MAY252010:kEPA.REGIONIIISTATEOFDELAWAREOFREGIONMADMJNISTRA’lfDEPARTMENTOFNATURALRESOURCESANDENVIRONMENTALCONTROLOFFICEOFTHE89KINGsHIGHWAYPHONE:(302)739-9000SECRETARYDOVER,DELAWARE19901FAX:(302)739-6242Mayl8,2010F’’ShawnGarvin(3RAOO)RegionalAdministratorRECEU.S.EnvironmentalProtectionAgencyDRegionIIIJUN320101650ArchStreetPhiladelphia,PA19103-2029DivisionDirector(3APOO)DearMr.Garvin:Pursuanttosection181(a)(5)oftheCleanAirActthisisarequestfora1-yearattainmentdateextension,toJune15,2011,fortheStateofDelawareandthePhiladelphia-WilmingtonAtlanticCity,PA-DE-MD-NJnon-attainmentarea(NAA).ThisNAAisclassifiedasmoderatenon-attainmentforthe19978-hourozonenationalambientairqualitystandard.Bythisletter,Iamcertifyingthat:1)TheStateofDelawarehascompliedwithallrequirementsandcommitmentspertainingtotheareaintheapplicableozoneimplementationplan;and2)ThePhiladelphia-Wilmington-AtlanticCity,PA-DE-MD-NJnon-attainmentarea’s4thihighestdaily8-hourmonitoredvalueduringthe2009ozoneseasonis0.084ppmorless.AttachedisthelettercertifyingthatDelaware’sozoneairqualitydataintheAirQualitySystemiscomplete,quality-assuredambientairqualitymonitoringdataforthe2009attainmentyearozoneseason.Iwouldappreciateifyouwouldinitiateactiononthisrequestassoonaspossible.Asalways,feelfreetocontactmeorAliMirzakhalili,ProgramAdministrator,(302)739-9402,ifVe€44L4’ze47ood1taedeftee.rd4OcøafMr.ShawinGarvinMay18,2010Page2youhaveanyquestionsconcerningthisrequest.WelookforwardtocontinuingthecooperativeeffortbetweenDelawareandEPAinthisimportantwork.Sincerely,CollinP.O’MaraSecretarycc:AuMirzakhaliliDaveArnoldAttachmentSTATEOFDELAWAREDEPARTMENTOFNATURALRESOURCES &ENVIRONMENTALCONTROL DVIS1ON

OF AIR

& WASTE MANAGEMENTAIRQUALITYMANAGEMENT156S.STATESTREETTELEPHONE:

(302) 739 9402SECTIONDOVER,DELAWAIE19901FAxNo.:
(302) 739- 3106 March

22, 2010 Mr. Shawn

M. Garvin (3RAOO) Regional Administrator U.
S. Environmental Protection Agency Region

III 1650 Arch Street Philadelphia,

PA 19103 Dear Mr. Garvi

n: In accordance

with recent revisions

to 40 Code

of Federal Regulations

(CFR) Chapter

1 Part

58 and associated guidance
from EPA,

we arc submitting

this data certification

notice

for the Delaware

2009

air pollutant

raw data, I hereby certify that,

to the best
of my knowledge,

the Delaware

2009 ambient pollutant concentration

data and the associated quality assurance

data are completely submitted

to the Air Quality System (AQS),

and the ambient

data are accurate taking
into consideration

the quality assurance findings.

The data subject

to this certification

are identified

as all combinations

of site, monitor, pollutant,

and POC included

in the AQS reports AMP45O, AMP45ONC,

and A.MP 255, which

are being submitted electronically

as part
of this certification package

to your office and

to the people hsted

as copied below.

The only ecept1on

to the quail

ty assurance

data completeness

is for the P1v12.5 spcciation sampler

flow checks, which have
not been subnijtted

to AQS due

to the lack

of an established procedure

fbr the submittal. I also certify
that the data collection procedures conformed

to the applicable quality assurance, air monitoring methodology,

probe siting criteria

and reporting requirements

in Part

58 of the CFR, Appendices

A, C,

£ and

F. The o:nly exceptions

are: • PM 10, which does not meet
the coLlocation requirement

since Delaware

only has

a single ni on ilor; an.d • 1_cad, which
was monitored

as part
of an air toxics metals project

in 2009,
and the data

is not yet available. Ve&ae‘ od 2 tatte Veeid-OttMr. Shawn

lvi. Garvin March

22, 2010 Page Two Finally, during 2009 Delaware

did not record

any air pollution incidents
when ambient levels

of a pollutant reached

or exceeded
levels specified

in 40 CFR Subpart

H, 51.1

51 that wOuld cause significant

harm

to public health. If you have any questions

or need additional information
please

feel free

to call me

at 302-739- 9402. Sincerely,//, AlIMirzakhalili,

P,E. Administrator cc: Walter Wilkie,
U.S. EPA Region

3, Air Quality Analysis Branch Chief Pauline Devose,

U.S. EPA Region

3, Air Quality Analysis Branch Joe Martini,

An Surveillance
Branch Managci,

w/o attachments Betsy Frey, Air Quality Management

QA Coordinator,

wlo attachmentsI‘4