Document JyXkDdBvG0k105M8mEGa3YEv

BURNS b'lcIDONNELL Mr. Criswell June 23, 2023 Page 6 Table 2: Summary of Capital, 08,M and Levelizal Costs for Class 5 Estimate Method, 2022 Emission Baseline PM-10 Control Alternative (Ranked by PM-10 Rate) Upstream ESP Upstream FF Wet ESP Reheat ESP Reheat FF 2022 Baseline (Scrubber) Summary of Particulate Emissions Control Costs from Colstrip PM Emissions Economic Impacts Removal Installed Annual Total Efficiency Emission Hourly Annual Emission Capital 0& M Annual % (Note B) 54.55 54.55 54.55 54.55 54.55 Rate lb/MMBtu 0.010 0.010 0.010 0.010 0.010 Emission Lbs/Hr 152 152 152 152 152 Emission Tons/yr 566 566 566 566 566 Reduction Tons/yr 679 679 679 679 679 Cost in millions $ 486.0 404.9 744.5 263.5 351.2 Cost in millions $ 29.8 29.9 16.6 10.5 14.9 Cost millionsiyr 87.4 78.0 104.9 41.8 56.5 0.022 334 1245 N/A N/A N/A Average Control Cost $/ton 128,700 114,900 154,500 61,600 83,200 N/A Sierra Club FOIA 2025-EPA-04883 ED_018388_00000307-00037 SC_EVERSPLIT0006133