SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244404 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 02/28/2006 Signature Name: Richard C.

r--- ----------- - Corporate Health Physics Corporate Occupational Medicine Corporate Product Responsibility Corporate Toxicology 3M Medical Department 3M Center, 220-2E-02 PO Box 33220 St.

3M General Offices 3M Center St.

AR226-1030A020A BACK TO MAIN 3M Company Page 1 of 32 FINAL REPORT Epidemiology, 220-3W-05 Medical Department 3M Company ______________________ St.

B A C K TO MAIN ACUTE CONTACT TOXICITY TO TERRESTRIAL INVERTEBRATES (HONEY BEE) TEST SUBSTANCE____________________________________________ Identity: Perfluorooctanesulfonate; may also be referred to as PFO S or FC-95. (1-Octanesulfonicacid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Rem arks field: The 3M production lot number was 217.

BACK TO MAIN ACUTE ORAL TOXICITY TO TERRESTRIAL INVERTEBRATES (HONEY BEE) TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks field: The 3M production lot number was 217.

BACK TO MAIN TOXICITY TO AQUATIC PLANTS (Duckweed, Lemna gibba G3) TEST SUBSTANCE_________________________________ Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample obtained from 3M production lot number 217.

Larry R.

Corporate Health Physics Corporate Occupational Medicine Corporate Product Responsibility Corporate Toxicology 3M Medical Department 3M Center, 220-2E-02 PO Box 33220 St.

3M Environmental Laboratory WX&OX7S Final Report- Analytical Study Single-Dose Dermal Absorption/Toxicity Study of T-6051 and T-6054 in Rabbits In-Vivo Study Reference Number: HWI#6329-133 Study Number: AMDT-013195.1 Test Substance: FC-129 (T-6051 and T-6054) Name and Address of Sponsor: 3M SCD Division 367 Grove Street St.

4R 2.2.G _ n o r 3M Lifetime Drinking Water Health Advisory for Perfluorooctanesulfonate Revision Date: April 19, 2002 Supercedes: July 7,1999 This document establishes a Lifetime Drinking Water Health Advisory (DWHA) o f 4 pg/L (ppb) for perfluorooctanesulfonate (PFOS).

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.