Data Source: Clean Air Markets Division Air Program Markets Data Tool (publicly accessible at http://ampd.epa.gov/ampd/)

State Facility Name Facility ID (ORISPL) Unit ID Year SO2 (tons) Avg. NOx

Rate (lb/MMBtu) NOx

(tons) Heat Input

(MMBtu) Operating

Time # of

Months Reported Gross

Load (MWh) Unit Type SO2 Control(s) NOx Control(s) PM Control(s) WY Dave Johnston 4158BW41 2000 3724.409 0.4311 2153.422 9875669.542 8341.78 12 915159.7Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2001 3732.681 0.4387 2259.654 1.03E+07 8567.79 12 932820.7Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2002 3851.296 0.4737 2341.398 9859291.496 8495.96 12 886650.5 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2003 3416.012 0.4523 1993.66 8724168.297 7919.64 12 802965.3 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2004 3071.044 0.4379 2111.422 9574719.36 8414.34 12 887155.1Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2005 3287.734 0.4536 2245.446 9868691.278 8458.51 12 913725.8Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2006 3895.134 0.4683 2428.1 1.03E+07 8548.45 12 899310.4Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2007 3831.598 0.4467 2273.715 1.01E+07 8470.81 12 876158.4Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2008 3443.043 0.4421 1983.347 8908501.74 7792.9 12 790372.2 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2009 3681.031 0.401 1937.828 9614296.895 8684.53 12 891765.8Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2010 3034.792 0.3774 1439.08 7554286.611 8581.08 12 739058Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2011 3084.758 0.3864 1513.296 7752271.055 8607.07 12 750740.1Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW41 2012 1379.376 0.3887 714.156 3630780.089 3977.77 6 352388.9Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2000 3693.226 0.4214 2080.582 9725423.755 7973.5 12 864267.3 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2001 3395.338 0.4292 2025.349 9389437.526 8466.55 12 915004Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2002 4159.846 0.455 2298.038 1.01E+07 8654.93 12 917959.1Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2003 3924.415 0.4376 2191.427 9988891.534 8660.67 12 896629.6Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2004 3001.544 0.4477 2128.004 9441333.666 8396.72 12 880329.2 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2005 3395.383 0.4532 2289.592 1.01E+07 8663.73 12 908040.8Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2006 3937.787 0.46 2404.77 1.05E+07 8760 12 886802 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2007 3637.202 0.4382 2064.854 9298786.39 7527.43 12 788956.9Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2008 3401.467 0.4514 2023.394 8855966.102 7848.6 12 830439.2 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2009 3626.982 0.4525 2124.258 9377357.269 8660.66 12 917446.8Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2010 3252.562 0.4523 1865.768 8163847.39 8495.85 12 768438.5 Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2011 3400.541 0.4273 1824.099 8404001.156 8455.66 12 795646.9Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW42 2012 1655.442 0.4281 939.276 4340610.706 4357.37 6 404341.9Dry bottom wall-fired boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2000 6283.533 0.5638 5791.84 2.02E+07 8067.73 12 1863270Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2001 5981.326 0.521 4834.257 1.83E+07 8028.63 12 1810932Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2002 6113.611 0.5013 5027.037 1.98E+07 8187.64 12 1865760Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2003 7313.519 0.5124 5057.173 1.95E+07 8063.15 12 1800541Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2004 8433.004 0.4983 4931.449 1.95E+07 8098.77 12 1781740Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2005 7685.205 0.4937 4602.593 1.84E+07 7658.09 12 1674398Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2006 9060.756 0.5135 5346.613 2.07E+07 8545.33 12 1899064Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2007 7893.669 0.4893 5171.565 2.09E+07 8490.16 12 1904415Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2008 7476.173 0.5058 5301.616 2.08E+07 8629.52 12 1958335Cell burner boiler Electrostatic Precipitator WY Dave Johnston 4158BW43 2009 7177.737 0.4936 4689.307 1.89E+07 8329.45 12 1836832Cell burner boiler Electrostatic Precipitator

WY Dave Johnston 4158BW43 2010 1842.608 0.3028 1877.072 1.18E+07 6114.31 12 1171009Cell burner boiler (Ended May 18, 2010), Dry bottom wall-fired boiler (Started May 18, 2010) Dry Lime FGD (Began May 29, 2010) Low NOx Burner Technology w/ Overfire Air (Began May 23, 2010) Electrostatic Precipitator (Retired May 29, 2010)<br>Baghouse (Began May 29, 2010) WY Dave Johnston 4158BW43 2011 648.099 0.2261 1990.342 1.74E+07 8494.91 12 1701372 Dry bottom wall-fired boiler Dry Lime FGD Low NOx Burner Technology w/ Overfire Air Baghouse WY Dave Johnston 4158BW43 2012 312.589 0.2128 850.162 7863630.461 4109.21 6 777061.4Dry bottom wall-fired boiler Dry Lime FGD Low NOx Burner Technology w/ Overfire Air Baghouse WY Dave Johnston 4158BW44 2000 5684.768 0.407 6566.876 3.20E+07 7822.49 12 2495950Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2001 5461.514 0.3374 4788.221 2.79E+07 7538.26 12 2455749Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2002 5852.926 0.3638 5352.534 2.91E+07 8033.63 12 2595410Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2003 4386.685 0.3974 5270.734 2.61E+07 6940.3 12 2253591Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2004 4310.023 0.3526 5416.553 3.05E+07 8050.93 12 2764620Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2005 5382.373 0.3526 5583.537 3.12E+07 7945.83 12 2644759Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2006 5457.133 0.3698 6277.649 3.36E+07 8221.51 12 2590745Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2007 5992.987 0.2396 4068.334 3.35E+07 8227.42 12 2637707Tangentially-fired Other Wet Scrubber WY Dave Johnston 4158BW44 2008 5213.554 0.2233 3291.148 2.93E+07 8224.21 12 2565037Tangentially-fired Other Wet Scrubber

WY Dave Johnston 4158BW44 2009 3291.678 0.1762 1768.917 2.00E+07 6047.43 12 1794428Tangentially-fired Other Low NOx Burner Technology w/ Separated OFA (Began Jun 12, 2009) Wet Scrubber WY Dave Johnston 4158BW44 2010 5191.529 0.145 2165.223 2.97E+07 8246.81 12 2454422Tangentially-fired Other Low NOx Burner Technology w/ Separated OFA Wet Scrubber WY Dave Johnston 4158BW44 2011 4172.31 0.1413 1852.813 2.58E+07 7993.84 12 2297040Tangentially-fired Other Low NOx Burner Technology w/ Separated OFA Wet Scrubber

WY Dave Johnston 4158BW44 2012 1079.795 0.1833 1041.477 1.02E+07 3295.66 6 927481.2Tangentially-fired Other (Retired Apr 22, 2012)<br>Dry Lime FGD (Began Apr 23, 2012) Low NOx Burner Technology w/ Separated OFA Wet Scrubber (Retired Apr 22, 2012)<br>Baghouse (Began Apr 23, 2012) WY Jim Bridger 8066BW71 2000 6818.076 0.3969 9510.881 4.76E+07 8266.76 12 4437740Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator

Page 1 of 5State Facility Name Facility ID (ORISPL) Unit ID Year SO2 (tons) Avg. NOx

Rate (lb/MMBtu) NOx

(tons) Heat Input

(MMBtu) Operating

Time # of

Months Reported Gross

Load (MWh) Unit Type SO2 Control(s) NOx Control(s) PM Control(s) WY Jim Bridger 8066BW71 2001 6583.379 0.3933 9389.829 4.72E+07 8400.05 12 4367946Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2002 4812.782 0.3787 7412.846 3.81E+07 7437.73 12 3588344Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2003 6197.8 0.383 8494.473 4.37E+07 8246.01 12 4092747Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2004 6875.292 0.4293 9635.316 4.44E+07 8353.85 12 4278130Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2005 6700.784 0.4246 8894.295 4.12E+07 8226.01 12 4119375Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2006 5062.04 0.4062 7479.952 3.57E+07 7195.41 12 3615611Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2007 5907.784 0.3954 8670.652 4.32E+07 8330.87 12 4331301Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2008 5319.916 0.3933 8218.588 4.09E+07 8130.9 12 4101207Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2009 5730.612 0.3738 7681.768 4.00E+07 8142.4 12 4127213Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2010 2683.047 0.2544 3927.348 2.96E+07 6314.95 12 3196123Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2011 2303.158 0.1929 3356.201 3.42E+07 8127.25 12 3595752Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW71 2012 1073.006 0.1795 1440.778 1.58E+07 4026.66 6 1676551Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2000 5686.296 0.3937 9413.392 4.71E+07 8422.87 12 4427336Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2001 5958.37 0.3529 7568.172 4.19E+07 7692.18 12 3854956Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2002 5246.321 0.3572 7358.514 4.03E+07 7964.97 12 3970025Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2003 5923.908 0.3798 7798.07 4.05E+07 8060.67 12 4102529Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2004 6615.973 0.4516 9668.125 4.18E+07 8114.6 12 3930343Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2005 5100.572 0.2813 4822.074 3.42E+07 6971.47 12 3395339Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2006 5734.402 0.2157 4531.388 4.17E+07 8355.11 12 4265967Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2007 5516.701 0.2288 4681.734 4.04E+07 7862.9 12 4077352Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2008 5831.297 0.2165 4671.208 4.31E+07 8353.81 12 4260263Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2009 3302.176 0.2077 3879.079 3.67E+07 6949.52 12 3546041Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2010 3030.32 0.1996 4584.911 4.55E+07 8507.47 12 4311939Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2011 2481.694 0.1853 3367.437 3.55E+07 7964.04 12 3476658Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW72 2012 1076.111 0.1792 1392.139 1.52E+07 3534.44 6 1454994Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2000 4985.085 0.3692 8492.476 4.57E+07 8622 12 4480146Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2001 6378.038 0.3621 8344.948 4.55E+07 8493.35 12 4363132Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2002 6738.09 0.3614 8312.932 4.52E+07 8428.01 12 4207347Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2003 5302.279 0.3697 6851.58 3.58E+07 7108.4 12 3311199Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2004 6038.938 0.4546 9970.076 4.27E+07 7931.94 12 3897058Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2005 6382.987 0.4402 9743.253 4.34E+07 8265.09 12 4162107Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2006 5950.32 0.4051 8073.129 3.90E+07 8343.92 12 4123659Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2007 5122.85 0.2718 4689.46 3.41E+07 6885.31 12 3523987Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator

Page 2 of 5State Facility Name Facility ID (ORISPL) Unit ID Year SO2 (tons) Avg. NOx

Rate (lb/MMBtu) NOx

(tons) Heat Input

(MMBtu) Operating

Time # of

Months Reported Gross

Load (MWh) Unit Type SO2 Control(s) NOx Control(s) PM Control(s) WY Jim Bridger 8066BW73 2008 6125.089 0.2122 4486.642 4.22E+07 8427.19 12 4436465Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2009 5847.394 0.2011 4195.686 4.13E+07 8398.11 12 4294403Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2010 5284.319 0.2076 4210.728 4.01E+07 8208.8 12 4184067Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2011 2525.784 0.1977 2856.538 2.81E+07 6748.5 12 2928226Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW73 2012 1202.407 0.1937 1736.879 1.76E+07 4292.18 6 1837493Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2000 3245.203 0.3785 7951.629 4.08E+07 7464.96 12 3809001Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2001 4908.336 0.3809 8816.323 4.53E+07 8310.33 12 4276495Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2002 3289.86 0.3806 7559.317 3.84E+07 7823.39 12 3798070Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2003 3550.404 0.3987 8005.728 3.94E+07 8135.61 12 3943203Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2004 3264.158 0.4364 7844.04 3.49E+07 7447.84 12 3604263Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2005 3466.357 0.4301 8711.32 3.94E+07 8255.77 12 3990044Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2006 3308.056 0.4026 7969.347 3.85E+07 8194.09 12 4014497Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2007 2505.467 0.3838 7577.825 3.87E+07 8133.7 12 4120895Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2008 2409.667 0.2588 4310.459 3.31E+07 6825.15 12 3536742Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2009 2428.385 0.2044 4276.037 4.11E+07 8425.04 12 4295088Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2010 2655.85 0.2119 4284.538 3.99E+07 7945.67 12 4134931Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2011 2378.292 0.1981 3594.833 3.54E+07 8258.38 12 3668730Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Jim Bridger 8066BW74 2012 765.862 0.1829 1080.677 1.15E+07 2878.3 6 1197454Tangentially-fired Sodium Based Low NOx Burner Technology w/ Closed-coupled OFA Electrostatic Precipitator WY Laramie River 6204 1 2000 3263.385 0.246 5284.36 4.20E+07 7216.25 12 3916904Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2001 3771.457 0.2474 6040.086 4.82E+07 8089 12 4514866Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2002 3797.611 0.2769 6728.234 4.81E+07 8238.25 12 4626238Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2003 3616.779 0.2512 5613.917 4.41E+07 7621.5 12 4298900Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2004 4177.824 0.2563 6456.91 4.96E+07 8413.25 12 4706215 Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2005 4475.548 0.2662 6922.187 5.13E+07 8545.75 12 4771122 Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2006 3190.114 0.2574 5796.789 4.40E+07 7386.61 12 4050454Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2007 3119.298 0.2558 6363.862 4.85E+07 8644.56 12 4353166Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2008 3732.347 0.2555 6416.352 4.94E+07 8410.45 12 4528551Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator

WY Laramie River 6204 1 2009 2909.791 0.2281 4737.203 4.10E+07 7248.89 12 4006417Dry bottom wall-fired boiler Wet Limestone Overfire Air (Began Jun 30, 2009)<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2010 2614.508 0.1808 4497.292 4.85E+07 8407.8 12 4595143 Dry bottom wall-fired boiler Wet Limestone Overfire Air<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2011 2572.092 0.1843 4447.349 4.74E+07 8317.08 12 4375814Dry bottom wall-fired boiler Wet Limestone Overfire Air<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 1 2012 984.866 0.1771 1737.69 1.80E+07 3461.08 9 1637314Dry bottom wall-fired boiler Wet Limestone Overfire Air<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2000 3752.248 0.2702 6387.469 4.68E+07 8535.75 12 4743454Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator

Page 3 of 5State Facility Name Facility ID (ORISPL) Unit ID Year SO2 (tons) Avg. NOx

Rate (lb/MMBtu) NOx

(tons) Heat Input

(MMBtu) Operating

Time # of

Months Reported Gross

Load (MWh) Unit Type SO2 Control(s) NOx Control(s) PM Control(s) WY Laramie River 6204 2 2001 3282.475 0.2717 5631.559 4.10E+07 7272.75 12 4064703 Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2002 3872.916 0.2729 6686.953 4.86E+07 8430.25 12 4762834Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2003 4128.642 0.2664 6726.763 5.01E+07 8511.75 12 4859909Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2004 3832.936 0.2446 5617.23 4.55E+07 7604.25 12 4326306Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2005 4479.574 0.2654 7019.175 5.27E+07 8724.25 12 5054305 Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2006 3867.415 0.2657 7084.203 5.30E+07 8634.01 12 4956062 Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2007 2778.529 0.2657 6019.124 4.47E+07 7452.05 12 4233567Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2008 3144.242 0.2661 6545.873 4.85E+07 8235.55 12 4690301Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2009 2863.352 0.2493 5698.434 4.51E+07 7908.89 12 4580036Dry bottom wall-fired boiler Wet Limestone Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator

WY Laramie River 6204 2 2010 2272.626 0.2159 4338.413 3.97E+07 6862.31 12 3884223 Dry bottom wall-fired boiler Wet Limestone Overfire Air (Began Jun 01, 2010)<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2011 2941.04 0.1838 4665.605 5.03E+07 8384.74 12 4796272 Dry bottom wall-fired boiler Wet Limestone Overfire Air<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 2 2012 1955.875 0.1879 3479.103 3.66E+07 6432.42 9 3622107Dry bottom wall-fired boiler Wet Limestone Overfire Air<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2000 4401.844 0.2474 6472.775 5.20E+07 8355 12 4655146Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2001 4368.899 0.2463 6323.325 5.10E+07 8429.5 12 4743941Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2002 3463.111 0.272 5544.715 4.05E+07 6969.25 12 3871950Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2003 4505.317 0.2825 7369.091 5.19E+07 8568.25 12 4852156Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2004 4456.006 0.282 7423.544 5.21E+07 8301.5 12 4687003 Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2005 4142.663 0.26 6009.745 4.55E+07 7459.25 12 4120471Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2006 4481.556 0.264 6900.163 5.17E+07 8289.22 12 4704719Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2007 4489.269 0.2692 7227.684 5.28E+07 8301.2 12 4645330Dry bottom wall-fired boiler Dry Lime FGD<br>Wet Lime FGD (Retired Sep 30, 2007) Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2008 3868.716 0.2722 6322.803 4.52E+07 7446.24 12 4030889Dry bottom wall-fired boiler Dry Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2009 3520.861 0.285 6091.418 4.16E+07 6904.59 12 3937993 Dry bottom wall-fired boiler Dry Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2010 4490.972 0.2909 7671.953 5.22E+07 8463.02 12 4886620Dry bottom wall-fired boiler Dry Lime FGD Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator

WY Laramie River 6204 3 2011 3889.142 0.2174 4944.651 4.45E+07 7134.74 12 3943782 Dry bottom wall-fired boiler Dry Lime FGD Overfire Air (Began May 26, 2011)<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Laramie River 6204 3 2012 3027.887 0.1902 3378.296 3.50E+07 5911.54 9 3101101Dry bottom wall-fired boiler Dry Lime FGD Overfire Air<br>Low NOx Burner Technology (Dry Bottom only) Electrostatic Precipitator WY Naughton 4162 1 2000 7269.992 0.5133 3806.291 1.48E+07 8693.31 12 1370609Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2001 7705.789 0.5122 3694.826 1.44E+07 8516.86 12 1335545Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2002 6320.442 0.5216 3365.114 1.26E+07 7728.32 12 1193237Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2003 7153.353 0.5126 3721.047 1.44E+07 8558.14 12 1364268Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2004 6617.852 0.5842 3861.386 1.30E+07 8196.77 12 1241505Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2005 7661.808 0.5722 4188.205 1.45E+07 8423.56 12 1344872Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2006 6838.273 0.537 3462.276 1.28E+07 8472.73 12 1188002Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2007 6688.385 0.5242 3376.167 1.27E+07 7786.18 12 1206370Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2008 7268.195 0.5415 3605.92 1.32E+07 8688.2 12 1345255Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2009 7063.334 0.5582 3568.509 1.26E+07 8644.72 12 1341882Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2010 6797.023 0.5651 3556.986 1.25E+07 8701.49 12 1306464Tangentially-fired Electrostatic Precipitator WY Naughton 4162 1 2011 7348.136 0.5892 3978.862 1.34E+07 8534.55 12 1374645Tangentially-fired Electrostatic Precipitator

Page 4 of 5State Facility Name Facility ID (ORISPL) Unit ID Year SO2 (tons) Avg. NOx

Rate (lb/MMBtu) NOx

(tons) Heat Input

(MMBtu) Operating

Time # of

Months Reported Gross

Load (MWh) Unit Type SO2 Control(s) NOx Control(s) PM Control(s)

WY Naughton 4162 1 2012 1873.415 0.5425 1013.693 3651972.031 2301.02 6 362244.5Tangentially-fired Sodium Based (Began Jun 08, 2012) Low NOx Burner Technology w/ Separated OFA (Began Jun 08, 2012) Electrostatic Precipitator WY Naughton 4162 2 2000 9295.897 0.4786 4537.279 1.87E+07 8515.5 12 1743170Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2001 9543.983 0.5061 4554.524 1.78E+07 8417.38 12 1743080Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2002 7937.657 0.5266 4306.428 1.58E+07 7484.57 12 1534622Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2003 8260.499 0.5335 4432.165 1.62E+07 7746.29 12 1589801Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2004 8832.317 0.5578 4813.165 1.70E+07 8440.74 12 1655979Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2005 9464.314 0.5559 4988.055 1.78E+07 8553.14 12 1736217Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2006 7726.564 0.5388 4101.822 1.49E+07 7299.7 12 1462294Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2007 9135.468 0.5161 4606.584 1.76E+07 8679.11 12 1771890Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2008 9175.235 0.5218 4452.85 1.67E+07 8677.14 12 1685326Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2009 8597.128 0.5302 4254.301 1.55E+07 8378.61 12 1592937Tangentially-fired Electrostatic Precipitator WY Naughton 4162 2 2010 8759.273 0.5385 4481.743 1.63E+07 8567.47 12 1686801Tangentially-fired Electrostatic Precipitator

WY Naughton 4162 2 2011 8422.833 0.5641 4291.144 1.48E+07 7129.58 12 1456818Tangentially-fired Sodium Based (Began Oct 01, 2011) Low NOx Burner Technology w/ Separated OFA (Began Oct 01, 2011) Electrostatic Precipitator WY Naughton 4162 2 2012 520.515 0.2098 906.619 8600165.214 4202.62 6 881762Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2000 4967.413 0.3462 4501.999 2.54E+07 8489.3 12 2652335Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2001 4462.2 0.3608 4594.486 2.50E+07 8317.97 12 2665921Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2002 5051.959 0.3685 5240.761 2.84E+07 8206.09 12 2662529Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2003 4684.857 0.3675 4033.023 2.12E+07 7073.97 12 2208220Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2004 5722.859 0.4069 5602.512 2.72E+07 8356.06 12 2736392Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2005 6103.153 0.4035 5559.962 2.70E+07 7987.72 12 2540897Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2006 6098.907 0.4422 6603.993 2.95E+07 8463.62 12 2649570Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2007 5764.347 0.3911 5814.548 2.93E+07 8105.07 12 2616387Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2008 5665.402 0.421 5925.133 2.77E+07 8013.32 12 2465664Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2009 4665.613 0.4187 5091.548 2.37E+07 6860.11 12 2175175Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2010 4687.389 0.4472 6197.256 2.74E+07 8331.02 12 2721768Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2011 4669.16 0.4333 5628.239 2.55E+07 8230.11 12 2636651Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Naughton 4162 3 2012 2263.519 0.3907 2656.431 1.33E+07 4175.28 6 1327156Tangentially-fired Sodium Based Low NOx Burner Technology w/ Separated OFA Electrostatic Precipitator WY Wyodak 6101BW91 2000 6565.95 0.2906 5054.312 3.44E+07 7904.2 12 3015659Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2001 8214.284 0.2537 4600.661 3.60E+07 8445.84 12 3168309Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2002 8291.322 0.2618 4696.526 3.57E+07 8615.73 12 3194853 Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2003 7810.318 0.271 4662.886 3.40E+07 8546.54 12 3064968Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2004 7861.696 0.2895 4952.138 3.39E+07 8242.7 12 2983745 Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2005 7732.067 0.2974 4946.278 3.29E+07 8279.12 12 2984965 Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2006 6513.924 0.2679 3854.568 2.80E+07 7425.35 12 2633463 Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2007 7835.194 0.2747 4603.806 3.33E+07 8644.65 12 3154001Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2008 8196.012 0.296 5011.822 3.37E+07 8527.98 12 3139007Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2009 7436.856 0.2912 4645.478 3.17E+07 8437.19 12 3036154Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator WY Wyodak 6101BW91 2010 6768.087 0.2733 4221.281 3.05E+07 8151.41 12 2876219Dry bottom wall-fired boiler Dry Lime FGD Electrostatic Precipitator

WY Wyodak 6101BW91 2011 2386.766 0.2062 2409.252 2.26E+07 6382.27 12 2067149Dry bottom wall-fired boiler Dry Lime FGD Low NOx Burner Technology w/ Overfire Air (Began Apr 18, 2011) Baghouse (Began Apr 18, 2011)<br>Electrostatic Precipitator (Retired Mar 05, 2011) WY Wyodak 6101BW91 2012 1744.205 0.1894 2288.377 2.39E+07 6280.21 9 2154194Dry bottom wall-fired boiler Dry Lime FGD Low NOx Burner Technology w/ Overfire Air Baghouse

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