A pril 26 , 20 1 6 Mr. Shawn M. Garvin Regional Administrato r U.S. Enviro n mental Protection Agency , Reg ion III 1650 Arch Street , (Mai l Code: 3RAOO) Phi l adelphia , PA 1 9103-2029 Dear

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Enc losed for you r approval are revi sio n s to the Phi ladelphia County Port ion of the Commonwealth of Pennsy lvania's State Implementation P l an (S I P) pertaining to the Clean Air Act requ irement s for Reasonably Available Control Technology (RACT) for the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). The revi s ion s are be ing s ubmitted to the United States Environmenta l Pr o tecti o n Agency (EPA) by the Pennsy lvania Department of Environmenta l Protection (DEP) on behalf of the C i ty of Ph i ladelphia 's Department of Pub l ic Health, Air Manageme n t Services (Ph i ladelphia AMS). Phi ladelp hi a AMS i s a l oca l air pollut ion contro l program that has been approved by D E P in acco r dance with Secti on 12(b) ofthe Penn sy lvania Air Po ll ut i on Control Act to adm ini s ter and enforce the program, in Ph il ade lp hi a Co unty. On Decemb er 13 , 20 13 , the EPA cond itionally approved P hiladelph i a 's RACT demonstration for t h e 1997 8-hour ozo ne NAAQS as provided in two separate revision s to th e Pe n nsy lvania State Implementation Plan (SIP) s ubmitted to E PA o n September 1 3 , 2006 and June 1 7 , 20 I 0 (78 FR 75902). Th i s approva l was cond itioned upon a commitment by Phi lade lphia AMS to submit add iti o nal S IP revi sio ns to provide source-specific RACT determ ination s for spec i fic major so urce s of volatile organic compounds (VOC) and nitr ogen oxides (NOx) in Phi lade lp h ia . In add i tion , the S l P submitta l must include a certi ficat ion that previously adopted so urce- spec ific RACT contro ls for certain so urces in Phi l ade lph i a that were app r oved by EPA in Penn sy lvan i a's S I P u n der the 1-hour ozone NAAQS (as l isted in 40 CFR 52.2020(d)(1)) continue to adequately represent RACT for t he 1997 8-hour ozone NAAQS. In an effort to sa ti sfy th i s comm itme n t to EPA , the DEP s u bm itted SIP rev is ions to EPA on June 27 , 2014, and February 18 , 2015 , o n beha l f of P h iladelp h ia AMS , to sa t i sfy RACT requireme n t s f o r the 1997 8-hour ozone NAAQS

. The Ju n e 27 , 2014, S I P revision prov ided sou r ce-specific RACT determinations for se ven heaters at Phi l adelp h ia Energy Solutions Refining and Marketing , LLC (P E S). The Februar y 18 , 20 1 5 , s ubmittal incl u ded two RACT SIP revi s i ons including P hi ladelphia 's source-specific RACT determ inations for all major VOC and NOx**~o urces**  ( includin g addit i ona l e mi ss ion s units in PES) and a cert ificat i on t hat pr ev i ously adopted so urce-specific RACT contro l s approved by EPA in Pennsy lva ni a ' s SIP under the 1-hour ozone NAAQS for certa in sources continue to adeq u ate ly repre se n t RACT for the 1997 8- h olll· ozo ne NAAQS

. The Fe bruary 18, 2015 , S I P revis i on a l so included a certification t h at certain sources that were s u bject to RACT for the Iho u r ozo ne NAAQS are n ow m in or sources or s h utdown sources that are n o l onger subject to RACT for the 1 997 8-hou r ozo n e NAAQS. The February 1 8 , 2015 , S IP subm ittal included revi se d RACT Plan App r ova l s for certain faci li ties to be incorporated into t he Phi l ade lp h ia County portio n of the Commonwealth's SIP. *

Rachel Carson State Office Building I P.O

. Box 2063 I Harrisburg, PA 17105 -2 063 717.787.2814 Pnnted on Recycled Paper@ www .dep.pa.gov

### Mr. S ha wn M. Garvin

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- Apri l 26 , 2 016 Philade lphi a AMS rece ntl y s ubmitted to OEP revisio n s to th e Feb ruary 18 , 20 15 , S I P s ubmittal in order to revise de mini m is detem 1i nation s and th e case-by

- case RACT ana lys is for ce rt ain sources. Th e e ncl ose d S IP r ev ision ( Phila de lphi a 1\MS S IP Revi s ion T rack in g N umb er20 1508 1 2) prov id es revi se d technical memoranda , revised and new RACT Plan Approvals for certa in m ajor NOx a nd VOC sou rces pr evio u s ly add r essed in th e F eb ruary 18 , 20 15 , S l P revision (see e ncl osed le tt e r). Thi s s ubmittal a l so inc lu des a m e m orandum provid in g c l arify in g R AC T certifications and de minimis det e rminations for the 1997 ozo ne NAAQS. The revised docume nt s provided in thi s S l Pr ev is ion are inte nded t o s upersede the documentat i o n provided in pr ev i ous RA CT S I P s ubmitta l s . The enc lose d S IP rev is io n addresses the following major NOx and VOC facilities in Philadelphia County: (I) Phil ade lphia En ergy So luti ons R efin in g a nd Marketing , LL C ( Pl ant ID -01501) (excl udin g th e 7 he at e rs prev i o usl y add ressed); (2) H oneywe ll I nternati o na l

- Frankford Plant ( P lant I0-0 1551 ); (3) Sun C hemi cal (P lant ID -02052) ; (4) A lli ed Tub e & Condu it Corporation ( Pl a nt 10- 03363); (5) Cardone Indu s tri es (P lant ID s - 03887,02287); (6) Exelon Generating Co mpan y - Ri c hm o nd S t at ion ( Pl a nt ID -04 90 3); (7) Ve o lia En ergy - Sc hu y lkill S tati on ( Plant 1 0-0494 2); ( 8) K ind e r Morgan (P lant 10 -05003); (9) MIPC LLC- Phil ade lphia Terminal ( Pl ant ID-0 5004); ( I 0) Pl ains Pr oduc t s T e rmin al LLC (Plant 10-050 1 3); ( II ) Univ e r s ity of Penn sy lv an ia ( Plant 1 0

- 0891 2); ( 1 2) Philad e lphi a Pri so n System ( Pl ant 10 -095 19); ( 13) Navy Foundry and Propeller Ce nt er ( Pl ant ID-09702); ( 1 4) Nava l Surface Warfare Ce nter Ca rd erock Di v is i on (P l a nt 10- 09724); a n d ( 15) Veolia-Energy Effici ency ( PA) , LL C ( Plant ID-1 04 59)

. Tab l e I of th e enc l ose d S IP Revi s i o n (Ph il ade lphi a AMS S IP R ev is ion Trackin g Number 20 15081 2) provides a s ummary of the updated documentation. Phil ade l phia AMS prov id ed a publi c comment period f or thi s S l Previsi o n fro m A u g u s t 12, 20 15 , to Sep te mb er 30, 2015. A public hearing was he ld on September 1 7, 20 15. T h e wr itten co mm e nt s and test imon y prov id e d durin g the publi c hearing are addressed in th e S IP r ev isi o n . I cert if y that the public participation require m en t s of 40 C FR § 51.102 we re met for thi s S IP s ubmittal and that Phil adelphi a AMS fo ll owed a ll of t he applicabl e procedural r e quire m ents of the Co mm onwea lth ' s l aws an d co n s tituti on in conducting and comp le tin g the enclosed S IP revi s i o n . A paper copy of eac h do c ument and a co mpact di sc c o ntainin g e l ec tr o ni c cop i es are e nc l osed. I f urth e r certify that the electro ni c fil es are ex act dupli cates of the hard cop ies of th e documents. Thank yo u in advance for th e exped ited proce ss in g of the enclosed S IP rev i s i

on. Pl ease contact Joyce E. Epps , Direc tor of the Bur eau o f A ir Qu a lit y, by e- mail atjeepps @ p a.gov o r by te l epho ne at 7 17.787.9702, if necessary. You may a l so co nta c t Kassa hun Se ll ass ie , Act in g Director, Philade lphi a Air Ma nage m ent Se rvice s, by e-mail at kassahun. se lla ssie@ phil a.gov or by te lephone at 215.6 85 .7584

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J o hn Qui g l ey Secre ta ry Enclosure s