From: Hulse, David G. [ mailto:David.Hulse@alcoa.com ]

Sent: Monday, September 23, 2013 4:19 PM

To: Body, Steve; Bray, Dave

Cc: Jones, James D.

Subject: FW: Wenatchee BART Test Data for USEPA Region 10

Steve and Dave

Here is the testing data that we gathered at your request. As you can see, 0.005 gr/dscf may not be the

appropriate PM limit to represent the performance capability of all of the baghouses at Wenatchee

Works. In some cases, a higher limit may be needed.

Please let me know if you have questions, or need more information.

Thanks,

David Hulse

Alcoa Inc.

– Wenatchee Works

Environmental Manager

From: Hulse, David G. [ mailto:David.Hulse@alcoa.com ]

Sent: Tuesday, August 20, 2013 3:48 PM

To: Hedgpeth, Zach; Body, Steve; Bray, Dave

Cc: Jones, James D.

Subject: RE: RE: request for PM and NOx test results

Hi Zach

The 43E is up for testing this year, but we have not set a date yet. I expect that it will be within 2

months.

The NOx factor that we use for the 62 bake furnace is 0.474 lbs NOx/Short Ton Green Anode Baked. (In

2012, there were roughly 47,000 Short Tons of anodes baked in furnace 6 2.)

The NOx factor that we use for potline 5 is 0.34 lbs NOx / Short Ton Aluminum. (In 2012, we produced

roughly 60,200 Short Tons of Aluminum in Line 5)

I don’t have any of the underlying data used to determine these factors.

I hope that this helps

– l et me know if you need anything else.

Dave

From: Hedgpeth, Zach [ mailto:Hedgpeth.Zach@epa.gov ]

Sent: Friday, August 16, 2013 11:45 AM

To: Hulse, David G.; Body, Steve; Bray, Dave

Cc: Jones, James D.

Subject : EXT: RE: request for PM and NOx test results

### Dave,

I appreciate the quick response. Yes, we would like to see the NOx emission factors

based on similar processes at other Alcoa facilities. If you have any of the

underlying data/calculations showing the derivation of those emission factors, that

would also be helpful.

Also, does the 2008 test mean that 43E will be tested this year (5

- year testing

frequency)? If so, could you let us know the schedule for the testi ng?

Thanks, and have a good weekend...

Zach Hedgpeth

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From: Hulse, David G. [ mailto:David.Hulse@alcoa.com ]

Sent: Friday, August 16, 2013 10:59 AM

To: Hedgpeth, Zach; Body, Steve; Bray, Dave

Cc: Jones, James D.

Subject: RE: request for PM and NOx test results

Hi Zach

We do have PM data for the 43E dust collector

– it is 0.00097 grains per dscf, last tested in

2008. We do not have NOx testing data for Potline 5, Bake furnace 62, or the A446 bake furnace

control device. We have not developed NOx emission factors specific to those units, but we do

have emissions factors from other Alcoa facilities with similar processes that we use to estimate

NOx emissions for the annual Emissions Inventory repor t. If those would be helpful let me know

and I will share them with you. You are correct in guessing that the 21M and 19C units have

never been tested for PM.

Dave

From: Hedgpeth, Zach [ mailto:Hedgpeth.Zach@ epa.gov ]

Sent: Thursday, August 15, 2013 7:03 AM

To: Hulse, David G.

Cc: Jones, James D.; Body, Steve; Bray, Dave

Subject: EXT: request for PM and NOx test results



### Dave,

As part of our BART

- related work, we are trying to gather emissions data

from the B ART

- eligible emission units/control devices at the Wenatchee

smelter. We’ve obtained some of the test results by reviewing Ecology’s files,

but have not been able to locate test results for the following

pollutants/emission units. Could you provide any o f the following emission

test results?

### Unit 43E

– PM

Potline 5

– NOx

Anode Bake Furnaces/A446

– NOx

With regard to NOx, we are also interested in whether the facility has

developed unit

- specific emission factors for Potline 5 and the Anode Bake

Furnaces.

Lastly, we expect that based on their small size, units 21M and 19C have

never been tested for PM emissions...can you confirm this is the case?

Feel free to give me a call with any questions...

Zach Hedgpeth, PE

Air Pollution Control Technology & Emission Testing

Office of Environmental Assessment

EPA Region 10

-- Seattle

hedgpeth.zach@epa.gov

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From: Hulse, David G. [ mailto:David.Hulse@alcoa.com ]

Sent: F riday, August 16, 2013 10:59 AM

To: Hedgpeth, Zach; Body, Steve; Bray, Dave

Cc: Jones, James D.

Subject: RE: request for PM and NOx test results

Hi Zach

We do have PM data for the 43E dust collector

– it is 0.00097 grains per dscf, last tested in 2008. We do

not have NOx testing data for Potline 5, Bake furnace 62, or the A446 bake furnace control device. We

have not developed NOx emission factors specific to those units, but we do have emissions factors from

other Alcoa facilities with similar processe s that we use to estimate NOx emissions for the annual

Emissions Inventory report. If those would be helpful let me know and I will share them with you. You

are correct in guessing that the 21M and 19C units have never been tested for PM.

Dave

From: He dgpeth, Zach [ mailto:Hedgpeth.Zach@epa.gov ]

Sent: Thursday, August 15, 2013 7:03 AM

To: Hulse, David G.

Cc: Jones, James D.; Body, Steve; Bray, Dave

Subject: EXT: request for PM and NOx test results



### Dave,

### As part of our BART

- related work, we are trying to gather emissions data from the

BART

- eligible emission units/control devices at the Wenatchee smelter. We’ve

obtained some of the test results by reviewing Ecology’s files, but have not been able

to locate test results for the following pollutants/emission units. Could you provide

any of the following emission test results?

Unit 43E

– PM

Potline 5

– NOx

Anode Bake Furnaces/A446

– NOx

With regard to NOx, we are also interested in whether the facility has developed

unit

- specific emission factors for Potline 5 and the Anode Bake Furnaces.

Lastly, we expect that based on their small size, units 21M and 19C have never been

tested for PM emissions...can you confirm this is the case?

Feel free to give me a call with any questions...

Zach Hedgpeth, PE

Air Pollution Control Technology & Emission Testing

Office of Environmental Assessment

EPA Region 10

-- Seattle

hedgpeth.zach@epa.gov

206

- 553

- 1217