Does not contain TSCACBI H-23004: Oral Approximate Lethal Dose (ALP) in Rats__________________.DuPont HL-1997-01291 RECORDS RETENTION All study records, raw data, and the final report are retained at Haskell Laboratory, Newark, Delaware, or at Iron Mountain, 200 Todds Lane, Wilmington, Delaware 19802 (formerly known as the E.

i B WEST 780 760 748 720 i 700 - 600 g 5U/ 660 d 640 620 600 660 560 GEOLOGICAL CROSS-SECTION B LETART LANDFILL DUPONT WASHINGTON WORKS 6900I0ZfH PARKERSBURG WEST VIRGINIA B' EAST B' LEOEND SANDSTONE AND SIU3TONE ] SHALE I SICNWtTCNRrViM!

Background in 1978, the 3M Company notified DuPont that they had observed elevated organic fluorine levels In the blood of their workers exposed to ammonium perfluoro-octanoate.

When I say industry, I don't mean AFFF makers, I mean the DuPonts of the world.

Playtis, 6/30/99 P JB 003934 E ID 6 1 3 6 2 6 C -S IN BLOOD - HISTORICAL 1978 Informed by 3 M tha-t C-8 Is found in the blood of exposed workers and persists for a long time. 1979 C-8 found in blood of DuPont workers. . 1980 Workers with blood C-8 found to have normal liver function. '' 1981 Birth defects scare - additional sampling.

Two DuPont documents produced to 3M by plaintiffs in litigation referencing retiree half-life data which corroborate 3M's retiree half-life study : o Playtis, A.J.

RECYCLED '4 AR226-2657 AR226-2657 ISC Modeling Methodology and Results Introduction This report summarizes dispersion modeling that was completed in support of anticipated updates to R13 permits 1953A and 2365B at the DuPont Washington Works site.

Two DuPont documents produced to 3M by plaintiffs in litigation referencing retiree half-life data which corroborate 3M's retiree half-life study: o Playtis, A.J.

*y s r i 8EH Q -0 3 1 0 -1 6 4 7 8 L 89100000149 March 15,2010 DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P.O.

The AFFF mfgrs are not responsible for controlling these trace materials, but rather the fluorosurfactant mfgrs, such as Dupont.

ZIpfel" <ZiPFEL@W W PS-A1.EMAlL.DUPONT.COW I> on 09/11/99 02:56:00 AM To: Roger J Zipfel/AE/DuPont cc: Subject: (C-8 ANALYTICAL/18-Feb-1994)First draft C-8 sampling + analys Date: Fri, 18 Feb 1994 13:46:00 EDT From: Rik Brandenburg <BRANDERA@EU0IS2-A1.EMAIL.DUPONT.COM> Subject: First draft C-8 sampling + analysis procedure To: Gerard Rietbroek <RIETBRG@EUOIS2-Al.EMAIL.DUPONT.COM>, Willem Huisman <HUISMAWSEUOIS2--A 1 .EMAIL.DUPONT.COM>, "Richard W.

Tebo Title: Vice President DuPont Safety, Health and Environment Xb Attachment 6

RECYCLED I */ AR226-2654 AR226-2654 ISC Modeling Methodology and Results Introduction This report summarizes dispersion modeling that was completed for the DuPont Washington Works facility to demonstrate that the emission limits included in Permit Application 2365D for the PFA(Cl-P) operation complies with the C-8 assessment of toxicity (CAT) recommended airborne screening level o f 1.0 ug/m3 at the property line fence.

Jung has studied both the DuPont and 3M studies.

DOCS NOT CONTAIN CBI March 18,2010 8EHQ-0310-16436M 89100000163 DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P.O.