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SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 239580 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: 09/02/2005 Signature Name: Richard C.

07A f L Z Z G - S/ TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

A fL A Z G ACUTE TOXICITY TO FISH (GOLDEN ORFE) TEST SUBSTANCE____________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-603EF. (1Octanesulfonic acid) (CAS # 2795-39-3).

A < S .S l.6 March 21, 2003 To: Mary F.

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AR226-1519 30 September 2003 To: 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.

\ j m m s O N MUJir V: <>[ 1 1 in M \s ji :1II;m >' D aniel Bough Institute o f Anatomy Department o f Anatomy O ffiee o f the D irector and Chairman m : )| I I .J R E C E IV E D NOV 2 l- 1332 3 v<l TOXICOLO Philadelphia, 19107 (215) 928-7820 November 19, 1982 Dr.

3M GLP10-01-02; Interim Report 10 Analysis for PFBS, PFHS, and PFOS in Groundwater from Decatur, AL October 2010 GLP10-01-02.

3 GLP10-01-02 Interim Report 25: Analysis of PFOS, PFHS and PFBS in Sediments Collected from the Jeffries Property Study Title 3M Environmental Laboratory Analytical Protocol GLP10-01-02: Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sediment for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way W est Chester, PA 19380 Phone: 610-701-3761 Principal Analytical Investigator Cleston C.

INTERIM REPORT #3 - Analysis of Fish and Clam Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, and Clams 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 June 17, 2008 TESTING FACILITY MPI Research, Inc. 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

/IR33S-OIS6 28 Day Percutaneous Absorption Study with FC-99 in Albino Rabbits Experiment No Conducted At: Dates Conducted: Conducted By: 0979AB0633 Safety Evaluation Laboratory Riker Laboratories, Inc.

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Attachments to Letter to C.