# South Coast Air Quality Management D istrict 21865 Copley Drive , Diamond Bar , CA 91 765-4178 (909) 396-2000 · www.aqmd.gov

A ndrew Stec k e l , Rulemakin g O ffic e Chief U nite d S t at es E n v iro nmenta l Pro t e ction A ge ncy R eg i o n IX 7 5 H a wth o rn e S tree t San Fr a n c i sco, 

### CA 9 4 10 5-3 901 

### Re: Ongoing NOx rule d e velopment emissions redu ctions (forgoll e ) issues: M ay 2 0 ,2 015



### Rule 1111 : Redu c tions of NOx Emissions from Natural Gas -Fired, Fan-Type Central Furna ces ( A mended S e ptember 5 , 2014); Rule 1110.2: Emissions from Gaseous and Liquid Fueled Engines (Amended Septemb er 7 , 

### 2012); Rule 1153.1: Emiss ions of Oxid es of Nitrogenfrom Comm e rcial Food O ve n s ( A dopted November 7, 

### 2014); Rule 219: Equipment Not Requiring a Written Permit Pursuant to Regulation II ( A mended May 3, 2 013); Rule 222: Equipment Requirements for Spe c ific Emission Sources Not R equiring a Written Pe rmit Pursuant to Regulation II ( A m e nded May 3, 2013); and Rule 114 7 : NOx R e ductions from Miscellaneous Sourc es ( A mended September 9, 2011) SCAQ MD s taff is p ro vidin g a res pons e t o yo ur c omm e nt s b ase d on yo ur revi e w of Rules 2 1 9/222, 1110 .2, 1111 , 1147 a nd 1153.1. O ver th e p as t three ye a r s, s t af f ha s bro ug ht rul e a m e ndment s a nd ne w rul es to th e Go v e rnin g Bo a rd to a ddress o n go in g impl e m e ntati o n i ss u es due t o tec hn o logy fo rc in g e mi ss i o n s limit s. Rul e de ve lo pm e nt ha s a ddresse d th e feas ibilit y iss u es by d e lay in g co mpli a n ce dates, spec ify in g e quipm e nt rul e exe mpti o ns a nd re lax in g e mi ss io n s limi ts . As a co n se qu e n ce, se lected SIP e mi ss io n redu c ti o n s from rul e impl e mentati o n h a ve b ee n fo rg one or de l a y e d . The ra n ge of th e e mi ss io n re du c ti o n s fo rgo n e v a ries eac h y ear from 2 015 tlu ·o u g h 2 020 d e pe nd e nt upon rul e impl e m e ntat io n sc he dul e a nd co mpli a n ce o p t io n s se lec te d by th e af fec t e d so urces. T h e a nnu a l m ag ni t ud e of th e e mi ss io n re du c t io n s fo rgo ne is s umm a riz e d in T a bl e 1 fo r e a c h of th e s ix ye a r s c ulmin a tin g in a 0 .15 T PD to ta l in 2 0 2 0 a nd be y ond . Th e 2 00 7 and 2 01 2 Air Q u a lity Man age m e nt Plan s ( AQ MP) b o th re cog niz e d e mi SS io n re ducti o n s fo rego n e du e to in a bility to a tt a in techn o logy fo rcin g e mi ss i o n s limit s co nt a in e d in a d o pte d rul es as a p o te nti a l iss ue th at c o uld je o p a rdiz e futur e NAAQS a tt a inm e nt. To acco unt fo r pote ntial e mi ss io n re du c ti o n s h o rtfa ll s du e to t ec h no l ogy assess m e nt s, th e E PA
- approv ed 2 007 SIP h as a se t a s id e of 2. 0 TPD NOx in th e co ntro lled inv e nt o rie s for b o th 2014 and 20 23 (page III-2- 34 in App e ndi x III) a nd th e 2 01 2 AQ MP has a se t - a s id e o f 1 T PD N Ox e mi ss ion r e ducti o ns fo r 201 4 and 2 TPD fo r 2 0 23 in the co ntro ll e d inv e nt o ri es (page III- 2
- 59 in A pp e ndix III ). Th e set as id e e mi ss ion s a re includ e d in the co n tro ll e d re m a inin g e mi ss io n in ve nto ri es u se d in the att a inm e nt dem o n stra ti o n to d e te rmin e p o llut a ntNOx Rule Development Page 2 carrying capacities. (See the AQMP Final Controlled Emissions Projection Algorithm (CEPA) Source Emission Reductions Summaries provided in Appendix V Modeling Attainment Demonstrations: Attachments 7 for the 2007 plan and Attachments 2 and 3 for the 2012 plan) . With submission of the certified 2013 ambient PM 25 data to EPA AQS , the Basin demonstrates compliance with the 1997 annual average PM 25 standard. On December 9 , 2014, U.S. EPA published in the Federal Register its proposal to determine that the Basin had attained the 1997 annual and 24-hour PM 2.5 standards. In its January 2015 Draft Supplement to the 24-Hour PM2.5 State Implementation Plan for the South Coast Air Basin , the SCAQMD updated its attainment demonstration for the 2006 NAAQS

to reflect a 2015 attainment date with respect to the recent requirements under Subpart 4 , of the CAA. Currently only one site in the Basin , Mira Loma, exceeds the 24-hour PM 25 standard with a 2013 design value of 36.6**~tg/m 3**  or 4% greater than the standard. As s hown in Table I , implementation ofRules 219/222, 1110.2, 1111 , 1147 and 1153.1 will result in 0 .2 1 TPD of NOx emission reductions foregone in 2015. The amendments to Rule 1147 will del ay compliance in 2015 and 2016, but will increase compliance in 2017 and 2018 to offset the net impact of the delay. (Emissions reductions from Rule 1147 will increase to 0.12 TPD NOx in each of 2017 and 20 18). In addition, the projected emissions foregone from Rule 114 7 compliance delays due to implementation of the mitigation fee option are expected to be offset by sales of electric leaf blowers through SCAQMD's Leaf Blower Exchange Program . Amendments to Rule 1110.2 contribute 0.03 TPD emissions reductions foregone due to the exemption of two remotely located IC engines. Amendments of Rules 2 19 / 222 and adoption of Rule 1153.1 both extracted selected categories of equipment from Rule 1147 jurisdiction and account for 0.04 and 0.06 TPD NOx emissions reductions foregone , respectively. Amended Rule 1111 delayed the initial 2014 compliance implementation date to April 2015 thus contributing 0.02 TPD foregone emissions reductions for each following year. Like the alternate compliance plan option described for Rule 1147, Rule 1111 compliance delay s for the implementation of the mitigation fee option are expected to be offset by sales of electric leaf blowers through the SCAQMD Leaf Blower Exchange Program.

The foregone emission reductions do not impact the modeled 2015 attainment demonstration for the 2006 24-hour PM 2 _ 5 s tandard because they were accounted for through the 1 TPD NOx set aside in the 2014 controlled inventory. Note: the 2015 24-hour PM2.5 attainment demonstration has been interpolated from the 2014 and 2019 modeling simulations. Both simulations had the 1 TPD NOx set aside included in the modeling attainment inventory. Daily forecasted restrictions on agricultural and residential wood burning are projected to bring the Basin into compliance with the 2006 PM 2 . 5 standard by December 31,

2015. The attainment demonstrations for the revoked !-hour and 1997 8-hour ozone standards are targeted for 2023 and 2024 respectively. Delays in NOx emissions reductions due to implementation of alternate compliance plans or modifications to compliance schedules beyond 2020 do not impact the attainment demonstration s. The 1 TPD and 2 TPD NOx set-aside emissions in the 2014 and 2023 controlled inventories are sufficient to account for the nominal loss of emissions (0.13 TPD) due to the amendments of Rules 219/222 and Rule 1110.2 and adoption of Rule 1153.1 whicb extracted selected categories of equipment from Rule 1147 jurisdiction. The staf f reports for Rules 219/222, 1111, 1110 . 2, 1147 and 1153.1 summarize the changes to rule language that r es ult in the foregone emission reductions. Responses to comments for Rules 1111 and 1153 . 1 provided in the staff reports specifically cite the use of the set aside emissions to replace foregone emission reductions. The four key staffrepOiis are posted on the SCAQMD website at:N Ox Ru l e D eve l opment Page 3 Rul es 2 1 9 / 222: h tt p :// www.aqm d.gov/ d ocs / d efaul t- so urce/Age nd as / Gove rnin g-Boa rd / 2 0 1 3 / 2 01 3- m ay 3 -0 2 8. pd f?sfv rs n = O Rul e 1111 : htt p:/ / ww w . aqmd. g ov/ d o c s/defaul t - so urce/ Age nda s/Go v e rnin g - Board/2 0 14/2 0 14-sep5- 0 3 2 . pdf? sfv rs n =2 Rule Ill 0 . 2: http ://www.aqmd. gov/ d ocs / d efa ult- so urce/Age nd as/Gove rnin g - Boa rd / 2 0 I 0/2 0 l O
- jul 9
- 0 3 8. pd f?sfvrs n =2 Rul e 114 7: http ://www . aqmd .gov/ d ocs / d efa ult -so urce/Age nd as / Gove rnin g - Board/ 2 0 1 112 0 11- se p 9- 034. pdf? sfv r s n =2 R ul e 11 53 . l: http: //www . aqm d . go v/ d ocs/defa ult- so urce/ Age nd as/Gove rnin g-Board / 2 0 1 4/2 01 4- nov7
- 024 . 

### pd f?sfvrs n =O Staff b e li eves th at th e d i sc u ss io n provi d e d a b ove sat isf ies yo ur co n ce rn s to th e SIP acce ptab i lity of the amend me nt s to Rul es 11 1 1, 11 47 a nd 1 1 10 .2 w hi c h e ith e r exe mpted e quip ment o r d e laye d rul e impl e me nt ati o n , and th e a m e ndm e nt o f Rul es 2 1 9/ 222 a nd a d o pti o n of Rul e 11 53 . 1 w h ic h res ulte d in e mi ss io n s fo rego ne fro m Rul e 11 4 7 th e re by m ee tin g th e re quire me nt s of CAA sec ti o n 11 0 (1 ). S taff a lso be lieves th at th e e mi ss io n s re du c ti o n fo rgo n e fr o m th e afo re m e nti o ne d rul e ac ti o n s are cove re d by t he 20 0 7 a nd 2 01 2 SIP e mi ss io n s se t as id es a nd will n o t a dv e rse ly imp ac t th e ex p e diti o u s att a inm e nt of th e NAAQS. W e w ill co n t inu e to tr ac k e mi ss io n s imp ac t s res ultin g fi ·om vari o u s tec hn o logy assess me nt s assoc iate d with future rul e limi ts t o e n s ure th at o ur S IP co mmitm e nt i s m et . If yo u h ave a ny qu es ti o n s o r need flllih e r inf o rm a ti o n pl ea s e c ontact J o s e ph Cass m ass i , th e Planning and Rul es Directo r res p o n s ibl e fo r th e Rul e 1111 a m e n d m e n ts at (9 09 ) 3 9 6-315 5 o r b y e -m a il a t jc a s sm ass i @ aq md .gov.
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**~** Ph i lip F in e , Ph.D . De p uty Exec uti ve Office r P lannin g , Rul e Deve lo pm e nt , & A r ea So urces C c : icole Law , U.S. EPA Region IX Ida l ia P e rez, U.S. EPA R eg io n IXT able 1.

NO x Rul e D ev el o pm e nt P a g e 4 NOx Emissions Reductions Forgone (TPD) Due to Delays in Compliance Dates, Exemptions and Relaxing Emissions Limits Rule 2015 2016 2017 2018 2019 2020 11 10 .2 0.03 0 . 03 0.03 0 . 0 3 0 . 03 0 . 0 3 1111 * 0 . 02 0.02 0.02 0.02 0.02 0.02 11 4 7* 0.06 0 . 06 -- -- -- -- From 1147 to: 222 /2 19 0 . 04 0 . 04 0.04 0.04 0.04 0.04 1153 .l 0.06 0.06 0.06 0.06 0.06 0.06 Total 0.21 0.21 0.15 0.15 0.15 0.15 *E missions foregone from compliance delays due to the Rule 114 7 and Rul e 1111 miti ga ti o n fee option were project e d to be offset by sal e s of electric leaf blowers throu g h the S C AQMD Leaf

Blow e r Exchange Program .