Mr. Shawn M. Garvin

Regional AdministratorU.S. Environmental Protection Agency, Region III

1650 Arch Street (Mail Code: 3RAOO)

Philadelphia, PA 19103-2029

Dear Mr. Garvin:

Pursuant to Section 107(d) of the Clean Air Act (CAA), enclosed are the Commonwealth

of Pennsylvania’s designation recommendations pertinent to the 1-hour National Ambient Air

Quality Standard (NAAQS) for nitrogen dioxide (NO 2)promulgated by the U.S. Environmental

Protection Agency (EPA) on January 22, 2010. The final rule, which establishes a 1-hour

standard of 100 parts per billion, was published in the Federal Register on February 9, 2010 (74

Fed. Reg. 6474).

The Commonwealth of Pennsylvania currently has 18 NO2monitors operating statewide.

Using the 2007-2009 data currently available, none of those monitors is showing a design valuethat exceeds the NO2NAAQS. The Department of Environmental Protection (DEP)recommends that the following five areas be designated as attainment: Berks County, Cambria

County, Centre County, Erie County, and York County, based on the 2007-2009 design values;

no additional monitoring sites are required in these counties. In addition, DEP recommends thatthe remaining areas of Pennsylvania be designated as “unclassifiable/attainment.” Please refer to

the enclosed Tables 1 and 2 pertaining to the NO2NAAQS design values (expressed in parts per

billion) and county-by-county recommendations, respectively. The submittal also includes thedocumentation for the requisite certified monitoring data.

We understand that EPA will also provide notice of any modiflcations 10 Pennsyivani&s

recommendations at least 120 days prior to issuing final designations. We look forward to

working with you and your staff during the development of the final designations for the

short-term NO2NAAQS in this Commonwealth.

RECEIVED

JAN 3 2011

Dlv‘so Director (3APQO

iJC Q 2010

PA tt)NIn

An Equal Opportunity Employer www.dep.state.pa.us Printed on Recycled Paper
Johni-langer

Secretary

Enclosures
County Site Name AQS Code 2007-2009

Allegheny (ACHD) Harrison Twp 42-003-1005 48

Allegheny (ACHD) BAPC 42-003-0008 54

Beaver Beaver Falls 42-007-0014 43

Berks Reading Airport 42-011-0011 37*

Bucks Bristol 42-017-0012 44

Cambria Johnstown 42-021-0011 42

Centre State College 42-027-0100 35*

Dauphin Harrisburg 42-043-0401 45

Delaware Chester 42-045-0002 51

Erie Erie 42-049-0003 45

Lackawanna Scranton 42-069-2006 46

Lancaster Lancaster 42-071-0007 40

Northampton Freemansburg 42-095-0025 42

Perry Perry County 42-099-0301 22

Philadelphia (AMS) Lab 42-101-0004 58Philadelphia (AMS) Broad 42-101-0047 58

Washington Charleroi 42-125-0005 40

York York 42-133-0008 50

* incomplete data
Counties (ppb) new monitor Designation

Adams County N / A Unclassifiable/ Attainment

Allegheny County 51 Pittsburgh MSA Unclassifiable/Attainment

Armstrong County N/A Pittsburgh MSA Unclassifiable/Attainment

Beaver County 43 Pittsburgh MSA Unclassifiable/Attainment

Bedford County N! A Unclassifiable/Attainment

Berks County 37* Attainment

Blair County N / A Unclàssifiable/Attainment

Bradford County N/ A Unclassifiable/Attainment

Bucks County 44 Philadelphia MSA Unclassifiable/Attainment

Butler County N/A Pittsburgh MSA Unclassifiable/Attainment

Cambria County 42 Attainment

Cameron County f%1/ A Unclassifiable/Attainment

Carbon County N/ A Allentown MSA Unclassifiable/Attainment

Centre County 35 Attainment

Chester County N/A Philadelphia MSA Unclassifiable/Attainment

Clarion County N/ A Unclassifiable/Attainment

Clearfield County N/A Unclassifiable/Attainment

Clinton County N/ A Unclassifiable/Attainment

Columbia County N/ A Unclassifiable/Attainment

Crawford County N/A Unclassifiable/Attainment

Cumberland County N/ A Harrisburg MSA Unclassifiable/Attainment

Dphin County 45 Harrisburg MSA Unclassifiable/Attainment

Delaware County 51 Philadelphia MSA Unclassifiable/Attainment

Elk County N / A Unclassifiable/ Attainment

Erie County 45 Attainment

Fayette County i”/ A Pittsburgh MSA Unclassifiable/Attainment

Forest County N!A Unclassffiable/Attainment

Franklin County N A Unclassifiable/Attainment

Fulton County N/A Unclassifiable/Attainment

Greene County N/ A Unclassifiable/Attainment

Huntingdon County N / A Unclassifiable/Attainment

Indiana County N,’ A Unclassifiable/Attainment

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Lancaster County 40 Lancaster MSA Unclassifiable/Attainment

Lawrence County N/ A Unclassifiable/Attainment

Lebanon County N1 A Unclassifiable/Attainment

Lehigh County N A Allentown MSA Unclassifiable/Attainment

Luzerne County N A Scranton MSA Unclassifiable/Attainment

Lycoming County N/A Unclassifiable/Attainment

McKean County N/ A Unclassifiable/Attainment

Mercer County N,’ A Unclassifiable/Attainment

Mifflin County N/ A Unclassifiable/Attainment

Monroe County N/A Unclassifiable/Attainment

Montgomery County N/A Philadelphia MBA Unclassifiable/Attainment

Montour County N/ A Unclassifiable/Attainment

Northampton County 42 Allentown MSA Unclassifiable/Attainment

Northumberland County N / A Unclassifiable/Attainment

Perry County 22 Harrisburg MSA Unclassifiable/Attainment

Philadelphia County 58 Philadelphia MSA Unclassifiable/Attainment

Pike County N ‘A Unclassifiable/Attainment

Potter County N A Unclassifiable/Attainment

Schuylkill County N/ A Unclassifiable/Attainment

Snyder County N/ A Unclassifiable/Attainment

Somerset County N,’ A Unclassifiable/Attainment

Sullivan County N/’ A Unclassifiable/Attainment

Susquehanna County A Unclassifiable/Attainment

Tioga County N/A Unclassifiable/Attainment

Union County N! A Unclassifiable/Attainment

Venango County N/ A Unclassifiable/Attainment

Warren County N/ A Unclassifiable/Attainment

Washington County 40 Pittsburgh MSA Unclassifiable/Attainment

Wayne County N/ A Unclassifiable/Attainment

Westmoreland County N/ A Pittsburgh MBA Unclassifiable/Attainment

Wyoming County N/A Scranton MBA Unclassifiable/Attainment

York County 50 Attainment

* incomplete data

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