AQ-2021-001-IBR REPORTTOBOS-2021-10-20.PDF

Executive Summary 
of the Report to the Board of Supervisors 
Prepared by the Maricopa County Air Quality Department 
Board Hearing Date: 
October 20, 2021 
Case #/Title:  
AQ-2021-001-Incorporation by Reference [2020-2021] 
Agenda Item: 
(Pending) 
Supervisor Districts: 
All Districts 
The Maricopa County Air Quality Department (MCAQD) complied with all statutory and county 
policies throughout this rulemaking process. Per the Enhanced Regulatory Outreach Program 
(EROP) Policy: “In addition to the required staff report, an executive summary of the report 
including an overview of stakeholder input and staff responses will be provided to the Board of 
Supervisors at least one week prior to any Board of Supervisors’ public hearing.” 
Overview of the Report to the Board of Supervisors: 
The Maricopa County Air Pollution Control Regulations contain several rules, Rules 360, 370, 371, 
and Appendix G, which incorporate by reference federal regulations from Title 40 of the Code of 
Federal Regulations. These federal regulations include New Source Performance Standards (NSPS), 
National Emission Standards for Hazardous Air Pollutants (NESHAP) and Acid Rain regulations. 
Every July 1, the U.S. Environmental Protection Agency (EPA) codifies revisions made to these 
federal regulations during the preceding year. The purpose of this rulemaking is to incorporate by 
reference the applicable federal regulations as codified on July 1, 2021, and thereby update Rules 
360, 370, 371, and Appendix G with any revisions made to the corresponding federal rules during 
the preceding year. This is necessary in order to continue to comply with the MCAQD’s delegated 
authority from EPA to implement and enforce NSPS, NESHAP, and acid rain programs in 
Maricopa County, except for those specific authorities retained by the EPA. After the rules are 
adopted by the Board of Supervisors, the MCAQD will request delegation authority from the EPA 
to implement and enforce the federal standards. 
Overview of Stakeholder Input and Staff Responses: 
No written comments were received regarding this rulemaking.

Report to the Board of Supervisors 
Prepared by the Maricopa County Air Quality Department 
Board Hearing Date: 
October 20, 2021 
Case #/Title:  
AQ- 2021-001-Incorporation by Reference [2020-2021] 
Agenda Item: 
(Pending) 
Supervisor Districts: 
All Districts 
Applicant: 
Staff 
Request: 
Approve the incorporation of applicable federal regulations codified 
on July 1, 2021 into the following Maricopa County Air Pollution 
Control Regulations: Rule 360 (New Source Performance Standards), 
Rule 370 (Federal Hazardous Air Pollutant Program), Rule 371 (Acid 
Rain), and Appendix G (Incorporated Materials). 
The Maricopa County Air Pollution Control Regulations contain 
several rules, Rules 360, 370, 371, and Appendix G, which 
incorporate by reference federal regulations from Title 40 of the 
Code of Federal Regulations. These federal regulations include New 
Source Performance Standards (NSPS), National Emission Standards 
for Hazardous Air Pollutants (NESHAP) and Acid Rain regulations. 
Every July 1, the U.S. Environmental Protection Agency (EPA) 
codifies revisions and additions made to these federal regulations 
during the preceding year. The purpose of this rulemaking is to 
incorporate by reference the applicable federal regulations as codified 
on July 1, 2021, and thereby update Rules 360, 370, 371, and 
Appendix G with any revisions and additions made to the 
corresponding federal rules during the preceding year. This is 
necessary in order to continue to comply with the MCAQD’s 
delegated authority from EPA to implement and enforce NSPS, 
NESHAP, and acid rain programs in Maricopa County, except for 
those specific authorities retained by the EPA. After the rules are 
adopted by the Board of Supervisors, the MCAQD will request 
delegation authority from the EPA to implement and enforce the 
federal standards. 
Support/Opposition:  
No written comments were received regarding this rulemaking. 
Staff Recommendation: 
Approve 
Board of Health 
Recommendation:  
This regulatory change is following the Enhanced Regulatory 
Outreach Program (EROP) Policy as an Incorporation by Reference 
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rulemaking. As such, it was not required to be reviewed by the Board 
of Health. 
Additional Comments:  
The Maricopa County Manager was briefed on this rulemaking June 
17, 2021. A Notice of Expedited Rulemaking was posted to EROP 
on July 28, 2021. A newspaper notice of the Board of Supervisors 
public hearing will be published in the Arizona Business Gazette on 
September 16, 2021, and on September 23, 2021. This regulatory 
change will take effect immediately upon approval by the Board of 
Supervisors. 
Presented by:  
Philip A. McNeely, R.G., Director 
Prepared by:  
Planning and Analysis Division 
Attachments: 
Preamble required by Arizona Revised Statutes (A.R.S.) § 49-471.08 
(See the Draft Notice of Final Rulemaking) 
Summary of the proposed regulatory change (See Item #4 of the 
Draft Notice of Final Rulemaking) 
Analysis of input received during the process and how that input was 
responded to (See Item #9 of the Draft Notice of Final Rulemaking) 
Language of proposed regulatory change or amendment (See the 
Draft Notice of Final Rulemaking) 
Minutes from all public meetings 
(no formal meetings were requested or held) 
Copies of all written and electronic Stakeholder input 
(no comments were received for this rulemaking) 
 
 
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DRAFT NOTICE OF FINAL RULEMAKING 
MARICOPA COUNTY AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 360: NEW SOURCE PERFORMANCE STANDARDS 
RULE 370: FEDERAL HAZARDOUS AIR POLLUTANT PROGRAM 
RULE 371: ACID RAIN 
APPENDIX G: INCORPORATED MATERIALS 
The Maricopa County Air Quality Department (MCAQD) is proposing to incorporate by reference the 
applicable federal regulations as codified on July 1, 2021, into the corresponding local rules and appendix: 
Rule 360, Rule 370, Rule 371, and Appendix G. The Control Officer is posting this Draft Notice of Final 
Rulemaking on the Maricopa County Enhanced Regulatory Outreach Program (EROP) website as part 
of the Report to the Board of Supervisors, in accordance with the Maricopa County EROP Policy. This 
notice contains a preamble as prescribed in A.R.S. § 49-471.05, the written findings required by A.R.S. § 
49-471.08.A.2, and the full text of the rules, including the intended actions to make new sections or 
amend, repeal, or renumber the sections of the rules. This notice also includes a list of all previous 
notices posted on the Maricopa County EROP website addressing the proposed rules and appendix and 
the concise explanatory statement prescribed in A.R.S. § 49-471.07, subsection B. 
PREAMBLE 
1.
Statutory authority for the rulemaking:
A.R.S. §§ 49-112, 49-471.08, 49-474, 49-479, and 49-480
2.
Name and address of department personnel with whom persons may communicate
regarding the rulemaking:
Name:
Scott Kahldon or Kimberly Butler 
Maricopa County Air Quality Department 
Planning and Analysis Division 
Address: 
3800 N Central Avenue, Suite 1400 
Phoenix, AZ 85012 
Telephone:
602-506-6010
Fax:
602-506-6179
Email: 
AQPlanning@maricopa.gov 
Submit 
Comments At: 
http://maricopa.gov/FormCenter/Regulatory-Outreach-17/Citizen-
Comments-94 
3.
Rulemaking process:
This rulemaking is following the rulemaking requirements pursuant to A.R.S. § 49-471.08 and
the Maricopa County EROP Policy, incorporation by reference process.
County Manager Briefing: 
June 17, 2021 
Return to list of attachments
3

Notice of Expedited Rulemaking 
July 28, 2021 
Board of Supervisors Formal Meeting to Set 
Public Hearing 
September 15, 2021 
Board of Supervisors Public Hearing 
October 20, 2021 
4.
Explanation of the rule, including the control officer's reasons for initiating the
rulemaking:
The Maricopa County Air Pollution Control Regulations contain several rules, Rules 360, 370, 371
and Appendix G, which incorporate by reference federal regulations from Title 40 of the Code of
Federal Regulations. These federal regulations include New Source Performance Standards
(NSPS), National Emission Standards for Hazardous Air Pollutants (NESHAP) and Acid Rain
regulations. Every July 1, the U.S. Environmental Protection Agency (EPA) codifies revisions
made to these federal regulations during the preceding year. The purpose of this rulemaking is to
incorporate by reference the applicable federal regulations as codified on July 1, 2021, and thereby
update Rules 360, 370, 371, and Appendix G with any revisions made to the corresponding
federal rules during the preceding year. This is necessary in order to continue to comply with the
MCAQD’s delegated authority from EPA to implement and enforce NSPS, NESHAP, and acid
rain programs in Maricopa County, except for those specific authorities retained by the EPA.
After the rules are adopted by the Board of Supervisors, the MCAQD will request delegation
authority from the EPA to implement and enforce the federal standards.
Below are revisions made to federal regulations in 40 CFR Parts 51, 58, 60, 61, and 63
between July 1, 2020 and June 30, 2021 that are proposed to be included in Rules 360, 370
and Appendix G through this rulemaking.
Rule 360:
- 
To include revisions to 40 CFR Part 60 Subparts Kb, BBa, AAA, WWW, XXX, 
CCCC, IIII, JJJJ, KKKK, QQQQ, OOOO, and OOOOa. 
Rule 370: 
- 
To include revisions to 40 CFR Part 63 Subparts A, F, G, H, J, L, M, N, O, Q, R, S, 
T, U, W, Y, AA, BB, DD, EE, GG, HH, II, JJ, KK, LL, MM, SS, XX, YY, CCC, 
DDD, EEE, GGG, HHH, III, JJJ, MMM, NNN, OOO, PPP, RRR, VVV, XXX, 
AAAA, DDDD, EEEE, FFFF, GGGG, HHHH, IIII, JJJJ, KKKK, MMMM, 
NNNN, OOOO, PPPP, QQQQ, RRRR, SSSS, TTTT, UUUU, VVVV, WWWW, 
XXXX, YYYY, ZZZZ, AAAAA, BBBBB, CCCCC, DDDDD, EEEEE, FFFFF, 
GGGGG, HHHHH, IIIII, JJJJJ, KKKKK, LLLLL, MMMMM, NNNNN, PPPPP, 
QQQQQ, RRRRR, SSSSS, TTTTT, WWWWW, ZZZZZ, BBBBBB, CCCCCC, 
HHHHHH, PPPPPP, QQQQQQ, RRRRRR, TTTTTT, WWWWWW, XXXXXX, 
YYYYYY, AAAAAAA, BBBBBBB, CCCCCCC, and HHHHHHH. 
Rule 371: 
- 
There were no revisions to 40 CFR Part 72, Part 74, Part 75 or Part 76. 
Appendix G: 
- 
To include revisions to 40 CFR Part 53 (Ambient Air Monitoring Reference and 
Equivalent Methods) and to the test method and performance specifications in: 
Return to list of attachments
4

○
Appendix M of 40 CFR Part 51
○
Appendices A-3, A-4, A-5, A-6, A-7, A-8, B, and F of 40 CFR Part 60
○
Appendix B of 40 CFR Part 61
○
Appendix A of 40 CFR Part 63
Revision of the incorporation by reference date for Rules 360, 370, 371, and Appendix G 
from July 1, 2020, to July 1, 2021 is also proposed. 
In addition, the proposed amendments will also remove the “Availability of Information” 
sections from each of the rules. 
5.
Studies relied on in the control officer's evaluation of or justification for the rule and
where the public may obtain or review the studies, all data underlying the studies, any
analysis of the studies and other supporting material.
The MCAQD did not conduct or review any studies related to this expedited rulemaking
action. Any study, data, analysis, or other review of supporting material occurred during the
development of the federal standard and are included in the federal register notices. Copies
of the federal register notices are available online at https://www.federalregister.gov/
6.
An economic, small business and consumer impact statement:
The MCAQD is not required to prepare an economic, small business, and consumer impact
statement for an expedited rulemaking pursuant to A.R.S. § 41-1055(D)(2).
7.
The proposed effective date of the rule:
The proposed effective date of this rulemaking is October 20, 2021.
8.
Such other matters as are prescribed by statute and that are applicable to the county
or to any specific rule or class of rules:
A.R.S. § 49-471.08(A)(2): Written finding by the Control Officer setting forth the reasons
why the rule or ordinance making is necessary and does not alter the sense, meaning, or
effect of the federal or state rule or law from which it is derived.
This rulemaking is required to update the applicability dates in these rules. It incorporates
subparts that have been codified on July 1, 2021, by the federal government and which are
required to be implemented by the MCAQD. Rules 360, 370, 371, and Appendix G do not
alter the sense, meaning or effect of the federal regulations from which they are derived, as
they incorporate language that is essentially the same as the federal code of regulations.
9.
List of all previous notices posted to the Maricopa County EROP website addressing
the proposed rule and a concise explanatory statement, as prescribed by A.R.S. § 49-
471.07, subsection B:
(a) List of all previous notices posted to the Maricopa County EROP website
addressing the proposed rule: 
Notice 
Date of Posting 
Briefing Notification to County Manager  
June 17, 2021 
Return to list of attachments
5

Notice of Expedited Rulemaking  
July 28, 2021 
(b) The following discussion addresses each of the elements required for a concise 
explanatory statement, as prescribed by A.R.S. § 49-471.07, subsection B: 
No changes to the rules were made after the Notice of Expedited Rulemaking was 
posted on July 28, 2021. 
The MCAQD did not receive any written comments from stakeholders. 
EXACT WORDING OF THE RULES 
Draft Rule 360 - Strikethrough and Underline Version
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 360 
NEW SOURCE PERFORMANCE STANDARDS 
INDEX 
SECTION 100 – GENERAL 
101 
PURPOSE 
102 
APPLICABILITY 
103 
AVAILABILITY OF INFORMATION 
104 
103 
FEDERAL DELEGATION AUTHORITY 
SECTION 200 – DEFINITIONS 
201 
ADMINISTRATOR 
202 
AFFECTED FACILITY 
203 
COMMENCED 
204 
CONSTRUCTION 
205 
MODIFICATION 
206 
OWNER OR OPERATOR 
207 
STANDARD 
208 
STATIONARY SOURCE 
SECTION 300 – STANDARDS 
301 
ADOPTED FEDERAL STANDARDS 
302 
ADDITIONAL REQUIREMENTS 
Return to list of attachments
6

SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE)
7

Revised 07/13/1988; Revised 04/06/1992; Revised 11/20/1996; Revised 05/14/1997; Revised 
08/19/1998; Revised 04/07/1999; Revised 03/01/2000; Revised 03/07/2001; Revised 11/19/2003; 
Revised 03/15/2006; Revised 12/17/2008; Revised 09/16/2009; Revised 07/07/2010; Revised 
08/17/2011; Revised 07/25/2012; Revised 03/26/2014; Revised 11/05/2014; Revised 11/18/2015; 
Revised 11/02/2016; Revised 12/13/2017; Revised 11/07/2018; Revised 10/23/2019; and Revised 
11/18/2020; and Revised MM/DD/YYYY 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 360 
NEW SOURCE PERFORMANCE STANDARDS 
SECTION 100 – GENERAL 
101 
PURPOSE: To establish acceptable design and performance criteria for specified new or 
modified emission sources. 
102 
APPLICABILITY: The provisions of this rule apply to the owner or operator of any 
stationary source which contains an affected facility on which the construction, 
reconstruction, or a modification is commenced after the date of publication of any standard 
applicable to such facility in 40 CFR Part 60 and for which federal delegation of the 
implementation and enforcement of the standards to the Maricopa County Air Quality 
Department (MCAQD) has been accomplished. Any such stationary source must also 
comply with other Maricopa County Air Pollution Control Regulations. 
103 
AVAILABILITY OF INFORMATION: Copies of all 40 CFR, Part 60 revisions currently 
enforced by the MCAQD are available as listed: 
a.
Maricopa County Air Quality Department.
b. Maricopa County Rules are available electronically at
https://www.maricopa.gov/1951/Adopted-Rules 
c.
EPA documents are available electronically at https://www.ecfr.gov/cgi-bin/text-
idx?SID=3e92ce0bdd77277b5f6e386319a9b84e&mc=true&tpl=/ecfrbrowse/Title40/4
0tab_02.tpl 
d. ASTM standards are available from ASTM International, 100 Barr Harbor Drive, P.O.
Box C700, West Conshohocken, PA 19428, or from its website at www.astm.org 
104 
103 
FEDERAL DELEGATION AUTHORITY: The  MCAQD shall enforce the federal 
new source performance standards (NSPS) (40 CFR Part 60) listed in Section 300 of this rule 
which have been delegated to the County by the United States Environmental Protection 
Agency (EPA) for such enforcement. The MCAQD may, in addition, enforce such other 
NSPS as delegated for such enforcement by the EPA to the MCAQD. 
SECTION 200 – DEFINITIONS: For the purpose of this rule, the following definitions shall 
apply, in addition to those definitions found in Rule 100 (General Provisions and Definitions) of 
8

these rules. In the event of any inconsistency between any of the Maricopa County air pollution 
control rules, the definitions in this rule take precedence. 
201 
ADMINISTRATOR: As used in Part 60, Title 40, Code of Federal Regulations, shall mean 
the Control Officer, except that the Control Officer shall not be empowered to approve 
alternate or equivalent test methods or alternative standards/work practices, or other 
nondelegable authorities such as those listed in 40 CFR 60.4(d), except as specifically 
provided in each subpart. 
202 
AFFECTED FACILITY: With reference to a stationary source, any apparatus to which a 
standard is applicable. 
203 
COMMENCED: With respect to the definition of "new source" in Section 111(a)(2) of the 
Act, that an owner or operator has undertaken a continuous program of construction, 
reconstruction, or modification or that an owner or operator has entered into a contracted 
obligation to undertake and complete, within a reasonable time, a continuous program of 
construction, reconstruction or modification. 
204 
CONSTRUCTION: The fabrication, erection, or installation of an affected facility. 
205 
MODIFICATION: Any physical change in, or change in the method of operation of, an 
existing facility which increases the amount of any contaminant (to which a standard applies) 
emitted into the atmosphere by that facility or which results in the emission of any air 
contaminant (to which a standard applies) into the atmosphere not previously emitted. 
206 
OWNER OR OPERATOR: Any person who owns, leases, operates, controls, or 
supervises an affected facility or a stationary source of which an affected facility is a part. 
207 
STANDARD: A standard of performance promulgated under this rule. 
208 
STATIONARY SOURCE: Any building, structure, facility, or installation which emits or 
may emit any air pollutant. 
SECTION 300 – STANDARDS 
301 
ADOPTED FEDERAL STANDARDS: The following federal regulations located in the 
U.S. Code of Federal Regulations, Part 60 of Title 40, Subchapter C (CFR) as codified on 
July 1, 2020 2021, are herein incorporated by reference in Maricopa County’s Air Pollution 
Control Regulations. This incorporation by reference includes no future editions or 
amendments. Each owner or operator subject to the requirements of the following subparts 
shall comply with the requirements of those subparts and the additional requirements set 
forth herein. Incorporation by reference does not include nondelegable functions of the 
EPA Administrator. 
301.1 Subpart A—General Provisions; exclude any sections dealing with equivalency 
determinations or innovative technology waivers, as covered in Sections 111(h)(3) 
and 111(j) respectively of the Clean Air Act. 
301.2 Subpart D—Standards of Performance for Fossil-Fuel-Fired Steam Generators for 
which Construction is Commenced after August 17, 1971. 
9

301.3 Subpart Da—Standards of Performance for Electric Utility Steam Generating Units 
for which Construction is Commenced after September 18, 1978. 
301.4 Subpart Db—Standards of Performance for Industrial-Commercial-Institutional 
Steam Generating Units. 
301.5 Subpart Dc—Standards of Performance for Small Industrial-Commercial-
Institutional Steam Generating Units. 
301.6 Subpart E—Standards of Performance for Incinerators. 
301.7 Subpart Ea—Standards of Performance for Municipal Waste Combustors for 
which Construction is Commenced after December 20, 1989 and on or before 
September 20, 1994. 
301.8 Subpart Eb—Standards of Performance for Large Municipal Waste Combustors for 
which Construction is Commenced after September 20, 1994 or for which 
Modification or Reconstruction is Commenced after June 19, 1996. 
301.9 Subpart Ec—Standards of Performance for Hospital/Medical/Infectious Waste 
Incinerators for which Construction is Commenced after June 20, 1996. 
301.10 Subpart F—(Reserved per A.R.S. § 49-402) 
301.11  Subpart G—Standards of Performance for Nitric Acid Plants. 
301.12 Subpart Ga—Standards of Performance for Nitric Acid Plants for Which 
Construction, Reconstruction, or Modification Commenced After October 14, 2011. 
301.13 Subpart H—Standards of Performance for Sulfuric Acid Plants. 
301.14 Subpart I—Standards of Performance for Hot Mix Asphalt Facilities. 
301.15 Subpart J—(Reserved per A.R.S. § 49-402) 
301.16 Subpart Ja—(Reserved per A.R.S. § 49-402) 
301.17 Subpart K—Standards of Performance for Storage Vessels for Petroleum Liquids 
for which Construction, Reconstruction, or Modification Commenced after June 11, 
1973, and prior to May 19, 1978. 
301.18 Subpart Ka—Standards of Performance for Storage Vessels for Petroleum Liquids 
for which Construction, Reconstruction, or Modification Commenced after May 18, 
1978, and prior to July 23, 1984. 
301.19 Subpart Kb—Standards of Performance for Volatile Organic Liquid Storage Vessels 
(Including Petroleum Liquid Storage Vessels) for which Construction, 
Reconstruction, or Modification Commenced after July 23, 1984. 
301.20 Subpart L—(Reserved per A.R.S. § 49-402) 
301.21 Subpart M—Standards of Performance for Secondary Brass and Bronze Production 
Plants. 
301.22 Subpart N—Standards of Performance for Primary Emissions from Basic Oxygen 
Process Furnaces for which Construction Commenced after June 11, 1973. 
10

301.23 Subpart Na—Standards of Performance for Secondary Emissions from Basic 
Oxygen Process Steelmaking Facilities for which Construction Commenced after 
January 20, 1983. 
301.24 Subpart O—Standards of Performance for Sewage Treatment Plants. 
301.25 Subpart P—(Reserved per A.R.S. § 49-402) 
301.26 Subpart Q—(Reserved per A.R.S. § 49-402) 
301.27 Subpart R—(Reserved per A.R.S. § 49-402) 
301.28 Subpart S—Standards of Performance for Primary Aluminum Reduction Plants. 
301.29 Subpart T—Standards of Performance for the Phosphate Fertilizer Industry: Wet-
Process Phosphoric Acid Plants. 
301.30 Subpart U—Standards of Performance for the Phosphate Fertilizer Industry: 
Superphosphoric Acid Plants. 
301.31 Subpart V—Standards of Performance for the Phosphate Fertilizer Industry: 
Diammonium Phosphate Plants. 
301.32 Subpart W—Standards of Performance for the Phosphate Fertilizer Industry: Triple 
Superphosphate Plants. 
301.33 Subpart X—Standards of Performance for the Phosphate Fertilizer Industry: 
Granular Triple Superphosphate Storage Facilities. 
301.34 Subpart Y—Standards of Performance for Coal Preparation and Processing Plants. 
301.35 Subpart Z—Standards of Performance for Ferroalloy Production Facilities. 
301.36 Subpart AA—Standards of Performance for Steel Plants: Electric Arc Furnaces 
Constructed after October 21, 1974, and on or before August 17, 1983. 
301.37 Subpart AAa—Standards of Performance for Steel Plants: Electric Arc Furnaces 
and Argon-Oxygen Decarburization Vessels Constructed after August 17, 1983. 
301.38 Subpart BB—Standards of Performance for Kraft Pulp Mills. 
301.39 Subpart BBa—Standards of Performance for Kraft Pulp Mill Affected Sources for 
Which Construction, Reconstruction, or Modification Commenced After May 23, 
2013. 
301.40 Subpart CC—Standards of Performance for Glass Manufacturing Plants. 
301.41 Subpart DD—Standards of Performance for Grain Elevators. 
301.42 Subpart EE—Standards of Performance for Surface Coating of Metal Furniture. 
301.43 Subpart FF—(Reserved) 
301.44 Subpart GG—Standards of Performance for Stationary Gas Turbines. 
301.45 Subpart HH—Standards of Performance for Lime Manufacturing Plants. 
301.46 Subpart II—(Reserved) 
301.47 Subpart JJ—(Reserved) 
11

301.48 Subpart KK—Standards of Performance for Lead-Acid Battery Manufacturing 
Plants. 
301.49 Subpart LL—Standards of Performance for Metallic Mineral Processing Plants. 
301.50 Subpart MM—Standards of Performance for Automobile and Light Duty Truck 
Surface Coating Operations. 
301.51 Subpart NN—Standards of Performance for Phosphate Rock Plants. 
301.52 Subpart OO—(Reserved) 
301.53 Subpart PP—Standards of Performance for Ammonium Sulfate Manufacture. 
301.54 Subpart QQ—Standards of Performance for the Graphic Arts Industry: Publication 
Rotogravure Printing. 
301.55 Subpart RR—Standards of Performance for Pressure Sensitive Tape and Label 
Surface Coating Operations. 
301.56 Subpart SS—Standards of Performance for Industrial Surface Coating: Large 
Appliances. 
301.57 Subpart TT—Standards of Performance for Metal Coil Surface Coating. 
301.58 Subpart UU—Standards of Performance for Asphalt Processing and Asphalt 
Roofing Manufacture. 
301.59 Subpart VV—Standards of Performance for Equipment Leaks of VOC in the 
Synthetic Organic Chemicals Manufacturing Industry for which Construction, 
Reconstruction, or Modification Commenced after January 5, 1981, and on or before 
November 7, 2006. 
301.60 Subpart VVa—Standards of Performance for Equipment Leaks of VOC in the 
Synthetic Organic Chemicals Manufacturing Industry for which Construction, 
Reconstruction, or Modification Commenced after November 7, 2006. 
301.61 Subpart WW—Standards of Performance for the Beverage Can Surface Coating 
Industry. 
301.62 Subpart XX—Standards of Performance for Bulk Gasoline Terminals. 
301.63 Subpart YY—(Reserved) 
301.64 Subpart ZZ—(Reserved) 
301.65 Subpart AAA—Standards of Performance for New Residential Wood Heaters. 
301.66 Subpart BBB—Standards of Performance for the Rubber Tire Manufacturing 
Industry. 
301.67 Subpart CCC—(Reserved) 
301.68 Subpart DDD—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from the Polymer Manufacturing Industry. 
301.69 Subpart EEE—(Reserved) 
301.70 Subpart FFF—Standards of Performance for Flexible Vinyl and Urethane Coating 
and Printing. 
12

301.71 Subpart GGG—(Reserved per A.R.S. § 49-402) 
301.72 Subpart GGGa—(Reserved per A.R.S. § 49-402) 
301.73 Subpart HHH—Standards of Performance for Synthetic Fiber Production 
Facilities. 
301.74 Subpart III—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from the Synthetic Organic Chemical Manufacturing Industry (SOCMI) 
Air Oxidation Unit Processes. 
301.75 Subpart JJJ—Standards of Performance for Petroleum Dry Cleaners. 
301.76 Subpart KKK—Standards of Performance for Equipment Leaks of VOC from 
Onshore Natural Gas Processing Plants. 
301.77 Subpart LLL—Standards of Performance for Onshore Natural Gas Processing: 
SO2 Emissions. 
301.78 Subpart MMM—(Reserved) 
301.79 Subpart NNN—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from Synthetic Organic Chemical Manufacturing Industry (SOCMI) 
Distillation Operations. 
301.80 Subpart OOO—Standards of Performance for Nonmetallic Mineral Processing 
Plants. 
301.81 Subpart PPP—Standard of Performance for Wool Fiberglass Insulation 
Manufacturing Plants. 
301.82 Subpart QQQ—(Reserved per A.R.S. § 49-402) 
301.83 Subpart RRR—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from Synthetic Organic Chemical Manufacturing Industry (SOCMI) 
Reactor Processes. 
301.84 Subpart SSS—Standards of Performance for Magnetic Tape Coating Facilities. 
301.85 Subpart TTT—Standards of Performance for Industrial Surface Coating: Surface 
Coating of Plastic Parts for Business Machines. 
301.86 Subpart UUU—Standards of Performance for Calciners and Dryers in Mineral 
Industries. 
301.87 Subpart VVV—Standards of Performance for Polymeric Coating of Supporting 
Substrates Facilities. 
301.88 Subpart WWW—Standards of Performance for Municipal Solid Waste Landfills. 
301.89 Subpart XXX—Standards of Performance for Municipal Solid Waste Landfills that 
Commenced Construction, Reconstruction, or Modification After July 17, 2014. 
301.90 Subpart YYY—(Reserved) 
301.91 Subpart ZZZ—(Reserved) 
13

301.92 Subpart AAAA—Standards of Performance for Small Municipal Waste Combustion 
Units for which Construction is Commenced after August 30, 1999 or for which 
Modification or Reconstruction is Commenced after June 6, 2001. 
301.93 Subpart CCCC—Standards of Performance for Commercial and Industrial Solid 
Waste Incineration Units for which Construction is Commenced after November 30, 
1999 or for which Modification or Reconstruction is Commenced on or after June 1, 
2001. 
301.94 Subpart EEEE—Standards of Performance for Other Solid Waste Incineration 
Units for which Construction is Commenced after December 9, 2004, or for which 
Modification or Reconstruction is Commenced on or after June 16, 2006. 
301.95 Subpart GGGG—(Reserved) 
301.96 Subpart HHHH—(Reserved) 
301.97 Subpart IIII—Standards of Performance for Stationary Compression Ignition 
Internal Combustion Engines. 
301.98 Subpart JJJJ—Standards of Performance for Stationary Spark Ignition Internal 
Combustion Engines. 
301.99 Subpart KKKK—Standards of Performance for Stationary Combustion Turbines. 
301.100 Subpart LLLL—Standards of Performance for New Sewage Sludge Incineration 
Units. 
301.101 Subpart NNNN—(Reserved) 
301.102 Subpart OOOO—Standards for Crude Oil and Natural Gas Production, 
Transmission and Distribution. 
301.103 Subpart OOOOa—Standards of Performance for Crude Oil and Natural Gas 
Facilities for Which Construction, Modification or Reconstruction Commenced 
After September 18, 2015. 
301.104 Subpart PPPP—(Reserved) 
301.105 Subpart QQQQ—Standards of Performance for New Residential Hydronic Heaters 
and Forced-Air Furnaces. 
301.106 Subpart RRRR—(Reserved) 
301.107 Subpart SSSS—(Reserved) 
301.108 Subpart TTTT—Standards of Performance for Greenhouse Gas Emissions for 
Electric Generating Units. 
302 
ADDITIONAL REQUIREMENTS: From the general standards identified in Section 
301 of this rule, delete 40 CFR 60.4, §60.5, and §60.6. All requests, reports, applications, 
submittals, and other communications to the Control Officer pursuant to this rule shall be 
submitted to the Maricopa County Air Quality Department. 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE) 
14

MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 360 
NEW SOURCE PERFORMANCE STANDARDS 
INDEX 
SECTION 100 – GENERAL 
101 
PURPOSE 
102 
APPLICABILITY 
103 
FEDERAL DELEGATION AUTHORITY 
SECTION 200 – DEFINITIONS 
201 
ADMINISTRATOR 
202 
AFFECTED FACILITY 
203 
COMMENCED 
204 
CONSTRUCTION 
205 
MODIFICATION 
206 
OWNER OR OPERATOR 
207 
STANDARD 
208 
STATIONARY SOURCE 
SECTION 300 – STANDARDS 
301 
ADOPTED FEDERAL STANDARDS 
302 
ADDITIONAL REQUIREMENTS 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE)
Draft Rule 360 - Clean Version
Return to list of attachments
15

Revised 07/13/1988; Revised 04/06/1992; Revised 11/20/1996; Revised 05/14/1997; Revised 
08/19/1998; Revised 04/07/1999; Revised 03/01/2000; Revised 03/07/2001; Revised 11/19/2003; 
Revised 03/15/2006; Revised 12/17/2008; Revised 09/16/2009; Revised 07/07/2010; Revised 
08/17/2011; Revised 07/25/2012; Revised 03/26/2014; Revised 11/05/2014; Revised 11/18/2015; 
Revised 11/02/2016; Revised 12/13/2017; Revised 11/07/2018; Revised 10/23/2019; Revised 
11/18/2020; and Revised 10/20/2021 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 360 
NEW SOURCE PERFORMANCE STANDARDS 
SECTION 100 – GENERAL 
101 
PURPOSE: To establish acceptable design and performance criteria for specified new or 
modified emission sources. 
102 
APPLICABILITY: The provisions of this rule apply to the owner or operator of any 
stationary source which contains an affected facility on which the construction, 
reconstruction, or a modification is commenced after the date of publication of any standard 
applicable to such facility in 40 CFR Part 60 and for which federal delegation of the 
implementation and enforcement of the standards to the Maricopa County Air Quality 
Department (MCAQD) has been accomplished. Any such stationary source must also 
comply with other Maricopa County Air Pollution Control Regulations. 
103 
FEDERAL DELEGATION AUTHORITY: The MCAQD shall enforce the federal new 
source performance standards (NSPS) (40 CFR Part 60) listed in Section 300 of this rule 
which have been delegated to the County by the United States Environmental Protection 
Agency (EPA) for such enforcement. The MCAQD may, in addition, enforce such other 
NSPS as delegated for such enforcement by the EPA to the MCAQD. 
SECTION 200 – DEFINITIONS: For the purpose of this rule, the following definitions shall 
apply, in addition to those definitions found in Rule 100 (General Provisions and Definitions) of 
these rules. In the event of any inconsistency between any of the Maricopa County air pollution 
control rules, the definitions in this rule take precedence. 
201 
ADMINISTRATOR: As used in Part 60, Title 40, Code of Federal Regulations, shall mean 
the Control Officer, except that the Control Officer shall not be empowered to approve 
alternate or equivalent test methods or alternative standards/work practices, or other 
nondelegable authorities such as those listed in 40 CFR 60.4(d), except as specifically 
provided in each subpart. 
202 
AFFECTED FACILITY: With reference to a stationary source, any apparatus to which a 
standard is applicable. 
203 
COMMENCED: With respect to the definition of "new source" in Section 111(a)(2) of the 
Act, that an owner or operator has undertaken a continuous program of construction, 
16

reconstruction, or modification or that an owner or operator has entered into a contracted 
obligation to undertake and complete, within a reasonable time, a continuous program of 
construction, reconstruction or modification. 
204 
CONSTRUCTION: The fabrication, erection, or installation of an affected facility. 
205 
MODIFICATION: Any physical change in, or change in the method of operation of, an 
existing facility which increases the amount of any contaminant (to which a standard applies) 
emitted into the atmosphere by that facility or which results in the emission of any air 
contaminant (to which a standard applies) into the atmosphere not previously emitted. 
206 
OWNER OR OPERATOR: Any person who owns, leases, operates, controls, or 
supervises an affected facility or a stationary source of which an affected facility is a part. 
207 
STANDARD: A standard of performance promulgated under this rule. 
208 
STATIONARY SOURCE: Any building, structure, facility, or installation which emits or 
may emit any air pollutant. 
SECTION 300 – STANDARDS 
301 
ADOPTED FEDERAL STANDARDS: The following federal regulations located in the 
U.S. Code of Federal Regulations, Part 60 of Title 40, Subchapter C (CFR) as codified on 
July 1, 2021, are herein incorporated by reference in Maricopa County’s Air Pollution 
Control Regulations. This incorporation by reference includes no future editions or 
amendments. Each owner or operator subject to the requirements of the following subparts 
shall comply with the requirements of those subparts and the additional requirements set 
forth herein. Incorporation by reference does not include nondelegable functions of the 
EPA Administrator. 
301.1 Subpart A—General Provisions; exclude any sections dealing with equivalency 
determinations or innovative technology waivers, as covered in Sections 111(h)(3) 
and 111(j) respectively of the Clean Air Act. 
301.2 Subpart D—Standards of Performance for Fossil-Fuel-Fired Steam Generators for 
which Construction is Commenced after August 17, 1971. 
301.3 Subpart Da—Standards of Performance for Electric Utility Steam Generating Units 
for which Construction is Commenced after September 18, 1978. 
301.4 Subpart Db—Standards of Performance for Industrial-Commercial-Institutional 
Steam Generating Units. 
301.5 Subpart Dc—Standards of Performance for Small Industrial-Commercial-
Institutional Steam Generating Units. 
301.6 Subpart E—Standards of Performance for Incinerators. 
301.7 Subpart Ea—Standards of Performance for Municipal Waste Combustors for 
which Construction is Commenced after December 20, 1989 and on or before 
September 20, 1994. 
17

301.8 Subpart Eb—Standards of Performance for Large Municipal Waste Combustors for 
which Construction is Commenced after September 20, 1994 or for which 
Modification or Reconstruction is Commenced after June 19, 1996. 
301.9 Subpart Ec—Standards of Performance for Hospital/Medical/Infectious Waste 
Incinerators for which Construction is Commenced after June 20, 1996. 
301.10 Subpart F—(Reserved per A.R.S. § 49-402) 
301.11  Subpart G—Standards of Performance for Nitric Acid Plants. 
301.12 Subpart Ga—Standards of Performance for Nitric Acid Plants for Which 
Construction, Reconstruction, or Modification Commenced After October 14, 2011. 
301.13 Subpart H—Standards of Performance for Sulfuric Acid Plants. 
301.14 Subpart I—Standards of Performance for Hot Mix Asphalt Facilities. 
301.15 Subpart J—(Reserved per A.R.S. § 49-402) 
301.16 Subpart Ja—(Reserved per A.R.S. § 49-402) 
301.17 Subpart K—Standards of Performance for Storage Vessels for Petroleum Liquids 
for which Construction, Reconstruction, or Modification Commenced after June 11, 
1973, and prior to May 19, 1978. 
301.18 Subpart Ka—Standards of Performance for Storage Vessels for Petroleum Liquids 
for which Construction, Reconstruction, or Modification Commenced after May 18, 
1978, and prior to July 23, 1984. 
301.19 Subpart Kb—Standards of Performance for Volatile Organic Liquid Storage Vessels 
(Including Petroleum Liquid Storage Vessels) for which Construction, 
Reconstruction, or Modification Commenced after July 23, 1984. 
301.20 Subpart L—(Reserved per A.R.S. § 49-402) 
301.21 Subpart M—Standards of Performance for Secondary Brass and Bronze Production 
Plants. 
301.22 Subpart N—Standards of Performance for Primary Emissions from Basic Oxygen 
Process Furnaces for which Construction Commenced after June 11, 1973. 
301.23 Subpart Na—Standards of Performance for Secondary Emissions from Basic 
Oxygen Process Steelmaking Facilities for which Construction Commenced after 
January 20, 1983. 
301.24 Subpart O—Standards of Performance for Sewage Treatment Plants. 
301.25 Subpart P—(Reserved per A.R.S. § 49-402) 
301.26 Subpart Q—(Reserved per A.R.S. § 49-402) 
301.27 Subpart R—(Reserved per A.R.S. § 49-402) 
301.28 Subpart S—Standards of Performance for Primary Aluminum Reduction Plants. 
301.29 Subpart T—Standards of Performance for the Phosphate Fertilizer Industry: Wet-
Process Phosphoric Acid Plants. 
18

301.30 Subpart U—Standards of Performance for the Phosphate Fertilizer Industry: 
Superphosphoric Acid Plants. 
301.31 Subpart V—Standards of Performance for the Phosphate Fertilizer Industry: 
Diammonium Phosphate Plants. 
301.32 Subpart W—Standards of Performance for the Phosphate Fertilizer Industry: Triple 
Superphosphate Plants. 
301.33 Subpart X—Standards of Performance for the Phosphate Fertilizer Industry: 
Granular Triple Superphosphate Storage Facilities. 
301.34 Subpart Y—Standards of Performance for Coal Preparation and Processing Plants. 
301.35 Subpart Z—Standards of Performance for Ferroalloy Production Facilities. 
301.36 Subpart AA—Standards of Performance for Steel Plants: Electric Arc Furnaces 
Constructed after October 21, 1974, and on or before August 17, 1983. 
301.37 Subpart AAa—Standards of Performance for Steel Plants: Electric Arc Furnaces 
and Argon-Oxygen Decarburization Vessels Constructed after August 17, 1983. 
301.38 Subpart BB—Standards of Performance for Kraft Pulp Mills. 
301.39 Subpart BBa—Standards of Performance for Kraft Pulp Mill Affected Sources for 
Which Construction, Reconstruction, or Modification Commenced After May 23, 
2013. 
301.40 Subpart CC—Standards of Performance for Glass Manufacturing Plants. 
301.41 Subpart DD—Standards of Performance for Grain Elevators. 
301.42 Subpart EE—Standards of Performance for Surface Coating of Metal Furniture. 
301.43 Subpart FF—(Reserved) 
301.44 Subpart GG—Standards of Performance for Stationary Gas Turbines. 
301.45 Subpart HH—Standards of Performance for Lime Manufacturing Plants. 
301.46 Subpart II—(Reserved) 
301.47 Subpart JJ—(Reserved) 
301.48 Subpart KK—Standards of Performance for Lead-Acid Battery Manufacturing 
Plants. 
301.49 Subpart LL—Standards of Performance for Metallic Mineral Processing Plants. 
301.50 Subpart MM—Standards of Performance for Automobile and Light Duty Truck 
Surface Coating Operations. 
301.51 Subpart NN—Standards of Performance for Phosphate Rock Plants. 
301.52 Subpart OO—(Reserved) 
301.53 Subpart PP—Standards of Performance for Ammonium Sulfate Manufacture. 
301.54 Subpart QQ—Standards of Performance for the Graphic Arts Industry: Publication 
Rotogravure Printing. 
19

301.55 Subpart RR—Standards of Performance for Pressure Sensitive Tape and Label 
Surface Coating Operations. 
301.56 Subpart SS—Standards of Performance for Industrial Surface Coating: Large 
Appliances. 
301.57 Subpart TT—Standards of Performance for Metal Coil Surface Coating. 
301.58 Subpart UU—Standards of Performance for Asphalt Processing and Asphalt 
Roofing Manufacture. 
301.59 Subpart VV—Standards of Performance for Equipment Leaks of VOC in the 
Synthetic Organic Chemicals Manufacturing Industry for which Construction, 
Reconstruction, or Modification Commenced after January 5, 1981, and on or before 
November 7, 2006. 
301.60 Subpart VVa—Standards of Performance for Equipment Leaks of VOC in the 
Synthetic Organic Chemicals Manufacturing Industry for which Construction, 
Reconstruction, or Modification Commenced after November 7, 2006. 
301.61 Subpart WW—Standards of Performance for the Beverage Can Surface Coating 
Industry. 
301.62 Subpart XX—Standards of Performance for Bulk Gasoline Terminals. 
301.63 Subpart YY—(Reserved) 
301.64 Subpart ZZ—(Reserved) 
301.65 Subpart AAA—Standards of Performance for New Residential Wood Heaters. 
301.66 Subpart BBB—Standards of Performance for the Rubber Tire Manufacturing 
Industry. 
301.67 Subpart CCC—(Reserved) 
301.68 Subpart DDD—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from the Polymer Manufacturing Industry. 
301.69 Subpart EEE—(Reserved) 
301.70 Subpart FFF—Standards of Performance for Flexible Vinyl and Urethane Coating 
and Printing. 
301.71 Subpart GGG—(Reserved per A.R.S. § 49-402) 
301.72 Subpart GGGa—(Reserved per A.R.S. § 49-402) 
301.73 Subpart HHH—Standards of Performance for Synthetic Fiber Production 
Facilities. 
301.74 Subpart III—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from the Synthetic Organic Chemical Manufacturing Industry (SOCMI) 
Air Oxidation Unit Processes. 
301.75 Subpart JJJ—Standards of Performance for Petroleum Dry Cleaners. 
301.76 Subpart KKK—Standards of Performance for Equipment Leaks of VOC from 
Onshore Natural Gas Processing Plants. 
20

301.77 Subpart LLL—Standards of Performance for Onshore Natural Gas Processing: 
SO2 Emissions. 
301.78 Subpart MMM—(Reserved) 
301.79 Subpart NNN—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from Synthetic Organic Chemical Manufacturing Industry (SOCMI) 
Distillation Operations. 
301.80 Subpart OOO—Standards of Performance for Nonmetallic Mineral Processing 
Plants. 
301.81 Subpart PPP—Standard of Performance for Wool Fiberglass Insulation 
Manufacturing Plants. 
301.82 Subpart QQQ—(Reserved per A.R.S. § 49-402) 
301.83 Subpart RRR—Standards of Performance for Volatile Organic Compound (VOC) 
Emissions from Synthetic Organic Chemical Manufacturing Industry (SOCMI) 
Reactor Processes. 
301.84 Subpart SSS—Standards of Performance for Magnetic Tape Coating Facilities. 
301.85 Subpart TTT—Standards of Performance for Industrial Surface Coating: Surface 
Coating of Plastic Parts for Business Machines. 
301.86 Subpart UUU—Standards of Performance for Calciners and Dryers in Mineral 
Industries. 
301.87 Subpart VVV—Standards of Performance for Polymeric Coating of Supporting 
Substrates Facilities. 
301.88 Subpart WWW—Standards of Performance for Municipal Solid Waste Landfills. 
301.89 Subpart XXX—Standards of Performance for Municipal Solid Waste Landfills that 
Commenced Construction, Reconstruction, or Modification After July 17, 2014. 
301.90 Subpart YYY—(Reserved) 
301.91 Subpart ZZZ—(Reserved) 
301.92 Subpart AAAA—Standards of Performance for Small Municipal Waste Combustion 
Units for which Construction is Commenced after August 30, 1999 or for which 
Modification or Reconstruction is Commenced after June 6, 2001. 
301.93 Subpart CCCC—Standards of Performance for Commercial and Industrial Solid 
Waste Incineration Units for which Construction is Commenced after November 30, 
1999 or for which Modification or Reconstruction is Commenced on or after June 1, 
2001. 
301.94 Subpart EEEE—Standards of Performance for Other Solid Waste Incineration 
Units for which Construction is Commenced after December 9, 2004, or for which 
Modification or Reconstruction is Commenced on or after June 16, 2006. 
301.95 Subpart GGGG—(Reserved) 
301.96 Subpart HHHH—(Reserved) 
21

301.97 Subpart IIII—Standards of Performance for Stationary Compression Ignition 
Internal Combustion Engines. 
301.98 Subpart JJJJ—Standards of Performance for Stationary Spark Ignition Internal 
Combustion Engines. 
301.99 Subpart KKKK—Standards of Performance for Stationary Combustion Turbines. 
301.100 Subpart LLLL—Standards of Performance for New Sewage Sludge Incineration 
Units. 
301.101 Subpart NNNN—(Reserved) 
301.102 Subpart OOOO—Standards for Crude Oil and Natural Gas Production, 
Transmission and Distribution. 
301.103 Subpart OOOOa—Standards of Performance for Crude Oil and Natural Gas 
Facilities for Which Construction, Modification or Reconstruction Commenced 
After September 18, 2015. 
301.104 Subpart PPPP—(Reserved) 
301.105 Subpart QQQQ—Standards of Performance for New Residential Hydronic Heaters 
and Forced-Air Furnaces. 
301.106 Subpart RRRR—(Reserved) 
301.107 Subpart SSSS—(Reserved) 
301.108 Subpart TTTT—Standards of Performance for Greenhouse Gas Emissions for 
Electric Generating Units. 
302 
ADDITIONAL REQUIREMENTS: From the general standards identified in Section 
301 of this rule, delete 40 CFR 60.4, §60.5, and §60.6. All requests, reports, applications, 
submittals, and other communications to the Control Officer pursuant to this rule shall be 
submitted to the Maricopa County Air Quality Department. 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE) 
22

MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 370 
FEDERAL HAZARDOUS AIR POLLUTANT PROGRAM 
INDEX 
SECTION 100 – GENERAL 
101 
PURPOSE 
102 
APPLICABILITY 
103 
AVAILABILITY OF INFORMATION 
104 
103 
FEDERAL DELEGATION AUTHORITY 
SECTION 200 – DEFINITIONS 
201 
ADMINISTRATOR 
202 
AMENDED WATER 
203 
EXISTING SOURCE 
204 
FEDERALLY LISTED HAZARDOUS AIR POLLUTANT 
205 
GOVERNMENT-ISSUED PHOTO IDENTIFICATION CARD 
206 
HAZARDOUS AIR POLLUTANT 
207 
MAJOR SOURCE 
208 
MODIFICATION 
209 
NESHAP 
210 
NEW SOURCE 
211 
STATIONARY SOURCE 
SECTION 300 – STANDARDS 
301 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED 
HAZARDOUS AIR POLLUTANTS 
302 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED 
HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES 
303 
ADDITIONAL REQUIREMENTS 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS 
401 
CONTROL TECHNOLOGY DETERMINATIONS FOR MAJOR SOURCES IN 
ACCORDANCE WITH CLEAN AIR ACT SECTIONS, SECTIONS 112(g) AND 
112(j) 
Draft Rule 370 - Strikethrough and Underline Version
Return to list of attachments
23

402 
COMPLIANCE EXTENSIONS FOR EARLY REDUCTION OF FEDERALLY 
LISTED HAZARDOUS AIR POLLUTANTS 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE)
24

Revised 07/13/1988; Revised 04/06/1992; Repealed and Adopted 11/15/1993; Revised 
11/20/1996; Revised 05/14/1997; Revised 05/20/1998; Revised 08/19/1998; Revised 03/01/2000; 
Revised 03/07/2001; Revised 11/19/2003; Revised 03/15/2006; Revised 12/17/2008; Revised 
09/16/2009; Revised 07/07/2010; Revised 08/17/2011; Revised 07/25/2012; Revised 03/26/2014; 
Revised 11/05/2014; Revised 11/18/2015; Revised 11/02/2016; Revised 12/13/2017; Revised 
11/07/2018; Revised 10/23/2019; and Revised 11/18/2020; and Revised MM/DD/YYYY 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 370 
FEDERAL HAZARDOUS AIR POLLUTANT PROGRAM 
SECTION 100 – GENERAL 
101 
PURPOSE: To establish emission standards for federally listed hazardous air pollutants. 
102 
APPLICABILITY: The provisions of this rule apply to the owner or operator of any 
stationary source for which a standard is prescribed under this rule, and for which federal 
delegation of the implementation and enforcement of the standards to the Maricopa County 
Air Quality Department (MCAQD) has been accomplished. Any such stationary source 
must also comply with other Maricopa County Air Pollution Control Regulations. 
103 
AVAILABILITY OF INFORMATION: Copies of all 40 CFR, Part 61 and Part 63 revisions 
currently enforced by the MCAQD are available as listed: 
a.
Maricopa County Air Quality Department.
b. Maricopa County Rules are available electronically at
https://www.maricopa.gov/1951/Adopted-Rules 
c.
EPA documents are available electronically at https://www.ecfr.gov/cgi-bin/text-
idx?SID=3e92ce0bdd77277b5f6e386319a9b84e&mc=true&tpl=/ecfrbrowse/Title40/4
0tab_02.tpl 
d. ASTM standards are available from ASTM International, 100 Barr Harbor Drive, P.O.
Box C700, West Conshohocken, PA 19428, or from its website at www.astm.org 
104 
103 
FEDERAL DELEGATION AUTHORITY: The MCAQD shall enforce the national 
emission standards for hazardous air pollutants (NESHAPs) (40 CFR 61 and 40 CFR 63) 
listed in Section 300 of this rule which have been delegated to the County by the United 
States Environmental Protection Agency (EPA) for such enforcement. The MCAQD in 
addition, may enforce such other NESHAPs as delegated for such enforcement by the EPA 
to the County. 
SECTION 200 – DEFINITIONS: For the purpose of this rule, the following definitions shall 
apply, in addition to those definitions found in Rule 100 (General Provisions and Definitions) of 
these rules. In the event of any inconsistency between any of the Maricopa County air pollution 
control rules, the definitions in this rule take precedence. 
25

201 
ADMINISTRATOR: As used in Parts 61 and 63, Title 40, Code of Federal Regulations, 
shall mean the Control Officer, except that the Control Officer shall not be empowered to 
approve alternate or equivalent test methods, alternative standards/work practices, or other 
nondelegable authorities, except as specifically provided in each subpart. 
202 
AMENDED WATER: Water to which surfactant (wetting agent) has been added to 
increase the ability of the liquid to penetrate asbestos-containing material (ACM). 
203 
EXISTING SOURCE: Any stationary source other than a new source. 
204 
FEDERALLY LISTED HAZARDOUS AIR POLLUTANT: Any air pollutant listed 
pursuant to Section 112(b) of the Act. 
205 
GOVERNMENT-ISSUED PHOTO IDENTIFICATION CARD: Includes, but is not 
limited to, a valid driver's license, a valid non-operating identification license, a valid tribal 
enrollment card or tribal identification card, or other valid government issued photo 
identification that includes the name, address, and photograph of the card holder. 
206 
HAZARDOUS AIR POLLUTANT: Any air pollutant regulated under Section 112 of the 
Act, any air pollutant subject to NESHAP, or any air pollutant designated by the Director as 
a hazardous air pollutant pursuant to A.R.S. § 49-426.04. 
207 
MAJOR SOURCE: A stationary source or group of stationary sources located within a 
contiguous area, and under common control, and that emits or has the potential to emit 
considering controls, in the aggregate, 10 tons per year or more of any federally listed 
hazardous air pollutant or 25 tons per year or more of any combination of federally listed 
hazardous air pollutants. A lesser quantity or, in the case of radionuclides, a different criteria 
may be established by the Administrator pursuant to Section 112 of the Act and may be 
adopted by the Board of Supervisors by rule. 
208 
MODIFICATION: Any physical change in, or change in the method of operation of a 
major source which increases the actual emissions of any federally listed hazardous air 
pollutant emitted by such source by more than a de minimis amount, or which results in the 
emission of any federally listed hazardous air pollutant, not previously emitted by more than 
a de minimis amount. 
209 
NESHAP: National emission standards for hazardous air pollutants pursuant to 40 CFR 
Part 61 and Part 63. 
210 
NEW SOURCE: A stationary source, the construction or reconstruction of which 
commences after the Administrator first proposes regulations under Section 112 of the Act 
establishing an emission standard applicable to such source. 
211 
STATIONARY SOURCE: Any building, structure, facility, or installation which emits or 
may emit any air pollutant. 
SECTION 300 – STANDARDS 
26

301 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED HAZARDOUS 
AIR POLLUTANTS: The federally listed hazardous air pollutants as listed in TABLE 370-
1. FEDERAL LIST OF HAZARDOUS AIR POLLUTANTS of this rule and the following
federal regulations located in the U.S. Code of Federal Regulations, Part 61 of Title 40, 
Subchapter C (CFR) as codified on July 1, 2020 2021, are herein incorporated by reference 
with the listed exclusions, in Maricopa County’s Air Pollution Control Regulations. This 
incorporation by reference includes no future editions or amendments. Each owner or 
operator subject to the requirements of the following subparts shall comply with the 
requirements of those subparts and the additional requirements set forth herein. Incorpo-
ration by reference does not include nondelegable functions of the EPA Administrator. 
301.1 Subpart A—General Provisions; exclude any sections dealing with equivalency 
determinations that are nontransferable through Section 112(e)(3) of the Act. 
301.2 Subpart C—National Emission Standard for Beryllium. 
301.3 Subpart D—National Emission Standard for Beryllium Rocket Motor Firing. 
301.4 Subpart E—National Emission Standard for Mercury. 
301.5 Subpart F—National Emission Standard for Vinyl Chloride. 
301.6 Subpart G—(Reserved) 
301.7 Subpart J—National Emission Standard for Equipment Leaks (Fugitive Emission 
Sources) of Benzene. 
301.8 Subpart L—National Emission Standard for Benzene Emissions from Coke By-
Product Recovery Plants. 
301.9 Subpart M—National Emission Standard for Asbestos. 
a. Each owner or operator of a demolition activity or renovation activity involving
a facility as defined in 40 CFR 61, Subpart M shall:
(1) Fully comply with all requirements of 40 CFR 61, Subpart M.
(2) Thoroughly inspect the facility within 12 months of commencement of
demolition or renovation activity for the presence of asbestos, including 
Category I and Category II nonfriable ACM. Include the date of this 
inspection on the written notification. 
(3) Provide the Control Officer with written notification of intention to 
demolish or to renovate in the manner described in 40 CFR 61.145. 
(4) Update all notifications in accordance with 40 CFR 61.145(b). For 
renovations described in 40 CFR 61.145(a)(4)(iii), notifications shall expire 
every December 31, with new notices required at least 10 working days 
before the end of the calendar year preceding the year for which notice is 
being given. All other notifications shall expire one year from either the 
original postmark date or commercial delivery date or date of hand delivery 
to the Control Officer. For a demolition activity or renovation activity that 
continues beyond the expiration date, the owner or operator of the 
demolition or renovation activity shall notify the Control Officer in 
accordance with 40 CFR 61.145(b) at least 10 working days prior to the 
27

expiration of the original notice and pay all applicable fees prescribed by Rule 
280 of these rules. 
(5) Pay all applicable fees prescribed by Rule 280 of these rules. 
b. In addition, each owner or operator of a demolition activity or renovation
activity shall comply with the following requirements:
(1) Certification, training, and record keeping requirements:
(a) All facilities scheduled for demolition or renovation shall be inspected by 
a currently certified Asbestos Hazard Emergency Response Act 
(AHERA) accredited asbestos building inspector (herein referenced as 
inspector), as required by either AHERA or the Asbestos School Hazard 
Abatement Reauthorization Act (ASHARA). 
(b) Each owner and operator of a facility shall maintain a copy of any reports 
of inspections made for a facility for two years from completion of 
project, including laboratory test results of samples collected. A copy of 
the inspection reports and laboratory test results shall be on-site and 
available for inspection at the facility, upon request of the MCAQD, 
during all demolition and renovation (asbestos setup, removal, handling, 
collecting, containerizing, cleanup and dismantling) activities. 
(c) All asbestos workers shall maintain current AHERA worker certification. 
All asbestos contractor/supervisors shall maintain current 
AHERA/ASHARA contractor/supervisor certification and shall be on-
site at all times during any active asbestos abatement work at or above 
NESHAP threshold amounts. A legible copy of all asbestos workers and 
contractor/supervisor's current training certificates from an EPA 
accredited training provider shall be available for inspection at all times at 
the demolition or renovation site. 
(d) All asbestos workers and contractor/supervisors shall have color photo 
identification on-site and available for inspection, upon request of the 
MCAQD, at all times during asbestos setup, removal, handling, 
collecting, containerizing, cleanup and dismantling. The color photo 
identification shall be from an EPA accredited training provider verifying 
the certification requirements in section (b)(1)(c), or a current 
government-issued photo identification card. 
(2) Asbestos renovation and demolition standards: 
(a) A facility owner or operator shall not create visible dust emissions when 
removing or transporting to the disposal site Category I nonfriable 
asbestos-containing material (ACM) and Category II nonfriable ACM 
that remain nonfriable Category I ACM and nonfriable Category II 
ACM. 
(b) Inspection viewing devices at facilities are required at all asbestos 
renovation projects where regulated asbestos-containing material 
(RACM) is being abated, except for roofing projects involving Category I 
nonfriable ACM and Category II nonfriable ACM exclusively. Viewing 
28

devices shall be so designed as to allow an inspector to view the facility 
from the outside, either through ports or by video monitoring. 
(c) All exposed RACM subject to cutting or dismantling operations and all 
RACM being removed from a facility or a facility component shall be 
kept adequately wet by using amended water to control the release of 
asbestos fibers. The use of amended water will not be required in the 
case of an ordered demolition, as defined in 40 CFR 61.145(a)(3), where 
the debris is suspected to contain or is known to contain ACM, however 
ordered demolitions are subject to 40 CFR 61.145(c)(9). Specific 
exemptions are listed under 40 CFR 61.145(c)(3)(i)(A), 40 CFR 
61.145(c)(3)(ii) and/or 40 CFR 61.145(c)(7)(i). To claim these 
exemptions, the owner or operator shall follow the requirements of 40 
CFR 61.145(c)(3)(i)(B), 40 CFR 61.145(c)(3)(iii) and/or 61.145(c)(7)(ii) 
and (iii). 
(d) All RACM shall be contained in transparent, leak-tight wrapping and 
shall remain adequately wet to prevent dust emissions during removal, 
transport, storage, and proper landfill disposal following local, county, 
state, and federal regulations. Affix a visible and legible label to each 
individual wrapping with the name of the site owner or operator and the 
name and address of the location that generated the RACM. 
301.10 Subpart N—National Emission Standard for Inorganic Arsenic Emissions from 
Glass Manufacturing Plants. 
301.11 Subpart O—(Reserved per A.R.S. § 49-402) 
301.12 Subpart P—National Emission Standard for Inorganic Arsenic Emissions from 
Arsenic Trioxide and Metallic Arsenic Production Facilities. 
301.13 Subpart S—(Reserved) 
301.14 Subpart U—(Reserved) 
301.15 Subpart V—National Emission Standard for Equipment Leaks (Fugitive Emission 
Sources). 
301.16 Subpart X—(Reserved) 
301.17 Subpart Y—National Emission Standard for Benzene Emissions from Benzene 
Storage Vessels. 
301.18 Subpart Z—(Reserved) 
301.19 Subpart AA—(Reserved) 
301.20 Subpart BB—National Emission Standard for Benzene Emissions from Benzene 
Transfer Operations. 
301.21 Subpart CC—(Reserved) 
301.22 Subpart DD—(Reserved) 
301.23 Subpart EE—(Reserved) 
301.24 Subpart FF—National Emission Standard for Benzene Waste Operations. 
29

302 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED HAZARDOUS 
AIR POLLUTANTS FOR SOURCE CATEGORIES: The federally listed hazardous air 
pollutants as listed in TABLE 370-1. FEDERAL LIST OF HAZARDOUS AIR 
POLLUTANTS of this rule and the following federal regulations located in the U.S. Code of 
Federal Regulations, Part 63 of Title 40, Subchapter C (CFR), as codified on July 1, 2020 
2021, are herein incorporated by reference with the listed exclusions, in Maricopa County’s 
Air Pollution Control Regulations. This incorporation by reference includes no future 
editions or amendments. Each owner or operator subject to the requirements of the 
following subparts shall comply with the requirements of those subparts and the additional 
requirements set forth herein. Incorporation by reference does not include nondelegable 
functions of the EPA Administrator. 
302.1 Subpart A—General Provisions. 
302.2 Subpart F—National Emission Standards for Organic Hazardous Air Pollutants 
from the Synthetic Organic Chemical Manufacturing Industry. 
302.3 Subpart G—National Emission Standards for Organic Hazardous Air Pollutants 
from the Synthetic Organic Chemical Manufacturing Industry for Process Vents, 
Storage Vessels, Transfer Operations, and Wastewater. 
302.4 Subpart H—National Emission Standards for Organic Hazardous Air Pollutants for 
Equipment Leaks. 
302.5 Subpart I—National Emission Standards for Organic Hazardous Air Pollutants for 
Certain Processes Subject to the Negotiated Regulation for Equipment Leaks. 
302.6 Subpart J—National Emission Standards for Hazardous Air Pollutants for Polyvinyl 
Chloride and Copolymers Production. 
302.7 Subpart K—(Reserved) 
302.8 Subpart L—National Emission Standards for Coke Oven Batteries. 
302.9 Subpart M—National Perchloroethylene Air Emission Standards for Dry Cleaning 
Facilities. 
302.10 Subpart N—National Emission Standards for Chromium Emissions from Hard and 
Decorative Chromium Electroplating and Chromium Anodizing Tanks. 
302.11 Subpart O—Ethylene Oxide Emissions Standards for Sterilization Facilities. 
302.12 Subpart P—(Reserved) 
302.13 Subpart Q—National Emission Standards for Hazardous Air Pollutants for 
Industrial Process Cooling Towers. 
302.14 Subpart R—National Emission Standards for Gasoline Distribution Facilities (Bulk 
Gasoline Terminals and Pipeline Breakout Stations). 
302.15 Subpart S—National Emission Standards for Hazardous Air Pollutants from the 
Pulp and Paper Industry. 
302.16 Subpart T—National Emission Standards for Halogenated Solvent Cleaning. 
302.17 Subpart U—National Emission Standards for Hazardous Air Pollutant Emissions: 
Group I Polymers and Resins. 
30

302.18 Subpart V—(Reserved) 
302.19 Subpart W—National Emission Standards for Hazardous Air Pollutants for Epoxy 
Resins Production and Non-Nylon Polyamides Production. 
302.20 Subpart X—(Reserved per A.R.S. § 49-402) 
302.21 Subpart Z—(Reserved) 
302.22 Subpart AA—National Emission Standards for Hazardous Air Pollutants from 
Phosphoric Acid Manufacturing Plants. 
302.23 Subpart BB—National Emission Standards for Hazardous Air Pollutants from 
Phosphate Fertilizers Production Plants. 
302.24 Subpart CC—(Reserved per A.R.S. § 49-402) 
302.25 Subpart DD—National Emission Standards for Hazardous Air Pollutants from 
Off-Site Waste and Recovery Operations. 
302.26 Subpart EE—National Emission Standards for Magnetic Tape Manufacturing 
Operations. 
302.27 Subpart FF—(Reserved) 
302.28 Subpart GG—National Emission Standards for Aerospace Manufacturing and 
Rework Facilities. 
302.29 Subpart HH—National Emission Standards for Hazardous Air Pollutants from Oil 
and Natural Gas Production Facilities. 
302.30 Subpart JJ—National Emission Standards for Wood Furniture Manufacturing 
Operations. 
302.31 Subpart KK—National Emission Standards for the Printing and Publishing 
Industry. 
302.32 Subpart LL—National Emission Standards for Hazardous Air Pollutants for 
Primary Aluminum Reduction Plants. 
302.33 Subpart MM—National Emission Standards for Hazardous Air Pollutants for 
Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and Stand-Alone 
Semichemical Pulp Mills. 
302.34 Subpart NN—National Emission Standards for Hazardous Air Pollutants for Wool 
Fiberglass Manufacturing at Area Sources. 
302.35 Subpart OO—National Emission Standards for Tanks – Level 1. 
302.36 Subpart PP—National Emission Standards for Containers. 
302.37 Subpart QQ—National Emission Standards for Surface Impoundments. 
302.38 Subpart RR—National Emission Standards for Individual Drain Systems. 
302.39 Subpart SS—National Emission Standards for Closed Vent Systems, Control 
Devices, Recovery Devices and Routing to a Fuel Gas System or a Process. 
302.40 Subpart TT—National Emission Standards for Equipment Leaks – Control Level 1. 
31

302.41 Subpart UU—National Emission Standards for Equipment Leaks – Control Level 2 
Standards. 
302.42 Subpart VV—National Emission Standards for Oil-Water Separators and Organic-
Water Separators. 
302.43 Subpart WW—National Emission Standards for Storage Vessels (Tanks) – Control 
Level 2. 
302.44 Subpart XX—National Emission Standards for Ethylene Manufacturing Process 
Units: Heat Exchange Systems and Waste Operations. 
302.45 Subpart YY—National Emission Standards for Hazardous Air Pollutants for Source 
Categories: Generic Maximum Achievable Control Technology Standards. 
302.46 Subpart ZZ—(Reserved) 
302.47 Subpart AAA—(Reserved) 
302.48 Subpart BBB—(Reserved) 
302.49 Subpart CCC—National Emission Standards for Hazardous Air Pollutants for Steel 
Pickling – HCl Process Facilities and Hydrochloric Acid Regeneration Plants. 
302.50 Subpart DDD—National Emission Standards for Hazardous Air Pollutants for 
Mineral Wool Production. 
302.51 Subpart EEE—National Emission Standards for Hazardous Air Pollutants from 
Hazardous Waste Combustors. 
302.52 Subpart FFF—(Reserved) 
302.53 Subpart GGG—National Emission Standards for Pharmaceuticals Production. 
302.54 Subpart HHH—National Emission Standards for Hazardous Air Pollutants from 
Natural Gas Transmission and Storage Facilities. 
302.55 Subpart III—National Emission Standards for Hazardous Air Pollutants for 
Flexible Polyurethane Foam Production. 
302.56 Subpart JJJ—National Emission Standards for Hazardous Air Pollutant Emissions: 
Group IV Polymers and Resins. 
302.57 Subpart KKK—(Reserved) 
302.58 Subpart LLL—(Reserved per A.R.S. § 49-402) 
302.59 Subpart MMM—National Emission Standards for Hazardous Air Pollutants for 
Pesticide Active Ingredient Production. 
302.60 Subpart NNN—National Emission Standards for Hazardous Air Pollutants for 
Wool Fiberglass Manufacturing. 
302.61 Subpart OOO—National Emission Standards for Hazardous Air Pollutant 
Emissions: Manufacture of Amino/Phenolic Resins. 
302.62 Subpart PPP—National Emission Standards for Hazardous Air Pollutant 
Emissions for Polyether Polyols Production. 
302.63 Subpart QQQ—(Reserved per A.R.S. § 49-402) 
32

302.64 Subpart RRR—National Emission Standards for Hazardous Air Pollutants for 
Secondary Aluminum Production. 
302.65 Subpart SSS—(Reserved) 
302.66 Subpart TTT—(Reserved per A.R.S. § 49-402) 
302.67 Subpart UUU—(Reserved per A.R.S. § 49-402) 
302.68 Subpart VVV—National Emission Standards for Hazardous Air Pollutants: Publicly 
Owned Treatment Works. 
302.69 Subpart WWW—(Reserved) 
302.70 Subpart XXX—National Emission Standards for Hazardous Air Pollutants for 
Ferroalloys Production: Ferromanganese and Silicomanganese. 
302.71 Subpart YYY—(Reserved) 
302.72 Subpart ZZZ—(Reserved) 
302.73 Subpart AAAA—National Emission Standards for Hazardous Air Pollutants: 
Municipal Solid Waste Landfills. 
302.74 Subpart BBBB—(Reserved) 
302.75 Subpart CCCC—National Emission Standards for Hazardous Air Pollutants: 
Manufacturing of Nutritional Yeast. 
302.76 Subpart DDDD—National Emission Standards for Hazardous Air Pollutants: 
Plywood and Composite Wood Products. 
302.77 Subpart EEEE—National Emission Standards for Hazardous Air Pollutants: 
Organic Liquids Distribution (Non-Gasoline). 
302.78 Subpart FFFF—National Emission Standards for Hazardous Air Pollutants: 
Miscellaneous Organic Chemical Manufacturing. 
302.79 Subpart GGGG—National Emission Standards for Hazardous Air Pollutants: 
Solvent Extraction for Vegetable Oil Production. 
302.80 Subpart HHHH—National Emission Standards for Hazardous Air Pollutants for 
Wet-Formed Fiberglass Mat Production. 
302.81 Subpart IIII—National Emission Standards for Hazardous Air Pollutants: Surface 
Coating of Automobiles and Light-Duty Trucks. 
302.82 Subpart JJJJ—National Emission Standards for Hazardous Air Pollutants: Paper 
and Other Web Coating. 
302.83 Subpart KKKK—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Metal Cans. 
302.84 Subpart LLLL—(Reserved) 
302.85 Subpart MMMM—National Emission Standards for Hazardous Air Pollutants for 
Surface Coating of Miscellaneous Metal Parts and Products. 
302.86 Subpart NNNN—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Large Appliances. 
33

302.87 Subpart OOOO—National Emission Standards for Hazardous Air Pollutants: 
Printing, Coating, and Dyeing of Fabrics and Other Textiles. 
302.88 Subpart PPPP—National Emission Standards for Hazardous Air Pollutants for 
Surface Coating of Plastic Parts and Products. 
302.89 Subpart QQQQ—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Wood Building Products. 
302.90 Subpart RRRR—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Metal Furniture. 
302.91 Subpart SSSS—National Emission Standards for Hazardous Air Pollutants: Surface 
Coating of Metal Coil. 
302.92 Subpart TTTT—National Emission Standards for Hazardous Air Pollutants for 
Leather Finishing Operations. 
302.93 Subpart UUUU—National Emission Standards for Hazardous Air Pollutants for 
Cellulose Products Manufacturing. 
302.94 Subpart VVVV—National Emission Standards for Hazardous Air Pollutants for 
Boat Manufacturing. 
302.95 Subpart WWWW—National Emission Standards for Hazardous Air Pollutants: 
Reinforced Plastic Composites Production. 
302.96 Subpart XXXX—National Emission Standards for Hazardous Air Pollutants: 
Rubber Tire Manufacturing. 
302.97 Subpart YYYY—National Emission Standards for Hazardous Air Pollutants for 
Stationary Combustion Turbines. 
302.98 Subpart ZZZZ—National Emission Standards for Hazardous Air Pollutants for 
Stationary Reciprocating Internal Combustion Engines. 
302.99 Subpart AAAAA—National Emission Standards for Hazardous Air Pollutants for 
Lime Manufacturing Plants. 
302.100 Subpart BBBBB—National Emission Standards for Hazardous Air Pollutants for 
Semiconductor Manufacturing. 
302.101 Subpart CCCCC—National Emission Standards for Hazardous Air Pollutants for 
Coke Ovens: Pushing, Quenching, and Battery Stacks. 
302.102 Subpart DDDDD—National Emission Standards for Hazardous Air Pollutants for 
Major Sources: Industrial, Commercial, and Institutional Boilers and Process 
Heaters. 
302.103 Subpart EEEEE—National Emission Standards for Hazardous Air Pollutants for 
Iron and Steel Foundries. 
302.104 Subpart FFFFF—National Emission Standards for Hazardous Air Pollutants for 
Integrated Iron and Steel Manufacturing Facilities. 
302.105 Subpart GGGGG—National Emission Standards for Hazardous Air Pollutants: Site 
Remediation. 
34

302.106 Subpart HHHHH—National Emission Standards for Hazardous Air Pollutants: 
Miscellaneous Coating Manufacturing. 
302.107 Subpart IIIII—National Emission Standards for Hazardous Air Pollutants: 
Mercury Emissions from Mercury Cell Chlor-Alkali Plants. 
302.108 Subpart JJJJJ—National Emission Standards for Hazardous Air Pollutants for Brick 
and Structural Clay Products Manufacturing. 
302.109 Subpart KKKKK—National Emission Standards for Hazardous Air Pollutants for 
Clay Ceramics Manufacturing. 
302.110 Subpart LLLLL—National Emission Standards for Hazardous Air Pollutants: 
Asphalt Processing and Asphalt Roofing Manufacturing. 
302.111 Subpart MMMMM—National Emission Standards for Hazardous Air Pollutants: 
Flexible Polyurethane Foam Fabrication Operations. 
302.112 Subpart NNNNN—National Emission Standards for Hazardous Air Pollutants: 
Hydrochloric Acid Production. 
302.113 Subpart OOOOO—(Reserved) 
302.114 Subpart PPPPP—National Emission Standards for Hazardous Air Pollutants for 
Engine Test Cells/Stands. 
302.115 Subpart QQQQQ—National Emission Standards for Hazardous Air Pollutants for 
Friction Materials Manufacturing Facilities. 
302.116 Subpart RRRRR—National Emission Standards for Hazardous Air Pollutants: 
Taconite Iron Ore Processing. 
302.117 Subpart SSSSS—National Emission Standards for Hazardous Air Pollutants for 
Refractory Products Manufacturing. 
302.118 Subpart TTTTT—National Emission Standards for Hazardous Air Pollutants for 
Primary Magnesium Refining. 
302.119 Subpart UUUUU—(Reserved per A.R.S. § 49-402) 
302.120 Subpart VVVVV—(Reserved) 
302.121 Subpart WWWWW—National Emission Standards for Hospital Ethylene Oxide 
Sterilizers. 
302.122 Subpart XXXXX—(Reserved) 
302.123 Subpart YYYYY—National Emission Standards for Hazardous Air Pollutants for 
Area Sources: Electric Arc Furnace Steelmaking Facilities. 
302.124 Subpart ZZZZZ—National Emission Standards for Hazardous Air Pollutants for 
Iron and Steel Foundries Area Sources. 
302.125 Subpart AAAAAA—(Reserved) 
302.126 Subpart BBBBBB—National Emission Standards for Hazardous Air Pollutants for 
Source Category: Gasoline Distribution Bulk Terminals, Bulk Plants, and Pipeline 
Facilities. 
35

302.127 Subpart CCCCCC—National Emission Standards for Hazardous Air Pollutants for 
Source Category: Gasoline Dispensing Facilities. 
302.128 Subpart DDDDDD—National Emission Standards for Hazardous Air Pollutants 
for Polyvinyl Chloride and Copolymers Production Area Sources. 
302.129 Subpart EEEEEE—(Reserved per A.R.S. § 49-402) 
302.130 Subpart FFFFFF—(Reserved per A.R.S. § 49-402) 
302.131 Subpart GGGGGG—National Emission Standards for Hazardous Air Pollutants 
for Primary Nonferrous Metals Area Sources--Zinc, Cadmium, and Beryllium. 
302.132 Subpart HHHHHH—National Emission Standards for Hazardous Air Pollutants: 
Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources. 
302.133 Subpart IIIIII—(Reserved) 
302.134 Subpart JJJJJJ—National Emission Standards for Hazardous Air Pollutants for 
Area Sources: Industrial, Commercial, and Institutional Boilers. 
302.135 Subpart KKKKKK—(Reserved). 
302.136 Subpart LLLLLL—National Emission Standards for Hazardous Air Pollutants for 
Acrylic and Modacrylic Fibers Production Area Sources. 
302.137 Subpart MMMMMM—National Emission Standards for Hazardous Air Pollutants 
for Carbon Black Production Area Sources. 
302.138 Subpart NNNNNN—National Emission Standards for Hazardous Air Pollutants 
for Chemical Manufacturing Area Sources: Chromium Compounds. 
302.139 Subpart OOOOOO—National Emission Standards for Hazardous Air Pollutants 
for Flexible Polyurethane Foam Production and Fabrication Area Sources. 
302.140 Subpart PPPPPP—National Emission Standards for Hazardous Air Pollutants for 
Lead Acid Battery Manufacturing Area. 
302.141 Subpart QQQQQQ—National Emission Standards for Hazardous Air Pollutants 
for Wood Preserving Area Sources. 
302.142 Subpart RRRRRR—National Emission Standards for Hazardous Air Pollutants for 
Clay Ceramics Manufacturing Area Sources. 
302.143 Subpart SSSSSS—National Emission Standards for Hazardous Air Pollutants for 
Glass Manufacturing Area Sources. 
302.144 Subpart TTTTTT—National Emission Standards for Hazardous Air Pollutants for 
Secondary Nonferrous Metals Processing Area Sources. 
302.145 Subpart UUUUUU—(Reserved) 
302.146 Subpart VVVVVV—National Emission Standards for Hazardous Air Pollutants for 
Chemical Manufacturing Area Sources 
302.147 Subpart WWWWWW—National Emission Standards for Hazardous Air Pollutants: 
Area Source Standards for Plating and Polishing Operations. 
36

302.148 Subpart XXXXXX—National Emission Standards for Hazardous Air Pollutants 
Area Source Standards for Nine Metal Fabrication and Finishing Source Categories. 
302.149 Subpart YYYYYY—National Emission Standards for Hazardous Air Pollutants for 
Area Sources: Ferroalloys Production Facilities. 
302.150 Subpart ZZZZZZ—National Emission Standards for Hazardous Air Pollutants: 
Area Source Standards for Aluminum, Copper, and Other Nonferrous Foundries. 
302.151 Subpart AAAAAAA—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Asphalt Processing and Asphalt Roofing. 
302.152 Subpart BBBBBBB—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Chemical Preparations Industry. 
302.153 Subpart CCCCCCC—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Paints and Allied Products Manufacturing. 
302.154 Subpart DDDDDDD—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Prepared Feeds Manufacturing. 
302.155 Subpart EEEEEEE—National Emission Standards for Hazardous Air Pollutants: 
Gold Mine Ore Processing and Production Area Source Category. 
302.156 Subpart FFFFFFF—(Reserved). 
302.157 Subpart GGGGGGG—(Reserved). 
302.158 Subpart HHHHHHH—National Emission Standards for Hazardous Air 
Pollutant Emissions for Polyvinyl Chloride and Copolymers Production. 
303 
ADDITIONAL REQUIREMENTS: 
303.1 From the general standards identified in Section 301 of this rule, delete 40 CFR 
61.04. All requests, reports, applications, submittals, and other communications to 
the Control Officer pursuant to this rule shall be submitted to the Maricopa County 
Air Quality Department. 
303.2 Where the Act has established provisions, including specific schedules, for the 
regulation of source categories pursuant to Sections 112(e)(5) and 112(n) of the Act, 
the Control Officer may enforce those provisions. 
303.3 For any category or subcategory of sources licensed by the U.S. Nuclear Regulatory 
Commission, the Board of Supervisors shall not adopt and the Control Officer shall 
not enforce any standard or limitation respecting emissions of radionuclides which is 
more stringent than the standard or limitation adopted by the Administrator 
pursuant to Section 112 of the Act. 
303.4 If the Administrator finds by rule that regulation is not appropriate or necessary or 
that alternative control strategies should be applied, the Control Officer shall 
administer and enforce this rule based on the Administrator's findings. 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS 
401 
CONTROL TECHNOLOGY DETERMINATIONS FOR MAJOR SOURCES IN 
ACCORDANCE WITH CLEAN AIR ACT SECTIONS, SECTIONS 112(g) AND 
37

112(j): 40 CFR 63.40 through 40 CFR 63.44 and 40 CFR 63.50 through 40 CFR 63.56 are 
adopted by reference as of July 1, 2020 2021. 
402 
COMPLIANCE EXTENSIONS FOR EARLY REDUCTION OF FEDERALLY 
LISTED HAZARDOUS AIR POLLUTANTS: 40 CFR 63.70 through 40 CFR 63.81 and 
Table 370.1 are adopted by reference as of July 1, 2020 2021. 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE) 
TABLE 370-1. FEDERAL LIST OF HAZARDOUS AIR POLLUTANTS 
A. 
All of the following are federally listed hazardous air pollutants: 
CAS No. 
Chemical Name 
75-07-0 
Acetaldehyde 
60-35-5 
Acetamide 
75-05-8 
Acetonitrile 
98-86-2 
Acetophenone 
53-96-3 
2-Acetylaminofluorene 
107-02-8 
Acrolein 
79-06-1 
Acrylamide 
79-10-7 
Acrylic acid 
107-13-1 
Acrylonitrile 
107-05-1 
Allyl chloride 
92-67-1 
4-Aminobiphenyl 
62-53-3 
Aniline 
90-04-0 
o-Anisidine 
1332-21-4 
Asbestos 
71-43-2 
Benzene (including benzene from 
gasoline) 
92-87-5 
Benzidine 
98-07-7 
Benzotrichloride 
100-44-7 
Benzyl chloride 
92-52-4 
Biphenyl 
117-81-7 
Bis(2-ethylhexyl)phthalate (DEHP) 
542-88-1 
Bis(chloromethyl)ether 
75-25-2 
Bromoform 
106-99-0 
1,3-Butadiene 
156-62-7 
Calcium cyanamide 
133-06-2 
Captan 
63-25-2 
Carbaryl 
75-15-0 
Carbon disulfide 
56-23-5 
Carbon tetrachloride 
463-58-1 
Carbonyl sulfide 
120-80-9 
Catechol 
133-90-4 
Chloramben 
57-74-9 
Chlordane 
7782-50-5 
Chlorine 
79-11-8 
Chloroacetic acid 
CAS No. 
Chemical Name 
532-27-4 
2-Chloroacetophenone 
108-90-7 
Chlorobenzene 
510-15-6 
Chlorobenzilate 
67-66-3 
Chloroform 
107-30-2 
Chloromethyl methyl ether 
126-99-8 
Chloroprene 
1319-77-3 
Cresols/Cresylic acid (isomers and 
mixture) 
95-48-7 
o-Cresol 
108-39-4 
m-Cresol 
106-44-5 
p-Cresol 
98-82-8 
Cumene 
94-75-7 
2,4-D, salts and esters 
3547-04-4 
DDE 
334-88-3 
Diazomethane 
132-64-9 
Dibenzofurans 
96-12-8 
1,2-Dibromo-3-chloropropane 
84-74-2 
Dibutylphthalate 
106-46-7 
1,4-Dichlorobenzene(p) 
91-94-1 
3,3-Dichlorobenzidene 
111-44-4 
Dichloroethyl ether 
(Bis(2-chloroethyl)ether) 
542-75-6 
1,3-Dichloropropene 
62-73-7 
Dichlorvos 
111-42-2 
Diethanolamine 
121-69-7 
N,N-Diethyl aniline 
(N,N-Dimethylaniline) 
64-67-5 
Diethyl sulfate 
119-90-4 
3,3-Dimethoxybenzidine 
60-11-7 
Dimethyl aminoazobenzene 
119-93-7 
3,3’-Dimethyl benzidine 
79-44-7 
Dimethyl carbamoyl chloride 
68-12-2 
Dimethyl formamide 
57-14-7 
1,1-Dimethyl hydrazine 
131-11-3 
Dimethyl phthalate 
38

CAS No. 
Chemical Name 
77-78-1 
Dimethyl sulfate 
534-52-1 
4,6-Dinitro-o-cresol, and salts 
51-28-5 
2,4-Dinitrophenol 
121-14-2 
2,4-Dinitrotoluene 
123-91-1 
1,4-Dioxane (1,4-Diethyleneoxide) 
122-66-7 
1,2-Diphenylhydrazine 
106-89-8 
Epichlorohydrin 
(1-Chloro-2,3-epoxypropane) 
106-88-7 
1,2-Epoxybutane 
140-88-5 
Ethyl acrylate 
100-41-4 
Ethyl benzene 
51-79-6 
Ethyl carbamate (Urethane) 
75-00-3 
Ethyl chloride (Chloroethane) 
106-93-4 
Ethylene dibromide (Dibromoethane)
107-06-2 
Ethylene dichloride 
(1,2-Dichloroethane) 
107-21-1 
Ethylene glycol 
151-56-4 
Ethylene imine (Aziridine) 
75-21-8 
Ethylene oxide 
96-45-7 
Ethylene thiourea 
75-34-3 
Ethylidene dichloride 
(1,1-Dichloroethane) 
50-00-0 
Formaldehyde 
76-44-8 
Heptachlor 
118-74-1 
Hexachlorobenzene 
87-68-3 
Hexachlorobutadiene 
77-47-4 
Hexachlorocyclopentadiene 
67-72-1 
Hexachloroethane 
822-06-0 
Hexamethylene-1,6-diisocyanate 
680-31-9 
Hexamethylphosphoramide 
110-54-3 
Hexane 
302-01-2 
Hydrazine 
7647-01-0 
Hydrochloric acid 
7664-39-3 
Hydrogen fluoride (Hydrofluoric 
acid) 
123-31-9 
Hydroquinone 
78-59-1 
Isophorone 
58-89-9 
Lindane (all isomers) 
108-31-6 
Maleic anhydride 
67-56-1 
Methanol 
72-43-5 
Methoxychlor 
74-83-9 
Methyl bromide (Bromomethane) 
74-87-3 
Methyl chloride (Chloromethane) 
71-55-6 
Methyl chloroform 
(1,1,1-Trichloroethane) 
60-34-4 
Methyl hydrazine 
74-88-4 
Methyl iodide (Iodomethane) 
CAS No. 
Chemical Name 
108-10-1 
Methyl isobutyl ketone (Hexone) 
624-83-9 
Methyl isocyanate 
80-62-6 
Methyl methacrylate 
1634-04-4 
Methyl tert butyl ether 
101-14-4 
4,4-Methylene bis (2-chloroaniline) 
75-09-2 
Methylene chloride 
(Dichloromethane) 
101-68-8 
Methylene diphenyl diisocyanate 
(MDI) 
101-77-9 
4,4’-Methylenedianiline 
91-20-3 
Naphthalene 
98-95-3 
Nitrobenzene 
92-93-3 
4-Nitrobiphenyl 
100-02-7 
4-Nitrophenol 
79-46-9 
2-Nitropropane 
684-93-5 
N-Nitroso-N-methylurea 
62-75-9 
N-Nitrosodimethylamine 
59-89-2 
N-Nitrosomorpholine 
56-38-2 
Parathion 
82-68-8 
Pentachloronitrobenzene 
(Quintobenzene) 
87-86-5 
Pentachlorophenol 
108-95-2 
Phenol 
106-50-3 
p-Phenylenediamine 
75-44-5 
Phosgene 
7803-51-2 
Phosphine 
7723-14-0 
Phosphorus 
85-44-9 
Phthalic anhydride 
1336-36-3 
Polychlorinated biphenyls (Aroclors) 
1120-71-4 
1,3-Propane sultone 
57-57-8 
beta-Propiolactone 
123-38-6 
Propionaldehyde 
114-26-1 
Propoxur (Baygon) 
78-87-5 
Propylene dichloride 
(1,2-Dichloropropane) 
75-56-9 
Propylene oxide 
75-55-8 
1,2-Propylenimine (2-Methylaziridine)
91-22-5 
Quinoline 
106-51-4 
Quinone 
100-42-5 
Styrene 
96-09-3 
Styrene oxide 
1746-01-6 
2,3,7,8-Tetrachlorodibenzo-p-dioxin 
79-34-5 
1,1,2,2-Tetrachloroethane 
127-18-4 
Tetrachloroethylene 
(Perchloroethylene) 
7550-45-0 
Titanium tetrachloride 
108-88-3 
Toluene 
39

CAS No. 
Chemical Name 
95-80-7 
2,4-Toluene diamine 
584-84-9 
2,4-Toluene diisocyanate 
95-53-4 
o-Toluidine 
8001-35-2 
Toxaphene (chlorinated camphene) 
120-82-1 
1,2,4-Trichlorobenzene 
79-00-5 
1,1,2-Trichloroethane 
79-01-6 
Trichloroethylene 
95-95-4 
2,4,5-Trichlorophenol 
88-06-2 
2,4,6-Trichlorophenol 
121-44-8 
Triethylamine 
1582-09-8 
Trifluralin 
540-84-1 
2,2,4-Trimethylpentane 
108-05-4 
Vinyl acetate 
593-60-2 
Vinyl bromide 
75-01-4 
Vinyl chloride 
75-35-4 
Vinylidene chloride 
(1,1-Dichloroethylene) 
1330-20-7 
Xylenes (isomers and mixture) 
95-47-6 
o-Xylenes 
108-38-3 
m-Xylenes 
CAS No. 
Chemical Name 
106-42-3 
p-Xylenes 
0
Antimony Compounds
0 
Arsenic Compounds inorganic 
including arsine) 
0
Beryllium Compounds
0
Cadmium Compounds
0
Chromium Compounds
0
Cobalt Compounds
0 
Coke Oven Emissions 
0
Cyanide Compounds[1] 
0
Glycol ethers[2] 
0
Lead Compounds
0
Manganese Compounds
0
Mercury Compounds
0 
Fine mineral fibers[3] 
0
Nickel Compounds
0 
Polycyclic Organic Matter[4] 
0 
Radionuclides (including radon)[5] 
0
Selenium Compounds
B. 
The following applies for all listings above which contain the word "compounds” or are 
glycol ethers: unless otherwise specified, these listings are defined as including any unique 
chemical substance that contains the named chemical (i.e., antimony, arsenic, etc.) as part of 
that chemical's infrastructure. 
1.
X'CN where X = H' or any other group where a formal dissociation may occur (e.g.
KCN or Ca(CN)2).
2 
a. Includes mono- and di- ethers of ethylene glycol, diethylene glycol, and
triethylene glycol R-(OCH2CH2)n-OR' where:
n = 1, 2, or 3;
R = alkyl C7 or less; or
R = phenyl or alkyl substituted phenyl;
R' = H or alkyl C7 or less; or
OR' consisting of carboxylic acid ester, sulfate, phosphate, nitrate, or sulfonate.
b. Glycol ethers do not include ethylene glycol monobutyl ether (EGBE, 2-
Butoxyethanol) (CAS No. 111-76-2).
3.
Includes mineral fiber emissions from facilities manufacturing or processing glass,
rock, or slag fibers (or other mineral derived fibers) of average diameter one
micrometer (1µ) or less.
4.
Includes organic compounds which have more than one benzene ring and which
have a boiling point greater than or equal to 212 ºF (100 ºC).
5.
A type of atom which spontaneously undergoes radioactive decay.
40

MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 370 
FEDERAL HAZARDOUS AIR POLLUTANT PROGRAM 
INDEX 
SECTION 100 – GENERAL 
101 
PURPOSE 
102 
APPLICABILITY 
103 
FEDERAL DELEGATION AUTHORITY 
SECTION 200 – DEFINITIONS 
201 
ADMINISTRATOR 
202 
AMENDED WATER 
203 
EXISTING SOURCE 
204 
FEDERALLY LISTED HAZARDOUS AIR POLLUTANT 
205 
GOVERNMENT-ISSUED PHOTO IDENTIFICATION CARD 
206 
HAZARDOUS AIR POLLUTANT 
207 
MAJOR SOURCE 
208 
MODIFICATION 
209 
NESHAP 
210 
NEW SOURCE 
211 
STATIONARY SOURCE 
SECTION 300 – STANDARDS 
301 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED 
HAZARDOUS AIR POLLUTANTS 
302 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED 
HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES 
303 
ADDITIONAL REQUIREMENTS 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS 
401 
CONTROL TECHNOLOGY DETERMINATIONS FOR MAJOR SOURCES IN 
ACCORDANCE WITH CLEAN AIR ACT SECTIONS, SECTIONS 112(g) AND 
112(j) 
402 
COMPLIANCE EXTENSIONS FOR EARLY REDUCTION OF FEDERALLY 
LISTED HAZARDOUS AIR POLLUTANTS 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE)
Draft Rule 370 - Clean Version
Return to list of attachments
41

Revised 07/13/1988; Revised 04/06/1992; Repealed and Adopted 11/15/1993; Revised 
11/20/1996; Revised 05/14/1997; Revised 05/20/1998; Revised 08/19/1998; Revised 03/01/2000; 
Revised 03/07/2001; Revised 11/19/2003; Revised 03/15/2006; Revised 12/17/2008; Revised 
09/16/2009; Revised 07/07/2010; Revised 08/17/2011; Revised 07/25/2012; Revised 03/26/2014; 
Revised 11/05/2014; Revised 11/18/2015; Revised 11/02/2016; Revised 12/13/2017; Revised 
11/07/2018; Revised 10/23/2019; Revised 11/18/2020; and Revised 10/20/2021 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 370 
FEDERAL HAZARDOUS AIR POLLUTANT PROGRAM 
SECTION 100 – GENERAL 
101 
PURPOSE: To establish emission standards for federally listed hazardous air pollutants. 
102 
APPLICABILITY: The provisions of this rule apply to the owner or operator of any 
stationary source for which a standard is prescribed under this rule, and for which federal 
delegation of the implementation and enforcement of the standards to the Maricopa County 
Air Quality Department (MCAQD) has been accomplished. Any such stationary source 
must also comply with other Maricopa County Air Pollution Control Regulations. 
103 
FEDERAL DELEGATION AUTHORITY: The MCAQD shall enforce the national 
emission standards for hazardous air pollutants (NESHAPs) (40 CFR 61 and 40 CFR 63) 
listed in Section 300 of this rule which have been delegated to the County by the United 
States Environmental Protection Agency (EPA) for such enforcement. The MCAQD in 
addition, may enforce such other NESHAPs as delegated for such enforcement by the EPA 
to the County. 
SECTION 200 – DEFINITIONS: For the purpose of this rule, the following definitions shall 
apply, in addition to those definitions found in Rule 100 (General Provisions and Definitions) of 
these rules. In the event of any inconsistency between any of the Maricopa County air pollution 
control rules, the definitions in this rule take precedence. 
201 
ADMINISTRATOR: As used in Parts 61 and 63, Title 40, Code of Federal Regulations, 
shall mean the Control Officer, except that the Control Officer shall not be empowered to 
approve alternate or equivalent test methods, alternative standards/work practices, or other 
nondelegable authorities, except as specifically provided in each subpart. 
202 
AMENDED WATER: Water to which surfactant (wetting agent) has been added to 
increase the ability of the liquid to penetrate asbestos-containing material (ACM). 
203 
EXISTING SOURCE: Any stationary source other than a new source. 
204 
FEDERALLY LISTED HAZARDOUS AIR POLLUTANT: Any air pollutant listed 
pursuant to Section 112(b) of the Act. 
42

205 
GOVERNMENT-ISSUED PHOTO IDENTIFICATION CARD: Includes, but is not 
limited to, a valid driver's license, a valid non-operating identification license, a valid tribal 
enrollment card or tribal identification card, or other valid government issued photo 
identification that includes the name, address, and photograph of the card holder. 
206 
HAZARDOUS AIR POLLUTANT: Any air pollutant regulated under Section 112 of the 
Act, any air pollutant subject to NESHAP, or any air pollutant designated by the Director as 
a hazardous air pollutant pursuant to A.R.S. § 49-426.04. 
207 
MAJOR SOURCE: A stationary source or group of stationary sources located within a 
contiguous area, and under common control, and that emits or has the potential to emit 
considering controls, in the aggregate, 10 tons per year or more of any federally listed 
hazardous air pollutant or 25 tons per year or more of any combination of federally listed 
hazardous air pollutants. A lesser quantity or, in the case of radionuclides, a different criteria 
may be established by the Administrator pursuant to Section 112 of the Act and may be 
adopted by the Board of Supervisors by rule. 
208 
MODIFICATION: Any physical change in, or change in the method of operation of a 
major source which increases the actual emissions of any federally listed hazardous air 
pollutant emitted by such source by more than a de minimis amount, or which results in the 
emission of any federally listed hazardous air pollutant, not previously emitted by more than 
a de minimis amount. 
209 
NESHAP: National emission standards for hazardous air pollutants pursuant to 40 CFR 
Part 61 and Part 63. 
210 
NEW SOURCE: A stationary source, the construction or reconstruction of which 
commences after the Administrator first proposes regulations under Section 112 of the Act 
establishing an emission standard applicable to such source. 
211 
STATIONARY SOURCE: Any building, structure, facility, or installation which emits or 
may emit any air pollutant. 
SECTION 300 – STANDARDS 
301 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED HAZARDOUS 
AIR POLLUTANTS: The federally listed hazardous air pollutants as listed in TABLE 370-
1. FEDERAL LIST OF HAZARDOUS AIR POLLUTANTS of this rule and the following 
federal regulations located in the U.S. Code of Federal Regulations, Part 61 of Title 40, 
Subchapter C (CFR) as codified on July 1, 2021, are herein incorporated by reference with 
the listed exclusions, in Maricopa County’s Air Pollution Control Regulations. This 
incorporation by reference includes no future editions or amendments. Each owner or 
operator subject to the requirements of the following subparts shall comply with the 
requirements of those subparts and the additional requirements set forth herein. Incorpo-
ration by reference does not include nondelegable functions of the EPA Administrator. 
301.1 Subpart A—General Provisions; exclude any sections dealing with equivalency 
determinations that are nontransferable through Section 112(e)(3) of the Act. 
301.2 Subpart C—National Emission Standard for Beryllium. 
43

301.3 Subpart D—National Emission Standard for Beryllium Rocket Motor Firing. 
301.4 Subpart E—National Emission Standard for Mercury. 
301.5 Subpart F—National Emission Standard for Vinyl Chloride. 
301.6 Subpart G—(Reserved) 
301.7 Subpart J—National Emission Standard for Equipment Leaks (Fugitive Emission 
Sources) of Benzene. 
301.8 Subpart L—National Emission Standard for Benzene Emissions from Coke By-
Product Recovery Plants. 
301.9 Subpart M—National Emission Standard for Asbestos. 
a. Each owner or operator of a demolition activity or renovation activity involving
a facility as defined in 40 CFR 61, Subpart M shall:
(1) Fully comply with all requirements of 40 CFR 61, Subpart M.
(2) Thoroughly inspect the facility within 12 months of commencement of
demolition or renovation activity for the presence of asbestos, including 
Category I and Category II nonfriable ACM. Include the date of this 
inspection on the written notification. 
(3) Provide the Control Officer with written notification of intention to 
demolish or to renovate in the manner described in 40 CFR 61.145. 
(4) Update all notifications in accordance with 40 CFR 61.145(b). For 
renovations described in 40 CFR 61.145(a)(4)(iii), notifications shall expire 
every December 31, with new notices required at least 10 working days 
before the end of the calendar year preceding the year for which notice is 
being given. All other notifications shall expire one year from either the 
original postmark date or commercial delivery date or date of hand delivery 
to the Control Officer. For a demolition activity or renovation activity that 
continues beyond the expiration date, the owner or operator of the 
demolition or renovation activity shall notify the Control Officer in 
accordance with 40 CFR 61.145(b) at least 10 working days prior to the 
expiration of the original notice and pay all applicable fees prescribed by Rule 
280 of these rules. 
(5) Pay all applicable fees prescribed by Rule 280 of these rules. 
b. In addition, each owner or operator of a demolition activity or renovation
activity shall comply with the following requirements:
(1) Certification, training, and record keeping requirements:
(a) All facilities scheduled for demolition or renovation shall be inspected by 
a currently certified Asbestos Hazard Emergency Response Act 
(AHERA) accredited asbestos building inspector (herein referenced as 
inspector), as required by either AHERA or the Asbestos School Hazard 
Abatement Reauthorization Act (ASHARA). 
44

(b) Each owner and operator of a facility shall maintain a copy of any reports 
of inspections made for a facility for two years from completion of 
project, including laboratory test results of samples collected. A copy of 
the inspection reports and laboratory test results shall be on-site and 
available for inspection at the facility, upon request of the MCAQD, 
during all demolition and renovation (asbestos setup, removal, handling, 
collecting, containerizing, cleanup and dismantling) activities. 
(c) All asbestos workers shall maintain current AHERA worker certification. 
All asbestos contractor/supervisors shall maintain current 
AHERA/ASHARA contractor/supervisor certification and shall be on-
site at all times during any active asbestos abatement work at or above 
NESHAP threshold amounts. A legible copy of all asbestos workers and 
contractor/supervisor's current training certificates from an EPA 
accredited training provider shall be available for inspection at all times at 
the demolition or renovation site. 
(d) All asbestos workers and contractor/supervisors shall have color photo 
identification on-site and available for inspection, upon request of the 
MCAQD, at all times during asbestos setup, removal, handling, 
collecting, containerizing, cleanup and dismantling. The color photo 
identification shall be from an EPA accredited training provider verifying 
the certification requirements in section (b)(1)(c), or a current 
government-issued photo identification card. 
(2) Asbestos renovation and demolition standards: 
(a) A facility owner or operator shall not create visible dust emissions when 
removing or transporting to the disposal site Category I nonfriable 
asbestos-containing material (ACM) and Category II nonfriable ACM 
that remain nonfriable Category I ACM and nonfriable Category II 
ACM. 
(b) Inspection viewing devices at facilities are required at all asbestos 
renovation projects where regulated asbestos-containing material 
(RACM) is being abated, except for roofing projects involving Category I 
nonfriable ACM and Category II nonfriable ACM exclusively. Viewing 
devices shall be so designed as to allow an inspector to view the facility 
from the outside, either through ports or by video monitoring. 
(c) All exposed RACM subject to cutting or dismantling operations and all 
RACM being removed from a facility or a facility component shall be 
kept adequately wet by using amended water to control the release of 
asbestos fibers. The use of amended water will not be required in the 
case of an ordered demolition, as defined in 40 CFR 61.145(a)(3), where 
the debris is suspected to contain or is known to contain ACM, however 
ordered demolitions are subject to 40 CFR 61.145(c)(9). Specific 
exemptions are listed under 40 CFR 61.145(c)(3)(i)(A), 40 CFR 
61.145(c)(3)(ii) and/or 40 CFR 61.145(c)(7)(i). To claim these 
exemptions, the owner or operator shall follow the requirements of 40 
45

CFR 61.145(c)(3)(i)(B), 40 CFR 61.145(c)(3)(iii) and/or 61.145(c)(7)(ii) 
and (iii). 
(d) All RACM shall be contained in transparent, leak-tight wrapping and 
shall remain adequately wet to prevent dust emissions during removal, 
transport, storage, and proper landfill disposal following local, county, 
state, and federal regulations. Affix a visible and legible label to each 
individual wrapping with the name of the site owner or operator and the 
name and address of the location that generated the RACM. 
301.10 Subpart N—National Emission Standard for Inorganic Arsenic Emissions from 
Glass Manufacturing Plants. 
301.11 Subpart O—(Reserved per A.R.S. § 49-402) 
301.12 Subpart P—National Emission Standard for Inorganic Arsenic Emissions from 
Arsenic Trioxide and Metallic Arsenic Production Facilities. 
301.13 Subpart S—(Reserved) 
301.14 Subpart U—(Reserved) 
301.15 Subpart V—National Emission Standard for Equipment Leaks (Fugitive Emission 
Sources). 
301.16 Subpart X—(Reserved) 
301.17 Subpart Y—National Emission Standard for Benzene Emissions from Benzene 
Storage Vessels. 
301.18 Subpart Z—(Reserved) 
301.19 Subpart AA—(Reserved) 
301.20 Subpart BB—National Emission Standard for Benzene Emissions from Benzene 
Transfer Operations. 
301.21 Subpart CC—(Reserved) 
301.22 Subpart DD—(Reserved) 
301.23 Subpart EE—(Reserved) 
301.24 Subpart FF—National Emission Standard for Benzene Waste Operations. 
302 
STANDARDS OF PERFORMANCE FOR FEDERALLY LISTED HAZARDOUS 
AIR POLLUTANTS FOR SOURCE CATEGORIES: The federally listed hazardous air 
pollutants as listed in TABLE 370-1. FEDERAL LIST OF HAZARDOUS AIR 
POLLUTANTS of this rule and the following federal regulations located in the U.S. Code of 
Federal Regulations, Part 63 of Title 40, Subchapter C (CFR), as codified on July 1, 2021, are 
herein incorporated by reference with the listed exclusions, in Maricopa County’s Air 
Pollution Control Regulations. This incorporation by reference includes no future editions 
or amendments. Each owner or operator subject to the requirements of the following 
subparts shall comply with the requirements of those subparts and the additional 
requirements set forth herein. Incorporation by reference does not include nondelegable 
functions of the EPA Administrator. 
46

302.1 Subpart A—General Provisions. 
302.2 Subpart F—National Emission Standards for Organic Hazardous Air Pollutants 
from the Synthetic Organic Chemical Manufacturing Industry. 
302.3 Subpart G—National Emission Standards for Organic Hazardous Air Pollutants 
from the Synthetic Organic Chemical Manufacturing Industry for Process Vents, 
Storage Vessels, Transfer Operations, and Wastewater. 
302.4 Subpart H—National Emission Standards for Organic Hazardous Air Pollutants for 
Equipment Leaks. 
302.5 Subpart I—National Emission Standards for Organic Hazardous Air Pollutants for 
Certain Processes Subject to the Negotiated Regulation for Equipment Leaks. 
302.6 Subpart J—National Emission Standards for Hazardous Air Pollutants for Polyvinyl 
Chloride and Copolymers Production. 
302.7 Subpart K—(Reserved) 
302.8 Subpart L—National Emission Standards for Coke Oven Batteries. 
302.9 Subpart M—National Perchloroethylene Air Emission Standards for Dry Cleaning 
Facilities. 
302.10 Subpart N—National Emission Standards for Chromium Emissions from Hard and 
Decorative Chromium Electroplating and Chromium Anodizing Tanks. 
302.11 Subpart O—Ethylene Oxide Emissions Standards for Sterilization Facilities. 
302.12 Subpart P—(Reserved) 
302.13 Subpart Q—National Emission Standards for Hazardous Air Pollutants for 
Industrial Process Cooling Towers. 
302.14 Subpart R—National Emission Standards for Gasoline Distribution Facilities (Bulk 
Gasoline Terminals and Pipeline Breakout Stations). 
302.15 Subpart S—National Emission Standards for Hazardous Air Pollutants from the 
Pulp and Paper Industry. 
302.16 Subpart T—National Emission Standards for Halogenated Solvent Cleaning. 
302.17 Subpart U—National Emission Standards for Hazardous Air Pollutant Emissions: 
Group I Polymers and Resins. 
302.18 Subpart V—(Reserved) 
302.19 Subpart W—National Emission Standards for Hazardous Air Pollutants for Epoxy 
Resins Production and Non-Nylon Polyamides Production. 
302.20 Subpart X—(Reserved per A.R.S. § 49-402) 
302.21 Subpart Z—(Reserved) 
302.22 Subpart AA—National Emission Standards for Hazardous Air Pollutants from 
Phosphoric Acid Manufacturing Plants. 
302.23 Subpart BB—National Emission Standards for Hazardous Air Pollutants from 
Phosphate Fertilizers Production Plants. 
47

302.24 Subpart CC—(Reserved per A.R.S. § 49-402) 
302.25 Subpart DD—National Emission Standards for Hazardous Air Pollutants from 
Off-Site Waste and Recovery Operations. 
302.26 Subpart EE—National Emission Standards for Magnetic Tape Manufacturing 
Operations. 
302.27 Subpart FF—(Reserved) 
302.28 Subpart GG—National Emission Standards for Aerospace Manufacturing and 
Rework Facilities. 
302.29 Subpart HH—National Emission Standards for Hazardous Air Pollutants from Oil 
and Natural Gas Production Facilities. 
302.30 Subpart JJ—National Emission Standards for Wood Furniture Manufacturing 
Operations. 
302.31 Subpart KK—National Emission Standards for the Printing and Publishing 
Industry. 
302.32 Subpart LL—National Emission Standards for Hazardous Air Pollutants for 
Primary Aluminum Reduction Plants. 
302.33 Subpart MM—National Emission Standards for Hazardous Air Pollutants for 
Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and Stand-Alone 
Semichemical Pulp Mills. 
302.34 Subpart NN—National Emission Standards for Hazardous Air Pollutants for Wool 
Fiberglass Manufacturing at Area Sources. 
302.35 Subpart OO—National Emission Standards for Tanks – Level 1. 
302.36 Subpart PP—National Emission Standards for Containers. 
302.37 Subpart QQ—National Emission Standards for Surface Impoundments. 
302.38 Subpart RR—National Emission Standards for Individual Drain Systems. 
302.39 Subpart SS—National Emission Standards for Closed Vent Systems, Control 
Devices, Recovery Devices and Routing to a Fuel Gas System or a Process. 
302.40 Subpart TT—National Emission Standards for Equipment Leaks – Control Level 1. 
302.41 Subpart UU—National Emission Standards for Equipment Leaks – Control Level 2 
Standards. 
302.42 Subpart VV—National Emission Standards for Oil-Water Separators and Organic-
Water Separators. 
302.43 Subpart WW—National Emission Standards for Storage Vessels (Tanks) – Control 
Level 2. 
302.44 Subpart XX—National Emission Standards for Ethylene Manufacturing Process 
Units: Heat Exchange Systems and Waste Operations. 
302.45 Subpart YY—National Emission Standards for Hazardous Air Pollutants for Source 
Categories: Generic Maximum Achievable Control Technology Standards. 
48

302.46 Subpart ZZ—(Reserved) 
302.47 Subpart AAA—(Reserved) 
302.48 Subpart BBB—(Reserved) 
302.49 Subpart CCC—National Emission Standards for Hazardous Air Pollutants for Steel 
Pickling – HCl Process Facilities and Hydrochloric Acid Regeneration Plants. 
302.50 Subpart DDD—National Emission Standards for Hazardous Air Pollutants for 
Mineral Wool Production. 
302.51 Subpart EEE—National Emission Standards for Hazardous Air Pollutants from 
Hazardous Waste Combustors. 
302.52 Subpart FFF—(Reserved) 
302.53 Subpart GGG—National Emission Standards for Pharmaceuticals Production. 
302.54 Subpart HHH—National Emission Standards for Hazardous Air Pollutants from 
Natural Gas Transmission and Storage Facilities. 
302.55 Subpart III—National Emission Standards for Hazardous Air Pollutants for 
Flexible Polyurethane Foam Production. 
302.56 Subpart JJJ—National Emission Standards for Hazardous Air Pollutant Emissions: 
Group IV Polymers and Resins. 
302.57 Subpart KKK—(Reserved) 
302.58 Subpart LLL—(Reserved per A.R.S. § 49-402) 
302.59 Subpart MMM—National Emission Standards for Hazardous Air Pollutants for 
Pesticide Active Ingredient Production. 
302.60 Subpart NNN—National Emission Standards for Hazardous Air Pollutants for 
Wool Fiberglass Manufacturing. 
302.61 Subpart OOO—National Emission Standards for Hazardous Air Pollutant 
Emissions: Manufacture of Amino/Phenolic Resins. 
302.62 Subpart PPP—National Emission Standards for Hazardous Air Pollutant 
Emissions for Polyether Polyols Production. 
302.63 Subpart QQQ—(Reserved per A.R.S. § 49-402) 
302.64 Subpart RRR—National Emission Standards for Hazardous Air Pollutants for 
Secondary Aluminum Production. 
302.65 Subpart SSS—(Reserved) 
302.66 Subpart TTT—(Reserved per A.R.S. § 49-402) 
302.67 Subpart UUU—(Reserved per A.R.S. § 49-402) 
302.68 Subpart VVV—National Emission Standards for Hazardous Air Pollutants: Publicly 
Owned Treatment Works. 
302.69 Subpart WWW—(Reserved) 
49

302.70 Subpart XXX—National Emission Standards for Hazardous Air Pollutants for 
Ferroalloys Production: Ferromanganese and Silicomanganese. 
302.71 Subpart YYY—(Reserved) 
302.72 Subpart ZZZ—(Reserved) 
302.73 Subpart AAAA—National Emission Standards for Hazardous Air Pollutants: 
Municipal Solid Waste Landfills. 
302.74 Subpart BBBB—(Reserved) 
302.75 Subpart CCCC—National Emission Standards for Hazardous Air Pollutants: 
Manufacturing of Nutritional Yeast. 
302.76 Subpart DDDD—National Emission Standards for Hazardous Air Pollutants: 
Plywood and Composite Wood Products. 
302.77 Subpart EEEE—National Emission Standards for Hazardous Air Pollutants: 
Organic Liquids Distribution (Non-Gasoline). 
302.78 Subpart FFFF—National Emission Standards for Hazardous Air Pollutants: 
Miscellaneous Organic Chemical Manufacturing. 
302.79 Subpart GGGG—National Emission Standards for Hazardous Air Pollutants: 
Solvent Extraction for Vegetable Oil Production. 
302.80 Subpart HHHH—National Emission Standards for Hazardous Air Pollutants for 
Wet-Formed Fiberglass Mat Production. 
302.81 Subpart IIII—National Emission Standards for Hazardous Air Pollutants: Surface 
Coating of Automobiles and Light-Duty Trucks. 
302.82 Subpart JJJJ—National Emission Standards for Hazardous Air Pollutants: Paper 
and Other Web Coating. 
302.83 Subpart KKKK—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Metal Cans. 
302.84 Subpart LLLL—(Reserved) 
302.85 Subpart MMMM—National Emission Standards for Hazardous Air Pollutants for 
Surface Coating of Miscellaneous Metal Parts and Products. 
302.86 Subpart NNNN—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Large Appliances. 
302.87 Subpart OOOO—National Emission Standards for Hazardous Air Pollutants: 
Printing, Coating, and Dyeing of Fabrics and Other Textiles. 
302.88 Subpart PPPP—National Emission Standards for Hazardous Air Pollutants for 
Surface Coating of Plastic Parts and Products. 
302.89 Subpart QQQQ—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Wood Building Products. 
302.90 Subpart RRRR—National Emission Standards for Hazardous Air Pollutants: 
Surface Coating of Metal Furniture. 
50

302.91 Subpart SSSS—National Emission Standards for Hazardous Air Pollutants: Surface 
Coating of Metal Coil. 
302.92 Subpart TTTT—National Emission Standards for Hazardous Air Pollutants for 
Leather Finishing Operations. 
302.93 Subpart UUUU—National Emission Standards for Hazardous Air Pollutants for 
Cellulose Products Manufacturing. 
302.94 Subpart VVVV—National Emission Standards for Hazardous Air Pollutants for 
Boat Manufacturing. 
302.95 Subpart WWWW—National Emission Standards for Hazardous Air Pollutants: 
Reinforced Plastic Composites Production. 
302.96 Subpart XXXX—National Emission Standards for Hazardous Air Pollutants: 
Rubber Tire Manufacturing. 
302.97 Subpart YYYY—National Emission Standards for Hazardous Air Pollutants for 
Stationary Combustion Turbines. 
302.98 Subpart ZZZZ—National Emission Standards for Hazardous Air Pollutants for 
Stationary Reciprocating Internal Combustion Engines. 
302.99 Subpart AAAAA—National Emission Standards for Hazardous Air Pollutants for 
Lime Manufacturing Plants. 
302.100 Subpart BBBBB—National Emission Standards for Hazardous Air Pollutants for 
Semiconductor Manufacturing. 
302.101 Subpart CCCCC—National Emission Standards for Hazardous Air Pollutants for 
Coke Ovens: Pushing, Quenching, and Battery Stacks. 
302.102 Subpart DDDDD—National Emission Standards for Hazardous Air Pollutants for 
Major Sources: Industrial, Commercial, and Institutional Boilers and Process 
Heaters. 
302.103 Subpart EEEEE—National Emission Standards for Hazardous Air Pollutants for 
Iron and Steel Foundries. 
302.104 Subpart FFFFF—National Emission Standards for Hazardous Air Pollutants for 
Integrated Iron and Steel Manufacturing Facilities. 
302.105 Subpart GGGGG—National Emission Standards for Hazardous Air Pollutants: Site 
Remediation. 
302.106 Subpart HHHHH—National Emission Standards for Hazardous Air Pollutants: 
Miscellaneous Coating Manufacturing. 
302.107 Subpart IIIII—National Emission Standards for Hazardous Air Pollutants: 
Mercury Emissions from Mercury Cell Chlor-Alkali Plants. 
302.108 Subpart JJJJJ—National Emission Standards for Hazardous Air Pollutants for Brick 
and Structural Clay Products Manufacturing. 
302.109 Subpart KKKKK—National Emission Standards for Hazardous Air Pollutants for 
Clay Ceramics Manufacturing. 
51

302.110 Subpart LLLLL—National Emission Standards for Hazardous Air Pollutants: 
Asphalt Processing and Asphalt Roofing Manufacturing. 
302.111 Subpart MMMMM—National Emission Standards for Hazardous Air Pollutants: 
Flexible Polyurethane Foam Fabrication Operations. 
302.112 Subpart NNNNN—National Emission Standards for Hazardous Air Pollutants: 
Hydrochloric Acid Production. 
302.113 Subpart OOOOO—(Reserved) 
302.114 Subpart PPPPP—National Emission Standards for Hazardous Air Pollutants for 
Engine Test Cells/Stands. 
302.115 Subpart QQQQQ—National Emission Standards for Hazardous Air Pollutants for 
Friction Materials Manufacturing Facilities. 
302.116 Subpart RRRRR—National Emission Standards for Hazardous Air Pollutants: 
Taconite Iron Ore Processing. 
302.117 Subpart SSSSS—National Emission Standards for Hazardous Air Pollutants for 
Refractory Products Manufacturing. 
302.118 Subpart TTTTT—National Emission Standards for Hazardous Air Pollutants for 
Primary Magnesium Refining. 
302.119 Subpart UUUUU—(Reserved per A.R.S. § 49-402) 
302.120 Subpart VVVVV—(Reserved) 
302.121 Subpart WWWWW—National Emission Standards for Hospital Ethylene Oxide 
Sterilizers. 
302.122 Subpart XXXXX—(Reserved) 
302.123 Subpart YYYYY—National Emission Standards for Hazardous Air Pollutants for 
Area Sources: Electric Arc Furnace Steelmaking Facilities. 
302.124 Subpart ZZZZZ—National Emission Standards for Hazardous Air Pollutants for 
Iron and Steel Foundries Area Sources. 
302.125 Subpart AAAAAA—(Reserved) 
302.126 Subpart BBBBBB—National Emission Standards for Hazardous Air Pollutants for 
Source Category: Gasoline Distribution Bulk Terminals, Bulk Plants, and Pipeline 
Facilities. 
302.127 Subpart CCCCCC—National Emission Standards for Hazardous Air Pollutants for 
Source Category: Gasoline Dispensing Facilities. 
302.128 Subpart DDDDDD—National Emission Standards for Hazardous Air Pollutants 
for Polyvinyl Chloride and Copolymers Production Area Sources. 
302.129 Subpart EEEEEE—(Reserved per A.R.S. § 49-402) 
302.130 Subpart FFFFFF—(Reserved per A.R.S. § 49-402) 
302.131 Subpart GGGGGG—National Emission Standards for Hazardous Air Pollutants 
for Primary Nonferrous Metals Area Sources--Zinc, Cadmium, and Beryllium. 
52

302.132 Subpart HHHHHH—National Emission Standards for Hazardous Air Pollutants: 
Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources. 
302.133 Subpart IIIIII—(Reserved) 
302.134 Subpart JJJJJJ—National Emission Standards for Hazardous Air Pollutants for 
Area Sources: Industrial, Commercial, and Institutional Boilers. 
302.135 Subpart KKKKKK—(Reserved). 
302.136 Subpart LLLLLL—National Emission Standards for Hazardous Air Pollutants for 
Acrylic and Modacrylic Fibers Production Area Sources. 
302.137 Subpart MMMMMM—National Emission Standards for Hazardous Air Pollutants 
for Carbon Black Production Area Sources. 
302.138 Subpart NNNNNN—National Emission Standards for Hazardous Air Pollutants 
for Chemical Manufacturing Area Sources: Chromium Compounds. 
302.139 Subpart OOOOOO—National Emission Standards for Hazardous Air Pollutants 
for Flexible Polyurethane Foam Production and Fabrication Area Sources. 
302.140 Subpart PPPPPP—National Emission Standards for Hazardous Air Pollutants for 
Lead Acid Battery Manufacturing Area. 
302.141 Subpart QQQQQQ—National Emission Standards for Hazardous Air Pollutants 
for Wood Preserving Area Sources. 
302.142 Subpart RRRRRR—National Emission Standards for Hazardous Air Pollutants for 
Clay Ceramics Manufacturing Area Sources. 
302.143 Subpart SSSSSS—National Emission Standards for Hazardous Air Pollutants for 
Glass Manufacturing Area Sources. 
302.144 Subpart TTTTTT—National Emission Standards for Hazardous Air Pollutants for 
Secondary Nonferrous Metals Processing Area Sources. 
302.145 Subpart UUUUUU—(Reserved) 
302.146 Subpart VVVVVV—National Emission Standards for Hazardous Air Pollutants for 
Chemical Manufacturing Area Sources 
302.147 Subpart WWWWWW—National Emission Standards for Hazardous Air Pollutants: 
Area Source Standards for Plating and Polishing Operations. 
302.148 Subpart XXXXXX—National Emission Standards for Hazardous Air Pollutants 
Area Source Standards for Nine Metal Fabrication and Finishing Source Categories. 
302.149 Subpart YYYYYY—National Emission Standards for Hazardous Air Pollutants for 
Area Sources: Ferroalloys Production Facilities. 
302.150 Subpart ZZZZZZ—National Emission Standards for Hazardous Air Pollutants: 
Area Source Standards for Aluminum, Copper, and Other Nonferrous Foundries. 
302.151 Subpart AAAAAAA—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Asphalt Processing and Asphalt Roofing. 
302.152 Subpart BBBBBBB—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Chemical Preparations Industry. 
53

302.153 Subpart CCCCCCC—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Paints and Allied Products Manufacturing. 
302.154 Subpart DDDDDDD—National Emission Standards for Hazardous Air Pollutants 
for Area Sources: Prepared Feeds Manufacturing. 
302.155 Subpart EEEEEEE—National Emission Standards for Hazardous Air Pollutants: 
Gold Mine Ore Processing and Production Area Source Category. 
302.156 Subpart FFFFFFF—(Reserved). 
302.157 Subpart GGGGGGG—(Reserved). 
302.158 Subpart HHHHHHH—National Emission Standards for Hazardous Air 
Pollutant Emissions for Polyvinyl Chloride and Copolymers Production. 
303 
ADDITIONAL REQUIREMENTS: 
303.1 From the general standards identified in Section 301 of this rule, delete 40 CFR 
61.04. All requests, reports, applications, submittals, and other communications to 
the Control Officer pursuant to this rule shall be submitted to the Maricopa County 
Air Quality Department. 
303.2 Where the Act has established provisions, including specific schedules, for the 
regulation of source categories pursuant to Sections 112(e)(5) and 112(n) of the Act, 
the Control Officer may enforce those provisions. 
303.3 For any category or subcategory of sources licensed by the U.S. Nuclear Regulatory 
Commission, the Board of Supervisors shall not adopt and the Control Officer shall 
not enforce any standard or limitation respecting emissions of radionuclides which is 
more stringent than the standard or limitation adopted by the Administrator 
pursuant to Section 112 of the Act. 
303.4 If the Administrator finds by rule that regulation is not appropriate or necessary or 
that alternative control strategies should be applied, the Control Officer shall 
administer and enforce this rule based on the Administrator's findings. 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS 
401 
CONTROL TECHNOLOGY DETERMINATIONS FOR MAJOR SOURCES IN 
ACCORDANCE WITH CLEAN AIR ACT SECTIONS, SECTIONS 112(g) AND 
112(j): 40 CFR 63.40 through 40 CFR 63.44 and 40 CFR 63.50 through 40 CFR 63.56 are 
adopted by reference as of July 1, 2021. 
402 
COMPLIANCE EXTENSIONS FOR EARLY REDUCTION OF FEDERALLY 
LISTED HAZARDOUS AIR POLLUTANTS: 40 CFR 63.70 through 40 CFR 63.81 and 
Table 370.1 are adopted by reference as of July 1, 2021. 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE) 
TABLE 370-1. FEDERAL LIST OF HAZARDOUS AIR POLLUTANTS 
A. 
All of the following are federally listed hazardous air pollutants: 
54

CAS No. 
Chemical Name 
75-07-0 
Acetaldehyde 
60-35-5 
Acetamide 
75-05-8 
Acetonitrile 
98-86-2 
Acetophenone 
53-96-3 
2-Acetylaminofluorene 
107-02-8 
Acrolein 
79-06-1 
Acrylamide 
79-10-7 
Acrylic acid 
107-13-1 
Acrylonitrile 
107-05-1 
Allyl chloride 
92-67-1 
4-Aminobiphenyl 
62-53-3 
Aniline 
90-04-0 
o-Anisidine 
1332-21-4 
Asbestos 
71-43-2 
Benzene (including benzene from 
gasoline) 
92-87-5 
Benzidine 
98-07-7 
Benzotrichloride 
100-44-7 
Benzyl chloride 
92-52-4 
Biphenyl 
117-81-7 
Bis(2-ethylhexyl)phthalate (DEHP) 
542-88-1 
Bis(chloromethyl)ether 
75-25-2 
Bromoform 
106-99-0 
1,3-Butadiene 
156-62-7 
Calcium cyanamide 
133-06-2 
Captan 
63-25-2 
Carbaryl 
75-15-0 
Carbon disulfide 
56-23-5 
Carbon tetrachloride 
463-58-1 
Carbonyl sulfide 
120-80-9 
Catechol 
133-90-4 
Chloramben 
57-74-9 
Chlordane 
7782-50-5 
Chlorine 
79-11-8 
Chloroacetic acid 
532-27-4 
2-Chloroacetophenone 
108-90-7 
Chlorobenzene 
510-15-6 
Chlorobenzilate 
67-66-3 
Chloroform 
107-30-2 
Chloromethyl methyl ether 
126-99-8 
Chloroprene 
1319-77-3 
Cresols/Cresylic acid (isomers and 
mixture) 
95-48-7 
o-Cresol 
108-39-4 
m-Cresol 
106-44-5 
p-Cresol 
98-82-8 
Cumene 
CAS No. 
Chemical Name 
94-75-7 
2,4-D, salts and esters 
3547-04-4 
DDE 
334-88-3 
Diazomethane 
132-64-9 
Dibenzofurans 
96-12-8 
1,2-Dibromo-3-chloropropane 
84-74-2 
Dibutylphthalate 
106-46-7 
1,4-Dichlorobenzene(p) 
91-94-1 
3,3-Dichlorobenzidene 
111-44-4 
Dichloroethyl ether 
(Bis(2-chloroethyl)ether) 
542-75-6 
1,3-Dichloropropene 
62-73-7 
Dichlorvos 
111-42-2 
Diethanolamine 
121-69-7 
N,N-Diethyl aniline 
(N,N-Dimethylaniline) 
64-67-5 
Diethyl sulfate 
119-90-4 
3,3-Dimethoxybenzidine 
60-11-7 
Dimethyl aminoazobenzene 
119-93-7 
3,3’-Dimethyl benzidine 
79-44-7 
Dimethyl carbamoyl chloride 
68-12-2 
Dimethyl formamide 
57-14-7 
1,1-Dimethyl hydrazine 
131-11-3 
Dimethyl phthalate 
77-78-1 
Dimethyl sulfate 
534-52-1 
4,6-Dinitro-o-cresol, and salts 
51-28-5 
2,4-Dinitrophenol 
121-14-2 
2,4-Dinitrotoluene 
123-91-1 
1,4-Dioxane (1,4-Diethyleneoxide) 
122-66-7 
1,2-Diphenylhydrazine 
106-89-8 
Epichlorohydrin 
(1-Chloro-2,3-epoxypropane) 
106-88-7 
1,2-Epoxybutane 
140-88-5 
Ethyl acrylate 
100-41-4 
Ethyl benzene 
51-79-6 
Ethyl carbamate (Urethane) 
75-00-3 
Ethyl chloride (Chloroethane) 
106-93-4 
Ethylene dibromide (Dibromoethane)
107-06-2 
Ethylene dichloride 
(1,2-Dichloroethane) 
107-21-1 
Ethylene glycol 
151-56-4 
Ethylene imine (Aziridine) 
75-21-8 
Ethylene oxide 
96-45-7 
Ethylene thiourea 
75-34-3 
Ethylidene dichloride 
(1,1-Dichloroethane) 
50-00-0 
Formaldehyde 
76-44-8 
Heptachlor 
55

CAS No. 
Chemical Name 
118-74-1 
Hexachlorobenzene 
87-68-3 
Hexachlorobutadiene 
77-47-4 
Hexachlorocyclopentadiene 
67-72-1 
Hexachloroethane 
822-06-0 
Hexamethylene-1,6-diisocyanate 
680-31-9 
Hexamethylphosphoramide 
110-54-3 
Hexane 
302-01-2 
Hydrazine 
7647-01-0 
Hydrochloric acid 
7664-39-3 
Hydrogen fluoride (Hydrofluoric 
acid) 
123-31-9 
Hydroquinone 
78-59-1 
Isophorone 
58-89-9 
Lindane (all isomers) 
108-31-6 
Maleic anhydride 
67-56-1 
Methanol 
72-43-5 
Methoxychlor 
74-83-9 
Methyl bromide (Bromomethane) 
74-87-3 
Methyl chloride (Chloromethane) 
71-55-6 
Methyl chloroform 
(1,1,1-Trichloroethane) 
60-34-4 
Methyl hydrazine 
74-88-4 
Methyl iodide (Iodomethane) 
108-10-1 
Methyl isobutyl ketone (Hexone) 
624-83-9 
Methyl isocyanate 
80-62-6 
Methyl methacrylate 
1634-04-4 
Methyl tert butyl ether 
101-14-4 
4,4-Methylene bis (2-chloroaniline) 
75-09-2 
Methylene chloride 
(Dichloromethane) 
101-68-8 
Methylene diphenyl diisocyanate 
(MDI) 
101-77-9 
4,4’-Methylenedianiline 
91-20-3 
Naphthalene 
98-95-3 
Nitrobenzene 
92-93-3 
4-Nitrobiphenyl 
100-02-7 
4-Nitrophenol 
79-46-9 
2-Nitropropane 
684-93-5 
N-Nitroso-N-methylurea 
62-75-9 
N-Nitrosodimethylamine 
59-89-2 
N-Nitrosomorpholine 
56-38-2 
Parathion 
82-68-8 
Pentachloronitrobenzene 
(Quintobenzene) 
87-86-5 
Pentachlorophenol 
108-95-2 
Phenol 
106-50-3 
p-Phenylenediamine 
CAS No. 
Chemical Name 
75-44-5 
Phosgene 
7803-51-2 
Phosphine 
7723-14-0 
Phosphorus 
85-44-9 
Phthalic anhydride 
1336-36-3 
Polychlorinated biphenyls (Aroclors) 
1120-71-4 
1,3-Propane sultone 
57-57-8 
beta-Propiolactone 
123-38-6 
Propionaldehyde 
114-26-1 
Propoxur (Baygon) 
78-87-5 
Propylene dichloride 
(1,2-Dichloropropane) 
75-56-9 
Propylene oxide 
75-55-8 
1,2-Propylenimine (2-Methylaziridine)
91-22-5 
Quinoline 
106-51-4 
Quinone 
100-42-5 
Styrene 
96-09-3 
Styrene oxide 
1746-01-6 
2,3,7,8-Tetrachlorodibenzo-p-dioxin 
79-34-5 
1,1,2,2-Tetrachloroethane 
127-18-4 
Tetrachloroethylene 
(Perchloroethylene) 
7550-45-0 
Titanium tetrachloride 
108-88-3 
Toluene 
95-80-7 
2,4-Toluene diamine 
584-84-9 
2,4-Toluene diisocyanate 
95-53-4 
o-Toluidine 
8001-35-2 
Toxaphene (chlorinated camphene) 
120-82-1 
1,2,4-Trichlorobenzene 
79-00-5 
1,1,2-Trichloroethane 
79-01-6 
Trichloroethylene 
95-95-4 
2,4,5-Trichlorophenol 
88-06-2 
2,4,6-Trichlorophenol 
121-44-8 
Triethylamine 
1582-09-8 
Trifluralin 
540-84-1 
2,2,4-Trimethylpentane 
108-05-4 
Vinyl acetate 
593-60-2 
Vinyl bromide 
75-01-4 
Vinyl chloride 
75-35-4 
Vinylidene chloride 
(1,1-Dichloroethylene) 
1330-20-7 
Xylenes (isomers and mixture) 
95-47-6 
o-Xylenes 
108-38-3 
m-Xylenes 
106-42-3 
p-Xylenes 
0 
Antimony Compounds 
0 
Arsenic Compounds inorganic 
including arsine) 
56

CAS No. 
Chemical Name 
0
Beryllium Compounds
0
Cadmium Compounds
0
Chromium Compounds
0
Cobalt Compounds
0 
Coke Oven Emissions 
0
Cyanide Compounds[1] 
0
Glycol ethers[2] 
0
Lead Compounds
CAS No. 
Chemical Name 
0
Manganese Compounds
0
Mercury Compounds
0 
Fine mineral fibers[3] 
0
Nickel Compounds
0 
Polycyclic Organic Matter[4] 
0 
Radionuclides (including radon)[5] 
0
Selenium Compounds
B. 
The following applies for all listings above which contain the word "compounds” or are 
glycol ethers: unless otherwise specified, these listings are defined as including any unique 
chemical substance that contains the named chemical (i.e., antimony, arsenic, etc.) as part of 
that chemical's infrastructure. 
1.
X'CN where X = H' or any other group where a formal dissociation may occur (e.g.
KCN or Ca(CN)2).
2. 
a. Includes mono- and di- ethers of ethylene glycol, diethylene glycol, and
triethylene glycol R-(OCH2CH2)n-OR' where: 
n = 1, 2, or 3; 
R = alkyl C7 or less; or 
R = phenyl or alkyl substituted phenyl; 
R' = H or alkyl C7 or less; or 
OR' consisting of carboxylic acid ester, sulfate, phosphate, nitrate, or sulfonate. 
b. Glycol ethers do not include ethylene glycol monobutyl ether (EGBE, 2-
Butoxyethanol) (CAS No. 111-76-2).
3.
Includes mineral fiber emissions from facilities manufacturing or processing glass,
rock, or slag fibers (or other mineral derived fibers) of average diameter one
micrometer (1µ) or less.
4.
Includes organic compounds which have more than one benzene ring and which
have a boiling point greater than or equal to 212 ºF (100 ºC).
5.
A type of atom which spontaneously undergoes radioactive decay.
57

MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 371 
ACID RAIN 
INDEX 
SECTION 100 – GENERAL 
101 
PURPOSE 
102 
APPLICABILITY 
103 
SEVERABILITY 
104 
AVAILABILITY OF INFORMATION 
105 
104 
FEDERAL DELEGATION AUTHORITY 
SECTION 200 – DEFINITIONS (NOT APPLICABLE) 
SECTION 300 – STANDARDS 
301 
INCORPORATED SUBPARTS OF THE FEDERAL ACID RAIN 
REGULATIONS 
302 
FEDERAL REGULATORY REVISIONS 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE)
Draft Rule 371 - Strikethrough and Underline Version
Return to list of attachments
58

Adopted 02/15/1995; Revised 04/03/1996; Revised 03/01/2000; Revised 03/07/2001; Revised 
11/19/2003; Revised 03/15/2006; Revised 12/17/2008; Revised 09/16/2009; Revised 07/07/2010; 
Revised 08/17/2011; Revised 07/25/2012; Revised 03/26/2014; Revised 11/05/2014; Revised 
11/18/2015; Revised 11/02/2016; Revised 12/13/2017; Revised 11/07/2018; Revised 10/23/2019; 
and Revised 11/18/2020; and Revised DD/MM/YYYY 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 371 
ACID RAIN 
SECTION 100 – GENERAL 
101 
PURPOSE: To incorporate by reference the Acid Rain federal regulations in order to 
obtain delegated authority to enforce portions of the Clean Air Act Amendments of 1990 
(CAAA). 
102 
APPLICABILITY: This rule applies to those affected units as described in 40 CFR 72.6 
which has been adopted by reference and no future additions or amendments. Any such 
stationary source must also comply with other Maricopa County Air Pollution Control 
Regulations. 
103 
SEVERABILITY: If the provisions or requirements of the regulations incorporated 
pursuant to this rule conflict with any of the remaining portions of these rules, the 
regulations incorporated pursuant to this rule shall apply and shall take precedence. 
104 
AVAILABILITY OF INFORMATION: Copies of 40 CFR Part 72 (Permits Regulation), 40 
CFR Part 74 (Sulfur Dioxide Opt-Ins), 40 CFR Part 75 (Continuous Emission Monitoring), 
and 40 CFR 76 (Acid Rain Nitrogen Oxides Emission Reduction Program) and all 
accompanying appendices currently enforced by the Maricopa County Air Quality 
Department (MCAQD) are available as listed: 
a.
Maricopa County Air Quality Department
b. Maricopa County Rules are available electronically at
https://www.maricopa.gov/1951/Adopted-Rules 
c.
EPA documents are available electronically at https://www.ecfr.gov/cgi-bin/text-
idx?SID=3e92ce0bdd77277b5f6e386319a9b84e&mc=true&tpl=/ecfrbrowse/Title40/4
0tab_02.tpl 
d. ASTM standards are available from ASTM International, 100 Barr Harbor Drive, P.O.
Box C700, West Conshohocken, PA 19428, or from its website at www.astm.org 
105 
104 
FEDERAL DELEGATION AUTHORITY: The MCAQD shall enforce the Federal 
Acid Rain Regulations which have been delegated to the County by the United States 
Environmental Protection Agency (EPA) for such enforcement. The MCAQD may, in 
addition, enforce such other Acid Rain Rules as delegated for such enforcement by the EPA 
to the MCAQD. 
59

SECTION 200 – DEFINITIONS: See Rule 100 (General Provisions and Definitions) of these 
rules for definitions of terms that are used but not specifically defined in this rule. 
SECTION 300 – STANDARDS 
301 
INCORPORATED SUBPARTS OF THE FEDERAL ACID RAIN REGULA-
TIONS: The following federal regulations located in the U.S. Code of Federal Regulations, 
Title 40, Subchapter C (CFR) as codified on July 1, 2020 2021, are herein incorporated by 
reference in Maricopa County’s Air Pollution Control Regulations. This incorporation by 
reference includes no future editions or amendments. Each owner or operator subject to the 
requirements of the following subparts shall comply with the requirements of those subparts 
and the additional requirements set forth herein. Incorporation by reference does not 
include nondelegable functions of the EPA Administrator. 
a. 40 CFR Part 72—Permits Regulation
b. 40 CFR Part 74—Sulfur Dioxide Opt-Ins
c. 40 CFR Part 75—Continuous Emission Monitoring
d. 40 CFR Part 76—Acid Rain Nitrogen Oxides Emission Reduction Program
302 
FEDERAL REGULATORY REVISIONS: The Maricopa County Board of Supervisors 
shall take action following promulgation by the Environmental Protection Agency (EPA) of 
regulations implementing Section 407 and Section 410 of the Clean Air Act (CAA), or 
revising either Part 72, 74, 75, and/or 76 of the regulations implementing Section 407 or 
Section 410 of the CAA, to either incorporate such new or revised provisions by reference 
or to submit, for the EPA approval, the Maricopa County Air Pollution Control Regulations 
implementing these provisions. 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE) 
60

MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 371 
ACID RAIN 
INDEX 
SECTION 100 – GENERAL 
101 
PURPOSE 
102 
APPLICABILITY 
103 
SEVERABILITY 
104 
FEDERAL DELEGATION AUTHORITY 
SECTION 200 – DEFINITIONS (NOT APPLICABLE) 
SECTION 300 – STANDARDS 
301 
INCORPORATED SUBPARTS OF THE FEDERAL ACID RAIN 
REGULATIONS 
302 
FEDERAL REGULATORY REVISIONS 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE)
Draft Rule 371 - Clean Version
Return to list of attachments
61

Adopted 02/15/1995; Revised 04/03/1996; Revised 03/01/2000; Revised 03/07/2001; Revised 
11/19/2003; Revised 03/15/2006; Revised 12/17/2008; Revised 09/16/2009; Revised 07/07/2010; 
Revised 08/17/2011; Revised 07/25/2012; Revised 03/26/2014; Revised 11/05/2014; Revised 
11/18/2015; Revised 11/02/2016; Revised 12/13/2017; Revised 11/07/2018; Revised 10/23/2019; 
Revised 11/18/2020; and Revised 10/20/2021 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
REGULATION III – CONTROL OF AIR CONTAMINANTS 
RULE 371 
ACID RAIN 
SECTION 100 – GENERAL 
101 
PURPOSE: To incorporate by reference the Acid Rain federal regulations in order to 
obtain delegated authority to enforce portions of the Clean Air Act Amendments of 1990 
(CAAA). 
102 
APPLICABILITY: This rule applies to those affected units as described in 40 CFR 72.6 
which has been adopted by reference and no future additions or amendments. Any such 
stationary source must also comply with other Maricopa County Air Pollution Control 
Regulations. 
103 
SEVERABILITY: If the provisions or requirements of the regulations incorporated 
pursuant to this rule conflict with any of the remaining portions of these rules, the 
regulations incorporated pursuant to this rule shall apply and shall take precedence. 
104 
FEDERAL DELEGATION AUTHORITY: The MCAQD shall enforce the Federal 
Acid Rain Regulations which have been delegated to the County by the United States 
Environmental Protection Agency (EPA) for such enforcement. The MCAQD may, in 
addition, enforce such other Acid Rain Rules as delegated for such enforcement by the EPA 
to the MCAQD. 
SECTION 200 – DEFINITIONS: See Rule 100 (General Provisions and Definitions) of these 
rules for definitions of terms that are used but not specifically defined in this rule. 
SECTION 300 – STANDARDS 
301 
INCORPORATED SUBPARTS OF THE FEDERAL ACID RAIN REGULA-
TIONS: The following federal regulations located in the U.S. Code of Federal Regulations, 
Title 40, Subchapter C (CFR) as codified on July 1,  2021, are herein incorporated by 
reference in Maricopa County’s Air Pollution Control Regulations. This incorporation by 
reference includes no future editions or amendments. Each owner or operator subject to the 
requirements of the following subparts shall comply with the requirements of those subparts 
and the additional requirements set forth herein. Incorporation by reference does not 
include nondelegable functions of the EPA Administrator. 
a. 40 CFR Part 72—Permits Regulation
62

b. 40 CFR Part 74—Sulfur Dioxide Opt-Ins
c. 40 CFR Part 75—Continuous Emission Monitoring
d. 40 CFR Part 76—Acid Rain Nitrogen Oxides Emission Reduction Program
302 
FEDERAL REGULATORY REVISIONS: The Maricopa County Board of Supervisors 
shall take action following promulgation by the Environmental Protection Agency (EPA) of 
regulations implementing Section 407 and Section 410 of the Clean Air Act (CAA), or 
revising either Part 72, 74, 75, and/or 76 of the regulations implementing Section 407 or 
Section 410 of the CAA, to either incorporate such new or revised provisions by reference 
or to submit, for the EPA approval, the Maricopa County Air Pollution Control Regulations 
implementing these provisions. 
SECTION 400 – ADMINISTRATIVE REQUIREMENTS (NOT APPLICABLE) 
SECTION 500 – MONITORING AND RECORDS (NOT APPLICABLE) 
63

Adopted 03/15/2006; Revised 12/17/2008; Revised 09/16/2009; Revised 07/07/2010; Revised 
08/17/2011; Revised 07/25/2012; Revised 09/25/2013; Revised 03/26/2014; Revised 11/05/2014; 
Revised 11/18/2015; Revised 11/02/2016; Revised 12/13/2017; Revised 11/07/2018; Revised 
10/23/2019; and Revised 11/18/2020; and Revised MM/DD/YYYY 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
APPENDIX G 
Incorporated Materials 
1.
The following federal regulations located in the U.S. Code of Federal Regulations, Title 40,
Subchapter C (CFR) as codified on July 1, 2020 2021, are herein incorporated by reference in
Maricopa County’s Air Pollution Control Regulations. This incorporation by reference
includes no future editions or amendments. Each owner or operator subject to the
requirements of the following subparts shall comply with the requirements of those subparts
and the additional requirements set forth herein. Incorporation by reference does not
include nondelegable functions of the EPA Administrator.
a. 40 CFR Part 50-National Primary and Secondary Ambient Air Quality Standards
b. The following appendices to 40 CFR Part 51:
1.
Appendix A to Subpart A of Part 51-Table 2A: Facility Inventory Data Elements for
Reporting Emissions From Point Sources, Where Required by 40 CFR 51.30
2. Appendix M to Part 51-Recommended Test Methods for State Implementation
Plans
3. Appendix S to Part 51, Section IV-Sources That Would Locate in a Designated
Nonattainment Area
4. Appendix W to Part 51-Guideline on Air Quality Models
c. The following appendices to 40 CFR Part 52:
1.
Appendix D to Part 52-Determination of Sulfur Dioxide Emissions From Stationary
Sources by Continuous Monitors
2. Appendix E to Part 52-Performance Specifications and Specification Test
Procedures for Monitoring Systems for Effluent Stream Gas Volumetric Flow Rate
d. 40 CFR Part 53-Ambient Air Monitoring Reference and Equivalent Methods
e. 40 CFR Part 58-Ambient Air Quality Surveillance
f.
The following appendices to 40 CFR Part 60-Standards of Performance for New
Stationary Sources:
1.
Appendix A-1 to Part 60—Test Methods 1 through 2F
2. Appendix A-2 to Part 60—Test Methods 2G through 3C
3. Appendix A-3 to Part 60—Test Methods 4 through 5I
4. Appendix A-4 to Part 60—Test Methods 6 through 10B
Draft Apendix G - Strikethrough and Underline Version
Return to list of attachment
64

5. Appendix A-5 to Part 60—Test Methods 11 through 15A
6. Appendix A-6 to Part 60—Test Methods 16 through 18
7. Appendix A-7 to Part 60—Test Methods 19 through 25E
8. Appendix A-8 to Part 60—Test Methods 26 through 30B
9. Appendix B to Part 60—Performance Specifications
10. Appendix C to Part 60—Determination of Emission Rate Change
11. Appendix D to Part 60—Required Emission Inventory Information
12. Appendix F to Part 60—Quality Assurance Procedures
g. The following appendices to 40 CFR Part 61—National Emission Standards for
Hazardous Air Pollutants:
1.
Appendix A to Part 61—National Emission Standards for Hazardous Air Pollutants
Compliance Status Information
2. Appendix B to Part 61—Test Methods
3. Appendix C to Part 61—Quality Assurance Procedures
h. The following appendices to 40 CFR Part 63—National Emission Standards for
Hazardous Air Pollutants for Source Categories:
1.
Appendix A to Part 63—Test Methods Pollutant Measurement Methods from
Various Waste Media
2. Appendix C to Part 63—Determination of the Fraction Biodegraded (Fbio) in a
Biological Treatment Unit
3. Appendix E to Part 63—Monitoring Procedure for Nonthoroughly Mixed Open
Biological Treatment Systems at Kraft Pulp Mills Under Unsafe Sampling
Conditions
2.
The following are federally listed non-precursor organic compounds, organic compounds 
which have been determined to have negligible photochemical reactivity as listed in 40 CFR 
51.100(s). This list is incorporated by reference as of July 1, 2020 2021, and no future 
editions or amendments:
CAS 
NUMBER 
COMPOUND NAME 
1615-75-4 1 chloro-1-fluoroethane (HCFC-151a) 
163702-07-6 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxy-butane (C4F9OCH3 or HFE-7100) 
375-03-1 1,1,1,2,2,3,3-heptafluoro-3-methoxy-propane (n-C3F7OCH3, HFE-7000) 
132182-92-4 1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-trifluoromethyl-pentane (HFE-7300) 
431-89-0 1,1,1,2,3,3,3-heptafluoropropane (HFC 227ea) 
431-63-0 1,1,1,2,3,3-hexafluoropropane (HFC-236ea) 
138495-42-8 1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC 43-10mee) 
431-31-2 1,1,1,2,3-pentafluoropropane (HFC-245eb) 
811-97-2 1,1,1,2-tetrafluoroethane (HFC-134a) 
690-39-1 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) 
65

CAS 
NUMBER 
COMPOUND NAME 
406-58-6 1,1,1,3,3-pentafluorobutane (HFC-365mfc) 
460-73-1 1,1,1,3,3-pentafluoropropane (HFC-245fa) 
71-55-6 1,1,1-trichloroethane (methyl chloroform) 
306-83-2 1,1,1-trifluoro 2,2-dichloroethane (HCFC-123) 
420-46-2 1,1,1-trifluoroethane (HFC-143a) 
679-86-7 1,1,2,2,3-pentafluoropropane (HFC-245ca) 
359-35-3 1,1,2,2-tetrafluoroethane (HFC-134) 
406-78-0 1,1,2,2-Tetrafluoro-1-(2,2,2-trifluoroethoxy) ethane (HFE-347pcf2) 
24270-66-4 1,1,2,3,3-pentafluoropropane (HFC-245ea) 
76-13-1 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) 
1717-00-6 1,1-dichloro 1-fluoroethane (HCFC-141b) 
75-34-3 1,1-difluoroethane (HFC-152a) 
76-14-2 1,2-dichloro 1,1,2,2-tetrafluoroethane (CFC-114) 
354-23-4 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a) 
507-55-1 1,3-dichloro-1,1,2,2,3-pentafluoropropane (HCFC-225cb) 
75-68-3 1-chloro 1,1-difluoroethane (HCFC-142b) 
163702-05-4 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane (C4F9OC2H5 or HFE-7200) 
124-68-5 2-amino-2- methyl-1-propanol (AMP) 
163702-08-7 2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoropropane ((CF3)2CFCF2OCH3) 
163702-06-5 2-(ethoxydifluoromethyl)-1,1,1,2,3,3,3-heptafluoropropane ((CF3)2CFCF2OC2H5) 
754-12-1 2,3,3,3-tetrafluoropropene 
2837-89-0 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124) 
422-56-0 3,3-dichloro-1,1,1,2,2-pentafluoropropane (HCFC-225ca) 
297730-93-9 3-ethoxy- 1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-(trifluoromethyl) hexane (HFE-7500)
67-64-1 acetone 
75-45-6 chlorodifluoromethane (HCFC-22) 
593-70-4 chlorofluoromethane (HCFC-31) 
76-15-3 chloropentafluoroethane (CFC-115) 
692–49–9 cis-1,1,1,4,4,4-hexafluorobut-2-ene (HFO–1336mzz-Z) 
0 cyclic, branched, or linear completely methylated siloxanes 
75-71-8 dichlorodifluoromethane (CFC-12) 
95508-16-0 difluoromethane (HFC-32) 
616-38-6 dimethyl carbonate 
74-84-0 ethane 
95508-16-0 ethylfluoride (HFC-161) 
188690-78-0 HCF2OCF2CF2OCF2H (HFE-338pcc13) 
1691-17-4 HCF2OCF2H (HFE-134) 
188690-77-9 HCF2OCF2OCF2CF2OCF2H (H-Galden 1040x or H-Galden ZT 130 (or 150 or 180))
78522-47-1 HCF2OCF2OCF2H (HFE-236cal2) 
72-84-8 methane 
79-20-9 methyl acetate 
107-33-3 methyl formate (HCOOCH3) 
66

CAS 
NUMBER 
COMPOUND NAME 
75-09-2 methylene chloride (dichloromethane) 
98-56-6 parachlorobenzotrifluoride (PCBTF) 
354-33-6 pentafluoroethane (HFC-125) 
127-18-4 perchloroethylene (tetrachloroethylene) 
108-32-7 propylene carbonate 
102687-65-0 trans 1-chloro-3,3,3-trifluoroprop-1-ene (SolsticeTM 1233zd(E)) 
540-88-5 t-Butyl Acetate (TBAC) 
29118-24-9 trans-1,3,3,3-tetrafluoropropene 
75-69-4 trichlorofluoromethane (CFC-11) 
75-46-7 trifluoromethane (HFC-23) 
0 perfluorocarbon compounds which fall into these classes: 
(i) Cyclic, branched, or linear, completely fluorinated alkanes; 
(ii) Cyclic, branched, or linear, completely fluorinated ethers with no unsaturations; 
(iii) Cyclic, branched, or linear, completely fluorinated tertiary amines with no 
unsaturations; and 
(iv) Sulfur containing perfluorocarbons with no unsaturations and with sulfur bonds 
only to carbon and fluorine. 
3.
The following documents are incorporated by reference and are approved for use as directed
by the Maricopa County Air Quality Department under the Maricopa County Air Pollution
Control Regulations. These documents are incorporated by reference as of the year specified
below, and no future editions or amendments.
a. Section 1 and Section 7 of the Arizona Department of Environmental Quality's (ADEQ)
“Arizona Testing Manual for Air Pollutant Emissions,” amended as of March 1992, and
no future editions or amendments.
b. The U.S. Government Printing Office's “Standard Industrial Classification Manual,
1987”, published by the Executive Office of the President, Office of Management and
Budget, and no future editions or amendments.
c. EPA Publication No. AP-42, 1995, “Compilation of Air Pollutant Emission Factors,”
Volume I: Stationary Point and Area Sources, Fifth Edition, including Supplements A, B,
C, D, E, F, updates as of July 1, 2020 2021, and no future editions or amendments.
d. EPA guidance document “Guidelines for Determining Capture Efficiency”, January 9,
1995, and no future editions or amendments.
e. 2017 US NAICS Manual “North American Industry Classification System, United States,
2017”, published by the Executive Office of the President, Office of Management and
Budget, and no future editions or amendments.
4.
Availability of Information: Incorporated materials are available as listed:
a. Maricopa County Air Quality Department
b. Maricopa County Rules are available electronically at
https://www.maricopa.gov/1951/Adopted-Rules 
67

c. EPA documents are available electronically at https://www.ecfr.gov/cgi-bin/text-
idx?SID=3e92ce0bdd77277b5f6e386319a9b84e&mc=true&tpl=/ecfrbrowse/Title40/4
0tab_02.tpl 
d. ASTM standards are available from ASTM International, 100 Barr Harbor Drive, P.O.
Box C700, West Conshohocken, PA 19428, or from its website at www.astm.org. 
e. The 2017 NAICS Manual is available electronically at
https://www.census.gov/eos/www/naics/2017NAICS/2017_NAICS_Manual.pdf 
68

Adopted 03/15/2006; Revised 12/17/2008; Revised 09/16/2009; Revised 07/07/2010; Revised 
08/17/2011; Revised 07/25/2012; Revised 09/25/2013; Revised 03/26/2014; Revised 11/05/2014; 
Revised 11/18/2015; Revised 11/02/2016; Revised 12/13/2017; Revised 11/07/2018; Revised 
10/23/2019; Revised 11/18/2020; and Revised 10/20/2021 
MARICOPA COUNTY 
AIR POLLUTION CONTROL REGULATIONS 
APPENDIX G 
Incorporated Materials 
1.
The following federal regulations located in the U.S. Code of Federal Regulations, Title 40,
Subchapter C (CFR) as codified on July 1,  2021, are herein incorporated by reference in
Maricopa County’s Air Pollution Control Regulations. This incorporation by reference
includes no future editions or amendments. Each owner or operator subject to the
requirements of the following subparts shall comply with the requirements of those subparts
and the additional requirements set forth herein. Incorporation by reference does not
include nondelegable functions of the EPA Administrator.
a. 40 CFR Part 50-National Primary and Secondary Ambient Air Quality Standards
b. The following appendices to 40 CFR Part 51:
1.
Appendix A to Subpart A of Part 51-Table 2A: Facility Inventory Data Elements for
Reporting Emissions From Point Sources, Where Required by 40 CFR 51.30
2. Appendix M to Part 51-Recommended Test Methods for State Implementation
Plans
3. Appendix S to Part 51, Section IV-Sources That Would Locate in a Designated
Nonattainment Area
4. Appendix W to Part 51-Guideline on Air Quality Models
c. The following appendices to 40 CFR Part 52:
1.
Appendix D to Part 52-Determination of Sulfur Dioxide Emissions From Stationary
Sources by Continuous Monitors
2. Appendix E to Part 52-Performance Specifications and Specification Test
Procedures for Monitoring Systems for Effluent Stream Gas Volumetric Flow Rate
d. 40 CFR Part 53-Ambient Air Monitoring Reference and Equivalent Methods
e. 40 CFR Part 58-Ambient Air Quality Surveillance
f.
The following appendices to 40 CFR Part 60-Standards of Performance for New
Stationary Sources:
1.
Appendix A-1 to Part 60—Test Methods 1 through 2F
2. Appendix A-2 to Part 60—Test Methods 2G through 3C
3. Appendix A-3 to Part 60—Test Methods 4 through 5I
4. Appendix A-4 to Part 60—Test Methods 6 through 10B
Draft Appendix G - Clean Version
Return to list of attachment
69

5. Appendix A-5 to Part 60—Test Methods 11 through 15A
6. Appendix A-6 to Part 60—Test Methods 16 through 18
7. Appendix A-7 to Part 60—Test Methods 19 through 25E
8. Appendix A-8 to Part 60—Test Methods 26 through 30B
9. Appendix B to Part 60—Performance Specifications
10. Appendix C to Part 60—Determination of Emission Rate Change
11. Appendix D to Part 60—Required Emission Inventory Information
12. Appendix F to Part 60—Quality Assurance Procedures
g. The following appendices to 40 CFR Part 61—National Emission Standards for
Hazardous Air Pollutants:
1.
Appendix A to Part 61—National Emission Standards for Hazardous Air Pollutants
Compliance Status Information
2. Appendix B to Part 61—Test Methods
3. Appendix C to Part 61—Quality Assurance Procedures
h. The following appendices to 40 CFR Part 63—National Emission Standards for
Hazardous Air Pollutants for Source Categories:
1.
Appendix A to Part 63—Test Methods Pollutant Measurement Methods from
Various Waste Media
2. Appendix C to Part 63—Determination of the Fraction Biodegraded (Fbio) in a
Biological Treatment Unit
3. Appendix E to Part 63—Monitoring Procedure for Nonthoroughly Mixed Open
Biological Treatment Systems at Kraft Pulp Mills Under Unsafe Sampling
Conditions
2.
The following are federally listed non-precursor organic compounds, organic compounds 
which have been determined to have negligible photochemical reactivity as listed in 40 CFR 
51.100(s). This list is incorporated by reference as of July 1, 2021, and no future editions or 
amendments:
CAS 
NUMBER 
COMPOUND NAME 
1615-75-4 1 chloro-1-fluoroethane (HCFC-151a) 
163702-07-6 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxy-butane (C4F9OCH3 or HFE-7100) 
375-03-1 1,1,1,2,2,3,3-heptafluoro-3-methoxy-propane (n-C3F7OCH3, HFE-7000) 
132182-92-4 1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-trifluoromethyl-pentane (HFE-7300) 
431-89-0 1,1,1,2,3,3,3-heptafluoropropane (HFC 227ea) 
431-63-0 1,1,1,2,3,3-hexafluoropropane (HFC-236ea) 
138495-42-8 1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC 43-10mee) 
431-31-2 1,1,1,2,3-pentafluoropropane (HFC-245eb) 
811-97-2 1,1,1,2-tetrafluoroethane (HFC-134a) 
690-39-1 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) 
70

CAS 
NUMBER 
COMPOUND NAME 
406-58-6 1,1,1,3,3-pentafluorobutane (HFC-365mfc) 
460-73-1 1,1,1,3,3-pentafluoropropane (HFC-245fa) 
71-55-6 1,1,1-trichloroethane (methyl chloroform) 
306-83-2 1,1,1-trifluoro 2,2-dichloroethane (HCFC-123) 
420-46-2 1,1,1-trifluoroethane (HFC-143a) 
679-86-7 1,1,2,2,3-pentafluoropropane (HFC-245ca) 
359-35-3 1,1,2,2-tetrafluoroethane (HFC-134) 
406-78-0 1,1,2,2-Tetrafluoro-1-(2,2,2-trifluoroethoxy) ethane (HFE-347pcf2) 
24270-66-4 1,1,2,3,3-pentafluoropropane (HFC-245ea) 
76-13-1 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) 
1717-00-6 1,1-dichloro 1-fluoroethane (HCFC-141b) 
75-34-3 1,1-difluoroethane (HFC-152a) 
76-14-2 1,2-dichloro 1,1,2,2-tetrafluoroethane (CFC-114) 
354-23-4 1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a) 
507-55-1 1,3-dichloro-1,1,2,2,3-pentafluoropropane (HCFC-225cb) 
75-68-3 1-chloro 1,1-difluoroethane (HCFC-142b) 
163702-05-4 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane (C4F9OC2H5 or HFE-7200) 
124-68-5 2-amino-2- methyl-1-propanol (AMP) 
163702-08-7 2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoropropane ((CF3)2CFCF2OCH3) 
163702-06-5 2-(ethoxydifluoromethyl)-1,1,1,2,3,3,3-heptafluoropropane ((CF3)2CFCF2OC2H5) 
754-12-1 2,3,3,3-tetrafluoropropene 
2837-89-0 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124) 
422-56-0 3,3-dichloro-1,1,1,2,2-pentafluoropropane (HCFC-225ca) 
297730-93-9 3-ethoxy- 1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-(trifluoromethyl) hexane (HFE-7500)
67-64-1 acetone 
75-45-6 chlorodifluoromethane (HCFC-22) 
593-70-4 chlorofluoromethane (HCFC-31) 
76-15-3 chloropentafluoroethane (CFC-115) 
692–49–9 cis-1,1,1,4,4,4-hexafluorobut-2-ene (HFO–1336mzz-Z) 
0 cyclic, branched, or linear completely methylated siloxanes 
75-71-8 dichlorodifluoromethane (CFC-12) 
95508-16-0 difluoromethane (HFC-32) 
616-38-6 dimethyl carbonate 
74-84-0 ethane 
95508-16-0 ethylfluoride (HFC-161) 
188690-78-0 HCF2OCF2CF2OCF2H (HFE-338pcc13) 
1691-17-4 HCF2OCF2H (HFE-134) 
188690-77-9 HCF2OCF2OCF2CF2OCF2H (H-Galden 1040x or H-Galden ZT 130 (or 150 or 180))
78522-47-1 HCF2OCF2OCF2H (HFE-236cal2) 
72-84-8 methane 
79-20-9 methyl acetate 
107-33-3 methyl formate (HCOOCH3) 
71

CAS 
NUMBER 
COMPOUND NAME 
75-09-2 methylene chloride (dichloromethane) 
98-56-6 parachlorobenzotrifluoride (PCBTF) 
354-33-6 pentafluoroethane (HFC-125) 
127-18-4 perchloroethylene (tetrachloroethylene) 
108-32-7 propylene carbonate 
102687-65-0 trans 1-chloro-3,3,3-trifluoroprop-1-ene (SolsticeTM 1233zd(E)) 
540-88-5 t-Butyl Acetate (TBAC) 
29118-24-9 trans-1,3,3,3-tetrafluoropropene 
75-69-4 trichlorofluoromethane (CFC-11) 
75-46-7 trifluoromethane (HFC-23) 
0 perfluorocarbon compounds which fall into these classes: 
(i) Cyclic, branched, or linear, completely fluorinated alkanes; 
(ii) Cyclic, branched, or linear, completely fluorinated ethers with no unsaturations; 
(iii) Cyclic, branched, or linear, completely fluorinated tertiary amines with no 
unsaturations; and 
(iv) Sulfur containing perfluorocarbons with no unsaturations and with sulfur bonds 
only to carbon and fluorine. 
3.
The following documents are incorporated by reference and are approved for use as directed
by the Maricopa County Air Quality Department under the Maricopa County Air Pollution
Control Regulations. These documents are incorporated by reference as of the year specified
below, and no future editions or amendments.
a. Section 1 and Section 7 of the Arizona Department of Environmental Quality's (ADEQ)
“Arizona Testing Manual for Air Pollutant Emissions,” amended as of March 1992, and
no future editions or amendments.
b. The U.S. Government Printing Office's “Standard Industrial Classification Manual,
1987”, published by the Executive Office of the President, Office of Management and
Budget, and no future editions or amendments.
c. EPA Publication No. AP-42, 1995, “Compilation of Air Pollutant Emission Factors,”
Volume I: Stationary Point and Area Sources, Fifth Edition, including Supplements A, B,
C, D, E, F, updates as of July 1,  2021, and no future editions or amendments.
d. EPA guidance document “Guidelines for Determining Capture Efficiency”, January 9,
1995, and no future editions or amendments.
e. 2017 US NAICS Manual “North American Industry Classification System, United States,
2017”, published by the Executive Office of the President, Office of Management and
Budget, and no future editions or amendments.
72