To: Donnalee Jones/RTP/USEPA/US@EPA 

From: "Steve Wright" <swright@cfaluminum.com> 

Date: 02/29/2008 01:08PM 

cc: "Bob Strieter \(Bob Strieter\)" <BStriete@aluminum.org>, "Cathy Laughner 

\(CathyLaughner\)" <cathyl@bkbh.com> 

Subject: Columbia Falls Aluminum Company POM Data 

Dear Dr. Jones: 

In response to your December 19, 2007 email request, CFAC :stockticker has amended the “plant inputPOM :stockticker-data” spreadsheet and it is attached to this email. The attached spreadsheet file also 

includes a worksheet containing CFAC :stockticker’s POM (MCSO) data and a worksheet with CFAC ’s 

comments. 

Please call or email if you need additional information or explanation. 
Columbia Falls Aluminum Company (CFAC) Comments

2/29/2008

1. CFAC's facility is comprised of 5 potlines. CFAC has not 

operated all 5 potlines since 1999, due to economic 

1. CFAC's estimate of annual production is the 1997 annual 

production at five potline operation. 1996 production was 

2. Paste plant capacity is calculated assuming 24 hr/day, 7 

3. CFAC has no speciated POM emission data.

4. CFAC's methylene chloride soluble organic matter 

(MCSO) emission monitoring data is provided in the 

5. CFAC's paste plant is comprised of batch mixers.

6. CFAC's State of Montana regulated POM emission limits 

are the same as Federal MACT requirements

7. Northwest Aluminum and CFAC did not use the same 

coal tar pitch; therefore, Northwest Aluminum's speciated 

POM emissions may be different than Columbia Falls 

9/23/2009 Columbia Falls Aluminum Co-Input-POM-data changes 2 29 08.xls
EPA Data Request

2/29/2008

Columbia Falls Aluminum Company

Methylene Chloride Soluble Organic Matter (MCSO) Test Resultslb MCSO/ton aluminum values include both primary and secondary emissions

Calendar

Quarter Year Potline 1 Potline 2 Potline 3 Potline 4 Potline 5 Facilty Average

lb 

MCSO/ton 

lb MCSO/ton 

aluminum

lb MCSO/ton 

aluminum

lb MCSO/ton 

aluminum

lb MCSO/ton 

aluminum

lb MCSO/ton 

aluminum Comments

4 1999 Testing and analysis difficulties Testing and analytical issues continued; 

1 2000 2.8 2.1 2.8 4.1 2.6 2.9 Testing and analytical issues continued; 2 2000 2.2 3.1 3.8 3.2 3.3 3.1 Testing and analytical issues continued; 3 2000 4.7 2.7 4.5 4.8 5.1 4.5 Testing and analytical issues continued; 4 2000 5.1 no sample 2.8 3.6 3.2 3.6 Testing and analytical issues continued; 1 2001 shut down shut down shut down shut down shut down shut down Testing and analytical issues continued; 2 2001 shut down shut down shut down shut down shut down shut down Testing and analytical issues continued; 3 2001 shut down shut down shut down shut down shut down shut down Testing and analytical issues continued; 4 2001 shut down shut down shut down shut down shut down shut down Testing and analytical issues continued; 1 2002 shut down shut down shut down startup shut down n/a

2 2002 shut down shut down startup startup startup n/a3 2002 shut down shut down 2.7 2.7 1.8 2.4 Testing and analytical issues resolved

4 2002 shut down shut down 1.4 1.6 1.1 1.41 2003 shut down shut down 1.5 2.1 1.9 1.82 2003 shut down shut down shut down shut down 1.7 1.73 2003 shut down shut down shut down shut down 2.5 2.54 2003 shut down shut down shut down shut down 1.8 1.81 2004 shut down shut down shut down shut down 1.6 1.62 2004 shut down shut down shut down shut down 1.3 1.33 2004 shut down shut down shut down shut down 2.0 2.04 2004 shut down shut down shut down shut down 1.4 1.41 2005 shut down shut down shut down shut down 1.7 1.72 2005 shut down shut down shut down shut down 1.7 1.73 2005 shut down shut down shut down shut down 1.8 1.84 2005 shut down shut down shut down shut down 1.1 1.11 2006 shut down shut down shut down shut down 1.0 1.02 2006 shut down shut down shut down shut down 1.1 1.13 2006 shut down shut down shut down shut down 1.6 1.64 2006 shut down shut down shut down shut down 1.1 1.11 2007 shut down shut down startup startup 1.6 1.62 2007 shut down shut down 2.2 3.1 1.9 2.43 2007 shut down shut down 3.2 3.0 1.9 2.74 2007 shut down shut down 1.5 1.6 1.0 1.3

9/23/2009 Columbia Falls Aluminum C
Plant data

No.

Plant City State Type

2006 Capacity (thousands of metric tons)

Aluminum capacity (tons/yr)

Paste plant capacity (tons/yr)

Aluminum 

(tons/yr)

Percent utilization Year

14 Columbia Falls Aluminum Co Columbia Falls MT VSS 185 203,500 184,781 189,341 93.0% 1997 data

CAPACITIES ESTIMATE OF ACTUAL PRODU

9/23/2009 1 Columbia Falls Aluminum Co-Inp