INTERIM REPORT #27 - Analysis of Groundwater Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LC/MS/MS for the 3M Decatur Monitoring Program DATA REQUIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFR 792 STUDY DIRECTOR Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 INTERIM REPORT COMPLETION DATE February 9, 2007 PERFORMING LABORATORY Exygen Research 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

3M Specialty Materials 3M Center St.

May 1, 2001 CERTIFIED MAIL Document Processing Center (7407) (Attn: Section 8(e) Coordinator) Office of Toxic Substances US Environmental Protection Agency 401 M Street, SW Washington, DC 20460 Re: TSCA 8(e) NOTICE For: Acute Toxicity Honey Bee Studies on Perfluorooctane Sulfonate, potassium salt, CAS# 2795-39-3 Dear Sir: 3M is submitting the results from recent oral and contact acute toxicity tests performed with 1-octanesulfonic acid, l,1.2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-,potassium salt (CAS No. 2795-39-3) - commonly referred to as PFOS - on honey bees.

3M 3M General Offices FYI-00-001378 FV1-00-001378 April 28, 2000 3M Center St.

3M Specialty Materials p - 'f f May 30, 2000 3M Center F a r - o b o o - /St.

F ^ l- / /- /2 7 2 ) i, DuPont Haskell Laboratory for Toxicology and Industrial Medicine Elkton Road, P. 0.

A fL L7> _ ib lf-g 3M Company Page 1 of 63 FINAL REPORT Epidemiology, 220-3W-05 Medical Department 3M Company St.

3M Specialty Materials 3M Center St.

RECEIVED OPPTNCiC 2003 MAR 10 AH II** 5 I Telomer Research Program 1200 South Hayes Street Arlington, Virginia 22202-5050 Tet (703)413-1100 ad.5264 Fax: (703)4136111 M &Q& - I AW Clariant February 14, 2003 Mary F.

Toxicological Summary PFOS Dietary Chronic Pilot Reproductive Study: Mallard Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoropotassium salt, CAS# 2795-39-3 Test Remarks: The test substance is a white powder (3M Lot #217).

Bladder Cancer in Perfluorooctanesulfonyl Fluoride Manufacturing Workers Final Report Bruce H.

CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 Voluntary Use and Exposure Information Profile Perfluorooctanoic Acid and Salts I.

#2 0 ,-/2 4 3 Toxicological Summary PFOS Dietary Acute Northern Bobwhite Study Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS# 2795-39-3 Remarks: The test substance is a white powder (3M lot #217).

A X > 6 'I 8 S ^ Toxicological Summary PFOS Dietary Chronic Definitive Reproductive Study: Northern Bobwhite Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro, potassium salt.

3M 55p Katherine E.