1

From: "Mitchell, Kathryn M" <Kathryn.Mitchell@alcoa.com>

To: David Putney/RTP/USEPA/US@EPA

Cc: "Van Der Meyden, Henk"

<Henk.VanDerMeyden@alcoa.com>, "Hulse, David G."

<David.Hulse@alcoa.com>, "Bilskis, Patricia A."

<Patricia.Bilskis@alcoa.com>, "Pal azzolo, Michael

A." <Michael.Palazzolo@alcoa.com>

Date: 08 /12/2011 06:49 PM

Subject: RE: Controls on existing pitch storage tanks

Mr. Putney,

Below is the requested information from Intalco Aluminum

Corporation regarding the existing pitch storage tank controls

(refer to bold responses in red ). If you need any additional

informat ion, please don't hesitate to contact me.

Sincerely,

Kathryn Mitchell

Alcoa Intalco Works

Environmental Manager

4050 Mountainview Rd.

Ferndale, WA 98248

- 0937, USA

Hello all,

The responses to the recent (dated 04/25/11 I believe) ICR from

your primary aluminum reduction facilities (i.e., Alcoa

Wenatchee, Alumax of South Carolina, and Intalco Aluminum)

indicated that the existing pitch storage tanks at your

facilities are equipped with control devices. As part of the

ongoing residua l risk and technology review (RTR) project for

the primary aluminum reduction source category I am collecting

information on the costs associated with those controls.

Specifically, as a minimum, I need the following information for

these

controls:2

The year the controls were installed;

1995

The capital cost of the controls;

Fume capture and return system from tank

cars, condensing tank, carbon Bed: Approximately $100,000

The annual operating cost of the controls; and

Labor

- $2,000

Equipment

- $2,000

Filter media

- $2,000

Total

- $6,000

The estimated emissions reduction attributed to the controls.

Removal efficiency has not been tested, but is

estimated to be equal to or greater than 95%.

Please break down the annua l operating cost information to

indicate what portion is for labor versus materials (e.g.,

carbon).

Due to the tight schedule for this project please provide this

information by this Friday, 08/12/11. If this is not possible,

please contact me.

Thanks,

David Putney, Environmental Engineer

U.S. Environmental Protection Agency

Office of Air Quality Planning and Standards Sector Policies and

Programs Division

109 T.W. Alexander Drive, RTP, NC 27711

Mail Drop D243

- 02

Ph: (919) 541

- 2016 Fax: (919) 541

- 3207

E mail: putney.david@epa.gov

----- Original Message

----- From: Putney.David@epamail.epa.gov

[mailto:Putney.David@epamail.epa.gov]

Sent: Tuesday, August 09, 2011 6:25 AM

To: Van Der Meyden, Henk; Hulse, David G.; Bilskis, Patricia A.;

Mitchell, Kathryn M; Pa lazzolo, Michael A.

Subject: Controls on existing pitch storage tanks3

Hello all,

The responses to the recent (dated 04/25/11 I believe) ICR from

your primary aluminum reduction facilities (i.e., Alcoa

Wenatchee, Alumax of South Carolina, and Intalco Alu minum)

indicated that the existing pitch storage tanks at your

facilities are equipped with control devices. As part of the

ongoing residual risk and technology review (RTR) project for

the primary aluminum reduction source category I am collecting

informa tion on the costs associated with those controls.

Specifically, as a minimum, I need the following information for

these

controls:

The year the controls were installed;

The capital cost of the controls;

The annual operating cost of the controls; and

The estimated emissions reduction attributed to the controls.

Please break down the annual operating cost information to

indicate what portion is for labor versus materials (e.g.,

carbon).

Due to the tight schedul e for this project please provide this

information by this Friday, 08/12/11. If this is not possible,

please contact me.

Thanks,

David Putney, Environmental Engineer

U.S. Environmental Protection Agency

Office of Air Quality Planning and Standards Sector Policies and

Programs Division

109 T.W. Alexander Drive, RTP, NC 27711

Mail Drop D243

- 02

Ph: (919) 541

- 2016 Fax: (919) 541

- 3207

Email: putney.david@epa.gov