Assessment of Data Needs for Vadose Zone Hydraulic

SGW-65295-VARevision 0

Assessment of Data Needs for Vadose ZoneHydraulic Properties Database

Prepared for the U.S. Department of EnergyAssistant Secretary for Environmental Management

Contractor for the U.S. Department of Energyunder Contract DE-AC06-08RL14788

P.O. Box 1600 Richland, Washington 99352

Approved for Public Release; Further Dissemination Unlimited

CH2MHILL Plateau Remediation Company

SGW-65295-VA Revision 0

Assessment of Data Needs for Vadose Zone HydraulicProperties Database

Date PublishedAugust 2020

To be Presented atAssessment of Data Needs for Vadose Zone Hydraulic Properties Database

Department of Energy, Richland OfficeRichland, WA

05/28/2020

Prepared for the U.S. Department of EnergyAssistant Secretary for Environmental Management

Contractor for the U.S. Department of Energyunder Contract DE-AC06-08RL14788

P.O. Box 1600 Richland, Washington 99352

Copyright License By acceptance of this article, the publisher and/or recipient acknowledges the U.S. Government's right to retain a non exclusive, royalty-free licensein and to any copyright covering this paper.

Release Approval Date

Approved for Public Release; Further Dissemination Unlimited

By Lynn M. Ayers at 1:47 pm, Aug 19, 2020


[APPROVED l

SGW-65295-VA Revision 0

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1

SGW-65295-VA, Revision 0

Assessment of Data Needs for Vadose Zone Hydraulic Properties Database

Presented by: Sunil Mehta and Raz Khaleel, INTERA Inc.Presented to: Department of Energy, Richland Office (DOE-RL)Date: May 28, 2020

Picture Goes Here


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2


Terms

• CCUg: Cold Creek unit gravel-dominated unit

• CCUz: Cold Creek unit silt-dominated unit

• CERCLA: Comprehensive Environmental Response, Compensation and Liability Act

• CIE: Cumulative Impact Evaluation

• DQO: Data Quality Objectives

• Hf2: Hanford formation unit 2

• HF3: Hanford formation unit 3

• HSU: Hydrostratigraphic Unit

• EHM: Equivalent Homogeneous Media

• LLWMA: Low-level burial ground waste management area

• RCRA: Resource Conservation and Recovery Act

• SAP: Sampling and Analysis Plan

• VZ: Vadose Zone


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Why Do We Need A Credible Hydraulic Properties Database?

• Site-specific CERCLA and RCRA investigations

• Performance Assessments

• Cumulative Impacts Analysis

• Composite Analysis


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5


Modeling Approaches to Represent Heterogeneity

Anisotropic Equivalent Homogeneous Medium (EHM) model for each

HSU

Small, core-scale Variability Explicitly

Considered for each Hydrostratigraphic unit

(HSU)

Source: Yeh et ai , 2015, flo w Through Hii.t.'7'0gtm"DllS G«Jf.ogic .\l"dia .

Figure 1. Heterogeneous Geologic Outcrop in the 200 East Area

IA~ , ~' II ■ ,. ■ 111111 n,1rr

••• ••••••••••••••••••••••• ········•• 111 •■••········· ···• 11111,;1 ············ ·· ·~········ · ······· •••••••••••••••••••••••••••••• ····~~·················· ······· •••••••••••••••••••••••••••••• ~ - ■■■••■~~-n~ ■■•■■•■■•■■■•■•■■ ■ 111 ••••an i.·, ■ ~ 1e••••••••••••■■■•

■ 11 1:1 a• •••■• ff•ic:m ■■ •■■■■•••••■•■ : • • • • • ••■w~•~•~•■••••••••••••• 11 ■ 11 II !:.~ ■■ IIIIC'I :r: .l L!mLJ;i; . . . .......... ,

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EHM Modeling Approach to Represent Heterogeneity

An EHM .model integrates ...

Core scalle measurements

"' Upscaling1

-Macroscopic anisotropy


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Concept of Moisture-Dependent Anisotropy

Media heterogeneity (and the resulting variability in unsaturated K) induces variable moisture-dependent anisotropy in the field

1'.,IDA. ' \ J \ , \ I'-. \ I \ I

\ , , ' ., ' .,.. ~--

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So11ree: Yeh et al.., 20 l 5,""'Flo!.1i''il"hr~ Het ero.ge:neom1Geokt~c Mediil .. "''

Note, The: E!Dgl ~ofthMed ,an-ow; deillo t e11JJ1g11illlEiofUll!ia.turated h}'dralific ,concfloot il.iity m e•horiz.ont aldirec -0111 (K1J1:md:ill e,;,•m iaiidir,ectio111(K ) ,at e pressm-e head ,oft hl! gi:11.ren !ocatkm..


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Upscaling of Hydraulic Properties for EHM Models for Hf2 Sand Unit in 200 East Area

This approach has undergone numerous peer reviews and regulatory reviews and has been accepted

i 10 -.I )<

! - X (a) Sand-Dominated (a) Sand-Dominated

1.E+OS ~

X -Low Anisot ropy

X

·i X ••••• Intermediat e Anisotropy

i - x '0 ,, x-"' ., :r ·- )( -., 5 ·-- X X -..., "'

1.E+04 r-

- - - High Anisotropy --- ------------- -~ 1.E-1-03 - ---0 --... -... -~ •- .... X - :t X -

Cl. .. .. . )( - X -

• ... )< • 1< t x -- ... . • * x--· .. .... ,..

0 .1 )( ■ • Ill>- Ii"'

0 0.1 0.2 0 .3 0.4 0.5 0.6 0.7 0 .8 0.9 l

Effective Saturatio n

0 ,,, "'

,,, ·c ,,, <( 1.E+02 r-

, --------, __ ,.. ____ __ , --------------, ---------, ------· ---

1.E+01 I --r

1.E+OO

,,, I I I

0 2 4 6 8 10 Note: The symbols represent data for the 44 samples and the solid curve is the effective retention curve. Pressure Head (-m)


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Uncertainty in Vadose Zone Hydraulic Properties and Propagating Uncertainty in System-Scale Models

1.00E-01

1.00E-02

~ l.OOE-03 .... E. > 1.00E-04 -s ·y 1.00E-05

"' !i 1.00E-06 V u

~ 1.00E-07 -6 > ::c a: 1.00E-08

~ 1.00E-09

j 1.00E-10 ::,

1.00E-11 L LOOH, 100

Matric Pot ent ial (-an)

1000

~ 1 -~ ·B ::, .., C 0 u .!:! "'S l? .., >

:i:: .., QI

i! ~ :JI C ::,

i\la!Iic Polen rial for H2 Unit. Red line indicates the Composite rune US<'cl in the Base Case.

H2 Unit

LOO E-01

1.00E-02

1.00E-03

l .OOE-04

l .OOE-05

l .OOE-06

l .OOE-07

l .OOE-08

l .OOE-09

1.00E-10

1.00E-11

1.00E•12 10 100 1000

Matric Potential (cm)

10000

10000

C 0.9

0 -~ 0.8 H ;:;_

0.7 C 0

~ 0.6 D ·s

0.5 j5 ?;' 0.4 .. .. 1 0.3

a 0.2

0.1

0 LE-04

0 .4

'o" t 0.35

~ 0 0.3 u

1 [! 0.25

~ e .fl C 0

0.2

U 0. 15 QI

5 t: ·o ~

0.1

~ 0.05

0

0 .1

Fitted Log-1 -ormal Disni.butioo to the Saturated Hydraulic Condurti,ity Dataset ·sed fol' H2 ·nit.

' • Data I I _.. ,,..

I .... ... --Log Normal Fit .A

I I &~

,,,.. I L I I _ '";I' I I ~ I I I r I Ll ~· -.--r- >--

1.E-03 LE-02 LE-01

K_sat (cm/s)

H2 Unit

10 100 1000 10000

Matric Potentia l (cm)


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Overview of Currently Used Database of Vadose Zone Hydraulic Properties

• CP-63883 provides the latest available internally consistent database of VZ hydraulic properties.

• Compilation based on laboratory measurements of hydraulic properties over past three decades.

• Not all laboratory data sets used due to perceived quality issues.

• The relative amounts of gravel, sand, and mud (silt and clay) impact the hydraulic property of a bulk sediment sample in a fundamental manner.

• Natural variability exists in gravel, sand, and mud content. It is therefore important to understand and quantify this spatial variability and uncertainty in VZ parameters for each HSU.

CP-63883 Revision 0

Vadose Zone Flow and Transport Parameters Data Package for the Hanford Site Composite Analysis

Document Type: DP

R. Khaleel INTERA. Inc.

Program/Project: EP&SP

Oat• P\lbish~ April 2020

Prepared for the U.S. Department of Energy Assistant Secretaiy for Environmental Management

CH2MHILL Plate.au Remediation Company P.O. Box 1600 Riehl.and, Washington 99352

Oat•


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Hydraulic Properties Sediment Sampling Sites –Part 1 of 2

12 sampling locations18 sampling locations

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-·-·-·-·-·-·-·- ·-·-·-·-·-·-·-, ! :29'9,ll~-38 • j

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ll ---,

.·, ~ ~ ~ .. 1H,W1'5,21 'I' 2H,W15,.216\ , ·o.t

299-WiS.:!4.I Z!lt.W18-2.ul, •1 ~W,ii-:.i. ,7 ' • q

DH17-l!2 • .... ,-. ·-•-·•- .,_,...,,. ...

... ... ..,,,. B '

l-.!!! If ,.

r· I C1115U

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: / 1!99-EU-23-, ' ' 1P9.a:s_.,~ : ' 4tM5-HB : '

11111-35"61 A

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' . • Borehole

Facl•ty I :,,.f· : ___ ,._, 1,_ l! _~!!~~~~■- lli -• l - •_!9J.-f,i.~5.f? ,. _ ■ ~a, -.•- ■-•• • -•-• -•---_ -•-• TR · EE -I L. ~j I 1111er Central Plate.au

• 0 0.5 mi

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Hydraulic Properties Sediment Sampling Sites –Part 2 of 2

River Corridor Samples used for Gravel-Dominated Units in 200 East Area

12 sampling locations

06, Mi,__ _ ,as, w CE200 :..j. C6208

'---

1991-82-U

I ' 199s84 I 1·

■

,-.

99-0S.-1'4

'1 ' I

• I I ' i.. _ ___ _ ___ J

199'-FS-43 B, ,._

' I 199-FS.St

I

I

I _ .. _ ... -- - .. -.- - ... - ,

• Borehole Facility

C~:.:: Fo mer Operational Boon r; o 1 m·

I 0

I 2km

N

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Assessment of 200 East Area Parameters

= More samples needed to get representative dataset for EHM modeling

Based on 100 Area samples

HSI:

BackfiJ]

Eoliians:wd

--c Hfi)

Hf2 ' "'( m~~

~

t ....... san~

\ '~cug) X:Rwie)

\' Ringold V.'e:r llll '

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Table 12. Bff,eotive Soil Moisture Ret,e111tion Parameter Estimates for the 200 East .Area Hydrostratig1ra:phic Units

~umber Gf 9s~ 8re a. e Ile

Sample s• Data Sourc,e s (cm3/cm ) (cm 3/cm3) (11cm ) (-)

25 RPP-20621 , PNNL-22886 0.1 -4 0 .0038 0 .08859 1.2 l

L WHC-EP-0883 0.46" 08 0 .. 04046 0 .] 04 35 1.3399

25 RPP-20621 , PNNL- 2886 0.1 -4 0 .0038 0.08859 1.2 l

4-4 RPP-2062] 0.3838 0 .0290 0 .06.419 l.169

25 RPP-20621 , PNNL-22886 0 .17-4 0 .0038 0 .08859 1.2 1

1] WHC-EP-0883 , Khalee] et al (l 995) , 0.39·94 0 .. 05421 0 .00633 1.830 PNNL-2 846 , WHC-EP- 0645

i!>Son and Lu sit,e Zhang and Khalee] (20 IO) 0.3001 (}.0393 0 .0482 1.925 unit E samplesb

25 RPP-20621 , PNNL-22886 0.1 4 (}.0038 0 .08859 1.271

25 RPP-20621 , PNNL-22886 0.1 4 0 .0038 0 .08859 1.2 1

1] WHC-EP-0883 , Khaleel et al (199'5) 0.3994 0.05421 0 .00633 1.830 PNNL-2 846, W HC-EP- 0645

25 RPP-20621 , PNNL-22886 o.r 4 (}.0038 0 .08859 1.271


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Assessment of 200 West Area Parameters

= More samples needed to get representative dataset for EHM modeling

Table 14. Effective s0·1 Mlo·stur,e Ret,e111t ion Par:ameter Estimates for t:he 200 W,estArea Hyd'rostirat:igraphic Units

. ·umbei· of ilse a~e C1e lie

HSU Sa m~ sa Data So,nrce,; , cm'3/cm3} , cm 3/cm3) {11cm) (-)

BacJ::fi:U / n ~ WCH-464, WH C-EP-0883 , WHC-EP-0645 0.19 1 00153 0 .018 ' 1.3 83

Ha11fordformat io11 unit 1 I H WCH-464 WHC-EP-0883 , WHC-EP-0645 0 .1917 O.o153 O.OI87 1.3783 \

Ha11foroformatio11 unit 2 I u o \ WGH-464, \\ HC-EP -0883 0.4009 0 .0428 0 .0106 1.6693

Ha11ford format io11 unit 3 H WCH-464 WHC-EP-0883 , WHC-EP-0645 0 .1917 O.o153 O.OI87 1.3783

Cold Ct·eek u:u.iit silt H \VHC-EP -0883, Khalee et at (1 9'95) , PNNL -27846 WHC-EP -0645 0.3994 0.0542 0.00633 1.830

Cold Creek un.iit caliche 8 WHC-EP -0883 , Khaleeletal (1 995) 0 .3236 0 .0639 0.007925 L56421

Rv.ie ]O \VHC-EP -0883 0 .17056 0.0 1666 0.02420 1.454662

Rtf 6 I PNNL-27846 , Khaleel et al (1995) , WHG-EP-0883 0 .3098 0.047133 0.04559 1.5230

R.ingo,ld lowe,r murl! \ H I WHC-EP -0883, Khaleelet at (1 995) , PNNL-27846 WHC-BP-0645 0.3994 0.0542 0.00633 1.830

Rwia \. ]O / WHC-EP-0883 0 .17056 0.0 1666 0 .. 024207 1.454662

-

0


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Presentation Outline on VZ Hydraulic Properties

• Overview of EHM modeling approach• Overview of current hydraulic properties database• Initial assessment of hydraulic properties data gaps• Planned hydraulic properties evaluation in recently

completed SAPs• Recommendations for hydraulic properties evaluation for

ongoing SAPs (opportunistic sampling) • Planned activities for FY 21• Summary


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Areas where Hydraulic Property Data Gaps Exist Based on Current Knowledge and Future Work

= Areas with Known Data GapsNeeds based on CERCLA/RCRA/PA at:Tank Farms, BC cribs, LLWMAs (among other sites)

..:

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• I • '291~ u.z,11

ll ---,

• Borehole

Facl•ty L. ~j I 1111er Central Plate.au

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Sampling Approach, Laboratory Experiments, and Hydraulic Properties Parameter Estimation

Sampling & Archiving:– Intact split spoons (Lexan Liners)

– Collect samples and archive them. Provides flexibility to perform experiments when funding is available.

– Follow procedures documented in 200-DV-1 SAP Addendum

Laboratory Analysis:– Measure Moisture content as a function of Pressure Head

– Measure Unsaturated hydraulic conductivity as a function of Pressure Head

– Measure Saturated hydraulic conductivity

– Grain size distribution, gravel content, bulk density, and porosity

Parameter Estimation:– Effective saturated and residual moisture content

– van Genuchten parameters (effective)

– Effective saturated hydraulic conductivity (directional dependence)

– Pore-connectivity tortuosity (directional dependence)


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Planned Hydraulic Properties Evaluation at WMA C (SAP: DOE/RL-2019-31)

DOE/RL-2019-31 Draft A

SAMPLING AND ANALYSIS PLAN FOR CHARACTERIZATION OF GROUNDWATER MONITORING WELLS 299-E27-27, 299-E27-40 AND 699-43-43B

299-E27-4 fWMA-C

299-E27-40~ 2

~ Non-Compliant Decommissione<i Monitoring \Nells

• Planned Groundwater Monitoring VI/ells

⇒ Groundwater Flow Direction

D 200 East Area

Groundwater Interest Area Bounary

Faci lity

~ Waste Sttes

Roads 300 6)() m

1,000 2,000 n CHSGW20180514

>

Figure 1-2. Location Map of WMA C, 216-B-3 Pond, and Planned Groundwater Monitoring Wells 299-E27-40, 299-E27-27, and 699-43-43B in the 200 East Area


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Planned Sampling for Hydraulic Properties at WMA C (299-E-27-40)

7 Samples for VZ Hydraulic Properties

Sampling depths (ft)

WMA-C Well 299-E27 -40

A'!"ilor SpooCr• I Depth Below

Gir'Gund Sur,ace Cbgs]

Well l99·EZ7-4 Soil Geo1PChnical Sedimeat eut,on aml

Cheml.,a l Sol l Property Waler Seive Moisture Gamma Ano l• s i$ Anoly,is Al1• lysls Analr,isis L<lgglng Log,ging Ground So-face

ml,g• ~ !:gs

- 10

5-- w

- 40

1s -- eo

- 60 20 -

-70

25 - - 80

- 90

- 125

- 150 EO -

- 17S

e;o - - 200

70 -- 225

~ 250

ao -- 275

eo - - aco

100 - - 325

- ~50 110 -

-375

I I .-I ■ -

1/ i,' , Petrn111cnt C~si ng ,, ◄ , - (4-in. stli """ , l..,I)

• i' , -~ - 1Ben10n t 1:1 SE-al ,

,' /

--: ..

-v' i,' -, .. ,

, -, = , / Benl onite Pdlet Seal

""I;; _, -Waler TaHe 276 ~ • -

~~ - ...... Sc::reen

_. !!!j.::- -Fili..r Pa<k S"nd

.., i>Ul"fl' TOUil Oepct,, ~11 n bg; -

~

- - ~- -~-

~

~

;::

-.. -= .. .. -= ...

- ii

i ~ - - .... ....

·.-.. · .. -.. -.. -.. , ·

Total Oep,th. 323 It bjjs

Sand to Gravell~ Sand

Sanc!f G rav el

Sand to Gra-. elly Sand

Sandy Gravel

Sa nd

Silt; s~nrj Sand

Grawel to

s~ n dy Gr~vcl

Basal t

Hanford fa rmot pn unit 3

- T77?1 -

- $<>t i AM IY>i&' Anb .... s,.,moo. ME<a!, Merwr,. TOO!I Cyonkl•. Uranium "°~""°"""'"" Bli>he•wle. pH. Ammonia. 'J<llOllla Qaanlo A ~818 (I. 1.2-Tnohbroelhyfene. 4-1,!•thfl-2-pon ..... ne. m-~ ne. 0-)(~kinD. yl;. nD,. XylPnlolli, l-but=inanQ, /ta;tong), ~ml-Vol =a.llikl Org;ani: Anat,sk; (Trb.i1rl phosph:1IP), ot;al Orp;,nbC.rooJl, Ft;adonuclkt"' (Am,Qri:ium-24 ~. Antlrn:my •2!1 . C;,rbon 14 , CGoSfum 137, Cob;,tl e.o, CurUm-244, -Eurcpum 152, - 154, -155,, Iod ine 129, Nq:,i1.11ium2l7, Nickel 63, Ph.ionium 238., F'lubiium ZJBl24[). :Plul:on iJm 241, Sl!~nl..lm 79, stn:mi'-Jm 9:1, Technetium 99, Thi:JrR.l m 22B, .2,D, ...232, Triliiir\ Urari ium2J3fl34 , Ura'llum 2J&J23ii, -238.

• PM~ Watel': Aniong,, Mei.11"£. Free- Cy.;:m ide. Techni,!ium-'9!}. pH. Specific Ccmduc ~ nC2' • w.ate-r /J.~&l)'!i-ts.": .A.nh"!i, ICP Metals., Urariu rwi, Fr~ Cya ri lc:I @.. pH , Al~alnl'f , T Uurn.99, lcldhei:,129, SeSEnlurn~79 □ Pilly•loal Pfo?fflloo; • t 0~1lt\j Une..uro...i lr/dra•I• condwr,., , "'"''''"" h)<lraYlooondo01"'1y. portlclooteo di&oribuli>n, rrolr.nn oomen, b ~..,.It)> , 1o<al po,ooty •1C>o ft tgo; Molr.un 00ffl<lnt

Aqul~f' ScdmerrtGr.:ibS.1mple5: 01;1,rtid ,:; jz,o di&1rb1Jil,;i n. ~0190135_ t

~ 100- 102.5

13,0- 132.5

160- 162.5

190- 192.5

__ 42.5-245

_ 55 -257 _5

IILL ation Company

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Planned Sampling for Hydraulic Properties at WMA A-AX (SAP: RPP-PLAN-63020)

RPP-PLAN-63020 Revision 0

Sampling and Analysis Plan for WMA A-AX Focus Area 2 (Southwestern Area of A Farm)

e f2.$-20

/ +

30 60 90 120 Feel I I I I

10 20 30 Meters

fESl_201~_0003

Figure 1-1. Study Bouucla1·y for \Vl\'1.A A-AX Focus Area 2

DecommiSSJOr.d Dry~II

CH2MHILL

e 1:.2s-93

1r:::::} r,ni,; Fa,m Feneellne - -Ing

Assumed Leal<e,

Tani< Pipeline

~ Dlv•rslonNatv'l(I Bo•

~ Stngle-Shell Tank

c::::J 200-1::-286 Dlleh

D e""°" ~--_-~ Conc,ete Colar

"299-' .... !1Prnfi10mitted


21


Planned Sampling for Hydraulic Properties at WMA A-AX (D0012)

5 to 8 Samples for VZ Hydraulic Properties

Figure 5-1. Visual Rep1·5entation of Anticipated Sampling Depdts at tl1e Large Diameter Borehole

Siratig raphic Column from 2!111--E25-4G

0

~ 12

· ~(Sh

Hanford fonnation unit 2: 100 • 272 fl bgs

Colloclllcl In tho fljjld

Lab Direction

lo•• p(h)

.._ I.MaD

i<

l .._

., &Mac "'

-..... s-

• lntaQ Co-re Samples in Le~an L.iners Shipped to PNNL.

i :s ::

11

" -~ :;

.,

.! =

;;;

! " ;

i .,

- Intact Dore Samples in Lexan Liners for Slandard Analysasb

XII)-~~~

ft bgs - reet below growld surface

Now: Typically Iner E Yilll be used for standard analyses. The laboratory may select an allemate liner based on obsllMltlons ol sorl Cl1aracterlstlcs.

a . Each intact co,re sample in1erval is 5 ft in lenglll and produces five, 1-fl intact core ~amples in Lexan liners. b. staMard analyse$ are iclenli ,ed in Table !>-2.

c. Soi l recovered in 1tle $hoe wil not be collected es p,;,rt of the earn pie. Th~ ,;.oil will be discsrded in the field.

Intad c.ore samples from D00 12 will be collected from within the following major lit.hofogic units present in the vadose zone bene.ath Focu.s Area 2:

• Hanford formation unit 1 • Hanford formation unit 2 • Cold Creek unit silt • Cold Creek unit gravels ..

Additional intact core samples v.'111 be collected from depths with apparent unique physical prnperties (e.g., zones with calcium carbonate cementation) .


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22


Additional Planned Sampling for Hydraulic Properties at WMA C and A/AX (SAP: DOE/RL-2020-10)

DOE/RL-2020-10, Sampling and Analysis Plan for Drilling Interim Remedial Action Wells in the 200-BP-5 and 200-PO-1 Groundwater Operable Units

1/IJaste Management Area C and A..AX

planned Rel&ae.es

u,ned Leaky USTs

1mion8ox

uid Waste Discharge Ctib

ndoned 284E Powedioose Ditch

-- M::ijorConlour 1.Smeter lnterva1

Minor Conloor O.J meter Interval

Contour Oepreswn

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23


Additional Sampling Planned for Hydraulic Properties at WMA C and A/AX (SAP: DOE/RL-2020-10)



CCUz

Hf2

Sample Collection Method

Table 3-2. Sample Interval Design forWell 299-E27-157

Samplinz Durinz Drillin1

Soil Sample • Aquifer Sediment Groundwater (Depth in Feet Samples b (Depth in Samples' (Depth in Below Ground Feet Below Ground Feet Below \Vater

Surface) Surface) Table)

/ 39-41.5d~ 10 10

Post Development Sample

Groundwater Samples (Pump Location in Feet

Above the Bottom of Well Screen)

TBD

Table 3-1 Sample Interval Design for Well 299-E25-240

Sample Soil Samples •

Collection (Depth in Feet Below Method Ground.Surface)

Sampling During Drilling

Aquifer Sediment Samples b (Depth in Feet Below Water

Table)

Groundwater Samples ' (Depth in Feet Below Water

Table)

Grab/

Split spoon/ Pump

1 76.5-79d r---~ "'~{\ ---+ ---2~0~ __ 1_ .... 124-126.5 ) 45 j U ~

____ 7 40-42.5 ........

..--~ j 76.5-79 ~ Grab/ I 124:126 5_ I}

10

30

45

55

65

10

20

30

40

45

55

65

Split 186.) -188.) •

spoon/ 09-2 ~

186.5-188.5 ., 40

09-2 11.✓ 50

C35-237.5d--... '

237.5-240d ✓ ------Pump ( 2.45-247.5,

253.5-256 [\

Number of 7 - 3 --------- 5 1 I ~ 262.5-265 ~ I/ 1--s_am_p_le_s_L._ _______ +-----------'-------------="'"-.....!c_---------... ..i..,,.,..... Number of -

Number of split spoon samples

umber of grab samples

Number of water samples

Number of soil samples

Approximate number of quality control samples

7

3

6

5

As specified in Table 2-4.

a. Opportunistic split spoon collected/hydraulic soil property analysis require bulk density, grain size distribution, matric potential using filter paper, total porosity, unsaturated hydraulic conductivity and saturated hydraulic conductivity.

b. Well design grab sample/aquifer grain size analysis.

c. '.Veil design groundwater analysis for well screen placement.

d. Opportunistic soil samples for evaluation of anions.

TBD = To be determined. r

7 Samples

Number of split spoons samples

Number of grab samples

Number of water samples

Approximate Number ofField Quality Control

5 7

7

5

8

As specified in Table 2.4.

a, Opportunistic split spoon collected/hydraulic soil property analysis require bulk de1 distribution, matric potential using filter paper, total porosity, unsaturated hydraulic saturated hydraulic conductivity.

b. Well design grab sample/aquifer grain size analysis.

c. Well design groundwater analysis for well screen placement.

TBD = To be determined.


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24


Assessment of Hydraulic Properties Data at WMA C and WMA A/AX

• Based on the sampling plans described in the current SAPs for boreholes around WMA C and A/AX, we will be analyzing about 27 to 30 samples for hydraulic properties from various depths.

• This is deemed adequate towards development of representative data set for this area.

• Will be able to estimate the variability and fit probability distribution function for uncertainty analyses.


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25


Opportunistic Sampling for SAPs Under Development

Based on FY2021 Drilling Plans


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26


3 wells at LLWMA-1:299-E33-276299-E33-272299-E28-35

LLWMA-1 Integration Summary Sheet

LLWMA-1 Opportunistic Sampling Agreements

Meeting Minutes Materials

Data Gap identified:Collect samples from all three boreholes

Opportunistic Sampling at LLWMA-1

218-E-10

EE


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27


N S

299-E33-272 is the well where we planned to collect vadose zone hydraulic properties split spoon samples. Specifically targeting the sandy Cold Creek unit and a silty zone in the Hf2.

Current Plans at LLWMA-1

See Next Slide for Planned Sampling

Opportunistic Sampling at LLWMA-1: Continued

650.0

625.0

600.0

575.0

400.0

375.0

350.0

325.0

299-E33-272 D0059

Groun;erW◄el-11--------o rrr-------Pr-op-o-se..,a * ";~w• Iii

ROCSAN GRVL PRCNT

0.00 100

ROCSAN MU D PRCNT 0.00 100

ROCSAN SND PRCNT 0 00 100

=-5-...... -e-l Ht3:194 -~-"'"""""'"' CCU:206

- 1::;;;;..~ ;;g- -1 CCUg 228

- + ---,--! Basalt:292

- ~..i.11.1.;;;;;;,--1 Basalt305


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28


N S

Recommendation:• Collect ~14 samples from each borehole as shown; focus on

CCUz and CCUg• ~42 samples from all three boreholes

H1

H2

H3CCUzCCUg

Data Gap identified:Collect samples from all three boreholes

299-E33-28 A4852 IN-USE

Groundwater Well

• ROCSAN GRVL PRCNT

0 00 100

ROCSAN MUD PRCNT 0 00 100

•

• • • • • •

299-E33-276 D0061 __, * ...,,w,1

0 a

i ~ r i l :~ J

75

100

125

150

17i:;

~ ~ r 2001

-

299-E33-10 A6853 IN-U SE

Groundwater Well

• 0 a

Driller's Lo

28

~

,

l '

I r Jgn5


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29


Opportunistic Sampling at 216-A-29

6 wells at 216-A-29:PW1-PW6

216-A-29 Integration Summary Sheet

216-A-29 Opportunistic Sampling Agreements


Data Gap identified


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30


NW SE

Recommendations:

• Collect additional samples from all six 216-A-29 boreholes

• Target Hf2, Hf3, CCUz, and CCUg

• Take at least two samples per HSU leading to ~8 samples per borehole

• ~48 samples total

Additional Sampling

Opportunistic Sampling at 216-A-29: Continued

650.0

600.0

575.0

400.0

375.0

350.0

325.0

275.0

250.0

216-A-29- P'W-1 D0053

-*•o■rint-:-•--------441 rn----P-,o-po-se..,d R~ nitoiing\.\lell

0 ..

f-frltl

~---.:--1 H/3189

,1-~ a,-s--1 CCU:210 .....J.J=----- ~ :=-cc~ ~-1 CCUg220

• CH2MHILL Plateau Remediation Company

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31


Opportunistic Sampling at 216-B-3

4 wells at 216-B-3:PW-1, PW-2, PW-3, PW-4

216-B-3 Integration Summary Sheet


216-8-3-2 21&-8-3-3

200 400

0 40 80 120 160 200 m


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32


Recommendations:

• Target Hf3, CCUg, Rwia, and Ringold Mud units

• Collect at least 2 samples for each target unit at each of the four boreholes

• ~32 samples

Opportunistic Sampling at 216-B-3: Continued

575.0

450.0

425.0

325.0

300.0

275.0

216-B-3 F\\1-2 699-43-44 216-B-3 F\\1-3 RCRA39 B8758 RCRA40

P1oposed Rl* nil,.01-ing_W_•_ll-+--------l54 ---------0-EG.-c,~~n:~~!◄~t-?i--V ____ ., 4

9 ----P-1op_o_,e..,d R* niloiingWell

E

0

"

L. ·~-~~~h'.o'.e~~o~g~ ,'. :~L F

['fT: ··,.~,,,~, ·,~,.·.•·••?,·•, :,,..:. ~.:..;;.

0

"

Rwia173 WT181

Basalt232

Basalt:271 s]


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33


6 wells at 216-A-37-1 (The integration summary only references three wells; PW-4, PW-5 and PW-6 were very recently added to the line-up)

216-A-37-1 Integration Summary Sheet


Opportunistic Sampling Near 216-A-37-1


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34


NW SE

Recommendations:• Proposed 9 samples for PW-1 are adequate• Target Hf2, Hf3, CCU and CCUg

Opportunistic Sampling Near 216-A-37-1: Continued

675.0

650.0

625.0

600.0

575.0

550.0

525.0

500.0

475.0

450.0

425.0

400.0

375.0

350.0

325.0

300.0

275.0

225.0

216-A-37-1 PW-4 299-E25-17 216-A-37-1 PW-1 216-A-37-1 PW-5 299-E25-19 RCRA57 A6031 RCRA35 RCRA58 A4765

P1oposed R~ nit.,o,f-in-gW-•I_I --f-- ,n-----------<G►•ou~:;,W4eo-ll-------~ ,n-------P•-op_o_, •.,d R~ nit•m-ing_W_•ll------4 ,n-----P•-op-o,_•..,d R~ nit"'m-ing_W_•_" ___ ----4m---------<G►•ou~:!,well

0

" 0

" ROCSAN GRVL PRCNT

0 00 100

ROCSAN MUD PRCNT

0 00 100

0

"

25

50

75

100

125

0

"

50

] 5

100

125 §II~ Hf3145

175

200 _ __ eeYJ2fa ,!_CJ

WT280 Rlm:293 Rwia:305

0

"

0

ROCSAN GRVL PRCNT

0.00 100

ROCSAN MUD PRCNT

0 00 100


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35


• 1 replacement RCRA monitoring well planned at B/BX/BY Tank Farm

• 6 boreholes planned at wells at 216-B-63

Recommendation:• Target 5 boreholes near B-

Farm (1 for B/BX/BY Tank Farm + 4 nearby planned boreholes for 216-B-63)

• Collect samples at high vertical resolution

• ~40 samples

Opportunistic Sampling South of B-Farm


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36


200 West

S-10 SAP

200 West Burial

Ground SAP

Tank Farm SAP Recommendation:

• Target 2 to 3 boreholes per SAP area

• Collect samples at high vertical resolution

• ~40 samples per SAP area

Hydraulic properties for S and SX Tank Farms need to be added to the SAP

Opportunistic Sampling in 200-West Area: Three SAPs

2MHILL n CH diation Compa Y Plateau Reme aJacobscompa11y

37


Presentation Outline on VZ Hydraulic Properties

• Overview of EHM modeling approach• Overview of current hydraulic properties database• Initial assessment of hydraulic properties data gaps• Planned hydraulic properties evaluation in recently

completed SAPs• Recommendations for hydraulic properties evaluation for

ongoing SAPs (opportunistic sampling) • Planned activities for FY 21• Summary


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38


FY 21 Plans as Part of CIE Project Execution

Vadose Zone Hydraulic Properties Evaluation for FY 21

Assess Data Gaps in Hydraulic Properties for VZ Assess data gaps spatially and by each HSU in a more rigorous manner

Update VZ Parameter Data Package with recommendations to maintain site-wide hydraulic

properties database

Develop recommendations and update the VZ Flow and Transport Parameters Data Package for the Hanford Site Composite Analysis.

Perform DQOPerform DQO to formalize the sampling approach per the recommendations of the data package that can be used by all the future SAPs

Complete SAPStandardize data needs, sampling approaches, and testing methodsGet concurrence from DOE and regulators.


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39


Summary of Recommended Sampling for VZ Hydraulic Properties: To Support FY 20 and FY 21 Drilling Campaigns

Locations Number of Samples Already Planned/RecommendedWMA C 14 Seven samples each at 299-E27-40 and 299-E27-157

WMA A/AX 13 to 16 5 to 8 samples at D0012; 8 samples at 299-E25-240

LLWMA-1 42 Target 14 samples from each of the three boreholes

216-A-29 48 Target 8 samples from each of the six boreholes

216-B-3 32 Target 8 samples from each of the four boreholes

216-A-37-1 9 Target one borehole (PW-1)

B-Farm 40 Target one borehole for B/BX/BY Tank Farm + 4 nearby boreholes for 216-B-63

200 West LLBG 40 Focus around Trench 31 and 34

200 West Tank Farms 40 T/TX/TY and U Tank Farm

S/SX Tank Farm 20 to 25 Include as part of 200 West Tank Farm SAP

200 West S-10 40 Focus on spatial coverage


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Documents

Assessment of Data Needs for Vadose Zone Hydraulic