### Cholla Unit 1

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

Controls **Technology Used****-Emissions (TPY, max day)**  **$/year**
**Base Case Base**  **LNB+SOFA** 0 $0 **SNCR u.1 + BART Ctrl2-1**  **SNCR+LNB+SOFA** 309 $999,045 **SCR u.1 + BART Ctrl2-2**  **SCR+LNB+SOFA** 797$4,237,867 **Rev Base+FFSpec Rev Base-2** **LNB+SOFA; FFSpec** 0 $0 **SNCR u.1 Ctrl2-3**  **SNCR+LNB+SOFA** 309 $999,045 **SCR u.1 Ctrl2-4**  **SCR+LNB+SOFA** 797$4,237,867
**Table 3(b). NOx Control Technologies for Cholla Unit 1**(from Andover Technology Partners Report Table 5-10) version 9/19/12

**SNCR SCR**  Capacity Factor 86% 86% Control Efficiency 30% 77%* **Uncontrolled Rate** NOx Rate (lb/hr) 274 274 NOx Rate (lb/MMBtu) 0.22 0.22 NOx (TPY) 1032 1032 **Controlled Rate** NOx Rate (lb/hr) 192 62 NOx Rate (lb/MMBtu) 0.15 0.05 NOx (TPY) 723 235

**Tons/Year Removed** 310 798

**Total Cost, $/year** $999,045 $4,237,867 **$/Ton** $3,226 $5,313 **$/Ton (incremental)** $3,226 $6,638



### Cholla Unit 1visibility method 6, annual average background Using dv from max impact area (13 areas)

Controls **Control**

**Option ton/yr reduction** **cost, $/yr (millions)**  **$/ton**

**reduction visibility** 

**impact, dv visibility** 

**benefit, dv $/dv (millions)** # areas w/ improvement ≥ 0.5 dv **Base Case Base**  0 $0.0 2.85 **SNCR u.1 + BART Ctrl2-1**  309 $1.0 $3,233 2.79 0.06 $17 0 **SCR u.1 + BART Ctrl2-2**  797 $4.2 $5,317 2.70 0.14 $29 0 **Rev Base+FFSpec Rev Base-2**  0 $0.0 3.85 **SNCR u.1 Ctrl2-3**  309 $1.0 $3,233 3.73 0.12 $9 0 **SCR u.1 Ctrl2-4**  797 $4.2 $5,317 3.63 0.22 $19 0 (same tons & costs as above) Using dv sum over all areas (13 areas)

Controls **Control**

**Option ton/yr reduction** **cost, $/yr (millions)**  **$/ton**

**reduction visibility** 

**impact, dv visibility** 

**benefit, dv $/dv (millions)**  **Base Case Base**  0 $0.0 9.79 **SNCR u.1 + BART Ctrl2-1**  309 $1.0 $3,233 9.55 0.23 $4.3 **SCR u.1 + BART Ctrl2-2**  797 $4.2 $5,317 9.24 0.55 $7.7 **Rev Base+FFSpec Rev Base-2**  0 $0.0 15.41 **SNCR u.1 Ctrl2-3**  309 $1.0 $3,233 15.07 0.35 $2.9 **Cholla 1 – NOx Unit 1** 

* SCR is actually capable of 90% removal. The model that we used set a lower limit of 0.05 lb/MMBtu, but lower NOx levels should be achievable

**Control Option** **SCR u.1 Ctrl2-4**  797 $4.2 $5,317 14.67 0.74 $5.7Cholla Unit 1

visibility method 6, annual average background (this page edited from vis6.annav sheet) **Table 1(a). Visibility Impairment (98** **th Percentile) for 2001-2003 Base Case Emissions and Control Options**  **Change relative to base (dv)** Base Ctrl2-1 Ctrl2-2 Rev Base-2 Ctrl2-3 Ctrl2-4 Base Rev Base-2 Ctrl2-1 CIA**Class I Area** Base CaseSNCR u.1 + BART SCR u.1 +

BART Rev

Base+FFSpecSNCR u.1 SCR u.1 Base Case Rev Base+FFSpecSNCR u.1 +

BART

careCapitol Reef 0.56 0.54 0.51 1.15 1.11 1.09 0.00 0.00 0.02 galiGaliuro 0.28 0.28 0.28 0.42 0.42 0.41 0.00 0.00 0.00 gilaGila 0.42 0.42 0.40 0.56 0.55 0.55 0.00 0.00 0.00 grcaGrand Canyon 0.90 0.87 0.79 1.71 1.66 1.61 0.00 0.00 0.04
mazaMazatzal 0.73 0.71 0.70 1.10 1.09 1.06 0.00 0.00 0.03
meveMesa Verde 0.48 0.46 0.44 0.93 0.90 0.89 0.00 0.00 0.02
mobaMount Baldy 0.57 0.56 0.56 0.92 0.91 0.91 0.00 0.00 0.01 pefoPetrified Forest **2.85** 2.79 2.70 3.85 3.73 3.63 0.00 0.00 0.06 pimoPine Mountain 0.51 0.50 0.49 0.78 0.76 0.73 0.00 0.00 0.01 saguSaguaro 0.23 0.23 0.23 0.29 0.29 0.29 0.00 0.00 0.00 sianSierra Ancha 0.80 0.79 0.77 1.27 1.25 1.21 0.00 0.00 0.01 supeSuperstition 0.76 0.75 0.73 1.21 1.21 1.18 0.00 0.00 0.02 sycaSycamore Canyon 0.69 0.68 0.66 1.23 1.19 1.13 0.00 0.00 0.01 **Total** 9.79 9.55 9.24 15.41 15.07 14.67 0.23 **Max** 2.85 2.79 2.70 3.85 3.73 3.63 0.06 **# CIAs w.****-dv >0.5** 9 8 8 11 11 11 0

**Ta ble 5(a). Control Opon Cost E** **ffecveness (million $/dv)†** Ctrl2-1 Ctrl2-2 Ctrl2-3 Ctrl2-4
CIA SNCR u.1 + BART SCR u.1 +

BART SNCR u.1 SCR u.1

careCapitol Reef 40 77 22 63 galiGaliuro 250 848 N/A 424 gilaGila 333 249 125 326 grcaGrand Canyon 29 37 19 39

mazaMazatzal 38 121 77 109

meveMesa Verde 45 109 37 115 mobaMount Baldy 143 424 333 471 pefoPetrified Forest 17 29 9 19 pimoPine Mountain 77 193 50 90 saguSaguaro N/A 1059 N/A 706 sianSierra Ancha 83 146 45 74 supeSuperstition 62 121 999 128 sycaSycamore Canyon 83 118 27 44 **$/dv_sum** 4.3 7.7 2.9 5.7 ($/yr) / (sum of dv benefits over all areas) **$/dv_max** 17.2 29.4 8.6 19.4 ($/yr) / (max dv benefit of any area)

†$/dv = $ per year from Table 3 divided by delta dv from Table 1(a) for each control option, in millions

**Class I Area 98** **th Percentile** **-dv**

Number of Class I Areas with visibility improvementCtrl2-2 Ctrl2-3 Ctrl2-4

SCR u.1 + BART SNCR u.1 SCR u.1 0.05 0.04 0.07 0.00 0.00 0.01 0.02 0.01 0.01 0.12 0.05 0.11 0.04 0.01 0.04 0.04 0.03 0.04 0.01 0.00 0.01 0.14 0.12 0.22 0.02 0.02 0.05 0.00 0.00 0.01 0.03 0.02 0.06 0.04 0.00 0.03 0.04 0.04 0.10 0.55 0.35 0.74 0.14 0.12 0.22 0 0 0 Number of Class I Areas with visibility improvement≥ 0.5 dv**Base Ctrl2-1**  **Ctrl2-2 Rev Base-2**  **Ctrl2-3 Ctrl2-4** 

care 0.533 0.512 0.478 1.092 1.074 1.045 gali 0.347 0.334 0.327 0.440 0.432 0.424 gila 0.317 0.312 0.307 0.515 0.505 0.501 grca 1.489 1.426 1.338 2.930 2.891 2.829
maza 0.733 0.705 0.662 1.102 1.087 1.063
meve 0.336 0.323 0.307 0.697 0.685 0.667 moba 0.568 0.530 0.488 1.087 1.060 0.998 pefo 2.970 2.869 2.703 3.936 3.849 3.709 pimo 0.443 0.438 0.425 0.745 0.740 0.732 sagu 0.290 0.284 0.283 0.354 0.351 0.346 sian 0.796 0.772 0.751 1.333 1.314 1.284 supe 0.857 0.850 0.804 1.291 1.266 1.229 syca 0.649 0.648 0.646 1.226 1.189 1.129 Total **10.328 10.003**  **9.519 16.748**  **16.443 15.956**  **98 th** **Percentile****-dv Table 1(a).** **Visibility Impairment (98 th** **Percentile) at Each Class I Area (CIA) Within APS Cholla-1's Zone of Influence (300 km) for 2001-2003 Base Case Emissions and Control Options**

**CIA 2001** **Ctrl2-1 Ctrl2-2**  **Ctrl2-3 Ctrl2-4**  **Base Ctrl2-1**  **Ctrl2-2**

0.021 0.055 0.018 0.047 0.324 0.317 0.305 0.013 0.020 0.008 0.016 0.278 0.278 0.277 0.005 0.010 0.010 0.014 0.427 0.426 0.418 0.063 0.151 0.039 0.101 0.874 0.831 0.766 0.028 0.071 0.015 0.039 0.686 0.680 0.638 0.013 0.029 0.012 0.030 0.492 0.472 0.454 0.038 0.080 0.027 0.089 0.573 0.572 0.570 0.101 0.267 0.087 0.227 2.725 2.666 2.586 0.005 0.018 0.005 0.013 0.554 0.544 0.524 0.006 0.007 0.003 0.008 0.192 0.188 0.181 0.024 0.045 0.019 0.049 0.770 0.744 0.719 0.007 0.053 0.025 0.062 0.762 0.746 0.727 0.001 0.003 0.037 0.097 0.805 0.780 0.740 **0.325 0.809**  **0.305 0.792**  **9.462 9.244**  **8.905 Change relative to base (** **-dv) 98** **th Percentile**  **Percentile) at Each Class I Area (CIA) Within APS Cholla-1's Zone of Influence (300 km) for 2001-2003 Base Case Emissions and Control Options**(listed in Table 2)**Rev Base-2 Ctrl2-3**  **Ctrl2-4 Ctrl2-1**  **Ctrl2-2 Ctrl2-3**  **Ctrl2-4**

0.710 0.698 0.679 0.007 0.019 0.012 0.031 0.355 0.349 0.342 0.000 0.001 0.006 0.013 0.576 0.566 0.549 0.001 0.009 0.010 0.027 1.624 1.591 1.542 0.043 0.108 0.033 0.082 1.067 1.044 1.027 0.006 0.048 0.023 0.040 0.950 0.941 0.927 0.020 0.038 0.009 0.023 0.964 0.944 0.913 0.001 0.003 0.020 0.051 3.471 3.456 3.419 0.059 0.139 0.015 0.052 0.923 0.905 0.876 0.010 0.030 0.018 0.047 0.246 0.237 0.232 0.004 0.011 0.009 0.014 1.268 1.246 1.211 0.026 0.051 0.022 0.057 1.245 1.225 1.193 0.016 0.035 0.020 0.052 1.389 1.376 1.358 0.025 0.065 0.013 0.031 **14.788 14.578**  **14.268 0.218**  **0.557 0.210**  **0.520**

**2002 Change relative to base (** **-dv) Percentile** **-dv Base**  **Ctrl2-1 Ctrl2-2**  **Rev Base-2 Ctrl2-3**  **Ctrl2-4 Ctrl2-1** 

0.639 0.638 0.638 1.441 1.406 1.352 0.001 0.219 0.215 0.207 0.370 0.358 0.339 0.004 0.421 0.406 0.384 0.602 0.600 0.596 0.015 0.677 0.675 0.673 1.169 1.151 1.105 0.002 0.767 0.752 0.716 1.098 1.089 1.074 0.015 0.576 0.550 0.511 1.138 1.114 1.076 0.026 0.562 0.562 0.561 0.707 0.692 0.669 0.000 2.861 2.826 2.816 3.929 3.803 3.709 0.035 0.495 0.490 0.444 0.622 0.620 0.619 0.005 0.168 0.166 0.162 0.256 0.254 0.251 0.002 0.797 0.791 0.790 1.140 1.138 1.135 0.006 0.633 0.629 0.628 0.914 0.903 0.871 0.004 0.553 0.546 0.539 0.864 0.847 0.822 0.007 **9.368 9.246**  **9.069 14.250**  **13.975 13.618**  **0.122 2003**  **98 th** **Percentile****-dv Change relative to base (** **Ctrl2-2 Ctrl2-3**  **Ctrl2-4 Base**  **Ctrl2-1 Ctrl2-2**  **Rev Base-2**

0.001 0.035 0.089 0.564 0.539 0.509 1.153 0.012 0.012 0.031 0.282 0.278 0.277 0.418 0.037 0.002 0.006 0.419 0.416 0.402 0.562 0.004 0.018 0.064 0.904 0.869 0.788 1.714 0.051 0.009 0.024 0.731 0.705 0.696 1.102 0.065 0.024 0.062 0.479 0.457 0.440 0.930 0.001 0.015 0.038 0.571 0.564 0.561 0.915 0.045 0.126 0.220 2.847 2.789 2.703 3.846 0.051 0.002 0.003 0.508 0.495 0.486 0.779 0.006 0.002 0.005 0.231 0.231 0.227 0.291 0.007 0.002 0.005 0.797 0.785 0.768 1.268 0.005 0.011 0.043 0.762 0.746 0.727 1.209 0.014 0.017 0.042 0.692 0.680 0.656 1.226 **0.299 0.275**  **0.632 9.787**  **9.554 9.240**  **15.413 98** **th Percentile** **-dv Change relative to base (** **-dv) Change relative to base (dv)** 

**Ctrl2-3 Ctrl2-4**  **Ctrl2-1 Ctrl2-2**  **Ctrl2-3 Ctrl2-4**  1.108 1.086 0.025 0.055 0.045 0.067 0.418 0.408 0.004 0.005 0.000 0.010 0.554 0.549 0.003 0.017 0.008 0.013 1.660 1.605 0.035 0.116 0.054 0.109 1.089 1.063 0.026 0.035 0.013 0.039 0.903 0.893 0.022 0.039 0.027 0.037 0.912 0.906 0.007 0.010 0.003 0.009 3.730 3.628 0.058 0.144 0.116 0.218 0.759 0.732 0.013 0.022 0.020 0.047 0.291 0.285 0.000 0.004 0.000 0.006 1.246 1.211 0.012 0.029 0.022 0.057 1.208 1.176 0.016 0.035 0.001 0.033 1.189 1.129 0.012 0.036 0.037 0.097 **15.067 14.671**  **0.233 0.547**  **0.346 0.742**  **All Years Table 2. Control Options (per EPA Region 9) and Corresponding Emission Reductions Relative to Base Used in Visibility Modeling** 

Base LNB+SOFA 0 $0 Ctrl2-1 SNCR+LNB+SOFA 309 $999,045 Ctrl2-2 SCR+LNB+SOFA 797 $4,237,867 Rev Base-2LNB+SOFA; FFSpec 0 $0 Ctrl2-3 SNCR+LNB+SOFA 309 $999,045 Ctrl2-4 SCR+LNB+SOFA 797 $4,237,867
**Table 3. NOx Control Technologies for Cholla Unit 1**(from Andover Technology Partners Report Table 5-10) version 9/19/12

**SNCR SCR**  Capacity Factor 86% 86% Control Efficiency 30% 77%* **Uncontrolled Rate** NOx Rate (lb/hr) 274 274 NOx Rate (lb/MMBtu) 0.22 0.22 NOx (TPY) 1032 1032 **Controlled Rate** NOx Rate (lb/hr) 192 62 NOx Rate (lb/MMBtu) 0.15 0.05 NOx (TPY) 723 235

**Tons/Year Removed** 310 798

**Total Cost, $/y**

**ear** $999,045 $4,237,867 **$/Ton** $3,226 $5,313 **$/Ton (incremental)** $3,226 $6,638 * SCR is actually capable of 90% removal. The model that we used set a lower limit of 0.05 lb/MMBtu, but lower NOx levels should be achievable

**Control NOx** **-Emis**

**(TPY) $/year**  **Control Option**

**Cholla 1 – NOx Unit 1** **Table 2. Control Options (per EPA Region 9) and Corresponding Emission Reductions Relative to Base Used in Visibility Modeling**

(from Andover Technology Partners Report Table 5-10) version 9/19/12

### Cholla Unit 1

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

Controls **Technology Used**  **-Emissions**

**(TPY, max day) $/year** 
**Base Case Base**  **LNB+SOFA** 0 $0 **SNCR u.1 + BART Ctrl2-1**  **SNCR+LNB+SOFA** 309 $999,045 **SCR u.1 + BART Ctrl2-2**  **SCR+LNB+SOFA** 797$4,237,867 **Rev Base+FFSpec Rev Base-2** **LNB+SOFA; FFSpec** 0 $0 **SNCR u.1 Ctrl2-3**  **SNCR+LNB+SOFA** 309 $999,045 **SCR u.1 Ctrl2-4**  **SCR+LNB+SOFA** 797$4,237,867
**Table 3(b). NOx Control Technologies for Cholla Unit 1**(from Andover Technology Partners Report Table 5-10) version 9/19/12

**SNCR SCR**  Capacity Factor 86% 86% Control Efficiency 30% 77%* **Uncontrolled Rate** NOx Rate (lb/hr) 274 274 NOx Rate (lb/MMBtu) 0.22 0.22 NOx (TPY) 1032 1032 **Controlled Rate** NOx Rate (lb/hr) 192 62 NOx Rate (lb/MMBtu) 0.15 0.05 NOx (TPY) 723 235

**Tons/Year Removed** 310 798

**Total Cost, $/year** $999,045 $4,237,867 **$/Ton** $3,226 $5,313 **$/Ton (incremental)** $3,226 $6,638



### Cholla Unit 1visibility method 8, 20% best background Using dv from area with highest impact (13 areas)

Controls **Control**

**Option ton/yr** 

**reduction cost, $/yr** 

**(millions) $/ton** 

**reduction visibility** 

**impact, dv visibility** 

**benefit, dv $/dv** 

**(millions)**# areas w/

improvemen t≥ 0.5 dv **Base Case Base**  0 $0.0 3.4 **SNCR u.1 + BART Ctrl2-1**  309 $1.0 $3,233 3.3 0.10 $10 0 **SCR u.1 + BART Ctrl2-2**  797 $4.2 $5,317 3.2 0.20 $22 0 **Rev Base+FFSpec Rev Base-2**  0 $0.0 4.7 **SNCR u.1 Ctrl2-3**  309 $1.0 $3,233 4.6 0.13 $8 0 **SCR u.1 Ctrl2-4**  797 $4.2 $5,317 4.4 0.33 $13 0
(same tons & costs as above) Using dv sum over all areas (13 areas)

Controls **Control**

**Option ton/yr** 

**reduction cost, $/yr** 

**(millions) $/ton** 

**reduction visibility** 

**impact, dv visibility** 

**benefit, dv $/dv** 

**(millions) Base Case**  **Base** 0 $0.0 11.4 **SNCR u.1 + BART Ctrl2-1**  309 $1.0 $3,233 11.1 0.33 $3.0 **SCR u.1 + BART Ctrl2-2**  797 $4.2 $5,317 10.6 0.75 $5.7 * SCR is actually capable of 90% removal. The model that we used set a lower limit of 0.05 lb/MMBtu, but lower NOx levels should be achievable **Cholla 1 – NOx Control**  **Option Unit 1** **Rev Base+FFSpec Rev Base-2**  0 $0.0 $0 18.8

**SNCR u.1 Ctrl2-3**  309 $1.0 $3,233 18.4 0.36 $2.8 **SCR u.1 Ctrl2-4**  797 $4.2 $5,317 17.9 0.89 $4.8Cholla Unit 1

visibility method 8, 20% best background (this page edited from vis8.20best sheet) **Table 1(b). Visibility Impairment (98** **th Percentile) for 2001-2003 Base Case Emissions and Control Options** 

Base Ctrl2-1 Ctrl2-2 Rev Base-2 Ctrl2-3 Ctrl2-4 Base Rev Base-2 Ctrl2-1 CIA Base CaseSNCR u.1 + BART SCR u.1 +

BART Rev

Base+FFSpecSNCR u.1 SCR u.1 Base Case Rev Base+FFSpecSNCR u.1 +

BART

careCapitol Reef 0.71 0.67 0.62 1.46 1.43 1.38 0.00 0.00 0.04 galiGaliuro 0.30 0.29 0.29 0.47 0.46 0.45 0.00 0.00 0.01 gilaGila 0.48 0.48 0.48 0.72 0.71 0.69 0.00 0.00 0.01 grcaGrand Canyon 1.14 1.09 1.02 2.22 2.18 2.12 0.00 0.00 0.05
mazaMazatzal 0.79 0.78 0.75 1.25 1.23 1.22 0.00 0.00 0.02
meveMesa Verde 0.65 0.62 0.60 1.33 1.30 1.26 0.00 0.00 0.03
moba Mount Baldy 0.71 0.70 0.69 1.23 1.23 1.21 0.00 0.00 0.01 pefoPetrified Forest 3.38 3.28 3.18 4.73 4.60 4.40 0.00 0.00 0.10 pimoPine Mountain 0.55 0.55 0.52 0.88 0.86 0.84 0.00 0.00 0.01 saguSaguaro 0.23 0.23 0.23 0.31 0.30 0.29 0.00 0.00 0.00 sianSierra Ancha 0.87 0.85 0.81 1.43 1.41 1.37 0.00 0.00 0.02 supeSuperstition 0.81 0.78 0.75 1.30 1.27 1.23 0.00 0.00 0.03 sycaSycamore Canyon 0.76 0.74 0.69 1.46 1.45 1.43 0.00 0.00 0.03 **Total** 11.39 11.06 10.64 18.77 18.42 17.88 0.33 **Max** 3.38 3.28 3.18 4.73 4.60 4.40 0.10 **# CIAs w.****-dv >0.5** 10 10 10 11 11 11 0

**Ta ble 5(b). Control Opon Cost E** **ffecveness (million $/dv)†** Ctrl2-1 Ctrl2-2 Ctrl2-3 Ctrl2-4 CIA SNCR u.1 + BART SCR u.1 +

BART SNCR u.1 SCR u.1

careCapitol Reef 26 48 30 51 galiGaliuro 100 385 125 184 gilaGila 200 605 100 177 grcaGrand Canyon 22 36 25 40
mazaMazatzal 59 112 77 141
meveMesa Verde 36 74 27 60
moba Mount Baldy 91 212 200 212 pefoPetrified Forest 10 22 8 13 pimoPine Mountain 200 146 62 128 saguSaguaro N/A N/A 167 303 sianSierra Ancha 59 74 45 67 supeSuperstition 32 76 42 67 sycaSycamore Canyon 37 61 77 128 **$/dv_sum** 3.0 5.7 2.8 4.8 ($/yr) / (sum of dv benefits over all areas) **$/dv_max** 10.3 21.7 7.7 12.8 ($/yr) / (max dv benefit of any area)

†$/dv = $ per year from Table 3 divided by delta dv from Table 1(d) for each control option, in millions **Class I Area Class I Area**  **98 th** **Percentile****-dv Change relative to base (dv)** 

Number of Class I Areas with visibility improvementCtrl2-2 Ctrl2-3 Ctrl2-4

SCR u.1 + BART SNCR u.1 SCR u.1 0.09 0.03 0.08 0.01 0.01 0.02 0.01 0.01 0.02 0.12 0.04 0.11 0.04 0.01 0.03 0.06 0.04 0.07 0.02 0.01 0.02 0.20 0.13 0.33 0.03 0.02 0.03 0.00 0.01 0.01 0.06 0.02 0.06 0.06 0.02 0.06 0.07 0.01 0.03 0.75 0.36 0.89 0.20 0.13 0.33 0 0 0 **Change relative to base (dv)**

Number of Class I Areas with visibility improvement≥ 0.5 dv**Base Ctrl2-1**  **Ctrl2-2 Rev Base-2**  **Ctrl2-3 Ctrl2-4** 

care 0.629 0.624 0.587 1.305 1.281 1.243 gali 0.367 0.360 0.349 0.489 0.475 0.456 gila 0.391 0.382 0.373 0.660 0.646 0.641 grca 1.956 1.880 1.760 3.889 3.837 3.755
maza 0.814 0.792 0.740 1.245 1.227 1.198
meve 0.455 0.435 0.406 0.985 0.967 0.944 moba 0.724 0.688 0.631 1.458 1.404 1.320 pefo 3.525 3.405 3.141 4.733 4.626 4.453 pimo 0.495 0.489 0.473 0.859 0.852 0.843 sagu 0.296 0.286 0.275 0.357 0.356 0.354 sian 0.882 0.854 0.810 1.524 1.501 1.466 supe 0.898 0.888 0.858 1.411 1.383 1.338 syca 0.764 0.737 0.664 1.460 1.448 1.429 Total **12.196 11.820**  **11.067 20.375**  **20.003 19.440**  **98 th** **Percentile****-dv Table 1(b).** **Visibility Impairment (98 th** **Percentile) at Each Class I Area (CIA) Within APS Cholla-1's Zone of Influence (300 km) for 2001-2003 Base Case Emissions and Control Options**

**CIA 2001** **Ctrl2-1 Ctrl2-2**  **Ctrl2-3 Ctrl2-4**  **Base Ctrl2-1**  **Ctrl2-2**

0.005 0.042 0.024 0.062 0.395 0.379 0.364 0.007 0.018 0.014 0.033 0.298 0.292 0.292 0.009 0.018 0.014 0.019 0.489 0.489 0.489 0.076 0.196 0.052 0.134 1.130 1.073 0.983 0.022 0.074 0.018 0.047 0.758 0.742 0.710 0.020 0.049 0.018 0.041 0.652 0.624 0.596 0.036 0.093 0.054 0.138 0.714 0.710 0.705 0.120 0.384 0.107 0.280 3.208 3.172 3.094 0.006 0.022 0.007 0.016 0.618 0.606 0.580 0.010 0.021 0.001 0.003 0.195 0.191 0.184 0.028 0.072 0.023 0.058 0.851 0.821 0.780 0.010 0.040 0.028 0.073 0.809 0.778 0.730 0.027 0.100 0.012 0.031 0.937 0.937 0.902 **0.376 1.129**  **0.372 0.935**  **11.054 10.814**  **10.409 98** **th Percentile**  **Change relative to base (****-dv) Percentile) at Each Class I Area (CIA) Within APS Cholla-1's Zone of Influence (300 km) for 2001-2003 Base Case Emissions and Control Options** (listed in Table 2)**Rev Base-2 Ctrl2-3**  **Ctrl2-4 Ctrl2-1**  **Ctrl2-2 Ctrl2-3**  **Ctrl2-4**

0.894 0.879 0.855 0.016 0.031 0.015 0.039 0.397 0.391 0.383 0.006 0.006 0.006 0.014 0.742 0.729 0.707 0.000 0.000 0.013 0.035 2.081 2.039 1.974 0.057 0.147 0.042 0.107 1.213 1.187 1.158 0.016 0.048 0.026 0.055 1.363 1.323 1.270 0.028 0.056 0.040 0.093 1.280 1.253 1.219 0.004 0.009 0.027 0.061 4.166 4.135 4.068 0.036 0.114 0.031 0.098 1.051 1.028 0.994 0.012 0.038 0.023 0.057 0.269 0.258 0.242 0.004 0.011 0.011 0.027 1.434 1.408 1.367 0.030 0.071 0.026 0.067 1.351 1.328 1.292 0.031 0.079 0.023 0.059 1.659 1.644 1.622 0.000 0.035 0.015 0.037 **17.900 17.602**  **17.151 0.240**  **0.645 0.298**  **0.749 Change relative to base (** **-dv) Percentile** **-dv 2002** **Base Ctrl2-1**  **Ctrl2-2 Rev Base-2**  **Ctrl2-3 Ctrl2-4**  **Ctrl2-1**

0.789 0.768 0.748 1.806 1.762 1.692 0.021 0.228 0.227 0.222 0.403 0.390 0.368 0.001 0.530 0.511 0.481 0.754 0.749 0.749 0.019 0.843 0.808 0.805 1.491 1.467 1.430 0.035 0.841 0.832 0.789 1.243 1.232 1.215 0.009 0.809 0.783 0.724 1.653 1.617 1.562 0.026 0.682 0.682 0.681 0.937 0.917 0.885 0.000 3.458 3.363 3.273 4.883 4.821 4.766 0.095 0.508 0.508 0.488 0.675 0.674 0.672 0.000 0.170 0.169 0.167 0.270 0.268 0.264 0.001 0.824 0.820 0.814 1.227 1.224 1.220 0.004 0.669 0.651 0.639 0.968 0.959 0.945 0.018 0.542 0.535 0.524 1.011 0.993 0.966 0.007 **10.893 10.657**  **10.355 17.321**  **17.073 16.734**  **0.236 Change relative to base (**  **98 th** **Percentile****-dv 2003** **Ctrl2-2 Ctrl2-3**  **Ctrl2-4 Base**  **Ctrl2-1 Ctrl2-2**  **Rev Base-2**

0.041 0.044 0.114 0.705 0.667 0.617 1.461 0.006 0.013 0.035 0.303 0.293 0.292 0.470 0.049 0.005 0.005 0.483 0.478 0.476 0.716 0.038 0.024 0.061 1.138 1.092 1.021 2.220 0.052 0.011 0.028 0.792 0.775 0.754 1.245 0.085 0.036 0.091 0.652 0.624 0.595 1.332 0.001 0.020 0.052 0.710 0.699 0.690 1.231 0.185 0.062 0.117 3.379 3.282 3.184 4.729 0.020 0.001 0.003 0.553 0.548 0.524 0.876 0.003 0.002 0.006 0.228 0.228 0.228 0.307 0.010 0.003 0.007 0.871 0.854 0.814 1.430 0.030 0.009 0.023 0.809 0.778 0.753 1.296 0.018 0.018 0.045 0.764 0.737 0.694 1.460 **0.538 0.248**  **0.587 11.387**  **11.055 10.642**  **18.773 Change relative to base (** **-dv) 98** **th Percentile** **-dv Ctrl2-3**  **Ctrl2-4 Ctrl2-1**  **Ctrl2-2 Ctrl2-3**  **Ctrl2-4**

1.428 1.378 0.038 0.088 0.033 0.083 0.462 0.447 0.010 0.011 0.008 0.023 0.706 0.692 0.005 0.007 0.010 0.024 2.180 2.115 0.046 0.117 0.040 0.105 1.232 1.215 0.017 0.038 0.013 0.030 1.295 1.261 0.028 0.057 0.037 0.071 1.226 1.211 0.011 0.020 0.005 0.020 4.600 4.399 0.097 0.195 0.129 0.330 0.860 0.843 0.005 0.029 0.016 0.033 0.301 0.293 0.000 0.000 0.006 0.014 1.408 1.367 0.017 0.057 0.022 0.063 1.272 1.233 0.031 0.056 0.024 0.063 1.447 1.427 0.027 0.070 0.013 0.033 **18.417 17.881**  **0.332 0.745**  **0.356 0.892**  **All Years Change relative to base (dv)** lookup tables

Cholla Control scenarios scenarios unit 1 units 2-4 short

Base LNB+SOFA LNB+CCSOFA Base Case Ctrl2-1 SNCR+LNB+SOFA SCR SNCR u.1 + BART Ctrl2-2 SCR+LNB+SOFA SCR SCR u.1 + BART Rev Base-2Post-LNB;SO2corr Post-LNB;SO2corr;FGD-FFSpec Rev Base+FFSpec Ctrl2-3 SNCR+LNB+SOFA LNB+CCSOFA SNCR u.1 Ctrl2-4 SCR+LNB+SOFA LNB+CCSOFA SCR u.1Class I areas abbrClass I area Class I area, medium Class I area, long

bandBandelier Bandelier NM Bandelier NM brcaBryce Canyon Bryce Canyon NP Bryce Canyon NP
careCapitol Reef Capitol Reef NP Capitol Reef NP chirChiricahua NM Chiricahua NM Chiricahua NM chrwChiricahua Chiricahua Wild. Chiricahua Wilderness galiGaliuro Galiuro Wild. Galiuro Wilderness gilaGila Gila Wild. Gila Wilderness grcaGrand Canyon Grand Canyon NP Grand Canyon NP jotrJoshua Tree Joshua Tree NP Joshua Tree NP
mazaMazatzal Mazatzal Wild. Mazatzal Wilderness
meveMesa Verde Mesa Verde NP Mesa Verde NP mobaMount Baldy Mount Baldy Wild. Mount Baldy Wilderness pefoPetrified ForestPetrified Forest NP Petrified Forest NP pimoPine Mountain Pine Mountain Wild. Pine Mountain Wilderness saguSaguaro Saguaro NP Saguaro NP sapeSan Pedro ParksSan Pedro Parks Wild.San Pedro Parks Wilderness sianSierra Ancha Sierra Ancha Wild. Sierra Ancha Wilderness supeSuperstition Superstition Wild. Superstition Wilderness sycaSycamore CanyonSycamore Canyon Wild.Sycamore Canyon Wilderness zionZion Zion NP Zion NPstate

NM UT UT AZ AZ AZ NM AZ CA AZ CO AZ AZ AZ AZ NM AZ AZ AZ UT