Document jm7Vn5KVm5kbKDvY1d4j2Vj2O
.
weSpey Merits
SSoockmanmMeNe5514-1000
AR 226 _ Ings
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( R:e926
MR 6% 64k
FL. 0803-01378
3M
August 1,2003 IEEE i
| WHA,
DOfofciucmeoefnPtoClolnuttriooln OPfrfeivce:nt(iDoCnOa)nd Toxics (OPPT)
US Environmental Prote tion Agency
WE1a2P0sA1hiECnaogsntis,otinRtoDutoCimo2n60A44v26e80nt , MW.
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VIA FEDERAL EXPRESS = o3n2
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Attention: Docket No. #R-226 and the FYI Docket
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3
Subject: Su`bMmairscshi1o3n,o2f0M0o3niatnodrAinPgFDOatUasePrusrsLuOaIntdtaotetdheMa3rMchLO1I4,d2a0t0ed3
Dear Sir or Madam:
"ATPhiFs OrepUosretrsisLsOuIbmdiattteedd asrurcsuhan1t4,to20th0e3.3TMheLertetpeorrotfIins ttehnetfi(rsLtOsIu)bdmaitsesdioMnaruncdher13t,h2e0L0O3ISanodftthhee MresNultasndofDgercaotuunrd,waAtLe.rAasndywoausktneowwa,tepremroflnuiotrooroicntganatoitcheac3idM(mPaFnOufAa)ctwuarsinpgresviitoesusaltyCporttoadgueceGdroatve, tfhleusoerosiptoels.ymeIrnmaaddniutfiaocnt, ursicngofopPerFaOtAionis.continuing at the Decatur site,aspart ofthe Dyneon
pArsesneontceed oifn PthFeO3AMhLaOsI.bemnonuintodreirnwgayofawtatshteeDweactaetrurtraenatdmCenotttpaagnetGerfofvleuensitteasndfograronunudmwbaetreorffyoerartsh.e
"tThhriosumgohnpietromriitnsgwwiatsh ilnoictailatreedgualsaatorress.ulUtnodfer3Mthevo3lMuntLaOrIy,c3oMmmaigtrmeeendttsoacnodn/toirnupelatnhsisemstoanbiltiosrhiendg in
oPrFdOerA,tocaosmspelsesttehde attretnhde:etnhdaotfar2e00li2k.elyTthoeoDceccuartausr amornesiutlotroifngthper3ogMrapmrowdausctcioonntpihnauseed-foourttohfe
a`dmdaintuifoancatlurpiunrgpoacsteivoiftiaess:actsstihnegstthee ainmdp,acint tohfisDymnacnnoenr',smoenegtoiinnggDuysneeoofnA'sPmFoOniitnofrliunogrcopoomlmyimetrment2s
under the APFO Users L OL. Because the Dyneon and former 3M manufacturing operations are =o,
blyoca3tMedaantdthDeysneaomne.site,
it
was
determined
that
monitoring
would
be
conducted
and
reported
jointlSy, 3S877 = 5%
ImnetohuordMolaoygy7,, 2s0a0m3pllientgterdltaonWsaarndd pPernobpeorstehdyteosftEsPchAe,duwleepfrorovfiudteudreawdaesttaeiwlaedtedresacnrdipgtrioounnodfwtahteertes=t~s 5&
msiotneistdoirfifnergeadtitnhseCoomtetargeepGertosvferaonmdthDeecfauttuurrespitreso.grPalemaosuetnloitneedthiantopurreMviaoyus7mloentietro.rTihnegsaet these &
doitfhfeereLnOcIeSsaanreddiinscmuisds-e3l00b3e.loBwacinkgtrheoucnodurasnealoyftriecvalierweiponrgtsthoerretshueltmsooniftmoorniintgorairengvcoolnudmuicntoeudsparnidor
are available from 3M 01 request.
CONTAINneo
w
Page ODfofciucmeoefnPtoClolnuttriooln OPfrfeivceent(iDoCnOa)nd Toxics (OPPT) US Environmental Protection Agency As noted in our LOI, 3 has previously conducted monitoring for PFOA in surface water, sediments and fish in the vicinityof the Decatur ste. The latest resultsof this monitoring, carried out in 2002, were submi ted on July 9, 2003 to the OPPTS AR-226 Docket as partof the ongoing 3M investigationofperf uorochemistry. As described in our May 7 letter, 3M will update these. `monitoring results in 2004 and 2006. It should also be noted that under the APFO Users LOI Dyneon is conducting ai dispersion modeling for ts Decatur operations. Dyneon will submit this information to EPA by January 1, 2004, COTTAGE GROVE, MN SITE MONITORING DATA `The 3M Cottage Grove facility (th site) occupies approximately 865 acresofproperty in Cottage Grove Minnesota. The ite is bounded by open space and farmland on the north, the Mississippi River on the south, a municipal wastewater treatment plant on the west and sparsely populated open space to the cast. Manu acturing operations began at the site in 1947 and existing records indicate that PFOA production bigan about 1976. Site Setting and Hydrogeology "The site is located on a flat to gently undulatingbluffoverlooking the main channel ofthe Mississippi River. Both the southeast and southwest sidesofthe site have been steeply incised by stream activities. The si is underlain by glacio-fluvial deposits which increase in thickness from north to south across the site. These deposits are underlain by the Prairie Du Chein Group and the Jordan Sandstone Formztion. The St. Lawrence Shale Formation (a confining layer) is present at the baseofthe Jordan Formation, approximately 200 feet below the central portionofthe site. Six high-capacity pumping wells supply water to the manufacturing operations at the site. The `groundwater from fourcfthese wells is blended in a water supply distribution system on a coninuous basis for various site needs including production, sanitation, and limited potable use. Bottled water has been provided for a numberof years at the site for drinking water. The remaining two wells are utilized independently on a periodic basis for site-wide fire protection and non-contact cooling att site incinerator. These six high-capacity wells were installed during the period 1947 to 1970. Fcur of the wells are drilled into the Jordan Formation and twoofthe wells are located in unconsolidated alluvium near the Mississippi River. However, all pumping wells obtain groundwater fron. the surficial, unconfined aquifer. Although historical water level data indicates a natural hydraulic gradient toward the river, pumpingof the wells (which started in 1947) has created a persistent oneofdepression in the ground water beneath the developed portions of the site. The coneof depression effectively limits movement ofground water from the site to the, adjacent river. All groundwater used for the production processes is treated afte use at the site wastewater treatment facility prior to NPDES permitted discharge to the Mississippi River.
2
:
Page3
Document Control Office (DCO)
OUfSfiEcneovifroPnolmleunttiaoln PPrroetve.c:tntiioonnAagnednTcoyxics (OPPT)
Monitoring Results
Groundwater Monitoring;
Starting in 2001, 3M cor ducted groundwater monitoring for fluorochemicals as part ofa more
e`mxotneintsoirvienginwvaesstiignaittiiaotnedcatroriaesdseosust
in
the
conjunction with the State
impactoffluorochemical
of Minnesota.
production on
This additional
the groundwater
beneath the
ofmonitori
site. Init
ng wells.
i
ally, monitoring was carried out at fiveof the
Basd on understandingofthe hydrogeology
production wells
and the results of
and a
2001
number
and 2002
sampling, 3M reviewed the
revised monitoring progiam
scopeof groundwater monitoring to be conducted
adoptedby 3M is described in our May 7 letter to
under
EPA.
the
As
LOL The
explained
in that letter, 3M selected five ground water sampling locations for semi-annual PFOA monitoring
ona going-forward basis. The five monitoring points were chosen as representativeof the
following site conditions (See attached site map):
MonitorWingTPox EX M[AWT]
R War supplNyh G WO!ust ystem
Samplingof the water su2ply distribution system was substituted for samploifnthge individual high-capacity pumping wells because the water that supplies this system is a compositeofwater drawn from these wells and therefore is representativeof groundwater throughout the developed
portion of the site.
3
A
Pag4e Document Control Office (DCO)
`UOSffiEcnevofirPoonlmleunttiaoln PPrroetvec:tnitioonnAagnednTcoyxics (OPPT)
PFOA data from the five monitoring points listed above was collected on June 5, 2003.Theresults of the 2003 and previous sampling events for thesepointsare presented in the table below.
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4
*
Pages Document Control Office (DCO) OfficeofPollution Prevention and Toxics (OPPT) US Environmental Protection Agency
Rines2u0l0t3s oafregrsouumnmdawraitzeerdrianontihteoTrainbglefoartstaacmhpeldintogtlhoicsarteipoonrst.thTathewerreseulttesstperdeisnenptreedviaobuosvyeeaanrsdbiuntthneot
attached Table indicate t1at groundwater 2001 to 2003, notwithstending the recent
levels of PFOA have remained cessationofPFOA production
relatively at the site.
constant
from
sPalemapsleentooteprtohvati,deduarminegasIulregorofutnhdewaptreecrimsoionnitaosrsioncgiaattedthwisitshites,a3mpMlehacsolcloelclteicont,edpraefsieerlvdadtuipolnicaantde satnodrapgreovaisdweeslal maesalsaubroeraufotrhyeprporceecdiusrieosn.asTshoceialtaebdorwaittohryladbuoplriactaotrey psraomcpeldeuriesst,akbeunt innotthweitlhabsoraamtpolrye. collection, preservation ar storage procedures.
ASespdteesmcbreirbe2d0i0n3tahnedMMaay772l0et0t4er,anmdonaitsourmimnagrpyoirnetpsosrtamopfltehdatidnaJtuanweil2l0b0e3 pwriollvibdeedsaomnplAeudguasgtai1n, in 2004.
Effluent Monitoring
g"Tehneersaitteedhaast aComtutlatgie-pGhraosveed. waTswtoeowfattehretrseyasttmeemnsttprleaatntinthoartgainsiucsewdasttoewtraetaetrasllapnrdoctehsestwhiarsdteiswaatners oarregacnoicm,bibinoeldogaitcaalsitnregaltenideinstchsayrstgeemp.oinAtl.l Tofhtehsee twraesatteedwaptreorcsesasrewatshetnewcaotmebrisnferdomwitthhesneono-pceornattaicotns cooling and storm water und then discharged to the Mississippi River. SSianmcpeliJnanguhaarsyb2e0e0n0,petrhfeoMmedComtotnagtehlGyrobevgeipnlnainntghiansJcaonnudaurcyt2e0d0P3FiOn Aacacnoarldyasnicseofwiittshetfhfeluent. rCoenqturiorlemAegnetsnocfy 3inMtsheNmFonDtEhSlypeDrimsicth.arTgheisMoinniftoorrmiantigoRnepisorretpso(rtDeMdRt)o.thEefMfilunennetswoatsatPeowlaltuetrion spoaimnptlefsoraarlelocfotlhleectpeldanatt'thperopclaensts owuatsftaelwlaotnertsh.e MAilslsissasmipppliesRiavreer.colTlheicsteids tahse2c4-ohmomuorncodmipsocshairtgees. and duplicate analysis is zonducted for each sample.
5
*
Page 6 Document Control Offic: (DCO)
OUfSfiEcnevoifrPoonlmleunttiaolnPPrroetventtiioonnAagnednTcoyxics (OPPT)
`The following table presents the monitoring results of the Cottage Grove process wastewater effluent discharged un *Mid nnese ota NPDES Permit No. MN000149, Outfall SD 001. The data
includes resultsofall menitoring events in 2003 and in previous years.
Efftu3enMt MCootntiatgoeriGnrgovReesults
PFOA An[alSysaismpfrlomeSDDat0e01|
|Yanuary-March 2000
Tego ADvaetraaPgoeiontfs8
PFOA Gr)
F[oBmeaacreyms3br0205002
ne |1 Tor
[FFaeburunar 22000055 Average |[707]
[February 2003
[VFieabrrcuha3r0y 32008 Average
|[ 2/12/03oa|
ieaarreclh:200038 Aver20ageas]|
[Apr 207
[A[pAprriil22067033 Average r BOe ee o
May 2003
[NVaayy 22000035 Average rSr h r)
Pfuunnec 2300033
ON ies|
[une 203 Average Err
`As shown above, PFOA. evels dropped substantially from 2000 to 2003. Monthly PFOA levels
remained fairly constant hroughout the first haofl 20f 03with a substantial decrease noted in June. Data obtained in future i onths will enable us to determine whether effluent concentrations will remain at this low level and therefore have declined as a result of the production phase-out.
Page 7 Document Control Office (D0) OUfSfiEcnevoifroPnolmleunttiaoln PPrroetveecnttiioonnAagnednTcoyxics (OPPT)
`dTihsecheaxrpgeecstewdouilnd-bstereexamtrceomnceelnytrlaowt.ionAsosfuPmFinOgAainn atvheerMaigsesibsassieppfiloRwivfeorr rtehseuMlitsisnigsfsripopmiwRaisvteerwaotfe7r500 `McoGncDen(tmrialtiloinonwgoaullldonbseaadbaoyu)t 3in0dpapnt e(fpfalrutesnptefrltorwilolifona)b,ovuetr3y nMeGarDt,hethdeeteexcpteicotneldimiint-sotfrPeaFmOAP.FOA
DECATUR, AL SITE MONITORING DATA
`aTphepr3oMxDiemcaattu2er0ls0yitaecriessa.ppTrhoe icmuartreelnyt D90y0neaocnresflwuiotrhoptohelyamreera porfotdhuectmiaonnuffaaccitluirtiiensagrfeacciloi-tlioescabteeidnwgith 3flMu'osroocthheemricmaalnsu.faTchteurlianngd osupreroautnidonisngattthheesistieteiws hperreedo3miMnapnrtelvyioiunsdluystpriraolduacneddcPomFmOerAciaanld. oCthheermical mmaannuuffaaccttuurriinngg polpaenrt.atPiornosdubcetgiaonnaotftPheFsOiAte aitn t1h9e6s1i.teInoc1c9u6r3r2etdheinfa1ci9l9i9ty-2w0a0s0.expanded to include a film
Site Setting and Hydrogeolo zy
`wThhiecgh,eoilnotguyrnb,einseautnhdetrhleai3nMbyDeaccahteurrt s(ihtaercdonrsoicskt)solafyear.deTnsheerleismiedsutuonmeuunnddeerrllaiiensbtyhelirmeessitdounuem(tboedarnock), aofppwraotxeirm-baetaerdienpgtfhraocftu1r5e0s cfeoent rboellgorwogurnoduwnadtesrurfflaocew.asTshoecinautmebdewri,thexttheinst,syosrtieemn.taWtiaotne,ra-nbedairnitnegrcfornacnteucrteison loibmseesrtvoendeianptphriosxuinmiattaerleyn1ot0 cfcezntttihniucokuso,ccaunrdsdboenlootwytiheeldupspigenrifliicmaensttqounaentliatyiere,s aonfdwaatcetrs.asAanlaoswpehra.ltic `confining unit for the limestonz.
u`Tsheedaaqtuitfheersibtee,loawndthtehe3DMecfaatciuritayraenadinthgeenCeirtayl,ofisDpercoavtiudredisbnyotthueseDdecaastaurwamtuenricsiupppally.watPoetrasbylestweamtewrhose
source Study
is the failed
Tennessee River. Samples of the to detect the presence of PFOA at
Decatur drinking a detection limit
water of 7.5
taken as part of the 3M ppt (partspertrillion)
Six
Cities
BgreocuanudsweaotferthbeeplroewsetnhceeDeocfaotutrhsrictoentaanmdinrealnattse,d 3hyMdrhoagseoulnodgeyr.taCkoepnieexstoefnstihveesestsutduideisestaorcehaavraaicltaebrilzeeotnhe
sreeqmuiecsotn.fPionteedntsiyosmteemtsr.ic dUantcaofno-itnheedsgirteouinnddiwcaatteerthoacteugrrsouwnidthwiantetrheocreeusrisdubuomt,heapsikuanrcsot,nfainndedtoasndome
etxhteeTnet,nnsehsasleleowRifvrearc.turGersowuintdhvinattehre
limestone. flow rates
Groundwater flow in the residuum and
is gencrally to limestone are
the north and east toward extremely slow and wells
installed 0.5 gpm.
in
both
the
residuum
and
limestone
horizons
exhibit
very
low
yields
of
typically
less
than
`Tphleum3esMasrteuddioewsnshgroawditehnatt othfert:heairneatctwiovemalajnodrfilglr,oaunnddwdaotwernpglruadmieesntatofthtehesitce.hemTihcealtwmoangurfoaucntduwraitnegr nfaecgilliitgyi.bleThreelsetausdeise1s0sthhoe wTetnhnatestsheeeplRuivmeers. aTrheispriesdcoomnisniastnetnlty wciotnhfitnheedrebseunletastohft3heMsistuerfaancde hwaavtee.r 2mo0n0i0toarnidngl,espsrtehvainou5s0lyppstubimni2t0t0z2d).to EPA, which show very low PFOA levels in the river (1- 2.65 ppb in
!
Page 8 Document Control Office (DCO) Office of Pollution Preve tion and Toxics (OPPT)
US Environmental Protection Agency
"The 3M studies showtha:there are two major groundwater `plumes at the site. The two
gmarnouufnadcwtautreirnpglfuamcielsitya.reTdhoewsntugdriaedsiesnhtoowftthhaet itnhaectpilvuemleasndafrilel,praenddomdionwanntglryadcioennftionfetdhbeencehaetmhictahle
site and
Surface
have
water
nmeognliitgoirbilnegr,zlperaesveisoutsoltyhesuTbemnintetsesdeteo
River.
EPA,
This is consistent
which show very
with the
low PFO
re
A
sults of 3M
levels in the
river (1- 2.65 ppb in 200) and less than 50 ppt in 2002).
Monitoring Results
Groundwater Monitoring
Based on its extensive si: investigations, 3M developed a PFOA sampling and analysis program in
2001 to assess under the LOI,
the PFOA levels 3M selec:ed the
in the site following
groundwater. In developing its wells for groundwater sampling
strategy for and PFOA
monitoring. analysis going
forward (see attached sitz map):
MJ oMnointitoorriinnggLLooccaattiioonn SSwieteCCoonrditieorn
Wells 226R & L.
Ltroecaattmeedntea--stmoofniintaocrtsibvaeclkagndrfoiullndancdonsdoiuttihonosf iwnarsteeswiadtueurm and shallow limestone groundwater
Wells 220R and L.
Located northeastofinactive landfill - monitors predominant flow path of plume in residuum and shallow limestone zones
Well 320L
Lfolcoawtpeadthnoofrthpolfuimneactive landfill - monitors secondary
Wells 327R
Located in the former incinerator area -- monitors residuum groundwater near source area
Wells 310R & 317L.
gLorcoautneddwaitnetrheflCohwempiactahlwaPylsanitn --thmeoCnhiteomriscadlomPilnanatnt
Groundwater
PFOA results
samples from
are preseated
tihnetheeigthatblmeonbietloorwi.ngWiptohintthseweexrceepctoilolnecotfedthoenWJeullly
15-16,
310R,
2003
these
and
the
`monitoring points are ifferent then those sampled in previous events, but providae more accurate
representation ofthe gioundwater conditions for the measurement of fluorochemicals.
"
Page 9 Document Control Offic: (DCO)
OfficeofPollution Prevention and Toxics (OPPT) US Environmental Prote:tion Agency
As at Cottage Grove, 3M collected field duplicate samples during the monitoring to provide a
`measureofthe precision associated with sample collection, preservation and storage as well as laboratory procedures. The laboratory duplicate sample is taken in the laboratory and provides a `measureofthe precision associated with laboratory procedures, but not with sample collections, preservation or storage p-ocedures.
As indicated in the May 7, 2003 letter to EPA, these monitoring locations will be sampled again in
RDueacuesmtbe1r22000083 and Junc 2004 and a summary reportofthe cumulative data will be provided on
The groundwater data fo recent and previous monitoring events are shown in the following Table.
`GROUNDWATER WELL MONITORING DATA [FOR THE 3M DECATUR, AL MANUFACTURING SITE
SAMPLE|
D
[TSR|
SAMPLE | PFOA (ppb)| PFOA (ppb) PFOA (ppb)| PFOA (ppb)
Da3AsaT7sooErr | Tow [9%Lab Dup
|
iow | fois Field Dup
Average
|
EaI0]
001|__00% | oo | 007]
SFrassoor [or rss
w3aasseorT [|Teor[ | eT s o | eo o | T[oTnn_|
6T0m3 [150 | Tse | 1s | 15%
7T6o0nsy || wTorc|| stso| | Teoae|| w10a7||
7e6o0s3 || NQ9| % | N0b95| | Nobs || W0b%]|
T6o0os || Nmpmo| |aW0b || mNso | | 7Nb]|
As indicated by the data resented in he Table, here i wide range of PFOA levels measured in
the groundwater beneath the site. However, the data suggest a low likelihood ofoff-site: `groundwater contamination. For example, the levels in the well 310R during two sampling events show little change, whic: is predictable considering the slow movement ofground water explained
above. In addition, wells 220L, 226L, and 310L show extremely low to non-detectable levels of
PFOA. These wells are drilled into the aphaltic limestone, which acts as the confining layer that prevents groundwater movement downward. These factors indicate that the groundwater is not `moving offsite and thercfore would not represent an exposure pathway for PFOA.
9
A
Page 10
Document Control Office (DCO)
OfficeofPollution Prev.:tion and Toxics (OPPT)
US Environmental Protection Agency
Effluent Monitoring
3M's Decatur, Alabama manufacturing facilities
Utilities. and directly from the Tennessee River.
obtain process water from the Cityof Decatur
In addition, manyof the manufacturing operations.
uwtaisltizeewantoenr-scofnrtoacmttchoeo3liM1ganwadtDery,nwehoincmhainsoufbatcatiunreidngfroopmertahteioTnesnnaeresstereeatReidveirn.thAelslitper'oscweasss.tewater
treatment facility. The system contains both physical-chemical and biological treatment. Process
wastewaters are mixed with non-contact cooling water prior to discharge to the Tennessee River.
Twahsetediwsacthearrdgiesicshpaerrgmeitatni]:dcuonmdbeirneAdlapbraocmeassNPwaDsEteSwaPteerrm/intonN-o.conAtLa0c0t0c0o2o0lSi.ng
Theprocess
water is designated
as
Outfall 001A and 001, respectively.
As explained in our May 7 letter, wastewater sampling at the Decatur site for PFOA analysis is
being conducted on a quarterly
treated process wastewater and
basis. Samples are
non-contact cooling
collected at
water. The
Outfall
outfall
001, which consists of
discharges to Baker's Creek,
`which in tum empties info the Tennessee River. All samples are collected as 24-hour composites
`and duplicated analysis is conducted for each sample. The specific sampling and analytical
protocols were described in 3M'sMay 7, 2003letterto EPA.
{he historical dats and ths 2003 montoring events. `The following table presents the PFOA monitoring results for the Decatur wastewater effluent
discharged under Alabania NPDES Permit No. AL00020S, Outfall 001. The data summary includes
3M Decatur
2" Quarter, 2003 and Historical Events
`Outfall 001 FC Sampling Results
See55s5ie%Due TF0o0o1
TVamEiar78y,,0700037
[Resul]Dupl| iAcveraagete|
As indicated by these dat}, there has been a decrease in the levels of PFOA in the effluent
discharged to the
of the production
Tennesiee River. The
phase-cut of PFOA at
overall reduction
this site, and the
throughout these
improvements in
5 years is mainly a
the fluoropolymer
result
production processoccur ing at the Dyneon operation. Continued decreases in the effluent
concentration are anticips ted becauseofongoing process improvement efforts.
10
1
Page 11 Document Control Office (DCO) Officeof Pollution Preve ition and Toxics (OPPT) US Environmental Protection Agency
In addition, the results of Tennessee River surface water monitoring recently submitted to the AR2Je2v6elDsodcokwentsitnrdeicaamtefrthoamt PheFO3AM lDeevcealstuirn tOuhtefrailvlerarheabveeldoewcldienteedctsaibglneifliicmainttsloyfas0.w0e5ll0.pIpnb.fact, PFOA
HISTORIC MONITOFING DATA SUBMISSION As noted in the LOI, 3M s monitoring programs for the Cottage Grove and Decatur sites have
ihnacslbuedeend sreapmoprltiendgtroesluolct;alfaogrenoctiheesr,f3luMoirsocshheomritclaylpsrboevsiiddiensg PaFcOoAm.preWhheinlseivmeuscuhomfmatrhiysofinrfeosrumlattsion
from those monitoring programs as part ofa separate submission to the AR-226 Docket.
In summary, this letter reports resultsof wastewater and groundwater monitoring at the Decatur and
Cottage Grove sites. These data fulfill the commitmentsof 3M and Dyneon under the March 13, 2003 3M LOI and the March 14, 2003 APFO Users LOL If there are any questions, please contact the writer at the address drovided below.
Stadt Sincerely,
MWicahaeil Ad4. Sa4u,foro Jol
DSiarfeecttyora,ndEnRveigruolnamteonrtyal4,fHaeiarlsth,
3M - Bldg. 236-1B-10 P.O. Box 33331
S6t5. 1P7au3l3,6M3N745(5p1h4o4ne)
6E5m1ai7l3:3-m1a9s58ti(foarx)o@mnm com
cc: Mary Dominiak -- Rom 4410
Avachments
n
"
3M COTTAGE GROVE HISTORIC GROUNDWATER MONITORING DATA SUMMARY
-
m=o=e es 05/18/03
NO
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ge G8 | ox lo
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