## MARYLAND DEPARTMENT OF THE ENVIRONMENT 

# MDE i?3:,yril1Tf:i.ffigii'Bartimore MD 21230

Martin O'Malley Govemor Anthony G. Brown Lieutenant

Governor December

4, 2008 ShariT. 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 19 1 03 -2029 Dear Ms. Katz: On June 4, 2007 the State

of Maryland submitted

a SIP revision entitled the Cecil County, Maryland 8-Hour Ozone StateImplenentation Plan and BaseYear Inventory, dated June 15, 2007,to EPA requesting its approval

asa State

Implementation

Plan (SIP) pursuant to Section 110 of the Clean

Air Act. The June4,2007 submittal consisted ofplans addressing

four elements required by sections

172(c) and 182 ofthe Clean

Air Act as implemented

by Subpart

X of40 CFR Part

51 for moderate

and above 8-hour ozone nonattainment

areas. These elements are the 2002 base year emissions

inventory,

the 1 5 percent reasonable

frrther progress

plan (RFP

plan) for 2008,the attainment

demonstration,

and the contingency

measures.

The purpose

of this letter is to identiff the RFPplan and related elements,

including the2002 base year emissions

hventory ofthe June15,

2007 plan. The RFPplan provides

for emission

reductions

by 2008 ofat least

15 percent

from baseline emissions

required by Section

182(bX1) as implemented

by 40 CFR $51.910(aX1)(iXA) aad consists ofthe followingportions ofthe June15,2007

plan document:
r The2002

base year emissions

inventory:

Section 3.0 and Appendix

A; o The RFP

targets: Section 5.0. specifrcally

Section 5.2 and Appendix

C;

. The 2008

uncontrolled

and controlled

inventories:

Section 4.0,excluding

Section 4.6, and Appendix B and Appendix C; o The 2008 RFP reductionmeasures and reductions

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

calculations

in Section

6.0,and Appendix

C and Appendix D;

TTY Us€n 1-800-?35-2258 Via Maryland

Relay Service @ RecYcled

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

Page Two
The enforceable

commitments/implementation schedules:

Section 9.0; The 2008

RFPmobile

conformity

budgets: Section 5.0and Section

8.0 except

he paragraph

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

for the Cecil County Nonattainment Are4" respectively,

in Section8.2, and Appendix F;
o The contingency

measures:

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

sections/chapters

which ought to be specified asbeing treated as partof the RFP

plan: 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 of the 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 Radiation Management

Administration at 410-537 -3255, toll-free at 800-633-6101,

or via email

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

# 1bilson Sincerely,

TTY Users 1-800-735-2258 Via Marylald Relay

Servicp @ n""v"t"o

tuPer llrvw.mde.state.md.us