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 24448-09-7 3M Company -fir& & Voluntary Use and Exposure Information Profile N-methyl perfluorooctanesulfonamido ethanol I.

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.

3M Environmental Laboratory Results from Analyses of Soil and Groundwater Samples From the E.

#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.

AR226-1983 I =r .

AR226-2164 Current Permit/Aocflcation/PDF tt 18234 &15D 01SD 1353A Pre-Exisunfl 614A 614A 781 153 2365A Note: For some vents me surfactant rate is less then the total particiiete reported In Air Emissions Inventory which can Include polymer dirsi Note: if emissions ere sen!

Ta~Wei F u 10/11/02 11:57 AM To: Katsunosuke Kitagawa/PO/DuPont@DuPont cc: Hidetaka Hiromatsu/PO/DuPont@DuPont Subject Re: C-8 in the AirD Kitagawa-san, It is rather complicated to explain on paper concerning the C EG issue.

AR226-2358 m DRAFT PHASE II MONITORING/SAMPLING WORK PLAN DUPONT WASHINGTON WORKS SITE WASHINGTON, WEST VIRGINIA Date: March 2004 Project N o.: 507423 18983990.04006 18983992.04006 lig sr A CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 EXP000387 Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Monitoring/Sampling W ork Plan w TABLE OF CONTENTS Table o f Contents 1.0 Introduction 2.0 Background Information 3.0 Air M odeling V erification S tu dy................................................ 3.1 Phase II A ir M onitoring A ctiv ity ..................................... 3.1.1 A ir Sampling Events, Duration and Locations 3.1.2 Number o f S am p les.......................... -.................. 3.1.3 Sampling Equipment, Methods and Schedule. 3.1.4 Analytical M ethods............................................... 3.1.5 M eteorological M onitoring................. ............... 3.1.6 M eteorological D ata............................................ 3.1.7 M odel Selection and M ethodology................... 3.1.8 Receptor S election ............................................... 3.2 Progress Reports and R esu lts............................................ 4.0 Water M onitoring A ctiv ities....................................................................................... 4.1 Private W ater Sources....................................................................... ................ 4.1.1 W est Virginia: GIST Conclusions and Recommendations for W est Virginia Private Water Supply Sources............................... 4.1.2 W est Virginia: Private Water Supply Sources A ctiv ities........... 4.1.3 Ohio: GIST C onclusions and Recommendations for Ohio Private Water Supply S ources..................... ................................... 4.1.4 Ohio: Private W ater Supply Sources A ctivities........................... 4.2 Public W ater S ources.........................................................................-.............. 4.2.1 W est Virginia: GIST Conclusions and Recommendations for W est Virginia Public Water Supply Sources............................... 4.2.2 W est Virginia Public Water Supply Sources A ctiv ities............ 4.2.3 Ohio: GIST Conclusions and Recommendations for Ohio Public W ater Supply S ources.......................................................... 4.2.4 O hio Public W ater Supply Sources A ctivities............................. 4.2.5 Ohio: OEPA Recommended W ell Installation at Little Hocking W ater A ssociation W ell F ield ........................................ 5.0 Surface Water and Groundwater M onitoring..... 6.0 Surface S oil/B iota (V egetation) Sam pling......... 7.0 Schedule and R eporting.......................................... 8.0 R eferences.................................................................. 5 5 5 5 6 6 7 7 8 8 8 .9 .9 .9 10 11 12 13 13 13 14 14 15 EXP000388 2004W orkP lan 4.do c Wilmington, DE Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Monitoring/Sampling W o rt Plan Table o f Contents Table 1 Table 2 Table 3 .

AR226-2373 ENOtNEERWS COMP'JliVfiON ............... ------------------------------- -- . --------------------------- * -- -1 ' .

, FLUOROPOLYMERS SO -7 PAC 30 1^". a f * _ 7- ' r.

AR226-2425 t- A 7 R E V .