CALIFORNIA AIR RESOURCES BOARD 

SIP COMPLETENESS CHECKLIST 

(Electronic Format) 

*** TO BE COMPLETED BY DISTRICT AND RETURNED TO ARB *** 

All rules submitted to the EPA as State Implementation Plan (SIP) revisions must be supported by certain information 

and documentation for the rule packages to be deemed complete for review by the EPA. Rules will not be evaluated for 

approvability by the EPA unless the submittal packages are complete. To assist you in determining that all necessary 

materials are included in rules packages sent to the ARB for submittal to the EPA, please fill out the following form and 

include it with the rule package you send ARB. See the ARB's Guidelines on the Implementation of the 40 CFR 51, 

Appendix V, for a more detailed explanation than is provided here. Adopted rules and rule amendments should be 

checked against U.S. EPA's Guidance Document for Correcting Common VOC & Other Rule Deficiencies (Little Blue 

Book, August 21, 2001) to ensure that they contain no elements which will result in disapproval by EPA. 

District: Sacramento Metropolitan Air Quality Management District

Rule No: 456

Rule Title: Aerospace Assembly and Component Coating Operations

Date Adopted or Amended: Amended on July 23, 1998 and October 23, 2008

ADMINISTRATIVE MATERIALS 

Note: All documents should be in electronic format. Items that have signatures, initials, or stamps may be scanned. 

 Not 

Attached Attached N/A

 COMPLETE COPY OF THE RULE: Provide an unmarked copy of the entire 

rule as adopted or amended by your District Board. 

 UNDERLINE AND STRIKEOUT COPY OF THE RULE: If an amended rule, 

provide a complete copy of the rule indicating in underline and strikeout 

format all language which has been added, deleted, or changed since the rule 

was last adopted or amended. 

 COMPLETE COPY OF THE REFERENCED RULE(S): For any rule which 

includes language specifically referencing another rule, a copy of that other 

rule must also be submitted, unless it has already been submitted to EPA as 

part of a previous SIP submittal. 

 PUBLIC NOTICE EVIDENCE: Include a copy of the local newspaper clipping 

certification(s), stating the date of publication, which must be at least 30 days 

before the hearing. As an alternative, include a copy of the actual published 

notice of the public hearing as it appeared in the local newspaper(s). In this 

case, however, enough of the newspaper page must be included to show the 

date of publication. The notice must specifically identify by title and number 

each rule adopted or amended. 

 RESOLUTION/MINUTE ORDER: Provide the Board Clerk certified resolution 

or minute order. This document must include certification that the hearing 

was held in accordance with the information in the public notice. It must also 

list the rules that were adopted or amended, the date of the public hearing, 

and a statement of compliance with California Health and Safety Code 

Sections 40725-40728 (Administrative Procedures Act). 

 PUBLIC COMMENTS AND RESPONSES: Submit copies of written public 

comments made during the notice period and at the public hearing. Also 

submit any written responses prepared by the District staff or presented to the 

District Board at the public hearing. A summary of the public comments and 

responses is adequate. If there were no comments made during the notice 

period or at the hearing, please indicate N/A to the left. 
 

5/1/2002 

CALIFORNIA AIR RESOURCES BOARD 

SIP COMPLETENESS CHECKLIST 

(Electronic Format)

TECHNICAL MATERIALS 

 Not 

Attached Attached N/A

 RULE EVALUATION FORM: See instructions for completing the Rule 

Evaluation Form and the accompanying sample form. 

 NON-EPA TEST METHODS: Attach all test methods that are referenced in 

your rule that do not appear in 40 CFR 51, 60, 61, 63, or have not been 

previously submitted to EPA. EPA methods used in other media such as 

SW846 for solid waste are not automatically approved for air pollution 

applications. Submittal of test methods that are not EPA-approved should 

include the information and follow the procedure described in Region 9’s 

“Test Method Review & Evaluation Process.” 

 MODELING SUPPORT: Provide if appropriate. In general, modeling support 

is not required for VOC and NOx rules to determine their impacts on ozone 

levels. Modeling is required where a rule is a relaxation that affects large 

sources (> 100 TPY) in an attainment area for SO2, directly emitted PM10, 

CO, or NOx (for NO2 purposes). In cases where EPA is concerned with the 

impact on air quality of rule revisions which relax limits or cause a shift in 

emission patterns in a nonattainment area, a reference back to the approved 

SIP will be sufficient provided the approved SIP accounts for the relaxation 

and provided the approved SIP used the current EPA modeling guidelines. If 

current EPA modeling guidelines were not used, then new modeling may be 

required. 

 ECONOMIC AND TECHNICAL JUSTIFICATION FOR DEVIATIONS FROM 

EPA POLICIES: The District staff report or other information included with 

the submittal should discuss all potential relaxations or deviations from RACT, 

RACM, BACT, BACM, enforceability, attainment, RFP, or other relevant EPA 

requirements. This includes, for example, demonstrating that exemptions or 

emission limits less stringent than the presumptive RACT (e.g., a CTG) meet 

EPA’s 5 percent policy, and demonstrating that all source categories 

exempted from a RACM/BACM rule are de minimus according to EPA’s 

RACM/BACM policy. 

 ADDITIONAL MATERIALS: Provide District staff reports and any other 

supporting information concerning development of the rule or rule changes. 

This information should explain the basis for all limits and thresholds 

contained in the rule. 
CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 1

(Electronic Format) 

I. GENERAL INFORMATION

District: Sacramento Metropolitan Air Quality Management District

Rule No(s): 456 Date adopted/Amended/Rescinded: Amended October 23, 2008

Rule Title(s): Aerospace Assembly and Component Coating Operation

Date Submitted to ARB: May 18, 2009

If an Amended Rule, Date Last Amended (or Adopted): Amended July 23, 1998

Is the Rule Intended to be Sent to the U.S. EPA as a SIP Revision? Yes No (If No, do not complete remainder of form)

District Contact: Kevin J. Williams Phone Number: (916) 874-4851 E-mail Address: kjwilliams@airquality.org

Narrative Summary of New Rule or Rule Changes: New Rule Amended Rule 

The amendments lowered the solvent VOC limits for cleaning of spray guns used in coating operations from 200 

g/l to 25 g/l. The amendments also added a sunset date for the option of using an enclosed gun cleaner in lieu of 

complying with the VOC limit for the cleaning of spray guns used in any coating operations except for the

application equipment used in the rocket motor lining process. Application equipment used in the rocket motor 

lining process are allowed to be cleaned in an enclosed gun cleaner or with a solvent that complies with the 25 g/l 

VOC limit. The amendments also revised the low usage exemption to allow the use of up to 200 gallons per year 

of rocket motor adhesive that does not meet the VOC limits specified in this rule, provided that the VOC content 

of the rocket motor adhesives does not exceed 890 g/l. This exemption also limits the usage of all materials, 

excluding rocket motor adhesives, that do not meet the VOC limits specified in this rule to a total 55 gallons per 

year and limit the usage of all materials, including rocket motor adhesives, that do not meet the VOC limits 

sepcified in this rule to a total of 200 gallons per year. 

Pollutant(s) Regulated by the Rule (Check): ROG (NOx) SO2 

 (CO) PM TAC (name): 

II. EFFECT ON EMISSIONS

Complete this section ONLY for rules that, when implemented, will result in quantifiable changes in emissions. Attach reference(s) for emission factor(s) 

and other information. Attach calculation sheet showing how the emission information provided below was determined. 

Net Effect on Emissions: Increase Decrease N/A 

Emission Reduction Commitment in SIP for this Source Category: The 1994 SIP included a commitment to reduce VOC 

emissions from surface preparation and cleanup solvents by 2.9 tpd from the Sacramento district. Surface 

preparation and cleanup solvents are included in multiple rules. Prior to amendment of this rule, the district had 

reduced emissions from this category by 2.5 tpd. This rule amendment reduces emissions from this category by 

0.01 tons per year (0.00002 tpd). Together with the 2008 amendments to eight other prohibitory rules with surface 

preparation and cleanup requirements, the total emission reduction from this category is now 3 tpd, which satisfies 

the SIP commitment.

Inventory Year Used to Calculate Changes in Emissions: 2010 Area Affected: Sacramento County

Future Year Control Profile Estimate (Provide information on as many years as possible): 

 
CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 2

(Electronic Format) 

Baseline Inventory in the SIP for the Control Measure: 5.6 tpd for the Sacramento district.

Emissions Reduction Commitment in the SIP for the Control Measure: 2.9 tpd for the Sacramento district.

Revised Baseline Inventory (if any): N/A

Revised Emission Reduction Estimate (if developed): N/A

Note that the district’s input to the Rule Evaluation Form will not be used as input to the ARB’s emission forecasting and 

planning. 

III. SOURCES/ATTAINMENT STATUS

District is: Attainment Nonattainment Split 

Approximate Total Number of Small (<100 TPY) Sources Affected by this Amendment: 1

Percent in Nonattainment Area: 100% 

Number of Large (> 100 TPY) Sources Controlled: 1 Percent in Nonattainment Area: 100% 

Name(s) and Location(s) (city and county) of Large (> 100 TPY) Sources Controlled by Rule (Attach additional sheets as 

necessary): Aerojet, Rancho Cordova, Sacramento County

IV. EMISSION REDUCTION TECHNOLOGY

Does the Rule Include Emission Limits that are Continuous? Yes No 

If Yes, Those Limits are in Section(s) 301-302 and 304 of the Rule. 

Other Methods in the Rule for Achieving Emission Reductions are: listed in Section 305 which allows the installation of 

emission control equipment as an alternative to complying with the emission limits in Sections 301, 302, and 304.

V. OTHER REQUIREMENTS

The Rule Contains: 

Emission Limits in Section(s): 301-302 and 304 Work Practice Standards in Section(s): 304

Recordkeeping Requirements in Section(s): 501 Reporting Requirements in Section(s): N/A
CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 3

(Electronic Format) 

5/1/2002 

3

VI. IMPACT ON AIR QUALITY PLAN

 No Impact Impacts RFP Impacts attainment 

Discussion: Reduces emissions and makes progress toward reasonable further progress and attainment.


SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-1 

RULE 456 AEROSPACE ASSEMBLY AND COMPONENT COATING OPERATIONS

Adopted 2-23-93

(Amended 9-5-96, 7-23-98, XX-XX-08) 

INDEX

100 GENERAL

101 PURPOSE 

102 APPLICABILITY 

103 SEVERABILITY 

110 EXEMPTION, LOW USAGE OF MATERIAL EXCEEDING VOC CONTENT LIMITS OR 

VOC COMPOSITE PARTIAL VAPOR PRESSURE LIMITS

111 EXEMPTION, AEROSOL CONTAINERS 

112 EXEMPTION, APPLICATION EQUIPMENT 

113 EXEMPTION, SURFACE PREPARATION AND CLEANING

114 EXEMPTION, ROCKET MOTOR LINING PROCESS APPLICATION EQUIPMENT

200 DEFINITIONS

201 ABLATIVE COATING 

202 ADHESIVE 

203 ADHESIVE BONDING AGENT (PRIMER) 

204 AEROSPACE COMPONENTAEROSOL CONTAINER

205 AEROSOL CONTAINER AEROSPACE COMPONENT

206 AIRCRAFT 

207 APPLICATION EQUIPMENT 

208 ATMOSPHERE 

209 CLEANING 

210 CLEANUP MATERIAL 

211 CLOSED CONTAINER 

212 COATING 

213 COATING LINE 

214 COATING REMOVER (STRIPPER) 

215 CONFORMAL COATING 

216 DIP COAT 

217 ELECTRODEPOSITION 

218 ELECTROSTATIC DISCHARGE COATING

219 ELECTROSTATIC SPRAY

21920 ENCLOSED GUN CLEANER 

2201 END USER 

2212 EXEMPT COMPOUND 

2223 EXTREME PERFORMANCE COATING 

2234 FIRE RESISTANT/RETARDANT COATING 

2245 FLOW COATFLIGHT TEST COATING

2256 FLIGHT TEST COATINGFLOW COAT

2267 FUEL TANK COATING 

2278 HAND APPLICATION EQUIPMENT 

2289 HAND LETTERING 

22930 HIGH TEMPERATURE COATING 

2301 HIGH-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT 

2312 LOW-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT 

2323 MASKANT

234 MATERIAL

2335 MISSILE 

2346 MOLD RELEASE 

2357 NON-COMPLIANT COATINGMATERIAL

2368 PART MARKING COATING 

2379 PRETREATMENT WASH PRIMER 

23840 PRIMER 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-2 July 23, 1998 XX-XX-08

23941 RADIATION EFFECT COATING 

2402 RAIN EROSION RESISTANT COATING 

2413 REPAIR 

2424 ROCKET

245 ROCKET MOTOR LINING PROCESS

2436 ROLL COATER 

2447 SEALANT 

2458 SEALANT ADHESION PROMOTER COATING 

2469 SELF-PRIMING TOPCOAT 

24750 SOLID FILM LUBRICANT 

24851 SPACE VEHICLE 

24952 STATIONARY SOURCE 

2503 SURFACE PREPARATION MATERIAL 

2514 TEMPORARY PROTECTIVE COATING 

2525 TEST COUPON 

2536 THERMAL EXPANSION RELEASE COATING 

2547 THERMOCONTROL COATING 

2558 TOOLING 

2569 TOPCOAT 

25760 TOUCH-UP 

25861 TYPE I CHEMICAL MILLING MASKANT 

25962 TYPE II CHEMICAL MILLING MASKANT 

2603 VOLATILE ORGANIC COMPOUND (VOC) 

2614 VOLATILE ORGANIC COMPOUND (VOC) AS APPLIED 

2625 WET SEAL PRIMERFASTENER INSTALLATION COATING

300 STANDARDS

301 VOC CONTENT OF COATINGS FOR AEROSPACE COMPONENTS 

302 VOC CONTENT FOR COATING REMOVERS (STRIPPERS) 

303 APPLICATION EQUIPMENT REQUIREMENTS 

304 SURFACE PREPARATION AND CLEANING, APPLICATION EQUIPMENT CLEANUP, 

AND STORAGE REQUIREMENTS 

305 EMISSION CONTROL SYSTEM REQUIREMENTS 

400 ADMINISTRATIVE REQUIREMENTS

401 LOW USAGE EXEMPTION SUBMITTAL 

402 PROHIBITION OF SPECIFICATION 

403 PRODUCT INFORMATION REQUIREMENTS FOR SELLERS 

404 CALCULATION FOR DETERMINING VOC CONTENT OF COATINGS, LESS WATER 

AND EXEMPT COMPOUNDS 

405 CALCULATION FOR DETERMINING VOC CONTENT OF COATING REMOVERS 

(STRIPPERS), SURFACE PREPARATION AND CLEANING MATERIALS AND 

APPLICATION EQUIPMENT CLEANUP MATERIAL 

406 CALCULATION FOR DETERMINING VOLATILE ORGANIC COMPOUND COMPOSITE 

PARTIAL VAPOR PRESSURE 

407 CALCULATION FOR PERCENT CONTROL EFFICIENCY AND VOC MASS EMISSION 

RATE 

408 CALCULATION FOR DETERMINING OVERALL SYSTEM EFFICIENCY 

409 OPERATION AND MAINTENANCE PLAN 

500 MONITORING AND RECORDS

501 RECORDKEEPING FOR END USERS 

502 TEST METHODS 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-3 

100 GENERAL

101 PURPOSE: To limit emissions of volatile organic compounds from the application and use 

of coatings, coating removers (strippers), surface preparation and cleaning material and 

application equipment cleanup material to aerospace components at each stage of the 

aerospace coating operations. 

102 APPLICABILITY: The provisions of this rule shall apply within the District to the coating of 

aerospace components including coating removal (stripping), surface preparation and 

cleaning, and application equipment cleanup by any person, as defined in this rule. The 

requirements of Rule 441, ORGANIC SOLVENTS, shall not apply to operations subject to 

this rule. 

103 SEVERABILITY: If any section, subsection, sentence, clause, phrase, or portion of this 

rule is, for any reason, held invalid, unconstitutional, or unenforceable by any court of 

competent jurisdiction, such portion shall be deemed as a separate, distinct, and 

independent provision, and such holding shall not affect the validity of the remaining 

portions thereof. 

110 EXEMPTION, LOW USAGE OF MATERIALS EXCEEDING VOC CONTENT LIMITS OR 

VOC COMPOSITE PARTIAL VAPOR PRESSURE LIMITS: Except as provided in 

Section 110.1, tThe requirements of Sections 301 or 302 shall not apply to the use of 

material exceeding the VOC content limits specified in Sections 301 and 302, or the VOC 

composite partial vapor pressure limits specified in Section 302, provided that the 

requirements in Sections 401 and 501 are satisfied and the combined total of all materials 

exceeding the VOC content limits or the VOC composite partial vapor pressure limits 

used at the stationary source does not exceed 200 gallons in a calendar year prior to 

January 1, 2009 and 55 gallons in a calendar year beginning on or after January 1, 2009.

 110.1 On or after January 1, 2009, the requirements of Sections 301 or 302 shall not 

apply to the use of materials exceeding the VOC content limits specified in 

Sections 301 and 302, or the VOC composite partial vapor pressure limits 

specified in Section 302, provided that the requirements in Sections 401, 501, 

and all of the following are satisfied:

 a. The total of rocket motor adhesive that exceeds the limit specified in 

Section 301 used at the stationary source does not exceed 200 gallons in 

a calendar year and the VOC content of the adhesive is less than 890 

grams/liter, less water and exempt compounds; and

 b. The total of all other materials that exceeds the limits specified in 

Sections 301 and 302 used at the stationary source does not exceed 55 

gallons in a calendar year; and

 c. The total combined rocket motor adhesives and all other materials that 

exceeds the limits specified in Sections 301 and 302 used at the 

stationary source does not exceed 200 gallons in a calendar year.

111 EXEMPTION, AEROSOL CONTAINERS: The requirements of this rule shall not apply to 

the following: 

111.1 Coatings or cleaning solvents in non-refillable aerosol containers having a 

capacity of one liter (1.1 quarts) or less. 

112 EXEMPTION, APPLICATION EQUIPMENT: The requirements of Section 303 shall not 

apply to the following: 

112.1 Coatings that are applied via a template, stencil, stamp, or hand lettering to add 

designs, letters, or numbers to an aerospace component. 

112.2 Touch-up and repair coating operations and the use of detail guns for coating 

application. 

112.3 The application of coatings that contain fillers that adversely affect atomization 

with HVLP spray guns and that the District has determined cannot be applied by 

any of the application methods specified in Section 303. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-4 July 23, 1998 XX-XX-08

112.4 Hand held spray containers with non-refillable propellant canisters having a 

capacity of 8 ounces or less where total facility usage does not exceed 10 gallons 

per year, pursuant to Section 501.3 

113 EXEMPTION, SURFACE PREPARATION AND CLEANING: The requirements of 

Section 304.57 shall not apply to the following provided the requirements of Section 501 

are satisfied: 

113.1 Space vehicles. 

113.2 Cleaning and surface activation prior to adhesive bonding. 

 114 EXEMPTION, ROCKET MOTOR LINING PROCESS APPLICATION EQUIPMENT: The 

requirements of Section 304.5 shall not apply to the cleaning of rocket motor lining 

process application equipment if the application equipment is cleaned in an enclosed gun 

cleaner.

200 DEFINITIONS

201 ABLATIVE COATING: A coating, applied to both new and rework aerospace 

components, which chars and becomes intumescent when exposed to open flame, such 

as would occur during the failure of an engine casing. The purpose of the coating is to act 

as an insulative barrier and protect adjacent metal parts from an open flame.

202 ADHESIVE: A coating applied either over an adhesive bonding agent, or directly to the 

substrate to permanently bond one surface to another. 

203 ADHESIVE BONDING AGENT (PRIMER): A coating applied in a thin film (.0001 to 

.0005 inches) to two or more aerospace components that are subsequently coated with 

an adhesive. The purpose of the agent is to provide a slight etching of the surface and 

ensure the strength of the adhesive bond. 

204 AEROSOL CONTAINER: A hand-held, nonrefillable container which expels pressurized 

product ingredients by means of a propellant-induced force. 

205 AEROSPACE COMPONENT: The fabricated part, assembly of parts, or completed unit 

of any aircraft or space vehicle including integral equipment such as models, mock-ups, 

prototypes, molds, jigs, tooling, hardware jackets and test coupons.

206 AIRCRAFT: Any vehicle designed to travel through the air without leaving the Earth's 

atmosphere, including airplanes, balloons, helicopters, rockets, and missiles. 

207 APPLICATION EQUIPMENT: A device used to apply coatings or used in preparing a 

coating material, including, but not limited to, stir sticks or funnels. 

208 ATMOSPHERE: For the purposes of this rule, the gaseous envelope surrounding the 

Earth, retained by the Earth's gravitational field and extending to a height of 20 miles 

above the surface of the Earth. 

209 CLEANING: A solvent cleaning operation or activity carried out to keep tools, machinery, 

or general work areas in clean and operational condition. Cleaning operations include 

removal of overspray but do not include application equipment cleanup. 

210 CLEANUP MATERIAL: A VOC-containing material used to clean application equipment 

used in aerospace coating operations. 

211 CLOSED CONTAINER: A container which has a cover where the cover meets with the 

main body of the container without any visible gaps between the cover and the main body 

of the container. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-5 

212 COATING: A material applied to a surface to identify, beautify, protect, or minimize 

detection of such surface. 

213 COATING LINE: Any operation or process for applying, baking, curing, or drying surface 

coatings, together with associated equipment, such as a coating applicator, flashoff area, 

and oven. 

214 COATING REMOVER (STRIPPER): A material applied to the surface of any aerospace 

component to completely remove maskants, permanent coatings or coating residues. A 

coating remover (stripper) is not a surface preparation material, application equipment 

cleanup material or a material used for cleaning operations. Material used for the removal 

of overspray is not considered a coating remover. 

215 CONFORMAL COATING: A coating applied to electronic circuit boards or the assembled 

components for the resistance of moisture, corrosion, bacteria, or fungi. 

216 DIP COAT: A coating method which is applied by dipping an object into a vat of coating 

material and allowing any excess coating material to drain off. 

217 ELECTRODEPOSITION: A method of applying coatings using a water-based 

electrochemical bath process. The component being coated is immersed in a bath of the 

coating. An electrical potential is applied between the component and an oppositely 

charged electrode hanging in the bath. The electric potential causes the ionized coating 

to be electrically attracted, migrated and deposited on the component being coated. 

218 ELECTROSTATIC DISCHARGE COATING: An electrically conductive coating which 

prevents the build-up of static charge on the surface of an aerospace component. 

Applications include, but are not limited to, composites, space vehicles (shuttle craft 

rework), missiles, or helicopter blades.

219 ELECTROSTATIC SPRAY: The spray application of coatings where an electrostatic 

potential is created between the part to be coated and the coating particles.

21920 ENCLOSED GUN CLEANER:

21920.1 A device that is used for the cleaning of spray guns, pots, cups and hoses, that 

has an enclosed solvent container, is not open to the ambient air when in use, 

and has a mechanism to force the cleanup material through the gun while the 

cleaner is in operation; or 

21920.2 A device that is used for the cleaning of spray guns, pots, cups and hoses, that 

has an enclosed solvent container, uses non-atomized solvent flow to flush the 

spray equipment and collects and returns the discharged solvent to an enclosed 

container. 

2201 END USER: Any person applying any coating, coating remover (stripper), surface 

preparation and cleaning material, or application equipment cleanup material subject to 

this rule. 

2212 EXEMPT COMPOUND: For the purposes of this rule, “exempt compound” has the same 

meaning as in Rule 101—GENERAL PROVISIONS AND DEFINITIONS. 

2223 EXTREME PERFORMANCE COATING: A coating that encounters acute or chronic 

exposure to salt water, corrosives, caustics, acids, oxidizing agents, wind- or oceandriven debris, or electromagnetic pulses. 

2234 FIRE RESISTANT/RETARDANT COATING: A coating applied to the interior passenger 

compartments of aircraft that meets the Federal Aviation Administration (FAA) fire 

protection requirements listed in the Code of Federal Regulations 14 CFR Ch.1 (1-1-89) 

Part 25.853. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-6 July 23, 1998 XX-XX-08

2245 FLIGHT TEST COATING: A coating applied to aircraft to protect against corrosion and 

provide required marking during flight test evaluation. 

2256 FLOW COAT: A coating method which is applied by flowing a stream of coating over an 

object and allowing any excess coating material to drain off. 

2267 FUEL TANK COATING: A coating applied to the interior of an aircraft fuel tank to protect 

it from internal corrosion and bacterial growth. 

2278 HAND APPLICATION EQUIPMENT: Manually held equipment such as brushes, rollers, 

trowels, spatulas, daubers, rags, sponges, and mechanically or pneumatically driven 

syringes that do not atomize the applied products. 

2289 HAND LETTERING: A method utilizing hand application equipment to add letters and/or 

numbers on a substrate. 

22930 HIGH TEMPERATURE COATING: A coating which must be able to withstand 

temperatures of more than 400 degrees F. 

2301 HIGH-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT: Equipment used to 

apply coatings by means of a gun which is designed to be operated and which is operated 

between 0.1 and 10 psig air pressure measured dynamically at the center of the air cap 

and at the air horns. 

2312 LOW-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT: Application equipment 

with air pressure between 0.1 and 10.0 psig and air volume less than 15.5 cfm per spray 

gun and which operates at a maximum fluid delivery pressure of 50 psig. 

2323 MASKANT: A coating applied directly to an aerospace component to protect surface 

areas during chemical processing operations such as aging, anodizing, bonding, chemical 

milling, etching, or plating.

234 MATERIAL: Any coating, coating remover, or solvent.

2335 MISSILE: A device consisting of an unmanned unit containing internal propulsion (ie.--

rocket) and guidance systems. 

2346 MOLD RELEASE: A coating applied to a mold surface to prevent the molded piece from 

sticking to the mold as it is removed. 

2357 NON-COMPLIANT COATINGMATERIAL: 

A coating material that exceeds the VOC content limits specified in Section 301 or 302 or

the VOC composite partial vapor pressure limit specified in Section 302, and is in excess 

of the allowable volume per Section 110, and does not use Rule 107, Alternative 

Compliance or Section 305 for a compliance option.

2368 PART MARKING COATING: A coating or ink used to make identifying markings on 

materials, components, and/or assemblies and can be either permanent or temporary. 

2379 PRETREATMENT WASH PRIMER: A coating which contains at least 1⁄2 percent acid by 

weight, as determined by Section 502.2, applied directly to aerospace components to 

provide surface etching, corrosion resistance or adhesion of subsequent coatings. 

23840 PRIMER: A coating applied directly to the basic metal or other substrate of an aerospace 

component, and subsequently covered with a topcoat, to provide corrosion prevention, 

protection from the environment, functional fluid resistance or adhesion of subsequent 

coatings. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-7 

23941 RADIATION EFFECT COATING: An electronically conductive coating designed to 

prevent radar detection or electromagnetic interference. 

2402 RAIN EROSION RESISTANT COATING: A coating applied primarily to radomes, 

canopies, and leading edges of aircraft to provide protection from erosion due to rain, 

dust, and other airborne particles. 

2413 REPAIR: Recoating portions of previously coated products due to mechanical damage to 

the coating following normal coating operations. 

2424 ROCKET: A propulsion system designed to propel an object by a thrust generated by the 

expulsion of matter, especially by the high speed ejection of the gaseous combustion 

products produced by internal ignition of solid or liquid fuels.

245 ROCKET MOTOR LINING PROCESS: The application of adhesive or any other material 

to anywhere inside of the solid rocket motor casing to promote adhesion, provide 

insulation from the propellant, or inhibit the propellant burn rate.

2436 ROLL COATER: A series of mechanical rollers that forms a thin coating film on the 

surface of the roller, which is applied to a substrate by moving the substrate underneath 

the roller. 

2447 SEALANT: A coating which prevents the intrusion of moisture, rain, salt water, dust, and 

aircraft fluids; and used for any of the following specified applications: 

2447.1 Fuel sealing in fuel tanks; 

2447.2 Pressure area sealing in cabin areas; 

2447.3 Weather sealing on exterior skin surfaces of aerospace components; 

2447.4 Firewall sealing in engine and ordnance areas; 

2447.5 Electrical sealing for bulkhead wiring, electrical connectors and components; 

2447.6 Acid-resistant sealing in battery compartments and relief tanks; 

2447.7 Window sealing for windows; 

2447.8 High temperature sealing in engine areas, anti-icing ducts, and/or some 

electronics; 

2447.9 Aerodynamic sealing on exterior skin surfaces of aerospace components. 

2458 SEALANT ADHESION PROMOTER COATING: A special primer or adhesion promoter 

which is applied to aerospace components prior to sealant application to facilitate a bond 

between the sealant and the component. 

2469 SELF-PRIMING TOPCOAT: A two-component urethane coating which is self-priming 

and acts as a primer/topcoat system, applied directly to an aerospace component for 

corrosion protection, environmental protection and functional fluid resistance. 

24750 SOLID FILM LUBRICANT: A dry lubricant coating used to reduce friction between faying 

metal surfaces. The coating consists of an organic binder system containing one or more 

of the following substances: molybdenum disulfide, graphite, polytetrafluoroethylene 

(Teflon PTFE), other types of Teflon, lauric acid, cetyl alcohol, or waxes. 

24851 SPACE VEHICLE: A device designed to travel beyond the Earth's atmosphere, including 

satellites, manned vehicles (i.e.,-space shuttles), and missiles. 

24952 STATIONARY SOURCE: Any building, structure, facility, or emissions unit which emits 

or may emit any affected pollutant directly or as a fugitive emission. 

24952.1 Building, structure, facility, or emissions unit includes all pollutant emitting 

activities which: 

a. Belong to the same industrial grouping, and 

b. Are located on one property, or two or more contiguous properties, and 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-8 July 23, 1998 XX-XX-08

c. Are under the same or common ownership, operation, or control, or 

which are owned or operated by entities which are under common 

control. 

24952.2 Pollutant emitting activities shall be considered as part of the same industrial 

grouping if: 

a. They belong to the same two-digit Standard Industrial Classification (SIC) 

code, or 

b. They are part of a common production process, which includes industrial 

processes, manufacturing processes and any connected processes 

involving a common material. 

2503 SURFACE PREPARATION MATERIAL: A VOC-containing material applied to the 

surface of any aerospace component to clean the substrate prior to any coating 

application. 

2514 TEMPORARY PROTECTIVE COATING: A coating applied to an aerospace component 

to protect it from mechanical or corrosion damage during manufacturing and shipping. 

2525 TEST COUPON: A sample used to test aerospace coatings. 

2536 THERMAL EXPANSION RELEASE COATING: A coating which enables limited 

movement at the interface between the liner/propellant system and insulator of a rocket to 

ensure structural integrity during thermal expansion and contraction. 

2547 THERMOCONTROL COATING: A coating applied to provide specific emissivity or 

reflectivity properties to space vehicles. 

2558 TOOLING: Instruments or devices used in the manufacturing or rework on parts or 

completed units of any aerospace component. 

2569 TOPCOAT: A coating or series of coatings applied over a primer to provide an 

appearance, identification, or protection. 

25760 TOUCH-UP: That portion of the coating operation which is incidental to the main coating 

process but necessary to cover minor imperfections. 

25861 TYPE I CHEMICAL MILLING MASKANT: A coating that is applied directly to aluminum 

components to protect surface areas when chemical milling the component with a Type I 

etchant. A Type I etchant contains varying amounts of dissolved sulfur and does not 

contain amines. 

25962 TYPE II CHEMICAL MILLING MASKANT: A coating that is applied directly to aluminum 

components to protect surface areas when chemical milling the component with a Type II 

etchant. A Type II etchant is a strong sodium hydroxide solution containing amines. 

2603 VOLATILE ORGANIC COMPOUND (VOC): For the purposes of this rule, “volatile 

organic compound” has the same meaning as in Rule 101—GENERAL PROVISIONS 

AND DEFINITIONS. 

2614 VOLATILE ORGANIC COMPOUND (VOC) AS APPLIED: For the purpose of this rule, 

VOC as applied means the VOC content including thinners, reducers, hardeners, 

retarders, catalysts and additives calculated pursuant to Sections 404 or 405 as 

applicable. 

2625 WET FASTENER INSTALLATION COATING: A primer or sealer applied by dipping, 

brushing, or daubing to fasteners that are installed before the coating is cured. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-9 

300 STANDARDS: The following standards shall apply to any person or stationary source subject to 

this rule: 

301 VOC CONTENT OF COATINGS FOR AEROSPACE COMPONENTS: Except as 

provided in Sections 110, 111, and 305, a person shall not apply to any aerospace 

component any coating that exceeds the following VOC content limits as applied. The 

VOC content per volume of coating shall be determined pursuant to Section 502.1. 

VOC CONTENT: Grams/Liter (Lbs/Gal) 

less water and exempt compounds 

COATING TYPE 

DECEMBER 31, 1998

Ablative 600 (5.0) 

Adhesive 600 (5.0) 

Adhesive Bonding Agent 780 (6.5) 

Conformal 600 (5.0) 

Electrostatic Discharge 612 (5.1) 

Extreme Performance 750 (6.3) 

Fire Resistant/Retardant 600 (5.0) 

Flight Test 420 (3.5) 

Fuel Tank 650 (5.4) 

High Temperature 420 (3.5) 

Maskants 

Type I - Chemical Milling 622 (5.2) 

Type II - Chemical Milling 160 (1.3) 

All Others 850 (7.1) 

Mold Release 762 (6.4) 

Part Marking 850 (7.1) 

Pretreatment Wash Primer 780 (6.5) 

Primer 350 (2.9) 

Radiation Effect 600 (5.0) 

Rain Erosion Resistant: 

Fluoroelastomer 800 (6.7) 

All Other 600 (5.0) 

Sealant 600 (5.0) 

Sealant Adhesion Promoter 750 (6.3) 

Self-priming Topcoat 420 (3.5) 

Solid Film Lubricant 880 (7.3) 

Space Vehicle: 

Electrostatic Discharge 880 (7.3) 

All Other 1000 (8.3) 

Temporary Protective 250 (2.1) 

Thermal Expansion Release 762 (6.4) 

Thermocontrol 600 (5.0) 

Topcoat: 

Acrylic Lacquer for F-111 780 (6.5) 

All Other 420 (3.5) 

Wet Fastener Installation 620 (5.2) 

302 VOC CONTENT FOR COATING REMOVERS (STRIPPERS): 

Effective December 31, 1998, aA person shall not use a coating remover (stripper) in 

aerospace coating operations which contains more than 300 grams of VOC per liter of 

material (2.5 pounds per gallon) or has a VOC composite partial vapor pressure of greater 

than 9.5 mmHg (0.18 psia) at 68 F (20 C). The VOC content shall be determined 

pursuant to Section 502.1. The VOC composite partial vapor pressure shall be 

determined pursuant to Section 502.6. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-10 July 23, 1998 XX-XX-08

303 APPLICATION EQUIPMENT REQUIREMENTS: A person or stationary source shall not 

apply any coating unless one of the following application methods is used: 

303.1 Hand application equipment, such as brush or roller. 

303.2 Dip coat. 

303.3 Flow coat. 

303.4 Roll coater. 

303.5 Electrodeposition. 

303.6 Electrostatic spray. 

303.7 High-volume low-pressure (HVLP) spray. 

303.8 Low-volume low-pressure (LVLP) spray. 

303.9 Any other equivalent method which has been approved in writing by the Air 

Pollution Control Officer and the U.S. Environmental Protection Agency. 

304 SURFACE PREPARATION AND CLEANING, APPLICATION EQUIPMENT CLEANUP, 

AND STORAGE REQUIREMENTS: Any person subject to this rule shall comply with all 

of the following requirements: 

304.1 Closed containers shall be used for the disposal of cloth, sponges, or paper used 

for surface preparation, cleanup and coating removal. 

304.2 VOC-containing materials shall be stored in closed containers when not in use. 

304.3 Prior to (one year after adoption date)Eexcept for electrostatic spray guns, a 

person shall not use VOC-containing materials for the cleaning of spray guns

used in coating operations unless the spray gun is cleaned in an enclosed gun 

cleaner, or the VOC content of the material used does not exceed 200 grams/liter 

(1.67 pounds per gallon). The VOC content shall be determined pursuant to 

Section 502.1.

304.4 Effective (one year after adoption date) and prior to (two years after adoption 

date), a person shall not use VOC-containing materials for the cleaning of 

application equipment used in coating operations unless the application 

equipment is cleaned in an enclosed gun cleaner, or the VOC content of the 

material used does not exceed 25 grams/liter (0.21 pounds per gallon). The VOC 

content shall be determined pursuant to Section 502.1.

304.5 Effective (two years after adoption date), a person shall not use VOC-containing 

materials for the cleaning of application equipment used in coating operations 

unless the VOC content of the material used does not exceed 25 grams/liter (0.21 

pounds per gallon). The VOC content shall be determined pursuant to Section 

502.1

304.46 Prior to (one year after adoption date), Sspray gun nozzles only, may be soaked 

in solvent-based materials for cleaning, provided the container (not to exceed five 

(5) gallons in size) is kept tightly covered at all times except when accessing the 

container. 

304.57 Effective December 31, 1998, aA person shall not perform cleaning or surface 

preparation unless the VOC content of the material used does not exceed 200 

grams per liter (1.67 pounds/gallon) or the material has a VOC composite partial 

vapor pressure of 45 mmHg or less at 68 F (20 C), as determined by Sections 

502.1 and 502.6.

305 EMISSION CONTROL SYSTEM REQUIREMENTS: As an alternative to Section 301, 

302 and 304 a person may use air pollution control equipment that has been permitted by 

the Air Pollution Control Officer, pursuant to Rule 201, General Permitting Requirements, 

that provides an overall system efficiency, as determined by Section 408, of not less than 

85%. 

400 ADMINISTRATIVE REQUIREMENTS

401 LOW USAGE EXEMPTION SUBMITTAL: Effective January 31, 1999, and annually 

thereafter, tThe total previous calendar year usage records, as specified in Section 501.3, 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-11 

for all non-compliant coatingsmaterials shall be submitted annually to the Air Pollution 

Control Officer by January 31. 

402 PROHIBITION OF SPECIFICATION: No person shall require for use or specify the 

application of a coating subject to this Rule if such use or application results in a violation 

of any of the provisions of this Rule. The prohibition of this Section shall apply to all 

written or oral contracts under the terms of which any coating is to be applied to any 

aerospace component at any physical location within the District. 

403 PRODUCT INFORMATION REQUIREMENTS FOR SELLERS: Any person who sells 

any coating, coating remover (stripper), surface preparation and cleaning material or 

application equipment cleanup material subject to this rule shall provide the following 

information on material data sheets made available to the purchaser at the time of sale: 

403.1 The material type by name/code/manufacturer 

403.2 For coating material, the maximum VOC content of the material, as applied, after 

any mixing or thinning as recommended by the manufacturer. VOC content shall 

be displayed as grams of VOC per liter of coating (or pounds of VOC per gallon), 

excluding water and exempt compounds, pursuant to Section 404. 

403.3 For coating removers (strippers), surface preparation and cleaning material, and 

application equipment cleanup material the maximum VOC content of the 

material, as applied, after any mixing or thinning as recommended by the 

manufacturer, and the VOC composite partial vapor pressure. VOC content shall 

be displayed as grams of VOC per liter of coating (or pounds of VOC per gallon), 

including water and exempt compounds, pursuant to Section 405. The VOC 

composite partial pressure shall be displayed in mmHg @ 20o

C.

403.4 For all material, recommendations regarding thinning, reducing, or mixing with 

any VOC containing material, as defined in Section 25962. 

403.5 For all material, VOC content may be calculated using product formulation data, 

or may be determined using the test method in Section 502.1. 

403.6 The VOC composite partial pressure may be calculated using product formulation 

data or may be determined using the test method in Section 502.6. 

404 CALCULATION FOR DETERMINING VOC CONTENT OF COATINGS, LESS WATER 

AND EXEMPT COMPOUNDS: The volume of coating material is defined as the volume 

of the original coating, plus any VOC-containing material added to the original coating. 

The weight of VOC per combined volume of VOC and coating solids shall be calculated 

by the following equation: 

( )

( ) m W ec

V W ec

V V V

W W W G − −

− − 1 =

Where: G1 = Weight of VOC per total volume of coating, less water and 

exempt compounds, in grams per liter 

Wv = Weight of all volatile compounds including any volatile 

materials added to the original coating supplied by the 

manufacturer, in grams 

Ww = Weight of water, in grams 

Wec = Weight of compounds listed as exempt in Section 2212 from 

the definition of VOC, in grams 

Vm = Volume of coating material, in liters 

Vw = Volume of water, in liters 

Vec = Volume of compounds listed as exempt in Section 2212 from 

the definition of VOC, in liters 

405 CALCULATION FOR DETERMINING VOC CONTENT OF COATING REMOVERS 

(STRIPPERS), SURFACE PREPARATION AND CLEANING MATERIAL AND 

APPLICATION EQUIPMENT CLEANUP MATERIAL: The volume of material is defined as 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-12 July 23, 1998 XX-XX-08

the volume of the original material, plus any VOC-containing material added to the original 

material. The weight of VOC per total volume of material shall be calculated by the following 

equation; 

( )

m

V W ec

V

W W W G − − 1 =

Where: G1 = Weight of VOC per total volume of material, in grams per liter 

Wv = Weight of all volatile compounds, in grams 

Ww = Weight of water, in grams 

Wec = Weight of exempt compounds as listed in Section 2212, in 

grams 

Vm = Volume of material, in liters 

406 CALCULATION FOR DETERMINING VOLATILE ORGANIC COMPOUND COMPOSITE 

PARTIAL VAPOR PRESSURE: VOC composite partial vapor pressure shall be calculated by 

the following equation: 

( )( )

∑ ∑

∑

= =

=

+ +

= n

e

n

i i

i

e

e

W

W

n

i

i i i

c

MW

W

MW

W

MW

W

W VP MW

PP

1 1

1

Where: PPc = VOC composite partial vapor pressure at 20o

C, in mm Hg. 

Wi

 = Weight of the "I"th VOC compound, in grams, as determined 

by the most current version of ASTM E 260-96 (2006). 

Ww = Weight of water, in grams as determined by the most current 

version of ASTM D 3792-05. 

We = Weight of the “e”th exempt compound, in grams, as 

determined by the most current version of ASTM E 260-96 

(2006). 

Mwi = Molecular weight of the “I”th VOC compound, in grams per 

g-mole, as given in chemical reference literature. 

Mww = Molecular weight of water, 18 grams per g-mole. 

Mwe = Molecular weight of the “e”th exempt compound, in grams 

per g-mole, as given in chemical reference literature. 

Vpi

 = Vapor pressure of the “I”th VOC compound at 20oC, in 

mm Hg, as determined by Section 502.7 of this rule.

407 CALCULATION FOR DETERMINING PERCENT CONTROL EFFICIENCY AND VOC MASS 

EMISSION RATE: The VOC mass emission rate shall be calculated both upstream and 

downstream of the emissions control device based on the respective VOC mass 

concentration and volumetric flowrate, pursuant to Section 502.4 and the following equation: 

M = (Q)(C)(60 min/hr) [Calculated upstream and downstream] 

 Where: M = VOC mass emission rate (upstream and downstream), in 

lbs/hr 

Q = the volumetric flowrate at the inlet (upstream) or exhaust 

stack outlet (downstream), in scfm. 

C = the VOC mass concentration at the inlet (upstream) or outlet 

(downstream), in lb/scf, as measured by EPA Method 18, 25, 

25A, EPA Method 2 or 2C (whichever is applicable). 

The percent control efficiency is calculated as follows:
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-13 

%CE = [(M U – M D)+ M D / M U] X 100 

Where: CE = control efficiency. 

MU = the upstream VOC mass emission rate, in lb/hr. 

MD = the downstream VOC mass emission rate, in lb/hr. 

408 CALCULATION FOR DETERMINING OVERALL SYSTEM EFFICIENCY: To verify 

compliance with Section 305, the overall system efficiency is calculated as follows: 

%SE = [%CLE X %CE] X /100

Where: SE = system efficiency. 

CLE = collection efficiency, as determined by Section 502.5 

CE = control efficiency, as determined by Sections 407 and 502.4 

409 OPERATION AND MAINTENANCE PLAN: Any person using an approved emission control 

device pursuant to Section 305 must submit an Operation and Maintenance Plan for the 

emission control equipment to the Air Pollution Control Officer for approval. The Plan shall 

specify operation and maintenance procedures which will demonstrate continuous operation 

and compliance of the emission control equipment during periods of emissions-producing 

operations. The Plan shall also specify which records must be kept to document these 

operation and maintenance procedures. These records shall comply with the requirements of 

Section 501. The Plan shall be implemented upon approval of the Air Pollution Control 

Officer. 

500 MONITORING AND RECORDS

501 RECORDKEEPING FOR END USERS: In addition to any existing permit conditions issued 

pursuant to Rule 201, any person subject to this rule, including operations claiming exemption 

under Sections 110, 112 and 113 shall comply with the following requirements: 

501.1 LIST OF MATERIALS: A list shall be maintained of currently used coatings, coating 

removers (strippers), surface preparation and cleaning materials, application 

equipment cleanup materials and other VOC containing materials including, but not 

limited to thinners, reducers, hardeners, retarders, catalysts, etc . The list shall 

contain all such materials that are currently used and stored on site and shall include 

the following information: 

a. The material type by name/code/manufacturer and the appropriate category 

as designated by the coating categories in Sections 301, 302 and 304 or 

“exempt” as specified by Sections 112 and 113, as applicable. 

b. The actual VOC content of the material, as applied, as determined pursuant 

to Section 502.1, and for coating removers (strippers), surface preparation 

and cleaning material and application equipment cleanup material, the VOC 

composite partial vapor pressure. VOC content as provided by the 

manufacturer pursuant to Section 403 is acceptable, if following 

manufacturer’s recommended mix ratio. The VOC composite partial pressure 

may be calculated using product formulation data or may be determined 

using the test method in Section 502.6.

c. The actual mixing ratio used for the material, as applied. 

d. Identification of each material type exceeding the VOC limits specified in 

Sections 301 and 302 or the VOC composite partial vapor pressure limits 

specified in Section 302.

501.2 PRODUCT INFORMATION: A data sheet applicable to each material type shall be 

maintained on site and made available to the Air Pollution Control Officer on request. 

The data sheet shall be provided by the supplier to the end user, pursuant to Section 

403, and shall include the following information: 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-14 July 23, 1998 XX-XX-08

a. The material type by name/code/manufacturer. 

b. For coating material: the maximum VOC content of the coating material, as 

applied, after any mixing or thinning as recommended by the manufacturer. 

VOC content shall be displayed as grams of VOC per liter of coating (or 

pounds of VOC per gallon), excluding water and exempt compounds, 

pursuant to Section 404. 

c. For coating removers (strippers), surface preparation and cleaning material 

and application equipment cleanup material the maximum VOC content of the 

material, as applied, after any mixing or thinning as recommended by the 

manufacturer, and the VOC composite partial vapor pressure. VOC content 

shall be displayed as grams of VOC per liter of coating (or pounds of VOC 

per gallon), including water and exempt compounds, pursuant to Section 405. 

 The VOC composite partial pressure shall be displayed in mmHg @ 20o

C.

d. For all material, recommendations regarding thinning, reducing, or mixing 

with any VOC containing material, as defined in Section 2602. 

e. For all material, VOC content may be calculated using product formulation 

data, or may be determined using the test method in Section 502.1. 

f. The VOC composite partial pressure may be calculated using product 

formulation data or may be determined using the test method in Section 

502.6. 

501.3 USAGE RECORDS: Any person within the District using materials regulated by this 

rule shall update and maintain the records as follows:

a. Monthly: 

1. Records of total applied volume for each coating, coating remover 

(stripper), surface preparation and cleaning material and application 

equipment cleanup material, specified by category as listed in 

Sections 301, 302 and 304. 

2. The method of application, specified by coating category as listed in 

Sections 301 and 302, or by exemption pursuant to Section 112, as 

applicable. 

3. Records of total applied volume for each material type exceeding the 

VOC limits specified in Sections 301 and 302 or the VOC composite 

partial vapor pressure limits specified in Section 302 by 

name/code/manufacturer and coating category. 

b. Daily: 

1. If, pursuant to Section 305, an emission control device is used as a 

means of complying with this rule, records of the material type by 

name/code/manufacturer and the total applied volume of each 

material. 

2. For non-compliant coatings, as defined in Section 2357, records 

regarding the use, including the lack of use, of each material type by 

name/code/ and the total applied volume of each material. 

501.4 CONTROL EQUIPMENT: Any person using an emission control system pursuant to 

Section 305 as a means of complying with this rule shall maintain such records as 

required by the Operation and Maintenance Plan in Section 409 on a daily basis. 

501.5 DURATION OF RECORDS: 

a. Prior to (two years after date of adoption), Ssuch records shall be maintained onsite for the most recent continuous three year period.

b. Effective (two years after date of adoption), such records shall be maintained onsite for a continuous five-year period and made available for review by the Air 

Pollution Control Officer upon request.

502 TEST METHODS

502.1 DETERMINATION OF VOC CONTENT: VOC content of coatings, coating removers 

(strippers), surface preparation and cleaning material and application equipment 

cleanup material shall be determined in accordance with EPA Method 24 and 

Sections 404, or 405 and 502.3 of this rule. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

July 23, 1998 XX-XX-08 456-15 

502.2 DETERMINATION OF ACID CONTENT: The weight percent acid in a pretreatment 

wash primer shall be determined in accordance with ASTM D 1639-831613-06. 

502.3 DETERMINATION OF COMPOUNDS EXEMPT FROM VOC DEFINITION:

Compounds exempted from the VOC definition, as listed in Section 2201 of this rule, 

shall be determined in accordance with ASTM D 4457-8502 (2008) or ARB Method 

432. If any of the perfluorocarbons are being claimed as exempt compounds, the 

person making the claim must state in advance which compounds are present, and 

the EPA-approved test method used to make the determination of these compounds. 

502.4 DETERMINATION OF CONTROL EFFICIENCY: Control efficiency of control 

equipment shall be determined in accordance with EPA Method 18, 25, 25A, EPA 

Method 2 or 2C (whichever is applicable) and Section 407. 

502.5 DETERMINATION OF COLLECTION EFFICIENCY: 

Collection efficiency shall be determined using: Collection efficiency shall be 

determined in accordance with the U.S. EPA technical guideline document, 

“Guidelines for Determining Capture Efficiency,” dated January 9, 1995. Individual 

capture efficiency test runs subject to U.S. EPA technical guidelines shall be

determined by:

a. Applicable U.S. EPA methods 204, 204A, 204B, 204C, 204D, 204E, and/or 

204F; or 

b. Any other method approved by the U.S. EPA, the California Air Resources 

Board, and the Air Pollution Control Officer. 

502.6 DETERMINATION OF VOC COMPOSITE PARTIAL VAPOR PRESSURE: VOC 

composite partial vapor pressure shall be determined in accordance with Sections 

406 and 502.7 of this rule. 

502.7 VAPOR PRESSURE: The vapor pressure shall be determined using the most current 

version of ASTM Method D2879-97 (2007) or may be obtained from the most current 

edition of standard engineering reference texts, including but not limited to: 

a. The Vapor Pressure of Pure Substances, Boublik, Fried, and Hala; Elsevier 

Scientific Publishing Company, New York. 

b. Perry's Chemical Engineer's Handbook, McGraw-Hill Book Company. 

c. CRC Handbook of Chemistry and Physics, Chemical Rubber Publishing 

Company. 

d. Lange's Handbook of Chemistry, John Dean, editor, McGraw-Hill Book 

Company.

502.8 MULTIPLE TEST METHODS: When more than one test method or set of test methods 

is 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 methods shall constitute a violation of this 

rule.
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-1 

RULE 456 AEROSPACE ASSEMBLY AND COMPONENT COATING OPERATIONS

Adopted 2-23-93

(Amended 9-5-96, 7-23-98, 10-23-08) 

INDEX

100 GENERAL

101 PURPOSE 

102 APPLICABILITY 

103 SEVERABILITY 

110 EXEMPTION, LOW USAGE OF MATERIAL EXCEEDING VOC CONTENT LIMITS OR 

VOC COMPOSITE PARTIAL VAPOR PRESSURE LIMITS 

111 EXEMPTION, AEROSOL CONTAINERS 

112 EXEMPTION, APPLICATION EQUIPMENT 

113 EXEMPTION, SURFACE PREPARATION AND CLEANING 

114 EXEMPTION, ROCKET MOTOR LINING PROCESS APPLICATION EQUIPMENT 

200 DEFINITIONS

201 ABLATIVE COATING 

202 ADHESIVE 

203 ADHESIVE BONDING AGENT (PRIMER) 

204 AEROSOL CONTAINER 

205 AEROSPACE COMPONENT 

206 AIRCRAFT 

207 APPLICATION EQUIPMENT 

208 ATMOSPHERE 

209 CLEANING 

210 CLEANUP MATERIAL 

211 CLOSED CONTAINER 

212 COATING 

213 COATING LINE 

214 COATING REMOVER (STRIPPER) 

215 CONFORMAL COATING 

216 DIP COAT 

217 ELECTRODEPOSITION 

218 ELECTROSTATIC DISCHARGE COATING 

219 ELECTROSTATIC SPRAY 

220 ENCLOSED GUN CLEANER 

221 END USER 

222 EXEMPT COMPOUND 

223 EXTREME PERFORMANCE COATING 

224 FIRE RESISTANT/RETARDANT COATING 

225 FLIGHT TEST COATING 

226 FLOW COAT 

227 FUEL TANK COATING 

228 HAND APPLICATION EQUIPMENT 

229 HAND LETTERING 

230 HIGH TEMPERATURE COATING 

231 HIGH-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT 

232 LOW-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT 

233 MASKANT 

234 MATERIAL 

235 MISSILE 

236 MOLD RELEASE 

237 NON-COMPLIANT MATERIAL 

238 PART MARKING COATING 

239 PRETREATMENT WASH PRIMER 

240 PRIMER 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-2 October 23, 2008 

241 RADIATION EFFECT COATING 

242 RAIN EROSION RESISTANT COATING 

243 REPAIR 

244 ROCKET 

245 ROCKET MOTOR LINING PROCESS 

246 ROLL COATER 

247 SEALANT 

248 SEALANT ADHESION PROMOTER COATING 

249 SELF-PRIMING TOPCOAT 

250 SOLID FILM LUBRICANT 

251 SPACE VEHICLE 

252 STATIONARY SOURCE 

253 SURFACE PREPARATION MATERIAL 

254 TEMPORARY PROTECTIVE COATING 

255 TEST COUPON 

256 THERMAL EXPANSION RELEASE COATING 

257 THERMOCONTROL COATING 

258 TOOLING 

259 TOPCOAT 

260 TOUCH-UP 

261 TYPE I CHEMICAL MILLING MASKANT 

262 TYPE II CHEMICAL MILLING MASKANT 

263 VOLATILE ORGANIC COMPOUND (VOC) 

264 VOLATILE ORGANIC COMPOUND (VOC) AS APPLIED 

265 WET FASTENER INSTALLATION COATING 

300 STANDARDS

301 VOC CONTENT OF COATINGS FOR AEROSPACE COMPONENTS 

302 VOC CONTENT FOR COATING REMOVERS (STRIPPERS) 

303 APPLICATION EQUIPMENT REQUIREMENTS 

304 SURFACE PREPARATION AND CLEANING, APPLICATION EQUIPMENT CLEANUP, 

AND STORAGE REQUIREMENTS 

305 EMISSION CONTROL SYSTEM REQUIREMENTS 

400 ADMINISTRATIVE REQUIREMENTS

401 LOW USAGE EXEMPTION SUBMITTAL 

402 PROHIBITION OF SPECIFICATION 

403 PRODUCT INFORMATION REQUIREMENTS FOR SELLERS 

404 CALCULATION FOR DETERMINING VOC CONTENT OF COATINGS, LESS WATER 

AND EXEMPT COMPOUNDS 

405 CALCULATION FOR DETERMINING VOC CONTENT OF COATING REMOVERS 

(STRIPPERS), SURFACE PREPARATION AND CLEANING MATERIALS AND 

APPLICATION EQUIPMENT CLEANUP MATERIALS 

406 CALCULATION FOR DETERMINING VOLATILE ORGANIC COMPOUND COMPOSITE 

PARTIAL VAPOR PRESSURE 

407 CALCULATION FOR PERCENT CONTROL EFFICIENCY AND VOC MASS EMISSION 

RATE 

408 CALCULATION FOR DETERMINING OVERALL SYSTEM EFFICIENCY 

409 OPERATION AND MAINTENANCE PLAN 

500 MONITORING AND RECORDS

501 RECORDKEEPING FOR END USERS 

502 TEST METHODS 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-3 

100 GENERAL

101 PURPOSE: To limit emissions of volatile organic compounds from the application and use of 

coatings, coating removers (strippers), surface preparation and cleaning material and 

application equipment cleanup material to aerospace components at each stage of the 

aerospace coating operations. 

102 APPLICABILITY: The provisions of this rule shall apply within the District to the coating of 

aerospace components including coating removal (stripping), surface preparation and 

cleaning, and application equipment cleanup by any person, as defined in this rule. The 

requirements of Rule 441, ORGANIC SOLVENTS, shall not apply to operations subject to 

this rule. 

103 SEVERABILITY: If any section, subsection, sentence, clause, phrase, or portion of this rule 

is, for any reason, held invalid, unconstitutional, or unenforceable by any court of competent 

jurisdiction, such portion shall be deemed as a separate, distinct, and independent provision, 

and such holding shall not affect the validity of the remaining portions thereof. 

110 EXEMPTION, LOW USAGE OF MATERIALS EXCEEDING VOC CONTENT LIMITS OR 

VOC COMPOSITE PARTIAL VAPOR PRESSURE LIMITS: Except as provided in Section 

110.1, the requirements of Sections 301 or 302 shall not apply to the use of material 

exceeding the VOC content limits specified in Sections 301 and 302, or the VOC composite 

partial vapor pressure limits specified in Section 302, provided that the requirements in 

Sections 401 and 501 are satisfied and the combined total of all materials exceeding the 

VOC content limits or the VOC composite partial vapor pressure limits used at the stationary 

source does not exceed 200 gallons in a calendar year prior to January 1, 2009 and 55 

gallons in a calendar year beginning on or after January 1, 2009. 

110.1 On or after January 1, 2009, the requirements of Sections 301 or 302 shall not apply 

to the use of materials exceeding the VOC content limits specified in Sections 301 

and 302, or the VOC composite partial vapor pressure limits specified in Section 302, 

provided that the requirements in Sections 401, 501, and all of the following are 

satisfied: 

 a. The total of rocket motor adhesive that exceeds the limit specified in Section 

301 used at the stationary source does not exceed 200 gallons in a calendar 

year and the VOC content of the adhesive is less than 890 grams/liter, less 

water and exempt compounds; and 

 b. The total of all other materials that exceed the limits specified in Sections 

301 and 302 used at the stationary source does not exceed 55 gallons in a 

calendar year; and 

 c. The total combined rocket motor adhesives and all other materials that 

exceed the limits specified in Sections 301 and 302 used at the stationary 

source do not exceed 200 gallons in a calendar year. 

111 EXEMPTION, AEROSOL CONTAINERS: The requirements of this rule shall not apply to the 

following: 

111.1 Coatings or cleaning solvents in non-refillable aerosol containers having a capacity 

of one liter (1.1 quarts) or less. 

112 EXEMPTION, APPLICATION EQUIPMENT: The requirements of Section 303 shall not apply 

to the following: 

112.1 Coatings that are applied via a template, stencil, stamp, or hand lettering to add 

designs, letters, or numbers to an aerospace component. 

112.2 Touch-up and repair coating operations and the use of detail guns for coating 

application. 

112.3 The application of coatings that contain fillers that adversely affect atomization with 

HVLP spray guns and that the District has determined cannot be applied by any of 

the application methods specified in Section 303. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-4 October 23, 2008 

112.4 Hand held spray containers with non-refillable propellant canisters having a capacity 

of 8 ounces or less where total facility usage does not exceed 10 gallons per year, 

pursuant to Section 501.3 

113 EXEMPTION, SURFACE PREPARATION AND CLEANING: The requirements of Section 

304.7 shall not apply to the following provided the requirements of Section 501 are satisfied: 

113.1 Space vehicles. 

113.2 Cleaning and surface activation prior to adhesive bonding. 

 114 EXEMPTION, ROCKET MOTOR LINING PROCESS APPLICATION EQUIPMENT: The 

requirements of Section 304.5 shall not apply to the cleaning of rocket motor lining process 

application equipment if the application equipment is cleaned in an enclosed gun cleaner. 

200 DEFINITIONS

201 ABLATIVE COATING: A coating, applied to both new and rework aerospace components, 

which chars and becomes intumescent when exposed to open flame, such as would occur 

during the failure of an engine casing. The purpose of the coating is to act as an insulative 

barrier and protect adjacent metal parts from an open flame. 

202 ADHESIVE: A coating applied either over an adhesive bonding agent, or directly to the 

substrate to permanently bond one surface to another. 

203 ADHESIVE BONDING AGENT (PRIMER): A coating applied in a thin film (.0001 to .0005 

inches) to two or more aerospace components that are subsequently coated with an 

adhesive. The purpose of the agent is to provide a slight etching of the surface and ensure 

the strength of the adhesive bond. 

204 AEROSOL CONTAINER: A hand-held, nonrefillable container which expels pressurized 

product ingredients by means of a propellant-induced force. 

205 AEROSPACE COMPONENT: The fabricated part, assembly of parts, or completed unit of 

any aircraft or space vehicle including integral equipment such as models, mock-ups, 

prototypes, molds, jigs, tooling, hardware jackets and test coupons. 

206 AIRCRAFT: Any vehicle designed to travel through the air without leaving the Earth's 

atmosphere, including airplanes, balloons, helicopters, rockets, and missiles. 

207 APPLICATION EQUIPMENT: A device used to apply coatings or used in preparing a 

coating material, including, but not limited to, stir sticks or funnels. 

208 ATMOSPHERE: For the purposes of this rule, the gaseous envelope surrounding the Earth, 

retained by the Earth's gravitational field and extending to a height of 20 miles above the 

surface of the Earth. 

209 CLEANING: A solvent cleaning operation or activity carried out to keep tools, machinery, or 

general work areas in clean and operational condition. Cleaning operations include removal 

of overspray but do not include application equipment cleanup. 

210 CLEANUP MATERIAL: A VOC-containing material used to clean application equipment 

used in aerospace coating operations. 

211 CLOSED CONTAINER: A container which has a cover where the cover meets with the main 

body of the container without any visible gaps between the cover and the main body of the 

container. 

212 COATING: A material applied to a surface to identify, beautify, protect, or minimize detection 

of such surface. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-5 

213 COATING LINE: Any operation or process for applying, baking, curing, or drying surface 

coatings, together with associated equipment, such as a coating applicator, flashoff area, and 

oven. 

214 COATING REMOVER (STRIPPER): A material applied to the surface of any aerospace 

component to completely remove maskants, permanent coatings or coating residues. A 

coating remover (stripper) is not a surface preparation material, application equipment 

cleanup material or a material used for cleaning operations. Material used for the removal of 

overspray is not considered a coating remover. 

215 CONFORMAL COATING: A coating applied to electronic circuit boards or the assembled 

components for the resistance of moisture, corrosion, bacteria, or fungi. 

216 DIP COAT: A coating method which is applied by dipping an object into a vat of coating 

material and allowing any excess coating material to drain off. 

217 ELECTRODEPOSITION: A method of applying coatings using a water-based 

electrochemical bath process. The component being coated is immersed in a bath of the 

coating. An electrical potential is applied between the component and an oppositely charged 

electrode hanging in the bath. The electric potential causes the ionized coating to be 

electrically attracted, migrated and deposited on the component being coated. 

218 ELECTROSTATIC DISCHARGE COATING: An electrically conductive coating which 

prevents the build-up of static charge on the surface of an aerospace component. 

Applications include, but are not limited to, composites, space vehicles (shuttle craft rework), 

missiles, or helicopter blades. 

219 ELECTROSTATIC SPRAY: The spray application of coatings where an electrostatic 

potential is created between the part to be coated and the coating particles. 

220 ENCLOSED GUN CLEANER:

220.1 A device that is used for the cleaning of spray guns, pots, cups and hoses, that has 

an enclosed solvent container, is not open to the ambient air when in use, and has a 

mechanism to force the cleanup material through the gun while the cleaner is in 

operation; or 

220.2 A device that is used for the cleaning of spray guns, pots, cups and hoses, that has 

an enclosed solvent container, uses non-atomized solvent flow to flush the spray 

equipment and collects and returns the discharged solvent to an enclosed container. 

221 END USER: Any person applying any coating, coating remover (stripper), surface 

preparation and cleaning material, or application equipment cleanup material subject to this 

rule. 

222 EXEMPT COMPOUND: For the purposes of this rule, “exempt compound” has the same 

meaning as in Rule 101—GENERAL PROVISIONS AND DEFINITIONS. 

223 EXTREME PERFORMANCE COATING: A coating that encounters acute or chronic 

exposure to salt water, corrosives, caustics, acids, oxidizing agents, wind- or ocean-driven 

debris, or electromagnetic pulses. 

224 FIRE RESISTANT/RETARDANT COATING: A coating applied to the interior passenger 

compartments of aircraft that meets the Federal Aviation Administration (FAA) fire protection 

requirements listed in the Code of Federal Regulations 14 CFR Ch.1 (1-1-89) Part 25.853. 

225 FLIGHT TEST COATING: A coating applied to aircraft to protect against corrosion and 

provide required marking during flight test evaluation. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-6 October 23, 2008 

226 FLOW COAT: A coating method which is applied by flowing a stream of coating over an 

object and allowing any excess coating material to drain off. 

227 FUEL TANK COATING: A coating applied to the interior of an aircraft fuel tank to protect it 

from internal corrosion and bacterial growth. 

228 HAND APPLICATION EQUIPMENT: Manually held equipment such as brushes, rollers, 

trowels, spatulas, daubers, rags, sponges, and mechanically or pneumatically driven syringes 

that do not atomize the applied products. 

229 HAND LETTERING: A method utilizing hand application equipment to add letters and/or 

numbers on a substrate. 

230 HIGH TEMPERATURE COATING: A coating which must be able to withstand temperatures 

of more than 400 degrees F. 

231 HIGH-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT: Equipment used to apply 

coatings by means of a gun which is designed to be operated and which is operated between 

0.1 and 10 psig air pressure measured dynamically at the center of the air cap and at the air 

horns. 

232 LOW-VOLUME LOW-PRESSURE APPLICATION EQUIPMENT: Application equipment with 

air pressure between 0.1 and 10.0 psig and air volume less than 15.5 cfm per spray gun and 

which operates at a maximum fluid delivery pressure of 50 psig. 

233 MASKANT: A coating applied directly to an aerospace component to protect surface areas 

during chemical processing operations such as aging, anodizing, bonding, chemical milling, 

etching, or plating. 

234 MATERIAL: Any coating, coating remover, or solvent. 

235 MISSILE: A device consisting of an unmanned unit containing internal propulsion (i.e. 

rocket) and guidance systems. 

236 MOLD RELEASE: A coating applied to a mold surface to prevent the molded piece from 

sticking to the mold as it is removed. 

237 NON-COMPLIANT MATERIAL: A material that exceeds the VOC content limits specified in 

Section 301 or 302 or the VOC composite partial vapor pressure limit specified in Section 

302, and is in excess of the allowable volume per Section 110, and does not use Rule 107, 

Alternative Compliance or Section 305 for a compliance option. 

238 PART MARKING COATING: A coating or ink used to make identifying markings on 

materials, components, and/or assemblies and can be either permanent or temporary. 

239 PRETREATMENT WASH PRIMER: A coating which contains at least 1⁄2 percent acid by 

weight, as determined by Section 502.2, applied directly to aerospace components to provide 

surface etching, corrosion resistance or adhesion of subsequent coatings. 

240 PRIMER: A coating applied directly to the basic metal or other substrate of an aerospace 

component, and subsequently covered with a topcoat, to provide corrosion prevention, 

protection from the environment, functional fluid resistance or adhesion of subsequent 

coatings. 

241 RADIATION EFFECT COATING: An electronically conductive coating designed to prevent 

radar detection or electromagnetic interference. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-7 

242 RAIN EROSION RESISTANT COATING: A coating applied primarily to radomes, canopies, 

and leading edges of aircraft to provide protection from erosion due to rain, dust, and other 

airborne particles. 

243 REPAIR: Recoating portions of previously coated products due to mechanical damage to the 

coating following normal coating operations. 

244 ROCKET: A propulsion system designed to propel an object by a thrust generated by the 

expulsion of matter, especially by the high speed ejection of the gaseous combustion 

products produced by internal ignition of solid or liquid fuels. 

245 ROCKET MOTOR LINING PROCESS: The application of adhesive or any other material to 

anywhere inside of the solid rocket motor casing to promote adhesion, provide insulation from 

the propellant, or inhibit the propellant burn rate. 

246 ROLL COATER: A series of mechanical rollers that forms a thin coating film on the surface 

of the roller, which is applied to a substrate by moving the substrate underneath the roller. 

247 SEALANT: A coating which prevents the intrusion of moisture, rain, salt water, dust, and 

aircraft fluids; and used for any of the following specified applications: 

247.1 Fuel sealing in fuel tanks; 

247.2 Pressure area sealing in cabin areas; 

247.3 Weather sealing on exterior skin surfaces of aerospace components; 

247.4 Firewall sealing in engine and ordnance areas; 

247.5 Electrical sealing for bulkhead wiring, electrical connectors and components; 

247.6 Acid-resistant sealing in battery compartments and relief tanks; 

247.7 Window sealing for windows; 

247.8 High temperature sealing in engine areas, anti-icing ducts, and/or some electronics; 

247.9 Aerodynamic sealing on exterior skin surfaces of aerospace components. 

248 SEALANT ADHESION PROMOTER COATING: A special primer or adhesion promoter 

which is applied to aerospace components prior to sealant application to facilitate a bond 

between the sealant and the component. 

249 SELF-PRIMING TOPCOAT: A two-component urethane coating which is self-priming and 

acts as a primer/topcoat system, applied directly to an aerospace component for corrosion 

protection, environmental protection and functional fluid resistance. 

250 SOLID FILM LUBRICANT: A dry lubricant coating used to reduce friction between faying 

metal surfaces. The coating consists of an organic binder system containing one or more of 

the following substances: molybdenum disulfide, graphite, polytetrafluoroethylene (Teflon 

PTFE), other types of Teflon, lauric acid, cetyl alcohol, or waxes. 

251 SPACE VEHICLE: A device designed to travel beyond the Earth's atmosphere, including 

satellites, manned vehicles (i.e. space shuttles), and missiles. 

252 STATIONARY SOURCE: Any building, structure, facility, or emissions unit which emits or 

may emit any affected pollutant directly or as a fugitive emission. 

252.1 Building, structure, facility, or emissions unit includes all pollutant emitting activities 

which: 

a. Belong to the same industrial grouping, and 

b. Are located on one property, or two or more contiguous properties, and 

c. Are under the same or common ownership, operation, or control, or which 

are owned or operated by entities which are under common control. 

252.2 Pollutant emitting activities shall be considered as part of the same industrial 

grouping if: 

a. They belong to the same two-digit Standard Industrial Classification (SIC) 

code, or 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-8 October 23, 2008 

b. They are part of a common production process, which includes industrial 

processes, manufacturing processes and any connected processes 

involving a common material. 

253 SURFACE PREPARATION MATERIAL: A VOC-containing material applied to the surface 

of any aerospace component to clean the substrate prior to any coating application. 

254 TEMPORARY PROTECTIVE COATING: A coating applied to an aerospace component to 

protect it from mechanical or corrosion damage during manufacturing and shipping. 

255 TEST COUPON: A sample used to test aerospace coatings. 

256 THERMAL EXPANSION RELEASE COATING: A coating which enables limited movement 

at the interface between the liner/propellant system and insulator of a rocket to ensure 

structural integrity during thermal expansion and contraction. 

257 THERMOCONTROL COATING: A coating applied to provide specific emissivity or 

reflectivity properties to space vehicles. 

258 TOOLING: Instruments or devices used in the manufacturing or rework on parts or completed 

units of any aerospace component. 

259 TOPCOAT: A coating or series of coatings applied over a primer to provide an appearance, 

identification, or protection. 

260 TOUCH-UP: That portion of the coating operation which is incidental to the main coating 

process but necessary to cover minor imperfections. 

261 TYPE I CHEMICAL MILLING MASKANT: A coating that is applied directly to aluminum 

components to protect surface areas when chemical milling the component with a Type I 

etchant. A Type I etchant contains varying amounts of dissolved sulfur and does not contain 

amines. 

262 TYPE II CHEMICAL MILLING MASKANT: A coating that is applied directly to aluminum 

components to protect surface areas when chemical milling the component with a Type II 

etchant. A Type II etchant is a strong sodium hydroxide solution containing amines. 

263 VOLATILE ORGANIC COMPOUND (VOC): For the purposes of this rule, “volatile organic 

compound” has the same meaning as in Rule 101—GENERAL PROVISIONS AND 

DEFINITIONS. 

264 VOLATILE ORGANIC COMPOUND (VOC) AS APPLIED: For the purpose of this rule, VOC 

as applied means the VOC content including thinners, reducers, hardeners, retarders, 

catalysts and additives calculated pursuant to Sections 404 or 405 as applicable. 

265 WET FASTENER INSTALLATION COATING: A primer or sealer applied by dipping, 

brushing, or daubing to fasteners that are installed before the coating is cured. 

300 STANDARDS: The following standards shall apply to any person or stationary source subject to this 

rule: 

301 VOC CONTENT OF COATINGS FOR AEROSPACE COMPONENTS: Except as provided 

in Sections 110, 111, and 305, a person shall not apply to any aerospace component any 

coating that exceeds the following VOC content limits as applied. The VOC content per 

volume of coating shall be determined pursuant to Section 502.1. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-9 

 VOC CONTENT: Grams/Liter (Lbs/Gal) 

COATING TYPE less water and exempt compounds 

 

Ablative 600 (5.0) 

Adhesive 600 (5.0) 

Adhesive Bonding Agent 780 (6.5) 

Conformal 600 (5.0) 

Electrostatic Discharge 612 (5.1) 

Extreme Performance 750 (6.3) 

Fire Resistant/Retardant 600 (5.0) 

Flight Test 420 (3.5) 

Fuel Tank 650 (5.4) 

High Temperature 420 (3.5) 

Maskants 

Type I - Chemical Milling 622 (5.2) 

Type II - Chemical Milling 160 (1.3) 

All Others 850 (7.1) 

Mold Release 762 (6.4) 

Part Marking 850 (7.1) 

Pretreatment Wash Primer 780 (6.5) 

Primer 350 (2.9) 

Radiation Effect 600 (5.0) 

Rain Erosion Resistant: 

Fluoroelastomer 800 (6.7) 

All Other 600 (5.0) 

Sealant 600 (5.0) 

Sealant Adhesion Promoter 750 (6.3) 

Self-priming Topcoat 420 (3.5) 

Solid Film Lubricant 880 (7.3) 

Space Vehicle: 

Electrostatic Discharge 880 (7.3) 

All Other 1000 (8.3) 

Temporary Protective 250 (2.1) 

Thermal Expansion Release 762 (6.4) 

Thermocontrol 600 (5.0) 

Topcoat: 

Acrylic Lacquer for F-111 780 (6.5) 

All Other 420 (3.5) 

Wet Fastener Installation 620 (5.2) 

302 VOC CONTENT FOR COATING REMOVERS (STRIPPERS): A person shall not use a 

coating remover (stripper) in aerospace coating operations which contains more than 300 

grams of VOC per liter of material (2.5 pounds per gallon) or has a VOC composite partial 

vapor pressure of greater than 9.5 mmHg (0.18 psia) at 68 °F (20 °C). The VOC content shall 

be determined pursuant to Section 502.1. The VOC composite partial vapor pressure shall 

be determined pursuant to Section 502.6. 

303 APPLICATION EQUIPMENT REQUIREMENTS: A person or stationary source shall not 

apply any coating unless one of the following application methods is used: 

303.1 Hand application equipment, such as brush or roller. 

303.2 Dip coat. 

303.3 Flow coat. 

303.4 Roll coater. 

303.5 Electrodeposition. 

303.6 Electrostatic spray. 

303.7 High-volume low-pressure (HVLP) spray. 

303.8 Low-volume low-pressure (LVLP) spray. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-10 October 23, 2008 

303.9 Any other equivalent method which has been approved in writing by the Air Pollution 

Control Officer and the U.S. Environmental Protection Agency. 

304 SURFACE PREPARATION AND CLEANING, APPLICATION EQUIPMENT CLEANUP, 

AND STORAGE REQUIREMENTS: Any person subject to this rule shall comply with all of 

the following requirements: 

304.1 Closed containers shall be used for the disposal of cloth, sponges, or paper used for 

surface preparation, cleanup and coating removal. 

304.2 VOC-containing materials shall be stored in closed containers when not in use. 

304.3 Prior to October 23, 2009 except for electrostatic spray guns, a person shall not use 

VOC-containing materials for the cleaning of spray guns used in coating operations 

unless the spray gun is cleaned in an enclosed gun cleaner, or the VOC content of 

the material used does not exceed 200 grams/liter (1.67 pounds per gallon). The 

VOC content shall be determined pursuant to Section 502.1. 

304.4 Effective October 23, 2009 and prior to October 23, 2010, a person shall not use 

VOC-containing materials for the cleaning of application equipment used in coating 

operations unless the application equipment is cleaned in an enclosed gun cleaner, 

or the VOC content of the material used does not exceed 25 grams/liter (0.21 

pounds per gallon). The VOC content shall be determined pursuant to Section 502.1. 

304.5 Effective October 23, 2010, a person shall not use VOC-containing materials for the 

cleaning of application equipment used in coating operations unless the VOC content 

of the material used does not exceed 25 grams/liter (0.21 pounds per gallon). The 

VOC content shall be determined pursuant to Section 502.1 

304.6 Prior to October 23, 2009, spray gun nozzles only, may be soaked in solvent-based 

materials for cleaning, provided the container (not to exceed five (5) gallons in size) 

is kept tightly covered at all times except when accessing the container. 

304.7 A person shall not perform cleaning or surface preparation unless the VOC content 

of the material used does not exceed 200 grams per liter (1.67 pounds/gallon) or the 

material has a VOC composite partial vapor pressure of 45 mmHg or less at 68 °F 

(20 °C), as determined by Sections 502.1 and 502.6. 

305 EMISSION CONTROL SYSTEM REQUIREMENTS: As an alternative to Section 301, 302 

and 304 a person may use air pollution control equipment that has been permitted by the Air 

Pollution Control Officer, pursuant to Rule 201, General Permitting Requirements, that 

provides an overall system efficiency, as determined by Section 408, of not less than 85%. 

400 ADMINISTRATIVE REQUIREMENTS

401 LOW USAGE EXEMPTION SUBMITTAL: The total previous calendar year usage records, 

as specified in Section 501.3, for all non-compliant materials shall be submitted annually to 

the Air Pollution Control Officer by January 31. 

402 PROHIBITION OF SPECIFICATION: No person shall require for use or specify the 

application of a coating subject to this Rule if such use or application results in a violation of 

any of the provisions of this Rule. The prohibition of this Section shall apply to all written or 

oral contracts under the terms of which any coating is to be applied to any aerospace 

component at any physical location within the District. 

403 PRODUCT INFORMATION REQUIREMENTS FOR SELLERS: Any person who sells any 

coating, coating remover (stripper), surface preparation and cleaning material or application 

equipment cleanup material subject to this rule shall provide the following information on 

material data sheets made available to the purchaser at the time of sale: 

403.1 The material type by name/code/manufacturer 

403.2 For coating material, the maximum VOC content of the material, as applied, after any 

mixing or thinning as recommended by the manufacturer. VOC content shall be 

displayed as grams of VOC per liter of coating (or pounds of VOC per gallon), 

excluding water and exempt compounds, pursuant to Section 404. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-11 

403.3 For coating removers (strippers), surface preparation and cleaning material, and 

application equipment cleanup material the maximum VOC content of the material, 

as applied, after any mixing or thinning as recommended by the manufacturer, and 

the VOC composite partial vapor pressure. VOC content shall be displayed as 

grams of VOC per liter of coating (or pounds of VOC per gallon), including water and 

exempt compounds, pursuant to Section 405. The VOC composite partial pressure 

shall be displayed in mmHg @ 20 o

C. 

403.4 For all material, recommendations regarding thinning, reducing, or mixing with any 

VOC containing material, as defined in Section 263. 

403.5 For all material, VOC content may be calculated using product formulation data, or 

may be determined using the test method in Section 502.1. 

403.6 The VOC composite partial pressure may be calculated using product formulation 

data or may be determined using the test method in Section 502.6. 

404 CALCULATION FOR DETERMINING VOC CONTENT OF COATINGS, LESS WATER AND 

EXEMPT COMPOUNDS: The volume of coating material is defined as the volume of the 

original coating, plus any VOC-containing material added to the original coating. The weight 

of VOC per combined volume of VOC and coating solids shall be calculated by the following 

equation: 

( )

( ) m W ec

V W ec

V V V

W W W G − −

− − 1 =

Where: G1 = Weight of VOC per total volume of coating, less water and 

exempt compounds, in grams per liter 

Wv = Weight of all volatile compounds including any volatile 

materials added to the original coating supplied by the 

manufacturer, in grams 

Ww = Weight of water, in grams 

Wec = Weight of compounds listed as exempt in Section 222 from 

the definition of VOC, in grams 

Vm = Volume of coating material, in liters 

Vw = Volume of water, in liters 

Vec = Volume of compounds listed as exempt in Section 222 from 

the definition of VOC, in liters 

405 CALCULATION FOR DETERMINING VOC CONTENT OF COATING REMOVERS 

(STRIPPERS), SURFACE PREPARATION AND CLEANING MATERIALS AND 

APPLICATION EQUIPMENT CLEANUP MATERIALS: The volume of material is defined as 

the volume of the original material, plus any VOC-containing material added to the original 

material. The weight of VOC per total volume of material shall be calculated by the following 

equation; 

( )

m

V W ec

V

W W W G − − 1 =

Where: G1 = Weight of VOC per total volume of material, in grams per 

liter 

Wv = Weight of all volatile compounds, in grams 

Ww = Weight of water, in grams 

Wec = Weight of exempt compounds as listed in Section 222, in 

grams 

Vm = Volume of material, in liters 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-12 October 23, 2008 

406 CALCULATION FOR DETERMINING VOLATILE ORGANIC COMPOUND COMPOSITE 

PARTIAL VAPOR PRESSURE: VOC composite partial vapor pressure shall be calculated by 

the following equation: 

( )( )

∑ ∑

∑

= =

=

+ +

= n

e

n

i i

i

e

e

W

W

n

i

i i i

c

MW

W

MW

W

MW

W

W VP MW

PP

1 1

1

Where: PPc = VOC composite partial vapor pressure at 20o

C, in mm Hg. 

Wi = Weight of the "I"th VOC compound, in grams, as 

determined by ASTM E 260-96 (2006). 

Ww = Weight of water, in grams as determined by ASTM D 3792-

05. 

We = Weight of the “e”th exempt compound, in grams, as 

determined by ASTM E 260-96 (2006). 

MWi

 = Molecular weight of the “I”th VOC compound, in grams per 

g-mole, as given in chemical reference literature. 

MWw = Molecular weight of water, 18 grams per g-mole. 

MWe = Molecular weight of the “e”th exempt compound, in grams 

per g-mole, as given in chemical reference literature. 

VPi

 = Vapor pressure of the “I”th VOC compound at 20oC, in 

mm Hg, as determined by Section 502.7 of this rule.

407 CALCULATION FOR DETERMINING PERCENT CONTROL EFFICIENCY AND VOC 

MASS EMISSION RATE: The VOC mass emission rate shall be calculated both upstream 

and downstream of the emissions control device based on the respective VOC mass 

concentration and volumetric flowrate, pursuant to Section 502.4 and the following equation: 

M = (Q)(C)(60 min/hr) [Calculated upstream and downstream] 

Where: M = VOC mass emission rate (upstream and downstream), in 

lbs/hr 

Q = the volumetric flowrate at the inlet (upstream) or exhaust 

stack outlet (downstream), in scfm. 

C = the VOC mass concentration at the inlet (upstream) or 

outlet (downstream), in lb/scf, as measured by EPA Method 

18, 25, 25A, EPA Method 2 or 2C (whichever is 

applicable). 

The percent control efficiency is calculated as follows: 

%CE = [(M U – M D) / M U] x 100 

Where: CE = control efficiency. 

MU = the upstream VOC mass emission rate, in lb/hr. 

MD = the downstream VOC mass emission rate, in lb/hr. 

408 CALCULATION FOR DETERMINING OVERALL SYSTEM EFFICIENCY: To verify 

compliance with Section 305, the overall system efficiency is calculated as follows: 

%SE = [%CLE x %CE] /100 

Where: SE = system efficiency. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-13 

CLE = collection efficiency, as determined by Section 502.5 

CE = control efficiency, as determined by Sections 407 and 

502.4 

409 OPERATION AND MAINTENANCE PLAN: Any person using an approved emission control 

device pursuant to Section 305 must submit an Operation and Maintenance Plan for the 

emission control equipment to the Air Pollution Control Officer for approval. The Plan shall 

specify operation and maintenance procedures which will demonstrate continuous operation 

and compliance of the emission control equipment during periods of emissions-producing 

operations. The Plan shall also specify which records must be kept to document these 

operation and maintenance procedures. These records shall comply with the requirements of 

Section 501. The Plan shall be implemented upon approval of the Air Pollution Control 

Officer. 

500 MONITORING AND RECORDS

501 RECORDKEEPING FOR END USERS: In addition to any existing permit conditions issued 

pursuant to Rule 201, any person subject to this rule, including operations claiming exemption 

under Sections 110, 112 and 113 shall comply with the following requirements: 

501.1 LIST OF MATERIALS: A list shall be maintained of currently used coatings, coating 

removers (strippers), surface preparation and cleaning materials, application 

equipment cleanup materials and other VOC containing materials including, but not 

limited to thinners, reducers, hardeners, retarders, catalysts, etc . The list shall 

contain all such materials that are currently used and stored on site and shall include 

the following information: 

a. The material type by name/code/manufacturer and the appropriate category 

as designated by the coating categories in Sections 301, 302 and 304 or 

“exempt” as specified by Sections 112 and 113, as applicable. 

b. The actual VOC content of the material, as applied, as determined pursuant 

to Section 502.1, and for coating removers (strippers), surface preparation 

and cleaning material and application equipment cleanup material, the VOC 

composite partial vapor pressure. VOC content as provided by the 

manufacturer pursuant to Section 403 is acceptable, if following 

manufacturer’s recommended mix ratio. The VOC composite partial 

pressure may be calculated using product formulation data or may be 

determined using the test method in Section 502.6. 

c. The actual mixing ratio used for the material, as applied. 

d. Identification of each material type exceeding the VOC limits specified in 

Sections 301 and 302 or the VOC composite partial vapor pressure limits 

specified in Section 302. 

501.2 PRODUCT INFORMATION: A data sheet applicable to each material type shall be 

maintained on site and made available to the Air Pollution Control Officer on request. 

 The data sheet shall be provided by the supplier to the end user, pursuant to 

Section 403, and shall include the following information: 

a. The material type by name/code/manufacturer. 

b. For coating material: the maximum VOC content of the coating material, as 

applied, after any mixing or thinning as recommended by the manufacturer. 

VOC content shall be displayed as grams of VOC per liter of coating (or 

pounds of VOC per gallon), excluding water and exempt compounds, 

pursuant to Section 404. 

c. For coating removers (strippers), surface preparation and cleaning material 

and application equipment cleanup material the maximum VOC content of 

the material, as applied, after any mixing or thinning as recommended by 

the manufacturer, and the VOC composite partial vapor pressure. VOC 

content shall be displayed as grams of VOC per liter of coating (or pounds of 

VOC per gallon), including water and exempt compounds, pursuant to 

Section 405. The VOC composite partial pressure shall be displayed in 

mmHg @ 20o

C. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-14 October 23, 2008 

d. For all material, recommendations regarding thinning, reducing, or mixing 

with any VOC containing material, as defined in Section 263. 

e. For all material, VOC content may be calculated using product formulation 

data, or may be determined using the test method in Section 502.1. 

f. The VOC composite partial pressure may be calculated using product 

formulation data or may be determined using the test method in Section 

502.6. 

501.3 USAGE RECORDS: Any person within the District using materials regulated by this 

rule shall update and maintain the records as follows:

a. Monthly: 

1. Records of total applied volume for each coating, coating remover 

(stripper), surface preparation and cleaning material and application 

equipment cleanup material, specified by category as listed in 

Sections 301, 302 and 304. 

2. The method of application, specified by coating category as listed in 

Sections 301 and 302, or by exemption pursuant to Section 112, as 

applicable. 

3. Records of total applied volume for each material type exceeding 

the VOC limits specified in Sections 301 and 302 or the VOC 

composite partial vapor pressure limits specified in Section 302 by 

name/code/manufacturer and coating category. 

b. Daily: 

1. If, pursuant to Section 305, an emission control device is used as a 

means of complying with this rule, records of the material type by 

name/code/manufacturer and the total applied volume of each 

material. 

2. For non-compliant coatings, as defined in Section 237, records 

regarding the use, including the lack of use, of each material type 

by name/code/ and the total applied volume of each material. 

501.4 CONTROL EQUIPMENT: Any person using an emission control system pursuant to 

Section 305 as a means of complying with this rule shall maintain such records as 

required by the Operation and Maintenance Plan in Section 409 on a daily basis. 

501.5 DURATION OF RECORDS: 

a. Prior to October 23, 2010, such records shall be maintained on-site for the 

most recent continuous three year period. 

b. Effective October 23, 2010, such records shall be maintained on-site for a 

continuous five-year period and made available for review by the Air 

Pollution Control Officer upon request. 

502 TEST METHODS

502.1 DETERMINATION OF VOC CONTENT: VOC content of coatings, coating removers 

(strippers), surface preparation and cleaning material and application equipment 

cleanup material shall be determined in accordance with EPA Method 24 and 

Sections 404, or 405 and 502.3 of this rule. 

502.2 DETERMINATION OF ACID CONTENT: The weight percent acid in a pretreatment 

wash primer shall be determined in accordance with ASTM D 1613-06. 

502.3 DETERMINATION OF COMPOUNDS EXEMPT FROM VOC DEFINITION:

Compounds exempted from the VOC definition, as listed in Section 221 of this rule, 

shall be determined in accordance with ASTM D 4457-02 (2008) or ARB Method 

432. If any of the perfluorocarbons are being claimed as exempt compounds, the 

person making the claim must state in advance which compounds are present, and 

the EPA-approved test method used to make the determination of these compounds. 

502.4 DETERMINATION OF CONTROL EFFICIENCY: Control efficiency of control 

equipment shall be determined in accordance with EPA Method 18, 25, 25A, EPA 

Method 2 or 2C (whichever is applicable) and Section 407. 

502.5 DETERMINATION OF COLLECTION EFFICIENCY: Collection efficiency shall be 

determined in accordance with the U.S. EPA technical guideline document, 

“Guidelines for Determining Capture Efficiency,” dated January 9, 1995. Individual 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

 October 23, 2008 456-15 

capture efficiency test runs subject to U.S. EPA technical guidelines shall be 

determined by: 

a. Applicable U.S. EPA methods 204, 204A, 204B, 204C, 204D, 204E, and/or 

204F; or 

b. Any other method approved by the U.S. EPA, the California Air Resources 

Board, and the Air Pollution Control Officer. 

502.6 DETERMINATION OF VOC COMPOSITE PARTIAL VAPOR PRESSURE: VOC 

composite partial vapor pressure shall be determined in accordance with Sections 

406 and 502.7 of this rule. 

502.7 VAPOR PRESSURE: The vapor pressure shall be determined using ASTM Method 

D2879-97 (2007) or may be obtained from the most current edition of standard 

engineering reference texts, including but not limited to: 

a. The Vapor Pressure of Pure Substances, Boublik, Fried, and Hala; Elsevier 

Scientific Publishing Company, New York. 

b. Perry's Chemical Engineer's Handbook, McGraw-Hill Book Company. 

c. CRC Handbook of Chemistry and Physics, Chemical Rubber Publishing 

Company. 

d. Lange's Handbook of Chemistry, John Dean, editor, McGraw-Hill Book 

Company. 

502.8 MULTIPLE TEST METHODS: When more than one test method or set of test 

methods is 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 methods shall 

constitute a violation of this rule. 
SACRAMENTO METROPOLITAN AQMD RULES AND REGULATIONS 

456-16 October 23, 2008 

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 Larry Greene AIR POLLUTION CONTROL OFFICER

777 12th Street, 3rd Floor * Sacramento, CA 95814-1908 

916/874-4800 * 916/874-4899 fax 

www.airquality.org 

May 18, 2009 

Mr. Michael Guzzetta 

Stationary Source Division 

California Air Resources Board 

PO Box 2815 

Sacramento, CA 95812 

Subject: State Implementation Plan Revision, SMAQMD Rule 456 

Dear Mr. Guzzetta: 

Enclosed is the information necessary for submittal of Rule 456, Aerospace Assembly and 

Component Coating Operations, for revision to the State Implementation Plan. Rule 456 was 

amended by the District’s Board of Directors on July 23, 1998, and recently amended again on 

October 23, 2008. Please also forward the information for this submittal to U.S. EPA. 

If you have any comments or questions, please contact me at (916) 874-4851. 

Sincerely, 

Kevin J. Williams, Ph.D. 

Program Coordinator 

(sent via e-mail) 

Attachments: 

1. SIP Checklist Rule 456 

2. 1998 Amendments, Underline/Strikeout Version 

3. 2008 Final Version of Rule 456 

4. 2008 Underline/Strikeout Version of Rule 456 

5. Public Notice Evidence 

6. Resolution 

7. Public Comments 

8. Rule Evaluation Form 

9. Board Memo, September 2008 Hearing 

10. Board Memo, October 2008 Hearing 

11. Staff Report (includes responses to comments)