BACK TO MAIN ACUTE ORAL TOXICITY TO TERRESTRIAL INVERTEBRATES (HONEY BEE) TEST SUBSTANCE Identity: Perfluorooctanesulfonate;may also be referredto as PFOS or FC-95. (1-0ctanesulfonic 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 productionlot number was 217.

BACK TO MAIN - 1 - PERFLUOROOCTANESULFONATE AND RELATED FLUOROCHEMICALS IN OYSTER, CRASSOSTREA VIRGINICA, FROM THE GULF OF MEXICO AND CHESAPEAKE BAY John P.

BACK TO MAIN ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity: Perfluorooctanoic acid, tetrabutylammonium salt; may also be referred to as PFOA tetrabutylammonium salt, tetrabutylammonium perfluorooctanoate, N2803-2, or as a major component of L-13492.

BACK TO MAIN VAPOR PRESSURE TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, FC116, FC-126, FC-169, or FC-143.

BACK TO MAIN MULTI-CITY STUDY FIELD REPORT FOR COLUMBUS GEORGIA AND PORT ST.

._.q ,I ] ', i i "1 ,I _ ' i::_] '"_"_I D 'i BIODEGRADATION STUDY REPORT Revision 1 Wednesday, November 06, 2002 Biodegradation Screen Study for Telomer-Type Alcohols PROJECT NUMBER 3M Projects ID: E01-0684 Pace Contract Analytical Projects ID: CA085 STUDY DIRECTOR Cleston C.

Northwest Bioanalytical Study No.

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

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).

PFOS: A REPRODUCTION STUDY WITH THE NORTHERN BOBWHITE FINAL REPORT WILDLIFE INTERNATIONAL, LTD.

Pe orheLLmee Si 12 ~ id feo Hes i be f ie TwDappTNoOrretpo|rt = nay STUDY OFTHEEFFECT OF PERFLUOROBUTANESULFONATE, 5 PEPRERFFLLUUOORROOHOEXCATNAESNUELSFOUNLAFTOEONNASNAODTME | ASPECTS OFCHOLESTEROLMETABOLISH INVITRO, b() 5 h SEe F Pine s - omy = o 3 EE NO_epor_of sFtudyiSWEOn T alverson TNCreport 16042008 | || | PERFSLTUUODRYOBOUFTTAHNEEESFUFLEFCOTNOAFTE, || PERFLUOROHEXANESULFONATE AND | PERFLUOROOCTANESULFONATE ON SOME ASPECTS OF CHOLESTEROL METABOLISM IN VITRO.

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AR226-2019 C-8 REVIEW FEBRUARY 8,1993 EID914280 DIIPONT C-8 USA6E SITE WASHINGTON WORKS DORDRECHTWORKS SHIMIZU CHAMBERSWORKS MISC TOTAL AMOUNT - 1991 IBS 1992 71,100 31,400 67.200 37,950 15,950 14,700 20,000 200 1,050 200 120.650 121,100 DOMNSTRfeAMUSAGE SPRUANCE GLOBAL CUSTOMERS 1,500 10.210 1.400 M/A 2/8/93 EID914281 EMISSION REDUCTION TO THE ENVIRONMENT PERFORMANCEMETRICS GLOBAL POUNDS USED 1990 114.600 POUNDS RECOVERED/ 0 RECYCLED POUNDS DESTROYED POUNDS RELEASED TO ENVIRONMENT 14,500 100,100 % RELEASED TO ENVIRONMENT OF AMOUNT USED 87.4 1991 120,650 7,500 13,300 99,850 82.7 1992 121,100 9.000 15,400 96,700 79.8 2/8/93 EID914282 AIR MONniQMNG TOR WORKER EXPOSURE TO M Wm WASHINGTON ALL JOBS IN FULL COMPLIANCE DORDRECHTWORKS ALL JOBS IN FULL COMPLIANCE SHIMIZU STARTING EMPLOYEE MONITORING 2/8/93 EID914283 COMMUNICATIONS West Virginia DNR & DOH Lubeck Public Service District Customers Employees EID914284 GLOBAL C-8 ISSUES WASHjONTGTQlOBMBKg Fine Powder Drier Recovery Unit Utility Ohio and Delaware Kivers Ground Water Landfill Dordrecht Merwede River ^ landfill / Ground Water m C-8 Recovery Shimtett Sugnra Bay Employee Monitoring Major Customers Awareness of Hazard EID914285

AR226-2190 ^ Debbie J Mulrooney 08/27/2001 02:32 PM To: cc: Subject: Robert FPinchot/DEV/AE/DuPont@DuPont Revised Base Case Rob, Here are the results for the base case with the fine powder dispersion vent at 12,000 acfm Instead of 18,000.

AR226-2545 WTO04587S291 DOPOHT WASHINGTON WORKS RESPONSE TO EPA RFI WORK PLAN NOTICE OF.DEFICIENCY (NQDl_eOMMENTS An MOD lefcfcer dated 1/15/98 concerning the 9/24/97 DuPonfc Washington III Works RFI Werkplan, was received from Region EPA on 1/20/98.