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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.

_ o 6rg N-Et FOSE alcohol Teratology - / &- 0^0324 ( 0 H A Z L E T O N LABORATORIES AMERICA, INC. v t < k s N < * a a 4s o . u f t .

AR226-1376 Medido Health Physics Industriai Hygiene Toxicology Medical 0epartment/3M 3M Center St.

AR226-1407 MZSL6 - 1^07 IN THE CIRCUIT COURT OF WOOD COUNTY, WEST VIRGINIA JACKW .

3M Medical Department Study: T-6295.4 Analytical Report: FACT TOX-002 LRN-U2121 Study Title 104-Week Dietary Chronic Toxicity Study with Perfluorooctane Sulfonic Acid Potassium Salt (PFOS T-6295) in Rats (Covance Study No.: 6329-183) Analytical Laboratory Report Title Determination of the Presence and Concentration of Perfluorooctanesulfonate (PFOS) in Liver and Serum Specimens of Crl:CD(SD) IGS BR Rats Exposed to Perfluorooctane Sulfonic Acid Potassium Salt (PFOS T-6295) Data Requirement Not Applicable Author 3M Environmental Laboratory Study Completion Date At signing Performing Laboratories Liver and Serum Analyses 3M Environmental Laboratory Building 2-3E-09, 935 Bush Avenue St.

7 AR226-2028 ji*3g^^^i$g65#4i62.>*.v3vV^RS F C-8 SAMPLING PROJECT PAGE 1 OF 41 SUMMARY OF SPECIAL C-8 SAMPLING PROJECT Jennifer Nichols Environmental Lab LSE 9-16-97 ) zmzm\ BID093252 E ID 093252 C-8 SAMPLING PROJECT PAGE 2 OF 41 TABLE OP CONTENTS PAGE TITLE PAGE................. 1 TABLE OF CONTENTS.................................. 2 INTRODUCTION ........................................ 3 SUMMARY OF AIR MONITORING ............................ 4 SUMMARY OF WIPE SAMPLING ............................. 5 ATTACHMENT 1: AIR SAMPLING RESULTS.................. . 6 SUMMARY OF AIR SAMPLING PATHSFORWARD.................. 24 ATTACHMENT 2: INVESTIGATION OF HVAC UNITS............ 26 ATTACHMENT 3: SURFACE WIPE SAMPLING RESULTS.......... 30 WIPE SAMPLING CONCLUSlONS/PATHSFORWARD....... 36 FIGURE 1: ROOF HVAC SAMPLING LOCATIONS (AIR) ........... 37 FIGURE 2: ROOF SAMPLING LOCATIONS (WIPE) ............. 38 FIGURE 3: PERCENT RECOVERY OF WIPE SAMPLES .... 39 FIGURE 4: AVERAGE VALUES AT ROOF LOCATIONS........... 40 REFERENCES.......................... 41 EID093253 E ID 093253 C-8 SAMPLING PROJECT PAGE 3 OF 41 In response io the Summary of 1995 C-8 Blood Testing (Playtls, 1995) results, and subsequent 1996 Industrial Hygiene Follow-up Report (Playtls, 1996), an extensive sampling campaign for C-8 In air and on surfaces (wipe testing) was conducted In Teflon* areas.

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AR226-2461 J w*.1...

AR226-2789 FOR DU PONT USE ONLY E.

Study Sponsor: Issue Date: Document Reference No.: ATOCHEM 2-Nov-87 98797 AR226-2933 Acute Toxicity to Daphnia Magna Author(s): A.M.

AR226-3388 Evaluation of the Subchronic Toxicity and One-Generation Reproductive Effects of a Fluoroalkylethyl Urethane Polymer G.T.

ENVIRONMENTAL PHYSICAL/CHEMICAL, FATE, EFFECTS AND MONITORING STUDIES Potassium Decafluoro(pentafluoroethyl)cyclohexanesulfonate back to compounds STUDY TITLE Environmental FateandTransport Ready biodegradation of FC-98 (BO D /C O D ) Ready biodegradation of FC-98 (BO D /C O D ) Ecotoxicity Elements 96-H our acute static toxicity to fathead m innow - FC-98 96-H our acute static toxicity to fathead m innow - FC-98 Toxicity to activated sludge - FC-98 LABORATORY OR DATE AUTHOR COMPLETED TYPE 3M Environm ental Lab 3M Environm ental Lab 9/4/72 7/14/77 Robust summary, copy of laboratory data sum m ary Robust summary, copy of laboratory data sum m ary 3M Environm ental Lab 3M Environm ental Lab 3M Environm ental Lab 1/17/75 8/26/77 3/11/80 Robust sum m ary, copies of raw data sheets Robust sum m ary, copies of raw data sheets Robust sum m ary, copies of raw data sheets

RECEIVED OPPTNCIC 20084U6 -3 PH 2' 38 AR Z-Zb - 061S' f U\81uI,J\ *\<!