if PROPOSAL ON MONITORING Tiered or Phased Approach Focus on Two Locations, Two Sites Decatur, AL 3M & Dyneon Parkersburg, WV DuPont Phases of the Comprehensive Monitoring Program Phase I - LOI Commitments, Historic/Ongoing Monitoring Activities Phase II - Additional Monitoring Proposal (Dec. 2003) Consideration of Peer Consultation for Assessment of D Inform Decisions for Phase III Monitoring Plans Phase III - Additional Monitoring \^^ SITE SPECIFIC MONITORING PLANS Decatur, AL - 3M & Dyneon Parkersburg, WV - DuPont DECATUR, AL - 3M & DYNEON SITE DESCRIPTION 900 Acre Site in a Rural Area A Number of Industrial Complexes in the Vicinity River Width in Vicinity ~ 3-4 miles Distance to the City of Decatur ~ 4 miles Groundwater Flow well Characterized in Northern part o No private Wells within At least 1.5 Miles of the Site On-Site Wildlife Habitat Area on 3M Property j - Former Sludge Incorporation Area -0 0 0 s - Managed Area with Limited Public Access ^ Figure A Surrounding Area Ma M Dyneon Deeatur Alabama ^ 0 ^ ^1 s "a 0 0 Q M W 01 UTMEast km Image courtesy ofUSGS Edge markings shown in Universal Transverse Mercator Coordinates Zone A Da A Pro So DECATUR, AL - 3M & DYNEON DESCRIPTION OF SLUDGE INCORPORATIO Permitted Activity Full Historical Documentation - Number of Fields - Quantity of Solids Deposited Discontinued in 1998 Fields Converted to a Managed Wildlife Habit Area with Limited Public Access (Part of Area now owned by Daikin) ^^ - - r ire A Aerial Ph( M Dyneon ~a 0 o s u ^s A UTMEast km A IEmdaggeemcaorukrintegssy sohfoUwSnGiSn Universal Transverse Mercator Coordinates Zone N W EXP000239 DECATUR.

DuPont will also run CHC13 extractions in parallel.

.; Sponsor; Study Initiated - Completed: In Life Phase Initiated - Completed: None 30X None available DuPont Specialty Chemicals E.

Name: Chine Sakr, MD MPH ' Robin Leonard, PhD 2 Mark Cullen, MD 1 Program Affiliation: Address: Phone: Fax: Email: `-Yale Occupational and Environmental Medicine Program 2Epidemiology Program at DuPont Haskell Laboratory for Health and Environmental Sciences 135 College Street, 3rd floor New Haven, CT 06510 856-816-1539 203-785-7391 carine.sakr@ yale.edu TITLE Twenty-five year longitudinal study of serum total cholesterol related to a serum biomarker of exposure (serum perfluorooctanoate or PFOA) in a polymer production plant.

*MO W twn MIN>uW *KWH-KlWUJ<We DUPONT DE NEMOURS (NEDERLAND) B.V. monitoring c s (a p p o ) w>*"I<-- OBSERVATION WELLS 2002-12-20 BO- *03970 *.

Stahl, DuPont R.

. # Exposure Guidelines Print Data: 08- 17 - 2007 597002 Material DSuapfoentty.Data Sheet Page 5 Exp"oZsOuNYrLeLiSmPitsFluorosurfactant azu + (Dupont) 0.1 mg/m3, 8 & 12 Hr.

E xte n s iv e anim al s tu d ie s were I n it ia t e d p ro m p tly by b o th DuPont and 3M.

.: Sponsor: Study Initialed - Comp.let.ed: DuPont Specialty Chemicals P..

FOR DUPONT USE ONLY AR226-2791 Approximate Lethal Concentration of Haskell Laboratory Report No. 276-85 MR No Haskeli E.

Does net contain TSCA CB\ -6- H-24119: Oral Approximate Lethal Dose (ALD) in Rats DuPont-3358 c.

AR226-2791 FOR DUPONT USE ONLY Approximate Lethal Concentration of i l H H B ^ H n B f i 9 9 E 9 n i n Rats Haskell Laboratory Report No. 276-85 E.

. \ Fallon, R.1, Berti W.R.1, Buck R.C.2 and Gannon J.T.1 1 DuPont Central Research and Development, Newark, DE, ' USA: 2 DuPont Chemical Solutions Enterprise, Wilmington, DE, USA BACKGROUND INFORMATION The backbones of fluorotelomers are made of fluorinated monomers with a -(CF2)- chain length of approx. 4-12.

AR226-2926 FOR DUPONT USE ONLY HASKELL LABORATORYREPORT NO. 180-85 Approximate Lethal Concentration by Inhalation (ALC?

The compound was made in Cottage Grove and Decatur, Ala., and sold to DuPont. 22000066 SSttaarr TTrriibbuunnee..