**DOE MONTHLY POTROOMS REPORT AL**  **COA WENA**  **TCHEE** 

### March 2011

**1. A verage aluminum production rate ( tons aluminum / day )**  **Al uminum**  **Al uminum**  **Production Production**  **lbs / day tons / day**  **Line 2 140,708**  **70**
**2. Particulate emission rate ( lbs / day, Concentration & A irflows)**  **Monitor**

**Control Device Roof Monitors**  **(Dry Scrubber) Monthly**  **Line Rolling avg**  **Av erage**  **Total Particulate lbs PM /day**  **lbs PM /day lbs PM /day**  **Line 2 83.5**  **646.5 730.1** 

**Line 2 Line 2**  **Control Device Control Device**  **(Dry Scrubber) (Dry Scrubber)**  **Rolling avg Rolling avg**  **mg/dscf dscf/min**  **1st Quarter 11 0.0650**  **404930 2nd Quarter 10**  **3rd Quarter 10 4th Quarter 10**  **Av erage**  **0.0650 404930** 

**Line 2 Line 2**  **Roof Monitors Roof Monitors**  **Monthly Monthly**  **Av erage**  **Av erage**  **mg/dscf dscf/min**  **Mar. 2011 0.0968**  **2103585 DOE MONTHLY POTROOMS REPORT**  **AL COA**  **WENA TCHEE**  

### March 2011

**3. A verage particulate emission to production ratio ( lbs / ton A** **l ) Line / Plant**  **Permit Limit Line / Plant**  **Line / Plant PM Emission to**  **PM Emission to Total Particulate**  **A L Production**  **Production Ratio Production Ratio**  **lbs per day tons / Day**  **lbs PM / Ton A l**  **lbs PM / ton AL Line 1**  **856.2 133.50**  **6.4 Line 2**  **730.1 70.35**  **10.4 Line 5**  **734.5 166.25**  **4.4 Plant Totals**  **2320.7 370.1**  **6.3 15.0** 

**4. A verage fluoride content of particulate emissions (percent)** 

**Line / Plant Line / Plant**  **Line / Plant Total Particulate**  **Total Fluoride**  **Fluoride Particulate**  **Particulate in lbs per day**  **lbs per day Percent**  **Line 2 67.0**  **730.06 9.2** 
**5. Gaseous fluoride roof vent emission rate (ug/m3)**

**Roof Monitor Roof Monitor**  **Daily Maximum Monthly A**  **verage ug GF/m3**  **ug GF/m3 Line 2**  **1062 659**  **6. A verage gaseous F emission rate (lbs F/day)** 

**Control Device (Dry Scrubber)**  **Rolling avg Roof Monitors**  **Opsis Monthly A** 

**vg. Line / Plant** 

**Gaseous Fluoride lbs GF / day**  **lbs GF /day lbs / day**  **Line 1 0.362**  **113.504 113.866**  **Line 2 1.433**  **113.040 114.473**  **Line 5 14.948**  **71.856 86.804**  **Plant Totals 315.1** **DOE MONTHLY POTROOMS REPORT AL**  **COA WENA**  **TCHEE** 

### March 2011

**7. A verage TF emission rate (lbs / ton aluminum)**  **Control Device (Dry Scrubber)**  **Rolling avg Potline Roof**  **Monitor Total by Line**  **Permit Limit lbs TF / ton**  **lbs TF / ton lbs TF / ton**  **lbs TF / ton Line 2**  **0.1797 2.3999**  **2.6 1.9** *** *** Line 2 was in startup and operated in compliance with W DOE Administrative Order Docket Number 8301 **8. A verage SO2 emission rate (lbs / ton aluminum)**  **Total by Line Permit Limit**  **Total by Line Permit Limit**  **lbs SO2 / ton lbs SO2 / ton**  **ton SO2 / Month Ton SO2 / Year** 
**Line 1 A pr. 10**  **37.7 46 lbs**  **76.0 Line 1 May 10**  **28.9 46 lbs**  **60.4 Line 1 Jun. 10**  **31.0 46 lbs**  **61.3 Line 1 Jul. 10**  **35.7 46 lbs**  **70.0 Line 1 A** **ug. 10 36.6**  **46 lbs 73.3**  **Line 1 Sept. 10 36.7**  **46 lbs 72.4**  **Line 1 Oct. 10 33.3**  **46 lbs 67.9**  **Line 1 Nov. 10 32.9**  **46 lbs 65.3**  **Line 1 Dec. 10 33.2**  **46 lbs 67.9**  **Line 1 Jan. 11 34.4**  **46 lbs 71.5**  **Line 1 Feb. 11 29.5**  **46 lbs 54.9**  **Line 1 Mar. 11 36.5**  **46 lbs 75.4**  **Line 2 A pr. 10**  **46 lbs Line 2 May 10**  **46 lbs Line 2 Jun. 10**  **46 lbs Line 2 Jul. 10**  **46 lbs Line 2 A** **ug. 10 46 lbs**  **Line 2 Sept. 10 46 lbs**  **Line 2 Oct. 10 46 lbs**  **Line 2 Nov. 10 46 lbs**  **Line 2 Dec. 10 46 lbs**  **Line 2 Jan. 11 46 lbs**  **Line 2 Feb. 11 46 lbs**  **Line 2 Mar. 11 36.5**  **46 lbs 28.2**  **Year Total Lines 1 & 2 844.68**  **2900 8. A**  **verage SO2 emission rate (lbs / ton aluminum) (continued) Plant Total**  **Permit Limit lbs SO2 / ton A** **l lbs SO2 / ton**  **Plant Mar. 2011 54.3**  **60 lbs**
**9. Sulfur dioxide mass limit (raw materials and sulfur analysis) Petroleum Coke(mt)**  **Percent Sulfur Coal Tar Pitch(mt)**  **Percent Sulfur Mar. 2011**  **5444 2.57**  **1346 0.59** **DOE MONTHLY POTROOMS REPORT AL**  **COA WENA**  **TCHEE** 

### March 2011 **10. Minimum pot cycle average air flow rate (A CFM)** 
**Minimum Flows (A CFM)**  **Control Device MACT Minimum**  **Line 2 311,393 A** **CFM 310,000 ACFM** 
**11. Minimum pot cycle average alumina flow rate (Minutes / Revolutions)**

**Minimum Minimum**  **Pot Cycle A**

**verage**

**Pot Cycle A**

**verage Ore Line 2**  **4,732 Minutes 189 Tons**  **3,110 Minutes 168.7 Tons** 

**AV ERA** **GE EMISSION RA TES WERE DETERMINED FROM SA** **MPLING FOLLOWING LOCA TIONS:** 

**FOUR QUA RTER**  **CONTROL DEVICE ROOF VENT**  **CONTROL DEVICE ROLLING A**  **VG. CEM DA** 

**TA EMISSION DA** 

**TA DA** 

**TE LA ST UNIT**  **FOR FLUORIDE ROOF VENT**  **DA TES ROOF**  **SUPPLIED FROM SA** **MPLED SUPPLIED FROM**  **SA MPLED**  **VENT SA MPLED**  **Line 2 Mar. 2, 2011**  **Line 2 LINE 2 RM 8 - OPSIS A** **ll Valid Potcycles**

**TOTA L POT DA** 

**YS OPERA**

**TED LINE 2**  **2,660**
**Certification by Responsible Official** "Based on information and belief formed after reasonable inquiry, the statements and information in this document are true, accurate and complete."

Date

Signature of Responsible Official**DOE MONTHLY POTROOMS REPORT AL**  **COA WENA**  **TCHEE** 

### April 2011

**1. A verage aluminum production rate ( tons aluminum / day )**  **Al uminum**  **Al uminum**  **Production Production**  **lbs / day tons / day**  **Line 2 191,467**  **96**
**2. Particulate emission rate ( lbs / day, Concentration & A irflows)**  **Monitor**

**Control Device Roof Monitors**  **(Dry Scrubber) Monthly**  **Line Rolling avg**  **Av erage**  **Total Particulate lbs PM /day**  **lbs PM /day lbs PM /day**  **Line 2 55.2**  **746.6 801.9** 

**Line 2 Line 2**  **Control Device Control Device**  **(Dry Scrubber) (Dry Scrubber)**  **Rolling avg Rolling avg**  **mg/dscf dscf/min**  **1st Quarter 11 0.0650**  **404930 2nd Quarter 11**  **0.0201 413235**  **3rd Quarter 10 4th Quarter 10**  **Av erage**  **0.0425 409083** 

**Line 2 Line 2**  **Roof Monitors Roof Monitors**  **Monthly Monthly**  **Av erage**  **Av erage**  **mg/dscf dscf/min**  **Ap ril 2011**  **0.0907 2593513** **DOE MONTHLY POTROOMS REPORT AL**  **COA WENA**  **TCHEE** 

### April 2011

**3. A verage particulate emission to production ratio ( lbs / ton A** **l ) Line / Plant**  **Permit Limit Line / Plant**  **Line / Plant PM Emission to**  **PM Emission to Total Particulate**  **A L Production**  **Production Ratio Production Ratio**  **lbs per day tons / Day**  **lbs PM / Ton A l**  **lbs PM / ton AL Line 1**  **811.8 129.07**  **6.3 Line 2**  **801.9 95.73**  **8.4 Line 5**  **930.8 163.61**  **5.7 Plant Totals**  **2544.5 388.4**  **6.6 15.0** 

**4. A verage fluoride content of particulate emissions (percent)** 

**Line / Plant Line / Plant**  **Line / Plant Total Particulate**  **Total Fluoride**  **Fluoride Particulate**  **Particulate in lbs per day**  **lbs per day Percent**  **Line 2 75.8**  **801.86 9.4** 
**5. Gaseous fluoride roof vent emission rate (ug/m3)**

**Roof Monitor Roof Monitor**  **Daily Maximum Monthly A**  **verage ug GF/m3**  **ug GF/m3 Line 2**  **789 472**  **6. A verage gaseous F emission rate (lbs F/day)** 

**Control Device (Dry Scrubber)**  **Rolling avg Roof Monitors**  **Opsis Monthly A** 

**vg. Line / Plant** 

**Gaseous Fluoride lbs GF / day**  **lbs GF /day lbs / day**  **Line 1 0.238**  **91.380 91.618**  **Line 2 0.844**  **104.788 105.632**  **Line 5 16.472**  **86.288 102.760**  **Plant Totals 300.0** **DOE MONTHLY POTROOMS REPORT AL**  **COA WENA**  **TCHEE** 

### April 2011

**7. A verage TF emission rate (lbs / ton aluminum)**  **Control Device (Dry Scrubber)**  **Rolling avg Potline Roof**  **Monitor Total by Line**  **Permit Limit lbs TF / ton**  **lbs TF / ton lbs TF / ton**  **lbs TF / ton Line 2**  **0.0760 1.8189**  **1.9 1.9** 

**8. A verage SO2 emission rate (lbs / ton aluminum)**  **Total by Line Permit Limit**  **Total by Line Permit Limit**  **lbs SO2 / ton lbs SO2 / ton**  **ton SO2 / Month Ton SO2 / Year**  **Line 1 May 10 28.9**  **46 lbs 60.4**  **Line 1 Jun. 10 31.0**  **46 lbs 61.3**  **Line 1 Jul. 10 35.7**  **46 lbs 70.0**  **Line 1 A ug. 10**  **36.6 46 lbs**  **73.3 Line 1 Sept. 10**  **36.7 46 lbs**  **72.4 Line 1 Oct. 10**  **33.3 46 lbs**  **67.9 Line 1 Nov. 10**  **32.9 46 lbs**  **65.3 Line 1 Dec. 10**  **33.2 46 lbs**  **67.9 Line 1 Jan. 11**  **34.4 46 lbs**  **71.5 Line 1 Feb. 11**  **29.5 46 lbs**  **54.9 Line 1 Mar. 11**  **36.5 46 lbs**  **75.4 Line 1 A** **pr. 11 31.7**  **46 lbs 61.4**  **Line 2 May 10 46 lbs**  **Line 2 Jun. 10 46 lbs**  **Line 2 Jul. 10 46 lbs**  **Line 2 A ug. 10**  **46 lbs Line 2 Sept. 10**  **46 lbs Line 2 Oct. 10**  **46 lbs Line 2 Nov. 10**  **46 lbs Line 2 Dec. 10**  **46 lbs Line 2 Jan. 11**  **46 lbs Line 2 Feb. 11**  **46 lbs Line 2 Mar. 11**  **36.5 46 lbs**  **28.2 Line 2 A** **pr. 11 31.7**  **46 lbs 45.6**  **Year Total Lines 1 & 2 875.61**  **2900 8. A**  **verage SO2 emission rate (lbs / ton aluminum) (continued) Plant Total**  **Permit Limit lbs SO2 / ton A** **l lbs SO2 / ton**  **Plant A pr. 2011**  **47.0 60 lbs** 
**9. Sulfur dioxide mass limit (raw materials and sulfur analysis) Petroleum Coke(mt)**  **Percent Sulfur Coal Tar Pitch(mt)**  **Percent Sulfur Ap**  **r. 2011 5307**  **2.49 1025**  **0.59 DOE MONTHLY POTROOMS REPORT**  **AL COA**  **WENA TCHEE**  

### April 2011 **10. Minimum pot cycle average air flow rate (A CFM)** 
**Minimum Flows (A CFM)**  **Control Device MACT Minimum**  **Line 2 340,672 A** **CFM 310,000 ACFM** 
**11. Minimum pot cycle average alumina flow rate (Minutes / Revolutions)**

**Minimum Minimum**  **Pot Cycle A**

**verage**

**Pot Cycle A**

**verage Ore Line 2**  **5,191 Minutes 208 Tons**  **3,110 Minutes 168.7 Tons** 

**AV ERA** **GE EMISSION RA TES WERE DETERMINED FROM SA** **MPLING FOLLOWING LOCA TIONS:** 

**FOUR QUA RTER**  **CONTROL DEVICE ROOF VENT**  **CONTROL DEVICE ROLLING A**  **VG. CEM DA** 

**TA EMISSION DA** 

**TA DA** 

**TE LA ST UNIT**  **FOR FLUORIDE ROOF VENT**  **DA TES ROOF**  **SUPPLIED FROM SA** **MPLED SUPPLIED FROM**  **SA MPLED**  **VENT SA MPLED**  **Line 2 Ap**  **r. 12, 2011 Line 2**  **LINE 2 RM 8 - OPSIS A ll Valid Potcycles** 

**TOTA L POT DA** 

**YS OPERA**

**TED LINE 2**  **3,452**
**Certification by Responsible Official** "Based on information and belief formed after reasonable inquiry, the statements and information in this document are true, accurate and complete."

Date

Signature of Responsible Official