Document yrZNbBv0DYb2Eadnvy4KJVrjV

AR226- 1509 SAMPLING INVESTIGATION RESULTS LITTLE HOCKING WATER ASSOCIATION WELL FIELD WASHINGTON COUNTY, OHIO Date: April 2003 Project No. 7482 18983762.00010 am CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 000438 CONTAIN NO CBI 'WVDEP 17571 ! SeSammppginugwIeessttgabtoionnfReonuttee TaTabblleeooffCCoonntteennttss TABLE OF CONTENTS EXCCUNVESUMMA onsetsi 10 INMEOUCHON cs ttsesnsmmnsne] 2.0 2E1QVGEIOTOBOY Nr SEMUENGNas ] w srt 3 3.0 SAMPHNG APPIOBCH wt 40 GroUSNAMPAICWREaSUtSe..r. 4.1 42 CC-88iinn GGrroouuffnrnroommddPTreomwwdpuocaartiaorttnyaBenOeMdTNrreEsSt W.e.ll.s...........................oooo.ooo6 4.3 Groundwater Elevations in Production and Test Wells and Ohio River , 5.0 SOil SAMPIE RESUS ttn 6.0. Site CONCEPMIOUAl 6.1 GEOOGY css 10 10 | 6:2 63 HCY-U8ITOrBaEnOsIp0orGtYo Mechanismr sand Migrc ation sPathWays...................o.1l 0 7.0 ConcanldREuCOsMMEiNMoBONnS s ccc BO REFETENOES css 1 Table 1 Table 2 Table 3 Table 4 TABLES C-8 in Groundwater from Temporary Borings C8 in Production and Test Wells Groundwater 2002 Elevation Data for Production and Test Wells August 21, C8 in Soil from Temporary Borings WLiniSnigoipono,t OAFgr. 17.03 000439 i ! Sampling Investnion Rout Table of Contents FIGURES Figuel Site Location Map Figure2 Production and Test Well Locations Figure C-8 in Groundwater - January 2002 Figured Idealized Ohio River Valley Cross-Section and Block Diagram FigureS Generalized Geologic Cross-Section at River Mile 190 Figure6 Temporary Boring Locations Figure7 ~~ C-8 Concentration Ranges in Groundwater Figure8 Groundwater Elevation Contour Map -- August 2002 Figure9 C-8 Concentration Ranges in Soil Figure 10 Cross-section Location Map Figure 11 Cross-section A-A' Figure 12 Cross-section B-B' | Figure 13 Cross-section C-C* APPENDICES | Appendix A C-8 Analytical Reporting Appendix B_ Geologic Logs for Little Temporary Borings Hocking Water Association Well Field Appendix C Geologic Logs for Production and Test Wells (Provided by Little Hocking) iWimoogtnon, OpF ero 000440 Tw Sampling Investation Rests Executive Summary EXECUTIVE SUMMARY DuPont conducted a field investigationofthe Little Hocking Water Assocation well field iinn sAouigluasntd2g0r0o2unidnwoartdeerrnteoadrelaitneesattweeallm,mToWn-i4u.mGpreorfulnudowraotocetrasnoaamtpele(Cd-f8r)ocmonTcWen-t4raitnions 2002 showed a C-8 concentration range of 12.3 10 37.1 ug/L. This report summarizes the `work performed, presents results, and provides conclusions and recommendations. RDeecpeanrttlmye,nptusrosfuEannvtitrooanmmeunlttia-lmePdrioateccotnisonenatnodrHdeearlitshsuaenddbHyutmheanWeRsetsoVuirrcgeisnitao DuPont osunbNmiotvteemdbseurmm15a,r2y00re1po(rOtrsdteortNhoe.OhGiWoR-E2nv0i0r1o-n0m1en9t;alCoPnrsoetnecttOirodneAr)g,enDcuyPodnettaihlaidng the off-site investigation activities near the Washington Works facility. These reports aaisrseesmsiesdsimoendsiai-sstpheeciofnilcyCp-robtarbalnesptorratnsfproormt mtheechfaacniliistmy afnodr Cc-o8ncflouudnedd itnhatthemiLgirtatlteion of Hocking Water Association well field. Tdehleinfeiaetlidnigndveespttihg-astpieocnioffitchCe-8LictotnlceeHnotrcaktiinognsWiantesorilAsasnodcigartoiuonndwwealtlerfineeladrfTocWu-s4e.d on Cinonocrudrerrentotldye,veadldoiptiaonsiatlegceoonpcrepotbueablomriondgesl, tfeosrtdweeplolssitainodnparnoddumcitgiroantiwoenllosfwCe-r8eisnasmopilled | and groundwater at the Little Hocking Water Association well field. The following conclusions are drawn from the investigation results and other available data: Q All groundwater results are below the C-8 Assessmentof Toxicity Team (CATT) established human WVDEP 2002) of health protective 150 ug/L. screening criteria for water (water C-8 SL; Q The C-8 concentrations in groundwater decreased with depth within the aquifer. `clTahye,Cr-a8ngceodncfernotrmaNtiDon(s<i0n.0g1rouugn/dLw)attoer78atutgh/eL,towpohiflethCe-8aqcuiofnecre,ntwriatthiionnsthaet stihlety botiomofthe aquifer, within the sand and 8.58 ug/L (excluding results for TW-4). gravel, ranged from ND (<0.01 ug/L) to Q Consistently high pH values measured in TW-4 and other field observations ifanidliecdatgerotuhattstehailsotresttowaelfalislecdownesltlruccatsiionng.is Hliikgehleyrccoomnpcreonmtirsateido,nspoosfsiCb-l8ymdeuaestuoread inthis well (ranging from 12.3 10 37.1 ug/L) are likely attributed to shallow groundwater that contains higher C-8 concentrations deeper monitoring zone or into the well itself, which migrating downward into could happenif the grout the seal or the well casing were 10 have failed. C-8 concentrations measured in this well are not likely to be truly representativeof the deep aquifer. Q Drinking water is pumped from the bottom of the sand and gravel aquifer through the four production wells. `production wells was 8.58 The highest C-8 concentration measured ug/L, significantly lower than the human in the health four protective water C-8 SL. The C-8 results for finished water, a combination of WiLmSiinegpioornt,OAFpr 17.05 000441 [0 `Sampling Investigation Results Executive Summary wraatnegresd ffrroomm t1h.e69pr1o0d4u.c2t9ioung/wLe,llaslstohastigisnidfiisctarnitbluyteldowteorLitthtalne tHhoecwkaitnegrcCu-s8toSmLe.rs, Q sAcllreseoniilnrgescurlittserairaefobreslooiwl t(shoeilCACT-T8-SesLt)aobfl2i4sh0edmgh/ukmga(nWhVeaDltEhPpr2o0t0e2c)t.ivTehe highest soil C-8 concentration measured is 170 ug/kg (0.170 mg/ke). Most results for soil sampled below the water table are nondetectable. Q Overall, the very low concentrationsofC- measured in the soils indicate that C- does not readily adsorb to soil, especially soils below the water table. Q nCo8t driesstuilntgsufiosrhstohiilsatnesdt gwrelolunadswaatseorurscaempfolrehdiigmhmeerdCi-a8tecloyncaednjtarcaetnitontos TinWs-oi4l daond `groundwater. Q Overall, this investigation as completed, combined with the air emission modeling aarnedsgurffoiucnidewntatteorunmdoedresltianngdrtehseulmtisgarnatditohnepaavtahiwlaabylseofpChy-s8iocfhreommicthael WdaatsahifnorgtCo-n8, Works facility and within the Little Hocking Water Association well field. | Q Revised groundwater modeling by DuPont supports the previous conclusion that | no potential groundwater migration pathway exists beneath the Ohio River to the Little Hocking Well field. Q eBxaisste.d Co-n8thferocmurtrheentDduaPtoanatvafialcaiblliet,y DisutProannstpobretleidevveisatahier feomlilsoswiionngspbaytwhiwnady daonedsis | tdheepoCs-i8teddoownnwthaerdLittthlreoHuogchktihneguwneslaltufriaetleddszurofnaecetosotihlse.aqPuirfeecri.pitDaitsisoonltvheednCl-eaches then migrates with groundwater within the aquifer. Groundwater containing low lWeavteelsroffroCm-8thies tphroednupcutimopnedwelflrsoimstmhiexaeqduiafnerdtthhreofuignhisthheedfwoautrepr,rocdouncttaiionninwgelelsv.en Tower levels of C-8, then enters the Little Hocking Water Association distribution system. Q T`mhiigsraitnivoenstpiagtahtiwoanysaswciotmhpinlettheed,LitctolmebHioncekdinwgitwheltlhefioevledr,ailslaulnsdoesrusftfaincdieinntgtoofC- uprnoddeurcsttiaonnd wtehleldsisatnrdibiuntitohneoffinCi-s8heidnwtahteetrestthawtelelnst,erisnctlheudLiintgtlTeWH-o4c,kiinngthe, distribution system. Q In order to assess the impactofrecent C-8 air emission reductions at the oWfasCh-i8nigntothneWfoorurksLitftalceilHitoyc, kDiunPgonWattreercAosmsmoecinadtsiocnonptrionduuicntgioqnuawretlelrslyamnodnifitnoirsihnegd water for a periodoftwo years. WiHmSaigeipoonr,tOAFpe 17.03 0004- 42 Ww SriSaomgpliinngeisntveosatattoironRReesssultss IInnttrroodduuccttiioonn 1.0 INTRODUCTION P(uOrrsduearnNtot.o tGhWeRm-u2l0t0i-1m-e0d1i9a;coCnosnesnetntorOdredreri)s,sugerdotuonDdwuaPtoenrtwoansNsoavmeplmebderat1p5u,b2l0i0c1water ssaupmppllieeds t(oPdWeSt)eramlionnegifthreelOehaisoesRoifveCr-8infWreosmtthVeirDguinPioantanWdaOshhiion.gtGornouWnodrwkastefarciwlaitsy P(lWocSatseadmipnlWiansghwiansgtpoenr,foWremsetdVuinrgdienriat)hehdaivreecitmipoanocfttedhegrGoruonudnwdawtaetreirn ItnhveesPtWiSg.atioTnhe HStoecekriinngg TWeataemr(AGsIsSoTc)iawthiionchwewlalsfieesltda,blloicsahteedduancdreorssthteheCoOnhsieontRiOvredrerf.roTmhteheLittle `WTahsehlioncgattioonnsWoofrtkhse fLaictitllietyHoinckWianshgiWnagtteornACsosuonctiya,tiOohniow,elwlafsieilndcalnuddetdheinDtuhPiosnstampling. `Washington Works facility are shown in Figure 1. tFhoruorupgrho4d)ucwteiroenswaemllpsleadt tihneDLeitctelmebHeorck2i0n01g.WaTtheerCA-s8soccoinacteinotnrawteilolnsfimeleda(suLrHePdSiDn1the Cpr-o8duincttihoenLwitetlllesHroacnkgiendgfwreolml0i.e8l4d4, 1a0m7o.r6e6 euxgt/eL.nsiTvoe bseatmtpelriunngdeervsetnatnwdatshecodinsdturcitbuetdioinn of | cJuasntuoamreyr2s0)0a2n,dthbaotositnecrlusdteadtitohnessaammpplliinnggopofinftisn,isahnedd water (the water distributed to groundwater from all production and LteistttlweeHllosckinintghewewlelllfifeielldd.areThseholwoncaitnioFnisogufrteh2e. production and test wells sampled in the. | fArotomtaLliotftl1e9HogcrkoiunngdwdautreirngsatmhpelJeasn,uianrcyl2u0di0n2gsoanmeplduipnlgiceavteen,t.weTrheecoclolneccetnetdraatnidonasnaolfyCz-e8d Cin8ficnoinscheendtwraattieornasnmdebaosousrteedr sftoarttihoen psraomdpulcitnigopnowienltlssrraannggeeddffrroomm10..6794140t10.69.42u2gu/gL./L.The 4`T(heTWC--48),retsuhletscofnocrennitrnaeotifonthmeetaesnutreesdt wwealsls37r.a1nguegd/Lf.roFmig0u.r3e643 tsoh4o.w4s8tuhge/LJ.anuInartyes2t0w0e2ll TdiWst-r4ibcutoimopnoarfeCd-t8ortehseulstusrirnoutnhdeipnrgodwuelcltsi,onthaenOdhtieostEwnevllisr.onBmeansteadloPnrottheecctlieovnatAegdenrecsyult at (OEPA) requested that DuPont conduct a focused concentrations in soil and groundwater near TW-4. field investigation to delineate C- AInssAoucgiuastito2n0w0e2l,lDfuiePlod.ntDcuornidnugcttheids tinhveefsiteilgdatiinovne,sttihgeatfioolnloawtitnhgeaLcittitvlietiHeoscwkeirneg Water performed: Q Advanced ten temporary soil borings 9 Continuously monitored temporary borings geologic information during the advancementof the ten Q Sampled soil depths within and the groundwater and monitored temporary borings groundwater parameters at various ee or or. 08 ~ 000443 ! SmoSaimgplliongvIenvsesttoigaatoionnRReessuwtss IInnttrroodduuccttiioonn Q Sampled groundwater elevations in all production and test wells and recorded groundwater Q Measured Ohio River stage : `The C-8 Consent Assessment of Order to establ Tox ish icity Team (CATT), human health protect was assembled ive screening cr as ite re ria quir for ed wa by ter the (water C- c8oSnLd)ucatnedd faotrLsiotitlle(sHooiclkCi-n8g,SLt)h.e CInAATuTguisstsu2e0d0i2t,s fwihnialleretphoerftiaelnddiensvteasbtliigsahteidonthweaswabteeirng. C-8 SL at 150 ug/L and the soil C-8 SL at 240 mg/kg (WVDEP, 2002). wFoelrleoawnianlgyztheedctoommpelaestuiroen Cof-8thceonfcieelndtraacttiivointsi.esCa-t8LiatntalleyHtoiccaklinregs,ulgtrsofuonrdgwraotuenrdswaamtpelres awnearleyttihcaeln mceotmhpoadrefdortometahseuCrAiTnTg-eCs-taibnlisosihlesdwwaastestrilCl-u8ndSeLr. deInveAluogpumsetnt2;00t2h,eraefnore, soils dseavmeplloepdmdeunrtinwgasthceoimnpvleesttiegdatiinonFewberruearpyla2c0e0d3.onC-h-o8ldanainlyatisceaclurreesumlatnsnfeorr.soTilhsewmeertehod efsitnaalbilziesdheidn sMoailrcCh-820S0L3.. TCh-e8aannaallyyttiiccaallrreessuullttsswfeorresotihlewneervealtuhaetnedcoimnpcaornejudntcotitohne wCiAtThT- ogbetolaoigniecd dfartoamatvhaeiltaebmlpeofrraormy bLiotrtilnegHs.ocAkisnigteWcaotnecrepAtsusaolcimaotdieoln waands wtihtehn gdeeovleolgoipceadl.data i`Tnhviesstriegpaotritond.ocIunmtehnitssretphoertf,ietlhdeifnovlelsotiwgiantgiosnecatcitoinvsitairees adinsdcutshseedr:esultsof the | Q Environmental Setting (Section 2) Q Sampling Approach (Section 3) Q Groundwater Results (Section 4) Q Soil Sample Results (Section 5) Q The Little Hocking Site Conceptual Model (Section 6) Q Conclusions and Recommendations (Section 7) Q References (Section 8) WLiinSitgeipoonn,t OAFpr 17.03 000444 2 .| Samping stanton Rasuts Re EnEvnivriornonmmeennttaallSeSettttiinng g 2.0 ENVIRONMENTAL SETTING 21 Geology `TQhueatLietmtalreyHoalclkuivinagl wseeldlimfeienltdsitshlaotcoavteerdliyntthheePOehrimoiaRni-vaegreVdalDluenykaanrdd Gcronosuips.tsTohfe two ipnrcelduodmeincoaanrtsef-agcreasinoefdtOhehiOohiRoivReirveArllaulvliuuvmiu(mPltheaitsthoacveeneb-eaegnedidgelnatciifaileoduitnwtahsihs rdecpaosits) `aTnhde fPilneei-sgtroacienneeddOehpiosoitRsivceornsAilstlupvriimuamri[lHyoloofcceonaersoev-egrrbaainnekddseapnosdiatsnd(Sgirmaavredl,wh1i9l8e9)t.he gHroalionceednseandde.posTihtes DcounnskisatrdprGirmaoruiply(bofeidnrtoecrkb)ecdodnesdistasndprliammairnialtyoefdrseild, calnadyvaanrdicfoilnoer-ed sbeadnsdoyfschoalael;,gcrlaayy,stgorneee,nbalnadckbcraorwbnonsaacnedostuosnseh;aglreaaynadndlilmiegshtto-nger.ay siltstone; and minor Trehtereaftascoiefsothf tphree-O,heiaorlRyi-vaenrdAllaltuev-iWuimscfoonrsmienadninanrdeswpeornesedeopotshietegdlaacsiasluacdcvesasnicveespahnadses oPflaeigsgtroacdeanteiaolnlaunvdiudmegwraasdadteipoonsiotfreidvaesrgvlaaclilaely oalultuwvaiaslhmdauterriinaglst.heTphreimcaorayrsvea-lglreayined | | aDgugrriandgattihoenseuvbesnetqufeonltlodweignrgedtahteigolnacainadl asgcgoruardiantgoiofnthcyeclveaslloefty hinetoPlteheisbteodcreonc,ktfhleoogrl.acial outwash sediments were partially removed, re-worked and then redposited toa lower Pelleeviasttioocnenteh-aangetdhetperrreavcieoussurcfyacclees,wtihtuhsinfotrhmeiOnhgiaotReirvaecer.VaTlhleiys.prTohceessse fsuorrfmaecdesawseerriees of ddeegsriegdnaattieodn(/aygogurnagdeastti0onoclydcelset,)aadsdi$t4i,onSa5l, fainndesSw6erbey Siinmcaorrpdo.raWtiedthinctaocthhesuPblseeiqsutoecnetne OdehpioosiRtisvedru.e Atosaconrteisunluta,ltihneflPulxeoifstfoicneenre-gdreapoisnietdsfbluevciaolmseedmiomreenthsigfhrloymretr-iwbourtakreidcsaonfdthe dproowgnrsetssrievaemlyoffsiingenri-fgircaainnetdttriobwuatarrdietshe(Sciemnatredro,f1t9h8e9)r.ivTerhevatlolteayl,tphairctkinceulsasorlfy Pinleliosctaotcieonnes LsietdliemeHnotcskaitnWgaisnhWiengsttoVnirBgoitntiao)mr(alnogceastefdriommmaebdoiuatte8l0yfseocuttbheanceraotshstthheehOihghieostRiver from RPilveeirs.tocene terrace surfaces to about 15 fect beneath the current channelof the Ohio TThhee iPllesi,stcloacyesn,eaanllduvfiianle dseapnodssiwtesarreedoevpeorsliatiendboyntthheefsiunref-agcreoafintehdeHoPlleoicsetnoecesneeditmeernratcse.s aRsivweerllVaalsloeny dausreirnigestohfe Hmoolroecerneec.entTfhleootdhpilcakinness,swohftichhefHoorlmoecdenien tsheedicemnetnetrsotfyptihcealOlhyio Hraonlgoecsenferofmlo$o1dp0la1i5ns.feetSoimvarrdthdeesPileginsattoecdetnheetHeorlaocceesnuerffalcoeosdaplnadin25sutrofa3c5esfeaest So1vetrhtrhoeugh (51398a9n)d, tiheamboldoecrkndifalgoordapmlaainndoiftdehaeliOzhediocrRoisvse-sreacstiSo0n. thFrioguugrhe t4,hemOodhiifoieRdivferrovmalSliemyard depicting formed in the the cvoalmlpely.ex set of Pleistocene terraces and Holocene floodplains which have Tistepon 750 7.08 Wimington,DE. 3 000445 i `Sampling Investigation Results Environmental Setting A generalized north-south cross-section from the Little Hocking Water Association well pfireelsdeninteOdhiion,Fitghurroeug5h. tThheiOshciroosRsi-vseecrtaionndsahcroowssstthhee fWlaosohdiplnagitnoannWdotrerkrsacfeacsiulritfya,ceiss, the Holocene silt and clay overbank deposits overlying the Pleistocene sand and gravel "oTuhtewaalslhuvdieaplotseirtascaenddetphoesirtes-awroerkuenddePrlleaiisntbocyeaneflaal,lurvivieurm-sicnotuhreedcebnetderroocfktshuerrfiavceerovfaltlheey. DHoucnkkianrgd GWartoeurp Atshsatocriiastesiosnteaenpdlytoantdhefsoorumtshtohfe tvhaellWeayswhailnlgsttoonthWeorNokrsthfacoifliLtiytt(lFeigure 1). 22 Hydrogeology Groundwater supplies in the region are obtained from the Dunkard Group bedrock and Ohio River alluvial terrace deposits. However, the saturated portion of the Ohio River palulrupvoisaelst.erPrracoedudcetpioosnitwseclolsmpcroimspelettheedpriinnctihpisalaqrueigfieornahlaavqeubifeeernuksnedowfnortwoaytieerldsuupppltoy 500 gallons per minute (Schultz, 1984). Based on these high yields, numerous industrial and commercial water supply companies obtain water from the alluvial aquifer. "The Ohio River Alluvial Aquifer is the primary water-table aquifer in the area. This aquifer occurs at a depth of 15 to 30 feet below ground surface in the Little Hocking well | field. The saturated zone is approximately 30 to 40 feet thick, extending approximately to the surfaceof the underlying Dunkard Group bedrock. Numerous pumping tests have been completed in the alluvial aquifer in the Washington Bottom area as part of water | supply investigations. The hydraulic conductivity of the alluvial aquifer in the area typically ranges from 100 to 300 ft/d (Legggette, Brashears & Graham, Inc., 1986; Burgess & Niple Ltd., 1988). In contrast, the hydraulic conductivityof the underlying D20u0n1k)ard Group bedrock aquifer is typically between 0.05 and S ft./d (Kozar and Mathes, Natural recharge to the alluvial aquifer comes from various sources, including: Q Infiltration of precipitation falling directly on the alluvium Q Lateral movementof the river water through the alluvium Q Seepage from stream tributaries that discharge to the Ohio River Q Surfacerun-offfrom the outcrop areas of the Dunkard Group, which form steep slopes adjacent to the uppermost Pleistocene terrace. meTemeget m o0o0o0a4s4e6 * | `Somping investgaion Resuts Sampling Approach 3.0 SAMPLING APPROACH fInocoursdeedr stoamepvlailnugataeptphreoealcehvatthaetddCe-l8inceoantceednthroraitzioonntsalilnyTaWn-d4,verDtuiPcaolnlty tihmepCl-emented a `concentrations in groundwater assistance from the OEPA and near was this test well. This sampling plan was developed submitted to and approved by the OEPA in early with August 2002 (DuPont, in Figure 5. TW-4 was 20024). used as The locations of the center point, temporary borings advanced are shown and six radial sampling segments were seositlabalnidshgerdonuonrdtwha,tneorrtohreaosntl,ysgorutohuenadswta,tseorutwhe,rweessta,mpalneddnforrtohmwetshte. teAmlpoonrgarcyacbohrisneggsm.ent, Fsiagmuprleed5 asnhdowtshethleoclaotciaotnisoonsfotfhetheeigthtwobobroirnignsgswhwehreereonsloiylgarnodungdrwoautnedrwawtaesrswaemrpeled. In two borings where soil following depths from and groundwater ground surface. were sampled, sampling was planned at the a soil atthe surface ataquSi-ffeorot(aipnpterrovxailmsabteellyow30grfoeeutndbesluorwfagcreatdoe)the top of the sand and gravel * at 5-foot intervals from the the aquifer (estimated at SO top of t0 55 the feet sand and gravel below grade) aquifer to the bottom of | a Graotutndhweatgeerologic interfaces * atat 5fi-rfsotoetnicnotuenrtvealrsedfrwaotmerfi(rastppernocoxuinmtaetreeldyg1r7outnod2w0atfeeerttboetlhoewbgortatdoem) of the atstanhdeagnedolgorgaviecliantqeuriffaecres(estimated at 50 to 55 fect below grade). Adetpatlhls,otahtefrirtsetmepnocroaurnytebroerdinwgatleocra(tiaopnpsr,ogxrimoautnedlwyat1e7rtsoa2m0plfienetg was planned below grade) at two. and at the. bottomof the sand and gravel aquifer (estimated at 50 to 5 feet below grade). Iwnhiadcdhitiinocnl,udDeusPsoanmtplsicnhgedtuhleedfotuhrepCroondsuectnitonOrwdeelrl-sreaqnudirTeWd-34Q0at2LPitWtlSe Hsoacmkpilnign,gteovent, csoaimnpcliidnegwpiotihnttsheinfitehledqiunavretsetrilgyatPioWn.S TshamepLliitntgl,e Hwoecrkeisnagmptelsetdwealslsp,artthoatfatrhee nfoitelrdequired Ginrvoeusntidgwaattioenr, eilnecvlautdiionngs TwWer-e1mteharsouurgehdTiWn -t6he atnedst TaWn-d 9prtohdruocutgihonTwWe-l1ls2p(rFioirgutroes2a).mpling the wells. Polymers Ohio River stage was also measured property, located immediately east of using the the Little datum located Hocking well on the Kraton field, with the assistanceof a Senior Environmental Engineer from Kraton. UWiiSmiioopgoornt, 0A8r 17.03 ~ -- --00045 47 SeSnamppllignigoIvnveesstiigoatuioennRReseusltsss GrGroouunnddwwaatteerr SSaammppllee RReessuullttss 4.0 GROUNDWATER SAMPLE RESULTS For groundwater sampled from production wells, test wells and the temporary borings, sampling was conducted as described in the Quality Assurance Project Plan (DuPont 2002b) and in the Sampling Investigation Plan for Little Hocking Water Association Well Field (DuPont, 2002a). Appendix A provides information on C-8 analytical reporting. 4.1 C-8in Groundwater from TemporaryBorings Groundwater sampled at various depths from the ten temporary borings was analyzed for C-8. Table 1 sample name presents the indicates the C-8 results for the investigation and groundwater samples. The the sample type (WWO-G; first part of Washington the `Works, Ohio, groundwater). The second partof the sample name indicates from which temporary boring the sample was collected (i.e. LHWANTI is boring LHWAN-1; see dFeipgtuhrb6eelfoorw tgermopuonrdarsyurbfoarcienfgrloomcawthioincsh).thTehgerothuinrddwpaatretrowfatshessaammplpelde.naFimgeuriend7icsahtoeswsthe the range in C-8 concentrations measured in eachofthe temporary borings. In total, 18 samples (including one duplicate sample) were collected from the ten temporary borings (Table 1). Samples of first water encountered were collected from all ten borings. Samples from greater depths were collected from three borings. At the fbiorrstinwgatcelroseenstcotuonTtWer-e4d,tLo HthWeAbSoWtt-o1mo,fstahmeplseasnwdearnedcoglrlaeveclteadqueivfeerr.y five fect from Note, not all the `planned sampling was completed. The field investigation proceeded slower than expected due to changing field conditions (stabilization of field parameters, particularly ctuornbsiudlittayn,t.tooAksmauccohnsleoqnugeenrcteh,annoatntalilcigpraotuedn)dwaantderinatenrdruspotilisontsarbgyettehde oversight in the work plan were sampled. The C-8 concentrations measured in the groundwater sampled from temporary borings ranged from non-detectable (<0.01 ug/L; ND) to 78 ug/L and do not exceed the CATT- established human concentrations are health higher protective at the first water water C-8 SL of 150 ug/L. encountered than at In general, C-8 greater depths within the aquifer or at the bottomof the aquifer. The distributionof C-8 vertically and horizontally within the well field is discussed in detail in Section 6 which presents the site conceptual `model for C-8 in soil and groundwater at Little Hocking. 4.2 C-8in Groundwater from Production and Test Wells Table 2 presents the PWS sampling C-8 results for the Little Hocking Water Association. The data from the for the well field investigation conducted in August 2002, four production wells and all ten test wells are highlighted including the data in blue. At the bottom of Table 2 are data from finished water and booster station sampling points. `These are samplesof the water that is being distributed to Little Hocking Water Association customers. Finished water was. inadvertently not sampled during the well D Wimngon. OF emer 000s 448 `Somping Investgaton Resuts Groundwater Sample Results field sampling. Table 2 also provides data from the 4Q02 and the 1Q03 PWS sampling events in which the four production wells, TW-4 and finished water were sampled. During the well sampling and PWS sampling, allofthe C-8 concentrations measured in the production and test wells and in the finished water were well below the water C-8 SL of 150 ug/L that was established by the CATT (WVDEP, 2002). Figure 7 shows the rangeof C-8 measured at each production and test well using all the data for each well summarized in Table 2. The highest concentration of C-8 measured in a production or test well, excluding TW-4, was 8.58 ug/L. C8 concentrations measured in TW-4, which was the focusofthis investigation, have been variable. The C-8 concentration in this test well has ranged from 12.3 to 37.1 ug/L. `These levels are higher than in any other test or production well in the Little Hocking well field. However, field and laboratory measurements and field observations, discussed below, suggest that the integrityofthis test well is compromised. `Table 2 providesthe pH dataforthe groundwater sampled collected from the production and test wells. The pH measured for all production and test wells, except for TW-4, has ranged from 6.72 to 7.94. However, the pH values measured in TW-4 are much higher, and have ranged from 9.22 to 12.61. High pH values are commonly associated with cement-bentonite grout (Colangelo et al. 1986). Bentonite, which is commonly used as grouting material in well construction, is a clay mineral containing calcium, aluminum and iron. A comparison ofgroundwater analytical results between TW-4 and Well #2, oneof the four production wells, also shows that TW-4 has approximately twice as much calcium and three times as much iron and aluminum than Well #2 (OEPA, 2002). Field activities show thata three-inch pump that fits in the upper portionofthe belowsurface PVC pipe of TW-4, gets stuck in the PVC pipe at depth. The one and one halfinch pump, on the other hand, can be lowered to the bottom of the well. This observation indicates that the PVC pipe is not completely straight. A bent PVC pipe may indicate a problem with the joint between lengthsof PVC pipe that could allow grout contamination into the well. Furthermore, particlesof a crusty, white material, which may be grout, are frequently found on the pump when it is removed from the well. In addition, water from TW-4 also is frequently a milky to grayish color. `The consistently high pH values, water chemistry, and other field observations from this well likely indicate the integrity of the well is compromised, most likely by a failed grout seal ora failed well casing related to the bend in the PVC pipe. A failed grout seal or a failed well casing would allow shallow groundwater, which contains higher concentrationsofC-8, to migrate into the deeper monitoring zone and would result in unusually high C-8 concentrations in the test well compared to C-8 concentrations `measured in other production and test wells. Becauseofthe compromised integrity of TW-4, itis likely that samplesofgroundwater from this well are not representative of typical conditions within the deeper portions of the sand and gravel aquifer. iWismiinegpioonn, OAFgr 17.03 0004497 Samping nvestioaion Resuts Groundwater Sample Results `The distributionof C-8 in the production and test wells in the Little Hocking well field is discussed in detail in Section 6, which presents the site conceptual model for C-8 in soil and groundwater in the Little Hocking Water Association well field. 4.3 Groundwater Elevations in Production and Test Wells and Ohio River Stage Groundwater elevations were measured in all production and test wells sampled in the Little Hocking well field. In addition, the Ohio River stage was measured. Table 3 provides the surveyed measuring point elevationsofthe production and test wells, the depths to water measured and the calculated groundwater elevations. The Ohio River stageisalso presented in this table. Figure 8 presents the groundwater elevation contour mapofthe Little Hocking well field for August 21, 2002. The pumping of the production wells results in the development of a coneofdepression surrounding the production wells with groundwater flowing towards. the production wells from all directions. Because the four production wells are cycled on and off, the cone of depression shifts its position depending on which production wells that are pumping at the time. Groundwater elevations and flow directions within the Little Hocking well field aquifer are discussed in more detail in Section 6, which presents the site conceptual model for C-8 in soil and groundwater at the Little Hocking well field. i TiSiopor Agr 17.03 `Wiminglon, DE s 000450 `Sampling Inestgaton Rosuts Soll Sample Results 5.0 SOIL SAMPLE RESULTS For soil sampled from the temporary borings, sampling was conducted as described in the `Sampling Investigation Plan (DuPont, 2002b). In total, 22 soil samples, including one duplicate sample, were collected from two temporary borings, LHWASW-1 and LHWANW-1. Table 4 provides the sample names, sample dates, the C-8 concentration `measured and comments. The sample nomenclature is similar to that employed for the `groundwater samples. The first partof the sample name indicates the investigation and the sample type (WWO-S; Washington Works, Ohio, soil). The second part ofthe sample name indicates from which temporary boring the sample was collected (i.c. LHWASW1 is boring LHWASW-1). The third partofthe sample name indicates the depth below ground surface where the sample was collected. The Comments column, on the far right, provides abriefdescriptionofthe sample. The C-8 concentrations measured from the two borings ranged from ND (<2 ug/kg) to 170 ug/kg in LHWASW-1 and from ND to 110 ug/kg in LHWANW-1 (Figure 9). In general, the concentrationsof C-8 measured decreases with sampling depth in bothofthe temporary borings. The C-8 concentrations measured in soil from the temporary borings are significantly lower than the human health protective soil C-8 SL (240 mg/kg or 240,000 ug/kg) that was established by the CATT (WVDEP, 2002). C8 concentrations measured in soils from the Little Hocking well field are discussed in detail in Section 6, which presents the site conceptual model for C- in soil and `groundwater at the Little Hocking Water Association well field. iWiSmioegpioonn,t OAFor 17.03 000451 s `Samping Ivstgation Ross Site Conceptual Model 6.0 SITE CONCEPTUAL MODEL 6.1 Geology wUeslilnsg, tthhreegeecorloosgsi-csedcattiaonasva(iAl-aAbl'e, fBr-oB'm,thaendteCm-pCo"r)arwyerbeorgienngesraatneddtfhoerptrhoedLuictttileonHoacnkditnesgt well field. Appendix B provides the geologic logs for the temporary borings. Geological l`WoagtsefrorAstshoecpiratoidounc)tairone aprnodvtiedstedweilnlAsp(pmeanddeixavCa.ilaTbhlee tcoroDsus-Psoencttibony tlohceaLtiitotnlemHaopckiisng. pCrorvuindsedweisntFtiogueraest.10.CrCorsoss-ss-escetcitoinosnAs-AA-'A,'B-aBn"d,Ba-nBd"Cg-eCn'earralelpyrerusnenntoerdthitnoFsioguutrhesan11d,CH1o2,ckainndg13w,elrlesfpieecltdiivselcyo.mpTrhiesseedcorfostshr-eseecltiitohnoslosghicoawl tuhnaittsth(efrstormatgirgoruanpdhyosufrtfhaceeLittle downward): Q Holocene overbank deposits (approximately clay or sandy clay or sand and clay) 25-40 feetof a low permeable silty Q Pleistocenc glacial outwash `which is the site aquifer) deposits (approximately 20-35 feet of sand and gravel Q Dunkard Group bedrock (shale) i `wTehlel cfoiemlpdo,ssiitltiyocnolafytahnedcHloalyoacreeneobosveerrvbeadn,kwdheiploesiitnstihsevcaarisatbeler.poIrntitohne swaensdtearnndpcalratoyf the asnadn/doarnsdangrdayvcellaiys iasnfeournods.ionTahl esucrofnatcaec,t cbheartawceteenritzheed uipnpseormseiltlyoccaltaiyoannsdbythcehuanndneerllsyciuntg into the sand and gravel (Figure 13). variable, consistingofsand, sand and The compositionofthe sand and gravel uni gravel, silty sand, and clayey sand. Where is also gernacyousnilttesrteonde.in Tthheetleomgpsofroarrtyhbeoprriondgsu,cttihoenuannddertleymipnogrbaerdyrwoeclklsisiandmiiccaatceetohuast,begdrereonciksh consistsofred and blue shale, redclayand sandstone. 6.2 Hydrogeology C2r0o0s2s-bsaescetdioonns dAa-tAa',meBa-sBuraenddaCt-tCh"e aplrsooduschtoiwonthaendgrtoesutndwewlaltse.rAetletvhaetitoinmefowraAtuegrulsetve2l1s, `bweeirnegmuesaesdu.reTdh,eWceolnleo#1f,dWeeplrles#s2ioannadrWoeulnld #t3hesweertehrbeeeiwnegllpsucmapnedbeasnedenWemlolst#5obwvaisounsolty o`gnrocruonsdsw-asteecrtcioonntCo-uCr'm(aFpi,guwrheic13h),albsuotschaonwaslstohebedroabswedrovwend ofnroBm-tBh"e(pFuimguprieng12w),ellTsh,eis provided typically in Figure 8. ranges from The hydraulic conductivityofthe 100 10 300 t/day. Becauseof the alluvial aquifer high hydraulic in the area conductivity, itis tlhikeefloyutrhaptrtohdeucctoinoenowfeldlesp.reOshsiioonRsihviefrtssittasgep,os5i8t2i.o2n4rafpimdelyanwistehatlheevecly,clisinhgigohnerantdhoanffion f UWiiSninegpioonnt, OAFpr 17.03 -- 000452 0 . `Sampo Ivestgaion Rosus Site Conceptual Model the test production and test wells. Therefore, water from the river flows into the site aquifer. Precipitation also is a minor recharge source for the Little Hocking well field. 6.3 C-8 Transport Mechanisms and Migration Pathways Based on our current knowledge, the following paragraphs describe the transport mechanisms and migration pathways for C-8 from the Washington Works facility. A groundwater model was developed for the Washington Works facility as part ofthe RFI report for Washington Works (DuPont, 1999). The Consent Order required r`gerfoiunnedmweanttoerfctahpetugrreodubndywtahteeprummopdienlgfwoerltlhseaftactihleitsyitteoarned-etvoalcuoantfeitrhmetehxatteonftf-osfite migration of C-8 impacted groundwater is not occurring. To meet these requirements, refinementofthe groundwater eritical review from the United modeling work was completed with input, guidance, States Geological Survey, the USACOE, the West and Virginia Departmentof Health and Human Resources, and GIST members during the `tmhoedreelvidseevdelgorpomuenndtw,atcealribmroadteioln,foarntdhefifnaacliilziattyiaonndprtohceesssu.rrTouhnedirenpgoratroefafwiansalsufbimniditntgesd ftoor the GIST in January 2003 (DuPont, 2003). The revised groundwater model supports oDcucPuornrti'nsg parnedvithoautsncoonpcoltuenstiioanlsgtrhoatunndowoaftfe-rsimteigmriagtriaotniopnatohfwgaryouenxidswtastbeerniesatkhnothwenOthoiboe River to the Little Hocking well field. ` HWaoswheivnegrt,oDnuWPoornktshafadcirleiltye.aseCd-,8ainsdecmointttienduteostthoeraetlemaossep,hCe-r8e iinn atiwroempihsassieso,nsafvraopmorthe `apthtahsee,faacnidliatyptaortriecduluacteeCp-hasee.misIsnioMnsa.y 2T0h0e2r,eahdadsitbieoenanlacpopnrtorxoilmeaqtueilpymae6n5t wpearsceinntstalled decrease in total C-8 air emissions since the installation of this equipment compared to rleevdeulcstimoenassiunreCd-8foermi1s9s9i9o,nwshfernomC-t8heefmaicsilsiitoynarleevaenltsiwciepraeteadt dtuheriirnghigthheestn.extCofnetwiyneuaerds as abatement efficiency improvement projects are completed. The Little Hocking well field is located directly northof the Washington Works facility aficerlodssistdhoewOnhwiionRdiovfetrhientfoacOihliioty.aWndintdhedpirreecdtoimoinndaanttawsihnodwftlhoawt. thAeirLiettmliesHsioocnksinmgodweellilng by DuPont indicates that some C-8 in emissions migrate over the Little Hocking well field. from the Washington Works facility Some `wind, C-8 in thevaporand particulate phases, emitted from the is deposited on the surface soil at the Little Hocking well facility and transported by field. The concentrations owferCe-811m0eausgu/rkegdanind s1u7r0faucge/skogil(sF(iig.u.re0-111)f. ooCt-d8epits ht)hesnamlpelaecdheddubriyntghethpisreicnivpeisttatiigoantiforn om surface soils to surface-water bodies and/or infiltration into surface soils. DpriescsioplitvaetdioCn-.8TchoentCi-nu8ecsomnicgernattriatnigodnoiwnntwhaersdoilisn btehelouwnstahteursautrefdacze,onien wthiethuntshaetiunrfaitletdrating zone, ranged from 3.4 concentrationsof C-8 to 13 ug/kg, measured at almost an order ofmagnitude lower than the the surface (see LHWAN-1 and LHWASW-1 in UWSimripngolorn,t OmFoc 000453 wm . Samping Investiaon Resuts Site Conceptual Model Figure 11). The low permeabilityofthe upper silty clay likely slows the rate of downward migration of precipitation. In addition, the rate and directionofmigration of precipitation likely changes with the different lithologies encountered in the Holocene overbank deposits. For example, precipitation might migrate slowly downward through thesiltyclay and then migrate laterally in a sand lens at a much faster rate. Soil-type differences may also be responsible for the highly variable C-8 concentrations measured within the groundwater in silty clay unit (compare LHWAS-1 with C-8 concentration of `nondetectable to LHWAS-2 having C-8 at 78 ug/L). In addition, the rateofprecipitation `and the levelofthe water table likely have some control over the rate ofmigration of dissolved C-8. However, because C-8 is highly soluble (Fluoropolymers Manufacturers Group, 2001), it does not tend to precipitate or sorb to particles in the soil but it remains in solution and migrates with groundwater. `The concentrationsofC-8 in groundwater at the topofthe water table are higher than the concentration of C-8 just below at the lithologic contact between the silty clay and the sand and gravel (Figure 11). These data indicate that the overall the concentrationof C-8 decreases with depth in the water table within the silty clay. Alternatively, these data also may reflect the increased permeability in the sand and gravel compared to the sity clay. `The C- concentration measured in a single boring at various depths show that the concentrationof C-8 in groundwater and soil decreases with depth within the aquifer (Figure 11) as the dissolved C-8 migrates within the sand and gravel aquifer. However, the C-8 concentration at the baseof the sand and gravel aquifer (i.. position of the well | screens) is somewhat variable and does not seem to show a rend with groundwater flow direction towards the pumping wells. Table 2 shows that C-8 concentrations are consistent within a single production well but that the concentrations are different between the production wells. Well #3 consistently has the lowest C-8 concentration (less than lug/L) whereas Well #5 consistently has the highest C-8 concentration (ranging froms.69 10 8.59 ug/L). Because the four production wells are cycled on and off and the C-8 concentrations measured in the wells are not the same, the C-8 concentration in the finished water is variable. Table 2 shows the concentrationof C-8 in finished water has ranged from 1.69 10 4.29 ug/L. Briefly summarized, DuPont currently believes that C-8 from the DuPont facility is transported via air emissions by wind and is deposited on the Little Hocking well field surface soils. Precipitation leaches the C-8 downward through the unsaturated zone to the aquifer. Dissolved C-8 then migrates with groundwater within the aquifer. Groundwater containing low levelsof C-8 is then pumped from the aquifer through the production `wells. Water from the four production wells is mixed and water containing even lower levelsof C-8 (the finished water) then enters the Little Hocking Water Association distribution system. C-8 concentrations in finished water from Little Hocking are significantly below the human health protective water C-8 SL of 150 ug/L (WVDEP 2002). CiStort r 7.05 000452 | SeSmampplionggnmeessiigoaatitoonnRiaetssss CoCnocnclluussiioonnssaannddRReeccoommmmeennddaattiioonnss 7.0 CONCLUSIONS AND RECOMMENDATIONS dBaatsaeadvaoinlatbhlee,intvheestfioglaltoiwoinnag ctohnecLliutslieonHsoccakninbge Water made: Association well field and other @ AesltlagbrliosuhneddwhatuemranreshuelatlstharperboteelcotwivtehsecCr-e8enAisngsecsristmeerinatofofr Twoaxtiecri(twyaTteeraCm-(8CSALT;T) WVDEP 2002) of 150 ug/L. @ TThhee CC--88 ccoonncceennttrraattiioonnss iinn ggrroouunnddwwaatteerr adtectrheeatsoepdofwitthhedaeqputihfewri,twhiitnhtihnetahqeuisifletry. bcloatyt,ormaonfgetdhefraqoumifNerD, w(i<t0.h0i1n tuhge/Ls)antdo a7n8duggr/aLv,elw,hirlaengCe-dfcroonmceNntDra(t<i0o.n0s1atugt/hLe) to 8.58 ug/L (excluding results for TW). Q iCnodnisciastteentthaltythhiigshtepsHt wvealllusescmoensatsruurcetidoinniTWli-k4elyancdomoptrhoermifsieeldd,opbossesrivbaltyiodnuse to a ifnaitlheids gwreolult(sreaanlgoirn1g0farofmai1le2d3wetlol37c.as1inugg./LH)iagrheelrikceolnyceantttrriabtuitoendstoofsCha-l8lmoewasured dgereopuenrdwmaotneirtotrhiatngcoznotnaeinosrhiingthoetrhCe-w8elclonictseenltf,rawthiiocnhs cmiogurladthiangppdeonwinfwtahredgrionutto the seal well oarrethneotwellilkeclaystiongbewetrruelytorehparveesefnatialtedi.ve C-8 concentrations measured of the deep aquifer. in this | Q Dthreinfkoiunrgprwoadtuecrtiisonpuwmelples.d fTrhoemhtihgehebsottCt-o8mocfontcheentsraantdioanndmegarsavuerledaqiuniftehretfhoruorugh pprrootdeuccttiivoenwwaetlelrsCw-a8sS8L..58Tuhge/LC,-s8igrneisuflitcsanftolryflionwieshretdhwaanttehre, haucmoambnihneaatlitohn of rwaatnegresd ffrroomm t1h.e6p9r1o0d4u.c2t9ioung/wLe,llaslstohsaigsnidfiisctarnitbluyteldowteorLitthtalne tHhoecwkaitnegrcCu-s8toSmLe.rs, @ sAcllreseoniilnrgescurlittseariraebfoerlsooiwl t(shoeilCACT-T8-SesLt)oabfli2s4h0emdgh/ukmga(nWhVeaDltEhPpr2o0t0e2c).tiveThe fhoirghseosilt ssoaimlpCl-e8d cboenlcoewnttrhaetiwoantemreatsabulreeadreisno1n7d0eutge/ctkaeb(l0e.170 mg/kg). Most resus Q dOoveersalnlo,ttrheeadvielryyaldsoowrcbotnocesnoitlr,aetsipoencsoifalCl-y 8soimlesabseulroewdtihnetwhaetseoriltsabilne.dicate tht C- C8not driesstuilntgsufiosrh stohiils atensdt gwrelolunadwaatseorurscaempfolredhiigmhemredCi-atecloyncaednjtarcaetnitontso TinWs-oi4l daond groundwater Q@ Oavnedraglrlo,unthdiwsaitnevresmtoidgaetliionngarsecsuolmtpslaetneddt,hceoamvbaiilnaebdlewpihtyhstihoechaiermiecmailssdiaotnamfoordeCl-i8,ng aWroerskusffifacciielnittytoanudndweirtshtianndthtehLeimttilgeraHtoicoknipnagtWhawtaeyrs AosfsCo-c8iaftrioonm wtehlelWfaiselhdi. ngton sWimeingelonn, DpE. cos 000455 . S Samplingm Investigae tion Resulm ts nesgCoCnoe cnclluusso iioonnssat annddRRees ccoommmmes ennddaatts iioonnss Q Revised groundwater modeling by DuPont supports the previous conclusion that no potential groundwater migration pathway exists beneath the Ohio River to the Little Hocking Well field. system. Q Based on the current data available, DuPont believes the following pathway does exist. C-8 from deposited on the the DuPont facility is transported Little Hocking well field surface via air emissions by wind and is soils. Precipitation then leaches the C-8 downward through the unsaturated zone to the aquifer. Dissolved C-8 ltehveenlsmoigfrCa-t8esiwsitthhengrpouumnpdewadtferrowmitthhienatqhueifaeqruitfherr.ougGhrothuendfwouarteprrocdouncttaiionninwgelllso.w Water from the production wells is mixed and the finished water, containing even lower levelsofC-8, then enters the Little Hocking Water Association distribution Q This investigation as completed, combined with the overall understandingof C-8 `migration pathways within the Little Hocking well field, is also sufficient to understand the distributionof C-8 in the test wells, including TW-4, in the production wells and in the finished water that enters the LittleHocking distribution system. | Q In order to assess the impactofrecent C-8 air emission reductions at the Washington Works facility, DuPont recommends continuing quarterly monitoring of C-8 in `water for the four Little Hocking a periodoftwo years. Water Association `production wells and finished E re mm g 000o 456w | `Samping Investigation Results References 8.0 REFERENCES Burgess & Niple, Pumping, Ltd. 1988. Blennerhassett unpublished report. Island Water Supply Well Drilling and Test ColangelQou,alRi.tyV.D,atCaanDneusetrtao,ARn.nuB.l,aranSdpaMcoereMhaotuesreia,lJ.aTn.d M1o9n8i6t.orTihnegEfWfeelcltsSopfeciWfaitceatrions, PInrdoucseteridailngWsasotfet,heMaNdiinstohnA,nWnIu,alppM.ad10i0s-o1n20W.aste Conference on Municipal and DuPontWa2s00h3i.ngRteovni,sWedVGJraonuunadrwya2t0e0r3.FlDouwPoMnodteClo,rDpourPaotnetReWmaesdhiiantgitoonn GWroorkusp,and URS Diamond. Fi2e0l0d2,2.WaSsahmipnlgitnognICnovuensttyi,gatOihoinoPAluagnufsotr2L0i0t2l.e HDoucPkoinntgCWoartpeorraAtsesoRceimaetdiioantiWoenll Group and URS Diamond. W2a0s0h2ibn.gtGornouWnodrwkastPelranItn,veWsatsighaitnigotnoQnuaWloirtkys,AsWseusrtanVciregPirnoijaeJcatnPulaarnyf2o0r02. | DuPont Corporate Remediation Group and URS Diamond. La2n0d0f1i.ll,PrDorjeyctR-uSnpeLcainfdifcilWla,sWtaesMhainngatgoenmeWnotrkPsroPcleadnturaensdfoDresLiegtnaratteLadnOdffiflSli,teLocal Areas November 2001. Diamond. DuPont Corporate Remediation Group and URS 1919999.9.DuRPCoRntACFoarcpiolirtayteInRveesmteidgiaattioinonReGproortu,pDaunPdoUnRtSWaDsihaimnogntdo.n 1W9o9r9k.s,RJCuRneA30, FCaocriploirtaytIenvReesmteidgaitaitoinoRneGporrotu,pDaunPdoUntRSWaDsihaimnogntodn. Works June 30, 1999. DuPont FluoropFolluyomreorpMoalnyumfearcDtiusrpeerrssGiornosupOct20o0b1e.r 2G0u0i1.deTthoethSeocsiaefteyHoafntdhleinPglaostfics Industry, Inc. LeggetteW,aBtrearsShuepaprlsy&frGormahBalmen,nIenrch.as1s9e8t6t.IsHlyadnrdo,guenopluobgliicshEevdalrueapotrito.nfor Additional Kozar, M`W.aDt.era-nRdesMo.uVr.ceMsaItnhveess,ti2g0a0ti1o.nsAqRueipfoerrt-C0h1a-r4a0c3t6e,riUsntiitcesdDSattaatefsorGeWoelsotgiVciarlginia. Survey, 74 p. i_Sh--eport or 17.63 Wimington, OE 7 000457 `Somping Investgaon Resuts References Ohio Environmental Protection Agency, 2002. Fax dated May 28, 2002, from Steve Williams (OEPA) to Andrew Hartten (DuPont) providing sampling results from Little Hocking TW-4 and Well #2 conducted on April 23, 2002 Simard, C. M. 1989 Geological Historyof the Lower Terraces and Floodplainofthe Upper Ohio River Valley, Open File Report, West Virginia Geological Survey. 160P. Schultz, R.A. 1984. Groundwater Hydrologyof the Minor Tributary Basinsofthe Ohio River, West Virginia. WVDEP, 2002 Final Ammonium Perfluorooctanonate (C8) AssessmentofToxicity Team (CATT) Report August 2002. West Virginia Departmentof Environmental Protection. Frais epon Apr 17.03 `Wimington, DE [3 000458 oo ~ i5 8 000459 WT TTT] 2222. I8[ie Efsleslaza(ElzpEiEeee [Eee signee B HEa HEiEE nEEE EEE fy P8E|E5R[5H.EE2|E 858]858|2I5t H5|(E5[55i|5 55 . dE EEE ggs | A obgi3o (H[eREnEdeE| SaaasetgsEfledlEslReasyy -=545z [4 2 | F58L8E8Efg shalloatn s alonns 2$8355[[SERREERSEEEERRRREEE E55S5838RR5AR5ES og52=| Ii 3 |g g I ckali=elsls?" cosa5sEa aeg [s BE fmno ]u[eEasaso asasdele) fsiizizyy] 2 wr Je [@ale eleleeelgeoolfoefefloaed] 2 [#olbeosleos[ eedie| idis dio| dildd a|oel ldeddof 2& 3 i 5- =i g3 000460 | Table 2 C-81n Production and Test Wells LiteWaHsohciknignognWaCtoeunrtAys,sOochiiaotion esol vamon] tag Procucsonwell 7.19 Lest el Producion Well 759 resol mal 2arl Productionwell 6 _wesrosi)| szoaz] 202929] PPrroodsuucctiioonnWeest]7.38003 { [--Lwesoi] zee] as] ProductionWell 679) ee wipsoi 27203) -- wesozl aTzooo] ipso az |--PweT sozTlT -- aaaal uesoz| zeta] [esol re 2302 weve 230 Production wei aara] s|Prodcieonewe]l] 708 ao Froducionviet] 77 220010] Produc"taepnwieenle]] 761|) aw] prossenwel] 759 54 Producion es] 7.79 ae] prosucsoowe7r3]9 CE =o= Lies 272009) Prosvconwal 4 [ "euessooss|TTawmawoalr] oorsesproPdrvodcciionnvweil]el] E 7: | |I | w"Lureeessoossa|los|| awa"m vwemdsoeal aol orse )od] prpodovdcwiwoienol n7w5e77l) Producionweil 7.54 | wipsoal aang oss Produtonll 769 | |--ooweessooslll onveoeanal] odsosull prod aoviael]]1| wiesoa] 272503) ors Procucton viet] 7.44 Twerseosso| Towzwere]] reel z prpoodsvcnevaiweel|] 70744 esos] wwe eal awe] 739 Cuueessoos|slTT o wnsmea arsell slprPerodductuenwwacarrl]io77n429 ueseossosl] _anvowszl] earsi)]prodPcriodeonciwoenirl] 75Zz |----weiessoossl| oneaanlg Liesos] 22003 ssl produckonve7l.4] 7.s1o6 prodwciaounpvtearle|l 7.1 Dee dase | uresorwi| waa om Testwal| aif hea aes 20d oe Testwat] 70 EEE eswo ail linl Teste 713) ania | Page 1012 000461 Hsamoles } Table 2 - LCi-t8teWinaHsPhroiodnugcotcWnioaCntokeaurnntAdiys,TseoOscnntiiaWtoegilolns | Stel me Toa] sow] Tusorwe| ~uLwisposrownsl ve a assed] maa awaangv]e 2207g] Te] Tod Tews| 1229 TTeosstwteit]] 112133 vsuUppssoomnsl wsaavss e2a4l eww! o7 ULLiHerPssSoOonTvWuiSs| ww1a7a2v2e1d0d2]] iums] T aTecstawe]le ] 7.0l e3oo]sf E Eo --T B ose --awa --l 70d ELipsEon --wiiensd ial r TTesetedse la]3 wl un] Testu PoE on LeHsPpsOeTpWu1e2r|] vaste a ea vo ed]eFeeTesstw]eil 59) rwwssooesrraono|| uwLeressooeepsoooort|| ~~ aaszssnaal| zgoel] Foauemneesswweat]] | UUiipssoogeseoao|i|w_iuPispossopcorooir| Tassassoss CFE28 riTsesT wot] I[etrreonnecrrraesc|l"auainrmoneoruoecs]l vozptoes!] 1oeullBBooocstusstaeanssaammop] 7] iSnhAaudgeudsc2a0l0s2indicate groundwater sampled or the Lite Hocking Sampling Investigation 000462 artros Page2012 Lh samples i Table 3 Groundwater ElevatLiiotnleDaHtoackfiorngPrWoadtucetriAosnsaocnidatTieosnt Wells August 2002 Washington Couniy, Ohio or TomFeE EE Dep fo |t Grounh dwater] "WWeel#l2 d "[|7e61t3a4r7t | |5a6p8e8s02)|| 565M6S75L)008|3 w| Welewiss| s| eerfaastte ||saeoesz|| 5s73r8s5 | CTW TT seers (ir|a sore s | "TTww asaTT eS009795 |"2e2s7s8||seseetare | TTWw5 a|| eo sess s | | 3iet0 s||6srs3 rseosss T Twwow e | ssSes8se5er3s [1|| 92i04a43r||| sts5e7ee7o0rs0 | TW 60379 2657| 571.22 l Tw-iz | 60222 2395 57827 Coniorver | sar | ads |sem "5E1l0e.v0ataisonrsefweerreencseuarsvseuyemdptbiyonBofobrGPrWif-i1n owfelLHhoWuAseo1n08/o2f3/f0lo2orussiinbg, ain7i03 Page tof 1 000463 LH samples  z 8 F3 [BlEl sEc8 oE oo8 e 88BF2oa8oya0sse8g2122, e1sg.1y, 4,2t9 [lEElszs3e5s8s8a3c5s5c8c5i5g5s8i4a3l8s38s3s8a5i5c8s| Erlsga2sca2c2ei5asfza5c2e2s2a55t8e2s5a2b5i:n3 28355< 18 geErEiiesiaect BLE $ 5 go i Ze gs i Ses B EEE | :2 33520 BlReeolsongosfsiiso@Ts@e8s5ssPonraarreesd] 3EoOF fiz 8987272252 :% - | 3528 4 I: 2 Bsf2zfz Id|g EESt 33T5232% ISuEnSRnEEySsSRyUsSRsNsSRySRySsEeSisORiIEyRRsEenRRyRRrEEeERdY SI:2F gl 3 3 IBBBll 53_o3co2s5ecs2co0cs0oc9sc2e3oc3sesllels%ea0os0mee2sa2sg8l 525t 232 BREE GS EERE FE 3: SCENES 8E5ISBBES8SE8RY 22 : I|l3e2s2s5s2ss2s2s5s5s2ss2s3s5s2l2e0ss2s2s3s38s32]) 25:8 2228 aaisaaasaniiz3a3g8i8a8i8a8i8t3y8 lilessgggggsecogegeceoces Hev8iM2sEis [lE255555555555535p555555] 00036 g 000464 5 g 5 3 000465 RN sida TaN ENA Cro LL : a SIE lg FRY TRE i Ps Ta hPi C"S2az 5zgiAwlg7e !a N Cc ld ie pe< bEaTE Sie TEN CRAY, FEES I a Any Ip | Den i Ni) \Y I\is iB Eh Ee hes) hen EA Np Po Lo Tah me Aorepa o yd3 d mE LA SE Sein Lacs NRE Wor 5 We wiEN bow sl iy fh FFE CreA Wdl a): nbge.ll l a doh 1 Raed pk i na pide a -- 000466 eT CR. S12 -- - wep he * ues > Ln #5 Tv-3 w VELL #2 Pa "ol * [VELL #3 | 5 2 | av Py -- - exseuenT | e --~ = | =--op oF B--K _-- - - RIVER ono || 3 LE egenn:se TEST WELL | Soave Pe 000467 CorpoirasteSReemedmiaetinon Group | Lite Htocgkintg Weatrer Association wo 20| wmermemy Ef fee REE cr 912 --- 1 vs vs 0*384 522 Oyen gs w*s 448 ---- --] VE1L.7L2 #1 v*i,o "4 w 2VE9L7L 2 tvai 0.758 0E7w4s #3 | e216 oe -- EASEMENT- $00 _ -- TT -- -- op OF BRY -- 0 RIVER -- ow BWLAETGEENRD:SUPPLY WELL 179 TCE-S8T RwESeULTS IN UG/L SCALE el 200 200 . 000468 am C5JANIUNARGY,ROU2N0D02WATER Corporpaite Remerdieamti,on Group | Lite HLoictktinHgocWkoitnegr, AOsfsloociation lon Sin [[FaoemT5 o TeTo=rin| f B ERTea o HThy 1 a i i TiIh = = ' oR 5N s GEeR | N3 eaNy| 000469 CET me fo Poa i ; LN | I i ; 1 Pg Popa A jo 2 FORT meaRe | | | |! F i "N f i go 1 HH = TR el , Ji || peal wl bE ER filRII= + Pha NN iill i Hl ! EEE i J ur 0 Le A - - WELL #1 *Ven ws wvr ve gs ws2 + - WELL $2 on ugnot * wed [ups | waxt uwie-2 LHWAW-2 xX | Cveeox x ETgd en wes x wr ua nxt * _ | _-- wis-2 iE"AoSEMENT. -- --- pe op OF BRK-- -- ono RWER Leceno: *Wm A R WTAETESR TR SE~UPPsLoYusWahELiLes x BKOiRInNGs-- GROUNDWATER scave NOTEL:OCATIONS OF WELLS AND BORNGS ARE APPROXIMATE. -- 000471 am Corporate Remediation Group | EMPORARY BORING Lite Hocking Water LOCATI:ONS Assocition re it Hocing, One 200 S 200 momen ete ; oltiW(E7L2-L32#91 | eX x EE vs [.rs CEawe gs wo VEL 2 w`e.n @a3-e2) fr whup Om are plweea4t3 cr vwwz 9 XQone-2 3 we (439) SHaany | atm ols RD e%e og x 210 [Ee LHWWAwS=1 io _ 2 _--{op OF BAK -- EASEMENT Vow amson ---- ---- 0 RWVER dT*aas rn f -173) | woee @rseosas) | _ | LEGEND: WTEASTTERWESLULPPLY WELL BORING -- SolL_& x SBOURPILNEGS-- GROUNDWATER 200 SCA La E 200 NOTEL:OCATIONS OF WELLS AND BORNGS ANRDE =AP<P0R.O0X1IMAuTgE/.l 000472 = Corporate Remediation Group | Little Hocking Water Association oddstv Little Hocking, Ohio fp or p| anSia WO i77 nl i0 nl crs -- - a a a3 2o B23 | \\ wae.w)0 VL ho, 2. ri WELL 5 oe ome 2> / 3 on wae ven o pee [IN | 2 --LHWAN-=1 X " uiwane-2 ~Pha aUAN-2 pehu _ ~~ | oo xX XneAwc wie xX 07s _ sz ee[EASEMENT- B*A _- -- ---- -- op OF BAK = ORV0 --~ RIVER LEGEND: 3 mTESnT wws. n ABSO O 565------ DDIIRREECCTTIOINON ooFF GROUND= fem GGRROOUNNDOWNATTEERRCONTOUR X BSAOlRpNiGes~ GROUNDWATER 120 WATEEERTLEMVeELL ELEVATIONS woreRS.EoEoRmoRoTrEv:eus wo sonncs | Ep 000973 CROONER, ELEN CONTOUR We scale CorporaitnefRaermeediation Group | Lite HUotckeinHgocWkeitnegr, AOsnslocation 200 e e 200 TIE ax _ _ a = eT -- i VEL #1 v[e*i es, * ve gs wa + aval #2 or UnAw-1 (a-110s8/0) * wie BBag | a x Suez ve eas | XX & en 02175 Cxae) x S * |-- LAY _-- Batg=t - EASEMENT- | vms-2 w*e | Lop OF BY -- -- -- = WLAETGEENRD:SUPPLY WELL TEST WELL A SRoo meRSoshmimmese SAMPLESSCALE w= -- 0 --__ -- ono RIVER NOTE: 000474 LOCATIONS OF WELLS AND BORNGS ARE APPROXIMATE. ND = NON DETECT AT STATED REPORTING LIMIT C-5 SoncaaTon wo |aw wmmreens & fe fefe] Corporatne Reemetdiation Group | Little HLoictkeinHgocWkaitnegr, AOsnsioociation = -_ . ~] Lo Twn he A * c . / I WELL #5 ur " ee ut nN aot ANE WELL #3 | owe | C /A Laon | = EASEMENT nee | op OF BAK -- ee B' lt --' RIVESR -- A ono -- os Blifdes LEGEND: m WTEASTTERWESULPPLY WELL - x ilies CcAroLnEoweR NOTEL:OCATIONS. OF WELLS AND BORINGS ARE APPROXIMATE. 00047.5 [amp o CorporaotnSe ReomeCditaetoion Group | Lite HLoictkeinHgocWkaitnegr, AOshsiooration 200 ) 200" bt Sie 0 Foam 5 TMw] hes > Ih iitti # -- mt hilIh fi || Pi Hi T4 | E4 i | , 2 i : i 2t { | ' eypel yg L/W 1, G Fereoiradngd 7 51f33 i tt HER] i 48 ;| : iii il P so y io i i L,. 000476 i die : io 22 HE < 8 om LTiT | TF j f ol i ' wm i ! # | |;| | ii ! : ' miill Me Ts ii iiill: |w e T =f g \ eel ____8 \ { | |E V mm o e SEs ity E 8a &$ rr 000477 - x ik8 i PE-- | rT i CTT | = of i 259 133 1 % Clee LL Co E EEER i i i 4 2gg [8g]e |! Re If rT | [I Bol | | vf B= a: : 3 !2 of = | i id 5 a ;| || || | ! | | ee Ly iil Ch J | io IE . . Pa <= /i i f/d Code i 000478 1 1: af Ld ` 2 i 8 x3 000479 APPENDIX A | C-8 ANALYTICAL REPORTING 000480 . C-8 Analysis of Water B bInyOEcxtyogbeenr R2e0s0e1a,rcahn,eIwnc.an(alEyxtyigceanl;melotchaotdedfiorn aSntaaltyesCioslolfegCe-,8PiAn).watTehriswalasbodreavteolroypuetdilainzedstLeisqtueidd CLhrCo/mMaSt/oMgSrafpohr yCT-8anadnaelmysiMsasinswSapteecrtirnomNeotvreym(bLeCr/M2S00/1MSa)n.d DuPont Exygen adopted the continues to regular use of perform the water analyses for DuPont. eEvxaylgueanterdepfoorrtpsreCc-i8siroensublytscfoomrptahreilnagbotrhaetfoireyldrespalmicpalteeorfeseualcthtoftiheledcsoarmrpelsep.onTdihnegselarbeosrulattsorayre replicate result. Q Ifboth results arc for that analyte is less than the practical quantitation limit considered to have passed the precision (PQL), criteria. the replicate sample Q Ifone or both considered to results arc between one and five have met the precision criteria if times the PQL, the two results the replicate differ by less is than the PQL. Q a[fvoanleuerelseuslsttihsalnestshethPaQnLt,hethPeQrLeplaincdatteheisostahiedrtios hnoatv,eamnedtiftthheeactcweoptraesnucletscrdiitferfiear.ed by Q tIhfbeoctrhiterreisauilftsthaererealtalteiavsetpfeirvceetnitmdeisfftehreePncQeL,(RtPhDe)rebpelitcwaeteenisthceontswioderreesdulttos hisavleessmethtan `ormeeaqsuuarletmoen2t0s%.divTihdeedRbPyDthiesirthaevearbasgoel.ute valueofthe differenceoftwo sWahmepnlethaendprleacbiosriaotnorcryitreerpilaicoauttelirneseudltasborevpeorarteedmebty,tEhxe ylgabeonrarteoproyr.tIs ftchreiatevreiraagfoerofprtehceisfiioenldare reexscueletd(efdr,omExtyhgeesnamrpelpeo/rtlsabthreephliigchaeteropfairt)heissaabmopvlee tahnedPlQabLreapnldicoanteerbeesullotws., tFhienarlesluyl,twthhaetnisone. above (CED) the PQLS is reported. C-8 results are recorded in and are reported as FC-143 for consistency with the Corporate Environmental historical results. Database aAnnalaylsiiqsuoatroe fueseadchtofaicslsdesssaamcpclueraicsya.lsTo haenaMlySzerdecaosvaermyatvrailxuespmiukset(fMaSll).beRtewseuelnts7o0ftothe13M0S%, unless the sample used to spike field concentration is samples is 500 at least ug/L. four times the amount spiked. The maximum amount SAltlanddaatradpOapcekraagteisnggePnreorcaetdeudrbeys E(xSyOgPe)nanardedraetvaiueswaebidliitny-,huosuisnegftorhecochmepclkilaisntceprwoivtihdtehdeilnatbhoeratory dQautaalirteypoArstseudrbayncEexPyrgoejnechtaPvleanbe(eDnuPgeonnetra2t00e2dai)n. coRmespullitasnocfe twhiethint-hheoluasbeorraetvoireywSiOnPdi,cawtieththaftew jeuxdcgeeptdiuosnasbalsenfootretdheinputrhepoisnedsiovfitduhael rperovjieecwt.suAmmsaurbiseest.of tAhlleddaattaarpeapcorktaegdesbygeEnxeyrgateendhbayveExbyegeenn ihnadveepbeenedennstub(im.i.t,ttehdirtdo-pEanrvtiy)roqnumaelnittyalasSstuarnadnacredsr,evIinecw.(ESRIe)suilntVsoalflethyeFoquraglei,tyPeansnssuyrlavnacneiar,evfioerwan will be provided when available. 000481 Renan mr C-8 Analysis of Soil L"Tahbeorlaatboorriaetso,ryInpce.,rfAorrvmaidnag, aCnoalloyrsiasdoof(sSoTiLl-sDaenmvpelre)s.and associated field blanks is Severn-Trent (SSTOLP-)D,eDnEvNe-rLaCn-al0y0z1e2sAs.ampElaecshfsoarmCp-l8eaicsctoersdtiednguntsopaikleadb,oriantodruyplsitcaantdea(rIdaobpreerpaltiicantge)p,roacneddsuprieked with C-8, using LC/MS/MS. SevTaLl-uDateendveforrrperpeocritssioCn-8byrecsoulmtpsafroirntghethleasboarmaptloeryrerseuplltictaotetohefceoarcrhesspaomnpdlien.g Tlhabeosreatroersyulrtespalriec.ate result. Q Iffobrotthahtraensaullytstearies cloesnssitdhearnetdhteophraacvteicpaalsqsueadnttihteatpiroencilsiimointc(rPiQteLr)ia,.the replicate sample Q Ifone or both results are between one and five times the PQL, the replicate is cPoQnLs.idered to have met the precision criteriaif the two results differ by less than the Q afovanleuerelseuslsttihalnestshethPaQnLt,hethPeQrLepalincdatteheisostahiedrtios hnoatv,eamnedtiftthheeactcweoptraesnucletscrdiitfefreiared by Q Ifboth results are at least five times the PQL, the replicate is considered to have met tohreecqruiatler1ia0i.f2t0h%e. rTehlaetiRvePpDericsetnhtedaibfsfoelruetneceva(lRuPeoDf)tbheetwdeieffnetrheenctewoofrtewsoults is less than | `measurements divided by their average. `sWahmepnlethaendprleacbisrieopnliccraitteerrieasuoluttsl.iInfedcraibteorviea afroer pmreetc,isSiToLn-aDreenevxecreerdeepdo,rtSsTtLh-eDaevnevraegreorefptorhtes the hreipglhiecraotfetphaier)saismapbloevaendthleaPb QreLplaincadteonreesubletls.ow,Fitnhaellrye,suwlhtetnhatonies arbesouvlet (tfheroPmQtLheissarmeppolret/elda.b C-8 resultsarecurrently reported as FC-143 recorded in DuPont's Corporate Environmental for consistency with historical results. Database (CED) and are Aannalaylsiiqsuaotroefusaecdhtofaieslsdesssamacpclueraicsya.lsoThaenaMlySzerdecaosvaermyatvrailxuespsihkoeul(dMSf)a.ll bReetswuletesno7f0thtoeM13S0%, unless the sample concentration is significantly higher than the amount spiked. AllalbodraattaorpyaSctkaangdeasrgdeOnpeerraatetdinbgyPSrTocLe-dDuernevse(raSrOePr)eavnidewdaetda iunsa-bhioluistye.foRrescuolmtpsloifatnhcee wiint-hhotuhsee review indicate that data reported by STL-Denver have been generated in compliance with the Ithaeboprraotjoecrty.SOAP.subAsleltodafttahreepdoarttaepdabcykaSgTeLs-gDeennevreatrehdabvyeSbTeLe-nDjeundvgeedr husaavbelebefeonr tshuebmpiutrtpeodsetso of Environmental Standards, Inc (ESI) in Valley Forge, Pennsylvania, for an independent (i.c., third-party) quality assurance review. `when available. Resultsofthe quality assurance review will be provided 000482 Ran mz x3 = 000483 APPENDIX B GEOLOGIC LOGS FOR LITTLE HOCKING WATER ASSOCIATION WELL FIELD TEMPORARY BORINGS 000484 : TLHr WA-No1peron) | to2 masA SFC isnt | Dien eam | DSiehepCeon `Washington WorksConsentOrder | eSTn, Orli Method eT, Geoprobe | (Simraamnm kd oraReon. Floor Sp 61000 3 i pr-- ; nNor 7FI ) e[ ve e mmmer i = (I |conto srycuangymots sestomanrae I wl [orones vous `orangemotte,hard, semi-plastic wl, HI oi | ovunenSsLYmoCLmAY.rrrvfuneytnssrt,sstcks.Roinio csosrosgme.c "0 - y7p -- B il Raresandandpebbles,Sandstone casts at 15.2 and 15.9. Moinotsmottt,e. Zz) iii ere H : viss r ae ts ET 1 [I = ssmmmm== wm w |= 000485 SE -- ememm, fmm LHWA-NEP1OSTINI |B 7. 1 EEFme eera| mh nga i wy : ee 8.By 2 avs nom CLAVEY ST 1. i wh TL ------ | | i 9 wl o SnSUT Ua.mrcosmomn rtnn nt 7 een i Gonined ron SLTY CLwithsAmosYac mo oes. maces. Ie 7WH |racemegmar wiy 77 |sememseeenmere i [----------------" Ci a LI 5] FEE wot tn50,witssn, rio mi - LHWA-NE1 wn Ovesares panjpaagnet2eis) DuPWoasnhLtiCinoegrtpcoonirWantoegrRkeImvCeeodsnitsagetaniitoonOnrGdreourp: | `DSDaurtergCvloimnpvloeotsress AuGcgoaunesottw2a0n,s2002 Prjec 3 18885702 Gomory Sows rr ------ Severn | nemo ESasatincgCGooordto s788 `Sample prefix LHWANE. + ovn gtrseonre5asikahnowe 1 Posi eroor i 3 : 3 DESCRIPTION g 2 EZ TTT | |Toavienwbeon mwcaickyofuso. 0PcaoarrsaecSoAvaNyD3w.i40ssomefnet edi welFunded a1 35531J -------- ps Cin s0- 5772] | Berowneto darrkbrownsityfine tocoarse SAND wisome fin tocoarse rave, EEEeE5]] | roopionncnotrmaayiecobmopstseonSLmeTsSsTrOeNsE |e Bheerees ToIfevaceoonus 5503.s. varsus oa = EEE & es w] p Eey 00048' Ti Co as EE reeeLHWAm-oNmEPn2mgaE | Sir me nt T ae . EE = id oho Ristow. TrSiesn 23 DESCRIPTION pl B77 (eeemae sm mm wl mw Heavy range tte,some ods, owlack.Gaytverr oau, a [1 ver csssme mss c. ss sn 7 | wv o i 8"longpartingwithorangecoating. 7 rs TTT " wi onSLTLAY ring thsbonyan SLTYGAY. Sosmi "v0i e7fit [Er mmm m me m r lg] . 7 Sum SLTVISKNY CLAY increased snd fewpestis +cotsofsscsone a |BH 7 . S18 TO al25.7. Welset (34PVC). 2 000488 ge LHWA-E1 111) _| tomescuvso R: LSa | oe gi aan ee RESET |S SND. r [Siemimvmmoenn. 1 > om te fons rong :5 o |2 5: EHEF DESCRIPTION ow ih AELoY A i HH] casossn cua sin soresrg mosssn cose on te 5 [Af] |acs: Sometckmsrotslisiersm. wi vi | 7 ! 0 we v[Ii] |iicvieneoswnSeSmIiLpTiYaCsiLcAYwithgraymotesand gray costed acres. Nomeist | 3 wwwiii wvwi ta i(1ssA)) 77 Emm H wl * 7 7 SA mwas 6Sity fineSAND,brown,wel,sloppy. B Levm anem m ------ A = v A ns SEND BRNCay vay.pons A 4 TD @26. Wellset (314 PVC). 000489 | romLHWAa-81s.e toy |LtiomE my N DuronCopotsRaedaton Grup | DieCores Mop 202 Wep sWnorkiy sCgonosenil | SSaTnat cEosm | SSenRFuEeIoEaIIrIs siLon. H2i EAR0EHT[2 DESCRIPTION i2 wel 8 |2 : Fee [B7LIE)OT [[ooem omt iAg smcae commet n. swae rms v9i oa)y TH | wwwilil " oo) i raymots avemos Inside (od ates?)Ciay is 4butsem last nm evVeryhaard lirn, gh bsromwnoSLtTYeCLAY,samess above 8] lo wn I wiI |e|smsRirieon egrsameoasnsemssosn cnn [5 ld) 7 vz ESEA CLAYCaUr sGnHIdA,vSorylmoEsLvYotawtc.kFoco akaoot.wGenystreaem, o - 7 San on 200inSANOY CLAY ikverymos,nar. A FI oar mm sasmre ean wIyH |coy ncome vans mit sv curs wosw cuavs. super Be wy is ightbrown and sof,Sandyclaysare very moist and lightbrown. LZ 000490 LHWA-S2 -- | Crsl I BEA WashinglonWorksConsent Order Datest Driling Method it; Geoprade |: I SEE -- ] HRsorElev. 3 sescrrTion ee PAP] Team SITY Cavwiesser J wmwa [7 eSernve ememra som es BrownSILTY CLAY with gray, moist, semi-plastic, roots,rareorange mottes. ; cave = | [I7] soos m4m7t7m immsece s., sm Sots neemra stom, ct "le (I7 (som wl vi Brown SILTYCLliA keabY ove. Wet spots ingraymotes. Naosst t. Slightlysoft `Waterlevel measurednextmorning, en vr TE Fo fas 7 ee if . SumSANDYCLAY. verymossl otwet. Sometiack 08h gnc?) SDr SA AEE yeti { : A -- J 4 [ IIE E eef v BrownSILTY SANDwithminor Clay,wel,minormica. ==Ese me 0049 | He - on SH ~! 10/2) : | = me E : ~ wen i 7 B - | Z 7 " } | = - . DESCH rT-= . 7 i} }: - ) =| = j : | oo } 7 . - T; an, 9 8--ro |e|ae:i . | "1.3 7 77v7/ .--- | 7 | - 7: | | .7 || | T 20- 57 9 7 v77i7 - ~- 7 _ on | : V5 . 2T Li H [rLHr WA-Sr Ws1eza en | F psemrseoT ansrs TFrar rsacoenes" `DuPont Corporate Remediation Group. ||SEoybtaomCruagplee,sts EtoIs. Aegon 28,3008 Sevre-- Fqueer-- esin-- s -- TTT TT] omen Seve oseSise6i007 awil g d3|jE DESCRITION So] FrITT | BsreCLAvoVEmVsSehTsnone ee meme me Riessa gare == Hmii 3 [enone nl AN |=`Brownto graySILTYCLAYwithlittefinesand,wet.Grades 10sitwithsome fine. | i CEL] i rom mes SG ee 3 iH]i {|immeeemmesbnooem s0 wi wns apm st cmt | |owsum ps Ei22nE5i2]) ||TSonaninshbsroouwn nfieertSoometdoiumSaILeTY SANDwit tlfietomedium gravel,wet, wus | i rsa PS 5 EE] |[Fiinetno maed gtrovem0(005g)) bhaoowedby aisbrown ne tocoarse SILTY SAND = Aa! Hi owsane ws ssl BEE | rainbrown tntcers rained SLTYSAND ithsomefoetocourse ave, 1757] | low townto eensgrayweatheredSH + STbarockay [8] =e TOA@-ST. 000493 rr ERE Senem || sSm oe E ESEmT | E|e mEemEee monon 2 i ; wh E--------1 1. 059s i Lightbrown SILTYCLAY with gaymotes `semi-tfp,crlumablsesitntioscma,ll balls | I0 reosss pysnes "1 7 D072] |mo meom ar sm 7 077) rs versa 4o55l! Ln (71)) r(omEanEaEss onmomsnemoome a[8] 99 wyvl 5rs SLT CU tr, rt lg] A aa UI Nora S0ry Le esrems. ns ls] wi SANDYSILTY CLAY,Piastc, gray andorange motes, somemica. Small piece =n Es EE -- 4SO | TT ezan LHWA-W1 ayo r Coootrie" DuPont Corporate Remediation Group || CSCiowwaSiatuinghnsing m mohaongmoe ,th 2 e--Tre-------- 000 8 iveRein | sseomnegn s | SS n Sentomp ern e m --c--n-- hursib=eiodt Es= oR|Ef 2 3[3 DESCRIPTION : = 7 SRSTCA. a pieWo ST oon CZeit frm ]= WI I] [SFITLYTCLAYT.mianevsoanbd,ost,most 3 " - 5 000495 | rr rn |PPu asionpe Ceortod na |oe rSeeOU geSeTer,, 5 H | ar p| -- ind-- e " Ofer ann EE HI coms msm ola wl Lightbrown SILTY LAY, raymotte,semi lastc,Dry,minordarkbrown mies. | i vw tlnomoisturenoted. elwy' 7 Tvs le wii s15 O ishorei sctin) lemmsye ne [| [1 le oth osaca Smamicsblowspl. Fra ssssen nt sss A =r 777 rE -------- | Awi] [BsroewnnSsILoTYrCLsAuYr.mvionioarrSANaDv.en ~~ ona A DI] ves onset10 verystsn sco 254 on oh Roisvery thin. B '7 Sr 4 i LHWAW2 me20n | HNeonmgmseisn Svs pans prot DueponttCarhpwaelonsRn epCmoodnae otroannGda"sp || SDOHeamCtmopartreensscs uCGousorn202 SeaPipessinatoaen esos Comoe ovate vneas rote #1 CC jiowesr eae Forsie r61200 ole 7 ST, : rovi "BrownandGray SILTY CLAY. increasedsandcontent wih depth,most. i | a uy (0 AA) [E Cr SaOYCrO C,VESsuana. Baiv rSatLpY SeA GsAoVbEanLgTD iB| ows "w us PS ss 000497 TET ah LHWA-NWG1astar) | Nomen Tor] et ov na res ee |pren-- lems sew er. oFl[2 DESCRIPTION f & |Z & T Eee ream | [oO "= (i iHihetie ------ son it | Li 10 on i nA Ey BrownSILTYCLAYwi itefine tomediumgravel and tie finesand, becomes moist, doses i WUvYLo [Lraomnssisrmeannimnmaeoiontromeemgrrvsmnsoo nueso mc sr wre A wi g 159) i7w : ate WI {somes arisen , wd SToo SooYSO Tecy ESBE 28 Savinrn mm SEY St ne Lr 2 Livin 000498 > 3 8 000499 APPENDIX C GEOLOGIC LOGS FOR PRODUCTION AND TEST WELLS (PROVIDED BY LITTLE HOCKING) 000500 `Well Log and Drilling Report a Page lof| y wee # | Glia Water Wel LogsodDili Rept Dvisoonf Wer `Water Homem:aihl: ctb levpe r Pidhaorn/so e@a:dts6ae1ro4sw n-tb2ay6tse5eh-On w6ha7.wt4ueS0r. ogmers AEA WELL LOGAND. DRILLINGREPORT RIyGtINNWAALaSHOmIWNeGNTsEONRLAITNTLDEHLOOCCKAINTGIOWANTER LnortwNukmibperB:ELPRE Section Number: -retsosn: Number: 2 SiStoatesnOFMi Years 1981 ZLiopcaCtoidoen:Ares: i}~AhgNoSlDeTiRDaimUeaCtmeeTrtsIerO0N1nDETAILS SiatteersTypes opmiDeaptse $0,4. Seren Lengths DCeeatpitehnoogfBLCeeodmuprglotehctkiS:oLnA:. 112870 ters Name: GM. BAKE&R SON si EedLoLwwaTntEe:rS5LT1e.vDaE:T1A05I.LS eTetihDuerrati2on0:p40m4s. ANsOsoNsEiatedReports : WELLLOG "FoArNmaD&tiConLsAY SAND& CLAY on From To % _RAANVDEL&SGARNADVIECLLAY % 40 0% A 000501 5 | epson dor state.oh uswater/maptechs/wellogs/appiwell_log_report asplenty=WASHINGTOwiNr&... 1/17/2002 ater Well Log and Diling Report Page 1 of 1 , i fg wx wer OhiWoaDepWealrltLomgoesfnNdturrlyReRsoeuprocrets Division ofWater WaterHomee:mahil sihvesbPrdhootnwes@:ad6t1n4o-sh2tu6ee5h-ow6bs7c4vr0s | seme OT 1 WELLLOG AND DRILLING REPORT { | lpoOrriegiinoalWmOAawSrnHeIrONNWGaNTmeOE:NRLIATTNLDE HLOOCCKIANTGIOANTERLoTotwnNsehmibpe:rB:ELPRE Secon Number: crAdyr:es: on Number: 2 LStoactaetsiOonHMap Year: 195]L2opcaCtoitoen:Are: i | *LcBoorenehsolterDniuamcetteinro: npETAILS CTiotagl DeTputht: 0f. DCueitopaBnedtgroch3k:1. f| rWerlleUse: SDcerlele'nsLeNnagmteh:: GA. BAKDEaRte&oSfOCNompletion: 11/2870 | WELL TEST DETAILS || sscwiwoemesrzennv 6. TTeessttRDautreasti0on0:g4mrs. ANsOsNoEc.iatedReports "I wELLL0G - | _hFoermaatiorns Fr0om T7om + Nsw Pa | 1SAND& GRAVEL 3-0 iS ! Jue 1 000502 rodarstate oh us/waterfmaptechs/wellogs/app/well_log_reportasp?enty=WASHINGwiTnOeN.&.. 1/1772 |fates Wel Log and Ding Report Page of1 IL Ohi[ o pet H-- artRootes ,i- wee #3 A oer PhonDei61v43io6f5s6Wo7a4tn0e Vn HS a}Wet utr 10 WELL LOGAND DRILLING -------- REPORT {oCOorrugnritGey:smOWawAnrSeHrOINNWaGNmTeEO:NRLIATNTLDEHLOOCCKAINTGIOWANTER TLaotmsNhuimpb:erB:ELPRE Section Number: |cnudrdr:ems corp 721 Suen Zip Codes | ecuion Naber Toceton MapYour: Ht LocumAres L | BCorOeNhoSlTeDRiUaCmeTtIerONDETAILS Tow Depths 7 DetopBetdrohck iy Casing Diameter: 12in. `Well Use: Casing Thickness: Screen Length: Casing Length: 34fi DateofCompletion: 4/29/76 4+ Aquifer Type: Driller's Name: LATNE-OHIO, COLS retmeiriin WELLTEST DETAILS RR SY wdown: 8i. "Test Duration: 2 hrs. NONE - WELL LOG . FBoRrNmaCtLiAoYns BRSANNDSYAGNRDAYVECLL,AY REDa SHALE ---- ou From To uwsl % os L = L ; 000503 - a hitp:/di/rwstawtew. . oh.us/water/maptechs/wellogs/app/well_log_report.asp?win=450860&cnty=WASHIL... 1/17/200: on ; n WELL INFORMATION - DRIFTWELLS EL The layne Ohio Company R| nr cEoEur, awWrie.tch aera PEReTe = a g1 | a Nameof Job_Little Hocking Water & Sewer -- ye Ci orVt illy age _ LittleHocking - WellNo.: BLU. S orilers: F._Webb & D. Colburn Section Twp. Re rs Date _ 12-20-85 State _Ohio Rigi__45 - c Otherwise located as_AdjacenttoT.H.SandT.W.SA ca.mB rears aT, RS WorkBegan: _12~3-85 `WorkCompleted: __12-12-85 WellDep totPluhg: 56" } or je i 3s ss steel wn veledgmurom steel wn veldedumsron . LT or pinstom . erent Ton Cook aot on om i; 15' .375 $5.5. rowith tte Weldedjoint from 5 . w_15 Toot soto Goon _5.5. Plate ot ert 24" [own } aroun _4ton f orton inch from we x'xi/e" 0 . 56" oe G Parr ry avel rom B se 21 000504 | f ny I ! Ael by Fest Fert 0 to 20 20 27 27 37 37 to 45 45 57 --_-- -_-- WELL LoG Brown clay Desciption Brown sandy clay Brown clay with coarse to fine sand Medium to coarse sand and gravel with' sand Medium to coarse sand and gravel fine sand - enn --- ---- _-- _---- -_-- qh 00 er Tessin. r-------------------------------- by Wel Test Data: SateLevel 188";pumping evel 31% tier 24 pourspumping _192___ ky Length of test brs. See Wel Tex Data Sheet Dated, REmARKs: by -_-- | r---------------------------------------------- by ---- re --------rrm-------- a i| 000505 a EET Vo Be The layne Ohio Company - 1g yrs ! WELL INFORM=DARITFTIWEOLLNS | [i] LS + AE PiUTsS AT DRonUaGc+iAsTER T(RGESAETSCQUPHENT Date _8/31/84 1 `Name of Job Little Hocking GityorVillage Little Hocking Sute _Ohio a 1 -- i Well No.: TW-1 ww Drillers: __D. Havens ote Rig:__SR_ om oo A sein To. ue CL Oxbernie located si --A50% south of PW 43 OO 0 9 RL `WorkBegan: __8/30/84 NeWork Completed: __ war 8/30/84 = WellDeptotPluhg: __ 55" cain ers (mm on meme ___ 50 3" sch. 40 PVC with SCIEW_ joints from wn J---- o_ ee wi J-- - J Screen Record: Type st 3" slot .010 .010 Typeot Sut govom__BYC. J-- nentom ntrom crm: ee PVC with i Lil Amount - 11008 Size #4 `Source. parry Gravel SCTEY joints from J From 58" 000506 o___ . To 30 1 " n G: g fo fee w__5 welt 106 Gratien Brown clay 5 to 10 10 _ 15 Brown sandy clay Brown sandy clay, traces of uray clay 15 to 32 Brown sandy clay, layers of sand 32 to 53 Sand and gravel -wo 53 to 57 Red shale, blue shale hn --: _-- to --_------ h;n ---- --errrr lMy eceerea 1seerines2-- !mt --m--r-- weirmeieessoe-- ee-- e sr --ro-- man----- Ly maori ---- 0 - by REMARKS: --------er--e ------------------------------------ ees eeemmemeeeeeeeeeeeeeiemi h A _---- qj --- FE wo il 000507 "Tin TR I! i 4" o ry | WELLINFORMATION -- DRIFTWELLS iE B- The layneOhio Company TR ATER WEL+ LLASY PUMPTESST DRILLIWANTEGR TREATHENT EQUIMENT 4821 Vulcan Avenue ColumOhbiou43s22,8 (614) 876-1195 [INI romeots_ Little Wockina owe __8/31/84 | Cityor viinge__ Little Hocking sue Ohio | E weino: __Tw-z orien: __D. Havens ng SR I and fu__dotie am Section Th Co cou Overvie oonsan 5563 south of pw 3 [Hf woreegm: Cun Recor d:A8e/3s0s/e84re ade Tom" WeorskiComrpoluentdedF:A_T 8i/m3e0w/l8l4wir rWlellDepthtoPlog: __55* |4 (Am Dia. WiorThickeess Material J s0 3 sch. 40 VC with Screw jomtiom } with joints from to TH with { Saeen Rend: Type __S1ot 010 TH Amon ow. Opening Mert Joints from J w - 1 Cs 3" .010 BVC with Screw joints from : "TH veo setnsonom__BvC with jointsfrom n re ; Vole Record: Ja inch trom In Camm Sie J 13004 i Source Parry Gravel From To ser 30 im 000508 !| vets oe ; I rer " Oeeiion Ril | 0 55 swdandgrave 0 5 5 10 30 Brown clay Brown sandy clay, layers of sand -- uiNy _-- -- _ 55---- t__--58--Rn e-- d-- sha-- le a-- ndbl-- ues-- hale-- , ~-- ~-------- i oo e____ eee i " . oy ----* A -- 1 110 | _ E ---- F 1] " JE | YelTeg rs utc Low 18.3" pumping ster ___ bowspumping 0 Bm-w 0 RoemwaenrKs0 : 0J0 es.Se We0 llTes O0 ta Shes0 De 000000 un ee [1 FE ] -_ ---------------------------- 1 e--e-------- 1 FE -- ee 1 I -- ] . " . 000509 Il > I WELL INFORMATION - DRIFTWELLE I go I" C----- The layne Oohwinoot Company i[ WATRAWELLtT S vCEEArFeR OnNtPS ++ TSEUSTREGRLIYLLINSG + EWATERR TVREATIMENTCEQUEIPMSENT CoOHOn IETS 1198 I Nameof ob__ Little Hocking Date 8/31/84 | Gityorvitage___ Little Hocking sute_Ohio IW wene: TW-3 outs D. Havens g_SR n| wet Lot: ua ote a ( Seon Tom. Che _ Ga [ ee | i Otherwise locateads ___ 300" west of existing wells. Along edge of right-away | 0] WorkBegan: Fo 8/28/84 IT - WorkCompleted: By __8/28/84 Well Dep toPtluhg_ : 55' I (a on mame ew i Casing Record: mn 50" 3" sch. 40 PVC in SCEEW jgintstrom i wt fis tam -, In with Joints from } Screen Record: Type __ Slot #.010 i Amount Dia. Opening Material ; stan gold BC we emsteom_ _ we ween e_ : Type Sata Botom_ BUC OO Hole Record: - 1 -- R-- IJ Rg OC Amo see " Source 11004 ET Parry Gravel A. fom Es 58" 30" 000510 1 we os : | Feet. Feet " Description - = | ) 0 s 5 w__30 Brown clay brownsand clay, traces of axavclav10's sl | "so ws sadadamwa Te ess muesmwe 1 to lf ee - OO - 1 we --_ em vi ---e- I e- e | ------- veTegua: Sie owl 2:0: 1! pumping eve afer ___ hours pumping at _ opm 1 Length of test. neMARKs: tus. See Well Test Data Shicet Dated ye - 1- | - __ i 000511 Gy> WELL INFORMATION = DRIFTWELLS SE The layne Ohio Company Lo e rnEe TeeeLeamcw0ciriAncoImpany wwe.h8TeTeSAeP Nameof sob__Little Hocking ome _8/31/84 GityorVilage__ Little Hocking Sue __Ohio eWerlNtoai in ___TW-A_ pile D.rHeasvens rere mg_SR eet in tne con. Otherwisecloocuattheadsof_n30e0l"l_wteos.t o3f existing wells along edge of right-away Ly Cee 3 sans mc wesszes Weck . coen? oo WorkBegan: _ 8/20/84 errs WorkCompleted: __ 8/29/84 Well Depthto Plug: ---- 54 orien oc ---- o _ oem oy _S1o% 1010 Fv wr maton o a on owes nein LY _ Tesntesemts Soom ewe J". " 5 3 .010 PVC with SCTE joint from. Ctr ees | 11008 | 4 IL Parry Gravel 58 30 000512 - WELL LOG Feet Feet. Description ` " 0 to 5 Brown Clay ! 5 w__ 10 Brownsamdye0l 000a 000y 000 ! 10 w_ 15 Broun sandy clay, traces of eray clay r 15 w__ 30 Brown sandy clay, trace of sand | 30 _w__54 _sand and gravel I 54 w__58 Blue shale [ I f--_-- \-_ 0 O WelToone: Sutic Lov! 18pum. pin 6 __" ___ sher_ howspumpnon____ gam. Leogthoftes ___ hesSeeWelTemOsuSheeDned REMARKS: --- -- ) 000513 1 1 WELL INFORMATION = DRIFT WELLS 1 Bs The laynr e Ohi io oChoemepBaonsy J WATER WELLS + LAYNE PUMPS + TEST ORILLING + WATER TREATMENT EQUIPMENT <Nemeotsop_Little Hocking Sewer & Water ome 11/2/84 ! Cityor Village __ Little Hocking Sute __Ohio T Weine:__TW=5_ oriters:__D. Havens J wy worm a-- fig: Rotary J com Ld Otherwiselocatedas. 300' west of T.H. #3 "WorvkimBegan: A __ 10/30/84 eWoark ComnpletedS : 10/A 30/84Twell DeptoPtigh:__56" TS ~ sia $0 PVC win joimutom wit piston w wn eestom_t_ o __ Saeen Record: Type ___ Diedrich 7 Amount Dia. Opening Material . 5 4 -010 PVC win joimstom k with _____ jointstrom _-- ! Tyofp Seae lat Bottom - PVC plug ! 77/8 ehtrom 0 . 50 anton " [cera arom o sore rom I 15008 1/8x1/4 Smith Concrete 30" 56" I oc C514 Il | wert tos I 32 38 prom ssdy clay. soft --_ Sd RS - 1 Feet Feet 0 _w__28 BrownWasclahy,ed Ssatmipflfes Description -- 1 38 to 41 Gray sand, traces of clay (more clay) = 41 56 Sand and gravel, fine sand 1 56 to 60 Gray shsaploeons 1 32 to 34 sand, traces of clay, brown 37 to 38 Brown sand, traces of clay I 38 to 39 Gray sand, traces of clay | 39 to 42 Washed - 42 wo __a4 sand and gravel I: 42 to 47 Washed ) 47 _w_ 49 sand and aravel I" 41 0__52 Washed , Bo 3 mma el SU vel Teon: Suc Let 18.8" pumsing eve stor ___ hourspumping at som i Lenght tes be. SonWl Tet Dsta hes Oe, || -- ee REMARKS: Ny -- -- ee yg --_-- ee o -- -- Ny _ i] o 000515 r TET Co = The layne Ohio Company EI T ee re weave Hi ron - NameofJob_ Little. locking Sewer & Water : Gityor Vilage _Little Hocking r -- Well No.: TW=6 Drillers: iaD. Havens ET (Range C0 - Otherwiselocated as __300' west of T.H. #4 Date __11/2/84 sue _Ohio tore Rig:_Rotary et County. TFaomI sm Raoea swSWeAmscbeLtees ES-- - WorkBegan: __10/31/84 WorkCompleted: _10/31/84 Well DepthtoPlug: ooo_o wn emtem_ wit pinto SweenRecord: Type Diedrich J 5a 010 Ee we pen vit joao -- 56" " w_ w w w ar. Tyop fSee al at Bottom PVC plug 7.1/8 J tom inchfrom. w 0 60 C: Amount sie 1500 1/6x1/4 Sower smith Concrete From To 300 56 000516 WELL LOG : Feet Fen Desripion 0 w_16 Brown clay, stiff : 16 w_ 36 Brown sandy clay with traces of gray clay 36 w__42 sand and gravel (small) 42 w_ 56 sand, some small gravel (mostly sand) 56 w__60 Gray shale msn i-- -------------------------------------- . . WellTex Outs: StatiLovet 185 3" pumping eve ater hourspumping at opm. Length test rs. See Wall Test Data Sheet Date, REMARKS: ' 000517 il i Cy WELL INFORMATION - DRIFTWELLS ia The layne Ohio Company Il I. aoe tWnEcsrn1 w emap evs eeO r To-- I 4921Vukcan Avenue + ColumOhbiou43s22,8 = (614) 876-1195. | emorsw siete Hocking water & Sever owe 11-25-05 = Ciyorview_yittle Hocking Sue Ohio L wanes s oe Teen TER -- enon pm a J Lo secon Tun. hse i) County. | oer 200-300" northuest of 7a 1 L gpm rer re w_ o _ | Work Began: =19=] Work Completed: 11-] -85 Well Deptot Pluhg: 56" I Ame oe Worthen mei 53% 6" 40 P.V.C. wwien emwJ en_e_w___ with _glue joints from__ 51" wo _ 11" wv Screen Record: Type ___Cook Se 00 Eve wn ita tm > _ J > Tyo Set Bove _.v.. can ote Rn: 8% tr Arun 600 bs. ie tom inch from 0 oto 56" 2 soe __#4 perry fom se 18 000518 r WELL L0G . 0 o_ 8 wardbrownclay, 5000lbs. B.D. r 8 __18 --Med.tohardbrown sandy elay, 0-1000P.D. Tr 8 w_ 28 Soft sandybrownclay,0.0. . 28 __38 --Sandysilt andsoft brownclay,0P.D. | an v__s6 sandandaravel,0B. r 56 %_ _Grayshale 000000 ermine pmmmest regtri------------ate---------- r---w |p --. ttt meetseveress emimret m-- yr --_-- 6. Length tet REMARKS: vs. Se Wall TestData hese ted Bencollected watersamples andvaterstaticlevels ---------- era -- -------- -- ee-- ------ --ee -- ---- ee ees erE--eremee ee e ----e ee ce r ----eteg eter e eeeet e een ---- rr ------ eee -------- - 000519 L274) Reynolds Supply, Inc. : LEN COMPLETE MUNICIPA&L INDUSTRIAL WATER SYSTEMS Uy FORMATION LOG OF WELL SurtingOste 10/21/81 finned 1/2/87 wenNumber TestHole 10 uner LITTLE HOCKING WATER DISTRICT Location . TOTAL DEPTH FonuaTion Cs Top Soil and cla Tow | 5 | cla : le Is clay ozo | 5.| ca as 1 clay 25 - 30 To3s [oc| |51 coarsesand coarse sand and and gravel Gravel oho Jj. - ks Fo Fine sand and gravel Fine sand and gravel i 30 50-53 5 ne sand dnd some gra Sand and gravel - 5 [| sedroa | Ce AMON somata 00520 weer *. _.] Reynolds Supply, Inc. : ERD COMPLETE MUNICIPA&L INDUSTRIAL WATER SYSTEMS %y FORMATION LOG OF WELL "aring Oate--10/22/87 Finished 10/22/87 ell NumberTestbole11 Swner LITTLE HOCKING WATER DISTRICT|qcuton ) TOTAL OEPTH FORMATION Lost soo dots 5-20 22s 2, - 30 3 3-40 andy: topsall and 15| cay enna [Ts| senay en i Sandy clay |g| sana clay Sand (wet) [5| Clean sand and araver | 5 | coarse clean sand and gravel EH - us ye Coarse sand and gravel Coarse sand and gravel f - 550--6055 0-6 arse sand and gravel Fine sand and gravel Fine Sand : L I ' r 1 }Ta Vater Lever J-- . 000521  i3iE) Reynolds Supply, Inc. . TIRED COMPLETE MUNICIPAL & INDUSTRIAL WATER SYSTEMS %Y FORMATION LOG OF WELL "Starting Date 10/28/87 Finished 10/28/87 Guner LHITTO LE CKWAI TER N DISTG RNCT \guyion p-- = loose Top Soil TS 0-1 [5| Ssaannddyy ccllaayy "a0 | 5.| sedvelay 0 [a| vet sandy clay 25-30 | 5 | uetsaycloy T0- [5| Coarse sand and gravel | Te"iuo | ra-- | coI arse sand and aravel EE s Coarse sand and gravel 0- [5| coarse sand and gravel Css -59 Fine sand and gravel 5 | secdrom well Numper TESTHOLE12 v . FonuATion - - i PR - | 000522