# Aerospsce NESHAP 

# Exemptions

Exemption 

## from All Requirements
Specialtv Coatings, Low

## Volume 

## Exemption: Combined

# total of 

# 200 gallons 

# of lowvolume specialty 

## coating exempt use in 

## addition

# to 200 gallons

# for primers/topcoats/chemical milling maskants. (Proposed Section æ.7

# a\g))
Specialtv Coatines, HAP-Free 

## Specialtv 

# Coatings: Exempt 

## specíalty coatings 

# that do not contain HAP 

## (less

## than L.O/O.I% 

## HAP). (Proposed Section 63.7 41,(f)l



## Exemption

## from lnorganic Limit



## Coating

# Operation: Define spray-appliedcoating 

## operationto exclude 

## where no

## atomization. Exempt non 

## spray-applied coating 

## operations. (Proposed Section 63.742) 

# Specialtv Coatings lnorganic Standard-Specific Exemptions: Exempt 

## the

## following: 1) 

## spray 

## application impractical 

## to perform 

# in booth (effective immediately 

# upon approval 

# from local 

# permittingauthority, included 

# in part 7O/71, 

# permit 

# at next 

# renewal

# or significant modification),

# 2) spray application 

## controlled by equipment 

# orwork practices, 

## 3) spray application 

## from hand-held device 

## with capacity less

## than 3.0

## fl oz. (proposed 

## section

# $.7 asþ)Ø)(ix) through 

# (xii))

Exemption 

## from Organic 

## Limit
Recoating 

## of Assembled 

## Aircraft: Organic HAp 

## should not apply 

## to coating 

# or recoating operations 

# if original coating formulation required 

# for governmental approval 

# is used. (Proposed Section 63.741(k)) 

## Exemption 

## from Application Equipment Requirement 

## or Equivalencv 

# ¡ Exempt Non-Sprav 

## Application 

# Methods:Allow

# the following non-spray 

## application methods,

# which achieve 

# the same or greater reductions as 

## HVLP:

## web coating, 

## coil coating, touch-up markers, 

## marking pens,

## trowels, spatulas, 

## daubers, rags, 

## sponges, and mechanically 

## and/or pneumatic-driven syringes. 

## Clarify

# thatthe application provisions 

# are 

# not applicable to operations applying 

# the following types

# of specialty coatings because 

## they are 

# not atomized evenwhen applied

# with spray 

# equipment: adhesives, sealants, maskants, 

## caulking materials, and 

## inks. (Proposed Section 

## 63.74s(f)(1); 63.7as(f)(3)(vii))


# o Exemptions 

# for HighViscositv CoatinRs 

# and

# Air Brushes: 

## Application equipment provisions 

## should not apply 

## to 1)

## specialty 

## coatings 

# with less

## than 20 grams 

# of VOC 

## per liter, 2) Specialty 

## coatings 

# with aviscosity

# of 200 cent¡poise 

# or greater, 

## and 3) 

## application 

## of specialty 

## coating

## with a

## detailing unor 

## airbrush. tt 

## is

## operationally impractical 

# to apply low VOC 

## and high viscosity 

## coatings

## with HVLP. 

## (Proposed Section 

## 63.745(fX3) (viii) through (x)) 

## Specialtv Coatings

# Application Equipment-Other Application 

# Methods: Explicitly

# allow

# for the following application 

# equipment: L) 

# air assisted 

## airless

## and airless spray guns, 2)


## screen 

## printing, and 

## 3) inkjet 

# printing. Air assisted 

## and airless 

## have 

# been demonstrated 

# as equivalent

# to HVLp. (proposed Section 

## 63.74s(f)(1)(ix) and (x)) 

# Specialtv CoatingsApplication Equipment-Equivalencv 

## Demonstrations: Allow use

## of method 

## of choice 

## to demonstrate
eq

## uivalency 

## to HVLP. (

## Proposed Section 

## 63.745(f)(1)(xiii)

### NES

### HA

### P Exemptio ns-Pr opos ed Languøg e

$63.741

### Applicability and 

### designation of affected sources. (a)'1'his subpatt appJics

### to facilitics 

### thât arc cogagcd, either 

### in part 

### or 

### in wholc, 

### in rhe manufacturc 

### or rcwork 

### of commercial, 

### civil, or 

### milital' aerospacc vehicles

### or componcnts and 

### that arc major sourccs as defincd in $63 2. 

## þ) The owocr 

### or opcrator 

### of an affcctcd source shallcomply 

### u,ith thc rcc¡uircments 

### of this subpartand

### of subpart,\ 

### ofthis par¡ cxccpt as specified in $63 743 (a) and'l'able 1

### ofthis subpart. (c) 

### '\ffcctcd sou¡ces. 

### l'he affcctcd sources 

### to which thc provisions 

### of this subpart appl)' are specifìcd ìn paragnaphs 

### (c)(1)through 

### G8)

## of this scction. 

## 'fhe âcti\-itics 

### subjcct

## to this subpart 

### arc 

### limitcd

## to tl.rc r¡anufacturc <>rrcw<¡rk ofacrospace vehiclcs or componcnts asdcfined 

### in this subpart. \Vhere adisputc arises relating 

### to thc applicability 

### of this subpart 

### to a spccific actii,it¡', 

### thc ou/ncr 

### or opcrator shall demonstratc whethcr or not thc actii'ity is regulatcd under this subpart (1) ìjach clcaning operation asfollows: (i) ,,\ll hand-wipe cleaning opcrationsconstitutc an affected sourcc. (ii) Each sprây gun clcaning operation corstitutes anaffcctcrl source. (üì) 

### ,\ll flush cleaning opcrations constitutc an 

### affcced sc¡urcc. 

### (2)Jror organic 

## ll,\P orYOC emissions, cach 

### primer application operation, primer applications âtthc facility. 

### (3) 

### Iìor organic 

### IJI\P 

### or\/OC ernissions, cach

### topcoat application operation, 

### which 

### isthe total 

### of all



### which is the totaÌ

### of all topcoat applications atthe facilig'.



### (4$ Irot organic I

### I.\P or

### YO(. emissions, cach depaintiagoperation, which is the total 

### of alldcpainting atthc faciliq'. 

### (5!) Flach chemical 

### millirg masì<ant application operation, 

### whrch 

### is thetotal

## of all chemical milling maskant applications atthc faciliq. (61) ilach waste storâgc and handlìng operation, which isthe total 

### of all waste handLing ancJstorage atthc faciliq'.
spccialty

### coating application opcratiori subjcct

### to 5-63

## 745 or a dcpainting operation subjcct

## to $ 63.146þ)(4) (d) 

### ,'\n owncr 

### or opcrator 

### of an affected sourcc subject 

### to this subpârt shall <¡btain an operating

### pcrmit from thc 

### pcrmittingauthoriq,in the Statc in which the sourcc is located. l-hc owner or operâror shall apply 

### for and obtain such 

### permit in accordancc 

### with the regulations contained 

### in part 70

### of this chapter and 

### in applicablc Statc rcgulations. (c)

### Àll wastcs 

### that are detennined 

### to bc htzardots wastcs under the 

### llcsourcc Consen'ation and lì.ecovery Act 

### of 1916 OL94-580) 

### (llclìA) as implementccl by 40 CIìR parts 260 

### md 261,, and thar are subject to 

### lìClì¡\ rcquirements 

### as implcmcntcd 

### 40 CIFR

### 262 throuLgh 268 âre excmpt 

### from the requircmcnts 

### of this subpart 

## (f'lhis subpar 

## @docsnOtfegulaterescarchandder.elopmcnt,quality control, and laboratorytesting activities, chemical 

### milling, metal finishing, clectrodeposition (cxcept 

### for clcctrodeposition 

### of paints), compositcs processing (cxccpt 

### for clcaning and coating 

### of composite parts 

### or compoflcnts that become part 

### of an acrospâce r.ehiclc <¡rcomponent as

### wcll ascomposite tooling that comcs 

### in contact

### with such composite parts

### or componcnts 

### priorto curc), electronic parts and assembJics (cxcept

### for clcanittg andtopcoating 

### of complctccì asscrnblics), manufacture 

### of ai¡craft transparcncics, and wastcwater

oPeratìoûs 

### at acrosPace facilitics. 

### 'flrcsc tcquircrncnts 

### do 

### not applv

### to the rcwork 

## of aircraft <n airctaff colrìPoncnts 

## if thc holdcr 

### of thc Fcdcral 

### ,\r'iatiol .,\dministration 

### (F.\À) 

## dcsþ approval, 

### or thc holdcr's Ìiccnsce, 

### is

## lot activcll' manufacturing the ai¡craft 

### or aircraft 

### componclrts 'l'hese rcc¡uirements also 

### do not aPPl)' 

### to parts ancJ asscmblics 

### not critical

### to thc vchicle's structurâì 

### intcgriq' 

### or flight pcrfonnancc 'fhc rcquircmcnts 

## of this subpart als<¡ d<¡

### notappll to prirners, topcoats__speialE e<xLtings, chcrnical rnilling maskailts, striPPcrs, and 

### cleanilg soh'cnts containing 

### IIAP ancl

### \¡OC at conccntrations ìcssthan 0.1 perccnt 

### b]'mass 

### for catcinogens

### or 1.0 

### pcrccnt bv mass

### for loncarcinogcns, as

### dctclnincd from manufacturer's 

## rcpres(lrtati()ns¡_S!gh_4!-i4_4 'l'o thc cxtent 

### thrt an



## . .'\ddi1!oq4l spccific cxcmptions 

### from fggglargql co\¡cragc âfe sct 

### fofth in parag'raphs 

### ("), (Ð, 0.), (r) and

## 0 of this sectìon 

### and $\_63.742, 

### ß.7aa@)(), 

### þ), (c), 63.7 4s (a), (Ð

### (:), (g) (+), 63.1 46 (a), 

### þ) (s), 03.7 a7 (c) (3),

## aú û.t ae @) (g)

### 'l'hc rc<luircmcnts for prirncrs, topcoats, $63-747do ncx applv to thc usc

### of low-volunc coatinpp 

### in thcsc catcgodes 

### for rvhichthc a¡nual iotal 

### ofcach scfarâtc fcrrmulation uscd at afacilitv docs

### not cxcccd 189 I (50 g"al), and thc cornbirrcd annual total 

## of¡ll sucl.r prirncrs, 

## toPcoats! nd chcrnical 

### milling rnaskalts u¡-ed at a

### facilin' does rrot cxcccd 757 I (200 gal).


## T5lliter+{20ègaù--Prirn ropcoâts,af,d-Spççialsso:ltliqgÞ-cxcmprcùundtrprra-g,r-apF(f)-oFnliis sEfüorj 

### ald rmder $-63.745(Ð(3) and fu)(a) arc 

### not includcd 

### inthc 50 and 200 gal lirnits. Chcrnical rnilling maska¡ts cxcmptcd undcr\_63.747(c)(3) are also not includcd 

### in thcsc limits. 

## ft) Rcgulatcd activitìcs associatcd 

### with spacc vehiclcs 

### desþcd 

## to trâ\,cl beyoncJ

### the 

### limit 

## of the carth's atmosPhcre, 

### including but not lirnitcd 

### to satclÌitcs, spâcc stations, 

### anil the Spacc Shuttlc S),stern (incìuding 

### orbitcr, extcmal tanks, andsolid rockct boostcrs),arc excmpt 

### from thc rcquircmcnts 

### of this subpart, cxcepì 

### for depainting operatìofls found 

### in $63.746 (i) 

### ,\ny watcrbomc coating 

### fot u'hich thc manufacturcr's suppliccì <latatlcmonstratc 

### that orgaflic JJÀP and 

## \'()(l contcnts arc lcss 

### thrn or cqual

### to thc orgânic ITAP and 

### YOC contcnt limits 

### for its coating q,pc, as spccìficd 

### in\$63 745(c) and 63.747(c), ìs cxcrnpt

### from thefolkrwing rcguitcments 

### of tl.ris subparr 5$63 745(d) at'td (e), 63.7 41(d) and (c), 63.7 49 (d) and (h), 63.750 (c)through 

### ft) and

### ft) ttrrough (n), 63.152 (c) and 

### (fl, and 63'153 (c) and (e). .-\facility shalÌ 

### maintai¡ thc manufacturcr's supplicd data and annuaì purchasc rccords

### for cach exempt waterb<trnc coating rcadily availablc 

### for ilspcction 

### ald rcview and shall rctain thesc data 

### for 5 ycafs. 

## 0 lìcgulatcd activities associated

### witb the rework 

### of antiguc aerospacc vchrclcs 

### or components arc 

### cxer¡pt

S63.742 

### Definitions. 'I'erms used 

### inthis subpart are dcfincd 

## il thc ,,\cq 

### in subpart

### Aof thìs part, 

### or 

### inthis scction as follows:



## 2lPage Comment [AlJ: This proposed language addresses the applicabilitv ofthe ruleto specialtv coatingsthat do not contain HAP. The proposed language w¡ll encourage the use of no-HAp coat¡ngs by allowing owner/operators to include them ¡n averagrng

Comment [A2l: This proposed language addresses the request for an addìt¡onal exempt volume of coatings spec¡fic to specialty coat¡ngs

Comment [A3]: The purpose ofth¡s proposed language ¡sto allow the or¡ginal coat¡ng formulat¡on to be used where required for conformance with FAA and other governmental requ¡rements

Comment [44]: lhe purpose of this proposed languðge ¡sto clarify what ¡s and whãt is not considered a spray applied coat¡ng operêt¡on.

### mach;cs.

5-63.745 Standards: 

## Prime topcoat 

### g4djg!4!@,Adgglapplicationoperarions. (e) 

### lirch r)wn(r'r)r'opcrrtor of a ncw

### or cxisting

## prìnre to¡coat. or spccialtv coating applicrtion 

### o¡crrtìtrr subiect 

### to this subpart shall 

### cornpll with thc rccluircmcnts spccificd 

### in para¡¡raph (c)

### of this section 

### for those coatings 

### that arc uncontrollcd 

### (no 

### coltroì dcvice

## is uscd

## to rcducc organic I

### L,\Ì) crnissions 

### from thc oPcration), and in paragraph (d)

### ofthis scction

### for thosc

### coatilgs that arc controllcd (rrganic I

### L\l) crnissions 

### frornthc opcration are reduccd 

### bt' thc usc

## of a control 

### dcvicc) ,\crospace cc.¡uiprncnt 

### that 

### is no ktngcr opcrationaì, 

### intcndcd 

## for pubÌic displav, an<J

### not casi\' capablc 

## of bcing moved 

## is cxcrnpt 

### from rhc rcc¡uircmclts of this scction. 

## þ) Dach owner 

### or opcrator shall co:rcluct the handlin¡¡

### ald transfcr 

### of

## primers tr¡lcoats,jqd_..!ìpççi4lE coatings to 

### orfrorn containcrs, tanl(s, \/ats, r'cssels, andpìpìng systcms in such a

### malncr that rmnirnizes spills. (c) Unct,ntrollcd 

### coaturJrs or$anic I

### l.\l) end

### \'( X.cr¡rtçnt lcvt'ls l.lach ¡rwrrcr ()ropcrât(rr sìralì 

### compl¡.uitìr thc organic I

### L\P and

### \'OC contelrt 

### limits spccifìcd 

### in parag'raphs (c)(1)

### through (c)(4!) 

### of this scction 

### for thosc coatings that arc uûcontrollcd (1) Organic I I

## \l) cmission"^ 

### from prirncrs shall bc 

### limitêd

### to an organic 

## [r\Ì) content lcvcl <¡f

### no more than: 540 g,/1.

### (45Ib/gal) of primer (less watcr), asâpplied,

### for gcncral ar'ìation rework facilitics; 

### or 650 g,/1, (5

### 4lb/gal) of cxtcrior 

### primcr Qess watcr), asapplicd,to largc comrncrciitl 

### rictaft componcnts 

### þarts

## or asscmblics)

## or fullv assemblcd, 

### largc commcrcial akctaft 

### at cxistìng affected sourccs tbat 

### lrroducc

### ful\, a".cmblccl, Jargc comtnercial aircraft; 

### or 350

### g/1, Q.9 lb,/gal) 

### of primer (css watcr), as applicd. (2)

### \'OC cmissious frorn prirncrs shall bc lirnitcd to a

## \¡(Xl contcnt lc\.cl 

### of no morc tha¡: 540 

### g/1, (a.5 

### lb/gal) 

### of prirrrcr (css water and cxcrnpt sr¡h'cnts), as applicd, 

### for gcneral 

### ar.iatiol rcworì< facilitics; 

### ot 650

### g/), (5 a 

### lb/gal) 

### of extedor 

### primcr (css water and exempt solvcr.rts), as applied, 

### to largc commcrciaÌ air-craft cornponcnts 

### þarts or assemblics) or fuì11' 255smblerJ, 

### largc cormnercial 

## ¡itcrtíÍtt existing affccted sourccs that producc

## ful\' asscmblcd, largc commcrcial aitctafT; 

### or 350

### g/L Q9lb/gù) of pnmer Qcsswatcr and cxcrnpt solvcnts), as applìcd (3) Organic

## ll\P cmissions 

### flom topcoats shall bc 

### limitcd 

### to a¡ organic 

### Il,'\P contcnt leyel

### of no morc than: 420

### g/L Q.5lblgal) of coatirg Qcsswater) asapplicd

### ot 540

### g/L (a.5 

### lblgal) of coating (lesswatcr)
as appLiedfor gcncraÌ ar.iation 

### rcwork facilitics. Organic 

## ll,\P cmissrons 

### from sclf

### primilg topcoats shall be 

### limitcd to au organic I

### l,\Ì) contcnt lcvcl 

### of no more than: 420 g,/L (3.5 

### lb/gal) of sclf-priming topcoat Qess watcr) as applied 

### or 540

### g/), (4.5 ll':'/gal)

### of sclf-priming topcoat (less watcr) asapplicd 

### for general aviati<¡n rcwork facilitics. (4)

### \/OC emissions 

### fiorn topc()ats sball bc lirnitcd to a

## \'()(l contcnt lcvcl of no morc than: 420 

### g/1. (3.5 

### lb/gal) 

### of coating (lcss 

### watcr and 

### cxcmpt soh'cnts) asapplied 

### or 540 

### g/1, (4.5 

### lb/gal) 

## of coating (lcss wâtcr and cxcmpt sohrcnt$ as applicd 

### for gcncral aviation rework f¿cilitics. 

## \/()(l emissions frr¡m sclf- priming topcoats shall bc limìted to a

### \IOC contc¡t lcvcl of no morc than: 420

### g/L (3.5 

### lb/gal) of self-prirning topc()at (lcsswatcr and cxempt soh.ents) asapplicd <':r 540

### g/), Ø 5 

### II:/grl) of self-priming topcoat (lcsswatcr) as appliccl for gcncral aviation rcworÌ<facilitics

coatrnû tvoe.



## 3lPageable 1. Specia.lty Coatings -- FIAP and

### \¡O(l Content Limits 

### Coating Type H,AP 

## Limit 

## uL(tb/ganoù7 VOC 

## Limit



## glL (tb/ gatton¡I

Ablative Coatins 600 (s.0) 600 15.0) Adhesion Promoter 890 

### 0.4\ 8e0 (7.4) Adhesive Bondinp Primcrs: Cured 

### ú250oF or below 8s0 (7.1) 8s0 (7.1)

Adhcsivc Bondins l)rimers: Curctl above 25OoF 1030 (8.6) 1030 18.6)

Commercial 

### Interio¡Adhesivc 760 (6.3) 160 (6.3) Cyanoacrylate Adhesive 1,020 (8.5) 1,020 (8.s) Fuel TankAdhcsive 620 (s.2) 620 (s.2) Nonstructural Adhesivc 360 (3.0) 360 r3.0) Rocket lVlotor Bonding

### Adhesle 8e0 (1.4) 8e0 (7.4) Rubber-based Âdhesive 8s0 (7.1) 8so 

### 0.1) Structural Autoclavable Adhesive 60 10.5) 60 (0.5)

850 17.1) 8s0 (7.1) Antichafe Coating 660 (s.s) 660 (s.5) Bearing Coating 620 (s.2) 620 (5.2) Caulkins and Smoothinø 

### (iomoomds 850 t7.1) 850 17.11 550 14.6) 550 (4.6) Clear Coating 120 (6.0) 120 (6.0)
650 (,5.4) 650 15.4) Comoatible Sub strate Primcr 780 (6 s) 780 (6.s) Corrosion Prevention Compound 710 (s.9) 110 (s.9) Cryoqcnic Flexible Primcr 645 (54\ 645 (5.4\ Cryoprotective Coating 600 (s.0) 600 (s.0) Dry l-ubricative Mate¡ial 880 (7.3) 880 

### 0.3) 800 /6.7) 800 (6.7)

Electrostatic Interfcrence 

### Discharge 

### and Electromagnetic

Ì,MI) Coating 800 (6.7) 800 16.7r

Elevated-Tet Commc¡cial

. 

## Ècrature Skydrol- Resistant



### ímef 740 (6.2) 140 (6.2\

Epoxy Polya 

### idc'l'or;coat 660 (5.s) 660 (s.s) Fire-lìesistar 

### linterior) Coatins 800 16.7) 800 l(r.7)
Flexible Priml 

## Í 640 (5.3) 640 (5.3) 

### Flight-Test Coatings: N{issile 

## or Single Usc 

### Aircraft 420 (3.5\ 420 (3.5\

Flisht-Test Coatines: 

### All Other 840 (7.0) 840 (7.0) 

## 4lPageFuel-Tank Coating 720 (6.0) 720 (6.0)

High-Temperature Coating 8s0 (7 1) 8s0 

### 0.1) Insulation Covcring 140 (6.2\ 140 (6.2\ Intc¡mediate Releasc Coating 750 (6.3) 7s0 (6.3) Lacquer 830 (6.e) 830 (6.9) Bonding Nlaskant 1,230 (10.3) 1,230 (10.3) Critical Use 

### a¡d l-ine Sealer Maskant 1.020 18.5) 1,020 (8.5)

Sea-l (loat I\faskant 1,230 (10.3) '1,230 (1,0.3) Metallizcd Epoxy Coating 740 (6.2) 140 (6.2) 

### Mold Release 780 16.5) 780 16.5) Optica.lAnti-lì.cflective Coating 

### ts0 (6.3) 7s0 (6.3) Part Marking Coating 8s0 (7.1) 8s0 (7.1) Pretreatment Coating 780 (6.s) 780 (6.s) Rain Erosion-Rcsistant (ìoatinq 8s0 (7.1 8s0 (7.1) 

### lìocket Motor Nozzle Coating 660 (s.5) 660 15.5) Sczle 

### Inhibitor 880 (7.3) 880 O.3) Screen 

### Print Ink 840 

### 0.0) 840 (7.0) 280

## e3\ 280 (2.3\ Sprayable Sealant 600 (s.0) 600 (s.0) Silicone insulation Material 850 (7.1 8s0 (7 1) Solid Film l-ubricant 880 (7.3) 880 a/.3) Spccialized Function Coatinq geo (t.4) 8e0 

### o.4) Temporary Protective Coating 320 Q.7\ 320 Q.7) Thermal Control Coatine 800 (6.7) 800 (6.7) 675 (5.6\ 675 (5.6\
Wins Coatino 850

## í.1) 850

## í.1)

qa-llons) 

### of coatinø less coatins lesswatcr and lcss cxcmot solvent.

(tJ) 

### (iontrollcd coalirlgs-control s)'stcm 

### rctluiremcnts 

### liach control s¡srcm shall redrrcc thc opcration's organic 

### IìÂP and

### \¡()C cmissions 

### to thc atmosphcrc by 8170

### or g'reâtcr, tal<ing 

### into account captureand dcstruction 

### or rcmoval efficicncies, asdctermined usingthe proccdurcs in $63.750(9) when a carbon adsorbcr is uscd and 

### in \63.750Qi) when a control device othcr than a carbon adsorber is uscd (c) Compliancc mcthods. Compliancc

### with thc organic FLÀP and

### \'OC cofltent limits specifred in 

### paragaphs (c)(1) 

### through (c)(4!) 

## of this section shall 

### be accomplished 

### by using 

### the mcthods specificcJ 

### in parag'raphs (c)(1)

### and (e)(2) 

### of this section either 

### by themseh.cs 

### or 

### in conjunction 

### with one aûother. 

### (l) Usc

## primcrs tolìcoals (including 

### sclf-¡riming ropcoats). 

### a¡d specialty

### coatings wirh 

### HAP and

## \/O(l content lcvels equal 

### to or lessthan the 

### limits specifred 

### in paragraphs (c)(1) 

## through of this scction; 

### or (2) Use tbe avcraging provisions clcscribed 

### in $ó3.743(d) 

## 5lPage

### (0 .\nnìication 

### cquiDmt'¡t l'lxccnt as

### nrovidtd in 

### oarlmloh (fl(3)

### of this scctiorr. cach owncr or

opcrator of ancw or cxistìilg

## prirrìe topcoat (iflcluding sclf-priming topcoât),_of specìalty coating application opcration subjcctto this subpart in which any

### of thc coarings contain organic 

### Il-'\P orYOC shall

### comp\'with thc requir-emcnts specified in paragraphs 

### (!(1) ancl (f)(2) 

### of this scction. (1) 

### !\ì)

## primcrs lgpçgltq (ilcluding,sçlf 

## pri-jrg 

## !1,I,.94!! shall be appticcl usin¡¡ onc or morc 

### ofthc application tcchniqucs spccificd in paragraphs 

## (f(1)$

## through xüi) 

### of this scction (i) 

### Flow/curtain coat application; (ü) 

### Dip coat ap¡lication; (iii) Roll coating; 

### (ir) Brush coating; 

## (i') (ìotton-tippcd swal¡ application; (r.i) l.ìlcctrodcposition (dip) coating; (i'ü) Iligh

### \olume lou¡ prcssurc (IJYLP) sprayrng; (r.üì) ì,)lcctrostatic spral' application; 

### or

(ix

### xi) Other coatilìg applicâtion rncthods 

### that achicvc 

### cmissio¡ rc<luctir¡¡s cquiyalcnt 

### to 

## IIlLp or clcctrostatic spray application methods, 

### as detcrmincd accordhg 

## to thc rcguilemcnts in \63.750(Ð. 

### (xü) For spccialty 

### coatings: wcb 

### coating coil coating, touch-up markcrs, marking pcns,trowcls, sPattÌlîs, danbers, rags,spongcs, and mcchanically

### atd/or pncumatic-driven syringcs, 

### or othc¡ nonspray application mcthods.

transfcrcfficicncv achicvcd. 

### (2) 

## r\ll applicatir¡n dcvices 

### used

### to appl)' 

## primers topcoats 

### (including self-priming topcoats)+__e! specia-ltv 

### coatings shall 

## bc opcratcd according

## to corìpân)' proccdures, 

### krcal spccified opcrating proccdurcs, 

### and/or the manufacrurcr's spccifìcations, whichcvcr is mosr

### stdngcfl! ât timcs. [,quipmcnt modified by thc faciliq' shaìl maintain atransfer cfficìcncy equir.alcnt 

### to ITYLP and electrostatic spray application tcchnic¡ues. (3)The folìowing situations are cxcmpt frorn thc rcqnircmcnts of paragraph 

### (f (1)

### of this scction: (i)

### Any situationthat normally rcquires the uscof an ai¡b¡ush or an cxtension on thc spray gunto propcrly reach limitcd acccss spâces; (ü)

### The application 

### of coatings 

### that co¡tain frllers 

### that advcrsely

### tflect atomjzatton

### wirh 

## llll-p spray guns and that thc permittingagcncv has dctermincd cannot l¡capplicd by any 

### of thc application mcthods spccificiì in patag'raph (f)(1)

### ofthis scction; 

### (iìi)'l'hc application 

### of coatings that nonnally har.c a dried 

### fdmthickncss

### of lessthan 0.0013 

### cc¡timctcr (0.0005 

### in.) and that 

### thc pcrmitting agcncy has 

### determircd cannot be applicd 

### by any 

### of thc applicâtioil mcthods specified in paragraph 

### (f (1)

### of this section, 

## $)'l'hc use 

### of airbrush application mcthods 

### for stenciling, lcttcring, and 

### othcriclcntification markings; (v) 

### 'fhe uscof hand-hcld sprây caû application mcthocJs; ar+d vi) Touch-up and repair operations;' Comment [45]: The purpose of thts proposed language in (f)(1) isto explicitly allow the use of these applicêt¡on methods.

Comment [46]: Th¡s proposed language addresses the request that facilities be allowed to choose the method by wh¡ch to demonstrate that the êpplÌcation equipment isequ¡valent to HVLP.

Comment [A7J:Îhe purpose ofthis proposed language isto clarify that the appl¡cðt¡on prov¡sions
are not appl¡æble to coatl'ngs that are not atomized
even when sprðy-appl¡ed. As noted ¡n our æmments, this ¡simportant to allow hand applicat¡on w¡th adhesives, sealants, maskants, 6ulk¡ng materials and ¡nks. Comment [48]t Th¡s proposed language ¡s based
on an exemption affecting afloor-sett¡ng source. Comment [49]: The purpose ofthis proposed language ¡s 10clar¡fythat the application prov¡s¡ons should not applyto h¡gh viscosity coat¡ngs that are impract¡cêl to applv with HVLP or involvevery small ôpplicat¡ons that result in low em¡ss¡ons. Comment [410]! Th¡s proposed language allows for spec¡flc appl¡@t¡on equipment to be used. These arevery small applicatlons resulting ¡n low emlsstons. 

## 6lPage(g) lnorÉianic JJ,\P emissions. Lìxccpt as providcd in parag"raph 

### (g)(fl 

### ofthis section, each o\\¡ncr 

### or opcrator



### of a ncw 

### or cxistirg 

### primeror, topcoatlp!-Speçialry-çeadt€-applicatìofl 

### opcratiofl subjcct 

### to this subpart m 

### which any

### of the coatings

### that arc spray applicd contain inorganic 

### IJAP, shall

### compll with thc applicablc rcc¡uircmcnts in paragraphs (g)(1)through (g)(3)

### ofttris sectron (1) Apply thcsc coatings in abooth or hangar

## il which air flou, is dircctc<l clownwarcl

## orto ot acrr¡ss thc part or asscmbly 

### bcirg coatcd and exlraustcd through onc or morc outlcts (2) Control thc aìr strcam from this opcration asfollows: (i) For cxisting sourccs, thc ou'ner or operâtor rnust choosc onc 

### of thc f<rÌlowilg: (A) 

### lìefore exbausting 

### it to thc atmosphcrc, pâss thc air strcam through a dr¡' particulatc 

### fìltcr system 

### certificd using 

### thc mcthods dcscribcd

### in $63.750(r) 

### to mect 

### or cxceed thc cffìcicncy datapoints 

### in'lablcs 

## 12ardZloí this scction; 

### or

Table 

### 12--Two-Stage.&restor; Liquid Phase 

### Challengefor 

### Existing Sources



### Table 

### 23-Two-Stage Arrestor; Solid Phase Challenge 

### for 

### Existing Sources

(B) Bcforc cxhausting 

### it to thc atmosphere, pass the ak strearnthrough

awater-wash systcm that shall rcmain in opcration during alJcoating application opcrations;

### or (O) Beforc exhaustingit to thc atmospherc, pass thc air strearnthrough an air 

### pollution coûtrol systcm thât mccts 

### or cxcccds thc efficicncy dâta 

### poiilts in '1'a1¡lcs 12 2¡d ?3 

### of this secrion and is appror.cd bythc 

### pcrmittirg authorir)'

(iì) 

### Ilor new sources, cithcr: Q\) Rcfore exhausting 

### it to the âtlrìosphere, pass the air strcam through adry particulatc 

### filtcr systcm ccrtjfìcd using the methods dcscribcd 

### in $63.750(o) 

### to meet

### or exceed 

### the cffìcicncy data points in Tables 34 and45 

### of this scction; 

### or 

### Filtration efficiency requirement, 7o 

### {,erodynamic particle size range, ¡rm

>90 >5./

>50 >4.1

>10 >22



### liltration effi

### ciencl' requirement. 7o 

### {.erodvnamic Darticle size 

### range. um



### '90 >8.1



### '50 >5.0

>10 

### >26



## TlPage

### Filt¡ation efficiency requirement, oZ 

### \erodynamic particle size range, pm



### '95 >20

'80 >1.0

,0.4? 

### Table 

### 3FTh¡ee-Stage Arrestor; 

### Liquid Phase Challenge 

### for 

### New Sou¡ces



# I tott.4!-Three-Stage Arrestor; Solid Phase Challenge 

### for 

### New Sou¡ces

(B) Beforc cxhausting 

### it tothe atmosphere, pass the air stream through an air

### pollution contlol system thât mcets or exceeds tlìe cfficiency data points inTables 34 and 45 

### of this section and is apptoved bythe permitting authoiity. (üi) Owners or opcratorsof nc$.¡ sourcesthat have commenced construction or rcconstruction aftcr-June 6, 1994 but 

### prior to October 29, 1996 nay comply

### witÌì the following requirements in lieu of the requirements in paragraph (Ð(2Xü) 

### of rhis secfon: (A) Pass

### tìe air strcam through eithcr atwo-stage dry Particulatc 

### filter s1'51sm

### or aw¿terwash system before exhausting 

### it to thc ãtmosphcrc. @) 

### If the primer-or, topcoar- q_Epeei4lry_eoatingcontains chromium or cadmium, control shall consist 

### of a I-IEPA 

### filter system, three-stagc 

### filter system,or other control system equivalcnt to the

### thr". ,tug" filter"system

as approved by the permitting âgcnc)'. (iv)

## lf adry particulatc 

### filter system is used, the following rcquirements shall be mct: (A) Maintain the systcm in good working ordcr;

(B) Install adifferential prcssure gaugc âcross the 

### filter banks; (C) Continuously 

### monitor the prcssure 

### drop across

### thefilter a¡d read and record the pressure 

### drop once 

### per shift 

### or intedock the spray application system 

### to automaticall)' shutdown should the pressure 

### d¡op exceed 

### or fall bclow the filter manufacturer's rccommcnded limit(s); and 

## p) 'l'ake corrective action when the pressure 

### drop exceeds

### or falls below the fiLtcr ma¡ufacturerrs rccommended limit(s). 

### eff ciency 

### requirement, 7o 

### particle size range, ¡¡m



## 8lPage

### (r) 

## lf acolvcntir¡nal watcrwash s1'stern is uscd, continuously 

### monitor thc watcr flow 

### ratc:rnd rtad 

### rnd rcct¡rd 

### thc

### wltcr flow |at( onc( or'r shilt c¡r intcdc¡ck 

### thc sorav



### or cxcccd thc oPcrating Proccdurcs 

## lf a pumpless slstem is used, continuous\' 

### molitor thc booth paramctcr(s) 

### that indicatc performance

## of the booth 

## pcr thc manufacturcr's rccommcncìations 

### to maintai¡ the 

### boothwithin the acceptabÌe opcrâtinéj cffìcìcnc1' rangc 

### rr:d rtad and rccord 

### tllc prramctcrs once 

### pcr shifi 

### or intcrlock 

### thc spray

(3)

## lfthc pressure 

### drop across

### thcdq,particulate filtc¡ s)'stcm, as recordcd pursuâût

### to $63.752(d)(1), is outside the Lirnit(s) specificd by

### thc fìltcr rnanufacturcr 

### or in localh' preparcd operatilrg procedurcs, shut 

### down the opcration immcdiatcly an<l takc corrcctivc 

### action 

## If thcwatcr path 

### in the watcruâsh s)'stcm 

### fails 

### thc r.isual 

### contilruitr'/flow charactcristics chccl<, 

## or thc water 

### flow râtc recorded 

### pursuaût to 563.752(d)(2) cxceeds 

### the limit(s) spccìfìccl 

### by thc booth manufacturcr 

### or in localh' prepared opcratiûg proccclurcs, 

## or thc bor¡th manufacturer's 

### or localh, prepared maintenance proccdurcs 

### for thc 

### filtcr or water-wasb svstcm hâ\,e

### not becn pcrfcrrmcd as schcdulc<J, shut 

### dow¡ thc opcration irnrnediatc\' and takc co¡rectivc 

### action

## Ïre operation shall not bc rcsumcd until 

### thc prcssurc 

### drop 

## or water 

## flow ratc is rcturned

### within the specificd lirnit(s). 

### (4)'fhc requircrncnts ofpara¡¡raphs (g)(t) through (g)(3)

### ofthis scctìon do 

### not apply to the following:

(i) 'l'ouch-up 

### of scratchcd surfaccs

### or damagcd paint; (ii) IIoìc claubing

### for fasteners; (iii) 

### 'fouch-up of trimmcd cdgcs; (ii') Coating 

### prior tojoining dissimilar mctal componcnts; 

### (r) Stencil opcrations pcrformcd by brush or ai¡ b¡ush; 

### (r,) Section 

### joiring; (r'ii) 'l'ouch-up of bushings and othcr similar parts; 

### (r,il) Scalarrt detr (ix) 

## ¡laiatlngparl ing

### thc spray-application

### of spccialty çgatinils, 

### !n a1 41ça i51qnllred 

### in a 

### titlc

## Y pclmit, whcre the pennitting âuthoriq' has dctermincd

### that

## it is impractical 

### or not technically feasible 

### to paintthc parts 

### in a booth.



### or signifìcant modil'ìca¡ion; antì

not cxhaustcd outsidc the buildinq: Comment [411]: The purpose of th¡s proposed language isto allow facil¡tiesto ¡mmediately apply th¡s appl¡cãb¡lity prov¡sion of the regulation upon approval from the locl perm¡tt¡ng author¡ty Ether than hav¡ng to wait untìl the T¡tle V permit reflects the new requirements.

Comment [A12]: The purpose of th¡s proposed language isto allow specialty coating operat¡ons that cannot be performed in a booth,



## 9lPage