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C8 or C-8: PFOA is perfluorooctanoic acid and is sometimes called C8. It is a man-made chemical and does not occur naturally in the environment. The "PFOA" acronym is used to indicate not only perfluorooctanoic acid itself, but also its principal salts.
The PFOA derivative of greatest concern and most wide spread use is the ammonium salt (
Ammonium perfluorooctanoate) commonly known as C8, C-8, or APFO and the chemical of concern in the Class Action suit in Ohio.

Ammonium perfluorooctanoate (APFO or C8)
CAS No. 3825-26-1. Molecular formula:

Perfluorooctanoic acid (PFOA or C8)
CAS No: 335-67-1
. Molecular formula:

The DuPont site where APFO is used as a reaction aid is the Washington Works (Route 892, Washington, West Virginia 26181) located along the Ohio River approximately seven miles southwest of Parkersburg, West Virginia.

The Little Hocking Water Association well field is located in Ohio on the north side of the Ohio River immediately across from the Washington Works facility. Consumers of this drinking water have brought a Class Action suit against the Association and DuPont for the contamination of their drinking water with DuPont's APFO, which residents and media refer to as C8.

PFOA is used as a processing aid in the manufacture of fluoropolymers to produce hundreds of items such as non-stick surfaces on cookware (TEFLON), protective finishes on carpets (SCOTCHGUARD, STAINMASTER), clothing (GORE-TEX), and the weather-resistant barrier sheeting used on homes under the exterior siding (TYVEK).

 

http://www.forbes.com/work/feeds/ap/2004/09/09/ap1537872.html

Forbes.com

September 9, 2004

Associated Press 04:36 PM

DuPont Agrees to Settle in Teflon Suit

DuPont agreed on Thursday to pay as much as $343 million to settle a class-action lawsuit alleging the chemical giant contaminated drinking water supplies in West Virginia and Ohio with a key ingredient of its Teflon product.

A circuit judge must still approve the terms reached between DuPont and lawyers for as many as 60,000 residents in the area around its Washington Works plant on the Ohio River near Parkersburg. The residents sued over exposure to the chemical C8, also known as ammonium perfluorooctanoate or PFOA.

If approved, the settlement would fund a $5 million study into whether C8 causes disease in humans. If a scientific panel finds such a link, DuPont would pay up to $235 million __ the bulk of the potential settlement __ on medical tests of residents to monitor their health.

DuPont would spend another $10 million to remove as much C8 from the area's water supply as possible by building state-of-the-art water treatment plants in two West Virginia and four Ohio water districts.

"We want to make very clear that settling this lawsuit in no way implies any admission of liability on DuPont's part," general counsel Stacey J. Mobley said. "Nevertheless, a settlement at this time provides benefit to both parties by taking reasonable steps based on science and, at the same time, contributing to the community."

The proposed settlement also includes $70 million that DuPont would pay into a fund to be overseen by a court-appointed administrator. At least $20 million of that would pay for health and education projects. Another $22.6 million of the potential settlement is earmarked for lawyers' fees and expenses.

"We strongly believe that this settlement is in the best interests of the class," said Harry Deitzler, one of the lawyers for the residents. "Had it been litigated, we wouldn't be at this point for another two years."

DuPont shares closed up 14 cents at $42.90 in trading Thursday on the New York Stock Exchange.

DuPont told investors in July that it had set aside $45 million to defend against the lawsuit.

The proposed settlement follows a report that month by the U.S. Environmental Protection Agency alleging DuPont failed to properly report the discovery of C8 in drinking water adjacent to the Washington Works facility and in the blood of pregnant employees at plant.

The EPA is seeking millions of dollars in fines from DuPont for two alleged violations of the Toxic Substances Control Act and one violation of the Resource Conservation and Recovery Act.

DuPont has said it had no legal obligation to provide information to the EPA about C8 releases.

Teflon is one of DuPont's most popular products. The nonstick substance can be found in everything from cookware and clothing to car parts and flooring.

Though used since World War II, C8 is unregulated by either federal or state agencies and its long-term effects on humans are unknown. In early 2002, air and water samples taken by the state Department of Environmental Protection found concentrations of C8 upstream of the plant, apparently released by its stacks and carried by prevailing winds.

Residents of both Ohio and West Virginia filed the lawsuit in 2001. Trial had been set for Oct. 11 in Wood County Circuit Court. Circuit Judge George Hill had ordered DuPont last year to pay for blood tests of residents, but was later overturned by the state Supreme Court.