# Summary of Kentucky BART Exemptio n 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 b ext 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 b ext (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- 98 th 

### Percentile Value (8 th 

### 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 b ext 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 98 th 

### Percentile Value (8 th 

### Highest) for the East Kentucky Power Cooperative (EKPC) Cooper Station 1 

### 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 b ext 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 98 th 

### Percentile Value (8 th 

### Highest).



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

### Percentile Value (8 th 

### Highest) for the East Kentucky Power Cooperative (EKPC) Cooper Station 1 

### 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 b ext 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 resu lts reflect a Dry FGD scru bber 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 contro ls will address condensible and directly emitted visibility impairing pollutants.



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