# Appendix C: Pollutants Causing Visibility Impairment

Appendix to Chapter 7 of the State Implementation Plan

Appendix to Chapter 7 of the.......................................................................................................... 1 State Implementation Plan .............................................................................................................. 1 Overview of data sources............................................................................................................ 2 Statewide Base Year Aerosol Light Extinction .......................................................................... 3 Craters of the Moon Data............................................................................................................ 3 Hells Canyon Wilderness Data ................................................................................................... 5 Sawtooth Wilderness Data.......................................................................................................... 7 Selway-Bitterroot Data ............................................................................................................... 9 Yellowstone National Park ....................................................................................................... 11

### Appendix C Page 2



## Overview of data sources
The data relied upon for Chapter 7 came from the WRAP TSS website and is available at: http://vista.cira.colostate.edu/TSS/Results/HazePlanning.aspx By selecting a location from the map, views are given the option of viewing monitoring, emission inventory or modeling data. For this Chapter monitoring data for the individual Class I areas. The TSS website allows users to view information in a stack bar or line graph for the 20% best or worst days, by pollutant in either dv or concentration levels. The “The Class I Summary Table” option was used to develop information for the statewide and individual Class I “Aerosol Light Extinction” 3-D bar graphs as in Figure 7-1 data. Information for the pie charts in Chapter 7 utilized the TSS monitoring data from the base year 2002 worst 20% days. The data is available by selecting the Class I are of interest from the TSS website map, then select “Monitoring” from the box below. Select “Total Light Extinction Time Series” and the pollutant and years of interest from the pull down table. If the data isn’t displayed below the graph, click on “+Show Data.”

### Appendix C Page 3



## Statewide Base Year Aerosol Light Extinction

Figure 7-1 Data Idaho Class I Area Base Year Aerosol Light Extinction

2000-04 Baseline Conditions Craters of the Moon 2000-04

Baseline Conditions Hells Canyon 2000-04

Baseline Conditions Sawtooth Wilderness 2000-04

Baseline Conditions Selway Wilderness 2000-04

Baseline Conditions Yellowstone (Mm-1) (Mm-1) (Mm-1) (Mm-1) (Mm-1) Amm. Sulfate 5.69 8.37 3.06 4.83 4.26
Amm. Nitrate 11.35 28.47 0.63 1.46 1.77 Organic Carbon 9.06 15.6 22.24 20.01 13.48
Elemental Carbon 1.92 3.06 4.2 2.52 2.48

Fine Soil 1.04 0.66 0.77 0.94 0.95
Coarse Material3 2.95 1.93 1.74 2.49 2.58
Sea Salt3 0.03 0.05 0.12 0.26 0.02
Total Light Extinction 42.05 56.21 42.77 42.52 34.55 Deciview 14 18.55 13.78 13.41 11.76



## Craters of the Moon Data Data Figure 7-2

Craters of the Moon NM 2002 20% Worst Days

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction CRMO1 NIA 2001 21 7.99 16.02 4.3 1.4 1.36 2.76 0 CRMO1 NIA 2002 23 4.49 13.84 10.68 2.06 1.05 2.68 0.01 CRMO1 NIA 2003 21 4.23 6.92 14.77 2.53 0.86 3.46 0 CRMO1 NIA 2004 23 6.07 8.61 6.49 1.69 0.9 2.89 0.12

### Appendix C Page 4 Data Figure 7-10
Class I Area Visibility Summary: Craters of the Moon NM, ID

Visibility Conditions:Worst 20% Days RRF Calculation Method: Specific Days (EPA)

Emissions Scenarios: 2000-04 Baseline (plan02d) & 2018 PRPb (prp18b) Monitore d Estimated Projected

2000-04 Baseline Conditions 2018

Unifor m Rate of Progres s Target 2064

Natural Condition
s 2018 Unifor m Rate of Progres s Target 2018

Projected Visibility Condition
s Baseline to 2018 Change In Statewide Emission
s Baseline to 2018 Change In Upwind Weighted Emissions 2 Baseline to 2018 Change In Anthropogeni c Upwind Weighted Emissions2
(Mm-1) (Mm1)1 (Mm-1) (Mm1)1 (Mm-1) (tons / %) (%) (%)

-13,272 Amm. Sulfate 5.69 4.39 0.83 4.39 5.35 -34% -25% -30% -32,418 Amm. Nitrate 11.35 8.31 1.05 8.31 8.3 -19% -27% -34% -4,416 Organic Carbon 9.06 7.73 3.98 7.73 8.73 -8% -5% -25% -2,084 Elementa l Carbon 1.92 1.54 0.36 1.54 1.51 -15% -17% -50% 2,350 Fine Soil 1.04 1.08 1.2 1.08 1.23 16% 9% 15% 13,507 Coarse Material3 2.95 3.2 4.05 3.2 20% 12% 27%
Sea Salt3 0.03 0.04 0.06 0.04 Not Applicabl
e Total Light Extinctio n 32.04 26.29 11.53 35.96 38.11 Deciview 14 12.49 7.53 12.49 13.06 Not Applicable
Reductio n Needed 5.75 20.51 Base year and reduction in dv 14 1.51 6.47

### Appendix C Page 5



## Hells Canyon Wilderness Data
Data Figure 7-11 Hells Canyon Wilderness Area 20% Worst Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction HECA1 NIA 2001 23 9.95 32.88 11.36 2.94 0.68 1.35 0 HECA1 NIA 2002 22 6.58 20.03 20.75 3.69 0.75 1.96 0.01 HECA1 NIA 2004 25 8.59 32.5 14.71 2.55 0.56 2.48 0.13



### Data Figure 7-17 Hells Canyon Wilderness Area 20% Best Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction HECA1 NIA 2001 22 2.21 1.03 1.61 0.55 0.24 0.7 0.11 HECA1 NIA 2002 21 1.91 0.79 2.29 0.74 0.32 0.9 0.04 HECA1 NIA 2004 24 1.68 0.53 2.14 0.46 0.19 0.81 0.08

### Appendix C Page 6 Data Figure7-19 Class I Area Visibility Summary: Hells Canyon W, ID Visibility Conditions:Worst 20% Days RRF Calculation Method: Specific Days (EPA)

Emissions Scenarios: 2000-04 Baseline (plan02d) & 2018 PRPb (prp18b) Monitored Estimated Projected

2000-04 Baseline Conditions 2018

Uniform Rate of Progress Target 2064

Natural Conditions 2018

Projected Visibility Conditions Baseline

to 2018 Change In Statewide Emissions Baseline

to 2018 Change In Upwind Weighted Emissions2 Baseline to

2018 Change In Anthropogenic Upwind Weighted Emissions2
(Mm-1) (Mm1)1 (Mm-1) (Mm-1) (tons / %) (%) (%) -20,912 Amm. Sulfate 8.37 6.35 1.14 7.49 -40% -29% -38% -96,079 Amm. Nitrate 28.47 19.69 2.67 19.91 -37% -22% -30% -3,120 Organic Carbon 15.6 12.12 3.69 11.54 -3% -12% -31% -3,043 Elemental Carbon 3.06 2.37 0.37 2.65 -11% -21% -44% -909 Fine Soil 0.66 0.72 0.92 0.74 -3% 10% 15% 31,039 Coarse Material3 1.93 2.26 3.4 47% 12% 27% Sea Salt3 0.05 0.05 0.05 Needed Improvement 0 14.58 45.9 Sea Salt3 0.05 0.05 0.05 Not Applicable Total Light Extinction 58.14 43.56 12.24 55.31 Deciview 18.55 16.17 8.32 16.49 Not Applicable Dv needed 0 2.38 10.23

### Appendix C Page 7



## Sawtooth Wilderness Data
Data Figure 7-20

Sawtooth Wilderness Area 20% Worst Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction SAWT1 NIA 2001 22 3.47 0.79 23.94 5.63 1.07 2.33 0.28 SAWT1 NIA 2002 22 2.13 0.57 22.51 4.95 0.76 1.55 0 SAWT1 NIA 2003 23 2.6 0.54 21.59 2.85 0.45 1.57 0.21 SAWT1 NIA 2004 24 4.05 0.62 20.92 3.38 0.8 1.52 0.01



### Data Figure 7-28 Sawtooth Wilderness Area 20% Best Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction SAWT1 NIA 2001 22 1.74 0.36 2.81 0.88 0.14 0.33 0.04 SAWT1 NIA 2002 21 1.12 0.32 2.13 0.58 0.16 0.31 0 SAWT1 NIA 2003 22 0.83 0.22 1.92 0.46 0.09 0.31 0 SAWT1 NIA 2004 23 1.12 0.28 2.63 0.56 0.17 0.33 0.02

### Appendix C Page 8 Figure 7-30 Class I Area Visibility Summary: Sawtooth W, ID Visibility Conditions:Worst 20% Days RRF Calculation Method: Specific Days (EPA)

Emissions Scenarios: 2000-04 Baseline (plan02d) & 2018 PRPb (prp18b) Monitore d Estimated Projected

2000-04 Baseline Conditions 2018

Unifor m Rate of Progres s Target 2064

Natural Condition
s 2018

Projected Visibility Condition
s Baseline to 2018 Change In Statewide Emission
s Baseline to 2018 Change In Upwind Weighted Emissions 2 Baseline to 2018 Change In Anthropogeni c Upwind Weighted Emissions2
(Mm-1) (Mm1)1 (Mm-1) (Mm-1) (tons / %) (%) (%) -13,272 Amm. Sulfate 3.06 2.5 0.81 2.59 -34% -27% -35% -32,418 Amm. Nitrate 0.63 0.65 0.7 0.54 -19% -25% -32% -4,416 Organic Carbon 22.24 16.51 3.94 20.81 -8% -7% -26% -2,084 Elemental Carbon 4.2 3.2 0.38 3.73 -15% -16% -44% 2,350 Fine Soil 0.77 0.81 0.94 0.79 16% 12% 18% 13,507 Coarse Material3 1.74 1.89 2.39 20% 15% 31% Sea Salt3 0.12 0.12 0.13 Not Applicabl
e Total Light Extinctio n 32.76 25.68 9.29 40.32 Deciview 13.78 12.06 6.42 13.22 Not Applicable Reductio n Needed 0 7.08 23.47 Reductio n Needed dv 1.72 7.36

### Appendix C Page 9



## Selway-Bitterroot Data
Data Figure 7-31

Selway-Bitterroot Wilderness Area 20% Worst Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction SULA1 NIA 2001 24 4.78 1.26 11.47 1.95 1.56 3.7 1.01 SULA1 NIA 2002 24 4.63 1.58 12.59 2.05 0.91 2.45 0 SULA1 NIA 2003 23 4.78 1.57 43.26 4.34 0.59 1.75 0 SULA1 NIA 2004 24 5.14 1.45 12.73 1.75 0.69 2.08 0.01



### Data Figure 7-39 Selway-Bitterroot Wilderness Area 20% Best Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction SULA1 NIA 2001 23 1.32 0.43 0.96 0.29 0.21 0.3 0.1 SULA1 NIA 2002 23 1.14 0.39 1.02 0.32 0.07 0.21 0 SULA1 NIA 2003 22 0.69 0.18 0.77 0.16 0.04 0.13 0.01 SULA1 NIA 2004 23 1.23 0.36 0.99 0.33 0.06 0.21 0.01

### Appendix C Page 10 Data Figure 7-41 Class I Area Visibility Summary: Anaconda-Pintler W, MT: SelwayBitterroot W, MT Visibility Conditions:Worst 20% Days RRF Calculation Method: Specific Days (EPA)

Emissions Scenarios: 2000-04 Baseline (plan02d) & 2018 PRPb (prp18b) Monitored Estimated Projected

2000-04 Baseline Conditions 2018

Uniform Rate of Progress Target 2064

Natural Conditions 2018

Projected Visibility Conditions Baseline

to 2018 Change In Statewide Emissions Baseline

to 2018 Change In Upwind Weighted Emissions2 Baseline to

2018 Change In Anthropogenic Upwind Weighted Emissions2
(Mm-1) (Mm1)1 (Mm-1) (Mm-1) (tons / %) (%) (%) -6,128 Amm. Sulfate 4.83 3.86 1.1 4.32 -12% -15% -29% -63,099 Amm. Nitrate 1.46 1.38 1.12 0.96 -26% -21% -37% -1,587 Organic Carbon 20.01 15.46 4.84 19.09 -3% -2% -20% -1,971 Elemental Carbon 2.52 2 0.43 2.4 -17% -6% -39% 5,807 Fine Soil 0.94 0.93 0.91 1.02 14% 10% 17% 54,709 Coarse Material3 2.49 2.54 2.7 19% 13% 33% Sea Salt3 0.26 0.26 0.27 Not Applicable Reduction Needed 0 6.08 21.14 Total Light Extinction 32.51 26.43 11.37 40.54 Deciview 13.41 12.02 7.43 12.94 Not Applicable Dv needed 0 1.39 5.98

### Appendix C Page 11



## Yellowstone National Park Data Figure 7-42

Yellowstone National Park Area 20% Worst Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction YELL2 NIA 2000 20 4.16 1.97 18.45 3.65 0.8 2.84 0 YELL2 NIA 2001 22 4.71 2.36 16.11 2.61 1.39 2.69 0 YELL2 NIA 2002 22 3.8 1.63 11.16 1.87 1.21 3.12 0.03 YELL2 NIA 2003 21 4.07 1.43 12.8 2.33 0.44 1.3 0 YELL2 NIA 2004 23 4.57 1.46 8.89 1.94 0.92 2.94 0.07 

### Data Figure 7-50 Yellowstone National Park Area 20% Best Days Light Extinction

Site Method Year N SO4 Extinction NO3

Extinction OMC

Extinction EC

Extinction Soil

Extinction CM

Extinction SeaSalt

Extinction YELL2 NIA 2000 19 1.68 0.88 1.13 0.15 0.09 0.25 0.05 YELL2 NIA 2001 21 1.92 0.76 1.16 0.4 0.12 0.19 0 YELL2 NIA 2002 21 1.32 0.82 1.14 0.31 0.13 0.27 0 YELL2 NIA 2003 20 1.12 0.53 0.92 0.24 0.09 0.24 0 YELL2 NIA 2004 22 1.33 0.62 1.27 0.46 0.08 0.26 0.02

### Appendix C Page 12 Data Figure 7-51 Class I Area Visibility Summary: Grand Teton NP, WY: Red Rock Lakes

NWRW, MT: Teton W, WY: Yellowstone NP, WY Visibility Conditions:Worst 20% Days RRF Calculation Method: Specific Days (EPA)

Emissions Scenarios: 2000-04 Baseline (plan02d) & 2018 PRPb (prp18b) Monitored Estimated Projected

2000-04 Baseline Conditions 2018

Uniform Rate of Progress Target 2064

Natural Conditions 2018

Projected Visibility Conditions Baseline

to 2018 Change In Statewide Emissions Baseline

to 2018 Change In Upwind Weighted Emissions2 Baseline to

2018 Change In Anthropogenic Upwind Weighted Emissions2
(Mm-1) (Mm1)1 (Mm-1) (Mm-1) (tons / %) (%) (%) -22,794 Amm. Sulfate 4.26 3.35 0.76 3.71 -15% -26% -32% -39,861 Amm. Nitrate 1.77 1.5 0.63 1.36 -14% -26% -34% -730 Organic Carbon 13.48 11.02 4.61 12.87 -3% -4% -29% -1,217 Elemental Carbon 2.48 1.97 0.43 2.2 -15% -11% -50% 5,223 Fine Soil 0.95 0.97 1.02 1.04 31% 14% 25% 13,394 Coarse Material3 2.58 2.67 2.99 27% 19% 42% Sea Salt3 0.02 0.02 0.03 Not Applicable Reductions Needed 0 4.04 15.07 Total Light Extinction 25.54 21.5 10.47 32.77 Deciview 11.76 10.52 6.44 11.23 Not Applicable

Deciview needed 0 1.24 5.32