# Antelope Valley Air Quality Management District

Final 

# Staff Report

Amendment of 

# Rule 1124 – Aerospace Assembly and Component

Manufacturing Operations

Adopted on August 20, 2013

43301 D IVISION 

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Final Staff Report, 09/20/13 

### STAFF REPORT TABLE OF CONTENTS Rule 1124 – Aerospace Assembly and Component Manufacturing Oper ations

I. PURPOSE OF STAFF REPORT ..................

................................................... ...................... 1

II. EXECUTIVE SUMMARY ........................

................................................... ......................... 1

III. STAFF RECOMMENDATION .....................

................................................... .................... 2

IV. LEGAL REQUIREMENTS CHECKLIST .............

................................................... .......... 3

V. DISCUSSION OF LEGAL REQUIREMENTS .........

................................................... ....... 4

A. REQUIRED ELEMENTS/FINDINGS .................

................................................... ...... 4 1. State Findings Required for Adoption of Rule s & Regulations ...................... 4 a. Necessity ..................................

................................................... ......... 4 b. Authority ..................................

................................................... ......... 4 c. Clarity ....................................

................................................... ........... 4 d. Consistency ................................

................................................... ....... 4 e. Non-duplication ............................

................................................... .... 4 f. Reference ..................................

................................................... ......... 4 g. Public Notice & Comment, Public Hearing .... .................................... 5 2. Federal Elements (SIP Submittals, Other Fede ral Submittals) ........................ 5 a. Satisfaction of Underlying Federal Requireme nts ............................... 5 b. Public Notice and Comment .................. .............................................. 5 c. Availability of Document ................... ................................................. 5 d. Notice to Specified Entities ...............

.................................................. 6 e. Public Hearing ..............................

................................................... ..... 6 f. Legal Authority to Adopt and Implement ..... ....................................... 6 g. Applicable State Laws and Regulations Were F ollowed .................... 6

B. WRITTEN ANALYSIS OF EXISTING REQUIREMENTS .. ...................................... 6

C. ECONOMIC ANALYSIS ..........................

................................................... ................. 7 1. General ....................................

................................................... ...................... 7 2. Incremental Cost Effectiveness ............

................................................... ....... 7

D. ENVIRONMENTAL ANALYSIS (CEQA) ..............

................................................... . 7

E. SUPPLEMENTAL ENVIRONMENTAL ANALYSIS ........ ......................................... 8 1. Potential Environmental Impacts ............

................................................... ...... 8 2. Mitigation of Impacts ......................

................................................... ............. 8 3. Alternative Methods of Compliance ..........

................................................... ... 8TC

- 2 AVAQMD Rule 1124 Final Staff Report, 09/20/13 F. PUBLIC REVIEW ..............................

................................................... ......................... 8

VI. TECHNICAL DISCUSSION .....................

................................................... ....................... 8

A. SOURCE DESCRIPTION .........................

................................................... ................. 8 1. Rule Applicability ................................

................................................... ..... 8 2. Rule History ......................................

................................................... ........ 9

C. EMISSIONS ..................................

................................................... .............................. 9

D. CONTROL REQUIREMENTS .......................

................................................... ........... 9 1. VOC Limitations ...................................

................................................... ... 9 2. Control Equipment .................................

................................................... . 10

E. PROPOSED RULE SUMMARY ......................

................................................... ........ 10 1. Section (A) – General .............................

................................................... 10 2. Section (B) – Definitions .........................

.................................................. 10 3. Section (C) – Requirements ........................ ............................................... 14 4. Section (D) – Recordkeeping and Reporting Requireme nts ...................... 18 5. Section (E) – Compliance Procedures and Test Method s ......................... 18 6. Section (F) – Administrative Requirements ......... ..................................... 18

E. 110(l) ANALYSIS ...................................

................................................... .................. 19

F. SIP HISTORY ................................

................................................... ............................ 20 1. SIP History.................................

................................................... ................. 20 2. SIP Analysis................................

................................................... ................ 20

Appendix A – Rule 1124 Iterated Version ...........

................................................... ................... A-1

Appendix B - Public Notice Documents ..............

................................................... .................... B-1

Appendix C - Public Comments and Responses ........

................................................... .............. C-1

Appendix D - California Environmental Quality Act D ocumentation ...................................... . D-1

Appendix E - Bibliography .........................

................................................... .............................. E-1AVAQMD Rule 1124 1

Final Staff Report, 09/20/13 

### STAFF REPORT Rule 1124 – Aerospace Assembly and Component Manufacturing Oper ations

I. PURPOSE OF STAFF REPORT

A staff report serves several discrete purposes. I ts primary purpose is to provide a summary and background material to the members of the Governing Board. This allows the members of the Governing Board to be fully informed before making any required decision. It also provides the documentation necessary for the Governing Board to make any findings, which are required by law to be made prior to the approval or adoption of a docu ment. In addition, a staff report ensures that the correct procedures and proper documentation for app roval or adoption of a document have been performed. Finally, the staff report provides evid ence for defense against legal challenges regarding the propriety of the approval or adoption of the do cument.

II. EXECUTIVE SUMMARY

On July 1, 1997 the Antelope Valley Air Pollution C ontrol District (AVAPCD) was created pursuant to statute (former H&S Code §40106, A.B. 266-Knight Ch. 542, statutes of 1996) and assumed all air pollution control responsibilities from the South C oast Air Quality Management District (SCAQMD) for the area of Los Angeles County outside the Sout h Coast Air Basin (SCAB). The SCAQMD rules in effect within the jurisdiction of the AVAPCD rem ained in effect until the AVAPCD Governing Board superseded, amended, or rescinded them. On J anuary 1, 2002 the Antelope Valley Air Quality Management District (AVAQMD) was created pursuant t o statute (H&S Code §41300 et seq.) to replace the AVAPCD. Once again the rules in effect at the time of the change remained in effect until the AVAQMD Governing Board superseded, amended or r escinded them. Rule 1124 was last amended by the SCAQMD on December 13, 1996, and sub sequently amended by the AVAQMD on March 20, 2007.

The Federal Clean Air Act (FCAA) requires areas des ignated nonattainment for ozone and classified moderate and above to adopt and maintain Reasonably Available Control Technology (RACT) rules for source categories emitting Volatile Organic Com pounds (VOC) and oxides of nitrogen (NO X ) for which U.S. Environmental Protection Agency (USEPA) has issued a Control Techniques Guideline (CTG) document. In addition, such areas are require d to adopt and maintain RACT rules for all other major stationary sources of VOCs and NO X (42 U.S.C. §7511a(b)(2); FCAA §182(b)(2)). The Antelope Valley area has been designated non-attain ment for the eight hour ozone standard and classified as Severe-17.

On March 10, 1998 USEPA adopted a CTG entitled Control of Volatile Organic Compound Emissions from Coating Operations at Aerospace Manufacturing and Rework Operations . In addition, USEPA also has promulgated and amended Maximum Achievable Control Technology (MACT) Standard for Aerospace Manufacturing and Rework Facilities (40 C FR 63 Subpart GG, commencing with §63.741).

The AVAQMD most recently amended Rule 1124 on March 20, 2007 given the issuance of the CTG and amendments to the MACT Standard as well as tech nological advances in coatings use and technology. USEPA indicated that there were severa l specialty coatings from the CTG that were not2 AVAQMD Rule 1124 Final Staff Report, 09/20/13 included in the 2007 rule amendment. The proposed amendments are primarily designed to update the specialty coating categories and definitions to har monize with the CTG as requested by USEPA. Definitions have been added for following the speci alty coating categories: Ablative Coating; Bearing Coating; Bonding Maskant; Caulking and Smoothing Co mpound; Chemical Agent-Resistant Coating (CARC); Chemical Milling Maskant; Chemical Processi ng Maskant; Coating; Commercial Exterior Aerodynamic Structure Primer; Commercial Interior A dhesive; Compatible Substrate Primer; Corrosion Prevention System Compound; Critical Use and Line Sealer Maskant; Cryogenic Flexible Primer; Cryoprotective Coating; Cyanoacrylate Adhes ive; Electrostatic Discharge and Electromagnetic Interference (EMI) Coating (Includes Space Vehicles ); Elevated-Temperature Skydrol-Resistant Commercial Primer; Epoxy Polyamide Topcoat; Fastene r; Fire-Resistant (Interior) Coating (Space); Flexible Primer; Insulation Covering; Intermediate Release Coating; Lacquer Coating; Part Marking Coating; Rocket Motor Bonding Adhesive; Rocket Moto r Nozzle Coating; Rubber-based Adhesive; Screen Print Ink; Seal Coat Maskant; Silicone Insul ation Material; Specialized Function Coating; Specialty Coating; Thermal Control Coating; and, We t Fastener Installation Coating. VOC limits for specialty coatings have been updated to include cat egories in the CTG that were not covered by the previous rule amendment. The proposed amendment al so conforms the formatting to the standard AVAQMD rule format, removes several unused definiti ons, updates several definitions for consistency with the CTG, removes an exemption for Temporary Ma rking Coatings and Materials Marking Coating for consistency with Part Marking Coating c ategory, and cross references have been updated.

This item was noticed on June 14, 2013 for the July 16, 2013 Governing Board meeting. Continuation of the proposed action was necessary to research an d address received from the United States Environmental Protection Agency (USEPA).

III. STAFF RECOMMENDATION

Staff recommends that the Governing Board of the AV AQMD adopt the proposed amendments to Rule 1124 – Aerospace Assembly and Component Manufacturing Oper ations and approve the appropriate California Environmental Quality Act Documentation. This action is necessary to update the rule and align specialty coating categories with the CTG dat ed December 1997 entitled Control of Volatile Organic Compound Emissions from Coating Operations at Aerospace Manufacturing and Rework Operations

. The Governing Board of the Antelope Valley Air Qual ity Management District amended Rule 1124 – Aerospace Assembly and Component Manufacturing Oper ations on August 20, 2013.AVAQMD Rule 1124 3

Final Staff Report, 09/20/13 IV. LEGAL REQUIREMENTS CHECKLIST

The findings and analysis as indicated below are re quired for the procedurally correct amendment of Rule 1124 - Aerospace Assembly and Component Manufacturing Oper ations . Each item is discussed, if applicable, in Section V below. Copies of docum ents are included in the appropriate Appendix.

FINDINGS REQUIRED FOR RULES & REGULATIONS

X Necessity

X Authority

X Clarity

X Consistency

X Non-duplication

X Reference

X Public Notice & Comment

X Public Hearing

REQUIREMENTS FOR STATE IMPLEMENTATION PLAN SUBMISSION (SIP):

X Public Notice & Comment

X Availability of Document

X Notice to Specified Entities (State, Air Districts, USEPA, Other States)

X Public Hearing

X Legal Authority to adopt and implement the document.

X Applicable State laws and regulations were followed. ELEMENTS OF A FEDERAL SUBMISSION

X Elements as set forth in applicable Federal law or regulations.

CALIFORNIA ENVIRONMENTAL QUALITY ACT REQUIREMENTS (CEQA):

N/A Ministerial Action

X Exemption

N/A Negative Declaration

N/A Environmental Impact Report

X Appropriate findings, if necessary.

X Public Notice & Comment

SUPPLEMENTAL ENVIRONMENTAL ANALYSIS (RULES & REGULATIONS ONLY):

X Environmental impacts of compliance.

N/A Mitigation of impacts.

N/A Alternative methods of compliance.

OTHER:

X Written analysis of existing air pollution control requirements

X Economic Analysis

X Public Review4 AVAQMD Rule 1124 Final Staff Report, 09/20/13 V. DISCUSSION OF LEGAL REQUIREMENTS

A. REQUIRED ELEMENTS/FINDINGS

This section discusses the State of California stat utory requirements that apply to the proposed amendment of Rule 1124. These are actions, that ne ed to be performed, and/or information, that must be provided in order to amend the Rule in a procedurally correct manner.

1. State Findings Required for Adoption of Rules & Regulations:

Before adopting, amending, or repealing a rule or r egulation, the AVAQMD Governing Board is required to make findings of necessity, au thority, clarity, consistency, nonduplication, and reference based upon relevant info rmation presented at the hearing. The information below is provided to assist the Boa rd in making these findings.

a. Necessity:

The proposed amendment of Rule 1124 is necessary to update the rule and align specialty coating categories with the CTG.

b. Authority:

AVAQMD has the authority pursuant to California Hea lth and Safety Code (H&S Code) §40702 to adopt, amend or repeal rules a nd regulations.

c. Clarity:

The proposed amendments are clear in that they are written so that the persons subject to the rule can easily understand the meani ng.
d. Consistency:

The proposed amendment of Rule 1124 is in harmony w ith, and not in conflict with or contradictory to, any state law or regulati on, federal law or regulation, or court decisions because the amendment aligns specia lty coating categories with the CTG.

e. Non-duplication:

The proposed amendment of Rule 1124 does not impose the same requirements as an existing state or federal law or regulation b ecause the CTG is primarily a guidance document and requires rule action to imple ment its provisions.

f. Reference:

AVAQMD has the authority pursuant to H&S Code §4070 2 to adopt, amend or repeal rules and regulations.AVAQMD Rule 1124 5

Final Staff Report, 09/20/13

g. Public Notice & Comment, Public Hearing:

Notice for the public hearing for the proposed amen dment of Rule 1124 was published June 14, 2013 for the July 16, 2013 Gover ning Board meeting. This hearing was continued to August 20, 2013 to allow f or time to research and address USEPA comments. See Appendix “B” for a copy of the public notice. See Appendix C for copies of comments, if any, and AVAQ MD responses.

2. Federal Elements (SIP Submittals, Other Federal Submittals).

Submittals to USEPA are required to include various elements depending upon the type of document submitted and the underlying federal la w which requires the submittal. The information below indicates which elements are required for the proposed amendment of Rule 1124 and how they were satisfied.

a. Satisfaction of Underlying Federal Requirements:

The FCAA requires areas designated nonattainment fo r ozone and classified moderate and above to adopt and maintain RACT rules for source categories emitting VOCs and NO X for which USEPA has issued a CTG document. In addition, such areas are required to adopt and main tain RACT rules for all other major stationary sources of VOCs and NO X (42 U.S.C. §7511a(b)(2); FCAA §182(b)(2)). Such RACT rules are required to be su bmitted into the State Implementation Plan (SIP) for the affected area.

AVAQMD Rule 1124 was most recently amended on March 20, 2007 and was submitted for inclusion into the SIP 1 . USEPA indicated that there were several specialty coatings from the CTG that were not inclu ded in the 2007 rule amendment. This amendment will address these speci alty coating categories, and it is expected that this amendment will replace the previous SIP submission. The criteria for determining completeness of SIP su bmissions are set forth in 40 CFR Part 51 Appendix V, 2.0. This staff report and supporting adoption documentation will satisfy the completeness require ments.

b. Public Notice and Comment:

Notice for the public hearing for the proposed amen dment of Rule 1124 was published June 14, 2013 for the July 16, 2013 Gover ning Board meeting. This hearing was continued to August 20, 2013 to allow f or time to research and address USEPA comments. See Appendix “B” for a copy of the public notice.

c. Availability of Document:

Copies of proposed amended Rule 1124 and the accomp anying draft staff report were made available to the public on May 22, 2013.

1 See section VI. F. for SIP history and analysis o f Rule 1124.6 AVAQMD Rule 1124 Final Staff Report, 09/20/13 d. Notice to Specified Entities

Copies of proposed amended Rule 1124 and the accomp anying draft staff report were mailed to all affected agencies, including but not limited to CARB and USEPA on May 22, 2013.

e. Public Hearing:

A public hearing to consider the proposed amendment of Rule 1124 was set for July 16, 2013. This hearing was continued to Augus t 20, 2013 to allow for time to research and address USEPA comments.

f. Legal Authority to Adopt and Implement:

The AVAQMD has the authority pursuant to H&S Code § 40702 to adopt, amend, or repeal rules and regulations and to do su ch acts as may be necessary or proper to execute the duties imposed upon the AV AQMD.

g. Applicable State Laws and Regulations Were Follo wed:

Public notice and hearing procedures pursuant to H& S Code §§40725-40728 have been followed. See Section (V)(A)(1) above fo r compliance with state findings required pursuant to H&S Code §40727. See Section (V)(B) below for compliance with the required analysis of existing r equirements pursuant to H&S Code §40727.2. See Section (V)(C) for compliance w ith economic analysis requirements pursuant to H&S Code §40920.6. See Se ction (V)(D) below for compliance with provisions of the California Enviro nmental Quality Act (CEQA).

B. WRITTEN ANALYSIS OF EXISTING REQUIREMENTS

H&S Code §40727.2 requires air districts to prepare a written analysis of all existing federal air pollution control requirements that apply to the sa me equipment or source type as the rule proposed for modification by the district.

The FCAA requires areas designated non-attainment f or ozone and classified moderate and above to adopt and maintain RACT rules to control t he emissions of VOCs and NO X for categories which the USEPA has adopted a CTG or ACT and for all categories where there are major stationary sources of air pollution (42 U.S.C . §7511a(b)(2), FCAA 182(b)(2)). For purposes of the FCAA, the District has been designa ted non-attainment for ozone and classified severe-17.

The proposed amendments to Rule 1124 update the rul e and align specialty coating categories with the CTG dated December 1997 entitled Control of Volatile Organic Compound Emissions from Coating Operations at Aerospace Manufacturing and Rework Operations . The CTG is primarily a guidance document and requires rule act ion to implement its provisions.AVAQMD Rule 1124 7

Final Staff Report, 09/20/13 C. ECONOMIC ANALYSIS

1. General

The proposed amendments align new specialty coating categories with the aerospace CTG. Existing limits have not been lowered, and ne w categories have been added if they cannot be encompassed within existing rule cat egories. CTG VOC limits are presumptive RACT, and as such should be reasonably available. Coating users should not experience any increased cost for using product that are expected be readily available at this time. The additional coating cat egories also provide more specialized options for industry.

2. Incremental Cost Effectiveness

Pursuant to H&S Code §40920.6, incremental cost eff ectiveness calculations are required for rules and regulations which are adopte d or amended to meet the California Clean Air Act requirements for Best Available Retro fit Control Technology (BARCT) or “all feasible measures” to control volatile comp ounds, oxides of nitrogen or oxides of sulfur.

The proposed amendment of Rule 1124 is not subject to incremental cost effectiveness calculations because this rule does not impose BARC T or “all feasible measures”.

D. ENVIRONMENTAL ANALYSIS (CEQA)

Through the process described below, it was determi ned that a Notice of Exemption would be the appropriate CEQA process for the proposed amend ment of Rule 1124.

1. The proposed amendment of Rule 1124 meets the CE QA definition of “project.” They are not “ministerial” actions.

2. The proposed amendments to Rule 1124 are exempt from CEQA review because they will not create any adverse impacts on the environment. The proposed requirements in the amendment are more str ingent because they will align specialty coating categories to those in the aerospace CTG by adding definitions and specialty coating categories that c annot be encompassed within existing rule categories. There are no changes to existing limits. The exemptions for materials marking coatings and tempo rary marking coatings have been removed for consistency with Part Marking Coating category. Since there is no potential that the amendments might cau se the release of additional air contaminants or create any adverse environmenta l impacts, a Class 8 categorical exemption (14 Cal. Code Reg. §15308) ap plies.8 AVAQMD Rule 1124 Final Staff Report, 09/20/13 E. SUPPLEMENTAL ENVIRONMENTAL ANALYSIS

1. Potential Environmental Impacts

There are no potential adverse environmental impact s of compliance with the amendment of Rule 1124. Rule 1124 will expand the requirements of the rule to include all CTG specialty coating categories. Prim ers, adhesives, sealants, maskants, lubricants and “other” coatings should be reasonabl y available in commerce and should not cause additional usage of the products themselv es, or of cleaning solvents.

2. Mitigation of Impacts

N/A

3. Alternative Methods of Compliance

N/A

F. PUBLIC REVIEW

See Staff Report Section (V)(A)(1)(g) and (2)(b), a s well as Appendix B.

VI. TECHNICAL DISCUSSION

A. SOURCE DESCRIPTION

1. Rule Applicability

Rule 1124 generally applies to any operation associ ated with the manufacture and assembly of parts and products for aircraft and spa ce vehicles. Affected industries include facilities which manufacture or rework comm ercial and military aircraft, satellite, space shuttle and rocket contractors and their subcontractors. Affected operations include, but are not limited to, manufac ture, component manufacture, refinishing, repair maintenance and service of any type of commercial and military aircraft or spacecraft. This includes commercial a nd military airplanes, helicopters, dirigibles, balloons, missiles and spacecraft such as rockets, satellites and space shuttles. In general, Rule 1124 has similar applic ability to the Maximum Achievable Control Technology (MACT) Standard for Aerospace Ma nufacturing and Rework Facilities (40 CFR 63 Subpart GG, commencing with § 63.741). Materials regulated by this rule include primers, coatings, adhesives, sea lants, maskants, lubricants, and others. Some of these materials are covered under a USEPA C ontrol Techniques Guideline (CTG) entitled “ Control of Volatile Organic Compound Emissions from Coating Operations at Aerospace Manufacturing and Rework Op erations ” (December 1997, EPA-453/R-97-004).

Five facilities in the AVAQMD will be potentially b e affected by the proposed amendments to Rule 1124. These facilities are Lock heed Martin AeronauticsAVAQMD Rule 1124 9

Final Staff Report, 09/20/13

Company, Northrop Grumman Systems Corp., The Boeing Company, Incotec Corporation, and Morton Manufacturing.

2. Rule History

On July 1, 1997 the AVAPCD was created pursuant to statute (former H&S Code §40106, A.B. 266-Knight Ch. 542, statutes of 1996) and assumed all air pollution control responsibilities from the SCAQMD for the ar ea of Los Angeles County outside the South Coast Air Basin. The SCAQMD rules in eff ect within the jurisdiction of the AVAPCD remained in effect until the AVAPCD Governin g Board superseded or amended them. Rule 1124 as amended by SCAQMD on De cember 13, 1996 was one of these rules.

On January 1, 2002 the AVAQMD was created pursuant to statute (H&S Code §41300 et seq.) to replace the AVAPCD. Once again the rul es in effect at the time of the change remained in effect until the AVAQMD Governin g Board superseded or amended them. The December 13, 1996 version of the SCAQMD rule was the effective version within the AVAQMD. The AVAQMD subsequently amended rule 1124 on March 20, 2007, and this is the current version of the rule in the rulebook.

The version of the rule in the SIP for the AVAQMD i s not the version contained in the rulebook. The March 20, 2007 version as amended by AVAQMD has not been approved into the SIP. Therefore, a SCAQMD version of Rule 1124 has been retained in the SIP. The December 13, 1996 SCAQMD version ( which was the rule version retained in the AVAPCD rule book upon formation) wa s submitted as a SIP revision on August 1, 1997 after the creation of the AVAPCD. T herefore the SCAQMD submission could not be applied to the AVAPCD’s SIP and USEPA’s action on the SCAQMD submission recognized this fact. Thus, the version in the SIP for the area within the jurisdiction AVAQMD is the SCAQMD Januar y 13, 1995 version. Please see section (F) below for a more detailed explanati on of the SIP history.

B. EMISSIONS

There are no changes to existing VOC limits in the amendment of Rule 1124. The proposed requirements in the amendment are more stringent be cause they will align specialty coating categories to those in the CTG by adding definition s and categories previously not covered. There is no potential that the amendments might cau se the release of additional air contaminants or create any adverse environmental im pacts.

C. CONTROL REQUIREMENTS

1. VOC Limitations

Rule 1124 provides a variety of VOC limits on prime rs, coatings, adhesives, sealants, maskants and lubricants used in the manufacturer an d remanufacture of aerospace assembly and components. These are the primary con trol requirements in the rule (see rule subsection (C)(1)). The specific proposed ame ndments to various VOC limitations10 AVAQMD Rule 1124 Final Staff Report, 09/20/13 are indicated in the iterated version of the rule i n Appendix “A” and section (VI)(B) above.

2. Control Equipment

In the alternative to VOC limits, Rule 1124 provide s that a coating of any VOC amount may be used so long as it is vented to an air pollu tion control device with 95 percent destruction efficiency and 90 percent capture effic iency for an overall control efficiency of 85 percent (see rule subsection (C)(6)).

D. PROPOSED RULE SUMMARY

This section gives a brief overview of the proposed amendment to Rule 1124.

1. Section (A) – General

Defined terms have been capitalized for consistency with rule format.

2. Section (B) – Definitions

Defined terms have been capitalized within the rule for consistency with rule format.

The following definitions have been added or update d:

Subsection (B)(1) – “Ablative Coating” definition h as been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(2) – “Adhesion Promoter” has been te rmed a coating rather than a primer for consistency with CTG nomenclature.

Subsection (B)(4) – “Adhesive Bonding Primer” defin ition has been updated for consistency with the CTG definition.

Subsection (B)(14) – “Bearing Coating” definition h as been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(15) – “Bonding Maskant” definition h as been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(16) – “Caulking and Smoothing Compou nd” definition has been added to reflect the CTG specialty coatings category of t he same name in subsection (C)(1)(a).

Subsection (B)(17) – “Chemical Agent-Resistant Coat ing (CARC)” definition has been added to reflect the CTG specialty coatings categor y of the same name in subsection (C)(1)(a).

Subsection (B)(19) – “Chemical Milling Maskant” def inition has been updated for consistency with the CTG. Previously defined as “M askant for Chemical Milling.”AVAQMD Rule 1124 11

Final Staff Report, 09/20/13

Subsection (B)(20) – “Chemical Processing Maskant” definition has been reformatted for consistency. Previously defined as “Maskant fo r Chemical Processing.”

Subsection (B)(22) – “Coating” definition has been added for consistency with the CTG and for clarity.

Subsection (B)(24) – “Commercial Exterior Aerodynam ic Structure Primer” definition has been added to reflect the CTG specialty coating s category of the same name in subsection (C)(1)(a).

Subsection (B)(25) – “Commercial Interior Adhesive” definition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(26) – “Compatible Substrate Primer” definition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(28) – “Corrosion Prevention Compound System” definition has been added to reflect the CTG specialty coatings categor y of the same name in subsection (C)(1)(a).

Subsection (B)(29) – “Critical Use and Line Sealer Maskant” definition has been added to reflect the CTG specialty coatings category of t he same name in subsection (C)(1)(a). Previously defined as “Line Sealer Maskant.”

Subsection (B)(30) – “Cryogenic Flexible Primer” de finition has been added to reflect the CTG specialty coatings category of the same nam e in subsection (C)(1)(a). Previously defined as “Line Sealer Maskant.”

Subsection (B)(31) – “Cryoprotective Coating” defin ition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(32) – “Cyanoacrylate Adhesive” defin ition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(37) – “Electrostatic Discharge and E lectromagnetic Interference (EMI) Coating” definition has been added to reflect the C TG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(38) – “Elevated-Temperature Skydrol- resistant Commercial Primer” definition has been added to reflect the CTG specia lty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(39) – “Epoxy Polyamide Topcoat” defi nition has been added to reflect the CTG specialty coatings category of the same nam e in subsection (C)(1)(a).

Subsection (B)(40) – “Exempt Compounds” definition has been modified to be consistent with District Tert-Butyl Acetate (tBA) p olicy.12 AVAQMD Rule 1124 Final Staff Report, 09/20/13 Subsection (B)(42) – “Fastener” definition has been has been added for clarification of the CTG specialty coatings category for Fastener Se alant in subsection (C)(1)(a).

Subsection (B)(44) – “Fire Resistant (Interior) Coa ting” definition has been modified to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a) by including civilian, military and space applications

. Subsection (B)(45) – “Flexible Primer” definition h as been has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(54) – “Insulation covering” definiti on has been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(55) – “Intermediate Release Coating” definition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(56) – “Lacquer Coating” definition h as been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(64) – “Part Marking Coating” definit ion has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(68) – “Prebonding Etchant” definitio n has been modified by combing definition with Wire Prebonding Etchant to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(69) – “Pretreatment Primer” has been changed to “Pretreatment Coating” for consistency with the CTG category.

Subsection (B)(75) – “Rocket Motor Bonding Adhesive ” definition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(76) – “Rocket Motor Nozzle Coating” definition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(78) – “Rubber-based Adhesive” defini tion has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(80) – “Screen Print Ink” definition has been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(82) – “Seal Coat Maskant” definition has been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(83) – “Silicone Insulation Material” definition has been added to reflect the CTG specialty coatings category of the same nam e in subsection (C)(1)(a).AVAQMD Rule 1124 13

Final Staff Report, 09/20/13

Subsection (B)(87) – “Specialized Function Coating” definition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Subsection (B)(88) – “Specialty Coating” definition has been added to reflect the CTG specialty coatings category of the same name in sub section (C)(1)(a).

Subsection (B)(95) – “Thermal Control Coating” defi nition has been added to reflect the CTG specialty coatings category of the same nam e in subsection (C)(1)(a).

Subsection (B)(96) – “Topcoat” definition has been modified to CTG definition for clarification, and to include clear coating CTG cat egory.
Subsection (B)(103) – “Volatile Organic Compound (V OC)” definition has been modified for consistency with District Tert-Butyl A cetate (tBA) policy.

Subsection (B)(104) – “Wet Fastener Installation Co ating” definition has been added to reflect the CTG specialty coatings category of the same name in subsection (C)(1)(a).

Definitions for the following definitions removed:

Previous subsection (B)(21) – “Epoxy Based Fuel Tan k Coating” has been removed. This category was combined with General Fuel Tank C oating in previous amendment.

Previous subsection (B)(34) – “Line Sealer Maskant” has been removed. This category is combined with definition for Critical Use and Li ne Sealer Maskant.

Previous subsection (B)(37) – “Maskant for Chemical Milling” definition has been redefined as Chemical Milling Maskant for consisten cy with definition format.

Previous subsection (B)(38) – “Maskant for Chemical Processing” definition has been redefined as Chemical Processing Maskant for consis tency with definition format.

Previous subsection (B)(52) – “Repair Maskant” has been removed. This definition not specifically used. Critical Use and Line Sealer Ma skant definition includes a repair provision.

Previous subsection (B)(55) – “Rubber Solution Fuel Tank Coating” has been removed. Definition no longer used. See Fuel Tank Coating – General or – Rapid Cure.

Previous subsection (B)(66) – “Temporary Marking Co ating” has been removed. Definition no longer used. See Part Marking Coatin g.
Previous subsection (B)(69) – “Touch Up Coating” ha s been removed. Definition not used. See definition for Touch-Up Operation.

Previous subsection (B)(78) – “Wire Ink” has been r emoved. Definition not used. See subcategories of Wire Coating category.14 AVAQMD Rule 1124 Final Staff Report, 09/20/13 Previous subsection (B)(79) – “Wire Prebonding Etch ant” has been removed. See Prebonding Etchant.

3. Section (C) – Requirements

Subsection (C)(1)(a) table has been modified to inc orporate specialty coating categories that were added in the definition section. Several coatings have been relocated for consistency with definitions in the CTG. Categorie s in Lubricant section have been specified for clarity by when the coating is applie d, either at time of manufacture or installation.

SPECIALTY COATING VOC LIMITS Grams Per Liter of Coating Less Water and Less Exem pt Compounds

AEROSPACE MATERIALS VOC Limit [Explanatory Comments, not a part of rule]

PRIMERS -- General 350 SIP category.

Adhesion Promoter 850 Moved to coating category for consistency with CTG definition.

Adhesive Bonding Primers -- See AVAQMD 3/20/07 Staff Report for discussion of this

category. Commercial Aircraft 250 Military Aircraft 805

Commercial Exterior Aerodynamic Structure Primer 65 0 New CTG category. Not a subcategory of pretreatment

primer.

Compatible Substrate Primer 780 New CTG category. Not a low solids corrosion resistant primer.

Cryogenic Flexible Primer 645 New CTG category. Not a subcategory of pretreatment

primer.

Elevated Temperature Skydrol-Resistant Commercial P rimer 740 New CTG category. Not a subcategory of pretreatment

primer.

Flexible Primer 640 New CTG category. Not a subcategory of pretreatment

primer.

Low Solids Corrosion Resistant Primer 350 Added in 3/20/07 amendment. CTG category.

Pretreatment Primer 780 Moved to coating category for consistency with CTG definition. Primer Compatible with Rain Erosion-Resistant Coati ng 850 SIP category.

COATINGS --AVAQMD Rule 1124 15

Final Staff Report, 09/20/13 Ablative Coating 600 New CTG category.

Adhesion Promoter Coating 850 Moved from primer category for consistency with CTG definition. Antichafe Coating 420 SIP Category.

Bearing Coating 620 New CTG category, not a subcategory of Fastener Lubricative or non-fastener lubricative coating.

Chemical Agent-Resistant Coating 550 New specialized CTG category, resistant to chemical warfare agents, not a subcategory of

topcoat. Conformal Coating 750 SIP Category.

Cryoprotective Coating 600 New CTG category, not specific to space vehicles. Prevents ice

formation. Electric- or Radiation-Effect Coating 800 SIP Category. Electrostatic Discharge and Electromagnetic Interfe rence (EMI) Coating 800 New CTG category, not specific to space vehicles.
Fire-Resistant (Interior) Coating --
Civilian 650 SIP Category. Military 800 SIP Category.

Space 800 Sub-category split out to conform to CTG definition. Flight-Test Coating -- Used on Missiles or Single Use Target AircC raft 420 SIP Category. All Other 840 SIP Category.

Fuel-Tank Coating -- See AVAQMD 3/20/07 Staff Report for discussion of this

category. General 420 Rapid Cure 720 High-Temperature Coating 850 SIP Category. Impact-Resistant Coating 420 SIP Category. Intermediate Release Coating 750 New CTG category.

Lacquer Coating 830 New CTG category. Lacquer is not always a topcoat. Metallized Epoxy Coating 700 SIP Category.

Mold Release Coatings 780 Added in 3/20/07 amendment. CTG category. Optical Anti-Reflection Coating 700 SIP Category.

Part Marking Coating 850 New CTG category. Part marking can be permanent or temp. Remove exemption (G)(9)

and (G)(11).16 AVAQMD Rule 1124 Final Staff Report, 09/20/13 Pretreatment Coating 780 Moved from primer category for consistency with CTG definition. Rain Erosion-Resistant Coating 800 SIP Category.

Rocket Motor Nozzle Coating 660 New CTG category. Not a subcategory as it is very specific to withstand heat, pressure and

magnetic forces. Scale Inhibitor Coating 880 SIP Category.

Space-Vehicle Coatings, Other, not including Elect ric Discharge and EMI Protection Coating or Fire Resistant (Inter ior) Coating 1000 CTG does not distinguish between space and other. SIP category.

Electrostatic Discharge and Electromagnetic Interference (EMI) Protection Coating 800 This category is not specific to space vehicles. Alphabetized into

general table.

Fire-Resistant (Interior) Coating 800 This category is not specific to space vehicles. Alphabetized into

general table. Other Space-Vehicle Coating 1000 Specialized Function Coating 890 New CTG category. Temporary Protective Coating 250 SIP Category. Thermal Control Coating 800 New CTG category.

Topcoat -- Definition updated to include clear coating category from CTG.
Clear 520 SIP category. Epoxy Polyamide 660 New CTG category.

Other 420 Reorganized for consistency with rest of table format. Unicoat Coating 420 SIP category. Wet Fastener Installation Coating 675 New CTG category. Wing Coating 750 SIP Category. Wire Coating s SIP Categories. Electronic Wire Coating 420 Anti-Wicking 420 Pre-Bonding Etchant 420 Phosphate Ester Resistant Ink 925

ADHESIVES --

Commercial Interior Adhesive 760 New CTG category, not covered by non-structural category. Cyanoacrylate Adhesive 1020 New CTG category.
Fuel-Tank Adhesive 620 SIP category. Non-Structural Adhesive 250 SIP category.

Rocket Motor Bonding Adhesive 890 New CTG category, not covered by space vehicle adhesive.AVAQMD Rule 1124 17

Final Staff Report, 09/20/13 Rubber-based Adhesive 850 New CTG category. Space Vehicle Adhesive 800 SIP category.

Structural Adhesive -- See AVAQMD 3/20/07 Staff Report for discussion of this

category. Autoclavable 50 High Temperature - Autoclavable 650
Non-Autoclavable 850

SEALANTS --
Extrudable, Rollable , or Brushable or Extrudable Sealant 280 Added in 3/20/07 amendment. CTG category.

Fastener Sealant 675 Inadvertently removed by SCAQMD. This limit is in SIP

version of Rule.
Other 600 SIP category.

MASKANTS --

Bonding Maskant 1230 New CTG category. Definition of Chemical Milling Maskants says it is not bonding maskant.

Critical Use and Line Sealer Maskant 750 Renamed Touch-up, Line-sealer Maskant category for consistency

with CTG.

For Chemical Milling Maskant Added in 3/20/07 amendment. CTG category. For use with Type I Etchant 250 For use with Type II Etchant 160

For Chemical Processing *Less water, exempt compounds and perchloroethylene (PERC) 250* Photolithographic Maskant 850 SIP category.

Touch-up, Line-Sealer Maskant 750 Becomes Critical Use and Line Sealer Maskant.

* Less water exempt compounds and perchloroethylen e (PERC). Moved to category line.

Seal Coat Maskant 1230 New CTG category. Definition of Chemical Milling Maskants says it is not bonding maskant.

LUBRICANTS -- Fastener Installation Lubricant (applied at time of aircraft/component assembly) -- Clarification. SIP categories.
Solid-Film Lubricant 880 Dry Lubricative Material 67518 AVAQMD Rule 1124 Final Staff Report, 09/20/13 Fastener Lubricative Coating (applied at time of fastener manufacture) -- Clarification. SIP categories.
Solid-Film Lubricant 250 Dry Lubricative Material 120 Barrier Coating 420 Non-Fastener Lubricative Coatings (applied at time of nonfastener manufacture) -- Clarification. SIP categories.
Solid-Film Lubricant 880 Dry Lubricative Materials 675

OTHER -- Caulking and Smoothing Compound 850 New CTG category. Corrosion Prevention Compound System 710 New CTG category. Insulation Covering 740 New CTG category.

Screen Print Ink 840 New CTG category not covered specifically by graphic arts rules.

Silicone Insulation Material 850 New CTG category for aerospace industry specific material.

Rule titles added to referenced rules.

4. Section (D) – Recordkeeping and Reporting Requir ements

Rule title added to referenced rule.

5. Section (E) – Compliance Procedures and Test Met hods

Equations have been updated using equation tool.

Subsection (E)(2) and (E)(3) updated to include AST M and SCAQMD test method titles.

Subsection (E)(3)(d) test method updated and rule c itation corrected pursuant to USEPA comment.

6. Section (F) – Administrative Requirements

Rule title added to referenced rule.

7. Section (G) - Exemptions

Subsections (G)(9) and (G)(11) have been removed fo r consistency with CTG Part Marking Coating category.AVAQMD Rule 1124 19

Final Staff Report, 09/20/13 E. 110(l) ANALYSIS

The version of Rule 1124 shown in the AVAQMD SIP is SCAQMD Rule 1124 – Aerospace Assembly and Component Coating Operations as amended on January 13, 1995 (61 FR 20136, 05/06/96). Therefore, the District will perform th e 110(l) determination based upon differences between the January 13, 1995 version and the curren t proposed amendments.

Rule 1124 was amended by SCAQMD subsequent to the J anuary 13, 1995 SIP version on December 13, 1996. The December 13 1996 SCAQMD ame ndment is the version that was retained in the rule book by the AVAPCD upon creati on on July 1, 1997. This amendment redefined adhesion promoter as an adhesive bonding primer and extended the compliance dates for: several types of adhesive bonding primers, fue l-tank coatings, solid-film lubricants and primer coatings from 1997 to either 1998, 1999, 200 0, or 2002, because compliant coatings had not been qualified by all major aerospace companies . In addition, the VOC limits were decreased for dry lubricative coatings. The fasten er sealant category was included in the December 13, 1995 amendment, but was inadvertently eliminated and replaced with dry lubricative materials in the December 13, 1996 amen dment. The fastener sealant category has been added back in to the proposed amendment to cor rect this typographical error. The amendment was a strengthening of the rule rather th an a relaxation and no 110(l) determination
was necessary.
AVAQMD again amended Rule 1124 on March 20, 2007. This amendment was designed to harmonize coating categories and definitions with t he CTG and MACT Standard. This amendment increased the VOC limit in the following categories: Adhesion Promoters, Adhesion Bonding Primer (Military), Fuel tank Coati ng (Rapid Cure), and High Temperature Structural Adhesive (Autoclavable). The amendment also contained a decrease in the VOC limits for: Antichafe Coatings, Extrudable, Rollabl e and Brushable Sealants, and Maskants for Use with Type II Etchants. The amendments also add ed limits for several unregulated coatings, namely Low Solids Corrosion Resistant Pri mer and Mold Release Coatings. This amendment was designed such that increases and decr eases resulted in no emissions increase overall from coatings subject to 1124. 2 The AVAQMD obtained coatings usage data from the two (2) major sources in the aerospace manufacturin g source category and was able to show a reduction in emissions by 2,690 lbs/yr. 3 This rule amendment did not interfere with attain ment and reasonable further progress, or any other FCAA requirement.

The District is proposing to add additional special ty coating categories which were previously unregulated that will align the rule with the CTG. This rule amendment did not interfere with attainment and reasonable further progress, or any other FCAA requirement because the AVAQMD has determined that all limits and requireme nts contained in the proposed amendments are as stringent or more stringent that in the SIP version of the rule.

2 Staff report for the Proposed Amendment to Rule 11 24 – Aerospace Assembly and Component Manufacturing Operations for adoption on March 20, 2007, D2 2/12/07.
3 Ibid., p. 10.20 AVAQMD Rule 1124 Final Staff Report, 09/20/13 F. SIP HISTORY

1. SIP History.

Prior to July 1, 1997 the Antelope Valley was conta ined within the South Coast Air Quality Management District (SCAQMD). On July 1, 1 997 the Antelope Valley Air Pollution Control District (AVAPCD) replaced the SC AQMD as the agency with jurisdiction over the Los Angeles County portion of the Mojave Desert Air Basin (MDAB). On January 1, 2001 the AVAPCD was replaced by the AVAQMD. Pursuant to both statutory changes, the rule and regulations of the predecessor district were retained until the Governing Board adopted, amended or rescinded them. At the first meeting of the both the AVAPCD and the AVAQMD, the respective Governing Boards reaffirmed all the rules and regulations in effect at the time the agency changed.

The jurisdiction of the AVAPCD and the AVAQMD were specified in the statutes as the portion of the Los Angeles County contained wit hin the MDAB. The MDAB was formerly known as the Southeast Desert Air Basin (S EDAB). In 1997 the SEDAB was split into the MDAB and the Salton Sea Air Basin. Descriptions of these air basins can be found in 17 Cal. Code Regs. §§60109 and 60144. Since USEPA adopts SIP revisions in California as effective within jurisdi ctional boundaries of local air districts, when the local air district boundaries change the S IP as approved by USEPA for that area up to the date of the change remains as the SI P in that particular area. Thus, upon creation of the AVAPCD on July 1, 1997 the AVAPCD a cquired the SIP applicable to the Antelope Valley portion of the SCAQMD that was affected as of June 30, 1997. Likewise the AVAQMD acquired the SIP that was effec tive in the jurisdiction of the AVAPCD as of December 31, 2000. Therefore, the SIP history for this region is based upon the rules adopted, effective, and approved for the Antelope Valley by SCAQMD.

2. SIP Analysis.

Rule 1124 was originally adopted on July 6, 1979 by SCAQMD and submitted as a SIP revision to USEPA. USEPA approved that submittal o n September 28, 1981 (46 FR 47451; 40 CFR 52.220(c)(58)(88)(B)). Rule 1124 was thereafter amended by SCAQMD on May 7, 1982 and January 6, 1984. The 198 4 revision was approved into the SIP by USEPA on January 24, 1985 (50 FR 3338; 4 0 CFR 52.220(c)(154)(vii)(A)). SCAQMD further amended Rule 1124 on June 1, 1984, J anuary 9, 1987, February 6, 1987, April 3, 1987, May 5, 1989, March 2, 1990, Ap ril 4, 1990, June 1, 1990, November 2, 1990, December 7, 1990, August 2, 1991, March 6, 1992, December 4 1992, and December 10, 1993. Many, if not all, of t hese amendments were submitted as SIP revisions, but USEPA action on such submissions is unknown. SCAQMD further amended Rule 1124 on January 13, 1995 and USEPA app roved this amendment as a SIP revision on May 6, 1996 (61 FR 20136; 40 CFR 52 .220(c)(215)(i)(A)(5)). SCAQMD further amended Rule 1124 on December 13, 19 96; however, that rule amendment was not submitted to USEPA until August 1 , 1997 after the creation of the AVAPCD. Thus, the submittal of the December 13, 19 96 rule and its subsequent approval by USEPA (8/17/98 63 FR 43884; 40 CFR 52.2 20(c)(248)(i)(B)(1)) is notAVAQMD Rule 1124 21

Final Staff Report, 09/20/13

effective for the jurisdiction of the AVAPCD and it s successor agency the AVAQMD. The AVAQMD subsequently amended rule 1124 on March 20, 2007, and this is the current version of the rule in the rulebook. This amendment has not been approved into the SIP because USEPA indicated that there were sev eral specialty coating categories from the CTG that were not included in the rule ame ndment. Therefore, the current version in the AVAQMD SIP of this rule is the SCAQM D rule as amended on January 13, 1995.22 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.AVAQMD Rule 1124 A

- 1

Final Staff Report, 09/20/13 

### APPENDIX "A" Rule 1124 - Aerospace Assembly and Component Manufacturing Oper ations Iterated Version

The iterated version is provided so that the change s to an existing rule may be easily found. The man ner of differentiating text is as follows:

1. Underlined text identifies new or revised langua ge.
2. Lined out text identifies language which is bei ng deleted.

3. Normal text identifies the current language of t he current rule which will remain unchanged by the adoption of the proposed amendments.

4. Italicized text

identifies explanatory material that is not part o f the proposed language.A-2 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.( Adopted : 07/06/79; Amended : 5/07/82; Amended : 01/06/84; Amended : 06/01/84; Amended : 01/09/87; Amended : 2/06/87; Amended : 04/03/87; Amended 05/05/89; Amended : 03/02/90; Amended : 04/06/90; Amended : 06/01/90; Amended : 11/02/90; Amended : 12/07/90; Amended : 08/02/91; Amended 03/06/92; Amended : 12/04/92; Amended : 12/10/93; Amended : 1/13/95; Amended : 12/13/96; Amended: 03/20/07; Amended: mm/dd/yy)

AVAQMD Rule 1124 1124-1 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 

## RULE 1124

Aerospace Assembly and Component Manufacturing Operations

(A) General

(1) Purpose

(a) To reduce Vv olatile Oo rganic Cc ompounds (VOC) emissions from aerospace assembly and component manufacturing operations.

(2) Applicability

(a) This rule applies to any operation associated w ith manufacturing and assembling products for Aa ircraft and Ss pace Vv ehicles. The affected industries include commercial and military Aa ircraft, satellite, space shuttle and rocket manufacturers and their subcontractors.

(b) This rule also applies to maskant applicators, Aa ircraft refinishers, Aa ircraft Ff astener Mm anufacturers, Aa ircraft operators, and Aa ircraft maintenance and service facilities.


### (B) Definitions

For the purpose of this rule, the following definit ions shall apply:

[Unless otherwise indicated, new definitions are de rived from “Control of Volatile Organic Compound Emissions from Coating Operations at Aeros pace Manufacturing and Rework Operations,” EPA-453/R-97-004, December 1997.]

(1) Ablative Coating – A coating that chars when ex posed to open flame or extreme temperatures, as would occur during the failure of an engine casing or during aerodynamic heating. The ablative char surface ser ves s an insulative barrier, protecting adjacent components from the heat or open flame.1124-2 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 21 ) Adhesion Promoter Coating – A Coatingprimer that is used to promote wetting and form a chemical bond with a subsequently applied Ss ealant or other elastomer. [Moved from primer category for consistency with the CTG d efinition.]

( 32 ) Adhesive - Any substance that is used to bond one surface to another surface by attachment.

( 43 ) Adhesive Bonding Primer - A Pp rimer applied in a thin film to Aa erospace Cc omponents for the purpose of corrosion inhibition andto increase d adhesive or adhesive film bond strength by attachment

. ( 54 ) Aerosol Coating Product - A pressurized coating p roduct containing pigments or resins that is dispensed by means of a propellant, and is packaged in a disposable can for hand-held application.

( 65 ) Aerospace Component - The raw material, partial o r completed fabricated part, assembly of parts, or completed unit of any Aa ircraft or Ss pace Vv ehicle and includes integral equipment such as models, mock-ups, protot ypes, molds, jigs, tooling, hardware jackets, and test coupons.

( 76 ) Aerospace Material – any coating, Pp rimer, Aa dhesive, Ss ealant, maskant, lubricant, Ss tripper or hand-wipe cleaning or clean-up solvent u sed during the manufacturing, assembly, refinishing, maintenance or service of an Aerospace Component. ]

( 87 ) Air Brush Operations – Application of Aerospace M aterial with equipment operating at air pressure between 25 psi and 116 psi and an air volume of 0.7 cfm and 1.75 respectively.

( 98 ) Aircraft - Any machine designed to travel through the air, without leaving the earth's atmosphere, whether heavier or lighter than air, in cluding airplanes, balloons, dirigibles, helicopters, and missiles.

( 109 ) Air Pollution Control Officer (APCO) – The person appointed to the position of Air Pollution Control Officer of the District pursuant to the provisions of California Health & Safety Code §40750 and his or her designee

. (1 10 ) Antichafe Coating - A coating applied to areas of moving Aa erospace Cc omponents which may rub during normal operation.

(1 21 ) Anti-Wicking Wire Coating - The outer coating of a wire which prevents fluid wicking into insulation of the wire.

(1 32 ) Barrier Coating - A coating applied in a thin fil m to fasteners to inhibit dissimilar metal corrosion and to prevent galling.AVAQMD Rule 1124 1124-3

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 (14) Bearing Coating – A coating applied to an anti friction bearing, a bearing housing, or the area adjacent to such bearing in order to facilitat e bearing function or to protect be material from excessive wear. A material shall not be classified as a Bearing Coating if it can also be classified as a dry lubricative mate rial or a solid-film lubricant.

(15) Bonding Maskant – A temporary coating used to protect selected areas of aerospace parts from strong acid or alkaline solutions during processing for bonding.

(16) Caulking and Smoothing Compound – Semi-solid m aterials which are applied by Hand Application Methods and are used to aerodynamically smooth exterior vehicle surfaces or fill cavities such as bolt hole accesses. A mat erial shall not be classified as a Caulking and Smoothing Compound if it can also be c lassified as a Sealant.

(17) Chemical Agent-Resistant Coating (CARC) – An e xterior Topcoat designed to withstand exposure to chemical warfare agents or th e decontaminants used on these agents.

(1 83 ) Chemical Milling

- The removal of metal by chemical action of acids o r alkalis.

(19) Chemical Milling Maskant - A coating applied d irectly to aluminum components to protect surface areas when Chemical Milling the com ponent with a Type I or Type II Etchant. Type I Chemical Milling Maskants are used with a Type I Etchant and Type II Chemical Milling Maskants are used with a Type II E tchant. This definition does not include Bonding Maskants, Critical Use and Line Sea lant Maskants, and Seal Coat Maskants. Additionally, maskants that must be used with a combination of Type I or II Etchants and any of the above types of maskants (I. e., Bonding, Critical Use and Line Sealer, and Seal Coat) are not included. Maskants that are defined as Specialty Coatings are not included in this definition. [Definition updated to CTG definition for clarity of categories.]

(20) Chemical Processing Maskant - A coating applie d directly to an Aerospace Component to protect surface areas when anodizing, aging, bon ding, plating, etching, and/or performing other chemical surface operations on the component.

( 1421 ) Clear Topcoat - A Tt opcoat that contains no visible pigments and is uni formly transparent when applied.

(22) Coating – A material that is applied to the su rface of an aerospace vehicle or component to form a decorative, protective, or functional sol id film, or the solid film itself.

( 2315 ) Coating Application Equipment - Equipment used fo r applying coating to a substrate. Coating Aa pplication Ee quipment includes coating distribution lines, coati ng hoses, pressure-pots, spray guns, and hand-application equ ipment, such as hand-rollers, brushes, daubers, spatulas, and trowels.1124-4 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 (24) Commercial Exterior Aerodynamic Structure Prim er – A Primer used on aerodynamic components and structures that protrude from the fu selage, such as wings and attached components, control surfaces, horizontal stabilizer s, vertical fins, wing-to-body fairings, antennae, and landing gear and doors, for the purpo se of extended corrosion protection and enhanced adhesion.

(25) Commercial Interior Adhesive – Materials used in the bonding of passenger cabin interior components. These components must meet th e FAA fireworthiness requirements.

(26) Compatible Substrate Primer – Either compatibl e epoxy primer or adhesive primer. Compatible epoxy primer is primer that is compatibl e with the filled elastomeric coating and is epoxy based. The compatible substrate prime r is an epoxypolyamide primer used to promote adhesion of elastomeric coatings such as impact-resistant coatings. Adhesive primer is a coating that (1) inhibits corr osion and serves as a primer applied to bare metal surfaces or prior to adhesive applicatio n, or (2) is applied to surfaces that can be expected to contain fuel. Fuel tank coatings ar e excluded from this category.

( 2716 ) Conformal Coating - A coating applied to electric al conductors and circuit boards to protect them against electrical discharge damage an d/or corrosion.

(28) Corrosion Prevention Compound System – A coati ng system that provides corrosion protection by displacing water and penetrating mati ng surfaces, forming a protective barrier between the metal surface and moisture. Co atings containing oils or waxes are excluded from this category.

(29) Critical Use and Line Sealer Maskant – A tempo rary coating, not covered under other maskant categories, used to protect selected areas of aerospace parts from strong acid or alkaline solutions such as those used in anodizing, plating, Chemical Milling and processing of magnesium, titanium, or high-strength steel, high-precision aluminum Chemical Milling of deep cuts, and aluminum Chemica l Milling of complex shapes. Materials used for repairs or to bridge gaps left b y scribing operations (i.e., line sealer) are also included in this category.

(30) Cryogenic Flexible Primer – A Primer designed to provide corrosion resistance, flexibility, and adhesion of subsequent coating sys tems when exposed to loads up to and surpassing the yield point of the substrate at cryo genic temperatures (-275°F and below).

(31) Cryoprotective Coating – A coating that insula tes cryogenic or subcooled surfaces to limit propellant boil-off, maintain structural inte grity of metallic structures during ascent or re-entry, and prevent ice formation.

(32) Cyanoacrylate Adhesive – A fast-setting, singl e component Adhesive that cures at room temperature. Also known as “super glue.”AVAQMD Rule 1124 1124-5

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 (33) District – The Antelope Valley Air Quality Man agement District, the geographical area of which is described in District Rule 103.

( 3417 ) Dry Lubricative Material s -Coatings consisting of lauric acid, cetyl alcohol , waxes or other non-cross linked or resin bound materials whi ch act as a dry lubricant or protective coat.

(18) District – The Antelope Valley Air Quality Man agement District, the geographical area of which is described in District Rule 103. [Alphabetized.]

( 3519 ) Electric

- oO r Radiation-Effect Coatings - Include electrically conductive coatings and radiation effect coatings and coating systems the u ses of which may include prevention of radar detection.

( 3620 ) Electronic Wire Coating - The outer electrical in sulation coating applied to tape insulation of a wire specifically formulated to smo oth and fill edges.

(37) Electrostatic Discharge and Electromagnetic In terference (EMI) Coating – A coating applied to Space-Vehicles, missiles, aircraft radom es, and helicopter blades to disperse static energy or reduce electromagnetic interferenc e.
(38) Elevated-Temperature Skydrol-resistant Commerc ial Primer – Primer applied primarily to commercial Aircraft (or commercial Aircraft adap ted for military use) that must withstand immersion in phosphate-ester (PE) hydraul ic fluid (Skydrol 500b or equivalent) at the elevated temperature of 150°F fo r 1,000 hours.

( 21) Epoxy Based Fuel-Tank Coating - Acoating that c ontains epoxy resin that is applied to a fuel tank of an aircraft to protect it from corro sion and/or bacterial growth. [Definition deleted. This category was combined with General F uel Tank Coating in previous amendment which has same VOC limit.]

(39) Epoxy Polyamide Topcoat – Coating used where h arder films are required or in some areas where engraving is accomplished in camouflage colors.

( 4022 ) Exempt Compounds - A compound identified as exempt in 40 CFR 51.100(s) (1)

. [Definition modified to be consistent with District Tert-Butyl Acetate (tBA) policy.]

( 4123 ) Facility - Any permit unit, group of permit units , non-permitted equipment or any combination thereof which emits or may emit an Air Pollutant; and belongs to a single major industrial group in the Standard Industrial C lassification manual; and is located on a single parcel of land or on contiguous propert y within the District; and which is owned or operated by the same person or by persons under common control.

(42) Fastener – Any of various devices, including b ut not limited to, pins, collars, blots, nuts, and rivets for holding together two (2) or more obj ects or parts.1124-6 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 4324 ) Fastener Manufacturer - A Ff acility that coats Aa ircraft fasteners, such as pins, collars, bolts, nuts, and rivets, with Ss olid- Ff ilm Ll ubricants for distribution to other facilities.

( 4425 ) Fire-Resistant (Interior) Coating - A cabin interior coating that meets for civilian aircraft the Federal Aviation Administration-requir ed Ohio State University Heat Release, Fire and Burn Tests; for military aircraft , Aircraft Structure Integrity Program in MIL-STD-1530A and MIL-A-87221 (Northrop's MS-445 -3.3.2.1 and MS-445- 3.3.2.2).

(a) For civilian Aircraft, Fire-Resistant Interior Coatings are used on passenger cabin interior parts that are subject to FAA firewo rthiness requirements.

(b) For military Aircraft, Fire-Resistant Interior Coatings are used on parts that are subject to the flammability requirements of MIL-STD -1630A and MIL-A87721.

(c) For space applications, Fire-Resistant Interior Coatings are used on parts that are subject to the flammability requirements of SE-R-00 06 and SSP 30233.

(45) Flexible Primer – A Primer that meets flexibil ity requirements such as those needed for adhesive bond primed fastener heads or on surfaces expected to contain fuel. The flexible coating is required because it provides a compatible, flexible substrate over bonded sheet rubber and rubber-type coatings as wel l as a flexible bridge between the fasteners, skin, and skin-to-skin joints on outer a ircraft skins. This flexible bridge allows more topcoat flexibility around fasteners an d decreases the chance of the topcoat cracking around the fasteners. The result is bette r corrosion resistance.

( 4626 ) Flight-Test Coating - A coating applied to an Aa ircraft prior to flight testing to protect the Aa ircraft from corrosion and to provide required mark ing during flight test evaluation.

( 4727 ) Fuel-Tank Adhesive - An Aa dhesive used to bond components exposed to fuel tha t must be compatible with Ff uel- Tt ank Cc oatings

. ( 4828 ) Fuel-Tank Coating, General

-– A coating applied to a fuel tank of an Aa ircraft to protect it from corrosion and/or bacterial growth.

( 4929 ) Fuel-Tank Coating, Rapid Cure – A fuel tank coati ng with shortened curing times and decreased sensitivity to low humidity during the cu ring process.

( 5030 ) Hand Application Method - The application of Aero space Materials by manually held, non-mechanically operated equipment. Such equipmen t includes paint brushes, hand rollers, caulking guns, trowels, spatulas, syringe daubers, rags, and sponges.AVAQMD Rule 1124 1124-7

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 5131 ) High-Temperature Coating - A coating that must wi thstand temperatures of more than 350oF.

( 5232 ) High-Volume, Low-Pressure (HVLP) Spray - An Aeros pace Materials application system which is operated with air pressure of betwe en 0.1 and 10 pounds per square inch gauge (psig).

( 5333 ) Impact-Resistant Coating - A flexible coating tha t protects Aa erospace Cc omponents, such as Aa ircraft landing gear, and landing gear compartments , and other surfaces subject to impact and abrasion from runway debris.

(54) Insulation Covering – Material that is applied to foam insulation to protect the insulation from mechanical or environmental damage.

(55) Intermediate Release Coating – A thin coating applied beneath Topcoats to assist in removing the Topcoat in depainting operations and g enerally to allow the use of less hazardous depainting methods.

(56) Lacquer Coating – A clear or pigmented coating formulated with a nitrocellulose or synthetic resin to dry by evaporation without a che mical reaction. Lacquers are resoluble in their original solvent.

( 5734 ) Line-Sealer Maskant - A maskant used to cover scrib e lines in maskant in order to protect against etchant in multi-step etching proce ssing. [See Critical Use and Line Sealer Maskant.]

( 5835 ) Low-Solids Adhesive Coating, Primer oO r Sealant - An Aa dhesive coating, Pp rimer or Ss ealant which has less than one pound of solids per gallon of material. Such solids are the non-volatiles remaining after a sample is heate d at 230oF (110 o C) for one hour.

( 5936 ) Low-Solids Corrosion Resistant Primer - A corrosi on resistant polyurethane compatible Pp rimer with enhanced adhesion and rain erosion resis tance which contains no more than 45 percent (45%) solids, by weight, as applied

. (37) Maskant For Chemical Milling - A coating appl ied directly to an aerospace component to protect surface areas when chemically milling th e component. [Formatted for consistency. See Chemical Milling Maskant.]

(38) Maskant For Chemical Processing - A coating ap plied directly to an aerospace component to protect surface areas when anodizing, aging, bonding, plating, etching, and/or performing other chemical surface operations on the component. [Formatted for consistency. See Chemical Processing Maskant.]

( 6039 ) Metallized Epoxy Coating - A coating that contain s relatively large quantities of flake pigmentation for appearance and/or added protection

.1124-8 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 6140 ) Mold Release Coating – A coating applied to the s urface of a mold to prevent the molded component from sticking to the mold as it is removed.

( 6241 ) Non-Structural Adhesive - An Aa dhesive that bonds non-load-carrying Aa ircraft components in non-critical applications and is not covered in any other specialty Aa dhesive categories.

( 6342 ) Optical Anti-Reflection Coating - A coating with a low reflectance in the infrared and visible wavelength range and is used for anti-refle ction on or near optical and laser hardware.

(64) Part Marking Coating – Coatings or inks used t o make identifying markings on materials, components, and/or assemblies. These ma rkings may be either permanent or temporary.

( 6543 ) Phosphate Ester Resistant Ink – A coating that is used for surface identification or marking which inhibits phosphate ester fluid corros ion.

( 6644 ) Photolithographic Maskant - A coating applied by Pp hotoresist Oo peration(s) directly to printed circuit boards, and ceramic and similar sub strates to protect surface areas from Cc hemical Mm illing or Cc hemical Pp rocessing.

( 6745 ) Photoresist Operation - A process for the applica tion or development of photoresist masking solution on a substrate, including preparat ion, soft bake, develop, hard bake, and stripping, and can be generally subdivided as f ollows:

(a) Negative Photoresist Operation is a process whe re the maskant hardens when exposed to light and the unhardened maskant is stri pped, exposing the substrate surface for Cc hemical Mm illing or Cc hemical Pp rocessing.

(b) Positive Photoresist Operation is a process whe re the maskant softens when exposed to light and the softened maskant is stripp ed, exposing the substrate surface for Cc hemical Mm illing or Cc hemical Pp rocessing.

( 4668 ) Pre -bonding Bonding Etchant – An acid or basic substance that is used t o increase the strength of an adhesive bond by chemically altering the substrate surface morphology to increase the bonding surface area of aerospace wire coatings to the underlying insulation layer. [Modified by combining Prebonding Etchant and Wire Prebonding Etchant definitions.]

( 6947 ) Pretreatment Primer Coating - A Coatingprimer which contains no more than 12 percent (12%) solids, by weight and at least 0.5 percent (0 .5%) acid by weight, to provide surface etching and is applied directly to metal su rfaces to provide corrosion resistance, adhesion, and ease of stripping. [Moved from primer category for consistency with th e CTG definition.]AVAQMD Rule 1124 1124-9

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 7048 ) Primer - A coating applied directly to an Aa erospace Cc omponent for purposes of corrosion prevention, protection from the environme nt, functional fluid resistance and/or adhesion of subsequent coatings, Aa dhesives, or Ss ealants.

( 7149 ) Primer Compatible wW ith Rain Erosion Resistant Coating - A Pp rimer to which rain erosion resistant Tt opcoat is applied.

( 7250 ) Rain Erosion-Resistant Coating - A coating that p rotects leading edges, flaps, stabilizers, and engine inlet lips against erosion caused by rain impact during flight.

( 7351 ) Repair Coating - A coating used to recoat portion s of a product which has sustained mechanical damage to the coating following normal p ainting operations.

(52) Repair Maskant - A maskant used to cover imper fections in the maskant coat. [Specific definition not used. Critical Use and Line Sealer Maskant definition includes a repair provision.]

( 7453 ) Rework - The inspection, repair, and reconditioni ng of Aa erospace Cc omponents subject to this rule.

(75) Rocket Motor Bonding Adhesive – Adhesive used in rocket motor bonding applications.

(76) Rocket Motor Nozzle Coating – A catalyzed epox y coating system used in elevated temperature applications on rocket motor nozzles.

( 7754 ) Rollable, Brushable or Extrudable Sealant – A sin gle or multi-component polymeric material used to seal many types of joints, gaps, r emovable panels, and windows where moderate movement is expected. Such material may b e applied by rolling brushing extruding or daubing.

(78) Rubber-based Adhesive – A quick setting contac t cement that provides a strong, yet flexible bond between two mating surfaces that may be of dissimilar materials.

(55) Rubber Solution Fuel-Tank Coating - A fuel-tan k coating which performs as a sealant and protects the tank from corrosion and/or bacteri al growth and is formulated with a butadiene acrylonitrile copolymer. [Definition no longer used. See Fuel Tank CoatingGeneral or –Rapid Cure.]

( 7956 ) Scale Inhibitor

Coating - A coating that is applied to the surface of a pa rt prior to thermal processing to inhibit the formation of tena cious scale.

(80) Screen Print Ink – An ink used in screen print ing processes during fabrication of decorative laminates and decals.1124-10 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 8157 ) Sealants - Viscous semisolid materials that fill voids in order to seal out water, fuel, and other liquids and solids, and in some cases, air mo vement.
(82) Seal Coat Maskant – An overcoat applied over a maskant to improve abrasion and chemical resistance during production operations.

(83) Silicone Insulation Material – An insulating m aterial applied to exterior metal surfaces for protection from high temperatures caused by atm ospheric friction or engine exhaust. These materials differ from Ablative Coatings in th at they are not “sacrificial.”

( 8458 ) Solid-Film Lubricant - A very thin coating consis ting of a binder system containing as its chief pigment material one or more of the follo wing: molybdenum disulfide, graphite, polytetrafluoroethylene (PTFE), or other solids that act as a dry lubricant between faying surfaces.

( 8559 ) South Coast Air Quality Management District (SCAQ MD) – The air quality district created pursuant to Division 26, Part 3, Chapter 5. 5 of the California Health & Safety Code (commencing with §40400).

( 8660 ) Space - Vehicle - A vehicle designed to travel beyond the e arth's atmosphere.

(87) Specialized Function Coating – A coating that fulfills extremely specific engineering requirements that are limited in application and ar e characterized by low volume usage. This category excludes coatings covered in other Sp ecialty Coating categories.

(88) Specialty Coating – A coating that, even thoug h it meets the definition of a Primer, Topcoat, or self-priming Topcoat, has additional pe rformance criteria beyond those of Primers, Topcoats, and self-priming Topcoats for sp ecific applications. These performance criteria may include, but are not limit ed to, temperature or fire resistance, substrate compatibility, antireflection, temporary protection or marking, sealing, adhesively joining substrates, or enhanced corrosio n protection.

( 8961 ) Stencil Coating – An ink or coating that is rolle d, sprayed with an airbrush or touch-up gun, or brushed while using a template to add ident ifying letters and or numbers to Aerospace Components.

( 9062 ) Stripper - A volatile liquid applied to remove cu red Aerospace Material or their residues.

( 9163 ) Structural Adhesive - Autoclavable - An Aa dhesive used to bond load-carrying Aa ircraft components and is cured by heat and pressur e in an autoclave.

( 9264 ) Structural Adhesive, High Temperature – Autoclava ble – An Aa dhesive used to bond load-carrying Aa ircraft components which is cured by heat and press ure in an autoclave, and can withstand service temperatures a bove 450 ° F (232 ° C).AVAQMD Rule 1124 1124-11

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 9365 ) Structural Adhesive - Non-Autoclavable - An Aa dhesive cured under ambient conditions and is used to bond load-carrying Aa ircraft components or other critical functions, such as nonstructural bonding in the pro ximity of engines.

(66) Temporary Marking Coating - An ink or a coati ng used to make identifying markings, and is removed prior to delivery of the aerospace c omponent and/or assembly. [Definition removed. See Part Marking Coating.]

( 9467 ) Temporary Protective Coating - A coating applied to an Aa erospace Cc omponent to protect it from mechanical and environmental damage during manufacturing.

(95) Thermal Control Coating – A coating formulated with specific thermal conductive or radiative properties to permit temperature control of the substrate.

( 9668 ) Topcoat - A coating applied over a Pp rimer or other coating on an aerospace vehicle or component for purposes such as appearance, identification, camouflage, or protection. Topcoats that are defined as specialty coatings are not included in this definition. [Definition modified to CTG definition for clarific ation pursuant to USEPA comment, and so definition will also include clear coating C TG category.]

(69) Touch-Up Coating - A coating used to cover min or coating imperfections appearing after the main coating operation. [Definition not used. See Touch-Up Operation.]

( 9770 ) Touch-Up Operation – The application of Aerospace Materials by brush, air brush, detail HVLP spray equipment outside of a permitted paint enclosure to repair minor surface damage and imperfections after the main coa ting process. [See exemption (G)(6) for affected area exempted.]

( 9871 ) Transfer Efficiency - The ratio of the weight or volume of coating solids adhering to an object to the total weight or volume, respectively, of coating solids used in the application process, expressed as a percentage.

( 9972 ) Type I Etchant – A Cc hemical Mm illing etchant that contains varying amounts of dissolved sulfur and does not contain amines.

( 10073 ) Type II Etchant – A Cc hemical Mm illing etchant that is a strong sodium hydroxide solution containing amines.

( 10174 ) Unicoat - A coating which is applied directly to an Aa erospace Cc omponent for purposes of corrosion protection, environmental pro tection, and functional fluid resistance that is not subsequently Tt opcoated.

( 10275 ) United States Environmental Protection Agency (US EPA) – The United States Environmental Protection Agency, the Administrator of the USEPA and his or her authorized representative.1124-12 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 ( 10376 ) Volatile Organic Compound (VOC) - Any volatile co mpound containing the element carbon, excluding methane, carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, ammonium carbonate , and Ee xempt Cc ompounds as listed in 40 CFR 51.100(s) (1)

. [Definition modified for consistency with District TertButyl Acetate (tBA) policy.]

(104) Wet Fastener Installation Coating – A Primer or Sealant applied by dipping, brushing, or daubing to fasteners that are installed before t he coating is cured.

( 10577 ) Wing Coating - A corrosion-resistant coating that is resilient enough to withstand the flexing of the wings.

(78) Wire Ink - The surface identification stripe a nd mark on aerospace wire or cable which serves as an electrical insulator in the presence o f high humidity. [Definition not used. See subcategories of Wire Coating Category.]

(79) Wire Prebonding Etchant - A non-additive surfa ce treatment process to provide bondability of aerospace wire coatings to the under lying insulation layer [See “Prebonding Etchant” definition.]


### (C) Requirements

(1) VOC Content of Coatings

(a) A person shall not apply to Aa erospace Cc omponents any Aerospace Materials, including any VOC-containing materials added to the original Aerospace Materials supplied by the manufacturer, which conta in VOC in excess of the limits specified below:

VOC LIMIT Grams Per Liter of Coating Less Water and Less Exem pt Compounds Aerospace Materials: VOC Limit

PRIMERS -- General 350 Adhesion Promoter 850 Adhesive Bonding Primers -- Commercial Aircraft 250 Military Aircraft 805 Low Solids Corrosion Resistant Primer 350 Pretreatment Primer 780 Primer Compatible with Rain Erosion-Resistant Coati ng 850

COATINGS -- Antichafe Coating 420 Conformal Coating 750AVAQMD Rule 1124 1124-13

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 VOC LIMIT Grams Per Liter of Coating Less Water and Less Exem pt Compounds Electric- or Radiation-Effect Coating 800 Fire-Resistant Coating -- Civilian 650 Military 800 Flight-Test Coating -- Used on Missiles or Single Use Target Craft 420 All Other 840 Fuel-Tank Coating -- General 420 Rapid Cure 720 High-Temperature Coating 850 Impact-Resistant Coating 420 Metallized Epoxy Coating 700 Mold Release Coatings 780 Optical Anti-Reflection Coating 700 Rain Erosion-Resistant Coating 800 Scale Inhibitor 880 Space-Vehicle Coatings -- Electrostatic Discharge Protection Coating 800 Other Space-Vehicle Coating 1000 Temporary Protective Coating 250 Topcoat 420 Clear Topcoat 520 Unicoat 420 Wing Coating 750 Wire Coatings -- Electronic Wire Coating 420 Anti-Wicking 420 Pre-Bonding Etchant 420 Phosphate Ester Resistant Ink 925

ADHESIVES -- Fuel-Tank Adhesive 620 Non-Structural 250 Space Vehicle Adhesive 800 Structural Adhesive -- Autoclavable 50 High Temperature - Autoclavable 650 Non-Autoclavable 850

SEALANTS Extrudable, Rollable or Brushable 280 Other 600

MASKANTS -- For Chemical Milling For use with Type I Etchant 2501124-14 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 VOC LIMIT Grams Per Liter of Coating Less Water and Less Exem pt Compounds For use with Type II Etchant 160 For Chemical Processing 250* Photolithographic Maskant 850 Touch-up, Line-Sealer Maskant 750 * Less water exempt compounds and perchloroethylen e (PERC).

LUBRICANTS

-

- Fastener Installation

-

- Solid-Film Lubricant 8 8 0 Dry Lubricative Material 6 7 5 Fastener Lubricative Coating

-

- Solid-Film Lubricant 2 5 0 Dry Lubricative Material 1 2 0 Barrier Coating 4 2 0 Non-Fastener Lubricative Coatings

-

- Solid-Film Lubricant 8 8 0 Dry Lubricative Materials 6 7 5

SPECIALTY COATING VOC LIMITS Grams Per Liter of Coating Less Water and Less Exem pt Compounds AEROSPACE MATERIALS [Explanatory Comments, not a part of rule] VOC Limit

PRIMERS -- General [SIP category] 350 Adhesion Promoter [ Moved to coating category for consistency with CTG definition] 850 Adhesive Bonding Primers [See AVAQMD 3/20/07 Staff Report for discussion of this category] --AVAQMD Rule 1124 1124-15

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 VOC LIMIT Grams Per Liter of Coating Less Water and Less Exem pt Compounds
Commercial Aircraft 250 Military Aircraft 805 Commercial Exterior Aerodynamic Structure Primer [New CTG category. Not a subcategory of pretreatment primer] 650 Compatible Substrate Primer [New CTG category. Not a low solids corrosion resistant primer] 780 Cryogenic Flexible Primer [New CTG category. Not a subcategory of pretreatment primer] 645 Elevated Temperature Skydrol-Resistant Commercial P rimer [New CTG category. Not a subcategory of pretreatment primer ] 740 Flexible Primer [New CTG category. Not a subcategory of pretreatme nt primer] 640 Low Solids Corrosion Resistant Primer [Added in 3/20/07 amendment. CTG category] 350

Pretreatment Primer [Moved to coating category for consistency with CTG definition] 780 Primer Compatible with Rain Erosion-Resistant Coati ng [SIP category] 850

COATINGS -- Ablative Coating [New CTG category] 600
Adhesion Promoter Coating [Moved from primer category for consistency with CTG definition] 850 Antichafe Coating [SIP category] 420
Bearing Coating [New CTG category, not a subcategory of Fastener Lubricative or non-fastener lubricative coating] 620
Chemical Agent-Resistant Coating [New specialized CTG category, resistant to chemical warfare agents, not a subcate gory of topcoat] 550 Conformal Coating [SIP Category] 750
Cryoprotective Coating [New CTG category, not specific to space vehicles. Prevents ice formation] 600 Electric- or Radiation-Effect Coating [SIP category] 800
Electrostatic Discharge and Electromagnetic Interfe rence (EMI) Coating [New CTG category, not specific to space vehicles] 800 Fire-Resistant (Interior) Coating -- Civilian [SIP category] 650 Military [SIP category] 800 Space [Sub-category split out to conform to CTG definitio n] 800 Flight-Test Coating -- Used on Missiles or Single Use Target AircCraft [SIP category] 420
All Other [SIP category] 840 Fuel-Tank Coating [See AVAQMD 3/20/07 Staff Report for discussion of --1124-16 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 VOC LIMIT Grams Per Liter of Coating Less Water and Less Exem pt Compounds this category]

General 420 Rapid Cure 720 High-Temperature Coating [SIP category] 850 Impact-Resistant Coating [SIP category] 420 Intermediate Release Coating [New CTG category] 750 Lacquer Coating [New CTG category. Lacquer is not always a topcoat] 830 Metallized Epoxy Coating [SIP category] 700 Mold Release Coatings [Added in 3/20/07 amendment. CTG category] 780 Optical Anti-Reflection Coating [SIP category] 700
Part Marking Coating [New CTG category. Part marking can be permanent or temp. Remove exemption (G)(9) and (G) (11)] 850
Pretreatment Coating [Moved from primer category for consistency with CTG definition] 780 Rain Erosion-Resistant Coating [SIP category] 800
Rocket Motor Nozzle Coating [New CTG category. Not a subcategory as it is very specific to withstand heat, pressure and magnetic forces] 660 Scale Inhibitor Coating [SIP category] 880

Space-Vehicle Coatings, Other: does not include Ele ctric Discharge and EMI Protection Coating or Fire Resistant (Interior) Coating [CTG does not distinguish between space and other. SIP catego ry] 1000 Electrostatic Discharge and Electromagnetic Int erference (EMI) Protection Coating [This category is not specific to space vehicles. Alphabetized into general table] 800
Fire-Resistant (Interior) Coating [This category is not specific to space vehicles. Alphabetized into general table ] 800 Other Space-Vehicle Coating [See Space Vehicle Coatings, Other, above] 1000 Specialized Function Coating [New CTG category] 890 Temporary Protective Coating [SIP category] 250 Thermal Control Coating [New CTG category] 800 Topcoat [Definition updated to include clear coating catego ry from CTG] -- Clear [SIP category] 520 Epoxy Polyamide [New CTG category] 660
Other [Reorganized for consistency with rest of table for mat] 420 Unicoat Coating [SIP category] 420 Wet Fastener Installation Coating [New CTG category] 675 Wing Coating [SIP category] 750 Wire Coatings [SIP categories]AVAQMD Rule 1124 1124-17

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 VOC LIMIT Grams Per Liter of Coating Less Water and Less Exem pt Compounds Electronic Wire Coating 420 Anti-Wicking 420 Pre-Bonding Etchant 420 Phosphate Ester Resistant Ink 925

ADHESIVES -- Commercial Interior Adhesive [New CTG category, not covered by nonstructural category] 760 Cyanoacrylate Adhesive [New CTG category] 1020
Fuel-Tank Adhesive [SIP category] 620
Non-Structural Adhesive [SIP category] 250 Rocket Motor Bonding Adhesive [New CTG category, not covered by space vehicle adhesive] 890
Rubber-based Adhesive [New CTG category] 850 Space Vehicle Adhesive [SIP category] 800 Structural Adhesive [See AVAQMD 3/20/07 Staff Report for discussion of this category] -- Autoclavable 50 High Temperature - Autoclavable 650
Non-Autoclavable 850

SEALANTS -- Extrudable, Rollable, or Brushable or Extrudable Se alant [Added in 3/20/07 amendment. CTG category. Restructured to m atch order in definition]] 280

Fastener Sealant [Inadvertently removed by SCAQMD. This limit is in SIP version of Rule] 675
Other [SIP category] 600

MASKANTS -- Bonding Maskant [New CTG category. Definition of Chemical Milling Maskants says it is not bonding maskant] 1230

Critical Use and Line Sealer Maskant [Renamed Touch-up, Line-sealer Maskant category for consistency with CTG] 750 For Chemical Milling Maskant [Added in 3/20/07 amendment. CTG category] For use with Type I Etchant 250 For use with Type II Etchant 160
For Chemical Processing *Less water, exempt co mpounds and perchloroethylene (PERC) 250*1124-18 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 VOC LIMIT Grams Per Liter of Coating Less Water and Less Exem pt Compounds Photolithographic Maskant [SIP category] 850 Touch-up, Line-Sealer Maskant 750

* Less water exempt compounds and perchloroethylen e (PERC).

Seal Coat Maskant [New CTG category. Definition of Chemical Milling Maskants says it is not bonding maskant] 1230

LUBRICANTS -- Fastener Installation Lubricant (applied at time of aircraft/component assembly) [Parenthetical is for clarification. SIP categorie s] -- Solid-Film Lubricant 880 Dry Lubricative Material 675
Fastener Lubricative Coating (applied at time of fa stener manufacture) [Parenthetical is for clarification. SIP categorie s] -- Solid-Film Lubricant 250 Dry Lubricative Material 120 Barrier Coating 420
Non-Fastener Lubricative Coatings (applied at time of non-fastener manufacture) [Parenthetical is for clarification. SIP categorie s] -- Solid-Film Lubricant 880 Dry Lubricative Materials 675

OTHER -- Caulking and Smoothing Compound [New CTG category] 850 Corrosion Prevention Compound System [New CTG category] 710 Insulation Covering [New CTG category] 740 Screen Print Ink [New CTG category not covered specifically by graph ic arts rules] 840 Silicone Insulation Material [New CTG category for aerospace industry specific material] 850

[Added “Other” category to include materials that d o not conform to existing categories.

New categories for consistency with CTG: Commercial Exterior Aerodynamic Structure Primer; Compatible Substrate Primer; Cryogenic Flex ible Primer; Elevated Temperature Skydrol-Resistant Commercial Primer; Fl exible Primer; Ablative Coating; Adhesion Promoter; Bearing Coating; Chemic al Agent-Resistant Coating (CARC); Cryoprotective Coating; Electrostatic Disch arge and ElectromagneticAVAQMD Rule 1124 1124-19

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 Interference (EMI) Coating; Fire-Resistant Coating (Space); Intermediate Release

Coating; Lacquer; Part Marking Coating; Pretreatmen t Coating; Rocket Motor Nozzle Coating; Specialized Function Coating; Thermal Cont rol Coating; Topcoat (Epoxy Polyamide); Wet Fastener Installation Coating; Comm ercial Interior Adhesive; Cyanoacrylate Adhesive; Rocket Motor Bonding Adhesi ve; Rubber-based Adhesive; Fastener Sealant; Bonding Maskant; Critical Use and Line Sealer Maskant; Seal Coat Maskant; Caulking and Smoothing Compound; Corrosion Prevention System Compound; Insulation Covering; Screen Print Ink; Si licone Insulation Material.

Changes and clarifications derived from CTG Control of Volatile Organic Compound Emissions from Coating Operations at Aerospace Manu facturing and Rework Operations, EPA-453/R-97-004, December 1997 unless otherwise noted.]

(b) Documents shall be provided to the the APCO demonstrating that the Unicoat is being used in lieu of the application of a Pp rimer and Tt opcoat, and the applicant must receive written approval for the use of the Unicoat specifying the conditions of application from the APCO.

(c) For Ll ow- Ss olids Aa dhesives, Cc oatings, Pp rimers or Ss ealants, the appropriate limits in subparagraph ( Cc )(1)(a) shall be expressed in grams of VOC per lite r of material.

(2) Solvent Use, Clean Up, and Stripping

(a) A person shall not use VOC-containing materials for cleaning or clean up, excluding coating stripping and equipment cleaning unless:

(i) The VOC composite partial pressure is 45 mm Hg or less at a temperature of 20 o C (68 o F); or (ii) The material contains 200 grams or less of VOC per liter of material.

(b) A person shall not use Ss tripper on Aa erospace Cc omponents unless:

(i) It contains less than 300 grams of VOC per lite r of material; or (ii) The VOC composite partial pressure is 9.5 mm H g (0.18 psia) or less at
20 o C (68 o F).

(c) A person shall not atomize any solvent into ope n air.

(3) Equipment Cleaning Operations

Cleaning of Cc oating Aa pplication Ee quipment shall comply with provisions of Rule 1171 – Solvent Cleaning Operations

. (4) Storage of VOC-Containing Materials1124-20 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 All VOC containing material, used or unused, includ ing but not limited to surface coatings, thinners, cleanup solvents, or surface pr eparation materials, and all solvent laden cloth and paper, shall be stored in non-absor bent, non-leaking containers which shall be kept closed at all times except during ext raction or introduction of material for mixing, use or storage.

(5) Transfer Efficiency

No person or Ff

acility shall apply Aerospace Material s unless it is applied with properly operating equipment or controlled, according to ope rating procedure specified by the equipment manufacturer or the APCO, and by the use of one of the following methods:

(a) Ee lectrostatic application; or
(b) Ff low coater; or
(c) Rr oll coater; or
(d) Dd ip coater; or
(e) Hh igh- Vv olume, Ll ow- Pp ressure (HVLP) Ss pray; or
(f) Hh and Aa pplication Mm ethods; or

(g) Ss uch other alternative application methods as are de monstrated to the APCO, using District-approved procedures, to be capable o f achieving at least equivalent Tt ransfer Ee fficiency to method (C)(5)(e) and for which written approval of the APCO has been obtained; or

(h) Approved air pollution control equipment under paragraph (C)(6).

(6) Control Equipment

Owners and/or operators may comply with provisions of paragraphs (C)(1), (C)(2), and (C)(5) by using approved air pollution control equi pment provided that the VOC emissions from such operations and/or materials are reduced in accordance with provisions of (a) and (b) below

. (a) The control device shall reduce emissions from an emission collection system by at least 95 percent (95%), by weight, or by redu cing the output of the air pollution control device to less than 50 PPM ppm calculated for carbon with no dilution.

(b) The owner/operator demonstrates that the system collects at least 90 percent (90%), by weight, of the emissions generated by the sources of emissions.AVAQMD Rule 1124 1124-21

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 (7) Prohibition of Solicitation of Violations

(a) A person shall not solicit or require any other person to use, in the District, any Aerospace Material or combination of Aerospace Mate rials to be applied to any Aa ircraft component subject to the provisions of this rule that does not meet the limits and requirements of this rule, or of an Alte rnative Emission Control Plan (AECP) approved pursuant to the provisions of (C)(8 ).

(b) The requirements of this paragraph shall apply to all written or oral agreements executed or entered into after April 3, 1987.

(8) Alternative Emission Control Plans

(a) An owner/operator may comply with the provision s of paragraph (C)(1) by means of an Alternative Emission Control Plan pursu ant to Rule 108 – Alternative Emission Control Plans

. 

### (D) Recordkeeping and Reporting Requirements

(1) Recordkeeping

(a) Records shall be maintained pursuant to the req uirements of Rule 109 – Recordkeeping for Volatile Organic Compound Emissio ns

. (2) Reporting

(a) Persons who perform qualification acceptance te sting on Aerospace Materials with a future compliance date for use in the Distri ct shall, on January 1 and July 1 of each year, submit a status report describing t he progress toward the development of Aerospace Materials which satisfy fu ture compliance dates. These reports shall contain, at a minimum:

(i) Manufacturer, product number, VOC content, and applicable coating category for each of the test candidates; (ii) Test expenditures for the period; (iii) Progress on candidates tested during this per iod ;. (iv) Approvals received for coatings which comply w ith future compliance dates ; and. (v) Volume of coatings used in each coating categor y for which there is a future compliance date.

(b) Facilities testing coatings in the same coating category may submit joint status reports. Once compliance with future compliance da tes is achieved and a status report is submitted documenting such, no further st atus reports need be submitted.1124-22 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 

### (E) Compliance Procedures and Test Methods

(1) Calculations

(a) For the purpose of determining compliance with VOC content limits specified in section (C), grams of VOC per liter of Aerospace Ma terial shall be determined by using the following formulas as applicable:

(i) For Aerospace Mm aterials not containing reactive diluents, grams of VOC per liter of coating, less water and less Ee xempt Cc ompounds shall be determined as follows:

   ⁄ = − −
  −  −  Grams of VOC per Liter of W s – W w – W es Coating, Less Water and Less = Exempt Compounds V m – V w - V es

Where: G_(VOC⁄LoC) = Grams of VOC per Liter of

Coating, Less Water and Less Exempt Compounds W s = Weight of volatile compounds in

grams. W w = Weight of water in grams. W es = Weight of Ee xempt Cc ompounds in

grams. V m = Volume of material in liters. V w = Volume of water in liters. V es = Volume of Ee xempt Cc ompounds

in liters.

(ii) For Aerospace s Materials that contain reactive diluents, grams of VOC per liter of coating, less water and less Ee xempt Cc ompounds shall be determined as follows:

Grams of VOC per Liter of W s – W w – W es Coating, Less Water and Less = Exempt Compounds V m – V w - V es

Where: W s = Weight of volatile compounds evolved

during curing and analysis, in grams.AVAQMD Rule 1124 1124-23

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 W w = Weight of water evolved during curing and analysis, in grams. W es = Weight of Ee xempt Cc ompounds evolved

during curing and analysis, in grams. V m = Volume of material prior to reaction, in

liters. V w = Volume of water evolved during curing

and analysis, in liters. V es = Volume of Ee xempt Cc ompounds evolved

during curing and analysis, in liters.

(b) Total grams of VOC per liter of Aerospace Mater ial shall be determined using the following formula:

Grams of VOC per Liter of W s – W w – W es Coating = V m

Where: W s = Weight of volatile compounds in grams. W w = Weight of water in grams. W es = Weight of Ee xempt Cc ompounds in grams. V m = Volume of material in liters.

(c) The VOC composite partial pressure shall be det ermined as follows:

  =  

  ×  

 +  + ∑ 

  ! "# !

"#

Wi

x VP i
n MW i PPc = Σ

i=1 W w W e n W i

+ + Σ MW w MW e i=1 MW i

Where: W i = Weight of the “i”th VOC compound, in grams. W w = Weight of water, in grams. W e = Weight of Ee xempt Cc ompound, in grams MW i = Molecular weight of the “i”th VOC compound, in1124-24 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 grams per gram-mole. MW e = Molecular weight of Ee xempt Cc ompound in grams per

gram-mole. PP c = VOC composite partial pressure at 20 ° C, in mm Hg. VP i = Vapor pressure of the “i”th VOC compound at 20 ° C, in

mm Hg.

(2) VOC Content of Aerospace Materials

(a) To determine the physical properties of an Aero space Material in order to perform the calculations in subsection (E)(1) , the following reference methods shall be used:

(i) EPA Reference Method 24 (Determination of Volat ile Matter Content, Water Content, Density Volume Solids, and Weight So lids of Surface Coatings, Code of Federal Regulations Title 40, Par t 60, Appendix A). a. Analysis done according to EPA Method 24 shall u tilize ASTM Method D-2369-95 (Standard Test Method for Volatile Content of Coatings) , referenced in EPA Method 24. [Complete title added to meet the enforceability requirement of CAA 110(a)(2)(A) per EPA’s “Little Blue Book” pursuant to USEPA comment 4/23/13.] b. The exempt solvent content shall be determined u sing SCAQMD Test Methods 302 -91 (Distillation of Solvents from Paints, Coatings and Inks, February 1993) and 303 -91 (Determination of Exempt Compounds, August 1996) (SCAQMD "Laboratory Methods of Analysis for Enforcement Samples" manual ) or; [Complete title added to meet the enforceability re quirement of CAA 110(a)(2)(A) per EPA’s “Little Blue Book” pursu ant to USEPA comment 4/23/13.] (ii) SCAQMD Test Methods 302, 303, and 304 (SCAQMD "Laboratory Methods of Analysis for Enforcement Samples" manual ).

(b) The following classes of compounds listed below will be analyzed as Ee xempt Cc ompounds for compliance with subdivision (C), only at such time as manufacturers specify which individual compounds ar e used in the coating formulations and identify the test methods, which, prior to such analysis, have been approved by the USEPA and the SCAQMD, that can be used to quantify the amounts of each Ee xempt Cc ompound.

(i) Cyclic, branched, or linear, completely fluorin ated alkanes; cyclic, branched, or linear, completely fluorinated ethers with no unsaturations; cyclic, branched, or linear, completely fluorinated tertiary amines withAVAQMD Rule 1124 1124-25

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 no unsaturations; and sulfur-containing perfluoroca rbons with no unsaturations and with sulfur bonds only to carbon and fluorine.

(3) Test Methods

(a) Efficiency of the control device shall be deter mined according to EPA Method 25, 25A, or SCAQMD Test Method 25.1 (Total Gaseous Non-Methane Emissions, February 1991) or SCAQMD Test Method 25.3 (Clean-Fueled Combustion Sources, March 2000) . Emissions determined to exceed any limits established by this rule through the use of either of the above-referenced test methods shall constitute a violation of this rule. [Complete title added to meet the enforceability requirement of CAA 110(a)(2)(A) per EPA’s “Little Blue Book” pursuant to USEPA comment 4/23/13.]

(b) The capture efficiency of the emissions collect ion system shall be determined by the USEPA method 204A-F and the most recent version of USEPA’s Guidelines for Determining Capture Efficiency or any other method approved by the USEPA, the California Air Resources Board, and the SCAQMD.

(c) The Tt ransfer Ee fficiency of alternative coating application method s shall be determined in accordance with the SCAQMD method "Sp ray Equipment Transfer Efficiency Test Procedure for Equipment Us er, May 24, 1989".

(d) The identity and quantity of components in solv ents shall be determined in accordance with SCAQMD test method 308 -91 (Quantitation of Compounds by Gas Chromatography , February 1993 ) contained in the SCAQMD "Laboratory Methods of Analysis for Enforcement Samples" manual . The VOC composite partial pressure is calculated using the equation i n paragraph (b)(63)(E)(1)(c)

. [Complete title added to meet the enforceability re quirement of CAA 110(a)(2)(A) per EPA’s “Little Blue Book” pursuant to USEPA comment 4/23/13. Cross reference corrected pursuant to USE PA comment 4/23/13.]

(e) Multiple Test Methods

(i) When more than one test method or set of test m ethods are specified for any testing, a violation of any requirement of this rule established by any one of the specified test methods or set of test me thods shall constitute a violation of the rule.

(f) Any applicable alternative test method may be u sed so long as such method has been approved by USEPA, CARB and the APCO.1124-26 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 

### (F) Administrative Requirements

(1) Rule 442 Applicability

(a) Any Aerospace Material or Ff acility which is exempt from all or a portion of this rule, shall comply with the provisions of Rule 442 – Usage of Solvents

. [Title added pursuant to USEPA comment 4/23/13.]


### (G) Exemptions

(1) The provisions of paragraph (C)(1) of this rule shall not apply to Aerospace Materials with separate formulations that are used in volumes of less than 20 gallons per year provided that the total of all such formulations ap plied annually at a Ff acility is less than 200 gallons.

(2) The provisions of subdivision (C) of this rule shall not apply to a Ff acility which uses a total of less than three gallons of VOC-containing Aerospace Materials on each and every day of operation.

(3) The provisions of paragraphs (C)(1) and (C)(5) of this rule shall not apply to incidental corrosion maintenance Rr epair Cc oating operations at military Ff acilities, provided that the coating use at any maintenance repair location within the Ff acility does not exceed 1.5 gallons per day, and the total coating usage fo r such operations at the Ff acility does not exceed five (5) gallons per day.

(4) The provisions of subparagraph (C)(2)(a) shall not apply to Ss pace Vv ehicle manufacturing.

(5) The provisions of paragraph (C)(1) shall not ap ply to clear or translucent coatings applied on clear or transparent substrates.

(6) The provisions of paragraph (C)(5) shall not ap ply to Touch-up Operations and Ss tencil Cc oatings provided that the Touch-up Operations and Ss tencil Cc oatings do not exceed 25 sq. ft. per Aa ircraft. [This exemption further defines Touch-up Operations by defining the affected area.

(7) The provisions of paragraph (C)(1) shall not ap ply to the recoating of assembled Aa ircraft at Rr ework facilities if original coating formulations a re used.

(8) The provisions of paragraph (C)(1) shall not ap ply to Aa dhesives with separate formulations that are used in volumes of less than ten gallons per year.AVAQMD Rule 1124 1124-27

Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 (9) The provisions of paragraph (C)(5) shall not be applied to the application of materials marking coatings. [Exemption removed for consistency with CTG categor y of Part Marking Coating, pursuant to USEPA comment 4/23/13. ]

( 109 ) The provisions of subdivision (C) shall not apply to laboratories which apply Aerospace Materials to test specimens for purposes of researc h, development, quality control, and testing for production-related operations.

(11) The provisions of subdivision (C) shall not ap ply to the application of temporary marking coatings. [Exemption removed for consistency with CTG categor y of Part Marking Coating.]

( 1210 ) The provisions of paragraph (C)(2) of this rule d o not apply to the surface cleaning of solar cells, fluid systems, avionic equipment, and laser optics.

( 1311 ) The provisions of subdivision (D)(1) and (C)(5) s hall not be applied to the application of materials that contain less than 20 g/L of VOC p er liter of material.

( 1412 ) The provisions of paragraph (C)(5) shall not appl y to the use of materials dispensed from airbrush operations provided that the paint re servoir on the air brush is 8 oz or less and that the total amount of coating used for Aa ir Bb rush Oo perations at the Facility does not exceed five (5) gallons per year.

( 1513 ) The provisions of this rule shall not apply to Aa erosol Cc oating Pp roducts.

See SIP Table at http://www.avaqmd.ca.gov/Modules/S howDocument.aspx?documentid=921

[SIP: Submitted as amended 3/20/07 on _____; Subm itted as amended 12/13/96 on 8/1/97 and approved for SCAQMD area only 8/17/98, 63 FR 43884; Approved 5/6/96, 61 FR 20136, 40 CFR 52.220(c)(215)(I)(A)(5); Approved 1/24/85, 50 FR 33 38, 40 CFR 52.220(c)(154)(vii)(A); Approved 9/28/81, 46 FR 47451, 40 CFR 52.220(c)(58)(ii)(B)]1124-28 AVAQMD Rule 1124 Aerospace Assembly and Component Manufacturing Operations D2: 06/26/13 This page intentionally left blank.AVAQMD Rule 1124 B

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Final Staff Report, 09/20/13 

### APPENDIX "B" PUBLIC NOTICE DOCUMENTS

1. Proof of Publication for Notice of Public Hearing – Antelope Valley Press, 6/14/2013B-2 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.AVAQMD Rule 1124 B

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Final Staff Report, 09/20/13B-4 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.AVAQMD Rule 1124 C

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Final Staff Report, 09/20/13 

### APPENDIX "C"

PUBLIC COMMENTS AND RESPONSES

1. Preliminary USEPA comment email, 4/23/2013 2. Transmittal of EPA Rule Review Comments, June 13 , 2013 3. ARB Staff Rule Review Results, June 18, 2013C-2 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.AVAQMD Rule 1124 C

- 3

Final Staff Report, 09/20/13 Hi Tracey, Here are my preliminary comments. I will formalize in a comment letter. Please let me know if there is anything that you want to discuss before I do that:

• Section (A) General : No Comments

• Section (B) Definitions: We note that several new definitions, many directly from the CTG, have been added. The following are our comments: 1. Subsection (54) Metalized Epoxy Coating – CARB c omment from 6/29/01 has not been addressed 2. Subsection (56) Non-Structural Adhesive – CARB c omment from 6/29/01 has not been addressed 3. Subsection (83) Stencil – CARB definition from 6 /29/01 comment indicates a limited airbrush capacit y of 8 oz. Consider adding this to definition 4. Subsection (90) Topcoat – The definition in the CTG adds a caveat that “specialty coatings are not included in the definition of topcoat. Consider adding this cla rification.

• Section (C) Requirements: We note that several new categories from the CTG, have been added. A table outlining the categories and how the limits compare to either the CTG or the SCAQMD rule 1124 is attached for yo ur reference. We have no further comments on the limit s table but recommend that all CTG categories be in cluded in the event that these coatings may be used in the Di strict in the future. Other comments on this sectio n are as follows: 1. (C)(6)(b) - CARB comment from 6/29/01 asking th at the method of determining 90% collection be adde d has not been addressed

• Section (E) Compliance Procedures and Test Methods : Several of our previous comments have not been addressed: 1. (E)(2)(a) a – Please add the complete title of t he ASTM D2369-95, “Standard Test Method for Volatil e Content of Coatings”. This information is required to meet the enforceability requirement of CAA 110(a)(2)(A) per EPA’s “Little Blue Book.” 2. (E)(2)(a) b – Please use the complete EPA versio n number of the SQACMD methods and include the comp lete title for SCAQMD Method 302-91, “Distillation of So lvents from Paints, Coatings and Inks,” February 19 93 and SCAQMD Method 303-91, “Determination of Exempt Comp ounds,” August 1996. This information is required t o meet the enforceability requirement of CAA 110(a)(2 )(A) per EPA’s “Little Blue Book.” 3. (E)(3)(a) – Please use the complete EPA version number of the SQACMD methods and include the comple te title for SCAQMD Method 25.1, “Total Gaseous Non-Me thane Emissions,” February 1991 and SCAQMD Method 25.3, “Clean-Fueled Combustion Sources,” Mar ch 2000. This information is required to meet the enforceability requirement of CAA 110(a)(2)(A) per EPA’s “Little Blue Book.” 4. (E)(3)(d) – Please use the complete EPA version number of the SQACMD methods and include the comple te title for SCAQMD Method 308-91, “Quantitation of Co mpounds by Gas Chromatography,” February 1993. This information is required to meet the enforceability requirement of CAA 110(a)(2)(A) per EPA’s “Little Blue Book.” 5. (E)(3)(d) - Please correct the erroneous refere nce to “...using the equation in paragraph (E)(1)(c). ”

• (F)(1)(a) – Please provide the title of referenced Rule 442: “Usage of Solvents.”

• Section (G) Exemptions: 1. (G)(6) – We note that the limitations of touchup s have been defined as < 25 sq. ft. This may satis fy the CARB request to further define “Touch-Up Coating” (now c hanged to “Touch-Up Operations”) since it defines t he affected area. 2. (G)(9) – Although this exemption is the same as that in the SCAQMD Rule 1124, it is noted that the exemption for “Temporary Part Marking” has been removed since the category of “Part Marking” coating has been ad ded to (C)(1). Doesn’t this also apply to the materials part marking coatings of this paragraph?

All best regards,

Adrianne AIR-4 1. EPA Preliminary Comments, 4/23/13C-4 AVAQMD Rule 1124 Final Staff Report, 09/20/13 Section (B)

1. Upon review of this CARB comment made to the SCA QMD, SCAQMD responded in the following manner: The appendix to 40 CFR-Chapter I -Part 63 (Aerospace NESHAP) also defines a metallized epoxy coating as a coating that contains relatively large quantities of flake pigmentation for appearance and/or added protection. Staff would pr efer delaying a change to this definition until suc h time that it can be further developed with input fr om U.S. EPA and industry to make it more definitive

. EPA agreed that this comment does not need to be ad dressed at this time based on the SCAQMD
response.
2. Upon review of this CARB comment to the SCAQMD, SCAQMD responded in the following manner: The appendix to 40 CFR-Chapter I-Part 63 ( Aerospace NESHAP) also defines a nonstructural adhesive in the same manner, however, it adds the language that these adhesives are among those that are "not covered in any other specialty adhesive categories". Staff recommends appending the definition to include the above EPA language fo r added clarity.

The language from the SCAQMD response is already in cluded in our rule version.

3. Rule subsection (G)(6) provides parameters for t ouch-up operations and stencil coating operations exemption as applies to transfer efficie ncy.
4. Recommended language has been added to definitio n of “Topcoat” (B)(90).

Section (C)

All CTG categories have been included unless it is shown that they are covered by an existing category in the rule.

1. Subsection (E)(3)(b) provides a reference for de termining capturing efficiency of the emissions collection system.

Section (E)

1. Title has been added as requested.

2. Version numbers and titles have been added as re quested.

3. Version numbers and titles have been added as re quested.

4. Version numbers and titles have been added as re quested.

5. Rule citation has been corrected. 1. District Response to EPA Preliminary Comments, 4 /23/13AVAQMD Rule 1124 C

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Final Staff Report, 09/20/13 Section (F)(1)(a)

Rule title has been added.

Section (G)

1. AVAQMD agrees that this limitation helps satisfy the CARB request made to the SCAQMD to further define touch-up operations.

2. Both exemptions have been removed for consistenc y with the part marking coating category as requested.C-6 AVAQMD Rule 1124 Final Staff Report, 09/20/13 1.

4.

5. 2.

3. 2. Transmittal of EPA Rule Review Comments, 06/13/ 13AVAQMD Rule 1124 C

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Final Staff Report, 09/20/13 1. MDAQMD Rule 1118 – Aerospace Vehicle Parts and Products Coating Operations as adopted 10/28/96 has a limit of 700 grams/liter for Structu ral Non-autoclavable Adhesive. According to the Staff Report for this rule adoption, the definition and VOC limit for this category were derived from SCAQMD Rule 1124 as amended January 13, 1995. The V OC limit in SCAQMD Rule 1124 as amended January 13, 1995 for Adhesives, Structural, Non-Autoclavable was 850 grams/liter (the coating category in SCAQMD Rule 1124 below Adhesive s, Structural, Non-Autoclavable is Optical Anti-Reflective Coating with a VOC limit of 700, an d the District assumes there was a typographical error when the Structural Non-autoclavable Adhesive was input). It is not evident that there is any basis for the lower VOC limit of 700 for Structural Non-autoclavable Adhesives in MDAQMD Rule 1118, including no use basis by sources in the MDAQ MD. The limit of 850 for this category is included in the current SIP approved versions of SJ VUAPCD Rule 4605 (76 FR70886, 11/16/2011), SCAQMD Rule 1124 (67 FR 52611, 8/13/2002), SBCAPCD Rule 337 (78 FR 21538, 4/11/2013), as well as the CTG. These approvals are subsequent to the MDAQMD SIP approval (63 FR 43884, 8/17/1998). The AVAQMD will retain the existing li mit of 850 grams/liter for Structural Nonautoclavable Adhesive based on these conclusions.

2. Generally, The AVAQMD is not required to use SC AQMD or SJVUAPCD limits because both of these districts are extreme nonattainment for ozone and require BACT level rules. Unless these are clearly RACT limits, the AVAQMD chooses to retain t he existing limit of 850 grams/liter for Adhesion Promoter Coating.

3. MDAQMD Rule 1118 – Aerospace Vehicle Parts and Products Coating Operations as adopted 10/28/96 has a limit of 500 grams/liter for Chemica l Agent-Resistant Coating. According to the Staff Report for this rule adoption, the definition and V OC limit for this category were derived from the CTG. The VOC limit in the CTG for Chemical Agent-R esistant Coating is 550 grams/liter. The District assumes there was a typographical error wh en the Chemical Agent-Resistant Coating limit was input. It is not evident that there is any basis f or the lower VOC limit of 500 grams/liter for Chemi cal Agent-Resistant Coating, including no use basis by sources in the MDAQMD. The limit of 550 grams/liter for this category is included in the cu rrent SIP approved versions of SJVUAPCD Rule 4605, SBCAPCD Rule 337, and the CTG (no limit for C ARC in SCAQMD Rule 1124). These approvals are subsequent to the MDAQMD SIP approval (63 FR 43884, 8/17/1998). The AVAQMD will retain the existing limit of 550 grams/liter f or Chemical Agent-Resistant Coating based on these conclusions.

4. Generally, The AVAQMD is not required to use SCA QMD or SJVUAPCD limits because both of these districts are extreme nonattainment for ozone and require BACT level rules. Unless these are clearly RACT limits, the AVAQMD chooses to retain t he existing limit of 840 grams/liter for Flight Test Coating – All Other.

5. A comparison of SJVUAPCD and AVAQMD Lubricant l imits below indicate that the coating categories and limits are identical (except for the additional category of Fastener Installation Lubricant (applied at time of aircraft/component assembly) - Dry Lubricative Material in the AVAQMD rule). 2. District response to EPA Rule Review Comments, 0 6/13/13C-8 AVAQMD Rule 1124 Final Staff Report, 09/20/13 The AVAQMD does not agree that the coating limits a re different for the Solid-Film subcategory of the Fastener Installation category between the SJVU APCD and AVAQMD rules. See table below.

SJVUAPCD Coating Category SJVUAPCD 4605 AVAQMD Coating Category AVAQMD 1124 Barrier Topcoat (Coating) 420 Fastener Lubricative Coating (applied at time of fastener manufacture) - Barrier Coating 420

Dry Lubricative Materials a. Fastener Manufacturing 120 Fastener Lubricative Coating (applied at time of fastener manufacture) - Dry Lubricative Material 120

b. Nonfastener Manufacturing 675 Non-Fastener Lubr icative Coatings (applied at time of non-fastener manufacture) -Dry Lubricative Materials 675

Fastener Installation Lubricant (applied at time of aircraft/component assembly) - Dry Lubricative Material 675

Solid Film Lubricants a. Fastener Manufacturing 250 Fastener Lubricative Coating (applied at time of fastener manufacture) - Solid-Film Lubricant 250

b. Fastener Installation 880 Fastener Installation Lubricant (applied at time of aircraft/component assembly) - Solid-Film Lubricant 880

c. Nonfastener Manufacturing 880 Non-Fastener Lubr icative Coatings (applied at time of non-fastener manufacture) - Solid-Film Lubricant 880

USEPA appears to be confusing Solid Film Lubricants applied at the time of aircraft component assembly or Non-fastener manufacture limits (curren tly 880 grams/liter) with Fastener Lubricative Coatings applied at time of manufacture (currently 250 grams/liter).AVAQMD Rule 1124 C

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Final Staff Report, 09/20/13 3. ARB Staff Rule Review Results, 06/18/13C-10 AVAQMD Rule 1124 Final Staff Report, 09/20/13 No response required. 3. District Response to ARB Staff Rule Review Resu lts, 06/18/13AVAQMD Rule 1124 D

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Final Staff Report, 09/20/13 

### APPENDIX "D"

CALIFORNIA ENVIRONMENTAL QUALITY ACT

DOCUMENTATION (to be included as available)

1. Notice of Exemption – Los Angeles CountyD-2 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.AVAQMD Rule 1124 D

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Final Staff Report, 09/20/13D-4 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.AVAQMD Rule 1124 E-1

Final Staff Report, 09/20/13 

### APPENDIX "E" BIBLIOGRAPHY

The following documents were consulted in the prepa ration of this staff report and the proposed amendment of Rule 1124:

1. SCAQMD Rule 1124 – Aerospace Assembly and Component Manufacturing Oper ations
, Amended January 13, 1995. 2. SCAQMD Rule 1124 – Aerospace Assembly and Component Manufacturing Oper ations
, Amended December 13, 1996. 3. SCAQMD Staff Report: Proposed Amended Rule 1124 – Aerospace Assembly and Component Manufacturing Operations, August 2001. 4. AVAQMD Rule 1124 – Aerospace Assembly and Component Manufacturing Oper ations
, Amended March 20, 2007. 5. Control of Volatile Organic Compound Emissions f rom Coating Operations at Aerospace Manufacturing and Rework Operations, EPA-453/R-97-0 04, December 1997. 6. Subpart GG – National Emission Standards for Aer ospace and rework Facilities, 60 FR 45956, September 1, 1996.E-2 AVAQMD Rule 1124 Final Staff Report, 09/20/13 This page intentionally left blank.