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2018 Monthly DEC Air Emissions2018 Runtime (hrs)Hot Starts Warm Starts Cold Start Stops GENSET 1-12 TOTALS 10475.1 509 335 1427 2271 NOx CO VOC PM10 PM2.5 SO2 NH3 CO2e*MWh pounds pounds pounds pounds pounds pounds pounds tons January 0.0 0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 February 0.0 0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 March 0.0 0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 April 0.0 0 0 0 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 May (commissioning)2449.8 49 12 34 95 1650.8 1731.8 1204.8 2201.4 2201.4 31.8 715.6 8661 16833 June (commissioning)439.2 47 26 102 175 1766.9 1723.4 1135.5 713.0 713.0 15.0 120.9 2742 5284 July (begin ERCOT operations)1481.0 63 98 160 321 3463.6 3276.5 2164.6 1839.7 1839.7 32.6 436.8 12551 26305 August 1539.3 43 32 244 319 4157.6 4101.6 2166.8 1842.0 1842.0 32.2 445.9 12159 25360 September 1033.6 65 19 151 235 2658.7 2667.8 1583.4 1272.6 1272.6 23.4 296.3 7712 15764 October 1633.1 122 36 306 464 5193.5 5144.8 3005.2 2257.6 2257.6 41.6 469.7 11761 23521 November 1433.2 71 79 195 345 3796.5 3654.6 2282.0 1828.3 1828.3 33.4 429.4 8537 17919 December 465.9 49 33 235 317 3585.9 3480.2 1850.6 948.5 948.5 21.5 160.8 2790 5693 Total MWh 136678 Engine Emissions (pounds)26273.5 25780.7 15392.8 12903.1 12903.1 231.3 3075.3 Engine Emissions (tons)13.1 12.9 7.7 6.5 6.5 0.1 1.5 66913 0.71 0.39 0.17 0.04 0.04 0.14 0.00 41 3.31 2.59 0.27 0.24 0.24 0.16 0.00 3077 Tons 17.16 15.87 8.14 6.73 6.73 0.42 1.54 70031 33.80 96.50 48.60 70.00 70.00 1.75 60.90 50.8%16.4%16.7%9.6%9.6%23.8%2.5% Denton Energy Center Emissions by Month DEC Annual Emissions Emergency Diesel Generator* *DEC operates dew point heater and diesel generator under TCEQ permit by rule. Operations Emissions Plant Equipment Emissions (Permit by Rule) Total Plant Emissions DEC Standard Permit Annual Limits Annual to Date Total Plant Emissions per DEC Permit Limit DEC Annual Emissions Dew Point Heater* DEC Total Plant Annual Emission Permit Limits (tons)