### Index of Attachments

1. Pascagoula PFOA RESULTS LTR 10- 2006 through 03 - 2008 1a. Pascagoula PFOA RESULTS LTR data supplement through 04- 2009 2. Fayetteville Biennial Report

– 2002 and 2003 3. Fayetteville Biennial Report

– 2004 and 2005 3a. CBI 3b. CBI 4. CBI 5. CBI 6. CBIATTACHMENT 1

June 27, 2008

Delivered by FedEx Mr. Toby Cook, PE Environmental Permits Division Mississippi Department of Environmental Quality P. O. Box 10385 Jackson, MS 39289-0385 RE: Telomer Alcohol Sampling Results October 2006 through April 2008 Dear Mr. Cook: Please find below First Chemical Corporation’s (FCC) PFOA results for our wastewater for the months of October 2006 through April 2008. In accordance with the Agreed Order No. 5195 06, reports were previously submitted to you by letter for October 2006 through October 2007 as results became available. Below is a compilation of all results to date. This information is provided to accompany First Chemical’s pretreatment renewal application. Yours truly, FIRST CHEMICAL CORPORATION James Freeman Operations and Maintenance Manager Cc: Curt Miller, Jackson County Utility AuthorityATTACHMENT 1

Mr. Toby Cook, PE -2 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 

### FCC DISCHARGE TO POTW Sample Collection Date Sample

Method Analytical

Lab FCC Composite

Discharge Volume (gal) PFOA

Concentration (ppb) Mass Discharged

to POTW (lbs) 10/20/2006 C omposite Exygen 339992 NQ 0.000015 (1) 10/21/2006 Composite Exygen 337009 ND 0.0000025 (2) 10/22/2006 Composite Exygen 293905 NQ 0.000015 (1) 10/23/2006 Composite Exygen 249455 NQ 0.000011 (1) 10/25/2006 Composite Exygen 136950 0.067 0.000077 11/01/20 06 Composite Exygen 216,360 0.26 .00047 11/09/2006 Composite Exygen 305,738 0.036 .00009 11/15/2006 Composite Exygen 267,178 NQ .00001 (1) 11/22/2006 Composite Exygen 240,625 NQ .00001 (1) 11/29/2006 Composite Exygen 238,780 NQ .00001 (1) 12/06/2006 C omposite Exygen 278,000 0.024 .00006 12/13/2006 Composite Exygen 315,505 NQ .00001 (1) 12/20/2006 Composite Exygen 264,462 NQ .00001 (1) 12/28/2006 Composite Exygen 91,167 .0094 .00001 01/06/2007 Composite Exygen 316,313 .0071 .00002 01/11/2007 Compo site Exygen 225,777 .045 .00008 01/17/2007 Composite Exygen 237,362 0.0067 .00001 01/24/2007 Composite Exygen 220,676 <LOQ .00001 (1) 01/31/2007 Composite Exygen 161,123 .0063 .00001 02/07/2007 Composite Exygen 274,119 <LOQ .00001 (1) 02/14/2007 Compos ite Exygen 310,379 <LOQ .00001 (1) 02/21/2007 Composite Exygen 271,244 0.24 .00054 03/01/2007 Composite Exygen 265,764 <LOQ 0.00001 (1) 03/07/2007 Composite Exygen 300,274 0.0059 0.00015 03/14/2007 Composite Exygen 293,770 0.01 0.000025 03/21/2007 Compo site Exygen 257,311 0.076 0.000163 03/28/2007 Composite Exygen 214,697 0.038 0.000068 04/04/2007 Composite Exygen 342,697 0.033 0.000094 04/12/2007 Composite Exygen 386,227 0.017 0.000055 04/18/2007 Composite Exygen 348,977 <LOQ 0.00001 (1) 04/25/2007 Composite Exygen 395,136 0.028 0.000092 05/02/2007 Composite Exygen 348,640 0.023 0.000067 05/09/2007 Composite Exygen 341,028 <LOQ 0.00001 (1) 05/16/2007 Composite Exygen 373,733 0.064 0.000199 05/24/2007 Composite Exygen 329.455 0.17 0.000466 05/30/2007 Composite Exygen 352,090 <LOQ 0.00001 (1) 06/06/2007 Composite Exygen 387,629 <LOQ 0.00001 (1) 06/14/2007 Composite Exygen 337,285 0.015 0.000042 06/20/2007 Composite Exygen 486,430 0.13 0.000526 06/27/2007 Composite Exygen 412,043 0.025 0.000086ATTACHMENT 1

Mr. Toby Cook, PE -3 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 Sample Collection Date Sample

Method Analytical

Lab FCC Composite

Discharge Volume (gal) PFOA

Concentratio n (ppb) Mass Discharged

to POTW (lbs) 07/06/2007 Composite Exygen 457,850 0.063 0.000241 07/14/2007 Composite Exygen 427,169 0.015 0.000053 07/20/2007 Composite Exygen 426,432 0.018 0.000564 07/27/2007 Composite Exygen 377,450 0.017 0.000053 08/01/200

7 Composite Exygen 379,222 0.031 0.000098 08/08/2007 Composite Exygen 363,245 0.026 0.000077 08/15/2007 Composite Exygen 353,258 0.014 0.000041 08/22/2007 Composite Exygen 250,620 0.019 0.000040 08/29/2007 Composite Exygen 379,500 0.019 0.000060 09/05/2007 Composite Exygen 452,122 0.033 0.000124 09/12/2007 Composite Exygen 370,030 0.017 0.000052 09/19/2007 Composite Exygen 319,690 0.020 0.000053 09/25/2007 Composite Exygen 250,620 0.023 0.000053 10/03/2007 Composite Exygen 159,529 0.023 0.000031 1 0/102007 Composite Exygen 325,300 NQ 0.00001 (1) 10/17/2007 Composite Exygen 355,695 NQ 0.00001 (1) 10/24/2007 Composite Exygen 443,442 0.026 0.000096 10/31/2007 Composite Exygen 122,621 0.017 0.000017 11/09/2007 Composite Exygen 313,400 NQ 0.00001 (1) 1 1/14/2007 Composite Exygen 326,761 0.017 0.000047 11/21/2007 Composite Exygen 322,575 NQ 0.00001 (1) 11/28/2007 Composite Exygen 281,757 0.018 0.000042 12/05/2007 Composite Exygen 152,250 0.026 0.000033 12/12/2007 Composite Exygen 219,413 0.016 0.000029 12/19/2007 Composite Exygen 126,358 0.021 0.000022 12/27/2007 Composite Exygen 386.,166 0.02 0.000064 01/02/2008 Composite Exygen 370,619 0.013 0.000040 01/18/2008 Composite Exygen 315,095 NQ 0.00001 (1) 02/06/2008 Composite Exygen 259,486 0.024 0.000052 02/20/2008 Composite Exygen 214,555 0.016 0.000029 03/12/2008 Composite Exygen 335,000 0.035 0.000104 03/26/2008 Composite Exygen 247,628 0.075 0.000155 

### Limit of Quantification (LOQ) = 0.009 ppb Limit of Detection (LOD) = 0.0018 ppb (1) Calculation assumes a concentration of 0.0054 ppb, which is the mid-point between the LOQ and the LOD. (2) Calculation assumes a concentration of 0.0009 ppb, which is one-half the LOD.ATTACHMENT 1

Mr. Toby Cook, PE -4 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 

### FCC In -House Analysis for Each Batch of Telomer Wastewater Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 10/03/2006 Grab FCC In- House NQ 50 10/20/2006 Grab FCC In- House NQ 50 10/21/2006 Grab FCC In- House NQ 50 10/22/2006 Grab FCC In- House NQ 50 10/22/2006 Grab FCC In- House NQ 50 10/25/2006 Grab FCC In- House NQ 50 10/30/2006 Grab FCC In- House NQ 50 10/30/2006 Grab FCC In- House NQ 50 11/03/2006 Grab FCC In- House NQ 50 11/13/2006 Grab FCC In- House NQ 50 11/14/2006 Grab FCC In- House NQ 50 11/15/2006 Grab FCC In- House NQ 50 11/16/2006 Grab FCC In- House NQ 50 11/17/2006 Grab FCC In- House NQ 50 11/18/2006 Grab F CC In- House NQ 50 11/19/2006 Grab FCC In- House NQ 50 11/20/2006 Grab FCC In- House NQ 50 11/24/2006 Grab FCC In- House NQ 50 11/25/2006 Grab FCC In- House NQ 50 11/26/2006 Grab FCC In- House NQ 50 12/1/2006 Grab FCC In- House NQ 50 12/4/2006 Grab FCC In- House NQ 50 12/6/2006 Grab FCC In- House NQ 50 12/7/2006 Grab FCC In- House NQ 50 12/9/2006 Grab FCC In- House NQ 50 12/10/2006 Grab FCC In- House NQ 50 12/12/2006 Grab FCC In- House NQ 50 12/13/2006 Grab FCC In- House NQ 50 12/14/2006 Grab FCC In- House NQ 50 12/18/2006 Grab FCC In- House NQ 50 12/23/2006 Grab FCC In- House NQ 50 12/26/2006 Grab FCC In- House NQ 50 12/28/2006 Grab FCC In- House NQ 50 12/30/2006 Grab FCC In- House NQ 50 12/31/2006 Grab FCC In- House NQ 50 1/1/2007 Grab FCC In- House NQ 50 1/3/2007 Grab FCC In- House NQ 50 1/6/2007 Grab FCC In- House NQ 50 1/16/2007 Grab FCC In- House NQ 50 1/22/2007 Grab FCC In- House NQ 50 1/24/2007 Grab FCC In- House NQ 50ATTACHMENT 1

Mr. Toby Cook, PE -5 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 1/26/2007 Grab FCC In- House NQ 50 1/29/2007 Grab FCC In- House NQ 50 1/30/2007 Grab FCC In- House NQ 50 1/31/2007 Grab FCC In- House NQ 50 2/2/2007 Grab FCC In- House NQ 50 2/3/2007 Grab FCC In- House NQ 50 2/5/2007 Grab FCC In- House NQ 50 2/20/2007 Grab FCC In- House NQ 50 2/23/2007 Grab FCC In- House NQ 50 2/26/2007 Grab FCC In- House NQ 50 2/27/2007 Grab FCC In- House NQ 50 3/19/2007 Grab FCC In- House NQ 50 3/20/2007 Grab FCC In- House NQ 50 3/21/2007 Grab FCC In- House NQ 50 3/22/2007 Grab FCC In- House NQ 50 3/23/2007 Grab FCC In- House NQ 50 3/25/2007 Grab FCC In- House NQ 50 3/26/2007 Grab FCC In- House NQ 50 3/27/2007 Grab FCC In- House NQ 50 3/29/2007 Grab FCC In- House NQ 50 3/30/2007 Grab FCC In- House NQ 50 3/31/2007 Grab FCC In- House NQ 50 4/01/2007 Grab FCC In- House NQ 50 4/02/2007 Grab FCC In- House NQ 50 4/04/2007 Grab FCC In- House NQ 50 4/05/2007 Grab FCC In- House NQ 50 4/06/2007 Grab FCC In- House NQ 50 4/07/2007 Grab FCC In- House NQ 50 4/09/2007 Grab FCC In- House NQ 50 4/10/2007 Grab FCC In- House NQ 50 4/11/2007 Grab FCC In- House NQ 50 4/12/2007 Grab FCC In- House NQ 50 4/13/2007 Grab FCC In- House NQ 50 4/14/2007 Grab FCC In- House NQ 50 4/15/2007 Grab FCC In- House NQ 50 4/16/2007 Grab FCC In- House NQ 50 4/18/2007 Grab FCC In- House NQ 50 4/19/2007 Grab FCC In- House NQ 50 4/20/2007 Grab FCC In- House NQ 50 4/21/2007 Grab FCC In- House NQ 50 4/22/2007 Grab FCC In- House NQ 50 4/25/2007 Grab FCC In- House NQ 50 4/27/2007 Grab FCC In- House NQ 50 4/28/2007 Grab FCC In- House NQ 50ATTACHMENT 1

Mr. Toby Cook, PE -6 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 5/11/2007 Grab FCC In- House NQ 50 5/1 5/2007 Grab FCC In- House NQ 50 5/19/2007 Grab FCC In- House NQ 50 5/20/2007 Grab FCC In- House NQ 50 5/23/2007 Grab FCC In- House NQ 50 5/28/2007 Grab FCC In- House NQ 50 5/29/2007 Grab FCC In- House NQ 50 6/01/2007 Grab FCC In- House NQ 50 6/03/2007 Grab FCC In- House NQ 50 6/04/2007 Grab FCC In- House NQ 50 6/10/2007 Grab FCC In- House NQ 50 6/12/2007 Grab FCC In- House NQ 50 6/16/2007 Grab FCC In- House NQ 50 6/19/2007 Grab FCC In- House NQ 50 6/21/2007 Grab FCC In- House NQ 50 6/23/2007 Grab FCC In- House NQ 50 6/25/2007 Grab FCC In- House NQ 50 6/30/2007 Grab FCC In- House NQ 50 7/04/2007 Grab FCC In- House NQ 50 7/06/2007 Grab FCC In- House NQ 50 7/11/2007 Grab FCC In- House NQ 50 7/14/2007 Grab FCC In- House NQ 50 7/16/2007 Grab FCC In- House NQ 50 7/17/2007 Grab FCC In- House NQ 50 7/23/2007 Grab FCC In- House NQ 50 7/27/2007 Grab FCC In- House NQ 50 7/29/2007 Grab FCC In- House NQ 50 7/31/2007 Grab FCC In- House NQ 50 8/03/2007 Grab FCC In- House NQ 50 8/06/2007 Grab FCC In- House NQ 50 8/08/2007 Grab FCC In- House NQ 50 8/09/2007 Grab FCC In- House NQ 50 8/12/2007 Grab FCC In- House NQ 50 8/15/2007 Grab FCC In- House NQ 50 8/18/2007 Grab FCC In- House NQ 50 8/21/2007 Grab FCC In- House NQ 50 8/24/2007 Grab FCC In- House NQ 50 8/27/2007 Grab FCC In- House NQ 50 8/29/2007 Grab FCC In- House NQ 50 8/31/2007 Grab FCC In- House NQ 50 9/01/2007 Grab FCC In- House NQ 50 9/02/2007 Grab FCC In- House NQ 50 9/04/2007 Grab FCC In- House NQ 50ATTACHMENT 1

Mr. Toby Cook, PE -7 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 9/05/2007 Grab FCC In- Ho use NQ 50 9/07/2007 Grab FCC In- House NQ 50 9/09/2007 Grab FCC In- House NQ 50 9/12/2007 Grab FCC In- House NQ 50 9/15/2007 Grab FCC In- House NQ 50 9/18/2007 Grab FCC In- House NQ 50 9/20/2007 Grab FCC In- House NQ 50 9/23/2007 Grab FCC In- House NQ 50 9/25/2007 Grab FCC In- House NQ 50 9/26/2007 Grab FCC In- House NQ 50 9/28/2007 Grab FCC In- House NQ 50 9/30/2007 Grab FCC In- House NQ 50 10/01/2007 Grab FCC In- House NQ 50 10/03/2007 Grab FCC In- House NQ 50 10/05/2007 Grab FCC In- House NQ 50 10/06/2007 Grab FCC In- House NQ 50 10/08/2007 Grab FCC In- House NQ 50 10/12/2007 Grab FCC In- House NQ 50 10/19/2007 Grab FCC In- House NQ 50 10/20/2007 Grab FCC In- House NQ 50 10/21/2007 Grab FCC In- House NQ 50 10/22/2007 Grab FCC In- House NQ 50 10/24/2007 Grab FCC In- House NQ 50 10/25/2007 Grab FCC In- House NQ 50 10/26/2007 Grab FCC In- House NQ 50 10/27/2007 Grab FCC In- House NQ 50 10/28/2007 Grab FCC In- House NQ 50 10/29/2007 Grab FCC In- House NQ 50 10/31/2007 Grab FCC In- House NQ 50 11/01/2007 Grab FCC In- House NQ 50 11/02/2007 Grab FCC In- House NQ 50 11/04/2007 Grab FCC In- House NQ 50 11/10/2007 Grab FCC In- House NQ 50 11/12/2007 Grab FCC In- House NQ 50 11/17/2007 Grab FCC In- House NQ 50 11/26/2007 Grab FCC In- House NQ 50 11/27/2007 Grab FCC In- House NQ 50 11/29/2007 Grab FCC In- House NQ 50 11/30/2007 Grab FCC In- House NQ 50 12/02/2007 Grab FCC In- House NQ 50 12/03/2007 Grab FCC In- House NQ 50 12/05/2007 Grab FCC In- House NQ 50 12/07/2007 Grab FC C In- House NQ 50ATTACHMENT 1

Mr. Toby Cook, PE - 8 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 12/13/2007 Grab FCC In- House NQ 50 12/17/2007 Grab FCC In- House NQ 50 12/20/2007 Grab FCC In- House NQ 50 12/21/2007 Grab FCC In- House NQ 50 12/22/2007 Grab FCC In- House NQ 50 12/24/2007 Grab FCC In- House NQ 50 12/29/2007 Grab FCC In- House NQ 50 12/30/2007 Grab FCC In- House NQ 50 12/31/2007 Grab FCC In- House NQ 50 1/01/2008 Grab FCC In- House NQ 50 1/02/2008 Grab FCC In- House NQ 50 1/04/2008 Grab FCC In- House NQ 50 1/07/2008 Grab FCC In- House NQ 50 1/10/2008 Gra

b FCC In- House NQ 50 1/14/2008 Grab FCC In- House NQ 50 1/15/2008 Grab FCC In- House NQ 50 1/17/2008 Grab FCC In- House NQ 50 1/18/2008 Grab FCC In- House NQ 50 1/20/2008 Grab FCC In- House NQ 50 1/22/2008 Grab FCC In- House NQ 50 1/24/2008 Grab FC C In- House NQ 50 1/26/2008 Grab FCC In- House NQ 50 1/27/2008 Grab FCC In- House NQ 50 1/28/2008 Grab FCC In- House NQ 50 1/29/2008 Grab FCC In- House NQ 50 1/30/2008 Grab FCC In- House NQ 50 2/01/2008 Grab FCC In- House NQ 50 2/02/2008 Grab FCC In- House NQ 50 2/03/2008 Grab FCC In- House NQ 50 2/04/2008 Grab FCC In- House NQ 50 2/06/2008 Grab FCC In- House NQ 50 2/07/2008 Grab FCC In- House NQ 50 2/08/2008 Grab FCC In- House NQ 50 2/09/2008 Grab FCC In- House NQ 50 2/11/2008 Grab FCC In- Hou se NQ 50 2/13/2008 Grab FCC In- House NQ 50 2/15/2008 Grab FCC In- House NQ 50 2/16/2008 Grab FCC In- House NQ 50 2/17/2008 Grab FCC In- House NQ 50 2/19/2008 Grab FCC In- House NQ 50 2/20/2008 Grab FCC In- House NQ 50 2/21/2008 Grab FCC In- House NQ 50 2/23/2008 Grab FCC In- House NQ 50ATTACHMENT 1

Mr. Toby Cook, PE -9 - Environmental Permits Division Mississippi Department of Environmental Quality June 27, 2008 Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 2/26/2008 Grab FCC In- House NQ 50 2/28/2008 Grab FCC In- House NQ 50 2/29/2008 Grab FCC In- House NQ 50 3/02/2008 Grab FCC In- House NQ 50 3/04/2008 Grab FCC In- House NQ 50 3/06/2008 Grab FCC In- House NQ 50 3/07/2008 Grab FCC In- House NQ 50 3/09/2008 Grab FCC In- House NQ 50 3/11/2008 Grab FCC In- House NQ 50 3/12/2008 Grab FCC In- House NQ 50 3/14/2008 Grab FCC In- House NQ 50 3/15/2008 Grab FCC In- House NQ 50 3/17/2008 Grab FCC In- House NQ 50 3/20/2008 Grab FCC In- House NQ 50 3/21/2008 Grab FCC In- House NQ 50 3/24/2008 Grab FCC In- House NQ 50 3/25/2008 Grab FCC In- House NQ 50 3/29/2008 Grab FCC In- House NQ 50 3/30/2008 Grab FCC In- House NQ 50ATTACHMENT 1A



### FCC DISCHARGE TO POTW Sample Collection Date Sample

Method Analytical

Lab FCC Composite

Discharge Volume (gal) PFOA

Concentration (ppb) Mass Discharged

to POTW (lbs) 10/20/2006 Composite Exygen 339992 NQ 0.000015 (1) 10/21/2006 Composite Exygen 3370 09 ND 0.0000025 (2) 10/22/2006 Composite Exygen 293905 NQ 0.000015 (1) 10/23/2006 Composite Exygen 249455 NQ 0.000011 (1) 10/25/2006 Composite Exygen 136950 0.067 0.000077 11/01/2006 Composite Exygen 216,360 0.26 .00047 11/09/2006 Composite Exygen 305 ,738 0.036 .00009 11/15/2006 Composite Exygen 267,178 NQ .00001 (1) 11/22/2006 Composite Exygen 240,625 NQ .00001 (1) 11/29/2006 Composite Exygen 238,780 NQ .00001 (1) 12/06/2006 Composite Exygen 278,000 0.024 .00006 12/13/2006 Composite Exygen 315,50 5 NQ .00001 (1) 12/20/2006 Composite Exygen 264,462 NQ .00001 (1) 12/28/2006 Composite Exygen 91,167 .0094 .00001 01/06/2007 Composite Exygen 316,313 .0071 .00002 01/11/2007 Composite Exygen 225,777 .045 .00008 01/17/2007 Composite Exygen 237,362 0.0067 .00001 01/24/2007 Composite Exygen 220,676 <LOQ .00001 (1) 01/31/2007 Composite Exygen 161,123 .0063 .00001 02/07/2007 Composite Exygen 274,119 <LOQ .00001 (1) 02/14/2007 Composite Exygen 310,379 <LOQ .00001 (1) 02/21/2007 Composite Exygen 271,244 0 .24 .00054 03/01/2007 Composite Exygen 265,764 <LOQ 0.00001 (1) 03/07/2007 Composite Exygen 300,274 0.0059 0.00015 03/14/2007 Composite Exygen 293,770 0.01 0.000025 03/21/2007 Composite Exygen 257,311 0.076 0.000163 03/28/2007 Composite Exygen 214,697 0.038 0.000068 04/04/2007 Composite Exygen 342,697 0.033 0.000094 04/12/2007 Composite Exygen 386,227 0.017 0.000055 04/18/2007 Composite Exygen 348,977 <LOQ 0.00001 (1) 04/25/2007 Composite Exygen 395,136 0.028 0.000092 05/02/2007 Composite Exygen 348 ,640 0.023 0.000067 05/09/2007 Composite Exygen 341,028 <LOQ 0.00001 (1) 05/16/2007 Composite Exygen 373,733 0.064 0.000199 05/24/2007 Composite Exygen 329.455 0.17 0.000466 05/30/2007 Composite Exygen 352,090 <LOQ 0.00001 (1) 06/06/2007 Composite Exygen 387,629 <LOQ 0.00001 (1) 06/14/2007 Composite Exygen 337,285 0.015 0.000042 06/20/2007 Composite Exygen 486,430 0.13 0.000526 06/27/2007 Composite Exygen 412,043 0.025 0.000086 07/06/2007 Composite Exygen 457,850 0.063 0.000241 07/14/2007 Composite Exygen 427,169 0.015 0.000053 07/20/2007 Composite Exygen 426,432 0.018 0.000564 07/27/2007 Composite Exygen 377,450 0.017 0.000053Sample Collection Date Sample

Method Analytical

Lab FCC Composite

Discharge Volume (gal) PFOA

Concentration (ppb) Mass Discharged

to POTW (lbs) 08/01/2007 Composite Exygen 379,222 0.031 0.000098 08/08/2007 Composite Exygen 363,245 0.026 0.000077 08/15/2007 Composite Exygen 353,258 0.014 0.000041 08/22/2007 Composite Exygen 250,620 0.019 0.000040 08/29/2007 Composite Exygen 379,500 0.019 0.000060 09/05/2007 Composite Exygen 452,122 0.033 0.000124 09/12/2007 Composite Exygen 370,030 0.017 0.000052 09/19/2007 Composite Exygen 319,690 0.020 0.000053 09/25/2007 Composite Exygen 250,620 0.023 0.000053 10/03/2007 Composi te Exygen 159,529 0.023 0.000031 10/102007 Composite Exygen 325,300 NQ 0.00001 (1) 10/17/2007 Composite Exygen 355,695 NQ 0.00001 (1) 10/24/2007 Composite Exygen 443,442 0.026 0.000096 10/31/2007 Composite Exygen 122,621 0.017 0.000017 11/09/2007 Compos ite Exygen 313,400 NQ 0.00001 (1) 11/14/2007 Composite Exygen 326,761 0.017 0.000047 11/21/2007 Composite Exygen 322,575 NQ 0.00001 (1) 11/28/2007 Composite Exygen 281,757 0.018 0.000042 12/05/2007 Composite Exygen 152,250 0.026 0.000033 12/12/2007 Comp osite Exygen 219,413 0.016 0.000029 12/19/2007 Composite Exygen 126,358 0.021 0.000022 12/27/2007 Composite Exygen 386.,166 0.02 0.000064 01/02/2008 Composite Exygen 370,619 0.013 0.000040 01/18/2008 Composite Exygen 315,095 NQ 0.00001 (1) 02/06/2008 C omposite Exygen 259,486 0.024 0.000052 02/20/2008 Composite Exygen 214,555 0.016 0.000029 03/12/2008 Composite Exygen 335,000 0.035 0.000104 03/26/2008 Composite Exygen 247,628 0.075 0.000155 04/23/2008 Composite Exygen 145,703 0.033 0.000040 05/07/20 08 Composite Exygen 267,640 0.017 0.000038 05/21/2008 Composite Exygen 244,126 0.036 0.000073 06/04/2008 Composite Exygen 216,424 0.036 0.000065 07/09/2008 Composite Exygen 373,273 0.048 0.000149 08/20/2008 Composite Exygen 396,086 0.028 0..000092 09/ 04/2008 Composite Exygen 256,390 0.026 0.000056 09/17/2008 Composite Exygen 276,276 0.022 0.000051 10/08/2008 Composite Exygen 418,916 0.014 0.000049 12/10/2008 Composite Exygen 158,991 NQ 0.00001 (1) 12/23/2008 Composite Exygen 203,710 0.019 0.000032 01/07/2009 Composite Exygen 124,521 NQ 0.00001 (1) * Composite Exygen 

### * No Exygen results to date beyond 1/07/2009 Limit of Quantification (LOQ) = 0.009 ppb Limit of Detection (LOD) = 0.0018 ppb (3) Calculation assumes a concentration of 0.0054 ppb, whic h is the mid -point between the LOQ and the LOD. (4) Calculation assumes a concentration of 0.0009 ppb, which is one-half the LOD. ATTACHMENT 1AATTACHMENT 1A



### FCC In -House Analysis for Each Batch of Telomer Wastewater Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 10/03/2006 Grab FCC In- House NQ 50 10/20/2006 Grab FCC In- House NQ 50 10/21/2006 Grab FCC In- House NQ 50 10/22/2006 Grab FCC In- House NQ 50 10/22/2006 Grab FCC In- House NQ 50 10/25/2006 Grab FCC In- House NQ 50 10/30/2006 Grab FCC In- House NQ 50 10/30/2006 Grab FCC In- House NQ 50 11/03/2006 Grab FCC In- House NQ 50 11/13/2006 Grab FCC In- House NQ 50 11/14/2006 Grab FCC In- House NQ 50 11/15/2006 Grab FCC In- Hou se NQ 50 11/16/2006 Grab FCC In- House NQ 50 11/17/2006 Grab FCC In- House NQ 50 11/18/2006 Grab FCC In- House NQ 50 11/19/2006 Grab FCC In- House NQ 50 11/20/2006 Grab FCC In- House NQ 50 11/24/2006 Grab FCC In- House NQ 50 11/25/2006 Grab FCC In- House NQ 50 11/26/2006 Grab FCC In- House NQ 50 12/1/2006 Grab FCC In- House NQ 50 12/4/2006 Grab FCC In- House NQ 50 12/6/2006 Grab FCC In- House NQ 50 12/7/2006 Grab FCC In- House NQ 50 12/9/2006 Grab FCC In- House NQ 50 12/10/2006 Grab FCC In- House NQ 50 12/12/2006 Grab FCC In- House NQ 50 12/13/2006 Grab FCC In- House NQ 50 12/14/2006 Grab FCC In- House NQ 50 12/18/2006 Grab FCC In- House NQ 50 12/23/2006 Grab FCC In- House NQ 50 12/26/2006 Grab FCC In- House NQ 50 12/28/2006 Grab FCC In- House NQ 5 0 12/30/2006 Grab FCC In- House NQ 50 12/31/2006 Grab FCC In- House NQ 50 1/1/2007 Grab FCC In- House NQ 50 1/3/2007 Grab FCC In- House NQ 50 1/6/2007 Grab FCC In- House NQ 50 1/16/2007 Grab FCC In- House NQ 50 1/22/2007 Grab FCC In- House NQ 50 1/24 /2007 Grab FCC In- House NQ 50ATTACHMENT 1A Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 1/26/2007 Grab FCC In- House NQ 50 1/29/2007 Grab FCC In- House NQ 50 1/30 /2007 Grab FCC In- House NQ 50 1/31/2007 Grab FCC In- House NQ 50 2/2/2007 Grab FCC In- House NQ 50 2/3/2007 Grab FCC In- House NQ 50 2/5/2007 Grab FCC In- House NQ 50 2/20/2007 Grab FCC In- House NQ 50 2/23/2007 Grab FCC In- House NQ 50 2/26/2007 Gra

b FCC In- House NQ 50 2/27/2007 Grab FCC In- House NQ 50 3/19/2007 Grab FCC In- House NQ 50 3/20/2007 Grab FCC In- House NQ 50 3/21/2007 Grab FCC In- House NQ 50 3/22/2007 Grab FCC In- House NQ 50 3/23/2007 Grab FCC In- House NQ 50 3/25/2007 Grab FCC In- House NQ 50 3/26/2007 Grab FCC In- House NQ 50 3/27/2007 Grab FCC In- House NQ 50 3/29/2007 Grab FCC In- House NQ 50 3/30/2007 Grab FCC In- House NQ 50 3/31/2007 Grab FCC In- House NQ 50 4/01/2007 Grab FCC In- House NQ 50 4/02/2007 Grab FCC In- House NQ 50 4/04/2007 Grab FCC In- House NQ 50 4/05/2007 Grab FCC In- House NQ 50 4/06/2007 Grab FCC In- House NQ 50 4/07/2007 Grab FCC In- House NQ 50 4/09/2007 Grab FCC In- House NQ 50 4/10/2007 Grab FCC In- House NQ 50 4/11/2007 Grab FCC In- House NQ 50 4/12/2007 Grab FCC In- House NQ 50 4/13/2007 Grab FCC In- House NQ 50 4/14/2007 Grab FCC In- House NQ 50 4/15/2007 Grab FCC In- House NQ 50 4/16/2007 Grab FCC In- House NQ 50 4/18/2007 Grab FCC In- House NQ 50 4/19/2007 Grab FCC In- House NQ 50 4/20 /2007 Grab FCC In- House NQ 50 4/21/2007 Grab FCC In- House NQ 50 4/22/2007 Grab FCC In- House NQ 50 4/25/2007 Grab FCC In- House NQ 50 4/27/2007 Grab FCC In- House NQ 50 4/28/2007 Grab FCC In- House NQ 50ATTACHMENT 1A Sample Col lection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 5/11/2007 Grab FCC In- House NQ 50 5/15/2007 Grab FCC In- House NQ 50 5/19/2007 Grab FCC In- House NQ 50 5/20/2007 Grab FCC In- House NQ 50 5/23/2007 Grab FCC In- House NQ 50 5/28/2007 Grab FCC In- House NQ 50 5/29/2007 Grab FCC In- House NQ 50 6/01/2007 Grab FCC In- House NQ 50 6/03/2007 Grab FCC In- House NQ 50 6/04/2007 Grab FCC In- House NQ 50 6/10/2007 Grab FCC In- House NQ 50 6/12/2007 Grab FCC In- House NQ 50 6/16/2007 Grab FCC In- House NQ 50 6/19/2007 Grab FCC In- House NQ 50 6/21/2007 Grab FCC In- House NQ 50 6/23/2007 Grab FCC In- House NQ 50 6/25/2007 Grab FCC In- House NQ 50 6/30/2007 Grab FCC In- House NQ 50 7/04/2007 Grab FCC In- House NQ 50 7/06/2007 Grab FCC In- House NQ 50 7/11/2007 Grab FCC In- House NQ 50 7/14/2007 Grab FCC In- House NQ 50 7/16/2007 Grab FCC In- House NQ 50 7/17/2007 Grab FCC In- House NQ 50 7/23/2007 Grab FCC In- House NQ 50 7/27/2007 Grab FCC In- House NQ 50 7/29/2007 Grab FCC In- House NQ 50 7/31/2007 Grab FCC In- House NQ 50 8/03/2007 Grab FCC In- House NQ 50 8/06/2007 Grab FCC In- House NQ 50 8/08/2007 Grab FCC In- House NQ 50 8/09/2007 Grab FCC In- House NQ 50 8/12/2007 Grab FCC In- House NQ 50 8/15/2007 Grab FCC In- House NQ 50 8/18/2007 Grab FCC In- House NQ 50 8/21/2007 Grab FCC In- House NQ 50 8/24/2007 Grab FCC In- House NQ 50 8/27/2007 Grab FCC In- House NQ 50 8/29/2007 Grab FCC In- House NQ 50 8/31/2007 Grab FCC In- House NQ 50 9/01/2007 Grab FCC In- House NQ 50 9/02/2007 Grab FCC In- House NQ 50 9/04/2007 Grab FCC In- House NQ 50ATTACHMENT 1A Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 9/05/2007 Grab FCC In- House NQ 50 9/07/2007 Grab FCC In- House NQ 50 9/09/2007 Grab FCC In- House NQ 50 9/12/2007 Grab FCC In- House NQ 50 9/15/2007 Grab FCC In- House NQ 50 9/18/2007 Grab FCC In- House NQ 50 9/20/2007 Grab FCC In- House NQ 50 9/23/2007 Grab F CC In- House NQ 50 9/25/2007 Grab FCC In- House NQ 50 9/26/2007 Grab FCC In- House NQ 50 9/28/2007 Grab FCC In- House NQ 50 9/30/2007 Grab FCC In- House NQ 50 10/01/2007 Grab FCC In- House NQ 50 10/03/2007 Grab FCC In- House NQ 50 10/05/2007 Grab FC C In- House NQ 50 10/06/2007 Grab FCC In- House NQ 50 10/08/2007 Grab FCC In- House NQ 50 10/12/2007 Grab FCC In- House NQ 50 10/19/2007 Grab FCC In- House NQ 50 10/20/2007 Grab FCC In- House NQ 50 10/21/2007 Grab FCC In- House NQ 50 10/22/2007 Grab FCC In- House NQ 50 10/24/2007 Grab FCC In- House NQ 50 10/25/2007 Grab FCC In- House NQ 50 10/26/2007 Grab FCC In- House NQ 50 10/27/2007 Grab FCC In- House NQ 50 10/28/2007 Grab FCC In- House NQ 50 10/29/2007 Grab FCC In- House NQ 50 10/31/2007 Grab FCC In- House NQ 50 11/01/2007 Grab FCC In- House NQ 50 11/02/2007 Grab FCC In- House NQ 50 11/04/2007 Grab FCC In- House NQ 50 11/10/2007 Grab FCC In- House NQ 50 11/12/2007 Grab FCC In- House NQ 50 11/17/2007 Grab FCC In- House NQ 50 11/26/200 7 Grab FCC In- House NQ 50 11/27/2007 Grab FCC In- House NQ 50 11/29/2007 Grab FCC In- House NQ 50 11/30/2007 Grab FCC In- House NQ 50 12/02/2007 Grab FCC In- House NQ 50 12/03/2007 Grab FCC In- House NQ 50 12/05/2007 Grab FCC In- House NQ 50 12/07/2007 Grab FCC In- House NQ 50ATTACHMENT 1A Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 12/13/2007 Grab FCC In- House NQ 50 12/17/2007 Grab FCC In- House NQ 50 12/20/2007 Grab F CC In- House NQ 50 12/21/2007 Grab FCC In- House NQ 50 12/22/2007 Grab FCC In- House NQ 50 12/24/2007 Grab FCC In- House NQ 50 12/29/2007 Grab FCC In- House NQ 50 12/30/2007 Grab FCC In- House NQ 50 12/31/2007 Grab FCC In- House NQ 50 1/01/2008 Grab FCC In- House NQ 50 1/02/2008 Grab FCC In- House NQ 50 1/04/2008 Grab FCC In- House NQ 50 1/07/2008 Grab FCC In- House NQ 50 1/10/2008 Grab FCC In- House NQ 50 1/14/2008 Grab FCC In- House NQ 50 1/15/2008 Grab FCC In- House NQ 50 1/17/2008 Grab FCC In- House NQ 50 1/18/2008 Grab FCC In- House NQ 50 1/20/2008 Grab FCC In- House NQ 50 1/22/2008 Grab FCC In- House NQ 50 1/24/2008 Grab FCC In- House NQ 50 1/26/2008 Grab FCC In- House NQ 50 1/27/2008 Grab FCC In- House NQ 50 1/28/2008 Grab FCC In- House NQ 50 1/29/2008 Grab FCC In- House NQ 50 1/30/2008 Grab FCC In- House NQ 50 2/01/2008 Grab FCC In- House NQ 50 2/02/2008 Grab FCC In- House NQ 50 2/03/2008 Grab FCC In- House NQ 50 2/04/2008 Grab FCC In- House NQ 50 2/06/2008 Grab FCC In- House NQ 50 2/07/2008 Grab FCC In- House NQ 50 2/08/2008 Grab FCC In- House NQ 50 2/09/2008 Grab FCC In- House NQ 50 2/11/2008 Grab FCC In- House NQ 50 2/13/2008 Grab FCC In- House NQ 50 2/15/2008 Grab FCC In- House NQ 50 2/16/2008 Grab FCC In- House NQ 50 2/17/2008 Grab FCC In- House NQ 50 2/19/2008 Grab FCC In- House NQ 50 2/20/2008 Grab FCC In- House NQ 50 2/21/2008 Grab FCC In- House NQ 50 2/23/2008 Grab FCC In- House NQ 50ATTACHMENT 1A Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 2/26/2008 Grab FCC In- House NQ 50 2/28/2008 Grab FCC In- House NQ 50 2/29/2008 Grab FCC In- House NQ 50 3/02/2008 Grab FCC In- House NQ 50 3/04/2008 Grab FCC In- House NQ 50 3/06/2008 Grab FCC In- House NQ 50 3/07/2008 Grab FCC In- House NQ 50 3/09/2008 Grab FCC In- House NQ 50 3/11/2008 Grab FCC In- House NQ 50 3/12/2008 Grab FCC In- House NQ 50 3/14/2008 Grab FCC In- House NQ 50 3/15/2008 Grab FCC In- House NQ 50 3/ 17/2008 Grab FCC In- House NQ 50 3/20/2008 Grab FCC In- House NQ 50 3/21/2008 Grab FCC In- House NQ 50 3/24/2008 Grab FCC In- House NQ 50 3/25/2008 Grab FCC In- House NQ 50 3/29/2008 Grab FCC In- House NQ 50 3/30/2008 Grab FCC In- House NQ 50 04/01/2008 Grab FCC In- House NQ 50 04/02/2008 Grab FCC In- House NQ 50 04/05/2008 Grab FCC In- House NQ 50 04/06/2008 Grab FCC In- House NQ 50 04/07/2008 Grab FCC In- House NQ 50 04/08/2008 Grab FCC In- House NQ 50 04/09/2008 Grab FCC In- House NQ 50 04/ 09/2008 Grab FCC In- House NQ 50 04/05/2008 Grab FCC In- House NQ 50 04/06/2008 Grab FCC In- House NQ 50 04/07/2008 Grab FCC In- House NQ 50 04/08/2008 Grab FCC In- House NQ 50 04/09/2008 Grab FCC In- House NQ 50 04/11/2008 Grab FCC In- House NQ 50 04/12/2008 Grab FCC In- House NQ 50 04/13/2008 Grab FCC In- House NQ 50 04/15/2008 Grab FCC In- House NQ 50 04//16/2008 Grab FCC In- House NQ 50 04/18/2008 Grab FCC In- House NQ 50 04/19/2008 Grab FCC In- House NQ 50 04/22/2008 Grab FCC In- House NQ 50 04/25/2008 Grab FCC In- House NQ 50 04/28/2008 Grab FCC In- House NQ 50 05/02/2008 Grab FCC In- House NQ 50 05/04/2008 Grab FCC In- House NQ 50 05/06/2008 Grab FCC In- House NQ 50 05/07/2008 Grab FCC In- House NQ 50ATTACHMENT 1A Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 05/17/2008 Grab FCC In- House NQ 50 05/19/2008 Grab FCC In- House NQ 50 05/20/2008 Grab FCC In- House NQ 50 05/21/2008 Grab FCC In- House NQ 50 05 /24/2008 Grab FCC In- House NQ 50 05/26/2008 Grab FCC In- House NQ 50 05/30/2008 Grab FCC In- House NQ 50 06/01/2008 Grab FCC In- House NQ 50 06/03/2008 Grab FCC In- House NQ 50 06/06/2008 Grab FCC In- House NQ 50 06/10/2008 Grab FCC In- House NQ 50 06/12/2008 Grab FCC In- House NQ 50 06/16/2008 Grab FCC In- House NQ 50 06/22/2008 Grab FCC In- House NQ 50 06/30/2008 Grab FCC In- House NQ 50 07/01/2008 Grab FCC In- House NQ 50 07/02/2008 Grab FCC In- House NQ 50 07/04/2008 Grab FCC In- House NQ 50 07/05/2008 Grab FCC In- House NQ 50 07/06/2008 Grab FCC In- House NQ 50 07/08/2008 Grab FCC In- House NQ 50 07/09/2008 Grab FCC In- House NQ 50 07/10/2008 Grab FCC In- House NQ 50 07/11/2008 Grab FCC In- House NQ 50 07/15/2008 Grab FCC In- House NQ 50 07/16/2008 Grab FCC In- House NQ 50 07/21/2008 Grab FCC In- House NQ 50 07/24/2008 Grab FCC In- House NQ 50 08/07/2008 Grab FCC In- House NQ 50 08/09/2008 Grab FCC In- House NQ 50 08/10/2008 Grab FCC In- House NQ 50 08/11/2008 Grab FCC In- House NQ 50 08/12/2008 Grab FCC In- House NQ 50 08/14/2008 Grab FCC In- House NQ 50 08/15/2008 Grab FCC In- House NQ 50 08/16/2008 Grab FCC In- House NQ 50 08/17/2008 Grab FCC In- House NQ 50 08/19/2008 Grab FCC In- House NQ 50 08/20/2008 Grab FCC In- House NQ 50 08/21/2008 Grab FCC In- House NQ 50 08/23/2008 Grab FCC In- House NQ 50 08/25/2008 Grab FCC In- House NQ 50 08/26/2008 Grab FCC In- House NQ 50 08/28/2008 Grab FCC In- House NQ 50 08/30/2008 Grab FCC In- House NQ 50 09/01/2008 Grab FCC In- House NQ 50 09/03/2008 Grab FCC In- House NQ 50 09/04/2008Sample Collection Date Sample

Method Analytical Lab PFOA Concentration (ppb) Limit of Quantification (ppb) 09/05/2008 Grab FCC In- House NQ 50 09/08/2008 Grab FCC In- House NQ 50 09/10 /2008 Grab FCC In- House NQ 50 09/13/2008 Grab FCC In- House NQ 50 09/17/2008 Grab FCC In- House NQ 50 09/18/2008 Grab FCC In- House NQ 50 09/21/2008 Grab FCC In- House NQ 50 09/23/2008 Grab FCC In- House NQ 50 09/26/2008 Grab FCC In- House NQ 50 10/01/2008 Grab FCC In- House NQ 50 10/02/2008 Grab FCC In- House NQ 50 10/06/2008 Grab FCC In- House NQ 50 10/08/2008 Grab FCC In- House NQ 50 10/11/2008 Grab FCC In- House NQ 50 10/16/2008 Grab FCC In- House NQ 50 10/27/2008 Grab FCC In- House NQ 50 10/31/2008 Grab FCC In- House NQ 50 11/01/2008 Grab FCC In- House NQ 50 11/06/2008 Grab FCC In- House NQ 50 11/29/2008 Grab FCC In- House NQ 50 12/01/2008 Grab FCC In- House NQ 50 12/10/2008 Grab FCC In- House NQ 50 12/14/2008 Grab FCC In- House NQ 50 12/23/2008 Grab FCC In- House NQ 50 01/02/2009 Grab FCC In- House NQ 50 01/07/2009 Grab FCC In- House NQ 50 01/25/2009 Grab FCC In- House NQ 50 01/26/2009 Grab FCC In- House NQ 50 02/15/2009 Grab FCC In- House NQ 50 02/16/2009 Grab FCC In- House NQ 50 02/17/2009 Grab FCC In- House NQ 50 02/19/2009 Grab FCC In- House NQ 50 02/27/2009 Grab FCC In- House NQ 50 03/01/2009 Grab FCC In- House NQ 50 03/05/2009 Grab FCC In- House NQ 50 03/11/2009 Grab FCC In- House NQ 50 03/15/2009 Grab FCC In- House NQ 50 03/16/2009 Grab FCC In- House NQ 50 03/17/2009 Grab FCC In- House NQ 50 03/19/2009 Grab FCC In- House NQ 50 03/21/2009 Grab FCC In- House NQ 50 03/23/2009 Grab FCC In- House NQ 50 03/27/2009 Grab FCC In- House NQ 50 03/28/2009 Grab FCC In- House NQ 50 03/29/2009 Grab FCC In- House NQ 50 03/30/2009 Grab FCC In- House NQ 50 04/03/2009 Grab FCC In- House NQ 50 04/29/2009 Grab FCC In- House NQ 50 ATTACHMENT 1 AATTACHMENT 2 

## Biennial Report for the Manufacture of APFO Calendar Years of 2002 and 2003 DuPont Company – Fayetteville Works Note: The information contained in this document is submitted voluntarily and may be subject to future revision and/or modification. COMPANY SANITIZED PUBLIC COPY T

### his report is submitted pursuant to com mitments made by DuPont in a March 14, 2003, Letter of Intent (LOI) to Stephen L. Johnson, Assistant Administrator, USEPA, entitled “Voluntary Actions to Evaluate and Control Emissions of Ammonium Perfluorooctanoate (APFO). Pursuant to Addendum III of t his LOI, provision 5, a facility manufacturing APFO is required to, beginning in the year after production commences, and continuing for five consecutive years following, for the prior calendar year, report to EPA biennially the following information on a calendar year basis: 1. Annual production volume of APFO; 2. Emissions per facility (air, water, waste); 3. Summary report of groundwater monitoring results; 4. Summary report of surface water monitoring results; 5. Workplace industrial hygiene monitoring; and 6. Summary data on employee blood monitoring results. This report provides the above information for calendar years 2002 and 2003. General Facility Information

Company Name: E. I. du Pont de Nemours and Company Site Location: Site where APFO is manufactured:

DuP ont Company

– Fayetteville Works 22828 NC Highway 87 W Fayetteville, NC 28306- 7332

### Annual production volume of APFO ATTACHMENT 2



### The DuPont Company

– Fayetteville Works’ APFO Manufacturing Facility commenced production in late 2002. The following table shows the total production volume of APFO for calendar years 2002 and 2003.

Calendar Year APFO Production 2002 [ CBI ] 2003 [ CBI ] 1. Emission per facility (air, water, waste); The DuPont Company

– Fayetteville Works’ APFO Manufacturing Facility has estimated the quantity of PFOA emitted to the atmosphere as air emissions using engineering calculations. In addition, stack testing performed in 2003 showed the PFOA emissions to be less than the analytical detection limit. 1 

### Annually a sample of the site’s surface water discharge to the Cape Fear River is analyzed for PFOA; however that monitoring shows the PFOA to be less than the quantification limit of the analytical method. The waste emissions are the quantities of PFOA, on a dry basis, that are estimated to have been present in the various solid waste streams transferred from the Fayetteville Works site. The following table gives the estimated emissions of APFO to specific media from the Fayetteville Works during the subject years: Emission Media 2002 2003 Air 17 lb. 22 lb. Water Note 1 

### NQ Waste 35 lb. 3,236 lb. Note 1: Due to the late start-up of the APFO Manufacturing Facility and the short duration of the 2002 production run, no surface water monitoring occurred in 2002. NQ = less than the practical analytical quantification limit of 0.05 g/L 2. Summary report of groundwater monitoring results In 2002, the DuPont Company

– Fayetteville Works performed air dispersion modeling to determine the most probable locations for the atmo spheric deposition of PFOA from the new manufacturing facility. New monitoring wells were installed in the surficial aquifer at the two locations predicted by the modeling.

1 While APFO is the substance manufactured at the facility, the substance measured by analytical techniques is the perfluorooctanoate anion (PFOA) 

### Confidential Business InformationATTACHMENT 2



### In 2003, the Fayetteville Works site began annual monitor ing of the groundwater for PFOA. The monitoring involved the two newly installed wells described above, and included two existing monitoring wells. Groundwater monitoring conducted in January and March 2003 showed no quantifiable levels of PFOA in th e two new wells and the existing well at the Old Biosludge Lagoon (SMU- 01, SWM - 02, and MW - 1S respectively). These monitoring events did indicate levels of PFOA above the quantification limit at the existing well located upgradient of the Nafion® Common Sump. Following discussions with the North Carolina Division of Waste Management, the 2004 groundwater monitoring was expanded to include three existing wells downgradient of the Nafion® Common Sump area. The 2004 monitoring results were virtually identical to those in 2003, and the three above - mentioned downgradient wells showed PFOA concentrations of 0.303 g/L, 1.530 g/L, and 0.123 g/L respectively. It is believed that the detected PFOA is a result of a historical release originating from the Nafion® manufacturing area’s common process wastewater sump. That source has been eliminated from the site. The following table shows the groundwater monitoring analytical results for 2003 and 2004 

### Sample Name (Monitoring Well Description) Monitoring Date PFOA

( g/L) 01/27/03 <0.01 03/27/03 <0.01 SMU- 01 (New well on River Pump Road; East of APFO Facility) 02/04/04 <0.01 01/27/03 <0.01 03/27/03 <0.01 SMU- 02 (New well at Construction Gate entrance; Southwest of APFO Facility) 02/04/04 <0.01 01/28/03 <0.05 01/28/03 <0.05 03/27/03 <0.05 MW - 1 S (Existing well at Old Biosludge Lagoon SWMU by Central WWTP; South of APFO Facility) 02/04/04 <0.05 01/27/03 0. 065 03/27/03 0.068 03/27/03 0.063 NAF -01 (Existing well upgradient of Nafion® Common Sump; Southeast of APFO Facility) 02/04/04 0.062 NAF -02 (Existing well downgradient of Nafion® Common Sump; Southeast of APFO Facility) 02/04/04 0.303 NAF -03 (Existing well downgradient of Nafion® Common Sump; Southeast of APFO Facility) 02/04/04 1.530 NAF -04 (Existing well downgradient of Nafion® Common Sump; Southeast of APFO Facility) 02/04/04 0.123ATTACHMENT 2



### 3. Summary report of surface water monitoring results As reported in Item 1 above, the DuPont Company

– Fayette ville Works annually monitors for PFOA in the site’s surface water discharge to the Cape Fear River. The monitoring conducted in both 2003 and 2004 shows the PFOA to be less than the quantification limit of the analytical method, or less than 0.05  g/L. No surface water monitoring occurred in 2002 due to the late start-up of the APFO Manufacturing Facility and the short duration of the 2002 production run. 4. Workplace industrial hygiene monitoring The DuPont Company

– Fayetteville Works began workplace monitoring for PFOA with the start up of the APFO Manufacturing Facility in 2002. The workplace monitoring in 2002 and 2003 consisted of stationary area monitors that sampled the building air space for twelve (12) continuous hours. These sampled locations are limited access restricted areas in which personnel wear both respiratory and dermal personnel protection. The analytical results reported in the following table are the 12 -hour time weighted average (TWA) PFOA concentration values. Year Sample

Type Num

ber of Samples Minimum

Conc. (mg/m

3

### ) Maximum Conc. (mg/m

3

### ) Average Conc. (mg/m

3

### ) 2002 4 0.008 0.024 0.017 2003 Area 12-hr

TWA 105 0.000 0.292 0.010 mg/m3 

### = milligrams per cubic meter 5. Summary data on employee blood monitoring results At the DuPont Com

pany – Fayetteville Works, blood serum levels of PFOA have been measured since 2002. A summary of results of employees with identified APFO exposure potential in 2002 and 2003 is presented in the table below. The entire data set of blood concentrations is available upon request. Year Number of

Samples Minimum

Concentration (ppm) Maximum

Concentration (ppm) Average

Concentration (ppm) 2002 17 0.004 0.020 0.011 2003 44 0.008 2.280 0.217 ppm = parts per million

### ATTACHMENT 3 

## LETTER OF INTENT SUBMISSION Biennial Report for APFO Manufacture Calendar Years of 2004 and 2005 E. I. du Pont de Nemours and Company Fayetteville Works Site Bladen County, North Carolina Note: The information contained in this document is submitted voluntarily and may be subject to future revision and/or modification. COMPANY SANITIZED PUBLIC COPY This report is submitted pursuant to commitments made by E. I. du Pont de Nemours and Company (DuPont) in a March 14, 2003, Letter of Intent (LOI) to Stephen L. Johnson, Assistant Administrator, United States Environmental Protection Agency (EPA), entitled “Voluntary Actions to Evaluate and Control Emissions of Ammonium Perfluorooctanoate (APFO)”. Pursuant to Addendum III, provision 5, of this LOI, a facility manufacturing APFO will, beginning in the year after production commences, and continuing for five consecutive years following, for the prior calendar year, report to EPA biennially the following information on a calendar year basis: 7. Annual production volume of APFO; 8. Emissions per facility (air, water, waste); 9. Summary report of groundwater monitoring results; 10. Summary report of surface water monitoring results; 11. Workplace industrial hygiene monitoring; and 12. Summary data on employee blood monitoring results. This report provides the above information for calendar years 2004 and 2005, and includes data received as of May 15, 2006, for the Fayetteville Works site (“the site”). General Facility Information

Company Name: E. I. du Pont de Nemours and Company Site Location: Site where APFO is manufactured:

DuPont Company

– Fayetteville Works 22828 NC Highway 87 W Fayetteville, NC 28306- 7332

### ATTACHMENT 3

6. Annual production volume of APFO The following table shows the total production volume of APFO for cale ndar years 2004 and 2005. Calendar Year APFO Production

2004 [ CBI ] 2005 [ CBI ] 7. Emission per facility (air, water, waste) For air emissions, the quantity of APFO emitted to the atmosphere in 2004 and 2005 from the site was estimated using engineering calculations. For surface water emissions, annually a sample of the site’s final surface water discharge to the Cape Fear River is tested for the presence of APFO 2 

### . For 2004 and 2005, results showed APFO to be less than the analytical method’s quantification limit of 0.050 

### g/L (0.050 parts per billion). The reported emissions were calculated using this analytical result (<0.050 

### g/L) and the average discharge flow rate (12.397 million gallons per day in 2004 and 10.441 million gallons per day in 2005). The waste emissions are the quantities of APFO, on a dry basis, that are estimated to have been present in the various solid waste streams transferred from the Fayetteville Works site. The following table gives the estimated emissions of APFO to specific media from the Fayetteville Works during the subject years:

Media 2004 2005 Air 47.3 lb. 55.5 lb. Water <1.9 lb. <1.6 lb. Waste 9,914 lb. 10,019 lb. 8. Summary report of groundwater monitoring results In 2004, 2005, and 2006, the Fayetteville Works site continued the annual groundwater monitoring for APFO that began in 2003. The monitoring involved both newly installed wells and existing monitoring wells. All groundwater and surface water concentrations are reported as APFO (see footnote 1 on this page). This report also provides results available as of May 30, 2006

2 While APFO is the substance manufactured at the facility, the substance measured by analytical techniques is the perfluorooctanoate anion (PFO  ). The commercial laboratory converts this analytical result to an APFO value via molecular weight calculations. For consistency with the previously submitted biennial report for this site, results are reported as the calculated APFO values. 

### Confidential Business Information

### ATTACHMENT 3

The following table reports the groundwater monitoring analytical results, both onsite and offsite, for 2004, 2005, and year -to- date 2006: Summary of Groundwater Analytical Results DuPont Fayetteville Works 2004 – 2006 Sample ID (Groundwater Monitoring Well Description) Monitoring Date APFO

( g/L) 02/03/04 NQ (<0.050) 06/20/05 NQ (<0.050) MW - 1S Onsite monitoring well located near the inactive Biosludge Lagoon area in the perched groundwater above a local clay feature ; South of the APFO Manufacturing Facility. 01/24/06 0.038 MW -2S Onsite monitoring well located near the inactive Biosludge Lagoon area in the perched groundwater abo ve a local clay feature; South of the APFO Manufacturing Facility. 06/20/05 NQ (<0.050) MW -5D Onsite monitoring well located near the inactive Biosludge Lagoon area in the surficial groundwater beneath a local clay feature; South of the APFO Manufa cturing Facility. 06/20/05 NQ (<0.050) MW -7S Onsite monitoring well located near the inactive Biosludge Lagoon area in the perched groundwater above a local clay feature; South of the APFO Manufacturing Facility. 10/18/05 0.047 MW - 10D Onsite monitoring well located near the inactive Biosludge Lagoon area in the surficial groundwater beneath a local clay feature; South of the APFO Manufacturing Facility. 06/20/05 ND (<0.100) 02/04/04 0.062 06/15/05 0.104 10/13/05 0.151 NAF - 01 Onsite monitoring well located upgradient of the Nafion® Common Sump in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 02/01/06 0.115 02/04/04 0.307 06/15/05 0.338 10/14/05 0.246 NAF - 02 Onsite monitoring well located downgradient of the Nafion® Commo n Sump in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 02/01/06 0.316 02/04/04 1.530 06/15/05 0.663 10/14/05 0.872 NAF - 03 Onsite monitoring well located downgradient of the Nafion® Common Sum

p in the perched groundwater above a local clay feature ; Southeast of the APFO Manufacturing Facility. 01/25/06 0.434  g/L = micrograms per liter or parts per billion

### Summary of Groundwater Analyti cal Results DuPont Fayetteville Works 2004 – 2006 ATTACHMENT 3 Sample ID (Groundwater Monitoring Well Description) Monitoring Date APFO

( g/L) 02/04/04 0.124 06/17/05 0.093 10/18/05 0.212 NAF - 04 Onsite monitoring well located downgradient of the Nafion® Common Sump in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 02/01/06 0.065 11/11/04 0.239 NAF - 05A Onsite monitoring well located downgradient of the Nafion® Common Sump in the perched groundwater abov e a local clay feature; Southeast of the APFO Manufacturing Facility. 10/13/05 0.187 NAF - 05B Onsite monitoring well located downgradient of the Nafion® Common Sump in the surficial groundwater beneath a local clay feature; Southeast of the APFO Manufacturing Facility. 11/11/04 ND (<0.010) 06/ 16/05 0.262 10/14/05 0.535 NAF - 06 Onsite monitoring well located northeast of the Fluoromonomers production area in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 01/31/06 0.303 06/16/05 NQ (<0.050) 10/14/05 0.085 NAF - 07 Onsite monitoring well located northeast of the Fluoromonomers production area in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 01/31/06 0.065 06/17/05 0.072 10/13/05 0.172 NAF - 08A Onsite monitoring well located southeast of the Fluoromonomers production area in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility 01/31/06 0.053 06/21/05 ND (<0.010) 10/13/05 NQ (<0.011) NAF - 08B Onsite monitoring well located southeast of the Fluoromonomers production area in the surficial groundwater beneath a local clay feature ; Southeast of the APFO Manufacturing Facility 01/31/06 NQ (<0.012) 06/16/05 0.080 10/13/05 0.12 1 NAF - 09 Onsite monitoring well located south of the Fluoromonomers production area in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 02/01/06 0.086  g/L = micrograms per liter or parts per billion

### Summary of Groundwater Analytical Results DuPont Fayetteville Works 2004 – 2006 Attachment 3 

### Sample ID (Groundwater Monitoring Well Description) Monitoring Date APFO

( g/L) 06/16/05 0.122 10/13/05 0.134 NAF - 10 Onsite monitoring well located south of the Fluoromonomers production area in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 02/01/06 0.088 07/05/05 NQ (<0.05) 10/17/05 0.021 NAF - 11A Onsite monitoring well located northeast of the Fluoromonomers production area in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 01/26/0 6 0.048 07/05/05 ND (<0.010) NAF - 11B Onsite monitoring well located northeast of the Fluoromonomers production area in the surficial groundwater beneath a local clay feature; Southeast of the APFO Manufacturing Facility. 10/17/05 ND (<0.002) 11/16/05 0.011 4328MLR Offsite private residential drinking water well; Northeast of the APFO Manufacturing Facility. 11/16/05 NQ (<0.022) 11/16/05 ND (<0.005) 6999PED Offsite private residential drinking water well; Northwest of the APFO Manufacturing Facility. 11/16/05 ND (<0.002) PW- 01 Offsite private residential drinking water well; West of the APFO Manufacturing Facility. 01/25/06 ND (<0.002) PW- 02 Offsite transient noncommunity public water system; West of the APFO Manufacturing Facility. 01/25/06 ND (<0.002) PW- 03 Offsite transient noncommunity public water system; Southeast of the APFO Manufacturing Facility. 01/25/06 ND (<0.002) PW- 04 Onsite transient noncommunity public water system; Northwest of the APFO Manufacturing Facility. 01/25/06 ND (<0.002) PW- 05 Offsite transient noncommunity public water system; North northwest of the APFO Manufacturing Facility. 01/25/06 NQ (<0.012)  g/L = micrograms per liter or parts per billion

### Summary of Groundwater Analytical Results DuPont Fayetteville Works 2004 – 2006 ATTACHMENT 3 

### Sample ID (Groundwater Monitoring Well Description) Monitoring Date APFO

( g/L) PW- 06 Offsite transient noncommunity public water system; North northwest of the APFO Manufacturing Facility. 01/25/06 ND (<0.002) PW- 07 Offsite private residential drinking water well; Southsouthwest of the APFO Manufacturing Facility. 03/30/06 ND (<0.001) PZ- 04 Onsite monitoring well located southeast of Nafion® Comm on Sump in the perched groundwater above a local clay feature; Southeast of the APFO Manufacturing Facility. 02/01/06 0.617 10/17/05 0.021 12/13/05 0.015 PZ- 12 Onsite monitoring well located southeast of the APFO Manufacturing Facility in the perched groundwater above a local clay feature. 01/26/06 0.018 PZ- 15 Onsite monitoring well located northwest of the PMDF Facility in the perched groundwater above a local clay feature; South- southeast of the APFO Manufacturing Facility. 01/26/06 0.03 2 PZ- 16 Onsite monitoring well located southeast of the PMDF Facility in the perched groundwater above a local clay feature; South southeast of the APFO Manufacturing Facility. 01/26/06 NQ (<0.012) 02/03/04 ND (<0.010) 06/20/05 ND (<0.010) SMW -01 Onsite monitoring well located east of the Construction Gate entrance near Highway 87 in the surficial aquifer; Southwest of the APFO Manufacturing Facility. 01/24/06 ND (<0.002) 02/03/04 ND (<0.010) 06/20/05 ND (<0.010) 09/06/05 NQ (<0.007) 10/17/05 ND (<0.002) SMW -02 Onsite monitoring well located north of the River Pump Road, north of the Fluoromonomers manufacturing area, in the perched groundwater above a local clay feature; East of the APFO Manufacturing Facility. 0 1/26/06 NQ (<0.012)  g/L = micrograms per liter or parts per billion

### Summary of Groundwater Analytical Results DuPont Fayetteville Works 2004 – 2006 ATTACHMENT 3 

### Sample ID (Groundwater Monitoring Well Description) Monitoring Date APFO

( g/L) SMW - 02B Onsite monitoring well located north of the River Pump Road, north of the Fluoromonomers manufacturing area, in the surficial groundwater beneath a local clay feature; East of the APFO Manufacturing Facility. 10/17/05 ND (<0.022) 10/17/05 2.25 11/10/05 2.51 SMW - 04B Onsite monitoring well located north of the River Pump Road, north of the APFO Manufacturing Facility, in the surficial groundwater beneath a local clay feature. 01/24/06 1.30 10/17/05 147 SMW - 05 Onsite monitoring well located north of and adjacent to the APFO Manufacturing Facility, in the perched groundwater above a local clay feature. 12/13/05 765 SMW - 05P Onsite monitoring well located north of and adjacent to the APFO Manufacturing Facility, in the surficia l groundwater beneath a local clay feature. 02/22/06 6.5 12/13/05 0.224 SMW - 06 Onsite monitoring well located east of and adjacent to the APFO Manufacturing Facility, in the perched groundwater above a local clay feature. 01/26/06 0.261 10/17/05 0.019 12/13/05 NQ (<0.012) SMW - 07 Onsite monitoring well located south of and adjacent to the APFO Manufacturing Facility, in the perched groundwater above a local clay feature. 01/26/06 NQ (<0.012) #562877 - Domestic H 2

### O Inactive onsite drinking water well located near the Powerhouse area, screened in the Upper Cape Fear confined aquifer; South of the APFO Manufacturing Facility. 07/15/04 ND (<0.010) #562878

– Domestic H 2 

### O Inactive onsite drinking water well located near the Powerhouse area, screened in the Upper Cape Fear confined aquifer; South of the APFO Manufacturing Facility. 07/15/04 ND (<0.010) INSITU #1 Shallow Onsite monitoring well located near the facility’s northern property line in the upper level of the surficial groundwater; North-northeast of the APFO Manufacturing Facility. 12/20/05 NQ (<0.013)  g/L = micrograms per liter or parts per billion

### Summary of Groundwater Analytical Results DuPont Fayetteville Works 2004 – 2006 ATTACHMENT 3 

### Sample ID (Groundwater Monitoring Well Description) Monitoring Date APFO

( g/L) INSITU #2 Deep Onsite monitoring well located near the facility’s northern property line in the lower level of the surficial groundwater; Northwest of the APFO Manufacturing Facility. 12/20/05 ND (<0.027) INSITU #2 Shallow Onsite monitoring well located near the facility’s northern property line in the lower level of the surficial groundwater; Northwest of the APFO Manufacturing Facility. 12/20/05 NQ (<0.013) LTW- 01 Onsit e monitoring well located near the facility’s eastern property line along the Cape Fear River in the surficial groundwater; East of the APFO Manufacturing Facility. 02/02/06 0.033 LTW- 02 Onsite monitoring well located near the facility’s eastern prop erty line along the Cape Fear River in the surficial groundwater; East -southeast of the APFO Manufacturing Facility. 02/02/06 ND (<0.002) LTW- 03 Onsite monitoring well located near the facility’s eastern property line along the Cape Fear River in the surficial groundwater; East -southeast of the APFO Manufacturing Facility. 02/01/06 ND (<0.002) LTW- 04 Onsite monitoring well located near the facility’s eastern property line along the Cape Fear River in the surficial groundwater; Southeast of the APFO Manufacturing Facility. 01/24/06 ND (<0.002) LTW- 05 Onsite monitoring well located near the facility’s eastern property line along the Cape Fear River in the surficial groundwater; Southeast of the APFO Manufacturing Facility. 02/02/06 ND (<0.002)  g/L = micrograms per liter or parts per billion 

### 9. Summary report of surface water monitoring results The Fayetteville Works facility annually monitors for APFO in the site’s surface water discharge to the Cape Fear River. This monitoring location is the site’s final effluent discharge at the NPDES permitted Outfall 002. The results of that monitoring are shown in the following table:

### Surface Water Sample ID

(Sample Description) Monitoring Date APFO

( g/L) 02/03/04 NQ (<0.050) 06/20/05 NQ (<0.050) Outfall 002 Final NPDES perm

itted wastewater discharge; Located south of the central wastewater treatment plant and south of the APFO Manufacturing Facility. 01/24/06 0.025  g/L = micrograms per liter or parts per billion 

### Monitoring of stagnant water in a stormwater conveyance ditch was conducted in 2005. While this stagnant water meets the definition of a surface water, it should be noted that this water consisted of exclusively non- flowing puddles of water at the time of the sampli ng. The results of that monitoring are shown in the following table: Surface Water Sample ID (Sample Description) Monitoring Date APFO

( g/L) 06/20/2005 0.100 09/06/2005 0.129 SW- 01 Stormwater ditch north of Fluoromonomers area; East of the APFO Manufacturing Facility. 10/07/2005 0.068 06/20/2005 0.135 09/06/2005 0.302 SW- 02 Stormwater ditch north of Fluoromonomers area; East of the APFO Manufacturing Facility. 10/07/2005 0.157 06/21/2005 0.142 09/06/2005 0.298 SW- 03 Stormwater ditch north of Fluoromonomers area; East of the APFO Manufacturing Facility. 10/07/2005 0.149 06/20/2005 0.093 SW- 04 Stormwater ditch north of Fluoromonomers area; East of the APFO Manufacturing Facility. 10/07/2005 0.147 SW- 05 Stormwater ditch north of Fluoromonomers area; East of the APFO Manufacturing Facility. 10/07/2005 0.139  g/L = micrograms per liter or parts per billion 

### Sampling of two unnamed tributaries to the Cape Fear River, and two streams flowing to one of those tributaries, was conducted in 2006. It is believed that the base flow in these tributaries is primarily from expressed groundwater, with additional episodic flow from stormwater runoff. The surface water samples described in the table that follows were taken during base flow conditions. The results of that monitoring are shown in the following table:

ATTACHMENT 3ATTACHMENT 3



### Surface Water Sample ID (Sample Description) Monitoring Date APFO

( g/L) SW- 06 Located east of the Fluoromonomers area, in an unnamed tributary (#1) to the Cape Fear River 01/25/2006 0.027 SW- 07 Located east of the Fluoromonomers area, in a stream (#1) flowing into the unnamed tributary #1 01/25/2006 0.040 SW- 08 Located east of the Fluoromonomers area, in a stream (#2) flow ing into the unnamed tributary #1 01/25/2006 0.032 SW- 09 Located east of the PMDF manufacturing area, in an unnamed tributary (#2) to the Cape Fear River 01/25/2006 0.027  g/L = micrograms per liter or parts per billion 

### In 2005, the site’s non-

cont act cooling water and the influent and effluent of the river water sediment basin were sampled. Both of these waters ultimately discharge through the site’s NPDES permitted Outfall 002. The non- contact cooling water is raw river water that is pumped from the Cape Fear River, through equipment to remove heat, and then back to the river. The river water sediment basins receive river water and its sediment that has been removed from the river water as a result of clarification. The results of that monitoring are shown in the following table: Surface Water Sample ID (Sample Description) Monitoring Date APFO

( g/L) NR- 01 Non -contact, once -through cooling water flowing in the open ditch south of the Fluoromonomers area; East of the APFO Manufacturing Facility 09/06/2005 0.077 RW -01 Influent to the filtered river water sediment basin located west of the Fluoromonomers area; East of the APFO Manufacturing Facility 09/06/2005 0.083 RW -02 Effluent from the filtered river water sediment basin loc ated west of the Fluoromonomers area; East of APFO the Manufacturing Facility 09/06/2005 0.081  g/L = micrograms per liter or parts per billion 

### 10. Workplace industrial hygiene monitoring The DuPont Company

– Fayetteville Works began workplace monitoring for perfluorooctanoic acid (PFOA) with the start up of the APFO Manufacturing Facility in 2002. The workplace monitoring in 2004 and 2005 consisted of stationary area monitors that sampled the building air space for twelve (12) continuous hours. These sampled locations are limited access restricted areas in which personnel wear both respiratory and

### dermal personnel protection. The 12-hour time weighted average (TWA) PFOA

concentration values are shown in the following table: Year Sample Type Number of Samples PFOA

Minimum Conc. (mg/m

3

### ) PFOA Maximum Conc. (mg/m 3

### ) PFOA

Average Conc. (mg/m 3

### ) 2004 85 0.00021 1.9 0.041 2005 Area 12 -hour

TWA 42 <0.00021 0.061 0.0081 mg/m 3 

### = milligrams per cubic meter 11. Summary data on employee blood monitoring results At the DuPont Company

– Fayetteville Works, blood serum levels of PFOA have been measured since 2002. A summary of results of employees with identified APFO exposure potential in 2004 and 2005 is shown in the following table: Year Number of

Samples PFOA

Minimum Concentration (ppm) PFOA

Maximum Concentration (ppm) PFOA

Average Concentration (ppm) 2004 56 0.0027 1.87 0.437 2005 64 0.0031 4.54 0.504 ppm = parts per million Additional monitoring information Additional APFO monitoring information that is not specified by the LOI is being reported in Appendix A of the site’s Phase II RCRA Facility Investigation (RFI) Report. This additional information will be the analytical results for APFO concentrations of samples taken of soil, sediment, ambient air, and t he Cape Fear River. A copy of the Phase II RFI Report was submitted to the N.C. Division of Waste Management on June 30, 2006 and will be provided to EPA Docket OPPT- 2003 - 0012 as a separate submission.

ATTACHMENT 3

### Table 1

– Page 1 of 2 

# ATTACHMENT 3A CONFID ENTIAL BUSINESS INFORMATION

(CBI)

# ATTACHMENT 3B CONFIDENTIAL BUSINESS INFORMATION (CBI)

# ATTACHMENT 4 CONFIDENTIAL BUSINESS INFORMATION (CBI)

# ATTACHMENT 5 CONFIDENTIAL BUSINESS INFORMATION (CBI)

# ATTACHMENT 6 CONFIDENTIAL BUSINESS INFORMATION (C BI)