B&W identified the following units similar to the Flint Creek boiler with the technologies installed.

**DRB-4Z/OFA** Boardman (2011) Welsh 2 (2005) Welsh 3 (2001) San Juan 3 (2008) San Juan 4 (2008)

**AireJet** Gentleman 2 (2012) Laramie River 1 (2012) Wyodak (2011) Sikeston (2013)

Data in the tabs for each facility are from EPA's CAMD site (http://ampd.epa.gov/ampd/).

Included are data prior to upgrades for comparison.

Exact installation/startup dates were not provided and were assumed based on change in NOx rates.

Sikeston appears to be too recent to have data after installation.

Flint Creek provided for comparison.State Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

OR Boardman 61061SG 2008 1 0.4465 OR Boardman 61061SG 2008 2 0.4443 OR Boardman 61061SG 2008 3 0.4369 OR Boardman 61061SG 2008 4 0.4589 OR Boardman 61061SG 2008 5 OR Boardman 61061SG 2008 6 0.3863 OR Boardman 61061SG 2008 7 0.4325 OR Boardman 61061SG 2008 8 0.4317 OR Boardman 61061SG 2008 9 0.407 OR Boardman 61061SG 2008 10 0.3832 OR Boardman 61061SG 2008 11 0.4158 OR Boardman 61061SG 2008 12 0.4221 OR Boardman 61061SG 2009 1 0.4245 OR Boardman 61061SG 2009 2 0.4302 OR Boardman 61061SG 2009 3 0.4029 OR Boardman 61061SG 2009 4 0.4093 OR Boardman 61061SG 2009 5 OR Boardman 61061SG 2009 6 0.3292 OR Boardman 61061SG 2009 7 OR Boardman 61061SG 2009 8 0.4051 OR Boardman 61061SG 2009 9 0.4077 OR Boardman 61061SG 2009 10 0.4071 OR Boardman 61061SG 2009 11 0.3956 OR Boardman 61061SG 2009 12 0.4278 OR Boardman 61061SG 2010 1 0.4349 OR Boardman 61061SG 2010 2 0.4351 OR Boardman 61061SG 2010 3 0.4324 OR Boardman 61061SG 2010 4 0.4378 OR Boardman 61061SG 2010 5 0.2478 OR Boardman 61061SG 2010 6 0.3273 OR Boardman 61061SG 2010 7 0.4005 OR Boardman 61061SG 2010 8 0.439 OR Boardman 61061SG 2010 9 0.4524 OR Boardman 61061SG 2010 10 0.4405 OR Boardman 61061SG 2010 11 0.4452 OR Boardman 61061SG 2010 12 0.4236 OR Boardman 61061SG 2011 1 0.3917 OR Boardman 61061SG 2011 2 0.3735 OR Boardman 61061SG 2011 3 0.3444 OR Boardman 61061SG 2011 4 0.3299

OR Boardman 61061SG 2011 5 OR Boardman 61061SG 2011 6 0.1629 OR Boardman 61061SG 2011 7 0.2127 OR Boardman 61061SG 2011 8 0.2156 OR Boardman 61061SG 2011 9 0.2026OR Boardman 61061SG 2011 10 0.2021

OR Boardman 61061SG 2011 11 0.212 OR Boardman 61061SG 2011 12 0.2076 OR Boardman 61061SG 2012 1 0.2212 OR Boardman 61061SG 2012 2 0.2145 OR Boardman 61061SG 2012 3 0.1788 OR Boardman 61061SG 2012 4 OR Boardman 61061SG 2012 5 0.1844 OR Boardman 61061SG 2012 6 0.1125 OR Boardman 61061SG 2012 7 0.1723 OR Boardman 61061SG 2012 8 0.1907 OR Boardman 61061SG 2012 9 0.1945 OR Boardman 61061SG 2012 10 0.2076 OR Boardman 61061SG 2012 11 0.2082 OR Boardman 61061SG 2012 12 0.1951 OR Boardman 61061SG 2013 1 0.2132 OR Boardman 61061SG 2013 2 0.2164 OR Boardman 61061SG 2013 3 0.2074LNB/OFA installed

4Z LNB/OFA operationalState Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

NM San Juan 2451 3 2006 1 0.435 NM San Juan 2451 3 2006 2 0.4159 NM San Juan 2451 3 2006 3 0.4001 NM San Juan 2451 3 2006 4 0.514 NM San Juan 2451 3 2006 5 0.4079 NM San Juan 2451 3 2006 6 0.4089 NM San Juan 2451 3 2006 7 0.4147 NM San Juan 2451 3 2006 8 0.4225 NM San Juan 2451 3 2006 9 0.4376 NM San Juan 2451 3 2006 10 0.4201 NM San Juan 2451 3 2006 11 0.4255 NM San Juan 2451 3 2006 12 0.4223 NM San Juan 2451 3 2007 1 0.4239 NM San Juan 2451 3 2007 2 0.423 NM San Juan 2451 3 2007 3 0.4167 NM San Juan 2451 3 2007 4 0.4182 NM San Juan 2451 3 2007 5 0.4134 NM San Juan 2451 3 2007 6 0.4181 NM San Juan 2451 3 2007 7 0.4222 NM San Juan 2451 3 2007 8 0.4204 NM San Juan 2451 3 2007 9 0.4153 NM San Juan 2451 3 2007 10 0.4163 NM San Juan 2451 3 2007 11 0.4149 NM San Juan 2451 3 2007 12 0.4119 NM San Juan 2451 3 2008 1 0.417

NM San Juan 2451 3 2008 2 NM San Juan 2451 3 2008 3 0.1224 NM San Juan 2451 3 2008 4 0.375 NM San Juan 2451 3 2008 5 0.3161 NM San Juan 2451 3 2008 6 0.2846 NM San Juan 2451 3 2008 7 0.2794 NM San Juan 2451 3 2008 8 0.2777 NM San Juan 2451 3 2008 9 0.27 NM San Juan 2451 3 2008 10 0.2861 NM San Juan 2451 3 2008 11 0.2815 NM San Juan 2451 3 2008 12 0.2804 NM San Juan 2451 3 2009 1 0.2761 NM San Juan 2451 3 2009 2 0.2684 NM San Juan 2451 3 2009 3 0.2758 NM San Juan 2451 3 2009 4 0.2758 NM San Juan 2451 3 2009 5 0.2925 NM San Juan 2451 3 2009 6 0.2553 NM San Juan 2451 3 2009 7 0.2763 NM San Juan 2451 3 2009 8 0.278 NM San Juan 2451 3 2009 9 0.2616NM San Juan 2451 3 2009 10 0.2911

NM San Juan 2451 3 2009 11 0.2697 NM San Juan 2451 3 2009 12 0.2836 NM San Juan 2451 3 2010 1 0.2568 NM San Juan 2451 3 2010 2 0.2603 NM San Juan 2451 3 2010 3 0.2759 NM San Juan 2451 3 2010 4 NM San Juan 2451 3 2010 5 0.2078 NM San Juan 2451 3 2010 6 0.2711 NM San Juan 2451 3 2010 7 0.2649 NM San Juan 2451 3 2010 8 0.2656 NM San Juan 2451 3 2010 9 0.2897 NM San Juan 2451 3 2010 10 0.2523 NM San Juan 2451 3 2010 11 0.1226 NM San Juan 2451 3 2010 12 0.2615 NM San Juan 2451 3 2011 1 0.2695 NM San Juan 2451 3 2011 2 0.2519 NM San Juan 2451 3 2011 3 0.2627 NM San Juan 2451 3 2011 4 0.2911 NM San Juan 2451 3 2011 5 0.2655 NM San Juan 2451 3 2011 6 0.2896 NM San Juan 2451 3 2011 7 0.2428 NM San Juan 2451 3 2011 8 0.2812 NM San Juan 2451 3 2011 9 0.261 NM San Juan 2451 3 2011 10 0.2794 NM San Juan 2451 3 2011 11 0.246 NM San Juan 2451 3 2011 12 0.2642 NM San Juan 2451 3 2012 1 0.2676 NM San Juan 2451 3 2012 2 0.2864 NM San Juan 2451 3 2012 3 0.2592 NM San Juan 2451 3 2012 4 0.2425 NM San Juan 2451 3 2012 5 0.2625 NM San Juan 2451 3 2012 6 0.2769 NM San Juan 2451 3 2012 7 0.2959 NM San Juan 2451 3 2012 8 0.2875 NM San Juan 2451 3 2012 9 0.2708 NM San Juan 2451 3 2012 10 NM San Juan 2451 3 2012 11 0.2102 NM San Juan 2451 3 2012 12 0.2796 NM San Juan 2451 3 2013 1 0.2694 NM San Juan 2451 3 2013 2 0.2773 NM San Juan 2451 3 2013 3 0.26844Z LNB/OFA installed in 2008

4Z LNB/OFA operationalState Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

NM San Juan 2451 42006 1 0.4073 NM San Juan 2451 42006 2 0.4209 NM San Juan 2451 42006 3 0.4126 NM San Juan 2451 42006 4 0.3966 NM San Juan 2451 42006 5 0.4086 NM San Juan 2451 42006 6 0.424 NM San Juan 2451 42006 7 0.4264 NM San Juan 2451 42006 8 0.4255 NM San Juan 2451 42006 9 0.4186 NM San Juan 2451 42006 10 0.4236 NM San Juan 2451 42006 11 0.4279 NM San Juan 2451 42006 12 0.4239 NM San Juan 2451 42007 1 0.419 NM San Juan 2451 42007 2 0.4225 NM San Juan 2451 42007 3 0.4265 NM San Juan 2451 42007 4 0.4203 NM San Juan 2451 42007 5 0.4198 NM San Juan 2451 42007 6 0.414 NM San Juan 2451 42007 7 0.421 NM San Juan 2451 42007 8 0.4228 NM San Juan 2451 42007 9 0.4215 NM San Juan 2451 42007 10 0.568 NM San Juan 2451 42007 11 0.3266 NM San Juan 2451 42007 12 0.3471 NM San Juan 2451 42008 1 0.3692 NM San Juan 2451 42008 2 0.4839 NM San Juan 2451 42008 3 0.7955

NM San Juan 2451 42008 4 0.2936 NM San Juan 2451 42008 5 0.3171 NM San Juan 2451 42008 6 0.3277 NM San Juan 2451 42008 7 0.3188 NM San Juan 2451 42008 8 0.3249 NM San Juan 2451 42008 9 0.3185 NM San Juan 2451 42008 10 0.3283 NM San Juan 2451 42008 11 0.3213 NM San Juan 2451 42008 12 0.3393 NM San Juan 2451 42009 1 0.2756 NM San Juan 2451 42009 2 0.2836 NM San Juan 2451 42009 3 0.2884 NM San Juan 2451 42009 4 0.2684 NM San Juan 2451 42009 5 0.2868 NM San Juan 2451 42009 6 0.2759 NM San Juan 2451 42009 7 0.2927 NM San Juan 2451 42009 8 0.2801 NM San Juan 2451 42009 9 0.2895NM San Juan 2451 42009 10 0.2756

NM San Juan 2451 42009 11 0.2726 NM San Juan 2451 42009 12 0.2775 NM San Juan 2451 42010 1 0.2825 NM San Juan 2451 42010 2 NM San Juan 2451 42010 3 0.2589 NM San Juan 2451 42010 4 0.2705 NM San Juan 2451 42010 5 0.2789 NM San Juan 2451 42010 6 0.2842 NM San Juan 2451 42010 7 0.264 NM San Juan 2451 42010 8 0.2813 NM San Juan 2451 42010 9 0.2935 NM San Juan 2451 42010 10 0.2867 NM San Juan 2451 42010 11 0.2882 NM San Juan 2451 42010 12 0.2822 NM San Juan 2451 42011 1 0.276 NM San Juan 2451 42011 2 0.2728 NM San Juan 2451 42011 3 0.2863 NM San Juan 2451 42011 4 0.2831 NM San Juan 2451 42011 5 0.2606 NM San Juan 2451 42011 6 0.2686 NM San Juan 2451 42011 7 0.2707 NM San Juan 2451 42011 8 0.2818 NM San Juan 2451 42011 9 0.2827 NM San Juan 2451 42011 10 0.2766 NM San Juan 2451 42011 11 0.2533 NM San Juan 2451 42011 12 0.2717 NM San Juan 2451 42012 1 0.2737 NM San Juan 2451 42012 2 0.2472 NM San Juan 2451 42012 3 0.2648 NM San Juan 2451 42012 4 0.2381 NM San Juan 2451 42012 5 0.2554 NM San Juan 2451 42012 6 0.269 NM San Juan 2451 42012 7 0.2722 NM San Juan 2451 42012 8 0.2816 NM San Juan 2451 42012 9 0.274 NM San Juan 2451 42012 10 0.2603 NM San Juan 2451 42012 11 0.2857 NM San Juan 2451 42012 12 0.2777 NM San Juan 2451 42013 1 0.2893 NM San Juan 2451 42013 2 0.2727 NM San Juan 2451 42013 3 0.26224Z LNB/OFA installed in 2008

4Z LNB/OFA operationalState Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

TX Welsh Power Plant 6139 22000 1 0.3386 TX Welsh Power Plant 6139 22000 2 0.3354 TX Welsh Power Plant 6139 22000 3 0.3705 TX Welsh Power Plant 6139 22000 4 0.326 TX Welsh Power Plant 6139 22000 5 0.3019 TX Welsh Power Plant 6139 22000 6 0.3113 TX Welsh Power Plant 6139 22000 7 0.3276 TX Welsh Power Plant 6139 22000 8 0.3472 TX Welsh Power Plant 6139 22000 9 0.3056 TX Welsh Power Plant 6139 22000 10 0.3413 TX Welsh Power Plant 6139 22000 11 0.3354 TX Welsh Power Plant 6139 22000 12 0.2939 TX Welsh Power Plant 6139 22001 1 0.3497 TX Welsh Power Plant 6139 22001 2 0.3272 TX Welsh Power Plant 6139 22001 3 0.3707 TX Welsh Power Plant 6139 22001 4 0.2549 TX Welsh Power Plant 6139 22001 5 0.3932 TX Welsh Power Plant 6139 22001 6 0.3847 TX Welsh Power Plant 6139 22001 7 0.3613 TX Welsh Power Plant 6139 22001 8 0.3506 TX Welsh Power Plant 6139 22001 9 0.3341 TX Welsh Power Plant 6139 22001 10 0.3821 TX Welsh Power Plant 6139 22001 11 0.3515 TX Welsh Power Plant 6139 22001 12 0.3235 TX Welsh Power Plant 6139 22002 1 0.3797 TX Welsh Power Plant 6139 22002 2 0.3367 TX Welsh Power Plant 6139 22002 3 0.3437 TX Welsh Power Plant 6139 22002 4 0.3423 TX Welsh Power Plant 6139 22002 5 0.3367 TX Welsh Power Plant 6139 22002 6 0.336 TX Welsh Power Plant 6139 22002 7 0.3334 TX Welsh Power Plant 6139 22002 8 0.339 TX Welsh Power Plant 6139 22002 9 0.3041 TX Welsh Power Plant 6139 22002 10 0.3264 TX Welsh Power Plant 6139 22002 11 0.3504 TX Welsh Power Plant 6139 22002 12 0.3898 TX Welsh Power Plant 6139 22003 1 0.4782 TX Welsh Power Plant 6139 22003 2 0.4741 TX Welsh Power Plant 6139 22003 3 0.4675 TX Welsh Power Plant 6139 22003 4 0.2969 TX Welsh Power Plant 6139 22003 5 0.368 TX Welsh Power Plant 6139 22003 6 0.3567 TX Welsh Power Plant 6139 22003 7 0.3472 TX Welsh Power Plant 6139 22003 8 0.3239 TX Welsh Power Plant 6139 22003 9 0.3618 TX Welsh Power Plant 6139 22003 10 0.3874TX Welsh Power Plant 6139 22003 11 0.402

TX Welsh Power Plant 6139 22003 12 0.3419 TX Welsh Power Plant 6139 22004 1 0.4002 TX Welsh Power Plant 6139 22004 2 0.3916 TX Welsh Power Plant 6139 22004 3 0.3188 TX Welsh Power Plant 6139 22004 4 0.3003 TX Welsh Power Plant 6139 22004 5 0.291 TX Welsh Power Plant 6139 22004 6 0.302 TX Welsh Power Plant 6139 22004 7 0.2754 TX Welsh Power Plant 6139 22004 8 0.3034 TX Welsh Power Plant 6139 22004 9 0.3421 TX Welsh Power Plant 6139 22004 10 0.3321 TX Welsh Power Plant 6139 22004 11 0.3688 TX Welsh Power Plant 6139 22004 12 0.3637 TX Welsh Power Plant 6139 22005 1 0.3577 TX Welsh Power Plant 6139 22005 2 0.3792 TX Welsh Power Plant 6139 22005 3 TX Welsh Power Plant 6139 22005 4

TX Welsh Power Plant 6139 22005 5 0.2576 TX Welsh Power Plant 6139 22005 6 0.1781 TX Welsh Power Plant 6139 22005 7 0.1733 TX Welsh Power Plant 6139 22005 8 0.1755 TX Welsh Power Plant 6139 22005 9 0.1642 TX Welsh Power Plant 6139 22005 10 0.1724 TX Welsh Power Plant 6139 22005 11 0.1797 TX Welsh Power Plant 6139 22005 12 0.1572 TX Welsh Power Plant 6139 22006 1 0.1621 TX Welsh Power Plant 6139 22006 2 0.181 TX Welsh Power Plant 6139 22006 3 0.191 TX Welsh Power Plant 6139 22006 4 0.1672 TX Welsh Power Plant 6139 22006 5 0.1678 TX Welsh Power Plant 6139 22006 6 0.1632 TX Welsh Power Plant 6139 22006 7 0.1648 TX Welsh Power Plant 6139 22006 8 0.1721 TX Welsh Power Plant 6139 22006 9 0.1682 TX Welsh Power Plant 6139 22006 10 0.1597 TX Welsh Power Plant 6139 22006 11 0.1705 TX Welsh Power Plant 6139 22006 12 0.1666 TX Welsh Power Plant 6139 22007 1 0.1637 TX Welsh Power Plant 6139 22007 2 0.1665 TX Welsh Power Plant 6139 22007 3 0.1672 TX Welsh Power Plant 6139 22007 4 0.1651 TX Welsh Power Plant 6139 22007 5 0.157 TX Welsh Power Plant 6139 22007 6 0.1636 TX Welsh Power Plant 6139 22007 7 0.1607 TX Welsh Power Plant 6139 22007 8 0.1615TX Welsh Power Plant 6139 22007 9 0.1625

TX Welsh Power Plant 6139 22007 10 0.1641 TX Welsh Power Plant 6139 22007 11 0.1643 TX Welsh Power Plant 6139 22007 12 0.166 TX Welsh Power Plant 6139 22008 1 0.1689 TX Welsh Power Plant 6139 22008 2 0.2606 TX Welsh Power Plant 6139 22008 3 0.1688 TX Welsh Power Plant 6139 22008 4 0.1653 TX Welsh Power Plant 6139 22008 5 0.1633 TX Welsh Power Plant 6139 22008 6 0.1668 TX Welsh Power Plant 6139 22008 7 0.1637 TX Welsh Power Plant 6139 22008 8 0.1663 TX Welsh Power Plant 6139 22008 9 0.17 TX Welsh Power Plant 6139 22008 10 0.1639 TX Welsh Power Plant 6139 22008 11 0.17 TX Welsh Power Plant 6139 22008 12 0.1703 TX Welsh Power Plant 6139 22009 1 0.171 TX Welsh Power Plant 6139 22009 2 0.1722 TX Welsh Power Plant 6139 22009 3 0.1716 TX Welsh Power Plant 6139 22009 4 0.157 TX Welsh Power Plant 6139 22009 5 0.1693 TX Welsh Power Plant 6139 22009 6 0.1737 TX Welsh Power Plant 6139 22009 7 0.1764 TX Welsh Power Plant 6139 22009 8 0.1763 TX Welsh Power Plant 6139 22009 9 0.1711 TX Welsh Power Plant 6139 22009 10 0.1766 TX Welsh Power Plant 6139 22009 11 0.1759 TX Welsh Power Plant 6139 22009 12 0.1756 TX Welsh Power Plant 6139 22010 1 0.176 TX Welsh Power Plant 6139 22010 2 0.1726 TX Welsh Power Plant 6139 22010 3 0.1651 TX Welsh Power Plant 6139 22010 4 0.1698 TX Welsh Power Plant 6139 22010 5 0.1674 TX Welsh Power Plant 6139 22010 6 0.1707 TX Welsh Power Plant 6139 22010 7 0.1741 TX Welsh Power Plant 6139 22010 8 0.1776 TX Welsh Power Plant 6139 22010 9 0.1751 TX Welsh Power Plant 6139 22010 10 0.1572 TX Welsh Power Plant 6139 22010 11 0.1664 TX Welsh Power Plant 6139 22010 12 0.1693 TX Welsh Power Plant 6139 22011 1 0.1767 TX Welsh Power Plant 6139 22011 2 0.1769 TX Welsh Power Plant 6139 22011 3 0.1777 TX Welsh Power Plant 6139 22011 4 0.1718 TX Welsh Power Plant 6139 22011 5 0.177 TX Welsh Power Plant 6139 22011 6 0.1742 TX Welsh Power Plant 6139 22011 7 0.1793TX Welsh Power Plant 6139 22011 8 0.1819

TX Welsh Power Plant 6139 22011 9 0.179 TX Welsh Power Plant 6139 22011 10 0.1537 TX Welsh Power Plant 6139 22011 11 0.1825 TX Welsh Power Plant 6139 22011 12 0.1648 TX Welsh Power Plant 6139 22012 1 0.1731 TX Welsh Power Plant 6139 22012 2 0.1637 TX Welsh Power Plant 6139 22012 3 0.1676 TX Welsh Power Plant 6139 22012 4 0.1673 TX Welsh Power Plant 6139 22012 5 0.1616 TX Welsh Power Plant 6139 22012 6 0.1674 TX Welsh Power Plant 6139 22012 7 0.1674 TX Welsh Power Plant 6139 22012 8 0.1761 TX Welsh Power Plant 6139 22012 9 0.1624 TX Welsh Power Plant 6139 22012 10 0.1551 TX Welsh Power Plant 6139 22012 11 0.1605 TX Welsh Power Plant 6139 22012 12 0.1692burner installation outage

Startup and tuning of new burners 4Z LNB/OFA operationalState Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

TX Welsh Power Plant 6139 3 2000 1 0.4122 TX Welsh Power Plant 6139 3 2000 2 0.3882 TX Welsh Power Plant 6139 3 2000 3 0.4034 TX Welsh Power Plant 6139 3 2000 4 0.3995 TX Welsh Power Plant 6139 3 2000 5 0.3384 TX Welsh Power Plant 6139 3 2000 6 0.3387 TX Welsh Power Plant 6139 3 2000 7 0.3689 TX Welsh Power Plant 6139 3 2000 8 0.3875 TX Welsh Power Plant 6139 3 2000 9 0.3975 TX Welsh Power Plant 6139 3 2000 10

TX Welsh Power Plant 6139 3 2000 11 0.2597 TX Welsh Power Plant 6139 3 2000 12 0.2179 TX Welsh Power Plant 6139 3 2001 1 0.2149 TX Welsh Power Plant 6139 3 2001 2 0.225 TX Welsh Power Plant 6139 3 2001 3 0.2321 TX Welsh Power Plant 6139 3 2001 4 0.204 TX Welsh Power Plant 6139 3 2001 5 0.1834 TX Welsh Power Plant 6139 3 2001 6 0.1853 TX Welsh Power Plant 6139 3 2001 7 0.1803 TX Welsh Power Plant 6139 3 2001 8 0.1771 TX Welsh Power Plant 6139 3 2001 9 0.1671 TX Welsh Power Plant 6139 3 2001 10 0.1719 TX Welsh Power Plant 6139 3 2001 11 0.1833 TX Welsh Power Plant 6139 3 2001 12 0.1884 TX Welsh Power Plant 6139 3 2002 1 0.1866 TX Welsh Power Plant 6139 3 2002 2 0.1747 TX Welsh Power Plant 6139 3 2002 3 0.181 TX Welsh Power Plant 6139 3 2002 4 0.1653 TX Welsh Power Plant 6139 3 2002 5 0.1811 TX Welsh Power Plant 6139 3 2002 6 0.1792 TX Welsh Power Plant 6139 3 2002 7 0.1694 TX Welsh Power Plant 6139 3 2002 8 0.1667 TX Welsh Power Plant 6139 3 2002 9 0.1725 TX Welsh Power Plant 6139 3 2002 10 0.1664 TX Welsh Power Plant 6139 3 2002 11 0.1522 TX Welsh Power Plant 6139 3 2002 12 0.1817 TX Welsh Power Plant 6139 3 2003 1 0.184 TX Welsh Power Plant 6139 3 2003 2 0.185 TX Welsh Power Plant 6139 3 2003 3 0.1935 TX Welsh Power Plant 6139 3 2003 4 0.1877 TX Welsh Power Plant 6139 3 2003 5 0.1787 TX Welsh Power Plant 6139 3 2003 6 0.1827 TX Welsh Power Plant 6139 3 2003 7 0.1771 TX Welsh Power Plant 6139 3 2003 8 0.1784 TX Welsh Power Plant 6139 3 2003 9 0.1627TX Welsh Power Plant 6139 3 2003 10 0.1935

TX Welsh Power Plant 6139 3 2003 11 0.1667 TX Welsh Power Plant 6139 3 2003 12 0.1688 TX Welsh Power Plant 6139 3 2004 1 0.2014 TX Welsh Power Plant 6139 3 2004 2 0.217 TX Welsh Power Plant 6139 3 2004 3 0.2122 TX Welsh Power Plant 6139 3 2004 4 0.2226 TX Welsh Power Plant 6139 3 2004 5 0.209 TX Welsh Power Plant 6139 3 2004 6 0.1954 TX Welsh Power Plant 6139 3 2004 7 0.1935 TX Welsh Power Plant 6139 3 2004 8 0.1951 TX Welsh Power Plant 6139 3 2004 9 0.2003 TX Welsh Power Plant 6139 3 2004 10 0.2074 TX Welsh Power Plant 6139 3 2004 11 0.2007 TX Welsh Power Plant 6139 3 2004 12 0.1995 TX Welsh Power Plant 6139 3 2005 1 0.1849 TX Welsh Power Plant 6139 3 2005 2 0.1957 TX Welsh Power Plant 6139 3 2005 3 0.1954 TX Welsh Power Plant 6139 3 2005 4 0.2021 TX Welsh Power Plant 6139 3 2005 5 0.1794 TX Welsh Power Plant 6139 3 2005 6 0.1887 TX Welsh Power Plant 6139 3 2005 7 0.2128 TX Welsh Power Plant 6139 3 2005 8 0.2039 TX Welsh Power Plant 6139 3 2005 9 0.2023 TX Welsh Power Plant 6139 3 2005 10 0.2016 TX Welsh Power Plant 6139 3 2005 11 0.1693 TX Welsh Power Plant 6139 3 2005 12 0.1825 TX Welsh Power Plant 6139 3 2006 1 0.1902 TX Welsh Power Plant 6139 3 2006 2 0.2177 TX Welsh Power Plant 6139 3 2006 3 0.2087 TX Welsh Power Plant 6139 3 2006 4 TX Welsh Power Plant 6139 3 2006 5 0.1948 TX Welsh Power Plant 6139 3 2006 6 0.1922 TX Welsh Power Plant 6139 3 2006 7 0.197 TX Welsh Power Plant 6139 3 2006 8 0.1963 TX Welsh Power Plant 6139 3 2006 9 0.2311 TX Welsh Power Plant 6139 3 2006 10 0.192 TX Welsh Power Plant 6139 3 2006 11 0.1912 TX Welsh Power Plant 6139 3 2006 12 0.1945 TX Welsh Power Plant 6139 3 2007 1 0.1879 TX Welsh Power Plant 6139 3 2007 2 0.1869 TX Welsh Power Plant 6139 3 2007 3 0.1596 TX Welsh Power Plant 6139 3 2007 4 0.1873 TX Welsh Power Plant 6139 3 2007 5 0.1805 TX Welsh Power Plant 6139 3 2007 6 0.1832 TX Welsh Power Plant 6139 3 2007 7 0.1855 TX Welsh Power Plant 6139 3 2007 8 0.1906TX Welsh Power Plant 6139 3 2007 9 0.1869

TX Welsh Power Plant 6139 3 2007 10 0.19 TX Welsh Power Plant 6139 3 2007 11 0.1985 TX Welsh Power Plant 6139 3 2007 12 0.1828 TX Welsh Power Plant 6139 3 2008 1 0.1907 TX Welsh Power Plant 6139 3 2008 2 0.1804 TX Welsh Power Plant 6139 3 2008 3 0.1793 TX Welsh Power Plant 6139 3 2008 4 0.199 TX Welsh Power Plant 6139 3 2008 5 0.1983 TX Welsh Power Plant 6139 3 2008 6 0.1896 TX Welsh Power Plant 6139 3 2008 7 0.2065 TX Welsh Power Plant 6139 3 2008 8 0.2144 TX Welsh Power Plant 6139 3 2008 9 0.1994 TX Welsh Power Plant 6139 3 2008 10 0.1994 TX Welsh Power Plant 6139 3 2008 11 0.202 TX Welsh Power Plant 6139 3 2008 12 0.1916 TX Welsh Power Plant 6139 3 2009 1 0.1921 TX Welsh Power Plant 6139 3 2009 2 0.1847 TX Welsh Power Plant 6139 3 2009 3 0.1991 TX Welsh Power Plant 6139 3 2009 4 0.1812 TX Welsh Power Plant 6139 3 2009 5 0.1802 TX Welsh Power Plant 6139 3 2009 6 0.1741 TX Welsh Power Plant 6139 3 2009 7 0.1709 TX Welsh Power Plant 6139 3 2009 8 0.1718 TX Welsh Power Plant 6139 3 2009 9 0.1691 TX Welsh Power Plant 6139 3 2009 10 0.1832 TX Welsh Power Plant 6139 3 2009 11 0.197 TX Welsh Power Plant 6139 3 2009 12 0.2038 TX Welsh Power Plant 6139 3 2010 1 0.2085 TX Welsh Power Plant 6139 3 2010 2 0.1943 TX Welsh Power Plant 6139 3 2010 3 0.2066 TX Welsh Power Plant 6139 3 2010 4 0.1472 TX Welsh Power Plant 6139 3 2010 5 0.1815 TX Welsh Power Plant 6139 3 2010 6 0.1837 TX Welsh Power Plant 6139 3 2010 7 0.1854 TX Welsh Power Plant 6139 3 2010 8 0.2003 TX Welsh Power Plant 6139 3 2010 9 0.1864 TX Welsh Power Plant 6139 3 2010 10 0.1991 TX Welsh Power Plant 6139 3 2010 11 0.1874 TX Welsh Power Plant 6139 3 2010 12 0.1877 TX Welsh Power Plant 6139 3 2011 1 0.1943 TX Welsh Power Plant 6139 3 2011 2 0.2397 TX Welsh Power Plant 6139 3 2011 3 0.237 TX Welsh Power Plant 6139 3 2011 4 0.2034 TX Welsh Power Plant 6139 3 2011 5 0.2012 TX Welsh Power Plant 6139 3 2011 6 0.2074 TX Welsh Power Plant 6139 3 2011 7 0.2102TX Welsh Power Plant 6139 3 2011 8 0.2052

TX Welsh Power Plant 6139 3 2011 9 0.194 TX Welsh Power Plant 6139 3 2011 10 0.1965 TX Welsh Power Plant 6139 3 2011 11 0.2076 TX Welsh Power Plant 6139 3 2011 12 0.2051 TX Welsh Power Plant 6139 3 2012 1 0.1985 TX Welsh Power Plant 6139 3 2012 2 0.1945 TX Welsh Power Plant 6139 3 2012 3 0.1912 TX Welsh Power Plant 6139 3 2012 4 0.1811 TX Welsh Power Plant 6139 3 2012 5 0.1707 TX Welsh Power Plant 6139 3 2012 6 0.1971 TX Welsh Power Plant 6139 3 2012 7 0.1935 TX Welsh Power Plant 6139 3 2012 8 0.1983 TX Welsh Power Plant 6139 3 2012 9 0.1878 TX Welsh Power Plant 6139 3 2012 10 0.1954 TX Welsh Power Plant 6139 3 2012 11 0.1938 TX Welsh Power Plant 6139 3 2012 12 0.1836outage

4Z LNB/OFA operationalState Facility Name Facility ID (ORISPL) Unit ID YearMonth

NE Gerald Gentleman Station 6077 22006 1 NE Gerald Gentleman Station 6077 22006 2 NE Gerald Gentleman Station 6077 22006 3 NE Gerald Gentleman Station 6077 22006 4 NE Gerald Gentleman Station 6077 22006 5 NE Gerald Gentleman Station 6077 22006 6 NE Gerald Gentleman Station 6077 22006 7 NE Gerald Gentleman Station 6077 22006 8 NE Gerald Gentleman Station 6077 22006 9 NE Gerald Gentleman Station 6077 22006 10 NE Gerald Gentleman Station 6077 22006 11 NE Gerald Gentleman Station 6077 22006 12 NE Gerald Gentleman Station 6077 22007 1 NE Gerald Gentleman Station 6077 22007 2 NE Gerald Gentleman Station 6077 22007 3 NE Gerald Gentleman Station 6077 22007 4 NE Gerald Gentleman Station 6077 22007 5 NE Gerald Gentleman Station 6077 22007 6 NE Gerald Gentleman Station 6077 22007 7 NE Gerald Gentleman Station 6077 22007 8 NE Gerald Gentleman Station 6077 22007 9 NE Gerald Gentleman Station 6077 22007 10 NE Gerald Gentleman Station 6077 22007 11 NE Gerald Gentleman Station 6077 22007 12 NE Gerald Gentleman Station 6077 22008 1 NE Gerald Gentleman Station 6077 22008 2 NE Gerald Gentleman Station 6077 22008 3 NE Gerald Gentleman Station 6077 22008 4 NE Gerald Gentleman Station 6077 22008 5 NE Gerald Gentleman Station 6077 22008 6 NE Gerald Gentleman Station 6077 22008 7 NE Gerald Gentleman Station 6077 22008 8 NE Gerald Gentleman Station 6077 22008 9 NE Gerald Gentleman Station 6077 22008 10 NE Gerald Gentleman Station 6077 22008 11 NE Gerald Gentleman Station 6077 22008 12 NE Gerald Gentleman Station 6077 22009 1 NE Gerald Gentleman Station 6077 22009 2 NE Gerald Gentleman Station 6077 22009 3 NE Gerald Gentleman Station 6077 22009 4 NE Gerald Gentleman Station 6077 22009 5 NE Gerald Gentleman Station 6077 22009 6 NE Gerald Gentleman Station 6077 22009 7 NE Gerald Gentleman Station 6077 22009 8 NE Gerald Gentleman Station 6077 22009 9 NE Gerald Gentleman Station 6077 22009 10NE Gerald Gentleman Station 6077 22009 11

NE Gerald Gentleman Station 6077 22009 12 NE Gerald Gentleman Station 6077 22010 1 NE Gerald Gentleman Station 6077 22010 2 NE Gerald Gentleman Station 6077 22010 3 NE Gerald Gentleman Station 6077 22010 4 NE Gerald Gentleman Station 6077 22010 5 NE Gerald Gentleman Station 6077 22010 6 NE Gerald Gentleman Station 6077 22010 7 NE Gerald Gentleman Station 6077 22010 8 NE Gerald Gentleman Station 6077 22010 9 NE Gerald Gentleman Station 6077 22010 10 NE Gerald Gentleman Station 6077 22010 11 NE Gerald Gentleman Station 6077 22010 12 NE Gerald Gentleman Station 6077 22011 1 NE Gerald Gentleman Station 6077 22011 2 NE Gerald Gentleman Station 6077 22011 3 NE Gerald Gentleman Station 6077 22011 4 NE Gerald Gentleman Station 6077 22011 5 NE Gerald Gentleman Station 6077 22011 6 NE Gerald Gentleman Station 6077 22011 7 NE Gerald Gentleman Station 6077 22011 8 NE Gerald Gentleman Station 6077 22011 9 NE Gerald Gentleman Station 6077 22011 10 NE Gerald Gentleman Station 6077 22011 11 NE Gerald Gentleman Station 6077 22011 12 NE Gerald Gentleman Station 6077 22012 1 NE Gerald Gentleman Station 6077 22012 2 NE Gerald Gentleman Station 6077 22012 3 NE Gerald Gentleman Station 6077 22012 4

NE Gerald Gentleman Station 6077 22012 5 NE Gerald Gentleman Station 6077 22012 6 NE Gerald Gentleman Station 6077 22012 7 NE Gerald Gentleman Station 6077 22012 8 NE Gerald Gentleman Station 6077 22012 9 NE Gerald Gentleman Station 6077 22012 10 NE Gerald Gentleman Station 6077 22012 11 NE Gerald Gentleman Station 6077 22012 12 NE Gerald Gentleman Station 6077 22013 1 NE Gerald Gentleman Station 6077 22013 2 NE Gerald Gentleman Station 6077 22013 3Avg. NOx Rate (lb/MMBtu) 0.3653 0.3964 0.3629 0.3287 0.344 0.3421 0.36 0.3402 0.3413 0.3305 0.3292 0.3382 0.3013 0.2648 0.3018 0.3354

0.2708 0.2863 0.3154 0.2941 0.3178 0.3302 0.3322 0.3412 0.3779 0.342 0.3317 0.3175 0.3103 0.3303 0.3459 0.3288 0.3402 0.3505 0.344 0.359 0.3606 0.3532 0.3665 0.3681 0.2331 0.3124 0.3424 0.3389 0.37360.3691 0.3375 0.3541 0.3584 0.3537 0.3185 0.0278 0.2576 0.2914 0.305 0.2965 0.314 0.3211 0.3597 0.3457 0.3184 0.3215 0.3296 0.3146 0.2992 0.3061 0.3198 0.3377 0.3201 0.3394 0.3631 0.3474 0.3507 0.3212 0.2965

Startup 2012 0.0104AireJet LNB operational 0.1195 0.1361 0.1489 0.1491 0.1632 0.1577 0.1603 0.171 0.181State Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

WY Laramie River 6204 12006 1 0.2777 WY Laramie River 6204 12006 2 0.2749 WY Laramie River 6204 12006 3 0.2697 WY Laramie River 6204 12006 4 0.2746 WY Laramie River 6204 12006 5 WY Laramie River 6204 12006 6 0.1997 WY Laramie River 6204 12006 7 0.2498 WY Laramie River 6204 12006 8 0.2613 WY Laramie River 6204 12006 9 0.2506 WY Laramie River 6204 12006 10 0.2566 WY Laramie River 6204 12006 11 0.2605 WY Laramie River 6204 12006 12 0.2561 WY Laramie River 6204 12007 1 0.227 WY Laramie River 6204 12007 2 0.2173 WY Laramie River 6204 12007 3 0.2392 WY Laramie River 6204 12007 4 0.2555 WY Laramie River 6204 12007 5 0.2717 WY Laramie River 6204 12007 6 0.2836 WY Laramie River 6204 12007 7 0.2847 WY Laramie River 6204 12007 8 0.2543 WY Laramie River 6204 12007 9 0.2539 WY Laramie River 6204 12007 10 0.2506 WY Laramie River 6204 12007 11 0.2588 WY Laramie River 6204 12007 12 0.2725 WY Laramie River 6204 12008 1 0.2608 WY Laramie River 6204 12008 2 0.2697 WY Laramie River 6204 12008 3 0.234 WY Laramie River 6204 12008 4 0.2386 WY Laramie River 6204 12008 5 0.2395 WY Laramie River 6204 12008 6 0.258 WY Laramie River 6204 12008 7 0.2559 WY Laramie River 6204 12008 8 0.2338 WY Laramie River 6204 12008 9 0.248 WY Laramie River 6204 12008 10 0.2444 WY Laramie River 6204 12008 11 0.2834 WY Laramie River 6204 12008 12 0.2949 WY Laramie River 6204 12009 1 0.2982 WY Laramie River 6204 12009 2 0.299 WY Laramie River 6204 12009 3 0.3022 WY Laramie River 6204 12009 4 0.248 WY Laramie River 6204 12009 5 0.0039 WY Laramie River 6204 12009 6 0.185 WY Laramie River 6204 12009 7 0.197 WY Laramie River 6204 12009 8 0.2062 WY Laramie River 6204 12009 9 0.2068 WY Laramie River 6204 12009 10 0.199WY Laramie River 6204 12009 11 0.1935

WY Laramie River 6204 12009 12 0.1884 WY Laramie River 6204 12010 1 0.1842 WY Laramie River 6204 12010 2 0.2057 WY Laramie River 6204 12010 3 0.182 WY Laramie River 6204 12010 4 0.1903 WY Laramie River 6204 12010 5 0.1882 WY Laramie River 6204 12010 6 0.1814 WY Laramie River 6204 12010 7 0.1838 WY Laramie River 6204 12010 8 0.1707 WY Laramie River 6204 12010 9 0.1293 WY Laramie River 6204 12010 10 0.1663 WY Laramie River 6204 12010 11 0.1753 WY Laramie River 6204 12010 12 0.2007 WY Laramie River 6204 12011 1 0.192 WY Laramie River 6204 12011 2 0.1865 WY Laramie River 6204 12011 3 0.2 WY Laramie River 6204 12011 4 0.1911 WY Laramie River 6204 12011 5 0.1764 WY Laramie River 6204 12011 6 0.1765 WY Laramie River 6204 12011 7 0.1889 WY Laramie River 6204 12011 8 0.1777 WY Laramie River 6204 12011 9 0.1761 WY Laramie River 6204 12011 10 0.1732 WY Laramie River 6204 12011 11 0.1732 WY Laramie River 6204 12011 12 0.1967 WY Laramie River 6204 12012 1 0.194 WY Laramie River 6204 12012 2 0.1947 WY Laramie River 6204 12012 3 0.2003 WY Laramie River 6204 12012 4

WY Laramie River 6204 12012 5 0.0083 WY Laramie River 6204 12012 6 0.1027 WY Laramie River 6204 12012 7 0.184 WY Laramie River 6204 12012 8 0.1816 WY Laramie River 6204 12012 9 0.158 WY Laramie River 6204 12012 10 0.1523 WY Laramie River 6204 12012 11 0.173 WY Laramie River 6204 12012 12 0.1635 WY Laramie River 6204 12013 1 0.1632 WY Laramie River 6204 12013 2 0.1736 WY Laramie River 6204 12013 3 0.1679Cause for change in rate?Startup 2012

AireJet LNB operationalState Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

WY Wyodak 6101BW91 2006 1 0.307 WY Wyodak 6101BW91 2006 2 0.2944 WY Wyodak 6101BW91 2006 3 0.278 WY Wyodak 6101BW91 2006 4 0.2708 WY Wyodak 6101BW91 2006 5 0.2696 WY Wyodak 6101BW91 2006 6 0.0904 WY Wyodak 6101BW91 2006 7 0.249 WY Wyodak 6101BW91 2006 8 0.2243 WY Wyodak 6101BW91 2006 9 0.2444 WY Wyodak 6101BW91 2006 10 0.2877 WY Wyodak 6101BW91 2006 11 0.2846 WY Wyodak 6101BW91 2006 12 0.2837 WY Wyodak 6101BW91 2007 1 0.2523 WY Wyodak 6101BW91 2007 2 0.2661 WY Wyodak 6101BW91 2007 3 0.2623 WY Wyodak 6101BW91 2007 4 0.2798 WY Wyodak 6101BW91 2007 5 0.2848 WY Wyodak 6101BW91 2007 6 0.2896 WY Wyodak 6101BW91 2007 7 0.2896 WY Wyodak 6101BW91 2007 8 0.2639 WY Wyodak 6101BW91 2007 9 0.2827 WY Wyodak 6101BW91 2007 10 0.2693 WY Wyodak 6101BW91 2007 11 0.2652 WY Wyodak 6101BW91 2007 12 0.2896 WY Wyodak 6101BW91 2008 1 0.268 WY Wyodak 6101BW91 2008 2 0.2872 WY Wyodak 6101BW91 2008 3 0.2952 WY Wyodak 6101BW91 2008 4 0.2739 WY Wyodak 6101BW91 2008 5 0.2698 WY Wyodak 6101BW91 2008 6 0.3054 WY Wyodak 6101BW91 2008 7 0.3161 WY Wyodak 6101BW91 2008 8 0.3069 WY Wyodak 6101BW91 2008 9 0.29 WY Wyodak 6101BW91 2008 10 0.2986 WY Wyodak 6101BW91 2008 11 0.3118 WY Wyodak 6101BW91 2008 12 0.3254 WY Wyodak 6101BW91 2009 1 0.3286 WY Wyodak 6101BW91 2009 2 0.2983 WY Wyodak 6101BW91 2009 3 0.3091 WY Wyodak 6101BW91 2009 4 0.2919 WY Wyodak 6101BW91 2009 5 0.3161 WY Wyodak 6101BW91 2009 6 0.3421 WY Wyodak 6101BW91 2009 7 0.2813 WY Wyodak 6101BW91 2009 8 0.2731 WY Wyodak 6101BW91 2009 9 0.255 WY Wyodak 6101BW91 2009 10 0.2613WY Wyodak 6101BW91 2009 11 0.262

WY Wyodak 6101BW91 2009 12 0.2812 WY Wyodak 6101BW91 2010 1 0.2508 WY Wyodak 6101BW91 2010 2 0.2615 WY Wyodak 6101BW91 2010 3 0.2551 WY Wyodak 6101BW91 2010 4 0.2734 WY Wyodak 6101BW91 2010 5 0.273 WY Wyodak 6101BW91 2010 6 0.2818 WY Wyodak 6101BW91 2010 7 0.2909 WY Wyodak 6101BW91 2010 8 0.2806 WY Wyodak 6101BW91 2010 9 0.2954 WY Wyodak 6101BW91 2010 10 0.2757 WY Wyodak 6101BW91 2010 11 0.2782 WY Wyodak 6101BW91 2010 12 0.2596 WY Wyodak 6101BW91 2011 1 0.2871 WY Wyodak 6101BW91 2011 2 0.2901 WY Wyodak 6101BW91 2011 3 0.2645

WY Wyodak 6101BW91 2011 4 0.0912 WY Wyodak 6101BW91 2011 5 0.2351 WY Wyodak 6101BW91 2011 6 0.172 WY Wyodak 6101BW91 2011 7 0.1525 WY Wyodak 6101BW91 2011 8 0.1957 WY Wyodak 6101BW91 2011 9 0.1683 WY Wyodak 6101BW91 2011 10 0.1703 WY Wyodak 6101BW91 2011 11 0.1994 WY Wyodak 6101BW91 2011 12 0.1821 WY Wyodak 6101BW91 2012 1 0.1719 WY Wyodak 6101BW91 2012 2 0.185 WY Wyodak 6101BW91 2012 3 0.2103 WY Wyodak 6101BW91 2012 4 0.191 WY Wyodak 6101BW91 2012 5 0.1921 WY Wyodak 6101BW91 2012 6 0.1837 WY Wyodak 6101BW91 2012 7 0.186 WY Wyodak 6101BW91 2012 8 0.1854 WY Wyodak 6101BW91 2012 9 0.1956 WY Wyodak 6101BW91 2012 10 0.2039 WY Wyodak 6101BW91 2012 11 0.1908 WY Wyodak 6101BW91 2012 12 0.1877 WY Wyodak 6101BW91 2013 1 0.1813 WY Wyodak 6101BW91 2013 2 0.1923 WY Wyodak 6101BW91 2013 3 0.192Startup 2011

AireJet LNB operationalState Facility Name Facility ID (ORISPL) Unit ID YearMonth Avg. NOx Rate (lb/MMBtu)

MO Sikeston 6768 12010 1 0.2141 MO Sikeston 6768 12010 2 0.2125 MO Sikeston 6768 12010 3 0.2067 MO Sikeston 6768 12010 4 0.2039 MO Sikeston 6768 12010 5 0.2034 MO Sikeston 6768 12010 6 0.216 MO Sikeston 6768 12010 7 0.2069 MO Sikeston 6768 12010 8 0.2125 MO Sikeston 6768 12010 9 0.2086 MO Sikeston 6768 12010 10 0.2128 MO Sikeston 6768 12010 11 0.2238 MO Sikeston 6768 12010 12 0.2129 MO Sikeston 6768 12011 1 0.2082 MO Sikeston 6768 12011 2 0.207 MO Sikeston 6768 12011 3 0.2202 MO Sikeston 6768 12011 4 0.2019 MO Sikeston 6768 12011 5 0.2157 MO Sikeston 6768 12011 6 0.2108 MO Sikeston 6768 12011 7 0.2148 MO Sikeston 6768 12011 8 0.2245 MO Sikeston 6768 12011 9 0.2177 MO Sikeston 6768 12011 10 0.2222 MO Sikeston 6768 12011 11 0.2268 MO Sikeston 6768 12011 12 0.2328 MO Sikeston 6768 12012 1 0.2347 MO Sikeston 6768 12012 2 0.24 MO Sikeston 6768 12012 3 0.258 MO Sikeston 6768 12012 4 MO Sikeston 6768 12012 5 0.2185 MO Sikeston 6768 12012 6 0.2254 MO Sikeston 6768 12012 7 0.2313 MO Sikeston 6768 12012 8 0.2252 MO Sikeston 6768 12012 9 0.226 MO Sikeston 6768 12012 10 0.2237 MO Sikeston 6768 12012 11 0.2228 MO Sikeston 6768 12012 12 0.2174 MO Sikeston 6768 12013 1 0.225 MO Sikeston 6768 12013 2 0.2148 MO Sikeston 6768 12013 3 0.2219State Facility Name Facility ID (ORISPL) Unit ID YearMonth

AR Flint Creek Power Plant 6138 12008 1 AR Flint Creek Power Plant 6138 12008 2 AR Flint Creek Power Plant 6138 12008 3 AR Flint Creek Power Plant 6138 12008 4 AR Flint Creek Power Plant 6138 12008 5 AR Flint Creek Power Plant 6138 12008 6 AR Flint Creek Power Plant 6138 12008 7 AR Flint Creek Power Plant 6138 12008 8 AR Flint Creek Power Plant 6138 12008 9 AR Flint Creek Power Plant 6138 12008 10 AR Flint Creek Power Plant 6138 12008 11 AR Flint Creek Power Plant 6138 12008 12 AR Flint Creek Power Plant 6138 12009 1 AR Flint Creek Power Plant 6138 12009 2 AR Flint Creek Power Plant 6138 12009 3 AR Flint Creek Power Plant 6138 12009 4 AR Flint Creek Power Plant 6138 12009 5 AR Flint Creek Power Plant 6138 12009 6 AR Flint Creek Power Plant 6138 12009 7 AR Flint Creek Power Plant 6138 12009 8 AR Flint Creek Power Plant 6138 12009 9 AR Flint Creek Power Plant 6138 12009 10 AR Flint Creek Power Plant 6138 12009 11 AR Flint Creek Power Plant 6138 12009 12 AR Flint Creek Power Plant 6138 12010 1 AR Flint Creek Power Plant 6138 12010 2 AR Flint Creek Power Plant 6138 12010 3 AR Flint Creek Power Plant 6138 12010 4 AR Flint Creek Power Plant 6138 12010 5 AR Flint Creek Power Plant 6138 12010 6 AR Flint Creek Power Plant 6138 12010 7 AR Flint Creek Power Plant 6138 12010 8 AR Flint Creek Power Plant 6138 12010 9 AR Flint Creek Power Plant 6138 12010 10 AR Flint Creek Power Plant 6138 12010 11 AR Flint Creek Power Plant 6138 12010 12 AR Flint Creek Power Plant 6138 12011 1 AR Flint Creek Power Plant 6138 12011 2 AR Flint Creek Power Plant 6138 12011 3 AR Flint Creek Power Plant 6138 12011 4 AR Flint Creek Power Plant 6138 12011 5 AR Flint Creek Power Plant 6138 12011 6 AR Flint Creek Power Plant 6138 12011 7 AR Flint Creek Power Plant 6138 12011 8 AR Flint Creek Power Plant 6138 12011 9 AR Flint Creek Power Plant 6138 12011 10AR Flint Creek Power Plant 6138 12011 11

AR Flint Creek Power Plant 6138 12011 12 AR Flint Creek Power Plant 6138 12012 1 AR Flint Creek Power Plant 6138 12012 2 AR Flint Creek Power Plant 6138 12012 3 AR Flint Creek Power Plant 6138 12012 4 AR Flint Creek Power Plant 6138 12012 5 AR Flint Creek Power Plant 6138 12012 6 AR Flint Creek Power Plant 6138 12012 7 AR Flint Creek Power Plant 6138 12012 8 AR Flint Creek Power Plant 6138 12012 9 AR Flint Creek Power Plant 6138 12012 10 AR Flint Creek Power Plant 6138 12012 11 AR Flint Creek Power Plant 6138 12012 12 AR Flint Creek Power Plant 6138 12013 1 AR Flint Creek Power Plant 6138 12013 2 AR Flint Creek Power Plant 6138 12013 3Avg. NOx Rate (lb/MMBtu) 0.2821 0.2872 0.2652 0.2642 0.2841 0.2675 0.2564 0.2426 0.2415 0.2575 0.2658 0.2697 0.2669 0.2706 0.2568 0.2535 0.2663 0.2523 0.2525 0.2557 0.2512

0.2097 0.1914 0.2549 0.2658 0.2699 0.2385 0.2752 0.2539 0.2673 0.2574 0.261 0.254 0.2649 0.2699 0.2783 0.2823 0.2728 0.2573 0.2695 0.2545 0.2516 0.2428 0.24590.2815 0.2803 0.2871 0.2875 0.2788 0.2792 0.2512 0.2673 0.2841 0.2724 0.2655 0.2606 0.2617 0.268 0.2829 0.2815 0.2784