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A = Minnesota Pollution CAognetrnocly Contents Contents Table 1 ...................... 2 ther evaluation 3 Further evaluation ..... 3 Celeuling LOS... 3 Calculating LD50 ....... 3 Appingknowiodgo 3 Applying knowledge .. 3 Sufficient knowledge Sufficient knowledge unavalabi.......3 unavailable ............. 3 Publanod momaions Published information 4 Tae?

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" 3M Internal Correspondence To: To: FFrroomm:: SSuubbjjeecctt:: Date: Date: EEHHSS&&RR WWoorrkkiinngg GGrroouupp GGeeoorrjjeeaann AAddaammss EEHHSS&&RR MMiinnuutteess ffoorr AAuugguusstt 1100,, 11999999 AAuugguusstt 3311,, 11999999 AAtttteennddeeeess:: DD..

CCuurrrreenntt CCGG FFCC W Waassttee SSttaattuuss ((222211227722 IIbbss..llyyrr aass ooff 88//22111/0000)) BFC wastLosttothe [] FC Waste Lost to the Sewer 38% TT @[] TTWWraarnssataefefsrforrosfemtmdoePoooPrtuaorntoododufsfeucCCctdtsGGs 13% B[]FFCCvWiassttwe nInncciinneerraatteedd 49% nA by Mr pet ier tn tbc er C3460 Made Available by 3M for Inspection and Copying as Confidential Information: Subject to Protective Order In Palmer v. 3M, No.

mre rk A Mark Ty Simos Gaetz/US-Corporate/ Joy 3M/US ha COENSOS2OPH 08/02/2005 03:26 PM To TodaFasking To Todd Fasking To Se US CorporaASQ Carper Tina M.

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8100/58 HH,eSm Eeo OP ALR ECEeTL4y%TIln--wma-- TE aMhchares Foonho To Lot,trhiver 124 TEpe7% hese monthly So the | t ES ER J pF a EmERr Ey A y p ET t rR i R E CBShey iETte I e hSE TarAelDyi a d, Eh a Te anIdE Ld BOE `that.ofseveral wars ag,w 1beia 4better positionto flacussthisproblemwith B EJ JE Eo AaEin E srRnERteEEaeERSSRrReEerntioeh pFPaeeli te na l1.taeakhppisonif--itee iSh,esl Bob Ah3mess and the writer discussed the problem with F~r.

SSMMMMDD FFCC WWaassttee MMaannaaggeemmeenntt ((CCYY11999988)) CCeottage Grov[ e coCc GCl 112 26,0456 | t15e0 ,8a4s5 |4 71a4t1,e5 8e900 | | i [HH Eenriste acgoe n 1"t 33687a 073388g |e000 0 | s3s 8,738s| 2 -- PCl 0 0 0 [[Sa| f5868a0Ttoy1i0.e0e80n] Safet)/-Kleen 30 880 0 30,880 [wi ses000|7as327|so0.15 WTI 365,094 144,321 509,415 [Fiat Subtotals.77|tao.18s | 720.23 f ee -- |__PPlalnPatlaSnnuttbTTtoootttaaalll 7572260009,,97225375 160,166 [~~---- 720,923 7} Cordova [CGCCGT Cl T733313.1,337711|227766.,550011| e6o0r7e,87722 J [EsEno sco "T 0 707 0 T0 --001 Heritage 0 0 0 I DDeceactatuurr |SSaaffetPyeC-Kltleeyn-|K131i93404e,10,199o9000n| 0 90,090 337722.357755 |505806,,556565| WeTIee a3a0p9a,8z2s5 | s3e9s9,1o9s9| r7o0u9t,0e24s | [PlPalannttSSubutbototataill 865,476 [1,10,08488,,007758]7,19,19133,,555611| [PlaPnlatnt TTootwal i1~s913iv55s1 [CCCGT CI T 2209696,82266|363.5,110077| 3s33a4e,9s3s3 | Em nsco er41o ,676 00 e4e 1,676] |HeHietdtaaggee T= 00 To0 1 o0 | [_P_ CI Pol 157_ ,0451[70 0 & |7i0 1s577.,4 0044555| [E[42s 5.763 t0--e |--ase 700 Safety-Kleen [wnTr [ase s| s moo] VVTI 433,783 372,652 0 416,358 433,783 789 010 | [FartSubtotal7.504387|4stass | 756,147 SMMD |Paim saoml1 Plant Subtotal 1,304,982 451,465 1,756,447 Plant Total 1,756,447 [C CGCo l C75T 7,247 2 "35 32277.,447 5533|2 7.10,04 8844.,062 0955 |28% [EmoTaIr 01eaoe r fous] | [ReriHEeandstgacgoee |38.738 41,676 38,738 | 00 0 | 3543.18767373868 |os8w] | |_PcPClI T 247a ,135 Io m 0 | a2s 4r7i,1a35s|o%| [Set eon| 508.853 | 57.57%| oriz20 | aw] Safety-Kleen 598,853 372 375 971,228 Coon] VVTI 1,047,571 959,878 2,007,449 [SMTol2.71.21 [1s00106 4091| LL [ swwou[ew [ sw| | SMMD Total SMMD % 2,731,215 62% 1,659,706 38% 4,390,921 + Not Above volmes eps 95of4 FCs ws or civ SP 600 * Note: Above volumes represent >95% of all FC-comaining waste for active WSP's (60 of 140 ot WSP with neore FC compat, 140 total WSPs with one or more FC components). 00990/0111/11999999 22775511..00000011 Exhibit 2751 ow_ozr2z1 3M MN02792261

DDEEPPAARRTTMMEENNTT OOFF HHEEAALLTTHH Health Risk Assessment UnHHieteaaElltnthhviBBraaossneemddenGGtuuailiddaaHnenaccleetffhooDriW Wvaiastiteeornr Health Risk Assessment Unit, Environmental 651.201.4899 Health Division 651-201-4899 WWeebb PPuubblliiccaattiioonn DDaattee:: AAuugguusstt 22001177 TTooxxiiccoollooggiiccaall SSuummmmaarryy ffoorr:: PPeerrfflluuoorroobbuuttyyrraattee cCSayAsnS:o: n33y7m75s5-:222P2-e44rfluorobutanoic Acid (PFBA), Perfluorobutyric acid, Heptafluorobutyarcicd Synonyms: Perfluorobutanoic Acid (PFBA), Perfluorobutyric acid, Heptafluorobutyric acid AAccuuttee NNoonn--CCaanncceerr HHeeaalltthh BBaasseedd VVaalluuee ((nnHHBBVVAicu~ee)) == NNoott DDeerriivveedd ((IInnssuuffffiicciieenntt DDaattaa))** a** nW WdhailsehsaaumddeeiesvveeslltooleppammdeyenetntataalltssctutodnydyitsisiaaonvvsaitlaahbailecffaoonrrnPPoFtFBBAbA,e, aaachhhuuimemvaaennd feeqquuioivvaaalolemennnett-dddooassyeee((xHHpEEoDDs)u)rffeoo,rrmmBssastthehede obbnaassissmooefathhneehrrueemffeaerrneennhccaelefddIooesseeof ea33snddtdaaiyymassastssseuttemelaaeeddssyy-s-tssthtetaaaanttdeeyscctsooetnanadddtiyeittsiicotooanntnsseddwwitooioosuunlelsddstbbhseeantoeescstttaaaanbvbnalliiioslsthahbebeledde,awwcTiihthhtieinshvehi=~don9ft-r1o9t-51m5eddraaamyysos.Hn.AeLAAa-LtdsatthshyeeeesppxmrrpeeeosssneeuntnrtetI.itnimBmcaoeesreptthdohereoaniitnnefafdoomrirmnmefaaaottnriiomohnanutmnnieoeacncneerssehssgaaaalrrfry-ydliittfoenogof developmental eects estimate less than steady-state doses is not available.

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-- Pathology and Toxicology RRR COMPANY CONFIDENTIAL Riker Laboratories, Ino, COMPANY CONFIDENTIAL Suid 703505. 0Corer n SP Building St.