1 2 3 4 5 6 7 8 9 **Capacity Fuel**  Unique ID Name Plant Code **Unit MW gross**  **Fuel Avg NOx**  **Avg SO2 2011NOx**  126_4 Sundt 126 4 173.3 Coal 0.361 0.477 0.445 Notes: 1 1 1
Notes 1 Determined from data reported to US EPA and available on the Clean Air Markets Division Web Site

2 For Sundt unit 4, used 2011 (which was the higher of CAMD 2008-2010 average and 2011 average) 3This is an estimate for 2008-2011 period based upon reported heat input, capacity and heat rate in NEEDS v4.10 4 From NEEDS v4.10 Economic Assumptions: Capital Recovery Factor 9.44%

Interest Rate 7.00% Period (yrs) 20
Insurance 0.30% From Integrated Planning Model ver 4.10 documentationpage 8-11 Property Taxes 0.90% From Integrated Planning Model ver 4.10 documentationpage 8-11 **2008-2010 Reported Avg 2011 Reported Rates** 10 11 12 13 14 **2008-2011 2011 SO2**  **model NOx model SO2**  **Capac. Fctr Heat Rate**  **Burner Controls**  **BART or RP Wkbk**  **split?** 0.729 0.445 0.729 37% 10548W LNBO BART 2 1 2 2 3 4 Determined from data reported to US EPA and available on the Clean Air Markets Division Web Site For Sundt unit 4, used 2011 (which was the higher of CAMD 2008-2010 average and 2011 average) This is an estimate for 2008-2011 period based upon reported heat input, capacity and heat rate in NEEDS v4.10

From Integrated Planning Model ver 4.10 documentationpage 8-11 From Integrated Planning Model ver 4.10 documentationpage 8-11 **modelled rate 2011 Reported Rates** NA 7 8 10 **2008-2011 Reported**  **2008-2010 Reported Avg** Notes on model NOx (past tense = Phase 1 work) **Avg NOx Avg NOx**  **Avg SO2 2011 SO2**  Used 2011 (=max of '08-'10 and '11) 0.503 0.428 0.477 0.729 1 1 112

**model SO2** 0.729 2

### Variable **Designation Units** 

Unique ID Plant Name Unit # Unit Size A MW Gross Heat Rate C Btu/kwhr SO2 Rate D lb/Mmbtu CF Type of Coal E Coal Factor F Retrofit Factor B HR Factor G Heat Input H Btu/hr Limestone Rate K ton/hr Waste Rate L ton/hr
Aux. Power M % Makeup Water Rate N (1000gph) Limestone Cost P $/ton Waste Disposal Cost Q $/ton Aux Power Cost R $/kwh Makeup Water Cost S $/1000 Operating Labor Rate T $/hr

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)** BMR ($) = base absorber island cost BMF ($) = base reagent preparation cost BMW ($) = base waste handling cost BMB ($) = BOP cost BMWW ($) = Waste water treatment BM ($) = Total base cost BM ($/KW) = **Total Project Cost**

A1 = 10% of BM ($) = Eng. and Construction management A2 = 10% of BM ($) = Labor adjustment A3 = 10% of BM ($) = Contractor profit/fees**CECC ($) =** Cap., Eng. and management **CECC ($/kw) =**
B1 = 5% of CECC owners cost **TPC' ($) =** TPC w/o AFUDC **TPC' ($/kw) =**
B2 = 10% of TPC' AFUDC (3yr cycle) **TPC ($) = Total project cost**  **TPC ($/kw) =**
**Fixed O&M Cost**FOMO ($/kw-yr) = fixed O&M - additional labor cost

FOMM ($/kw-yr) = fixed O&M - additional maintenace, mtl and labor cost FOMA ($/kw-yr) = fixed O&M - additional administration labor cost FOMWW ($/kw-yr) = fixed O&M - wastewater treatment **FOM ($/kw-yr) = Total Fixed O&M Cost** 
**Variable O&M Cost**

VOMR ($/MWhr) = Variable O&M - limestone VOMW ($/MWhr) = Variable O&M - waste disposal VOMP ($/MWhr) = Variable O&M - aux. power VOMM ($/MWhr) = Variable O&M - makeup water **VOM ($/MWhr) = Total Variable O&M Cost** 

CR = Property Taxes and Insurance

Total Charge Rate **Cost of control - $/Ton** CF

Control Efficiency for SO2>3lb/Mbtu=98%; <3 = (SO2-0.06)/SO2 **Uncontrolled Rate**

SO2 Rate (lb/hr) (lb/Mbtu*Heat Input)/1000000 SO2 Rate (lb/MMBtu)

SO2 (TPY) Lb/hr*8760*CF/2000 **Controlled Rate** SO2 Rate (lb/hr)

SO2 Rate (lb/MMBtu)

SO2 (TPY)**Tons/Year Removed Total Cost/year**  TPC*CR+(FOM*MW)+VOM(MW*8760)*CF **$/Ton**

### Value **Calculation**

126_4 Sundt read from Plant Data table 4 read from Plant Data table 173.3 read from Plant Data table 10548 read from Plant Data table 0.729 read from Plant Data table 37.0% read from Plant Data table sub user input 1.05 Bit=1; PRB=1.05; Lig=1.07 1 1 = typical retrofit 1.0548 C/10000 1.83E+09 A*C*1000 1.17 17.52*A*D*G/2000 2.11 1.811*K
1.30 (1.05e^(0.155*D))*F*G 15 (1.674*D+74.68)*A*F*G/1000 15 30 0.06 1 60Total Labor Cost

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)** 23,424,363 7,038,865 3,561,506 42,174,012 76,198,746 440

7,619,875 7,619,875 7,619,87599,058,370 572

- 99,058,370 572

- 99,058,370 572

8.6 6.6 0.34

15.58

0.10 0.37 0.78 0.08
1.33
9.44% 1.20% 10.64%

37% 92%
1333 0.729 2160
109.7 0.06 178**1982**

13986681 7057Source data

http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentationhttp://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation

### Variable **Designation Units**  **Value**

Unique ID Unique ID 126_4 Plant Name Plant Sundt Unit # Unit 4 Unit Size A MW 173.3 Gross Heat Rate C Btu/kwhr 10548 SO2 Rate D lb/Mmbtu 0.729 CF CF 37.0% Type of Coal E prb Coal Factor F 1.05 Retrofit Factor B 1 HR Factor G 1.0548 Heat Input H Btu/hr 1.83E+09 Lime Rate K ton/hr 0.9267 Waste Rate L ton/hr 2
Aux. Power M % 1.45 Makeup Water Rate N (1000gph) 11 Lime Cost P $/ton 95 Waste Disposal Cost Q $/ton 30 Aux Power Cost R $/kwh 0.06 Makeup Water Cost S $/1000 1 Operating Labor Rate T $/hr 60

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)**

BMR ($) = base absorber island cost 23,714,749 BMF ($) = base reagent preparation cost 11,409,866 BMB ($) = BOP cost 33,363,401 BM ($) = Total base cost 68,488,016 BM ($/KW) = 395 **Total Project Cost** A1 = 10% of BM ($) = Eng. and Construction management 6,848,802 A2 = 10% of BM ($) = Labor adjustment 6,848,802 A3 = 10% of BM ($) = Contractor profit/fees 6,848,802**CECC ($) =** Cap., Eng. and management 89,034,421

**CECC ($/kw) =** 514 B1 = 5% of CECCowners cost
- **TPC' ($) =** TPC w/o AFUDC 89,034,421 **TPC' ($/kw) =** 514 B2 = 10% of TPC' AFUDC (3yr cycle)

- **TPC ($) = Total project cost**  89,034,421 **TPC ($/kw) =** 514
**Fixed O&M Cost** FOMO ($/kw-yr) = fixed O&M - additional labor cost 5.8 FOMM ($/kw-yr) = fixed O&M - additional maintenace, mtl and labor cost 5.9 FOMA ($/kw-yr) = fixed O&M - additional administration labor cost 0.24
**FOM ($/kw-yr) = Total Fixed O&M Cost**  11.93
**Variable O&M Cost** VOMR ($/MWhr) = Variable O&M - limestone 0.51 VOMW ($/MWhr) = Variable O&M - waste disposal 0.37 VOMP ($/MWhr) = Variable O&M - aux. power 0.87 VOMM ($/MWhr) = Variable O&M - makeup water 0.06
**VOM ($/MWhr) = Total Variable O&M Cost**  1.80

CR = 9.44% Property Taxes and Insurance 1.20%

Total Charge Rate 10.64% **Cost of control - $/Ton**CF 37% Control Efficiencyfor SO2>1.6lb/Mbtu=95%; <3 = (SO2-0.08)/SO2 89% **Uncontrolled Rate** (lb/Mbtu*Heat Input)/1000000 SO2 Rate (lb/hr) Lb/hr*8760*CF/2000 1333 SO2 Rate (lb/MMBtu) 0.729

SO2 (TPY) 2160 **Controlled Rate** SO2 Rate (lb/hr) 146.2 SO2 Rate (lb/MMBtu) TPC*CR+(FOM*MW)+VOM(MW*8760)*CF 0.08

SO2 (TPY) 237**Tons/Year Removed 1923** 

**Total Cost/year** $12,553,539 **$/Ton** $6,529

### Calculation

Not included at present user input user input user input user input Bit=1; PRB=1.05; Lig=1.07 1 = typical retrofit C/10000 A*C*1000 (0.6702*(D^2)+13.42*D)*A*G/2000 (95% SO2) http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation (0.8016*(D^2)+31.1917*D)*A*G/2000 (0.000547*D^2+0.00649*D+1.3)*F*G (0.04898*(D^2)+0.5925*D+55.11)*A*F*G/1000

Total Labor Cost

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)** The image part with relationship ID rId1 was not found in the file.http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation

### Variable **Designation Units**  **Value**

Unique ID 126_4 Plant Sundt Unit 4 Unit Size A MW 173.3 Gross Heat Rate C Btu/kwhr 10548 SO2 Rate D lb/Mmbtu 0.729 CF CF 37.0% Type of Coal E 1.05 Retrofit Factor B 1 PM control F FF Reagent G 1 SO2 Removal H 75% Heat Input J Btu/hr 1.83E+09 NSR K 1.5 Reagent feed Rate M ton/hr 2.40

Waste Rate N ton/hr 1.69

Ash waste rate P ton/hr 5.22 Aux. Power Q % 0.28 Reagent Cost R $/ton 145 Waste Disposal Cost S $/ton 50 Aux Power Cost T $/kwh 0.06 Operating Labor Rate U $/hr 60**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, and retrofit difficulty)**
BM ($) = Total base cost 3587992 BM ($/KW) = 21 **Total Project Cost** A1 = 5% of BM ($) = Eng. and Construction management 179400 A2 = 5% of BM ($) = Labor adjustment 179400 A3 = 5% of BM ($) = Contractor profit/fees 179400 **CECC ($) =** Cap., Eng. and management 4,126,190 **CECC ($/kw) =** 24
B1 = 5% of CECCowners cost
-

**TPC ($) = Total project cost**  $4,332,500 **TPC ($/kw) =** from curve 25
**Fixed O&M Cost** FOMO ($/kw-yr) = fixed O&M - additional labor cost 0.72 FOMM ($/kw-yr) = fixed O&M - additional maintenace, mtl and labor cost 0.21 FOMA ($/kw-yr) = fixed O&M - additional administration labor cost 0.02
**FOM ($/kw-yr) = Total Fixed O&M Cost**  0.95
**Variable O&M Cost** VOMR ($/MWhr) = Variable O&M - limestone 2.01 VOMW ($/MWhr) = Variable O&M - waste disposal 1.99 VOMP ($/MWhr) = Variable O&M - aux. power 0.17
**VOM ($/MWhr) = Total Variable O&M Cost**  4.17

CR = 9.44% Property Taxes and Insurance 1.20%

Total Charge Rate 10.64% **Cost of control - $/Ton**CF 37% Control Efficiencyfor SO2>1.6lb/Mbtu=95%; <3 = (SO2-0.08)/SO2 75%**Uncontrolled Rate** (lb/Mbtu*Heat Input)/1000000

SO2 Rate (lb/hr) Lb/hr*8760*CF/2000 1333 SO2 Rate (lb/MMBtu) 0.729

SO2 (TPY) 2160 **Controlled Rate** SO2 Rate (lb/hr) 333.1 SO2 Rate (lb/MMBtu) TPC*CR+(FOM*MW)+VOM(MW*8760)*CF 0.18

SO2 (TPY) 540 **Tons/Year Removed 1620**  **Total Cost/year** 2967501 **$/Ton** 1832

### Calculation

Bit=1; PRB=1.05; Lig=1.07 1 = typical retrofit milled =1; unmilled =2
A*C*1000 (1.2011*1000000)*k*a*c*d

(0.7035-0.00073696*H/K)*M

(A*C)*coal ash*(1- Boiler ash Removal)/2*HHV) Bit: ash=0.12; BAR=0.2; HHV=11000 PRB: ash=0.06; BAR=0.2; HHV=8400 LIG=0.08; BAR=0.2; HHV=7200 Milled: M*20/A; unmilled: M*18/A http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation Note: Capital Cost equations were modified to be a constant $25/kWe because in my judgement S&L's estimates tend to overestimate the costs, especially for small units
Total Labor Cost DSI capital cost info developed from: 

### Staudt, J., Andover Technology Partners, and MJ Bradley and Associates, “Control Technologies to Reduce Conventional and Hazardous Air Pollutants from Coal-Fired Power Plants”, prepared for Northeast States for Coordinated Air Use Management (NESCAUM), March 31, 2011 Lipinski, G., Leonard, J., Richardson, C., URS Corporation, “Assessment of Technology Options Available to Achieve Reductions of Hazardous Air Pollutants,” April 5, 2011 The image part with relationship ID rId1 was not found in the file.**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, and retrofit difficulty)**http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation Note: Capital Cost equations were modified to be a constant $25/kWe because in my judgement S&L's estimates tend to overestimate the costs, especially for small units

DSI capital cost info developed from: 

### Staudt, J., Andover Technology Partners, and MJ Bradley and Associates, “Control Technologies to Reduce Conventional and Hazardous Air Pollutants from Coal-Fired Power Plants”, prepared for Northeast States for Coordinated Air Use Management (NESCAUM), March 31, 2011 Lipinski, G., Leonard, J., Richardson, C., URS Corporation, “Assessment of Technology Options Available to Achieve Reductions of Hazardous Air Pollutants,” April 5, 2011Note: Capital Cost equations were modified to be a constant $25/kWe because in my judgement S&L's estimates tend to overestimate the costs, especially for small units



### Staudt, J., Andover Technology Partners, and MJ Bradley and Associates, “Control Technologies to Reduce Conventional and Hazardous Air Pollutants from Coal-Fired Power Plants”, prepared for Northeast States for Coordinated Air Use Management (NESCAUM), March 31, 2011 Lipinski, G., Leonard, J., Richardson, C., URS Corporation, “Assessment of Technology Options Available to Achieve Reductions of Hazardous Air Pollutants,” April 5, 2011

### Staudt, J., Andover Technology Partners, and MJ Bradley and Associates, “Control Technologies to Reduce Conventional and Hazardous Air Pollutants from Coal-Fired Power Plants”, prepared for Northeast States for Coordinated Air Use Management (NESCAUM), March 31, 2011

### Variable **Designation Units** 

Unique ID 126_4 Plant Sundt Unit 4 Unit Size A MW 173.3 Gross Heat Rate C Btu/kwhr 10548 NOx Rate D lb/Mmbtu 0.445 CF J CF 0.37 Type of Coal F prb Coal Factor G 1.05 Retrofit Factor B 1 HR Factor H 1.0548 Heat Input I Btu/hr 1.83E+09 CF J 0.37 NOx Removal Eff K % 88.8% NOx Removal factor L 1.11 NOx Removed M lb/hr 7.22E+02 Urea rate (100%) N lb/hr 504 Steam Required O lb/hr 570 Aux. Power P % 0.59 Urea Cost (50% sol) R $/ton 400 Catalyst Cost S $/m3 8000 Aux Power Cost T $/kwh 0.06 Steam Cost U $/Klb 4 Operating Labor Rate V $/hr 60

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)**

BMR ($) = SCR 23,163,665 BMF ($) = base reagent preparation cost 2,125,325 BMA ($) = APH (SO@> 3lb/Mmbtu) BMB ($) = fans/aux power 3,457,084 BM ($) = Total base cost 28,746,074 BM ($/KW) = 166 **Total Project Cost** A1 = 10% of BM ($) = Eng. and Construction management 2,874,607 A2 = 10% of BM ($) = Labor adjustment 2,874,607 A3 = 10% of BM ($) = Contractor profit/fees 2,874,607**CECC ($) =** Cap., Eng. and management 37,369,896

**CECC ($/kw) =** 216
B1 = 5% of CECCowners cost
- B2 = 6% of CECC + B1 AFUDC (2yr cycle)

-

**TPC ($) = Total project cost**  37,369,896 **TPC ($/kw) =** 216

**Fixed O&M Cost** FOMO ($/kw-yr) = fixed O&M - additional labor cost 0.4 FOMM ($/kw-yr) = fixed O&M - additional maintenace, mtl and labor cost 1.7

**FOM ($/kw-yr) = Total Fixed O&M Cost**  2.09
**Variable O&M Cost** VOMR ($/MWhr) = Variable O&M - urea 1.16 VOMW ($/MWhr) = Variable O&M - catalyst disposal 0.92 VOMP ($/MWhr)= Variable O&M Power 0.35 VOMM ($/MWhr) = Variable O&M - steam 0.013
**VOM ($/MWhr) = Total Variable O&M Cost**  2.45

CR = 9.44% Property Taxes and Insurance 1.20%

Total Charge Rate 10.64% **Cost of control - $/Ton**CF 37% Control Efficiency 89% **Uncontrolled Rate** (lb/Mbtu*Heat Input)/1000000 NOx Rate (lb/hr) Lb/hr*8760*CF/2000 813 NOx Rate (lb/MMBtu) 0.445

NOx (TPY) 1318 **Controlled Rate** NOx Rate (lb/hr) 91.4 NOx Rate (lb/MMBtu) TPC*CR+(FOM*MW)+VOM(MW*8760)*CF 0.05NOx (TPY) 148

**Tons/Year Removed 1170**  **Total Cost/year** $5,712,715 **$/Ton** $4,882

### Calculation

blends are treated as PRB to be conservative Bit=1; PRB=1.05; Lig=1.07 1 = typical retrofit C/10000 A*C*1000 read from Plant Data table for NOx>0.5lb/Mbtu=90%; <.5 = (NOx-0.05)/NOx equals K/80% based upon 8/10/12 email from Sargent & Lundy, and See pdf pg 10/79 at http://www.epa.gov/airmarkets/progsregs/epa-ipm/docs/SuppDoc410MATS.pdf D*I/10^6*K M*0.525*60/46*1.01/.99 N*1.13 0.56*(G*H)^0.43

Total Labor Cost

**Capital Cost Calculation (includes equipment, installation, buildings, foundations,electrical, minor physical/chemical ww treatment and retrofit difficulty)**See pdf pg 10/79 at http://www.epa.gov/airmarkets/progsregs/epa-ipm/docs/SuppDoc410MATS.pdf

This is not included in the S&L calculations, but should beequals K/80% based upon 8/10/12 email from Sargent & Lundy, and See pdf pg 10/79 at http://www.epa.gov/airmarkets/progsregs/epa-ipm/docs/SuppDoc410MATS.pdfhttp://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation The image part with relationship ID rId1 was not found in the file.

### Variable **Designation Units** 

Unique ID 126_4 Plant Sundt Unit 4 Unit Size A MW 173.3 Heat Rate C Btu/kwhr 10548 NOx Rate D lb/Mmbtu 0.445 CF I % 0.37 Type of fuel prb Coal Factor F 1.05 Retrofit Factor B 1 HR Factor G 1.0548 Heat Input H Btu/hr 1.83E+09
NOx Removal Eff J % 30% NOx Removed K lb/hr 2.44E+02 Urea rate (100%) L lb/hr 636.61 Water Required M lb/hr 5729 Aux. Power N % 0.05 Dilution water rate O (1000gph) 0.688 Urea Cost (50% sol) P $/ton 400 Aux Power Cost Q $/kwh 0.06 Dilution water Cost R $/Kgal 1 Operating Labor Rate S $/hr 60

**Includes equipment, inatallation,buildings,electrical, retrofit difficulty**

BMS ($) = 2870393 BMA ($) = BMB ($) = BM ($) = 2,870,393 BM ($/KW) = 17 **Total Project Cost** A1 = 5% of BM ($) = 143520 A2 = 5% of BM ($) = 143520 A3 = 5% of BM ($) = 143520 **CECC ($) =** 3,300,952**CECC ($/kw) =** 19

B1 = 5% of CECC 165,048 **TPC ($) =** 3,466,000 **TPC ($/kw) =** 20

**Fixed O&M Cost** FOMO ($/kw-yr) = 0.36007 FOMM ($/kw-yr) = 0.20

**FOM ($/kw-yr) =** 0.56
**Variable O&M Cost** VOMR ($/MWhr) = 1.47 VOMM ($/MWhr) = 0.0003 VOMP ($/MWhr)= Variable O&M Power 0.03 **VOM ($/MWhr) =** 1.50

CR = 9.44% Property Taxes and Insurance 1.20%

Total Charge Rate 10.64% **Cost of control - $/Ton**CF 37% Control Efficiency 30% **Uncontrolled Rate** NOx Rate (lb/hr) 813 NOx Rate (lb/MMBtu) 0.445

NOx (TPY) **1318 Controlled Rate**  NOx Rate (lb/hr) 569 NOx Rate (lb/MMBtu) 0.31

NOx (TPY) 923 **Tons/Year Removed 395**  **Total Cost/year** $1,308,000**$/Ton** $3,307

### Calculation

For Apache inlet NOx assumes LNB
PRB assumed for conservativeness Bit=1; PRB=1.05; Lig=1.07; gas=1 1 = typical retrofit C/10000 A*C*1000 30% - coal; 20% - gas D*H/10^6*j K/UF/46*30; For CFB and SO2>3 then UF=0.25; otherwise UF=0.15 L*9 M*0.12/1000 http://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation Note: Capital Cost equations were modified to be a constant $20/kWe because in my judgement S&L's scaling will result in overprediction of cost for small units
Total Labor Cost

SNCR APH (SO@> 3lb/Mmbtu); 65000*B*(A*G)^.78 BOP
Total base cost

Eng. and Construction management Labor adjustment Contractor profit/fees Cap., Eng. and management The image part with relationship ID rId1 was not found in the file.owners cost

**Total project cost It was assumed that SNCR capital cost was $20/kW for all applications** 

fixed O&M - additional labor cost fixed O&M - additional maintenace, mtl and labor cost

**Total Fixed O&M Cost**

Variable O&M - urea Variable O&M - dilution water This is not included in the S&L calculations, but should be
**Total Variable O&M Cost**

(lb/Mbtu*Heat Input)/1000000 Lb/hr*8760*CF/2000

TPC*CR+(FOM*MW)+VOM(MW*8760)*CFhttp://www.epa.gov/airmarkets/progsregs/epa-ipm/BaseCasev410.html#documentation Note: Capital Cost equations were modified to be a constant $20/kWe because in my judgement S&L's scaling will result in overprediction of cost for small unitsNote: Capital Cost equations were modified to be a constant $20/kWe because in my judgement S&L's scaling will result in overprediction of cost for small units**Sundt 4 SNCR**  **SCR**

CF 37% 37% Control Efficiency 30% 89% **Uncontrolled Rate** NOx Rate (lb/hr) 813 813 NOx Rate (lb/MMBtu) 0.445 0.445 NOx (TPY) 1318 1318 **Controlled Rate** NOx Rate (lb/hr) 569 91 NOx Rate (lb/MMBtu) 0.31 0.05 NOx (TPY) 923 148 Tons/Year Removed 395 1170 Total Cost/year $1,308,000 $5,712,715 $/Ton $3,307 $4,882 $/ton Incremental $3,307 $5,686

**Sundt 4 DSI**  **DFGD WFGD**  CF 37% 37% 37% Control Efficiency 75% 89% 92% **Uncontrolled Rate** SO2 Rate (lb/hr) 1333 1333 1333 SO2 Rate (lb/MMBtu) 0.729 0.729 0.729 SO2 (TPY) 2160 2160 2160 **Controlled Rate** SO2 Rate (lb/hr) 333 146 110 SO2 Rate (lb/MMBtu) 0.18 0.08 0.06 SO2 (TPY) 540 237 178 Tons/Year Removed 1620 1923 1982 Total Cost/year $2,967,501 $12,553,539 $13,986,681 $/Ton $1,832 $6,529 $7,057 $/ton Incremental $1,832 $31,647 $24,189