AR226-1486 ENVIRONMENTAL AND HEALTH ASSESSMENT OF PERFLUOROOCTANE SULFONIC ACID AND ITS SALTS August 20, 2003 Prepared by 3M in consultation with Jack Moore, D.V.M., DABT, Hollyhouse, Inc.

3M Specialty M ateriali 3M Center S t Paul, MN 55144-1000 651 7331110 January 3,2003 VIA FEDERAL EXPRESS Docum ent C ontrol O ffice (DCO) O ffice o f Pollution Prevention and Toxics (OPPT) US Environm ental Protection Agency EPA East, Room 6428 1201 C onstitution Avenue, NW W ashington, DC 20460 Attention: Docket No.

Page 1 FINAL REPORT Epidemiology, 220-3W-05 Medical Department 3M Company St.

DuPont-15302 Study Title Ammonium Perfluorooctanoate: Age Effect on the PFOA Plasma Concentration in Post-Weaning Rats Following Oral Gavage T est Guidelines: None applicable Author: Paul M.

ARUG-0^3 BIOACCUMULATION (ANALYTICAL ONLY) TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-109, or FC-109-X.

CAS Number 335-77-3 (acid) & 67906-42-7 (ammonium salt) 3M Company 4 . a 6 j T 7 f Voluntary Use and Exposure Information Profile Perfluorodecane sulfonate I.

4 A te & 'i t 3 J1R ENVIRONMENTAL LABORATORY REPORTNO.

A m & -1105 Sponsor: 3M St.

AR226-1942 31 March 2005 " To: Mary F.

AR226-1998 TRENDS IN C-8 IN AIR LEVELS FEE Area (Composite Avg.) .1980 C-8 T n Air' (mpb) AEL 0.56 1981 1982 1983 1.87 0.32 Not Calculated 0,15 FEE Wet Finishing Operator 0.95 0.30 FEE - No, 1 Clean Boom No. 2 Clean Boom 6;80 3.11 Fine Powder Dryer Operator 1.40 0.56 Fine Powder Dryer Boom (Composite Avg.) 3.00 2.47 0.09 3.54 0.15 0.37 0.11 0.19 0.06 0.23 JWR:ldr 10/19/83 AJP003476 EID077033

S O HEM S AR226-2469 -o ; 8/7, DuPont Washinspim Worts P. 0.

AR226-2524 DuPont Engineering Barley Mill Plaza - Bldg. 27 4417 Lancaster Pike Wilmington, D E19805 November 8,2004 David P.

AR226-2507 COMPILATION OF HISTORICAL C-8 DATA DUPONT WASHINGTON WORKS MAIN PLANT AND LANDFILLS Date: January 2002 Project No: D6WW7423 h^ CORPORATE REMEDIATION GROUP An ASSamnbetmmn DuPontend tlHS Diamond B u ky Mill Ptea.

AR226-2529 C-8 DETECTED WASHINGTON WORKS SITE * SUPERNATE POND AREA - CONTAMINATED SOIL - GROUNDWATER (-20 FT) i WEST END OF SITE - WELLS 27 & 4 - GROUNDWATER (-75 FT*) NO. 5 OU TF AL L . - DISCHARGE TO OHIO RIVER WASHINGTON WORKS EMPLOYEES 1991 (VOLUNTARY TESTING) DRINKING WATER (LPSD) 1984 - 1989 1991 LETART LANDFILL SURFACE WATER - LEACHATE POND OVERFLOW GROUNDWATER - WELL SAMPLES DRY RUN LANDFILL SUPERNATE SLUDGE t SURFACE WATER - UPPER POND - SEDIMENTATION BASIN - DISCHARGE STREAM AT PROPERTY LINE GROUNDWATER - MONITOR WELLS *Revised analytical method PPM 100 100 PPB 2-4 40 PPM UP TO 5 PPB 0,7 2,2 3.8* PPM 2-3 0.05 - 0*7 PPM 75-100 2-3 2-3 0*04 - *2 PPB 2-5 RJZOI0004 EID079259

AR226-2712 AR226-2712 Environmental impact of the Degradation of Materials Degradation of all materials, whether naturally occurring or man-made, necessarily produces chemicals as a result of the process.