UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

REGION III

1650 Arch Street

Philadelphia, Pennsylvania  19103-2029

									October 2, 2008

SUBJECT:	Supplement to Technical Support Document – Pennsylvania;
Redesignation to Attainment of the Pittsburgh-Beaver-Valley,
Pennsylvania 8-Hour Ozone Nonattainment Area and Approval of the
Area’s Maintenance Plan and 2002 Base-Year Inventory

                           /s/

FROM:	Christopher Cripps  

		Air Quality Planning Branch

TO:		File

Throughout this document whenever the words “we,” “us,” or
“our” are used, I mean the Environmental Protection Agency (EPA).

I.  Background

On April 26, 2007, the Pennsylvania Department of Environmental
Protection (PADEP) formally submitted on behalf of the Commonwealth of
Pennsylvania a request to redesignate the Pittsburgh-Beaver Valley,
Pennsylvania ozone nonattainment area (the Pittsburgh Area) to
attainment of the 0.08 parts per million (ppm) 8-hour ozone national
ambient air quality standards (NAAQS) of 40 CFR 50.10.  Also, on April
26, 2007, Pennsylvania submitted a maintenance plan and a 2002 base-year
inventory for the Pittsburgh Area, as State Implementation Plan (SIP)
revisions.  

On July 11, 2007 (72 FR 37683), EPA published a notice of proposed
rulemaking (NPR) for the Commonwealth of Pennsylvania (the July 11, 2007
NPR).  The July 11, 2007 NPR proposed approval of Pennsylvania’s April
26, 2007, request that the Pittsburgh Area be redesignated as
attainment.  The July 11, 2007 NPR proposed approval the maintenance
plan for the Pittsburgh Area along with the motor vehicle emission
budgets (MVEBs) contained therein and the 2002 base year inventory SIP
revisions which were submitted on April 26, 2007.

On May 29, 2008, the PADEP submitted a letter to formally withdraw the
redesignation request and the maintenance plan SIP revision.  On August
1, 2008, PADEP affirmed that the Commonwealth was not withdrawing the
2002 base year emissions inventory SIP revision submitted on April 26,
2007, and submitted an amended SIP revision document which struck-out
the maintenance plan portions leaving only the 2002 base year emissions
inventory.  The Commonwealth of Pennsylvania has withdrawn the
redesignation request and the maintenance plan SIP revision from our
consideration.  

As discussed in the July 11, 2007 NPR, we proposed to approve the 2002
base year emissions inventory for the Pittsburgh Area to fulfill the
inventory requirement(s), as necessary, of both section 182(a)(1) and
section 172(c)(3) of the Clean Air Act.  See 72 FR 37863 at 37688, July
11, 2007.

Because the Commonwealth of Pennsylvania has withdrawn the redesignation
request and the maintenance plan SIP revision from our consideration, we
cannot issue a final action on these two submittals.  We must issue a
final action on the SIP revision consisting of a 2002 base-year
inventory for the Pittsburgh Area.

II. Changes to the Docket:

The following two documents prepared to support the proposed actions on
the redesignation request and maintenance plan SIP revision are not
relevant to the final action on the SIP revision consisting of a 2002
base-year inventory for the Pittsburgh Area:  “Technical Support
Document – Pennsylvania; Redesignation to Attainment of the
Pittsburgh-Beaver-Valley, Pennsylvania 8-Hour Ozone Nonattainment Area
and Approval of the Area’s Maintenance Plan and 2002 Base-Year
Inventory,” dated June 21, 2006 (June 21, 2007 TSD), and, “  SEQ
CHAPTER \h \r 1 Technical Support Document - Findings for Motor Vehicle
Emission Budgets; 2009 and 2018 Motor Vehicle Emissions Budgets in the
Maintenance Plan for the Pittsburgh-Beaver Valley, Pennsylvania 8-Hour
Ozone Nonattainment Area,” dated May 17, 2007 (May 17, 2007 TSD).  

Likewise the following Redesignation and Conformity Guidance Memos and
Documents cited by the May 17, 2007 and the June 21, 2007 TSDs are no
longer relevant to this action:

•		“Ozone and Carbon Monoxide Design Value Calculations,”
Memorandum from Bill 	

		Laxton, June 18, 1990.

•			“Maintenance Plans for Redesignation of Ozone and Carbon
Monoxide Nonattainment Areas,” Memorandum from G.T. Helms, Chief,
Ozone/Carbon Monoxide Programs Branch, April 30, 1992.

•			“Contingency Measures for Ozone and Carbon Monoxide (CO)
Redesignations,” Memorandum from G.T. Helms, Chief, Ozone/Carbon
Monoxide Programs Branch, June 1, 1992;

•			“Procedures for Processing Requests to Redesignate Areas to
Attainment,” Memorandum from John Calcagni, Director, Air Quality
Management Division, September 4, 1992.

•			“State Implementation Plan (SIP) Actions Submitted in Response
to Clean Air Act (CAA) Deadlines,” Memorandum from John Calcagni
Director, Air Quality Management Division, October 28, 1992.

•			“Technical Support Documents (TSD’s) for Redesignation Ozone
and Carbon Monoxide (CO) Nonattainment Areas,” Memorandum from G.T.
Helms, Chief, Ozone/Carbon Monoxide Programs Branch, August 17, 1993.

•			“State Implementation Plan (SIP) Requirements for Areas
Submitting Requests for Redesignation to Attainment of the Ozone and
Carbon Monoxide (CO) National Ambient Air Quality Standards (NAAQS) On
or After November 15, 1992,” Memorandum from Michael H. Shapiro,
Acting Assistant Administrator for Air and Radiation, September 17,
1993.

•			Memorandum from D. Kent Berry, Acting Director, Air Quality
Management Division, to Air Division Directors, Regions 1-10, “Use of
Actual Emissions in Maintenance Demonstrations for Ozone and CO
Nonattainment Areas,” dated November 30, 1993.

•			“Part D New Source Review (Part D NSR) Requirements for Areas
Requesting Redesignation to Attainment,” Memorandum from Mary D.
Nichols, Assistant Administrator for Air and Radiation, October 14,
1994.

•			“Reasonable Further Progress, Attainment Demonstration, and
Related Requirements for Ozone Nonattainment Areas Meeting the Ozone
National Ambient Air Quality Standard,” Memorandum from John S. Seitz,
Director, Office of Air Quality Planning and Standards, May 10, 1995.

•			“Conformity Guidance on Implementation of March 2, 1999,
Conformity Court Decision,” Memorandum from Gay MacGregor, Director,
Regional and State Programs Division, May 14, 1999.

•	“Policy Guidance on the Use of Mobile6 for SIP Development and
Transportation Conformity,” Memorandum from John Seitz, Director,
Office of Air Quality Planning and Standards, and Margo Oge, Director,
Office of Transportation and Air Quality, January 18, 2002.

•	“Clarification of Policy Guidance for MOBILE6 SIPs in Mid-course
Review Areas,” Memorandum from G.T. Helms, Chief, Office of Air
Quality Planning and Standards,  and Leila Cook, Office of
Transportation and Air Quality, February 12, 2003.

•	“Guidance for Determining the “Attainment Years” for
Transportation Conformity in New 8-Hour Ozone and PM2.5 Nonattainment
Areas,” Memorandum from Suzanne Rudzinski, Director, Office of
Transportation and Air Quality, March 8, 2005.

•	“Complete Transportation Conformity Regulations that Incorporate
Recent Conformity Final Rule Amendments (through May 2005)” Reference
Document, May, 2005.

These documents will remain in the docket but will be segregated into a
separate file in the docket entitled, “Volume IV, Documents Related to
the Notice of Proposed Rulemaking but No Longer Support or Are Not
Subject to the Final Rule for Docket EPA-R03-OAR-2007-0453.”  

In addition the State’s original redesignation request and original
SIP documents will remain in the docket for record keeping and retention
purposes, but will be segregated into Volume IV “Documents Related to
the Notice of Proposed Rulemaking but No Longer Support or Are Not
Subject to the Final Rule for Docket EPA-R03-OAR-2007-0453.”  

III. Emission Inventory TSD:

The separate Technical Support Document (TSD) prepared for the proposed
rulemaking contained a detailed evaluation of Pennsylvania’s 2002
base-year inventory for the Pittsburgh Area and concluded that this
inventory can be approved.  See “Technical Support Document (TSD) For
Emissions Inventories for the Pittsburgh – Beaver Valley Pennsylvania
8 Hour Ozone Redesignation Request, Maintenance Plan, and, State
Implementation Plan (SIP) Base Year Inventory,” dated May 30, 2007. 
This document remains part of the active rulemaking docket.

    On March 27, 2008 (73 FR 16436), EPA revised the level of the
primary and secondary 8-hour ozone NAAQS to 0.075 ppm and codified these
NAAQS in 40 CFR 50.15, but the Pittsburgh area has not been designated
under this revision to the NAAQS.   This docket is for action on the
standard codified in 40 CFR 50.10.

 PAGE   

 PAGE   4 

 

