WI0400576_More Information (Received)_20211112

Weston Solutions, Inc.
1400 Weston Way
West Chester, PA 19380
610-701-3000  Fax [phone]
www.westonsolutions.com

UIC Permit Application WI0400576
Cotton Mill Square, Greensboro NC
Response to Comments November 12, 2021
November 12, 2021
Mr. Michael Rogers
North Carolina Department of Environmental Quality
Division of Water Resources
UIC Program
1636 Mail Service Center
Raleigh, NC 27699-1636

Subject: UIC Permit Application WI0400576
Cotton Mill Square Site
801 Merritt Drive, Greensboro, North Carolina
NCDEQ Program ID NONCD0001551
Response to NCDEQ Comments

Dear Mr. Rogers,

Weston Solutions Inc. (Weston) is submitting this response to comments previously provided by
NCDEQ in an email dated October 27, 2021, associated with the above referenced UIC Permit
application. NCDEQ Staff reviewed the updated application with supplemental information
previously provided by Weston Solutions, Inc. (Weston) and has provided the following
comments/requests. Weston’s response to these comments is provided below. In addition, the
supporting documents referenced in our responses are also attached to this document.

1. NCDEQ COMMENT:
A 7.5 minute topographic map showing the subject site with injection zone was not included
with application. This is required per the permit application directions. Please submit.

WESTON RESPONSE:
A 7.-5-minute topographic map identifying the site and injection zone is attached to this
response.

2. NCDEQ COMMENT:
We need the well construction (schematic) of the proposed permanent wells to be installed
including casing, grout, sand pack, etc.

WESTON RESPONSE:
Schematic diagrams of proposed permanent wells with construction details (generic) are
attached (one for saprolite/transition zone wells and one for the bedrock well) to this response

Weston Solutions, Inc.
1400 Weston Way
West Chester, PA 19380
610-701-3000  Fax [phone]
www.westonsolutions.com

UIC Permit Application WI0400576
Cotton Mill Square, Greensboro NC
Response to Comments November 12, 2021

3. NCDEQ COMMENT:
There was no depiction of the injection zone or contaminate plumes in cross-section. There
was a small X-Section in the attached pilot study that was completed 2019, but this does not
meet the requirements of the application. Please provide geologic x-section maps showing
the plume(s) and injection zone.

WESTON RESPONSE:
Cross-sections depicting the injection area and site conditions are attached to this response.

4. NCDEQ COMMENT:
There was a reference to groundwater velocity in Attachment 2, but no values were given that
we could see. Please provide velocity for the 3 hydrostratigraphic units.

WESTON RESPONSE:
A summary table of seepage velocities by hydrostratigraphic unit is attached to this response
as Table 6 to Attachment 2.

5. NCDEQ COMMENT:
What steps will Weston Solutions take to assure there will be no daylighting of injectants
and/or accidental spills during the injection activity?

WESTON RESPONSE:
The injectate will be contained in 55-gallon steel drums and 50-pound bags. These
injectates will be loaded directly into the mix tank of the injection system, inside its self-
contained trailer. Polyethylene sheeting will be placed under the injection system trailer as a
secondary containment. The injection system is equipped with spill kits to immediately
contain and recover any potential spill.

Transducers will be used during the initial injections to verify distribution and the radius of
influence in adjacent monitoring wells and to adjust, if necessary, the injection parameters to
minimize the potential for daylighting. As an added precaution, plugs or packers will be
employed in adjacent monitoring wells to prevent possible surfacing.

Furthermore, as described in the UIC Permit Application, an alternate injection technique will
be employed in the shallow saprolite unit after completion of the deeper transition zone
injection points to reduce the risk of “daylighting”. This will involve injecting CAT 100 slurry
by advancing DPT rods with the basal injection tip directly into the saprolite, with injections
performed at 2 ft intervals (vertically) from approximately 25 to 35 ft bgs. These injection
points will be located approximately 7.5 feet apart, which allows the CAT 100 slurry to be
Weston Solutions, Inc.
1400 Weston Way
West Chester, PA 19380
610-701-3000  Fax [phone]
www.westonsolutions.com

UIC Permit Application WI0400576
Cotton Mill Square, Greensboro NC
Response to Comments November 12, 2021
injected using lower injection flow rates, which helps prevent daylighting, while still achieving
the overlap between injection points.

6. NCDEQ COMMENT:
The proposed sampling of the site 1 year after injection is insufficient to detect any possible
injection outside the injection zone. The monitoring plan (MP) needs to be revised to show a
pre-injection event, and then a frequency to adequately detect any injectants being pushed
outside the injection zone (i.e., monthly, quarterly, or semiannually). Also, the MP needs to
adequately detect any constituents of the additives, not just effectiveness of the remediation
progress. One of the constituents is ZVI. Some metals, including iron, need to be added to
the MP.

WESTON RESPONSE:
The Performance Monitoring (PM) will include a pre-injection sampling event followed by
annual sampling. The initial post-injection monitoring event will be conducted approximately
six months after the injections and then will be conducted annually thereafter for a period of
five years. A network of groundwater monitoring wells has been established for the site over
the years as part of the current Annual Monitoring Program. This annual monitoring well
network is shown in the attached figure with the downgradient performance monitoring wells
highlighted in relationship to the planned injection layout.

PM groundwater samples will be collected using low-flow sampling procedures and submitted
to a NCDEQ-approved laboratory for analysis. In addition to VOCs, these analytical
parameters for the PM wells will include total iron and visual observations for groundwater
discoloration (black water is a visual indicator of injectate migration) and will be used to assess
possible migration of the injectate outside the injection zone. Please note that the monitoring
wells nearest the injection points may be affected by the initial injections, so data collected
from PM wells farther downgradient of the injection zone (highlighted on the figure) will
provide the primary information used to assess possible injectate migration after placement.

7. NCDEQ COMMENT:
Other than the plume maps in plan view, there was not included on any of the maps any
information on sources of other potential contamination such as waste storage, treatment, or
disposal systems within the area of review of the injection well system. Please provide this
information. If there was none identified, please indicate this.

WESTON RESPONSE:
There are no waste storage, treatment, or disposal systems within the area of review of the
injection well system.

Weston Solutions, Inc.
1400 Weston Way
West Chester, PA 19380
610-701-3000  Fax [phone]
www.westonsolutions.com

UIC Permit Application WI0400576
Cotton Mill Square, Greensboro NC
Response to Comments November 12, 2021
8. NCDEQ COMMENT:
There were no potable or other water supply wells included on the table in Attachment
5. Please confirm that there were none identified in the area of the injection. If some are
identified, submit a revised table with these wells.

WESTON RESPONSE:
There are no potable or water supply wells in the vicinity of the injection area.

9. NCDEQ COMMENT:
We are still not clear who the permit will be issued to (Permittee). Will it be Nokia of
America? If so, we need something is writing from Nokia that Weston is signing the
application on their behalf.

WESTON RESPONSE:
The permittee for this UIC Permit Application is Weston Solutions, Inc.

Please feel free to contact me at [phone] or by email at [e-mail]
should have any immediate questions or comments regarding this document.

Best Regards,

WESTON SOLUTIONS, INC.

David S. Kane, P.G.
Project Manager

Enclosures

Cc: Gene Mao (Guilford County DPH)
Jay Motwani (WESTON)
Tom Drew (WESTON)

ATTACHMENTS

Imagery................................................NAIP, January 2010Roads..............................................©2006-2010 Tele AtlasNames...............................................................GNIS, 2010Hydrography.................National Hydrography Dataset, 2010Contours............................National Elevation Dataset, 2010
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A Z A L E A D RFOREST VALLEY RDEDNEY RIDGE RDE AVONDALE DRNORTHLINE AVE
G
R
A
C
E
W
O
O
D

D
R
HOWARD STMURRAYHILL RD
REHOBETH CHURCH RDOLD CHAPMAN STW MARKET ST
VILLA DRWILS HIRE DRWARREN STKENSINGTON RDK I R KMAN STDELLWOOD DRD U B L I N D R
LEXINGTON AVEHERTFORD STWYNNEWOOD DRTI
F
F
A
N
Y

P
L
UNION STSEMINOLE DR
BUCKINGHAM RD
NEW ORLEANS STW FRIENDLY AVE
G
R
E
C
A
D
E
S
TC O U N T RY CLUB DR
W I N C HESTER DRWOODLAND DR
W CORNWALLIS DR
W MONTCASTLE DRW MEADOWVIEW RD
W TERRELL STASHE STPEARSON STREID STBENNETT STN DUDLEY ST5TH AVEE BESSEMER AVE
E CORNWALLIS DRELECTRA DRVINE STBLUMENTHAL RD
LIB
E
R
T
Y

R
DACORN RDB O T H W E L L S T
TEXTILE DR
RYAN S T
EVERITT ST BANNER AVEWILEY LEWIS RDBEAVERBROOK DR
HIGH POINT RDWAYNE RDHILLTO
P

R
D SELLARS AVEBECKFORD DR
C L IFTON RDBRASSFIELD RDWESTMOU N T D R
OVERLAND HTS
MOSBY D R
WILEY DAVIS RDSAM SN E ED DR
FA R M INGTON DRVICTORY STVAL
L
E
YMEDE RDWATAUGA DRN HOLDEN RDCRESTWOOD DRYOW RDWALKER AVE
ONSLOW DRHILL-N-DALE DRSTRATFORD DR
W FRIENDLY AVE
FOUR SEASONS BLVDCAMDEN RDOVERBROOK DRMARTINSVILLE RDL E LAND DR
HARDIE STW GREENWAY DR N
ELWOOD AVE
MEADOW OAK DRW LEE STR O C K Y K NOLL RDFLOYD STPAMLICO DRWESTOVER TERBLANTON
PL
LYNHAVEN DRHIGHLAND AVEFAIRMONT STASBURY TERBEECHTREE RDROUND HILL RDK A L L A M D A L E R D
R
O
U
T
H

C
I
RMOBILE STN MENDENHALL STWEBSTER
R
D
CORLISS STORCHARD STHILL STBLAIR ST
SPICEWOOD DR
WOODLEA DRBILBRO STW WASHINGTON ST
S EUGENE STSUNSET D R
MEADOWBR O O K TERF
L
I
N
T

S
T
MAGNOLIA STBETHANY TRCES MURROW BLVDD E N N Y RD
BEECH STDEWE
Y

S
T
BURBANK STHIGH STWALNUT STWO
O
D
S
I
D
E

D
R
AVALON RDMARTIN AVES H A R PE RD
APACHE ST BYWOOD RDN OHENRY BLVDWILLARD STFAIRFAX RDAI
NS
WORTH D R
CABA R R US DR
B
A
R
D
WELL RDMEADE DRJEFFERSON RDHALIFAX RDKETTERING P LROLLINGWOOD D R
PINETOP RD BRANDYWINE DROSBORNE RDCEDAR FORK RDFOREST LAWN D R
K I L B O U R N E D RPARK TERMASONIC DR BEVERLY PLEDGEWATER DR
R
O
C
K
WOOD RDN ELAM AVEGREEN VALLEY RDCREEKDALE DR
H O L B R O O K S T
BRICE ST
SYLVAN RD
BERKLEY PL
COLISEUM BLVDN TREMONT DRN O R M A N D Y R D
O LD RAN DLEM A N RD
EARL DR PORTLAND STMYSTIC D RSTIRLING STHILLCREST DRKERSEY STGREGORY STWHI
L
D
E
N

P
L
MARSH STCLEBURNE STSAINT REG IS R D
DOAK ST
S ELM EUGENE STE TERR
E
LL STN GREENE STMARY E BLACK DRANDREW STTANKERSLEY DRSUMMIT AVEGOLDEN GATE DRPLEASANT GARDEN RDRIVERDALE RDLAR
K
I
N

S
T
ROSS AVE
TUSCALOOSA STPARK AVEMAPLE STSTEVENS STLAUREL ST16TH ST
E
S
I
DE DRCEASAR STPONDEROSA DRHUFFMAN STTUCKER STORANGE STIVY HTSPEAR ST
PHILLIPS A
V
E
OL
D
L
I
B
E
R
T
Y
R
D
E BESSEMER AVESYKES AVEBUNCOM B E D R
CHATEAU D
R
S T I R R U P D RNORWALK STGROOMETOWN RDG I L MORE DR
RAINTREE DR
TALLWOOD DR
R O C K HAVEN DRNEW GARDEN RDCRANBROOK STBREVARD ST
BROWN B A R K D R
OAKWOOD DRKEMP
R
D
E GREENWOOD DRM C C U I S T O N R DTOWN STVA N S T O R Y S T
S
H
O
L
D
E
N

R
DSERVOMATION RDDULAIRE RD
S T A R M O U N T D RW AVONDALE DRNORTHAMPTON DRSHALLOWFORD DRDENISE DRNORTHRIDGE STFAIRWAY DR
WESTMORELAND DR
S
H
A
D
Y LAWN DRISA
A
C
S

P
L
B R A N D ERW OOD DRRAINBOW
DR
C ARPENTER ST
W F L O R I D A STS ELAM AVES
U
R
R
Y
D
R
HIGHSTONE DR
OPAL DR
Q
U
AI
L DRFERNWOOD DR
P I S G A H C H U R C H R D
LE
N
D
E
W
S
T
OAK ST
GLENWOOD AVEHAYWOOD ST
L IB ERTY DRCOLLEGE AVEW NORTHWOOD STLAFAYETTE
A
V
E
LAKE FOREST DR
MEMPHIS STDILLARD STW LAKEFIELD DR
RA
N
D
L
E
M
A
N

R
D
WILL O U G H B Y BLVDPRIMROSE AV
E
CRIDLAND RDE VAND A LIA R D
EL
M
W
O
O
D

D
R
E J J DRROSELAND STALMA PINNIX DR
E B RA GG ST
W O O D L A KE DRBROOME RD
LOGANDALE C TTWINING
R
D
S
SID
E
BLVDFAIRVIEW STBR IS T O L RDMARSHALL STSPRY ST
DUNBAR STBALL STSUMMIT AVEWHITMAN RDM C K N I G H T M I L L RD
WILPA
R

D
RWHITE STS
A
N
D
S
D
R 16TH STSPRING STLIBER
T
Y RDPINE STPATIO PL
LAR K S PUR DRGATESVILLE RDHORSE PEN CREEK RDFARLIN AVEKINGS MILL RDKINGS POND RDFAIRFAX RDPEN
N
Y
D
A
L
E

D
R
CROSSTIMBERS DR
LAKEWOOD DRBRASSFIELD RD
MERRI
TT DRGLEN HOLLOW RDBOULEVARD STVIEWMONT DRLARSON STSWANNANOA DRDOWNING STWHITEHURST RD
DAYE DR
SPRINGBROOK DR
MILA
N
R
DNATHANAEL RDMADISON AVE
NEW HANOVE R D R
P H O E N I X D RCHERBONNE DRSHERWOOD STW CORNW ALLIS D RBENJAMIN PKWYN LINDELL RDP E M B R O K E R DKER Y DRVAN WERT STCLIFFWO
O
D DRMIMOSA DR
N AYCOCK STGLENH A V E N DRKENILWORTH STGARRETT STKIRK
PATRICK PL
SAVANNAH ST
HUDGINS DR
WALKER AVE
W MCGEE ST
C
O
L
O
NI
AL AVEMERED I T H D R
W B R A G G S TFULTON STBATTLEGROUND AVE
ERWIN ST
O CONNOR ST
W WHITTINGTON ST
LATHAM RD
ROCKFORD RD
BURTNER STARLINGTON STCAROLINA STWENTWORTH DR
VANCE STN ELM STHE
N
R
Y

S
T
E FLORIDA STDOUGLAS ST
E LEE STYANCEYVILLE STBRITTON STOMAHA STGORRELL ST
BENJAMIN BENSON STBOYD STJULIAN ST
PERKINS ST BERNARD STEDGEMONT RDLINCOLN STDELMAR DRBINGHAM STWINSTON STN EESE R DN ENGLISH STWAUGH STTILLERY DRLOMBARDY STROSE LAKE DRSU F F O LK TRL
K E N VIEW ST
ROMAINE STNEW GARDEN RDB R OMPTON DR
T O W E R R D
H
E
N
D
E
R
S
O
N
R
DSTARMOUNT DRWENC
H
E
LSA RDMERRYWEATHER RDW FRIENDLY AVE
WATKINS STHARV
A
R
D

A
V
EPEBBLE DRGRAMERCY RD
MA
N
C
H
ESTER PL
WOODVALE
DRSEVEN OAKS DRCASCADE DR
S P R IN G W O O D D R
S LIN
D
E
L
L
R
D
ALDERMAN DR
DEXTER AVEO A K L A N D AV E
GLENDALE DR
H A R L E Y DR
MA
R
T
H
A
S

P
LJAYCEE PARK DRLOURANCE BLVDO N T A R IO S T
MAYWOOD ST
ELLINGTON ST
DONE
G
A
L
DR RAVENDALE DRS TREMONT DRFREEMAN MILL RDGROVE STMAYFLOWER DRCA MP US DRCANTERBURY STTIPPERARY DRBEARS CREEK RDPRINCESS
A
N
N
ST
EFLAND DR
INDEPENDENCE RD
APPLE RIDGE RDATLANTA STMCIVER STWILTON DR
OLD T R E Y B R O O K E D RTATE STHAZEL LNG R EENG
A
TE DRLAWRENCE ST
SENEC A R D
PATTON AVE
FIELDS ST
I N D U S T R I AL AV E
BROAD AVE
N MUR
R
O
W BLVDE WASHINGTON ST
3RD ST
LOGAN STSLOAN ST
MEA
D
O
W

S
T
WESTSIDE DRS O HENRY BLVD SVC RDAMOS DRRANKIN RD
CORINTH DRR A N D A L L S T
MCCONNELL RD
WILEY LEWIS RDAUTUMN DRIRWIN STHOL
T
S

C
H
A
P
E
L

R
D
L
O
NGBROOK D RBORDERS TERBERNA
U

A
V
EWESTLAND DRMUIRS
CHAPEL
RDMONTPELIER DRPLUMMER DRKIPLING DRBOSTON RDMONTROSE DRF R A Z I E R R D
STAUNTON DR
W AVE
COR
N
E
L
L

A
V
EWAYCROSS DRKEMP RDWESTRIDGE RDCHA
TFIELD DRTENNYSON DRN HOLDEN RDPREDDY BLVDLAMROC RDDORSEY STWEDGEDALE AVEBELMAR STHOBBS RDMCDOWELL DRF
OREST LAWN DR
W VA N D A L I A R D
W MEADOWVIEW RD
STARMOUN
T

F
A
R
M
S

D
RDAVID CALDWELL DRROBIN HOOD DR
CHELTENHAM BLVDWESTBROOK STTULSA DRTUCSON DRRIDGEWAY DRLAW
N
D
A
L
E

D
R
MARKLAND DRLOVETT STW CONE BLVD
NEAL STGARLAND DRHUNTINGTON RDSHOFFNER CTSILVER AVEWALDRON DRLAKEFIELD DRN CEDAR STPRESCOTT STPARKMO N T DRW J J DRN EDGEWORTH STBELLEMEADE STWHARTON STSTURBRIDGE LN
N ELM ST
E WHITTINGTON STS ELM STE FRIENDLY AVE
MARTIN LUTHER KING JR DRSULLI
V
A
N

S
TE CO N E B L V D
S BENBOW RDLAW STN BENBOW RDANDOVER AVEGUEST ST
PICHARD STTWAIN RD
S ENGLISH STELMER STO W ENS ST
ARDMORE DRDANS RDJOSEPH M BRYAN BL
V
D
J O S E P H M BRYAN BLVD
W WENDOVER AVE
FREEMAN MILL RDW WENDOVER AVE E W E N D O V E R AVE
E LEE ST
S O HENRY BLVDN OHENRY BLVDW W E N D O VE R AVE
B
A
T
T
L
E
G
R
O
U
N
D
A
V
E
S OHENRY BLVDFreemon Lake
Benjamin Lake
RoundaLake Dam PegramLake
Mile Run Cr N Buffalo CrMuddy CrRyan CrS Buffalo Cr N Buffalo CrS Buffalo Cr
Ryan CrS B u f f a l o C r
LakeProperty
Buffalo Lake WhiteOak Lake
Greensboro CountryPark Lake Five A
PhiladelphiaLake
LakeHamilton
LakeEuphemia
RevolutionMill Reservoir
GreensboroColl
BennettColl forWomen
Univ of NCarolina atGreensboro
N CarolinaA & TState Univ
GreenHill Cem
PiedmontMemorialCem
Cone Cem
GREENSBORO
GREENSBORO
Pomona
HighlandPark West
Bessemer
SunsetHills
RockyKnoll
IrvingPark
ScottPark
HamiltonLakes
LathamTown
Pinecroft
North Hyde Park
Westerwood
FisherPark
Revolution
WhiteOak
EastWhite OakMcAdooHeights
TerraCotta
StarmountForest
PiedmontHeights
Kirkwood
OakGrove
Proximity
Sedge-Town
Oakwood
LindleyPark
Edgeville
LakeDaniel
LathamPark
Broadview
Vandalia
NochoPark
Fairfield
Glenwood
Rankin
PisgahHill
36°
830
39
39
39
79°
87
89
94
95
02
50'
606
07 47'
47'
000
6 6
45'
39
39
85
91
5'
07'30"
FEET
00'
FEET
85
88
96
6 1 11
39
39
39
39
N
39
39
30"
90
91
N
6
03
1
50'
30"
6
45'
39
36°
2'
00'
FEET
36°
98
39
000m
602
6
04
08
08 770 6
79°
3992
30"
07'
39
39
000m
6
30"11 12
12
39
89
000m
39
000
52'
92
93
52'
30"
30"
6
000 06
07 6
6 E
39
93
98
36°
2'
79°
30"
39
39
03 04 750 FEET 6 6
6
6
79°
87
88
90
95
5'
39
39
39
86
97
E 6 09
10 000m
39
39
860
86
96
000
NORTHCAROLINA
QUADRANGLE LOCATION
GREENSBORO QUADRANGLENORTH CAROLINA-GUILFORD CO.7.5-MINUTE SERIES
GREENSBORO, NC
2016
Expressway Local Connector
ROAD CLASSIFICATION
Ramp 4WD
Secondary Hwy Local Road
Interstate Route State RouteUS RouteWX./H
GREENSBORO, NC
2016
ROAD CLASSIFICATION
Check with local Forest Service unitfor current travel conditions and restrictions.
FS Primary Route FS High Clearance RouteFS PassengerRouteª«­▬Interstate Route State RouteUS RouteWX./H
Expressway Local Connector
Ramp 4WD
Secondary Hwy Local Road
U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY

1 Summerfield
8 Climax
2 Lake Brandt3 Browns Summit4 Guilford5 McLeansville6 High Point East7 Pleasant Garden
ADJOINING QUADRANGLES
1 2 3
4 5
6 7 8
This map was produced to conform with the National Geospatial Program US Topo Product Standard, 2011.A metadata file associated with this product is draft version 0.6.19
CONTOUR INTERVAL 10 FEETNORTH AMERICAN VERTICAL DATUM OF 1988
SCALE 1:24 000
1000 500 0 METERS 1000 2000
21KILOMETERS00.51
1 0.5 0
MILES
1
1000 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
FEET
Imagery..................................................NAIP, July 2014Roads................................ U.S. Census Bureau, 2015 - 2016Names..........................................................GNIS, 2016Hydrography....................National Hydrography Dataset, 2014Contours............................National Elevation Dataset, 2008Boundaries............Multiple sources; see metadata file 1972 - 2016
Wetlands.........FWS National Wetlands Inventory 1977 - 2014
North American Datum of 1983 (NAD83)World Geodetic System of 1984 (WGS84). Projection and1 000-meter grid: Universal Transverse Mercator, Zone 17S
Produced by the United States Geological Survey
10 000-foot ticks: North Carolina Coordinate System of 1983
This map is not a legal document. Boundaries may begeneralized for this map scale. Private lands within governmentreservations may not be shown. Obtain permission beforeentering private lands.
North American Datum of 1983 (NAD83)World Geodetic System of 1984 (WGS84). Projection and1 000-meter grid: Universal Transverse Mercator, Zone 17S
Produced by the United States Geological Survey
10 000-foot ticks: North Carolina Coordinate System of 1983
This map is not a legal document. Boundaries may begeneralized for this map scale. Private lands within governmentreservations may not be shown. Obtain permission beforeentering private lands.
Imagery<IMG_LEADER><IMG_CITATION>Roads<TRANS_LEADER> U.S. Census Bureau, 2015 - 2016Roads within US Forest Service Lands.............FSTopo Data with limited Forest Service updates, 2012 - 2016Names...............................................................GNIS, 2016Hydrography<HYDRO_LEADER>National Hydrography Dataset, <HYDRO_DATE>Contours<HYPSO_LEADER><HYPSO_CITATION>Boundaries............Multiple sources; see metadata file 1972 - 2016<OPTIONAL_CITATIONS>Wetlands.........FWS National Wetlands Inventory 1977 - 2014
U.S. National Grid
100,000-m Square ID
Grid Zone Designation
PV
17S
^
ØMN
GN
UTM GRID AND 2016 MAGNETIC NORTHDECLINATION AT CENTER OF SHEET
0° 42´12 MILS
8° 29´151 MILS
*7643016378799*NSN.7643016378799NGA REF NO.USGSX24K18426
WELL CONSTRUCTION LOG
Well ID:
CLIENT:of
SITE NAME:
DRILLING CO.:
LOGGED BY:
Northing (UTM Zone YY, meters)
Easting (UTM Zone XX, meters)
GND Elevation (ft msl)
TOC Elevation (ft msl)
completed as flush-mount well
Lithologic Unit of Completion:
( ) Saprolite/Overburden
( ) Transition zone
( ) Bedrock Boring Diameter (in)
Well Diameter (in)
Riser Material
Date Developed:
Vol. Purged:
Purge Rate:
Top of Bentonite/Sand Seal
Top of Sand
Top of Screen
Screen Material
Screen Length (ft)
Screen Slot (in)
Bottom of Screen
Total Boring Depth
ft bgs feet below gal. Gallons
ground surface gpm Gallons Per Minute
Depths are presented as feet below ground surface unless otherwise indicated.
gpm
Comments:
gal.
Well Construction:
DEPTH TO WATER (ft bgs):
TOTAL WELL DEPTH (ft bgs):
Page 1 1
DATE OF WELL CONSTRUCTION:
MANAGERS DESIGNERS/CONSULTANTS
®
Well‐Const_Template
WELL CONSTRUCTION LOG
Well ID:
CLIENT:of
SITE NAME:
DRILLING CO.:
LOGGED BY:
Northing (UTM Zone YY, meters)
Easting (UTM Zone XX, meters)
GND Elevation (ft msl)
TOC Elevation (ft msl)
completed as flush-mount well
Lithologic Unit of Completion:
( ) Saprolite/Overburden
( ) Transition zone
( ) Bedrock Boring Diameter (in)
Well Diameter (in)
Riser Material
Date Developed:
Vol. Purged:
Purge Rate:
Top of Bentonite/Sand Seal
Top of Sand
Top of Screen
Screen Material
Screen Length (ft)
Screen Slot (in)
Bottom of Screen
Total Boring Depth
ft bgs feet below gal. Gallons
ground surface gpm Gallons Per Minute
Depths are presented as feet below ground surface unless otherwise indicated.
gpm
Comments:
gal.
Well Construction:
DEPTH TO WATER (ft bgs):
TOTAL WELL DEPTH (ft bgs):
Page 1 1
DATE OF WELL CONSTRUCTION:
MANAGERS DESIGNERS/CONSULTANTS
®
Well‐Const_Template
21P-0221-3
Figure 1
Plan View Cross Sections
A-Aʼ , B-Bʼ , and C-Cʼ
Cotton Mill Square Facility
Greensboro, North Carolina
C’C’
CC
A
A’/B’
A
A’/B’
BB
FIGURE 2 CROSS SECTION A-A’
880
810
730
820
830
840
860
800
710
870
850
790
780
770
760
750
740
720
700
880
810
730
820
830
840
860
800
710
870
850
790
780
770
760
750
740
720
700Elevation (ft - MSL)2.3
17( )
460
670( )
370
4,300( )
1,600
6,600( )970J
4,500J( )
380
450( )
DW-02-d1
IW-207
DW-16-d2
SMW-01 BMW-01
TZMW-01
A
A’CAT 100Saprolite
Legend
Transition Zone
BedrockGroundwater Elevation
in Well - November 2020
Monitoring Well Screen
TCE/1,1-DCE Concentration, µg/L,
November 2020, and September 2021 for
SMW-01, TZMW-01, and BMW-01
(not sampled in November 2020 for VOCs).
J - Indicates Estimated Value
Open Borehole
CAT 100 Targeted
Injection Interval
100’200’0
Saprolite
Transition Zone
Bedrock
21P-0221
FIGURE 3 CROSS SECTION B-B’
2.3
17( )
0.62
2.0( )
190
6,100( )
DW-03-d1
EW-501
DW-16-d2
CAT 100Saprolite
Legend
Transition Zone
BedrockGroundwater Elevation
in Well - November 2020
Monitoring Well Screen
TCE/1,1-DCE Concentration, µg/L,
November 2020
Open Borehole
CAT 100 Targeted
Injection Interval
100’200’0
Saprolite
Transition Zone
Bedrock
21P-0221-1
880
810
730
820
830
840
860
800
710
870
850
790
780
770
760
750
740
720
700
880
810
730
820
830
840
860
800
710
870
850
790
780
770
760
750
740
720
700Elevation (ft - MSL)B
B’
FIGURE 4 CROSS SECTION C-C’
0.62
2.0( )
ND
ND( )
MW-46-i
EW-501
CAT 100
100’200’0
Saprolite
Transition Zone
Bedrock
21P-0221-2
1,600
6,600( )
460
670( )
370
4,300( )
SMW-01 BMW-01
TZMW-01
EW-506
14
9.8( )
880
810
730
820
830
840
860
800
710
870
850
790
780
770
760
750
740
720
700
880
810
730
820
830
840
860
800
710
870
850
790
780
770
760
750
740
720
700Elevation (ft - MSL)C’C
Legend
Saprolite
Transition Zone
BedrockGroundwater Elevation
in Well - November 2020
Monitoring Well Screen
TCE/1,1-DCE Concentration, µg/L,
November 2020, and September 2021 for
SMW-01, TZMW-01, and BMW-01
(not sampled in November 2020 for VOCs).
ND - Not Detected
CAT 100 Targeted
Injection Interval
Table 6
Seepage Velocities
Cotton Mill Square
Greensboro NC
UIC Permit App. #WI0400576
Unit / Water
Bearing Zone
K-Value
Low
(ft/day)
K-Value
High
(ft/day)
K-value
(Geomean)
Effective
Porosity
Avg.
Hydraulic
Gradient
(dh/dl)
Seepage
(ft/day) -
Low
Seepage
(ft/day) -
High
Seepage
(ft/day)
Geomean
Saprolite 0.210 0.310 0.240 0.2 0.0160 0.017 0.025 0.019
Transition Zone 7.660 12.700 9.470 0.2 0.0140 0.536 0.889 0.663
Bedrock 1.750 2.250 2.020 0.2 0.0220 0.193 0.248 0.222
Notes
ft/day -feet per day
dh/dl - the change in hydraulic head over the change of distance
Table of Seepage Velocities October 2021
!B
)B
)B
!B
)B
)B )B
)B
!B )B
!B
!B
!B !B
!B
!B
!B
!B
"/
"/
!.
!.
!B!B)B
!B
!B
!B
!B
!B
!B
!B)B
!B)B
N O R F O L K & S O U T H E R N R A IL R O A D
T
rib
uta
ry
A
Tributary BSouth Buffalo Creek
P a tte r s o n S tMerritt DrH a lif a x R d
I m m a n u e l R d
H e w it t S t
Clifton Rd
Im m anuel R dRadcliff Rd
Merritt DrClermont StDayton StGentry St
PMW-2
TMW-1
SMW-01TZMW-01BMW-01
DW-03-d1
DW-05-d1
DW-07-i
DW-10-d1
DW-11-d1 DW-15-d1
DW-16-d2
DW-18-i DW-19-d1
MW-03-s
MW-14-s
MW-36-s MW-37-s
MW-46-i
MW-49-i
MW-50-i
MW-51-i
EW-508
EW-513IW-201
IW-207
MW-614
MW-600
MW-603
MW-605
MW-602
MW-608
MW-609
MW-612
MW-613
/
Figure 3-4
Proposed Monitoring NetworkRemedial Action Plan Addendum - 2021
Cotton Mill Square FacilityGreensboro, North C arolin a
File: Y:\C MS\MXD\MW_SW_Proposed_Monitoring_Network.mxd, 2/15/2021 11:42:40 AM, johna
PMW-2 Sa prolite/Shallow Overburde n Wells
0 300 600
Feet
1 inch = 300 Feet
Scale in Feet
Legend
!.Former Injection We ll
"/Former Extraction We ll
)B Be drock Monitor Well
!B Sa prolite Monitor Well
!B Tra nsition Zo ne Mo nitor Well
Cotton Mill Squ are Prop erty Bounda ry
Ap proximate L ocation
for New Well Clu ster
IW-207 Tra nsition Zon e Wells
MW-609 Be drock Wells
!(
!(