TSCA-HQ-2004-0016, et. al. Second Quarter 2007 Progress Report July 16, 2007

Page 1 of 3 

### 2 nd 

### Quarter 2007 Progress Report April 1, 2007 to June 30, 2007 Biodegradation Supplemental En vironmental Project (SEP A)

Pursuant to Section V.l.a. of the SEP, DuPont is re quired to submit a quarterly report within thirty days after the end of each calendar-year quarter. This report which is due July 30, 2007 satisfies said requirement.

1. Description of Activities Undertaken

A. Progress Toward a Purification Procedure Agreement

On February 15, 2007, EPA, Exygen and DuPont me t to discuss the December data and the path forward proposal provided by Exygen.

On March 05, 2007, EPA provided DuPont with a Pa th Forward request. From March 05, 2007 until May 1, 2007 DuPont, EPA and Exygen worked to resolve open issues. After resolving issues and agreeing on a path forward, Exygen developed a pr otocol and performed the additional experiments requested by EPA on March 05, 2007.

The final Exygen Analytical Protocol was approved by DuPont May 11, 2007. A Draft Validation Report was provided by Exygen and received by DuPont on J une 4, 2007. On June 8, 2007, DuPont requested raw data from Exygen. The raw data was provided to DuPont on June 8, 2007. After reviewing the data, DuPont and Exygen engaged in correspondences via ema il to resolve some quality issues before moving on to the Sample Protocol. Exygen and DuPont agreed on the Sample Protocol on June 19, 2007. The Draft report for the Sample Data was sent to DuPo nt on June 25, 2007. All protocol, correspondences,

and data were submitted to EPA fo r review on June 26, 2007. DuP ont is waiting for feedback and direction for a path forward from EPA.

Deadlines : On March 23, 2007, a 6 th request for extension for the date for which the parties much agree on a purification procedure was submitted by DuPo nt. On March 27, 2007 , EPA accepted the DuPont request for extension (email correspondence, Jame s Vinch EPA, 03.28.2007 08:52 AM). The new deadline to agree on a purification procedure is August 31, 2007.

B. Panel Administrator Work Plan and DuPont Review of Work Plan

The official contract execution date for ILSI-RF and DuPont Panel Administrator Contract was January 18, 2007. ILSI-RF was required to submit their wo rk-plan to EPA within 60 days from contract execution. On March 16, 2007, ILSI-RF submitted th eir work-plan to DuPont and to EPA. DuPont received the ILSI-RF work-plan on March 19, 2007 . Within 14 business days, on March 30, 2007, DuPont responded with comments to the ILSI-RF Panel Administrator Contract (CD-2006-38). The Panel Administrator work-plan and DuPont comments to the ILSI-RF work-plan are still currently under review by EPA.

C. Submission of First Quarter 2007 Progress Repor t Describing Progress from January 1, 2007 to March 31, 2007.

Section V.I.a. of the CAFO provides that “Within thir ty days after the end of each calendar-year quarter (i.e., by April 30, July 31, October 30 and Janua ry 30) after execution of this Consent AgreementTSCA-HQ-2004-0016, et. al. Second Quarter 2007 Progress Report July 16, 2007

Page 2 of 3 pursuant to Paragraph IX.9., respondent shall subm it in writing a quarterly report for the preceding quarter that shall include a discussion of the Re spondent’s progress in satisfying its obligations in connection with each SEP including a minimum, a narrative description of activities undertaken, compliance with the schedules or milestones set forth in the applicable appendix, and a summary of costs incurred since the previous report.”

On April 27, 2007, a first quarter 2007 progress report c overing the time period from January 01, 2007 to March 31, 2007 was submitted to the EPA (CD-2006-39).

D. Biodegradation and Characterization RFPs

On December 28, 2006, EPA sent via email (see atta ched email from Ilana Saltzbart, 12/28/2006, 01:00 PM) a request for DuPont to resubmit the Biodegradation and Analytical Requests for Proposals. The resubmission will include review, modification and in corporation of the language as it was negotiated in the Panel Administrator contracts where applicable . The deadline for this submission was set for February 01, 2007.

On January 29, 2007, the Biodegradation and Analy tical Requests for Proposals were submitted to EPA (CD-2006-34a, 34b, 35a and 35b). The Biodegradati on and Analytical Requests for Proposals remain under review by EPA.

2. Pending Deadlines and Document Reviews

A. Requests for Proposals to the EPA for Approval

The Biodegradation and Analytical Requests for Proposals remain under review by EPA.

B. Panel Administrator Contract and Work Plan Status

DuPont is currently under contract with ILSI-RF. ILSI –RF has submitted their work-plan to EPA.

DuPont has submitted its comments on the ILSI-RF work -plan to EPA. Both the ILSI-RF work-plan the

DuPont comments are still under review with EPA.

C. Agreement on the Mabury Method of Purification

The new deadline for agreement on a purification pro cedure is August 31, 2007 (per email notification from James Vinch, EPA - March 27, 2007).



### 3. Compliance with Schedules or Milestones

This section outlines the various requests for extensi on granted between January 01, 2007 and March 31, 2007. All deadlines in the first quarter were met. Pending deadlines and open issues are described below.

A. Purification Procedure

The deadline to reach agreement on the purification procedure was extended a Sixth time on March 27, 2007. The new deadline is August 31, 2007.

B. Panel Administrator Contract and Work PlanTSCA-HQ-2004-0016, et. al. Second Quarter 2007 Progress Report July 16, 2007

Page 3 of 3 The Panel Administrator Contract Documents were approved by EPA on January 11, 2007. DuPont launched the Panel Administrator contract in the DuPont Ariba System. ILSI accepted the contract and all signed contracts were received on January 18, 2007. The official contract execution date for ILSI-RF and DuPont Panel Administrator Contract was January 18, 2007.

ILSI-RF was required to submit their work-plan to EPA within 60 days from contract execution. On March 16, 2007, ILSI-RF submitted their work-plan to DuPont and to EPA. Within 14 business days, DuPont responded on March 30, 2007 with comments to the ILSI-RF Panel Administrator Contract. The Panel Administrator work-plan and DuPont comment s to the ILSI-RF work-plan are currently under review by EPA.

C. Quarterly Progress Reports

On April 27, the first quarter 2007 progress report covering the time period fr om January 1, 2006 to March 31, 2007 was submitted to the EPA (CD-2006-39). The next quarterly progress report is due November 31, 2007.

D. Pending Deadline Summary

All deadlines were met in the second quarter of 2007. There are only two pending deadlines at this time:

August 31, 2007 to reach Agreement of the Puri fication Method and August 30, 2007 to submit a 3Q2007 Progress Report.



### 4. Summary of Costs Incurred

The cost of the SEP from April 1, 2007 to June 30, 2007 as it was accounted on cost ledger is shown in

Attachment A. The table shows the costs from both accounts and breaks the cost distribution down into salaries, overheads, travel, operating supplies and an alytical costs. The 2Q2007 costs were for the SEP Biodegradation Main was $55,796. The “Project to Date” costs are $417,096 and $124,803 for the SEP Biodegradation Main and the SEP Biodegradati on Synthesis accounts, respectively.

5. Attachment

Title Number of Pages

Attachment A SEP Cost Summary for 1Q2007 1