Summary of Kentucky BART Exemption and BART Determination Modeling 

Results For Kentucky BART-Eligible and BART-Subject Sources 

June 2008 

 (Amended May 2010)

Kentucky BART Exemption Modeling: 

Table 1-1. Summary of Visibility Results – for Duke Energy East Bend Station - Rabbit Hash, 

Kentucky – Screening Run (12-km grid) – Performed by Source Contractor

Class I Area 

(Est. Distance from Source) 2001 2002 2003 Annual average 

background bext

Maximum delta-deciview, (# days>0.5 dv, # days >1 dv) (Mm-1) 

Mammoth Cave (210 km) 0.197 (0, 0) 0.242 (0, 0) 0.227 (0, 0) 21.58 

20% Best Days 

background bext (Mm-1)

Mammoth Cave (210 km) 0.289 (0, 0) 0.354 (0, 0) 0.331 (0, 0) 14.7 

Table 1-2. Summary of Visibility Results- 98th Percentile Value (8th Highest) for Owensboro 

Municipal Utilities (OMU) – Owensboro, Kentucky – Refined Run (4-km grid, 

Subdomain-3)-Performed by Source Contractor 

Class I Area 

(Est. Distance from Source) 2001 2002 2003 

Annual 

average 

background 

bext

Maximum delta-deciview, (# days>0.5 dv, # days >1 dv) (Mm-1) 

Mammoth Cave (93 km) 0.432 (5, 0) 0.387 (4, 0) 0.400 (3, 0) 21.58 

Mingo (289 km) 0.043 (0, 0) 0.048 (0, 0) 0.053 (0, 0) 21.03 

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Table 1-23a. Before Controls Applied, Summary of Visibility Results for 98th Percentile Value 

(8th Highest) for the East Kentucky Power Cooperative (EKPC) Cooper Station1 in 

Pulaski County, Kentucky – Refined Run (4-km grid, Subdomain-3) – Performed by 

Source Contractor 

Class I Area 

(Est. Distance from Source) 2001 2002 2003 

Annual 

average 

background 

bext

Maximum delta-deciview, (# days>0.5 dv, # days >1 dv) (Mm-1) 

Mammoth Cave (130) km) 5.810 (58, 48) 7.376 (68, 51) 6.749 (47, 40) 21.58 

Great Smokey Mt. (162 km) 6.763 (117, 89) 5.966 (103, 79) 5.662 (97, 71) 21.39 

Joyce Kilmer-Slickrock (178 km) 4.974 (79, 53) 4.248 (74, 51) 2.781 (64, 44) 21.40 

Cohutta (221 km) 3.192 (60, 44) 3.363 (66, 36) 2.317 (63, 45) 21.40 

Shinning Rock (233 km) 2.022 (53, 35) 1.565 (39, 19) 1.804 (50, 27) 21.40 

Linville Gorge (267 km) 1.778 (43, 21) 1.599 (38, 16) 1.885 (50, 24) 21.36 

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BART Determination Modeling was required since this source exceeded the 0.5 dv threshold for the 98th

Percentile Value (8th Highest). 

Table 1-23b. With BART Determination Controls Applied, Summary of Visibility Results for 98th

Percentile Value (8th Highest) for the East Kentucky Power Cooperative (EKPC) 

Cooper Station1

 in Pulaski County, Kentucky – Refined Run (4-km grid, 

Subdomain-3) – Performed by Source Contractor 

Class I Area 

(Est. Distance from Source) 2001 2002 2003 

Annual 

average 

background 

bext

Maximum delta-deciview, (# days>0.5 dv, # days >1 dv) (Mm-1) 

Mammoth Cave (130) km) 0.141 (0, 0) 0.201 (0, 0) 0.170 (0, 0) 21.58 

Great Smokey Mt. (162 km) 0.192 (0, 0) 0.150 (0, 0) 0.171 (0, 0) 21.39 

Joyce Kilmer-Slickrock (178 km) 0.115 (0, 0) 0.119 (0, 0) 0.102 (0, 0) 21.40 

Cohutta (221 km) 0.068 (0, 0) 0.080 (0, 0) 0.079 (0, 0) 21.40 

Shinning Rock (233 km) 0.045 (0, 0) 0.039 (0, 0) 0.047 (0, 0) 21.40 

Linville Gorge (267 km) 0.046 (0, 0) 0.041 (0, 0) 0.047 (0, 0) 21.36 

1

 Per the source BART Determination, the above results reflect a Dry FGD scrubber and Fabric Filtration 

controls to be installed on EKPC Cooper Units 1 and 2 for BART and per applicable provisions of the 

EKPC consent decree. These controls will address condensible and directly emitted visibility impairing 

pollutants. 

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