Mosaic Fertilizer, LLC (“Mosaic”) Uncle Sam Plant

Response to Question #4 of September 1, 2015 Clean Air Act Section 114(a) Information Request

August 2006 Preliminary BART 

Inventory

Baseline Emission Rates

June 2007 Best Available Retrofit Technology Analysis/

July 2015 Best Available Retrofit Technology Analysis

Baseline Emission Rates

Sulfur Dioxide

Oxides of 

Nitrogen Sulfur Dioxide Oxides of Nitrogen

Emissions Unit

SO2

(tons/day)

NOx

(tons/day)

SO2

(lb/hr)

Documentation for

SO2

(lb/hr)

SO2

(tons/day)

NOx

(lb/hr)

Documentation for

NOx

(lb/hr)

NOx

(tons/day)

A Train Single Absorption H2SO4 Plant (EPN SATrain1, EQT 0067)27.007 0.12 2,250.16 Maximum 3-hour rolling average PTE emission 

rate listed in Permit No. 2560-00004-V0/V1, 

the maximum short-term PTE rate in effect 

before application of proposed BART controls

27.002 10.00 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.120

A Train Start-Up Burner (EPN S-ATrain2, EQT 

0068)

0.0008 0.387 0.07 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.00084 32.31 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.388

A Train Fugitive Emissions (EPN S-ATrain3, 

FUG 0002)

0.0020 - 115.69 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

1.388 - - -

D Train Double Absorption H2SO4 Plant (EPN SDTrain1, EQT 0074)4.500 0.12 375.00 Maximum 3-hour rolling average PTE emission 

rate listed in Permit No. 2560-00004-V0/V1, 

the maximum short-term PTE rate in effect 

before application of proposed BART controls

4.500 11.25 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.135

D Train Start-Up Burner (EPN S-DTrain2, EQT 

0075)

0.0008 0.387 0.07 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.00084 32.31 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.388

D Train Fugitive Emissions (EPN S-DTrain3, 

FUG 0003)

0.0030 - 186.88 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

2.243 - - -

E Train Double Absorption H2SO4 Plant (EPN SETrain1, EQT 0076)7.599 0.288

E Train Start-Up Burner (EPN S-ETrain2, EQT 

0077)

0.0008 0.387

E Train Fugitive Emissions (EPN S-ETrain3, FUG 

0005)

0.0054 -

Sulfur Unloading Pit (EPN S-SulfurPit, EQT 

0081)

0.0019 - 0.13 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.0016 - - -

Sulfur Storage Tank A (EPN S-SulfurA, EQT 

0082)

0.0039 - 0.28 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.0034 - - -

Emissions Unit Not BART-Eligible

("In Existence" > August 7, 1977; See January 14, 1991 preconstruction permit application)

Emissions Unit Not BART-Eligible

("In Existence" > August 7, 1977; See January 14, 1991 preconstruction permit application)

Emissions Unit Not BART-Eligible

("In Existence" > August 7, 1977; See January 14, 1991 preconstruction permit application)

1 of 3
Mosaic Fertilizer, LLC (“Mosaic”) Uncle Sam Plant

Response to Question #4 of September 1, 2015 Clean Air Act Section 114(a) Information Request

August 2006 Preliminary BART 

Inventory

Baseline Emission Rates

June 2007 Best Available Retrofit Technology Analysis/

July 2015 Best Available Retrofit Technology Analysis

Baseline Emission Rates

Sulfur Dioxide

Oxides of 

Nitrogen Sulfur Dioxide Oxides of Nitrogen

Emissions Unit

SO2

(tons/day)

NOx

(tons/day)

SO2

(lb/hr)

Documentation for

SO2

(lb/hr)

SO2

(tons/day)

NOx

(lb/hr)

Documentation for

NOx

(lb/hr)

NOx

(tons/day)

Sulfur Storage Tank B (EPN S-SulfurB, EQT 

0083)

0.0039 - 0.28 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.0034 - - -

Dock Fugitive Emissions (EPN S-DockFug, FUG 

0004)

0.0017 - 0.14 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before 

application of proposed BART controls

0.0017 - - -

No. 1 Packaged Steam Boiler (EPN S-Boiler1, 

EQT 0072)

- 0.516 0.09 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before the unit 

was shut down and deleted from Title V 

permit

0.0011 43.08 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before the unit 

was shut down and deleted from Title V 

permit

0.517

No. 2 Packaged Steam Boiler (EPN S-Boiler2, 

EQT 0073)

- 0.516 0.09 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before the unit 

was shut down and deleted from Title V 

permit

0.0011 43.08 Hourly maximum PTE emission rate listed in 

Permit No. 2560-00004-V0/V1, the maximum 

short-term PTE rate in effect before the unit 

was shut down and deleted from Title V 

permit

0.517

Diesel-Fired Air Compressor (EPN S-DEngine1, 

EQT 0086)

0.0080 0.133

Diesel-Fired Emergency Generator (EPN SDEngine2, EQT 0087)0.0050 0.089

Portable Diesel-Fired Equipment - Phos Acid 

(EPN PPortEquip, EQT 0066)/

Portable Diesel-Fired Equipment CAP - Phos 

Acid (EPN PPortEquipCAP, GRP 0009; EQTs 

0092-0099)

- 0.0814

Portable Diesel-Fired Equipment - 

Maintenance (EPN M-4, EQT 0004)/

Maintenance Portable Diesel-Fired Equipment 

CAP (EPN M-4CAP; EQTs 0100-0102, 0108)

- 0.05

Sulfur Surge Tank (EPN S-SurgeTnk, EQT 0084) 0.0018 -

Diesel Pump on Stack - Seepage Pump (EPN SDEngine3, EQT 0088)0.0056 0.084

Diesel-Fired Water Pump (EPN S-DEngine4, 

EQT 0089)

0.0044 0.066

Rental Hydroblaster (EPN S-DEngine5, EQT 

0090)

0.0077 0.116 Emissions Unit Not BART-Eligible

(Nonroad Engine; Deleted from Title V permit)

Emissions Units Not BART-Eligible

(Nonroad Engines; Deleted from Title V permit)

Emissions Units Not BART-Eligible

(Nonroad Engines; Deleted from Title V permit, except for EQT 0102)

(EQT 0102 was mistakenly not deleted from Title V permit when this permit was recently opened; EQT 0102 will be deleted from Title V permit the next time the permit is 

opened)

Emissions Unit Not BART-Eligible

("In Existence" > August 7, 1977; See December 21, 1979 preconstruction permit application)

Emissions Unit Not BART-Eligible

("In Existence" > August 7, 1977; Engine date of manufacture - July 1, 1979)

Emissions Unit Not BART-Eligible

("In Existence" > August 7, 1977; Engine date of manufacture - October 13, 2004)

Emissions Unit Not BART-Eligible

(Nonroad Engine; Deleted from Title V permit)

Emissions Unit Not BART-Eligible

("In Existence" > August 7, 1977; Engine date of manufacture - July 31, 1984)

2 of 3
Mosaic Fertilizer, LLC (“Mosaic”) Uncle Sam Plant

Response to Question #4 of September 1, 2015 Clean Air Act Section 114(a) Information Request

August 2006 Preliminary BART 

Inventory

Baseline Emission Rates

June 2007 Best Available Retrofit Technology Analysis/

July 2015 Best Available Retrofit Technology Analysis

Baseline Emission Rates

Sulfur Dioxide

Oxides of 

Nitrogen Sulfur Dioxide Oxides of Nitrogen

Emissions Unit

SO2

(tons/day)

NOx

(tons/day)

SO2

(lb/hr)

Documentation for

SO2

(lb/hr)

SO2

(tons/day)

NOx

(lb/hr)

Documentation for

NOx

(lb/hr)

NOx

(tons/day)

TOTAL (tons/day) 39.163 3.340 35.147 2.064

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