## MARYLAND DEPARTMENT OF'THE ENVIRONMENT 

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Martin O'Malley Governor Anthony G. Brown Lieutenant

Govemor December

4, 2008 Shari T. Wilson Secretary Robert M. Summers,

Ph.D. Deputy Secretary

Ms. Judith

M. Katz Director, Air Protection

Division EPA Region

III (3AP00) 1650 Arch Street Philadelphia,

P A 19103-2029 DearMs. Katz: On June 4, 2007 the State

of Maryland submitted

a SIP revision entitled the Baltimore Nonattainment

Area 8-Hour Ozone

StateImplementation

Plan and BaseYear Inventory, dated June15,2007,to EPA requesting its approval

asa State

Implementation

Plan (SIP) pursuant to Section 110 of the Clean

Air Act. TheJune

4, 2007 submittal consisted ofplans addressing four elements

required by sections

172(c) and 182 of the Clean Air Act as implemented

by Subpart X of 40 CFR Part 5 1 for moderate and above

8-hour ozone

nonattainment

areas. These elements ue the 2002 base

year emissions

inventory,

the 15 percent

reasonable

further progress plan (RFP plan) for 2008,the attainment demonstration,

and the contingency measrues.

The purpose

of this letter is to identiff the RFP plan and related elements,

including the 2002 base year emissions

inventory

ofthe June15,2007

plan. The RFPplan provides

for emission

reductions

by 2008 ofat least

15 percent

from baseline emissions

required by section

182(b)(1) as implemented

by 40 CFR $51.910(aXlXiXA) and consists ofthe following portions ofthe June15,2007

plan document:

. The 2002

base year emissions

inventory: Section

3.0 and Appendix

A; o The RFP

targets: Section 5.0, specifically

Section 5.2 ard Appendix

C; o The2008

uncontrolled

& controlled

inventories:

Section 4.0 excludins

Section 4.6. and Appendix B and Appendix C;
r The2008

RFP reduction

measures & reductions

and the RFP demonstration: Section 5.0, the 2008 emission reduction calculations

in Section

6.0, Appendix

C and Appendix

D;

TTY Use6 1-800-735-2258 Via Maryland

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PaPer www.mde.state.md.usMs. Judith M. Katz Page Two

o The enforceable

commitrnents/implementation schedules:

Section9.0; o The2008 RFP

mobile conformity

budgets: Section 5.0 andSection

8.0 except

he paragraph

and the table titled "Attainment Year Mobile Budgets"and "2009 Attalunent Mobile Budgets

for the Baltimore Nonattainment Areq" respectively,

in Section8.2, and Appendix

F; o The contingency

measures:

Section 10.0; and o The "general/executive summary/introductory"

sections/chapters

which ought to be specified asbeing treated as part ofthe RFPplan: Sections 1.0 and 2.0. Also enclosed

with our June

4, 2007 letter were administrative and other materials

related to the public notice and hearingamong otherthings. These

other materials

constitute

part ofthe submittalfor each

of the SIP revision elements detailed above. If you have any questions regarding

this letter, or require additional information, please contact Mr. George

(Tad) S. Abum, Jr., Director of the Air and RadiationManagement Administration at 410-537 -3255, toll-free at 800-633-6101,

or via email

gabum@mde.state.md.us. He will be oleased to assist vou. 

# 11._

Secretary

TTY Users 1-800-735-2258 Via Maryland

Relay Servic€ @ RecYcled

PaPer www.mde.state.md.us