# Summary of WRAP RMC BART Modeling for Montana

Draft #5

May 30, 2007

More Information: http://pah.cert.ucr.edu/aqm/308/bart.shtml

Montana BART Webpage: http://www.deq.state.mt.us/AirQuality/Visibility.as p

This document summarizes the preliminary CALMET/CAL PUFF BART modeling results performed by

the WRAP RMC for Montana. The procedures used are outlined in the Montana BART Modeling

Protocol that is available at:



# http://www.epa.gov/region8/air/mtregionalhaze.html

The basic assumptions in the WRAP BART CALMET/CALPU FF modeling are as follows:

• Use of three years of modeling of 2001, 2002 and 20 03 (except Alaska where just one year, 2002,

was used).

• Visibility impacts due to emissions of SO2, NOx and primary PM emissions were calculated

(even for Section 309 States):

o Unless States provided speciated PM emissions, all PM emissions were modeled as

PM 2.5



# .

• Visibility was calculated using the Original IMPROV E equation and Annual Average Natural

Conditions.

The tables that follow contain for each Montana BAR T source the following information:

• The first row contains the source number, name and SO2 and NOx emissions that were provided

by the State.

• Each subsequent row has information on the visibili ty impacts at Class I area, with the columns

containing the following information for the indica ted Class I area:

1. The four-letter Class I area identifier that is als o used in the map of CALPUFF

modeling domain that shows Class I areas and source locations;

2. Name of Class I area;

3. The distance (km) between the source and the closes t receptor in the Class I area;

4. The maximum visibility impact in deciview across th e three years of modeling;

5. The 99 th



# percentile (i.e., 11 th



# highest) visibility impact across the three years of

modeling;

6. The 98 th



# percentile (i.e., 22 th



# highest) visibility impact across the three years of

modeling;

7. The number of days the visibility impact at the Cla ss I area exceeded the 0.5 dv

threshold;

8. The 98 th



# percentile (8 th



# highest) visibility impacts in 2001;

9. The 98 th



# percentile (8 th



# highest) visibility impacts in 2002;

10. The 98 th



# percentile (8 th



# highest) visibility impacts in 2003;

11. The average of the 98 th 

# percentile across 2001, 2002 and 2003

# The CALPUFF model version number used in these anal yses is 6.112.

The Columbia Falls Al source lies within 10 km of G lacier National Park (glac) Class I area. In

the April 15, 2003 modeling guidelines, EPA classif ied CALPUFF as the preferred air quality

model for distances beyond 50 km from the source an d may be used for impacts less than 50 km

under complex flow conditions on a case-by-case bas is. Consequently, the receptors at the

Glacier NP Class I area are divided into those > 50 km from the source and those within 10-50

km of the source.

Table 1 . Summary of maximum 24-hour actual emissions in p ounds per hour (lb/hr) used

in the Montana BART CALPUFF modeling.

Source SO2 SO4 NOx SOA EC PMC PMF

Cenex-Laurel Refinery 1 

# 13.7 0.0 69.4 0.0 0.0 0.0 4.3

Ashgrove Cement 285.8 19.5 439.2 0.5 0.0 8.3 8.4

Holcim Inc 340.0 7.2 784.0 0.0 0.0 0.2 23.0

Columbia Falls Al 186.3 0.0 2.5 0.0 0.0 0.6 4.9

Exxon Billings Ref 2 

# 16.0 0.0 227.9 0.0 0.0 3.7 3.6

Colstrip Units 1&2 5440.0 217.4 3753.0 54.4 3.4 37.4 27.2

Corette (PPL) 143.0 11.7 76.2 2.3 0.2 2.0 1.5

Smurfit Stone 49.2 0.0 112.9 0.0 0.0 2.5 24.5

Montana Sulfur 744.0 0.0 2.9 0.0 0.0 0.0 0.2

*Company-reported maximum actual 24 hour average em ission rate. Emissions reported here are from

table on website: http://pah.cert.ucr.edu/aqm/308/bart/MTBART_act24_e miss.doc . Emissions used in

modeling were provided by EPA Region 8 and may be d ifferent.

1 

# Recent permit changes may reduce emissions below le vels shown.

2 

# Recent Consent Decree requirements with EPA may red uce emissions below levels shown.-600-500-400-300-200-10001002003004005000100200300400500AshgroveCnxnapColstripCorretteCpcfacglHolcimSmurfitExxonanacbomacamoeacagamoglachecalostmedimimonoabredrsawtscapselwtetothroulbewashyellFigure 1.CALMET/CALPUFF modeling domain and relationship between Montana potential BART-eligible sources andClass I areas.Source = Ashgrove Cement: SO2 = 1,337 TPY; NOx = 1,924 TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003gamo Gates of the Mountains WA 30 5.04 2.94 2.17 222 2.17 1.82 2.52 2.17scap Scapegoat 80 1.33 0.52 0.34 11 0.36 0.42 0.260.35anac Anaconda - Pintler 113 0.43 0.15 0.08 0 0.09 0.09 0.07 0.08boma Bob Marshall 116 1.77 0.42 0.30 6 0.39 0.30 0.18 0.29mimo Mission Mountains WA 162 0.35 0.10 0.05 0 0.050.06 0.04 0.05selw Selway-Bitterroot Wilderness 173 0.09 0.02 0.01 0 0.01 0.01 0.01 0.01yell Yellowstone NP 175 0.07 0.01 0.01 0 0.00 0.010.01 0.01redr Red Rock Lakes 207 0.02 0.00 0.00 0 0.00 0.000.00 0.00glac Theodore Roosevelt NP 223 0.25 0.11 0.05 0 0.10 0.04 0.04 0.06noab North Absaroka Wilderness 228 0.03 0.01 0.00 00.00 0.00 0.00 0.00wash Washakie Wilderness 276 0.01 0.00 0.00 0 0.000.00 0.00 0.00teto Teton Wilderness 289 0.01 0.00 0.00 0 0.00 0.00 0.00 0.00ulbeUL Bend3140.020.000.0000.000.000.000.00camoCabinet Mountains WA3150.010.000.0000.000.000.000.00sawtSawtooth Wilderness3560.000.000.0000.000.000.000.00hecaHells Canyon Wilderness3650.000.000.0000.000.000.000.00eacaEagle Cap Wilderness4260.000.000.0000.000.000.000.00mediMedicine Lake5980.000.000.0000.000.000.000.00throTheodore Roosevelt NP6490.000.000.0000.000.000.000.00lostLostwood7430.000.000.0000.000.000.000.00Source = Cenex-Laurel Refinery: SOx = 60 TPY; NOx= 304 TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003noab North Absaroka Wilderness 113 0.12 0.05 0.04 00.03 0.04 0.03 0.03yell Yellowstone NP 119 0.06 0.03 0.02 0 0.02 0.020.02 0.02wash Washakie Wilderness 150 0.07 0.03 0.02 0 0.020.03 0.01 0.02teto Teton Wilderness 176 0.02 0.01 0.01 0 0.01 0.01 0.00 0.01ulbe UL Bend 211 0.01 0.00 0.00 0 0.00 0.00 0.00 0.00redr Red Rock Lakes 251 0.01 0.00 0.00 0 0.00 0.000.00 0.00gamo Gates of the Mountains WA 263 0.01 0.00 0.00 00.00 0.00 0.00 0.00scapScapegoat3340.000.000.0000.000.000.000.00anacAnaconda - Pintler3440.000.000.0000.000.000.000.00bomaBob Marshall3700.000.000.0000.000.000.000.00mimoMission Mountains WA4230.000.000.0000.000.000.000.00throTheodore Roosevelt NP4230.000.000.0000.000.000.000.00selwSelway-Bitterroot Wilderness4280.000.000.0000.000.000.000.00mediMedicine Lake4490.000.000.0000.000.000.000.00glacTheodore Roosevelt NP4560.000.000.0000.000.000.000.00sawtSawtooth Wilderness5180.000.000.0000.000.000.000.00camoCabinet Mountains WiA5760.000.000.0000.000.000.000.00lostLostwood5770.000.000.0000.000.000.000.00hecaHells Canyon Wilderness6030.000.000.0000.000.000.000.00eacaEagle Cap Wilderness6480.000.000.0000.000.000.000.00Source = Colstrip Units 1&2: SOx = 24,779 TPY; NOx= 16,438 TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003ulbe UL Bend 200 4.69 2.71 1.95 132 2.52 1.93 1.792.08noab North Absaroka Wilderness 254 3.94 2.22 1.30 54 1.17 1.17 1.35 1.23thro Theodore Roosevelt NP 260 6.03 2.60 2.25 176 2.24 2.28 1.95 2.16wash Washakie Wilderness 278 1.93 1.35 0.69 36 0.610.69 0.69 0.67yell Yellowstone NP 281 3.12 1.30 0.74 35 0.74 0.560.86 0.72tetoTeton Wilderness3121.060.500.35100.340.320.370.34mediMedicine Lake3283.262.001.511011.750.891.641.43gamoGates of the Mountains WA4060.460.090.0500.080.070.040.06redrRed Rock Lakes4170.380.080.0400.040.060.030.04lostLostwood4351.901.321.04601.000.751.170.97scapScapegoat4760.240.030.0200.020.020.010.02anacAnaconda - Pintler5080.170.020.0100.010.010.000.01bomaBob Marshall5090.190.030.0200.020.030.010.02mimoMission Mountains WA5680.100.010.0000.010.010.000.00glacTheodore Roosevelt NP5760.160.010.0100.010.010.000.01selwSelway-Bitterroot Wilderness5880.080.010.0000.000.000.000.00sawtSawtooth Wilderness6850.020.000.0000.000.000.000.00camoCabinet Mountains WA7150.030.000.0000.000.000.000.00hecaHells Canyon Wilderness7650.010.000.0000.000.000.000.00eacaEagle Cap Wilderness8160.010.000.0000.000.000.000.00Source = Corette (PPL): SOx = 678 TPY; NOx = 334 TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003noab North Absaroka Wilderness 137 1.60 0.83 0.65 37 0.65 0.74 0.53 0.64yell Yellowstone NP 145 1.03 0.53 0.42 14 0.44 0.450.40 0.43wash Washakie Wilderness 171 0.78 0.56 0.45 15 0.450.53 0.30 0.42ulbe UL Bend 192 2.29 1.02 0.79 41 0.91 0.61 0.68 0.73teto Teton Wilderness 199 0.65 0.23 0.17 1 0.15 0.22 0.11 0.16gamo Gates of the Mountains WA 276 1.55 0.54 0.35 14 0.31 0.52 0.19 0.34redr Red Rock Lakes 277 0.56 0.21 0.14 1 0.08 0.210.09 0.13scapScapegoat3471.700.340.2480.220.310.140.22anacAnaconda - Pintler3641.370.290.1970.110.280.130.18bomaBob Marshall3831.970.340.2260.240.270.130.21throTheodore Roosevelt NP3981.650.730.55280.510.710.440.55mediMedicine Lake4251.090.540.45160.510.330.490.44mimoMission Mountains WA4372.030.250.1430.140.170.100.14selwSelway-Bitterroot Wilderness4492.070.280.1330.070.190.120.12glacGlacier NP4641.130.190.1420.140.180.060.12sawtSawtooth Wilderness5410.190.050.0200.000.050.010.02lostLostwood5520.640.360.2450.240.130.310.23camoCabinet Mountains WA5880.960.080.0510.040.050.050.05hecaHells Canyon Wilderness6200.400.050.0200.000.050.010.02eacaEagle Cap Wilderness6700.200.030.0100.000.020.000.01Source = Columbia Falls Al: SOx = 816 TPY; NOx = 11TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003glac Glacier NP 10-50 5.72 4.40 3.79 434 3.13 4.543.40 3.69glac Glacier NP > 50 0.13 0.03 0.00 0 0.00 0.00 0.02 0.01boma Bob Marshall 76 0.21 0.13 0.11 0 0.10 0.11 0.09 0.10mimo Mission Mountains WA 80 0.21 0.10 0.07 0 0.060.08 0.06 0.07camo Cabinet Mountains WA 111 0.24 0.15 0.11 0 0.110.12 0.10 0.11scap Scapegoat 130 0.11 0.07 0.05 0 0.04 0.05 0.050.05selw Selway-Bitterroot Wilderness 191 0.12 0.04 0.03 0 0.02 0.03 0.03 0.03gamo Gates of the Mountains WA 237 0.07 0.04 0.03 00.03 0.03 0.03 0.03anac Anaconda - Pintler 263 0.08 0.02 0.02 0 0.01 0.02 0.02 0.02hecaHells Canyon Wilderness3450.030.010.0100.010.010.000.01eacaEagle Cap Wilderness4170.020.000.0000.000.000.000.00yellYellowstone NP4350.030.010.0100.000.010.010.01redrRed Rock Lakes4490.020.010.0100.000.010.010.01ulbeUL Bend4580.010.000.0000.000.000.000.00sawtSawtooth Wilderness4690.050.000.0000.000.000.000.00noabNorth Absaroka Wilderness4930.010.010.0000.000.000.000.00washWashakie Wilderness5400.010.000.0000.000.000.000.00tetoTeton Wilderness5530.010.000.0000.000.000.000.00mediMedicine Lake7110.000.000.0000.000.000.000.00throTheodore Roosevelt NP7950.000.000.0000.000.000.000.00lostLostwood8570.000.000.0000.000.000.000.00Source = Exxon Billings Refinery: SOx = 70 TPY; NOx = 998 TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003noab North Absaroka Wilderness 143 0.30 0.12 0.09 00.09 0.10 0.07 0.09yell Yellowstone NP 150 0.16 0.07 0.06 0 0.07 0.050.05 0.06wash Washakie Wilderness 176 0.18 0.07 0.05 0 0.060.07 0.03 0.05ulbe UL Bend 187 0.17 0.09 0.07 0 0.08 0.03 0.07 0.06teto Teton Wilderness 205 0.08 0.03 0.02 0 0.02 0.02 0.01 0.02gamo Gates of the Mountains WA 277 0.15 0.03 0.02 00.01 0.02 0.01 0.01redr Red Rock Lakes 282 0.07 0.01 0.01 0 0.00 0.010.00 0.01scapScapegoat3480.040.000.0000.000.000.000.00anacAnaconda - Pintler3680.040.000.0000.000.000.000.00bomaBob Marshall3840.020.000.0000.000.000.000.00throTheodore Roosevelt NP3930.000.000.0000.000.000.000.00mediMedicine Lake4190.000.000.0000.000.000.000.00mimoMission Mountains WA4380.010.000.0000.000.000.000.00selwSelway-Bitterroot Wilderness4510.010.000.0000.000.000.000.00glacGlacier NP4640.000.000.0000.000.000.000.00lostLostwood5460.000.000.0000.000.000.000.00sawtSawtooth Wilderness5460.000.000.0000.000.000.000.00camoCabinet Mountains WA5890.000.000.0000.000.000.000.00hecaHells Canyon Wilderness6230.000.000.0000.000.000.000.00eacaEagle Cap Wilderness6740.000.000.0000.000.000.000.00Source = Holcim: SOx = 1,521 TPY; NOx = 3,434 TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003yell Yellowstone NP 100 1.55 0.62 0.49 20 0.30 0.520.52 0.44gamo Gates of the Mountains WA 101 2.71 0.95 0.59 29 1.02 0.49 0.66 0.72anac Anaconda - Pintler 132 0.70 0.35 0.21 7 0.23 0.18 0.16 0.19redr Red Rock Lakes 141 1.23 0.32 0.19 3 0.16 0.200.15 0.17scap Scapegoat 154 1.44 0.55 0.25 12 0.28 0.25 0.190.24noab North Absaroka Wilderness 157 1.45 0.44 0.30 70.20 0.27 0.43 0.30boma Bob Marshall 189 1.33 0.41 0.21 8 0.28 0.21 0.10 0.20wash Washakie Wilderness 202 0.35 0.16 0.10 0 0.070.08 0.11 0.09teto Theodore Roosevelt NP 214 0.23 0.10 0.06 0 0.04 0.06 0.08 0.06selw Selway-Bitterroot Wilderness 217 1.56 0.22 0.13 2 0.10 0.15 0.14 0.13mimo Mission Mountains WA 230 1.43 0.20 0.11 5 0.120.12 0.07 0.10glac Glacier NP 298 0.56 0.14 0.10 1 0.11 0.08 0.040.08ulbeUL Bend3180.050.020.0100.010.010.010.01sawtSawtooth Wilderness3380.180.020.0100.000.020.010.01camoCabinet Mountains WA3810.330.040.0200.020.020.010.01hecaHells Canyon Wilderness3880.050.000.0000.000.000.000.00eacaEagle Cap Wilderness4420.020.000.0000.000.000.000.00mediMedicine Lake5970.000.000.0000.000.000.000.00throTheodore Roosevelt NP6140.000.000.0000.000.000.000.00lostLostwood7390.000.000.0000.000.000.000.00Source = Montana Sulfur: SOx = 3,259 TPY; NOx = 13TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003noab North Absaroka Wilderness 143 0.51 0.29 0.20 10.19 0.22 0.20 0.21yell Yellowstone NP 151 0.34 0.20 0.16 0 0.14 0.170.15 0.15wash Washakie Wilderness 176 0.32 0.18 0.13 0 0.130.16 0.10 0.13ulbe UL Bend 187 0.75 0.37 0.28 6 0.30 0.23 0.30 0.28teto Teton Wilderness 205 0.18 0.09 0.07 0 0.05 0.08 0.06 0.06gamo Gates of the Mountains WA 278 0.69 0.20 0.12 10.12 0.19 0.07 0.13redr Red Rock Lakes 282 0.24 0.09 0.05 0 0.04 0.090.04 0.06scapScapegoat3490.750.150.1020.100.120.060.09anacAnaconda - Pintler3680.600.100.0610.050.090.040.06bomaBob Marshall3840.890.130.1020.100.110.060.09throTheodore Roosevelt NP3920.530.230.1710.150.170.130.15mediMedicine Lake4190.420.210.1300.120.090.170.13mimoMission Mountains WA4390.950.080.0510.040.070.040.05selwSelway-Bitterroot Wilderness4520.970.090.0410.030.080.030.05glacGlacier NP4650.530.090.0710.060.080.020.06lostLostwood5460.260.110.0700.060.050.090.07sawtSawtooth Wilderness5470.090.030.0100.000.010.000.01camoCabinet Mountains WA5890.490.040.0200.020.020.010.02hecaHells Canyon Wilderness6240.200.030.0100.000.030.000.01eacaEagle Cap Wilderness6750.100.020.0000.000.010.000.01Source = Smurfit Stone: SOx = 215 TPY; NOx = 495 TPYClass I AreaMinimumDistanceMaxDelta-dv99thDelta-dv98thDelta-dv# Days> 0.5 dv98thPercentile by Year98th3-YearAverage(km)(dv)(dv)(dv)200120022003selw Selway-Bitterroot Wilderness 32 0.98 0.32 0.202 0.17 0.23 0.23 0.21mimo Mission Mountains WA 44 0.99 0.42 0.29 4 0.360.27 0.33 0.32boma Bob Marshall 69 0.54 0.25 0.21 1 0.18 0.17 0.23 0.19scap Scapegoat 89 0.30 0.21 0.18 0 0.12 0.18 0.21 0.17anac Anaconda - Pintler 116 0.21 0.10 0.07 0 0.06 0.06 0.07 0.07camo Cabinet Mountains WA 150 0.24 0.16 0.12 0 0.140.06 0.12 0.11glac Glacier NP 150 0.45 0.20 0.14 0 0.19 0.13 0.130.15gamo Gates of the Mountains WA 173 0.18 0.13 0.09 00.06 0.11 0.08 0.08heca Hells Canyon Wilderness 226 0.05 0.02 0.01 0 0.01 0.01 0.01 0.01eaca Eagle Cap Wilderness 296 0.02 0.00 0.00 0 0.000.00 0.00 0.00redrRed Rock Lakes3120.040.030.0200.010.020.020.02sawtSawtooth Wilderness3120.060.010.0100.000.010.000.01yellYellowstone NP3170.050.030.0200.020.020.020.02noabNorth Absaroka Wilderness3920.030.010.0100.010.010.010.01washWashakie Wilderness4280.020.010.0100.000.010.010.01tetoTeton Wilderness4390.020.010.0000.000.000.000.00ulbeUL Bend4660.010.000.0000.000.000.000.00mediMedicine Lake7430.000.000.0000.000.000.000.00throTheodore Roosevelt NP7990.000.000.0000.000.000.000.00lostLostwood8910.000.000.0000.000.000.000.00