RECEIVED A fu a - /s Telomer Research Program 1200 South Hayes Street Arlington, Virginia 22202-5050 Tet (703)413-1100 45264 Fac (703)4136111 Clariant February 14, 2003 Mary F.

fitk - I '700 ENCLOSURE 4 ~0 to DescriDtion of the 3M Decatur Inactive Landfill Containment Structure --------------------- k ---------------------------------------------------------------------------------------------------------------------------------------------------------------- --------------------------------- -- , o 50 "t3 m o -H rn At the 3M Decatur site, a RCRA interim remedial measures (IRM) program is q% currently underway to construct a containment structure for an inactive landfill, cirhis IRM program is being undertaken by 3M pursuant to an IRM Work Plan that was approved by the Alabama Department of Environmental Management (ADEM) on December 16, 2002.

PFOS: A TOXICITY TEST TO DETERMINE THE EFFECTS OF THE TEST SUBSTANCE ON SEEDLING EMERGENCE OF SEVEN SPECIES OF PLANTS FINAL REPORT WILDLIFE INTERNATIONAL, LTD.

Laboratory Report-Revision 1 Analytical Report of Data for PFOS Dietary LC50 Study in Northern Bobwhite (Sera and Liver) Laboratory Report No.

3M General Offices March 17, 2000 3M Center 1 1 H Q - 0 3 0 0 - 0 0 3 7 3 u St.

STUDY TITLE Extraction of Potassium Perfluorooctanesulfonate from Mallard Serum and Mallard Liver for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher STUDY COMPLETED ON September 06,2001 PERFORMING LABORATORY / TESTING FACILITY Centre Analytical Laboratories, Inc.

r_e * -o ia + a *jf, j/ u & /* - M4 rhT) DuPont Haskell Laboratory q,e * f - ( - 3 9 u% for Health and Environmental Sciences Elkton Road, P.0.

3M Specialty Materials 2005M 25 PH 3* 11 3M Center St.

AR226-2223 f Mary A K a i s e r __________________ 12/04/2001 03:03 PM To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Barbara S Larsen/AE/DuPont, Daryl P Cobranchi/AE/DuPont@DuPont Subject: Re: Mulit Media Consent Order APFO data requirements O Barbara Larsen, Daryl Cobranchi and I designed an experiment to get headspace concentrations (see your note below).

AR226-2312 Charles J Zarzecki ' 03/13/2003 03:48 PM To: Catherine A Barton/AE/DuPont cc: Subject: Fayetteville Results Cathie, I ran all 5 years ('95 - '99) for Fayetteville using the updated information.

AR226-2508 W ASHING TO N W O RKS - PER M IT W V 0001279 O CTOBER AND NOVEM BER 2001 FC -143 RESULTS (Letter, R .

'^ AR226-2567 ) INTER OFFICE ' -.... " I"ltnm~~ MEMO To; , F rom : Mr.

TRADE SECRET Study Title H-24QQ1: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-2924 AR226-3156 DuPont-2924 Author: Carol Finlay, B.A.

AR226-3206 D uP on t-2931 Supplement N o. 1 TRADESECRET Study TUle H-24042: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Supplement No. 1 Laboratory Project ID: DuPont-2931 Author: Carol Finlay, B.A.

jf - f f Anthony F.