# Summary of WRAP RMC BA RT Modeling for Utah

Draft#6 April 21, 2007

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

This document summarizes the preliminar y CALMET/CALPUFF BART modeling results performed by the WRAP RMC for Utah. The procedures used are outlined in the WRAP RMC BART Modeling Protocol that is available at: http://pah.cert.ucr.edu/aqm/308/ba rt/WRAP_RMC_BART_Protocol_Aug15_2006.pdf

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

• Use of three years of modeling of 2001, 2002 and 2003 (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 emi ssions, all PM emissions were modeled

as PM 2.5



### .

• Visibility was calculated us ing the Original IMPROVE equation and Annual Average
Natural Conditions.

The tables that follow contain the following in formation for each Utah BART source unit and
each Class I area that is within at least 300 km of the source:

• The first row contains the source number, na me and SO2 and NOx emissions that were provided by the State.

• Each subsequent row has information on the visi bility impacts at a Class I area, with the columns containing the following information for the indicated Class I area:
1. The Class I area;
2. The distance (km) between the source and the closest receptor in the Class I area (only Class I areas with at least one receptor 300 km or less are included in the tables);
3. The 98 th 

### percentile (8 th 

### highest) visibility impacts in 2001;
4. The 98 th 

### percentile (8 th 

### highest) visibility impacts in 2002;
5. The 98 th 

### percentile (8 th 

### highest) visibility impacts in 2003; and

6. The average of the 98 th 

### percentile across 2001, 2002 and 2003.

Figure 1 below shows the locations of the Hunter (labeled 1) and Huntingt on (labeled 2) sources in Utah and Class I areas in the modeling dom ain. The Hunter Units 1 and 2 and Huntington Units 1 and 2 sources are modeled using curren t emissions (SRC01 through SRC04) and future controlled emission levels (SRC05 through SRC08).-1600 -1400 -1200 -1000 -800 -500 -400 -300 -200 -100 0 100 200 300 400 500 600

Hunter 1 & 2 

### brid crmo

eane fitz

fito grte

jarb

mozi noab redr sawt

teto wash

yell

Huntington 3 & 4 

### arch

brca 

### cany care

grca laga mabe

maza meve

pefo pimo sape

syca 

### weel

wemi zion blca

Figure 1. Relationship between Utah potential BART-eligible sources and Class I areas. Hunter Units 1 and 2 and Huntington Units 1 and 2 modeled separate using uncontrolled (SRC01-SRC04) and controlled (SRC05-SRC8) emissions.Table 1.Hunter and Huntington Units 1 and 2 current and future controlled emission levels. Modeling was performed using samestack parameters in current and future conditions.Current Plant Configurations* = Calculated Based on Permit LimitActual Emissions * - 1 hour Values (lb/hr) for 2002-2003 24-hour Max. Emission DayPlantUnitSO2NOXPMHunter (SRC01)11402230983.25Hunter (SRC02)21427192483.25Huntington (SRC03)115551887166.9Huntington (SRC04)25537191276.1Current Plant Stack ParametersPlantUnitStack Location(UTM)Stack Height (m)Stack Diameter (m)Exit Velocity (m/s)Hunter (SRC01)1497310/4335950182.97.3217.6Hunter (SRC02)2497360/4335950182.97.3218.2Huntington (SRC03)1493100/4358840182.97.3216.9Huntington (SRC04)2493150/4358840182.97.3220.1Future ConfigurationsCalculated 1-hr Emissions in lb/hr - Using Maximum Boiler Capacity and Proposed Permitted Emissions LimitsChanged emission rates to reflected "permitted" not "best expected" ratesHuntington 2 emission rates are listed in the AOfor the Huntington 2 pollution control projectsPlantUnitSO2NOXPMHunter (SRC05)1199.8432.924.975Hunter (SRC06)2199.8432.924.975Huntington (SRC07)1203.90441.7970Huntington (SRC08)2182.64395.7270Permitted Rates (lb/mmBTU)0.120.260.15BACT Presumptive Rates0.150.28UT SRC01 Current Hunter Unit #1: SO2 = 6,141 TPY; NOx = 10,113 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 75 1.55 2.63 2.20 2.13 Canyonlands National Park 105 2.02 1.60 1.97 1.87

Arches National Park 119 1.73 1.25 1.61 1.53 Bryce Canyon National Park 187 0.64 0.69 0.32 0.55

Zion National Park 258 0.67 0.50 0.20 0.46 Grand Canyon National Park 273 0.57 0.77 0.43 0.59 Black Canyon of the Gunnison W ilderness Area 281 0.67 0.60 0.55 0.60

Mesa Verde National Park 300 0.64 0.52 0.44 0.53

UT SRC02 Current Hunter Unit #2: SO2 = 6,250 TPY; NOx = 8,427 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 75 1.43 2.33 1.93 1.89 Canyonlands National Park 105 1.68 1.42 1.77 1.62

Arches National Park 119 1.51 1.17 1.42 1.36 Bryce Canyon National Park 187 0.54 0.60 0.28 0.47

Zion National Park 258 0.59 0.46 0.19 0.41 Grand Canyon National Park 273 0.52 0.69 0.36 0.52 Black Canyon of the Gunnison W ilderness Area 281 0.59 0.53 0.48 0.53

Mesa Verde National Park 300 0.57 0.45 0.38 0.47

UT SRC03 Current Huntington Unit #1: SO2 = 6,811 TPY; NOx = 8,265 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 74 1.43 2.40 1.93 1.92 Canyonlands National Park 105 1.68 1.51 1.75 1.64

Arches National Park 119 1.52 1.16 1.50 1.39 Bryce Canyon National Park 186 0.53 0.62 0.29 0.48

Zion National Park 257 0.61 0.49 0.20 0.43 Grand Canyon National Park 272 0.54 0.72 0.39 0.55 Black Canyon of the Gunnison W ilderness Area 282 0.60 0.56 0.51 0.56

Mesa Verde National Park 300 0.58 0.46 0.41 0.48UT SRC04 current Huntington Unit #2: SO2 = 24,252 TPY; NOx = 8375 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 74 1.98 2.85 2.47 2.43 Canyonlands National Park 105 2.06 2.22 2.51 2.26

Arches National Park 119 1.74 1.88 2.04 1.89 Bryce Canyon National Park 186 0.98 1.14 0.60 0.91

Zion National Park 257 1.01 0.83 0.51 0.78 Grand Canyon National Park 272 0.94 1.27 0.76 0.99 Black Canyon of the Gunnison W ilderness Area 282 1.26 1.12 1.03 1.14

Mesa Verde National Park 300 1.12 0.81 0.81 0.91

UT SRC05 Controlled Hunter Unit #1: SO2 = 875 TPY; NOx = 1896 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 75 0.01 0.02 0.02 0.02 Canyonlands National Park 105 0.02 0.01 0.02 0.02

Arches National Park 119 0.01 0.01 0.01 0.01 Bryce Canyon National Park 187 0.01 0.01 0.00 0.00

Zion National Park 258 0.01 0.00 0.00 0.00 Grand Canyon National Park 273 0.00 0.01 0.00 0.00 Black Canyon of the Gunnison W ilderness Area 281 0.01 0.00 0.00 0.00

Mesa Verde National Park 300 0.01 0.00 0.00 0.00

UT SRC06 Controlled Hunter Unit #2: SO2 = 875 TPY; NOx = 1896 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 75 0.01 0.02 0.02 0.02 Canyonlands National Park 105 0.02 0.01 0.02 0.01

Arches National Park 119 0.01 0.01 0.01 0.01 Bryce Canyon National Park 187 0.01 0.01 0.00 0.00

Zion National Park 258 0.01 0.00 0.00 0.00 Grand Canyon National Park 273 0.00 0.01 0.00 0.00 Black Canyon of the Gunnison W ilderness Area 281 0.01 0.00 0.00 0.00

Mesa Verde National Park 300 0.01 0.00 0.00 0.00UT SRC07 Controlled Huntington Unit #1: SO2 = 893 TPY; NOx = 1935 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 74 0.01 0.02 0.02 0.02 Canyonlands National Park 105 0.02 0.01 0.02 0.02

Arches National Park 119 0.01 0.01 0.01 0.01 Bryce Canyon National Park 186 0.01 0.01 0.00 0.00

Zion National Park 257 0.01 0.00 0.00 0.00 Grand Canyon National Park 272 0.00 0.01 0.00 0.00 Black Canyon of the Gunnison W ilderness Area 282 0.01 0.01 0.00 0.01

Mesa Verde National Park 300 0.01 0.00 0.00 0.00

UT SRC08 Controlled Huntington Unit #2: SO2 = 800 TPY; NOx = 1,733 TPY Annual Average Natural Conditions Class I Areas with at least 1 receptor within 300 km of source
Minimum
Distance 98th percentile for each year 98th

(km) 2001 2002 2003 3 year
AVG Capitol Reef National Park 74 0.01 0.02 0.01 0.01 Canyonlands National Park 105 0.01 0.01 0.01 0.01

Arches National Park 119 0.01 0.01 0.01 0.01 Bryce Canyon National Park 186 0.01 0.01 0.00 0.00

Zion National Park 257 0.00 0.00 0.00 0.00 Grand Canyon National Park 272 0.00 0.01 0.00 0.00 Black Canyon of the Gunnison W ilderness Area 282 0.01 0.00 0.00 0.00

Mesa Verde National Park 300 0.00 0.00 0.00 0.00