Analysis of 2007 Emissions from Power Plants and Other ... - MARAMA

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March 2011Page 40Analysis of Emissions from Power Plants and Other Large Combustion SourcesFigure 7-3. NOx Daily Emissions by Combustion TypeComprising the Daily NOx Emissions Sorted by Region-Wide NOx MassMay 1, 2007 – September 30, 2007.Figure 7-4. NOx Daily Emissions by Combustion Typefor 6 High Ozone Episode Days in 2007.
Analysis of Emissions from Power Plants and Other Large Combustion Sources March 2011Page 418 Geographic Variation in Fuel Types and Combustion TechnologyDo the patterns in Question 7 vary by State?The previous section showed MANE-VU+VA variations in NOx emissions by fuel typeand combustion type. This sections provides that same analysis but subdivides theMANE-VU+VA region into three parts – USEPA Region 1 States (CT, MA, ME, NH, RI,VT), Region 2 States (NJ, NY), and Region 3 States (DC, DE, MD, PA, all of VA, butexcludes WV).Figure 8-1 shows the NOx daily emissions by fuel type, sorted from lowest emission dayto highest emission day for the period May 1 to September 30, 2007. On a relative basis,the NOx emissions in the Region 1 and 2 States result from a mix of coal, residual oil,diesel, and natural gas. The dominant fuel in the Region 3 States is coal. On the lowestemission days in Region 1, coal is the dominant fuel type. On the highest NOx emissiondays in Region 1, NOx emissions from residual oil combustion exceed the emissions fromcoal combustion. Region 2 States see increases in NOx emissions from residual oil, dieseloil and natural gas during high NOx emission days. Region 3 States also see increases inNOx emissions from residual oil during high NOx emission days, but the emissions onhigh NOx emission days still are dominated by coal combustion.The above patterns are shown more clearly in Figure 8-2, which shows the NOx dailyemissions by fuel type for six high ozone days in 2007. Region 1 States have relativelyhigh emissions from residual fuel units on high ozone days. All four fuel types haverelatively important contributions in Region 2 States on high ozone days. Region 3 Stateshave some contribution from residual oil on high ozone days, but coal still predominates.Figure 8-3 shows the NOx daily emissions by combustion unit type, sorted from lowestemission day to highest emission day for the period May 1 to September 30, 2007. NOxemissions from combustion turbines in Region 2 States become more important on highNOx emission days.Figure 8-4 shows the NOx daily emissions by combustion unit type for six high ozone daysin 2007. Again, NOx emissions from combustion turbines in Region 2 States becomemore important on high ozone days.
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State Primary Fuel NOx ControlCapac
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State Primary Fuel NOx ControlMDCoa
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State Primary Fuel NOx ControlCapac
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State Primary Fuel NOx ControlPAPAC
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State Primary Fuel NOx ControlReduc
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Table 13-2. Capacity percentages by
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State Primary Fuel SO 2 ControlCapa
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FIPS State Component NameCSACodeCSA
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March 2011Page B-2Draft Analysis of
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Analysis of 2007 Emissions from Power Plants and Other ... - MARAMA

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