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LOS ALAMoS NN11!ON1\L LAIJO~N1101t· :;

mNV!nO~M~N~AL ~~S~OttA~to ~ecotds ProdessiN~ PUdili~

~R Rmdords Ihde~ 'or !

ERID NOI 54333 DA'rS RECEIVSDi 4/16/96 PRO~~SSORI ~~A p~ CoUN~1 23

PRIVILeGED (~/N) l N RECORD CATEGORYl P RECORD PACKAQm NO,I NIA

FILE' FOLDERS MIA

::: ., I·:

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CORRECTION (V/N) j N CORRECTED NOlI MIA CORRECTED eVa N/A ~,~

AR (VIM) t Y. AR DESCRIPTION (DIG)! NIA

MISCELLANEOUS: MIA

30824 1 11111111111111111111111111111111111

THIS FORM IS SUBJECT '1'0 CHANGE. CONTACT RPF FOR LAT~ST VERSION. (JAN. 1996) ;" ..

4 -.+

I , * , I / J +; ;:

Las Alamos National Laboratory ENVJRONMENTAL RESTORATION

Unlvonlty of Cullfornla ' Envlronmenlol Rostorstlon, MS MOO2 Lor Alamos, New Moxlco 87845 50546748081FAX 505-685-4747

U, SI Doperlmonf olEnergy Lo8 Alsmoa Afna Olflce, MS A316

ew Mt~xlco 87544 605965*7203 FAX 505*8t36*4504

bate: Apdl 2, 1996 Refer tu; EM/ER:Q64 76

Mr, David Neleigh NM Federal Fecllltles Section Multlmedla Plannlng and Permlttlng blvlslon U,S, Envlronmontal Protection Agency Region 6, 6PD.N 1445 Ross Avenue1 SUhe 1200 Dallas, TX 75202-2733

SUBJECT! RESPONSE TO THE NOTICE OF DEFICIENCY (NOD) FOR POTENTIAL RELEASE SITES IN TECHNICAL AREA ("A) 3 B

Dear Mr, Nolslghl

Enclosed Is the Los Alamos National Laboratory's response to the Envlronmental

Protectton Agency's NOD on the Resource Consetvtdlon and Recovery Act Feclltty lnvestlgatlon Report for poterrtlal releaoe sltes In TA.30 (former Operable Unlt 1132), A

certlflcatlon forin signed by the appropriate offldals 19 also enclosed, Thls reaponse 1s

due to your' offlce on Aprll 9, 1996,

Please contact Gene Qauld at (605) 6674402 or Everett Trolllnger at

(505) 667-5801 , If you hwe any qUestlot?s ebout thls response to the NOb,

Slncerely, I

Manager

J J n l l b p

Enclosure(5): Response to NOD for PRSs In TA.39 (2 coplos) 1 ~ p # 1 6 1996 1 Certlflcatlon

b . Mt, Nsleigh EMIER:96-176

-2 - April 2, 1996

Cy wlenc,): S, Anderson, NMED-AIP, MS J993

B, Garcia, NMED-HRMB D, Grlswold, ERD, AL, MS A906 J, Harry, EMIER, MS M992 8, Hodltschek, NMED-WRMB R, Kern, NMED-HRMB N, Waralnq EM-453, DOE-HQ TI Taylor, LAAO, MS A316 E, Trollingar, LAAO, MS A316 N, Weber, Bureau Chief, NMED-AIP, MS J993 J, Wnlte, ESH-19, MS K498 S, Yanlcak, NMED-AIP, MS J993

(3, GOUld, ESA-DE, MS G787

RPF; MS.M707-

Cy (wlo enc,): TI Baca, EM, MS J591 T, Glatzmaler, DDEESIER, MS M992 D, Mclnroy, EMIER, MS M992 G, Rad, ERD, AL, MS A906 W, Spurgeon, EM-453, DOE-HQ Jl Vozella, LAAO, MS A316 EMlER Fils (CT #C056), MS M992

C E R I I FIC ATION

I certlfy under penalty of law that these documants and all nttclahments wora prepared under my dlractlon or supervlslon In uccordanca wltti a syetorn deslgned to assuro that quallfled personnel proparly gather and avaluata the Information submitted, Basod on my lnqulry of tho person or persotie who manago the system, or those persons dlreally rasponslble tor gatherlng the Informatton, 1ho Information siibmltted Is, to the best ot my knowledge and belief, Ir'ue, accurate, and o o m p h , I am awuro that Ihero are signlfloant ponaltles tor subrnlttlng lalw Infart~imtlon, lncludlng tho posslblllty of fino and lmprisonmant for knowlng vlolatlon,

Doaument Tltle: m o The For PO- - h h

Name: Dote: c\-y -96 Los Alamos Nntlond LaboratoFy

or

Tom Baca, Program Director Envl ron menta I Ma nag em en t

Date: V Y k Environment Projects Environment, Safety, and Hoallh Branch 0OE4.o~ Alamos Area Offlce

or

Theodore J, Taylor Program Manager Envlronment Restoratlon Program DOE=Los Alamos Area Off Ice

NOTICE OF DEFICIENCY COhlMENTS RFI REPORT TA-30

GENERAL COMMENTS

Commont 1 : (Sltss in Aggregate 2), The report should provldo addlllannl informallon concernlng curront and hlslorlca/ waslo lrandllng pracl/cos, and c/lnracler/sllcs of Iho curranl and h/sloricn/ \vnslos, waslo inlormnllon should include waslo typos and cliaraclarltalion dds , ralos of ~ s l o genornllon, waslo rnunngement praclicos lrorn gonerallon lo' disposal, and roloroncos l o w rocords 01-lhose ncliwlllos (US, €PA OSWER 1989, 1994), Chonilcnl nnnlysls of lhe waslos should bo porkmod lo pfovldo compound. spoclfic lnlormllon (US, €PA OSWER I989), For examplo, no lnfornrallon Is prosonlad cotrcornlng llro (I) chilraclorlsllcs and volumes of llie wnslau s1orod In Arms I, 2, and 3, (2) ago ol Aron 3, (3) longlli ol limo that wastes are storod In ttioso arms, (4) lroquancy ol wnsto dlr;posnl, (5) rocords 01 wnslo managernenl, (6) ul//niafe fnlo ol rvuslos lrom /hose nruas, or (7) h/sIor/c drnlnngo pnlhwnys, provluus strucliiros, m d the addltlon or romovnl olpawod pirrkiny or storaga aroas, According lo EPA Uuldnnco and pollcy direcllwas (US, €PA OSWER 1939, 1994), llto rogpondonl sliould collocl andprosonl unit. spocllic data necessary lo choractorlm onclr conlarnlnnrit sourco-/lint is, ancli PRS, Tho ropad should be revlsad lo lncluda llils Inlurmtillon, If nu rocordv me avallnblo, LANL slrauld so slnlrl,

Dlscuuslon: 01 Ihe PRSs In Aggrognlo 2,lho only ono currotilly baltig usnd Ili PRS 3D4I02(0) Aron 1 , rig a sotollllo slorogo n m for Iiatordous woslo, Slotod wnolos cotiolsl 01 solvotib or atlIiaslvo* conlarnlnnled rngs or papor wlpos, wlilch nro conlolnod / t i n covorod GGqjol, drutii allunlod oil n ~ i ~ i l l o l , All ~ivnlloblo Inlormallon on lilslorlcol wasto nionagomonl procllcoo was proootilod In Socllons 2,3 arid 5,2,1 01 Ilia OU 1132 RFI Work Plnn,

Proposod Toxt Changos: Nono,

Commont 2: (Annlytlcd datn), Sartiplos aro doslgnntod as AAA3G02, AAA3003, and so lotilt, Howovor, souoral sample nunrbors ti ra mlmlng ftonr tltls sequonco (lor oxnrriplo AAA3004, A A A W I I , A A A W I, AAA3031, AAA3036, AAA3Gd0, AAA3044, AAA30ds, AAA3052, AAA36551 AAA3O5BI AAAJo@, find othors), Explain Ihe nurrihcrlrtrj systani nrrd llro abtlonce ol llroao ~clmplo nurnbars,

O I R C U R R I O ~ I Tho ransons lor tho abtlotico 01 tho rotoroncod sntnplo tiuiiiboro ciro n5 followu! euiiiplo A M 3 0 3 1 Is o field blank; snmplos MA3030, AM30rl0, AAABOrlr l , A A A ~ G ~ ~ , AAAXi52, AAAljoSU, nnd #&so2 nro rlnsdas, According lo tha snrnplo collnallon lug ntitl tho log book otildos rocorclod rlutltig sattipling, somplo nulribors AM3004, AAA3008, AM3021 , nndiAAA30L;G wnro tiol naslgtiod lo ntry collaalod snhiplos,

The snniple numborliig syelatm I9 no1 alwnys aoclilotillal bocaueo ontriplo tiutiibarn tito gotiutolly praasslgnod In nnllclpallon 01 sttmplliig~opoo~fla looltlros, I f lhoso loallitus cnniiol ba Miiiplud, l l io prorisstrfnod nuinbar Is not rotisdgnocl lo nnollior omttipla, Cotieoc~lIofit1y, 11 1110 uclud tiilltibar 01 6titiiplue ltikoii 1s no1 ldonllcnl lo ltio nunibor Ilitrl WCIY unllolpalad, Ilion lliu ontnplu iititiibote will tiol ba uoquonllnl1 All 01 Iho useabla dula woro irs~d It1 dovoloptng alto rocanimotidnllotis atitl aro proeonlad In llio IW ropotl,

Proposod Toxt Chnrrgasi Nuno,

NOD Rosponeo an RFI Fluport dalad Apt11 20, 1099 f A S 9 (totmet OU 1 132)

DlsaUstllon: For lho Phuso 1 lnvonllgallon work al Aggrognloa 2 ntid 4 doocrlbocl / t i tho RFI roporl, snmpllng locallon.s woro soloctod b a e d upon vlsual obsowallon, bocriuso tloltl acroanlng roeulla viato In no ctiso sutllclonlly olovatod lo wurrnnl blnsltig a otinrpllng locallon, I tinotnucli ns tlold oerouiilng dnla V ~ Q I O no1 usod lo blns sampling tocnllono, provldlng lhosn dnla nnd llold tioloa ooonio oxcounlvo, 'l'hoso dnla rasldo In IANL's Rocords Procaselng Faclllly (RPF) ne pnrl 0 1 lho hlnlorlcul tocord lor ello ncllvlllos, Flotd Rcroonlng dnln will, of courso, ba provldad wlioti It Is usod CIS ti lwl ( t i blnsltig snttiplltit) locallotie or In dolwmlnlng ll io oxlonl of EI nllo cloniiup,

Proposod Toxt Chongos: Notio,

Comniont 4: Figures 1-2, 1.3, and 1 4 ~m confuslirg, bocnusa suvurcd solv ol riunrbors usod lo ldonlily or doscrlbo ditforenl Incllitlos-such as bullding numbory, PRS nurriborq cind TA ~ i i i i r i b~ rs~ara nol axplninod In Itto llguro lugonds, For unch llguro, provldo II dollnlliort /ti llio logond lor lltu nurtiborlng ystorrts used, Also, prosonl a slrtglo ntnp lndicollng Iho bourtdarlov ol llro /iorl/i, conlral, arid soullr portions ol OU 1132 shown on lltoso Iiguras,

Discussion: The rclcroncod llguros hnvo boori rovisod lo botlot clnrlfy l l io Itilormnllon boltig prooonlod, It1 nddlllon, Flguro 1.1 has boon modltlod lo tnoro cloorly Illuslrolo l l io tiortliurn, eou!Iiorn, onslotti, and wustorn boiindarlos of OU 1132, Flguro 5-7 In Il ia RFI Work Plot1 lllualraloo l l io lwallotis 01 lho tiottli, canlrnl, nnd south portions ol OU 11 32,

Proposod Toxt Chongos: Roplaco Ilia orlglnal Flgurns 1.1 , 1-2, 1 4 , ntid 1 4 wllli Iho rovlood Figlrros 1-1, 1-2, 1-3, and I 4

SPECIFIC COMMENTS

Commont 5: (Executive summiry, pago i)@ According lo tho reporf, "twanty-sewn Polnntlal R Q ~ O ~ S O Sltos (PRS) have been Idanlitiad, Of lham, suvon woro recomrnandod for No Furtlior Acllan (NFA),' On pago 2 of the Executive Sunrmaty, olght PRSs nro llsfod for NFA, Thls dlscroponcy should bo clarlfiod,

Dlscusslon: Tho Exocullve Summary slalos Ihal llio w o n PASS woro rocorntnondcd tor ti0 tutilior actlon (NFA) In the RFI Work Plan submltlod lo €PA In 1993, A5 u rosull ot Ilia Invusllgallons doscrlbed In Iho RFI roport, an nddlllorial olghl F W a nre recornmondod tor NFA, Tliuro Is no discropnncy In llio loxt,

Proposod Toxt Chongos: Nono,

Commont 6: (Chaptor 1, Aggrogalo 2: Storago Arons, Socllon 1,2,2,1, pago 1-7), According to tho RF/ report, "an amount of so// sulflclont lor lho spociflod nurnbor of samplo conldnors wns colloctd in lllo bowl, mlxod, and npporiioned arrtong t!to conlairtors, " €PA guldunce documonts rocommund placlng nlkquols for tho analyses ol volallle organic compounds (VOC) dlrectly lnlo &implo jars, wllhoul mlxing, lo wo ld the loss of volntllo compononls to tho atmosplioro (€PA llr95), As a rosult, analytical data for VOCs m7y not bo ropresorrlallvo ot actual condilions, Explaln how this sumplo collaction method crccurntaly roprosonls tho actual lovol of VOCs in tho sol/,

Dlscusslon: Socllon 1,2,2,1 01 Iho RFI roport slalos lhal Aggrogato 2 sumploo woro atinlyzcd lor volnlllo organic compounds (VOCn), This slatomonl Is Incorroct; no Aggrogalo 2 mmplos woro, In lacl, nnalyzod lor VOCs, Tliaroforo, Iho mothcdology usod lor sarnplo collocllon wan approprlalo,

NOD Aosponea on RFI Rapo~i datod Aprll28,l DB5 T A d S (lormor OU 1132)

Aprll 0, 1090 Pago 2

Proposod t o x t Changoai (Ptl l )O 1*7), Fltially, ll io samploe wora tlonl lo nn aticilyllcnl Inbornloty, wlioro nnnlysos Includod gnnimn spoclroscopy, cyanldo, PCBn, lolal polrolouin Iiydrocntlwno (TPH), moinle, wloIIlw~~gntt~pounde-(.VOCo)t aornlvolnlllo organic cotmpoundo (SVOCo), ntid HE,

Comhiont 0 1 (Chirplor3, Orgnnics, Suclluti 3,2,2,3, pnuo 3&ci), EPA hag nlrundy rucorritrtarrdud / / in / Uhk CO//@Cl &fLI h f l b6lCk~lOU/td /UCtil/O/l9 t t l /!!I /6 lC/ / / /y /Of USU /fl dCJlfl C U l t t / M f / ! W j ! I fdt P,4)./!lh

Discussion: All of Iho PAH clalti ihdudod h i I tdB IqF1 topoll woro ru~uvalunlud L J d I l l ) Ill0 ttloltlQdOlu~y dascrlbod bolow, whlch lins boon ncooplod by EPA Raglan 0, O m or ttioto eotnplaa colloclocl a l onoli of tour PHSY [(394002(n), 4002(c), -00Z(cl), tiiid ~ O O Z ( O ) ) corilnlriocl tnoneurad cotrcotilrallonn al onn or t i w o PAHs In oxaom of lls SAL, In aaoli woo1 tho arimploa sliowltig olov~lod concotilrtillono of PAHe woro colluclod lrotn tocnllons olltior tioxl lo ntid dowtigrndlonl Irotti tin naptitill ptirl or In llio tlrulnngo puIli wllhln 5 11 of a root drciln, Thogo ooncllllof~s nru Illuslmlud In FIguruo 1*1 lliruugli (14 ut I l ia I:IFI rqmL Bocauso In ovary c n ~ o Ltio olavritod conconlratlonu of PAHa con lia ullrlbulocl to cin nntliropogonlo sourco, nono of lho PAHs wuro cntrld fownrd cia COCa,

Our ro~ovnluntion ol Iho PAH dalo raairlls In ti0 clitingo lo nny ol Ilio wtioluslons or roconiniondallutie prosontod In tho RFI roport,

NOD Rooponso on RFI Ropotl dcilod Aptll 28, 1005 TA.38 (tormor OU 1132)

Aptll 0 , 10UO Pngo 3

Proposod Toxt Changos: (Pogo 3 4 ) , Palycycllc aromailc Iiydtocatbono (PAH) roeullo uro cornparod vrll h ~ + e e l i t n a l e d - l r ~ ~ h ~ ~ t t r t d - c l ~ l g ~ f ~ l o y T d s ~ ~ 8 4 ; - 1 ~ . ~ ~ ~ i ~ ~ ~ ~ + o k m u w t ~~ I~ i~ luded-a I~Mi tdnd ivWuaI .PAI . l es l - i ~~ lo roe l~~1 i~ r in l y l l t x l kno~ I tode o ~ l ~ r ~ ~ n e b l o r t l - w i l I t - l I ~ i e o d - h o ~ n d - f o ) . l ho4n Is-woro-oollodod e l > c d ~ ~ l ~ l d d a l i f ~ k g f o t i n d . o o n o o n I f o l ~ ~ ~ ~ ~ ~ k e o i ~ ~ ~ ~ a i t ~ o e - u ~ - i r ~ t - l i o I ~ F e t t R d s o m p e f ~ ~ ~ p ~ ~ ~ ~ ~ A ~ ~ ~ M ~ scroonlng action lovols (SALS), bocnueo background ooncontratlons of PAHs nro nssumod ta bo nogllglblo oxcopt whon In proxlmlty to an anthropogontc sourco, For sarnplos In whlch PAH concontrations oxcoodod SALS, samplo locntlons wero ovnluntad to dotormlno whothor or not tho sourco of PAHs wna nnthropogonlc (o,g,, asphalt pads, roofing matorlnl, vohlclo omlsoions), PAHs monsurod In snmplos colloctod at or vory nonr such sourcos nro not carrlod l oward In tho scroonlng nssassmont, by vlrturo of tholr nnthropogonlc orlgin, In sarnplos whoro PAHs nro prosont abovo SALrr, and such concotitratlons cnnnot bo attrlbutod to an anlliropogonlc ~ourco , tho PAHe aro cnrrlod forward nB contaminants of concorn (COCs),

Commont 9: (Ctinptor3, RCRA Rlskd3asod Screonlng Action lovols, Soction 3,3, p q o 34), Tho roporf lndlcnles that screening action lovols (SAL) aro based on rogulnlory ievoIs~lncIudlng ninxirnunr contnrninnnt levels and proposod RCRA Subpnrt S (Corroctiva Action lor SWMUs) risk-bnsod /rtalhodology, 6ecauso U N L tins lndlcntcd l l i ~ l off*slto dlsposal of conlnriiinalod noll Is n polontinl rurnody, chnmckrlzallon 01 conlnrtii/tolod soil niny dopond on llrn toxlcIty clinruclorlsllc rulo nrialysls or othor snnlyticnl raquironiants !titit niay bo hiposed by the disposal fnclllty (OFR 1995)~ Ttroroforo, nlthough cortaln chornlcds niriy bo ollrnlnntod os conlanilnnnls ol concorn (COC) for r k k pwpolios, !/my rnay bo COC for dlsposni purposes,

Dlscusslon: Tho I~suos ol humnn lioollli risk rolniod lo conlamlnnnl lovole nnd wnslo dlopooal roqulromenls aro soparalo, LANL utiderslnnds tlinl waste mud bo dlspasod of / t i accordanco wllh nppllcnble ragulotions,

Proposod Toxt Chnngos: Nono,

Commant I O : (Cttaptor 4, PRS 3%002(ft), Socllon d, 1,1, pago d=l) , Accordln~l to tito ropoil, bricnuso Area 3, PRS~002(it), Is or1 a!rplpliaIt~covorud pnrklng lol, It was nol wmpiod, Wowovor, Irutlt3d 011 llio flgurus prosented In tito report, s u r f m rum! / /rum Aroa 3 probnbly drdnocl lnlo lho Yautitom d k h Expbln why Ihls drcllrrclyo pnlhwtiy way nat snrnpled,

Also, provide nddilional lnforriintlon coticonilng ttta phyftlcal ctiurctctorlstlccs of, and ttio wrrrilo trnndling pacllces at, Arons 1, 2, and 3, Informallon coneomlng physlcul clrnrnclarltlllcs alrould lncludo Irldorlc drnlnoge plrlhwirys, provlouv sfructuro~, nnd Ilto addltlon or rontuval of pnuod porklng or Ltlorago aruus, Waslo Inlormtlon slrouid lncluda wasto I ypo~, nrlos a/ wnslo goncrrnllon, Ilia ultlntalo lato of rvnste rtralorlnls, tind rofororicos lo, or rocords 01, llioso acllv/tlos, /I nu rocorddrt oro nvnllrrblo, LANL aliauld 80 Y !a It?.

Dlsousslon: Sacllon 8,2,1 ,I ,I 0 1 llio RFI Work Plcrn lndlcalos ltinl llioro Is rio vlelblo or docirtiiotilud ovldoiico ol spllle or lonks nnd llitrl 1111s ntuci wns usotl lor dollvoty and plckup of riicitarlnls lu bo used nl tho silo, Secllon 4,1 ,I 01 lho RFI roporl ofloro on oxplnnallon lor riol nartipllng ltrnt ofon or Il ia dtnlnogo palhwriy, Tho llold toam ovtiluatod llio PRS atid llio dtaltlnfJ0 tiruci orid oaticluclod llinl 110 tiioflrilnglul dnlii would be gnlnod by tlcmpling, 'l'ho noutosl downgradlanl locnllori (lint cotild ba aninplod wno 100 lo 200 II away, Tlinl nton also drnlns l l io wliola 0 1 l l io pntklng aruo, bulldltig roola, nnd ll io tnalot accou rood, whleh Is lroquonlly Itavolad, Any cliatiilccila llinl find boon aplllod woiild Iiuvn biion ~ i o l l dllulod nlid dlapotsod boloto rtmliItirJ lho sonipling pdnl arid, It oonlarnlnunle litid booti laiitid, I\ would riot nocossirlly tuiue baon psslblo lo cilltibulo tliorii to Atan 31 Conooqironlly, l l io flold lotiin cotiolirdd llinl sampling was tiol tlpproprla~o,

Apt11 0, 1DQO Pnge I

With respocl lo Iho socond part 01 Iho NOD coitimoiil, all 01 lho ltilorrnallati avallablo on pliyslcal oliaroclorlsllcs 01 tho sllo, waslo hnntlllng prnnllcos, wnslo lypoe, rnlos of gonornllon, nnd Inln ol runelo malorlals for lhls PAS was prosunlod In Sudlons 2,3 nnd ti,2,1 ,I ,I 01 Ilia I?FI Work Plan,

Proposod Toxt Chnngos: Noiio,

Commont 11 I (Chaplor 4, PRS 3%t)O2(n), Sactlon 4 f I 1,1 , p q o +2), Accardlng la llio ruporl, tho slowti drain onst of Aros 1 , PRS.39&22(a), rvns nul somplod, Flguros prersontod in !/in rapoti Indlcnla tltnt drdnayo lrortr Aron 1 ttilglil h u e lrnrispariod cairl~rrtlnnrits Irito l l h storrrr drdit, Tho mpotl dtould uxpldti rvlry this storm dmin WLJS nol sarnplud, Tho raport sliould iilso uxplrilri w/im tho slarrii drtilrr wit9 inshilled, the oxtont ol //to civsacloted slorrrr systortr, ririd rvlioro rurioll Ironi l l i h !kv/ti dtriln dluchafgua,

Olscusslon! The slofm drnlii wtis iiol lncludnd lii IIio fiuld Itivosllunlloii bocautlo Ilia poloiillul lor tunall froni PRS 396002(n) lo onlor II Is notjliglblo, S~JUC~IICKI~~~, Ilioro IQ rt coricrolo wtilkwny Iliril la uluvtilod sovoral lnchos from tho stirroundlriy noll atitlnco niid acla CIS ri dniti lo ruiioll wolor, Oboownlloiia tliii'liiu lnlonso ralnlnll tndlcrilo thnl ruriolf lrovols ttioliily lo Ilia notlti oiid liilllltalos Ilia u i i~~t ivod oron, A 4. lo 0. In, slartn would probably bo iiocossaty lor runoll lo brooch ll io dtltii rind oiilor ltio slotiii drniii, Allliougli lrilonso Ihundorslorma cull muso llrtsli ltoodliig In tho oron, Ihoso aloritiu rnroly doposll riioro llinn I lo 2 In, of prnclpllnllon,

Proposod t a x t Chnngos: Nono,

Commont 12 : (Chaptor 4, PRS 39402(rr), Soction 41 , i , i , pnvo h?), Two Y U ~ ~ O C Q soils rtntrrplov (AAA3B02 and AAA3603) woru collectod /rotti ID H394 105 1 , and tliroo (AAA3C05, AAA3GUB, niid AAA3606) woro collactod lrom ID l/39*1053, Explaln whothor thoso woro grab sntriplus or corrtpoalto samnplas, Also oxplaln rvhy niultlplo santplos woro colloclod at o m locallori,

D l r c ~ ~ s l o n : First, lo clorlfy, snmploo AAA3005, AAA3000, and AAA3OO7 (rolliar Il ioi i n socond AAA3605,m s t a t 4 In Comrnonl 12) woro colloclod lrom ID 113L)-1053, All of l l io snmplas (llioludlng AAA3002 and AAA3603) woro grub somplos, Cohcalod snmplos woro colloclod lrom oiicli 01 Ihoso locations for quality asouranco purlmoos (to liidlcalo lhc dogroo 01 nnnlyllcul vclrlnblllly),

Propovod Toxt Chongos: Nono,

Cornmont 13: .(Chaptor 4, PRS 3~-002(n), Figurn 4-1, pago &3), Doslgnalc Aretis 1, 2, arid 3 on Flguru 4 1 ,

Discussion: 'rho only aroa doslgnalod on Flguro 4.1 Is A r m 1 , Aron 2 is ollualod liioldo of Bullding TA- 39-2 and Aron 3 1s on Iho southorn ond 01 llilu bulldlng, whlcli 1s no1 roproeonlod In 1110 Ilguro, Consoquonlly, nollhor Aron 2 nor Aron 3 nppoara on Flguro 4-1, Iiowovor, wo liuvo rnodlflod lho llguro lo IllusIralo more clearly I l ia locnllon 01 Aron 1,

Proposod Toxt Chnngos: Roploco Ilia original Flguro 4.1 wltli ltio rovlsod Flguro 4.1,

Commont 14: (Chapter 4, PRS 39*002(b), Soctlon 4,1,2, pago 4-10), The roport doos no1 lncludo sulliclenl background lnlormation to support tho limited biased sampling slmtogy usod lo characterla the pofentlul conlamination al this PRS, Allhoiigh curront pliyslcal chaructorlstks genorcllly support the soleclion of those blased sampllng locations, tho oxlstlng condlllons may not bo roprosonlaliva of li/slorlcal condlllons, Therutore, blasod sampllng locallons lhls PRS mu), not charact erlzo Ihe complete nolure and extont a1 contamhotion,

NOD Roeponso on RFI Roporl dalod Aprll 28,1085 TAd9 (former OU 11 32)

Aprll 0, lQ00 Pago 6

Provide nddllional lnlotmllon concumlng llie physlml chnlaclorlelIcs ol, and lho wnsla handllng prncllcoo at, PRS 39*002(b), Informallon concornlng physlcnl charuclorlstlcs should ltrcluda hlslorlcal dralnnos pttlhways, previous slructures, and tho addltlon or rotnovnl of pnucd pcrrklng ur slomge nreas, W M ~ O lnformatlon should Includo rvuslo lypas, rnles ol wirsto gonaratlan, lho ulllmala lnlo of wnslo malorIuls, and reloroncos la, or records of, those ocllvlllos, /I no rocords uro nvallablo, l A N l should uo slnle,

Dleousslon: Tho Phnso 1 (lloll lnvoullgnlory) antnpllng alralogy uriiployud wne ptoaonlod In 90cllons 4 2 ' 2 nnd f,2,4,1,2 ot Iha OU 1132 RFI Work Plan, wtiloli wali apptovod by EPA, Tho putposo 01 Ilia Phnso 1 ltivostlgtrtlon wns not lo chntnolatlzo llio oxlotit 01 cotilamltinlloti, but rnlliot lo doloriiiltia Ilia prosonco or nbsonca ot conlotnlnallon,

Wllh rospocl to tho socotid pnri of llio NOD cornrnoril, till of tho ltilortnnlloii nvnlltiblo ori pliyolcnl clinractat!stlcs ot \ti0 tito, wnsto liaiidlltig pttiallcos, watlto lypoo, tnlos 01 gotioralloti, ~ I K I tnlo 01 wtislu mntorlnls for Ihls PRS wns prosanlod In Socllot~o 2,3 and 5,2,1 , I ,2 01 tliu AFI Work Plnn, I

Propovod t o x t Ctinngos: Notiu,

Commont 151 (Chnptor 4, PRS IE1d02(b), Soctlort 4 1,2, pago d&10), Accorctiirg tu //IO rapafl, polychlorlnolad blpltonylv (PCW) w r u used 111 oxplosivoa laslv a/ id wuru rocovorod Irarrr ulucltlc tmnsformors, Providu hlsloriad ~ r d iiilurrrtrtlion corrcaml/rg tlra Iintrclllrr~ oird disposnl ol PClh at llrh PRS, Also, spocify rulrothor PCBs tiru currorrtly boltrg usad,

O l s a u s d o ~ ~ t Hls\(orlctilly, nll ot llio llrlng pooinls liod slopdown Iratietortiiuts lliut conlnlnod P C b conltilnlny 011, t h o s o lrnnsfortiiars woto llualiod oovotul yanta ngo by a llcotisod PCU dlslmwil flriii, titid Iho PCEbcontnlnlng oll wns toplncod icrllli clunn 011, PGDR wota nol uoad It1 ox~~loo/vos Iusto, pat bo; I W b contnlnlng cupacltors and ltnrisformoto cuttipaeud p ~ i d ot Iho aloolrlcol myslatne usacl In oxploelvoe l o d e , bul Iha cnpncllots wora locrilod In a bulldlng and lxJlli Ilia capoctlota ntid Itatistattiiors \voro slrloldd Iron1 tho clolonnllons, Sovatnl yonts rigo, 1111 PCU.cotilrifrilng acipncltots nl T A 4 0 woro ehlppod lo ti Ilcatiaod PCB Inalnorallon Iitrti for dlspooril Jh nccotdrinuo wllli T o ~ l a Subslaticus Cotilrol A d (I'SCA) ragulnllotis,

Ptoposod t o x t Chnngos! Norlo,

NO PC~~COnlflihlIVJ oquipmonl IS tiLlttol\tll/ bdiig U d 111 tthy attpt~clly trl 't'A*W,

Commont le ! (Chnplor '1, PflS 39d02(&), Soctloir d , 1,2,Ci, prge bid), Accatdiirg lo llre report, LAN/., racoirtrrrorrds NCA lor /lrls PHS arrd dolois chartup u/tlll llro nanrlly l/ri/rg silo h s bean dacoirrnrlsnlurred, PCB conlnrnindion wns dlscouurod durlrrg Ilia Wl nl tlra sha; bneod oir Iho Infotrtmllon pravidad In tho

ruporl, !lib conlnrrtirrntkn mny linua ioeultod lroirr lrtrrrsloririor oil 9pillsl Accardlrig lo llro Tu,vlc Subvlnricos Conlrol Acl (TSCA) (OFF/ ig9!ij1 clannup ol PCB beort rvillr ai lioirrs ol !/io d / ~ c o v e y ol //re spill. Explttin tho dohy In claniring up //io PCB9 lounrlol INS PnS,

OlscUssloht LANL ltdoritml EPA of llio oxlslarico at PCUs nl lti ls DIIU vln Il ia 19aU niid IOU0 3WMU toporls, llio OU 1132 RFI Work Plrin, tirid Ilia TA40 AFI l ~opor l , IANL utidanlnnds Ilia1 (La CFR 7U1,120 gonorally roqulras ttrnt aotlnln PC!3conltiltiIrig 011s apllls ba docotilnttilnnlotl or totriodlnld lo roqUirottiohts oslabllshod by EPAl LANL ballovaa lhaI11 la tiol toqtlltotl lo rapotl llils splll undut 10 CFl3 761,126 bocouso, oflor uvrrliinllng ltio ~ n n l o ptollla totrna gonarntod CIB o rosull 01 IIiu VCA, I1 1s aloar llinl the spill hVolVod lass lhnn 10 pouiids 01 IW3aI T/iotoforo, I1 Is hol nddfaucrud litidor 40 CFR 701.125(n)(1)(1) or (11).

Propovod t o x t Chnngosi Nona,

Gomotant 171 (Chap/ar4l, PRS ~ s ~ o a 2 ( c ) , Socllon d l 1131 paga d*iG), Tho toporl does not lncluda sulllcienl background lnlorrnnllorr 10 support llro /linltad 'blasod' szrniplirrg slralugy usod la clrnmclorln

the polanllcll contanrlriullon a1 lhls PRS, Alltiough cirrronl physlcal characturlsllcs genomlly support tho solecllon of lhese hlased sampllng locilllons, tho oxls l ln~ condlllons my not bo reprovenlatlva 01 hlslorlcnl condlflons, Therefore, blasod sarnpllng locallons lhls PRS may no1 cl~araclorlru tho comploto nnture and extent ol conlarnlnntlon,

Provide addlllonal lnforrnatian concornlng tho physlcol chnmctorlstics of, and rho r w t u tiandllng praclicos all PUS 39402(c), lntormallon concemlng physlcal characlorlslics sliould lncludo hlstorlcal dralnage pathways, provlous structures, and tho nddlllon or rumgvnl of pavod parking or slomgo nrons, Wasto Inlormallon should lncluds wasle lypes, raloy of wnslo gonorallon, !/io ultlnlalo lnle ol wnsla malorlnls, nnd roferencos lo, or rocords of, tliaso acllvlllos, If no racards om avallnblo, U N L sliould so slnle,

Discussion: Tho Phasa 1 (Lo,, lnvosllgalory) aompllng stratugy omployod was prosonlod In Socllons 4,2,2 and 5,2A,I ,2 of tho OU 1132 RFI Work Plnn, whlch was npprovod by EPA, Tlro purposo ot Iho Phaso 1 invastlgnlion was no1 lo charnctorizo lho oxloiil 01 conluminnlinn, bul ralhor to dolormlno llio prosanco or absonco 01 conlnmlnnllon,

Will1 rospoct lo Iho socond pad 01 l l io NOD commonl, all 01 l l io lnfor~nnllori avoltablo 011 physical charnclorlsllcs 01 \he silo, wasto linndllng praclicoo, wtlsla lypns, rntos ot gonotiillon, and fato 01 wasto molorlnls for this PRS was prosonlod In Socllons 2,3 and 6,2,1,1,3 ot tho RFI Work Plon,

Ptoposod t o x t Chnngos; Nono.

Commont 18: (Chapter (1, PRS 38402(c), Secllon 4,1,3,5, pngo 4-20), Basad on lhe olouutud concentrnllons of uranium, lead, and PCBs llto reprl rocornmands a voluntary corroctlvo action (VCA) for this PRS, The report lndlcatos lhal concenlmtlons 01 urnnlum ara 38 llmus groator than tholr SAf, and that lend concontratlons nro about 400 limes groator than lholr SAL, AI PRS 39*002(a), conlamlnatlon of slnillnr magnitude was recommend for uxpodlled corroctlvo acllon (ECA), Consoquonlly, tho roport should explnln lhe recomrnendatlon ot u VCA, Insload 01 an ECA, a! !/tis PRS,

Dlscusnlon: PRS 39=002(c) Is not on 1110 LANL HSWA pormil, AI tho lima 1111s rocommotidallan was made, LANL's progrnmmalic oppronch was lo proposo VCA for non-HSWA PRSa tind EC lor HSWA Pnss,

Tho slolomenl In Commenl 10 thal lond coriconlrollonv aro nboul400 llmos grofllor than its SAL 1s incorrect, t h e RFI report corroclly slolos tho1 tho hlgliost monsurod load conconlrallon EII this PRS was 3H9 ppm, which Is bolow tho SAL for lead 01 400 ppm,

Propovod Toxt Chnngos: Nono,

Comment 19: (Chapter 4, PUS 3%002(d), Section 4, 1,4, pogo 4-20), Tho rcporl duos nol lncludo sufflclenl background Inlormallon lo support llie llrnllod "bhsod" snrnpllng slraalogy used lo clioraclorlro tho polenllal contamlnaHIon al lhh PRS, Allhougli cunonl ptiyslcal characlorlstlcs geiiemlly tiuppod tho sslecllon ot these binsod sampllng localloris, tho axlsllng condllloris nlily not bo rupresanlativo of hlslorlcol condlllons, Therelore, blosad sampllng locnllons lhls PRS mny no1 clrnraclorlza 1/10 coriiplolo nature and extort1 of conlnmlnatlon,

Provlde additional Informallon concernlng /ti0 physlcnl chnmcturlsllcs 01, and tho rvasto ltandllng prnclicos til, PUS 39402(d,L Informallon concornlng pliysleal chnriictorlsllcs should lncludo (1) tilslorlcal dralnago pathways, (2) prevlous strucluros, (3) wtiolhor llio oloctrlc closal wny uvod lo houso PCB-conlalnlng lnnsfnrmers, (4) vihother lhe oloclrlc closol Is connocled lo n dralnago syslorn, and (5) the addlllon or rumoval of pvedparklng or slotaye aroas, W a s t ~ lnlorninllori sliould lnclude wnslu typer, rdas of waslo

NOD Rosponea on RFI R~por t dalod April 28,1995 tA130 (tormar Ou 1132)

Aptllb, 1080 Pnga 7

goneratlon, /ha ultimtrla / o h ol wnste ttl~ilorlols, nnd rotbroncos to, or racords ot, thoso nctlvltletr, It nu records or0 avallnblo, LAN1 struulcl SO slnle,

Dlscllsa/onf t l io Phnsn 1 ( I J J , , Irrvosllgnlor)) snrriplitig blfalc~y oltiplayad wfln ptaearilad t t i Elncltatia 42,2 and 6121d,l l2 of l l io OU 1132 IqFI Wotk IJltin, wlilali wcis apptovod by EPA, Tho putpoou o! llio Phase 1 In~/esIlgnIloti wns no1 lo olinrtlulorlro tho oxlati1 ot ctltilnmltriillo~i, bul tntliat l o dolottnlila Ilin prosonce or nbeonce of conlnrtiltinllati,

WIIh raspecl lo Ihu soaolid pnrt ol Itio NOD cort i i t io~i l , dl 01 lliu Inlotmnllorr iivallnb~a 011 (~tiyiilcril choraclarlsllcs of Iho sllo, wnslo Iintidliiig ptnullcos, wnslo Iypotl, rnlos of gonaralloti, ntitl lrilo 01 wnalo mnlorlals lor this PRS wns prosniilad 111 Socllons 2,3 and G,2,1 ,I , d l ol llro IVI Work Plnti,

Proposod Toxt Chnngost Nona,

Dlsousalont Thoro 19 no ouhip ul llilo loccilloti, Tlio lauluto wu snmplad and dascrll~ud 09 n "nLltn(s" wna on oloclrlonl acaoss box bull1 lnto 010 groctnd wllli nii opun gtnlhg ovur llio lop, Tliora 19 no dtnlti Iltia lunvlng Iho box: howovur, Ihoro Is n 4. lo a h plpo (alxrul a In, a h v o ll io k l l o t i i 01 l l io box), wlilch In an oleclrlcal condull and slgnnl cnblo roc0 WFIY l l io l coiitiacln lo nnolliot ultnllnr box nlsul 100 11 oriol, Tliuro Is no drtrlri lrom [ha second box,

Proposod Toxt Chongonf (Pago 4.20) Tlile aton 19 o grnvol pad 011 Ilic oulolda soutliwusl cornat ol Bulldlng Tk49457, Iho blooktiouso for IW3 39~004(d), II Is unpnvocl arid lticludofi an olocldoal oloeol -a twnwrdln&tihip monsurlng approxltnnloly G ll x 5 II x 4 !I doap cttid covorotl wllli a elool grnllirgl Tho olocttloot closot sump may ncl os tin accitrriiilalloti polril !or clobtlti ltotn oxplaalvae ~ O H ~ D coiiductod nl Ihe llring ~ 1 1 0 , 15 Io 20 ll own;',

Also, provlde uddItlonal lnformallun cancornlng l l io pltyslcal chracterlsl/c,s 01, nnd tho rvasle Iinndllng practicas at, PRS 394l02(0), lnlurtnnliun concornlng physicnl chnraclurlsllcs should lncludo lrlslurlcel drainage pnthrvays, provlous slructuras, ond tlio nddl~lon or romoval ol pnvod purklng or storago aruas, Waste lnlurmntion should lncludo wnslu types, rates ol waslo ganorntion, llra ullIrrtri/o lala of rvasto malerink, and rderoncos to, or rocords of, Iliaso actlvlllas, If no racords N ~ O nvdlablo, LA N1 sltould so state,

D~scuasioh: Sumpltng wa5 conduclod in accordatico wllh Socllons 42,2 and G,2,4,1,2 01 Itla Ou 1132 RFI Work Plan, wlilch was upprovod by EPA,

With respocl la Iho socond pnrt of tho NOD conitnont, all of I l io lnlurrnnllon nvallablo on pliyolcul characlorlstlcs 01 Ihe sllo, woslo handllng pracllcos, waslo lypaa, rulos 01 gonorallon, and lolo of wnslo rntilorlals for lhls PRS was prosonlod In SOCIIO~B 2,3 nnd 5,2,1,1,5 01 Ilio RFI Work Plnn,

Proposod Text Changos: Nono,

NOD Responee on RFI Roport dolod ApIll28,1085 TA-39 (lorrnor OU 1132)

Aprll 0, 1000 Pngo 0

Commont 22: (Chapter 4, PRS 39*002(1), Sectlon 4, f,S, page 4-28), /I l t ispnvdarna betwoon tho stomgo uron nnd the mnln slroanr chnnnol wns not al on0 limo covorod wllh asphalt, cottlamlnants m y have accumulated In the ttroa that 1s now covered wllh asphalt, Provlda addlllonnl~ustlflcatlon for rho seloction 01 sampling locations,

Aluo, provide ndditional Informnlion concerning tho physical ctiarmtorlsllcs of, ond tho wnsle ltondllng practices at, PRS 39*002(f), lnforrnalion concernlng physlcal characlerlslics should lnclude hlstorlcnl dralnngo palhwnys, provlouy structures, and tho addillon oro romoval olpavod parklng or storage areas, Waslo information sltould includo waslo typos, rnlos of wrislo genornllon, 1 /10 ullirnnlu fato ol wasto nialeritils, m d roforances to, or rocords o/, thoso nctlvillus, If no racords nro avdlubla, LANL sliould so shle,

Dlscusslon: Snrnpllng wns conductad In nccordnnco wllh Socllone 4,2,2 rind 5 2 A I ,2 ol llro OU 1 132 NFl Work Plan, wlilch was opprovod by EPA,

Tho osphall pad wns lnslnllud a l lho limn Building fA.394U wns bull1 atid boloro any nctivllloe warn conductad nl 1110 ~ 1 1 0 , All of lho lnforninllon tivnllnbto on pliyolcnl clinmctorlsllcs 01 llie sllu, waelo liondlltig pracllcas, woste lypos, ratas of gonornllon, and toto of wciala tnrrlorlnla for ttils PHS ~ n s prosontod In Soctloris 2 3 ond 5,2,1,1 ,G 01 tho RFI Work Plan,

Propomd t o x t Changoa: Nano,

Commont 231 (Ctrnplor 4, PRS 39~002(l), Soellon d, l , U l d l prigo 432), Ttra roparl slnlos tlrnl 'coppar MY ftio on/y COC; I / was defocfcd nl a nruvlmurn conconlmllon 01 3200 nrllligrctnrs por kllograitr (ttiglkg), 200 mNkg sbove Its SAL, A d///eronco 01 this niannltudo lu nol coddorod lo corislllulo n pl t ln l ln l 1111s trtngrrlludo ls not considorod lo cons~lula n polontlnl tiurtrnn honlth rlsk," Any coriconlrnliort ovur llto SAL should bo consldored n poloiillnl rlsk, bocause tho SAL lu a brankpnlr/l, EPA rucommends l t td coppor bo ovnlualod 09 n polonflal hsnllh rluk,

D~acUsaiot~! LANL ucknowlodgos lhnl wtiati niourtutod concat~lrallona of n cliuiiilcnl o x c o d Ila SAL, a pdonllnlly unacceplnblo risk lo human Iionlllr rnlglil oxlrrl, To dolfjtmltlu wliolhor or lid sucli a tlsk oxlsls nt PRS 39002(!), ii proilmlmty rlsk aseoesrnuiil Was (mfotmnd for coppor, using a lotig4ortn hdU!Jltkd workor oxposuro sconnrlu and Ilia niollidology dascrlbod In EPA% b k Aosnsotnoni GuIdanoo for Suporfund (1 gag), Undor [ha long4otm workar oxpsuro scoIiotIo, Iho tostills donionaltalu (lid Il ia Hazord Qitotlont Is 10s.s lhnn ono, wtilcti Indtcnloa ltinl ha unaccoplublo rlek lo llutnnn lionllh wlll rosull lfom oximsuro lo lho mxlrrtum conconlrrrllon of coppar doloctad nl 1111s IWI,

Proposad Toxt Changost Nono,

NOD Aosponse on RFI Ropott dnlud Aprll2o,Ia95 TA.39 (lorrnar OU 1 t32)

Dlscuealoni All nvnllablo Inlormallon on tho hlslotioal mantigomonl of PCBa atid hazardoua waatoa nnd on the ptiyslcal chnraclorlsllcs of ltio sllo Is proaonlod 111 llio OU 1132 IW Work Plan, No PCD waeloo or harnrdous wnslos nro aurrontly bolng Imdlod or elated at lhls IyI;lSl In fact, a VCA wno potformod al Ilils PRS durlng Iho suml'nor 01 1995, and all PCt3aonlnmlnntod waaloe woro pnckagod and aro being dlsposad in accordance wllh TSCA rogulatlons,

Proposod Taxt Changasi Nono,

Cotnmont 25: (Chtiptor 4, PRS 39407(n), Figuro tb71 pago 4-34), Tho t'lguro doos net clenrly slrorv whelher'soll samplos wore collvctod froin l l io slnltiod soll, LANL sliould rtiodl/y the Ilgura to rthaw lho arm of stainvd soll, LAN1 slrould also justify Its soloctlon of sanipllng locotlonu, becnusu r;odlnionlleoll sornplcts wvro not colloclod from drnlnogo pathways as lhoy ware at PRS 3R-002(0) nnd 30*002(1),

Dlsausslon: A tovised Flguro 4-7 1s nllncliud, Sampllng was conduclod as closo lo tho poloiillal suurco €19 posslblo and wllhln ltio nroli 01 Iho sltilnud 0011 (eoo rospon~o lo Common1 7 lor dolnllocl rallonalo),

Proposod Toxt Chnngosi Ropluco orlglnnl Flguro 1.7 wllh rovlood Flguro 11.7,

Cofnmant 26: (Chapter 4, PRS 39407(a), Soctlon 4,1,7,5, page 1-36), Accordfng to tliv rvport, U N L roconimends VCA, instcad of €CAI for thls PRS, High conconlrallons 01 PCBo war0 dlscovarad at this sito; based on tho lnformtlon presonted In tho ropoti, this canlnminatlon may hnvo rosulted lrom trunslormer oil spllls, Accordlng to TSCA (OFR 1995) clonnup of PCB splilo must bogin witlrln 24 l iourt~ of tho discovery 01 tho splll, LAN1 should axplnln tho delay In clonnlng up tho PCB9 lound ut tlrh site,

Dlscusslon: LANL Informed EPA of tho oxlslonco 01 PCOE at this allo vlu tho 1080 und '1990 SWMU reports, Ihe OU 1132 RFI Work Plan, and tho TAG9 RFI Report, LANL understands thul 40 CFR 761 ,I 20 genorally roqulros lhal cortnln PCB-conlnlnlng o/k r;pllls bo doconlomlnulod or rornodlnlod lo roqulromonls eslabllshed by EPA, Tlils PRS wns romdlalad vla VCA during tho nummor 01 1095, and Iho prollmlnoty remodlalion goal (PRG) thal LAN1 was roqulrod by EPA Roglon 0 lo use la drlvo llio PCB cloanup was 0,743 ppm, Tho 95% uppor confldonco limit (UCL) on Ilio rosldual PCB contnrnlnulloti al this PRS is 0,258 ppni, wlilch domonslrnlos lliat Iho cloanup oxcoodod EPA's roqulromonls,

Proposod Toxt Chongos: Nono,

Commont 21: (Chaplor 4, PFlS 39-007(d), Sncllon 4,1,8, paga 4-37), Justliy tho solocllon of aiinlyses for tho sol1 samplos collectod at lttls storago nron, VOC aniilysls wns not conducted for samplos colloctod a1 this PUS, although tho ropt i lndlcntos thal ( 1 ) ncotono, all, and kerosorto / w o boon slorod at thls area, and (2) releases of tliose solvonls havo stained tho soll noxt to tho oasl sido ol tho slorago area, EPA recommends tlint the slalnod soll bo nnnlyzod for VOCs,

Dlscusslon: Our rospanso to Commont 7 prosorits tho rallonalo for not podormlng VOC analysoo on tho samplos collecled al lhls PRS, Tho roport lncorroclly r;latos thnl acolona wae storod at l hb aroa; accordtng to Iho bosl availnble Informatlon, ~ i l o oporalors novor slorad oolvonls Ihoro, Durlng llio tlmo 01 the flold invosligntlon, Ihoro wos a drum onslte, which hnd provlously conlalnad ocolono bul was emply when It was broughl to PRS 39*007(d), Tho matorials storod hlstorlcally o l Ilils PRS lncludod niltioral 011, spindle oil, korosono, and silicon 011,

Proposod Toxt Changos: On tho nortlioast sldo 01 tho pad aro slorod drums al tiolwnle-faoolort~oll and koroseno), with tho disponslng vnlvas dlroctod outward and VOW naar tho borm's oulor odgo,

NOD Roeponsc on RFl Roport dnlad Aprll 28, 1905 T A 4 Q (lormer OU 1 132)

Aprll 0, lOD0 Pogo 10

Commont 28: (Chaplor 4, PRS nsaoo7(d), F/guro MI pago +38), Tlia Ilguro ~ O O S nul cloarly show \vho/her sol/ snnrples woro collocled !ram [/ io slnlned tlall, Modlly llro !iguro lo c t l t o ~ llio nron ol slnlnod sol/,

Dlsa~selon: So mocllllod,

Proposod t o x t Chongosi Aoplnco orlglnal Flgitro 4 4 wllli rovlsod Flgura 4 4

Propasod t o x t Chongosl Norta,

Proposod Toxt Chnngos: Nono,

NOD Rosponse on RFI Roport dotod Aprll ZU, 1 OD5 TA-39 (tortnor OU 1132)

Aptll 0, ID00 Pngo 11

Commont 32: (Chapter 4, PRS 39=006(0), Secllon 4,2, Il4, 1 , page 4055)~ Accordlng to tho report, samplos AAAG289 and AM6290 were collected from boring ID #39-1088, Howevor, Figure 4.1 I Indlcates that samplos AAA6201 through AAA8294 wern collocted from thls borlng: Flgura 4-10 lndiates that samples AAA6289 and MA6290 were collecld /rum borlng ID #39*1O8fl Explalrr lliosa dlscrepancles,

Discussion: Thure is an orror in tho dasignnlion ol thaso satnplas in tho loxt, The lnlormatlon in Figuro 4.1 1 Is corracl,

Proposod Toxt Changos: In addillon, at locallon IDtI 304088 a coroholo waa drlllad and tho cor0 wan sampled at deplhs of 9 It (AAA6293 AAA6288) and 11 It (AAA6294 AAA6280),

Conimont 33: (Chapter 4, PHS 394IOt?(a), Saction 4,2,1,5,1, pngo 4-60), According to 1/10 roport, LAN1 collected no samples lrom the contonts ol tho septic tank, Potontially hazardous contaniinernls niay havo

nccumulnled In this area, EPA recommands lhat addltlonal subsurfaca so11 samplos bo collodod to adoquateiy charactarlzo tho activo soptlc tnnk,

Dlsausslon: Sampllng at thls PRS WEIS conduetod in accordalico wllh Soctlon 5,4,4,1,3,1 ol llio OU 1132 RFI Work Plan, whlcli was opprovod by EPA, Thls aocllon of llio work plan prosunls tlio rflllonalo for not collactlng samplas from wllhln tho ncllvo soptlc lank, Nonellioloss, LAN1 acknowlodgos that Comment 33 has morlt und, thoroforo, agroos to eamplo the ooptlc tnnk In FY 00 to nccortnln whothor or not It contoins hazardous contomlnnnls,

Proposod Toxt Changas: None,

Commont 341 (Chaplar 4, PRS 3g4lU6(a), Sacllon 42,1,5,5, page 4432), Tho no lurlhor actlori rocommendatlon lor thts PRS l.s b a d on pnrlid Clnla, bocauso additlnnal saniplev aro n o ~ d o d lo adequatoly charrrcteilre tho actlva saptlc tank, After snmplos hnvo been colloctod, the recommondatlons in this saction should bu rnodiliad to rollact //IO results of lho addltlonnl sartipllng dala,

Dlsausslon: IANL concurs, Aftor stlmpllng haa boon adcompllohod and Iho rosulla uvalualod, LANL wlll lmnsmll lo EPA vla lotlor ~l summury 01 Ilia dola for this PRS and a roconimaiitlailori lor NFA or voluntaty corrocllva nation (VCA), as approprlalo,

Proposod Toxt Changos! Bocauso no humn hoalth COCn b#ora ldonllllod for 41th tho nron'around tho sepllo tank, LANL Is prollmlnorlly rocommondlng NFA for thls unit tl~o-aolluoso~~lt~iank, A final roaommohdatlon wlll bo mnclo nftor tho aontontsl of tho tnnk ara mmplotl nnd tho rosults nro ovnluatod,

Commont 35: (Chaptor 4, PRS 304Xl9, Suction 4,2,3,1, pogo $*GO), Accordlng lo tho RFI report, "because /he proclso loca/ion ol t h lormerpll Is nol known, samplos woro colloctod l r m tho lclcntlon thought mast likuly to hnve boon tho slto ol Ilia pit,' No HE or HE niolnbolltov wdro rtraoaurod In tho samplos collected, Jusllfy the solodud sntnpllng locntlans, Also, dxplnln why n ptoplij~slcul B U ~ V O ~ wart not used lo dotermlno /he loal lon d //to plt baloro sarrtpllny, Dlsaussloni Firal, tho stntomonl Ihal "ti0 WE or HE malabolllnn wuru niomurod, , , I ' le Incorruai, Anulysaa lor HE wora putformad on all sarnplos colloold al llils PAS, ntid no WE wns d o l a a l d Iri ally of Iham,

A geophysical survey wus conduclud io dolormlhe lho locallon ol tho (ill ptlor lo eatnpllng; llro iasulla 01 h e SUNOY aro Included In tho RFI ropoti as Appontllx A, Tho oloclromngnollo lnt)uc1\oti (EM) atid

NOD Roeponso on AFI Ropott dalod Apiil 211, 1 UB5 TA139 (lormor OU 1 t32)

magnolotnel~r/~rndlomeler (MAG) suwoye conduclod al PRS 39405 Intllcolod no a nomalous condlllonu or burlod largols, Tho results upp port Iho anocdolal repoti lhul lho soopnga 1111 Iiud boon ramovod, Tlio field leam ovnlualod Ihe utoa whero Ihe pll was supposed to hava boon localod, Tho trhotl dlelanca belwoon the bullding and Iho lull cllll llmllod the poslllon of Iho pll lo llial shown In Flgura 4 4 2 01 llio IW Work Plan, Tho llold loam doaldod lhnl Iha botil loaallon for sarnpllng wne mldwoy botwoon Ilia norlhernmost and eoulhornmosl passlbla pll hundotlos and ml a looallan allglilly downgrodlonl lrom Oial oroa, t h o tallonale was lhal these lowllons would tiavo lnlorcoplod Il ia plt l~caOonr or any WE Ihol mlglll havo nitgratod from tho pll, ragardloso of Iho pll's loonllon,

Proposctd Toxt Chnngos! Nono,

NOD Roeponso on RFI Roport dalod Aprll28,1005 TA.30 (formar OU 11 32)

April 0, 1906 Pago 13

S A N T A F E N A T I O N A L F O R E S T

Flgure 1-1, tocntlon of Loa Alamoc Nntlonnl Laborntory ntid TA4O (Oporablo Unit 1132)1

NOD Rusponoo on RFI Roport clnlod Aprl l28, IUBtl tA.30 (formar OU 1132) Aprll 0, 1800

Pngo 14

I

Flgura 1:2, Loaetlons of bulldlnga arid PAS8 In tho ttoutharn portlon of OU 1132, NOD Hoapotiaa on RFI Roport clolad AptIl211, I090 TA.30 (tormor OU 1132)

Figura 1.3, tocatlons of bulldlngs and PRSs In the central portion of OU 1132,

NOD Roeponeo dn RFI Ropart dntod Aprll20,1C85 TA.30 (formar OU 1132)

Aprll0,'1000 Page 10

~ l g u t o 14, Locations of building8 ohd PR8a in the nartharn portton of OU 113% NOD Roeponoo on RFI Ropuil dnlod April 2011Bt)!l tA.30 (lormor OU 1132)

W J k U

- - - - - Unpnvod rofld .----..-..-- PRS boundary -bi-ii- Ofolnngo dlroollon

@ sampling locallon

Sampling locallon @ and aiou ot olnlnod aoll

33*1065 ~ocu~ion ID (AAh3NO)' Somplo numbor

0 10 20 !I I - u - L L L d ~Anftqiaphy 4 A, Klm Zn90

Mapled Iiaii FIhW 1693 I

I1 1,110,150

N Ii?dO,Xr,

Flguro 4.7. PRS 39=007(o)-cloraga area at TA=39=63, sumpling locatlone 39=i0f3Eil 394066 and 394 067,

NOD Roaponeo on RFI Aoport datod Aprll 20,1088 tA.39 (formar OU 1132) Aprll9,lOOo

Pogo 10

\1 W w

NOLI ROOpOhBe on RFI flop014 dalotl A p r l l 2 0 , I ~ o E 'fA-39 (lormor OU 1132)

Aptll U, lW0 Pug0 21)