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### .efu W.ers.eu DEPARTMENT of ENVIRONMENTAL PROTECTION Division of Air Quality BOB MARTIN Governor Commissioner MAILCODE: 40 I

- 02 KIM GUADAGNO Lt. Governor 401 E. State Street, 2nd floor , P.O. Box 420 Trenton, NJ 08625-0420

Air Management Services 321 University A venue 2"d floor Philadelphia, PA 19104 Attn: Karen Smit h July 24, 2014

RE: Proposed Revision to the St ate Implementation Plan to Meet the Requirements of Reasonably Available Contro l Technology Set Forth by the Clean Air Act under the 8 -H our OzoneNAAQS Dear Ms. Smith: Thank you for the opportunity to comment on the City of Philadelphia Department of Health Air Management Services (AMS) proposed Reasonably Available Control Technology (RACT) SIP revision for Philadelphia County (June 28 , 2014 

### Proposed Revision to the State Implementation Plan to Meet the Requirements of Reasonably Available Control Technology Set Forth by the Clean Air Act under the 8-How- Ozone NAAQS). The State of New Jersey's air quality is directly impacted by transport of emissions of oxides of nitrogen (NOx) from Philadelphia County. The New J ersey Department of Environmenta l Protection (New Jersey) urges AMS to reconsider the proposed NOx RACT limits and adopt limits that are at lea st equivalent to tho se adopted by New J ersey five years ago (2009), and approved by the United States Environmental Protection Age ncy in 2010. The C lean Air Act requires implementation of current RACT for the 75 ppb ozone health standard. New Jersey's RACT limits for electric generating units are rea sona ble performance standards that are necessary to attain and maintain the ozone NAAQS throughout the region, especially on high el ectric demand days (HEDD) which occur on hot summer days. New Jersey 's NOx RACT limits for No. 6 fue l oil-fired boilers and No. 2 fuel oil-fired simple cycle turbines used to generate e lectricity are subs tanti ally lo wer than the AMS corresponding proposed so urce- speci fic emission limits (see Enclos ure 1). Also, the proposed annual NOx limit s do not address daily NOx emi ssions, which is needed to address ozone, especially on high e lectric demand days. AMS' source-s pecific RACT limit s s hou l d include lo wer NOx emission standards that app l y on a daily basis , or s horier time period. Specifically, New Jer sey's NOx RACT l imits should be considered for the No. 6 oi l -fired boilers at Veolia- Ed i so n Station, Veol i a - Schuylki ll Station;and the No. 2 oil

- fired simp le -cycle turb ines at Exelon

- Richm ond Station, Exelon

- Delaware Station, an d Exelon

- Schuylkill Sta ti o n. Implementing up-to
- date daily RACT l imits in Philadelphia County wou ld contribute to impro ved air qu ality in Philadelphia and its downwind n eig hbor s. Thank you for co nsi d e ration of these comments. If yo u have any ques ti ons regarding New Jer sey's RACT ru les, please contact Marga ret Gardner at (609) 292

-7095
.

irector Di vis ion of Air Quality Enclosure ( 1 )
c: Th omas Hu y nh , Director of AMS Diana Esher, Dir ector, Air Prot ection Divis ion , USEPA Region III Jo yce E
. Epp s, Director, Burea u of Air Qua l ity , PADEP Jan e Herndon , Ass istant Commi ss ioner, N JDEP , Enviro nm ental Management Chris Salmi , Ass i stant Dir ector , NJDEP, Air Quality Planning Fran cis Ste itz, Assistant Director, NJDEP, Air Quality Perm itting Program Margaret Gardner, Environme ntal Eng ineer 3, N JD E P , Air Quality Permitting Program

### Comparison of NJ NOx RACT Emission Limits and AMS Proposed Source-Specific NOx RACT Emission Limits for Existing Units that Generate Electricity

A. No.6 Fuel Oil-Fired Boilers 1. 

### NJ Limit- 0.20 lb/MMBtu 1 ' 2 

### (daily limit during ozone season) 2. Veolia- Edison Station, PA, four boilers Philly Limit

- 0.50 lb!MMBtu each 3. Veolia- Schuylkill Station, two boilers Philly Limits

- 0.35 lb/MMBtu and 0.36 lb/MMBtu, respectively B. No.2 Fuel Oil-Fired Simple Cycle Combustion Turbines
1. 

### NJ Limit- 0.16 lb/MMBtu 1 • 3 

### 2. Exelon- Richmond Station, two turbines Philly Limit

- 0. 7 lb!MMBtu
3. Exelon- Delaware Station, four turbines Philly limit- None 4. Exelon- Schuylkill Station, two turbines Philly limit- None

1 On an d a f t e r M ay 1 , 201 5 2 Co nv e r si o n fr o m 2. 0 0 lb/ MWh 3 C on ve r si o n fr om 1. 60 lb/ MWh