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Bonay hNOAL

<;O\IT-:!L'JOR

22'52193240

~tate of JLouisiana

OEPARTMENT OF ENVIRONMENTAL QUALITY

E~IRONMENTA.L SERVICES

PAGE 81/02

PEGGY M. HATCH

St;t:R.f.TARV

Mr. Guy R. Donaldson

Chief, Air Planning Section (6PD)

U.S. Environmcntal Protection Agency, Region (j

1445 Ross Avenue, Suite 1200

Dallas. TX 75202-2733

Re: State Implementation Plan (SIP) fnfrastruCl'ure Requirements under Section 11 O(aXl) and

(2) of tne Clean Air Act (CAA)

Dear Mr. Donaldson:

Pcr discussions With Ms. Carrie Paige of your staff. the Louisiana Department of Environmental

Quality (lDEQ) undcrstc:mds that EPA is working to approve Louisiana's SIP as meeting the

requirements of Section 11O(a)(l) and (2) of the eAA. ll1is lener serves as a supplemental

certificatioo for the purposes of clarifying and amending Ute S1ate of Louisiana's prior letters of

certification dated December 11. 2007l and January 7.2008.

Ol.one and PMu

By letter dated December 11, 2007. the state of Louisiana, through LDEQ. certified that its

existing SIP for implementation of the 1997 ozone and PM.2s ~AAQS included nIl of the

requirements ,5et fortll in Section 110(a)(1) and (2) ofthe eA.A.

This correspondence clarifies that LDEQ's January 7, 2008. submittal addresses the 1997 ozone

and PM2.5 Natlonal Ambient Air Quality Standards (NAAQS). LDEQ reiterates that the

infrastructure SIP for implementation of the 1997 ozone and PM2.~ NAAQS as submitted 10 EPA

satisfies the requirements established by Section llO(a)(l) and (2) of the CAA.

Greenhouse Cases (GHGs)

Section IIO(a)(2HC)

iDEQ has promulgated rules establishjng programs for the prevention of signific:lnt

deterioration of air quality (LAC 33:H1.509) and minor source permilting requirements (LAC

33:II1.501 and 503). These rules have been submitted to EPA in various SIP revisions and ha....c

been approved in the Federal Register.

LDEQ certifies that those aspects of our Prevention of Significant Deterioration (PSD) program

which pertain to the regulalion of GHGs at or above lhe thresholds set forth in the federal GHG

Tailoring Rule· and are before EPA as part of the infrastruclure SIP submittal (i.e., those portIons

1 Prevenlion ofSlsnilic:l.lll DelertOrllt;on Ind Tille V GrecnhOll~ Gas Tililorins. Rule (75 FR 31514, JUIl: J. 21)10)

Pon O(('CC B,_,,, 4)1,1, Balon R.ou~. I.Q\lisi~n~ 70821-4.31.1' Phon.: 225·219-3181 • I'u: 225·21~·.BI)9

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03/24/2ell 13:08 22521'93240

PAGE 02/02

Mr. Guy R. Donaldson

Page 2

of LAC 33:JII.S09 that remain SIP-approved following the promulgation of EPA's PSO SIP

Narrowing Rulc1

) satisfy the rcquirem:nts ofsection t lO(a)(2)(C).

LDEQ also celtifies that OUf minor :;ource permitting program meets the requirements of :;ection

IIO(a)(2)(C)

Section 1J0(a)(2)(~

With regard to tbe need for adequate resources to implement the PSD program, LDEQ cenifics . that OUT resources for those aspects ofthe PSD program which pertain to the regulation ofGHGs

at or above tb~ thresholds set fOflh in the federal OHG Tailoring RulE: and are b~forc EPA as pan

oCthe infrastructure SIP submiUal satisfy tile requirements ofsection 11.0(a)(2)(£).

Section 110(.)(2)(J}

With regard to PSD. LDEQ certifies that those 3Sj')eets of the PSD program whieh pertain to the

regula lion of GHGs at or above the thr~holds set forth in the federal GHG Tailoring R\lle and

arc before EPA a!' parl of the infraslrucNre SIP submittal satisfy the requirements of section

J 10(,)(2)(.1).

Should you have any questions concerning this matter, please feel free to contact Vivian Aucoin

of the Air Penn.its Divi~ion at (225) 219-3419.

PMH

2 Limit.llion of Approvc.1 of Prevention ofSignificant Deterioration Pro\'i9ion~ Concem;ng Greenhouse GOI!'>

EtniUint\-SoorccJli III St"tc Implcnlf:nt:uion PlallS (75 FR. 82536. Dece:m~r 30, 2010)