**Source** Tons SO2



### Ac **id Plant Tailstack emissions** 967 Em issions measured by CEM 

### Vent Fume Stack 232 Em issions measured by CEM 

### Ac **id Plant By pass Stack**  78 Em issions measured by CEM 

### Smelting Fugitives 6089 Em issions calculated by sulfur balanceEm issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives**Source** Tons SO2 Em issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives 

### Ac **id Plant Tailstack emissions** 1354 Em issions measured by CEM 

### Vent Fume Stack 284 Em issions measured by CEM 

### Ac **id Plant By pass Stack**  122 Em issions measured by CEM 

### Smelting Fugitives 4623 Em issions calculated by sulfur balanceEm issions inventory

reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives2007 Em issions & Calculations

**Source** Tons SO2



### Ac **id Plant Tailstack emissions** 1382 Em issions measured by CEM 

### Vent Fume Stack 782 Em issions measured by CEM 

### Ac **id Plant By pass Stack**  89 Em issions measured by CEM 

### Smelting Fugitives 6858 Em issions calculated by sulfur balance

Page 12007 Em issions & Calculations

Em issions inventory

reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives

Page 2**Source** Tons SO2



### Ac **id Plant Tailstack emissions** 1741 Em issions measured by CEM 

### Vent Fume Stack 410 Em issions measured by CEM 

### Ac **id Plant By pass Stack**  102 Em issions measured by CEM 

### Smelting Fugitives 2360 Em issions calculated by sulfur balanceEm issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives**Source** Tons SO2



### Ac **id Plant Tailstack emissions** 1612 Em issions measured by CEM 

### Vent Fume Stack 273 Em issions measured by CEM 

### Ac **id Plant By pass Stack**  144 Em issions measured by CEM 

### Smelting Fugitives 2659 Em issions calculated by sulfur balanceEm issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives**Source** Tons SO2



### Ac **id Plant Tailstack emissions** 1415 Em issions measured by CEM 

### Vent Fume Stack 331 Em issions measured by CEM. 

### Ac **id Plant By pass Stack**  93 Em issions measured by CEM 

### Smelting Fugitives 8473 Em issions calculated by sulfur balance; 8473 tons SO2Em issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives**Source** Tons SO2



### Ac **id Plant Tailstack emissions** 1204 Em issions measured by CEM 

### Vent Fume Stack 394 Em issions measured by CEM 

### Ac **id Plant By pass Stack**  59 Em issions measured by CEM 

### Smelting Fugitives 8460 Calculated by

ratio to 2010 concentrate throughput; 2010 throughput: 694647 tons; 2010 fug SO2: 8473 tons; 2011 throughput: 693595 tons; 2011 fug SO2 (calc): 8460 tons; Calculation: 8473*693595/694647 = 8460 tons 

### ISA **A ux Boiler**  0.004Em issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives + ISA Aux Boiler which is more conservative than using Sulfur Balance for fugitive sulfur reportingEm issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives + ISA Aux Boiler**Source** Tons SO2



### Ac **id Plant Tailstack emissions** 985 Em issions measured by CEM; 985 tons Em issions inventory reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives 

### Vent Fume Stack 510 which is more conservative than using Sulfur Balance for fugitive sulfur reporting Em issions measured by CEM; 510 tons. 

### Ac **id Plant By pass Stack**  71 Em issions measured by CEM; 71 tons. 

### Smelting Fugitives 8414 Calculated by

ratio to 2010 concentrate throughput; 2010 throughput: 694647 tons; 2010 fug SO2: 8473 tons; 2012 throughput: 689775 tons; 2011 fug SO2 (calc): 8414 tons; Calculation: 8473*689775/694647 = 8414 tons



### Smelting Fugitives - S Balance 73 If we use the sulfur balance calculation for year 2012, the fugitives are 73 tons SO2.Em issions inventory

reports Tailstack+Vent Fume Stack + Bypass Stack +Smelting Fugitives which is more conservative than using Sulfur Balance for fugitive sulfur reporting