Chemical Lime Company Nelson Units 1 - 3

Table 2. Control Options (per EPA Region 9) and Corresponding Emission Reductions Relative to Base Used in Visibility Modeling 

All Units All Units

Controls

Technology 

Used

-Emissions 

(TPY, annual)

Technology 

Used

-Emissions 

(TPY, annual)

-Emissions 

(TPY, annual) $/year

Baghouse Base Case 0 0 0 $0

DLI Ctrl-1 DLS 232 DLS 739 971 $2,048,348

DSI w/ SBC Ctrl-2 SBC Inj. 348 SBC inj. 1109 1457 $1,430,417

Wet FGD Ctrl-3 Wet FGD 441 Wet FGD 1404 1845 $3,327,788

Wet FGD u.3 Ctrl-4 0 Wet FGD 1404 1404 $1,958,408

Wet FGD u.2 Ctrl-5 Wet FGD 441 0 441 $1,369,380

MAT Ctrl-6 MAT 139 MAT 443 582 $359,830

SNCR Ctrl-7 SNCR 187 SNCR 195 382 $451,644

LNB + SNCR Ctrl-8 LNB+SNCR 191 LNB+SNCR 199 390 $1,276,193

Table 3a. NOx Control Technologies for CLC Nelson Units 2-3 (from Andover Technology Partners Report Table 3-9a and 3-9b)

LNB SNCR LNB and SNCR LNB SNCR LNB and SNCR

TPD Lime 859 859 859 1,145 1,145 1,145

Uncontrolled NOx, lb/ton 2.66 2.66 2.66 2.08 2.08 2.08

PPH NOx 95 95 95 99 99 99

TPY NOx (90% capacity factor) 375 375 375 391 391 391

Reduction 30% 50% 51% 30% 50% 51%

Controlled NOx, lb/ton 1.86 1.33 1.3 1.46 1.04 1.02

PPH NOx 67 48 47 69 50 49

TPY NOx (90% capacity factor) 263 188 184 274 196 192

Capital Cost $2,389,443 $679,055 $3,068,499 $2,857,256 $806,849 $3,664,105

Total Annualized Cost $396,129 $216,179 $597,335 $459,000 $235,465 $678,858

$/ton removed $3,518 $1,152 $3,121 $3,911 $1,204 $3,403

incremental, $/ton removed $3,518 -$2,397* $2,553* $3,911 -$2,857* $2,676*

Table 3b. SO2 Control Technologies for CLC Nelson Plant Units 2-3 (from Andover Technology Partners Report Table 3-11)

MAT Dry Lime DSI with SBC Wet FGD MAT Dry Lime DSI with SBC Wet FGD

Historical SO2, lb/ton 3.29 3.29 3.29 3.29 7.87 7.87 7.87 7.87

Historical SO2, pph 118 118 118 118 375 375 375 375

Percent Removal 30% 50% 75% 95% 30% 50% 75% 95%

Outlet SO2, pph 82.4 58.9 29.4 5.9 262.5 187.5 93.8 18.8

Outlet SO2, lb/ton 2.3 1.65 0.82 0.16 5.51 3.94 1.97 0.39

% change in stack Velocity No Change No Change No Change -20% No Change No Change No Change -20%

Exit temp No Change No Change No Change 130 F No Change No Change No Change 130 F

Yes

FF plus scrubber

Capital Cost $754,196 $770,000 $409,382 8,082,077 $807,040 $1,940,000 $1,034,122 10,772,967

Annualized Costs $176,364 $545,415 $389,957 $1,369,380 $183,466 $1,502,933 $1,040,460 $1,958,408

TPY removed (90% capacity factor) 139 232 348 441 443 739 1109 1404

$/ton removed $1,266 $2,350 $1,120 $3,105 $414 $2,033 $938 $1,395

 Incremental $/ton $1,266 $3,975 ($1,340) $10,550 $414 $4,463 ($1,251) $3,105

Nelson Lime Units 2 and 3

visibility method 6, annual average background

Using dv from max impact area (9 areas)

Controls

Control 

Option

ton/yr 

reduction

cost, $/yr 

(millions)

$/ton 

reduction

visibility 

impact, dv 

visibility 

benefit, dv

$/dv 

(millions)

# CIAs w/ 

improvement 

≥ 0.5 dv

Baghouse Base Case 0 $0.0 1.2

DLI Ctrl-1 971 $2.0 $2,110 1.1 0.11 $18.5 0

DSI w/ SBC Ctrl-2 1457 $1.4 $982 1.0 0.17 $8.7 0

Wet FGD Ctrl-3 1845 $3.3 $1,804 1.1 0.10 $33.3 0

Wet FGD u.3 Ctrl-4 1404 $2.0 $1,395 1.1 0.07 $27.2 0

Wet FGD u.2 Ctrl-5 441 $1.4 $3,105 1.2 0.04 $38.0 0

MAT Ctrl-6 582 $0.4 $618 1.1 0.14 $2.6 0

SNCR Ctrl-7 382 $0.5 $1,182 1.0 0.23 $2.0 0

LNB + SNCR Ctrl-8 390 $1.3 $3,272 1.0 0.23 $5.5 0

(same tons & costs as above) Using dv sum over all areas (9 areas)

Controls

Control 

Option

ton/yr 

reduction

cost, $/yr 

(millions)

$/ton 

reduction

visibility 

impact, dv 

visibility 

benefit, dv

$/dv 

(millions)

Baghouse Base Case 0 $0.0 2.2

DLI Ctrl-1 971 $2.0 $2,110 1.8 0.39 $5.3

DSI w/ SBC Ctrl-2 1457 $1.4 $982 1.7 0.57 $2.5

Wet FGD Ctrl-3 1845 $3.3 $1,804 1.7 0.56 $5.9

Wet FGD u.3 Ctrl-4 1404 $2.0 $1,395 1.8 0.44 $4.4

Wet FGD u.2 Ctrl-5 441 $1.4 $3,105 2.0 0.20 $6.7

MAT Ctrl-6 582 $0.4 $618 2.0 0.21 $1.7

SNCR Ctrl-7 382 $0.5 $1,182 1.9 0.35 $1.3

LNB + SNCR Ctrl-8 390 $1.3 $3,272 1.9 0.35 $3.6

Controlled Emissions

Control Costs

*incremental cost compared to cost of LNB with 30% reduction since both of these provide roughly the same total NOx reduction

Control 

Option

Unit 2 Unit 3

Nelson Kiln 1 Nelson Kiln 2

Uncontrolled emissions

Nelson Kiln 1 Nelson Kiln 2

Impact on PM speciation No Change No Change No Change No Change No Change No ChangeYes, FF plus scrubber
Chemical Lime Company Nelson Units 2 and 3

visibility method 6, annual average background (this page edited from vis6.annav sheet)

Table 1(a). Visibility Impairment (98th Percentile) for 2001-2003 Base Case Emissions and Control Options

Base Case Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Base Case Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8

CIA Class I Area Baghouse DLI DSI w/ SBC Wet FGD Wet FGD u.3 Wet FGD u.2 MAT SNCR LNB + SNCR Baghouse DLI DSI w/ SBC Wet FGD Wet FGD u.3 Wet FGD u.2 MAT SNCR LNB + SNCR

brca Bryce Canyon 0.13 0.10 0.08 0.07 0.09 0.10 0.11 0.10 0.10 0.00 0.03 0.04 0.05 0.04 0.02 0.02 0.03 0.03

grca Grand Canyon 1.19 1.08 1.02 1.13 1.11 1.15 1.05 0.96 0.96 0.00 0.11 0.17 0.06 0.07 0.03 0.14 0.23 0.23

jotr Joshua Tree 0.16 0.11 0.09 0.08 0.10 0.13 0.15 0.15 0.15 0.00 0.05 0.07 0.08 0.06 0.03 0.01 0.01 0.01

maza Mazatzal 0.10 0.07 0.06 0.05 0.06 0.09 0.10 0.09 0.09 0.00 0.03 0.05 0.05 0.04 0.02 0.00 0.01 0.01

pimo Pine Mountain 0.10 0.07 0.05 0.05 0.06 0.08 0.09 0.09 0.09 0.00 0.03 0.04 0.05 0.04 0.01 0.00 0.00 0.00

sian Sierra Ancha 0.07 0.05 0.04 0.03 0.04 0.06 0.07 0.07 0.07 0.00 0.03 0.04 0.05 0.03 0.02 0.00 0.00 0.00

supe Superstition 0.10 0.06 0.05 0.04 0.05 0.08 0.10 0.09 0.09 0.00 0.03 0.05 0.06 0.04 0.02 0.00 0.00 0.00

syca Sycamore Canyon 0.19 0.14 0.12 0.09 0.12 0.16 0.18 0.17 0.17 0.00 0.05 0.08 0.10 0.07 0.04 0.02 0.03 0.03

zion Zion 0.19 0.16 0.15 0.13 0.15 0.17 0.17 0.16 0.16 0.00 0.03 0.04 0.06 0.04 0.02 0.02 0.03 0.03

Total 2.22 1.83 1.65 1.66 1.78 2.02 2.02 1.88 1.87 0.00 0.39 0.57 0.56 0.44 0.20 0.21 0.35 0.35

Max 1.19 1.08 1.02 1.13 1.11 1.15 1.05 0.96 0.96 0.00 0.11 0.17 0.10 0.07 0.04 0.14 0.23 0.23

# CIAs w/ -dv ≥ 0.5 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0

Table 5(a). Control Opon Cost Effecveness (million $/dv)†

Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8

CIA DLI DSI w/ SBC Wet FGD Wet FGD u.3 Wet FGD u.2 MAT SNCR LNB + SNCR

brca Bryce Canyon 79 35 64 49 62 21 16 44

grca Grand Canyon 18 9 57 27 41 3 2 6

jotr Joshua Tree 41 20 41 31 46 40 41 116

maza Mazatzal 60 30 62 49 86 90 45 128

pimo Pine Mountain 76 33 67 52 105 120 151 425

sian Sierra Ancha 79 37 72 58 91 180 113 319

supe Superstition 62 30 57 47 81 N/A 113 319

syca Sycamore Canyon 40 19 33 28 38 24 17 49

zion Zion 64 35 55 45 65 18 13 38

$/dv_sum 5.3 2.5 5.9 4.4 6.7 1.7 1.3 3.6 ($/yr) / (sum of dv benefits over all areas)

$/dv_max 18.5 8.7 33.3 27.2 38.0 2.6 2.0 5.5 ($/yr) / (max dv benefit of any area)

 Change relative to base (dv)

†$/dv = $ per year from Table 2 divided by visibility improvement from Table 1(a) for each control option, in millions

Class I Area

98th Percentile -dv

Number of Class I Areas with visibility impairment ≥ 0.5 dv Number of Class I Areas with visibility improvement ≥ 0.5 dv
Table 1(a). Visibility Impairment (98th Percentile) at Each Class I Area (CIA) Within Chemical Lime Company Nelson Plant's Zone of Influence (300 km) for 2001-2003 Base Case Emissions and Control Options (listed in Table 2)

CIA Table 2. Control Options (per EPA Region 9) and Corresponding Emission Reductions Relative to Base Used in Visibility Modeling 

All Units

Base Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Base Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Base Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Base Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 $/year

brca 0.101 0.082 0.075 0.070 0.078 0.088 0.088 0.079 0.079 0.019 0.026 0.031 0.023 0.013 0.013 0.022 0.022 0.102 0.090 0.083 0.078 0.085 0.094 0.093 0.090 0.089 0.012 0.019 0.024 0.017 0.008 0.009 0.012 0.013 0.147 0.103 0.088 0.073 0.088 0.126 0.133 0.120 0.119 0.044 0.059 0.074 0.059 0.021 0.014 0.027 0.028 0.125 0.099 0.084 0.073 0.085 0.103 0.108 0.097 0.026 0.041 0.052 0.040 0.022 0.017 0.028 0.029 SO2 NOx SO2 NOx SO2 NOx SO2+NOx

grca 0.807 0.760 0.719 0.929 0.899 0.856 0.732 0.683 0.680 0.047 0.088 -0.122 -0.092 -0.049 0.075 0.124 0.127 0.994 0.892 0.841 1.051 1.001 1.008 0.858 0.786 0.782 0.102 0.153 -0.057 -0.007 -0.014 0.136 0.208 0.212 1.454 1.358 1.314 1.439 1.454 1.477 1.336 1.255 1.251 0.096 0.140 0.015 0.000 -0.023 0.118 0.199 0.203 1.186 1.075 1.021 1.128 1.114 1.153 1.050 0.961 0.111 0.165 0.058 0.072 0.033 0.136 0.225 0.230 Base Case 0 0 0 0 0 0 $0

jotr 0.218 0.142 0.124 0.107 0.135 0.169 0.216 0.202 0.202 0.076 0.094 0.111 0.083 0.049 0.002 0.016 0.016 0.162 0.108 0.086 0.069 0.094 0.126 0.155 0.152 0.152 0.054 0.076 0.093 0.068 0.036 0.007 0.010 0.010 0.122 0.079 0.057 0.052 0.065 0.093 0.115 0.108 0.107 0.043 0.065 0.070 0.057 0.029 0.007 0.014 0.015 0.159 0.109 0.088 0.077 0.095 0.129 0.150 0.148 0.050 0.071 0.082 0.064 0.030 0.009 0.011 0.011 Ctrl-1 DLS 232 0 DLS 739 0 971 0 $2,048,348

maza 0.078 0.053 0.045 0.027 0.041 0.060 0.077 0.074 0.074 0.025 0.033 0.051 0.037 0.018 0.001 0.004 0.004 0.126 0.088 0.073 0.072 0.082 0.104 0.116 0.104 0.104 0.038 0.053 0.054 0.044 0.022 0.010 0.022 0.022 0.109 0.073 0.061 0.048 0.063 0.086 0.104 0.101 0.101 0.036 0.048 0.061 0.046 0.023 0.005 0.008 0.008 0.102 0.068 0.055 0.048 0.062 0.086 0.098 0.092 0.034 0.047 0.054 0.040 0.016 0.004 0.010 0.010 Ctrl-2 SBC Inj. 348 0 SBC inj. 1109 0 1457 0 $1,430,417

pimo 0.074 0.049 0.041 0.031 0.042 0.057 0.073 0.072 0.072 0.025 0.033 0.043 0.032 0.017 0.001 0.002 0.002 0.113 0.084 0.058 0.053 0.063 0.099 0.102 0.094 0.093 0.029 0.055 0.060 0.050 0.014 0.011 0.019 0.020 0.104 0.080 0.072 0.053 0.073 0.091 0.101 0.097 0.097 0.024 0.032 0.051 0.031 0.013 0.003 0.007 0.007 0.096 0.069 0.052 0.046 0.058 0.083 0.093 0.093 0.027 0.044 0.050 0.038 0.013 0.003 0.003 0.003 Ctrl-3 Wet FGD 441 0 Wet FGD 1404 0 1845 0 $3,327,788

sian 0.052 0.034 0.020 0.013 0.024 0.039 0.051 0.051 0.051 0.018 0.032 0.039 0.028 0.013 0.001 0.001 0.001 0.091 0.060 0.039 0.032 0.047 0.071 0.082 0.075 0.074 0.031 0.052 0.059 0.044 0.020 0.009 0.016 0.017 0.084 0.048 0.035 0.034 0.041 0.064 0.081 0.081 0.081 0.036 0.049 0.050 0.043 0.020 0.003 0.003 0.003 0.074 0.048 0.035 0.028 0.040 0.059 0.072 0.070 0.026 0.039 0.046 0.034 0.015 0.002 0.004 0.004 Ctrl-4 0 0 Wet FGD 1404 0 1404 0 $1,958,408

supe 0.063 0.041 0.029 0.018 0.033 0.050 0.061 0.060 0.060 0.022 0.034 0.045 0.030 0.013 0.002 0.003 0.003 0.114 0.082 0.065 0.058 0.072 0.095 0.108 0.103 0.103 0.032 0.049 0.056 0.042 0.019 0.006 0.011 0.011 0.099 0.063 0.048 0.038 0.056 0.076 0.096 0.096 0.096 0.036 0.051 0.061 0.043 0.023 0.003 0.003 0.003 0.096 0.063 0.048 0.038 0.054 0.079 0.096 0.092 0.033 0.048 0.058 0.042 0.017 0.000 0.004 0.004 Ctrl-5 Wet FGD 441 0 0 0 441 0 $1,369,380

syca 0.145 0.107 0.097 0.077 0.093 0.116 0.140 0.130 0.129 0.038 0.048 0.068 0.052 0.029 0.005 0.015 0.016 0.193 0.143 0.115 0.090 0.118 0.163 0.180 0.167 0.167 0.050 0.078 0.103 0.075 0.030 0.013 0.026 0.026 0.231 0.172 0.141 0.107 0.141 0.199 0.221 0.215 0.215 0.059 0.090 0.124 0.090 0.032 0.010 0.016 0.016 0.193 0.142 0.116 0.093 0.123 0.157 0.178 0.167 0.051 0.077 0.100 0.070 0.036 0.015 0.026 0.026 Ctrl-6 MAT 139 0 MAT 443 0 582 0 $359,830

zion 0.192 0.144 0.120 0.109 0.133 0.165 0.172 0.158 0.158 0.048 0.072 0.083 0.059 0.027 0.020 0.034 0.034 0.176 0.159 0.143 0.127 0.135 0.166 0.165 0.149 0.148 0.017 0.033 0.049 0.041 0.010 0.011 0.027 0.028 0.201 0.174 0.160 0.138 0.165 0.184 0.176 0.172 0.171 0.027 0.041 0.063 0.036 0.017 0.025 0.029 0.030 0.192 0.160 0.151 0.132 0.148 0.171 0.172 0.158 0.032 0.041 0.060 0.044 0.021 0.020 0.034 0.034 Ctrl-7 SNCR 0 187 SNCR 0 195 0 382 $451,644

Ctrl-8 LNB+SNCR 0 191 LNB+SNCR 0 199 0 390 $1,276,193

Table 3a. NOx Control Technologies for CLC Nelson Plant Units 2-3 (from Andover Technology Partners Report Table 3-9)

LNB SNCR LNB and SNCR LNB SNCR LNB and SNCR

TPD Lime 859 859 859 1,145 1,145 1,145

Uncontrolled NOx, lb/ton 2.66 2.66 2.66 2.08 2.08 2.08

PPH NOx 95 95 95 99 99 99

TPY NOx (90% capacity factor) 375 375 375 391 391 391

Reduction 30% 50% 51% 30% 50% 51%

Controlled NOx, lb/ton 1.86 1.33 1.3 1.46 1.04 1.02

PPH NOx 67 48 47 69 50 49

TPY NOx (90% capacity factor) 263 188 184 274 196 192

Capital Cost $2,389,443 $679,055 $3,068,499 $2,857,256 $806,849 $3,664,105

Total Annualized Cost $396,129 $216,179 $597,335 $459,000 $235,465 $678,858

$/ton removed $3,518 $1,152 $3,121 $3,911 $1,204 $3,403

incremental, $/ton removed $3,518 -$2,397* $2,553* $3,911 -$2,857* $2,676*

Table 3b. SO2 Control Technologies for CLC Nelson Plant Units 2-3 (from Andover Technology Partners Report Table 3-11)

MAT Dry Lime DSI with SBC Wet FGD MAT Dry Lime DSI with SBC Wet FGD

Historical SO2, lb/ton 3.29 3.29 3.29 3.29 7.87 7.87 7.87 7.87

Historical SO2, pph 118 118 118 118 375 375 375 375

Percent Removal 30% 50% 75% 95% 30% 50% 75% 95%

Outlet SO2, pph 82.4 58.9 29.4 5.9 262.5 187.5 93.8 18.8

Outlet SO2, lb/ton 2.3 1.65 0.82 0.16 5.51 3.94 1.97 0.39

% change in stack Velocity No Change No Change No Change -20% No Change No Change No Change -20%

Exit temp No Change No Change No Change 130 F No Change No Change No Change 130 F

Yes

FF plus scrubber

Capital Cost $754,196 $770,000 $409,382 8,082,077 $807,040 $1,940,000 $1,034,122 10,772,967

Annualized Costs $176,364 $545,415 $389,957 $1,369,380 $183,466 $1,502,933 $1,040,460 $1,958,408

TPY removed (90% capacity factor) 139 232 348 441 443 739 1109 1404

$/ton removed $1,266 $2,350 $1,120 $3,105 $414 $2,033 $938 $1,395

 Incremental $/ton $1,266 $3,975 ($1,340) $10,550 $414 $4,463 ($1,251) $3,105

Control Option

Control Control

Nelson Kiln 1 Nelson Kiln 2

-Emis (TPY)

All Units Unit 3

-Emis (TPY)

Unit 2

-Emis (TPY)

98th Percentile -dv Change relative to base (dv) 98th Percentile -dv Change relative to base (dv)

*incremental cost compared to cost of LNB with 30% reduction since both of these provide roughly the same total NOx reduction

Uncontrolled emissions

Controlled Emissions

Control Costs

Nelson Kiln 1 Nelson Kiln 2

Impact on PM speciation No Change No Change No Change No Change No Change No ChangeYes, FF plus scrubber

2001-2003

98th Percentile -dv Change relative to base (dv)

2001 2002

98th Percentile -dv Change relative to base (dv)

2003
Chemical Lime Company Nelson Units 1 - 3

Table 2. Control Options (per EPA Region 9) and Corresponding Emission Reductions Relative to Base Used in Visibility Modeling 

All Units All Units

Controls

Technology 

Used

-Emissions 

(TPY, annual)

Technology 

Used

-Emissions 

(TPY, annual)

-Emissions 

(TPY, annual) $/year

Baghouse Base Case 0 0 0 $0

DLI Ctrl-1 DLS 232 DLS 739 971 $2,048,348

DSI w/ SBC Ctrl-2 SBC Inj. 348 SBC inj. 1109 1457 $1,430,417

Wet FGD Ctrl-3 Wet FGD 441 Wet FGD 1404 1845 $3,327,788

Wet FGD u.3 Ctrl-4 0 Wet FGD 1404 1404 $1,958,408

Wet FGD u.2 Ctrl-5 Wet FGD 441 0 441 $1,369,380

MAT Ctrl-6 MAT 139 MAT 443 582 $359,830

SNCR Ctrl-7 SNCR 187 SNCR 195 382 $451,644

LNB + SNCR Ctrl-8 LNB+SNCR 191 LNB+SNCR 199 390 $1,276,193

Table 3. NOx Control Technologies for CLC Nelson Units 2-3 (from Andover Technology Partners Report Table 3-9a and 3-9b)

LNB SNCR LNB and SNCR LNB SNCR LNB and SNCR

TPD Lime 859 859 859 1,145 1,145 1,145

Uncontrolled NOx, lb/ton 2.66 2.66 2.66 2.08 2.08 2.08

PPH NOx 95 95 95 99 99 99

TPY NOx (90% capacity factor) 375 375 375 391 391 391

Reduction 30% 50% 51% 30% 50% 51%

Controlled NOx, lb/ton 1.86 1.33 1.3 1.46 1.04 1.02

PPH NOx 67 48 47 69 50 49

TPY NOx (90% capacity factor) 263 188 184 274 196 192

Capital Cost $2,389,443 $679,055 $3,068,499 $2,857,256 $806,849 $3,664,105

Total Annualized Cost $396,129 $216,179 $597,335 $459,000 $235,465 $678,858

$/ton removed $3,518 $1,152 $3,121 $3,911 $1,204 $3,403

incremental, $/ton removed $3,518 -$2,397* $2,553* $3,911 -$2,857* $2,676*

Table 3b. SO2 Control Technologies for CLC Nelson Plant Units 2-3 (from Andover Technology Partners Report Table 3-11)

MAT Dry Lime DSI with SBC Wet FGD MAT Dry Lime DSI with SBC Wet FGD

Historical SO2, lb/ton 3.29 3.29 3.29 3.29 7.87 7.87 7.87 7.87

Historical SO2, pph 118 118 118 118 375 375 375 375

Percent Removal 30% 50% 75% 95% 30% 50% 75% 95%

Outlet SO2, pph 82.4 58.9 29.4 5.9 262.5 187.5 93.8 18.8

Outlet SO2, lb/ton 2.3 1.65 0.82 0.16 5.51 3.94 1.97 0.39

% change in stack Velocity No Change No Change No Change -20% No Change No Change No Change -20%

Exit temp No Change No Change No Change 130 F No Change No Change No Change 130 F

Yes

FF plus scrubber

Capital Cost $754,196 $770,000 $409,382 8,082,077 $807,040 $1,940,000 $1,034,122 10,772,967

Annualized Costs $176,364 $545,415 $389,957 $1,369,380 $183,466 $1,502,933 $1,040,460 $1,958,408

TPY removed (90% capacity factor) 139 232 348 441 443 739 1109 1404

$/ton removed $1,266 $2,350 $1,120 $3,105 $414 $2,033 $938 $1,395

 Incremental $/ton $1,266 $3,975 ($1,340) $10,550 $414 $4,463 ($1,251) $3,105

Nelson Lime Units 2 and 3

visibility method 8, 20% best background

Using dv from max impact area (9 CIAs)

Controls

Control 

Option ton/yr 

reduction

cost, $/yr 

(millions)

$/ton 

reduction

visibility 

impact, dv 

visibility 

benefit, dv

$/dv 

(millions)

# CIAs w/ 

improvement 

≥ 0.5 dv

Baghouse Base Case 0 $0.0 1.6

DLI Ctrl-1 971 $2.0 $2,110 1.5 0.13 $15.4 0

DSI w/ SBC Ctrl-2 1457 $1.4 $982 1.4 0.21 $6.9 0

Wet FGD Ctrl-3 1845 $3.3 $1,804 1.6 0.10 $34.0 0

Wet FGD u.3 Ctrl-4 1404 $2.0 $1,395 1.5 0.08 $26.1 0

Wet FGD u.2 Ctrl-5 441 $1.4 $3,105 1.6 0.04 $39.1 0

MAT Ctrl-6 582 $0.4 $618 1.4 0.18 $2.0 0

SNCR Ctrl-7 382 $0.5 $1,182 1.3 0.31 $1.5 0

LNB + SNCR Ctrl-8 390 $1.3 $3,272 1.3 0.32 $4.0 0

(same tons & costs as above) Using dv sum over all areas (9 CIAs)

Controls

Control 

Option

ton/yr 

reduction

cost, $/yr 

(millions)

$/ton 

reduction

visibility 

impact, dv 

visibility 

benefit, dv

$/dv 

(millions)

Baghouse Base Case 0 $0.0 2.8

DLI Ctrl-1 971 $2.0 $2,110 2.4 0.44 $4.7

DSI w/ SBC Ctrl-2 1457 $1.4 $982 2.2 0.64 $2.2

Wet FGD Ctrl-3 1845 $3.3 $1,804 2.2 0.58 $5.7

Wet FGD u.3 Ctrl-4 1404 $2.0 $1,395 2.3 0.48 $4.1

Wet FGD u.2 Ctrl-5 441 $1.4 $3,105 2.6 0.23 $6.0

MAT Ctrl-6 582 $0.4 $618 2.5 0.29 $1.2

SNCR Ctrl-7 382 $0.5 $1,182 2.3 0.48 $0.9

LNB + SNCR Ctrl-8 390 $1.3 $3,272 2.3 0.49 $2.6

Controlled Emissions

Control Costs

*incremental cost compared to cost of LNB with 30% reduction since both of these provide roughly the same total NOx reduction

Control 

Option

Unit 2 Unit 3

Nelson Kiln 1 Nelson Kiln 2

Uncontrolled emissions

Nelson Kiln 1 Nelson Kiln 2

Impact on PM speciation No Change No Change No Change No Change No Change No ChangeYes, FF plus scrubber
Chemical Lime Company Nelson Units 2 and 3

visibility method 8, 20% best background (this page edited from vis8.20best sheet)

Table 1(b). Visibility Impairment (98th Percentile) for 2001-2003 Base Case Emissions and Control Options

Base Case Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Base Case Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8

CIA Class I Area Baghouse DLI DSI w/ SBC Wet FGD Wet FGD u.3 Wet FGD u.2 MAT SNCR LNB + SNCR Baghouse DLI SBC Wet FGD u.3 Wet FGD u.2 MAT SNCR LNB + SNCR

brca Bryce Canyon 0.17 0.13 0.11 0.10 0.12 0.14 0.15 0.13 0.13 0.00 0.04 0.06 0.07 0.05 0.03 0.02 0.04 0.04

grca Grand Canyon 1.61 1.48 1.40 1.56 1.54 1.58 1.43 1.30 1.29 0.00 0.13 0.21 0.05 0.08 0.03 0.18 0.31 0.32

jotr Joshua Tree 0.18 0.13 0.10 0.09 0.11 0.15 0.17 0.17 0.16 0.00 0.05 0.08 0.09 0.07 0.03 0.01 0.01 0.02

maza Mazatzal 0.11 0.08 0.06 0.06 0.07 0.09 0.10 0.10 0.10 0.00 0.03 0.05 0.05 0.04 0.02 0.01 0.01 0.01

pimo Pine Mountain 0.11 0.08 0.06 0.06 0.06 0.09 0.10 0.10 0.10 0.00 0.03 0.05 0.05 0.05 0.02 0.01 0.01 0.01

sian Sierra Ancha 0.08 0.05 0.04 0.03 0.04 0.06 0.08 0.07 0.07 0.00 0.03 0.04 0.05 0.03 0.02 0.00 0.01 0.01

supe Superstition 0.10 0.06 0.05 0.04 0.06 0.08 0.10 0.09 0.09 0.00 0.04 0.05 0.06 0.05 0.02 0.01 0.01 0.01

syca Sycamore Canyon 0.21 0.16 0.14 0.11 0.14 0.17 0.19 0.17 0.17 0.00 0.05 0.07 0.10 0.07 0.04 0.02 0.04 0.04

zion Zion 0.23 0.19 0.18 0.16 0.18 0.20 0.20 0.18 0.18 0.00 0.04 0.05 0.07 0.05 0.03 0.03 0.05 0.05

Total 2.79 2.35 2.15 2.21 2.31 2.56 2.50 2.32 2.31 0.44 0.64 0.58 0.48 0.23 0.29 0.48 0.49

Max 1.61 1.48 1.40 1.56 1.54 1.58 1.43 1.30 1.29 0.13 0.21 0.10 0.08 0.04 0.18 0.31 0.32

# CIAs with dv ≥ 0.5 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0

Table 5(b). Control Opon Cost Effecveness (million $/dv)†

Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8

CIA DLI DSI w/ SBC Wet FGD Wet FGD u.3 Wet FGD u.2 MAT SNCR LNB + SNCR

brca Bryce Canyon 55 26 48 36 47 15 12 33

grca Grand Canyon 15 7 67 26 41 2 1 4

jotr Joshua Tree 39 19 39 29 47 36 32 85

maza Mazatzal 64 31 62 50 68 45 45 128

pimo Pine Mountain 62 28 62 44 72 45 56 160

sian Sierra Ancha 73 38 72 58 91 120 90 255

supe Superstition 55 30 56 44 62 60 56 160

syca Sycamore Canyon 40 20 34 28 39 17 13 35

zion Zion 57 31 49 39 55 12 10 27

$/dv_sum 4.7 2.2 5.7 4.1 6.0 1.2 0.9 2.6 ($/yr) / (sum of dv benefits over all areas)

$/dv_max 15.4 6.9 34.0 26.1 39.1 2.0 1.5 4.0 ($/yr) / (max dv benefit of any area)

Class I Area

Number of Class I Areas with visibility improvement ≥ 0.5 dv

 Change relative to Base (dv)

Number of Class I Areas with visibility impact ≥ 0.5 dv

98th Percentile -dv

†$/dv = $ per year from Table 2 divided by visibility improvement from Table 1(d) for each control option, in millions
CIA

Base Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6

brca 0.134 0.111 0.102 0.095 0.104 0.117 0.116

grca 1.100 1.038 0.994 1.247 1.215 1.157 0.993

jotr 0.239 0.164 0.144 0.124 0.156 0.186 0.235

maza 0.083 0.060 0.051 0.031 0.046 0.067 0.078

pimo 0.079 0.055 0.046 0.037 0.048 0.063 0.076

sian 0.051 0.035 0.022 0.015 0.025 0.043 0.051

supe 0.068 0.041 0.030 0.020 0.035 0.052 0.061

syca 0.168 0.136 0.126 0.101 0.125 0.144 0.141

zion 0.220 0.168 0.142 0.130 0.156 0.191 0.196

Table 1(d). Visibility Impairment (98th Percentile) at Each Class I Area (CIA) Within Chemical Lime Company Nelson

98th Percentile -dv 
Ctrl-7 Ctrl-8 Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5 Ctrl-6

0.104 0.104 0.023 0.032 0.039 0.030 0.017 0.018

0.924 0.921 0.062 0.106 -0.147 -0.115 -0.057 0.107

0.233 0.233 0.075 0.095 0.115 0.083 0.053 0.004

0.077 0.076 0.023 0.032 0.052 0.037 0.016 0.005

0.075 0.075 0.024 0.033 0.042 0.031 0.016 0.003

0.051 0.051 0.016 0.029 0.036 0.026 0.008 0.000

0.059 0.059 0.027 0.038 0.048 0.033 0.016 0.007

0.122 0.122 0.032 0.042 0.067 0.043 0.024 0.027

0.180 0.179 0.052 0.078 0.090 0.064 0.029 0.024

n Chemical Lime Company Nelson's Zone of Influence (300 km) for 2001-2003 Base Case Emissions and Control Options

2001

 Change relative to base (dv)
Ctrl-7 Ctrl-8 Base Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5

0.030 0.030 0.137 0.121 0.111 0.106 0.115 0.127

0.176 0.179 1.356 1.229 1.140 1.317 1.317 1.341

0.006 0.006 0.180 0.127 0.098 0.080 0.108 0.147

0.006 0.007 0.139 0.099 0.083 0.083 0.093 0.116

0.004 0.004 0.130 0.092 0.067 0.062 0.072 0.114

0.000 0.000 0.098 0.061 0.044 0.035 0.054 0.075

0.009 0.009 0.118 0.087 0.070 0.065 0.077 0.101

0.046 0.046 0.192 0.147 0.135 0.111 0.133 0.171

0.040 0.041 0.207 0.188 0.170 0.151 0.159 0.194

ions and Control Options (listed in Table 2)

98th Percentile -dv 
Ctrl-6 Ctrl-7 Ctrl-8 Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4 Ctrl-5

0.117 0.112 0.112 0.016 0.026 0.031 0.022 0.010

1.165 1.035 1.029 0.127 0.216 0.039 0.039 0.015

0.174 0.165 0.165 0.053 0.082 0.100 0.072 0.033

0.129 0.120 0.119 0.040 0.056 0.056 0.046 0.023

0.116 0.107 0.106 0.038 0.063 0.068 0.058 0.016

0.090 0.084 0.083 0.037 0.054 0.063 0.044 0.023

0.113 0.108 0.107 0.031 0.048 0.053 0.041 0.017

0.180 0.173 0.173 0.045 0.057 0.081 0.059 0.021

0.180 0.171 0.170 0.019 0.037 0.056 0.048 0.013

2002

 Change relative to base (dv)
Ctrl-6 Ctrl-7 Ctrl-8 Base Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4

0.020 0.025 0.025 0.195 0.133 0.122 0.100 0.122

0.191 0.321 0.327 1.970 1.819 1.767 1.937 1.933

0.006 0.015 0.015 0.132 0.086 0.065 0.060 0.075

0.010 0.019 0.020 0.118 0.083 0.068 0.057 0.071

0.014 0.023 0.024 0.113 0.093 0.083 0.062 0.086

0.008 0.014 0.015 0.088 0.050 0.040 0.039 0.047

0.005 0.010 0.011 0.101 0.068 0.053 0.042 0.061

0.012 0.019 0.019 0.263 0.189 0.159 0.116 0.162

0.027 0.036 0.037 0.233 0.204 0.189 0.163 0.193

ve to base (dv) 98th Percentile 
Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Ctrl-1 Ctrl-2 Ctrl-3 Ctrl-4

0.167 0.170 0.160 0.159 0.062 0.073 0.095 0.073

2.011 1.808 1.697 1.692 0.151 0.203 0.033 0.037

0.106 0.132 0.126 0.126 0.046 0.067 0.072 0.057

0.097 0.116 0.112 0.112 0.035 0.050 0.061 0.047

0.105 0.106 0.106 0.106 0.020 0.030 0.051 0.027

0.067 0.083 0.083 0.083 0.038 0.048 0.049 0.041

0.076 0.096 0.096 0.096 0.033 0.048 0.059 0.040

0.210 0.239 0.223 0.223 0.074 0.104 0.147 0.101

0.214 0.201 0.190 0.190 0.029 0.044 0.070 0.040

2003

-dv Change relative to base (dv)
Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Base Ctrl-1 Ctrl-2 Ctrl-3

0.028 0.025 0.035 0.036 0.169 0.132 0.114 0.100

-0.041 0.162 0.273 0.278 1.611 1.478 1.404 1.561

0.026 0.000 0.006 0.006 0.179 0.127 0.104 0.093

0.021 0.002 0.006 0.006 0.110 0.078 0.064 0.056

0.008 0.007 0.007 0.007 0.109 0.076 0.057 0.055

0.021 0.005 0.005 0.005 0.078 0.050 0.040 0.032

0.025 0.005 0.005 0.005 0.101 0.064 0.053 0.042

0.053 0.024 0.040 0.040 0.209 0.158 0.139 0.111

0.019 0.032 0.043 0.043 0.225 0.189 0.179 0.157

ange relative to base (dv) 98th Percentile 
Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8 Ctrl-1 Ctrl-2 Ctrl-3

0.115 0.140 0.145 0.130 0.130 0.037 0.055 0.069

1.536 1.578 1.429 1.301 1.293 0.133 0.207 0.050

0.112 0.150 0.169 0.165 0.164 0.052 0.075 0.086

0.071 0.090 0.102 0.100 0.100 0.032 0.046 0.054

0.064 0.090 0.101 0.101 0.101 0.033 0.052 0.054

0.044 0.063 0.075 0.073 0.073 0.028 0.038 0.046

0.056 0.079 0.095 0.093 0.093 0.037 0.048 0.059

0.139 0.174 0.188 0.173 0.173 0.051 0.070 0.098

0.175 0.200 0.196 0.179 0.178 0.036 0.046 0.068

2001-2003

98th Percentile -dv Change relative to base 
Ctrl-4 Ctrl-5 Ctrl-6 Ctrl-7 Ctrl-8

0.054 0.029 0.024 0.039 0.039

0.075 0.033 0.182 0.310 0.318

0.067 0.029 0.010 0.014 0.015

0.039 0.020 0.008 0.010 0.010

0.045 0.019 0.008 0.008 0.008

0.034 0.015 0.003 0.005 0.005

0.045 0.022 0.006 0.008 0.008

0.070 0.035 0.021 0.036 0.036

0.050 0.025 0.029 0.046 0.047

 Change relative to base (dv)
lookup tables includes areas for: TEP Sundt, Catalyst Paper/Snowflake, Chemical Lime Nelson, AEPCO Apache, APS Cholla, SRP Coronado

CLC Nelson Control scenarios Class I areas

scenarios unit 2 unit 3 short abbr Class I area Class I area, medium Class I area, long state

Base Case Baghouse band Bandelier Bandelier NM Bandelier NM NM

Ctrl-1 DLI DLI DLI brca Bryce Canyon Bryce Canyon NP Bryce Canyon NP UT

Ctrl-2 SBC Inj SBC Inj DSI w/ SBC care Capitol Reef Capitol Reef NP Capitol Reef NP UT

Ctrl-3 Wet FGD Wet FGD Wet FGD chir Chiricahua NM Chiricahua NM Chiricahua NM AZ

Ctrl-4 Wet FGD Wet FGD u.3 chrw Chiricahua Chiricahua Wild. Chiricahua Wilderness AZ

Ctrl-5 Wet FGD Wet FGD u.2 gali Galiuro Galiuro Wild. Galiuro Wilderness AZ

Ctrl-6 MAT MAT MAT gila Gila Gila Wild. Gila Wilderness NM

Ctrl-7 SNCR SNCR SNCR grca Grand Canyon Grand Canyon NP Grand Canyon NP AZ

Ctrl-8 LNB/SNCR LNB/SNCR LNB + SNCR jotr Joshua Tree Joshua Tree NP Joshua Tree NP CA

maza Mazatzal Mazatzal Wild. Mazatzal Wilderness AZ

meve Mesa Verde Mesa Verde NP Mesa Verde NP CO

moba Mount Baldy Mount Baldy Wild. Mount Baldy Wilderness AZ

pefo Petrified Forest Petrified Forest NP Petrified Forest NP AZ

pimo Pine Mountain Pine Mountain Wild. Pine Mountain Wilderness AZ

sagu Saguaro Saguaro NP Saguaro NP AZ

sape San Pedro Parks San Pedro Parks Wild. San Pedro Parks Wilderness NM

sian Sierra Ancha Sierra Ancha Wild. Sierra Ancha Wilderness AZ

supe Superstition Superstition Wild. Superstition Wilderness AZ

syca Sycamore Canyon Sycamore Canyon Wild. Sycamore Canyon Wilderness AZ

zion Zion Zion NP Zion NP UT