AR2z26 - 1050 SELECTED FLUOROCHEMICALS IN THE DECATUR, ALABAMA AREA 5 om 22 Prepared for: am St.Paul, Minnesota Prepared by Entix, Inc.

Ar226_ 20 Estrous Cycling and Natural Delivery/Litter Observation Data F1Estrous Cycling Data, From Data Analysis Presented at EPA on August 30, 2002 SsA CbreceseD s T24'30 250\09 a55f00 T2i5029 m500 'APFO Dose Group (mg/kg/day) Creletonss Lncdence ofCycle Lengh Per Group PID ":3 r -- s7>7 ---- 5} -- 575 --H75---- w53 5:3 'si:u %: 3?

: AR 236 - 1263 _-- DuDPuoPonnttEEMMSSEERReeppoornttNNoo..1133:-0033 Study Title READY BIODEGRADATION OF 8-2 TELOMER B ALCOHOL (MODIFIED OECD 301D CLoseD BOTTLE TesT) Test Guideline COrhgeamniiczaaltsi;onSefcotrioEnco3:noRmeiacdyanBdioCdoeogpreardaatbiilvtey:Dev30e1loDpmCelnotse(dOEBCotDt)eTGeuisdtel(1i9n9e2)f.or Testing of Author Ning Wang, Ph.D.

i 19 of 30 AR 826 - 1503 C-8 DATA SUMMARY REPORT CONSENT ORDER GWR-2001-019 DuPont Washington Works Facility and Local, Letart And Dry Run Landfills February2003 ProjectNo.T74o23mes Preparedby 18)9 ON NIvInDD QUPORR CORPORATE REMEDIATION GROUP An Alliance between i DuPont and URS Diamond : Barley Mill Plaza, Building 27 00000: # Wilmington, Delaware 19805 3 i OEPA 4053 ary DuPont Engineering February5,2003 Er WestVigini DeparofEtnvmiroenmnenttal Protection Divisionof WaterResources C12h01GarerenlbWreieessrtStVtiroregenitn,ia 25311-1088 tdSeraaee mtnehu IFi "Tre mn FEB - 6 2003 ofic i - oe RE: CCo4nsDeanttaOSrudemrmaGrWyRR-e2p0o0r1t019 DearMi.

ACUTE TOXICITY TO FISH (Sheepshead Minnow) TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic 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: The test substance is a white powder.

< Larry R.

AR 2.2.6 0 6 0 6 RECEIVED n n n t UTtr <SJi> DuPont Haskell Laboratory for Toxicology and Industrial Medicine July 6,2000 Mr.

CHtl EHSR b It D I (55 IVD uy/iy `U ID: 44 N0.59 1/1 3M Specialty M aterials 3M Center SL Paul.

fiiR 2.2.G - U S!

A P 8.Q.G IAVST RECEIVED BPPT CBtC DuPont Fluoroproducts Chestnut Run Plaza P O.

ENCLOSURE 4 Description of the 3M Decatur Inactive Landfill Containment Structure At the 3M Decatur site, a RCRA interim remedial measures (IRM) program is currently underway to construct a containment structure for an inactive landfill.

Larry R.

REPORT Study Title ASSESSMENT OF ACUTE ORAL TOXICITY WITH T-7868 IN THE RAT (ACUTE TOXIC CLASS METHOD) Author Drs.

Toxicological Summary PFOS Dietary Chronic Pilot Reproductive Study: Northern Bobwhite Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-potassium salt.

AR226-2205 i?