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Federal Register / Vol. 86, No. 137 / Wednesday, July 21, 2021 / Proposed Rules Wilderness Refuge Breton.31 Visibility impairment at Louisianas Class I area was tracked in units of deciviews, which is related to the cumulative sum of visibility impairment from individual aerosol species as measured by monitors in the IMPROVE Network. The State used the Breton IMPROVE monitor as well as data from a nearby monitoring site, the Gulfport SEARCH site, to supplement the Breton monitoring data.
Through collaboration with the Central Regional Air Planning Association CENRAP, LDEQ worked with the central states to assess state-by-state contributions to visibility impairment in specific Class I areas in Louisiana and those affected by emissions from Louisiana in development of the Regional Haze SIPs for the first planning period. LDEQ indicated that one Class I
areas outside Louisianas borders at Caney Creek Wilderness area 32 in southwest Arkansas was impacted by emissions from within Louisiana. In the ensuing sections, we discuss how the State addressed the progress report requirements under 40 CFR 51.308g and h for these Class I areas, and we show our analysis and proposed determination as to whether the State satisfied the requirements.
B. Status of Implementation of Measures In its progress report, Louisiana summarized the status of the implementation of measures that were relied upon by Louisiana in its regional haze plan under 40 CFR 51.308g to control visibility impairing pollutants at affected class I areas. The control measures identified by the State in the progress report are as follows:
Non-EGU Controls EGU Controls CAIR and CSAPR
Smoke Management Plan SMP
Additional Federal Measures
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1. Non-EGU Controls Four non-EGU facilities were identified as BART-eligible and LDEQ
identified three of them as subject-toBART and required to install, operate, 31 The Breton National Wilderness Refuge has a total of 5,000 acres located thirty miles off the southeast coast of Louisiana. A small section of Breton National Wildlife Refuge is located on Breton Island which consists of two adjacent islands north and south with a combined length of about three miles and a width of less than one mile. The greater portion of the refuge consists of the Chandeleur Islands, an approximately twentymile-long crescent of land lying north of Breton.
Between Breton and Chandeleur are more islands owned by the state and managed by the refuge.
32 Caney Creek Wilderness is located in Polk County, Arkansas, and covers 14,460 acres on the southern edge of the Ouachita National Forest and protects a rugged portion of the Ouachita Mountains.

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and maintain BART controls. The three non-EGUs identified as subject-to-BART
were Phillips 66 Company-Alliance Refinery formerly ConocoPhillips, Mosaic Fertilizer LLCUncle Sam Plant; Eco-Services Operations, LLC
formerly Rhodia. EPA approved the SO2, NOX, and PM BART
determinations for these non-EGU
facilities in the December 21, 2017 final action 33 along with their associated AOC requirements 34 that made these control measures permanent and enforceable.
a. Phillips 66Alliance Refinery Phillips 66 installed SO2, NOX, and PM10 controls 35 required by the December 5, 2005, consent decree 36 for 22 sources. EPA approved LDEQs BART determination that the controls and conditions required by the consent decree satisfied BART. In order to make the limits enforceable for regional haze SIP purposes, Phillips 66 and LDEQ
entered into AOC No. AEAOC14
00211A to mirror the SO2, NOX, and PM10 limits imposed by the consent decree with a compliance date of April 29, 2016. The EPA final approval date was December 21, 2017, 82 FR 60520.
b. Mosaic Fertilizer, LLC
Mosaic Fertilizer, LLC installed SO2, NOX, PM10, and PM2.5 controls 37
required by its December 23, 2009, consent decree 38 for thirteen sources that are a part of three sulfuric acid operation trains A, D, and E, of which trains A and D were subject-to-BART.
EPA approved LDEQs BART
determination that the controls and conditions required by the consent decree satisfy BART. In order to make the limits enforceable for regional haze SIP purposes, Mosaic Fertilizer, LLC
and LDEQ entered into AOC No. AE
AOC1400274A to mirror the SO2, NOX, PM10, and PM2.5 limits imposed by the consent decree with a compliance deadline of June 6, 2016. The EPA final approval date was December 21, 2017
82 FR 60520.
FR 60520.
66 AOC No. AEAOC1400211A;
Mosaic Fertilizer, LLC AOC No. AEAOC14
00274A; and Eco Services Operations Corp. AOC
No. AEAOC1400957.
35 See Table 2: Phillips 66 AOC Conditions pages 79 of the States progress report.
36 U.S. et al. v ConocoPhillips Company, Civil Action No. H050258 S.D. Tx.
37 See Table 3: Mosaic AOC Conditions pages 1112 of the States progress report.
38 U.S. et al. v. Mosaic Fertilizer, LLC, Civil Action No. 096662 E.D. La.

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c. Eco Services Operations Corp.
Eco Services Operations Corp.
installed SO2 controls 39 required by its July 23, 2007, consent decree 40 for two sulfuric acid production trains, Unit 1
and Unit 2 only Unit 2 is subject-toBART. The consent decree required a scrubber to be installed on each of the units to control SO2 emissions. EPA
approved LDEQs BART determination that the controls and conditions required by the consent decree satisfy BART. In order to make the limits enforceable for regional haze SIP
purposes, Eco Services Operations Corp.
and LDEQ entered into AOC No. AE
AOC1400957 to mirror the SO2 limits imposed by the consent decree with a compliance deadline of August 8, 2016.
The EPA final approval date was December 21, 2017 82 FR 60520.
2. EGU Controls Seventeen EGU facilities were identified as BART-eligible and LDEQ
identified seven of those EGU facilities as being subject-to-BART and required to install BART controls: Cleco Brame Energy Center and six different Entergy facilities Little Gypsy, Ninemile Point, Waterford, Willow Glen, Michoud, and Nelson. EPA approved the SO2 and PM
BART determinations for these EGU
facilities in the December 21, 2017, final action 41 along with their associated AOC requirements that made the control measures permanent and enforceable. In addition, as described below, EPA
approved emission limits for NRG Big Cajun II, a BART eligible EGU source that screened out of being subject-toBART.
a. NRG Big Cajun II
NRG Big Cajun II installed SO2, NOX, PM10, and PM2.5 controls 42 required by its March 6, 2013, consent decree 43 for two BART-eligible EGU coal-fired sources Unit 1 and Unit 2. The consent decree required Louisiana Generating to refuel coal-fired Unit 2 to natural gas and install and continuously operate dry sorbent injection DSI at Unit 1
while maintaining a thirty-day rolling average SO2 emission rate of no greater than 0.380 lb/MMBtu by no later than April 15, 2015. In addition to requiring DSI, the consent decree required Louisiana Generating to retire, refuel, repower, or retrofit Unit 1 by no later 39 See Table 4: Eco Services AOC Conditions page 14 of the States progress report.
40 U.S. et al. v. Rhodia Inc., Civil Action No.
2:07CV134 WL H.D. In.
41 82 FR 60520 December 21, 2017.
42 See Table 5: Sources subject-to-BART page 15
of the States progress report.
43 U.S. et al v. Louisiana Generating, LLC, Civil Action No. 09100JJBRLB M.D. La..

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