Michael W. Cline

Richland Operations OfficeP.O. Box 550Richland, Washington 99352

Office of River ProtectionP.O. Box 450Richland, Washington 99352

U.S. Department of EnergyHanford Site

January 27, 202121-SGD-000361

Mr. David Bowen, Program ManagerNuclear Waste ProgramWashington State Department of Ecology3100 Port of Benton BoulevardRichland, Washington 99354

Dr. Laura C. Buelow, Project ManagerSuperfund and Emergency Management Division Site Cleanup Section 4U.S. Environmental Protection Agency825 Jadwin Avenue, Suite 210Richland, Washington 99352

Addressees: TRANSMITTAL OF 100-HR-3 GROUNDWATER OPERABLE UNIT WELL INSTALLATION SAMPLING AND ANALYSIS PLAN, ADDENDUM 13: WELLS 199-D2-14, 199-D1-1, 199-H1-51,199-H3-33, 199-H3-34, AND 199-H6-9, DOE/RL-2013-35-ADD 13, REVISION 0 This letter transmits the 100-HR-3 Groundwater Operable Unit Well Installation Sampling and Analysis Plan, Addendum 13: Wells 199-D2-14, 199-D1-1, 199-H1-51, 199-H3-33, 199-H3-34, AND 199-H6-9,DOE/RL-2013-35-ADD 13, Revision 0 for your information.

If you have any questions, please contact me or your staff may contact John Sands, of my staff, on (509) 372-2282.

Sincerely,

Michael W. Cline, Director Soil and Groundwater Division

SGD:JPS Richland Operations Office

Attachment:1. DOE/RL-2013-35

ADD -13 Rev 0

cc: See page 2

Michael W. Cline Digitally signed by Michael W. Cline Date: 2021.01.27 12:28:47 -08'00'

Addressees: -2- January 27, 202121-SGD-000361

cc w/attachsJ. Bell, NPT A. L. Boyd, EcologyR. Buck, Wanapum L. Contreras, YN D. R. Einan, EPA S. Leckband, HAB N. M. Menard, Ecology M. Murphy, CTUIR S. N. Schleif, EcologyK. R. Welsch, EcologyM. Woods, ODOE Administrative Record (100-HR-3).Environmental Portal

cc w/o attachs:S. G. Austin, CHPRCS. L. Brasher, MSAS. W. Davis, MSAR. E. Fox, CHPRCL. K. O’Mara, CHPRC

Approved for Public Release;Further Dissemination Unlimited

Approved for Public Release;Further Dissemination Unlimited

By Lynn M. Ayers at 2:26 pm, Dec 17, 2020

DOE/RL-2013-35-ADD13, REV. 0

iii

Signature Sheet

Title: 100-HR-3 Groundwater Operable Unit Well Installation Sampling and Analysis Plan, Addendum 13: Wells 199-D2-14, 199-D1-1, 199-H1-51, 199-H3-33, 199-H3-34, and 199-H6-9

________________________________ ___________________________________ __________ Print Name Signature Date U.S. Department of Energy, Richland Operations Office

________________________________ ___________________________________ __________ Print Name Signature Date U.S. Environmental Protection Agency

________________________________ ___________________________________ __________ Print Name Signature Date Washington State Department of Ecology

Michael W. Cline Digitally signed by Michael W. Cline Date: 2020.12.17 15:31:10 -08'00'

LAURA BUELOW Digitally signed by LAURA BUELOW Date: 2020.12.18 06:48:35 -08'00'

Digitally signed by Welsch, Kim (ECY) Date: 2020.12.21 06:51:31 -08'00'

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This page intentionally left blank.

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Contents

1 Introduction ....................................................................................................................................... 1

2 Technical Justification ...................................................................................................................... 6

3 Well Design ........................................................................................................................................ 6

4 Sampling ............................................................................................................................................ 8

5 Analytical Requirements ................................................................................................................ 25

6 Documentation and Reporting ....................................................................................................... 31

7 References ........................................................................................................................................ 31

Figures

Figure 1. New Well Locations in the 100-D Area ................................................................................. 2 Figure 2. New Well Locations in the 100-H Area ................................................................................. 3 Figure 3. Generalized Well Construction Diagram for Unconfined Aquifer

Monitoring/ Extraction/Injection Wells .................................................................................. 4 Figure 4. Generalized Well Construction Diagram for Wells Completed

Within the Uppermost water-bearing Unit of the RUM ......................................................... 5 Figure 5. General Lithology and Planned Sample Depths for Unconfined

Aquifer Wells 199-D1-1 (C9935) and 199-D2-14 (C9718) ................................................... 9 Figure 6. General Lithology and Planned Sample Depths for Unconfined

Aquifer Well 199-H1-51 ....................................................................................................... 10 Figure 7. General Lithology and Planned Sample Depths for RUM Aquifer Well 199-H3-33 ........... 11 Figure 8. General Lithology and Planned Sample Depths for RUM Aquifer Well 199-H6-9 ............. 12 Figure 9. General Lithology and Planned Sample Depths for RUM Aquifer Well 199-H3-34 ........... 13 Figure 10. 100-HR-3 OU Generalized Hydrogeology ........................................................................... 25

Tables

Table 1. Proposed Wells ....................................................................................................................... 1 Table 2. Technical Needs and Justification Summary .......................................................................... 6 Table 3. Expected Drilling Depths........................................................................................................ 7 Table 4. Unconfined Monitoring Wells 199-D1-1 and 199-D2-14 Sample Collection ...................... 14 Table 5. Unconfined Extraction Well 199-H1-51 Sample Collection ................................................ 15 Table 6. RUM Extraction Well 199-H3-33 Sample Collection .......................................................... 16 Table 7. RUM Monitoring Well 199-H6-9 Sample Collection .......................................................... 19 Table 8. RUM Monitoring Well 199-H3-34 Sample Collection ........................................................ 21 Table 9. Analytical Methods for the 100-HR-3 Groundwater OU ..................................................... 26 Table 10. Laboratory QC Elements and Acceptance Criteria ............................................................... 28 Table 11. Preservation and Holding Time Guidelines for Laboratory Analyses .................................. 30

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Terms EQL estimated quantitation limit

HASQARD Hanford Analytical Quality Assurance Requirements Document

OU operable unit

PQL practical quantitation limit

QC quality control

RUM Ringold Formation upper mud

Rwie Ringold Formation member of Wooded Island – unit E

SAP sampling and analysis plan

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1 Introduction This sampling and analysis plan (SAP) addendum has been prepared to support ongoing groundwater remediation efforts at the 100-HR-3 Groundwater Operable Unit (OU). Remediation is being conducted under EPA et al, 2018, Record of Decision Hanford 100 Area Superfund Site 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units, which was signed by the U.S. Department of Energy, U.S. Environmental Protection Agency, and Washington State Department of Ecology in July 2018. This addendum for DOE/RL-2013-35, 100-HR-3 Groundwater Operable Unit Well Installation Sampling and Analysis Plan (hereinafter called the parent SAP), contains site-specific field sampling plans for the proposed wells identified in Table 1. This addendum adopts the analytical methods, quality control (QC) acceptance criteria, and preservation and holding time guidelines for laboratory analysis (with minor changes) from the parent SAP (DOE/RL-2013-35) and TPA-CN-1100, TPA Change Notice Form: DOE/RL-2013-35-ADD12, 100-HR-3 Groundwater Operable Unit Well Installation Sampling And Analysis Plan, Addendum 12: Wells 199-D11-1, 699-98-50, 699-95-48B, 699-96-428, 199-H4-94, and 199-H3-14, Rev. 0. The analytical methods, QC, acceptance criteria, and preservation and holding time guidelines are in Chapter 2 of this document. The minor changes amount to practical quantitation limit (PQL) updates (Table 2 in ECF-HANFORD-18-0058, Practical Quantitation Limits for Groundwater Environmental Samples) for 14797-55-8 nitrate, as NO3, 14265-44-2 phosphate, and 17439-96-5 manganese. These changes arise because the changes are PQL values that have been calculated in the time between this document’s writing and DOE/RL-2013-35-ADD12, 100-HR-3 Groundwater Operable Unit Well Installation Sampling and Analysis Plan, Addendum 12: Wells 199-D11-1, 699-98-50, 699-95-48B, 699-96-42B, 199-H4-94, and 199-H3-1 (as modified by TPA-CN-1100). It should be noted that the parent SAP refers to quantitation limits as estimated quantitation limits (EQLs) which are essentially the same things as PQLs. The analytical requirements for groundwater in this document are in DOE/RL-2013-30, Sampling and Analysis Plan for the 100-HR-3 Groundwater Operable Unit Monitoring. Groundwater analytical requirements in DOE/RL-2013-30 have been reconciled with and are concurrent with those to be included in the pending new groundwater monitoring SAP DOE/RL-2017-13 ADD1 which will be included in the remedial design/remedial action work plan for the 100-HR-3 OU. Soil analytical requirements are stated in Section 5 of this document.

Waste generated under this SAP will be managed in accordance with DOE/RL-2017-13, Remedial Design/Remedial Action Work Plan for the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2 and 100-HR-3 Operable Units, Section 6.3, “Waste Management”.

Table 1. Proposed Wells

Borehole Identification

Well

Northing* Easting* Name Type Aquifer Diameter cm (in.)

C9718 199-D2-14 Monitoring well Unconfined 15.2 (6) 151519 573504

C9935 199-D1-1 Monitoring well Unconfined 15.2 (6) 151558 573381

D0212 199-H1-51 Extraction well Unconfined 15.2 (6) 153595 576725

D0213 199-H3-33 Extraction well RUM 15.2 (6) 152951 577857

D0214 199-H3-34 Monitoring well RUM 15.2 (6) 153172 577553

D0215 199-H6-9 Monitoring well RUM 15.2 (6) 152236 578241 *Coordinates are in NAD83, North American Datum of 1983, Washington State Plane South (meters). RUM = Ringold Formation upper mud

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In addition, methods in this addendum will adhere to the updated DOE/RL-96-68, Hanford Analytical Services Quality Assurance Requirements Document (HASQARD), standards. Wells identified in Table 1 are planned for installation in fiscal year 2021.

Figures 1 and 2 show the locations of the proposed wells identified in Table 1. Detailed information regarding well construction (including screen length), quality assurance, and sampling is provided in DOE/RL-2013-35 and in Chapters 3 through 5 of this document. Figures 3 and 4 present the general well construction diagrams for unconfined and uppermost Ringold Formation upper mud (RUM) water-bearing units respectively.

Figure 1. New Well Locations in the 100-D Area

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Figure 2. New Well Locations in the 100-H Area

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Figure 3. Generalized Well Construction Diagram for Unconfined Aquifer Monitoring/ Extraction/Injection Wells

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Figure 4. Generalized Well Construction Diagram for Wells Completed

Within the Uppermost water-bearing Unit of the RUM

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2 Technical Justification Six wells are planned for installation under this SAP addendum. Table 2 summarizes the technical justification for each of the planned wells.

Table 2. Technical Needs and Justification Summary Proposed

Well Technical Justification Well Use

199-D1-1 Monitor Cr(VI) in the area downgradient of the 100-D Area southern plume during P&T operations, followed by realignment to an extraction well during remedial activities.

Monitoring

199-D2-14 Monitor Cr(VI) in the area downgradient of the 100-D Area southern plume during P&T operations, followed by realignment to an extraction well during remedial activities.

Monitoring

199-H1-51 Extraction in the unconfined aquifer near the river shore in an area where the Horn Cr(VI) plume is suspected of reaching the river. Extraction

199-H3-33 Extraction from the RUM aquifer in an area of expected Cr(VI) concentrations >100 μg/L in the central part of the 100-H Area just north of the 183-H Solar Evaporation Basins.

Extraction

199-H3-34 Monitor, characterize, and delineate contamination in the uppermost water-bearing unit of the RUM in the northwestern portion of the 100-H Area. Monitoring

199-H6-9

Monitor, characterize, and delineate contamination in the uppermost water-bearing unit of the RUM in the southeastern portion of the 100-H Area. Characterization of the lower confining and water-bearing units in the RUM.

Monitoring

P&T = pump and treat RUM = Ringold Formation upper mud

3 Well Design

Table 3 presents a summary of the anticipated drilling depths for each well and includes the anticipated screened intervals, the estimated depth to water (unconfined and RUM aquifers), and the estimated depth to the RUM surface. General well designs for unconfined and RUM well constructions are illustrated in Figures 3 and 4, respectively. Screened intervals will span the entire aquifer thickness with the top of the screen set above the high water-level mark. RUM well screens will span the aquifer thickness between confining layers. Exceptions may be made to screened interval lengths in cases of thick aquifers and specifically targeted contamination zones (i.e., screened interval set to the aquifer depths where contamination occurs and to accommodate a thin semi-confining layer between the RUM aquifer interval and the bottom of the unconfined aquifer as to not allow the filter pack to compromise the semi-confining layer [see Figure 4]).

Wells 199-D1-1 and 199-D2-14 are to be completed in the unconfined aquifer as monitoring wells (Figure 3). The locations planned for these wells are downgradient of potential future remediation activities at 100-D-100 and/or 100-D-56. Water levels in the aquifer near the planned locations of wells 199-D1-1 and 199-D2-14 typically varied by about 0.25 m (0.82 ft) from late 2018 to mid-2020. Such small variability in the seasonal water-level trend would not warrant well design modification for wells 199-D1-1 and 199-D2-14. However, river levels were unseasonably low during 2019, and a difference of about a meter exists between mid-2017 and mid-2020. At these locations, the top of the screen should be set 5 ft above the static water level to accommodate possible large water-table fluctuations. Therefore, a 20 ft screen may be needed at these locations.

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Tabl

e 3. E

xpec

ted

Drilli

ng D

epth

s W

ell

E

xpec

ted

Dep

th

Exp

ecte

d Sc

reen

ed In

terv

al

Rum

Sem

i-co

nfin

ing

Lay

er

Thi

ckne

ssb

(m [f

t])

Exp

ecte

d T

otal

Dri

lled

Dep

th

(m [f

t] b

gs)

Iden

tific

atio

n N

ame

Scre

ened

In

terv

al A

quife

r T

o W

ater

a (m

[ft]

bgs

)

To

RU

M

Surf

ace

(m [f

t] b

gs)

Unc

onfin

ed

Aqu

ifer

(m

[ft]

bgs

)

RU

M W

ater

B

eari

ng U

nit

(m [f

t] b

gs)

199-

D1-

1 C9

935

Unc

onfin

ed

26 (8

5)

32 (1

06)

22.8

– 3

0 (7

5 –

100)

N

/A

not e

stim

ated

34

(110

)

199-

D2-

14

C971

8 U

ncon

fined

26

(85)

32

(106

) 22

.8 –

30

(75

– 10

0)

N/A

no

t esti

mat

ed

34 (1

10)

199-

H1-

51

D02

12

Unc

onfin

ed

10 (3

3)

11 (3

7)

9 –

12

(30

– 40

) N

/A

1 –

2

(3 –

6)c

14 (4

5)

199-

H3-

33

D02

13

RUM

13

(41,

UA

), 18

(5

9, R

UM

) 18

(60)

N

/A

19 –

23.

5

(62

– 77

) 0.

6 (2

) 37

(122

)

199-

H3-

34

D02

14

RUM

7

(24,

UA

), 18

(6

0, R

UM

) 13

(41)

N

/A

14 –

17

(4

5 –

55)

0.6

(2)

26 (8

5)

199-

H6-

9 D

0215

RU

M

14 (4

7, U

A),

21

(70,

RU

M)

18 (6

0)

N/A

21

– 2

7

(70

– 90

) 0.

6 (2

) 30

(99)

a. D

epth

to w

ater

for t

he R

UM

is th

e ex

pect

ed d

epth

of c

onta

ct fo

r the

RU

M a

quife

r wat

er-b

earin

g un

it an

d do

es n

ot re

pres

ent h

ead.

b.

RU

M se

mi-c

onfin

ing

laye

r thi

ckne

ss n

ot e

stim

ated

for b

oreh

ole

loca

tions

whe

re R

UM

aqu

ifer p

enet

ratio

n is

not n

eede

d.

c. R

epre

sent

s a m

inim

um th

ickn

ess r

ange

. Exi

sting

wel

l geo

logi

cal l

ogs d

o no

t sho

w to

tal d

epth

s dee

per t

hat t

he fu

ll th

ickn

ess o

f the

RU

M se

mi-c

onfin

ing

laye

r. bg

s =

belo

w g

roun

d su

rface

N

/A

= no

t app

licab

le

RUM

=

Ring

old

Form

atio

n up

per m

ud

UA

=

unco

nfin

ed a

quife

r

DOE/RL-2013-35-ADD13, REV. 0

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The well location of unconfined aquifer extraction well 199-H1-51 was selected for capturing the Horn hexavalent chromium (Cr(VI)) plume (≥10 μg/L) extension that appears to be in contact with the Columbia River. The unconfined aquifer in this area is relatively thin, and unconfined aquifer water-level responses to river stage changes are rapid. However, it is expected that this will not greatly affect the performance of well 199-H1-51 because of planned injection in its immediate vicinity. Four extraction wells (199-H1-32, 199-H1-33, 199-H1-34, and 199-H1-35) will be realigned as injection wells in FY 2021. A more stable water table is expected because of the planned injection near 199-H1-51. Therefore, no special modifications to the well design are necessary.

Typical semiconfined aquifer conditions are expected at RUM wells 199-H3-33, 199-H3-34, and 199-H6-9, and well design modifications are not expected (Figure 4). The RUM semiconfined aquifer consists of silty sand and sand layers sandwiched between upper and lower silty layers. The saturated thickness tends to range between 3 and 9 m (10 and 30 ft).

4 Sampling Cr(VI) contamination is known to be present in the uppermost RUM water-bearing unit in the central part of 100-H, but the extent is not well defined to the north and south. Samples collected and analyzed from the RUM wells as part of this addendum will provide information to further define the extent of Cr(VI) contamination within the uppermost water-bearing unit in the RUM for the 100-HR-3 OU at 100-H. Borehole 199-H3-33 will be advanced into the lower RUM water-bearing unit (below the uppermost RUM water-bearing unit), and samples will be collected to determine the vertical extent of Cr(VI) at that location. This location was deemed appropriate for deep sampling because it is within the central portion of the highest Cr(VI) interpolation contour in 100-H.

Figures 5 through 9 show the general lithology for each new well based on the lithology of nearby existing wells. Sampling zones and depths are estimated from these interpretations but may be modified dependent on actual conditions encountered during drilling. The preferred drilling method is Sonic because it allows continuous coring. Continuous core samples can be collected in plastic sleeves rather than sealed liners if no sampling for volatile organic compounds is specified.

The RUM lithology contains various lenses of sand, silt, and clay within the uppermost water-bearing unit of the RUM. Clarifying the continuity, thickness, and hydrologic properties of this unit will expand the ability to track, model, and remediate Cr(VI) in the RUM aquifer. Soil samples will be collected and analyzed for grain size distribution, hydraulic conductivity, and permeability. Soil samples will be analyzed for particle size distribution within the aquifer interval into which the well screen will be set to specify screen slot size and filter pack requirements, per standard practice. Hydraulic conductivity and permeability are the hydrologic properties of this unit. Hydrologic property data will be input to the hydrologic modeling framework of the RUM aquifer and used for future predictions of contaminant migration.

Both the unconfined aquifer and the RUM aquifer will be sampled during drilling to allow for early characterization of aquifer conditions. Water samples will be collected to evaluate water chemistry and contaminant levels. Post-development groundwater sample data will be used to establish initial hydrochemical conditions. The sample type, targeted geologic unit, soil and water sample estimated depths, and analytes/physical properties are presented in Tables 4 through 8. Sample locations presented in Tables 4 through 8 are general zones for sample collection, with the targeted geologic unit where the sample is to be obtained identified. There is no suspected contamination in the vadose zone at the RUM aquifer wells; therefore, soil samples for chemical and physical analysis will not be collected from the vadose zone above the water table. Grab samples will be collected throughout the borehole for lithologic and archival purposes.

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Figure 5. General Lithology and Planned Sample Depths

for Unconfined Aquifer Wells 199-D1-1 (C9935) and 199-D2-14 (C9718)

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Figure 6. General Lithology and Planned Sample Depths for Unconfined Aquifer Well 199-H1-51

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Figure 7. General Lithology and Planned Sample Depths for RUM Aquifer Well 199-H3-33

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DOE/RL-2013-35-ADD13, REV. 0

14

Tabl

e 4. U

ncon

fined

Mon

itorin

g W

ells 1

99-D

1-1 a

nd 19

9-D2

-14 S

ampl

e Col

lectio

n E

stim

ated

Dep

th to

Wat

er (m

[ft]

bgs

) 26

(85)

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs

) 33

.5 (1

10)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or

Sam

plin

g

Est

imat

ed

Sam

ple

Dep

th

(m [f

t] b

gs)

Ana

lyte

s/Phy

sical

Pro

pert

ies

Geo

logi

ca G

rab

Arc

hiva

l pur

pose

s Li

thol

ogy

chan

ges

Ever

y 1.

5 (5

) and

at

lith

olog

ic

chan

ges

Non

e

Scre

en se

lect

ion

Unc

onfin

ed A

quife

r Ev

ery

1.5

(5) o

f sc

reen

ed in

terv

al

Gra

in si

ze (f

ield

mea

sure

men

t)

Cont

inuo

us

core

D

eter

min

e co

ntam

inan

t co

ncen

tratio

ns a

nd e

stim

ate

hydr

aulic

pro

perti

es in

the

unco

nfin

ed a

quife

r sed

imen

t

Unc

onfin

ed a

quife

r –

Han

ford

gra

vel o

r Rw

ie (t

op o

f th

e RU

M si

lt es

timat

ed a

t 32

m

[106

ft] b

gs)

29 to

30.

5

(96

to 1

00)b

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity

Estim

ate

hydr

aulic

pro

perti

es in

the

RUM

-con

finin

g la

yer

RUM

mat

eria

l – si

lt/cl

ay

32 to

33.

5

(106

to 1

10)b

Hyd

raul

ic co

nduc

tivity

and

fa

lling

hea

d pe

rmea

bilit

y W

ater

b Pu

mpe

d Po

st-de

velo

pmen

t M

iddl

e of

the

unco

nfin

ed a

quife

rc Sc

reen

ed in

terv

al

estim

ated

at 2

4 to

30

(80

– 10

0)

Alk

alin

ity, c

alci

um, c

hlor

ide,

ph

osph

ate,

sodi

um, f

ilter

ed

Cr(V

I), t

otal

chr

omiu

m,

mag

nesiu

m, p

otas

sium

c Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

a. O

ne sa

mpl

e is

to b

e co

llect

ed fr

om w

ithin

the

dept

h in

terv

al, t

arge

ting

the

geol

ogic

uni

t not

ed.

b. M

etal

s are

to b

e an

alyz

ed a

s filt

ered

onl

y fo

r sam

ples

col

lect

ed d

urin

g dr

illin

g if

the

sam

ple

turb

idity

is >

5 N

TU’s

. Filt

ered

and

unf

ilter

ed sa

mpl

es a

re to

be

colle

cted

for p

ost-

deve

lopm

ent e

vent

s. Cr

(VI)

is an

alyz

ed a

s a fi

eld-

filte

red

sam

ple

only

if th

e sa

mpl

e tu

rbid

ity is

> 5

NTU

s. c.

Fie

ld p

aram

eter

s and

con

stitu

ents

for a

naly

tical

sam

ples

in g

roun

dwat

er fo

r RU

M w

ells

are

defin

ed in

App

endi

x B

of D

OE/

RL-2

017-

13, R

emed

ial D

esig

n/Re

med

ial A

ctio

n W

ork

Plan

for t

he 1

00-D

R-1,

100

-DR-

2, 1

00-H

R-1,

100

-HR-

2, a

nd 1

00-H

R-3

Ope

rabl

e U

nits.

bgs

= b

elow

gro

und

surfa

ce

DO

= d

issol

ved

oxyg

en

NTU

=

neph

elom

etric

turb

idity

uni

t Rw

ie

= Ri

ngol

d Fo

rmat

ion

mem

ber o

f Woo

ded

Isla

nd –

uni

t E

RUM

=

Ring

old

Form

atio

n up

per m

ud

SpC

= sp

ecifi

c co

nduc

tanc

e

DOE/RL-2013-35-ADD13, REV. 0

15

Tabl

e 5. U

ncon

fined

Ext

ract

ion

Well

199-

H1-5

1 Sam

ple C

ollec

tion

Est

imat

ed D

epth

to W

ater

(m [f

t] b

gs)

10 (3

3)

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs

) 14

(45)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or

Sam

plin

g E

stim

ated

Sam

ple

Dep

th (m

[ft]

bgs

) A

naly

tes/P

hysic

al P

rope

rtie

s

Geo

logi

ca G

rab

Arc

hiva

l pur

pose

s Li

thol

ogy

chan

ges

Ever

y 1.

5 (5

) and

at

litho

logi

c cha

nges

N

one

Scre

en se

lect

ion

Unc

onfin

ed A

quife

r Ev

ery

1.5

(5) o

f sc

reen

ed in

terv

al

Gra

in si

ze (f

ield

mea

sure

men

t)

Cont

inuo

us

core

D

eter

min

e co

ntam

inan

t co

ncen

tratio

ns a

nd e

stim

ate

hydr

aulic

pro

perti

es in

the

RUM

aq

uita

rd se

dim

ent

Upp

er R

UM

sem

icon

finin

g un

it 13

.1 to

13.

7 (4

3 to

45)

a H

ydra

ulic

cond

uctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI)

, tot

al c

hrom

ium

Wat

erb

Dur

ing

drill

ing

Unc

onfin

ed a

quife

r 10

to 1

1 (3

3 to

37)

a Fi

ltere

d Cr

(VI)

, tot

al c

hrom

ium

, Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

Upp

erm

ost w

ater

-bea

ring

unit

of th

e RU

M (i

f enc

ount

ered

bef

ore

tota

l dep

th)

13.1

to 1

3.7

(43

to 4

5)a

Filte

red

Cr(V

I), to

tal c

hrom

ium

, Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

Pum

ped

Post-

deve

lopm

ent

Unc

onfin

ed a

quife

r uni

t Sc

reen

ed in

terv

al

estim

ated

at 9

to 1

2

(30

to 4

0)a

Alk

alin

ity, c

alci

um, c

hlor

ide,

ph

osph

ate,

sodi

um, f

ilter

ed

Cr(V

I), t

otal

chr

omiu

m,

mag

nesiu

m, p

otas

sium

c Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

a. O

ne sa

mpl

e is

to b

e co

llect

ed fr

om w

ithin

the

dept

h in

terv

al, t

arge

ting

the

geol

ogic

uni

t not

ed.

b. M

etal

s are

to b

e an

alyz

ed a

s filt

ered

onl

y fo

r sam

ples

col

lect

ed d

urin

g dr

illin

g if

the

sam

ple

turb

idity

is >

5 N

TU’s

. Filt

ered

and

unf

ilter

ed sa

mpl

es a

re to

be

colle

cted

for

post-

deve

lopm

ent e

vent

s. Cr

(VI)

is an

alyz

ed a

s a fi

eld-

filte

red

sam

ple

only

if th

e sa

mpl

e tu

rbid

ity is

> 5

NTU

s.

c. F

ield

par

amet

ers a

nd c

onsti

tuen

ts fo

r ana

lytic

al sa

mpl

es in

gro

undw

ater

for R

UM

wel

ls ar

e de

fined

in A

ppen

dix

B of

DO

E/RL

-201

7-13

, Rem

edia

l Des

ign/

Rem

edia

l Act

ion

Wor

k Pl

an fo

r the

100

-DR-

1, 1

00-D

R-2,

100

-HR-

1, 1

00-H

R-2,

and

100

-HR-

3 O

pera

ble

Uni

ts.

bgs

= be

low

gro

und

surfa

ce

DO

=

diss

olve

d ox

ygen

N

TU

= ne

phel

omet

ric tu

rbid

ity u

nit

SpC

= sp

ecifi

c co

nduc

tanc

e RU

M =

Ri

ngol

d Fo

rmat

ion

uppe

r mud

DOE/RL-2013-35-ADD13, REV. 0

16

Tabl

e 6. R

UM E

xtra

ctio

n W

ell 19

9-H3

-33 S

ampl

e Col

lectio

n E

stim

ated

Dep

th to

Wat

er (m

[ft]

bgs)

12

(40.

5) u

ncon

fined

, 19

(62)

RU

M

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs)

37

(122

)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or S

ampl

ing

Est

imat

ed S

ampl

e D

epth

(m [f

t] bg

s)

Ana

lyte

s/Ph

ysic

al P

rope

rtie

s G

eolo

gica

G

rab

Arc

hiva

l pur

pose

s Li

thol

ogy

chan

ges

Ever

y 1.

5 (5

) and

at

litho

logi

c cha

nges

N

one

Scre

en se

lect

ion

Upp

erm

ost w

ater

-bea

ring

unit

in th

e RU

M; s

ampl

es sh

ould

be l

imite

d to

the

wat

er-b

earin

g zo

ne

Ever

y 1.

5 (5

) of

scre

ened

inte

rval

G

rain

size

(fie

ld m

easu

rem

ent)

Cont

inuo

us

core

Det

erm

ine

cont

amin

ant

conc

entra

tions

and

esti

mat

e hy

drau

lic

prop

ertie

s in

the

unco

nfin

ed a

quife

r se

dim

ent

Unc

onfin

ed a

quife

r – H

anfo

rd g

rave

l or

Rw

ie (t

op o

f the

RU

M si

lt es

timat

ed

at 1

8 m

[60

ft] b

gs)

12 to

13

(4

0.5

to 4

2)a

Hyd

raul

ic co

nduc

tivity

, Cr(V

I),

tota

l chr

omiu

m

Det

erm

ine

cont

amin

ant

conc

entra

tions

and

esti

mat

e hy

drau

lic

prop

ertie

s in

the

unco

nfin

ed a

quife

r se

dim

ent

Unc

onfin

ed a

quife

r – H

anfo

rd g

rave

l or

Rw

ie (t

op o

f the

RU

M si

lt es

timat

ed

at 1

8 m

[60

ft] b

gs)

15 to

16

(50

to 5

2)

Hyd

raul

ic co

nduc

tivity

, Cr(V

I),

tota

l chr

omiu

m

Estim

ate

hydr

aulic

pro

perti

es in

the

RUM

-con

finin

g la

yer

RUM

mat

eria

l – si

lt/cl

ay

18 to

19

(6

0 to

62)

a H

ydra

ulic

cond

uctiv

ity, F

allin

g he

ad p

erm

eabi

lity

Det

erm

ine

cont

amin

ant

conc

entra

tions

and

esti

mat

e hy

drau

lic

prop

ertie

s in

the

RUM

aqu

ifer

sedi

men

t

Upp

erm

ost w

ater

-bea

ring

unit

in th

e RU

M

19 to

20

(62

to 6

4)

21 to

22

(6

9 to

71)

a

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI),

tota

l chr

omiu

m

Estim

ate

hydr

aulic

pro

perti

es in

the

low

er R

UM

con

finin

g la

yer

Mid

dle

and

botto

m o

f the

low

er si

lt be

low

the

RUM

aqu

ifer

26.5

to 2

7 (8

7 to

89)

29

to 3

0 (9

6 to

98)

Hyd

raul

ic c

ondu

ctiv

ity, F

allin

g he

ad p

erm

eabi

lity

Det

erm

ine

cont

amin

ant

conc

entra

tions

and

esti

mat

e hy

drau

lic

prop

ertie

s in

the

low

er R

UM

aqu

ifer

sedi

men

t

Mid

dle

and

botto

m o

f the

low

er R

UM

aq

uife

r 33

to 3

4

(108

to 1

12)

36 to

37

(1

18 to

122

)

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI),

tota

l chr

omiu

m

DOE/RL-2013-35-ADD13, REV. 0

17

Tabl

e 6. R

UM E

xtra

ctio

n W

ell 19

9-H3

-33 S

ampl

e Col

lectio

n E

stim

ated

Dep

th to

Wat

er (m

[ft]

bgs)

12

(40.

5) u

ncon

fined

, 19

(62)

RU

M

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs)

37

(122

)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or S

ampl

ing

Est

imat

ed S

ampl

e D

epth

(m [f

t] bg

s)

Ana

lyte

s/Ph

ysic

al P

rope

rtie

s W

ater

b D

urin

g dr

illin

g To

p of

the

unco

nfin

ed a

quife

r 12

to 1

3

(40.

5 to

42)

Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

M

iddl

e of

the

unco

nfin

ed a

quife

r 15

to 1

6 (5

0 to

52)

Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

To

p of

the

RUM

aqu

ifer

19 to

20

(62

to 6

4)

Filte

red

Cr(V

I), to

tal c

hrom

ium

, Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

Mid

dle

of th

e RU

M a

quife

r 21

to 2

2 (6

9 to

72)

Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

Bo

ttom

of t

he R

UM

aqu

ifer

23 to

23.

5

(75

to 7

6.5)

Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

M

iddl

e of

the

low

er si

lt be

low

the

RUM

aqu

ifer

26.5

to 2

7 (8

7 to

89)

Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

M

iddl

e of

the

low

er R

UM

aqu

ifer

33 to

34

(1

08 to

112

) Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

Bo

ttom

of t

he lo

wer

RU

M a

quife

r 36

to 3

7

(118

to 1

22)

Filte

red

Cr(V

I), to

tal c

hrom

ium

, Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

Pum

ped

Post-

deve

lopm

ent

Upp

erm

ost w

ater

-bea

ring

unit

in th

e RU

Mc

Scre

ened

inte

rval

es

timat

ed a

t 27

to 3

2 (6

5 to

75)

a

Filte

red

Cr(V

I), to

tal c

hrom

ium

, m

agne

sium

, nitr

ate,

pot

assiu

m,

sulfa

te, m

etal

s, Tc

-99,

and

ur

aniu

mc

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

a.

One

sam

ple

is to

be

colle

cted

from

with

in th

e de

pth

inte

rval

, tar

getin

g th

e ge

olog

ic u

nit n

oted

.

DOE/RL-2013-35-ADD13, REV. 0

18

Tabl

e 6. R

UM E

xtra

ctio

n W

ell 19

9-H3

-33 S

ampl

e Col

lectio

n E

stim

ated

Dep

th to

Wat

er (m

[ft]

bgs)

12

(40.

5) u

ncon

fined

, 19

(62)

RU

M

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs)

37

(122

)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or S

ampl

ing

Est

imat

ed S

ampl

e D

epth

(m [f

t] bg

s)

Ana

lyte

s/Ph

ysic

al P

rope

rtie

s b.

Met

als a

re to

be

anal

yzed

as f

ilter

ed o

nly

for s

ampl

es c

olle

cted

dur

ing

drill

ing

if th

e sa

mpl

e tu

rbid

ity is

> 5

NTU

’s. F

ilter

ed a

nd u

nfilt

ered

sam

ples

are

to b

e co

llect

ed fo

r po

st-de

velo

pmen

t eve

nts.

Cr(V

I) is

anal

yzed

as a

fiel

d-fil

tere

d sa

mpl

e on

ly if

the

sam

ple

turb

idity

is >

5 N

TUs.

c.

Fie

ld p

aram

eter

s and

con

stitu

ents

for a

naly

tical

sam

ples

in g

roun

dwat

er fo

r RU

M w

ells

are

defin

ed in

App

endi

x B

of D

OE/

RL-2

017-

13, R

emed

ial D

esig

n/Re

med

ial A

ctio

n W

ork

Plan

fo

r the

100

-DR-

1, 1

00-D

R-2,

100

-HR-

1, 1

00-H

R-2,

and

100

-HR-

3 O

pera

ble

Uni

ts.

bgs

= be

low

gro

und

surfa

ce

DO

=

diss

olve

d ox

ygen

N

TU

= ne

phel

omet

ric tu

rbid

ity u

nit

Rwie

=

Ring

old

Form

atio

n m

embe

r of W

oode

d Is

land

– u

nit E

RU

M

= Ri

ngol

d Fo

rmat

ion

uppe

r mud

Sp

C =

spec

ific

cond

ucta

nce

DOE/RL-2013-35-ADD13, REV. 0

19

Tabl

e 7. R

UM M

onito

ring

Well

199-

H6-9

Sam

ple C

ollec

tion

Est

imat

ed D

epth

to W

ater

(m [f

t] b

gs)

Unc

onfin

ed 1

4 (4

6.5)

, RU

M 2

1 (7

0)

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs

) 30

(99)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or

Sam

plin

g E

stim

ated

Sam

ple

Dep

th (m

[ft]

bgs

) A

naly

tes/P

hysic

al P

rope

rtie

s

Geo

logi

ca G

rab

Arc

hiva

l pur

pose

s Li

thol

ogy

chan

ges

Ever

y 1.

5 (5

) and

at

lith

olog

ic

chan

ges

Non

e

Scre

en se

lect

ion

Upp

erm

ost w

ater

-bea

ring

unit

in

the

RUM

; sam

ples

shou

ld b

e lim

ited

to th

e w

ater

-bea

ring

zone

Ever

y 1.

5 (5

) of

scre

ened

inte

rval

G

rain

size

(fie

ld m

easu

rem

ent)

Cont

inuo

us

core

D

eter

min

e co

ntam

inan

t con

cent

ratio

ns

and

estim

ate

hydr

aulic

pro

perti

es in

the

unco

nfin

ed a

quife

r sed

imen

t

Unc

onfin

ed a

quife

r – H

anfo

rd

grav

el o

r Rw

ie (t

op o

f the

RU

M

silt e

stim

ated

at 1

8 m

[60

ft] b

gs)

17 to

18

(5

7 to

60)

a H

ydra

ulic

cond

uctiv

ity,

Cr(V

I), t

otal

chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in th

e un

conf

ined

aqu

ifer s

edim

ent

Upp

er R

UM

-con

finin

g la

yer

18.3

to 1

8.9

(60

to 6

2)

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI),

tota

l chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in th

e RU

M a

quife

r sed

imen

t

Upp

erm

ost w

ater

-bea

ring

unit

in

the

RUM

21

to 2

3

(71

to 7

5)a

Hyd

raul

ic co

nduc

tivity

and

fa

lling

hea

d pe

rmea

bilit

y,

Cr(V

I), t

otal

chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in th

e RU

M a

quife

r sed

imen

t

Top

of th

e lo

wer

RU

M-c

onfin

ing

laye

r 23

.5 to

24

(77

to 7

9)

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI)

, tot

al c

hrom

ium

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in th

e RU

M a

quife

r sed

imen

t

Mid

dle

of th

e lo

wer

RU

M-c

onfin

ing

laye

r 26

.5 to

27

(8

7 to

89)

H

ydra

ulic

con

duct

ivity

and

fa

lling

hea

d pe

rmea

bilit

y,

Cr(V

I), t

otal

chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in th

e RU

M a

quife

r sed

imen

t

Botto

m o

f the

low

er

RUM

-con

finin

g la

yer

29 to

30

(96

to 9

8)

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI)

, tot

al c

hrom

ium

DOE/RL-2013-35-ADD13, REV. 0

20

Tabl

e 7. R

UM M

onito

ring

Well

199-

H6-9

Sam

ple C

ollec

tion

Est

imat

ed D

epth

to W

ater

(m [f

t] b

gs)

Unc

onfin

ed 1

4 (4

6.5)

, RU

M 2

1 (7

0)

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs

) 30

(99)

Wat

erb

Dur

ing

drill

ing

Top

of th

e un

conf

ined

aqu

ifer

14 to

15

(4

6.5

to 4

8.5)

a Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

Botto

m o

f the

unc

onfin

ed a

quife

r 17

to 1

8

(57

to 6

0)a

Filte

red

Cr(V

I), to

tal c

hrom

ium

, Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

Upp

erm

ost w

ater

-bea

ring

unit

of th

e RU

M

21 to

23

(7

1 to

75)

a Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

Mid

dle

of th

e lo

wer

RU

M-c

onfin

ing

laye

r 26

.5 to

27

(8

7 to

89)

Fi

ltere

d Cr

(VI),

tota

l chr

omiu

m,

Fiel

d pa

ram

eter

s: pH

, SpC

, te

mpe

ratu

re, t

urbi

dity

, DO

Botto

m o

f the

low

er R

UM

-con

finin

g la

yer

29 to

30

(96

to 9

8)

Filte

red

Cr(V

I), to

tal c

hrom

ium

, Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

Pum

ped

Post-

deve

lopm

ent

Upp

erm

ost w

ater

-bea

ring

unit

in

the

RUM

c Sc

reen

ed in

terv

al

estim

ated

at 2

1 to

27

(70

to 9

0)a

Alk

alin

ity, c

alci

um, c

hlor

ide,

ph

osph

ate,

sodi

um, f

ilter

ed

Cr(V

I), t

otal

chr

omiu

m,

mag

nesiu

m, p

otas

sium

c Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

a. O

ne sa

mpl

e is

to b

e co

llect

ed fr

om w

ithin

the

dept

h in

terv

al, t

arge

ting

the

geol

ogic

uni

t not

ed.

b. M

etal

s are

to b

e an

alyz

ed a

s filt

ered

onl

y fo

r sam

ples

col

lect

ed d

urin

g dr

illin

g if

the

sam

ple

turb

idity

is >

5 N

TU’s

. Filt

ered

and

unf

ilter

ed sa

mpl

es a

re to

be

colle

cted

for

post-

deve

lopm

ent e

vent

s. Cr

(VI)

is an

alyz

ed a

s a fi

eld-

filte

red

sam

ple

only

if th

e sa

mpl

e tu

rbid

ity is

> 5

NTU

s. c.

Fie

ld p

aram

eter

s and

con

stitu

ents

for a

naly

tical

sam

ples

in g

roun

dwat

er fo

r RU

M w

ells

are

defin

ed in

App

endi

x B

of D

OE/

RL-2

017-

13, R

emed

ial D

esig

n/Re

med

ial A

ctio

n W

ork

Plan

for t

he 1

00-D

R-1,

100

-DR-

2, 1

00-H

R-1,

100

-HR-

2, a

nd 1

00-H

R-3

Ope

rabl

e U

nits.

bgs

=

belo

w g

roun

d su

rface

D

O

= di

ssol

ved

oxyg

en

NTU

=

neph

elom

etric

turb

idity

uni

t Rw

ie

= Ri

ngol

d Fo

rmat

ion

mem

ber o

f Woo

ded

Isla

nd –

uni

t E

RUM

=

Ring

old

Form

atio

n up

per m

ud

SpC

= sp

ecifi

c co

nduc

tanc

e

DOE/RL-2013-35-ADD13, REV. 0

21

Tabl

e 8. R

UM M

onito

ring

Well

199-

H3-3

4 Sam

ple C

ollec

tion

Est

imat

ed D

epth

to W

ater

(m [f

t] b

gs)

7.3

(24)

unc

onfin

ed, 1

3 (4

3) R

UM

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs

) 26

(85)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or

Sam

plin

g

Est

imat

ed

Sam

ple

Dep

th (m

[f

t] b

gs)

Ana

lyte

s/Phy

sical

Pr

oper

ties

Geo

logi

ca G

rab

Arc

hiva

l pur

pose

s Li

thol

ogy

chan

ges

Ever

y 1.

5 (5

) and

at

lith

olog

ic

chan

ges

Non

e

Scre

en se

lect

ion

Upp

erm

ost w

ater

-bea

ring

unit

in

the

RUM

; sam

ples

shou

ld b

e lim

ited

to th

e w

ater

-bea

ring

zone

Ever

y 1.

5 (5

) of

scre

ened

inte

rval

G

rain

size

(fie

ld

mea

sure

men

t)

Cont

inuo

us

core

D

eter

min

e co

ntam

inan

t con

cent

ratio

ns

and

estim

ate

hydr

aulic

pro

perti

es in

th

e un

conf

ined

aqu

ifer s

edim

ent

Unc

onfin

ed a

quife

r – H

anfo

rd

grav

el o

r Rw

ie (t

op o

f the

RU

M

silt e

stim

ated

at 1

2.5

m [4

1 ft]

bgs

)

10.0

to 1

0.5

(3

2.5

to 3

4)a

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI),

tota

l chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in

the

unco

nfin

ed a

quife

r sed

imen

t

Upp

er R

UM

-con

finin

g la

yer

12.5

to 1

3.1

(41

to 4

3)

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI),

tota

l chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in

the

RUM

aqu

ifer s

edim

ent

Mid

dle

of th

e up

perm

ost w

ater

-be

arin

g un

it in

the

RUM

15

.4 to

16.

1

(50

to 5

3)a

Hyd

raul

ic co

nduc

tivity

and

fa

lling

hea

d pe

rmea

bilit

y,

Cr(V

I), t

otal

chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in

the

RUM

aqu

ifer s

edim

ent

Botto

m o

f the

upp

erm

ost w

ater

-be

arin

g un

it in

the

RUM

16

.7 to

17.

4 (5

5 to

57)

H

ydra

ulic

con

duct

ivity

and

fa

lling

hea

d pe

rmea

bilit

y,

Cr(V

I), t

otal

chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in

the

RUM

aqu

ifer s

edim

ent

Upp

er p

art o

f low

er

RUM

-con

finin

g la

yer

(18.

3 to

18.

9)

60 to

62

Hyd

raul

ic c

ondu

ctiv

ity a

nd

falli

ng h

ead

perm

eabi

lity,

Cr

(VI)

, tot

al c

hrom

ium

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in

the

RUM

aqu

ifer s

edim

ent

Mid

dle

part

of lo

wer

RU

M-c

onfin

ing

laye

r (2

2 to

23)

72

.5 to

74.

5 H

ydra

ulic

con

duct

ivity

and

fa

lling

hea

d pe

rmea

bilit

y,

Cr(V

I), t

otal

chr

omiu

m

Det

erm

ine

cont

amin

ant c

once

ntra

tions

an

d es

timat

e hy

drau

lic p

rope

rties

in

the

RUM

aqu

ifer s

edim

ent

Low

er p

art o

f low

er

RUM

-con

finin

g la

yer

(25.

3 to

26)

83

to 8

5 H

ydra

ulic

con

duct

ivity

and

fa

lling

hea

d pe

rmea

bilit

y,

Cr(V

I), t

otal

chr

omiu

m

DOE/RL-2013-35-ADD13, REV. 0

22

Tabl

e 8. R

UM M

onito

ring

Well

199-

H3-3

4 Sam

ple C

ollec

tion

Est

imat

ed D

epth

to W

ater

(m [f

t] b

gs)

7.3

(24)

unc

onfin

ed, 1

3 (4

3) R

UM

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs

) 26

(85)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or

Sam

plin

g

Est

imat

ed

Sam

ple

Dep

th (m

[f

t] b

gs)

Ana

lyte

s/Phy

sical

Pr

oper

ties

Wat

erb

Dur

ing

drill

ing

Top

of th

e un

conf

ined

aqu

ifer

7.3

to 8

.0

(24

to 2

6)

Filte

red

Cr(V

I), to

tal

chro

miu

m, F

ield

par

amet

ers:

pH, S

pC, t

empe

ratu

re,

turb

idity

, DO

M

iddl

e of

the

unco

nfin

ed a

quife

r 10

.0 to

10.

5

(32.

5 to

34)

a

Filte

red

Cr(V

I), to

tal

chro

miu

m, F

ield

par

amet

ers:

pH, S

pC, t

empe

ratu

re,

turb

idity

, DO

M

iddl

e of

the

uppe

rmos

t wat

er-b

earin

g un

it in

the

RUM

15

.4 to

16.

1

(50

to 5

3)a

Filte

red

Cr(V

I), to

tal

chro

miu

m, F

ield

par

amet

ers:

pH, S

pC, t

empe

ratu

re,

turb

idity

, DO

Bo

ttom

of t

he u

pper

mos

t wat

er-b

earin

g un

it in

the

RUM

16

.7 to

17.

4 (5

5 to

57)

Fi

ltere

d Cr

(VI),

tota

l ch

rom

ium

, Fie

ld p

aram

eter

s: pH

, SpC

, tem

pera

ture

, tu

rbid

ity, D

O

U

pper

par

t of l

ower

RU

M-c

onfin

ing

laye

r (1

8.3

to 1

8.9)

60

to 6

2 Fi

ltere

d Cr

(VI),

tota

l ch

rom

ium

, Fie

ld p

aram

eter

s: pH

, SpC

, tem

pera

ture

, tu

rbid

ity, D

O

M

iddl

e pa

rt of

the

low

er R

UM

-con

finin

g la

yer

(22

to 2

3)

72.5

to 7

4.5

Filte

red

Cr(V

I), to

tal

chro

miu

m, F

ield

par

amet

ers:

pH, S

pC, t

empe

ratu

re,

turb

idity

, DO

Lo

wer

par

t of t

he lo

wer

RU

M-c

onfin

ing

laye

r (2

5.3

to 2

6)

83 to

85

Filte

red

Cr(V

I), to

tal

chro

miu

m, F

ield

par

amet

ers:

pH, S

pC, t

empe

ratu

re,

turb

idity

, DO

DOE/RL-2013-35-ADD13, REV. 0

23

Tabl

e 8. R

UM M

onito

ring

Well

199-

H3-3

4 Sam

ple C

ollec

tion

Est

imat

ed D

epth

to W

ater

(m [f

t] b

gs)

7.3

(24)

unc

onfin

ed, 1

3 (4

3) R

UM

Proj

ecte

d T

otal

Dep

th (m

[ft]

bgs

) 26

(85)

Med

ia

Sam

ple

Typ

e C

omm

ents

T

arge

t Geo

logi

c U

nit f

or

Sam

plin

g

Est

imat

ed

Sam

ple

Dep

th (m

[f

t] b

gs)

Ana

lyte

s/Phy

sical

Pr

oper

ties

Pu

mpe

d Po

st-de

velo

pmen

t U

pper

mos

t wat

er-b

earin

g un

it in

th

e RU

Mc

Scre

ened

inte

rval

es

timat

ed a

t 14

– 17

(45

– 55

)a

Alk

alin

ity, c

alci

um,

chlo

ride,

pho

spha

te, s

odiu

m,

filte

red

Cr(V

I), to

tal

chro

miu

m, m

agne

sium

, po

tass

ium

c Fi

eld

para

met

ers:

pH, S

pC,

tem

pera

ture

, tur

bidi

ty, D

O

a. O

ne sa

mpl

e is

to b

e co

llect

ed fr

om w

ithin

the

dept

h in

terv

al, t

arge

ting

the

geol

ogic

uni

t not

ed.

b. M

etal

s are

to b

e an

alyz

ed a

s filt

ered

onl

y fo

r sam

ples

col

lect

ed d

urin

g dr

illin

g if

the

sam

ple

turb

idity

is >

5 N

TU’s

. Filt

ered

and

unf

ilter

ed sa

mpl

es a

re to

be

colle

cted

for

post-

deve

lopm

ent e

vent

s. Cr

(VI)

is an

alyz

ed a

s a fi

eld-

filte

red

sam

ple

only

if th

e sa

mpl

e tu

rbid

ity is

> 5

NTU

s. c.

Fie

ld p

aram

eter

s and

con

stitu

ents

for a

naly

tical

sam

ples

in g

roun

dwat

er fo

r RU

M w

ells

are

defin

ed in

App

endi

x B

of D

OE/

RL-2

017-

13, R

emed

ial D

esig

n/Re

med

ial A

ctio

n W

ork

Plan

for t

he 1

00-D

R-1,

100

-DR-

2, 1

00-H

R-1,

100

-HR-

2, a

nd 1

00-H

R-3

Ope

rabl

e U

nits.

bg

s =

be

low

gro

und

surfa

ce

DO

=

diss

olve

d ox

ygen

N

TU

= ne

phel

omet

ric tu

rbid

ity u

nit

Rwie

=

Ring

old

Form

atio

n m

embe

r of W

oode

d Is

land

– u

nit E

RU

M

= Ri

ngol

d Fo

rmat

ion

uppe

r mud

Sp

C =

spec

ific

cond

ucta

nce

DOE/RL-2013-35-ADD13, REV. 0

24

Groundwater contaminants to be sampled in RUM wells include total chromium and Cr(VI). Technetium-99 (Tc-99), and uranium will also be sampled at well 199-H3-33 because it lies only 75 m (246 ft) north of the 183-H Solar Evaporation Basins. All sampling will be conducted as per Appendix B of DOE/RL-2013-30. Groundwater samples in the unconfined and RUM aquifer will include field water chemistry parameters.

Wells 199-D1-1 and 199-D2-14 (Figure 5) are located in an area in which the Cr(VI) plume is well defined and do not require samples to be collected during drilling. Therefore, only post-development, midscreen groundwater samples will be collected at these locations.

Figure 6 presents the geology and estimated sampling zones for well 199-H1-51, which will be an extraction well completed in the unconfined aquifer northwest of 100-H.

Well 199-H3-33 is to be installed as a RUM extraction well for Cr(VI) mass removal in 100-H (Figure 2). Figure 7 shows the estimated geology and sampling scheme for well 199-H3-33. The RUM aquifer at this location is expected at a depth of approximately 19 m (62 ft) below ground surface and range between 5 and 6 m (15 and 20 ft) in thickness. Screen lengths are expected to be 10 to 20 ft, dependent on sampling results. This borehole will be extended through the lower RUM water-bearing unit in order to determine the vertical extent of Cr(VI) contamination at this location. Deeper confined and semiconfined aquifers are often reducing environments and, therefore, special precautions should be taken to collect Cr(VI) samples with dissolved oxygen values ≥5 mg/L. Deep sampling at this location was deemed important because this well lies in the central portion of the highest Cr(VI) RUM plume concentration (≥100 μg/L) interpolation for 100-H. Radioisotope Tc-99 will be sampled as well as total uranium because of the borehole location near the 183-H Solar Evaporation Basins. Tc-99, and uranium are all known to have been associated with the 183-H Solar Evaporation Basins.

The geology at the location of well 199-H6-9 is expected to be similar to the geology encountered at well 199-H3-33 (Figure 8). Soil and water samples at well 199-H6-9 will be taken at similar depths as well 199-H3-33, but the 199-H6-9 borehole will not be advanced as deep, because it is in an area distal to the highest expected Cr(VI) concentrations and is not near any known waste sites. Well 199-H6-9 is to be installed as a RUM monitoring well for plume delineation in the south-eastern area of 100-H(Figure 2). No well design modifications are expected for this location.

Well 199-H3-34 (Figure 9) is to be installed as a RUM monitoring well for plume delineation in the northern area of 100-H (Figure 2). Depth to the RUM aquifer at this location is estimated to be about 13 m (43 ft) below ground surface. Screen length is expected to be 3 m (10 ft) because the RUM aquifer zone at this location is expected to be thinner than to the south. No well design modifications are expected for this location.

Figure 10 provides the generalized hydrogeology for the 100-HR-3 OU. Geologic zones where soil and water samples for chemical and/or physical analyses are to be collected are also indicated. Unconfined aquifer and vadose zone material is anticipated to be Hanford sand and gravel, with the 100-D Area having a layer of Ringold Formation member of Wooded Island – unit E (Rwie). The Hanford formation facies consists of moderately to very poorly sorted, large- to very large-, cobble- to boulder-sized clasts in open framework gravels that include discrete sand lenses, with little or no silt and clay-sized material. The Rwie is a dense, compact, and well-graded formation versus the looser, coarser-grained Hanford Site gravel-dominated facies. The Rwie is composed of fluvial matrix-supported gravels and sands with intercalated fine- to coarse-grained sand and silt layers. The silt zone noted on each figure represents the RUM material, although it may consist of clay. The uppermost water-bearing unit in the RUM (the RUM aquifer) is anticipated to consist of a silty sand material. The actual geologic material of each unit will be determined in the field.

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Figure 10. 100-HR-3 OU Generalized Hydrogeology

5 Analytical Requirements

Tables 9 through 11 present the analytical methods, field, laboratory QC elements, acceptance criteria, and preservation and holding time guidelines for laboratory analysis, respectively. The information presented in these tables supersedes similar material presented in DOE/RL-2013-35 and reflects current analytical standards.

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Table 9. Analytical Methods for the 100-HR-3 Groundwater OU

CAS Number Waste Constituent (Alternate Name) Analytical Methoda

PQL

Water (μg/L) (pCi/L)

Soil (μg/Kg) (pCi/g)

General Chemistry

ALKALINITY Alkalinity, total as CaCO3

EPA 310.1, Standard Method 2320, Standard Method 4500 5250 N/A

18540-29-9 Hexavalent chromium Standard Method 7196 5.0c 500

Anionsb

16887-00-6 Chloride

EPA 300, EPA 9056

400 55,000

16984-48-8 Fluoride 525 25,000

14797-55-8 Nitrate, as NO2 525 12,500

14265-44-2 Phosphate 787.5 5,000

14808-79-8 Sulfate 1050 27,500

Field Measurements

-- pH EPA 150.1, EPA 9040, Standard Method 4500 H+ N/A N/A

-- Dissolved oxygen EPA 360.1, Standard Method 4500 O N/A --

-- Specific conductance EPA 120.1, EPA 9050, Standard Method 2520 B-97 N/A --

-- Temperature EPA 170.1 N/A --

-- Turbidity EPA 180.1, Standard Method 2130 B N/A --

Metals

7440-70-2 Calcium 6010 1050 100,000

7440-47-3 Chromium 6020 10.5 1,000

7439-95-4 Magnesium 6010 1050 100,000

17439-96-5 Manganese 6020 10.5 1,000

7440-09-7 Potassium 6010 5250 500,000

7440-23-5 Sodium 6010 1050 100,000

7440-61-1 Uranium 6020 1.05 150

Radiochemistry

14133-76-7 Technetium-99 Liquid scintillation or gas proportional counting 50 5

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Table 9. Analytical Methods for the 100-HR-3 Groundwater OU

CAS Number Waste Constituent (Alternate Name) Analytical Methoda

PQL

Water (μg/L) (pCi/L)

Soil (μg/Kg) (pCi/g)

Physical Properties

N/A Grain size (sieve) analysis

Field procedure N/A N/A

N/A Porosity Calculation N/A N/A

N/A Sediment moisture content

ASTM D2216-19 N/A N/A

N/A Saturated hydraulic conductivity

ASTM D5084-16a for soil with low hydraulic conductivity (silt or a mud)

N/A N/A

N/A Permeability (calculated)

ASTM D2434-19 for soil with high hydraulic conductivity (sand or sandy

gravel)

N/A N/A

N/A Bulk density ASTM D2937-17e2 N/A N/A

N/A Calcium carbonate ASTM D4373-14 N/A N/A

Notes: Complete reference citations are provided in Chapter 5. Analytical methods and practical quantitation limits provided in this table do not represent EPA or Ecology requirements but are intended solely as guidance. Equivalent or updated Ecology accredited methods may be substituted for the methods identified in this table. a. For EPA Methods 180.1 and 300, see EPA/600/R-93/100, Methods for the Determination of Inorganic Substances in Environmental Samples. For EPA Methods 120.1, 150.1, 170.1, 310.1, and 360.1, see EPA-600/4-79-020, Methods for Chemical Analysis of Water and Wastes. For four-digit EPA methods, see SW-846, Test Methods for Evaluating Solid Waste: Physical/Chemical Methods Compendium. For standard methods, see APHA/AWWA/WEF, 2017, Standard Methods for the Examination of Water and Wastewater. b. Dilutions for certain ion chromatography constituents may be necessary, potentially raising the PQL above the limits provided. c. Low-level method used because of near-river monitoring that routinely produces results <10 μg/L of Cr(VI). CAS = Chemical Abstracts Service N/A = not applicable Ecology = Washington State Department of Ecology OU = operable unit EPA = U.S. Environmental Protection Agency PQL = practical quantitation limit

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Table 10. Laboratory QC Elements and Acceptance Criteria

Analytea QC Element

Acceptance Criteria

Corrective Action Water Soil

General Chemistry

Alkalinity MB <MDL <5% sample concentration Flag with “C”

LCS 80% to 120% recovery Flag with “o”b

DUP c or MS/MSDd ≤20% RPD ≤35% RPD Review datae

MS/MSDd 75% to 125% recovery Flag with “N”

EB, FTB <MDL <5% sample concentration Flag with “Q”

Field duplicatec ≤20% RPD --f Review datae

Hexavalent chromium MB <MDL <5% sample concentration Flag with “C”






Anions

Anions by ion chromatography MB <MDL

<5% sample concentration Flag with “C”






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Analytea QC Element

Acceptance Criteria

Corrective Action Water Soil

Metals

Metals by inductively coupled plasma/atomic emission spectrometry

MB <MDL <5% sample concentration Flag with “C”


DUPc or MS/MSDd ≤20% RPD ≤35% RPD Review datae




Metals by inductively coupled plasma/mass spectrometry

MB <MDL <5% sample concentration Flag with “C”


DUPc or MS/MSDd ≤20% RPD ≤35% RPD Review datae




Radiochemistry

Technetium-99 MB <MDC <5% sample activity concentration Flag with “B”

LCS 80% to 120% recovery or statistically derived limit g Flag with “o”b

DUPc ≤20% RPD ≤30% RPD Review datae

MS 75%-125% recovery Flag with “N”

EB, FTB <MDC <5% sample activity concentration Flag with “Q”

Field duplicatec <20% RPD --f Review datae

Notes: The information in this table does not represent EPA nor Ecology requirements; it is intended solely as guidance. This table applies only to laboratory analyses. Field measurements (e.g., pH, dissolved oxygen, specific conductance, temperature, and turbidity) are not listed because they are measured in the field. a. See Table 9 for a constituent list and analytical methods. b. The reporting laboratory will apply the “o” flag with SMR group concurrence. c. Applies when at least one result is greater than the laboratory PQL. d. Either a DUP or a MS/MSD is to be analyzed to determine measurement precision (if there is insufficient sample volume, a laboratory control sample duplicate is analyzed with the acceptance criteria defaulting to the <20% RPD criteria for water and ≤30% RPD for soil).

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Analytea QC Element

Acceptance Criteria

Corrective Action Water Soil e. After review, corrective actions are determined on a case-by-case basis. Corrective actions may include a laboratory recheck or flagging the data. f. A field duplicate RPD for soil is not recommended because of possible soil matrix heterogeneity effects. g. Laboratory determined statistically derived control limits based on historical data are used here. Control limits are reported with the data.

DUP = laboratory sample duplicate EB = equipment blank Ecology = Washington State Department of Ecology EPA = U.S. Environmental Protection Agency FTB = full trip blank LCS = laboratory control sample MB = method blank MDC = minimum detectable concentration

MDL = method detection limit MS = matrix spike MSD = matrix spike duplicate PQL = practical quantitation limit QC = quality control RPD = relative percent difference SMR = Sample Management and Reporting

Data flags: B, C = possible laboratory contamination: analyte was detected in the associated method blank – laboratory applied. The

B flag is used for organic analytes. The C flag is used for general chemical and inorganic analytes. N = result may be biased: associated matrix spike result was outside the acceptance limits (except gas chromatograph/mass

spectrometry) – laboratory applied. o = result may be biased: associated laboratory control sample result was outside the acceptance limits – laboratory

applied. Q = problem with associated field QC blank: results were out of limits – SMR review.

Table 11. Preservation and Holding Time Guidelines for Laboratory Analyses

Constituenta

Preservationb Holding Time

Water Soil Water Soil

General Chemistry

Alkalinity Store ≤6°C Store ≤6°C 14 days 14 days

Hexavalent chromium Store ≤6°C Store ≤6°C 24 hours

30 days before extraction

24 hours after extraction

Anions

Chloride, fluoride, sulfate Store ≤6°C Store ≤6°C 28 days 28 days

Nitrate, phosphate Store ≤6°C Store ≤6°C 48 hours

28 days before extraction

48 hours after extraction

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Table 11. Preservation and Holding Time Guidelines for Laboratory Analyses

Constituenta

Preservationb Holding Time

Water Soil Water Soil

Metals

Metals by inductively coupled plasma-atomic emission

spectrometry

Adjust pH to <2 with nitric acid N/A 6 months 6 months

Metals by inductively coupled plasma/

mass spectrometry

Adjust pH to <2 with nitric acid N/A 6 months 6 months

Radiochemicals

Tc-99 Adjust pH to <2 with HCl. N/A 6 months 6 months

Notes: Holding times and preservation methods are dependent on the constituent and are consistent with EPA guidance and approved analytical methods. Information in this table does not represent EPA or Ecology requirements; it is intended solely as guidance. The container type for a sample is available on the chain-of-custody documentation. This table applies only to laboratory analyses. Field measurements (e.g., pH, dissolved oxygen, specific conductance, temperature, and turbidity) are not listed because they are measured in the field. a. See Table 9 for constituent list and analytical methods. b. For preservation identified as stored at <6°C, the sample should be protected against freezing unless it is known that freezing will not impact the sample integrity. Ecology = Washington State Department of Ecology EPA = U.S. Environmental Protection Agency N/A = not applicable

6 Documentation and Reporting Field sampling and laboratory analytical documentation requirements are provided in Chapter 2 of DOE/RL-2013-35. Documentation of borehole drilling is described in Chapter 3 of DOE/RL-2013-35.

7 References APHA/AWWA/WEF, 2017, Standard Methods for the Examination of Water and Wastewater,

23rd Edition, American Public Health Association, American Water Works Association, and Water Pollution Control Federation, Washington, D.C.

ASTM D2216-19, 2019, Standard Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass, American Society for Testing and Materials, West Conshohocken, Pennsylvania.

ASTM D2434-19, 2019, Standard Test Method for Permeability of Granular Soils (Constant Head), American Society for Testing and Materials, West Conshohocken, Pennsylvania.

ASTM D2937-17e2, 2017, Standard Test Method for Density of Soil in Place by the Drive-Cylinder Method, ASTM International, West Conshohocken, Pennsylvania.

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ASTM D4373-14, 2014, Standard Test Method for Rapid Determination of Carbonate Content of Soils, American Society for Testing and Materials, West Conshohocken, Pennsylvania.

ASTM D5084-16a, 2016, Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter, American Society for Testing and Materials International, West Conshohocken, Pennsylvania.

DOE/RL-96-68, 2014, Hanford Analytical Services Quality Assurance Requirements Document, Rev. 4, Volume 1, Administrative Requirements; Volume 2, Sampling Technical Requirements; Volume 3, Field Analytical Technical Requirements; and Volume 4, Laboratory Technical Requirements, U.S. Department of Energy, Richland Operations Office, Richland, Washington. Available at: http://www.hanford.gov/files.cfm/DOE-RL-96-68-VOL1-04.pdf. http://www.hanford.gov/files.cfm/DOE-RL-96-68-VOL2-04.pdf. http://www.hanford.gov/files.cfm/DOE-RL-96-68-VOL3-04.pdf. http://www.hanford.gov/files.cfm/DOE-RL-96-68-VOL4-04.pdf.

DOE/RL-2013-30, 2016, Sampling and Analysis Plan for the 100-HR-3 Groundwater Operable Unit Monitoring, Rev. 0, U.S. Department of Energy, Richland Operations Office, Richland, Washington. Available at: https://pdw.hanford.gov/document/0076483H.

DOE/RL-2013-35, 2013, 100-HR-3 Groundwater Operable Unit Well Installation Sampling and Analysis Plan, Rev. 0, U.S. Department of Energy, Richland Operations Office, Richland, Washington. Available at: https://pdw.hanford.gov/document/0087915.

DOE/RL-2013-35-ADD12, 2019, 100-HR-3 Groundwater Operable Unit Well Installation Sampling and Analysis Plan, Addendum 12: Wells 199-D11-1, 699-98-50, 699-95-48B, 699-96-42B, 199-H4-94, and 199-H3-1, Rev. 0, U.S. Department of Energy, Richland Operations Office,Richland, Washington. Available at: https://pdw.hanford.gov/document/AR-03234.

Modified by: TPA-CN-1100, 2019, TPA Change Notice Form: DOE/RL-2013-35-ADD12, 100-HR-3 Groundwater Operable Unit Well Installation Sampling And Analysis Plan, Addendum 12: Wells 199-D11-1, 699-98-50, 699-95-48B, 699-96-428, 199-H4-94, and 199-H3-14, Rev. 0, dated December 18, U.S. Department of Energy, Richland Operations Office, and U.S. Environmental Protection Agency, Richland, Washington. Available at: https://pdw.hanford.gov/document/AR-03383.

DOE/RL-2017-13, 2019, Remedial Design/Remedial Action Work Plan for the 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units, Draft A, U.S. Department of Energy,Richland Operations Office, Richland, Washington. Available at:https://pdw.hanford.gov/document/0063944H.

ECF-HANFORD-18-0058, 2019, Practical Quantitation Limits for Groundwater Environmental Samples, Rev. 1, U.S. Department of Energy, Richland Operations Office, Richland, Washington. Available at: https://pdw.hanford.gov/document/AR-03420.

EPA-600/4-79-020, 1983, Methods for Chemical Analysis of Water and Wastes, Environmental Monitoring and Support Laboratory, U.S. Environmental Protection Agency, Cincinnati, Ohio. Available at: https://pdw.hanford.gov/document/D196019611.

EPA/600/R-93/100, 1993, Methods for the Determination of Inorganic Substances in Environmental Samples, Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio. Available at: http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=30002U3P.txt.

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EPA, Ecology, and DOE, 2018, Record of Decision Hanford 100 Area Superfund Site 100-DR-1, 100-DR-2, 100-HR-1, 100-HR-2, and 100-HR-3 Operable Units, U.S. Environmental Protection Agency, Region 10, Richland, Washington. Available at: https://pdw.hanford.gov/document/0065047H.

NAD83, 1991, North American Datum of 1983, as revised, National Geodetic Survey, Federal Geodetic Control Committee, Silver Spring, Maryland. Available at: https://www.ngs.noaa.gov/datums/horizontal/north-american-datum-1983.shtml.

SW-846, 2019, Test Methods for Evaluating Solid Waste: Physical/Chemical Methods Compendium, as updated, Office of Solid Waste and Emergency Response, U.S. Environmental Protection Agency, Washington, D.C. Available at: https://www.epa.gov/hw-sw846/sw-846-compendium.

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Michael W. Cline

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