R307. £nvironmental Quality. Air Quality. 

RJ07-3SS. Control of Emissions from Aerospace 

Manufacture and Rework Facilities. 

RJ07-3SS-I. Purpose. 

111c p011)()sc of R.307-355 is 10 limit lhc emissions of 

volatile organic eomJl\>ullds (\10Cs) from acrospnce coatings 

and adhesives. from organic solvent cleaning. and from lhc 

storage and disposal of solvents Md waste w lvent matcriul~ 

assoeistrd with the u~ of aerospace coatings and adhesives. 

R307-3S5-2. Applicability. 

RJ07-355 applies to all aCro$pacc manufacture and 

rework lilc1litie:> that have the potential to emit I 0 tons or more 

per year of VOCs and that are located in Box Elder. Cache. 

Davis, Salt Lake. l.:t11h. I ooele and Weber counties. 

R307.JSS-3. Exemptions. 

(I} R307-355 does not apply: 

(a) Where cleaning 1tnd coliling Wkc:; place in 

research Md development, quality control, laboratory testing 

ttnd electronic parts and assemblies. except for cleaning iu1d 

coating of completed assemblies; 

(bl To manufacturing Oi rc\\Clrk operations 

involving space vehicles: nnd 

(c) To rework opernrions perfonncd on antique 

aerospace vehicles or cmnponents. 

R307-:3S5-4. Definitions. 

The following additional delinitions apply to R.3U7· 

355: 

•Aerospace manufucture" and "rework facilil) • 

means nny installation that produces. reworks. or repairs in any 

amount any commercial, civil, or military aerospace vehicle or 

component. 

''Antique :icro~pace vehicle or component" means an 

aircraft or component thereof that was built at least 30 years 

ago and would not routinely be in commercial or militllry 

service in the capacity for which it was designed 

"Chemical milling masknnt~" means a coating that is 

applied directly to aluminum components to protect surface 

areas when chc:mi,al milling the component with a Type I or 

Type II etchanL T}·pc 1 chemical milling maskanls are used 

with a 'f ypc I etchant ood Type II chemical milling maskants 

arc used with a Type 11 ctchnnt.. 

"Exempt solvents• means organic chemicals that arc 

not defined as voe. "General aviation re~'ork facility" means any 

11erospacc rn.stallulion \\1th the majoril) of its revenues resulting 

from the recon~iruction, repair, maintenance. repninting. 

conversion. or alt.:rntion of genernl uvimion aero~'J'nce vehicles 

or componenl5 

"Low vapor pressure hydrocarbon-ba...._'<l cleaning 

solvent" means a denning solvent that is composed of a 

mix!Un.: of' photodicmically reactive hydrocarbons and 

oxygenated hydrocarbons and hm; a maximum vapor pressure 

of 7 mm I lg at 68 degrees Fahrenheit These cleaners must 1101 

contain hazardous air pollutdnlS. 

"Space ~chick" means a mnn-mflclc rlcvice. either 

manned or unmmrncd. designed for operation beyond eurtli's 

otmospherc. ·1 his definition includt.-s integral equipment such 

a~ models. mock-ups. protot}pcs. mold. jigs, tooling.. hordwarc 

jad .. cts and test couPQns. Also mcluded. auxiliary equipment 

s.~o cinted with te~ , transport and storage that through 

contamination can compromise the space vehicle perfonnance. 

"Specialty coating" means a coating that. even 

though it meeL<> the definition of a primer. topcoat. or sclfprirning topcoat, has additional performance criteria beyond 

those of primers, topcoats, and self-priming topcoats for 

sp;:cific applications. 

{I) I he.><: perfonnance cntcri.i may include. but are 

not limited to. temperature or lire re.~istance, substrate 

compatibility. amiretlection, l.:mporary protection or marking, 

sc:.i.ling, ndhesi~cly joining o;ubstrates, or enhanced corrosion 

protection. 

(2) Individual specialty coatings are defined in 

Appendix A of 40 CFR 63 subpart GG. which is incorporated 

b)· reference. 

"TopcoOl" means a coating that il> applied over a 

pruner or component for appearance. identilication, 

i.:nrnouOagc. or protection. Topcoats that are defined as 

sp.;cialty coaiings arc not included under this definition. 

RJ07-3S5-5. Emission St.'lndards. 

(I) The owner or operator shall not cause. pem1it, or 

allow the emission~ of voes from the coating of aerospace 

vehicles or componenis io o.ceed: 

{a) 2.9 pounds per gallon of coating, C'tcluding 

water and exempt solvents. delivered to a coating applicator 

that applies primers. For general aviarion rework facilities, the 

voe limitation shall be 4 5 pounds per gallon of coating, 

excluding water and e.'<empt solvents, deli~·cred to a coating 

npplicmor thnt npplies primers; 

(b) 3.5 pounds per gallon of coating, excluding 

'~ Iler und exempt solvents, ddiveretl to 11 coating upplicator 

t.h.11 applies topcoats (including self-priming topcoats). For 

g.:ncnil aviation rework filci lilies, lhe voe limit shnll be 4.5 

pounds per gnllon of coating. excluding water and exempt 

~olvents, dt:l ~ere-0 to a coating applicator that applies topcoats 

(mduding self-priming topcoat:.): 

tc) 5.2 pounds per gallon of coating, excluding 

water and exempt solvents, delivered to a 1:onting applicator 

that applies Type I chemical nulling maskanr; 

(d) 1.3 pounds per gallon of coating. excluding 

water and exempt soh'ents, delivered to a coating applicator 

thar applies Type IJ chemical milling maskmil~; and 

(d) rmissions of voes from specialty coatings in 

e\cess of the amounts specified in EPA-453/R-97-004. 

Oi.:cembcr 1997, page B-2. hereby incorporated by reference. 

(2) The owner or operator may Alternatively comply 

\\ith R307-J55-5(1)(a) ihrough (d) by using an add-on control 

dn,ice as ~,,.:citied in R307-l55-9 

(3) ·111c following coating applications are ci.cmpt 

from the voe C<)ntcnt limits in RJ07-355-5(1): 

(a) Touchup and repair operations 

(b) ~se ofhand-hdd spray can application method 

(c) O.:partrneut of Defense cla~sified cooting5. 

(d) Coating.~ ofsrm:c vehicles. 

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(el Facilities that use separate fonnula11on$ m 

volume~ of less than 50 gallons per year l~ject to a nrnxi111um 

exemption of 200 gallons total for such fonnulauon:. npplicJ 

annual!) 

R307-355-6. Application Method. 

(I ) No owner or operator shnll apply any primer or 

topcoat unless the primer and topcoat is applied with 

equipment operated according to the equipment manufucturcr 

specification~ or b~ the UM: of one of th~ follcw .. ing method~ 

(o) ElcctroS(lltic application: 

(b) Flow/curtain coat; 

(cl Oip/clectro<lcposition coat: 

<d) Roll coat; 

(Cl Brush couung; 

( tl cotton-lipped ~·wab application; 

(g) High-Volume. Low-Prcssun: (HVLJ>) Sprdy; 

(h) Hand Applic1111on Methods: or 

{i) Other coating application methods that ach1c'c 

emission rcductioos ~uivnlcm 10 HVLP or d~t ~tallc ~pr,iy 

application methods, as dctem1incd u;;cording ttt the 

requirements in 40 CFR 63.750(i). 

(2) ·111e following conditions ar.: exempt from R307· 

355..()(1): 

t d} Any situation that nomiall) requires the use of an 

airbrush or l.lll extension on the spray gun to properly reach 

limited access spaces. 

(b) l'hc appllcallon of coatings that conta.in fillers 

that advcri;ely affect atomi7lltion with I IVLP spray p,uns and 

that .:annot be apphcd by any of lhc application mctJtods 

specified in R307-355-6. 

( c) The application of coatings that nom1ally have 

dried filrn th1d11es~ of le'>.~ than 0.0013 centimeters (0.0005 

inches) ancl that canntll he applied h) ally of 1 he application 

methods ~pcc1ficd in R307-355-6. 

( d) 'l he use of airbrush apphl;llt1on mett1od> for 

stenciling. lettering, and other identification markings. 

methods. 

(c) The use of hand-held spra} can application 

(f) Touch-up and repair operations. 

(gl Application of specialty 'o.1tings. 

R307..J55-7. Work Practices and Recordkeeping. 

I I l Control techniques and woil- practices shall be 

irnplemcnrcd at nil times to reduce VO(" emission~ from 

fugitive cypc sources. Control techniques and wori.. pr.1ctLCCS 

shall include, but are not limtteJ to: 

(a) Storing all VOC-concaining coatings, adhesives, 

thinnCN and coating-related \\a,1c materials in clo....:d 

container~. 

(bl Ensunng lha1 mixing and toragc contu.incr., used 

for VOC-containing coatings, adhe iv e~. thinners, and coflting· 

related waste material are kept closed at all times .:xccpl when 

dt:positmg or removing the~ materials: 

(c) Minimizing spills of VOC-containing co.iting:;, 

adhesives, thinners. and coalmg-relared waste materials: and 

(<l l Ccmvcying VOC·containing co ting~ adhc~tvcs, 

thinners. and coating-related waste mai.cnab from one locaLion 

lo another in clo~ container or pipe~ 

(2) J\11 sources subject to RJ07-355 ~hall maintain 

1'Cl;u11.ls Jc111onstra.ting compliance with all provisions of R307-

355 on an annual basis. 

(a) Records shall include. hut not be limited 10 , 

in'vcntory and produc1 data shc..:ts or all coatings and solvents 

subjw to R307-J55. 

(b) These records shall he ~ailab c to the Director 

upon requc$t. 

IU0?-355--8. Solvent Cleaning. 

( J) II and-wipe cleamng.. Clea111ng solvents used in 

hand-wipe cleaning. operations ~hall m~-.:t one of the following 

requirements: 

{a) I (a\IC a VOC composne vapor pressure less Utan 

or equal 10 45 mm I lg at 68 degree~ Fahrenheit: 

(b) 1-lav(' ilrl aqueous cleamng solvent in which wat.:r 

is nt least 80% of the solvent as applied: or 

(c) Have a low vapor pres$urc hydrocarbon-based 

deaning solvent. 

{2) The following exemptions apply: 

(a) Ck~ning during. the manuf:Jclure, assembly. 

installation. mainu:nimce, or testing of coniponcnts of breathing 

Ol\ygen ~ystems that arc exposed 10 the breathing oxygen. 

(b) Cleaning during the manufacture, assembly. 

talla ion. mamten.ince. or te.\1tng of pan~ suba..c;.<;emblies. or 

assemblies that are exposed to stt ong oxidi7.ers or reducers 

(e.g., nitrogen tctroxide, liquid o:--ygen. hydrazine). 

(c) Cleaning and sLJrtiii:e activation prior to adhesive 

bonding. 

(d) Cleaning of clc:ctronics part<> and assemblies 

containing electronics parts. 

(c) Ckaning of aircraft and ground supporl 

equipment lluid systems that arc exposed 10 the lluid, includin!l 

nir-to-nir heat c.xchnng.-rs and hydraulic flu id S)Sl.ems. 

(f) Cleaning of fuel cells. fuel tan"5. and confined 

(g) Surface cleaning of' solar cells, coated optics, and 

thcnnal control surfaces. 

(b) Cleaning during fabrication. assembly. 

in~tull:u ion. and maintenance of upholstery. curtains. carpet . 

and other textile materials used on the interior of the aircrall. 

(i) Cleaning of metallic and nonmetallic materials 

us.:d io honeycomb cores during h~ manufacture or 

maintenwicc of these cores. and deaning (If the completed 

core~ used in the manufacture of aerospace vehicles or 

COHlponents 

li) Cleaning of aircmfl trtu1sparcncic!l, 

polycarbonate. or glass :<ubstrmcs 

(k) Cleaning and solvent usage associated Ytith 

m.cdl'Ch aml development, qualit) control. or labor:1tory 

testing. 

ii) Cleaning opcralions. using nonflammable liquids, 

conJuctc<l within Ii ve 11.-et of cncrgi/.cd electrical systems. 

(3) Flush cleaning Cleaning .olvcnt:> used in !lush 

clean mg of pans, asscmhlics and coating 1m1t compon.:nts must 

be emptied into nn enclosed conwm~r or collcc-tion system tha1 

is kept dosed when not in use. 

(4) Spray gun cleaning /\II spra)' 11-un~ shall be 

cl.::m ~'d by one or more of tJtc following methods· 

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(al l:nclost.xl ~y<.1cm that 

is closed at all times except 

when inse1ting or removing the ~prny gun. If leaks in the 

system arc found, l\.'j)airs shall he made us soon as practicahk but no later than 15 clays uOer the leak was fo und. If the leak i~ 

not repaired by the 15th d:J.}. the clcaning ~lvem shall bc 

removed and the cm;lo~d ckmt(r ~hall he 'hut do\\n until the 

leak i~ repaired or its use is pcnnancntly di!<continucd. 

(b) Nonatomiz\'d cle-J.11 1tlJ:!. 

(i) Spmy guns sh·.ill he cleaned by plul"ing clc:U1ing 

solvent 10 the prTMurc pot and forcing it through the gun i;ith 

tht· awm

izing. cap 111 plac« 

(ii) No Jtomi7ing air is lo he us.:d. 

(1ii) TI1c cleaning solvent fi-orn the spray gun ~hall be 

direct.:d into a vat, <lrum. or other waste container that is dosed 

when 

not m use. 

(c) Disassembled spray gun cleaning. 

(i) Spray 

guns shall Ix cleaned by disassembling and 

cleaning the components by hand in a "al. which shall remain 

clo:,cd 

at all times excepr when in use. 

(it) Spray gun components shall be soaked in a \'at. 

\\hich sha ll rcmnin closed during the soaking pcnod and when 

not inserting or removing components. 

(d) Alomizing spray into a wa. te comaine1 that is 

fiUcd with a device designed to capture atomized solvent 

cmi:.5ions. 

(c) Cleaning of rhe nozzle tips or automated ~pray 

equipment systems. c.xccpt for robotic $)'Stems lhat <'llll be 

programmed to spmy into a closed container, shall be exempt 

from these cqu reme l~ . 

R.307-355-9. Optional Add-On Control$. 

(I) T11e owner or operator mny install Md maintain 

an incin~rator. carbon adsorption. or any other add-on en11:.s1on 

control device, provided that the emission control device will 

auain at least 81% efficiency performance:. 

(2) I he owner or operator of a control device system 

shall provide documentation thac the emU.sion control system 

will artain the requirement.~ ofRJ0?-355-9. 

(3) Emil'--;ion control sy~tc s shall be operated und 

maintained in ac.-cordw1cc \~ith the mMufocturcr recommendations. The owner or operator hall mointam for a 

mrnimurn of two years records (If operating and maintcnanCI! 

sunicit:nt to demonstrate that the equipment i!> being operated 

and maintained in accordance with the man11fflcturcr 

recommendation$. 

RJ07·355-l0. Compliance Schedule. 

!\ll sourtc:; '~ilhm Bo" 

Elder, l'ach(. Dil\'ll>.. Salt 

Lake. Toe>clc. Utah und Wcb~r ce>untics shall he in eomplmncc 

by 1.mual) I. 2014 K E.Y: air t>ollutio

n, coatini:, acrosp~ce 

Oate of Enactment or Last Su bstantive Amendment: 

February I, 2013 

Authori'ling, and Implemented or Interpreted Law: 19-2-

104(l)(a) 

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