### NC1

**Modeling Scenarios for BA RT A** **naly sis** 

**Ma ximum**  **24-h avg. actual Filterable** ** **heat input*** **SO2 E.F. NOx E.F.**  **PM E. F.**  **SO2 NOx**  **PM (MMBtu/hr)**  **(lb/mmBtu) (lb/mmBtu)**  **(lb/mmBtu)** no control none ESP 6441.4 0.857 0.603 0.03660 no control LNB/OFA ESP 6441.4 0.857 0.23 0.03660 SDA LNB/OFA FF 6441.4 0.15 0.23 0.00823 SDA LNB/OFA+SCR FF 6441.4 0.15 0.08 0.00823 SDA none FF 6441.4 0.15 0.603 0.00823

* Maximum daily

heat input for 2001 - may not coincide with 24-hour maximum SO2 and NOx emissions in 2001. ** Filterable PM em issions after FF based on NPPD stack tests. Condensable PM emissions assumed to be 0.014 lb/mmBtu, based on AP-42 and 0.44% sulfur.

**Control Description SO2**  **NOx PM**  **C PM**  **F Temp.**  **Vel.**

**(g/sec) (g/sec)**  **(g/sec) (g/sec)**  **(deg. K) (m/sec)**  695.71 489.62 11.88 21.02 467.05 18.47 695.71 186.67 11.88 21.02 467.05 18.47 121.74 186.67 2.14 13.77 352.04 24.08 121.74 64.93 2.14 13.77 352.04 24.08 121.74 489.62 2.14 13.77 352.04 24.08

* Maximum daily

heat input for 2001 - may not coincide with 24-hour maximum SO2 and NOx emissions in 2001. ** Filterable PM em issions after FF based on NPPD stack tests. Condensable PM emissions assumed to be 0.014 lb/mmBtu, based on AP-42 and 0.44% sulfur. **Modeled Emissions Stack Parameters** **Nebraska City Station Unit 1 (OPPD) Regional Haze, BA** **RT-Subject Modeling, Summary of CA LPUFF Visibility Impacts**  **Predicted 24-hour Values in Deciviews**

**BA SELINE Scenario** 

**# Exceed. 8th-High**  **# Exceed. 8th-High**  **# Exceed. 8th-High**  Badlands (SD) 7 0.332 2 0.126 2 0.225 Great Sand Dunes (CO) 0 0.009 0 0.019 0 0.036 Hercules Glades (MO) 14 0.933 9 0.556 6 0.473 Mingo (MO) 4 0.374 5 0.371 2 0.305 Rocky Mountain (CO) 0 0.01 0 0.043 2 0.047 Wichita Mountains (OK) 4 0.306 5 0.381 10 0.686 Wind Cave (SD) 4 0.095 1 0.050 1 0.111

Notes: 1) Exceedances are the number of annual values exceeding the threshold of 0.5 deciviews 2) The 8th-high values represent the 98th percentile value in a year, and are reported in units of deciviews. **Class I A rea**  **Year of Meteorology 2001**  **2002 2003** **Nebraska City Station Unit 1 (OPPD)**

**Regional Haze, BA RT-Subject Modeling, Summary of CA** **LPUFF Visibility Impacts Predicted 24-hour Values in Deciviews** 

**LNB/OFA**

**# Exceed. 8th-High**  **# Exceed. 8th-High**  **# Exceed. 8th-High**  Badlands (SD) 5 0.258 0 0.09 0 0.182 Great Sand Dunes (CO) 0 0.007 0 0.016 0 0.03 Hercules Glades (MO) 9 0.621 2 0.358 1 0.324 Mingo (MO) 1 0.269 2 0.232 1 0.212 Rocky Mountain (CO) 0 0.009 0 0.033 2 0.036 Wichita Mountains (OK) 2 0.233 1 0.275 9 0.524 Wind Cave (SD) 2 0.08 0 0.044 0 0.105

Notes: 1) Exceedances are the number of annual values exceeding the threshold of 0.5 deciviews 2) The 8th-high values represent the 98th percentile value in a year, and are reported in units of deciviews. **Class I A rea**  **Year of Meteorology 2001**  **2002 2003** **Nebraska City Station Unit 1 (OPPD)**

**Regional Haze, BA RT-Subject Modeling, Summary of CA** **LPUFF Visibility Impacts Predicted 24-hour Values in Deciviews** 

**SDA + LNB/OFA** 

**# Exceed. 8th-High**  **# Exceed. 8th-High**  **# Exceed. 8th-High**  Badlands (SD) 1 0.084 0 0.043 0 0.051 Great Sand Dunes (CO) 0 0.002 0 0.003 0 0.007 Hercules Glades (MO) 0 0.233 1 0.159 0 0.14 Mingo (MO) 0 0.095 0 0.103 0 0.08 Rocky Mountain (CO) 0 0.002 0 0.009 0 0.011 Wichita Mountains (OK) 0 0.069 0 0.109 2 0.165 Wind Cave (SD) 0 0.022 0 0.014 0 0.028

Notes: 1) Exceedances are the number of annual values exceeding the threshold of 0.5 deciviews 2) The 8th-high values represent the 98th percentile value in a year, and are reported in units of deciviews. **Class I A rea**  **Year of Meteorology 2001**  **2002 2003** **Nebraska City Station Unit 1 (OPPD)**

**Regional Haze, BA RT-Subject Modeling, Summary of CA** **LPUFF Visibility Impacts Predicted 24-hour Values in Deciviews**  **SDA + LNB/OFA** 

**+ SCR**

**# Exceed. 8th-High**  **# Exceed. 8th-High**  **# Exceed. 8th-High**  Badlands (SD) 1 0.055 0 0.026 0 0.031 Great Sand Dunes (CO) 0 0.001 0 0.003 0 0.006 Hercules Glades (MO) 0 0.14 0 0.084 0 0.072 Mingo (MO) 0 0.064 0 0.049 0 0.052 Rocky Mountain (CO) 0 0.002 0 0.007 0 0.007 Wichita Mountains (OK) 0 0.053 0 0.063 0 0.112 Wind Cave (SD) 0 0.016 0 0.010 0 0.018

Notes: 1) Exceedances are the number of annual values exceeding the threshold of 0.5 deciviews 2) The 8th-high values represent the 98th percentile value in a year, and are reported in units of deciviews. **Class I A rea**  **Year of Meteorology 2001**  **2002 2003** **Nebraska City Station Unit 1 (OPPD)**

**Regional Haze, BA RT-Subject Modeling, Summary of CA** **LPUFF Visibility Impacts Predicted 24-hour Values in Deciviews** 

**SDA**

**# Exceed. 8th-High**  **# Exceed. 8th-High**  **# Exceed. 8th-High**  Badlands (SD) 4 0.16 0 0.07 0 0.077 Great Sand Dunes (CO) 0 0.003 0 0.004 0 0.014 Hercules Glades (MO) 8 0.53 4 0.355 1 0.308 Mingo (MO) 1 0.2 0 0.236 1 0.147 Rocky Mountain (CO) 0 0.003 0 0.013 1 0.021 Wichita Mountains (OK) 2 0.153 1 0.205 6 0.331 Wind Cave (SD) 2 0.038 0 0.024 0 0.05

Notes: 1) Exceedances are the number of annual values exceeding the threshold of 0.5 deciviews 2) The 8th-high values represent the 98th percentile value in a year, and are reported in units of deciviews. **Class I A rea**  **Year of Meteorology 2001**  **2002 2003**