Tilden Taconite Indurating Line #1

Wet Scrubber (Absorber after existing ESP) based on UTac Purchased Equipment Costs

Flow rate (acfm) 1,148,000 Tilden 9/11/2009 726,000 UTac 9/7/2006 Table 6

Flue Gas Temperature (degrees F) 300 Tilden 12/28/2006 121 UTac 9/7/2006 Table 6

Uncontrolled SO2 emissions (TPY) 1,153.20 Tilden 9/11/2009

Absorber + auxiliary equipment $ 34,869,327 Tilden 12/28/2006 TCI (not used) $ 5,624,436 UTac 9/7/2006 Table 6

Retrofit factor 60% Tilden 12/28/2006 1 assumed

SO2 Control efficiency 80% Tilden 12/28/2006

Operating Hours per Year 7,680 Tilden 9/11/2009

Operating Hours per Shift 8 assumed

Operating Shifts per Year 960 calculated

Utilization 100% Tilden 9/11/2009

Operating Labor Cost ($/hr) $ 85.00 Tilden 9/11/2009

Maintenance Labor Cost ($/hr) $ 85.00 Tilden 9/11/2009

Waste generation (gpm) 1,182 calculated from Tilden 9/11/2009 varies directly with assumed control efficiency

Waste disposal cost ($/mgal) $ 3.80 OAQPS Control Cost Manual example

Solvent usage (gpm) 1,459 calculated from Tilden 9/11/2009 varies directly with assumed control efficiency

Solvent cost ($/kgal) $ 0.40 Tilden 9/11/2009

Chemical usage (lb/hr) 421 calculated from Tilden 9/11/2009 varies directly with assumed control efficiency

Chemical cost ($/ton) $ 90.80 Tilden 9/11/2009

Electrical Cost ($/kWh) $ 0.05 Tilden 9/11/2009

Electrical Use (kW/hr) 1,999 Tilden 9/11/2009

Inflation Since 2009 1.06 CEPCI 2010/CEPCI 2009

Equipment Life (yr) 20 Tilden 9/11/2009

Interest Rate (%) 7.00% Tilden 9/11/2009

Given/Assumed
Tilden Taconite Indurating Line #1

Capital Cost factors for Gas Absorbers--OAQPS Control Cost Manual, Chap 5

Cost Item Factor Cost

Direct Costs

Purchased equipment costs

Absorber + auxiliary equipment, EC A $7,814,277 based on $ 5,624,436 UTac 9/7/2006 Table 6

Instrumentation 0.10 A $781,428

Sales taxes 0.065 A $507,928

Freight 0.05 A $390,714

Purchased equipment cost, PEC B= 1.18 A $9,494,346

Direct installation costs

Foundations & supports 0.12 B $1,139,322

Handling & erection 0.40 B $3,797,738

Electrical 0.01 B $94,943

Piping 0.30 B $2,848,304

Insulation 0.01 B $94,943

Painting 0.01 B $94,943

Direct installation costs x 1 x 0.85 B $8,070,194

Site preparation As required, SP

Buildings As required, Bldg.

Total Direct Costs, DC 1.85 B+SP+Bldg $17,564,540

Indirect Costs (installation)

Engineering 0.10 B $949,435

Construction and field expenses 0.10 B $949,435

Contractor fees 0.10 B $949,435

Start-up 0.01 B $94,943

Performance test 0.01 B $94,943

Contingencies 0.03 B $284,830

Total Indirect Costs, IC 0.35 B $3,323,021

Total Capital Investment = DC + IC 2.20 B+SP+Bldg $20,887,561
Tilden Taconite Indurating Line #1

Annual Cost factors for Gas Absorbers--OAQPS Control Cost Manual, Chap 5

Cost Item Factor Cost

Direct Annual Costs, DC

Operating labor

Operator 0.5 hr/shift $40,800

Supervisor 15% of operator $6,120

Operating materials

Solvent 1459 gpm * $ 0.40 /kgal = $268,960

Chemicals 420.8 lb/hr * $ 90.80 /ton = $146,721

Wastewater Disposal 1182 Gal/min * $ 3.80 /mGal = $ 2,070,430

Maintenance

Labor 0.5 hr/shift $40,800

Material 100.00% of maintenance $40,800

Electricity All electricity equal to:

1,999 kW/hr * $ 0.05 unit cost = $798,321

Total DC $3,412,951

Indirect Annual Costs, IC

Overhead 60% of total labor and material costs $77,112

Administrative charges 2% of Total Capital Investment $417,751

Property tax 1% of Total Capital Investment $208,876

Insurance 1% of Total Capital Investment $208,876

Capital recovery 0.0944 * Total Capital Investment $1,971,638

Total IC $2,884,252

Total Annual Cost DC + IC $6,297,204
Tilden Taconite Indurating Line #1 SO2

Uncontrolled emissions (TPY) 1,153.20

Control efficiency (%) 80%

Emission reduction (TPY) 923

Controlled emissions (TPY) 231

Total annualized cost ($/yr) $6,297,204

Cost/ton removed ($/T) $6,826