OXIDES OF SULFUR ANNUAL EMISSION REPORT OXIDES OF SULFUR ANNUAL EMISSION REPORT

Company Name Kennecott Utah Copper CompanySite Name Smelter & Ref ineryCompany ID - 255Site ID - 10346NOTE: Be aware that this report uses different methods of calculating emissions than are required for the 2006 Emissions Inventory.

Secondary Control

Amount Units/Yr Comments

1 1998 13969 SME011 30300512 Yes 3763 8760 hours/y ear 0 0 0 0 0 10 Wet Scrubber 1 5.40% 10 178.5 lbs/hr CEM. Includes emissions f rom multiple sources

2

2006 (using 1998 method of calculation) 13969 SME011 30300512 Yes 3763 8760 hours/y ear 0 0 0 0 0 10 Wet Scrubber 1 0 10 135.52 lbs/hr CEM. Includes emissions f rom multiple sources

3

2006 (if method of calculation is different from 1998) 13969 SME011 30300512 Yes 3763 0 hours/y ear 0 0 0 0 0 0 10 Wet Scrubber 1 0 10 0 lbs/hr CEM. Includes emissions from multiple sources

Secondary Control

Amount Units/Yr

1 1998 13970 SME008 30500599 No 3763 1.503 mmscf /y r 1035 btu/cu f t 0 0 3 0.6 lbs/million cu. Ft.

2

2006 (using 1998 method of calculation) 13970 SME008 30500599 No 3763 5.595 mmscf /y r 1038 btu/cu f t 0 0 0 3 0.6 lbs/million cu. Ft.

3

2006 (if method of calculation is different from 1998) 13970 SME008 30500599 No 3763 0 mmscf /y r 0 btu/cu f t 0 0 0 3 0 lbs/million cu. Ft.

Secondary Control

Amount Units/Yr

1 1998 13993 REF002a/REF003a 10200602 Yes 0 568.7 mmscf /y r 0 0 0 0 0 0 0 3 0.6

2

2006 (using 1998 method of calculation) 13993 REF002a/REF003a 10200602 Yes 0 380.25 mmscf /y r 0 0 1038 0 0 0 0 3 0.6

3

2006 (if method of calculation is different from 1998) 13993 REF002a/REF003a 10200602 Yes 0 0 mmscf /y r 0 0 0 0 0 0 0 3 0

Secondary Control

Amount Units/Yr

1 1998 13994 REF002b/REF003b 10200602 Yes 0 1.53 gal/y ear 0 0 0 0 0 0 0 3 7.1

2

2006 (using 1998 method of calculation) 13994 REF002b/REF003b 10200602 Yes 0 0.14 gal/y ear 0 0 0 0 0 0 0 3 7.1

3

2006 (if method of calculation is different from 1998) 13994 REF002b/REF003b 10200602 Yes 0 0 gal/y ear 0 0 0 0 0 0 0 3 0

Secondary Control

Amount Units/Yr

1 1998 13998 REF006 30300599 No 3776 8760 hours/y ear 0 0 0 0 0 0 13 99 0 1 0.002

2

2006 (using 1998 method of calculation) 13998 REF006 30300599 No 3776 8694 hours/y ear 0 0 0 0 0 0 13 99 0 1 0.08

3

2006 (if method of calculation is different from 1998) 13998 REF006 30300599 No 3776 0 hours/y ear 0 0 0 0 0 0 13 99 0 1 0

Secondary Control

Amount Units/Yr

1 1998 14085 SME016 10500106 No 0 20 mmscf /y r 0 0 0 0 0 0 3 0.6

2

2006 (using 1998 method of calculation) 14085 SME016 10500106 No 0 21.721 mmscf /y r 0 0 1038 0 0 0 0 3 0.6

3

2006 (if method of calculation is different from 1998) 14085 SME016 10500106 No 0 0 mmscf /y r 0 0 0 0 0 0 0 3 0

Secondary Control

Amount Units/Yr

1 1998 14086 SMEWH 10200603 No 0 10 mmscf /y r 0 0 0 0 0 0 3 0.6

2

2006 (using 1998 method of calculation) 14086 SMEWH 10200603 No 0 10.732 mmscf /y r 0 0 1038 0 0 0 0 3 0.6

3

2006 (if method of calculation is different from 1998) 14086 SMEWH 10200603 No 0 0 mmscf /y r 0 0 0 0 0 0 0 3 0

Secondary Control

Amount Units/Yr Units

1 1998 14095 SMEgen1 20200102 No 0 52 hours/y ear 2000 kW 0 0 0 0 99 3 0.000246 kg/kw-hr EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)

2

2006 (using 1998 method of calculation) 14095 SMEgen1 20200102 No 0 39 hours/y ear 2682 kW 0 0 0.05 0 99 0 3 0.000246 kg/kw-hr EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)

3

2006 (if method of calculation is different from 1998) 14095 SMEgen1 20200102 No 0 39 hours/y ear 2682 kW 0 0 0.05 0 99 0 3 0.0004 lbs/hp-hr EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)

Secondary Control

Amount Units/Yr

1 1998 14096 SMEgen2 20200102 No 0 52 hours/y ear 2000 kW 0 0 0 0 3 0.000246 kg/kw-hr

2

2006 (using 1998 method of calculation) 14096 SMEgen2 20200102 No 0 41 hours/y ear 2682 kW 0 0 0.05 0 0 3 0.000246 kg/kw-hr

3

2006 (if method of calculation is different from 1998) 14096 SMEgen2 20200102 No 0 41 hours/y ear 2682 kW 0 0 0.05 0 0 3 0.000405 lbs/hp-hr

Secondary Control

Amount Units/Yr

1 1998 14097 SMEa1p 20200102 No 0 0 hours/y ear 261 kW 0 0 0 0 3 0.001246 kg/kW-hr

2

2006 (using 1998 method of calculation) 14097 SMEa1p 20200102 No 0 0 hours/y ear 350 kW 0 0 0 0 0 3 0.001246 kg/kW-hr

3

2006 (if method of calculation is different from 1998) 14097 SMEa1p 20200102 No 0 0 hours/y ear 350 kW 0 0 0 0 0 3 0 kg/kW-hrThis form is to be used by sources that have emitted 100 tons or more of SOx in any calendar year after 1999, and that are not subject to acid rain continuous monitoring reporting 

requirements (40CFR Part 75). Row 1 in the following table(s) contains historical inventory data for the listed component. Row 2 is used to calculate the 2006 process emissions using 

the same method that was used in the historical data. The inputs required are in green font. To insert the new data you type over the top of the old data. Row 3 (shaded) is used to show and calculate any changes in the method of calculation from 1998 to 2006 (i.g. emission factors, % of sulfur, heating value, controls, breakdowns, estimation methods). If the current method of calculating the SOx emissions does not work with the equation provided in row 3, the calculation should be provided in the row 4. Rows 3 and 4 should have the same 

calculations as contained in the 2006 Emission Inventory.

Emergency backup power gen Diesel #2 (Diesel) 0.000

2006 Calculations

Emergency backup power gen Diesel #2 (Diesel) 0.000Emergency backup power gen Diesel #2 (Diesel) 0.000

Estimate 

Method

Emission 

Factor Units Comments

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Ash

Name of

Primary Control

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Control 

Code (See 

List)

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Control 

Code (See 

List)

Name of

Secondary 

Control

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Year DAQ ID

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

Emergency backup power gen Diesel #2 (Diesel) 0.022

4

2006 Calculations

Emergency backup power gen Diesel #2 (Diesel) 0.028Emergency backup power gen Diesel #2 (Diesel) 0.030

Units Comments

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Ash

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Emissions

(tons/yr)

Control 

Code (See 

List)

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Estimate 

Method

Emission 

Factor

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Year DAQ ID

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

4

2006 Calculations

Emergency backup power gen Diesel #2 (Diesel)Emergency backup power gen 0

Comments

Emergency backup power gen Diesel #2 (Diesel)

Estimate 

Code

Estimate 

Method

Emission 

Factor

Heating

Value Units

%

Sulfur

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Name of

Secondary 

Control

Control 

Code (See 

List)

Name of

Primary Control

Control 

Code (See 

List)

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

How Sulfur 

Content is 

calculated

%

Year DAQ ID Ash

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

lbs/million cu. Ft.

4

2006 Calculations

Water heaters Natural gas 0.003Water heaters Natural gas 0.000

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

lbs/million cu. Ft.

Water heaters Natural gas 0.003 lbs/million cu. Ft.

%

Ash

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

Year DAQ ID calculated

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

lbs/million cu. Ft.

4

2006 Calculations

Space heaters Natural gas 0.006Space heaters Natural gas 0.000

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

lbs/million cu. Ft.

Space heaters Natural gas 0.007 lbs/million cu. Ft.

%

Ash

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

Year DAQ ID calculated

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

lbs/hour

4

2006 Calculations

Sodium based scrubber n/a Sodium Based Scrubber 0.009Sodium based scrubber n/a Sodium Based Scrubber 0.000

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

lbs/hour

Sodium based scrubber n/a Sodium Based Scrubber 0.348 lbs/hour

%

Ash

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

Year DAQ ID calculated

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

lbs/1000 gal.

4

2006 Calculations

Boilers (2) Diesel #2 0.005Boilers (2) Diesel #2 0.000

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

lbs/1000 gal.

Boilers (2) Diesel #2 0.0005 lbs/1000 gal.

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Year DAQ ID Ash

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

Associated 

Stack ID

Raw Material or Fuel 

used

Boilers (2) Natural gas 0.000 lbs/million cu. Ft.

4

2006 Calculations

lbs/million cu. Ft.

Boilers (2) Natural gas 0.114 lbs/million cu. Ft.

Boilers (2) Natural gas 0.171

Units

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Ash

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Estimate 

Method

Emission 

Factor

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel Primary Control

Year DAQ ID

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

Associated 

Stack ID

4

2006 Calculations

0.000

Acid Plant Preheater Natural Gas 0.002Acid Plant Preheater Natural Gas 0.000

%

Ash

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Acid Plant Preheater Natural Gas

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel Primary Control

Control 

Efficiency 

(%)

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

Year DAQ ID calculated

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

Associated 

Stack ID

Raw Material or Fuel 

used

ESP

Copper smelting Copper concentrate ESP 0.000

4

2006 Calculations

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

781.830

Copper smelting Copper concentrate ESP 593.578

Copper smelting Copper concentrate

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Ash

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions Control 

Efficiency 

(%)

Emissions

(tons/yr)

Design 

Rate Units

If Throughput is a Fuel Primary Control

Name of

Primary Control

0.0280.0210.028

Year DAQ ID

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)

Primary Control

Control 

Efficiency 

(%)

EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)EF*hours/y ear*KW/hour*conv ersion f actor (.0011023)

Secondary Control

Amount Units/Yr

1 1998 14105 REFi210 20300102 No 0 35 hours/y ear 488 hp 0 0 0 0 3 2.1 lbs/1000 hp-hr

2

2006 (using 1998 method of calculation) 14105 REFi210 20300102 No 0 24 hours/y ear 487.5 hp 140000 0 0 0 0 0 2.05 lbs/1000 hp-hr

3

2006 (if method of calculation is different from 1998) 14105 REFi210 20300102 No 0 0 hours/y ear 488 hp 0 0 0 0 0 0 0 lbs/1000 hp-hr

Secondary Control

Amount Units/Yr

1 1998 14180 SMEF 30300510 No 0 8760 hours/y ear 0 0 0 0 0 0 5 36 lbs/hr

2

2006 (using 1998 method of calculation) 14180 SMEF 30300510 No 0 7440 hours/y ear 0 0 0 0 0 0 5.76 5 36 lbs/hr

3

2006 (if method of calculation is different from 1998) 14180 SMEF 30300510 No 0 0 hours/y ear 0 0 0 0 0 0 0 5 0 lbs/hr

Secondary Control

Amount Units/Yr

1 1998 18017 SMEAF 30300505 No 4

2

2006 (using 1998 method of calculation) 18017 SMEAF 30300505 No 149 hrs/y r 0 4 2.456 tons/y r.

3

2006 (if method of calculation is different from 1998) 18017 SMEAF 30300505 No 0 0 0 0 0 4

Secondary Control

Amount Units/Yr

1 1998 14524 SME025(WH) 10200603 No 0 10 mmscf /y r 0 0 1035 btu/cu f t 0 0 3 0.6

2

2006 (using 1998 method of calculation) 14524 SME025(WH) 10200603 No 0 0 mmscf /y r 0 0 1035 btu/cu f t 0 0 0 3 0.6

3

2006 (if method of calculation is different from 1998) 14524 SME025(WH) 10200603 No 0 0 mmscf /y r 0 0 0 btu/cu f t 0 0 0 3 0

Secondary Control

Amount Units/Yr

1 1998 21056 SME026 10200602 Yes 514.53 mmscf /y r 1035 btu/cu f t 0 0 3 0.6 lbs/million cu. Ft.

2

2006 (using 1998 method of calculation) 21056 SME026 10200602 Yes 609.307 mmscf /y r 1038 btu/cu f t 0 0 0 3 0.6 lbs/million cu. Ft.

3

2006 (if method of calculation is different from 1998) 21056 SME026 10200602 Yes 0 mmscf /y r 0 btu/cu f t 0 0 0 3 0 lbs/million cu. Ft.

Component Current Adjusted

EQUIPMENT W ITH NO SOx IN 1998 13969 593.578 593.578

2006 SOx Notes: 13970 0.002 0.002

Tons/year 13993 0.114 0.114

13971 SME011F 0 Accounted f or by main stack CEM. 13994 0.0005 0.00013972 SME011e 0 Accounted f or by main stack CEM. 13998 0.348 0.34813974 SMELH 0 Accounted f or by main stack CEM. 14085 0.007 0.00713975 SME011g 0 Accounted f or by main stack CEM. 14086 0.003 0.00313982 SMEALH 0 Accounted f or by main stack CEM. 14095 0.028 0.02821061 SME011g 0 Accounted f or by main stack CEM. 14096 0.030 0.030

172397 SMEcomp1 0 14097 0.000 0.000172398 SMEcomp2 0.001 14105 0.012 0.012

21062 SMEAP 0.376 14180 139.680 139.68014098 REFi204 0.003 18017 2.456 2.456

14524 0.000 0.000

0.38 21056 0.183 0.183

Other 0.38 0.380TOTAL 736.820 736.820

Includes all acid plant f ugitiv es.

TOTAL

Acid Plant Super Heater LeakSpace HeatersLaunder heatersMatte dry ing and grindingPower houseRotary dry erDiesel CompressorDiesel Compressoranode launder heatersMatte dry ing and grinding

DAQ ID

Point 

Source ID Description of Process

4

2006 Calculations

Holman Boiler 0.183Holman Boiler 0.000

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

Holman Boiler 0.154

%

Ash

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

Year DAQ ID calculated

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

lbs/million cu. Ft.

4

2006 Calculations

Water Heater Natural Gas 0.003Water Heater Natural Gas 0.000

Estimate 

Code

Estimate 

Method

Emission 

Factor Units

lbs/million cu. Ft.

Water Heater Natural Gas 0.000 lbs/million cu. Ft.

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Emissions from 

Breakdown 

(tons/year)

Name of

Primary Control

Control 

Code (See 

List)

Name of

Secondary 

Control

Control 

Code (See 

List)

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Year DAQ ID Ash

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

Associated 

Stack ID

Raw Material or Fuel 

used

Anode Furnace Scrubber breakdowns Blister Copper 0.000 Rough Estimate

4

2006 CalculationsEstimate based on historical stack testing emission rates and fan downtime hours - same methodology as previous years.

Rough Estimate

Anode Furnace Scrubber breakdowns Blister Copper 2.456 Rough EstimateAnode Furnace Scrubber breakdowns Blister Copper 9.450

Estimate 

Method

Emission 

Factor Units Comments

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Ash

Name of

Primary Control

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Control 

Code (See 

List)

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Control 

Code (See 

List)

Name of

Secondary 

Control

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Year DAQ ID

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

Smelter f ugitiv es n/a 0.000

4

2006 Calculations

Smelter f ugitiv es n/a 157.680Smelter f ugitiv es n/a 139.680

Estimate 

Method

Emission 

Factor Units Comments

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Ash

Name of

Primary Control

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Control 

Code (See 

List)

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Control 

Code (See 

List)

Name of

Secondary 

Control

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Year DAQ ID

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

PM emergency generator Diesel #2 (Diesel) 0.000

4

2006 Calculations

PM emergency generator Diesel #2 (Diesel) 0.018PM emergency generator Diesel #2 (Diesel) 0.012

Estimate 

Method

Emission 

Factor Units Comments

Heating

Value Units

%

Sulfur

How Sulfur 

Content is 

calculated

%

Ash

Name of

Primary Control

Primary Control

Control 

Efficiency 

(%)

Emissions

(tons/yr)

Control 

Code (See 

List)

Emissions from 

Breakdown 

(tons/year)

Estimate 

Code

Control 

Code (See 

List)

Name of

Secondary 

Control

Associated 

Stack ID

Raw Material or Fuel 

used

Thruput Generating Emissions

Design 

Rate Units

If Throughput is a Fuel

Year DAQ ID

Pt Source

ID SCC Description of Process

NSPS 

(Yes/No)

4

EF-estimate f rom smelter NOI (Max 24-hr av g)

EF*hours/y ear*kW/hour*2.1 lbs/1000 kW / 2000 lbs/tonEF*hours/y ear*kW/hour*2.1 lbs/1000 kW / 2000 lbs/ton

EF-estimate f rom smelter NOI (Max 24-hr av g)EF-estimate f rom smelter NOI (Max 24-hr av g)

EF*hours/y ear*kW/hour*2.1 lbs/1000 kW / 2000 lbs/ton