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Combustion of the mined and processed coal will produce all of the emissions outlined above. <br />Since the Deserado Mine is a captive mine, the BLM knows with certainty that all of the coal <br />produced will be used to generate electricity, and further, that the produced coal will be <br />consumed entirely by the previously mentioned Bonanza Power Station in Utah. Just as the <br />mine's electrical consumption data can be utilized in concert with the eGRID data to produce <br />emissions estimates, the same can be done for coal combustion for any production volume if the <br />energy content of the coal is known or can be reasonably estimated. To produce these estimates, <br />BLM staff used the specific eGRID data for the Bonanza Power Station along with EPA <br />facilities emissions data for Bonanza from 2008. The emissions factors from the eGrid data were <br />used to estimate the firing rates (annual heat input) for Bonanza Power Station and derive <br />additional emissions factors (from the EPA facility specific emissions rates for (2008)) for other <br />pollutants that are not accounted for in EPA eGrid data. The heat input was then scaled to the <br />Potential to Emit (PTE) heat input rate based on average energy content of the coal and the <br />maximum production rate of coal the Deserado Mine can achieve under its CDPHE air permit. <br />The PTE heat input and the emissions factors were used to provide a worst case annual estimate <br />of indirect emissions for maximum coal production and are shown in Table 5 below. <br />Table 5. Annual Indirect Criteria and GHG Emissions (tons) <br />Source <br />PM1, <br />PM2.5 <br />VOC <br />CO <br />NOX <br />SO2 <br />CO2 <br />CH4 <br />N2O <br />ElectricityZ <br />Consumption <br />ND <br />ND <br />ND <br />ND <br />52.82 <br />45.81 <br />34,536 <br />0.42 <br />0.53 <br />Coal <br />Combustion <br />771.08 <br />634.37 <br />68.35 <br />564.82 <br />8,522.64 <br />1,188.40 <br />5,019,648 <br />56.79 <br />85.20 <br />(Bonanza) r <br />Total Indirect <br />Emissions <br />771.08 <br />634.37 <br />68.35 <br />564.82 <br />8,522.643 <br />1,188.403 <br />5,019,6483 <br />56.793 <br />85.203 <br />(tons) <br />ND = No Data <br />r Estimates made from 2005 Colorado eGrid data (EPA), and the 2011 electrical consumption data for the mining and rail operations. <br />2 Combustion emissions estimates made from derived firing rate correlations between 2005 Bonanza cGtid data and EPA facility specific <br />emissions for the Bonanza Power Station (2008). <br />3 Electricity production for the haul train and the mine comes from the Bonanza power station therefore emissions for this electricity are included <br />in these totals. <br />DOI- BLM -CO- 110 - 2012 - 0023 -EA 23 <br />