March 12 , 2010

INVISTA S.à r.l



### . - Seaford Plant (INVISTA)

25876 DuPont Road Seaford, DE 19973

ATTENTION: Steven R. Kimpton

Plant Manager

SUBJECT: Cancel lation of Permits associated with Emission Units permanently shutdown

Dear Mr. Kimpton:

The Department accepts the cancellation request s dated December 31, 2009 and February 23, 2010 as formal notification to cancel all the permits identified in the Attachment below. The listed permits which allow for the operation of the emission units desc ribed i n the Attachment are hereby cancelled due to the permanent shutdown of the associated emission units located at 25876 DuPont Road, Seaford, Delaware

. Operation of these emission units after the date of this letter shall constitute a violation of 7 DE Admin.
Code 1100.

Please contact Phanuel C. K. Bediako, Ph.D. at (302) 739

- 9402 if you have any questions or concerns.

Sincerely,

Paul E. Foster, P.E. Program Manager Engineering & Compliance Branch

PEF:JLF:PCKB :sr f : \ pckb \ pckb10027.doc

pc: Dove r (Title V) File Joanna L. French, P.E. Phanuel C. K. Bediako, Ph.D. Jack Sipple
Frank Gao
John OuttenINVISTA

- Seaford Plant

March 12, 2010 Page 2

ATTACHMENT : LIST OF CANCELLED PERMITS

PERMIT NUMBER EQUIPMENT DESCRIPTIO N

APC

- 83/071

- OPERATION (Amendment 5)(NOx RACT) dated October 3, 2002 231 MMBTU/hr Combustion Engineering Boiler (EU 002)

APC

- 82/035

- OPERATION dated August 28, 1981 Coal Car Thawing Unit (EU 006)

APC

- 88/268

- OPERATION dated July 15, 1988 18 MMBTU/hr DOWTHERM Vaporizer (EU 011)

APC

- 88/270

- OPERATION dated July 15, 1988 18 MMBT U/hr DOWTHERM Vaporizer (EU 013)

APC

- 88/271

- OPERATION dated July 15, 1988 18 MMBTU/hr DOWTHERM Vaporizer (EU 014)

APC

- 88/272

- OPERATION dated July 15, 1988 18 MMBTU/hr DOWTHERM Vaporizer (EU 015)

APC

- 88/273

- OPERATION dated July 15, 1988 24 MMBTU/hr DO WTHERM Vaporizer (EU 016)

APC

- 88/274

- OPERATION dated July 15, 1988 46.4 MMBTU/hr DOWTHERM Vaporizer (EU 017)

APC

- 88/275

- OPERATION dated July 15, 1988 46.4 MMBTU/hr DOWTHERM Vaporizer (EU 018)

APC

- 80/1406

- OPERATION dated September 17, 1980 Lindberg Recl amation Unit (Electric) (EU 021)

APC

- 80/1407

- OPERATION dated September 17, 1980 Lindberg Reclamation Unit (Electric) (EU 022)

APC

- 80/1321

- OPERATION (Amendment 1) dated May 12, 1982 Reflux Recovery Column on CP Line III Continuous Polymeri zation Processes (EU 025A)

APC

- 82/1189

- OPERATION dated October 10, 1982 Two polymerizers and scrubbing machines No. 21 and No. 22 (EU 025A)

APC

- 2001/0302

- OPERATION dated April 5, 2004 North Scrubber System (EU 025B)

APC

- 2001/0303

- OPERATION dated April 5, 2004 South Scrubber System (EU 025B)

APC

- 2002/0741

- OPERATION dated April 5, 2004 Middle Scrubber System (EU 025B)

APC

- 94/0853

- CONSTRUCTION/OPERATION dated November 8, 1996 DOWTHERM Vent Condensers (EU 026)

APC

- 2005/0179

- CONSTRUCTION/OPERATION dated October 5, 2005 Four (4) Adipic Acid Vacuum Conveyance Systems (EU 036)

APC

- 2005/0180

- CONSTRUCTION/OPERATION dated October 5, 2005

APC

- 2005/0181

- CONSTRUCTION/OPERATION dated October 5, 2005

APC

- 2005/0182

- CONSTRUCTION/OPERATION dated October 5, 2005MEMORANDUM

TO: Paul E. Foster, P.E.

THROUGH: Joanna L. French, P.E.

FROM: Phanuel C. K. Bediako, Ph.D.

SUBJECT: Cancellation of P ermits

INVISTA

- Seaford Plant

DATE: March 2, 2010

BACKGROUN D INFORMATION:

The Department receiv ed a letter dated December 31, 2009 and a supplementary letter dated February 23, 2010 in which INVISTA requested an administrative amendment to the Title V permit. According to the letter, several operations have been permanently shut down as a r esult of the restructuring. The major thrust of this restructuring was the shutdown of all batch and continuous Nylon polymerization processes. Furthermore, Bulk Continuous Filament (BCF) spinning operations have been discontinued. One (231) MMBTU/hr Co mbustion Engineering coal

- fired boiler (Boiler No. 2) was permanently shut down as a result of the July 28, 2009 Consent Decree between the EPA, the Department of Justice, DNREC, and INVISTA.

The Company requested that the emission units which have been p ermanently shut down be deleted from the Title V permit and the associated 7 DE Admin. Code 1102 permits be cancelled. The Table identifie s all the permits which are to be cancelled.

LIST OF PERMITS TO B E CANCELLED

PERMIT NUMBER EQUIPMENT DESCRIPTION

A PC

- 83/071

- OPERATION (Amendment 5) (NOx RACT) dated October 3, 2002 231 MMBTU/hr Combustion Engineering Boiler (EU 002)

APC

- 82/035

- OPERATION dated August 28, 1981 Coal Car Thawing Unit (EU 006)

APC

- 88/268

- OPERATION dated July 15, 1988 18 MMBTU/hr DOWTHERM Vaporizer (EU 011)

APC

- 88/270

- OPERATION dated July 15, 1988 18 MMBTU/hr DOWTHERM Vaporizer (EU 013)

APC

- 88/271

- OPERATION dated July 15, 1988 18 MMBTU/hr DOWTHERM Vaporizer (EU 014)

APC

- 88/272

- OPERATION dated July 15, 1988 18 MMBTU/hr DOWTHERM Vapori zer (EU 015)

APC

- 88/273

- OPERATION dated July 15, 1988 24 MMBTU/hr DOWTHERM Vaporizer (EU 016)

APC

- 88/274

- OPERATION dated July 15, 1988 46.4 MMBTU/hr DOWTHERM Vaporizer (EU 017)

APC

- 88/275

- OPERATION dated July 15, 1988 46.4 MMBTU/hr DOWTHERM Vaporizer (EU 018)

APC

- 80/1406

- OPERATION dated September 17, 1980 Lindberg Reclamation Unit (Electric) (EU 021)

APC

- 80/1407

- OPERATION dated September 17, 1980 Lindberg Reclamation Unit (Electric) (EU 022)

APC

- 80/1321

- OPERATION (Amendment 1) dated May 12, 1982 Reflux Recovery Column on CP Line III Continuous Polymerization Processes (EU 025A)MEMORANDUM

INVISTA

- Seaford Plant
March 2, 2010 Page 2

LIST OF PERMITS TO B E CANCELLED

PERMIT NUMBER EQUIPMENT DESCRIPTION

APC

- 82/1189

- OPERATION dated October 10, 1982 Two polymerizers and scrubbing machines No. 21 and No. 22 (EU 025A)

APC

- 2001/0302

- OPERATION dated April 5, 2004 North Scrub ber System (EU 025B)

APC

- 2001/0303

- OPERATION dated April 5, 2004 South Scrubber System (EU 025B)

APC

- 2002/0741

- OPERATION dated April 5, 2004 Middle Scrubber System (EU 025B)

APC

- 94/0853

- CONSTRUCTION/OPERATION dated November 8, 1996 DOWTHERM Vent Condens ers (EU 026)

APC

- 2005/0179

- CONSTRUCTION/OPERATION dated October 5, 2005 Four (4) Adipic Acid Vacuum Conveyance Systems (EU 036)

APC

- 2005/0180

- CONSTRUCTION/OPERATION dated October 5, 2005

APC

- 2005/0181

- CONSTRUCTION/OPERATION dated October 5, 2005

APC

- 2005/0182

- CONSTRUCTION/OPERATION dated October 5, 2005

RECOMMENDATION :

I recommend that the permits identifi ed above be cancelled.

PEF:JLF:PCKB : sr f : \ pckb \ pckb10027.doc

pc: Dover (Title V) File Jack Sipple
Frank Gao

Karen Mattio

, P.E.

Dawn Minor
Joanna French , P.E.
John Outten