RJ07. Environmental Quality, Air Quality. R307-3 I 2. Aggrcgatr Processing Operations for PM2.5 Nonattainment Areas

. R307-312-J. Purpose

. RJ07-3 I2 eq abli sh es emission standards for source;, in the aggreg a te processing industry, incl udm g aggregate processin g cquipmenL hot mix**:L~phalt** plants, and concre r. c batch pl a nts
. RJ07-312-2. Applicability. ( l) R307-3 I 2 applie s to all crushers. screens , conwyors , hot mix a:sphalt 

### plants. and concrete batch 

### plants located within .i Plvl2.5 nonattaimncnt and maintenance area us de fined in 40 CTR 81.345 (July l. 2011) and geographically described as all region s of Salt Lake and Davis**coumie~ :**  all portions of th.: Cm:he Valley : all r<:g ions in Weber and l J t.1h countie s west of' the \V as at ch mountuin range ; in Box El der Co unty. from th e Was atc h mountain range west to the Promontory mountain range and south of Portage; and in Tooele County , from the northernmo st pai1 of the Oqu.irrh mountain range to th e northern most part of the Sti ui sbury mountain range and no rth of Route 199

. (2) T11c provisions of R307-3 I 2 do not apply to temporary bot mix asphalt plants

. R307-312-3.**Definition~.** The following defi nitions apply to R307-3 l 2: "Aggregate" means m aterial 

### of which the majority 

### is nomncta llie mineral s. "Concrete batch plant" means a ny facility used to manufacture con cr dc hy mixi ng aggregate with cem ent. "Conveyor" means 

### a device 

### !Or**lrnn~porting** nonmetall ic materi als from one piece of equipment to unother '"C rusher"' mean s a machine used to crush any nonmeta llic mim: rnl s. "Hot mix asphalt plant'' means any facility used to manufacture bot mix as pha l t by heatmg and dryin g aggregate and mixing with asphalt cement>
. "N onmetalli c mineral" has the same definition 

### as defined i n 4 0 Cf'R 60

. 671.

"S creen " means a devic e for s.:paratin g nonmetallic mincr:ils accord ing to size by passing undersiz e materia l through o ne or more rnesh surla\:es in series. and retain ing ovcrsi :re material on th e m.::sh sur!ilccs. "Temporary" means not more t h an i 80 operating day s and not more than 365 calen d ar 

### diiy s. R307-312- 4. Visible E missions. (I) Visible emissio ns from**:;ource~** su b j.:c l to RJ07- 3 l 2 shall not exceed the opa ci ty limits as specifie d in Tabl e I

.

CA 1CORY ( 1""JS re r> Scre e•1s Coriv -ey or**trar,sf~r** po1nts C o11crete ba tch pla n ts T A8L[ 1

(2) Opacity Ob'icrvation

. O PAC! ' Y UH!! 12>. /% 7 % (a) Opaci ty ubservalions of em1sswns shall he c · onductcd according to 

### 40 CFR 60, Appendix A, Method 

### 9. (b) 111e duration of th e Method 9 obs ervation s shall be 30 minutes (five six-mi nute averages)

. (cl Compl ian ce shall be based on the average of th e live six-minute average s. The duration of Method 9 may be red uc ed to 6 minute s (one six-minute average) if th e first s ixminute average is below the limit specified in · 1 abk I

. R307-312-S. 

### Hot Mix Asphalt Plants. (I) 'Ilic filterable P\· 12 .5 em is sion rate from a hot mix 

### asphalt plant dryer shall not exceed 0

.024 grains per 

### dscf. (a) Fillcmble PM2.5 emi ssio ns shall be detennined 

### by 40 CFR 5 1, Appendix M, Method 20 1A. (2) From November I lo March I , a hot mix asphalt plant burning a fuel other than natural gas or liquefied petroleum ga s (LPG) shall not produce more than 50'Vo of its rated capac ity. (a) Production sh all be detennined 

### by scale house reco rd s or equivalent method on a dail y basi s. (b) Compliance sha ll be based on either the 

### daily amo unt of hot mix asphalt produced averaged over th e operating day or the daily amount of hot mix asphalt produced while bu rnin g 

### a fuel other than natural 

### gas or LPG averaged over the time the plant is operating while burning a f uel other than natural**ga~** or LPG each day

. (c) Compliance shall be determined by production**r~cords** 

### and fuel records

. R307-312-6. Compliance Schedule. (l) All so urc es su bje ct to R307 -3 12-4 or R307-312- 5(2' l shall be 

### in compliance with this rule b y June? , 2013

. (2) All sources su bject to RJ07-3 l 2-5(1) that begin C'onstru ct ion prior to .lune 

### ?. 2013. shall suhmit test result s demon,1rati ng compliance with R307-312-5(1) to the director**b~ '**  December 14 , 2015

. (3) All sou rce s s ubj ect to R307-3t2-5(1) that begin const rnction 

### on or af ter June 7

. 2013 , shall submit test results demonstrati ng compliance with R307-312-5(1) to the director no later than 180 days after initial sta11up

. 

### KEY: air pollution, aggregate, asphalt, concrete Date of Enactment or Last Substantive Amendment: February I, 2013 Authorizing, and lmplcmcntcd or Interpreted Law: 19-2- 10 1: 19-2-104; 19-2-109



## E
- 26 Conditionally approved