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

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March 2011Page 80Analysis of Emissions from Power Plants and Other Large Combustion SourcesI-95 Corridor Areas are shown in red fill and include the following six CSAs:Portland-Lewiston-South Portland, MEBoston-Worcester-Manchester, MA-RI-NHHartford-West Hartford-Willimantic, CTNew York-Newark-Bridgeport, NY-NJ-CT-PAPhiladelphia-Camden-Vineland, PA-NJ-DE-MDWashington-Baltimore-Northern Virginia, DC-MD-VA-WVFigure 11-7. Annual SO 2 Emitted in I-95 Corridor AreasCompared to Other Geographical Areas in the Northeast / Mid-Atlantic Region.
Analysis of Emissions from Power Plants and Other Large Combustion Sources March 2011Page 8112 Analysis of Unit DowntimeFor units that operated more than 50% of the time in 2007, identify units that (a) did notoperate during any day in any air pollution episodes (was down for an entire day) or (b)that operated at less than 33% of the 2007 average daily heat input rate for that unitduring any day in any air pollution episodes (i.e., unit was operating at an abnormallylow rate).We reviewed the 2007 CAMD hourly data for each unit in the MANE-VU+VA region todetermine which ones were non-operational or operating at an abnormally low rate relativeto average daily heat input rates. To be included in the analyses, units must have operatedfor more than 182.5 days (based on 4380 hours per year). Units that may have operated onmore than 182.5 days of the year but for less than 4380 hours were not included in theseanalyses.Using the data and calculations noted above, we identified numerous units the MANE-VU+VA region where units online for more than 50% of the hours of the calendar year2007 were shut down for entire days at a time or operated at levels lower than 33% of theaverage daily heat input rate. The list provided in Table 12-1 below indicates the numberof units in each State meeting these constraints. Table 12-2 provides the individual unitsand the number of days for which they meet these constraints. Table 12-3 provides theindividual units and calendar days for which these units met the constraints.Table 12-1. State counts of non- or low-operating units in 2007 based on CEM heat input.State
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Analysis of 2007 Emissions from Power Plants and Other ... - MARAMA

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