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DEPARTMENT OF ENVIRONMENTAL PROTECTION 

SECRETARY 

July 25, 2014 

Shawn M. Garvin 

Regional Administrator 

U.S. Environmental Protection Agency, Region III 

1650 Arch Street (Mail Code: 3RAOO) 

Philadelphia, PA 19103-2029 

Dear Mr. Garvin: 

In accordance with Section 172 of the Clean Air Act, 42 U.S.C. § 7502, the Department of 

Environmental Protection (DEP) is submitting to EPA for approval a revision to the State 

Implementation Plan (SIP) pertaining to the attainment demonstration for the 2006 fine 

particulate matter (PM2.5) National Ambient Air Quality Standards (NAAQS) for the 

Liberty-Clairton PM2.5 nonattainment area. This SIP revision is a supplement to the attainment 

demonstration for the 2006 PM2.

5 NAAQS for the Liberty-Clairton area that was submitted to 

EPA on June 21,2013. 

The Liberty-Clairton "partial" county PM2.5 nonattainment area includes the City of Clairton and 

the Glassport, Liberty, Lincoln and Port Vue boroughs in Allegheny County. The LibertyClairton PM2.5 nonattainment area was designated by EPA as a separate, local-source impacted 

nonattainment area for the 1997 and 2006 PM2.5 health-based standards in April 2005 and 

November 2009, respectively. 

The SIP submittal includes one hard copy and one disc, consisting of the following documents: 

1) The supplement to the attainment demonstration; 

2) Certification of public participation activities and proof of publication of public hearing 

notices; 

3) Technical appendices (appendices consisting of data files are provided in electronic form 

only); and 

4) The comment and response document. 

I certify that the electronic files are exact duplicates of the hard copies. This SIP revision is 

identified as Revision 75 supplemental for the Allegheny County Health Department's (ACHD) 

internal tracking purposes. 

The ACHD is a local health agency organized under Local Health Administration Law, Act 315 

of August 24, 1951, P.L. 1304, as amended, whose powers and duties include the enforcement of 

laws relating to public health within Allegheny County. The ACHD has an air pollution control 

Rachel Carson State Office Building I P.O. Box 2063 I Harrisburg, PA 17105-2063 

717.787.2814 Printed on Recycled Paper www.depweb.state.pa.us 
Mr. Shawn M. Garvin - 2- July 25, 2014 

program that has been approved by DEP in accordance with Section 12 of the Air Pollution 

Control Act. 

The public comment period for the SIP revision began November 18,2013, and ended 

December 23,2013. A public hearing was held on December 18,2013. Comments were 

addressed in a comment and response document, which is included in this submittal. 

The Commonwealth followed all of the applicable procedural requirements of the State's laws 

and constitution in conducting and completing the adoption/issuance of the SIP revision. 

Thank you for your attention to this matter. Should you have any questions concerning this SIP 

revision, please contact Joyce E. Epps, Director of Air Quality, bye-mail at jeepps@pa.gov or 

by telephone at 717-787-9702. You may also contact Ms. Jayme Graham, Manager, Air Quality 

Program, ACHD, bye-mail atjgraham@achd.net or by telephone at 412.578.8103. 

Sincerely, 

E. Christopher Abruzzo 

Secretary 

Enclosures