August 10, 1988, 53 FR 30220; vacated; restored on January 29, 1991, 56 FR 3219	Submitted on October 18, 1985.†

Tables Cited by Rules in Chapter III

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Table 321, excluding the “Asbestos-Containing Operation” standards	Emissions-Discharge Opacity Limiting Standards	August 17, 1979	April 16, 1982, 47 FR 16326	Approval excludes the “Asbestos-Containing Operation” standards. Submitted on October 9, 1979.
Table 332, excluding lines (h)-(m)	Emissions-Discharge Mass Limiting Standards	August 17, 1979	April 16, 1982, 47 FR 16326	Approval excludes lines (h)-(m). Submitted on October 9, 1979.
Table 341, excluding the Beryllium ceilings	Maximum Allowable Pollutant-Concentration Ceilings in Ambient Air	August 17, 1979	April 16, 1982, 47 FR 16326	Approval excludes the beryllium ceilings. Submitted on October 9, 1979.

Chapter IV: Performance Standards for New Major Sources

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 402	Stack and Shop Emissions	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 403	Applicability of More Than One Standard	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 411	Tucson Area	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 412	Ajo Area	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 413	General County Areas	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 421	Applicability	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.
Rule 422	TSP Clean Air Plan	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.
Rule 423	TSP Emission Data Bank	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.
Rule 424	Emission Offset Requirement	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.
Rule 425	Lowest Achievable Emission Rate	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.
Rule 426	Existing Sources in Compliance	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.

Chapter V: Testing and Monitoring

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 501	Applicability of Methodology	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 502	Testing Frequencies	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 503	Notification; Fees	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 504, part E, paragraph 2	Pre-Installation Testing or Modeling Requirements	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on June 1, 1981.
Rule 504	Pre-Installation Testing or Modeling Requirements	August 17, 1979	July 7, 1982, 47 FR 29532	Submitted on October 9, 1979.
Rule 505	Sampling and Testing Facilities	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 506	Stack Sampling	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 507	Waiver of Test Requirements	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 511	General Requirements	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 512	In-Stack Monitoring	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Chapter VI: Recordkeeping and Reporting

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Regulation 60 (“Classification of Pollutants”), Rule 601	Classification of Common and Hazardous Air Pollutants	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 611, paragraph A only	Recordkeeping for Compliance Determinations	June 1, 1981	April 16, 1982, 47 FR 16326	Approval included paragraph A only. Submitted on June 1, 1981.
Rule 611, paragraphs A.1 to A.3 only	Recordkeeping for Compliance Determinations	August 17, 1979	April 16, 1982, 47 FR 16326	Approval included paragraphs A.1 to A.3 only. Submitted on October 9, 1979.
Rule 612	Recordkeeping for Emissions Inventories	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 621	Reporting for Compliance Evaluations	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 622	Reporting as a Permit Requirement	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 623	Reporting for Emissions Inventories	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 624	Reporting for TSP Emission Data Bank	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 641	Suppression; False Information	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Tables Cited by Rules in Chapter VI

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Table 603	Methodology for Entering Records of Emissions into TSP Data Bank	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Chapter VII: Violations and Judicial Procedures

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 701	Criminal Complaint	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 703	Injunction	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 704	Precedence of Actions	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 705	Penalties	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 706, paragraphs D.1 and D.2 only	Reviews for Startup, Shutdown, or Malfunctions	August 17, 1979	April 16, 1982, 47 FR 16326	Approval included paragraphs D.1 and D.2 only. Submitted on June 1, 1981.
Rule 706, paragraphs A to C, D.3, D.4, and E only	Reviews for Startup, Shutdown, or Malfunctions	August 17, 1979	April 16, 1982, 47 FR 16326	Approval included paragraphs A to C, D.3, D.4, and E only. Submitted on October 9, 1979.
Rule 721	Evasion of Basic Requirements	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 722	Concealment of Emissions	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Chapter VIII: Emergency Episodes and Public Awareness

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 801	State Jurisdiction	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 802	Determination of Emergency Conditions	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 803	Emergency Episode Reporting	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 804	Enforcement Actions	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 811	Continuous Monitoring of Ambient Air Pollution	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 821	Reports to the Public	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 822	General Information	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 823	Public Participation in Rulemaking	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Tables Cited by Rules in Chapter VIII

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Table 802	Air Pollution Episode Criteria	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Table 804	Possible Control Actions During Various Stages of an Air Pollution Episode	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Chapter IX: Appendix

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Rule 901	General Affidavit of Delegation	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 902	Political Sub-Divisions Delegation	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 903	Large Power Plants Delegation	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 904	Unpaved Roads Delegation	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 1	Sample and Velocity Traverses for Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 2	Determination of Stack Gas Velocity and Volumetric Flow Rate (Type S Pitot Tube)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 3	Gas Analysis for Carbon Dioxide, Excess Air, and Dry Molecular Weight	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 4	Determination of Moisture in Stack Gases	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 5	Determination of Particulate Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 6	Determination of Sulfur Dioxide Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 7	Determination of Nitrogen Oxide Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 8	Determination of Sulfuric Acid Mist and Sulfur Dioxide Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 9	Visual Determination of the Opacity of Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 10	Determination of Carbon Monoxide Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 11	Determination of Hydrogen Sulfide Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 16	Semi-Continuous Determination of Sulfur Emissions from Stationary Sources	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 17	Determination of Particulate Emissions from Stationary Sources (In-Stack Filtration Method)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 19	Determination of Sulfur Dioxide Removal Efficiency and Particulate, Sulfur Dioxide and Nitrogen Oxides Emission Rates from Electric Utility Steam Generators	June 1, 1981	April 16, 1982, 47 FR 16326	Submitted on June 1, 1981.
Rule 911 (“Emissions Discharge Testing for Common Air Pollutants”), Method 20	Determination of Nitrogen Oxides, Sulfur Dioxide and Oxygen Emissions from Stationary Gas Turbines	June 1, 1981	April 16, 1982, 47 FR 16326	Submitted on June 1, 1981.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method A	Reference Method for the Determination of Sulfur Dioxide in the Atmosphere (Pararosaniline Method)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method B	Reference Method for the Determination of Suspended Particulates in the Atmosphere (High Volume Method)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method C	Measurement Principle and Calibration Procedure for the Continuous Measurement of Carbon Monoxide in the Atmosphere (Non-Dispersive Infrared Spectrometry)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method D	Measurement Principle and Calibration Procedure for the Measurement of Ozone in the Atmosphere	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method E	Reference Method for Determination of Hydrocarbons Corrected for Methane	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method F	Measurement Principle and Calibration Procedure for the Measurement of Nitrogen Dioxide in the Atmosphere (Gas Phase Chemiluminescence)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method G	Reference Method for the Determination of Lead in Suspended Particulate Matter collected from Ambient Air	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 913 (“Ambient Air Testing for Common Air Pollutants”), Method H	Interpretation of the National Ambient Air Quality Standards for Ozone	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 921	General Specifications	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 922	Performance Specification 1 (Opacity)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 923	Performance Specification 2 (SO₂ and NO_X)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 924	Performance Specification 3 (CO₂ and O₂)	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 931	Guideline on Air Quality Models	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.
Rule 932	Workbook for Comparison of Air Quality Models	August 17, 1979	April 16, 1982, 47 FR 16326	Submitted on October 9, 1979.

Post-1993 Rule Codification

Pima County Code

Title 17. Air Quality Control

Chapter 12. Permits and Permit Revisions

Article V. Open Burning Permits
County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
17.12.480	Open burning permits	October 19, 2004	May 16, 2006, 71 FR 28270	Submitted on December 30, 2004.

Chapter 17.16. Emission Limiting Standards

Article III. Emissions from Existing and New Nonpoint Sources
County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
17.16.125	Inactive Mineral Tailings Impoundment and Slag Storage Area within the Ajo PM₁₀ Planning Area	February 21, 2019	7/15/2020, 85 FR 42726	Submitted on May 10, 2019.

† Vacated by the U.S. Court of Appeals for the Ninth Circuit in Delaney v. EPA, 898 F.2d 687 (9th Cir. 1990). Restored on January 29, 1991, 56 FR 3219.

EPA-Approved Ordinances Adopted by Pima County and Other Local Jurisdictions Within Pima County

County Citation	Title/Subject	State Effective Date	EPA Approval Date	Additional Explanation
Pima County Ordinance No. 1988-72 (PDF) (17 pp, 3 MB, April 12, 1988)	Travel Reduction Ordinance	April 18, 1988	January 29, 1991, 56 FR 3219	Submitted on May 26, 1988.
City of Tucson Ordinance No. 6914 (PDF) (14 pp, 6 MB, March 28, 1988)	Travel Reduction Ordinance	April 18, 1988	January 29, 1991, 56 FR 3219	Submitted on May 26, 1988.
City of South Tucson Ordinance 88-01 (PDF) (16 pp, 2 MB, March 28, 1988)	Travel Reduction Code	April 18, 1988	January 29, 1991, 56 FR 3219	Adopted through Resolutions No. 88-01 and 88-05.
Town of Marana Ordinance No. 88-06 (PDF) (18 pp, 2 MB, March 15, 1988)	Travel Reduction Code	April 18, 1988	January 29, 1991, 56 FR 3219	Adopted through Resolutions No. 88-06 and 88-07. Submitted on May 26, 1988.
Town of Oro Valley Ordinance No. 162 (PDF) (18 pp, 3 MB, March 23, 1988)	Travel Reduction Code	April 18, 1988	January 29, 1991, 56 FR 3219	Adopted through Resolutions No. 162, 326 and 327.

EPA-Approved Air Pollution Control Regulations for Pima County, AZ

Compiled Rules and Regulations

EPA-Approved Pima County Air Pollution Control Regulations

Pre-1976 Rule Codification

Regulation I - General Provisions

Regulation II - Emissions Prohibited

1976-1978 Rule Codification

Regulation I - General Provisions

Regulation II - Fuel Burning Equipment

Regulation VII - New Source Performance Standards

Regulation VIII - National Emission Standards for Hazardous Air Pollutants

1979-1993 Rule Codification

Chapter I: General Provisions

Chapter II: Permits

Tables Cited by Rules in Chapter II

Chapter III: Universal Control Standards

Tables Cited by Rules in Chapter III

Chapter IV: Performance Standards for New Major Sources

Chapter V: Testing and Monitoring

Chapter VI: Recordkeeping and Reporting

Tables Cited by Rules in Chapter VI

Chapter VII: Violations and Judicial Procedures

Chapter VIII: Emergency Episodes and Public Awareness

Tables Cited by Rules in Chapter VIII

Chapter IX: Appendix

Post-1993 Rule Codification

Pima County Code

Title 17. Air Quality Control

Chapter 12. Permits and Permit Revisions

Chapter 17.16. Emission Limiting Standards

EPA-Approved Ordinances Adopted by Pima County and Other Local Jurisdictions Within Pima County

Air Quality Implementation Plans