los alamos i fi¥htin'-ftt,.. ffmfiw•i•nn los ai . .amos
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Los Alamos I fi¥HtiN'-ftt,.. ffMfiW•I•nn fl1111 lll'f111 •• ,. .... IMI'1\JI 1t11 lhly
' lloll LOS AI . .AMOS NATIONAL LABORATORY ENVIRONlt1ENTAL RESTORATION
Records Proccs,,·in~: Facility ER Rcctlrd,\·/nd~ Form
ER IDNO. 65010 Date Rect!ived: 12/8/98 Procc .... 'ior: DIC Pa~c Couttt: 63
Prb•iJ,·~ed: (YIN) N Record Catcs:ory: p
Filt!Foldcr: ER.-vt/GOLDER TA·21 GENERAL SUPPORT FU 1 OU 1106/READINESS REVIEW/REPORTING
Correction: (YIN) N Corrected No. 0 Corrected By Number: 0
A.dtnillistrative Record: (YIN) Y
Refilmed: (YIN) N OldER ID Numhcr: 0 NewER ID Number: 0
Miscc/Jam!oU.'i Comme111s:
'NIA
I \II II\ IIIII 1111111111 \Ill\ \Ill Ill\ 14331
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MATERIAL DISPOSAL AREA T ·v~ # ~ C... ~: PRS CiROUP 21·016 ~~ ~~ 1':1~ i~
I. MOA T SITE HISTORY \ ~ ~ '\ /j
MDA Tis~ llqutd rad1oact1vc wasto disposal nren loc.:~:od at DP Wost within TA·21, whiCl'l i~ locnred on DP Mosa. MDA Tis opprox1matcly 2.21 acres 1n size and is at nn alevnlion of Jpproximatcfy i, 140 fQot abOve sea levol. TA·21 was used prtmmily for plutomum rasomch, metal production, and rclotod activities from 1945 to 1978. Additional background information 1s presentOd in ChaptNs 3 and 16.3 otthe TA·21 Oporat:lle Unit RFI Work Plan {LANL 1991. 0689).
Absorption Beds
MDA Twas one of tho first disposal area::; usco nt the laboratory. Construction of tour at:lsorpuon beds, which or13 opproximatoly 120 feet long by 20 feet wide by 6 foet deop, for aisposnl of DP West ll~uid waste was completed in 1945. Untreated waste from uranium and plutonium proceSSing lnboratones :lncltho filter building, TA·21·12, was released to the absorption beds from 1945to 1952. In 1952. building TA· 21 ·35 wa:; constructed to remove tho pluton1um and other radionuclidcs I rom tM liQUid waste. When thO :Jmount of wnstes C::1schorgoc to the absorption t:leos had roached r.cveralthousand gallons por day, tne absorption beas had to be abandoned (Rogers 1 9n. 021 6). Attor 1952, effluent from TA·21 ·35 was discharged to an outfall, now dcs1gnatcd as SWMU 21 ·01 1 (I<), in DP CJnyon north of MOAT. Howevor, o fow hundred gallons of trooted w•tstos from TA-21·35 wem still roleasod to tho atlsorptron bods at infrequent mtorvals unttl 1967. In addition. wastes from DP East were discnargcd :o the absorption bods from 1965 to 1967. The compositiOn of thO DP East wastes ts unknown (LANL 1991, 060rl).
Tho ::tbsorpuon beds were des1gnad so that atlsorptton beds 1 and 2 roco1vP.d most or tM liQuid wastos. Overflow from absorption bods 1 und 2 was then discharged to absorptton bods 3 and 4. respectively. Absorption bed 1 could havo also rcCOIVOd liQuid waste dtrcctly from il floor drain 1n bUilding TA·21 ·1 2. and obsorption bOd 2 could have roco1vod liQuid wnste dlroctly !rom TA·21 ·35 und Cld1acent 1nlluont holding :anks TA·21 ·11 0 and ·1 1 1. Effluent from T A·21 ·35 wus also pumped to two othP.r holding tunks, TA·21 • 1 1 2 and • 1 1 3, installed 1n 1952. Tanl<s TA·21· n 2 a no • 1 13 discl'largoc cl!luent to tr'le outfall m DP Cnnyon (PAS 21 ·01 1lk]) ~5 well 05 to absorption bed 4 (LANL 1991. 0689).
Jn 1959, a c&:usson was constructed otthe nor:henst corner or absorption bod 1 to study sutlsurtoca plutonium dlstnbution. TM cwsson was 30 tt deep. 6ft w1de. and 12 tt long. Two nor~zontal holos at2·tt depth intervals down to a 28·tt dcptn were dnlled into thO absorption bed ond tull beneatn tho bed. Eo:~ch pair of horizontal he las w~s instrumented, one for soil mo1sturo and ono tor gross alcha measurement. Generally, thoso stud1es showed that aloha OC11vity had porcoloteo into tho tuff ana thnt 1ts concontration decreased w1tn incrons1ng depth. An 1ncreaso 1n act1v1tV at tho 12·!1 deeth coinc1dod w1th h1gh moisturo readings at that coptn (LANL 1991, 0689).
In 1 960. wastos I rom DF> Wr1st waro diverted into bod 1 from July 6 to July 3,. 1960. Tho avorogo daily roto of this diversion was 3pprox1mately 8.000 • 6,700 gallons per d~y (gpd). From August 1 to September 7, 1960, Los Alamos tap wator was .:ldded to O<l'd 1 ilt a rato of approximately 6,500 • 6,600 gpd. S1x boreholes ranging in depth from 76 • 99 It wom drilled around tho poriphory of bod 1 1n Into 1960. Tho rughost gross alpha contont was ob:amod from n nolo dnllod ot 19 degrees from v~r:tc::ll .:11'1d nnglod undor absorption bod 1. Tho clovntod olona was detected ot a depth ot 45 !oct below the surfnco and was anrJbuted to a vertic;Jl !issuro (LANL 1991, 0689).
MDA T Hlt1tory afld Field Worlt
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In 1961, 6,400 gpo o1 OP raw was to was oivor:od :o aDsorption bt)O 1 from Juno 30 ·August 1. This was followed by nadmg top wntor to bod 1 from August 2 to August 26 at n rate of 7,100 gpd. Mo1sture distributions 1n01cntcd thnttno bod had a high infiltration cnpac1ty and there was lit11o lateml movomP.nt of wator in the tuff. The limited latoral movement is tunhcr supportod by the lack of contam1nnt1on in nolos dr1llcd adjacent to tho absorption bP.ds. However, irmgutar mo1sturo curves !or three notes suggest that percolating water muy e1thcr perch or travel rapidly along fissures. Abruct decreases in mo1sture Indicate rapid draiM.go tMt mny b~ COUSCCl by !ISSUrOS.
Olsposnl Shafts
Sixty-two disposal shafts, which arc 6 to 8 foot in diameter and 1 5.2 to 69.:3 foot in depth, were drilled primarily botwoon absorption b~?ds 2 and 4. Stnrring in May 1968, radioactive wastes, including noutrallzcd amor1C1um, alkaline lluondo. and plnnt sludge, wore mixed with cement in the building TA·21· 257 pug mill and discharged as a slurry into the shafts. Building TA·21·2571s a wnsto treatment tncillty constructed in 1 96i to replace TA·21 ·35 and rl'ma1ns m operation today. Five sMfts navo bothysphoros containing olutonium-239/240 (Pu-239/240) or other mixod flss1on products buried at vanous doptns with :he cement·flllad shafts. Th~ oporat1on was discont1nuod in 1983 (LANL 1991. 06e9: ana Flogors 1 9n. 0216).
Accord1ng to LANI. cmployem; involved in :no operation, comont pasto discharged to the shat1!i would occas1onolly ·oxptodo" c:unng the comcnt cunng proco::.s. Tho employees roponod tnut theso "oxplosions" woulo spread the amoriCium·contamlnated cement posto on tho grouno surfoco around the disposal shafts. Tho pasto would be cleo nod up ottciWma. It was initially thOught thnt sugar was <lddod :o tho cement slurry to slow tho curing process anc:l rttduco or eliminate tho chance for thOse •oxptos1ons". Howovor. Dav1d Salazar. EM·RLW. statod that sugar was Mver used. but a commcrc1al CC!mP.nt cunng retardant was usee. Although tho reason for tM "explosions" is sull unknown. it is thought mat a chemical reaction occurred c~usec by thO Mat of tho cement cunng process.
Retrievable Waste Storage Aron
In 1974, :ne Rr.otmwable Waste Storage Areo (RWSA), a p1t monsunng 60 :aet long by 30 leer w1de by 20 fMt doop. wos •)xcavotod between absorption beos 1 and 3. Boginmng 1n 1975, treated wastes from TA· 21 ·257 contatning concentrations greater tt'tan , 0 nC1/g Pu-239/240 and Am·24 1 were m1xed w1th cemonr and then pumpoo into 20·foot long by 2.5·foot 01ameter corrugated metal pipes (CMPs), wnieh were stereo on ond in tho RWSA. Tho pipes were removed m 1984 and 1986 and tronsferrea to TA·54, MDA G. nnd the RWSA backfilled (Rogers 1977, 0216).
The CMPs wero sealed on oacn (.!nd w1th a concrete eno. It was rcoorrod that tM cold cao on ono ot tho CMPs broke loose and amencium-con:aminatnCl ::;lurry !>PIIfcc onto the tuH floor ot the RWSA. AlthOugh it was also reponed that the spill was cleaned uo to stanoilrds 1n place at thO time. we believe that wo drilloo mrougn the spill location w1lh borehole 21·05051. Elevated gamma activity nnd o very high calcium concontmtion was dotoctcd in this borehole nt a depth ol npproxim:.ltoly 22 !oet bQiow grouno surtnco (bgs).
Distribution Box
The distr~but1on oox, located betwoen absorptiOn bod!\ 1 and 2, recc1vod liqu1d wastes through subsur1ace p1oelinos nnd dischmgod the ellluont first to bee 1 nnd thon to bed 2. Tho aistncu:1on box was not inv~sugotod directly but was incluCled in the ovP.rall MDA T sut:Jsurtacc mvesugatton.
MOA T HI• tory •rtcl Field Work
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II. PAS DESIGNATIONS
The absorption oeos and dtsoosat shafts of MOA Tam designated as PFlSs 21-016 (a anc: c). respectively. while thO drstrJouuon box 1:> dm;1gnato<:1 PRS 21·01 1 (c). Tno RWSA should bo dostgnotod PRS 21 • 01 6(b). Howovor, somf;l contusion ox1sts rogurdlng the PAS dos,gnotton of tho AWSA Md thH cmsson mat wos constructoo .11 the northeast corn or of absorption boo 1. ThO 21·016 SWMU Report. datod October 31. 1990. sroros "A pit, TA·21 ·186 (SWMU 21 ·016{bJ), was ouilt In 1 !=!59 ol rod wood and it was ~bout 6 teet by 10 feet by 30 toot doep. ThO Pit wastocatoc between two rows ot absorpuon !Jods. This Pit, referred to a:; ti'IO 'SnJ.lko Pit', was used for monttonng purooscs and did not contain wnsto. From 1974. to 1902, transuromc wostes wero mixod witn comont and pumpod 1nto corrugated mota! p1pos mto tno 01!. Thoro woro 175 corrugated metal pipes (2.5 teet In diameter, 20 teet long) in the pit, WhiCh was IOc.'lted betwoen absorption OP.ds 1 and 3. In 198410 1986. the pip"s wore transported to TA-54 with the intention ot shipping thOrn to tho WlPP site near Carlsbad, NM," The SWMU Ropor1 also states ... A 30·1oot deep caisson {lhe 'Snake Pit') was dug to obtain hOr~zontal cores 1n 1961 ..... {Solio Waste Manogemont Units, Aooon, Vol. II t:.IIV, [TA-10 to TA·25], 7512).
Tho descnpllon tn tM SWMU Rooort contains sovernl Jncons1stonc1os. For instanco. thO SWMU Repon Gtates that the MSna'<o Pit" was used lor monJtonng (WhiCh was tM l)urposo of the cmsson) llnd did not contQin wasto, and :hon s:atns thot trnnsuron1c wastos woro pumped 1nto corrugll!od metal 01pes in tho pit (whicn was the purposr.! ot tM AWSA). In aaditton. tho wm ·~~~~ was usee mtercnangonbty for both 111e c<:~isson Dnd thO RWSA. 11 m ctoor by tno doscnptions 1n tno SWMU F!opon :hilt. nlthOugl'ltM pnys1cat doscriptJon ot tno co1uson (Snal<o Pit) is g1ven, tho RWSA is actually :no SWMU bocouse " ... trnnsuran1c wastes wore m1xed w1th coment and oumpoa 1nto corrugatP.d mc:al PIDOS tnto tho p1t." Thorr:~toro, tho 1nvost1Qiltlon to !:lo per!ormod w111 nddross the AWSA as woll as thO aosorpt1on beds, oisoosnl srwtts, .:~nd dJstnbu!lon box.
Ill. ASSOCIATED PRSs
The Iormor mdustnat !iqu1d wnstc :reatmont fac,hry, TA·21·35 (PAS Group 21·010), bP.gan ooorations 1n 1952 and wus oecontamtnatP.d and decommtssloned 1n 196'7. TM building was converted to a wa::.te troalment tac1li:y 1n 1952. <:~nd was mod1fieo nr.o added to scvNnt:imcs throughOut its yenrs ot oporatJOn (LANL 1 9!.'1 1, 068fl).
A Phase I RFI wna conduc:oc: at TA·21·35 in 1994. Rosults ind1cntod !:hallow mdiologrc<ll conrnmmnrron near tho SW and NE cornors ottho former bUJidinQ locatton ns well a:; tno termer location ol nbove·ground storago tanks TA-21· 1 10 nnd ·111.
Building iA-21·257
ihe new tndustnnlliOUid waste troatmentt~C:IIity, TA-21 ·257 (PI=lS Group 21 ·01 1). began operations in 1967 when ooorat1on5 wore discontinued at TA·21·35. In addition to thO routtne wasto stream troatm~nt process, a var~oty o! other w.:~stes cla!;Siflod as ·co ten wastes" wore troatod at TA·21 ·257 from 1 967to 1984. From 1968 to 1983, batch was:os that roQuirt1d the greatest treatment wore those tnat had high· dissolved solids or wore highly acidic. Trontmont of these typos of batcn wastes 1ncludod neutrnliZil!lon with 50% sodtum hydroxide, then mixing With cement in a pug mill, and finally, pumping tM cement paste to tho aspnolt·lined disoosal shafts ill MDA T (LANL 1991, 0689).
PRS 21•011(k)
PRS 21·01 1 (kl {NPDES No. EPA050050) rout co industrial waste water from TA·21 ·257 through tanks TA-21. 1 12 ana -113. Tho discharge line ran NE toward OP C.:~nyon (lnd discharged onto the north side of
MDA T History ttnd Fit!ld Work Prlgtr3
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OP Mesa. The line from tanks TA-21·112 anc ·113 was a 4·in vitrtfu~d ctay ~100 (VCPl tMt drscho.rgod to an outfall ditch and 1s no longer active.
IV. PREVIOUS INVESTIGATIONS
There 1S an abundancC:' of histoncal radionuclido data lor MOAT from subsurface charactcnzntions in 1953. 197 4, .;:and 1 978, and surtaco cnnractorizn!lons 111 , 984, 1986, and 1 993. The radionuc!idas detected (trrtium. strontrum·90. amercctum·241, cosium·137, ;:Jiutontum-238. ano clutontum·239/240) nrn consistent with the suspected eHiuent conslltuont$ rrom tho urantum and pluton1um procosstng laboratories, from the floor dra1n in the fi!tor building (TA·21·12), and lrom TA·21·35 and TA·21 ·257. Each radionuclido was detected at a concentration greater than tis rAspocttve screening action level (SAL). Those historical data aro discussod in Soctton 16.3. 1 .2 of tho T A·21 RFI work plan (LANL 1991, 0689).
In 1953, E. R. Horman (1954) ol the USGS initiated a study to investigate !he distrtbution discharged into tho beds. Five holes were drilled into and around thO aosorptlon l)eds. The datn showod tl'lat, ~~ that ttmc, little movemont of rndionuclides had occurrod MtwoM thO absorotion bed::. Highor radionuclido concentrations were prosent 1n thO holos located in the bods ond an obvtous tneronso 1n plutonium concentration occur~ed tn an angled hole where 1! intersected ood 1 (LANL 1991, 0689).
In 1974, a l'ole was dnllod to a cooth of 14 f1 into nosorp!IOn bed 3. All Silmolo results wcrr~ aoovo the worldwtdo faltout OYCkground levels. The htgMst lovols or nmor~c1um wora at tM surfaco and Mtwoen 8.5 ana 10ft ana the highest levels of plutontum wP.re at the surtnco nnd botween 12.5 and 14ft (LANL , 991. 0689).
In 1978, holes wArO dnllod 1nto both beds 1 and 2. nne tnoso results wero rcoo~cCI by Nyh:.ln. ~~1. a!.. (1984;1985). Tho data indica:oa tl'l.lt both plutonium and amcric1um nave movod to depths ot 100 tt beneath bed 1. The radtonuchccs had m1groteelto a depth of apprO)(Imntoly 46 It benor~th bod 2 (LANL , 991. 0689).
In 1964, cnvironmontnl survl:'tllanco surlnco datil were coi!QClecl at or Mar MOAT on a 20· x 20·m grtd at depths of o to 1 em, 1 to 10 em, and 10 to 30 em. The surv~y showed vary taw c!flWJtod tritium love is (i.o., i.lbovo 7200 pCi/L used a::. nn uppor lim1t lor background) (LANL , 991. 1 689). The elovotod levels occurred in samples from tM 01~epor licolh tntorvo!s 1n the area between tho northern ronco and absorptiOn bod 4, In contrnst, Pu·2:38 and Pu-239/240 wore al;,ovc 1110 bacKground IIO'vel5 (0.005 pCilg tor Pu·238 and 0.025 pCi/g for Pu·239/240) at nil sum piing locations.
In 1986, surtaco dat::l wme col!octod on a 1 0· by 1 O·m gnd at n aepth of 0 to 5 em. Pu·238, Pu-2391240, and Am·24 1 tovots g~norillly cxcoodoa tnoir background lovols. ThostJ olcvnted tovels rallect il wrdespreod source ol thoso nuclides on tne sur1aco ot MDA T (LANL 1991, 0689). Concontmtions rt~nged from bllckground levols to 35 pCt/g Pu-238, 70 pC1/g Pu-239/240, and 260 pCi/g Am·241 (I.ANL 199, 1 0689),
In July 1993, a surface invosttgatton was conducted by coiiP.ettng 5amples !rom 0 to 6 in wtthin a 65.6·1t by 65.6·tt grid. Additionally, 5amolos were colloetod from a to 12 in wltntn a drainage to OP Canyon tnat is non11 or MDA T ano wost of PRS 21 ·01 1 (k). Cs·137, Sr·90, and Pu·239 wmc measured above their SALs 1n draiMgos that may nave been atl~tcd Dy F'RS 21·011 (k). F'u·239 l'lil:> moasumd nbovo 1ts SAL <Jt ono 1oea11on along ti'IO porimotor of tnc cap where Am·24 1 was also dot~ctod aeove tts SAL.
Chapter 3 at tho TA·21 RFI worK pl~n prov1des more informatiOn rogardtng tM ortgtns of RCRA constituents suspt..>cted to oc orosent at MOAT (LANL 1991, 0689), Jl!nough tMro wns no existing C1ata tor RCRA constituents from ony MDA T subsurtaco charactenzal!ons pr1or to tho FY97 RFI. Tne scmonlng assessment performed on the MOAT surface RFI data 1dcnt1liod oo!ynucloar Jromntic hydrocamons (PAHs). Concentrations of thoso PAHs woro conslstont w1th uroan and tndustrrallcvels rn Los Alamos County.
MOA T Hl•t"'Y IH'Id Field Worlf
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Sucsurt~cc hydrogeologic data colloctod dunng thO anll1ng and complolion or I.ADP·3, .:1 monnorrng woll tn LA Canyon. and LAUZ·,, LAUZ·2. and LADP-4, groundwater monllonng wolls in DP Canyon. are nva1lablo tor use In subsur1ace transoon modeling at MOA T. Addrtronal datn wns gathOrcd by everett Spnngor !rom archtvea core collected dunng the arilllng ot a r.Jeep borehole, MOA V·OP. wh1ch was loeatod Mjacont to MOA v in TA·21. Sa mole!.\ wNe also colloctod from ono MOAT borohoiA for hydrogeologiC unulysot,, Thoso c1<t!J mciudu, bur m<£y not be l1m11oato, poros1ty, bulk dont~lly, m1nor.:stogy, saturated hydroulic conc:ucuvuy, nnd moisture chilr~ctonsuc.
V. MOA T FIEl.O ACTIVITIES
Objectives ond Conccptunl Model
The objectives of the Phase I RFI at MDA T wero to:
1 . dotina tl'1e sourco term,
2. dotcrmine the lateral and vort1ca1 distrii:Jutlon of contamiMnts.
3. assoss rna long-term nsk po&t.•d by MOAT to groundwotor,
4. assoss migmt1on anc oxposurA pathways.
5. dofino tho TA-21 OU concoptuol moool. ond
6. provida tnitial cosVnslo. raduction o~umatcs lor various remedial olternnhvos.
The conceptual model tor MDA Tis oresen:eo m Chclptors 5 ond 7 or tM T A·21 OporJblc Untt AFI Work Plan. All TA-21 PASs wom placM into conceptual eatogor~ns. with MOAT boing cato~oriz(\d ns havtng deep licuio releus11s. subsurl~co solio wa:;\e oi:.posals, ano surtuco con:om1nutton. Poton!lill roleaso/tronsoort mochanisms include:
1. unsaturated 11ow o1 hc:utds '"tho vadose zone.
2. v.'lpar·phase tmnsport in tho vadose zone,
3. erosive exposure of subsurface contamination, nne
4, surface oros1on and ontr::ltnmont ot contammnted matonal in sur1Dco run·ot1 or dtspors."ll of contammotod matortnl by wind. Human or torrostrtal animal exposure to posstble silo contnmmants may occur through mhalat1on of suspended partrculatos or mctdOntill mgastion o! or cormal contact with soil {LANL 1991, 0689).
Geophyslc:ol Survey
A goophystcal survey was conducted 10 November 1 996, 1n nn attempt to nssess tho locallon, orient~ lion, depth, and wtdth or the paloochnnnel. and to u:1ont11y tno boundaries oltha lour \l:Jsorotion bods, tho RWSA. and the concreto disposal shalt IIC!Id.
An eloctromognotic survey was conouctod using a hand·held, digital, broad·band EM sensor. Tho survey was conducted along survoy lines spaced 2.5 loet apnn, wnh an in·llno snmpling intP.MII o! ~pproximatoly 1 root. ihis interval provided approximately 19.000 sampling locations. A ground·penctrattng rndar survey was conducted along oloven t:~rofiiP.s across thf3 s11o. Each protilo was surveyod with reflection data recorded at 1 ·foot intorvals using throo di!foront troquenclos. The surveys conttrmed, at loast
MOA T Hl11tory ~tnd Fl11ld Worlr PrtprtS
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partially, tho goodct1cally survoyeC! locations o! the nbsorpliOn bods, ns well as severallocnl anomnlies 1ntorprctcd to co mnn·m<ldo structures 1n the ;;m~CI.
Drilling
The drilling an~ subsurface sampling inv~sllgtl110n bc9an m Occemoor, 1996. A CME 750 dr1llmg ng, OQUIPPCd With !;tandard 8.25•1nCh OUtSidO dinm~tor COOl. 4·tnCh lnSidO diLlmQtQr (10) hOIIOW·Stl)m auqors, was usee to dr111 ellen bOmhOio. As tlia augers wem ildvancl'!d, cont1nuous &ubsurtaco cor11 Silmolcs wore collected usmg n 3. 125·1nCh 0.0., S·loot long, strunloss steel, split·bmral sampler.
A total of 19 boreholes wcm drilled dunng the ~nvost1g::tt10n. Eign~ vor:1cal borehOles were dr~llea directly tnrough tho absorption bOds 1n ordor to establish thO vmttc~l oxtont of contaminotton undor tho bods. Two vertical oorcnolos wcro drilled througn thO Iormor AWSA 1n ordor to determine if any contamination cx1sts biJiow !M RWSA. Two vort1ca1 boronolcs were c:nllcd near tne aast ond of the dispos&ll shatts to evaluo:o tho pnloocMnnol and assass whether tho cnleochannet hils provided a pothwny tor oH·sito transport or contamlnatton. Four verttc~l ooreholes were drilled outside ol tho absorption oeas to assoss tho lateral extent of contamination touna in tho ooas. Throe angled borel'loles were dnltod unc:or tho disposal snatt:; to cvaruato tho pro!lcnco and venical extent of contamma!lon benoath the sM!ts.
Borehole Summaries
21·05051: Ab:;QIQtJOO 6~tt.J.
The borehole~~ located 1n absorption bod #1 (approximately 35 tt trom the n.astorn edg~ ot tho survoyed bed loc::lllon) and wa5 driiiCCl to a deeth of 150 It ogs. Tho bed nas boon covered w11h accroxtmately 6 II of backfill. Tho absorption bod 1s consistent wtth the C:P.scnption in Rogers' report Jnd contains raciolog1cal contnmlniltiOn. Tho upcor modorately wold~d U01t 3 tuf1 was noticeably mo1st tn core samples to a depth of 40 ft ogs where tt !)egan to dry w1th depth. Tho mo•stura content increased ar tho contact wtth :ne towN unwolded Unit 3 tuft ( -60 t: bgs) and rcmmned mo1st until the Untt 2 tut1 contact ( .. 1 1 0 ft bgs) where> i: c:utcKiy dTiod with dOPth. Elev~ltod raatoactiVIty was round tn the bod and tn thn und(lrlying ~ulf. Tho higner levels of rnd nctiv1:y wom touM in 11'10 uppor Untt :3 tuff (not in tM nbsorr;:ltlon bod as _,xpectod), whito lowf.'r r:ldtologlcollevets wore found in tho lower Unit 3 tuff and dropped ott cmmntiC<llly at:noar the Untt 2 tul1 contact.
Met objOCtlve of evaluating RCRA constituents ana determ1n1ng vertical oxtont of radtologiCOI contamlnatton.
2.1·05052· Absor::::tton 6~d 1/Pulcocoonoc.l
The borE!I'lolc is locatod southwest ol tho MDA·T fence nonr tho NE corner of building TA·21·228 tn absorQiion bod "1 (apcrox,matoly 1 a 11 from the wP.stom odgc of the surveyed boO locatiOn) a no wns drtllod to a deptn or 1 50 tt !:lgs. Soc~ ill mntonat1s ovtdont to 6 11 ogs whoro o toyer of decomposed gras~()S was located. The aosorptton bod may or may not have ooen loca:od. TM dopth at which tl'lc absorc:ton bed woulc t:to locatoc contains more s1lt one clays than silnd. Tho palooch:lnnot was located at a depth 10·2i' 11 ogs. The sands in !ho upper part of thl? cMnncl uro mo•st and wenkly comontod wh1lc tho :ower sands are motst and non-comontod. A dacitc/rhyoltto cooble ~ono was encountered at tno bottom ot the channel. Tho tuft bonoutn tho paleochannel does not contain the some visiblo mo1sture content as encountered tn 21 ·05051. Rlldiologtcal contnminatton wus not dotocted in any 11xod lab 5amplos collected from the borehole. HydrogeologiC samples wore collected in tho upper port10t'l of the paleochannel and submitted to OBS for anolysos.
Met objecuve ot I)Volunting RCRA con~tttuents and dotormtn1ng vcn1cal oxtont of rna1otog1ca1 contnmtnatton.
MOA T Hl•tory errd t:ltJ/d Work
'" \'; ;,J,
, .. .... '
, .. ()
2.1 ·QSOS~: AQ:sorouoo B.c.d.Z
The borehole is located in nbsorpt1on b~d lt2 (opproxlmatoly 35 tt !rom tho wostem odgo of thO survayod bf;ld location) ond was dnllod to a dopth of 90 tt ogs. ThA bed Ms t:Joen covered with approximately 6 ft of backfill. Tho uosorptton bed is consist11nt wrth thO description in the Rogers roport and contains high levels of rndlologlcal contamination. Low lovels of ro.diolog1ca1 contilmlnatlon •s in the tuN to ooprox1matoly 30 It bgs. From this point on, the rndiologic~l contamination was found only in fractures. and increased in tho fractures from 30 to 67 It bgs wnoro they dropped to l:lilckground levels.
Met objective of evaluating RCRA constituents and determining vertical extont of rndlotogicat conto.mlnotlon.
4-1 ~QS054: Absornuon Bed 2
Tho borehole is loc<ttod in absorption bod 112 (OPP!Oxtmataly 43 tt !rom tM eostorn odgo ot tho survoyod bed loc:auon) ond was drilled to o depth of 60 !t bgs. Tho bed has ooen covered with approxlmlltely 6 It ol oacl<11ll. The absorption b~d \s cons1stont With the dosenQtlon in thO Rogors report and conloins elevated radiological conramrnation. Elevated radioact•vity was oncountorac in thO tuH (and fractures) to 36ft bgs.
Met ObJE'Ctivt:! ot evaluating RCRA constituents Mel detcrm1n1ng ven1eal oxtont of rlldiOIOQICD.I contamtnauon.
21·0~Q55: AbSornlioo BQC: 4
The borehole is located in absorption bed 114 (approximatoty 39 It from the western odge of tM surveyed bed location) and was dr1llod to n depth of 1 5 11 bgs. The bed has been covered with ai'PrOxlmotoly 6ft of backfill. The ab:.orptlon bed is cons1stont with thO d~:~scnption In thO Rogern rcl)ort and contains high levels ol rndlological contamJnouon. The £luger angled ot1 vertical whilo drilling with tno contor bit through the cobble zone at the bottom ot the boa. ihe hole was atlanaonod ana a sP.Cond borehole (2·05073) was drtllod approximately 5 It west of 21 ·05055.
Did not meet CbiOCtlvl) becuuso borehole 1'1<10 to co acanaonecl.
21·05056: Ab.somtJOo Bod 4
The boroh0h3 1s located 1n absorpuon oed u4 (approximately 39 r. !rom the eastern odga ol thO surveyed bed focat10n1 and was drilled to a depth of 50 It bgs. TM Oed has OMn cov.,rect with npproximately 5 tt of backfill. The ab~orpuon t::od is consistent w1th the descnpt1on 1n tno Rogors report llnd coMt:lms bnckground levols ot radioactivity.
Mot objective ot ovnluaung RCRA constituonts and datermu'lmg ven1ca1 axtont ot raaiolog1cnl contamination.
21 ·05057: RWSNPa!eoc:oanocl
The boroholo is loentod in tho FIWSA {::~pproximate!y 20 It from tl'lo oastorn odgo of tho surveyed FIWSA locaUon) and was cnnoo to a dP.Pth of 50 tt bgs. Tha cover matenal ovor tho RWSA's surtaco I!S
indistlnQuishnble from the backfill matorlal in thO RWSA. The txlttom of the RWSA Is oo!levod to be at approximately 20·22 tt bgs. Photographs of the RWSA {boloro tho placement of tho CMPs) show thnt the eastern end of the RWSA was excnvatod into the paleochannol (sands, grnvels, daclte/rl'lyollto boulders, and cross :)Oddlng ::sre evident In tho south wall) and that the floor on tho e~stom ond was not excavated into tho tuff. Directly bonoath the FIWSA's floor. the drill penetrated Into a moist medium-grained s<1nd
MOA T History •nd Field Worlc
... ;.. (~ ,_, ~ .
• -· I
with black dacite boulders. The backfill motonal in the RWSA has sligntly elevated radiOilCtivlty wnilo tho dac1te layer contmns vory h1gh levels or radioactivity. Noto that tho d<:~cuo/S.Jnd layer ilnalys1s olso h~d ox:romoly high levels of catc1um. This is 1n tho ama of u n:mortecl so111 while tilling a CMP w1th thll c:oment slurry. Photograpns ott he oacllc/sand aro avfutablo tor rev1ow. The tuH beneath thO pateochonnet does not contain any olevatod radioactiVItY (note thattr::~cturos '" the tuit were not encountered in th1s halo).
Met objoct1ve of ovaluatmg RCRA com>lltuents <1nd dotermming ve>rt1cal oxtont of rndiolog1ca1 contllmmation.
Noto: it is possible tnat the aac1to oouldern may actually bo ccmon:. O:Jo to tho high levels ot rad, tho dacite(?) bou!dors were not Mndlod nor closely 1nspcctod. The sample I rom tnis zona consisted ot s11nds and slits with minor piocos of ducll€1. Similar 1ook1ng coment was oosorvod in bor,holo 21 ·05062 whon It breached u di:.;posut shalt.
21 -ososa:.....a.~.&
The cora nolo is locnted in thr~ RWSA (approx1matoly 40 It from tho NW edge otthcl 5urveyod RWSA locotlon) and was drilled to a oopth o1 50 It bgs. The covor ma:onal over tho RWSA is indlstlnguishablo trom tho oncl<1111 matanol in the RWSA. A shl:Jrp b<.~ck1illt1u11 contact1s locutOd ill 1811 ogs. 11 is bolioveo that tho borenolo wa:i dnlled 1nto tho accoss rood into tho main p1t of the RWSA. The underlying tuH IS solid and non·lracturod. Slightly Oh'watod rildiOOCt1v1ty was cncountorod '" thO Mcktill matortal.
Met OtlJeCtlve of cvoluatmg RCRA c:onst1tuents ond dotc.>rm1ning vm11cal oxtont of rndiologlcat con:amrnutton.
The ooroholo is located approximately 10 It cast ot tho oisposnl snalts <:tnd wns driiiP.d to a dApth of 50 f1 ogs. The uppnr 8.5 It con!ilfi:s ot covor and overt>urdtm matonnl. Pnloocnonnol sancs wPrrJ oncountorco !rom 8.5·36."· !t bgs. TM paleochannel consisted o! mo1st !1M to course grn1n sands With V<Hy1ng amounts of smnll PeiJblos ar.c grnvel. A largo tuH boulder was al:;o <mcounwreo Q! 25 It bgs. TM chornctcnStiC dacne:rnyol1te !:loutdors .:~t tho bot1om of tho cMnnol wNo not oncountorr.d. Elevated radioactivity was not encountered 1n tho channel or underlying tutt.
Met objocuvo ot (.Watuaung RCRA const1tuonts and dotorm1ning lateral extent ot raoiologiCi:\1 contamination.
2.:1-05060: Ojsposo.l ShaJ.ts ilrutAt!~.Q.tJ.on Br>d ;::
ina boreholo is loc~tod approximately 30 ft south of absorpUCJn b~d rt2 and was dnlled at n 30-degreo ang~e from vonlcnt to th1J NE to got undF!rnoath tno d1sposat shafts. The total length ot the ooroholc is 1 75 tt. ~nd the vertical depth i5 approximately 1 52 1t bgs. Elevated meloactiVIty (ctMr than tnuum) wus not oncountcrod. High levels o! tnt1um wero found in the nonweldcd Unit n3 Mel Unit 112.
Met objective of cva1uat1ng RCRA constituents and dotcrmin1ng var11Cill nne lateral oxtont or rndiolog1cal contaminatron.
21·0506J; Ojspo::;"t SOL!ft:>
The borehole is lcC4!tod approximately 15 :t nOI'!h of absorption bad rr3 llna was anlleCl ut a 35 dog rae anglo from vi'Jrtlcal to thOSE to get unoor tM disposal shnfts. TM total fengtn of the borehole is 190 !t and the venlcol depth ir. approximately 157 toot bgs. Elovatoo rodloaetiv1ty (otMr than tnt1um) wos not oncountorod. H1gh tovots ot tnt1um wero found in tho nonwctceo UMII tt3 and Unit u2.
MOA T Hfrltof'/ and ,:11Jid WorK
, . .. ....
L, .. .... r: .. ,. , ..
Met objectivo of evaluating RCRA constrtuonts and dotormining vorticJiand I<Jteral oX1ent of r:tdiological contamination.
21·05062: Qlsgosal Sbatl~
ThO borehole is located approximately Sit north or tho NE comer of obsorptlon bod ,3 Lind was drlllad at a 30 degree anglo from vertical to the SE to get under tho dispo~l shafts. Tha to:alleng:h of the borehole is 82.5 ft and the vertical depth is approximately 71 ft bgs. Cement was oncountored at 79·79.5 linear ft and drilling was stopped. Drilling continued on a 3· tt run to confirm whothOr or not a disposal shaft was oncountorod, which wo had. The grout from 79·80 llneor tt was a dnrk gmy, solid c:omont. Tho grout fl't)m 80·81.6 linear ft. was moist {simi lor to moist modelling clay) and containod pioeos ora plastic bag and gloves (lrom 81.8·82.5 linear tt thoro was no roeov&ry). Elevated radioactivity was not encountered in tho tuff. but very high radiological levels wore present in tho cement grout. Nota tMt the grout is still moist and hos not set in over 20 years.
Did not meet objective because tlorehole was abandoned when disposal shal1 was encountered.
2J ·05063: Soum ot 6bsom!lon Bed J
The borehole is locntod approximately 25 tt south of absorption bed ,,, and was dnilcd to a depth ol 110.5 ft bgs. The intent of this borehole wac to assess lotoral oxtent of contamination from absorp:ton bed #1 nnd tritium to the top of Unit ~t2. Background lov~ls ot mdioactivity wore detected in the borehole.
Met objoctlvo of evaluating RCRA constituents and determining vonlcal and laternl extcnt of radiologtcal contamination. May need to !u"hor ovaiuato lateral oxtent of organics detoetod.
21 ·05064; Soutlj Ot.hbsorpfloa Bed zcrwach 8SSOCjQted wltb BuildlQC TA·2l·35
ThG boroholo is located approximately 25ft south of atlsorption bed 112. ins1de thO tootprint o1 Iormor building TA-21·35, and was drilled to a oopth of SO It b9s. The intent of this borehole was to <:1ssess lateral extent of contamination from ab5orption bod tt2. It is beiiovod a trench nssoetatad with TA·21 ·35 was drilled into. Backfill ,.,atonal was oncountorcd, with hi!:Jh levels of rodloactivtty, to 14 It bgs. The underlying tuff is solid, non· frncturod, ond has no elevated roaioacttvity.
RCRA constituonts wore not analyzed tcr per contingency in SAP. Met Ob)eetivo tn determining vertical oX1ont of radiological contamination. May need to further evaluato lateral oxtont of radiological contaminotton detected in trench in borohoie. Trench may havo been assoctated w1th TA·21·35. So11s in t~ench wore saruratod, so may also need to Qvaluate whcre water is coming from.
?.1·05065: Noah at e,bsorcuoo Beg 3
Tho ooreholo Is locD.tod approxim::uoly 20 tt north of aosorption bod tt3 and was drilled to a dopth of so ft bgs. Tho intont of this boroholo was to assess lateral extent of containment from absorption cod lf3. Elevated rCJdloaetivity wos no: encountered In thO tuft.
Mot otJj~:~ctlvo ot evaluarrng RCRA constituents and determining vertical and lateral oxtent ol rodioiogicoi contammo.tion.
MOA T Hl•rory and Field Wort<
b ·u . . .. (~ ,!;.: _, r, t .• .. -(1 •
21-05071' East ot Oisposul Sbansa:alc_ocn~
Tho ooroholo is 1ocatcd approxtmately 12 It onst o! disposut shult n2 nnd , 41t north ol borohoto 21 • 05059. Boronolo 21·05071 was drrllod to a dooth or 200 tt bg:;, Tho ul'per S.Sit consrsts of covor and overburden matorral. PniJJocnannot snnds w~ro oncountor<ld !rom 8.5·34.3 It bgs. Tho pntooct'!onnol consts:ea ol mo1M !Inc to cour.;;," grQm sanas w1th vory1np amounts of small peobtas nr'ld c;rovl!t. ThO cnaractertsiiC cacue/myohte bouiC:ers 'Nero ~?ncountcrco i.JI 30.5·34.3 fl bgs (the oottom of :t,o chunnol). Elovated radtoncttvity, except tntium. was not oncountC'md 1n the channol or underlying :utt Elevated trttium was oncountored from approxrmotaly 20 fl tlgs to approx1matoly 150 f! bgs.
Noto: The borehole was drilled to a 200 ft depth chas1ng tntium "hilsR w1th il hand-held lnstrumf!nt. The tritium results do!ectOd with tho hond·hold instruments d1d not eorrl!llato with tntium rosults rocoivod !rom the TA·2, raclolog,col scroonmg lob (RSL), t.e .. lielc 5ereentng results wero muen htgMr tMn TA·2, rndiological tnb rasults. Thts indtented that WP. wero poosit)ly chasing trttlum vapors tn the boroholo from 150 to 200 tt bgs tlnd not actual tnt1um contom1nation.
Mot objective of evaluating RCRA constituont!i and dotorm1ntng vertical and latornl o)(!on: or rnciological contnminatton.
21-QSOj;3· AbsOQ!IOO Bc..d.A
Tho corcholo IS rocatoc in aosorpt1on bed 114 (approximately 35 tt trom the wostorn odgo o1tho survoyed oed loc::~tronl and was drtllod :o a depth of 70 t1 bgs. Tho bed hils coon covered w1th apprcx1matcly 5 rt or backfill. Tho absorptton bod IS con~tstont w1tn :he coscrtption tn :M Rogers report and contRins Alavated radiologteal cont::~minr.l!lon. Th1S boronolc was cnllcc: 5 tt wost of 21 ·05055. wl'lieh was tNm1natod at , 5 li tlg~ a11or tho auger angled off. iho TA-21 RSl. dato tndtcatod tho: otcvotod r::tdrooctrvtty wns orosent to the oonom of tM hole, but hxM lob data dio not con!1rm tho RSL data.
Mot OOJective> ol ~votunttng RCRA constltucn:s :md detcrmrn1ng vontcal oxtent of rodiolog1ca1 contommation.
21 ·050j4; NM!) Ol.hbSO[Q\100~8~
Tho oorenoto If• locntod approximiltcly 15 tt north of nosorpt10n coo n4 ana was dnllcd :o a Ch?PII'I of 50 :t ogs. Tho 1ntcnt of tnis boroholo was to O!isoss lateral ~xtont of contamination !rom nbsorptron tlod H4, Elevated raC!IOOettvtly was detected only in tM upcor 1.5 " wtthtn tM eovor mntcrtal.
Mot Objective of ovnlunung RCRA consHtuonts and doter:n1n1ng vort1cnl and la:oral extont o! mciologccnl contnmmauon.
21·050i5: ~~or:;,ttOQ B~>d_~
The borehole is located 1n thO m1ddle of absorp:1on bcou3 <lt the ovor11ow PtPO locauon Mel was drlllod to a doptn ot 70 tt bgs. The bed Ms been covemd w1th approximately 5 tt or cover mntenal. The absorptton bod is consistent w1th tho description in tho Rogers roport and contains elovatod radiologrcill contnmlllllllon. Tho tur. undortymg tM al:lsor::mon bed contoins elevatod rtldioacttvtty to opproxtmately 22 11 og:;. A largo tr~cturo system w1th olovatOd radioactiVIty wns eneountored from 45·49 It ogs. A motst silty sand tnnt contatnod n , ·inch rounded clast o! dacito (rhyohta?) was cncountorod at 47.5·48.5 It bgs.
Me>t Ot)jcetivo ot cvalua!lng RCRA eons:itucnts and delermtning vf.!rticai extant o1 rnCliologtcnl contamination.
Prw]r! 10
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MOA T BOREHOLE SUMMARY
BorohOIO tnciiMtton FIMAD ID (Anglo Altmuth Total Elovnllon Field Scrounin~ nnd Common!~ Numoor from Oopth (H)'
hort70ntall fit) I
21·05051 190 NA I 150 7140.58 20 • 2.600 cpm alpha !rom 5.0 • 67.51t ond 140 • 360
c:nm bOta/rmmmn from 5.0 • 40.0 lt. 21·05052 90 INA 150 714,.99 No elovntQd VOCG or rt~di011C:t1Vt1y bnsod on hold
scronninrJ. 21·05053 90 NA 90 7140.70 40 • 26,000 cpm alpha and 120 • 3,800 cpm
boiNOAmmn from 2.5 ·60ft. 21·05054 9V NA 60 40 • 8,000 cpm alpha and 120 • 1 ,600 cpm
bntnlqammn from 5.0 • 45.0 ft. 21·05055 90 NA 15 7134.35 700 • 1,060 cpm olphu and 220 • 460 cpm
Oeta/gnmma from 8.5 • 15.0 ft. Refusal at 15 tr, - Roplneod wllh 21 ·05063
2 1 -ososs I 90 NA 50 7133.94 60 and 67 cpm all)hn at10 • 12.511 ana 15.0 • 17.5 ft. msoocllvlllv.
21·05057 90 NA 50 17137.79 15 • 52.000 cpm nlphn and 320 • 40,000 com bntnfoammn from 20 30 ft bllr.Od on field scrnonino.
21·05058 90 NA 50 7137.15 No olcvatod VOCs or radioacllvity Oased on llold scrBCning.
21·05059 90 NA ISO 7136.96 No olovatod VOCs or rudloactivtty bnse<J on liold !lCrMnino.
21·05060 160 N44E 175 7141.92 No olovntod VOCs or rndtooc!lvtty busod on ftofd seroonino.
21 ·05061 '55 S22E I 190 7133.93 No olovutod VOC:; or rndloncttvtty bur.od on flold r.croontno.
21·05062 60 SlOE 82.5 7133.36 No elevated VOCs or rndloucllvity b<tsod on lleld &CroeninQ from 5Urlnce to i1 depth Of 75 ft, 25,000 • 43,000 cpm alohn ond 10,000 • 20.000 cpm beta/gumma I rom 75 • 83 It whoro dlspor.al shll!t oncountorod. Drtlllng tcrmtnntoa Hflor contacttng di~OOSIII ~hall
21·05063 90 NA 110.5 7142.66 No olovnrod VOCs or mdioncrrvt!V oasod on hold r.crrf.lntno.
21·05064 190 NA 50 7141.78 25 • 350 cpm ulphn and 200 • 400 cpm botl\/gammn
I rom 7.5. 15.0 lt. 21·05065 90 NA 50 17132.36 No OIOVIl!Od VOCs or mdiOilCttVtly bll!lOC! on llold
r.cmontnl]. 21-05071 90 NA 1200 7135.81 No olovfttod VOCo or rndionc::tvtty basoa on !I old
scro.-ntnl]. 21·05073 90 NA 70 7134.25 4.Q • 2,570 cpm alph!i and 200 • 600 cpm botnJgammo
nt 5.0 •17.5 ft. 60 • 100 cpm alpha nnd 120 • 140 epm hfltu/qnmmA HI 35 • 50 ft.
21·05074 90 NA 50 7132.29 1 .000 cpm olpho and 165 cpm bola/gamma !rom 0.0 • 2.511. GO cpm alphn nnd 140 cpm botlllgt~mma Rl25 • 27.5 ft.
2~·05075190 NA 170
7135.84 20 • 1 1 5 cpm nlphn und 200 • 300 c:pm l:lnlal~omrnn rrom 7.5 • 22.5 tt, 55· 115 cpm alpha und 120 • 14a com bntnmnmmn from 45 • 50 ft.
1 • Dopth marcnroo 1s tno vortlc.U dopth botow pround surtnec oxcopt ror thO anQIOd hole!~, tn wn•ch the total depth indicated 1:; tho lrnonr drllllnq tootu~o. 2 • Elovnhon rn toot abovo monn sou lovol,
MOA T History and Fl,ld Work P~11
··,~ -
(, .... '" ·'I '·-'
• ... .. ..t..
VI. Summary
1 . Current sito sur1oco is not or1ginnl surl:v:o. !=ill eap (lmplac~c in Into 1 980s. Surlace invn.sti~olions in 1984 and '86 wero concuctco on or~ginaf sun ace. The surtncc 1nvesugat1on conductod in 1993 w.'ls conducted on tno cap.
2. Flndioactivc contammation was dotcctoc beneath boos 1, 2. 3, and 4. Rad1oact1VO con:am1nat10n boneath bod , wos founo to extend to a depth of approximately 100 t:, which concurs With Nyhan's ~ 978 msults. AadiOOCtJvr. contamination bcneotl'l bee 2 extencs to approximately 67 It, out the concentratiOns were hignor than those detected in bod 1 • We th1nk difforoncos between bods 1 and 2 are result of inllllralion experiments in bed 1. Contamination co neath bed~ 3 and 4 to depths of 21 and 12 It, ro~pectively. Elevated rad detecled at n depth of approximately 45 rt beneath bed 3 In a fracture. Rad contnminntion also detected at depth m fracturos 1n othor boreholes.
o. l..ittle to no latoral rarl cont<:~mination outside of absorption t:>cas w1tn oxcoptlon of :rtt1um dot.,ctod in boreholes drillod on oust sido ot dtSI'Osl:ll shafts ono ooronolo anllod into old tronch botw(mn bod 2 and building T A·21 ·35 :ootprint. -
4. Cement in at least one disco~al snatt has not completely curec m 25+ yaors s1nce tM cisposal sMtts were fillad. Very high lov(lls of L!morictum l:lnd plutonium tn eomont.
5. Organics detected in 14 coroholos, but vast ma1orlty o: tho dllt<IIS "J", "B". or "JB" qual1fi~d. Non· oualifled organ1cs wore detoc:oo in 01gnt boroholos us summan:"o tlolow:
• SVOCs at 5 tt, acetone at 5 ft. a no TCE at 5, 1 o. and 20 :: 1n 21 ·05057 (RWSA) • 2·Hexonono at 3ft (common lab contamtnont but not oualilicd as "8"\ and PCE at 9 1: 1n 21 ·05073
(Bed 4) • Toluene at 3.5 It, 7.5 ft. 8.2 ft. and 1, .2 It and TCE at 7.5 M m 21 ·05054 (Bed 2) • Toluonc at t..6. 7.0. and 10.0 It and 4·1sopropyltoluene .:11 7.0 and 10.0 tt 1n 21·05053 (Bed 2) • Toluene ill 6.5, 9.0. and 14.5 It in 21·05051 (Bed 1) • PCE ot 5.5 It 1n 21 ·05062 (AngiP.d hole mat h1t dtsposol shaft) • Toluene nt 6.0 ft tn 21 ·05061 (Anglod hole ocncnth 6'-"C 3 one C1sposol sh:l::~) • Methyleno Chlonc:c at 1 19 and ~ 29.5 t: 1n 21 ·05060 (Angled halo beneath BE.-C: 2 .:.no shotts)
6. Angled bomholoz boMoth disposal sMtts revealoo:
• Am·241 gro.ater than SAL at i'O linonr toot (60.6 vorucalleol) onotrtttum grantor tl'loln SAl. from 118 to 130 linoe.r teet ( 1 02.2 • 1 12.6 vf'!rtlcal It) 1n boroholo 21 ·05060 (beMath oao 2l
• Plutonium groa\P.r thr.ln SAL. at 10.5 linoar ~eet (8.6 vertic.:~! foot) and tritium grentor thon SAl. at 180.5 linear foot (,48 vert1cal feet) in borehole 21·050131 lt:>enea:h bed 3)
• No rad greater than SAL in borenolc 21 ·05062 (until we rut tho disposal shalt).
VII. QUESTIONS
, • Woro obj"lctiVI'!S mot for each coroholo? II not. why? Do wo neOd to drtll moro boroholos. If so. whero?
2. Cobble lt~yor wttnin absorotion bed was not sampled. Radioactivity wilhtn cobble layC!r 1s lik~?ly very high. Is this a c::oncorn? Do we need to samplo :M cobble Ioyer 1n each bed?
3. What IS tho eHeet ol froc!uro flow at sito? What 1s tho amount of contominant absorption Into the tutl?
MIJA T HJ•tory tJnd Field Work Ptlfll'12
1'·,
' L~· .l..i
i.;.
r· ~.,' .. .... . -I. ·'
.. . .
4. Organics woro detected m ,4 bor~holes. VJst matonty werP. "J", "8", and/or"JB" aual1ficd and shallow, i.o., w1th1n or 1mmC!d1atoty bonoatl'l aosor;::~tion bods. Occ<~slonat dat~ts nt dopth. Oo wo h.:~vc a larger organics "plumo"'? Do wP. need to do moro orgon1c s<~mpling or SOli gos survoy? NMED likely to Question sample colloct1on tor orgon1cs oecause of t1mo it took to collect samples. All core wns screenod for rud10Jctiv1ty before samples collected.
5. Do wo need moro geologlc/hydroqoologtc charac:enzm,on of pJieocMnnotmcludlng extent to the oast and west uno width? Do wo need to charoctcrtzo tM palaocn~,nncl west of Bldg 228 nnd through TA·21 to evaluate liQuid and contaminant flow threw paleochannel from ott'lor sources? Do we need to chamctonzo the potoocMnnel east of MDA T. botweon MDA T and MDA A, and oost of MDA A? Does the paleochonnol also cross through or oeneatn MDA A and/or MDA U?
6. Whoro did mo1::;turo 1n trench oncountercd by Borehole 2, ·05074 come from and whOm 1s it going? Is it a concom to MDA T invostigouon and ulttmutc romed•al act1on? How mny it be acorossOd?
VIII. REFERENCES
LANL (Los Alamos Na!ional Laboratory), Novomber 1990. ·soltd Wasto Mnnngomant Units Roport," Volumes I through IV. Los Alnmo:; National L<lboratory l=leport No. LA·UR-90·3400, prepared by International Technology Coroom110n uncer Contruc: 9·XS8·0062A·1. Los Alamos. New Mcx1co. (LANL 1990, 0145)
LANl. (Los Alamos Nu:,onal LClCOmtory), May 1991. "T A-21 Opmnblc Unit RFI Worl< Ptan for Enwonmcntal Restorouon."' Volumes 1·111, Los Alamos NaiiOnlll Laboratory AC!POrt LA·UR·9~ ·962, Los Alamos, Now Mox1c0. (LANL 1991, 0689)
Nyhan, J. W .. and B. J. Drennon. Seotomocr 1993. "Data Annlys1s ot the 1984 and 1986 Soil Sampling Progroms at Mntonals Disposal Area Tin tho Los Alamos Nnt1onn1 Laboratory." Los Alamos National Laborotory Report, Los Alamo~. New Mex1co. (Nyhan and Drennon 1 993, 23248)
Rogers. M. A .. Juno 1977. "History nnd Enwonm~ntal Sortmg ot LASL Nt:>or·Sunnce La no Disposal Fnc1htlos lor Radioacu•Jo Wnstes (Aror.ts A, B. C. D. E. F. G, and T)," Los AlnmO$ Sc1ent1fic L.lborntory Report LA·6848·MS. Vols. I ano 11. Los Alamos. New Mexico. (Rogers 1977. 0216}
MOA T History tmd Field Work Pltflt' 13
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sn -------------- 607
Unil13 (non- lo weaUt-weldro;
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; - . . ~~~:-:--- --~._---- IF.. .~s.cq.-ton&.!d 12.: .••• . ·, • . ' w-Unill3
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modOIDIOIV• welded)
-...- ..... - .. 60'? 50'TO --- .......... _ .... __ ............ _ 627 50'1'0 ----?
?--- .. . -.... rTO' ro
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sugary)
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(no YIII'IICII•QOQif'IIIIOtl)
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Totnl Boraholo Oopth
FIMAO 10 It Elov. {ft} {ft}
21-05051 7141 150
21-05052 7142 150
21 ·05053 7141 90
21·05054 7140(?) 60
21-05055 7134 15
21-05056 7134 50
21-05057 7138 50
21-05058 7137 50
21-05059 7137 so
21-05060 7142 175
21-05061 7134 190
21-05062 7133 82.5
21·05063 7143 , 10.5
21-05064 71L12 50
21-05065 7132 50
21 ·05071 7136 200
21 ·05073 7134 70
21-05074 7132 50 I 21-05075 7136 70
Total 1713
TA-21, MOAT Borehole Stratigraphic Summary
Angle {dcgroos Bnckflll/ Absorption
1rom vortleal) Ovorburden Bod #1
vnrt. 0-6 It 6-12 ft
#'1
vert. 0·6 1t 6·1 0 ft _(?)
#2 vert. 0·5 ft 5·12 ft
#2 v(:lrt. 0·6 ft 6·1 1 ft
#4
wm. 0·1 ft 7·13 tt #4
vert. 0·4 tt 4·1 0 ft
vert. 0·3 ft n/a
v~rt. 0·2 ft l n/a
vert. 0·8 It n/a
30 0·7 It nln
35 0-10 It n/a
30 0·6 tt n/a
vert. 0-8 ft n/a
vert. 0-4 ft n/a
vert 0-9 tt n/a
vert. 0·8 ft n/a #4
v~rt. 0-5 ft 5·1 2 ft
vort. 0·5 ft n/n
I #3 VPrt. 0-5 ft 5-14 f?lft
Pale~
RWSA chaMol
n/a n/a
nla 1 0·27 tt
n/a n/n
n/::t n/l'\
n/n "'" n/a n/a
3·21 ft 21-24 11
2·18 tt n/a
n/a 8-36 ft
n/ ;I n/a
n/a n/a
n/n n/a
n/a n/a
n/a n/a
n/a n/a
n/a 8-34 f1
n/a n/a
n/:"1 n/:1
n/A n/a
Pago 1 2116/98
'. -(:, "i·
"' ·~·~ (.,
.. " .. .... r .J
t" •• • -· ... ,.;..
Boroholl.' OlspoS&ll FIMAO 10 # Shotts
21-05051 n/n
21·05052 l n/a
21·05053 n/<i
21-05054 n/a
21-05055 n/n
21·05056 n/a I 21-05057 n/o
21-05058 n/n
21 -OS059 nt::~
East End of 21-05060 Shntt FiPid
West End of Shalt
21-05061 FiPid
Center ot 21 ·05062 Shan Field
21-05063 n/<~
21 ·05064 n/a
21 ·05065 n/a
21 ·05071 n/a
21-05073 n/a
21-05074 n/a
21·05075 n/n
TA-21, MDA T Borehole Stratigraphic Summary
Unit 3 Unit 3 (woldod) (nonwoldod) Unit 2 Unit 1 v
111-150 ft 12·60 It 60-, 1, tt (TO) n/a
105-150 tt 27-57 It 57-105 fl lTD\ n/a
12-60 ft 60-GO ft fiD\ n/n nln , 1·60 1t
(TDl n/a n/a n/a
1 3· 1 5 It I fTOI n/n n/~ n/n 1 0·50 It
fTD\ n/n n/r~ n/n
24·50 It I ITO\ n/a n/n n/t-~
18·50 It ITO\ n/a n/a r,/n
36·50 ft CTO\ n/:t n/:l n/a
145-175 It 7-85 ft 85·145 It ITO\ n/t~
120·1 90 1t , 0-70 ft 70-120 It CTOl n/a
10-79 It (79· 82.5 grout)
tTDl n/a n/a n/n
100·1 10.5 8-65 It 65·100 1t tt lTD\ n/n 14·50 ft
ITO\ n/a n/a n/a
9·50 tt ITO' n/<'1 n/a nl:i
105. 190 (?)-200 34-70 ft 70-105 tt 1 !iO tt f?) h fTC)
12-62 ft 62-i'O tt lTD\ l n/a n/n
5-50 It (TO) n/a n/n n/a
14·70 ('?) It CTDl n/a n/a n/a
Page 2 2/16198
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TA-21, MOA-T I'RS Group 21..016 Bcrehole Summary
FWdScrMI'Jng c:f fhcol'w.t Cofe
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TA-21 Scrtvlno Ruc.lta
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TA·2i, MDA·T fRS Group 21.016 Bortholt Summary
Fhn lrW!ll'llldon
~:rP· Wotm~lion
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0121-96{)496 12/11196 395 400 4JB lOB
0121·96-<»97 12/11196 49.5 500 12JB 128
0121·96·0621 12113.'96 a tl oiBcd 3 65 4.5 5.0 8JB 78
0121-96-()622 12113.'96 100 105 7JB 98 0121-96-0623 12116.'96 19 5 200 JJB 100
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0121-95{)481 12116.'96 b HWSi\ 57 4.3 50 30 7.5
0121-96{)462 12118.'96 95 100 10 ~-- -
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'---0121·960485 12/19'96 295 :))0 -0121·96-{).$86 121'19.'96 3'3 5 400
0121-96{)487 12119.'96 49.5 500
01i'l·97-oo8t 1f7/97 a Bed4 55 3.5 40 11JB 258 --0121·97-()()82 1f7/97 I--
85 9.0 5.JB 278 -- i--0121-97-()()83 tf1i91 12.0 12.5 13JB 158
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0121·97-0100 1115.'97
0121·97-0101 1i15.'97
0121·97-00€-6 1117197 a 0121·97-{)()67 1117197
0121-97..0C68 1117197
0121·97..()069 1117191 0121·97-0421 t/17197
0121·97.()()70 1117197
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0121·97-0072 1117197 -0121·97-0073 1120.'97
0121·97·0074 1/20.'97 - -- - ~-
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MATERIAL DISPOSAL AREA T VOLATJLE ORGAtUC COMPOUND RESULTS
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1-290 295 am 238 39.0 39.5 S..JB 2C8 - 1-495 50.0 SJB 128
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MATERIAL DISPOSAL AREA T VOLATILE ORGANIC COMPOUND RESULTS
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0121-97-0011
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0121-97-0013
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0121-97-0015
0121-97-0016
0121-97-0017 0121-91-()018
0121-97-0019
0121-97-0111
0121·97-0il2
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0121-97-0116
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0121·97.0184 3.6.'97
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0121-97-0331 0121-97-0JJ2 0121-97-0333
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MATERIAL DISPOSAL AREA T SEMIVOLA TILE ORGANIC COMPOUND RESUlTS
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------
Sa~e Uunober 0121-97--&COl 0121-97-0334
0121-97-0095 0121·91-0097 0121-97-()()96 0121-97-()099 0121·97-0100 0121-97-0101
0121-97-()()66 0121-97-0067 0121·97-()068 0121·97-0069 (1121-97-0421 0121-97-0070 0121·97-0011 0121-97-0072 0121-97-{)073 0121-97-oD74 0121·91-()075
0121-97-{)()51 0121·97-<)052 0121-97-()064 0121-97-()()53 0121-97-0054 0121-97-0055 0121-97-()056 0121·97-0057 0121-97--0059 0121-97-()059 0121-97·0060
~ .. - ... - -·· . ---- - -- -- --
. tD 9 N
0 Sal'l'Jf.e z Col'ect:OO (J)
a: oa:e 0.. , ,'9 '97 ---- -1r'9.'97
1f1397 a 1115.97 fl15.'97 1115.'97 1115.'97 1-1115.'97
1117/97 a 1117t97
f--· ~~~ ---
1117/97 --111],~1
1117197 1117.97 1117197 1120-97 --11'20 97 -1120-97
_112!~ a 1/211'91 1121•'97 11211'37 lr21l97 1121:97 1.121197 1.121/97 112297 -ltn-'97 -1122.'97
-
~ s;; q .... C\1 ~
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0 < ::E
Unit [i:
Bed4 55
r--
Bed2 5t
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Be-1 2 53
PMTERIALDISPOSALAREAT SEMIVOlA TILE ORGANIC COMPOUtlD RESULTS
San-opied _ I I ' I I I ' 1 1 Interval SVOCs (uq'k 1l
0 Q
Ci 0 r; " 0 Gl c g 0 c c .. C> = g 0 0 E c Ci CD c; u a E r.:i c-i c 0 e 0
~ e - E 8 5 0 = c ..; 0 2 c E C> Q c Cl :::0 u 0 C> c
~ 0 Cl N .c:. =
i: c a. 0 ~ - >. ~ ~ c -a 0 n 0 c .c:.
u c u :;J c Cl - c w -0 c; e !D r.l .0
0 Q 5: 0 .., t: c 0 ~ c .., « N
5 !! ~ c ~ :;J ~ 'in c F"rom (ft! -'~ (fl}
C> c :;J _L .c Cl
~ _JL ~ _Q_ _iL JQ.. ....2!..... __Q_ n -EL 618 625 695 700 45 5.0 39J -- - - ·- - -- -- - r-- --118 12 2 -- - - -- - -- -- !--· - --200 205 52-!_ 290 295
f-- ~
3)0 395 495 50.0
~-
30 JS 47J 65J 6-U ?7J I~ -- f-- - - --50 7.5 91J 7.5 82
r--67J _1_50J
105 112 4JJ r-~L 112
.--!1L 150
_B._L 22.1 !?OJ 320 325 -- - - --- ---- - -- -- -- -- --355 :;so r--500 505 59.5 roo 42 46 ·~OJ 62J HJ 47J ~~ 46J 51J - -
120J -
6.5 7.0 J~J 58J 92J 91J ~ S8J e:u 65 7.0 180J 97J 72J 62J 82J .m. 72J
"ToO - 4sJ _9.:L_ ISO.J -43J IE!_ 59J ~~ - - - ---125 130 11.0 t7.3 r-- 1- - -- -20.5 215 --- - -- -- - --1--280 290 -- - -- --- -- - -- -- - 1-- --395 400 f--480 485
f- -595 600
0 c C) c E e 0 :::0 = ~ -Q N
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39J 81J 60..1
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0 c !!! >-Q
Cl c
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:;:.. 0. ~ -;g .--- 0 0
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Cl c <:1 E c; E g :I
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Pap2 2118198
'! ~ 'r·, • -~~ r .(. ; r- _-, . . .: :--:- i ·,
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Sa:np'e truTh 0121-97-0061 0121-97-0062 ()121-97-0063 Gl2t-97-0445 0121-97-(f.)()t 0121-97-0002 0121-97-()QOJ 0121-97..(.'1(104 0121-97..()005 0121-97·0006 0121-97-0007 0121-97-0000 0121-97-(l009 0121-97-0010 0121-97-00tl 0121-97-0012 0121-97-0013 0121-97-0014 0121-97.()(115 OJ21·97-0016 0121-97.()(111 0121-97.0018 0121-97.0019 0121·97.0111 Ol21-97.0112 0121-97.0113 0121-97.0114 0121-97-tll 15 0121-97-0116 0121-97-0117
--- . - --·- .
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Sa7>p'e core.:too
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1122r'97 112397 112397 1123;97 1f27/97
--
ti2S97
1129.97
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113097
2.i3'97
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--- ---
i ~ 0 . & 0 .
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~ 2 0 g N 0 ...J
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a Bed1 51
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c &-.a'U 59
-
MATERIAL DISPOSAL AREA T
SEMIVOLATllE ORGANIC COMPOUND RESULTS
.-~~- I I T I I I lriaval SVOCs (UQ\ I)
0 Cl
0 ~ 0 r; ci 0
c .c. c: 0 0 ;; 0 0 .E 0 s 0 'i'i 8
u 0 C'4 e 0
r:l c 0 ~ e .c. ~ .E 0 r. u c E C) n 0 c ~- 0 u "' lEI c 0 N c n 0 ~ <:1 -< i: c
~ r. £! iii CJ >-u c 1:1 E c c .c. 0
u :::0 Q 0 - 0 w <:1 E <D e .D 0 N c ~
.. N c 0 5 ~ 0 ~ j ~ ::J -.;
Fromlft) To lit) 0 c. c :::J __L .c ~ Q. " 6 u: ~ _Q__ .0
600 670 t- --- -- - -
740 750 - -- --1-61JO eos -- -- - --- --- - -- -- - -895 900 3.4 4.0 -- -· - -- - -- -- - -60 65 53J -85 9_(!_ 46J r-- f.--11.5 118 63J - -138 14 5 -- - - -- - -- -- - -200 21.0 . ...!l.L ,_ 1"-27.5 280 -- -- -· - --- -- - -- -- - -4()0 405 43J -- - - -- - -- -- - 14J _20_.!_ ~~ 610 61 5 '!@ 71 0 7&5 '--roo 805 -- - ---- -- - --1-- - -815 00.0 ·-- - - -- -- - -- -- - ,._ 995 1000 -- - - --- -- - -- -- -- ;--1090 109 5 - - --- -- - -- -- - -'195 1~o -- - - --- -- - -- -
__!!li_ 1300 --1-1- --- -- - --- -· 137.5 1380 H85 150.0
1- 1--·
40 45 -- - - ------ -- - -- --102 101 -- - -- --- -- - ----· - -200 205 -- - - --- -- -- -- -- - c--315 320 -- - - -- -36.4 ~8 37J ,_ - -- -- --400 -lOS
4H 50~_ ;--·
- -
I I
c: Cl c: c: 0 Cl r. r. E E ::! e 0 0 ::J :::0 ;:: ;::
n s;-- -0 0 .., ! i
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-- ----:-
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I I
Cl c e >-
II a. ii' c
!' X >. n C'{ Ci .... - 0 () c ~ Cl 0 ~ :_J;Q_
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- -
t-
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-- -- 1-
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- -- -- -- -
0 c Ill r: c; E 2 0 2 6 2 0 :.c ''.1 a
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----
----
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e c: e ~ & c. 0 0 N c
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Pa)'J J 2118/98
r·:'r ~ c-J.•;,.-:-·r.~., .. t:~:-:-·, ·
""' r._,
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. co 9 .... N
I I i ~ q fi
11
MATERIAL DiSPOSAL AREA T SEMIVOLA lllE ORO.AtlJC COMPOUND RESULTS
OJ
8 Cl ci 0
~ a c 0 0 0
<:1 <0 iii u d ~ iii c: e
Cl c: - .E 0 c E I) ?:
5 0 g c c Q c .... ~ ~ = c ~ -
g 0
~ 0 c c
Cl .E 0
§ c: c:.
Q c c ~ E e ..; 0 0 0
£! €_ :J ~ = -
Cl
l c c
~ !! li: c-.{ ~ r-
0 c 1:) 0 5
c ~ 5 c: E e g 'E 0 e 0 "J:: .Y 0
~ Cl
~ & £ 0 0 N c Cl
Cl
Pa1-3 c 2118/98
; -··' _;-, • ~-~} ' ::-:· J; ~-:-- • , r:c--, f -
----. - --- ---· - --
li 0 \1)
9 £! . 0 -'iE c
~ 0 9 E ("~ 8
San;p!e 0 J
z 0 Col!ecti<:ofl (I) <(
::::!: Sarrop!e tl-J..,-.«r Da!e ((
Q_ Unit u:: 0121-9HJI3l -0121-97-0UO -0121-97-0141 -0121-97-0142 2119.'97 -0121-97-0143 ------- -0121·97-0!63 -- -0121-97-014~
0121-97-0145 0121-97-0145 --0121-97-0147 2/20.97 -- --0121-97-014!3 0121-97-0165 0121-97-0149 - -0121-97-016-C - - -0121-97-0150 - -0121-97·0151 -0121-97-0162
. ----· -- --0121-97-0152 - -0121-97-0153 0121-97-QI54
Bed3and 0121·97-0IE-6 2126.'97 a'c St.aft FJeld 61 0121-97-0if7 0121-97-0isa ------ -0121-97-1126 -0121-97-0169 '2121t'91
0121-97-0110 0121-97-0171
f-
0121-91-1129 0121-97-0172
t-, ·..:::
MATERIAL DISPOSAL AREA T SEMIVOLAnLE ORGANIC COMPOUND RESULTS
~p'~-- I I I I I I I I &r.tervat SVOCs (UQ\. l
0 0
0 ri 0 a 0::
ci Cl Cl s:: c 0 <ii
c E 0 0 8 Cl 0 .c = <D <= u n E ci E 0 i':i s:: 0
~ E ~ E 6 c 0 c .c .; 0 "0 c E Cl n 0 E CD :::1 c ("~ u ~ e 0. 0 ~ 0 c: - c ;:: <( .c c:
~ .c ci Iii' c >- n u c Cl E c c s::: u :J Cl ~ w -0 IV e 111 ca n C> 0 C> 0 c ..,
•I c .c ~ 0 ~ C> N ~ c\1 N c c c c
Q .c E :J :;:) __ ?: -~ .c 0;;
~ from (It} Jo(lt) _Q_ ~ __:!___ 6 u: ..!!!. _Q_ .i5 --300 305 -- -- - - -- --- -- --- -- - - ---- -- - -- - -- -- - --
500 505 71J -- -- -- -- - -- - - ~ --600 ro5 --~- - f- -- -- -- -- -- --695 700 -- - - ---- -- - --- -- - - --
695 700 -- -·- -- -- -- - - --795 soo 79J -- -- - -- -- -- - -- -- - --890 63.5 -- -- - --- -- - -- -- - - --99.5 1000 -- --- - -- -- - -- -- --- - --109.0 109 5 -- - - -- -- - -- -- - - --1185 1190 --- -- - - -- -- -· --- -- - - --FB -- - - --- -- --- --- -- - - --1290 129 5 -- - - --- --- - -- -- - - --1290 129 5 -- -- - --- -- - -- -- -· -- --13'3.0 1395 -- - -· --- --- -- -- -- - - -150.0 ISIJ 5 --- - - -- -- -- -- --- --fB 3J IJD SJ -- - -- -- --- ---- - -- ----- - ----
_!?QO 162 5 ___ , 161.5 1125 -· ---17~.5 1150
5.5 60 -- - - ---- -- - ---· - _; --10.0 105 -- -- - -- -- - -- -- - - --20 21 - - - -- -- - ·- - --20 _B_ - - - -- --- - --· -- - -- --~ 305 -- - - -- --- - -- -- - -- --40 405 --- 1- f--· 48 48.5
!-fB IJB 9JB
59.5 60 r--
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0:: c Cl
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0 c Cl >. Q
Cl c u 0 X >. n c-! 0 r--0 0 N c ~
Cl 0
m E
- -- --·- --- -- -- --- -- --- -- :-- -- --- -- -- -- -- -
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0 c Cl s:: c; E e 0 :::1
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N H _. Sa'l-,p~e
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3110.97 a Bed3
b.
MATERIAL DISPOSAL AREA T SEMIVOLATllE ORGAtltC COMPOUND RESUlTS
0 0 ~ 0 a C> c
0 0 = § 0 Q UJ ;: u
f\i e ·a c - E 0 c 0 .0:: c u c E C> .Q. 0 u 0 CJ 0. c::
~ 0 <:l
<( c c > Cl cj Cl .0:: c r; y c u s E 1:> ~
0 IQ i! CD ~ 0 ll
0 N c
~ c
N c c:: IC ?" a c: c:: 0 .r: c ::::J ::::J l- C> From {h) To llll CD Q. <( 0 u: m m
= Ci c 0 r:: c E 0 C>
§ .r: c .c ~ E E ~ e e
~ 0 0 c ::::J ::::J - ~ ;:: ;:: > n C> E ;; c - -0 w 0 0 "' c;, N ... ~ c c .c -.e c:: c (} ii m m
0 c:: 0 >. 0.
C)
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0 c:: c:l c c E e 0
~ 6 e 0 i: .Y 0
e c S! ~ 8. -.c ci 0 N c:: 0 m
Pa.}a 6 "2118198
~ fl~ .. r-, • ;.:-.; • ("')~" ~-:-- .. -:=r 1-.~·
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MATERIAL DISPOSAL AREA T SEMIVOLATllE ORGANIC COMPOUND RESULTS
ctl c C> E c e g = J I
0 I c !! ,.., a
CJ c: ~ >. n
Pa)97 2118198
0'lh • C·P·O!)lr;. • ·.tC .... I...:'
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i5 9 .... c-.1
~ 0 on '9 .... £:!. Q
MATERIAL DISPOSAl AREA T SEMIVOLA TILE ORGAllJC COMPOUND RESULTS
. §-~'!"Jlfe<J Inlet\· a!
0 0 0 ci 0 <D c-4 -0 c Cl c c 0 :l
u:
0 § i! E 0
~ c:
" £1 >-"5 (!}
1:: c 6 Q
u 0 e 0
8 6 r::
0 <":
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c >. CD Q_ m
0 0 0 .; N -Cl c Cl
"' ~ c u
;;; a <:' c c c c:
Cl Cl E r. c:. 0. c E ~ e e
0 0 o:t :> ~ c. = > e :£ s:. iii C'V
0 0 ., N c c "iii' C) Cl
i5 !D m
c c ~ ~
~
~ c E >-n ~ ~ ....
0 0 c N CD c
Cl 0 m £
0 c c:l c 0 E e 0 :> ;: 6 e 0 :c u 0
0 c Cl
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s= ci 0 N c ~
-~
Pa'J'! 8 2/t 8/98
·-.f)-.· ::-:J -.r;:_:;:,r..-:-· • __ ;:.:··-r-:
\·~
BH 21-05051 Am-241 Values
0 ----
~£42.5 • 952.7 ·~-2-H~S
20 -+3617 -t"09z
40 {~.58 57.31
60 7L67 ... 0
~ ~27.06
:;; 80 ~ 20.32 ... g. 46.1 0
100 . 26.83
4.89
120 l 0
0
140 t 1.09
0 500 I
160
1000 1500 2000 2500 3000 3500 ~4)0
Am·241 Values in Cilg
1..1.1~P • Cp .:1":..i!("' ~ .r.rr-J.:
(., ... I
BH 21-05053 Am-241 Values
0 -
10 ~~~-·~~~~=9============·==6=6=3=8======~========~========~--~68~1198
20
30
.... 0
/ 602.6
1740
.e 40 .:.o c .c -g. 50 1615 0
83.25
150
80
2000 90!
4000 6000 8000 10000 12000 14000 -
Am-241 values in Ci/g
t 1476(
16000
~1~i1 .. (:""1f ..a. ~l._li~~ ~ -+-~; .. ;.
·;:-.. •"\
0
BH 21-05054 Am-241 Values
1 0 k Y-.JOtH1 1495
20
... g ..... c -- 30 .c -a. 0
0
40
2000
3787
4000 6000 8000 10000 12000 14000 16000 6 0 ! 0:--1-1---__._. _...______.___,_-f---'--'----'---"---"------------'--------+-----'----;-~-~
Am-241 values in pCilg
QC?'- • (.If • C"•lfiV' 4 ·-~'~!v
... '
BH 21-05051 Pu-239/240 Values
20
--------, -----·-----------0 ---
~'1,~ ~91 •7147
-13110
60
40 I ...... 463.9
377.4
... 60 ~87.42 0 0 t 49.23 ..... c .r 80 28.86 -g- 1·19.57 0
100 59.56
1.17
120!0.73
0.17
140~0.58 s 0.1 2000 4000 6000 8000 10000 12000 14000
160
Pu-239/240 In pCI/g
,_ L ::;;-· • c, t-= ,~ .. ~n:?· • .. ~ ~:'"· r-.:·
~
i·
BH 21-05053 Pu-239/240 Values
0 r- ----------
~872
10 '+·15-49 282200
20
30
~
0 !! 40 c c. ~
g. 50 0
-252:6
14..1
30
8.6
0.79
11570
60 • 1292
2871 70
80
go lo:-75 50000 100000
--------------- 3oopoo 150000 200000 250000
Pu-239/240 in pCI/g
;,-.[7· • Gi·' '-~r_t!~ • -f:~-J ~
\~
\.tJ
0
10
20
.... g -
BH 21-05054 Pu-239/240
+Hl-3 • 960zn __
--------------------------------------------~============~~161900
4134
E 30 i-+-Se_r_ie~l! .c • 1.05
~
a.. 0 0 ro.7
40
so •s.9
20000 40000 60000 100000 60 • 0:-27 ' 180'000
80000 120000 140000 160000
Pu-239/240 In pCilg
t.•-..: ... 7· • c.::-1--' c;~n~~ • -~ c:--- r·.)