CNT 4603: System Administration Fall 2013 Introduction To Policy Management – Part 1
Se% 'Mt-ek' Distr bution 0. · 101. 1/RJW/84/07/09/0 - 2 - If there are any questions about this...
Transcript of Se% 'Mt-ek' Distr bution 0. · 101. 1/RJW/84/07/09/0 - 2 - If there are any questions about this...
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Se% 'Mt-ek' or
C11RJW/84/07/O9/O
Mr. 0. L. Olson A 1 4U. S. Department of EnergyRichland Operations OfficeBWIP Project OfficeP. O. Box 550Richland, Washington, 99352
Distr bution _0.gQ--W$Lt.94s1 WRehfeldtWMRP r/f RJWright & r/iNMSS r/f JitPDRCFREBrowningMJBellPAl toniare'LBHigginbothamMRKnappHJMillerLBarrettRRBoyleSMCopl anJLinehan
KennedyJStarmerFRCookDBrooks
Dear Mr. Olson:
I am writing with respect to open item number 1 in the summary meeting notes ofthe January 9-12, 1984 workshop on geochemistry:
"1. NRC will study Attachment 4 and will request, by letter to DOE, anyback-up material, reference citations or other items needed for anunderstanding of Attachment 4 material."
Attachment 4 to the summary meeting notes comprises the vewgraphs presented atthe meeting. Areview of these indicates that a large number do not providebackground information on the origin of the data and references where the datacan be examined. Our geochemical reviewers need this information to completetheir review.
Accompanying this letter is a group of viewgraphs from Attachment 4. For eachof these we request the following information:
1. SOURCE: Name of DOE organization that did the work, or citation towork published by other investigators. Designate whether or notdata collection is complete or is continuing.
2. REFERENCES: Released reports (title and reference number), or forreports in progress (expected title, reference number and releasedate) that present or discuss the data.
Would you please advise me when this information will be made available.
WM Ree g WM Project /6Docket No.
PDR -LPDR AZ•
Distribution:
l-8408010123 840713PDR WASTEWMl-lo PD (Return to WM1 623-SS)I
OFC :W t W P:::::
NAME :RJWright"' :H'1), :_____ . ____- ___-._-4 ___.: --------____---- _____---- . _________-._________ _________.-_______
.~ ~ ~ LI . .
DATE :7/15/84 :7AJ/14.
26 9
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101. 1/RJW/84/07/09/0- 2 -
If there are any questions about this letter, please contact David Brooks (FTS427-4603).
Sincerely,
Robert J. WrightSenior Technical AdvisorRepository Projects BranchDivision of Waste Management
Enclosure:Selected Viewgraphs from Attachment 4
OFC :WMRP :WMRP :…____ … ------------ …------------ ____________ ____________ ____________ ___________
NAME :RJWright :HJMiller : :…____ … ------------ …------------ ____________ ____________ ____________ ___________
DATE :7/ /84 :7/ /84 : :
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Qi. bum@ 731*
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PREDICTED VARIATIONOF GEOCHEMICAL PARAMETERS WITH TIME
300 PATEMERRE (C)
200 - \
10
LITHIOSTATIC
HYDROSTATIC
ATMOSPHIERIC
AIR
FERROUS IRONIN MESOSTASIS
9.0
PRESSURE. .I
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0 v
7.0I I L l. . .
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100 101 .10;2 103
TIME (yr) K6311-3.40WP8ri 1-40
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MAJOR PROCESSESAFFECTING CONTAINMENT OF
NUCLEAR WASTE
° SATURATIONENGINEERED ° CORROSIONBARRIER * PACKING MATERIALS -SYSTEM WATER-AIR REACTION
* GAMMA RADIOLYSIS
DISTURBED o BASALT-WATER-AIRROCK ZONE REACTION° GAMMA RADIOLYSIS
SITE NA
I
WP8401-148
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PLANS FOR RESOLUTION OF U.S. NUCLEARREGULATORY COMMISSION GEOCHEMISTRY CONCERNS
DRILLINGRESOLUTION EMPLACEMENT ENVIRONMENT BARRIER MATERIALS ANDCIARACTERIZATION TESTING TESTING
RADIONUCLIDE WASTE/ISSUE WATERl STEADY STATE BARRIER/
ROCK CONC. SORPTION ROCKROCK GROUNDWATER REACTIONS T P TESTING TESTING REACTIONS FIELD TESTS
Eli CONDITIONS X X X X X
Eh BUFFERING x x x xCAPACITY
RADIONUCLIDE - _ . _ __
STEADY STATE X XCONCENTRATION XVERIFICATION _
RADIONUCLIDESORPTION X X X X X BEHIAVIOR
COLLIODFORMATION AND X X x x x xTRANSPORT
FRACTURE FILLING x x xSTABILITY
RADIATION XEFFECTS X X
LQNG-TERMBEtlAVIOR X X X X
WP8308-1t75
04
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IDENTIFICATION OF KEY RADIONUCLIDES
* INITIAL INVENTORYb
* HALF LIFE >20 YEARS
* INVENTORY GREATER THAN 0.1% OF EPA LIMIT
* PRELIMINARY CONTAMINANT TRANSPORT ANALYSIS
* CONSERVATIVE HYDROLOGIC PROPERTIES° CONSERVATIVE SORPTION VALVESo CONSERVATIVE SOLUBILITY VALUES
WPO401-92
* e ~~~~~~~~~~~~~~~~~~~~~~~~~~
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PRELIMINARY LIST OF KCEY RADIONUCLIDES FOR A NWRB(100 YEAR OLD CLW OR SPENT FUEL)
RADIONUCLIDEELEMENT (PRIORITY 1)
CARBON ( 1 4 C)*
IODINE (1291)4:
SELENIUM 7 9 o8
SECtlNETIUM 0 9 TC
NEPTUNIUM 2 3 7 NP
PLUTONIUM 230PU, 24 2 Pu
TIN 1268a
*( )=SPENT FUEL ONLY
RADIONUCLIDEELEMENT (PRIORITY 2)
STRONTIUM (90Sr)*
CESIUM ( 1 3 5 CS 137Cs)*
RADIUM ( 2 2 6 Ra)k
CURIUM 2 4 3 Cm.245Cm.2460m
PROTACTINIUM 2 3 1 Pa
NICICEL 5 9NI,6 3 NI
URANIUM 2 3 3U 2 3 4 U.235u
LEAD 2 1 0 Pb
ZIRCONIUM 8 3 Zr
PALLADIUM 10 7 Pd
THORIUM 2 2 9Th 23OTh,23 2 Th
PLUTONIUM 2 36PU. 2 4 0Pu 24 1Pu
II
IIiI
f
I
iII
AMERICIUM
*4( )EXISTING DATA UFFICI
wpea
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PRELIMINARY LIST OF KEY RADIONUCLIDES FOR A NWRRCONTINUED
PRIORITY I=ADIONUCLIDES WITH SOLUBILITY OR SORPTION
CHARACTERISTICS THAT MUST BE WELL UNDERSTOOD
TO ASSURE ISOLATION PERFORMANCE
PRIORITY 2=RADIONUCLIDES WITH SOLUBILITY OR SORPTION
CHARACTERISTICS THAT REQUIRE CONFIRMATORY
DATA TO DETERMINE THEIR IMPACT ON ISOLATION
PERFORMANCE
wPUaO2-102
4f
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FAR FIELD GEOCHEMICAL MODELDEVELOPMENT
* MODEL SCOPE
* DATA REQUIREMENTS
° CODES UNDER CONSIDERATION
WP8401-108
;
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FAR FIELD GEOCHEMICAL MODEL SCOPE
* PROVIDE AN ASSESSMENT OF GROUNDWATERCOMPOSITION/EVOLUTION AS A FUNCTION OF TIMEAND SPACE TO SUPPORT 1-IYDROLOGIC FLOWMODELING/ISOLATION PERFORMANCE. ASSESSMENTEFFORTS
* PROVIDE A QUANTITATIVE ASSESSMENT OFRADIONUCLIDE RETARDATION (SORPTION) BEHAVIORIN BASALT FLOW TOPS AND/OR INTERBEDS AS AFUNCTION OF TIME
* BOTH MODELS MUST BE CAPABLE OF PROBABILISTICAND DETERMINISTIC ANALYSIS
PARAMETER SENSITIVITY ANALYSIS
INPUT DATA UNCERTAINTIES
WPU401-109
. . , E~~~~~~~~~~~~~~~~~~~~~S
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DATA REQUIREMENTS
* GROUNDWATER COMPOSITION
- LATERAL AND VERTICAL VARIABILITY- ISOTOPIC ANALYSIS- GAS ANALYSIS
* ASSOCIATED BASALT FRACTURE FILLING, FLOWTOPAND INTERBED MINERALOGY, PARTICULARLYSECONDARY MINERALS CHARACTERIZATION
* TEMPERATURE, PRESSURE
* RADIONUCLIDE SORPTION EQUATIONS INCLUDINGSPECIATION/COMPLEXATION EFFECTS
a REDOX POTENTIAL (Eli)
* WATER-BASALT INTERACTIONS
WP0410-110
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CODES UNDER CONSIDERATION
MINTEQ
EQ3/EQG GROUNDWATER COMPOSITION-CHEMICAL EVOLUTION
MINEOL
Pl-REEQE
ACTIVITY l(D's
ISOTHERMS
SURFACE COMPLEXATIONMODEL
EMPIRICAL ADSORPTIONEQUATIONS/MODELS
WPB401-111
A S 4. .
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WASTE PACKAGE PEnlFORIMANCEMODEL SCOPE
TIE MODEL PROVIDES:
* A MODEL OF THE PHYSICAL-CHEMICAL (ENVIRONMENTAL)CONDITIONS AS A FUNCTION OF TIME
* A MODEL OF THE ENGINEERED BARRIERS SYSTEM- WASTE PACKAGE AND ITS COMPONENTS- REPOSITORY SEAL SYSTEM AND ITS COMPONENTS
* A MODEL OF THE ENGINEERED BARRIERS SYSTEMDEGRADATION AND FAILURE MODES AS A FUNCTION OF TIME
o A MODEL OF RADIONUCLIDE RELEASE AND TRANSPORTTHROUGH THE WASTE PACKAGE
WP8401-101
. I
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APPROACH TO EVALUATING.LONG-TERM PERFORMANCE OF
ENGINEERED BARRIER MATERIALS
* STABILITY OF BARRIER MATERIALS DOMINATED BYINTERACTION WITH GROUNDWATER:
GROUNDWATER + BARRIER MATERIALS INITIAL UNSTABLE SOLIDPHASES
GROUNDWATERF + SECONDARY STABLE SOLID PHASES
* TRANSITION FROM UNSTABLE TO STABLE PHASE(S)GENERALLY OCCURS THROUGH A SERIES OF INTERMEDIATEMETASTABLE PHASES OF INCREASING THERMODYNAMICSTABILITY (OSTWALD STEP RULE)
° THE SOLUBILITY OF THE SOLID PHASE IS DIRECTLY RELATEDTO ITS STABILITY;THE MORE STABLE THE PHASE IS, THE LESSSOLUBLE IT IS
* THEREFORE, EQUILIBIUM, (STEADY-STATE) RADIONUCLIDESOLUBILITY LIMITS CAN 13E USED TO CONSERVATIVELYEVALUATE LONG-TERM RELEASE OF RADIONUCLIDES FROMFROM THE REPOSITORY
WP8401-104
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I
SOLID DISSOLUTION BEHAVIORAS A FUNCTION OF TIME
Iz0
i:
Uz
0U00p
-J0
MEASURED DISSOLUTIONI |, ("LEACHIC RATES
IV
i 1- SOLUBILITY LIMIT OF PHASE A
4 STEADY-STATEREACTION
SOLUBILITY LIMIT OF PHASE 8
'I0
TIME -- WP21 I1-To
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c-I .; .
SUMMARY
° WASTE PACIAGE PERFORMANCE MODEL IS COMPRISED OFTWO SUBMODELS:
* WASTE PACKAGE DEGRADATION SUBMODEL TO ESTABLISHCONTAINMENT FAILURE TIME
* WASTE PACKAGE RADIONUCLIDE TRANSPORT/RELEASE SUBMODEL TOESTABLISH RADIONUCLIDE FLUX FROM THE ENGINEERED Btf IER TOTHE DISTURBED ROCK ZONE
WPO401-107
. I
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-
SUMMARY (CONTINUED)
* PRELIMINARY MODEL REQUIREMENTS IAVE BEEN IDENTIFIEDAND A TESTING PROGRAM IS IN PLACE TO PROVIDE REQUIREDMODEL INPUT DATA
° CODES TO QUANTIFY IDENTIFIED SUBSYSTEM PROCESSESCURRENTLY BEING EVALUATED AND/OR DEVELOPED
* FY 4 GOAL IS TO COMPLETE DEVELOPMENT OF THEPRELIMINARY WASTE PACKAGE SUBSYSTEM PERFORMANCEMODEL
WP8401-1O7A
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TYPES OF MINERALOGICAL DATA ON IANFORD ASALT
*GEtNEIRAL COMPOSITION 'a BOIlEIIOLE LOIGIHG* OIJUEIIVATIOI F URFACE OUTCROPS
o BULK CHEMICAL COIAPOGITIOUI
*PRiMARY MINEFALOGYe OPTICAL IDEHTIFICATIO1 OF PASES WITH PETRIOGRAPHIC
MICicOsCOPE PnitiCiPAJL O CAHDIDATE ORIZONS)
o XnD IDENTIFICATION OF AAJO0 PIIASES (COHAGSETTAit UTAtIUF FLOWS)
o AGIVN~IDAHCES Y POIHT COUNTS (AtDIDATE HIORIZONS)
* MIAIEIAL COUAPOSITIOJ y ELECTnOII MICHOPRODE. STERN(COIIASSETT, UUTAttUi;OTIlEI CHIDATE ORIZONBIti PoonEsel
*SECONDARIY MINERALOGY _________
* IDENTIFICATION BY XD, OEM DC-2, DC-; RRL-2, UTAIUMAIID COI1AOBI9TT)
* MEASUREMENTS OF FRACTURE FEQUENCY-0oREHIOLELOGGIHQ, OU[IFAC ISUnMAEIITB
* FAEASUIIEIAENT OF FILLED FRACTURE WIDTHS HAND LENS,IHOCULAn MICROOCOPE
o ESTIMATES OF RELATIVE PROPORTIOS OF FRACTURE FILLINGIAIJERALS-11IlOCULAR MICROSCOPE (UUTAtUM AND COHAOSETTFLOWS, OTIHER CANDIDATE IORIZONS IN POGRfl88)
o HINERAL COMPO8ITIOtJ, (DC-Q, DC-2)
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CHEMICAL COMPOSITION OF MESOSTASIS GLASS(OXIDE WT.%)
OXIDE COHASSETT COLONNADE
(RRL2-3173)
COHASSETT ENTABLATURE
(RRL2-3134).
SWO2
T102
A12 0 3
FeO*
Milo
77.1
0.6
10.0
T1.2.N.D.
i 4.7
i 0.3
t 2.7
i 0.5
60.4
2.1
13.6
0.2
0.5
4.4
4.1
2.3
0.7
MOO
Cao
Na 2o
K 20
P205
TOTAL
0.1
0.4
3.0
5.0
N.0.
98.2
f 0.1
i 0.5
i 0.8
i 1.3
t 2.7
f 0.7
± 1.7
t 2.7
± 0.1
i 0.3
i 0.0
* 0.5
i 0.5
:t 0.2
i 0.9i 0.7 98.1
POINTS ANALYZED 417BY MICROPROBE
'ALL Fe REPORTED AS FeON4.D. = NOT DETECTED
I~~~~~~~~~~~~~~~~~~~~
47
WPC401-35
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# I
COLONNADE LIG1tT GLASS.
53,000
U)
0
Ia 2 4 6 *8
ENERGY (ev)1 0
WPBSOT- 26
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I I
COLONNADE DAMK GLASS8,000
(0)
z
0
0
00 2 4 6 8
ENERGY (ov)
10
WPO307- 20
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I
ENTABLATURE MICROCRYSTALLINE BLED2500 I I I
Si
coo
I-z -
:3 ~~~~~~~~Fe0
Al p
00 ~~~~~K A 1 AO 0 \ -^S z I ) 0 9ENERGY~ (kev) 10m- V - It - , -. - -
WP8O7T-27
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FLUORIDE CONTENTOF GRANDE RONDE BASALT
(WEIGHT %)
BULK ROCKa(DC 15-3201)
GLASS b(C8095)
APATITE b(C9017)
MICROCRYSTALLINE LEBS J(RUE-1)
0.054 ± 0.003
0.08 ± 0.02
3.1 ± 0.07
PRESENT
a DETERMINED BY ALKAWI FUSION - SELECTIVEION ELECTRODE TFCHIIQUE
b DETERMINED BY MICROPFJQBEWP84D1-34
I. .
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I pa72
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CHAPTER 6 (GEOCHEMISTRY)
ITEM REFERENCE: SECTION .1, PAGE 6.0-1, PARAGRAP 5.
NRC COMMENTS: MINERAL FILLING OF TECTONIC FEATURES...THE COOLING JOINTS."/5, 16--"TEIESE MAYBE IMPORTANT IN CONSIDERING VEIRTICALFLOW PATHIS.t
STATUS: AGREED
BWIP RESPONSE:/A TECTONIC BlRECCIA AND FRACTURESSTUDY IS UNDERWAY. IT WILL BIE INCLUDEDIN AN EXPANDED FORM IN THE SCP,CHAPTER 5. IN PARTICULAR, THOSEFEATURES CONSIDERED IMPORTANT TORADIONUCLIDE MIGRATION WILL BEINVESTIGATEP.
i I .
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RELATIVE PROPORTIONS OF SECONDARY MINERALSIN THE COHASSETT AND UMTANUM FLOWS IN
BOREHO[E RFL'2- 100
> 90 _ U COI-IASSETT60 - *1
l 1. UMTANUMre
z 50
L 40- 3?
z
i-
1 0-
cc,. . .z2~~~CA ELTE SLC YIF
..- a 20-~~~~~~~~~~~~~~WO413
S I
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I .
SECONDARY MINVlNRALS IDENTIFIED INGRANDE RONDE BASALTr, PASCO BASIN
CLAY MINERALS
SMECTITES'
M0N4TMORlILLONITE
BEIDELLITE
NONTIRONITE
SAPONITE
ILLITES
CELADONITE(?)
(C~aoNaX0r61 Al +3 Mg+2)4 _6 (SlAQ68 0 20(OlII 4 n 2 0
(Ca,Na) 0 66 (AI ) 4 5(SI$Al)0 2 0(OI1) 4 uifl 2D DIOCTAITIEDRAL
(Ca.Na), 6 6;(Fe ) 4 _6 (SlA)0 20 (OH)4 nH2
(Ca,Na)0 6 6Mij 6 (SIAI)8 0 2 0 (01 1)4-11"120 TIOCTAIJEDRAL
(K,Na) (AIFe'3AMg) 2(Al S) 4 01 0(01)2 DIOCTAHEDRAL
SILICA POLYMORP-IS*
QUAR'FZ S10 2
TAIDYMITE S102
CRISlTOBALITE 5102
CHtALCEDONY S102*nH2 0(INCLUDES OPAL)
(FROM AMES, 1900; BENSON AND TEAGUE, 1979)
'IDENTIFIES THE DOMINANT SECONDARY MI4ERALS WpD401-33
I .
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SECONDARY MINERALS IDENTIFIED INGRANDE RONDE BASALT, PASCO BASIN
(Conltie d)
ZEOLITES
UIEULANDITE
CLINOPTILOLITE*
MORDENITE
PHILLIPSITE
HARMOTOME
WAIRAKITE
CHIABAZITE
ANALCIME
ERIONITE
(CaNa 2 )(A12Sl701 8)6120
(Ca-Na2 1I(2 )(Al1. 5sI7.5018).612
(Na2,I( 2 lCa)(Al2Sl10024)71120
(1/2 Ca,Na,K) 3 (AI 3Sl 5 0l 6 )611 2 0
1a(A12 S16 o01 6)61120
CaA 2 SI4 01 2-2-120
Ca(A12 s14 01 2)-6H20
Na1 L(Al 02)16(S'02)32I16H20
(Na 21 I(2 ,CaM9)4 .(A1 9S12 7 0 7 2)-27" 2 0
MISCELLANEOUS SPECIES
APATITE Ca 5 (P04 ) 3 (OH-,F,CI)
GYPSUM CnS04'2H 20
CALCITE CaCO3
PYRITE FeS2
(FROM AMES, 1980; BENSON AND EAGUE, 1979).^IDENTIFIES THE DOMINANT SCO!IDARY MINERALS WP840I-32
..
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BASALT FACTA rE FILLINGmm=_% 'I. �
Im
* * T
Vt ** �A# �
�**,*p* *�;�
� � S
I �
..- ..� Jq�
xtr
a�. -4AW 4
*'rIY'."
"i$� -
'��N..."'S.
�J. !� �
� *.;I�I * *
�4. * - ; � .. S
�
� *'tS4� �
.4
�^ =�-- Ace rurxlFllrr
_ =m~M293a
wm�UA L. I -a Ivan
I I cm
I *
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BASALT FRACTURE FILLING'
0. mm
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(CONCLUSIONS
° CANDIDATE HORIZON FLOWS ARE SIMILAR IN TERMS OF
PETROGRAPHY AND PRIMARY MINERAL COMPOSITION.
DIFFERENCES BETWEEN COLONNADE AND ENTABLATURE
WITHIN A SINGLE FLOW ARE AS GREAT AS THE DIFFERENCES
AMONG FLOWS.
* TI-E GLASSY MESOSTASIS IS HETEROGENEOUS ON A MICRO-
SCALE, AND DIFFERS SIGNIFICANTLY BETWEEN COLONNADE
AND ENTABLATURE.
' tWPLDI-29
. I
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CONCLUSIONS (Continued)
* FLUORIDE SINKS INCLUDE GLASS, APATITE, AND MICRO-
CRYSTALLINE BLEBS.
° SECONDARY MINERALS, PREpOMINANTLY CLAY, ZEOLITI,
SILICA, AND PYRIT2, EXIJI31T CONSIDERABLE VARIATION IN
RELATIVE PROPORTIONS BOTH WITHIN AND AMONG
CANDIDATE HORIZON FLOWS.
WP4O01-30
I I
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IAI USATAIUM IN5AULATUIf sernp5l*VCOO96
a.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- - -" ---.- --- - - " --
lWI UUIXifUM OLUIAIW~ l(a I.UI40Ou
La J~US UUIotiU#A GOLUMpAUC
If
I
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MINERALOGIC CIIARIACTERIZATION,F. V. 1984
1. MABTON INTERDED, (10 SAMPLES)
2. COIIA8SETT FLOW TOP, ( SAMPLES)
3. BASALT SAMPLES ASSOCIATED WIThl IYDROCHEMICAL REAKS(6 SAMPLES)
4. SULFIDE AND ASSOCIATED F-TI OXIDE GRAINS IN GQANDEROtIDE ( SAMPLES)
&. DETAILED CHARACTERIZATION OF PRIMARY AND SECONDARYt1I1lERALS FROM CANDIDATE tiloQ(ZoHSl (36 SAMPLF$)
0. ESTIMATES OF VOLUME AD ABUNDANCE OF SECONPARVMINERALS IN CANDIDATE HORIZONSl(BASED ON 3200FRACTURE WIDTI MEASUREMENTS)
7. DETAILED CHIAIACTERIZATIONOFSELECTED SAMPLES OF GRANDIRtOtIDE AND FREUCHMAN SPRINGS BASALT ( SAMPLES)
8. POINT COUNTS ON' '26 ADDITIONAL ASALT SAMPLES.
0. GRAIN SlZr MEASUREMENTS O 4 1o ADDITIONAL BASAITSAMPLES.
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Q r o v 4 '--
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EVALUATION OF BOREH-1L0E DEVELOPMENTFOR HYDROCHEMICAL SAMPLING
D.L. GRAHAM
I;
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it
L0%j
SlJllF ACERECOODING&OuIrMENTr
0IIOUND.t AtJU1 ( SRf ACE !
ALLv-d ~ h e~
WlIlRLINE -t
-ViAUEP LEVEL WATER LEVEL-aea
_ J
O0fit10L14-' IANNULU
LA
,J .,.Atr
NINQMRa
S AJNULUS
t
CONf ININGLAyffi 17 /T
: ,71INT777?
V011E1IOLE'4
2=LUI
SE NSOR --
/I I /IL L
ConR 11OLES -a
I W711 7i,LOWER -- vPACKERE L.EMENT
-I-
-t ^f *
_.
I,
I
UITEERPACKER ELEIAEUT
TElT IIITERVAP.I
, . X _
77TJ.7i I,AIJfA, cousW "w
CONFINOLA ER
U h/S / l l~s m
PACKEllELEMENT
2i1'lalzllLLL
TEST ITClVAL
.I
4U//IL/ IL&U
............ -..... ....... ......
oNFIoGURATIOIJ Fon UIJIOLE DOMtJIIOLE tACKEt CONFIGURATItO fOfl DUAL DOWN11OL PACKER
., TYPICAL DOWNIOLIE PACIKEfl INSTALLATIONS
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DRILLING FLUID TRACERS USED BY BWIPTO ASSESS BOREHOLE DEVELOPMENT
* FLUORESCEIN DYE
° TOTAL ORGANIC CARBON
fP* TRITIUM A v."VIP 00o
. *. .
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a
z%-YuE Ic\U
IRNCREAS1?JG )CUIMULATIVE TIME OR VOLUME
IDEAUZWn CURVE FOR BREHOLE >KEN~R ISDTO MONITOR BOREHOLE DELOPALNT.
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r
DC- 14 DRILLING FLUID TEST
PURPOSE
* TO ASSESS TIHE AFFECTS OF DRILLING FLUIDS ONTIlE REPRESENTATIVENESS OF GROUND WATERH-YDROCHEMICAL SAMPLES
OBJECTIVES
* PROVIDE CRITERIA FOR EVALUATING EXISTING DATA
* PROVIDE GUIDELINES FOR COLLECTION OFFUTURE SAMPLES
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- -- - -
LOCATION OF OREHOLE C4.14
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RATIONALE FOR SELECTINGBORIEIIOLE DC-14
I IT I! A FLOWING AnTESIAN WELL REQUIRING NO PUMPINGEQUIPE1IiMT FOn1 DEVELOPMENT ACTIVITIES
° NO HYDflAULIC TESTING ACTIVITIES SCHEDULED INTHIS BOREHOLE DURING THE DURATION-OF TEST
° THE ZONE TO BE USED (GRANDE RONIDE #8) HAS BEENFLOWING FOR --1 VEAlI AND SHOULD BE CLOSE TONATURAL BACKGROUND LEVELS
H HISTORICAL DATA, BOTI CHEMICAL AND HYDRAULIC,ARE AVAILABLE FOR TIJIS ZONE
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GENEIALIZEDSThATIlAIIIY
DEPTHfoins|
-
IIAtIFOfD ANDIIINGOLD
FORUATION !
OF BIALTI-TOP
bo3 431b_
!062 4324) _
10713431)-
,CS.O llam ct~_CASING
4.10 11 .43 canCASING
3A0' 181Ncm^ f:ASINJG
I
SADDLEuOUNTAIN3
BASALT
MATON INTEIIDEQ
WANATuMBASALT
VANTAGE INTERfBWD2148 6&61 2.08 NOY 17.11cm)
OPEtN uI OE
GRANDE RONDEBSALT
3336 10ITD
NOT TO SCALE
AS-BUILT DZAQgAM fOn 00IEIIOLE C.14.
PLG 2hlII I
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______ - 994 METERS
-- 1017METERS
CONFIGURATION OF PACKER IN BOREHOLE.
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1I4JECTION OF DRILLING FLUID
° Al'POXIMATELY 10,000 GALLONS OF FLUIDINJECTED INTO ZONF
I
PRIMARY CONSTITUENTS IN DRILLING FLUID
* NA BEN4TONITE
* SODA ASl (NA2 CO3)
o CAUSTICIZED LIGNITE 4A
* ORGANIC POLYMER Cogs
o COLUMBIA RIVER WATER
0 1
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SAMPLES ARE BEING COLLECTEDAND ANALYZED FOR:
I.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
° MAJOR INORGANICS
* TRACE ELEMENTS
* DISSOLVED GASES
° ST'ABLE ISOTOPES
e RADIOACTIVE ISOTOPES
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. EOIEIIOLE: DC-14ZONE. GRANDE RONDE No.
INTEFRVAL: 994 TO 1.017 METElS0
24
0
* TOCa FLUORESCENCE
ANALYTICAL ERROR t 5%OF MEASURED TOC VALUE201- a
60
s0
a
r)fn
101-
a0
121- 001a
a
8i'00
0a
a
4DRILLING FLUIDINJECTED3/16- 17/83
f - O e 0
0
20
to
0
q]0 0
IfR aV p ri . 13..- ~-
'2IR v la2L ' p .
-- aA LI
BASELINE.J Wla 105 10
CUMULATIVE VOLUME EMOVED (GALLONS)
I I I
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INITIAL TRITIUM ACTIVITYIN DRILLING FLUID 40 TU
BOREHOLE: C-14ZONE: GRANDE RONDE No. 8INTERVAL: 094 T 1.017 METERS
2
3
:3
0
9
S
DRILLINGFLUIDINJECTED3/16- 17183
0*~~~~~~~~~~~
0
0
.. 9 90 a
0 a
*0. a _t * v2/83 3/83
BASELINE
0 9 I I I
T 1E5CUMUJLATIVE VOLUME REMOVED [GALLONS)
10
I I
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l
BOREHOLE: DC-14ZONE; GRANDE RONDE No. 0INTERVAL: 994 TO 1.017 METERS
ANALYTICAL ERROR t 6%OF MEASURED VALUE
3f01-
60
0 360 -
E
z.e 9
3401-I S 9
9
0a
00
9
03201- To
DRILLING FLUIDINJECTED3/16- 17/63
A* Ia" .
2/83BASELINE
3183 104 106*CUMULATIVE VOLUME REMOVED (GALLOWS}
1ot
I I
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OREIIOLE: DC-14ZONE: GRANDE RONDE No.8INTERVAL: 094 TO 1,017 METERSi
601.
AL
.00, *O ,0 0 * a * 0 *o 009
401-
ANALYTICAL ERROI t 6%OF MEASURED VALUE
20
ANALYTICAL ERROR t 5%OF MEASURED VALUE
2601_
-jU)
6 a a *a 0 0 OIt9 10
0a0000
2401-DRILLING FLUIDINJECTED -3)16 - 17180
A
J --II _ ,
2)83LIASELINE
3/83 104 0 105CUMULATIVIE VOLUME REMOVED IGALLONS)
106
I ,
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-131-
C0
80
o
C0o
aC
|OREIIOLE: DC-14ZONE: GRANDE RONDE No. 8INTERVAL: 094 TO 1,017 METERS
0* 006
ANALYTICAL ERROR 0.2 /ooOF MEASURED VALUE
-14 -
I-151-
-100
a0
0
0 -109
a* 0 0
0*91 09) 0 0 a 90
-1201-DRILLING FLUIDINJECTED3/16- 17183
ANALYTICAL ERROR t 2.0 /ooOF MEASURED VALUE
III.1I = . J
2103BASELINE
3103. 104 106CUMULATIVE VOLUME REMOVED (GALLONS)
106
. 4
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14 C
14 a IUOREIIOLE: DC-14ZONE: GRANDE RONDE No. aINTERVAL: 094 TO 1.017 METERS;IS
I,a
i
10
XA:
z0Ea
EC4z'C
U
L}
U0
a S
OF10 C
C
a
C41- 0
8
2 - PRE-TEST VALUE <2 PMC
(JL10
l l'4
CUMULATIVE VOLUME REMOVfp GALLONS)'Os
. ,
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SUMMARY
* DRILLING FLUID AFFECTS GROUNDWATEti CHIEMISTRY
* CONCENTRATIONS ELEVATED, I.E. Nat*COINCENTRATIONS DILUTED, I.E. CIl F-
* DRILLING FLUID atRACERS USED BY THE BWIP ALLOWBOREHOLE DEVELOPMENfT TO BE MONITORED PRIORTO FINAL SAMPLE COLLECTION
* TEST PERFORMED AT DC-14 SUPPORTS PREVIOUS DATA
° TEST RESULTS FROM DC-14 WILL ALLOWEVALUATION OF EXISTINQ DATA
* EFFECTS OF OTHER DRIL1.ING TECHNIQUES(I.E. AIR ROTARY) ARE BEING EVALUATED-
, i
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HIYDROCIHEMICAL CHARACTERISTICS OF
GROUNDWATER AND TUIE INTERPRETATION
OF AVAILABLE DATA
T. 0. EARLY
I
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PFIESENTA-riON OUTLINE
EXAMINATION OF MAJOR ELEMENT.CHEMISTRYOj: HANFORD GROUPJDWATERS AS A FUNCTIONOF DEPTH.
EVALUATION OF OCK/WATER INTERACTIONIN GEOCHI,4CAL DEVELOPMENT OF SHALLOWH1ANFORD GROUNDWATERS.
EVALUATION Of- GEOCHEMICAL EVIDENCE FORVERTICAL MIXING OF GROUNDWATERSUNDEnLYING THE HIANFORD SITE.
4 I
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4
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PRESSURE v DEPTh IN
SELECTED IlOflEIOLES ON TE HAUFORD SITE
1.BOREHOLE L(P(MPa) 0.3-= 0.010 - 0.0004
(DEPTH IN METERS) 12.0 -
U MTAKUM. X
:£ 1 0.0 - 1.0 UP. REFERENCE *I 00 - (1.600 pl) I REPOSITORY
- - … COHAASETT _ LOCATION -'
tll. . 0.2 MPa * cc 0.0 _ 4 psi) -
(I) * g*0 I -.
D 136.0 I I70. I
IL~~~~~~~~~~~~~~s s i
O __ . I II I
0 200 400 000 800 1,000 1.200 1400 WPs07-32A
DEPTH m) BELOW SURFACE
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MEASURED FLUID TEMPERATURE vo DEPTH IN
SELECTED BOREIIOLES O TIE HIANFORID SITE
0
ul
U0I-
cc"IIL
wI-
00
4
20
00 200 400 600 800 1000 1,200 1400
DEPTH Cm) BELOW SURFACE
WP307- 31 IA
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SODIUM
I0.
U,
B.
~L6o 10-
z
0 -
I ...
.e- .
I .P'
i ,,
k
1
7g ~GR4 GR
10- a.* t GRANDE RONDE
0 1co 200 30w 400
CONCENThATION (L)
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CALCIUM
10'
a
J6u
C.LU
2:U-
0&W
z
40-* .. GRANDE RONDE
30-
bI G0-3
* ..
10-
U-
0I I i
10 20 30CONCENTRAT10N (g/L)
40
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.2Ii rw
10--w ADDLE MOUNTAINS
0
10 -...... .e
',I-.
1
FLUOIDE
1
4I
0wml
Ix
g ~~~~~~~~~WANAPUM
1000~~~~~~~. i'
*r I..
fo ~~~~io
10
20 CONCENTOATION (mg/IL
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CHLORIDE'0071.7.4 S~ADDLE MOUNTAINS
4*
.., : v..10-
0-
Mi
-
0
U, 10
m
a
*.. WANAPUM
*. I
.. *. o -.
* ... ;.
: 7** :~~~~ .*.~-I -,7--~
0 100 250 w
CONCENTRAT1ON (g/WLsoo
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SULFATE
'. =g1~~~~~AhO
20
40
20-
50-
0 50 100 15S 200CONCNTRAT)ON (g/U
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to
L£-A
a
L60
"A
z
GRANDE RONDEGR4G ; GR-3
0 ,
a- I I
11
7 S 90 10
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r BICARBONATE
10_
GR;3~~~~~~~.~ * 4 ag
15 A
100 , 20
CONCENTRAT ON (mgL)
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SILICON (t
CO
w-h
10- 2
w0.
3s
20-
10-
GRANDE RONDEGR-3 GR-4
. . .,
* -D o
. * * . .* .. a -.. ---'
I -- I o I o I I I I I
0 10 20 30 40 50 60 70 20 S
CONCENTRATION (tnvWU
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MEASURED REDCX POTENTIAL (Eh)2 SADOLE MOUNTAINS
¶
4 -~4 -WANAPUM
i3
2 *GRANDERONDE
O- & ~~~~~~~~~. , ,,
3-
2-~~~~~~~~~~~~~~~~::......**~~ g
Eh (VOLTS)
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b1
FUTURE PLANS - SITE HYDROCHEMICALCHARACTERIZATION
* CONTINUE ANALYSES OF GROUNDWATER FROMEVEnY TESTED tIOnIzOr4 IN NEW ORE1IOLES.
lESAMPLE SEVERAL HIORIZONS IN SELECTEDIOR EHOLES TO PROVIDE INCREASED RELIABILITY
OF ANALYSES.
* CONSIDER DRILLING ADDITIONAL BOREIOLESIN AREAS WITH SPARSE DATA
* COLLECT AVAILABLE REGIONALHYDROCIIEMICAL DATA (g. USGS).
.,I
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LuLU
ujQL
2:0 300 400
CONCENTRATION (m1
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=lum
CALCIUM CHLORIDE
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CALCIUM CHLORIDE CALCIUM CHLORIDE
CALCIUM CIILORIDE CALCIUM CKlORlDE
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CALCIUM CHLORIDE
SADDLE MOUNTAINS FORMATION GROUNDWATERS
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4Y4
d
3
w
z 2
Ca+ Mg (MEC)
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BICARBONATE3'41n --
280-
260-
240-
220
200-
160-
& SPRINGSo UNCONFINED AQUIFER* SADDLE MOUNTAINS FORMATION
g 0 40
00
-4
cz
a
zz0
0
0o
0
0~~~
0
0
00
* 00
0
0
.
I.
0.
140-
120-
100 -_0.1
0
0 0
0
1;0 Na + K
Ca Mrrog (v -
10.0 100.0
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SUMMARY -- ROCK/WATER INTERACTIO14
*A GEOCHEMICAL TREND lAS BEEN IDENTIFIED FORSHALLOW GROUNDWATF8S
*MAJOR REACTIONS SEEM TO INCLUDE:
AGLASS DISSOLUTION
AION EXCHANGE BETWEEN GROUNDWATER ANDPHASES SUCH AS CLAYS AND/OR ZEOLITES
* IT IS UNCLEAR IF HIGH CHLORIDE GROUNDWATERSRESULT FROM ROCK/WATER INTERACTION
. I
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SODIUM
CALCIUM CHLORIDE
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SODIUM CllLOQIDRa - SODIUM CIILOE D
I- 'II a
TtTo,
I ao RNLZ
* DC-iaA
I * I
f300 1
ADDLE MOUNTAINS
4001-
INorW A1
I;2
Ck
00 IWANAPUPA
7001- IcooII 'I
180
1000
1100
-_ - fftONDli-
. . A.
0 100 200 300 400 0 100 200CONCENThATIOIt mg/LITER)
300 400 500
0 1
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I .1
LOOTOPE ATIOSHYDROGEN OXYGE!N
o . .
vIac
300 -
400-
coo
700 -
1000-
1100
12(W _
f
IU
I 7AdI
I I I I . _T ' F I I III. °naL-2 f
* ' DC-ICA
ADDLE MAOUUTAINS
*I'i
Ifaa
I~~~, g W~VANAUM
I GB NANDE D ONDE-
* n I I I I A
~ .-
. D. a A. *
._w
*100 -110 -120 -130 -140 -150 -10 -12 14
1 D %.)
- -18 .1 . 20
61801t%.)
I 0
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�
Mcuill KHL-2 0515
SADDLEMOUNTAIP
WARAPUM
GRANDERONDE
\ LE~~=4WTUP
* 3 -
M A R~~~~ML
V A FL CO E TRAA
VERlTICAL PRO FE O F CHLORIDE FROM6 THR EE SOREHOLES AT HFORD
T
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HYDRAUUC HEADS DC-16A
10
o ~ o ., , -. .
ZW
MAXTW alla on.~ .~ no_
SC UGS /
law~~~~~a~
- Ait* *
X. M ANO
lls 12 12- 13 13l
. I /~~~~~~~~_ 772 i t"
9015 120 12 3 2 d
OSUV!M O YO"C MEA AM MEA SA LVU ml
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DISSOLVED GASES IN THZ GRANDE RONDE FORMATION
_ _ ....
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SIGNIFICANTFACTS ABOUT GASES IN THE RRL
lIiIGI-IER CONCENTRATIONS WITHIN TIIE WANAPUM ANDGRANDE RONDE FORMATIONS TAN ELSEWHERE AT HANFORD
*MJETtiANE DOMINATED WITHIN TIlE WANAPUM AND GRANDE1OUDE FQRMATIONS
*HITROGEN DOMINATED WITHIN THE SADDLE MOUNTAINSFORMATI0tO (LOW CONCENTRATION)
*TEMPOnARY-GAS BUIDLING OBSERVED FROM SEVERALFRENCHMAm SPRINGS FLOW TOPS IN DC-19 FOLLOWINGDRILLING
*SIMILAR GAS BUBLING OBSI:flVED IN ONE FRENCHMANSPRINGS ZONE IN DC-20 (DURATION UNKNOWN)
OMEASURED GAS CONCENTRATIONS IN GRANDE RONDEFORMATION OF DC-19 SIGNIFICANTLY LOWER THAN INRRL-2 AND DC-16
I *
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CHLORIDE CONTOURS Mg/L) - U. WANAPUMGROUNDWATERS
so >ay .rr__San1 $1
L.I J. .410~~~~I
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CHLORIDE CONTOURS (Mg/L) - L. WANAPUMGROUNDWATERS
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SODIUM CONTOURS (MS/L) -U. GRANDE RONDEA _ .wikl
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CHLORIDE CONCENTRATIONS (Mg/L) - MATON INTER8D
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qr
Mew=,~~4
* I 1 ~~ 2
a I
TENTATIV FOW UD." BAE ONHDOHMSR
L r =~~~~~~DP2 Fow >a
En n w F~~~~~~~~~~~~~~~~~1X~~~~~~~0. DCr u'
TENTATIVE OW MODEL BASED O HYDROCHEMISTRY
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SCHEMATIC CROSS SECTION AA'SIlOWING LOCATION OF HIYPOTIESIZED MIXINQ PLUME I
I
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SIGNIFICANT UNCEnTAINTIES OF HYPOTHESIZEDCONCEPTUAL FLOW MODEL
4 POSSIBLE LOCATIONS OF VERTICAL MOVEMENT OFGROUNDWATER
&IIYDROLOGIC BAR RIFl?&WITHIN THE RRL ZONE?&ACROss THE HANFORD SITE BUT ENHANCEDIN THE RRL DUE TO HIGH VERTICAL PERMEABILITY?
"ALONG MAJOR STRUCTURAL FEATURES?
*POSSIBLE MECHANISMS OF VERTICAL MOVEMENT OFGROUNDWATER
A DIFFUSION?,RESPONSE TO VERTICAL HEAD GRADIEfNTS?
I I
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OfiLOfnIHE-36 MIXING MODEL
100.0-
I
100-
toa
19S
It
Bu
I\
\ 6, 1< K ^
6K~.-
*; ---- i4,;
6~~~~,4Z 16
I - - -
_
1.0 I I I I I I - - - - - I 6 1I 7 I 30 40 60 Go 70 00 00 1o
FEACENT OF DEEP OROUNDWATE" IN SAMPLES ISASED ON Cl}
i i
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SUMMARY - CONCEPTUAL FLOWMODEL INTERPRETATIONS
*M-4IXING OF GROUNDWATERS IS OPSERVED IN IRIL I3OREIiOLES
*APPARENT UPWARD MOVEMENT OF DEEP GROUNQWATERS18 OCCURRING
4NO INFORMATION REGARDING Tt1E RATE OF MIXING ISAVAILABLE
o THE HIYDROLOGIC BARRIER MAY BE RELATED TO TlE MIXINGPROCESS IN TIE ifiL
* OTHER STRUCTURES SUCH AS TllE GABLE MOUNTAIN - GABLEBUTTE AND RATTLESNAKCE ILLS ANTICLINES MAY ALSOPERMIT VERTICAL GROUNDWATER FLOW
O GROUNDWATER FLOW WITHIN THE WA2UM. BASALTSAPPEARS TO BE TO W
.,I
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FUTURIE PLANS- CONCEPTUAL FLOW MODEL
* ATTEMPT TO COHFIRM MIXING AND EFINR MIXINGZONE
A RESAMPLE SELECTED ORE-OLESACONSIDEf DILLING ADDITIONAL BOnEIJOLESA INTEGRATE HIYDROCI1EMISTRY WITH RESULTS OF. TIlE
PIEZOMETIIC NETWORK ANI YDROLOGIC MODELS
* EVALUATE THE POTENTIAL SIGNIFICANCE OFMETIANE IN THE filR
A IMPROVE SAMPLING AND ANALYSES OF GASE8A EXPAND TE NETWORC OF GAS SAMpLE SITESA CONSIDEft THE ADVISABIlLITY OF A DEEP BOREHOLE
O EVALUATE TE ROLE OF THE HYDROLOGIC HARRIERIN GROUNDWATER MIXING
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Q-r -S<M21-= +-r-..~ V
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EXPERIMENTAL CONDITIONSBASALT/WATER TESTS
* STARTING MATERIALS:* BASALT (UMTANUM AND COHiASSETT FLOW
ENTABLATUME)
* SYNTH-ETIC GROIJ4DWATER
° MES-I FRACTIONS: s120+230, -16+60
* T = 100 0C, 150 0C, 2000 C, 300DC
° P = 30 MEGAPASCALS (300 BARS)
* WATER/ROCI MASS RATIO 2-50
o TEST DURATIONS = 26-318 DAYS
WP-312-79
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SYNTHETIC GRANDE RONDEGROUNDWATER COMPOSITION
.I-
COMPONENT CONCENTRATION MPONE14T CONCENTRATIONCOMPONENT(mg/L) CMOET(mg/L)
Si 32 Fe <0.01.
Na 340 F- 33
Al <0.08 cl- 280
3.8 O 2 170
Ca 2.8 (CO3)T 70
Mg 0.3 pH(fR.T.) 9.7
WF-8312-98
t I
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SOLUTION CATIONS AND pl v TIMfEHASAI-T-SYIJTHETIC GROUNOWATER, 3000 c
pl1
-j
z0
zwC)z0C)
4 100 300 600 1M000
TIME (Hours)
2.000 WP8208-64B
s I
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COMPARISON OF SOLUTION COMPOSITION DATAIN TESTS WITI-I UMTANUM
AND COHASSETT BASALT, 150 C
240
2
-J
E
z0
i-
.ztu
0C-
1
1
1
0 100 400 9o 1.600 2,500
TIME (hours)WPAGOB-a 80
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CALCULATED HIGH-TEMPERATURE pliBASALT/WATER TESTS
8
0:QL
7
1 1030 100 300 1,000 3,000
TIME (HOURS)WP-8312-82
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CALCULATED HIGH-TFMPERATURE pHBASALT/WATER TESTS
9
I
I
3000C 300 BARSo DR-1 101:o BR-4 5:1* BR-5 20:1* BR-7 50:1
BR-8 10:1D BR-14 10:1
4 ;& m as 0 D
noi | | I I I0~~~
*II I I~~~T A I
�, P-
7
1 1030 100 300 1,000 3,000
TIME (HOURS)WP-8312-81
..
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RESULTS OF SOLUTION ANALYSISBASALT/WATER TESTS
(pli-ANIONS)
* STEADY-STATE pf (250 C MEASUREMENTS)
e 3000 C TESTS, pH=6.5-7.0
o 1000C-1500 C TESTS, pH=8.0-8.5
o F-, Cl-, S042 -, TOTAL INORGANIC CARBON
* STEADY-STATE CONCENTRATIONS' INITIAL VALUES
WPO401-63
I I
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RESULTS OF SOLID REACTION PROPUCTCHARACTERIZATION
DASALT/WATER SYSTEM
OBSERVED ALTERATION ASSEMBLAGES AT 3000C
I IRON SMECTITE
* ZEOLITES: MORDENITE, FFRRIERITE
* POTASSIUM FELDSPAR
* SILICA (PREDOMINANTLY CRISTOBALITE)
* MINOR ILLITE
MINOR ALTERATION OBSERVED AT 1000C-150oC FORTEST DURATIONS UP TO 318 DAYS
° IRON SMECTITE IS ONLY POSITIVELY IDENTIFIED PRODUCT
WPO401-64
. 4
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ALTERATION MINERALS INGRANDE RONDE BASALT
* OCCURRENCE: FRACTURE FILLINGS. VUGS, VESICLES
* IRON SMECTITE
o ZEOLITES
* CLINOPTILOLITE
° MORDENITE
* SILICA PHASES (OPAL, QUARTZ, CRISTOBALITE,TRIDYMITE)
WF84OI- 66
., ~; lI . ~~~~~~~~~~~i9
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BASALT/WATER03-9 3000CFERRIERITE
_1.0 11m, WP6300-14A
. I
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BASALT/WATERD3-9 300 C
REACTION PRODUCTS
F-FERRIERITE wpSSo-IaM-MORDENITE
4 6
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9.
II p
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SOLUBILITIES OF SILICA POLYMORPHIS vs. TEMPERATURE:COMPARISON WITH EXPERIMENTAL SILICA CONCENTRATIONS
1
he0)08
2
3'0 100 200 300
TEMPERATURE ( 0C)WP-83l2-85
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APPLICATIONS
* ALTERATION ASSEMBLAGE STABILITY
° AT 3000C, EXPERIMENTAl ASSEMBLAGES AREMETASTABLE BUT SIMILAR TO THOSE EXPECTED IN LONG-TERM LOW-T (1000 °-50 C) TESTS
PARAGENESIS OF SMECTITE + ZEOLITES N GEOTHEfRMALAREAS IN ICELANDIC BASALTS
ZEOLITE STABILITY STUDIES
o PREDICTION OF ALTERATION IN NWRB
* TEMPERATURE - TIME HISTORY
• METASTABLE PERSISTENCE OF PHASES IN NATURALSYSTEMS
° EFFECT OF FLOW RATE-FLUID FLUX
WP840 1-6c
I ,
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ACTIVITY DIAGRAM OF SOLUTION COMPOSITIONSAND MINERAL STAI31LITY FIELDS
63000 C300 [ARS
5~~~~~~~F
X-
4 \ K-SPAR
K-MICA
0
PYROPHYLLITE1 KAQUIIITE
04 3 2 1 0
-LOG 144S104WP-0312-86
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COMPARISON OF EXPERIMENTALvs. NATURAL ALTERATION ASSEMBLAGES
IRON , ....SMECTITE
ZEOLITES .................. X...........-^-.X(e.g., MORDENITE)
SILICAPHASES
I I _ I
25 100 200
TEMPERATURE (OC)
CQi (
300
WP-4312-88
I.
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PRELIMINARY FLOW-THROUGH TFSTS
CONDITIONS
* T-300 0C, P=30 MPa, DURAT1014=76 DAYSFLOW RATE= 7 mL/day
* MAJOn FINDINGS
* ALTERATION ASSEMBLAGE CONSISTS OF Fe-RICHCHLORITE, AMPHIBOLE, ALPITE, MINOR ILLITE (?) BASEDON PRELIMINARY STEM WOlI(
* COLUMNS PLUGGED DUE TO BASALT ALTERATION
* INTERPRETATION
* FORMATION OF ALTERATION ASSEMBLAGE RESULTED INDECREASE IN PERMEABILITY
u Ui h ca kAok_ A 1 @ X ~~iL
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CONCLUSIONS(BASALT/WATER SYSTEM)
E SOLUTION COMPOSITION
* SEADY-STATE IN SITU pl IS ALKALINE FROM 100'-300'C
* STEADY-STATE CONCENTIATIONS OF COMPLEXINGAGENTS (F-, Cl-, S042 -,TC)Y VALUES IN SYNTHETICGROUNDWATER
° AT 3000 C: IN 'STATIC' TESTS EASALT ALTERS TOMETASTABLE ASSEMBLAGE OF ZEOLITES, KSPAR;FE-SMECTITE, SILICAJ ILLITE
o AT 1000-150° C: MINOR ALTFRATION OF BASALT TOFE-SMECTITE OCCURS
° TESTS PERFORMED UNDER ELEVATED CONDITIONS(3000C) ARE REQUIRED TO 'ACCELERATE' REACTIONRATES FOR PREDICTIVE MODELS
WP6401-66
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d
PAC(ING MATERIALSTUDIES
WPO40l-60
N. i
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FUNCTIONAL REQUIREMENTSOF THE PACKING MATERIAL COMPONENT
* MINIMIZE CANISTER CORROSION DURING THECONTAINMENT PERIOD (UP TO 1,000 YEARS)
* DELAY WATER CONTACT WITI- TITE CANISTER
• MINIMIZE GROUNDWATER FLUX PAST THE CANISTER
° BUFFER OXYGEN CONTPf'JT NEAR THE CANISTER
* LOCALIZE CORROSION PRODUCTS AT THE PACKINGMATERIAL/CANISTER INTERFACE
WPI401 -8O
.
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FUNCTIONAL REQUIREMENTS OF THEPACKING MATERIAL COMPONENT
(CONTINUED)
* REVENTRADIONUCLID TRANSP& -NTO THE HOSTRING THE CON ErRIOD IN THE
EVENT OF PREMATURE CANISTER BREAKTHROUGHAND WASTE FORM DISSOLUTION
o REDUCE HE RADIONUCIDEi . ATE TO THE0 TfO CKI AFTER THE CONTINMENT PERIOD
WP-8312-103
if .
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PACKING MATERIAL TEST OBJECTIVES
° DETERMINE THE THERMAL STABILITY LIMITS OFIJENTONITE IN A DRY ENVIRONMENT
* DETERMINE THE EFFECTS OF HYDROTHERMALCONDITIONS AND THE PRESENCE OF BASALT ANDGROUNDWATER ON BENTONITE STABILITY
WP-8312-93
1 4
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STARTING MATERIALS
BENTONITE:
(-400 MESH)
Na-MONTMORILLONITE
QUARTZ
FELDSPAR
OTHERS
85a%
5%
5%
5%
BASALT:
(-120+230 MESH)
MESOSTASIS
PLAGIOCLASE
PYROXENE
OPAQUES
CLAY
V48% 290h
17%
50/a
1°/WP-8312-105
*1
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E)(PERIMENTS
BENTONITE DE"YPRATION STUDIES* BEN ONITE ONLY
* ATMOSPHERIC PRESSURE
* 2500 C-5500 C
HYDROTHERMAL EXPERIMENTS* BENTONITE + GROUNDWATER
* BASALT + BENTONITE +GROUNDWATER
* 30 Mtla PRESSURE
o 1500 C-3001C WP-8312-1C6
I I
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5 -@ .6
BENTONITE DEI-IYDRATION
TEMPERATURE EXPERIMENT DURATION(° C) (DAYS)
250 340
370 1, 4, 8, 13, 21, 28, 340
440 1, 4, 8, 13, 21, 28, 365
550 1, 4, 8, 13, 21, 28, 270
WP-8312-10
S S
.I a
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* m4a1.l.. A
BENTONITE DFI-IYPRATION (TGA)
0-J
I-C,w
10 600
TEMPERATURE (0
1,000
wP83 10-40
S I
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. I
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BENTONITE l GROUNDWATERHIYDROTI-IERMAL EXPERIMENT 03-15
3000 C, 217 DAYS, W/S = 10, DICKSON
ALTERATION OBSERVED
o PARTIAL DISSOLUTION OF CLAY
e STEADY STATE AFTER 25 DAYS
* SUBSTITUTION OF Ca, Fe
* SMECTITE STRUCTURE PRESERVED
SOLID REACTION PRODUCTS OBSERVEP* QUARTZ, ALBITE, (HALITE) WP-8312-1fi
WP-8312-10. ,
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REACTION PRODUCTS BENTONITE/WATERD3-1 3000DC
WP30iop,
. I
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BASALT BENTONITE - GROUNDWATERHYDROTHERMA L EXPERIMENT D4-1
nid,> WS = 10 DICKSON
ALTERATION OBSERVED
* PARTIAL DISSOLUTION OF CLAY AND BASALT MESOSTASIS* SMECTITE STRUCTURE PRESERVED
o SUBSTITUTION OF Fe, IC
SOLID REACTION PRODUCT OBSERVED* Fe-SMECTITE
WP-312-109
4
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BASALT/1ENTONITE /WATERD4-1 150CETCHED BASALT
00
I
10 {lm wPe30- caa
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BASALT + BENTONITE + GROUNDWATER1YDRQJ.~WVIAL FXPERIMENT D1-13
&P. y;A V'S = !DICK(SON
ALTERATION OBSERVED* PARTIAL DISSOLUTION OF CLAY AND BASALT MESOSTASIS* STEADY STATE AFTER 60 DAYS
SOLID REACTION PRODUCTS OBSERVEP
* Fe-SMECTITE, QUARTZ, CIRISTOBALITE, K-FELDSPAR,MORDENITE, FERRIERITE
WP-8312-l1O
, I
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I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~E~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A .0
A
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* b #e
BASALT + BENTONITE + GROUNDWATERHYDROTHERMAL EX)PERIMENT 143-13
3000 C, 379 DAYS, W/S = 1, W8 -1, COLD-SEAL
ALTERATIO14 OBSERVED
* EXTENSIVE DISSOLUTION OF CLAY AND BASALT
SOLID REACTION PRODUCTS OBSERVED
° Fe-SMECTITE, MORDEI4TE, CRISTOBALITE, ALBITEWI'-6312-1 11
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B ASALT/BENTONITE/WATERREACTION PRODUCTS 143-13 3000C
p I
10 slm woPa3e-70
..
C I
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RESULTS OF SOI UTION ANALYSISBASALT/BENTONITE/WATER TESTS
(pli-ANIONS)
° STEADY-STATE pl-I (250C MEASUREMENTS)
• 3000C TESTS, pl1 = 5.5 i 0.2
° 1500C TESTS, pl1 = 7.0-7.5
* F- Cl-, S042 -, TOTAL CARBON
o F- DECREASES SIGNIFICANTLY
o Clr INITIAL VALUE
* 5042- DECREASES AT 3000CINCREASES AT 1500 C
* TC > INITIAL VALUE
W YP-U3$2-9i4
i i
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COMPARISON OF [OTA3%;iIUM vs. XIME
IN TESTS AT 3000C
120 _u UN D1-21^ ~~o RUN P-13
100 A NUNS 02-4 AND D3-15
E60.
40BASALT-BENTONITE
20BENTONITE
o 20 100 200 400 600 1,000 1,500 2,000 2,500
TIME (HOURS)WP-8312-0B
I I
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COMPARISON OF FLUORIDE vs. TIMEIN TESTS AT 3000 C
an
E
IL
0 20 100 200 400 600 1,000 1,500 2,000 2,500
TIME (HOURS)WP-8312-5
I
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b
CONCLUSIONS
X IN A DRY ENVIRONMFJ-NT, Na-MONTMOBILLONITERETAINS ITS STRUCTURAL AND SWELLINGPROPERTIES IN A YEAR-LONG EXPERIMENT AT 3700C
e IN A l-YDROTHERMAL ENVIRONMENT, WITH ORWITI-IOUT BASALT, Na-MONTMORILLONITE ISCONVERTED TO AN Fe-SMECTITE, WITH SOMESUBSTITUTION OF IK. POTASSIUM IS ALSOPARTITIONED INTO FELDSPAR AND ZEOLITES
AAgo- catw2- 112
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CONCLUSIONS (CONTINUED)
* IN A 3000C HIYDROTHERlMAL ENVIRONMENT, STEADYSTATE CONDITIONS ARE ATTAINED IN A FEW MONTHS,BUT THE MINERAL ASSEMBLAGE IS METASTABLE
° KINETICS MAY BE AS IMPORTANT ASTHERMODYNAMIC STABILITY IN MODELINGMINERALOGICAL CHANGES IN A REPOSITORY
WP-8312-1 13
I, 1.
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a.~ - -?AE . A W% Is
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I I
Eli
* NDICATSYSTEM
/eo CAN 13EPHASES
'ES THE GENERAL OXIDATION STATE OF THE
USED TO PREDICT TIHE STABILITY OF SOLIDAND AGUEOUS SPECIES IN THE SYSTEMI f
" zt� G
1)
I
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I a
. 1 . - I
SOLUBIILITY OF URANIUMAS A FUNCTION OF E AT 250C
, . ,. I ,
z0
P
OEJ
0
-20 -
I I I Il -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0
Eh (volts)
i
WP840t-I11
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I .
SOLUBILITY OF TINAS A FUNCTION .OF Ehl at 250 C
0
z0
i:~~~T
ri. -l0-
W s
o E-2
0 -20-j
-30
-0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0
Eh (volts)
WPG401-t1
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SOLUBILITY OF SELENIUMAS A FUNCTION Or Eli AT 251C
Z
o E 40 '
0~~
-20 _
. |I I I 11
-0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0
Eh (volts)
WP84O1-120
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EIh-pli DIAGRAM OR NEPTUNIUMLOG AUEOUS CONCENTRATION CONTOURS
1.2-
0.0 - -- -- *
0~~~~~~~~~~~
0.- --- - H
c0.0
7
pIJWP830s-36
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I I .. - ..
Eh-ply DIAGRAM FOR URANIUMLoc. AQUEOUS CONCENTIRATION CONTOURS
IEr.-4-,
0
Pf
,l-IWP830S-37
0
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* .1
pli BUFFER INTENSITY
PERCENTAGE CONTRIBUTION
OF VARIOUS SPECIES AND ACID-BASE PAIRS
100 ,-
80 Is 14 104 113 10 4 - 52 0 3 -HCO 3 ,
ul 40 o c032 -Ocoff li 260
0
0 I I0 100 200 300
T 0 C
WPO3 12-61
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Eh CONTROL 114 TlE SYSTEM BASALT+ GROUNDWATER
Fe~2 (glass) -t Fe+2 (aq) ~~~~~~(1)
Fe +2 (aq)
(aq)
-0* Fe +3I (aq) + e (2)
(3)Fe +3
+ 02 -fOXIlES+QXYHYDROXIDES
WP8401-121
. I
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SOURCES OF Eh DATA
* SO4 /1 CONCENTRATIONS IN BASALT + GROUNDWATER EXPERIMENTS AT 3000 C
o As'3/As+5 CONCENTRATIONS IN BASALT + GROUND /WATER EXPERIMENTS AT 3000 C /
* DISSOLVED 0 CONCENTRATIONS IN BASALT +2GROUND WATER EXPERIMENTS AT 1000 and 1500OC
o ELECTROCHEMICAL Eli MEASUREMENTS IN BASALT +
GROUND WATER EXPERIMENTS AT 600C
WPA401-122
I
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SULFATE-SULFIDE CONCENTRATIONSFOR BASALT PLUS GROUNDWATER
AT 3000C, 300 bars
3.0
-I,- 2.0
E
)
1.0
I1 30 100 1,000
TIME (hours)3.000
WP8312-56. . -
, I
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SYSTEM Fe-Q-S
PHASE EQUILIBRIA
AT 300°C, 300 bars
-28
-30
-0
0)
0_
32
-
1�Ii
I
I
-34
-36
-381--20 -18 -16 -14 -12 -10 -8 -6
log f.2 I
WP9S 12-50
I *
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METHODS
* ARSENIC OXIDATION STATE ANALYSIS
*As (III)/As(V) CHERRY, et.al., 1979
* HYDRIDE GENERATION - FLAME AAS
*IHYDRIDE GENERATION - GRAPHITE FURNACE AAS
*DISSOLVED OXYGEN (D.O.) MEASUREMENTS
* MEMBRANE ELECTRODE
l COLORIMETRIC
WP8302- 488
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CONCENTRATIONS OF As(V)-As(II) SPECIES
AS A FUNCTION OF ElipE
-4 -3 -2 -1 0 1
) -6
(00
0E%-
zo -8
I-
z
- 100
00
-12
200100 j50 Em
10 z0
1 K
ztu
0.1 0z00
0.01
-200 -150 -10 -
Eli (MV) WP8302-4T
p ,
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EXPERIMENTAL CONDITIONS
* As OXIDATION STATES
IBASALT+DEIONIZED WATER WITH 126 pgl A(V),.
3000C, 300 bars, W/R=10
*D. O.
1) BASALT+SYNTHETIC GRANDE RONDE GROUNDWATER
1000C and 1500C, 300 bars, WIn=1a
2) SYNTHETIC GRANDE RONDE GROUNDWATER 150 C, 300 bars
WP~aO2- 49A
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DISSOLVED OXYGEN CONSUMPTION DATAFROM SYNTHETIC GRANDE RONDE BASALT
GROUNDWATER EXPERIMENTS
1
1-
EzIii
0
U1)U)
0l
1 50 200 500 12000 2X000 3,000
TIME (hr)
IIK8311-3.102WP8302-80D
. .
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;
REDOX CONDITIONSBASALT/WATER TESTS
As(lIl)/As(V) DETERMINATIONS BY ATOMIC ABSORPTION
RESULTS: AT 3000C AFTER 11 DAYS. CALCULATED
UPPER LIMIT FOR E=-400 ± 100 mv
* DISSOLVED OXYGEN (D.O.) CONSUMPTION BY BASALT
0* RESULTS: AT 150 C, D.O. CONTENT DECREASED FROM
8.5-9 mo/L TO 0.4 mg/L IN 8 DAYS
* FUTURE STUDIES
sRATE DATA, FURTHER Eh CALCULATIONS
*REDOX BUFFERING CAPACITY OF BASALT
*~~~~~~~~~~ Wp61156
I i
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���1
A.
EXPERIMENTAL APPARATUSUSED AT SAVANNAH RIVER LABORATORIES
BY C. JANTZEN
THERMOMETE
I I
RERCsCALOMELREFERENCEPROBE
wroalt-88
.I
I .
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;
GRANDE RONDE GROUNDWATEREXPERIME:NT
BWIP BASALT PLUS SIMULATED GROUNDWATER AT 60 0 C
U)
0
I-lw
0 2 4 6 8 10 12pl
14
WPUS 12-40
I %
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I
CONCLUSIONS
° Eli MEASUREMENTS ARE DIFFICULT BUT CAN BE MADE WITH PTELECTRODES WHEN REDOX SPECIES PRESENT IN SUFFICIENTCONCENTRATIONS
° CAN REACl LOW Eli AT LOW TEMPERATURE AND SHORTTIMES
° SA/V AND RESIDENCE TIME OF THE SOLID EFFECTS Eh
Eli VALUES OF -0.4 VOLT AT pI OF 8.5 CAN BE ACHIEVED WHENCRUSHED BASALT IS USED AS A SOLID REDUCTANT INDEIONIZED WATER
.WPB401-123
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I9I
CONCLUSION
SULFER SPECIATION, ARSENIC SPECIATION, DISSOLVED
OXYGEN AND ELECTROCHEMICAL MEASUREMENTS ALL
INDICATE THAT THE BASALT/GtIOUND WATER SYSTEM
WILL ESTABLISH REDUCING CONDITIONS ON A
LABORATORY TIME-SCALE.
WP840i-124
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<l-A k4y V4 as'
r
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COMPOSITION OF SYNTI-IETIC GRANDERONDE BASALT GROUNDWATEFR
CONCENTRATIONmg/literCOMPONENT
SiNaCa
35.53582.83.4
33.4312173100
ClS0 4
CO 3-(AS HCO3-)
(I -,
CHi4
N 2Ar
7002510
9.8pli
JI
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G-VALUES (YIELDS) OF PRIMARYRADIOLYSIS PRODUCTS IN WATERAND DILUTE AQUEOUS SOLUTIONS
12
0.45
1-1
0.44
aq
2.8
I1V
2.8
H 2 0 2
0.72
011
2.7
1102
0.0GAMMA
ALPHA 1.3 0.21 0.06 0.06 0.99 0.24 0.22
, ,
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-q
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.. 4 . .X .
IRRADIATION CONDITIONS AND PROPERTIESOF IRRADIATED SOLUTIONS
1 2 3 4 5 6
SOLUTIONIRRADIATION TEMP. ( 0C)DOSE RATE (MR/h)TOTAL DOSE (MR)
GAS COMPOSITION (VOL. %)I-IYDROGENMETHANE2.2-DIMETtIYLPROPANE
SOLIDS ANALYSIS:MASS (U/)CARBON (WT%)HYDROGEN WT%)OXYGEN (WT%)
SOLUTION pl
BGW651.1340
26660.054
4.4
9.6
DIW651.1340
46450.14
3.084132.9
6.0
BGW651.177
6.1860.034
2.0
9.6
BGW1501.177
9.9850.52
2.4
9.6
DGW1505.3380
24700.30
2.186121.0
9.5
BGW/Fe1505.3380
22700.62
2.286121.2
9.3
------ Nl- i
a .
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MOLECULAR WEIGHT DISTRIBUTION OF POLYMERSGENERATED BY GAMMA RADIOLYSIS OF WATERCONTAINING METHANE
14
12
10
ia-l-
(9~ii
6
6
4
2
0 L100 1000 10,000
MOLECULAR WEIG1lT100,000
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IRRADIATION CONDITIONS AND PROPERTIESOwl IRRADIATED SOLUTIONS
7 _8 9
IRRADIATION TEMP. (C) 150 150 150
DOSE RATE (Mrad/h) 0.52 0.52 0.023
TOTAL DOSE (Mrad) 38 38 38
GAS COMPOSITION (VOL. %):
HYDROGEN 4.6 5.8 6.4METHANE 88 87 85NITROGEN 4.5 4.9 4.9ARGON 2.3 2.3 2.7MASS 44 0.19 0.22 0.282, 2-DIMETHIYLPROPANE 0.13 .0.18 0.222, 2-DIMETIiYLB3UTANE 0.055 0.074 0.088
4 ,
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oPROPOSED PRINCIPALRADIOLYTIC REACTION OFWAT EER CONTAINING METHANE
mFl2O(2) +nCI1 4() CnH 2nOm(s)+ (nfl-rn) H 2(g)
.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~I .
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POSSIBLE REACTIONSINVOLVING METHANE
o 01 - CH4 = CH3+ H 20
* 01-1 + CnlH2n+2 = Cn H 2n+1 t .H20
0 CH3 + CnlI2n1- = Cn+ H2n+4
. . .
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IRRADIATION CONDITIONS AND PROPERTIESOF IRRADIATED SAMPLES
SAMPLE WATEI /GAS DRY GAS WET GAS
IRRADIATION TEMP. (OC)
DOSE RATE (Mrad/li)
TOTAL DOSE (Mrad)
GAS COMPOSITION (VOL. %)
HYDROGENM ETIIANENlTROGENARGONMASS 442. 2-DIMETHYLPROPANE2. 2-DIMETHIYLBUTANE
1 r0
1.1
77
150
1.2
88
150
1.2
88
9.9045.0
0.380.450.520.21
1.7914.62.15
0.180.0014
0.00038
2.2904.92.4
0.230.0200.012
. ,
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RADIOLYTIC DECOMPOSITION OF METHANEDOSE RATE = 1.1 Mrad/h
2
1
2kU
lu
U)Cl:
us
U)
(9(90.4
0
-1
-2
-3
-4
-5
-6 (i WI'I I I I I I
-1 0 1 .2 3 4 5 6
LOG TIME (see)
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GAS COMPOSITION AND TOTAL PRESSURE AT1.1 Mrad/Ih FOR 701i
MAKSIM RADIOL STUDSVIK( EXPERIMENT
COMPOSITION (%)
METHANE 86.5 86.4 83 86
HYDROGEN 3.3 3.3 14.2 6.1
DIMETIYLPROPANE 2.3 2.3 1.7 0.034
NITROGEN 5.0 5.0 --- 5.5
TOTAL PRESSURE (ATM)
29.1 28.7 32.6 32.7
"1.5 Mrad/Ih FOR 60h
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. &~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CONCLUSIONS
o y-RADIOLYSIS OF WATER CONTAININGMETHANE GENERATES ORGANIC POLYMERSSIMILAR TO POLYETHYLENE
o POLYMERS CONTAIN A SMALL AMOUNT(1-3%) OF OXYGEN
o PARTICULATES ARE > 0.1 m UNPEFICONDITIONS TESTEL
o AMOUNT AND NATURE OF POLYMERS DONOT VARY WIDELY OVER RANGE OFCONDITIONS TESTED
6 i
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,Briefly. " C
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URANIUM ORE DEPOSITS AS A NATURAL ANALOG
FOR THE BEHAVIOR OF URANIUM IN A NUCLEAR
WASTE REPOSITORY LOCATED IN BASALT
WP8401-2
I
I i
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, : %-. k ot. -l . -
U 4/ U+6 EQUILIBRIA
U 2 + 4H + 2e^ = U+4 21-120
* E = -0.33 VOLT
* u+6 STABLE IN OXIDIZING ENVIRONMENT
FORMS AQUEOUS COMPLEXES WITH OH-, CO3 2 ANID F
i-4U STABLE IN REDUCING ENVIRONMENTPRECIPITATES AS OXIDE OR SILICATE MINERALS
WP8401-3
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ROLL-FRONT URANIUM DEPOSIT
SURFACE
REDOXFRONT
..,
WPB401-4
I I
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Eh-pl-I DIAGRAM FPOi URANIUMDOMINANT AQUEOUS SPElCIE AT 29W1
1.2- _, I=UI; 2
U.Glj ' L 1 ~~~~~~~~~--
4 =U t'3
2 5=.2 -
-(1.4 - - ..0 UOZ(L'0:3OF2 .
00. -
-0.0-
V 0 1 2 3 6 7 a 0 10 11:
pli
WPa4o1-1a
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El-pl DIAGRAM 1'OR URANIUMSMA A3I.E 8)1IDSI AT 2001K
(/1-J
C-- 4
0'.
o
I
1.2-
I.0 -
0.1 -
0.4 -
0.() -
-02-
--0.4 -
-0.6-
-0.0-0 1 2 3 4 5 6 7 8 0 10 It
p1-I*2' 13 14
WP401- 14
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Eli-pl )IAGRAM OR URANIUMLOG AQUEOUS CONCENTRATION CONTURS
1.2 .
1.0 -......
0.0 - *
02~~~~~~~~~~*
0.0- __-
-0.4 - ._.. .- 0_.
0 .0 -. -
-0.2 -0.- . 1
01 2 3 4- 5 G 7 0 0 10 Sl 12 1314pITs wreecaer
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8. 4
SOLID PHASES CONTROLLINGURANIUM SOLIBILITY
ORE DEPOSITS SPENT FUEL BOROSILICATR GLASS
U0 2 U0 2 U02
U S104 K-U SILICATES U 8104
K-U SILICATES
WPO401-5
/
I I
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I
CONCLUSION
URANIUM WILL HAVE VERY LOW MOBILITY IN AN
ENVIRONMENT WHERE ThTRAVALENT URANIUM IS
T1HE STABLE FORM
WPa41:~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~F
S
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.8* 0
FIELD STUDIES OF EXISTING NATURAL ALTERATION
MINERALS AT HANFORD AS AN ANALOG FOR
EVALUATION OF THE LONG-TERM STABILITY OF
ALTERATION MINERALS WHICH FORM DURING
WASTE/BARIIEII/ROCI HYDROTI-IERMAL INTER-
ACTION EXPERIMENTS
' ~~~~~~~Wp8401-B
}. ,
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OBSERVED ALTERATION MINERALS
FIELD EXPERIMENTAL
Fe - SMECTITE Fe - SMECTITE
QUARTZ ( QUARTZSILICA CH-IRISTOBALITE SILICA CIIRISTOBALITE
TRIDYMITE TRIDYMITE
IRON OXYHIYDROXIDE IRON OXYHIYDROXIDE
PYRITE PYRITE
MORDENITE f MORDENITECLINOPTILOLITE ZEOLITES HEULANDITE
ZEOLITES P-IILLIPSITE WAIRAKITEERIONITE FERRIERITECHIARAZITE ILLITE
CELADONITE CHLORITE
APATITE SCAPOLITE
GYPSUM. IC - FELDSPAR
WPB401-10
.6
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CONCLUSION
TI-E ALTERATION MINERALS WHICH FORM WITHIN
T1HE THERMAL ZONE SURROUNDING A WASTE
PACKAGE ARE STABLE MINERALS WHICH WILL
PROBABLY PERSIST ON A REPOSITORY TIME SCALE
WP84B1-11
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'SYuj -,-i,
4
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^ . X . am
MCC-1 RESULTS oR BOROSILICATEWASTE GLASS
E2f04
z0
1--z4x4-J
10 2
1101
100
10-1
CESIUM
TEST CONDITIONS
STATIC90 CDEIONIZED fl20SAIV = 0.1 cm-l
IPLUTONIUM
l~~ l I
1Q 5
10.6
10 7
1 2 3 6
TIME, LMONTigS
12
f i
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1. . . .1
B AND Si SOLUTION CONCENTRATIONVS TIME
(BASALT/IBOROSILICATE GLASS/GROUNDWATER)450 I I I
400-A
Si350
300-_ /
1000C/30MPa250 _ / WATER/SOLID 10/1
200-_/
150 _
100
50
00 100 g00 2500 4900
TIME (HOURS)WPU4GI-51
. ,
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SCHEMATIC DIAGRAMOF DISSOLUTION/PRECIPITATION FOR
WASTE FORM/WATER SYSTEM
Iz0
,
I-z
z0
aC):
Dz0
cc
KINETIC(LEACH RATE)
CONTROLPERIOD
THERMODYNAMIC(SOLUBILITY)
CONTROL PERIOD
Is
TIME -+
WIP84D1-128
I .
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UTILITY OF SOLUBILITY AND LEACH RATF DATA
IN WASTE PACKAGE DESIGN
SOLUBILITY
("STEADY STATE") DATA LEACh RATE DATA
DEFINES MAXIMUM POSSIBLE * DEFINES ATE WIICI SOLUTIONSCONCENTRATION IN SOLUTION ARE APPROACHING SOLUBILITY
("STEADY STATE"') CONSTRAINTS
* WITH WATER FLOW RATES, R * REQUIRES NOWN SURFACE AREADEFINES MAXIMUM POSSIBLE AND WATER FLOW RATERELEASE RATES TO DEFINE RELEASE ATES
*TIME INDEPENDENT -TIME DEPENDENT
* REQUIRED FR LONG-TERM *SUITABLE FOR CHEMICALPERFORMANCE ASSESSMENT DURABILITY SCREENINGOF WASTE FORMS IN TE TESTS BETWEEN WASTE FORMSWASTE PACICAGE/REPOSITORYENVIRON IENT
* i - l Ž n X e A \ t '_ _ _ _ _ _ _ _ _
.' !I , .,.I I .
., .
. Y L - wV"V c,"WL AX OIta
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. - .. Ace -I; i
APPROACHESSOLUBILITY
TO RADIONUCLIDE-DETERMINATIONS I
.
°* EXISTING LITERATURE DATA/CALCULATIONS
a EXPERIMENTAL DETERMINATION OF SOLUBILITY/STEADY STATE CONCENTRATIONS
° WASTE/BARRIEn/BASALT INTERACTIONS
a BASALT/BARRIER MATERIAL/RADIONUCLIDEINTERACTIONS
WP8aO1-129
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:1 I
SOLUBILITY OF URANIUMAS A FUNCTION OF Eli AT 25°C
Ei -0
-10 _ :< ::;SN.!-;N',
I- SOLID CONTROLLING SOLUBILITY
-20-\ US104 (s) 1111 DOMINANT SPECIES IN SOLUTION
z -20 _ \ U0 2 (C 3 ) >-0 O U(OH)5 , A. ; U02(C03}t(.
5 7----'2U02 (C03 ) 2U02(P03 'UO 2(CO 3)3
-30 @ I I I I-0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0
Eh () wp.afa-AQ&., .
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SOLUBILITY OF PLUTONIUMAS A FUNCTION OF Eh AT 250C
i
0 a
Ez0.pI-la
z0
0E-I
I I I I I
{ SOLID CONTROLLING SOLUBILITY - PUO 2 (s)/| DOMINANT SPECIES IN SOLUTION - uCO3 2t
;i. idV. _X I I. ! , .; 'I-11-
&"--I ~ ~ ~ *.- *I -I*i~,C
I SOLID CONTROLLING SOLUBILITY - PuO2 (s)DOMINANT SPECIES IN SOLUTION - Pu(OH)j
-201-
-301-O0
I I l a ., a
.6 -0.5 -0.4 -0.3Eh (V)
-0.2 -0.1 0WP8302-124 A
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I
SOLUBILITY OF SELENIUMAS A FUNCTION OF Eli AT 25°C
l
z0
U15
00C,0
10
~~~~~~~~~~7.1
SOLID CONTROLLING -
SOLUBILITY_ Em Se(s)
DOMINANT SPECIES IN SOLUTION.20- |HSe SeO3 2 -
I I I I I _ _l-0.6: -0.5 -0.4 -0.3
Eh(V)-0.2 -0.1 .0
WrosIa-8 1
I1
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~~~w .
SOLUBILITY OF NEPTUNIUMAS A FUNCTION OF Eli AT 250C I
u l l l l I I
z0
°ECI-
0
0
(50-i
-10 -.. , .... , .., 7,5 7 .. o
- -- 0 .: m -- .: ... .1.~ . --* I: ': . . My .
- SOLID CONTROLLING SOLUILITY
NpO2 (s)I
-20 - DOMINANT SPECIES IN SOLUTION5-
NPO2(C0 3) 3 NP(OIWIa
Np(oi4)-I
I 9 I
l I I I I I-30 i-0 i.6 -0.5 -0.4 -0.3Eh (V)
-0.2 -0.1 0II
wursao4-90
a .
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SUMMARY 01 SOLUBILITY ESTIMATES
FROM THERMODYNAMIC DATA
° IN GENERAL, OXIDE AND HYDROUS OXIDE SOLID PHASESPROVIDE SOLUBILITY CONTROL FOR MOST OF THERADIONUCLIDES CONSIDERED
* THE PREDOMINANT SOLUBLE SPECIES FOR THERADIONUCLIDES CONSIDERED ARE PREDICTED TO BENEUTRAL OR ANIONIC HYDROXIDE AND CARBONATECOMPLEXES
* SELENIUM, PALLADIUM AND TIN SOLUBILITIES APPEAR TO BE ASTRONG FUNCTION OF Eli UNDER REDUCING CONDITIONS
WP8401-139
. * * * to~~~~~~~~~~~~~~~~~~~~I
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LIMITATIONS TO THE EXCLUSIVEUSE OF TI1ERMODYNAMIC DATA
* ASSUMES PRIOR KNOWLEDGE OF SOLUDILITY LIMITING SOLID PHASE
* DETERMINATION OF RADIONUCLIDE SPECIATION AT EXPECTEDCONCENTRATIONS IN CHEMICALLY COMPLEX SOLUTIONS RELEVANT (TO REPOSITORY CONDITIONS IS NOT FEASIBLE NOR NECESSARY FORESTABLISHING DEFENSIBLE RADIONUCLIDE RELEASE RATES
* EXISTING SOLUDILITY DATA BASE IS LIMITED AN_SITEFB
* EXTRAPOLATION OF 25°C SOLUBILITIES TO BEYOND 1000C IS ) ~,p"QUESTIONABLE WITH ENTROPY/HEAT CAPACITY DATA
* MANY (MOST?) RADIONUCLIDES ENTER INTO SOLIDS IN TRACEAMOUNTS (SOLID SOLUTION) RATHER THAN FORMING THE MAJORCOMPONENT OF A SEPARATE PHASE
WPB401-131
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;
LIMITATIONS TO THE EXCLUSIVE USE OFTHERMODYNAMIC DATA
(Continued)
A)
* SYNTHESIS OF RELEVANT RADIONUCLIDE-BEARING SOLIDS AREDIFFICULT, OFTEN IMPOSSIBLE, WITH EXISTING TECHNOLOGY
* RELIABLE SOLUBILITY MEASUREMENTS ABOVE 1000 C ARE MEAGERFOR COMMON SOLIDS, REFLECTING DIFFICULTY OF OBTAINING HIGH-TEMPERATURE DATA
* THERMODYNAMIC STABILITY OFA RADIONUCLIDE-BEARING SOLID WILLBE RELATED TO OVERALL CHEMICAL COMPOSITION OF THE SYSTEM BEINGTESTED. INTERACTIONS WITBI OTHIER SOLIDS/BARRIER MATERIALS MAYBE IMPORTANT
* METASTABLE/NONEQUILIBRIUM REACTIONS ARE COMMON INLABORATORY HYDROTHERMAL TESTS BELOW 3000 C, AND ARE COMMONIN NATURE BELOW 1000C
WP8401-132
I .
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SOLID DISSOLUTION BEHAVIORAS A FUNCTION OF TIME
MEASURED DISSOLUTION "LEACH") RATES
t~~~~~z0P: ISTEADYSTATE REACTION
z
z -0
z9 ~~~~~SOLUBILITY LIMIT OF FIAL STABLE SOL
0
01 1 10t 12 13 14 15
TIME _
2K8312-5.9
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STEADY-STATE CONCENTRATIONSOF KEY RADIONUCLIDES FOR CHLW (76-08) GLASS
(DASSIED LINE CONCE"TRATION REQUIREDTO EET .1 EPA LIMIT UNDER EXPECTED CONDITIONS)
IZ
0
lJsratI-
a,0u
U
: - (.1
t0o A
_ .IZIn
- tL} 0
0 0
Z c-
10°
0 1,000 2,000 3,000
TIME (hours)
wroacO-1 a3C
4 I
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-
I-
STEADY-STAT CONCENTRATIO4SOF KEY RADIONUCLIDES FOR C-ILW (76-68) GLASS
(DASHED LINES ARE CONCENTRATIONS REQUIREDTO MEET 0.1 EPA LIMIT UNDER EXPECTED CONDITIONS)
64e- 4
-j
N-
z.0
I-
z
z0U
101
100
10 1
:; L; V tC-Buj Ie
i4~"s. zi
0 1000 , 2,000
TIME (hours)WPM306-1 2 C
0 1
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I -
-I
STEADY STATE VS INITIAL U CONCENTRATIONSUNDER REDUCING CONDITIONS
-31-.
-4
-a
-J
I ~I I
0~~~
15A
< 0~~.22atm
* COIIASSETT - 10 0+
* R-3* WATER8 OCK=1011* 30 DAYS
I I I
huqts~ q
-6 5 . I..l a ,il S--t
1'. lo ( ? D c )
-61- 00 MESII
-7.J-8 -7 -6 -5 -4
LOG C (M)WPS401-114
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STEADY STATE VS INITIAL P SOLUTION CONCENTRATIONUNDER REDUCING CONDITIONS
*-OIIA68ETT (-Id 0--GO MESI)}
- WATERIBOLD=10_
* 30 DAYS /oC) /-)
(._
0-j
_ -121 , , I I I -. 15 -14 -13 -12 -11 -10 -a -8
LOG (M)
WP840)- 11
i i
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} } . . e .
STEADY STATE VS INITIAL nla SOLUTION
CONCENTRATIONS
-6
0-I
-7
-8
-DI I I i .
-12 -11 -10 -9 -8
Lo C (M)WI'8401- 118
I I
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v
FUTURE EXPERIMENTAL WORK
* WASTE/MARRIER/ROCIK INTERACTIONS
CONTINUATION OF TRACER-LOADED BOROSILICATEGLASS/GROUNDWATER EXPERIMENTS AS A FUNCTION OFTEMPERATURE AND GAS CONCENTRATIONS (e.g., METHANE)WITH AND WITHOUT BASALT
CONTINUATION OF FULLY LOADED BOROSILICATE GLASS ANDSPENT FUEL HYDROTHERMAL TESTS WITH AND WITHOUTBASALT AND BARRIER ELEMENTS
INITIATION OF OVER SATURATION IjYDROTH-ERMAL TESTSWITH COLD WASTE FORMS, BASALT AND BARRIER MATERIALS
* BASALT/BARRIER MATERIAL/RADIONUCLIDE INTERACTIONS
USE OF LOW OXYGEN ENVIRONMENT AND BASALT/GROUNDWATERINTERACTIONS INSTEAD OF HYDRAZINE TO ACHIEVE REDUCINGCONDITIONS
USE OF AS III/V TO ESTIMATE Eli OF EXPERIMENTAL SYSTEM
WP8401-136
I i
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I FUTURE EXPERIMENTAL WORIK (Continued) i
LONG-TERM BATCH EXPERIMENTS TO MORE ACCURATELYDETERMINE STEADY STATE SOLUTION CONCENTRATION ANDRADIONUCLIDE DISTRIBUTION BETWEEN SOLID AND LIQUIP
USE OF CHEMICAL SPECIATION TECHNIQUES TO DETERMINEOXIDATION STATES OF MULTIVALENT RADIONUCLIDES IN SOLUTION IAND SOLID (IF POSSIBLE)
s ~ ~~~~~ l-
EMPHASIS ON SOLIDS CHARACTERIZATION TO IDENIRADIONUCLIDE-BEARING PRECIPITATES
rIFY - cl
&wz,:LiC9 A.zz
4xs Ol UrLmA- _
l
WP8401-137
I i
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SUMMARY
* LEACH RATE DATA CANNOT BE USED TO EVALUATE LONG-
TERM WASTE FORM PERFORMANCE BECAUSE IT IS AN INITIAL,
TRANSITORY PHENOMENON.
* SOLUBILITY/STEADY-STATE CONCENTRATION LIMITS,
IMPOSED BY RADIONUCLIDE-BEARING SOLIDS, REPRESENTS A
TESTABLE AND DEFENSIBLE APPROACH TO EVALUATING
LONG-TERM WASTE FORM PERFORMANCE.
• INITIAL ESTIMATES OF SOLUBILITY-LIMITED
CONCENTRATIONS FOR RADIONUCLIDES HAVE BEEN BASED
ON EXISTING THERMODYNAMIC AND LABORATORY DATA.
THllS DATA WILL BE SUPERCEDED'BY SITE-SPECIFIC LABORATORY
TEST RESULTS.
WPD401-133
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SUMMARY (Continued)
THE PRIMARY A1'11OACI OF T-IE BWIP IS ON DETERMINATIONSTEADY-STATE RADIONUCLIDE CONCENTRATIONS,OBTAINED ON ACTUAL REFERENCE WASTE FORMS ANDBARRIER MATERIALS, OVER THlE RANGE OF TEST CONDITIONSREVELANT TO A REPOSITORY LOCATED IN BASALT
STEADY-STATE/SOLUBILITY MEASUREMENT WILL BEGATHERED PIMARILY FROM UNDERSATURATED (REALISTIC)CONDITIONS, SUPPORTED AND BRACKETED BYMEASUREMENTS OBTAINED FROM OVERSATURATEDCONDITIONS
RADIONUCLIDE RELEASE RATES WILL BE PROPORTIONAL TOTHE PRODUCT OF STEADY-STATE CONCENTRATION ANDGROUNDWATER FLOW RATE (PROPORTIONAL TO ONLYSTEADY-STATE CONCENTRATION FOR DIFFUSIONAL FLOWCASE)
WP8401-134
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QIo1) is=%
r
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STATUS OF SITE CHARACTERIZATION
* EMPHASIS ON NATURAL COLLOIDS
* MINERALOGICAL IDENTIFICATION
* DEMONSTRATION OF STABILITY
* DETERMINATION OF SIZE DISTRIBUTION
° LIMITATIONS TO CURRENT RESEARCH
* CONTAMINATION BY DRILLING MUDS/PIPES
* RESUSPENSION OF FILTERED COLLOIDS
* MECHANICAL GENERATION OF COLLOIDS
* PREVIOUS STUDIES OF NATURAL (BUT NON-BASALTIC) SYSTEMS
*. NERETNIEKS (1978)
COLLOIDS 0.6 ppb
* BARNES (1976)
Al 0 COLLOIDS 3.0 ppb2 3 .WNd401-67
I I
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I I
FACTONS CONTROLLING THE RADIONUCLIDECARRYING CAPACITY OF REPOSITORY
GROUNDWATER
SOLUBILITY - LIMITED CONCENTRATION
- SORPTION OF RADIONUCLIDES
+ COLLOIDS - CONTAINING RADIONUCLIDES
- TOTAL 'CONCENTRATION' OFRADIONUCLIDES IN GROUNDWATER
WP84O1-63
I
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VARIOUS CLASSIFICATIONS OF COLLOIDS
THERMODYNAMIC
6 LYOPHlILIC (STABLE) COLLOIDS
6 LYOPHOBIC (METASTABLE) COLLOIDS(TYPICAL OF COLLOIDS IN GEOLOGIC SYSTEMS)
FORMATION PROCESS
6 PHYSICAL DISAGGREGATION/WEATHERING(e.g. CLAYS, RUST')
4 PRECIPITATION(e.g., OXIDES OF Si, Al, Fe)
COMPOSITION
TRUE COLLOIDS - PARTICLES IN WI-IICtI A RADIONUCLIDE IS ASTRUCTURAL COMPONENT (e.g. Pu HYDROXIDE POLYMERS)
6 PSEUDO-COLLOIDS - PARTICLES ONTO WlICH A RADIONUCLIDE ISSORBED (e.g. CLAYS, SILICA, IRON OXIDES)
WPD401-64
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I 6
EFFECTIVEPARTICLE
1
I
'- t
to 1
I
o 1It
zrI1
w
TRANSPORT VIPLOCITIES VERSUSRADIUS (ROM AIPS, et al., 1982)
102
i
00
to-
10-2
10-4
1o-t0 10-9 R-,, 10-7 10-6
PtTICU:t nlADIlls, 11 (m} WPO415
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| COLLOID RESEARCH AT THE BWIP
* CHARACTERIZATION OF POSSIBLE EXISTINGCOLLOIDS IN SITE GROUNDWATER
* IDENTIFICATION OF RADIONUCLIDE-BEARINGCOLLOIDS ORMED IN WASTE/BARRIER/ROCI( TESTS
4 DVAUPTION-oF POT ENTIAL TRANSPORT 17-ItYL 'I CSBTAf0<LLE.S- MJY LA3^Rf
* EVALUATION OF POTENTIAL TRANSPORT OFRADIONUCLIDE-BEARING COLLOIDS BY LABORATORY IAND PILD TESTS
° DETERMINATION OF RADIONUCLIDE DISTRIBUTION/t3ETWEEN GROUNDWATER, COLLOIDS, AND GEOLOGICSOLIDS
WP840146
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I .
: . -
STATUS OF SITE CHARACTERIZATION
tEMPHASIS ON NATURAL COLLOIDS
* INERALOGICAL IDENTIFICATION
* tEMONSTRATION Or- STABILITY
* DETEtlMitATION OF SIZE DISTRIBUTION
LIMITATIONS TO CURIUENT RESEARCH
CONTAMINATION DY DRILLING MIUbSIPIPES
* RESIttPENSION OF FILTERED CoLLOIDS
* MCHANWICAL GENERATION OF COLLoIDS
* PREVIOUS STUDWtS OF NATURAL (BUT NON-BASALTIC) SYSTEMS
* NtRETNIEKS (1978)
COLLOIDs o 0.0 ppb
* BAhNES (4970)
A12 03 COLLOIDS • 3.0 00p
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f., -
------
STATUS OFWASTE/BARRIE/FROCI TEST RESULTS
* DETERMINE TENDANCY FOR COLLOID FORMATION
Pu- Np>Tc> U.
* EVALUATE THE EFFECT OF BARRIER MATERIALS ON FORMATIONOF RADIONUCLIDE-BEARINc COLLOIDS
* ESTABLISH COLLOID SIZE DISTRIBUTION FROM SOLUTION DATA
* UNFILTERED
* 400 nm FILTERED
* 1.8 nm FILTERED
° CHARACTERIZE COMPOSITION AND MINERALOGY OFFILTERED COLLOIDS
WP8401-68
Ii
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CONCENTRATIONS OF Pu IN HYDROTHERMALTEST SOLUTIO1N WIT1H GLASS 1- BASALT
+ GROUNDWATER AT 2000C-(EFFECT OF FILTRATION)0.010000
0 Pu UNFILTERED
A Pu 4,000 A0.001000 0 Pu ia A
z0
0.000100
z00
0.000010
t I~~~~~~t
0.000001 I0 500 1.000 1.500 2.000 .. 2.500
TIME ("OURS) WPa401-143
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i
.@ .r r
i
F ILTR1ATION EFFECTON RAIIONUCLIDE CONCENTRATIONS
100
z0
I-
a:
z
0
z00
L-0
0
a:
1 clip Pu I Tc Hp fu
BOROSILICATE GLASS BOROSILICATE GLASS- WATER AT 2000C + BASALT + WATER
AT 2000CWPO UI-104
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I. , .1
e
STATUS OF COLLOID SORPTION STUDIES
STATIC TESTS
* MEASUREMENT OF SORPTION FOR Se, Tc, U , and Np ON SILICA ANDBENTONITE COLLOIDS
* DETERMINATION OF REDISTRIBUTION OF SORBED RADIONUCLIDESBETWEEN COLLOIDS AND BASALT
* EVALUATE EFFECT OF TEMPERATURE AND RADIONUCLIDECONCENTRATION ON COLLOID FORMATION
DYNAMIC TESTS
* EVALUATE EFFECT OF FLOW RATE ON SORPTION BEHIAVIOR ANDCOLLOID STABILITY
* DETERMINATION OF RADIONUCLIDE REDISTRIIBUTION AND SILICACOLLOID SORPTION IN THE PRESENCE OF BASALT
WP8401-70
4 4.4JCAIL)
I I
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* * s z % 4
RADIONUCLIDE DISTRIBUTION BETWEENCOLLOIDS + GROUNDWATER + BASALT
COLLOID SYSTEM Se Tc Ra U Np
BENTONITE(OXIDIZING) 4% 1% 62% 47%
BENTONITE(REDUCING) 64% 36% - 73% 94%
BENTONITE +BASALT (REDUCING) BASALT COLLOID - BASALT COLLOID
SILICA(OXIDIZING) 0% 0% 99% 100% 99%
SILICA(REDUCING) 30% 86% 99% 98% 99%
SILICA +BASALT (REDUCING) BASALT BASALT BASALT COLLOID COLLOID
-_
WP8401-71
4 .
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0t
EFFECTS OF TEMPERATUREON4 SILICA COLLOID IN
COVIASSETT
ON URANIUM SORPTIONTHE PRESENCE OFBASALT
100
-l-4Un
0C)m
z
nU)
Iii1a.za
-a-40
z09!
80
60
40
20
01..-0.0001 0.001 0.01 0.1 0.5 1.0
SILICA COLLOID CONCENTRATION, will
WP8401-72
I I
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*.
FLOW-THIROUGH SORPTION BEHAVIOROF 1 WT% SILICA COLLOID
z0F:
I-zW~0)z00-J4
zz0
zIII
z0C)z0:-.10U)
1.0
I I I
600 C0.5 lo 0.7 rGR-3 GfOOXIDING I
1 0 I-
0.6 -
Ilhr I'UNDWATERCONDITIONS U 'k ON COLLOID FOF
STATIC BASALT/SILICU (UNFILTERED)
Ra m ON COLLOID FOFSTATIC BASALT/SILIC
Ha (UNFILTERED).o FIT -RED-- A -
,. 1.5nm FILTEl)ED SOLUTION (U AND Ba)'-0_w -111 / I I
/ i
0.4 _
IA TEiST
0.2
O _0
�-- � � I - --- - -
1.0 2.0 3.0 4.0
16o , 6 PORE VOLUMES OF EFFLUENTWPe401-13
vatlwt
iI
I .I
I
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FUTURE PLANS
* FIELD STUDIES ON POSSIBLE NATURAL COLLOIDS AWAITDIRECT ACCESS WITHIN AN EXPLORATORY SHAFT
a IN SITU FIELD TESTS OF COLLOID TRANSPORT THROUGHREPOSITORY HORIZON
* CONTINUED CHARACTERIZATION OF COLLOIDS FORMED INWASTE/BARRIER/ROCIC TESTS
* LABORATORY STUDIES ON TRANSPORT OF RADIONUCLIDE-BEARING COLLOIDS WITHIN NATURAL (FRACTURES) ANDENGINEERED (POROUS) MATERIALS
* PHYSICAL FILTRATION
* COLLOID SORPTION
* RADIONUCLIDE DISTRIBUTION
* COLLOID STABILITY
WP6401-74
I .
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"I',-�, Cfl F:�
I
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USE OF SORPTION DATA RADIONUCLIDERELEASE AND TRANSPORT MODELS
(1) l(d (DISTRIBUTION COEFFICIENT)
(2)
(3)
S = 14c
S = KIeC1 + KC2C
(FREUNDLICH ISOTHERM)
(LANGMUIR ISOTHERM)
(4)
(5)
d (S/Sm) = 1 (S. S)d=
l~d = 4C Nd/N max
(FIRST ORIDER RATE EQUATION) X cE
(FREUNDLICH ISOTHERMFOR HYSTERESIS)
(1 - Nd/Ns)
WP-0312-72
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ASSUMPTIONS USING id FOR MODELING
• INSTANTANEOUS SORPTION AND DESORPTION
* LINEAR SORPTION ISOTHERMS
* SINGLE-VALUED ADSORPTION AND DESORPTION
ISOTHERMS
WPD4O1-135
I I
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.j~.
EFFECT OF SORPTION iHYSrERESIS ONSOLUTE TRANSPORT (ELUTION CURVES)
1.0 I I I
I |- - REVERSIBLE IHYSTERESIS
0.6-C
co
0.4-
0.2-
0-1.0 2.0 3.0 4.0 5.0
, V '
-o wP-a312-Ts
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' >
B. - + A.. S
EFFECT OF NON-ILINEAR SORPTION ON.SOLUTE TRANSPORT
0.20
0.15S
0.10
0.05
0 20 40 60 80 100 120.
DISTANCE FROMINLET WP-5312-TO
i I
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-t
I .. ! . .
ESTIMATED ENVIRONMENTAL PARAMETERS1,000 YEARS AFTER REPOSITORY SEALING
r - . ~
<
VALUES FORPARAMETER REFERENCES
NEAR FIELD FAR-FIELD
TEMPERATURE (aC) 51 TO 150 AMBIENT TO 51 ALTENHIOFEN (1981)
PIIESSUBE (MPa) 9.3 TO 11.1 < 11.1 SMITH ET AL., (1983)
GROUNDWATER FLOW DIFFUSION -4VELOCITY (M/YR) CONTROLLED 10 TO 19 DOE (1982)
Eh (VOLTS) ru -0.45 -0.2 TO -0.4 JACOBS AND APTED (1981)
pH 6 TO 10 9 TO 10 APTED AND MYERS (1982)
GROUNDWATER ALTERED GRANDE RONDE DOE (1982)COMPOSITION GRANDE RONDE
GEOLOGIC OR BASALT BASALTENGINEERED BACKFILL SECONDARY MINERALS DOE (1982)SOLIDS COMPOSITION CANISTER FLOW TOPS
SEAL INTERBEDS
RADIATION DOSE DEPENDS ONRADITIO DOEDISTANCE FROM NILRATE ~SOURCE
wifrosu 1-1 I
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KEY RADIONUCLIDES STUDIED
1291
99Tc
2 37 Np
2 2 GRa
234U
21 OPb
79Se
2 3 9 Pu
14 C
135;s
9 0 Sr
242A m
WP-8312-65
I
I
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ADVANTAGES OF THE BATCH METHOD
E SIMPLER DESIGN AND OPERATION
o A LARGER NUMBER OF EXPERIMENTS CAN BE RUNSIMULTANEOUSLY
o ALLOWS LONGER EQUILIBRIUM TIMES FOR SLOWREACTIONS
o SOLUTION FLOW RATE, POROSITY, AND DISPERSIONARE NOT VARIABLES
° NO PROBLEMS WITH CHANNELING
* RESULTS ARE MUCH SIMPLER TO INTERPRET
WP840t-136
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ADVANTAGES OF THE FLOW-THROUGHMETHOD
* SIMULATES ACTUAL FIELD CONDITIONS MORECLOSELY
* CAN DISTINGUISH BETWEEN MORE THAN ONESORPTION REACTION OR RADIONUCLIDE SPECIES
* THE EFFECTS OF SORPTION/DESORPTION KINETICS,IRREVERSIBLE SORPTION REACTIONS, ANIJ NON-LINEAR ISOTHERMS CAN BE EVALUATED UNDERREALISTIC FLOW CONDITIONS
* THE COMPOSITION OF THE INFLUENT SOLUTION CANBE MORE CAREFULLY CONTROLLED SINCE THESOLUTION IS CONTINUALLY REPLENISHED
WPB4O-13T
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CONTROL OF Eli
° EXCLUDE OXYGEN, LET SYSTEM (SOLIDS ANDGROUNDWATER) CONTROL THE Eli
a ADD REDOX COUPLE WITH APPROPRIATE E1
WP-8312-60
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t.*.
REQUIREMENTS FOR REDOX COUPLE
° MUST BE SOLUBLE AND CHEMICALLY STABLE AT THEpi AND TEMPERATURE OF THE EXPERIMENT
° REACT RAPIDLY WITH THE RADIOELEMENT OFINTEREST AT THE REQUIRED Eli
* NOT FORM COMPLEXES WITH RADIOELEMENTS OlINTERFERE WITH TIlE SORPTION REACTION
* NOT PRODUCE REACTION PRODUCTS THAT WOULDINTERFERE WITH TlE SORPTION REACTION
*WP-8312-67
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1
*1
REDUCING AGENTS TESTED FOR Eli CONTROL
REQUIRED CRITERIA
REDUCINGAGENT
APPROXIMATECALCULATEDEh RANGE (1)
VOLTSSOLJBLE
AND STABLE?RAPID
REACTION2COMPLEX
FORMATION?
INNOCUOUSREACTION
PRODUCTS?
N2 t14 . 0 -0.7T ) YES YES NO YESSo3
2 - -0.5 TO -0.6 YES NO POSSIBLE YESS2032- -0.1 TO -0.25 YES FAIR POSSIBLE YESHS- -0.3 TO -0.4 YES NO POSSIBLE YESQUINHYDRONE 40.2 TO *0.1 YES ? POSSIBLE NO
(1) IN THE RANGE OF plI TO 10, 25°C AND (OXIDIZED SPECIES) = (REDUCED SPECIES)(EXCEPT FOR N21-14).
(2) Eh VALUES FOR 0.05 M " 2H 4.
WP-6312-65
8 6
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I
EFFECT OF HIYDRAZINE CONCENTRATION ON ToSORPTION ON ALTERED PACIING MATERIAL
INITIAL Tc CONCENTRATION
2-
1 - ° 2WEEKS=4 WEEKS
F\
0
O~~~~~~ I
-4 -3 -2 -1 0
LOG [Nk H 4J.A MWP6401-76
I i
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RADIONUCLIDESORPTION PARAMETERS EVALUATED
° KINETICS OF SORPTION AND DESORPTION
* STEADY-STATE SORPTION AND DESORPTIONISOTHERMS
* GROUNDWATER COMPOSITION
o Eli AND pli
* TEMPERATURE
WP-M312-04
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NEPTUNIUM DESOIPTION RATE CURVES(TEMPERATURE = 600 C, OXIDIZING CONDITIONS)
40 I I I I
I
30 -Ilimcc0'I)I1I
z
201-
COHASSETT BASALTSo = 1.1ax10 -13 maoll/g
UMTANUM FLOW TOPSo = 2.95x10 -13 mol/g
J~~~~X), _X , rC
101-
0-1 I 0 1 2 3 4
LOG t(HlOURS)
WPI401-50
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^ r -*s ^ b.
CONCLUSIONSFROM RADIONUCLIDE SORPTION KINETICS STUDIES
SORPTION ON FRESH (UNALTERED) BASALT IS MUCH SLOWERTHAN Oil FLOW TOP BASALT WHICH CONTAINS SECONDARYMINERALS
DESORPTION RATES ARE MUCH LESS THAN SORPTION RATES(RADIONUCLIDES ARE IRREVERSIBLY SORBED)
RADIONUCLIDE SORPTION ON UMTANUM AND COHlASSETTBASALTS IS NOT MEASUIREABLY DIFFERENT
• SORPTION RATES FOR U, Np, Pb, and Tc ARE GREATERI UNDERREDUCING CONDITIONS
• SORPTION RATES FOR U, NP, AND Pu ARE SIMILAR FOR A GIVENSORBENT AND OXIDATION STATE
* BECAUSE OF SLOW SORPTION RATES, LABORATORY FLOW-TtI-ROUGII (COLUMN) SORPTION MEASUREMENTS ON FRESHCRUSHEP BASALT ARE NOT PRACTICAL AT LOWTEMPERATURES - FLOW TOP BASALT CAN BE USEQ,1iHOWEVER
WP8401-79, .
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I
SORPTION/PESORPTION ISOTHERMSFOR Np (OXIDIZING)
MABTON INTERIBED
in -6.0:30'a -6.6z0z -7.00s-o
Ir-I-
w -8.0z0o -8.5
z9 -8.0
o -7-4
--S
.0 -6.6
LOG Np
-6.o -6.5 -5.0 -4.d
CONCENTRATION, mole.
-4.0
WPG302-26
I
IIi
.
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SORPTION/DESORPTION ISOTHERMSFOR Np (REDUCING)
MABTON INTERBED
(/)
z0
z0
z
0o
£1
- O}
z
0
-
0I O
z
so0
-6.0
-9.0 -8.0 -7.0 -6.0 -6.0
LOG Np CONCENTRATION. moleIlWPO302- 2T
4 I
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. . 1 s o -
SORPTION/DESORFITIUN ISOTHERMS FOR SE.(iREDUCING)
ALTERED BACKFILL-5.5
-6.0
LOG Ssmole/g
I I 1900 C
DESORPTION /
. ~/
SORPTION/
I//
/. ~~~~~~/
-6.5
-7.0 -6.0Log C, M
-5.0
WP-8312-62
I
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SORPTION/DESORPTION ISOTHERMS FOR Tc(REDUCING)
AL-TERED BACKFILL-5.5 l l I
900 C
//
/DESORPTION
_ _6_ _ 7/
-6.0
LOG Somoie/g
/
// SORPTION-6.5 -
1 I lI-7.0 -6.5
tog C, MWP86.0
WP-8312-61
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0 .. ,.22.
SORPTION/DESORPTIONFREUNDLICH CONSTANTS
MABTON INTERBED ALTERED ACKING MATERIAL(60°) (900 C)
ISOTOPE REDOX Ns15 Nd Ns/Nd Ns 1d Ns/Nd
Se REDUCING 1.0 0.023 47 0.99 0.011 0
Tc REDUCING 0.5Q 0.011 113 1.03 0.015 609
Np OXIDIZING 1.0 0.68 1.7 1.09 0.12 9.1
Np REDUCING 0.87 0.002 435 0.96 0.014 69
U OXIDIZING 0.96 0.084 12 0.70 0.17 4.1
U REDUCING 0.79 0.006 182 0.94 0.012 78
Ha REDUCING 0.98 0.052 36 _ . -
WP-6312-60
I)~~~& 1(,s t -5
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SIGNIFICANT GRtOUNDWATER VARIABLES
FO SORPTION
RADIONUCLIDE SIGNIFICANAT VAPIAM!S
cm IOCtNa+
SraC2
Tc
;Se Ell, Ca2±
NP El, COi oIIcO
Pu Eh, Ca .S0494
Am Na4Pll
Ba.I a
.. wPeele-6
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STRUCTURE AND ONDING IN SURFACECOM PLEXES
H20N
H20r
OH2
Sl °112
"" OH2I
O"!2
1120%
I12 O",fl
IO112|- \OH2
oil 2
I,, Z"
l II
012
O ..
/S /0 112.
1 -IIl
I l2 S/7 r , ,, -- ,7- ., .~~~~~~~~~~~~~~~~~~~I
[if iV WP#4 -oI i
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FUTURE NEAR-FiEL SORPTION STUDIES
* BATCH MEASUREMENTS OF SORPTION/DESORPTIONISOTHERMS AND SORPTION CAPACITY FOR PACKINGMATERIAL, ALTERED BASALT, COLLOIDS AND CANISTERCORROSION PRODUCTS.
* FLOW-THROUGH MEASUREMENTS AND MODELING OFRADIONUCLIDE TRANSPORT IN LABORATORY COLUMNSUSING THESE MATERIALS
* DEVELOPMENT OF METHODS FOR CONTROLLING AND | )MEASURING Eli AT LOW TEMPERATURE IN LABORATORYEXPERIMENTS T
° LABORATORY MEASUREMENTS OF COLLOID TRANSPORTTHROUGH ENGINEERS BARRIERS
WPe4OI-O1
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,I.D.
.pUMMAflY QF 8ITE QYBTEM SORPTION STUDIES
SOLID PIASE. SOLUTION RADIONUCLIDES EXPERIMENT REDOX TEMPERATURETYPE CONDITIONS 100)
1. MIXED GR-1 So, &, Tc, I, BATChI, OXIDIZING 23.60SECONDARY G0-2 Co. a, U. Np, (60 DAYSI0INEIlALS. u AmPOMONA FLOW . AINSTF),BLENDED
2. RATTLE- 01G-2 Sa. Sr, Tc, Cs. BATCi, OXIDIZING, 23, 80,65SNAKE RIDGE Fla. U, Np Am 14 DAYS REDUCING.INTERBED. (I YDRAZINEIChu-8 lED
3. UMTANUM (3R-3 So, Tc. P, R. BATCH, OXIDIZING * 60FLOW TOP. lit, U. NJ). Pu < 1-56 DAYS REDUCINGCRUSIIED .OLUMN (-iYDRAZINE)
4. MARTON QR-1A &, Tc, Cs. fla, . BATCH . OXIDIZING, 23.60.65INTERDED U. Np. Pu, Am 14 DAVS REDUCINGUNCONSOLI- 1HYDRAZINE)DATED
REFERENCES: (11 ALTER. ET AI,. 181 111110-1WI-1-0431; AMES. ET AL., 1900, 180. 1881(PNL-3145, PNL-3145, PNL-39021.
12) BARNEY, 1982 (RHO-BW-ST.36P).
(31 BARNEY, ET AL.. 1083 (RHO43WI-TI-181.
14) BARNEY, 1984 ACS SYMPOSIUM SERIES, NO. 246).
6 j
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STRATIGRAPHIC- HORIZONS FOR WHICH SITE SORPTION.STUDIE8 HAVE-BEEN CONDUCTED
i KAXqFORD FoRmArIom
MA ~~~~~~~~RCOLD FQR"AnlOM
- - 2 .- .
MOUNTA11$
BASALT
PR[ UT RAPIDS EBR
& WANAI~~~~~~M ~ROZA MEMBERm
g~ ~~- w E wF~o
i IASJ~~~~~~r ~FRENC~iMAM £?INGS> ..... e
0
ROC~Y COULEE FLOW
COKA4ET FLW
flown
MC COY CAN5
YON FLW
- ~ ~ 2 -- l.-
WALT_:-::
*W SO .F'_.L::::Oi--W :
I
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SUMMARY OF SITE SYSTEM SORPTION RESULTS
*IN GENERAL, TESTED RADIONUCLIDES SORB WELLUNDER REDUCING CONDITIONS; EXCEPTIONS ARE I AND C
*FACTORS AFFECTING SORPTION/DESORPTION
(1) REDOX POTENTIALTc, U. Np, Pu ARE AFFECTED - MORE SORPTIONAT LOWEn OXIDATION STATE
(2) COMPLEXATION
Cl-, F , C3 2 , 1CO3 -, AND S042 HAVE EENTESTED. POSSIBLE COMPLEXES ARENp-CARBONATE, Pu-SULFATE
(3) IONIC STRENGTHISr, Co, Ra AFFECTED
(4) REVERSIBILITYMOST SORPTION/DESORPTION REACTIONSFOLLOW DIFFERENT PATHS (HYSTERESIS)
. I
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SOAPTiOtl/DESOIIPTIOtII YSTEIIESIS FOI NEPTUNIUM ONINTERRED (BARNEY, 184. ACS SYMPOSIUM SERIES No.' 240)MABTO t
-6.0
I
-6.2
E
44cm2
09
- 6.4
- 6.6
i
- 6.8
- 7.0 '-- 9 -8 - 7 - 6 -5.
tog C IMl
. ii I . I -
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60RPTION/DESOfPTIOfl tiYSTERESIS FOR UANIUM OtMABTON1 11TERBED (BABI4EY, 1004, ACs SYMPOSUM BERIE6 No. 246)
-7.0
URANIUM /ISOTHERM 60C/
-7.6
is DESOfPTION
-0.0 A
SORPTION
-~ 0 .5 l 7
lp C M)
I I
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I
SUMMARY (CONTINUED)
* COMPARISON OF FLOW TOP VERSUS BASALTSORPTION PROPERTIES
* SORPTION IS GENEfRALLY GREATERON FLOW TOP
* REACTIONS ARE GENERALLY FASTERFOR FLOW TOP
* DESORPTION IS LESS FOR FLOW TOP
* COMPARISON OF FLOW TOP VERSUS INTERQEDSORPTION PROPERTIES - IN GENERAL, SORPTION ISGREATEST ON MABTON INTERBED AND APPROXI-MATELY THE SAME FOR UMTANUM FLOW TOP ANDRATTLESNAKE RIDGE SANDSTONE.
PROBLEM: EXPERIMENTS NOT CONDUCTED ATSAME RADIONUCLIDE CONCENTRATIONSSO ISOTHERMS WERE EXTRAPOLATEDBEYOND THE CONCENTRATION RANGESFOR WHICH THEY WERE DERIVED.
I .
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-I -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SORPTION *g(tETICS FOR HIEPTUM4UM(OAMMlEY ET AL., 1003, SO-OWI-TI-100)
100
0
a'U
0coax
z
Wt 40
20
0-I-
I :,1i
0 1 2 a . 4
1.00 1t(bours)
I
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SORPTION (INETICS FOIl UANIUM(BARNEY ET AL. , 1004, SD-OWl-TI-1O )
100
80
e'l
VI
VI
tI
0 ts
00
40
'i
20
01 I 9so 0 1 2 4
LOU (ours)
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* COMPARISON OF NEPTUNIUM DESORPTION KINETICSBETWEEN FLOW TOP AND BASALT
(BARNEY ET AL., 1004, SD-OWI-TI-10)
4 0
.a 30 COHASSETT BASALT
M ?olt8 0 =1.lozx 1 O inolla00U;
wI20
UMTAHUM FLOW TOP
ok 80 _2,96X 10 13 paI/q<1~ ~ ~~ =2 I - 1, el0 I~~~~~
-1 ° 1 2 4 4
1.00 (hours)
I
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I.. I ...
LAB SORPTION STUDIES
*GEOMEDIA SAMPLES*COLLECTION - ID LKELY FLOW PATHS, CORE VS.OUTCROP? CORE PHOTOS, CORE EXAMINATION
* PREPARATION - SAMPLE DISAGGREGATONl. PARTICLESIZE, COMPOSITE SAMPLES
*CHARACTERIZATION - MINERALOGY, PHYSICAL ANDCHEMICAL CHARACTERISTICS (CEC, SURFACE AREA,PARTICLE SIZE DISTRIBUTION)
*RADIONUCLIDE SORPTION/DESORPTION* IEY. RADIONUCLIDES* BATCH AND COLUMN EXPERIMENTS YIELDING
ISOTHERMS AND BREAKTHROUGH CURVES*EVALUATE SORPTION AS A FUNCTION OF TIME,GROUNDWATER CHEMISTRY, SOLID: SOLUTION RATIO,COMPLEXANTS
.
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INFORMATION- USED 1T0 IDENTIFY ROUNDWATER FLOW ZON~FiS-/~~~~~~~~~~~~~~~
~~'Th Cm) MEUTRO(4~UMhN LOG DYNAMIC FLUID FLowu~Trm~-~LA~ ~iy- TEMPERATUm
FLOW
11 4~~~~~~~~~~~~~~RUWW1E
d~~~~~~~~OMLU
a.~~~~~~~~~~~~~~~~PIF
IF
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N./."
, 4611- , -. -.4.I
/17
k
- 4i,,�i �- I'-.
awa-
M;? WAVCH WTEUMMAD -o W
wAaa�DM �? P�1EST �os]WAAAMUM &66"r
~~LQW TOP ~.FLOW TO
a
'
m P- ia6m~
UP"P:R FVMHMSPRIW PLOW -,Ps
I
La~Wa dR64MMSPRu4Gs KOW TOP$
.z --
- iO~~~~~~~~~~~~~~~~~~~~~~~~~~~0: ~-W ,Xo
c=' CNT N VATG H ~ -- - --aa*~~~~~~~4 ~~~ ~ o
t1rlc
In m -
lo-co 10'a V ivAL9rO 104 WWY104 le W4 le 10 lad
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STRATIGRAPHIC HORIZONS FOR WHICH STE SORPTIONSTUDIES HAVE BEEN CONDUCTED ND ARE PLANNED
HANFORD ORIMAYCM
WA ~~~~~~RNGOWD FORMAT3OIL
MAOUHTI)4
0 ~~~~~~~PRI EXT RAPIDS VIR ::Co ~ ~ ~ ~ ~ ~ ~~RZ E"
~~ FRVCKA.lTT FLOW~
HALI 1 LT ___ C CYCANYON FLOW-
LE.NLV FLOW
I
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.. u
BOREHOLES FOR WHICH CORE IS AVAILABLE
i .
!
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PRELIMINARY LIST OF KEY RADIONUCLIDES FOR A NWRO
d (100 YEAR OLD CHLW OR SPENT FUEL)
RADIONUCLIDEELEMENT (PRIORITY 1)
*CAnRON ( 1 4 C)-*
IODINE (120 I):k
SELENIUM 7080
TECHNETIUM 0 0 Tc
NEPTUNIUM 2 3 7 Np
PLUTONIUM 2 3 0 pu 2 4 2 pu
TIN 1 2 0 8n
~)=B'PENT FUEL ONLY
IIiII
RADIONUCLIDEELE.MENT (PRIORITY 2)
STRONTIUM (9O8r)
CESIUM (13Co,137Cu)*
RADIUM (2 2 0 lit)*.
CURIUM 2 4 SCm246Cm 246cm
PROTACTINIUM 2
NIC KEL 6 DtjA3N.
URANIUM 2 3 8U 2 8 4 U236u
LEAD
ZIRCONIUM 0 3Zr
PALLADIUM t0 7 pd
THORIUM 2 2 OTh. 2 30 Tb. 2 3 2 Th
PLUTONIUM 2 3 8 PU2 4 0pu.24 t Pu
AMERICIUM 2 4 tAm 2 4 3 Am
~()=EXISTING DATA .8UPFICIENT.. l
9 6
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COLLOIDS IN Tj1E SITE SYSTEM
"RATIONALE - THE RETARDATION MECHANISM FOR COLLOIDS ISFILTRATION. FILTRTATION IS GEOMETRY (PORE SIZE) DEPENDENT,THEREFORE, COLLOID MIGRATION CANNOT BE EVALUATED USINGDISTURBED SYSTEMS (E.G., CORE SAMPLES) IN THE LAB BUTMUST BE EVALUATED UNDER FIELD CONDITIONS OVER LONGFLOW PATHS.
* NATURAL COLLOIDSQUANTITY AND PARTICLE SIZE IN NATURAL GROUNDWATERSMINERALOGICAL CHARACTERIZATIONREQUIREMENTS
(1) ACCESS TO GROUNDWATER - SURFACE BOREHOLE OR ES(2) LONG BOREHOLE-CLEANUP TIME - REMOVE CUTTINGS,
DRILLING FLUID, RESUSPENDED NATURAL COLLOIDS
* FIELD TRACER TESTSUSE PARTICULATE TRACERS OF VARYING SIZE
i
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FIELD STUDIES - NATURAL ADIONUCLIDE DISEQUILIBRIUM
*RECENTLY PROPOSED TECHNIQUE TO EVALUATE NATURALIADIONUCLIDE SORPTION - NEED TO EVALUATE APPLICABILITYIN BASALT SYSTEM.
.RATIONALE - IF THERE IS NO PARTITIONING OF ISOTOPES ANDSECULAR EQUILIBRIUM HAS BEEN REACIIED, ACTIVITY RATIOSOF ISOTOPES IN THE SAME DECAY CHAIN SOULD BE UNITY.TIE DEGREE OF DISEQUILIBRIUM EFLECTS PARTITIONING OF ISOTOPES.
* APROACH,
-SAMPLt- GROUNDWATER OF ITEREST
,ANALYZE FOR RADIONUCLIDES IN TE 2 3 0 U ANQ 2 3 2 Th.DECAYCHAIN82 3 OU< 2 3 4U2 -z230TIllG>22 2ga- 2 2 2 RUn21OPe 2 OBI 2 1Opo2 3 2 Thin' 2 2 Ona 2 2 Ti-, 2 2 4 1aE2 2 0Rn
*EVALUATE ACTIVITY RATIOS, DETERMINE RETARDATION FACTORS(DISTlIBUTION COEFFICIENTS)
o ADVANTAGES
*LARGE SCALE, NATURAL CONDITIONS
* PROULEMS*PARTITIONING NOT DUE. TO SORPTION. OPEN YSTFM (MIXING)
S *
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-
FIELD STUDIES TRACER TESTS
*APPROACH - MEASURE FIELD SORPTION CHARACTER-ISTICS OF SELECT LIST OF RADIONUCLIDES ANDEXTRAPOLATE INFORMATION TO OTHER RADIONUCLIDESUSING LAB SORPTION RESULTS.
ePOSSIBLE BOREHOLES - DC-7/8, DC-4/5, DC-16A? B, C,
*BENEFITS*DETERMINE SORPTION AT FIELD SCALE UNDERNATURAL CONDITIONS
-DEMONSTRATION TllAT TWE SYSTEM CAN RETARDRADIONUCLIDE MIGRATION
-VALIDATION OF SORPTION VALUES USED INPERFORMANCE ASSESSMENT MODELS
*PROB LEMS-LIMITED SET OF RADIONUCLIDES THAT CAN BE USED*COSTLY AND DIFFICULT TO CONDUCT
I I
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SUMMARY OF SITE SYSTEMRADIONUCLIDE TRANSPORT
SORPTION STUDIES HAVE BEEN CONDUCTED ON GEOMEDIAFROM FOUR GROUNDWATEII FLOW ZONES
THE BWIP HAS IDENTIFIED TIlE NEED FOR COMPREHENSIVESTUDIES ON GEOMEDIA FROM ADDITIONAL LIKELY GROUND-WATER FLOW PATHS (FLOW TOPS)
RATIONALE FOR SELECTING GEOMEpIA SAMPLES CONSISTSOF IDENTIFYING ZONES OF IIIGHIEST GROUNDWATER FLOW
LABORATORY SORPTION/DESORPTION STUDIES WILL BECONDUCTED UNDER APPROPRIATE, CONDITIONS
COLLOID MIGRATION STUDIES INVOLVE CHARACTERIZATION OFNATURAL COLLOIDS
FIELD TESTS ARE UNDER CONSIDERATION
I~~~~~~ . .