Average Emissions (tons per year) Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Total 2001 - 2010 5752 4719 6005 13317 12602 42395 2001 - 2003 5715 4756 5769 16300 12152 44691 2006 - 2010 5774 4669 6057 12309 12669 41478

Average Emission Rate (lb/MMBtu)

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 2001 - 2010 0.78 0.63 0.59 0.50 0.50 2001 - 2003 0.77 0.60 0.58 0.49 0.48 2006 - 2010 0.78 0.64 0.59 0.48 0.49

Average Capacity Factor

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 2001 - 2010 0.89 0.90 0.96 0.76 0.75 2001 - 2003 0.88 0.95 0.93 0.85 0.73 2006 - 2010 0.89 0.88 0.96 0.73 0.74

APS anticipates capacity factors for Units 4 and 5 from 2015 - 2030 to range between 75 - 81%. Assume this is true until 2064. Assume 81% capacity Assume effective date of January 1, 2012 Interim limits: 2015 = 0.11, 2016 = Unit 1, 2, 3 = 0.21,0.17,0.16

Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Total Unit 1 Unit 2 2001 - 2010 5752 4719 6005 13317 12602 42395 5752 4719 2011 5752 4719 6005 13317 12602 42395 5752 4719 2012 5752 4719 6005 13317 12602 42395 5752 4719 2013 5752 4719 6005 13317 12602 42395 5752 4719 2014 5752 4719 6005 13317 12602 42395 0 0 2015 5752 4719 6005 13317 2772 32566 0 0 2016 1553 1274 1621 13317 2772 20537 0 0 2017 1150 944 1201 2663 2520 8479 0 0 2018 1150 944 1201 2663 2520 8479 0 0 2019 1150 944 1201 2663 2520 8479 0 0 2020 8479 2021 8479 2022 8479 2023 8479 2024 8479 2025 8479 2026 8479 2027 8479 2028 8479 2029 8479 2030 8479 BART2031 8479

2032 8479 2033 8479 2034 8479 2035 8479 2036 8479 2037 8479 2038 8479 2039 8479 2040 8479 2041 8479 2042 8479 2043 8479 2044 8479 2045 8479 2046 8479 2047 8479 2048 8479 2049 8479 2050 8479 2051 8479 2052 8479 2053 8479 2054 8479 2055 8479 2056 8479 2057 8479 2058 8479 2059 8479 2060 8479 2061 8479 2062 8479 2063 8479 2064 8479

TOTAL 629674APS anticipates capacity factors for Units 4 and 5 from 2015 - 2030 to range between 75 - 81%. Assume this is true until 2064.

Unit 3 Unit 4 Unit 5 Total 6005 13317 12602 42395same 6005 13317 12602 42395same 6005 13317 12602 42395same 6005 13317 12602 42395same 0 13317 12602 25919alternative 0 13317 12602 25919alternative 0 13317 12602 25919BART 0 13317 12602 25919BART 0 13317 2727 16044BART 0 2829 2727 5556alternative* corrected for CF to 0.81 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 Alternative5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556 5556

502462

if CF=91% 534349 if CF = 100% 563047STATE FACILITY_NAME ORISPL_CODE

UNITID OP_YEARASSOC_STACKS PRG_CODE_INFO

SUM_OP_TIME

NUM_MONTHS_REPORTED NM Four Corners Steam Elec Station 2442 1 2001 ARP 7532.46 12 NM Four Corners Steam Elec Station 2442 1 2002 ARP 7432.28 12 NM Four Corners Steam Elec Station 2442 1 2003 ARP 8295.09 12 NM Four Corners Steam Elec Station 2442 1 2004 ARP 8329.77 12 NM Four Corners Steam Elec Station 2442 1 2005 ARP 7763.7 12 NM Four Corners Steam Elec Station 2442 1 2006 ARP 8644.84 12 NM Four Corners Steam Elec Station 2442 1 2007 ARP 8325.13 12 NM Four Corners Steam Elec Station 2442 1 2008 ARP 7724.32 12 NM Four Corners Steam Elec Station 2442 1 2009 ARP 8333.4 12 NM Four Corners Steam Elec Station 2442 1 2010 ARP 8288.71 12 NM Four Corners Steam Elec Station 2442 2 2001 ARP 7573.09 12 NM Four Corners Steam Elec Station 2442 2 2002 ARP 8128.86 12 NM Four Corners Steam Elec Station 2442 2 2003 ARP 8011.77 12 NM Four Corners Steam Elec Station 2442 2 2004 ARP 7417.77 12 NM Four Corners Steam Elec Station 2442 2 2005 ARP 8556.81 12 NM Four Corners Steam Elec Station 2442 2 2006 ARP 8427.4 12 NM Four Corners Steam Elec Station 2442 2 2007 ARP 7729.22 12 NM Four Corners Steam Elec Station 2442 2 2008 ARP 8141.94 12 NM Four Corners Steam Elec Station 2442 2 2009 ARP 8263.55 12 NM Four Corners Steam Elec Station 2442 2 2010 ARP 7386.74 12 NM Four Corners Steam Elec Station 2442 3 2001 ARP 8403.72 12 NM Four Corners Steam Elec Station 2442 3 2002 ARP 8393.81 12 NM Four Corners Steam Elec Station 2442 3 2003 ARP 7479.4 12 NM Four Corners Steam Elec Station 2442 3 2004 ARP 8460.66 12 NM Four Corners Steam Elec Station 2442 3 2005 ARP 8336.11 12 NM Four Corners Steam Elec Station 2442 3 2006 ARP 6782.38 12 NM Four Corners Steam Elec Station 2442 3 2007 ARP 8255.3 12 NM Four Corners Steam Elec Station 2442 3 2008 ARP 8430.55 12 NM Four Corners Steam Elec Station 2442 3 2009 ARP 7751.43 12 NM Four Corners Steam Elec Station 2442 3 2010 ARP 8096.55 12 NM Four Corners Steam Elec Station 2442 4 2001 ARP 8039.58 12 NM Four Corners Steam Elec Station 2442 4 2002 ARP 8127.69 12 NM Four Corners Steam Elec Station 2442 4 2003 ARP 8272.82 12 NM Four Corners Steam Elec Station 2442 4 2004 ARP 6403.35 12 NM Four Corners Steam Elec Station 2442 4 2005 ARP 8050.43 12 NM Four Corners Steam Elec Station 2442 4 2006 ARP 8318.51 12 NM Four Corners Steam Elec Station 2442 4 2007 ARP 7320.5 12 NM Four Corners Steam Elec Station 2442 4 2008 ARP 8251.96 12 NM Four Corners Steam Elec Station 2442 4 2009 ARP 8019.6 12 NM Four Corners Steam Elec Station 2442 4 2010 ARP 5999.76 12 NM Four Corners Steam Elec Station 2442 5 2001 ARP 8047.89 12 NM Four Corners Steam Elec Station 2442 5 2002 ARP 5851.11 12 NM Four Corners Steam Elec Station 2442 5 2003 ARP 8024.93 12 NM Four Corners Steam Elec Station 2442 5 2004 ARP 8525.76 12 NM Four Corners Steam Elec Station 2442 5 2005 ARP 7534.97 12 NM Four Corners Steam Elec Station 2442 5 2006 ARP 8047.56 12NM Four Corners Steam Elec Station 2442 5 2007 ARP 6916.81 12 NM Four Corners Steam Elec Station 2442 5 2008 ARP 6125.62 12 NM Four Corners Steam Elec Station 2442 5 2009 ARP 7905 12 NM Four Corners Steam Elec Station 2442 5 2010 ARP 8103.3 12SO2_MASSNOX_RATENOX_MASSCO2_MASSHEAT_INPUT

3566.455 0.78275985.947 152617814890648 3113.61 0.76735445.319 140831213740127 3111.475 0.76795712.364 150002914616288 1398.603 0.79156043.827 153571114986803 879.711 0.78155464.972 141021613764409 910.905 0.80376354.429 161177615708239 669.776 0.78335862.996 151381914752721 705.264 0.75895214.653 137923713448000 787.3 0.77265558.126 145152914146647 926.653 0.7775878.443 152792514884840 3965.377 0.57624601.275 158968215513243 3345.383 0.6135 5204.02 170692216632804 2941.756 0.61764461.418 144936214138654 1344.951 0.66334447.028 136001213261038 1054.673 0.65455127.546 159474415546054 901.637 0.65315024.074 156755715272703 657.754 0.65454583.088 141987613824400 737.682 0.63664617.035 146124214227354 856.52 0.63244771.136 152380814850438 772.501 0.64154350.114 136604113318084 5246.901 0.58476409.766 221271921567143 4324.269 0.57015753.989 203720819873581 3833.945 0.57785142.545 177725017341579 2222.69 0.60036307.468 213436720819151 1566.637 0.58376150.756 213817220865669 1357.594 0.60215343.546 175388017101624 1315.595 0.61036632.933 220351021491044 1409.568 0.5882 6557.87 226973122136687 1091.754 0.56195678.384 203063319787373 1214.569 0.57786072.626 211711920638352 13374.96 0.5378 16267.84 611968859728145 13274.52 0.5656 16502.8 592680957787846 12458.57 0.5648 16129.31 581730656712865 6197.487 0.46459996.649 432612342188456 4537.96 0.4577 12732.68 562133754882183 5901.055 0.4881 14005.93 579484056476068 3742.74 0.4836 12080.93 506199649363579 4266.779 0.4956 13934.68 572313855776903 4492.555 0.4846 13093.68 545941853209468 3092.727 0.45338429.244 362695635356875 13410.03 0.4923 14034.82 577181256316988 8789.576 0.45028670.753 385089437592636 12748.53 0.484413750.92 574973256065980 9778.822 0.4945 13947.39 575004256059669 4613.788 0.472 12267.53 525098951267821 6121.132 0.4978 13920.6 5667745552746523852.876 0.4946 11923.11 488557347653768

3279.102 0.47939987.241 418249740765124 5221.523 0.4806 13409.2 561760454780467 5036.183 0.496 14106.64 576135456190668STATE FACILITY_NAME UNITIDOP_YEARSUM_OP_TIME NUM_MONTHS_REPORTED SO2_MASSNOX_RATENOX_MASSCO2_MASS NM Four Corners Steam Elec Station 1 2001 7532.46 12 3566.455 0.78275985.947 1526178 NM Four Corners Steam Elec Station 1 2002 7432.28 12 3113.61 0.7673 5445.319 1408312 NM Four Corners Steam Elec Station 1 2003 8295.09 12 3111.475 0.76795712.364 1500029 NM Four Corners Steam Elec Station 1 2004 8329.77 12 1398.603 0.7915 6043.827 1535711 NM Four Corners Steam Elec Station 1 2005 7763.7 12 879.711 0.7815 5464.972 1410216 NM Four Corners Steam Elec Station 1 2006 8644.84 12 910.905 0.80376354.429 1611776 NM Four Corners Steam Elec Station 1 2007 8325.13 12 669.776 0.7833 5862.996 1513819 NM Four Corners Steam Elec Station 1 2008 7724.32 12 705.264 0.75895214.653 1379237 NM Four Corners Steam Elec Station 1 2009 8333.4 12 787.3 0.77265558.126 1451529 NM Four Corners Steam Elec Station 1 2010 8288.71 12 926.653 0.7775878.443 1527925

NM Four Corners Steam Elec Station 2 2001 7573.09 12 3965.377 0.57624601.275 1589682 NM Four Corners Steam Elec Station 2 2002 8128.86 12 3345.383 0.6135 5204.02 1706922 NM Four Corners Steam Elec Station 2 2003 8011.77 12 2941.756 0.61764461.418 1449362 NM Four Corners Steam Elec Station 2 2004 7417.77 12 1344.951 0.66334447.028 1360012 NM Four Corners Steam Elec Station 2 2005 8556.81 12 1054.673 0.6545 5127.546 1594744 NM Four Corners Steam Elec Station 2 2006 8427.4 12 901.637 0.65315024.074 1567557 NM Four Corners Steam Elec Station 2 2007 7729.22 12 657.754 0.65454583.088 1419876 NM Four Corners Steam Elec Station 2 2008 8141.94 12 737.682 0.63664617.035 1461242 NM Four Corners Steam Elec Station 2 2009 8263.55 12 856.52 0.63244771.136 1523808 NM Four Corners Steam Elec Station 2 2010 7386.74 12 772.501 0.64154350.114 1366041

NM Four Corners Steam Elec Station 3 2001 8403.72 125246.901 0.58476409.766 2212719 NM Four Corners Steam Elec Station 3 2002 8393.81 124324.269 0.57015753.989 2037208 NM Four Corners Steam Elec Station 3 2003 7479.4 12 3833.945 0.57785142.545 1777250 NM Four Corners Steam Elec Station 3 2004 8460.66 12 2222.69 0.6003 6307.468 2134367 NM Four Corners Steam Elec Station 3 2005 8336.11 12 1566.637 0.58376150.756 2138172 NM Four Corners Steam Elec Station 3 2006 6782.38 12 1357.594 0.60215343.546 1753880 NM Four Corners Steam Elec Station 3 2007 8255.3 12 1315.595 0.6103 6632.933 2203510 NM Four Corners Steam Elec Station 3 2008 8430.55 12 1409.568 0.5882 6557.87 2269731 NM Four Corners Steam Elec Station 3 2009 7751.43 12 1091.754 0.56195678.384 2030633 NM Four Corners Steam Elec Station 3 2010 8096.55 12 1214.569 0.57786072.626 2117119

NM Four Corners Steam Elec Station 4 2001 8039.58 12 13374.96 0.5378 16267.84 6119688 NM Four Corners Steam Elec Station 4 2002 8127.69 12 13274.52 0.5656 16502.8 5926809 NM Four Corners Steam Elec Station 4 2003 8272.82 12 12458.57 0.5648 16129.31 5817306 NM Four Corners Steam Elec Station 4 2004 6403.35 12 6197.487 0.46459996.649 4326123 NM Four Corners Steam Elec Station 4 2005 8050.43 12 4537.96 0.4577 12732.68 5621337 NM Four Corners Steam Elec Station 4 2006 8318.51 125901.055 0.4881 14005.93 5794840 NM Four Corners Steam Elec Station 4 2007 7320.5 12 3742.74 0.4836 12080.93 5061996 NM Four Corners Steam Elec Station 4 2008 8251.96 124266.779 0.4956 13934.68 5723138 NM Four Corners Steam Elec Station 4 2009 8019.6 124492.555 0.4846 13093.68 5459418 NM Four Corners Steam Elec Station 4 2010 5999.76 12 3092.727 0.45338429.244 3626956

NM Four Corners Steam Elec Station 5 2001 8047.89 12 13410.03 0.4923 14034.82 5771812 NM Four Corners Steam Elec Station 5 2002 5851.11 128789.576 0.45028670.753 3850894 NM Four Corners Steam Elec Station 5 2003 8024.93 12 12748.53 0.4844 13750.92 5749732 NM Four Corners Steam Elec Station 5 2004 8525.76 129778.822 0.4945 13947.39 5750042 NM Four Corners Steam Elec Station 5 2005 7534.97 124613.788 0.472 12267.53 5250989 NM Four Corners Steam Elec Station 5 2006 8047.56 12 6121.132 0.4978 13920.6 5667745 NM Four Corners Steam Elec Station 5 2007 6916.81 12 3852.876 0.4946 11923.11 4885573 NM Four Corners Steam Elec Station 5 2008 6125.62 12 3279.102 0.47939987.241 4182497 NM Four Corners Steam Elec Station 5 2009 7905 125221.523 0.4806 13409.2 5617604 NM Four Corners Steam Elec Station 5 2010 8103.3 125036.183 0.496 14106.64 5761354HEAT_INPUT MMBtu/hrMax Annual Heat input Capacity Factor Hours factor 14890647.97 1976.864 16319880 0.91 0.86 13740127.41 1848.71 16319880 0.84 0.85 14616287.87 1762.041 16319880 0.90 0.95 14986803.16 1799.186 16319880 0.92 0.95 13764408.69 1772.919 16319880 0.84 0.89 15708238.77 1817.065 16319880 0.96 0.99 14752721.14 1772.071 16319880 0.90 0.95 13448000.13 1740.995 16319880 0.82 0.88 14146647.34 1697.584 16319880 0.87 0.95 14884839.63 1795.797 16319880 0.91 0.95

15513243.38 2048.469 16319880 0.95 0.86 16632803.55 2046.142 16319880 1.02 0.93 14138653.9 1764.735 16319880 0.87 0.91 13261037.86 1787.739 16319880 0.81 0.85 15546053.87 1816.805 16319880 0.95 0.98 15272702.55 1812.267 16319880 0.94 0.96 13824400.26 1788.589 16319880 0.85 0.88 14227353.87 1747.416 16319880 0.87 0.93 14850437.68 1797.101 16319880 0.91 0.94 13318083.72 1802.972 16319880 0.82 0.84

21567143.33 2566.381 21024000 1.03 0.96 19873581.19 2367.647 21024000 0.95 0.96 17341579.33 2318.579 21024000 0.82 0.85 20819150.56 2460.701 21024000 0.99 0.97 20865668.63 2503.046 21024000 0.99 0.95 17101623.59 2521.478 21024000 0.81 0.77 21491043.79 2603.303 21024000 1.02 0.94 22136686.84 2625.77 21024000 1.05 0.96 19787373.17 2552.738 21024000 0.94 0.88 20638352.15 2549.03 21024000 0.98 0.92

59728145.47 7429.262 68380560 0.87 0.92 57787846.28 7109.996 68380560 0.85 0.93 56712865 6855.324 68380560 0.83 0.94 42188456.1 6588.498 68380560 0.62 0.73 54882182.51 6817.298 68380560 0.80 0.92 56476067.94 6789.205 68380560 0.83 0.95 49363578.52 6743.198 68380560 0.72 0.84 55776902.55 6759.231 68380560 0.82 0.94 53209467.56 6634.928 68380560 0.78 0.92 35356874.62 5893.048 68380560 0.52 0.68

56316988.35 6997.733 68380560 0.82 0.92 37592636.02 6424.873 68380560 0.55 0.67 56065979.82 6986.476 68380560 0.82 0.92 56059669.26 6575.328 68380560 0.82 0.97 51267821.14 6803.985 68380560 0.75 0.86 55274651.9 6868.498 68380560 0.81 0.92 47653768.47 6889.559 68380560 0.70 0.79 40765124.39 6654.857 68380560 0.60 0.70 54780466.96 6929.85 68380560 0.80 0.90 56190667.93 6934.294 68380560 0.82 0.93From Part 71 Permit From 2007 B&V

Report Heat Rate Heat Input Max Heat Rate Max Heat Rate Unit MW BTU/KWH MMBTU/hr MMBTU/hr MMBTU/hr 1 170 10,956 1,863 2,551 1,863 2 170 10,956 1,863 2,551 1,863 3 220 10,908 2,400 3,387 2,400 4 750 9,881 7,411 8,612 7,806 5 750 9,881 7,411 8,612 7,806 2,060 20,946 Calculations from APS Submission on Alternative

Emission Control Strategy