R307. E nvironmenta l Q ua lity , Air Quality. R307 -335

. Degreasing and Solvent Cleaning Operations. R307-335-1. 

### Purpose. The purpose of th is 

### rule is 

### to limit vol atile organic compoun d (VOC ) emission from degreasing anJ solvent cleaning operations.
R307-335-2. Applicability. R307 -33 5 applies to all degreasing or so lvent cleanin g opera tions that U ' C V()Cs and that m·e . located ill PM l 0 and PM 2.5 nonaua inmcnt and ma.intenance plan areas as defined 

### in 40 CFR 81.345 (July I, 

### 20 l l ).
R307-335-3. Definitions. The following ad ditional definitions appl y lo R307

- 

### 335:

" Batch open lop vapor degreasing" me.ills the batch 

### proces s of cleaning and removing grea-;e and soils from metal surface s by condensing hot solvent 

### vapor on the co ld er metal parts "ColJ ck anm g" mean s the batch pr oce ss of cleaning (U1d removing s oil s from mdal surfaces by spraying

. bms hing

. flushing or**immer ing**  \\hile maintaining the solvent below**t~** hoiling point. "Co nveyo rizcd degreasing" means the rnntinuou s proce ss of cleanin g and removing greases and soils from metal s urfaces by using either cold or 

### vaporized so lvents. "Freeboard rat io " means the freeboard hei g ht (distance bct\1 ee n ,; olvcnt line and lop of container)dividcd by the: width of th e degreaser. "Industrial solve nt cleaning" means operations perfonncd using a liquid that contain s any 

## voe or combination of 

## voes. which is used lo 

### clean parts, tool s , m , 1 c hinc1 ;. , cquiprncnl t tnd 

### work areas . 

### Cle m1i ng operations include , 

### but**rm:~** not 

### lim it ed lo, sp ray ing, 11 ip in g. llu:;hing. and purging

. "Open 

### top vapor degrt':ao;cr" means 

### the batch proce ss of cleaning and removing soils 

### from meta.I 

### surfaces by c on densin g lo w sol ven t vapor on the colder metal parts. "Separation operation'' means <my process that 

### separates 

### a mixtu re of**compound~** and solvents in to two or more com po nents
. Specific mechanisms include ex traction

. ccmrifogat ion , filtration, and 

### crys talli7.ation

. "Solvent mernl cleaning" means th e process of cleaning soils from metal s urfac es by cold 

### clem1ing, op en top vapor degreasers, or conveyorizcd degreasing.
R307-335-4. Col d Cleaning Facilities. No owner or operator s hall operate a degreasin g or sol\ c n l cleanin g operation unless conditions in R.307-335-4( I ) th rough (7 ) <U"C met. ( l ) A 

### cover shall he installed which shall rem ain closed except during ac tual loading. unloading or handling of parts rn clemicr

. · 11 1e CO\ er shall be des igned so that it can be e asily 

### operatt':d with one hand 

### if: (a) The volatility of the solvent is 

### greater than 2 kPa ( 15 mm Ilg or 0

. 3 ps i) meas ure d at 3 8 degrees C ( 100 degrees F). (b ) · n1e solvent is agit ated. or (c) fb.: solvent is h eated. (2) An internal dra ining rack for cleaned parts shall be installed on wh i ch parts shall be draine d until all d1ipping ceases. If the volatility of the solvent is g reater than 4 .3 kPa (32 mm Hg at 38**degree ~**  (' ( 100 degree s F)), the drainage facility 

### mu st be intcmaL so tha t 

### parts are enclosed under the cover while drai ning. The drain age facility 

### ma) be c: xtcrnal for appl icat io n s where an internal type 

### cannot 

### tit into tht· 

### cleaning sys tem. (3) 

### W<l<;te or 

### used sC1l vent 

### shall be stored in covered cont::iiners. (4) Tanks, containers mid all associated equipment shall be maintained in good operating con dition , and leaks shall 

### be repaired immediately or the degreaser shall 

### be shutdown

. (51 Written pro ced ure s for the operation and maime n ancc of 

### the**dcgrca~ing** or solven t cleaning 

### equipment shall be 

### pennm1ently**po~ied** in an accessible a nd co ns picuous location 

### nc,1r the 

### cq u iprnent. (6) 

### If the solvent volatility is greater than 4

. 3 kPa ( 33 mm Ji g or 0

. 6 

### psi) measured at 38 degrees C (100 

### degrees F ), or if solvent is h e ated above 50 d egre es 

### C ( 120 degre es F), then 

### one of 

### the followi n g control devices shall 

### be used : (a) 

### Frccboard that give-; a freeboard ratio greater than 0.7: 

### (b ) Water cover if the s olvent is 

### insoluble in and heavier than water): or (c) Other s; stem s of equivalent control. such as a rnfrigcrnted ch ille r or carbon adsorption

. (7) If u sed. the solv ent s pray s hall be a so lid fluid s t

ream 

### at a pressure that docs no t cause excessive splashing and trnl) not be 

### a fine , atomi7ed or shower type spray. R307 -33 5-5

. Open Top Vapor Deg rea sers. Owners or operator s of open top vapor degreasers sh all. in addition to me eting the requirement.' of R307-3J5- 4(3 ). (4 ) and (5 1. ( I) Equip the 

### vapor degreaser with 3 cowr that can be opened and closed without disturbing the vap or zone. The cover sha ll be closed except when processing work load s through the degreaser ;

and (2) Install one of the following control devices : (a) Equipment 

### necessary to sus tain : (i) A frccboarJ ratio greater than or equal to 0

. 75, (ii) A powered cover if the degrea>er ope n ing is g reater than l square 

### meter ( l 0.8 squ are feet)

. (b) Refrigerated chiller. (c) Enclosed desi gn (cover or door 

### ope ns only when the dry part is actually entering 

### or ex it ing the degreas er ). ! dl Carbon adsorption sy s tem. wi t h vent ilation greate r than or equal to 15 cubi c meters per minute per sq mu-e 

### meter (50 cubic feet per minute per sq uare foot) of air/vapor area when cover is 

### open and exhausting less than 25 parts per mill.ion of so lv ent averageJ 

### over one complete adsorption 

### cycle: (3) Minimize solvent carryout by: (a) 

### Ra ding paits to all o\v comp lete drainage. (b) Moving part s in and out of the degre aser at less than 3.3 meters per minute ( 11 feet per minutcj,



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### (c) Holding the parb in the vapor zone at 

### least 30 seconds or until condensation cease>. 

### (d) Tipping ou t any pool of 

### solvent on the deaned 

### parts befo re removaI, and (c) Allo\ving the parts to dry 1vithin the dcgreastT 

### fi..,r at least 15 second s or un til**is ihly**  

### dry

. (4) Spray parts only in or below the vapor level. (5 ) Not use ventilation thns near the degrea ser opening. nor provide ex. haust ventilation exceeding '.20 cub ic meters per minute per square meter (65 cubic feet per minute per square fool) in degreaser open area . unless ncces5tuy to meet stak mid 

### fcdcrnl occ up ationa l, health. and sa!Cty 

### requirements

. 

### (6) Not dc;u-ease porous or abso rben t materials. 

### such as cloth. leather, wood or rope: (7) 

### Not allow work loads to occu py more than hal f of the degreaser' s open top area: {8i Ensure that solvent**i~** 

### not visua ll y detectable in water exiting the water separator; (9) 

### In stall safety switches on th e following: (a) Conden ser flow switch and thcnnostat (shuts off sump hcat 

### if condenser 

### coolant is ei th er not 

### circulating or 

### too warm) : an d (b) 

### ')pray switch (>huts off sp ray pump if the vapor level drops excessively.**t~ ,**  

### greater than I 0 

### cm (4 

### inche s)

. ( I 0) 

### Open 

### top vapor degre;L<>crs with an 

### open area ,;mall er than one square meter ( 10

. 8 s quare foet) arc exemp t from R307-335-5(2)(b) 

### and (d). 

### R307-335-6. 

### Co nveyorizcd Degreasers. 

### Owners a nd operators of convey ori zcd degreaser s

, hal l. in addition to meeting the requ irements of R307-335- 4(3). ( · I ) 

### and ( 5) 

### and R30 7 -3 3 5-5(5 ): ( 1) 

### Install one of 

### the fo ll ow ing control devices for 

### con veyorizcd degrease rs with an 

### air/vapor interface equal to or greater than two squ are meter> (2 J

. 5 

### square feet): (a) 

### Refrigerated chille r; or (b ) 

### C<u-bon adsorption**~-ystem.** 

### with ventilation greater thrn1 or equal to 15 

### cub ic mch:rs per minut e per square mder (50 cubic fr· et per minute per sqm u-e foo t) of air/vapor area when downtime c >ver.; are open , and cxriau>ting less than 25 parts per 

### million of > Olvcnt b y 

### volume

. avera ge d o ver a <.:ompktc ad sorption cycle

. (2) 

### equip the clcmicr with equ ipment. such as a drying tunnel or rotat ing (tumbling) hasket. 

### s ullicicnt to prevent cleaned parts from carrying out solvent liquid or vapor. (3) 

### Provide downti me cover s for closing off the entranc e and exit during shut do wn hours. Ensure that downtime cover is placed over entran ce s and ex it s of conveyorizcd degrea;;cr s immediately after the conveyor 

### and cxha u ;1 are 

### shut down and is removed just before th ey are sta rted up . { ' 1) 

### Minimi7c carryout**emi ssion** **~** by 

### racking parts for be s t drainage and mainrnining the vertical co nv eyor s peed at le ss than 3

. 3 rnetns 

### per minute ( 1 1 feet 

### per minute)

. (5) 

### Minimile openings: Entrances and ex its should silho uette work load s 

### so that the averngc clearance (betw een 

### par1s and the edge of the degreaser opening) is either kss th an 10 cm (4 inche s ) or**le~s** 

### than 10% of the wid th of the open ing . (6) In s wll sateiy**witches** 

### on the following : (u) Condenser flow s w.irch 

### and thermostat

- shul<> off sump heat 

### if coolmit is either not circulating or too warT!\ : (b) Spray switch

-**huL~** 

### off spray pump or conveyor if 

### the vapo r lev el drops exces sively. i.e., greater than l 0 cm or (4 

### in..:hc s): and ( C) 

### V apor level control thermostat

-**hut s**  

### off s ump l.:vcl if vapor level 

### rise s too high

. 17) Fnsurc that solvent is no t 1 

### isihly detectable in the wa tt:r exiting th e water separator
. R307-335-7

. Industrial Solvent Cleaning. (I) 

### Exemptions. l11c req uirements ofR307-335-7 

### do not apply to aero space. wood furniture

. shiphui ldin g and repair. Oat wood 

### paneling., large appliance. metal furn iture. paper film and foil. plasti\: pm1s. miscellaneous metal parts coat and light autobo dy 

### and truck assembly co atin gs. flexible packuf!i ng. lithograp h ic and letterpress printing materials and fib erglass hoat manufacturing**material .**  (2) 

### Operators of industrial solvent cleaning. that 

### emit 15 pnund s of VOCs or more per day. befo re contro l$. sha.ll reduce VOC cmi<;Sions from th e u, e , handling. storage , <md dispos al of clem1ing 

### solvent s and shop t<iweb b) 

### implement ing the following work practices : (a) 

### Covering open container> : and (b) 

### Storing used app licator s mid 

### shop 

### towc.l s in closed fire proof co ntainers

. iJ) 

### Owners or operators of industrial solvent cleaning operations sh all 

### l imit 

## voe emissi ons 

## by either : (a) Using cleaning solu tions with vapor pres s ure less than or equal to 

### e i ght millimeters of 

### rncrcur) (mm Hg) 

### at 

### 20dewees C: (b) 

### Using solvents with a VOC co ntent of 0.42 pound s pc:r gallon or less: or (c) Installing mi emission control system designed to have an overall control eflicic:nc y 

### of at least 85%. RJ07-J35-8. Emi ss ion 

### Control Systems

. 

### (I l 

### ·n1c owner or operator of 

### a control dev ict' sh all maintain certification from th <' manufacrnn:r that th e emissi on control sys te m will attai n at**le<L~1** 

### 8 5 % ove rall cflicicn cy**p~rfonnance** 

### and make tbc 

### certification available to the 

### director upon request. (2) 

### Emi s sion control syqems shall be operate d and maint. a.incd .in accordmicc 

### with the m<mufactu rcr recommendation s to maintain at leas( 85% 

### overall eflicienC) 

### pe rfonnanec. The owner or operator shall maint<1in for a minimum of two year.; records oC operating and maintcnm1cc 

### sufficient to 

### demon strate that the equ ipment is bein g opaatcd nnd mainmin ed m accordance with the manufoeturc r recommendation s. R307-335-9. Recordkeeping. 

### The owner or operator 

### shall maintain. fo r a minimum or two year s, records 

### of the solvent 

## voe content applied and the phy:;ical ch<m1cteristi1:s that dt:monstratc 

### compliance with R307-335

. RJ07-335-10. Comp liirnce Sd1edulc.



## E
- 30t , 

### 1) All so\Jrccs withm Salt L ake and Davi s counties sh.i ll he in compliance \ \1th R'rn7-335-3 throug h R:I07-i35-6 and**U07- 3~** **8** 

### upon lht: dTcctivc date. ( 2\ 

### All other 

### :-ou r ccs defined in R307-335

- 2 shall be 111 compliance 

### wi t h all sccii ons 

### of thb 

### ruk: 

### by Sep tem ber 

### 1. 

### 20 13.
KEY: air pollution, deg r easing

. solvent cleaning Da te of Enattmcnt or L a st Substa nt ive Am en d men t: January 

### l. 2013 Noti c(' of C on t inuation: F ebruary I, 2012 Au thor iz in g, and Implemented or I nt e r p ret ed L aw : I 9-2- 

### 104( I ){a)



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