NC0038377_CSA Figures_20171101

148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
ES1 - MAYO
10/09/2017
10/29/2017 2:37 PM P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\3D SCM\Mayo_3D_ES1.dwg
FIGURE ES-1
APPROXIMATE EXTENT OF IMPACTS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
PROGRESS
MAYO
LAKE
MAYO LAKE ROAD
BOSTON RD. (HIGHWAY 501)1981 C & D
LANDFILL
MAYO STEAM
ELECTRIC PLANT
SURFICIAL
TRANSITION ZONE
VISUAL AID ONLY -
DEPICTION NOT TO SCALE
NORTH
BEDROCK
CRUTCHFIELD
BRANCH
ASH
BASIN
ASH BASIN WASTE BOUNDARY
GENERALIZED GROUNDWATER FLOW DIRECTION
APPROXIMATE LANDFILL WASTE BOUNDARY
NOTE:
1.OCTOBER, 2016 AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON
SEPTEMBER 27, 2017, DATED JUNE 13, 2016.
2.STREAM FROM WSP SURVEY, 2014.
3.GENERALIZED GROUNDWATER FLOW DIRECTION BASED ON APRIL 10, 2017 WATER LEVEL
DATA.
4.PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY.
5.GENERALIZED AREAL EXTENT OF MIGRATION REPRESENTED BY NCAC 02L EXCEEDANCES.
STREAM WITH FLOW DIRECTION
RESIDENTIAL UNIT
DUKE ENERGY PROPERTY BOUNDARY
LEGEND
AREA OF CONCENTRATION IN GROUNDWATER
ABOVE NC2L (SEE NOTE 5)
INFERRED AREA OF CONCENTRATION IN GROUNDWATER
ABOVE NC2L (SEE NOTE 5)
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:JOHN CHASTAIN
FIG1-1_SITELOC
08/16/2015
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO SiteLocationMap.dwg
FIGURE 1-1
SITE LOCATION MAP MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
CONTOUR INTERVAL:
MAP DATE:
10 FEET
1968 2000
GRAPHIC SCALE
1000
IN FEET
10000
SOURCE:
1984 U.S. GEOLOGICAL SURVEY TOPO QUAD,
CLUSTER SPRINGS, VA QUADRANGLE, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA
PHONE [phone]
www.synterracorp.com
RALEIGH
WILMINGTON
GREENVILLE
GREENSBORO
PERSON COUNTY
MAYO LAKEFUTU
R
E
R
AI
L
R
O
A
D
Y
A
R
D
ASH BASIN 1981 C&D
LANDFILL
US HWY 501 (BOSTON RD)RAIL
R
O
A
D
Y
A
R
D
US HWY 501(BOSTON RD)PLANT ACCESS ROA
D
MAYO STEAM ELECTRIC
PLANT PARCEL LINE
VA-NC STATE LINE
POWER PLANT
ASH BASIN
WASTE
BOUNDARY
HA
U
L

R
O
A
D
ASH BASIN
COMPLIANCE
BOUNDARY
<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<RAILROADR.O.W. 100'
1981 C&DLANDFILL
ASH BASIN
LOUISIANA PACIFIC CORPORATION
MAYO PLANT
CCP MONOFILL(PERMIT 7305)
MAYO LAKE
FGDPONDS
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)RAILROADRAILROADR T HESTER RD
SUGARTREE LNDEAN LNN POINTE DRBETHEL HILL SCHOOL RDM U L L I N S L N
FONTAINE RDOLD US HWY 501WOODYS STORE RD
M A Y O L A K E R D
US HWY 501BOSTON RDFIGURE 2-1MAYO PLANT VICINITY MAPMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. ROBINSONCHECKED BY: K. DONOVANPROJECT MANAGER: J. WYLIE
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Plant Vicinity Map.mxd
GRAPHIC SCALE6000600 1,200300
IN FEET
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<STREAM
NOTES:PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:JOHN CHASTAIN
FIG 2-2 (1968 MAP)
08/16/2015
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO 1968 USGS TOPO MAP.dwg
FIGURE 2-2
1968 USGS TOPOGRAPHIC MAP
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
CLUSTER SPRINGS VA-NC QUADRANGLE
CONTOUR INTERVAL:
MAP DATE:
10 FEET
1968 2000
GRAPHIC SCALE
1000
IN FEET
10000
SOURCE:
USGS TOPOGRAPHIC MAP OBTAINED FROM NRCS GEOSPTIAL DATA GATEWAY AT
http://datagateway.nrcs.usda.gov/
RALEIGH
WILMINGTON
GREENVILLE
GREENSBORO
PERSON COUNTY
FUTU
R
E
R
AI
L
R
O
A
D
Y
A
R
D
US HWY 501 (BOSTON RD)FUTURE
M
A
Y
O

L
A
K
E

R
D
FUTURE
MAYO LAKE
FUTURE
ASH BASIN FUTURE
1981 C&D
LANDFILL
FUTURE PLANT
ACCESS ROAD
MAYO STEAM ELECTRIC
PLANT PARCEL LINE
VA-NC STATE LINE
FUTURE
POWER PLANT
FUTURE
ASH BASIN
WASTE
BOUNDARY
FUTURE
MONOFILL
PROGRESS
HIGHWAY 501
100' RIGHT-OF-WAY FUTURE RAILROADFUTURE
FGD PONDS
GRAPHIC SCALE
500
IN FEET
0 500 1000
SOURCE:
MARCH 25, 1948 AERIAL PHOTOGRAPH OBTAINED FROM THE USGS EARTH EXPLORER WEB SITE AT
http://earthexplorer.usgs.gov/
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
FIG 2-3 (1948 AERIAL)
08/11/2015
10/25/2017 6:24 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO HISTORICAL AERIALS.dwg
FIGURE 2-3
1948 AERIAL PHOTOGRAPH
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
FUTURE M
A
Y
O

L
A
K
E

R
D
CURRENT US HWY 501R T
HESTER
RD
FUTU
R
E
R
AI
L
R
O
A
D
Y
A
R
D
CURRENT US HWY 501M
A
Y
O

C
R
E
E
K
MAYO
C
R
E
E
K
CRUTCHFIELD BRANCHCRUTCHFIELD BRANCHHIGH
P
L
AI
N
S
R
D
FUTURE
MAYO LAKE
FUTURE
ASH BASIN
FUTURE
1981 C&D
LANDFILL
FUTURE PLANT ACC
E
S
S

R
O
A
D
MAYO STEAM ELECTRIC
PLANT PARCEL LINE
VA-NC STATE LINE
FUTURE POWER PLANT
FUTURE
ASH BASIN
WASTE
BOUNDARY
FUTURE MAYO LAKE
BOUNDARY
VA-NC STATE LINE
FUTURE US HWY 501 (BOSTON RD)FUTURE 100'
RIGHT-OF-WAYFUTURE RAILROADPROGRESS
GRAPHIC SCALE
500
IN FEET
0 500 1000
SOURCE:
JANUARY 24, 1981 AERIAL PHOTOGRAPH OBTAINED FROM THE USGS EARTH
EXPLORER WEB SITE AT http://earthexplorer.usgs.gov/
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
FIG 2-4 (1981 AERIAL)
08/11/2015
10/25/2017 6:24 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO HISTORICAL AERIALS.dwg
FIGURE 2-4
1981 AERIAL PHOTOGRAPH
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
FUTURE M
A
Y
O

L
A
K
E

R
D
CURRENT US HWY 501R T
HESTER
RD
FUTU
R
E
R
AI
L
R
O
A
D
Y
A
R
D
CURRENT US HWY 501M
A
Y
O

C
R
E
E
KMAYO CREEKHIGH
P
L
AI
N
S
R
D
CRUTCHFIELD BRANCHCRUTCHFIELD BRANCHFUTURE
MAYO LAKE
FUTURE
ASH BASIN
1981 C&D
LANDFILL
FUTURE PLANT ACC
E
S
S

R
O
A
D
MAYO STEAM ELECTRIC
PLANT PARCEL LINE
VA-NC STATE LINE
POWER PLANT
FUTURE
ASH BASIN
WASTE
BOUNDARY
FUTURE MAYO LAKE
BOUNDARY
VA-NC STATE LINE
FUTURE US HWY 501 (BOSTON RD)FUTURE 100'
RIGHT-OF-WAYFUTURE RAILROAD
GRAPHIC SCALE
500
IN FEET
0 500 1000
SOURCE:
1993 AERIAL PHOTOGRAPH OBTAINED FROM THE USGS EARTH EXPLORER WEB SITE AT
http://earthexplorer.usgs.gov/
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
FIG 2-5 (1993 AERIAL)
08/11/2015
10/25/2017 6:24 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO HISTORICAL AERIALS.dwg
FIGURE 2-5
1993 AERIAL PHOTOGRAPH
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
FUTURE M
A
Y
O

L
A
K
E

R
D
OLD US HWY 501R T
HESTER
RD
RAIL
R
O
A
D
Y
A
R
DOLD US
HWY
501MAYO CREEKCRUTCHFIELD BRANCHHIGH
P
L
AI
N
S
R
D
ASH BASIN
1981 C&D
LANDFILL
PLANT ACCESS ROA
D
MAYO STEAM ELECTRIC
PLANT PARCEL LINE
VA-NC STATE LINE
POWER PLANT
ASH BASIN
WASTE
BOUNDARY
VA-NC STATE LINE
MAYO LAKE
US HWY 501 (BOSTON RD)100' RIGHT-OF
-
W
A
YRAILROAD
GRAPHIC SCALE
500
IN FEET
0 500 1000
SOURCE:
1993 AERIAL PHOTOGRAPH OBTAINED FROM THE USGS EARTH EXPLORER WEB SITE AT
http://earthexplorer.usgs.gov/
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
FIG 2-6 (2008 AERIAL)
08/11/2015
10/25/2017 6:24 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO HISTORICAL AERIALS.dwg
FIGURE 2-6
2008 AERIAL PHOTOGRAPH
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINAUS HWY 501 (BOSTON RD)OLD US HWY 501R T
HESTER
RD
RAIL
R
O
A
D
Y
A
R
DOLD US
HWY
501MAYO CREEKCRUTCHFIELD BRANCHHIGH
P
L
AI
N
S
R
D
ASH BASIN
1981 C&D
LANDFILL
PLANT ACCESS ROA
D
MAYO STEAM ELECTRIC
PLANT PARCEL LINE
VA-NC STATE LINE
POWER PLANT
ASH BASIN
WASTE
BOUNDARY
VA-NC STATE LINE
MAYO LAKE
MAYO LAKE ROAD
100' RIGHT-OF
-
W
A
YRAILROAD
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comFIGURE 2-7NPDES FLOW DIAGRAMMAYO STEAM ELECTRIC PLANT DUKE ENERGY PROGRESS, LLC ROXBORO, NORTH CAROLINASource: NPDESPermit No. NC 0038377 (October 2014)
RAILROAD
RAI
LROAD
RAI
LROADHAUL RD10/27/2017 1:34 PMP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP BASE MAP.dwgDATE PRINTED:FILE PATH:FIGURE 2-8SITE LAYOUT MAPMAYO STEAM ELECTRIC PLANT10660 BOSTON RDROXBORO, NORTH CAROLINADUKEENERGYPROGRESSFIG 2-8 (SITE LAYOUT MAP)KYLE DONOVANJOHN CHASTAIN\ C. NEWELLPROJECT MANAGER:LAYOUT NAME:DRAWN BY:CHECKED BY:JERRY WYLIEDATE:DATE:www.synterracorp.com148 River Street, Suite 220Greenville, South Carolina 29601864-421-9999GRAPHIC SCALE600300150030010/17/201710/17/2017BG-2CW-5MW-5BRMW-14BRBG-1MW-13BRCW-4MW-2CW-3MW-3BRMW-16BRMW-16DMW-16SCW-2CW-2DS-3S-10S-8CW-6MW-6BRMW-4S-1AS-2S-2BS-2AMW-3MW-8BRMW-8SMW-8DMW-9BRLMW-9BRCW-1DCW-1MW-18DMW-18BRMW-19BRMW-19DS-4S-1S-5ABMW-3SABMW-3ABMW-1ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4SABMW-4STORM WATEROUTFALL 004STORM WATEROUTFALL 005SW-CBT1SW-CB1SW-CB2SB-4SB-3SB-2SB-6SB-5AB-1P2AP1AP1P2P3P4P3AP4ASB-1MY-05MY-03CRUTCHFIELD BRANCHUNNAMED BRANCHBOX CULVERTCULVERT48" CMPVIRGINIANORTH CAROLINAVIRGINIANORTH CAROLINAGRATEGRATE24" RCPFORMER POND BASED ON 1968USGS TOPOGRAPHIC MAPFORMER INTERMITTENT STREAM BASEDON 1968 USGS TOPOGRAPHIC MAPSOU
T
H

B
O
S
T
O
N

R
D

(
U
S

H
W
Y

5
0
1
)FORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHFORMER CRUTCHFIELD BRANCH(PERENNIAL) BASED ON 1968USGS TOPOGRAPHIC MAPFORMER INTERMITTENTSTREAM BASED ON 1968USGS TOPOGRAPHIC MAPFORMER INTERMITTENT STREAM BASEDON 1968 USGS TOPOGRAPHIC MAPFORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHMW-12SSW-REF1S-7S-6S-9FORMER SLUICE POINTSMW-10BRMAYO LAKEWL ± 433'ASH BASIN1981 C&D LANDFILLMW-7BRMW-7DFGD FORWARDFLUSH PONDMW-15BRDEP-2DEP-3DEP-1MW-11BRBGSB-3BGSB-5BGSB-9BGSB-2BGSB-8BGSB-1BGSB-4MY-1002MY-1001MY-1003NPDES OUTFALL 002MW-17BRSTORM WATEROUTFALL 006ASTORM WATEROUTFALL 006BSTORM WATEROUTFALL 006ESTORM WATEROUTFALL 006DSTORM WATEROUTFALL 006CCULVERTCULVERTHEADWALL-48" RCP48" RCP APPROXIMATENPDES OUTFALL 002CMF #1CMF #2DIDICOAL PILEPOWER PLANTRAW WATER INTAKE15"18"RT HESTER RDHAUL RDHAUL RDHAUL RDMAYO LAKE RDMAYO LAKE RDRAILROAD
CAR
STORAGERAILROAD
CAR
STORAGETRAIN STOPRA
I
L
R
O
A
D

L
I
N
E RAILROAD LINEFORMER INTERMITTENT STREAM BASEDON 1968 USGS TOPOGRAPHIC MAPVIRGINIANORTH CAROLINAB
B'AA'AA'SECTION LOCATIONFORMER INTERMITTENT STREAM BASEDON 1968 USGS TOPOGRAPHIC MAPFORMER INTERMITTENT STREAM BASEDON 1968 USGS TOPOGRAPHIC MAPCRUTCHFIELD BRANCHBEAVER PONDMW-12DSB-7AB-4AB-2AB-3FGD SETTLING PONDPRIMARY AND SECONDARYSETTLING PONDSFORMER POND BASED ON 1968USGS TOPOGRAPHIC MAPFORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHFOREBAYSOURCE NOTES:NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDSTO LOCATE THE STREAMS AND WETLANDS IN THE FIELD. THE HORIZONTAL LOCATION AND THE VERTICALLOCATIONS HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.LEGENDCULVERT LOCATION500 ft COMPLIANCE BOUNDARYPARCEL LINE DUKE ENERGY (APPROXIMATE)ASH BASIN WASTE BOUNDARYSURFACE WATER FLOW DIRECTIONAPPROXIMATE STREAM (NON-JD)APPROXIMATE POND OR RESERVOIR (NON-JD)APPROXIMATE EFFLUENT CHANNELAPPROXIMATE ASH BASIN PONDED WATERC
C'MW-3MW-12SWELL IN TRANSITION ZONEWELL IN SAPROLITE MATERIALWELL IN ALLUVIUM MATERIALMW-14BRWELL IN COMPETENT BEDROCKABMW-1WELL IN ASH PORE WATERPIEZOMETER IN BEDROCKDEP-1MW-3WATER SUPPLY WELL SAMPLED BY NC DEQSW-CB1SURFACE WATER SAMPLE LOCATIONMY-03SOIL BORING LOCATIONSB-3PIEZOMETER IN EARTH DAM (FILL)P1AS-16AOW SAMPLE LOCATIONTHE TOPOGRAPHY IS A COMPILATION OF LIDAR DATA OBTAINED FROM FRIS- NORTH CAROLINA FLOOD RISKINFORMATION SYSTEM AT ftp://ftp1.ncem.org/Data_Requests/County_LIDAR_Data/Personcounty/ AND ANAERIAL TOPOGRAPHIC SURVEY-MAYO PLANT BY WSP, DATER JULY 24, 2015, JOB NUMBER: 1570002.00, DWGNAME: MAYO OVERALL WK.DWG100' RIGHT OF WAY
FIGURE 3-1KNOWN SAMPLE OF ASH FOR COMPARISON(SOURCE: DUKE ENERGY 2014)MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINA148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comDRAWN BY: E. KINSEYPROJECT MANAGER: J. WYLIELAYOUT: DATE: AUGUST 2017FILEPATH: P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\FiguresRange (10th percentile – 90th percentile) in bulk composition of fly ash, bottom ash, rock, and soil. (Source: EPRI 2009a)
FIGURE 3-2ELEMENTAL COMPOSITION FOR BOTTOM ASH, FLY ASH, SHALE, AND VOLCANIC ASH (SOURCE: EPRI 2009A)MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINA148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comDRAWN BY: E. KINSEYPROJECT MANAGER: J. WYLIELAYOUT: DATE: AUGUST 2017FILEPATH: P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
FIGURE 3-3COAL ASH TCLP LEACHATE CONCENTRATION RANGES COMPARED TO REGULATORY LIMITS(SOURCE: EPRI 2010)MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINA148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comDRAWN BY: E. KINSEYPROJECT MANAGER: J. WYLIELAYOUT: DATE: AUGUST 2017FILEPATH: P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
RAIL
R
O
A
D
Y
A
R
D
PLANT ACCESS ROAD
VA-NC STATE LINE
ASH BASIN
WASTE BOUNDARY
HAUL R
O
A
D
ASH BASIN
MAYO STEAM ELECTRIC
PLANT PARCEL LINE
1981 C&D
LANDFILL
ASH BASIN
COMPLIANCE BOUNDARY
US HWY 501 (BOSTON RD)HIGHWAY 501
100' RIGHT-OF-WAY
ASH
BASIN
FGD
PONDS
MAYO
LAKE
POWER
PLANTRAILROAD
FIGURE 4-1
USGS MAP WITH WATER SUPPLY WELLS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
GRAPHIC SCALE
1000
IN FEET
0 1000 2000
SOURCE:
2016 USGS TOPOGRAPHIC MAP (CLUSTER SPRINGS, VA-NC 1:24000) OBTAINED FROM THE USGS MAP STORE AT
http://store.usgs.gov/b2c_usgs/b2c/start/%%%28xcm=r3standardpitrex_prd%%%29/.do
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
J. WYLIE
DATE:B. YOUNG
FIG 4-1(2016 USGS TOPO MAP)
10/20/2017
10/25/2017 5:41 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSA SUP 2016 USGS TOPO MAP.dwg
LEGEND
WATER SUPPLY WELL - LOCATION VERIFIED
WATER SUPPLY WELL - LOCATION NOT VERIFIED
PROGRESS
<<<<<<<<<<<<<<<<<<<<<<<<<
<
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<
<
<<<<<R.O.W. 100'
FGD
PONDS
ASH BASIN 1981 C&D
LANDFILLCCP MONOFILL
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE
(APPROXIMATE)R
T
HEST
ER RDBOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
R A ILR O A DRAILROAD R A IL R O A D
LOUISIANA PACIFIC
CORPORATION
PLANT ACCESS ROAD
MAYO LAKE
MAYO PLANT
CRUCTHFIELD
BRANCH
UNNAMED BRANCH
M A Y O L A K E R D
MY-3
MY-5
MY2013-RAW
MY-7
MY-1001
MY-1002
MY-1003
MY2003-RAW
MY-1000
MY-1004MY2016-RAW
FIGURE 4-2
WATER SUPPLY WELL LOCATIONS AND DATA
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINADRAWN BY: B. YOUNG
PROJECT MANAGER: J. WYLIE
CHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Water Supply Map.mxd
1,000 0 1,000 2,000500
GRAPHIC SCALE IN FEET
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
OCTOBER, 2016 AERIAL PHOTOGRAPHY OBTAINED FROM USDA NRCS GEOSPATIAL DATA GATEWAY (https://gdg.sc.egov.usda.gov.GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
WATER SUPPLY WELL SAMPLED BY NCDEQ (2015)
OR BY DUKE ENERGY (2017)
WATER SUPPLY WELL NOT SAMPLED
(LOCATION VERIFIED)
WATER SUPPLY WELL NOT SAMPLED
(LOCATION NOT VERIFIED)
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
HALF-MILE RADIUS OF COMPLIANCE BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANT
SITE BOUNDARY
Notes:
- Bold highlighted concentration indicates exceedance of the 15A NCAC 02L Standard, Appendix 2, April 1, 2013. SU = Standard Units
umhos/cm = micro mhos per centimeter
< = concentration not detected at or above the reporting limit. NTU = Nephelometric Turbidity Unit
^ = NC DHHS Health Screening Level. mg/L = milligrams per liter
NE = Not established ug/l = microgram per liter
Deg C = Degrees Celsius
* - Interim Maximum Allowable Concentrations (IMACs) of the 15A NCAC 02L Standard, Appendix 1, April, 1, 2013.
Reporting Units S.U. mV mg/L umhos/cm NTUs mg/L mg/L mg/L ug/L mg/L mg/L ug/L mg/L mg/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L mg/L ug/L ug/L ug/L ug/L mg/L ug/L mg/L ug/L ug/L ug/L Deg C mV mg/L
15A NCAC 02L Standard 6.5-8.5 NE NE NE NE NE NE NE 700 NE 250 NE 250 500 NE 1* 10 700 4* 2 10 10 1* 1000 300 15 NE 50 1 NE 100 NE 20 NE 0.2* 0.3* 1000 NE NE NE
Provisional Background Threshold Values (Surficial Unit) 4.9-6.5 NE NE NE NE 13 13 NE 50 2.89 3.3 25 1.6 85 566 1 1 19 1 1 0.088 3.23 1.02 1.9 385 1 0.753 253 0.2 3.15 3.03 3.78 1 5.49 0.2 0.974 227 NE NE 5
Provisional Background Threshold Values (Transition Zone Unit) 5.7-6.5 NE NE NE NE 302 302 NE 50 59.2 33.3 391 7.5 430 490 1 1 78.3 1 1 1.26 6 1 5 1319 1 13.5 298 0.2 1 5 3.61 1 53.3 0.2 5.88 12 NE NE 5
Provisional Background Threshold Values (Bedrock Unit) 5.0-7.3 NE NE NE NE 223 223 NE 50 73.3 43 418 18 340 536 1 1 97 1 1 0.4 7 1.19 5 2550 1 13.1 544 0.05 13.1 5 6.56 1 72.6 0.2 5.52 37.9 NE NE 5
MY-03 (Vendor) 12015 Boston Road Roxboro, NC 27574 Water Bedrock 36.54107000 -78.90237000 08/19/2015 5.6 NM 5.48 261 <1 26.9 26.9 <2.5 <5 22 32.2 391 55.6 226 <10 <0.5 <0.5 60.4 <0.2 <0.08 0.13 0.6 <0.5 132 <50 5.9 2.64 8 <0.2 <0.5 1.2 1.16 1.3 30.7 <0.1 <1 31.1 18 NM <5
MY-05 (Vendor) Roxboro Road DB446/309 in Alton, VA Water Bedrock 36.54224000 -78.90265000 05/04/2015 7.1 NM 1.80 572 1.5 <5 <5 <5 <50 84.8 39.7 621 5.7 349 430 <5 <5 54.5 <2 <0.8 <0.03 <5 <5 41.9 953 2.7 4.83 517 <0.2 <5 <5 8.35 <5 <0.5 <1 <10 <50 16 NM <5
MY-07 (Vendor) 1025 Woody Loop Water Bedrock 36.54619000 -78.90144000 09/01/2015 6.1 NM 7.07 85 <1 37 37 <2.5 <5 7.49 5.5 106 2.7 88 <10 <0.5 <0.5 30 <0.2 <0.08 0.63 0.86 <0.5 67.8 <50 1.8 2.41 0.78 <0.2 3.8 1.5 1.4 <0.5 9.66 <0.1 2.5 36.4 18 NM <5
MY-1000 1044 Woody Loop Rd, Alton, VA 24520 Water Unknown 36.54587000 -78.90361000 1/18/2017 7.0 NM 2.70 294 <1 132 132 <2.5 <25 36.1 9.1 474 12.2 152 NA <0.5 0.15 43.5 <0.1 <0.08 0.046 <0.5 <0.1 6.8 83.1 1.1 9.16 67.8 <0.2 14.8 0.64 3.74 <0.5 13.4 <0.1 <0.3 84.4 NM NM <5
MY-1001 682 Old US 501 Hwy, Roxboro, NC 27574 Water Unknown 36.52052000 -78.90183000 1/17/2017 6.3 NM 5.00 144 1.8 71.8 71.8 <2.5 <25 18.3 2.5 91.9 <2 93 NA <0.5 <0.1 8.9 <0.1 <0.08 1.2 1.5 <0.1 47 163 1.1 2.89 4.9 <0.2 <0.5 1.2 1.56 <0.5 8.08 <0.1 2.2 342 NM NM <5
MY-1002 582 Old US 501 Hwy, Roxboro, NC 27574 Water Unknown 36.51943000 -78.90294000 1/17/2017 6.0 NM 5.50 72 <1 32.7 32.7 <2.5 <25 <0.2 2.8 <0.5 2.1 47 NA <0.5 <0.1 <0.3 <0.1 <0.08 2 1.5 <0.1 22.7 81.3 0.56 <0.01 <0.5 <0.2 <0.5 <0.5 0.072 <0.5 17.1 <0.1 <0.3 48.3 NM NM <5
MY-1003 209 Mullins Rd Roxboro NC 27574 Water Unknown 36.51933000 -78.90014000 4/12/2017 6.4 261 0.50 314 1.6 145 145 <2.5 <25 38.4 8.5 107 15.6 237 <10 <0.5 0.23 20.3 <0.1 <0.08 <0.025 <0.5 0.22 4.1 504 0.64 8.51 586 <0.2 <0.5 0.72 6.76 <0.5 13.5 <0.1 0.42 140 NM 56 <5
MY-1004 11167 Huell Matthews Hwy, Alton, VA 24520 Water Unknown 36.55175000 -78.88918000 1/18/2017 7.6 NM 5.50 781 <1 300 300 <2.5 <25 0.307 40.6 1.4 48.1 485 NA <0.5 0.14 <0.3 <0.1 <0.08 0.14 <0.5 <0.1 74.7 <50 1.4 0.147 <0.5 <0.2 1.1 <0.5 1.22 <0.5 199 <0.1 6.2 46.4 NM NM <5
MY-2003-RAW 11243 Huell Matthews Hwy Alton VA 24520 Water Unknown 36.54854222 -78.89874935 7/10/2017 6.3 NM NM NM <0.5 19.5 19.5 <2.7 <25 12.7 33.4 262 2.1 121 <10 <0.5 <0.1 150 <0.1 <0.08 0.093 <0.5 <0.1 8.6 50.7 0.19 3 6.2 <0.2 1 1.4 2.1 <0.5 15.2 <0.1 0.46 153 NM NM <5
MY-2016-RAW 11171 Huell Matthew Hwy, Alton VA 24520 Water Unknown 36.55177000 -78.89740000 7/10/2017 6.2 NM NM NM <0.5 46.7 46.7 <5.3 <25 23.7 33.3 336 1.9 231 <10 <0.5 <0.1 122 <0.1 0.18 0.69 1.3 <0.1 5 <50 3.4 4.8 10.7 <0.2 <0.5 1.7 2.4 <0.5 22.3 <0.1 0.88 141 NM NM <5
FIELD PARAMETERS
Total
Suspended
Solids
Bicarbonate
AlkalinityAlkalinity
WATER QUALITY PARAMETERS
WATER QUALITY PARAMETERS
FIELD PARAMETERS
Thallium
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
Carbonate
Alkalinity
Oxidation
Reduction
Potential
TemperatureArsenicAntimony IronCopperCobaltChromiumChromium
(VI)
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
Total
Dissolved
Solids
SulfateStrontiumChlorideCalciumBoron
SELECTED 40CFR257 APPENDIX III CONSTITUENTS plus Sr
INORGANIC PARAMETERS (TOTAL CONCENTRATION)
SeleniumPotassiumNickelMolybdenumMercuryManganeseMagnesiumLead SodiumAluminum ZincVanadiumCadmiumBerylliumBariumSample ID Sample
Media TurbiditySpecific
Conductance
Dissolved
OxygenEhpHLocation Description Well Screen
Location
Sample
Collection
Date
LongitudeLatitude
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: R. FALTA
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
FIGURE 4-3
WATER SUPPLY WELL
CAPTURE ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
WATER SUPPLY WELLS
WELL CAPTURE ZONE PARTICLE TRACKS
FORWARD PARTICLE TRACKS
(FROM WITHIN ASH BASIN)
LEGEND
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
MODIFIED BY: R. ISHAM
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
FIGURE 5-1
REGIONAL GEOLOGIC MAP
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
Source: Modified from Chapman, M.J., Clark, T.W., and Williams, J.H. 2013, Geophysical Logging and Geologic Mapping Data in the Vicinity of the GMH Electronics
Superfund Site Near Roxboro, North Carolina. USGS Data Series 763; Reston, VA.
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: EPRI, 2004
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
FIGURE 5-2
PIEDMONT SLOPE-AQUIFER
SYSTEM
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
Source: A Master Conceptual Model for Hydrogeological Site Characterization in
the Piedmont and Mountain Region of North Carolina. North Carolina Department of
Environment and Natural Resources, Division of Water Quality, Groundwater
Section, 2004.
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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MAYO C R E E K
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
BAIRD CTHIGH PLAINS RDOLD US HWY 501MULLINS LNNEW MAYO DR
R T H
E
S
T
E
R R
D
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
BG-1
BG-2
CW-1
CW-1D
CW-2 CW-2D
CW-3
CW-4
CW-5
CW-6
S-1
S-2
ABMW-1 ABMW-2ABMW-2BR
ABMW-3
ABMW-3S
ABMW-4ABMW-4BR
ABMW-4D
MW-2
MW-3
MW-3BR
MW-4
MW-5BR
MW-6BR
MW-7BR
MW-7D
MW-8BRMW-8D
MW-8S
MW-9BR
MW-10BR
MW-11BR
MW-12D
MW-12S
MW-13BR
MW-14BR
MW-15BR
MW-16BR
MW-16D
MW-16S
ABMW-2BRL
MW-17BR
NOTES:NORTH CAROLINA GEOLOGIC BOUNDARIES MODIFED TO CORRESPOND WITHSYNTERRA FIELD OBSERVATIONS. MAP BASED ON GEOLOGIC SHAPEFILES OBTAINEDFROM THE USGS. USGS OPEN-FILE REPORT 2005-1323, PRELIMINARY INTEGRATEDGEOLOGIC MAP DATABASE FOR THE UNITED STATES: ALABAMA, FLORIDA, GEORGIA,MISSISSIPPI, NORTH CAROLINA AND SOUTH CAROLINA, DATED 2007.(https://pubs.usgs.gov/of/2005/1323/)
VIRGINIA GEOLOGIC BOUNDARIES WERE NOT MODIFIED, AND ARE SHOWN FORREFERENCE. GEOLOGIC FEATURE CLASSES OBTAINED FROM THE USGS. OPEN-FILEREPORT 2005-1325. PRELIMINARY INTEGRATED GEOLOGIC MAP DATABASE FOR THEUNITED STATES: DELAWARE, MARYLAND, NEW YORK, PENNSYLVANIA, AND VIRGINIA.(http://pubs.usgs.gov/of/2005/1325/)
SHADED RELIEF MAP BASED ON LIDAR DEM 20 DATA FROM NORTH CAROLINA FLOODRISK INFORMATION SYSTEM ACCESSED ON JANUARY 2, 2015.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
OCTOBER, 2016 AERIAL PHOTOGRAPHY OBTAINED FROM USDA NRCS GEOSPATIALDATA GATEWAY (https://gdg.sc.egov.usda.gov.GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 6-1GENERALIZED GEOLOGIC MAPMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Generalized Geologic Map.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
NORTH CAROLINA GEOLOGIC UNITS
CZfg - FELSIC MICA GNEISS(CHARLOTTE TERRANE)
CZfv - FELSIC / MAFIC METAVOLCANIC ROCK(CAROLINA TERRANE)
VIRGINIA GEOLOGIC UNITS
Zh - PROTEROZOIC METAVOLCANIC SCHIST
di - PROTEROZOIC QUARTZ DIORITE
&<MONITORING WELL
#*TOE DRAIN
WATER SUPPLY WELL
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<STREAM
LEGEND
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:JOHN CHASTAIN
SECTION A-A'
09/01/2017
10/27/2017 5:27 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP X-SECTIONS.dwg
FIGURE 6-2
GENERAL CROSS-SECTION A-A'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
PROFILE BASED ON HISTORIC
USGS TOPOGRAPHIC MAPRAILROADASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
BOSTON RD (US HWY 501)DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
VERTICAL EXAGGERATION 5X
REGOLITH
ASH
BEDROCK
1981
LANDFILL
FORMER CHANNEL OF
CRUTCHFIELD BRANCH
PROFILE BASED ON HISTORIC
USGS TOPOGRAPHIC MAP
MAYO LAKE
ASH BASINTOP OF DAM 488'
ASH
TOP OF DAM 444
WATER ELEVATION=433
PROFILE BASED ON HISTORIC
USGS TOPOGRAPHIC MAP
GENERALIZED GROUNDWATER
FLOW DIRECTION
PROFILE BASED ON HISTORIC
USGS TOPOGRAPHIC MAP
GENERALIZED
GROUNDWATER
FLOW DIRECTIO
N
WATER ELEVATION=480'
BEDROCK
REGOLITH
REGOLI
T
H
BEDROCK
GENERALIZED GROUN
D
W
A
T
E
R
FLOW DIRECTION
A A'
NORTHWEST SOUTHEAST
MY-3MY-5GROUNDWATERDIVIDEGROUNDWATERDIVIDEGROUNDWATERDIVIDECW-5MW-5BRMW-14BRMW-4MW-18DMW-18BRMW-19BRMW-19DASH BASIN
CRUTCHFIELD
BRANCH
MAYO LA
K
E

R
D
RAIL
R
O
A
D
T
R
A
C
K
S
SOUTH BOSTON RD (US HWY 501)A'
A
POWER PLANT
0 125 250 500
HORIZONTAL SCALE: 1" = 500'
VERTICAL SCALE: 1" = 100'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION:
SURFICIAL FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
TRANSITION ZONE FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
BEDROCK FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
ASH FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
NOTE:
CROSS SECTION A-A' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE MEASURED JUNE 19 - 20, 2017.
2.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
PROGRESS
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:JOHN CHASTAIN
SECTION B-B'
10/17/2017
10/27/2017 5:29 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP X-SECTIONS.dwg
FIGURE 6-3
GENERAL CROSS-SECTION B-B'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
ASH BASIN WASTE BOUNDARY
VERTICAL EXAGGERATION 5X
ASH
ASH BASIN
BEDROCK
PROFILE BASED ON 1968
USGS TOPOGRAPHIC MAP
WATER ELEVATION=480
GENERALIZED GROU
N
D
W
A
T
E
R
FLOW DIRECTION
B B'
SOUTHWEST NORTHEAST
RAILROAD TRACKRAILROAD TRACKRAILROAD TRACKASH BASIN DAMCW-2CW-2DDEP-2MY-1001ASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
MW-16BRMW-16DMW-16SEARTHEN DAM
(FILL)ABMW-3SABMW-3ASH
COAL PILE AREA
PZ-4PZ-4ASMALL STREAM
BEDROCK
CRUTCHFIELD
BRANCH
TRANS
I
T
I
O
N
ALLUVIUM
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
TRANSITION
SAPROLITEMW-12SMW-12DSAPROLITEPLANT ACCESS ROADTOP OF DAM 488ABMW-2BRLABMW-2BRABMW-2BEDROCK
TRANSITION
ASH BASIN
CRUTCHFIELD
BRANCH
MAYO LA
K
E

R
D B'RAIL
R
O
A
D
T
R
A
C
K
S
SOUTH BOSTON RD (US HWY 501)GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
BPOWER PLANT
0 125 250 500
HORIZONTAL SCALE: 1" = 500'
VERTICAL SCALE: 1" = 100'
5X VERTICAL EXAGGERATIONMAYO LAKE RDLEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
NOTE:
CROSS SECTION B-B' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
SURFICIAL FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
TRANSITION ZONE FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
BEDROCK FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
ASH FLOW LAYER GROUNDWATER
WELL WATER LEVEL ELEVATION
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION:
NOTES
1.GROUNDWATER WELLS WERE MEASURED JUNE 19 - 20, 2017.
2.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
PROGRESS
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ABMW-4484.51ABMW-4BR484.8
ABMW-4D484.47
MW-3BR421.46
MW-8D432.84
MW-10BR500.09
MW-12D556.58
MW-14BR503.2
MW-15BR405.57
MW-16S367.59
MW-17BR455.84
MW-9BRLNA
MW-19DNA
ABMW-1NA ABMW-2482.79ABMW-2BR482.5
ABMW-3S482.8
MW-5BR500.25 MW-6BR450.79
MW-7BR444.59
MW-7D442.55 MW-8BR431.38
MW-8S437.01
MW-9BR466.47
MW-11BR490.42
MW-12S556.25
MW-13BR499.28
MW-16BR367.47
MW-16D367.67
ABMW-2BRL482.14 MW-18DNA
MW-18BRNA
MW-19BRNA
MW-2434.05
MW-3377.36
MW-4492.14
BG-1510.48
BG-2512.11
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CW-2375.08 CW-2D373.57
CW-3420.62
CW-4429.21
CW-5499.68
CW-6449.13
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1
P1A
P2
P2A
P3
P3A
P4
P4A
FIGURE 6-4GENERALIZED WATER LEVEL MAPNOVEMBER 2-3, 2016MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, NOVEMBER 2-3. 2016.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
&<&<
&<&<
&<&<
&<&<
&
&
&
<
<
<
&
&
<
<
&
&&&&
&&&
&
&
&
&&
&&&
&
&
&
&&
&
&
&
&&&
&
&
&
&
&
&&
<
<<<<
<<<
<
<
<
<<
<<<
<
<
<
<<
<
<
<
<<<
<
<
<
<
<
<<
&&
&&
&
&
&
&
<<
<<
<
<
<
<
540
530
550
520
370
510
500
490 410420430380450
440460400470390
480
ABMW-1NA ABMW-2482.79
ABMW-2BR
ABMW-4484.51
MW-5BR
MW-7BR
MW-9BR
MW-10BR
MW-12D MW-12S556.25
MW-16BR
MW-18D MW-18BR
MW-19DABMW-4BR
ABMW-4D
MW-3BR
MW-6BR
MW-7D MW-8BR
MW-8D
MW-11BR
MW-13BR
MW-14BR
MW-15BR
MW-16D
ABMW-2BRL
MW-17BR
MW-9BRL
MW-19BR
MW-2
MW-4
ABMW-3482.84
ABMW-3S482.8
MW-8S437.01
MW-16S367.59
BG-2
BG-1
MW-3377.36
CW-1
CW-2
CW-4
CW-6
CW-1D
CW-2D
CW-3
CW-5
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1
P1A
P2 P2A
P3
P3A
P4 P4A
FIGURE 6-5SURFICIAL WATER LEVEL MAPNOVEMBER 2-3, 2016MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, NOVEMBER 2-3. 2016.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
&<&<
&<&<
&<&<
&<&<
&
&
&
<
<
<
&
&
<
<
&
&&&&
&&&
&
&
&
&&
&&&
&
&
&
&&
&
&
&
&&&
&
&
&
&
&
&&
<
<<<<
<<<
<
<
<
<<
<<<
<
<
<
<<
<
<
<
<<<
<
<
<
<
<
<<
&&
&&
&
&
&
&
<<
<<
<
<
<
<
440450490
550 490460
540470530
520 480490
500 370510
450
4404604304704204104003 80390480 440ABMW-1
ABMW-2BR
ABMW-4BR
MW-5BR
MW-7BR
MW-8BR
MW-11BR
MW-12S
MW-16S
ABMW-2
ABMW-3
ABMW-3S
ABMW-4
MW-3BR
MW-6BR
MW-8S
MW-9BR
MW-10BR
MW-13BR
MW-14BR
MW-15BR
MW-16BR
ABMW-2BRL
MW-17BR
MW-9BRL
MW-18BR
MW-19BR
CW-1471.54
CW-2375.08
CW-3420.62
ABMW-4D484.47
MW-7D442.55
MW-8D432.84
MW-12D556.58
MW-16D367.67
MW-18DNA
MW-19DNA
MW-3
MW-4
MW-2
BG-1
BG-2512.11
CW-5
CW-6
CW-1D
CW-2D
CW-4
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1
P1A
P2
P2A
P3
P3A
P4 P4A
FIGURE 6-6TRANSITION ZONE WATER LEVEL MAPNOVEMBER 2-3, 2016MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, NOVEMBER 2-3. 2016.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
&<&<
&<&<
&<&<
&<&<
&
&
&
<
<
<
&
&
<
<
&
&&&&
&&&
&
&
&
&&
&&&
&
&
&
&&
&
&
&
&&&
&
&
&
&
&
&&
<
<<<<
<<<
<
<
<
<<
<<<
<
<
<
<<
<
<
<
<<<
<
<
<
<
<
<<
&&
&&
&
&
&
&
<<
<<
<
<
<
<
4
9
0
480
490
500450 430510440460500490370490
5105
0
0 4104 8 0380400390430
460
4
9
0
440
470
4
8
0
490
4
8
0
480
470 450450470 460 450
420CW-1
CW-2
CW-3
ABMW-1 ABMW-2
ABMW-4
MW-8S
MW-16D
MW-18D
MW-19D
ABMW-3
ABMW-3S
ABMW-4D
MW-7D MW-8D
MW-12DMW-12S
MW-16S
CW-1D471.41
CW-2D373.57
CW-4429.21
CW-5499.68
CW-6449.13
ABMW-2BR482.5
ABMW-4BR484.8
MW-3BR421.46
MW-5BR500.25
MW-6BR450.79
MW-7BR444.59
MW-8BR431.38
MW-9BR466.47
MW-10BR500.09
MW-11BR490.42
MW-13BR499.28
MW-14BR503.2
MW-15BR405.57
MW-16BR367.47
ABMW-2BRL482.14
MW-17BR455.84
MW-9BRLNA
MW-18BRNA
MW-19BRNA
MW-3
MW-2434.05
MW-4492.14
BG-2
BG-1510.48
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1
P1A
P2
P2A
P3
P3A
P4
P4A
FIGURE 6-7BEDROCK WATER LEVEL MAPNOVEMBER 2-3, 2016MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, NOVEMBER 2-3. 2016.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
&<&<
&<&<
&<&<
&<&<
&
&
&
<
<
<
&
&
<
<
&
&&&&
&&&
&
&
&
&&
&&&
&
&
&
&&
&
&
&
&&&
&
&
&
&
&
&&
<
<<<<
<<<
<
<
<
<<
<<<
<
<
<
<<
<
<
<
<<<
<
<
<
<
<
<<
&&
&&
&
&
&
&
<<
<<
<
<
<
<
4
9
0
480
550490500500510 4903704905
0
0
5104104204803804003904 3 0 440
4
6
0 4504905 2 0
5 3 0
5 4 0
460
4504404304204504504504904904
8
0
440450
460
470
4
8
0
4
9
0
ABMW-1480.2 ABMW-2482.9ABMW-2BR482.68 ABMW-3482.88
ABMW-3S482.92
ABMW-4484.72ABMW-4BR484.98
ABMW-4D484.69
MW-3BR420.94
MW-5BR501.17 MW-6BR450.26
MW-7BRABANDONED
MW-7DABANDONED MW-8BR431.23
MW-8D431.7 MW-8S437.02
MW-9BR465.15
MW-10BR499.95
MW-11BR491.27
MW-12D556.81 MW-12S556.54
MW-13BR499.69
MW-14BR503.12
MW-15BR405.04
MW-16BR365.36
MW-16D365.72MW-16S367.28
ABMW-2BRL482.36
MW-17BR455.51
MW-18D492.96
MW-9BRLNA
MW-18BR496.71
MW-19BR486.31
MW-19D487.59
MW-2434.45
MW-3377.31
MW-4491.98
BG-1510.47
BG-2511.31
CW-1471.17 CW-1D471.01
CW-2374.98 CW-2D373.44
CW-3420.34
CW-4429.31
CW-5501.16
CW-6450.07
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1
P1A
P2
P2A
P3
P3A
P4P4A
FIGURE 6-8GENERALIZED WATER LEVEL MAPJUNE 19-20, 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, JUNE 19-20, 2017.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
&<&<
&<&<
&<&<
&<&<
&
&
&
<
<
<
&
&
<
<
&
&&&&
&&&
&
&
&
&&
&&&
&
&
&
&&
&
&
&
&&&
&
&
&
&
&
&&
<
<<<<
<<<
<
<
<
<<
<<<
<
<
<
<<
<
<
<
<<<
<
<
<
<
<
<<
&&
&&
&
&
&
&
<<
<<
<
<
<
<
370
540
530
550
520
510
500
490 410420430 3 8 0
450
440460
4 0 0
470 3 9 0
480
ABMW-2BR
ABMW-4BR
ABMW-4D
MW-3BR
MW-5BR
MW-6BR
MW-7BR
MW-7D MW-8BR
MW-8D
MW-9BR
MW-10BR
MW-11BR
MW-12D
MW-13BR
MW-14BR
MW-15BR
MW-16BR
MW-16D
ABMW-2BRL
MW-17BR
MW-18D
MW-9BRL
MW-18BR
MW-19BRMW-19D
MW-2
MW-4
ABMW-1480.2 ABMW-2482.9 ABMW-3482.88
ABMW-3S482.92
ABMW-4484.72
MW-8S437.02
MW-12S556.54
MW-16S367.28
BG-1
BG-2
MW-3377.31
CW-1 CW-1D
CW-2 CW-2D
CW-3
CW-4
CW-5
CW-6
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1
P1A
P2
P2A
P3
P3A
P4 P4A
FIGURE 6-9SURFICIAL WATER LEVEL MAPJUNE 19-20, 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, JUNE 19-20, 2017.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
&<&<
&<&<
&<&<
&<&<
&
&
&
<
<
<
&
&
<
<
&
&&&&
&&&
&
&
&
&&
&&&
&
&
&
&&
&
&
&
&&&
&
&
&
&
&
&&
<
<<<<
<<<
<
<
<
<<
<<<
<
<
<
<<
<
<
<
<<<
<
<
<
<
<
<<
&&
&&
&
&
&
&
<<
<<
<
<
<
<
440
450
550
4604
7
0
540530
500
490
520 370510
450
440
46043 047042041 0400380390480
4804
9
0490ABMW-1 ABMW-2
ABMW-2BR ABMW-3
ABMW-3S
ABMW-4
ABMW-4BR
MW-3BR
MW-5BR
MW-6BR
MW-7BR
MW-8BR
MW-8S
MW-9BR
MW-10BR
MW-11BR
MW-12S
MW-13BR
MW-14BR
MW-15BR
MW-16BRMW-16S
ABMW-2BRL
MW-17BR
MW-9BRL
MW-18BR
MW-19BR
CW-1471.17
CW-2374.98
CW-3420.34
ABMW-4D484.69
MW-7DABANDONED
MW-8D431.7
MW-12D556.81
MW-16D365.72
MW-18D492.96
MW-19D487.59
MW-2
MW-3
MW-4
BG-1
BG-2511.31
CW-1D
CW-2D
CW-4
CW-5
CW-6
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1
P1A
P2
P2A
P3
P3A
P4 P4A
FIGURE 6-10TRANSITION ZONE WATER LEVEL MAPJUNE 19-20, 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, JUNE 19-20, 2017.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
&<&<
&<&<
&<&<
&<&<
&
&
&
<
<
<
&
&
<
<
&
&&&&
&&&
&
&
&
&&
&&&
&
&
&
&&
&
&
&
&&&
&
&
&
&
&
&&
<
<<<<
<<<
<
<
<
<<
<<<
<
<
<
<<
<
<
<
<<<
<
<
<
<
<
<<
&&
&&
&
&
&
&
<<
<<
<
<
<
<
4
9
0
480
490
500450 430510440460500 450490370490
5105
0
0 3804104 8 0400390430
490
440
460
470
4
8
0 450490
470
4
8
0 460450440420480 470 460 450
CW-1
CW-2
CW-3
ABMW-1
ABMW-2 ABMW-3
ABMW-3S
ABMW-4
ABMW-4D
MW-7D
MW-8D
MW-8S
MW-12DMW-12S
MW-16DMW-16S
MW-18D
MW-19D
CW-1D471.01
CW-2D373.44
CW-4429.31
CW-5501.16
CW-6450.07
ABMW-2BR482.68
ABMW-4BR484.98
MW-3BR420.94
MW-5BR501.17
MW-6BR450.26
MW-7BRABANDONED
MW-8BR431.23
MW-9BR465.15
MW-10BR499.95
MW-11BR491.27
MW-13BR499.69
MW-14BR503.12
MW-15BR405.04
MW-16BR365.36
ABMW-2BRL482.36
MW-17BR455.51
MW-9BRLNA
MW-18BR496.71
MW-19BR486.31
MW-3
MW-2434.45
MW-4491.98
BG-2
BG-1510.47
R.O.W. 100'
FGDPONDS
ASH BASINWATER LEVEL 480'
HALIFAX COUNTY
PERSON COUNTYPERSON COUNTY
HALIFAX COUNTY NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
R T H
E
S
T
E
R R
D BOSTON RD (US HWY 501)M A Y O L A K E R D
MAYO LAKE RD
BOSTON RD (US HWY 501)HAUL ROAD TO LANDFILL
HAUL ROAD TO LANDFI
LLRAILROADRAILROADRAILROADLOUISIANA PACIFIC CORPORATION
PLANT ACCESS ROAD
MAYO LAKEWATER ELEVATION 432.3'
MAYO PLANT
RAW WATERINTAKESTRUCTURE
CRUCTHFIELDBRANCH
UNNAMED BRANCH
1981 C&DLANDFILL
P1 P1A
P2
P2A
P3
P3A
P4 P4A
FIGURE 6-11BEDROCK WATER LEVEL MAPJUNE 19-20, 2017MAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo_CSA_Sup2_WL_Report_Display.mxd
400 0 400 800200
IN FEET
GRAPHIC SCALE
NOTES:WATER LEVELS COLLECTED BY SYNTERRA, JUNE 19-20, 2017.
NA = NOT AVAILABLE
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
ELEVATIONS ARE REFERENCED TO THE NORTH AMERICAN VERTICAL DATUM 88(NAVD 88).
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON JULY 13, 2017.AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
LEGEND
&<ASSESSMENT WELLELEVATION IN FEET (NAVD 88)
&<BACKGROUND COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<DOWNGRADIENT COMPLIANCE WELLELEVATION IN FEET (NAVD 88)
&<MONITORING WELLELEVATION IN FEET (NAVD 88)
WATER SUPPLY WELL
WATER LEVEL CONTOUR IN FEET (NAVD 88)
<STREAM
WETLAND PER AMEC 2015 NRTR REPORT
DUKE ENERGY PROGRESS PARCEL LINE
GROUNDWATER FLOW DIRECTION
ASH BASIN WASTE BOUNDARY
LANDFILL BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<<<<<<<
&<
&<
&<
&<
&<
&<&<
&<&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE
(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
R A IL R O A D
R A IL R O A D
RAILROADR.O.W. 100'
FGD
PONDS MAYO LAKE
R T HESTER RD
NEW MAYO DRUS HWY 501BOSTON RDM A Y O L A K E R D
1981 C&D
LANDFILL
ASH BASIN
CW-1 to
CW-1D
0.0119
CW-2 to
CW-2D
0.0408
CW-3 to
MW-03BR
-0.0128
CW-5 to
MW-05BR
-0.0005
CW-6 to
MW-6BR
0.0314
ABMW-02 to
ABMW-02BRL
0.0043
ABMW-03 to
ABMW-03S
-0.0025
ABMW-04 to
ABMW-04BR
-0.0048
MW-18D to
MW-18BR
-0.0627
MW-19D to
MW-19BR
0.0319
MW-08S to
MW-08BR
0.2689
MW-12S to
MW-12D
-0.0058
MW-16S to
MW-16BR
0.0403
NOTES:WATER LEVELS WERE COLLECTED BY SYNTERRAJUNE 19-20, 2017.
SURFACE/CONTOUR DATA TRUNCATED AT EXTENT OFSAMPLING DATA.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY
PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PROON SEPTEMBER 27, 2017. AERIAL WAS COLLECTED ON JUNE13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTHCAROLINA STATE PLANE COORDINATE SYSTEM FIPS 3200
FIGURE 6-12
POTENTIAL VERTICAL GRADIENT
BETWEEN SHALLOW AND DEEP ZONES
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINADRAWN BY: B. YOUNG
PROJECT MANAGER: J. WYLIE
CHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Potential Vertical Gradient.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
&<MONITORING WELL
WATER SUPPLY WELL
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANT
SITE BOUNDARY
<STREAM
Well ID
Hydraulic
Gradient
(ft per ft)
Flow Direction
ABMW-02 to ABMW-02BRL 0.0043 Down
ABMW-03 to ABMW-03S -0.0025 Up
ABMW-04 to ABMW-04BR -0.0048 Up
CW-1 to CW-1D 0.0119 Down
CW-2 to CW-2D 0.0408 Down
CW-3 to MW-03BR -0.0128 Up
CW-5 to MW-05BR -0.0005 Up
CW-6 to MW-6BR 0.0314 Down
MW-08S to MW-08BR 0.2689 Down
MW-12S to MW-12D -0.0058 Up
MW-16S to MW-16BR 0.0403 Down
MW18D to MW-18BR -0.0627 Up
MW-19D to MW-19BR 0.0319 Down
0
WELL ID VERTICAL GRADIENT
(FT per FT)FLOW DIRECTION
POTENTIAL VERTICAL GRADIENT
UPWARD: -0.13332
DOWNWARD: 0.268197
POTENTIAL VERTICAL GRADIENT (foot per foot)1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<<<<<<<<<<<
<<<<<<<<<<<<<<<<<<<<<
<<<<<<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<&<
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&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADCCP MONOFILL
RAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
M ULLINS LNOLD US HWY 501W
O
O
D
Y
S S
T
O
R
E R
D US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILL
ASH BASIN
NOTES:SHADED RELIEF MAP BASED ON LIDAR DEM 20 DATA FROM NORTH CAROLINA FLOODRISK INFORMATION SYSTEM ACCESSED ON JANUARY 2, 2015.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
OCTOBER, 2016 AERIAL PHOTOGRAPHY OBTAINED FROM USDA NRCS GEOSPATIALDATA GATEWAY (https://gdg.sc.egov.usda.gov.GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 6-13FRACTURE TRACE ANALYSISMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - FractureTraceAnalysis.mxd
600 0 600 1,200300
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
FRACTURE TRACE
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
!(
!(
!(!(
!(!<
!<
!(
!(
!(
FGDPONDS
RAILROADRAILROAD RAILROADBOSTON ROADHIGHWAY 501(100' RIGHT-OF-WAY)ABMW-01
ABMW-02BR
MW-16BR
ABMW-03S
MW-03BR
SB-07
MW-15BR
SB-05
SB-06
1981 C&DLANDFILL
ASH BASIN
FIGURE 7-1POTENTIAL SECONDARY SOURCESOIL ANALYTICAL RESULTSMAYO ST EAM ELECTRIC PL ANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORT H C AROLIN ADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Fig07-01 - SecondarySoilResults_Mayo.mxd
0 300 600 900150
GRAPHIC SCALE IN FEET
NOTES:BOUNDARIES PROVIDED BY DUKE ENERGY PROGRESS.
2016 AERIAL ORTHOPHOTOGRAPHY OBTAINED FROM USDA NRCS GEOSPATIAL DATAGATEWAY (https://gdg.sc.egov.usda.gov/GDGOrder.aspx).
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
ASH BASIN WASTE BOUNDARY
LEGEND
ASH BASIN COMPLIANCE BOUNDARY
UNSATURATED SOIL SAMPLE LOCATION AND DEPTH(FEET BELOW GROUND SURFACE)!(
SATURATED SOIL SAMPLE LOCATION AND DEPTH(FEET BELOW GROUND SURFACE)!(
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Fig07-01 - SecondarySoilResults_Mayo.mxd
MAYO LAKE
COI RESULT UNITS PBTV PSRG
ARSENIC 11.2 mg/kg 5.68 5.8
STRONTIUM 83.7 mg/kg 62.5 NE
AB-03 (41.7 - 42.5)
MAYO LAKE ROAD
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
FIGURE 9-1PIPER DIAGRAM ̶ SURFACE WATER AND AOWSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINA148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comDRAWN BY: E. KINSEYPROJECT MANAGER: J. WYLIELAYOUT: DATE: AUGUST 2017FILEPATH: P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\PiperWell ID % DifferenceNotes:Cyan– Surface WatersPurple–AOWsOpen symbols – Reference LocationsData with charge balance >10% are omitted from plotData included for analysis from May / July 201720%40%60%80%Ca20%40%60%80%ClIIIJJJKKKLLLOOOHHHJJJEEELLLPPPIIIEEEIS-01 0.419JS-02 1.471KS-02B 3.045LS-05 4.303OS-08 8.566HS-09 4.373JS-03 1.100ES-06 8.566LSW-CB1 2.688PSW-CB2 4.145ISW-CBT1 8.285ESW-REF1 9.813
FIGURE 10-1PIPER DIAGRAM SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINA148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comDRAWN BY: E. KINSEYPROJECT MANAGER: J. WYLIELAYOUT: DATE: AUGUST 2017FILEPATH: P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Piper\Well ID % DifferenceNotes:Black – Within or below ashBlue - DowngradientGreen – BackgroundData with charge balance >10% are omitted from plot.Data included for analysis from March / April 2017.PorewaterPorewaterPorewater20%40%60%80%Ca20%40%60%80%ClPPPMMMBBBKKKJJJAAAPABMW-2 2.233MABMW-3 0.271BABMW-4 6.984KABMW-3S 3.997JMW-3 4.599AMW-16S 2.495MW-12S 11.224
FIGURE 10-2PIPER DIAGRAMTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTROXBORO, NORTH CAROLINA148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comDRAWN BY: E. KINSEYPROJECT MANAGER: J. WYLIELAYOUT: DATE: AUGUST 2017FILEPATH: P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\PiperWell ID % DifferenceNotes:Black – Within or below ashBlue - DowngradientGreen – BackgroundData with charge balance >10% are omitted from plotData included for analysis from March / April 2017.PorewaterPorewaterPorewater20%40%60%80%Ca20%40%60%80%ClPPPMMMBBBKKKBBBIIIMMMOOOPPPJJJMMMPABMW-2 2.233MABMW-3 0.271BABMW-4 6.984KABMW-4D 2.001BCW-1 9.185ICW-2 0.883MCW-3 3.596OCW-4 4.146MW-12D 11.619MW-16D 13.726PMW-18D 6.348JMW-19D 4.217MBG-2 7.201
20%40%60%80%Ca20%40%60%80%ClPPPMMMBBBKKKIIIAAAJJIIICCCOOOGGGMMMAAACCDPPPBBBIIIMMMJJJPPPPABMW-2 2.139MABMW-3 0.336BABMW-4 6.879KABMW-2BR 7.177IABMW-2BRL 8.002AABMW-4BR 5.799ICW-2D 7.941CCW-6 7.714OMW-2 8.947GMW-3BR 6.847MMW-4 6.500AMW-8BR 4.468CMW-13BR 3.710PMW-18BR 5.451BMW-19BR 8.112IMW-14BR 6.914MMW-10BR 5.714JMW-5BR 4.240PCW-5 4.926FIGURE 10-3PIPER DIAGRAMBEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTROXBORO, NORTH CAROLINA148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.comDRAWN BY: E. KINSEYPROJECT MANAGER: J. WYLIELAYOUT: DATE: AUGUST 2017FILEPATH: P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\PiperWell ID % DifferenceNotes:Black – Within or below ashBlue - DowngradientGreen – BackgroundOrange – UpgradientData with charge balance >10% are omitted from plot.Data included for analysis from March / April 2017.PorewaterPorewaterPorewaterCW-1D 10.505MW-16BR 16.056
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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<<<<<<<
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HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1
ABMW-1*323
MW-12S†1.11
ABMW-4*547
ABMW-2*957 M4
ABMW-3*191
MW-3ND
ABMW-3SND
MW-16SND
NOTES:THE NORTH CAROLINA 2L FOR ARSENIC IS 10 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-1ISOCONCENTRATION MAP -ARSENIC IN SUR FICIA L GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL ARSENIC CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1 10ABMW-4D26.9
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-2ND
CW-3ND
MW-18DND
MW-19DND
MW-16DND
NOTES:THE NORTH CAROLINA 2L FOR ARSENIC IS 10 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-2ISOCONCENTRATION MAP -ARSENIC IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL ARSENIC CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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HALIFAX COUNTY
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HALIFAX COUNTY
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NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1ABMW-4BR1.26
MW-5BR1.06
ABMW-2BR3.06
ABMW-2BRL1.88
MW-7BRND
MW-2ND
BG-1ND
CW-1DND
CW-2DND
CW-4ND
CW-5ND
CW-6ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-19BRND
MW-13BRND
MW-14BRND
MW-4ND
MW-16BRND
MY-3ND
MY-5ND
MY-7ND
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR ARSENIC IS 10 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-3ISOCONCENTRATION MAP -ARSENIC IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL ARSENIC CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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<<<<<<<
&<
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HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1 9
ABMW-1*520
MW-356
MW-12S13
ABMW-4*592
ABMW-2*113
ABMW-3*258
ABMW-3S22
MW-16S70
NOTES:THE NORTH CAROLINA 2L FOR BARIUM IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 19 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-4ISOCONCENTRATION MAP -BARIUM IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BARIUM CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
80700MW-7D18
MW-12D15
BG-247
CW-2122
CW-316
MW-19D62
ABMW-4D890
MW-16D6
CW-1NDMW-18DND
NOTES:THE NORTH CAROLINA 2L FOR BARIUM IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 80 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-5ISOCONCENTRATION MAP -BARIUM IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BARIUM CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D97
97
97MW-7BR157
MW-251
CW-427
BG-184
CW-2D31
CW-642
MW-3BR38
MW-8BR22
MW-18BR96
MW-19BR53
ABMW-4BR113
CW-546
MW-5BR37
MW-13BR32
MW-14BR15
ABMW-2BR115ABMW-2BRL72
MW-48
MW-16BR12
MY-360.4
MY-554.5
MY-730
CW-1DND
MW-10BRND
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR BARIUM IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 97 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-6ISOCONCENTRATION MAP -BARIUM IN B ED ROCK GROUND WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BARIUM CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
5 0
7 0 0
ABMW-1*5820
MW-3982
ABMW-4*6520
ABMW-2*8800
ABMW-3*2000
ABMW-3S1330
MW-16S179
MW-12SND
NOTES:THE NORTH CAROLINA 2L FOR BORON IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-7ISOCONCENTRATION MAP -BORON IN SURFICIAL GROU NDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BORON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
50 700CW-2808 B3
ABMW-4D3470
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-3ND
MW-18DND
MW-19DND
MW-16DND
NOTES:THE NORTH CAROLINA 2L FOR BORON IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-8ISOCONCENTRATION MAP -BORON IN TR ANSITION ZONE GROUN DWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BORON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
507 0 0
CW-2D290 B3
MW-7BRND
MW-2ND
BG-1ND
CW-1DND
CW-6ND
CW-4ND MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-19BRND
ABMW-4BRND
CW-5ND
MW-5BRND
MW-13BRND
MW-14BRND
ABMW-2BRNDABMW-2BRLND
MW-4ND
MW-16BRND
MY-3ND
MY-5ND
MY-7ND
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR BORON IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-9ISOCONCENTRATION MAP -BORON IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BORON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
ABMW-1*50.6 B2
MW-329.5
MW-12S†5.1
ABMW-4*122
ABMW-2*50.4
ABMW-3*61.4
ABMW-3S3.32
MW-16S14.1
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR CALCIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-10ISOCONCENTRATION MAP -CALCIUM IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CALCIUM CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
60
6 0
MW-7D53.5 B1
MW-12D12.1
BG-255.3
CW-19.73
CW-217.1
CW-364.5
MW-18D42.1
MW-19D110
ABMW-4D119
MW-16D26
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR CALCIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 60 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-11ISOCONCENTRATION MAP -CALCIUM IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CALCIUM CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
75
7 5
75MW-7BR52.5 B1
MW-218.6
BG-112.9
CW-1D47.6
CW-2D85.7
CW-412.7
CW-556.1
CW-6†112
MW-3BR148
MW-8BR74.4
MW-10BR32
MW-18BR99.4
MW-19BR126
ABMW-4BR75.3
MW-5BR†93.3
MW-13BR64.4
MW-14BR13.9
ABMW-2BR76.5
ABMW-2BRL69.9
MW-430.1
MW-16BR29.4
MY-322
MY-5†84.8
MY-77.49
MW-11BR
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR CALCIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 75 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-12ISOCONCENTRATION MAP -CALCIUM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CALCIUM CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3
ABMW-1*13
MW-350
MW-12S0.56
ABMW-4*12
ABMW-2*15
ABMW-3*70
ABMW-3S12
MW-16S35
NOTES:THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-13ISOCONCENTRATION MAP -CHLORIDE IN SUR FICIA L GR OUND WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CHLORIDE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3333
33
MW-7D†73
MW-12D4.3
BG-2†35
CW-118
CW-250
CW-392
MW-18D25
MW-19D150
ABMW-4D13
MW-16D10
NOTES:THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 33 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-14ISOCONCENTRATION MAP - CHLORIDE INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CHLORIDE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
45
4545
4 5
MW-7BR11
MW-214
BG-110
CW-1D10
CW-2D35
CW-692
CW-47.3
MW-3BR150
MW-8BR110
MW-10BR20
MW-18BR66
MW-19BR160
ABMW-4BR5.2
CW-539
MW-5BR69
MW-13BR33
MW-14BR13
ABMW-2BR28ABMW-2BRL23
MW-47.6
MW-16BR8.1
MY-332.2
MY-539.7
MY-75.5
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 45 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-15ISOCONCENTRATION MAP -CHLORIDE IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CHLORIDE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<&<
&<&<
&<&<
&<&<&<&<&<&<
&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONR AILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROAD1981 C&DLANDFILL
ASH BASIN
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-12S1.06
MW-16S2.66
ABMW-1*0.83
MW-30.19
MW-12S4.4
ABMW-2*0.084
MW-16S0.028
ABMW-1*ND
MW-3ND
ABMW-4*ND
ABMW-2*ND
ABMW-3*ND
ABMW-3SND
ABMW-4*ND
ABMW-3*ND
ABMW-3SND
NOTES:THE NORTH CAROLINA 2L FOR TOTAL CHROMIUM IS 10 μg/L.
PROVISIONAL THRESHOLD BACKGROUND VALUE IS 3.2 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-16ISOCONCENTRATION MAP -CHROMIUM (VI) AND CHROMIUM (TOTAL) IN SURFICIALGROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_Chromium.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
TOTAL CHROMIUM CONCENTRATION (μg/L)1
TOTAL CHROMIUM NOT DETECTED ABOVEREPORTING LIMITND
CHROMIUM (VI) CONCENTRATION (µg/L)1
CHROMIUM (VI) NOT DETECTED ABOVEREPORTING LIMITND
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONR AILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROAD1981 C&DLANDFILL
ASH BASIN
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D6
MW-12D1.25
CW-11.55
CW-39.58
ABMW-4D1.3
MW-12D0.63
CW-10.21
CW-20.19 M1
CW-30.083
MW-18D0.054
MW-16D0.67
MW-7DND
BG-2ND
CW-2ND
MW-18DND
MW-19DND
MW-16DND
MW-7DND
BG-2ND
MW-19DND
ABMW-4DND
NOTES:THE NORTH CAROLINA 2L FOR TOTAL CHROMIUM IS 10 μg/L.
PROVISIONAL THRESHOLD BACKGROUND VALUE IS 6 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-17ISOCONCENTRATION MAP -CHROMIUM (VI) AND CHROMIUM (TOTAL) IN TRANSITIONZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_Chromium.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
TOTAL CHROMIUM CONCENTRATION (μg/L)1
TOTAL CHROMIUM NOT DETECTED ABOVEREPORTING LIMITND
CHROMIUM (VI) CONCENTRATION (µg/L)1
CHROMIUM (VI) NOT DETECTED ABOVEREPORTING LIMITND
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<&<
&>&>
&<&<
&<&<
&<&<&<&<
&<&<
&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONR AILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROAD1981 C&DLANDFILL
ASH BASIN
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-8BR2.34
MW-13BR1.54
MY-30.6
MY-70.86
MW-20.08
BG-10.25
CW-1D0.041
CW-40.26
MW-10BR0.074
CW-50.043MW-14BR0.048
ABMW-2BR0.7
ABMW-2BRL0.91
MW-40.06
MY-30.13
MY-70.63
MW-7BRND
MW-2ND
CW-1DND
CW-2DND
CW-4ND
CW-5ND
CW-6ND
BG-1ND
MW-3BRND
MW-10BRND
MW-18BRND
MW-19BRND
ABMW-4BRND
MW-5BRND
MW-14BRND
ABMW-2BRND
ABMW-2BRLND
MW-4ND
MW-16BRND
MY-5ND
MW-11BR
MW-7BRND
CW-2DND
CW-6ND
MW-3BRND
MW-8BRND
MW-18BRND MW-19BRND
ABMW-4BRND
MW-5BRND
MW-13BRND
MW-16BRND
MY-5ND
NOTES:THE NORTH CAROLINA 2L FOR TOTAL CHROMIUM IS 10 μg/L.
PROVISIONAL THRESHOLD BACKGROUND VALUE IS 7 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-18ISOCONCENTRATION MAP -CHROMIUM (VI) AND CHROMIUM (TOTAL) IN BEDROCKGROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_Chromium.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
TOTAL CHROMIUM CONCENTRATION (μg/L)1
TOTAL CHROMIUM NOT DETECTED ABOVEREPORTING LIMITND
CHROMIUM (VI) CONCENTRATION (µg/L)1
CHROMIUM (VI) NOT DETECTED ABOVEREPORTING LIMITND
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D1
ABMW-1*3.87
MW-12S†1.59
ABMW-4*2.5
ABMW-3S2.04
MW-3ND
ABMW-2*ND
ABMW-3*ND
MW-16SND
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-19ISOCONCENTRATION MAP -COBALT IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL COBALT CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1ABMW-4D5.9
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-2ND
CW-3ND
MW-18DND
MW-19DND
MW-16DND
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-20ISOCONCENTRATION MAP -COBALT IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL COBALT CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1.25MW-21.88
MW-13BR†3.08
MW-7BRND
BG-1ND
CW-1DND
CW-2DND
CW-5ND
CW-6ND
CW-4ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-19BRND
ABMW-4BRND
MW-5BRND
MW-14BRND
ABMW-2BRND
ABMW-2BRLND
MW-4ND
MW-16BRND
MY-3ND
MY-5ND
MY-7ND
MW-11BR
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1.25 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-21ISOCONCENTRATION MAP -COBALT IN BEDR OCK GR OUND WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL COBALT CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3
8
5
ABMW-1*1450
MW-12S†6820
ABMW-4*7170
ABMW-2*95
ABMW-3*15800
ABMW-3S1520
MW-16S94
MW-3ND
NOTES:THE NORTH CAROLINA 2L FOR IRON IS 300 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 385 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-22ISOCONCENTRATION MAP -IRON IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL IRON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1 3 2 0
MW-7D353
MW-12D242
BG-2500
CW-1289
CW-3211
MW-19D2030
ABMW-4D58800
MW-16D316
CW-2ND
MW-18DND
NOTES:THE NORTH CAROLINA 2L FOR IRON IS 300 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1,320 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-23ISOCONCENTRATION MAP -IRON IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL IRON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3359MW-7BR369
MW-2574
BG-149
CW-1D27
CW-2D226
CW-62040
CW-4153
MW-3BR313
MW-8BR†587
MW-18BR241
MW-19BR1080
ABMW-4BR438
CW-5360
MW-5BR†7100
MW-13BR†3260
MW-14BR52
ABMW-2BR1230ABMW-2BRL1840
MW-4182
MW-16BR505
MY-5953
MW-10BRND
MY-3ND
MY-7ND
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR IRON IS 300 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3,359 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-24ISOCONCENTRATION MAP -IRON IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL IRON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
253ABMW-1*982
MW-31280
MW-12S†395
ABMW-4*2620
ABMW-2*452
ABMW-3*836
ABMW-3S364
MW-16S129
NOTES:THE NORTH CAROLINA 2L FOR MANGANESE IS 50 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 253 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-25ISOCONCENTRATION MAP -MAN GANESE IN SURFICIAL GROU NDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MANGANESE CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
300300MW-7D77
MW-12D45
BG-2117
CW-118
CW-2118
CW-319
MW-19D1100
ABMW-4D6960
MW-16D124
MW-18DND
NOTES:THE NORTH CAROLINA 2L FOR MANGANESE IS 50 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 300 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-26ISOCONCENTRATION MAP - MANGANESE INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MANGANESE CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
545
545
545
545MW-7BR198
MW-2564
BG-16
CW-1D11
CW-2D785
CW-6†1440
MW-3BR550
MW-8BR278
MW-10BR54
MW-18BR1360
MW-19BR1220
ABMW-4BR363
CW-5464
MW-5BR†1830
MW-13BR383
MW-14BR130
ABMW-2BR242ABMW-2BRL341
MW-4178
MW-16BR158
MY-38
MY-5†517
MY-70.78
CW-4ND
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR MANGANESE IS 50 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 545 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-27ISOCONCENTRATION MAP -MANGANESE IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MANGANESE CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
ABMW-1*304
MW-12S1.97
ABMW-4*471
ABMW-2*1560 M4
ABMW-3*39.8
MW-3ND
ABMW-3SND
MW-16SND
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3.15 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-28ISOCONCENTRATION MAP -MOLYBD EN UM IN SUR FICIA L GR OUND WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MOLYBDENUM CONCENTRATION (μg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1
1
ABMW-4D8.1
MW-16D5.98
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-2ND
CW-3ND
MW-18DND
MW-19DND NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-29ISOCONCENTRATION MAP - MOLYBD EN UM INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MOLYBDENUM CONCENTRATION (μg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1313MW-7BR2.39
MW-21.63
CW-1D22
CW-2D1.13
CW-63.53
MW-8BR2.46
MW-18BR1.85ABMW-4BR8.57
MW-5BR1.02
MW-13BR2.2
MW-14BR4.34
ABMW-2BR10.9ABMW-2BRL2
MW-42.7
MW-16BR49.2
MY-73.8
BG-1ND
CW-4ND
MW-3BRND
MW-10BRND
MW-19BRND
CW-5ND
MY-3ND
MY-5ND
MW-11BR
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 13 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-30ISOCONCENTRATION MAP -MOLYBDENUM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MOLYBDENUM CONCENTRATION (μg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
25ABMW-1*1890
MW-3334
MW-12S†27
ABMW-4*3160
ABMW-2*1380
ABMW-3*1650
ABMW-3S75
MW-16S178
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 25 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-31ISOCONCENTRATION MAP -STRON TIUM IN SU RFICIAL GROUN DWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
STRONTIUM CONCENTRATION (µg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
391
391391MW-7D447
MW-12D85
BG-2309
CW-167
CW-2232
CW-3317
MW-18D159
MW-19D398
ABMW-4D1740
MW-16D176
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 391 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-32ISOCONCENTRATION MAP - STRON TIUM INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
STRONTIUM CONCENTRATION (µg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
418 418418MW-7BR1040
MW-2184
BG-1169
CW-1D172
CW-2D411
CW-6336
CW-4132
MW-3BR402
MW-8BR342
MW-10BR201
MW-18BR477
MW-19BR447
ABMW-4BR1940
CW-5167
MW-5BR231
MW-13BR360
MW-14BR143
ABMW-2BR1110
ABMW-2BRL2320
MW-4112
MW-16BR109
MY-3391
MY-5†621
MY-7106
MW-11BR
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOWABLE CONCENTRATIONESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 418 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-33ISOCONCENTRATION MAP -STRON TIUM IN BEDROC K GROU NDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
STRONTIUM CONCENTRATION (µg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D1.6
ABMW-1*21
MW-322
MW-12S0.95
ABMW-4*56
ABMW-2*36
ABMW-3*33
ABMW-3S0.49
MW-16S10
NOTES:THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1.6 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-34ISOCONCENTRATION MAP -SULFATE IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
SULFATE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
7.5
7 .5 7.57.57.5MW-7D10
MW-12D1.1
BG-25.5
CW-18.5
CW-237
CW-315
MW-18D37
MW-19D56
ABMW-4D0.78
MW-16D7.6
NOTES:THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 7.5 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-35ISOCONCENTRATION MAP -SU LFATE IN TRAN SITION ZONE GR OUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
SULFATE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
181818
MW-7BR2.8
MW-218
BG-10.27
CW-1D3.5
CW-2D62
CW-425 CW-426
CW-56.4
CW-638
CW-1D3.3
CW-2D61
CW-424 MW-3BR11
MW-8BR37
MW-10BR87
MW-18BR13
MW-19BR53
ABMW-4BR30
CW-56.3MW-5BR1.4
MW-13BR15
MW-14BR8.9
ABMW-2BR8.2
ABMW-2BRL0.28
MW-439
MW-16BR0.62
MY-3†55.6
MY-55.7
MY-72.7
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 18 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-36ISOCONCENTRATION MAP -SULFATE IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
SULFATE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
85ABMW-1*370
MW-3200
MW-12S51
ABMW-4*560
ABMW-2*440
ABMW-3*350
ABMW-3S96
MW-16S140
NOTES:THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 85 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-37ISOCONCENTRATION MAP - TOTAL DISSOLVEDSOLIDS IN SURFICIAL GROU NDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
430430500
500
MW-7D370
MW-12D96
BG-2320
CW-1120
CW-2160
CW-3390
MW-18D280
MW-19D620
ABMW-4D600
MW-16D160
NOTES:THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 430 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-38ISOCONCENTRATION MAP - TOTAL DISSOLVEDSOLIDS IN TR ANSITION ZONE GROUN DWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3403403 4 0
500
500
500
MW-7BR270
MW-2210
BG-1110
CW-1D210
CW-2D320
CW-6520
CW-4160 MW-3BR700
MW-8BR†490
MW-10BR310
MW-18BR440
MW-19BR730
ABMW-4BR330
CW-5310
MW-5BR440
MW-13BR340
MW-14BR210
ABMW-2BR360ABMW-2BRL310
MW-4210
MW-16BR200
MY-3226
MY-5†349
MY-788
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 340 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-39ISOCONCENTRATION MAP - TOTAL DISSOLVEDSOLIDS IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
ABMW-1*56.7
MW-12S†2.8
ABMW-4*3.66
ABMW-2*0.87
ABMW-3*0.475
MW-3ND
ABMW-3SND
MW-16SND
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-40ISOCONCENTRATION MAP -VAN ADIU M IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL VANADIUM CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
5.9MW-7D0.734
MW-12D0.805
BG-25.06
CW-11.08
CW-31.92
MW-18D1.3ABMW-4D10.4
MW-16D0.795
CW-2ND
MW-19DND NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.9 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-41ISOCONCENTRATION MAP - VAN ADIU M INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL VANADIUM CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-20.684
BG-13.76
CW-1D1.19
CW-2D0.677
CW-41.34
MW-8BR1.22
MW-10BR2.11
ABMW-4BR0.308
MW-14BR2.45
MW-41.03
MY-72.5
MW-7BRND
CW-6ND
MW-3BRND
MW-18BRND
MW-19BRND
CW-5ND
MW-5BRND
MW-13BRND
ABMW-2BRND
ABMW-2BRLND
MW-16BRND
MY-3ND
MY-5ND
MW-11BR
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.5 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-42ISOCONCENTRATION MAP -VANADIUM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL VANADIUM CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-35.9
MW-12S6.2
ABMW-1*7.7
ABMW-3*6.9
ABMW-3S4.9
ABMW-4*7.4
MW-16S6.7
ABMW-2*7.8
NOTES:THE NORTH CAROLINA 2L FOR pH IS 6.5-8.5 S.U.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 4.9 - 6.5 S.U.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-43ISOCONCENTRATION MAP -pH IN SURFIC IAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
pH CONCENTRATION (S.U.)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-12D5.9
BG-26.5
CW-15.9
CW-25.2
CW-36.5
ABMW-4D6.3
MW-16D6.9
MW-18D6.4
MW-19D6.8 NOTES:THE NORTH CAROLINA 2L FOR pH IS 6.5-8.5 S.U.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.7 - 6.6 S.U.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-44ISOCONCENTRATION MAP -pH IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
pH CONCENTRATION (S.U.)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&>
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN
1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-25.7
CW-1D7.0
CW-2D6.7
CW-46.1
CW-56.7
CW-66.5
ABMW-2BR7.8ABMW-2BRL7.8
ABMW-4BR7.8
BG-15.6
MW-3BR7.0
MW-46.9
MW-5BR7.1
MW-8BR6.4
MW-10BR6.2
MW-13BR7.1
MW-14BR6.6
MW-16BR7.9
MW-18BR7.1
MW-19BR7.0
MY-35.6
MY-57.1
MY-76.1
MW-11BR
NOTES:THE NORTH CAROLINA 2L FOR pH IS 6.5-8.5 S.U.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.0 - 7.3 S.U.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDWATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT WITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE WELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-45ISOCONCENTRATION MAP -pH IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORTH C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
pH CONCENTRATION (S.U.)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING WELL
&<BACKGROUND MONITORING WELL
&>PIEZOMETER
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
FIGURE 11-46
CONCENTRATION VERSUS DISTANCE
FROM SOURCE – pH, BORON,
STRONTIUM, SULFATE, TDS,
ARSENIC CONSTITUENTS
DUKE ENERGY PROGRESS, LLC
MAYO STEAM ELECTRIC PLANT
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
LEGEND
15 NCAC 02L
Standard
Surficial Well
Transition Zone
Well
Bedrock Well
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 11-47
CONCENTRATION VERSUS DISTANCE
FROM SOURCE – BARIUM,
CHROMIUM (VI), CHROMIUM,
COBALT, IRON, MANGANESE
DUKE ENERGY PROGRESS, LLC
MAYO STEAM ELECTRIC PLANT
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
LEGEND
15 NCAC 02L
Standard
Surficial Well
Transition Zone
Well
Bedrock Well
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 11-48
CONCENTRATION VERSUS DISTANCE
FROM SOURCE – MOLYBDENUM,
VANADIUM, RADIUM
DUKE ENERGY PROGRESS, LLC
MAYO STEAM ELECTRIC PLANT
ROXBORO, NORTH CAROLINA
Note:
Wells used for each graph within this figure are consistent and are as follows:
Source Area
Surficial Zone: ABMW-04
Transition Zone: ABMW-04D
Bedrock: ABMW-04BR
Roughly 3000’ from Source Area
Surficial Zone: MW-03
Transition Zone: CW-02
Bedrock: CW-02D
Roughly 4000’ from Source Area
Surficial Zone: MW-16S
Transition Zone: MW-16D
Bedrock: MW-16BR
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
LEGEND
15 NCAC 02L
Standard
Surficial Well
Transition Zone
Well
Bedrock Well
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
3.06
1.88
ND
ND
ND ND
ND
957
ND
547
1.26
ND
191
1026.9
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-ARSENIC
10/18/2017
10/27/2017 5:53 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-49
ARSENIC ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
3.06
ND
CONCENTRATION IN µg/L
ARSENIC ISOPLETH IN µg/L (2L STANDARD = 10 µg/L)
CONCENTRATION IS NON-DETECT
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR ARSENIC IS 10 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR ARSENIC IS 1 μg/L WITHIN THE SURFICIAL,
TRANSITION ZONE, AND BEDROCK FLOW LAYERS.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
ASH BASIN DAM
PROGRESS
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
113
115
72
258
22
122
31
70
6
12
12
56
592
890
113
700
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-BARIUM
10/18/2017
10/27/2017 5:32 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-50
BARIUM ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
122 CONCENTRATION IN µg/L
BARIUM ISOPLETH IN µg/L (2L STANDARD = 700 µg/L)
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR BARIUM IS 700 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR BARIUM IS 19 μg/L WITHIN THE SURFICIAL FLOW LAYER,
78.3 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 97 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
PROGRESS
ND
ND
1330
2000
808
290
179
ND
ND
700
8800
700
700
6520
3470
ND
982
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-BORON
10/18/2017
10/27/2017 5:33 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-51
BORON ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR BORON IS 700 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR BORON IS 50 μg/L WITHIN THE SURFICIAL,
TRANSITION ZONE, AND BEDROCK FLOW LAYERS.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
808
ND
CONCENTRATION IN µg/L
BORON ISOPLETH IN µg/L (2L STANDARD = 700 µg/L)
CONCENTRATION IS NON-DETECT
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
PROGRESS
46.5
69.9
3.32
61.4
17.1
85.7
14.1
26
29.4
50.4
122
29.5
119
75.3
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
75
75
75
75
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-CALCIUM
10/18/2017
10/27/2017 5:34 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-52
CALCIUM ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR CALCIUM IS NOT ESTABLISHED.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR CALCIUM IS 2.89 mg/L WITHIN THE SURFICIAL FLOW LAYER,
59.2 mg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 73.3 mg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
AT NEARBY ROXBORO PLANT, IN A SIMILAR GEOLOGIC SETTING, BACKGROUND CONCENTRATIONS
RANGE UP TO 106 mg/L.
3.32 CONCENTRATION IN mg/L
CALCIUM ISOPLETH IN mg/L (INTERMEDIATE VALUE = 75 mg/L)
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
PROGRESS
28
23
12
70
50
35
35
10
8.1
15
12
50
13
5.2
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-CHLORIDE
10/18/2017
10/27/2017 5:36 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-53
CHLORIDE ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR CHLORIDE IS 3.3 mg/L WITHIN THE SURFICIAL FLOW LAYER,
33.3 mg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 43 mg/L WITHIN THE
BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
50 CONCENTRATION IN mg/L
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
PROGRESS
VI: ND
T: ND
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
VI: ND
T: 1.3
VI: ND
T: ND
VI: 0.7
T: ND
VI: 0.084
T: ND
VI: 0.91
T: ND
VI: ND
T: ND
VI: ND
T: ND
VI: 0.19
T: ND
VI: ND
T: ND
VI: 0.19
T: ND VI: 0.028
T: 2.66
VI: 0.67
T: ND
VI: ND
T: ND
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-CHROMIUM(VI & TOTAL)
10/18/2017
10/27/2017 5:37 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-54
CHROMIUM (HEXAVALENT AND TOTAL)
ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR HEXAVALENT AND TOTAL CHROMIUM IS 10 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR HEXAVALENT CHROMIUM IS 0.088 μg/L WITHIN THE SURFICIAL FLOW LAYER,
1.26 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 0.40 μg/L WITHIN THE BEDROCK FLOW LAYER.
PROVISIONAL BACKGROUND CONCENTRATION FOR TOTAL CHROMIUM IS 3.23 μg/L WITHIN THE SURFICIAL FLOW LAYER,
6 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 7 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
VI: 0.7
T: 1.3
ND
CONCENTRATION IN µg/L (VI = HEXAVALENT RESULT; T = TOTAL RESULT)
CONCENTRATION IS NON-DETECT
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
PROGRESS
ND
ND
ND
ND
2.04
ND
ND
ND
ND
ND
2.5
5.9
ND
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
ND
1
1
1
1
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-COBALT
06/14/2016
10/27/2017 5:38 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-55
COBALT ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
5.9
ND
CONCENTRATION IN µg/L
COBALT ISOPLETH IN µg/L (IMAC STANDARD = 1 µg/L)
CONCENTRATION IS NON-DETECT
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR COBALT IS 1.02 μg/L WITHIN THE SURFICIAL FLOW LAYER,
1 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 1.19 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
PROGRESS
1230
1840
1520
15800
ND
226
94
505
95
7170
438
ND
316
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
58800 2,550
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-IRON
06/14/2016
10/27/2017 5:41 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-56
IRON ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
226
ND
CONCENTRATION IN µg/L
CONCENTRATION IS NON-DETECT
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR IRON IS 300 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR IRON IS 385 μg/L WITHIN THE SURFICIAL FLOW LAYER,
1,319 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 2,550 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
AT NEARBY ROXBORO PLANT, IN A SIMILAR GEOLOGIC SETTING,BACKGROUND CONCENTRATIONS
RANGE UP TO 4,227 μg/L.
PROGRESS
IRON ISOPLETH IN µg/L
(BACKGROUND BEDROCK = 2,550 µg/L)
242
341
364
836
118
785
129
124
158
452
2620
363
1280
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
500
6960
500
500
500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-MANGANESE
06/14/2016
10/27/2017 5:44 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-57
MANGANESE ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
226 CONCENTRATION IN µg/L
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR MANGANESE IS 50 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR MANGANESE IS 253 μg/L WITHIN THE SURFICIAL FLOW LAYER,
298 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 519 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
AT NEARBY ROXBORO PLANT, IN A SIMILAR GEOLOGIC SETTING,BACKGROUND CONCENTRATIONS
RANGE UP TO 1,198 μg/L.
MANGANESE ISOPLETH IN µg/L (INTERMEDIATE VALUE = 500 µg/L)
PROGRESS
10.9
2
ND
39.8
ND
1.13
ND
5.98
49.2
1560
ND
8.57
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
10
10
10
10
8.1
471
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-MOLYBDENUM
06/14/2016
10/27/2017 5:45 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-58
MOLYBDENUM ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
8.57
ND
CONCENTRATION IN µg/L
MOLYBDENUM ISOPLETH IN µg/L (INTERMEDIATE VALUE = 10 µg/L)
CONCENTRATION IS NON-DETECT
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR MOLYBDENUM IS NOT ESTABLISHED.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR MOLYBDENUM IS 3.15 μg/L WITHIN THE SURFICIAL FLOW LAYER,
5 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 13.1 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
AT NEARBY ROXBORO PLANT, IN A SIMILAR GEOLOGIC SETTING,BACKGROUND CONCENTRATIONS
RANGE UP TO 35 μg/L.
PROGRESS
7.8
6.9
4.9
7.8
7.8
6.7
6.9
7.9
5.2
6.7
7.4
5.9
7.8
6.3
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-PH
06/14/2016
10/27/2017 5:46 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-59
pH ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
7.8 CONCENTRATION IN STANDARD UNITS (S.U.)
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR pH IS A RANGE FROM 6.5 - 8.5 S.U.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR pH IS A RANGE FROM 4.9 - 6.5 S.U. WITHIN THE
SURFICIAL FLOW LAYER, 5.7 - 6.6 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND
5.0 - 7.3 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.PROGRESS
1380
1650
178
176
109
411
232
1110
2320
3160
334
1940
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
400
418
75
418
418
1740
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-STRONTIUM
06/14/2016
10/27/2017 5:47 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-60
STRONTIUM ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
411 CONCENTRATION IN µg/L
STRONTIUM ISOPLETH IN µg/L
(BACKGROUND BEDROCK = 418 µg/L)
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR STRONTIUM IS NOT ESTABLISHED.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR STRONTIUM IS 25 μg/L WITHIN THE SURFICIAL FLOW LAYER,
391 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 418 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
AT NEARBY ROXBORO PLANT, IN A SIMILAR GEOLOGIC SETTING, BACKGROUND CONCENTRATIONS
RANGE UP TO 760 mg/L.
PROGRESS
36 33
0.49
10
7.6
39
0.62
62
8.2
0.28
56
22
0.78
30
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-SULFATE
06/14/2016
10/27/2017 5:48 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-61
SULFATE ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
122 CONCENTRATION IN mg/L
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR SULFATE IS 1.6 mg/L WITHIN THE SURFICIAL FLOW LAYER,
7.5 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 18 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
PROGRESS
440
350
96
140
160
160
320
200
360
310
330
200
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
560
600
500
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-TDS
06/14/2016
10/27/2017 5:49 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-62
TOTAL DISSOLVED SOLIDS ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
122 CONCENTRATION IN mg/L
TOTAL DISSOLVED SOLIDS (TDS) ISOPLETH IN mg/L (2L VALUE = 500 mg/L)
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
LEGEND
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS (TDS) IS 500 mg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR TDS IS 85 mg/L WITHIN THE SURFICIAL FLOW LAYER,
430 mg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 340 mg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
PROGRESS
0.87 0.475
ND
ND
0.795
ND
0.677ND
3.66
ND
0.308
ASH BASIN WASTE BOUNDARY
ASH
C C'
SOUTHWEST NORTHEAST
MAYO LAKE RDASH BASIN COMPLIANCE BOUNDARY
DUKE ENERGY MAYO STEAM ELECTRIC PLANT PROPERTY
TRANSITION
ALLUVIUM
SAPROLITE
BEDROCK GRAVEL ROADASH BASIN TOP OF
DAM 488'
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
ASH BASIN
MAYO LA
K
E

R
D C'CRAIL
R
O
A
D
T
R
A
C
K
S
PROFILE BASED ON
1968 USGS
TOPOGRAPHIC MAP
BEDROCK
BEDROCK
ASH
ASH
ND
ND
6
10.4
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
PROJECT MANAGER:
LAYOUT:
DRAWN BY:
JERRY WYLIE
DATE:ADAM FEIGL
CC-VANADIUM
06/14/2016
10/27/2017 5:52 PM P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP CC Analytical.dwg
FIGURE 11-63
VANADIUM ANALYTICAL RESULTS
CROSS-SECTION C-C'
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
VERTICAL EXAGGERATION 5X MW-16BRMW-16DMW-16SABMW-3SABMW-3ABMW-4ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4BRCW-2DCW-2MW-3WATER ELEVATION=480'
EARTHEN DAM
(FILL)
CRUTCHFIELD
BRANCH
ASH BASIN DAM
CRUTCHFIELD
BRANCH SW-CB2BOX CULVERT
UNDER ROAD
ASH BASIN
MAYO LA
K
E

R
D C'CGROUNDWATER
FLOW DIRECTION
0.87
ND
CONCENTRATION IN µg/L
VANADIUM ISOPLETH IN µg/L (INTERMEDIATE VALUE = 6 µg/L)
CONCENTRATION IS NON-DETECT
0 75 150 300
HORIZONTAL SCALE: 1" = 300'
VERTICAL SCALE: 1" = 60'
5X VERTICAL EXAGGERATION
GENERALIZED WATER TABLE
ASH
ASH PORE WATER
LITHOLOGIC CONTACT
MW-16BR
MW-16D
MW-16S
MW-12S
ABMW-2
MY-1001
WELL IN TRANSITION ZONE
WELL IN SAPROLITE MATERIAL
WELL IN ALLUVIUM MATERIAL
WELL IN COMPETENT BEDROCK
WELL IN ASH PORE WATER
NCDEQ WATER SUPPLY WELL
GENERALIZED GROUNDWATER
FLOW DIRECTION
GENERALIZED SUBSURFACE ASH
PORE WATER FLOW DIRECTION
BEDROCK
EXISTING GROUND SURFACE BASED ON A DRAWING PROVIDED BY THE WSP GROUP, TITLED "MAYO PLANT FINAL", DATED MAY 19, 2015.
HISTORIC GROUND SURFACE BASED ON THE 7-1/2' USGS TOPOGRAPHIC MAP FOR CLUSTER SPRINGS, VA DATED 1968.
PRIVATE WATER SUPPLY WELL INFORMATION WAS OBTAINED FROM A LIST PROVIDED BY DUKE ENERGY PROGRESS
SOURCE INFORMATION
NOTE:
CROSS SECTION C-C' IS LINEAR IN NATURE AND ALL
LOCATIONS NOT ALONG THE CROSS SECTION ARE
PROJECTED ONTO THE CROSS SECTION.
NOTES
1.GROUNDWATER WELLS WERE SAMPLED JUNE 19 - 20, 2017.
2.THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3 μg/L.
3.PROVISIONAL BACKGROUND CONCENTRATION FOR VANADIUM IS 0.974 μg/L WITHIN THE SURFICIAL FLOW LAYER,
5.90 μg/L WITHIN THE TRANSITION ZONE FLOW LAYER, AND 5.52 μg/L WITHIN THE BEDROCK FLOW LAYER.
4.ALL VERTICAL ELEVATIONS ARE MEASURED IN FEET, NORTH AMERICA VERTICAL DATUM (NAVD) OF 1988.
AT NEARBY ROXBORO PLANT, IN A SIMILAR GEOLOGIC SETTING, BACKGROUND CONCENTRATIONS
RANGE UP TO 30 mg/L.
LEGEND
PROGRESS
!(!(
!(!(!(
!(
!(
!(
!(
!(
&<
&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<&<&<&<
&<&<&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<&<
&<
&<
&<
&<&<
&<
&<
&<
&<&<&<
&>&>
&>&>
&>&>
&>&>
!(#*
!(#*
!(#*
!(#*
!(#*
!(#*
!(#*
")
")
!(#*!(#*!(#*
!(#*
&<
&>
&<
&<&<
!(
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADSOUTH CREEKEXPOSURE AREA
CRUTCHFIELD BRANCHEXPOSURE AREA
ASH BASINEXPOSURE AREA
NEW MAYO DR
OLD US HWY 501MULLINS LNR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
S-06
SW-CB1
BG-1
BG-2
CW-1 CW-1D
CW-2
CW-2D
CW-3
CW-4
CW-5
CW-6
ABMW-1 ABMW-2
ABMW-2BR ABMW-3
ABMW-3S
ABMW-4ABMW-4BR
ABMW-4D
MW-2 MW-3
MW-3BR
MW-4
MW-5BR
MW-6BR
MW-7BR
MW-7D
MW-8BR MW-8D
MW-8S
MW-9BR
MW-10BR
MW-11BR
MW-12D MW-12S
MW-13BR
MW-14BR
MW-15BR
MW-16BR
MW-16D MW-16S
ABMW-2BRL
DEP-1
DEP-2 DEP-3
S-01S-01A
S-02
S-02A
S-02B
S-03
S-04
S-07
S-08
S-09
P1 P1A
P2 P2A
P3P3A
P4 P4A
MW-17BR
SB-1
SB-2
SB-3
SB-4
SB-5
SB-6
SB-7
AB-1
AB-2
AB-3
AB-4
SW-CB2
SW-REF1
NOTES:GENERALIZED AREAL EXTENT OF MIGRATION REPRESENTED BY NCAC 02LEXCEEDANCES OF BORON, MANGANESE, AND STRONTIUM.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 12-1EXPOSURE AREASHUMAN HEALTH RISK ASSESSMENTMAYO ST EAM ELECTRIC PL ANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORT H C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Human Health.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
&<MONITORING WELL
&>PIEZOMETER
!(#*SOIL BORING
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
AREA OF CONCENTRATION IN GROUNDWATERABOVE NC2L (SEE NOTES)
ASH BASIN EXPOSURE AREA
CRUTCHFIELD BRANCH EXPOSURE AREA
SOUTH CREEK EXPOSURE AREA
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
!(!(
!(!(!(
!(
!(
!(
!(
!(
")
")
!(
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADMAYO LAKE
RAILROADFGDPONDS
R.O.W. 100'
SOUTH CREEKEXPOSURE AREA
CRUTCHFIELD BRANCHEXPOSURE AREA
ASH BASINEXPOSURE AREA
ASH BASINDOWNGRADIENTEXPOSURE AREA
NEW MAYO DR
OLD US HWY 501MULLINS LNR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
S-06
SW-CB1
S-01
S-01A
S-02
S-02A S-02B
S-03S-04
S-07
S-08
S-09
SW-CB2
SW-REF1
NOTES:GENERALIZED AREAL EXTENT OF MIGRATION REPRESENTED BY NCAC 02LEXCEEDANCES OF BORON, MANGANESE, AND STRONTIUM.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 12-2EXPOSURE AREASECOLOGICAL RISK A SSESSMENTMAYO ST EAM ELECTRIC PL ANTDUKE ENERGY PROGRESS, LLCROXBORO, N ORT H C AROLIN ADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/27/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Ecological Risk.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
AREA OF CONCENTRATION IN GROUNDWATERABOVE NC2L (SEE NOTES)
ASH BASIN EXPOSURE AREA
ASH BASIN DOWNGRADIENT EXPOSURE AREA
CRUTCHFIELD BRANCH EXPOSURE AREA
SOUTH CREEK EXPOSURE AREA
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHABMW-3S
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHMW-12S
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHMW-3
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHMW-16S
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
FIGURE 14-1
TIME VERSUS CONCENTRATION
pH IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Nov-10Apr-12Aug-13Dec-14May-16Sep-17pHBG-2
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Nov-10Apr-12Aug-13Dec-14May-16Sep-17pHCW-3
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHMW-16D
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHABMW-4D
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Nov-10Apr-12Aug-13Dec-14May-16Sep-17pHCW-2
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHMW-12D
FIGURE 14-2
TIME VERSUS CONCENTRATION
pH IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHABMW-2BRL
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHABMW-2BR
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHABMW-4BR
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Nov-10Apr-12Aug-13Dec-14May-16Sep-17pHBG-1
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Nov-10Apr-12Aug-13Dec-14May-16Sep-17pHCW-2D
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Nov-10Apr-12Aug-13Dec-14May-16Sep-17pHCW-6
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHMW-3BR
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Dec-14Apr-15Jul-15Oct-15Jan-16May-16Aug-16Nov-16Mar-17Jun-17Sep-17pHMW-16BR
FIGURE 14-3
TIME VERSUS CONCENTRATION
pH IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)ABMW-3S
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)MW-12S
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)MW-3
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)MW-16S
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
FIGURE 14-4
TIME VERSUS CONCENTRATION
ARSENIC IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
ALLUVIUM
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-5
TIME VERSUS CONCENTRATION
ARSENIC IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
0
20
40
60
80
100
120
140
160
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)ABMW-4D
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Arsenic Concentration (μg/L)BG-2
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Arsenic Concentration (μg/L)CW-2
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Arsenic Concentration (μg/L)CW-3
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)MW-12D
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)MW-16D
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)ABMW-2BR
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)ABMW-2BRL
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)ABMW-4BR
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Arsenic Concentration (μg/L)BG-1
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Arsenic Concentration (μg/L)CW-2D
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)MW-3BR
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Arsenic Concentration (μg/L)CW-6
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Arsenic Concentration (μg/L)MW-16BR
FIGURE 14-6
TIME VERSUS CONCENTRATION
ARSENIC IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)MW-3
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)MW-16S
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)ABMW-3S
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)MW-12S
FIGURE 14-7
TIME VERSUS CONCENTRATION
BARIUM IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
200
400
600
800
1000
1200
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)ABMW-4D
0
200
400
600
800
1000
1200
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Barium Concentration (μg/L)BG-2
0
200
400
600
800
1000
1200
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Barium Concentration (μg/L)CW-2
0
200
400
600
800
1000
1200
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Barium Concentration (μg/L)CW-3
0
200
400
600
800
1000
1200
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)MW-12D
0
200
400
600
800
1000
1200
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)MW-16D
FIGURE 14-8
TIME VERSUS CONCENTRATION
BARIUM IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)ABMW-2BR
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)ABMW-4BR
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Barium Concentration (μg/L)CW-2D
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)MW-3BR
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)ABMW-2BRL
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Barium Concentration (μg/L)BG-1
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Barium Concentration (μg/L)CW-6
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Barium Concentration (μg/L)MW-16BR
FIGURE 14-9
TIME VERSUS CONCENTRATION
BARIUM IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
200
400
600
800
1000
1200
1400
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)ABMW-3S
0
200
400
600
800
1000
1200
1400
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)MW-12S
0
200
400
600
800
1000
1200
1400
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)MW-3
0
200
400
600
800
1000
1200
1400
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)MW-16S
FIGURE 14-10
TIME VERSUS CONCENTRATION
BORON IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
1000
2000
3000
4000
5000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)ABMW-4D
0
1000
2000
3000
4000
5000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Boron Concentration (μg/L)CW-2
0
1000
2000
3000
4000
5000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)MW-12D
0
1000
2000
3000
4000
5000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)MW-16D
0
1000
2000
3000
4000
5000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Boron Concentration (μg/L)CW-3
0
1000
2000
3000
4000
5000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Boron Concentration (ug/L)BG-2
FIGURE 14-11
TIME VERSUS CONCENTRATION
BORON IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (ug/L)ABMW-2BR
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (ug/L)ABMW-4BR
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Boron Concentration (μg/L)CW-2D
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)MW-3BR
0
100
200
300
400
500
600
700
800
May-16Aug-16Nov-16Mar-17Jun-17Sep-17Boron Concentration (μg/L)ABMW-2BRL
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Boron Concentration (μg/L)BG-1
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Boron Concentration (μg/L)CW-6
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Boron Concentration (μg/L)MW-16BR
FIGURE 14-12
TIME VERSUS CONCENTRATION
BORON IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-13
TIME VERSUS CONCENTRATION
TOTAL AND HEXAVALENT
CHROMIUM
IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Total Chromium - Alluvial
Total Chromium - Surficial
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)MW-3
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)ABMW-3S
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)MW-16S
0
1
2
3
4
5
6
7
8
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)MW-12S
Hexavalent Chromium - Surficial
Hexavalent Chromium - Alluvial
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
0.5
1
1.5
2
2.5
3
3.5
4
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)ABMW-4D
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Chromium Concentration (μg/L)BG-2
0
1
2
3
4
5
6
7
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Chromium Concentration (μg/L)CW-2
0
2
4
6
8
10
12
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Chromium Concentration (μg/L)CW-3
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)MW-12D
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)MW-16D
FIGURE 14-14
TIME VERSUS CONCENTRATION
TOTAL AND HEXAVALENT
CHROMIUM
IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Total Chromium
Transition Zone
Hexavalent Chromium
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)ABMW-2BR
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)ABMW-4BR
0
1
2
3
4
5
6
7
8
9
10
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Chromium Concentration (μg/L)CW-2D
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)MW-3BR
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)MW-16BR
0
1
2
3
4
5
6
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Chromium Concentration (μg/L)CW-6
0
2
4
6
8
10
12
14
16
18
20
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Chromium Concentration (μg/L)BG-1
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Chromium Concentration (μg/L)ABMW-2BRL
FIGURE 14-15
TIME VERSUS CONCENTRATION
TOTAL AND HEXAVALENT
CHROMIUM IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Hexavalent Chromium
Bedrock
Total Chromium
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-16
TIME VERSUS CONCENTRATION
COBALT IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)MW-3
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)MW-16S
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)ABMW-3S
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)MW-12S
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
1
2
3
4
5
6
7
8
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)ABMW-4D
0
1
2
3
4
5
6
7
8
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)CW-2
0
1
2
3
4
5
6
7
8
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)CW-3
0
1
2
3
4
5
6
7
8
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)BG-2
0
1
2
3
4
5
6
7
8
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)MW-12D
0
1
2
3
4
5
6
7
8
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)MW-16D
FIGURE 14-17
TIME VERSUS CONCENTRATION
COBALT IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)ABMW-2BR
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)ABMW-4BR
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)CW-2D
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)MW-3BR
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)MW-16BR
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)CW-6
0
0.2
0.4
0.6
0.8
1
1.2
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Cobalt Concentration (μg/L)BG-1
0
0.2
0.4
0.6
0.8
1
1.2
1.4
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Cobalt Concentration (μg/L)ABMW-2BRL
FIGURE 14-18
TIME VERSUS CONCENTRATION
COBALT IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-19
TIME VERSUS CONCENTRATION
IRON IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
0
500
1000
1500
2000
2500
3000
3500
4000
4500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)MW-3
0
2000
4000
6000
8000
10000
12000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)ABMW-3S
0
2000
4000
6000
8000
10000
12000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)MW-12S
0
500
1000
1500
2000
2500
3000
3500
4000
4500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)MW-16S
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-20
TIME VERSUS CONCENTRATION
IRON IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
0
10000
20000
30000
40000
50000
60000
70000
80000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)ABMW-4D
0
500
1000
1500
2000
2500
3000
3500
4000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Iron Concentration (μg/L)BG-2
0
500
1000
1500
2000
2500
3000
3500
4000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Iron Concentration (μg/L)CW-2
0
500
1000
1500
2000
2500
3000
3500
4000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)MW-12D
0
500
1000
1500
2000
2500
3000
3500
4000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)MW-16D
0
500
1000
1500
2000
2500
3000
3500
4000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Iron Concentration (μg/L)CW-3
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
500
1000
1500
2000
2500
3000
3500
4000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)ABMW-4BR
0
500
1000
1500
2000
2500
3000
3500
4000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Iron Concentration (μg/L)CW-2D
0
500
1000
1500
2000
2500
3000
3500
4000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)MW-3BR
0
500
1000
1500
2000
2500
3000
3500
4000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)ABMW-2BR
0
500
1000
1500
2000
2500
3000
3500
4000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)ABMW-2BRL
0
500
1000
1500
2000
2500
3000
3500
4000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Iron Concentration (μg/L)BG-1
0
500
1000
1500
2000
2500
3000
3500
4000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Iron Concentration (μg/L)CW-6
0
500
1000
1500
2000
2500
3000
3500
4000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Iron Concentration (μg/L)MW-16BR
FIGURE 14-21
TIME VERSUS CONCENTRATION
IRON IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)MW-3
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)ABMW-3S
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)MW-12S
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)MW-16S
FIGURE 14-22
TIME VERSUS CONCENTRATION
MANGANESE IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
1000
2000
3000
4000
5000
6000
7000
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)ABMW-4D
0
200
400
600
800
1000
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Manganese Concentration (μg/L)CW-2
0
100
200
300
400
500
600
700
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)MW-12D
0
100
200
300
400
500
600
700
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)MW-16D
0
100
200
300
400
500
600
700
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Manganese Concentration (μg/L)CW-3
0
100
200
300
400
500
600
700
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Manganese Concentration (μg/L)BG-2
FIGURE 14-23
TIME VERSUS CONCENTRATION
MANGANESE IN
TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)ABMW-2BR
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)ABMW-4BR
0
200
400
600
800
1000
1200
1400
1600
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Manganese Concentration (μg/L)CW-2D
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)MW-3BR
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)ABMW-2BRL
0
200
400
600
800
1000
1200
1400
1600
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Manganese Concentration (μg/L)BG-1
0
200
400
600
800
1000
1200
1400
1600
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Manganese Concentration (μg/L)CW-6
0
200
400
600
800
1000
1200
1400
1600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Manganese Concentration (μg/L)MW-16BR
FIGURE 14-24
TIME VERSUS CONCENTRATION
MANGANESE IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-25
TIME VERSUS CONCENTRATION
MOLYBDENUM IN
SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)MW-3
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)MW-16S
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)ABMW-3S
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)MW-12S
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-26
TIME VERSUS CONCENTRATION
MOLYBDENUM IN
TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
0
50
100
150
200
250
300
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)ABMW-4D
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)BG-2
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)CW-2
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)CW-3
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)MW-12D
0
2
4
6
8
10
12
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)MW-16D
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
2
4
6
8
10
12
14
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)ABMW-2BR
0
2
4
6
8
10
12
14
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)ABMW-4BR
0
2
4
6
8
10
12
14
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)CW-2D
0
2
4
6
8
10
12
14
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)MW-3BR
0
2
4
6
8
10
12
14
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)ABMW-2BRL
0
2
4
6
8
10
12
14
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Molybdenum Concentration (μg/L)BG-1
0
2
4
6
8
10
12
14
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)CW-6
0
10
20
30
40
50
60
70
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Molybdenum Concentration (μg/L)MW-16BR
FIGURE 14-27
TIME VERSUS CONCENTRATION
MOLYBDENUM IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-28
TIME VERSUS CONCENTRATION
SULFATE IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
0
5
10
15
20
25
30
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)MW-3
0
5
10
15
20
25
30
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)MW-12S
0
5
10
15
20
25
30
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)MW-16S
0
5
10
15
20
25
30
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)ABMW-3S
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
10
20
30
40
50
60
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)ABMW-4D
0
10
20
30
40
50
60
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Sulfate Concentration (mg/L)CW-2
0
10
20
30
40
50
60
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)MW-12D
0
10
20
30
40
50
60
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Sulfate Concentration (mg/L)BG-2
0
10
20
30
40
50
60
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Sulfate Concentration (mg/L)CW-3
0
10
20
30
40
50
60
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)MW-16D
FIGURE 14-29
TIME VERSUS CONCENTRATION
SULFATE IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
10
20
30
40
50
60
70
80
90
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)ABMW-2BR
0
10
20
30
40
50
60
70
80
90
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)ABMW-2BRL
0
10
20
30
40
50
60
70
80
90
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)ABMW-4BR
0
10
20
30
40
50
60
70
80
90
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Sulfate Concentration (mg/L)CW-2D
0
10
20
30
40
50
60
70
80
90
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)MW-3BR
0
10
20
30
40
50
60
70
80
90
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Sulfate Concentration (mg/L)MW-16BR
0
10
20
30
40
50
60
70
80
90
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Sulfate Concentration (mg/L)CW-6
0
10
20
30
40
50
60
70
80
90
Nov-10Apr-12Aug-13Dec-14May-16Sep-17Sulfate Concentration (mg/L)BG-1
FIGURE 14-30
TIME VERSUS CONCENTRATION
SULFATE IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
100
200
300
400
500
600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)MW-3
0
100
200
300
400
500
600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)MW-16S
0
100
200
300
400
500
600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)ABMW-3S
0
100
200
300
400
500
600
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)MW-12S
FIGURE 14-31
TIME VERSUS CONCENTRATION
TOTAL DISSOLVED SOLIDS IN
SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
SAPROLITE
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)ABMW-4D
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17TDS Concentration (mg/L)BG-2
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17TDS Concentration (mg/L)CW-2
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17TDS Concentration (mg/L)CW-3
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)MW-12D
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)MW-16D
FIGURE 14-32
TIME VERSUS CONCENTRATION
TOTAL DISSOLVED SOLIDS IN
TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)ABMW-2BR
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)ABMW-4BR
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17TDS Concentration (mg/L)CW-2D
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)MW-3BR
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)MW-16BR
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17TDS Concentration (mg/L)CW-6
0
100
200
300
400
500
600
700
800
Nov-10Apr-12Aug-13Dec-14May-16Sep-17TDS Concentration (mg/L)BG-1
0
100
200
300
400
500
600
700
800
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17TDS Concentration (mg/L)ABMW-2BRL
FIGURE 14-33
TIME VERSUS CONCENTRATION
TOTAL DISSOLVED SOLIDS IN
BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)MW-3
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μug/L)MW-16S
0
0.2
0.4
0.6
0.8
1
1.2
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)ABMW-3S
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)MW-12S
FIGURE 14-34
TIME VERSUS CONCENTRATION
VANADIUM IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Alluvial
Surficial
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
5
10
15
20
25
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)ABMW-4D
0
5
10
15
20
25
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)CW-2
0
5
10
15
20
25
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)MW-12D
0
5
10
15
20
25
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)BG-2
0
5
10
15
20
25
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)CW-3
0
5
10
15
20
25
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)MW-16D
FIGURE 14-35
TIME VERSUS CONCENTRATION
VANADIUM IN TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Transition Zone
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)ABMW-2BR
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)ABMW-4BR
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)CW-2D
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)MW-3BR
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)MW-16BR
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)CW-6
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)BG-1
0
1
2
3
4
5
6
7
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Vanadium Concentration (μg/L)ABMW-2BRL
FIGURE 14-36
TIME VERSUS CONCENTRATION
VANADIUM IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
FIGURE 14-37
TIME VERSUS CONCENTRATION
STRONTIUM IN SURFICIAL ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
ALLUVIUM
SAPROLITE
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
(September 1, 2017)
Alluvial
Surficial
0
50
100
150
200
250
300
350
400
450
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)ABMW-3S
0
50
100
150
200
250
300
350
400
450
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)MW-12S
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
50
100
150
200
250
300
350
400
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)MW-3
0
50
100
150
200
250
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)MW-16S
FIGURE 14-38
TIME VERSUS CONCENTRATION
STRONTIUM IN
TRANSITION ZONE
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
(September 1, 2017)
Transition Zone
0
500
1000
1500
2000
2500
3000
3500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)MW-12D
0
500
1000
1500
2000
2500
3000
3500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)ABMW-4D
0
500
1000
1500
2000
2500
3000
3500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)CW-2
0
500
1000
1500
2000
2500
3000
3500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)BG-2
0
500
1000
1500
2000
2500
3000
3500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)CW-3
0
500
1000
1500
2000
2500
3000
3500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)MW-16D
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)ABMW-2BR
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)ABMW-4BR
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)CW-2D
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)MW-3BR
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)MW-16BR
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)CW-6
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)BG-1
0
500
1000
1500
2000
2500
Dec-14Jul-15Jan-16Aug-16Mar-17Sep-17Strontium Concentration (μg/L)ABMW-2BRL
FIGURE 14-39
TIME VERSUS CONCENTRATION
STRONTIUM IN BEDROCK
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, LLC
ROXBORO, NORTH CAROLINA
148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA 29601
PHONE [phone]
www.synterracorp.com
DRAWN BY: E. KINSEY
PROJECT MANAGER: J. WYLIE
LAYOUT:
DATE: AUGUST 2017
P:\Duke Energy Progress.1026\105. Mayo Ash Basin GW
Assessment Plan\CSA_UPDATE_2017\CSA Sup 2\Figures
15 NCAC 02L Standard
LEGEND
Provisional Background
Threshold Values (PBTVs)
(September 1, 2017)
Bedrock
Note: Data presented may include lab-qualified results. Refer to analytical data table notes for qualifier definitions. Non-detect analytical results are plotted at the corresponding reporting limit.
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
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<<<<<<<<<
<
<<<<<<<
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&<
&<
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&<
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&<
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HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
ABMW-4D26.9
MW-16BRND
ABMW-2957 M4ABMW-2BR3.06
ABMW-2BRL1.88 ABMW-3191
MW-7BRND
MW-7DND
ABMW-1323
MW-2ND
MW-3ND
MW-12DND
MW-12S1.11
BG-1ND
BG-2ND
CW-1ND
CW-1DND
CW-2ND
CW-2DND
CW-3ND
CW-4ND
CW-5ND
CW-6ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-18DND
MW-19BRND
MW-19DNDABMW-4547
ABMW-4BR1.26
MW-5BR1.06
MW-13BRND
MW-14BRND
ABMW-3SND
MW-4ND
MW-16DNDMW-16SND
NOTES:ARSENIC CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 10ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-40GROUNDWATER CONCENTRATIONTREND ANALYSIS -ARSENIC IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<&<
&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-7D18
MW-12D15
BG-184
BG-247
MW-8BR22
MW-18BR96
MW-19BR53
MW-19D62
MW-48
ABMW-4592
ABMW-2BRL72
MW-7BR157
ABMW-1520
MW-251
MW-356
MW-12S13
CW-1ND
CW-1DND
CW-427
CW-2122
CW-2D31
CW-642
CW-316
MW-3BR38
MW-10BRND
MW-18DND
ABMW-4BR113
ABMW-4D890
CW-546
MW-5BR37
MW-13BR32
MW-14BR15
ABMW-2113
ABMW-3258 ABMW-3S22
MW-16BR12
MW-16D6
MW-16S70
NOTES:BARIUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 700ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-41GROUNDWATER CONCENTRATIONTREND ANALYSIS -BARIUM IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
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&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
ABMW-4D3470
MW-3982
CW-2808 B3
ABMW-46520
ABMW-32000
ABMW-3S1330
MW-16S179
MW-7BRND
MW-7DND
ABMW-15820
MW-2ND
MW-12DND
MW-12SND
BG-1ND
CW-1DND
BG-2ND
CW-1ND
CW-2D290 B3
CW-6ND
CW-3ND
CW-4ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-18DND
MW-19BRND
MW-19DND
ABMW-4BRND
CW-5ND
MW-5BRND
MW-13BRND
MW-14BRND
ABMW-28800ABMW-2BRND
ABMW-2BRLND
MW-4ND
MW-16BRND
MW-16DND
NOTES:BORON CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 700ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-42GROUNDWATER CONCENTRATIONTREND ANALYSIS -BORON IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<&<
&<&<
&<&<&<
&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-7BR52.5 B1
MW-7D53.5 B1
ABMW-150.6 B2
MW-218.6
MW-329.5
MW-12D12.1
MW-12S5.1
BG-112.9
CW-1D47.6
CW-2D85.7
CW-412.7
CW-556.1
CW-6112
BG-254.6
CW-19.73
CW-217.1
CW-364.5
MW-3BR148
MW-8BR74.4
MW-10BR32
MW-18BR99.4
MW-18D42.1
MW-19BR126
MW-19D110ABMW-4122
ABMW-4BR75.3
ABMW-4D119
MW-5BR93.3
MW-13BR64.4
MW-14BR13.9
ABMW-250.4
ABMW-2BR76.5
ABMW-361.4
ABMW-3S3.32
MW-430.1
MW-16BR29.4
MW-16D26
MW-16S14.1
NOTES:CALCIUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD ISNOT ESTABLISHED.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-43GROUNDWATER CONCENTRATIONTREND ANALYSIS -CALCIUM IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-7BR11
MW-7D73
ABMW-113
MW-214
MW-350
MW-12D4.3
MW-12S0.56
BG-110
BG-235
CW-118
CW-1D10
CW-250
CW-2D35
CW-692
CW-392
CW-47.3
MW-3BR150
MW-8BR110
MW-10BR20
MW-18BR66
MW-18D25
MW-19BR160
MW-19D150ABMW-412
ABMW-4BR5.2
ABMW-4D13
CW-539
MW-5BR69
MW-13BR33
MW-14BR13
ABMW-215
ABMW-2BR28
ABMW-370
ABMW-3S12
MW-47.6
MW-16BR8.1
MW-16D10
MW-16S35
NOTES:CHLORIDE CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS250 mg/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-44GROUNDWATER CONCENTRATIONTREND ANALYSIS -CHLORIDE IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<&<&<
&<&<
&<&<
&<&<
&<&<&<&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<&<&<
&<&<&<
&<
&<&<
&<
&<&<
&<&<
&<&<
&<&<&<&<
&<&<&<&<
&<&<&<&<&<&<
&<&<&<
&<&<
&<&<
&<&<&<&<&<&<&<&<&<&<
&<&<
&<&<&<&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
MW-7BR(VI)ND
MW-7BR(TOTAL)ND
MW-7D(VI)ND
MW-7D(TOTAL)ND
ABMW-1(TOTAL)ND
MW-2(TOTAL)ND MW-3(VI)0.19
MW-12D(VI)0.63
MW-12D(TOTAL)1.25
MW-12S (TOTAL)1.06
BG-2(TOTAL)ND
CW-1D(TOTAL)ND
CW-2D (TOTAL)ND
CW-4(TOTAL)ND
CW-5 (TOTAL)ND
CW-6(TOTAL)ND
BG-1 (VI)0.25
BG-1(TOTAL)ND
BG-2 (VI)ND
CW-1 (VI)0.21
CW-1(TOTAL)1.55
CW-1D(VI)0.041
CW-2 (VI)0.19 M1
CW-2 (TOTAL)ND
CW-3 (VI)0.083
CW-3 (TOTAL)9.58
MW-3BR(VI)ND
MW-3BR(TOTAL)ND
MW-8BR(VI)ND
MW-8BR(TOTAL)2.34
MW-10BR (VI)0.074
MW-10BR(TOTAL)ND
MW-18BR(TOTAL)ND
MW-18D(TOTAL)ND
MW-19BR(TOTAL)ND
MW-19D(VI)NDABMW-4 (VI)ND
ABMW-4(TOTAL)ND
ABMW-4BR(VI)ND
MW-5BR (VI)ND
MW-5BR(TOTAL)ND
MW-13BR(VI)ND
MW-14BR(VI)0.048
MW-14BR(TOTAL)ND
ABMW-2(TOTAL)ND
ABMW-2BR(TOTAL)ND
ABMW-3 (VI)ND
ABMW-3(TOTAL)ND
MW-4 (VI)0.06
MW-4(TOTAL)ND
MW-16BR(VI)ND
MW-16D(TOTAL)ND
MW-16S (VI)0.028
ABMW-1(VI)0.83
MW-12S(VI)4.4
MW-19BR (VI)ND
MW-13BR(TOTAL)1.54
MW-2(VI)0.08
CW-6 (VI)ND
CW-4 (VI)0.26
CW-5(VI)0.043
MW-16D(VI)0.67
ABMW-2BRL (VI)0.91
ABMW-4D (TOTAL)1.3
MW-16S(TOTAL)2.66
MW-16BR(TOTAL)ND
ABMW-3S(TOTAL)ND
ABMW-3S (VI)ND
ABMW-2BRL(TOTAL)ND
ABMW-2BR (VI)0.7
ABMW-2 (VI)0.084
ABMW-4D (VI)ND
ABMW-4BR(TOTAL)ND
MW-19D(TOTAL)ND
MW-18D (VI)0.054
MW-18BR (VI)ND
CW-2D(VI)NDMW-3(TOTAL)ND
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
NOTES:CHROMIUM (VI & TOTAL) CONCENTRATION IS MEASURED IN µg/L AND THE NCAC 02LSTANDARD IS 10 µg/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-45GROUNDWATER CONCENTRATIONTREND ANALYSIS -CHROMIUM (VI & TOTAL) IN ALL FLOW LAYERSDUKE ENERGY PROGRESS, LLCMAYO STEAM ELECTRIC PLANTROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis - ChromeMix.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<&<
&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
ABMW-42.5
ABMW-4D5.9
MW-13BR3.08
MW-7BRND
MW-7DND
ABMW-13.87
MW-3ND
MW-12DND
MW-12S1.59
BG-1ND
BG-2ND
CW-1ND
CW-1DND
CW-2ND
CW-2DND
CW-3ND
CW-5ND
CW-6ND
CW-4ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-18DND
MW-19BRND
MW-19DND
ABMW-4BRND
MW-5BRND
MW-14BRND
ABMW-2NDABMW-2BRND
ABMW-2BRLND
ABMW-3ND
ABMW-3S2.04
MW-4ND
MW-16BRND
MW-16DND
MW-16SND
NOTES:COBALT CONCENTRATION IS MEASURED IN ug/L AND THE IMAC STANDARD IS 1 ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 14-46GROUNDWATER CONCENTRATIONTREND ANALYSIS -COBALT IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-2574
BG-149
MW-3BR313
MW-8BR587
MW-18DND
MW-4182
MW-16S94
MW-12S6820
CW-62040
MW-19D2030
ABMW-47170
MW-5BR7100
ABMW-2BR1230
MW-16BR505
MW-7BR369
MW-7D353
ABMW-11450
MW-3ND
MW-12D242
BG-2500
CW-1289
CW-1D27
CW-2ND
CW-2D226
CW-3211
CW-4153
MW-10BRND
MW-18BR241
MW-19BR1080
ABMW-4BR438
ABMW-4D58800
CW-5360
MW-13BR3260
MW-14BR52
ABMW-295
ABMW-315800
ABMW-3S1520
MW-16D316
NOTES:IRON CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 300ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-47GROUNDWATER CONCENTRATIONTREND ANALYSIS -IRON IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-7BR198
MW-7D77
MW-2564
MW-12D45
CW-319
BG-16
MW-3BR550
MW-8BR278
MW-18BR1360
MW-18DND
MW-19BR1220
ABMW-2452
MW-31280
CW-61440
ABMW-42620
ABMW-4D6960
ABMW-2BR242
MW-16BR158
ABMW-1982
MW-12S395
BG-2117
CW-118
CW-2118
CW-1D11
CW-2D785
CW-4ND
MW-10BR54
MW-19D1100
ABMW-4BR363
CW-5464
MW-5BR1830
MW-13BR383
MW-14BR130
ABMW-3836
ABMW-3S364
MW-4178
MW-16D124MW-16S129
NOTES:MANGANESE CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARDIS 50 ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-48GROUNDWATER CONCENTRATIONTREND ANALYSIS -MANGANESE IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
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&<
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&<
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&<&<
&<
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&<
&<
&<
&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-8BR2.46
MW-18BR1.85
ABMW-4D8.1
MW-13BR2.2
MW-16D5.98
ABMW-4BR8.57
ABMW-339.8
MW-7BR2.39
MW-7DND
ABMW-1304
MW-21.63
MW-3ND
MW-12DND
MW-12S1.97
BG-1ND
BG-2ND
CW-1ND
CW-1D22
CW-2ND
CW-2D1.13
CW-63.53
CW-3ND
CW-4ND
MW-3BRND
MW-10BRND
MW-18DND
MW-19BRND
MW-19DND
ABMW-4471
CW-5ND
MW-5BR1.02
MW-14BR4.34
ABMW-2BR10.9
ABMW-2BRL2 ABMW-3SND
MW-42.7
MW-16BR49.2MW-16SND
NOTES:MOLYBDENUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARDIS NOT ESTABLISHED.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-49GROUNDWATER CONCENTRATIONTREND ANALYSIS -MOLYBDENUM IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
ABMW-4D1740
CW-2D411
ABMW-43160
MW-16S178
MW-7BR1040
MW-7D447
ABMW-11890
MW-2184
MW-3334
MW-12D85
MW-12S27
BG-1169
BG-2309
CW-167
CW-1D172
CW-2232
CW-6336
CW-3317
CW-4132
MW-3BR402
MW-8BR342
MW-10BR201
MW-18BR477
MW-18D159
MW-19BR447
MW-19D398
ABMW-4BR1940
CW-5167
MW-5BR231
MW-13BR360
MW-14BR143
ABMW-21380ABMW-2BR1110
ABMW-2BRL2320
ABMW-31650
ABMW-3S75
MW-4112
MW-16BR109
MW-16D176
NOTES:STRONTIUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD ISNOT ESTABLISHED.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-50GROUNDWATER CONCENTRATIONTREND ANALYSIS -STRONTIUM IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<&<
&<&<
&<
&<&<
&<
&<
&<
&<&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-18BR13
ABMW-4D0.78
CW-424
ABMW-456
ABMW-236
ABMW-333
MW-16S10
MW-7BR2.8
MW-7D10
ABMW-121
MW-218
MW-322
MW-12D1.1
MW-12S0.95
BG-10.27
BG-25.5
CW-18.5
CW-1D3.3
CW-237
CW-2D61
CW-638
CW-315
MW-3BR11
MW-8BR37
MW-10BR87
MW-18D37
MW-19BR53
MW-19D56
MW-19D56
ABMW-4BR30
CW-56.3
MW-5BR1.4
MW-13BR15
MW-14BR8.9
ABMW-2BR8.2
ABMW-3S0.49
MW-439
MW-16BR0.62
MW-16D7.6
NOTES:SULFATE CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS250 mg/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-51GROUNDWATER CONCENTRATIONTREND ANALYSIS -SULFATE IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
&<
&<
&<&<
&<
&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<&<
&<&<
&<
&<
&<&<&<&<&<
&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
ABMW-4D600
MW-16S140
MW-7BR270
MW-7D370
ABMW-1370
MW-2210
MW-3200
MW-12D96
MW-12S51
BG-1110
BG-2320
CW-1120
CW-1D210
CW-2160
CW-2D320
CW-6520
CW-3390
CW-4160
MW-3BR700
MW-8BR490
MW-10BR310
MW-18BR440
MW-18D280
MW-19BR730
MW-19D620ABMW-4560
ABMW-4BR330
CW-5310
MW-5BR440
MW-13BR340
MW-14BR210
ABMW-2440
ABMW-2BR360
ABMW-3350
ABMW-3S96
MW-4210
MW-16BR200
MW-16D160
NOTES:TOTAL DISSOLVED SOLIDS (TDS) CONCENTRATION IS MEASURED IN ug/L AND THENCAC 02L STANDARD IS 500 mg/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-52GROUNDWATER CONCENTRATIONTREND ANALYSIS -TOTAL DISSOLVED SOLIDS IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<&<
&<
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&<
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&<&<
&<&<
&<&<&<
&<&<
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&<
&<&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-7D0.734
MW-18BRND
MW-18D1.3
MW-19BRND
ABMW-20.87
MW-16BRND
MW-8BR1.22MW-7BRND
ABMW-156.7
MW-20.684
MW-3ND
MW-12D0.805
MW-12S2.8
BG-13.76
BG-25.06
CW-11.08
CW-1D1.19
CW-2ND
CW-2D0.677
CW-6ND
CW-31.92
CW-41.34
MW-3BRND
MW-10BR2.11
MW-19DND
ABMW-43.66
ABMW-4BR0.308
ABMW-4D10.4
CW-5ND
MW-5BRND
MW-13BRND
MW-14BR2.45
ABMW-2BRND
ABMW-30.475ABMW-3SND
MW-41.03
MW-16D0.795MW-16SND
NOTES:VANADIUM CONCENTRATION IS MEASURED IN ug/L AND THE IMAC STANDARD IS 0.3ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-53GROUNDWATER CONCENTRATIONTREND ANALYSIS -VANADIUM IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
&<
&<
&<&<
&<
&<&<
&<&<
&<
&<
&<
&<
&<
&<&<&<&<
&<&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<&<
&<&<
&<
&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADRAILROADRAILROADR.O.W. 100'
FGDPONDS MAYO LAKE
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
MW-25.7
MW-16BR7.9
ABMW-2BRL7.8
ABMW-27.8
MW-35.9
MW-12D5.9
MW-12S6.2
BG-26.5
CW-15.9
CW-1D7.0
CW-25.2
CW-2D6.7
CW-36.5
CW-46.1
CW-56.7
CW-66.5
ABMW-17.7 ABMW-2BR7.8
ABMW-36.9ABMW-3S4.9
ABMW-47.4
ABMW-4BR7.8BG-15.6
MW-3BR7.0
MW-46.9
MW-5BR7.1
MW-8BR6.4
MW-10BR6.2
MW-13BR7.1
MW-14BR6.6
MW-16D6.9MW-16S6.7
MW-18BR7.1
MW-18D6.4
MW-19BR7.0
MW-19D6.8
MW-7BRND
MW-7DND
NOTES:pH CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS A RANGEOF 6.5 - 8.5 S.U.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANE
FIGURE 14-54GROUNDWATER CONCENTRATIONTREND ANALYSIS -pH IN ALL FLOW LAYERSMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<MONITORING WELL
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
UNKNOWN CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-053.05
S-06<1
S-09<1
SW-CB2<1
SW-CBT1<1
SW-REF1<1
NOTES:ARSENIC CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 10ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-55GROUNDWATER CONCENTRATIONTREND ANALYSIS -ARSENIC IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-08<1
S-03<1
S-02<1 S-02B<1
SW-CB1<1
S-042.66S-012.24 S-10NA
S-01A<1
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-0535
SW-CB290
S-0624
S-0965
SW-CBT131
SW-REF125
NOTES:BARIUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 700ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-56GROUNDWATER CONCENTRATIONTREND ANALYSIS -BARIUM IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")S-0345
S-04136
S-02122
S-01139
S-0881
S-02B32
SW-CB151
S-10NA
S-01A25
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-051100
S-06<50
S-09<50
SW-CB2973
SW-CBT1<50
SW-REF1<50
NOTES:BORON CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 700ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-57GROUNDWATER CONCENTRATIONTREND ANALYSIS -BORON IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-081830
S-041270
S-021580 S-02B1660
SW-CB11250S-011850 S-031170 S-10NA
S-01A213
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-0531.5 B1
S-0611.5 B2
S-0925.6 B2
SW-CB225.6 B3
SW-CBT113.1 B2
SW-REF16.5 B2
NOTES:CALCIUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD ISNOT ESTABLISHED.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-58GROUNDWATER CONCENTRATIONTREND ANALYSIS -CALCIUM IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-10NA
S-0423.5
S-01A17.1
S-0828.6 B1
S-0327.8 B2
S-0224.2 B2
S-0123.6 B2
S-02B34.1 B2
SW-CB126.9 B2
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-0547
S-069.3
S-0920
SW-CB241
SW-CBT19.2
SW-REF14.2
NOTES:CHLORIDE CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS250 mg/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-59GROUNDWATER CONCENTRATIONTREND ANALYSIS -CHLORIDE IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-1031
S-0880
S-0455
S-0353
S-0263
S-0157
S-02B62
S-01A16 SW-CB150
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
SW-REF1(TOTAL)<1
SW-REF1(VI)<0.12 D3RAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADSW-CB2 (VI)<0.12 D3
SW-CBT1 (VI)0.037
S-05(TOTAL)<1
S-06(TOTAL)<1
S-09(TOTAL)<1
S-09(VI)NA
S-06(VI)NA
S-05 (VI)NA
SW-CBT1(TOTAL)<1
SW-CB2(TOTAL)<1
OLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
NOTES:CHROMIUM (VI & TOTAL) CONCENTRATION IS MEASURED IN µg/L AND THE NCAC 02LSTANDARD IS 10 µg/L.
ND = NON-DETECTTHE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 14-60GROUNDWATER CONCENTRATIONTREND ANALYSIS -CHROMIUM (VI & TOTAL) IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW - ChromeMix.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANT SITEBOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")!(
!(
!(!(
!(
!(
!(
!(
")
S-08 (TOTAL)<1
S-04 (TOTAL)<1
S-03 (TOTAL)<1
S-02 (TOTAL)<1
S-01 (TOTAL)<1
S-02B (TOTAL)<1
SW-CB1 (TOTAL)<1
SW-CB1 (VI)<0.12 D3
S-10 (VI)NA
S-08 (VI)NA
S-04 (VI)NA
S-03 (VI)NA
S-02 (VI)NA
S-02B (VI)NA
S-01A (VI)NA
S-10 (TOTAL)NA
S-01A (TOTAL)<1
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
DECREASING CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-05NA
S-06NA
S-09NA
SW-CB21.48
SW-REF1<1
SW-CBT1<1
NOTES:COBALT CONCENTRATION IS MEASURED IN ug/L AND THE IMAC STANDARD IS 1 ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 14-61GROUNDWATER CONCENTRATIONTREND ANALYSIS -COBALT IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
SW-CB1<1
S-10NA
S-08NA
S-04NA
S-03NA
S-02NA
S-01NA
S-02BNA
S-01ANA
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-06412 B2
S-0911900 B2
SW-CB22140
SW-CBT149
S-0538
SW-REF11620
NOTES:IRON CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS 300ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-62GROUNDWATER CONCENTRATIONTREND ANALYSIS -IRON IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-0414200
S-024320 B2
S-0114700 B2
S-081190
SW-CB1597
S-03174 B2
S-02B74 B2
S-10NA
S-01A926
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-0552
S-06168
S-092190
SW-CB23130
SW-CBT154
SW-REF1100
NOTES:MANGANESE CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARDIS 50 ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-63GROUNDWATER CONCENTRATIONTREND ANALYSIS -MANGANESE IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")S-03873
S-042860
S-022170
S-013150
S-082260
SW-CB1819
S-02B2840
S-10NA
S-01A1240
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-0513.1
S-06<1
S-09<1
SW-CB2<1
SW-CBT1<1
SW-REF1<1
NOTES:MOLYBDENUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARDIS NOT ESTABLISHED.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-64GROUNDWATER CONCENTRATIONTREND ANALYSIS -MOLYBDENUM IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-08<1
S-04<1
S-03<1
S-02<1
S-01<1
S-02B<1
SW-CB1<1
S-10NA
S-01A<1
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-05NA
S-06NA
S-09NA
SW-CB2320
SW-CBT1116
SW-REF153
NOTES:STRONTIUM CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD ISNOT ESTABLISHED.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-65GROUNDWATER CONCENTRATIONTREND ANALYSIS -STRONTIUM IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
SW-CB1369
S-10NA
S-08NA
S-04NA
S-03NA
S-02NA
S-01NA
S-02BNA
S-01ANA
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-0547
S-066
S-099
SW-CB224
SW-CBT16.8
SW-REF14.4
NOTES:SULFATE CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS250 mg/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-66GROUNDWATER CONCENTRATIONTREND ANALYSIS -SULFATE IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-0862
S-0438
S-0330
S-0242
S-0145
S-02B27
SW-CB129
S-1032
S-01A10
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-05230
SW-CBT1370
S-06100
S-09210
SW-CB2210
SW-REF1120
NOTES:TOTAL DISSOLVED SOLIDS (TDS) CONCENTRATION IS MEASURED IN ug/L AND THENCAC 02L STANDARD IS 500 mg/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-67GROUNDWATER CONCENTRATIONTREND ANALYSIS -TOTAL DISSOLVED SOLIDS IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-08280
S-03210
S-01250 SW-CB1230
S-04210
S-02220 S-02B220
S-10100
S-01A110
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-05NA
S-06NA
S-09NA
SW-CB20.54
SW-CBT10.349
SW-REF11.43
NOTES:VANADIUM CONCENTRATION IS MEASURED IN ug/L AND THE IMAC STANDARD IS 0.3ug/L.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-68GROUNDWATER CONCENTRATIONTREND ANALYSIS -VANADIUM IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
SW-CB10.482
S-10NA
S-08NA
S-04NA
S-03NA
S-02NA
S-01NA
S-02BNA
S-01ANA
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<
!(!(
!(!(
!(
!(
!(
!(
!(
!(
!(
")
")
")
")
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATIONRAILROAD R.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROADOLD US HWY 501MULLINS LNNEW MAYO DR
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1981 C&DLANDFILLASH BASIN
S-058.7 S
SW-CB27.3
S-067.3
S-096.1
SW-CBT17.1
SW-REF16.9
NOTES:pH CONCENTRATION IS MEASURED IN ug/L AND THE NCAC 02L STANDARD IS A RANGEOF 6.5 - 8.5 S.U.
ND = NON-DETECT
THE DETERMINATION OF CONCENTRATION TRENDS OVER TIME ARE GENERALIZEDBASED ON AVAILABLE DATA AND WERE NOT STATISTICALLY DETERMINED.
DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICALDATA TABLE NOTES FOR QUALIFIER DEFINITIONS.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).FIGURE 14-69GROUNDWATER CONCENTRATIONTREND ANALYSIS -pH IN SURFACE WATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: A. FEIGLPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 10/25/2017
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Groundwater Concentration Trend Analysis_SW.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
")SURFACE WATER SAMPLE LOCATION
!(AOW SAMPLE LOCATION
WATER SUPPLY WELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
<<<<<<<<<<!(
!(
!(!(
!(
!(
!(
!(
")
S-087.0
S-026.2
S-016.4
S-02B6.5
SW-CB16.7
S-046.5
S-036.8 S-10NM
S-01A7.1
ASH BASIN
MAYO LAKE RD
INSETSCALE: 1" = 300'
SEE INSET
DECREASING CONCENTRATION OVER TIME1
INCREASING CONCENTRATION OVER TIME1
STABLE CONCENTRATION OVER TIME1
UNKNOWN CONCENTRATION OVER TIME1
RAILROAD
RAI
LROAD
RAI
LROADHAUL RDMW-12S (40-50): pH=6.2, Eh=163, k=2.21E-02,As=1.11, Ba=13, B=<50, Cr=1.06, Cr (VI)=4.4,Co=1.59, Fe=6820, Mn=395, Mo=1.97,Sr=27, SO4=0.95, TDS=51, V=2.8MW-13BR (89-99): pH=7.1, Eh=148, k=1.62E+00,As=<1, Ba=32, B=<50, Cr=1.54, Cr (VI)=<0.12 D3,Co=3.08, Fe=3260, Mn=383, Mo=2.2,Sr=360, SO4=15, TDS=340, V=<0.3ABMW-1 (3-13): pH=7.7, Eh=36, k=4.12E+00,As=323, Ba=520, B=5820, Cr=<1, Cr (VI)=0.83,Co=3.87, Fe=1450, Mn=982, Mo=304,Sr=1890, SO4=21, TDS=370, V=56.7ABMW-2BRL (155-165): pH=7.8, Eh=121, k=1.19E-02,As=1.88, Ba=72, B=<50, Cr=<1, Cr (VI)=0.91,Co=<1, Fe=1840, Mn=341, Mo=2,Sr=2320, SO4=0.28, TDS=310, V=<0.3BG-2 (25-45): pH=6.5, Eh=168, k=NM,As=<1, Ba=45, B=<50, Cr=<5, Cr (VI)=NA,Co=<1, Fe=221, Mn=105, Mo=<1,Sr=296, SO4=5.6, TDS=320, V=3.87MW-18BR (96-111): pH=7.1, Eh=206, k=1.44E-02,As=<1, Ba=96, B=<50, Cr=<1, Cr (VI)=<0.025,Co=<1, Fe=241, Mn=1360, Mo=1.85,Sr=477, SO4=13, TDS=440, V=<0.3MW-18D (39-49): pH=6.4, Eh=257, k=1.59E-01,As=<1, Ba=<5, B=<50, Cr=<1, Cr (VI)=0.054,Co=<1, Fe=<10, Mn=<5, Mo=<1,Sr=159, SO4=37, TDS=280, V=1.3MW-12D (87-97): pH=5.9, Eh=367, k=3.02E+00,As=<1, Ba=15, B=<50, Cr=1.25, Cr (VI)=0.63,Co=<1, Fe=242, Mn=45, Mo=<1,Sr=85, S=1.1, TDS=96, V=0.805MW-10BR (48-58): pH=6.2, Eh=266, k=8.84E-03,As=<1, Ba=<5, B=<50, Cr=<1, Cr (VI)=0.074,Co=<1, Fe=<10, Mn=54, Mo=<1,Sr=201, SO4=87, TDS=310, V=2.11MW-8BR (62-67): pH=6.4, Eh=263, k=8.50E-02,As=<1, Ba=22, B=<50, Cr=2.34, Cr (VI)=<0.12,Co=<1, Fe=587, Mn=278, Mo=2.46,Sr=342, SO4=37, TDS=490, V=1.22MW-7D (20-30): pH=6.4, Eh=286,k=1.92E-02, As=<1, Ba=18, B=<50,Cr=<1,Cr (VI)=<0.025, Co=<1, Fe=353,Mn=77, Mo=<1,Sr=447, SO4=10, TDS=370, V=0.734MW-3BR (69-74): pH=7.0, Eh=107, k=6.35E-02,As=<1, Ba=38, B=<50, Cr=<1, Cr (VI)=<0.025,Co=<1, Fe=313, Mn=550, Mo=<1,Sr=402, SO4=11, TDS=700, V=<0.3CW-6 (72-77): pH=6.5, Eh=215, k=NM,As=<1, Ba=43, B=<50, Cr=<5, Cr (VI)=NA,Co=<1, Fe=2440, Mn=1590, Mo=3.9,Sr=334, SO4=38, TDS=530, V=<0.3CW-5 (36-41): pH=6.7, Eh=196, k=NM,As=<1, Ba=46, B=<50, Cr=<5, Cr (VI)=NA,Co=<1, Fe=390, Mn=431, Mo=<1,Sr=165, SO4=6.4, TDS=260, V=<0.3CW-3 (17-32): pH=6.5, Eh=195, k=NM,As=<1, Ba=17, B=<50, Cr=8, Cr (VI)=NA,Co=<1, Fe=176, Mn=25, Mo=<1,Sr=322, SO4=17, TDS=360, V=1.77CW-4 (35-40): pH=6.1, Eh=203, k=NM,As=<1, Ba=27, B=<50, Cr=<5, Cr (VI)=NA,Co=<1, Fe=125, Mn=<5, Mo=<1,Sr=127, SO4=25, TDS=140, V=1.31CW-2 (8-18): pH=5.2, Eh=331, k=NM,As=<1, Ba=123, B=796, Cr=<5, Cr (VI)=NA,Co=<1, Fe=11, Mn=119, Mo=<1,Sr=227, SO4=39, TDS=160, V=<0.3CW-2D (45-55): pH=6.7, Eh=275, k=NM,As=<1, Ba=32, B=303, Cr=<5, Cr (VI)=NA,Co=<1, Fe=240, Mn=709, Mo=1.03,Sr=452, SO4=62, TDS=340, V=0.812BG-1 (42-52): pH=5.6, Eh=204, k=NM,As=<1, Ba=90, B=<50, Cr=<5, Cr (VI)=NA,Co=<1, Fe=40, Mn=6, Mo=<1,Sr=176, SO4=0.27, TDS=120, V=3.89ABMW-04D (56-61): pH=6.3, Eh=134, k=5.88E-02,As=26.9, Ba=890, B=3470, Cr=1.3, Cr (VI)=<0.5 D3,Co=5.9, Fe=58800, Mn=6960, Mo=8.1,Sr=1740, SO4=0.78, TDS=600, V=10.4ABMW-4 (48-53): pH=7.4, Eh=54, k=5.34E-01,As=547, Ba=592, B=6520, Cr=<1, Cr (VI)=<0.12 D3,M1,Co=2.5, Fe=7170, Mn=2620, Mo=471,Sr=3160, SO4=56, TDS=560, V=3.66ABMW-4BR (98-108): pH=7.8, Eh=78, k=9.46E-03,As=1.26, Ba=113, B=<50, Cr=<1, Cr (VI)=<0.12 D3,Co=<1, Fe=438, Mn=363, Mo=8.57,Sr=1940, SO4=30, TDS=330, V=0.308ABMW-3S (50-60): pH=4.9, Eh=429, k=4.55E-01,As=<1, Ba=22, B=1330, Cr=<1, Cr (VI)=<0.12 D3,Co=2.04, Fe=1520, Mn=364, Mo=<1,Sr=75, SO4=0.49, TDS=96, V=<0.3ABMW-3 (35-40): pH=6.9, Eh=114, k=1.18E-01,As=191, Ba=258, B=2000, Cr=<1, Cr (VI)=<0.5 D3,M6,Co=<1, Fe=15800, Mn=836, Mo=39.8,Sr=1650, S04=33, TDS=350, V=0.475ABMW-2 (34-39): pH=9.6, Eh=232, k=4.79E-02,As=957 M4, Ba=113, B=8800, Cr=<1, Cr (VI)=0.084,Co=<1, Fe=95, Mn=452, Mo=1560 M4,Sr=1380, SO4=36, TDS=440, V=0.8710/27/2017 1:41 PMP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP BASE MAP.dwgDATE PRINTED:FILE PATH:FIGURE 14-70COMPREHENSIVEGROUNDWATER DATAMAYO STEAM ELECTRIC PLANT10660 BOSTON RDROXBORO, NORTH CAROLINADUKEENERGYPROGRESSFIG 14-70 (GW MAP)KYLE DONOVANJOHN CHASTAINPROJECT MANAGER:LAYOUT NAME:DRAWN BY:CHECKED BY:JERRY WYLIEDATE:DATE:www.synterracorp.com148 River Street, Suite 220Greenville, South Carolina 29601864-421-9999GRAPHIC SCALE600300150030010/17/201710/17/2017MW-3BRS-3S-10S-8MW-6BRS-1AS-2S-2BS-2AMW-8SMW-8DMW-9BRLMW-9BRMW-19BRMW-19DS-4S-1S-5STORM WATEROUTFALL 004STORM WATEROUTFALL 005SW-CBT1SW-CB1SW-CB2SB-4SB-3SB-2SB-6SB-5AB-1P2AP1AP1P2P3P4P3AP4ASB-1CRUTCHFIELD BRANCHUNNAMED BRANCHBOX CULVERTCULVERT48" CMPVIRGINIANORTH CAROLINAVIRGINIANORTH CAROLINAGRATEGRATE24" RCPFORMER INTERMITTENT STREAM BASEDON 1968 USGS TOPOGRAPHIC MAPSOU
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)FORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHFORMER INTERMITTENTSTREAM BASED ON 1968USGS TOPOGRAPHIC MAPFORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHSW-REF1S-7S-6S-9FORMER SLUICE POINTSMAYO LAKEWL ± 433'1981 C&D LANDFILLFGD SETTLING PONDFGD FORWARDFLUSH PONDMW-15BRDEP-2DEP-3DEP-1MW-11BRBGSB-3BGSB-5BGSB-9BGSB-2BGSB-8BGSB-1BGSB-4FORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHNPDES OUTFALL 002MW-17BRSTORM WATEROUTFALL 006ASTORM WATEROUTFALL 006BSTORM WATEROUTFALL 006ESTORM WATEROUTFALL 006DSTORM WATEROUTFALL 006CCULVERTCULVERTHEADWALL-48" RCP48" RCP APPROXIMATENPDES OUTFALL 002CMF #1CMF #2DIDICOAL PILEPOWER PLANTRAW WATER INTAKE15"18"RT HESTER RDHAUL RDHAUL RDHAUL RDMAYO LAKE RDMAYO LAKE RDRAILROAD
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E RAILROAD LINECRUTCHFIELD BRANCHBEAVER PONDCW-1 (15-25): pH=5.9, Eh=210, k=NM,As=<1, Ba=<5, B=<50, Cr=<5, Cr (VI)=NA,Co=<1, Fe=147, Mn=12, Mo=<1,Sr=71, SO4=9.6, TDS=130, V=0.805CW-1D (30-40): pH=7.0, Eh=206, k=NM,As=<1, Ba=<5, B=<50, Cr=<5, Cr (VI)=NA,Co=<1, Fe=69, Mn=34, Mo=23,Sr=180, SO4=3.5, TDS=190, V=1.33MW-2 (38-48): pH=5.7, Eh=186, k=NM,As=<1, Ba=51, B=<50, Cr=<1, Cr (VI)=0.08,Co=1.88, Fe=574, Mn=564, Mo=1.63,Sr=184, SO4=18, TDS=210, V=0.684MW-3 (8-18): pH=5.9, Eh=238, k=NM,As=<1, Ba=56, B=982, Cr=<1, Cr (VI)=0.19,Co=<1, Fe=<10, Mn=1280, Mo=<1,Sr=334, SO4=22, TDS=200, V=<0.3MW-4 (35-55): pH=6.9, Eh=349, k=NM,As=<1, Ba=8, B=<50, Cr=<1, Cr (VI)=0.06,Co=<1, Fe=182, Mn=178, Mo=2.7,Sr=112, SO4=39, TDS=210, V=1.03MW-5BR (58-63): pH=7.1, Eh=97, k=1.26E-01,As=1.06, Ba=37, B=<50, Cr=<1, Cr (VI)=<0.25 D3,Co=<1, Fe=7100, Mn=1830, Mo=1.02,Sr=231, SO4=1.4, TDS=440, V=<0.3MW-7BR (67-77): pH=7.6, Eh=-38, k=1.73E+00,As=<1, Ba=157, B=<50, Cr=<1, Cr (VI)=<0.025,Co=<1, Fe=369, Mn=198, Mo=2.39,Sr=1040, SO4=2.8, TDS=270, V=<0.3MW-14BR (29-34): pH=6.6, Eh=205, k=3.59E-02,As=<1, Ba=15, B=<50, Cr=<1, Cr (VI)=0.048,Co=<1, Fe=52, Mn=130, Mo=4.34,Sr=143, SO4=8.9, TDS=210, V=2.45MW-16D (29-39): pH=6.9, Eh=216, k=1.33E+00,As=<1, Ba=6, B=<50, Cr=<1, Cr (VI)=0.67,Co=<1, Fe=316, Mn=124, Mo=5.98,Sr=176, SO4=7.6, TDS=160, V=0.795MW-16S (5-7.5): pH=6.7, Eh=210, k=1.73E-02,As=<1, Ba=70, B=179, Cr=2.66, Cr (VI)=0.028,Co=<1, Fe=94, Mn=129, Mo=<1,Sr=178, SO4=10, TDS=140, V=<0.3MW-16BR (49-59): pH=7.9, Eh=96, k=3.17E-03,As=<1, Ba=12, B=<50, Cr=<1, Cr (VI)=<0.12D3, Co=<1, Fe=505, Mn=158, Mo=49.2,Sr=109, SO4=0.62, TDS=200, V=<0.3SB-7AB-4AB-2AB-3SOURCE NOTES:NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDSTO LOCATE THE STREAMS AND WETLANDS IN THE FIELD. THE HORIZONTAL LOCATION AND THE VERTICALLOCATIONS HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.LEGENDCULVERT LOCATION500 ft COMPLIANCE BOUNDARYPARCEL LINE DUKE ENERGY (APPROXIMATE)ASH BASIN WASTE BOUNDARYSURFACE WATER FLOW DIRECTIONAPPROXIMATE STREAM (NON-JD)APPROXIMATE POND OR RESERVOIR (NON-JD)APPROXIMATE EFFLUENT CHANNELAPPROXIMATE ASH BASIN PONDED WATERASH BASINPRIMARY AND SECONDARYSETTLING PONDSFOREBAYWETLAND BY AMEC FOSTER WHEELERDATA NOTES:DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES FORQUALIFIER DEFINITIONS.DATA SHOWN ON MAP IS THE MOST RECENT DATA AVAILABLE THROUGH Q2 2017.NA=NOT ANALYZEDNM=NOT MEASUREDDATA IS EXCLUDED FOR THE WELLS WITH A MEASURED TURBIDITY GREATER THAN 10 NTU's AND /ORHIGH pH VALUES THAT MAY INDICATE POSSIBLE GROUT INTRUSION INTO THE WELL SCREEN.ABMW-2BR (94-104): pH=7.8, Eh=100, k=8.75E-01,As=3.06, Ba=115, B=<50, Cr=<1, Cr (VI)=0.7,Co=<1, Fe=1230, Mn=242, Mo=10.9,Sr=1110, SO4=8.2, TDS=360, V=<0.3MY-1001 (NA): pH=6.3, Eh=NM, k=NM,As=<0.1, Ba=8.9, B=<25, Cr=1.5, Cr (VI)=1.2,Co=<0.1, Fe=163, Mn=4.9, Mo=<0.5,Sr=91.9, SO4=<2, TDS=93, V=2.2MY-1003 (NA): pH=6.4, Eh=261, k=NM,As=0.23, Ba=20.3, B=<25, Cr=<0.5, Cr (VI)=<0.025,Co=0.22, Fe=504, Mn=586, Mo=<0.5,Sr=107, SO4=15.6, TDS=237, V=0.42MY-1002 (NA): pH=6.0, Eh=NM, k=NM,As=<0.1, Ba=<0.3, B=<25, Cr=1.5, Cr (VI)=2,Co=<0.1, Fe=81.3, Mn=<0.5, Mo=<0.5,Sr=<0.5, SO4=2.1, TDS=47, V=<0.3MY-5 (Vendor) (NA): pH=7.1, Eh=NM, k=NM,As=<5, Ba=54.5, B=<50, Cr=<5, Cr (VI)=<0.03,Co=<5, Fe=953, Mn=517, Mo=<5,Sr=621, SO4=5.7, TDS=349, V=<10MY-3 (Vendor) (NA): pH=5.6, Eh=NM, k=NM,As=<0.5, Ba=60.4, B=<5, Cr=0.6, Cr (VI)=0.13,Co=<0.5, Fe=<50, Mn=8, Mo=<0.5,Sr=391, SO4=55.6, TDS=226, V=<1MW-3MW-12SWELL IN TRANSITION ZONEWELL IN SAPROLITE MATERIALWELL IN ALLUVIUM MATERIALMW-14BRWELL IN COMPETENT BEDROCKABMW-1WELL IN ASH PORE WATERPIEZOMETER IN BEDROCKDEP-1MW-3WATER SUPPLY WELL SAMPLED BY NC DEQSW-CB1SURFACE WATER SAMPLE LOCATIONMY-03SOIL BORING LOCATIONSB-3PIEZOMETER IN EARTH DAM (FILL)P1AS-16AOW SAMPLE LOCATIONTHE TOPOGRAPHY IS A COMPILATION OF LIDAR DATA OBTAINED FROM FRIS- NORTH CAROLINA FLOOD RISKINFORMATION SYSTEM AT ftp://ftp1.ncem.org/Data_Requests/County_LIDAR_Data/Personcounty/ AND ANAERIAL TOPOGRAPHIC SURVEY-MAYO PLANT BY WSP, DATER JULY 24, 2015, JOB NUMBER: 1570002.00, DWGNAME: MAYO OVERALL WK.DWGWETLAND AND STREAM BOUNDARIES PROVIDED BY AMECFOSTER WHEELER. NOTE THESE DO NOT APPEAR TO TO BEINCLUSIVE OF ALL THE BOUNDARIES AS SHOWN IN THE AMECFOSTER WHEELER NRTR MAYO REPORT.ABMW-4BR (98-108): pH=7.8, Eh=78, k=9.46E-03,As=1.26, Ba=113, B=<50, Cr=<1, Cr (VI)=<0.12 D3,Co=<1, Fe=438, Mn=363, Mo=8.57,Sr=1940, SO4=30, TDS=330, V=0.308Well ID (SCREENED INTERVAL IN ft. bgs): pH (S.U.), Eh (mV), k= hydraulic conductivity (ft/day)As=Arsenic (ug/L): Ba=Barium (ug/L): B= Boron (ug/L): Cr (VI)=Hexavalent Chromium (ug/L): Cr=Total Chromium (ug/L): Co=Cobalt (ug/L): Fe=Iron (ug/L):Mn=Manganese (ug/L): Mo=Molybdenum (ug/L): Sr=Strontium (ug/L): SO4=Sulfate (mg/L): TDS=Total Dissolved Solids (mg/L): V=Vanadium (ug/L)WELL KEY100' RIGHT OF WAY
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RAILROADHAUL RDS-6: pH=7.3, Eh=325,As=<1, Ba=24, B=<50,Cr=<1, Cr (VI)=NA, Co=NA, Fe=412 B2, Mn=168, Mo=<1,Sr=NA, SO4=6, TDS=100, V=NASW-REF1: pH=6.9, Eh=265,As=<1, Ba=25, B=<50,Cr=<1, Cr (VI)=<0.12 D3, Co=<1, Fe=1620, Mn=100, Mo=<1,Sr=53, SO4=4.4, TDS=120, V=1.4310/27/2017 1:46 PMP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP BASE MAP.dwgDATE PRINTED:FILE PATH:FIGURE 14-71COMPREHENSIVE SURFACEWATER AND AREA OFWETNESS DATAMAYO STEAM ELECTRIC PLANT10660 BOSTON RDROXBORO, NORTH CAROLINADUKEENERGYPROGRESSFIG 14-71(WATER AND AOW)KYLE DONOVANJOHN CHASTAIN/ C. NEWELLPROJECT MANAGER:LAYOUT NAME:DRAWN BY:CHECKED BY:JERRY WYLIEDATE:DATE:www.synterracorp.com148 River Street, Suite 220Greenville, South Carolina 29601864-421-9999GRAPHIC SCALE600300150030010/17/201710/17/2017BG-2CW-5MW-5BRMW-14BRBG-1MW-13BRCW-4MW-2CW-3MW-3BRMW-16BRMW-16DMW-16SCW-2CW-2DCW-6MW-6BRMW-4MW-3MW-8BRMW-8SMW-8DMW-9BRLMW-9BRCW-1DCW-1MW-18DMW-18BRMW-19BRMW-19DABMW-3SABMW-3ABMW-1ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4SABMW-4SB-4SB-3SB-2SB-6SB-5AB-1P2AP1AP1P2P3P4P3AP4ASB-1MY-05MY-03CRUTCHFIELD BRANCHUNNAMED BRANCHBOX CULVERTCULVERT48" CMPVIRGINIANORTH CAROLINAVIRGINIANORTH CAROLINAGRATEGRATE24" RCPSOU
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)FORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHFORMER INTERMITTENTSTREAM BASED ON 1968USGS TOPOGRAPHIC MAPFORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHMW-12SMW-12DS-7FORMER SLUICE POINTSMW-10BRMAYO LAKEWL ± 433'ASH BASIN1981 C&D LANDFILLMW-7BRMW-7DFGD SETTLING PONDFGD FORWARDFLUSH PONDMW-15BRDEP-2DEP-3DEP-1MW-11BRBGSB-3BGSB-5BGSB-9BGSB-2BGSB-8BGSB-1BGSB-4MY-1002MY-1001MY-1003FORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHMW-17BRSTORM WATEROUTFALL 006ASTORM WATEROUTFALL 006BSTORM WATEROUTFALL 006ESTORM WATEROUTFALL 006DSTORM WATEROUTFALL 006CCULVERTCULVERTHEADWALL-48" RCP48" RCP APPROXIMATENPDES OUTFALL 002CMF #1CMF #2DIDICOAL PILEPOWER PLANTRAW WATER INTAKE15"18"RT HESTER RDHAUL RDHAUL RDHAUL RDMAYO LAKE RDMAYO LAKE RDRAILROAD
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E RAILROAD LINECRUTCHFIELD BRANCHBEAVER PONDSW-CB2: pH=7.3, Eh=264,As=<1, Ba=90, B=973, Cr=<1, Cr (VI)=<0.12 D3,Co=1.48, Fe=2140, Mn=3130, Mo=<1,Sr=320, SO4=24, TDS=210, V=0.54SW-CB1: pH=6.7, Eh=276,As=<1, Ba=51, B=1250, Cr=<1, Cr (VI)=<0.12 D3,Co=<1, Fe=597, Mn=819, Mo=<1,Sr=369, SO4=29, TDS=230, V=0.482SW-CBT1: pH=7.1, Eh=264,As=<1, Ba=31, B=<50, Cr=<1, Cr (VI)=0.037,Co=<1, Fe=49, Mn=54, Mo=<1,Sr=116, SO4=6.8, TDS=370, V=0.349S-9: pH=7, Eh=246.3,Sb=<1, As=<1, Ba=50, Be=NA, B=1180, Cd=<1, Cl=9.6,Cr (VI)=NA, Cr=<1, Co=NA, Fe=511, Mn=221, Mo=<1, Se=2.18,Sr=NA, S=230, Tl=<0.2, TDS=360, V=NAS-8: pH=7.0, Eh=382,As=<1, Ba=81, B=1830, Cr=<1, Cr (VI)=NA,Co=NA, Fe=1190, Mn=2260, Mo=<1, Sr=NA, SO4=62, TDS=280, V=NAS-10: pH=5.3, Eh=457,As=<1, Ba=114, B=729, Cr=<1, Cr (VI)=NA,Co=NA, Fe=68, Mn=918, Mo=<1, Sr=NA, SO4=NA, TDS=NA, V=NAS-1A: pH=7.1, Eh=285,As=<1, Ba=25, B=213, Cr=<1, Cr (VI)=NA,Co=NA, Fe=926, Mn=1240, Mo=<1, Sr=NA, SO4=10, TDS=110, V=NAS-1: pH=6.4, Eh=199,As=2.24, Ba=139, B=1850, Cr=<1, Cr (VI)=NA,Co=NA, Fe=14700 B2, Mn=3150, Mo=<1, Sr=NA, SO4=45, TDS=250, V=NAS-5: pH=8.7 S, Eh=346,As=3.05, Ba=35, B=1100, Cr=<1, Cr (VI)=NA,Co=NA, Fe=38, Mn=52, Mo=13.1, Sr=NA, SO4=47, TDS=230, V=NAS-3: pH=6.8, Eh=293,As=<1, Ba=45, B=1170, Cr=<1, Cr (VI)=NA,Co=NA, Fe=174 B2, Mn=873, Mo=<1, Sr=NA, SO4=30, TDS=210, V=NAS-2: pH=6.2, Eh=267,As=<1, Ba=122, B=1580, Cr=<1, Cr (VI)=NA,Co=NA, Fe=4320 B2, Mn=2170, Mo=<1, Sr=NA, SO4=42, TDS=220, V=NAS-2B: pH=6.5, Eh=308,As=<1, Ba=32, B=1660, Cr=<1, Cr (VI)=NA,Co=NA, Fe=74 B2, Mn=2840, Mo=<1, Sr=NA, SO4=27, TDS=220, V=NAS-4: pH=6.5, Eh=223,As=2.66, Ba=136, B=1270, Cr=<1, Cr (VI)=NA,Co=NA, Fe=14200, Mn=2860, Mo=<1, Sr=NA, SO4=38, TDS=210, V=NASB-7OUTFALL 002OUTFALL 004OUTFALL 005AB-4AB-2AB-3SOURCE NOTES:NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDSTO LOCATE THE STREAMS AND WETLANDS IN THE FIELD. THE HORIZONTAL LOCATION AND THE VERTICALLOCATIONS HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.LEGENDCULVERT LOCATION500 ft COMPLIANCE BOUNDARYPARCEL LINE DUKE ENERGY (APPROXIMATE)ASH BASIN WASTE BOUNDARYSURFACE WATER FLOW DIRECTIONAPPROXIMATE STREAM (NON-JD)APPROXIMATE POND OR RESERVOIR (NON-JD)APPROXIMATE EFFLUENT CHANNELAPPROXIMATE ASH BASIN PONDED WATERWETLAND BY AMEC FOSTER WHEELERDATA NOTES:DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES FORQUALIFIER DEFINITIONS.DATA SHOWN ON MAP IS THE MOST RECENT DATA AVAILABLE THROUGH Q2 2017.NA=NOT ANALYZEDNM=NOT MEASUREDFOREBAYS-2APRIMARY AND SECONDARYSETTLING PONDSMW-3MW-12SWELL IN TRANSITION ZONEWELL IN SAPROLITE MATERIALWELL IN ALLUVIUM MATERIALMW-14BRWELL IN COMPETENT BEDROCKABMW-1WELL IN ASH PORE WATERPIEZOMETER IN BEDROCKDEP-1MW-3WATER SUPPLY WELL SAMPLED BY NC DEQSW-CB1SURFACE WATER SAMPLE LOCATIONMY-03SOIL BORING LOCATIONSB-3PIEZOMETER IN EARTH DAM (FILL)P1AS-16AOW SAMPLE LOCATIONWETLAND AND STREAM BOUNDARIES PROVIDED BY AMECFOSTER WHEELER. NOTE THESE DO NOT APPEAR TO TO BEINCLUSIVE OF ALL THE BOUNDARIES AS SHOWN IN THE AMECFOSTER WHEELER NRTR MAYO REPORT.THE TOPOGRAPHY IS A COMPILATION OF LIDAR DATA OBTAINED FROM FRIS- NORTH CAROLINA FLOOD RISKINFORMATION SYSTEM AT ftp://ftp1.ncem.org/Data_Requests/County_LIDAR_Data/Personcounty/ AND ANAERIAL TOPOGRAPHIC SURVEY-MAYO PLANT BY WSP, DATER JULY 24, 2015, JOB NUMBER: 1570002.00, DWGNAME: MAYO OVERALL WK.DWGSample ID: pH (S.U.), Eh (mV),As=Arsenic (ug/L): Ba=Barium (ug/L): B= Boron (ug/L): Cr (VI)=Hexavalent Chromium (ug/L): Cr=Total Chromium (ug/L): Co=Cobalt (ug/L): Fe=Iron (ug/L):Mn=Manganese (ug/L): Mo=Molybdenum (ug/L): Sr=Strontium (ug/L): SO4=Sulfate (mg/L): Tl=Thallium (ug/L): TDS=Total Dissolved Solids (mg/L):V=Vanadium (ug/L)SAMPLE KEY100' RIGHT OF WAY
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LROADHAUL RDAB-410/27/2017 1:55 PMP:\Duke Energy Progress.1026\105. Mayo Ash Basin GW Assessment Plan\CSA_UPDATE_2017\DWG\DE MAYO CSAUP BASE MAP.dwgDATE PRINTED:FILE PATH:FIGURE 14-72COMPREHENSIVE SOIL ANDSEDIMENT DATAMAYO STEAM ELECTRIC PLANT10660 BOSTON RDROXBORO, NORTH CAROLINADUKEENERGYPROGRESSFIG 14-72 (SOIL-SED)KYLE DONOVANJOHN CHASTAIN/ C.NEWELLPROJECT MANAGER:LAYOUT NAME:DRAWN BY:CHECKED BY:JERRY WYLIEDATE:DATE:www.synterracorp.com148 River Street, Suite 220Greenville, South Carolina 29601864-421-9999GRAPHIC SCALE600300150030010/17/201710/17/2017BG-2CW-5MW-5BRMW-14BRBG-1MW-13BRCW-4MW-2CW-3MW-3BRMW-16BRMW-16DMW-16SCW-2CW-2DS-3S-10S-8CW-6MW-6BRMW-4S-1AS-2S-2BS-2AMW-3MW-8BRMW-8SMW-8DMW-9BRLMW-9BRCW-1DCW-1MW-18DMW-18BRMW-19BRMW-19DS-4S-1S-5ABMW-3SABMW-3ABMW-1ABMW-2BRLABMW-2BRABMW-2ABMW-4DABMW-4SABMW-4SB-4SB-3SB-2SB-6SB-5AB-1P2AP1AP1P2P3P4P3AP4ASB-1MY-05MY-03CRUTCHFIELD BRANCHUNNAMED BRANCHBOX CULVERTCULVERT48" CMPVIRGINIANORTH CAROLINAVIRGINIANORTH CAROLINAGRATEGRATE24" RCPSOU
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)FORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHFORMER INTERMITTENTSTREAM BASED ON 1968USGS TOPOGRAPHIC MAPFORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHMW-12SMW-12DS-7S-6S-9FORMER SLUICE POINTSMW-10BRMAYO LAKEWL ± 433'ASH BASIN1981 C&D LANDFILLMW-7BRMW-7DFGD SETTLING PONDFGD FORWARDFLUSH PONDMW-15BRDEP-2DEP-3DEP-1MW-11BRBGSB-3BGSB-5BGSB-9BGSB-2BGSB-8BGSB-1BGSB-4MY-1002MY-1001MY-1003MW-17BRSTORM WATEROUTFALL 006ASTORM WATEROUTFALL 006BSTORM WATEROUTFALL 006ESTORM WATEROUTFALL 006DSTORM WATEROUTFALL 006CCULVERTCULVERTHEADWALL-48" RCP48" RCP APPROXIMATENPDES OUTFALL 002CMF #1CMF #2DIDICOAL PILEPOWER PLANTRAW WATER INTAKE15"18"RT HESTER RDHAUL RDHAUL RDHAUL RDMAYO LAKE RDMAYO LAKE RDRAILROAD
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E RAILROAD LINECRUTCHFIELD BRANCHBEAVER PONDSB-7FORMER SOUTH BOSTON HWY BASEDON 1951 AERIAL PHOTOGRAPHOUTFALL 002OUTFALL 004OUTFALL 005AB-1 (4-5): Ash Pore: pH=6.2,As=<3.1, Ba=38.6, B=<3.1,Cr=2.2, Co=<3.1, Fe=1100, Mn=17.7, Mo=0.42 j,Sr=11, SO4=<311, V=2.7 jAB-1 (34.3-35): Ash Pore: pH=7.2,As=2.9 j, Ba=34.6, B=9.2,Cr=10.6, Co=4.2, Fe=2230, Mn=9.4, Mo=0.55 j,Sr=19.5, SO4=<379, V=19AB-1 (48-50): Ash Pore: pH=7.3,As=2.6 j, Ba=34.7, B=5.9,Cr=8, Co=3.4 j, Fe=1820, Mn=9.4, Mo=0.63 j,Sr=17.9, SO4=<352, V=13.7SW-CB1SW-CBT1SW-REF1ABMW-2BR (45-45.5): Surficial: pH=7.8,As=<6, Ba=92.2, B=<15,Cr=8, Co=6 j, Fe=18300, Mn=579, Mo=<3,Sr=23.2, SO4=<289, V=30.3ABMW-2BR (57.5-58): Surficial: pH=7.4,As=<5.1, Ba=41.2, B=<12.8,Cr=56.7, Co=37.4, Fe=43400, Mn=782, Mo=<2.6,Sr=49.4, SO4=<263, V=84.9:KD= As=169, B=1, Cr=39, Co=1141, Tl=1653, V=54ABMW-2BR (97-100): Bedrock:KD=As=6.5, B=0, Cr=IDNA, Co=1732, Tl=539, V=38AB-2AB-3AB-3 (4-5): Ash Pore: pH=6.4,As=<3.3, Ba=38.7, B=2.6 j,Cr=2, Co=<3.3, Fe=1010, Mn=11.9, Mo=0.38 j,Sr=8, SO4=<322, V=2.9 jAB-3 (21.6-23.4): Ash Pore: pH=6.4,As=3.3 j, Ba=41.1, B=7.3,Cr=13.3, Co=4, Fe=2470, Mn=14.1, Mo=0.59 j,Sr=20.6, SO4=326 j, V=15AB-3 (41.7-42.5): Surficial: pH=6.4,As=11.2, Ba=83.2, B=32.9,Cr=54.7, Co=17.7, Fe=3020, Mn=69.4, Mo=1.4,Sr=83.7, SO4=<332, V=88.1AB-4 (4-5): Ash Pore: pH=6.6,As=<3.5, Ba=16.9, B=<3.5,Cr=1.9, Co=<3.5, Fe=554, Mn=37.7, Mo=0.38 j,Sr=4.7, SO4=<344, V=<3.5AB-4 (33-35): Ash Pore: pH=8,As=13.4, Ba=80.9, B=31.3,Cr=31.9, Co=13.6, Fe=3290, Mn=21.1, Mo=1.6,Sr=53, SO4=<350, V=63.6AB-4 (53-55): Ash Pore: pH=7.8,As=10, Ba=67.3, B=25.5,Cr=24.5, Co=12.9, Fe=2860, Mn=13.6, Mo=1.2,Sr=60.6, SO4=<418, V=64.7ABMW-1 (1-1.5): Ash Pore: pH=10.4,As=16.6, Ba=150, B=27.4,Cr=25, Co=7.6 j, Fe=2240, Mn=18.4, Mo=<4.3,Sr=71.8, SO4=<425, V=39.3ABMW-1 (3.5-5): Ash Pore: HFO=741.1ABMW-1 (11.5-12): Ash Pore: pH=8.2,As=26.2, Ba=152, B=27.4,Cr=26.9, Co=8.3, Fe=2710, Mn=31.3, Mo=<3.9,Sr=111, SO4=<381, V=46.2ABMW-1 (13-13.5): Surficial: pH=4.9,As=<6.2, Ba=53.8, B=<15.5,Cr=3.7, Co=<6.2, Fe=8770, Mn=92.2, Mo=<3.1,Sr=10.8, SO4=<316, V=11.9AB-2 (4-5): Ash Pore: pH=6.3,As=<4.4, Ba=9.9, B=<4.4,Cr=0.86, Co=<4.4, Fe=320, Mn=1.7, Mo=<0.88,Sr=2.9, SO4=<416, V=<4.4AB-2 (18-20): Ash Pore: pH=6.4,As=3.3 j, Ba=44.1, B=7.3,Cr=10.6, Co=4.5, Fe=2840, Mn=24.1, Mo=0.53 j,Sr=25.4, SO4=200 j, V=16.9AB-2 (32.9-33.7): Ash Pore: pH=6.4,As=3.4 j, Ba=51.8, B=7.7,Cr=10.2, Co=4.7, Fe=2420, Mn=22.6, Mo=0.54 j,Sr=28.9, SO4=216 j, V=16.7ABMW-03 (15-18): Ash Pore: HFO=174.8ABMW-3S (51-53): Surficial: pH=5.9,As=<6.8, Ba=56.1, B=<17,Cr=1.3 j, Co=6.6 j, Fe=16900, Mn=319, Mo=<3.4,Sr=3.3 j, SO4=<338, V=28.8BGSB-2 (4-5): Surficial: pH=6.08,As=0.49 j, B, Ba=55 M, B=<2.5 M,Cr=3.3 M, Co=6.1, Fe=16000 M, Mn=190, Mo=<2 M,Sr=4.8, SO4=<12, V=36BGSB-2 (9-10): Surficial: pH=6.25,As=0.53 B, Ba=80, B=<2.7,Cr=34, Co=8.8, Fe=15000, Mn=210, Mo=1 j,Sr=10, SO4=<11, V=42BGSB-2 (14-15): Surficial: pH=6.21,As=0.55 B, Ba=34, B=<2.8,Cr=1.4, Co=3.5, Fe=7900, Mn=120, Mo=<2.2,Sr=10, SO4=<11, V=15BGSB-4 (4-5): Surficial: pH=6.83,As=1.6 B, Ba=69, B=<3.2,Cr=12, Co=17, Fe=27000, Mn=120, Mo=0.81 j,Sr=8.9, SO4=<13, V=94BGSB-4 (9-10): Surficial: pH=6.62,As=0.6 B, Ba=210, B=<3.1,Cr=3.4, Co=24, Fe=22000, Mn=310, Mo=<4.9,Sr=17, SO4=<13, V=69BGSB-4 (14-15): Surficial: pH=6.72,As=0.58 j, B, Ba=270, B=<3.2,Cr=10, Co=24, Fe=42000, Mn=130, Mo=<2.6,Sr=49, SO4=<14, V=160BGSB-5 (4-5): Surficial: pH=6.19,As=2.6 B, Ba=41, B=<2.9,Cr=40, Co=17, Fe=27000, Mn=240, Mo=1 j,Sr=9.8, SO4=<12, V=130BGSB-5 (9-10): Surficial: pH=5.81,As=2 B, Ba=53, B=<5.3,Cr=20, Co=12, Fe=36000, Mn=280, Mo=1.2 j,Sr=10, SO4=<12, V=120BGSB-5 (14-15): Surficial: pH=Out,As=0.34 j, B, Ba=250, B=<5.7,Cr=6.1, Co=38, Fe=31000, Mn=1200, Mo=<4.5,Sr=54, SO4=<13, V=110BGSB-8 (4-5): Surficial: pH=Out,As=0.34 j, B, Ba=120, B=<2.6,Cr=4.6, Co=4.7, Fe=11000, Mn=200, Mo=0.6 j,Sr=46, SO4=<11, V=30BGSB-8 (8-9): Surficial: pH=7.11,As=0.33 j, B, Ba=83, B=<4.2,Cr=Out, Co=24, Fe=25000, Mn=410, Mo=0.53 j,Sr=19, SO4=<11, V=45BGSB-9 (4-5): Surficial: pH=6.81,As=3.5 B, Ba=350, B=<5.8,Cr=61, Co=Out, Fe=46000, Mn=450, Mo=Out,Sr=60, SO4=<12, V=140BGSB-9 (9-10): Surficial: pH=6.66,As=1.8 B, Ba=520, B=<13,Cr=Out, Co=37, Fe=69000, Mn=2900, Mo=Out,Sr=69, SO4=<12, V=110BGSB-9 (14-15): Surficial: pH=6.81,As=1.6 B, Ba=490, B=<13,Cr=70, Co=34, Fe=69000, Mn=3100, Mo=1.9 j,Sr=38, SO4=<11, V=170MW-3BR (14.75-15): Surficial: pH=8.4,As=<2.5, Ba=74.4, B=<25.4,Cr=1.5 j, Co=4.3, Fe=7750, Mn=468, Mo=<5.1,Sr=9.6, SO4=<255, V=7.6MW-3BR (17-18): Surficial: pH=8.6,As=<2.7, Ba=74.5, B=<2.7,Cr=<2.7, Co=3.6, Fe=4450, Mn=459, Mo=<5.5,Sr=10.7, SO4=<280, V=4.4MW-3BR (22-25): Transition Zone:KD= As=9.5, B=1, Cr=IDNA, Co=IDNA, Tl=973.9, V=4.5MW-3BR (0.8-1.2): Surficial: pH=5,As=<3, Ba=57.6, B=<3,Cr=11.3, Co=5.4, Fe=8480, Mn=327, Mo=<6,Sr=5.4, SO4=<299, V=16MW-5BR (61-63): Bedrock: KD=As=3.5, B=0,Cr=IDNA, Co=6552, Tl=1140, V=IDNAMW-7BR (1-2): Surficial: pH=5.6,As=<5.1, Ba=21.5, B=<12.8,Cr=4.1, Co=<5.1, Fe=7320, Mn=27.7, Mo=<2.6,Sr=2 j, SO4=<257, V=12.8MW-7BR (22-24): Transition Zone: HFO=1471.4MW-8BR (19-22): Surficial:KD= As=525, B=2, Cr=IDNA, Co=909, Tl=2257, V=388MW-8BR (25.5-26): Surficial: pH=Out,As=<2.7, Ba=193, B=Out,Cr=Out, Co=32.9, Fe=31300, Mn=933, Mo=Out,Sr=33.6, SO4=Out, V=75.8MW-8BR (30.5-31): Surficial: pH=6.9,As=<2.7, Ba=130, B=<53.1,Cr=67.1, Co=7.4, Fe=11400, Mn=875, Mo=<10.6,Sr=9.9, SO4=<267, V=25.2MW-8BR (0.75-1.25): Surficial: pH=6,As=<3.2, Ba=147, B=<63.4,Cr=62.2, Co=21.3, Fe=24700, Mn=1230, Mo=Out,Sr=13.2, SO4=Out, V=50.6MW-9BR (44-46): Bedrock: HFO=432.7MW-10BR (0.75-1.0): Surficial: pH=6.3,As=1.4, Ba=81.8, B=13.6 j,Cr=41.9, Co=12.4, Fe=18600, Mn=527, Mo=<0.57,Sr=9.4, SO4=NA, V=35.1MW-10BR (13.0-13.75): Transition Zone: pH=8,As=1.1, Ba=479, B=26.4 j,Cr=68.3, Co=22.2, Fe=35500, Mn=3200, Mo=<5.6,Sr=28.4, SO4=<269, V=46.2MW-10BR (51.5-53.5): Bedrock: HFO=1006.9MW-11BR (0-2): Surficial: pH=5.2,As=<7.5, Ba=43.1, B=<18.8,Cr=22.6, Co=6.4 j, Fe=52900, Mn=52.6, Mo=<3.8,Sr=18.6, SO4=<354, V=208MW-11BR (30-32): Transition Zone: pH=7.4,As=<5.3, Ba=179, B=<13.1,Cr=2.3, Co=40.9, Fe=44000, Mn=212, Mo=<2.6,Sr=23.7, SO4=<257, V=191: HFO=861.5MW-12D (25-26): Surficial: pH=5.9,As=<6, Ba=67.4, B=9.8 j,Cr=3.2, Co=6, Fe=11900, Mn=395, Mo=<3,Sr=<3, SO4=Out, V=8.2MW-12D (34-35): Surficial: pH=5.5,As=<6.3, Ba=81.5, B=9.2 j,Cr=1.9, Co=9.2, Fe=10700, Mn=855, Mo=<3.1,Sr=4.6, SO4=<313, V=7.7MW-12D (50-51.5): Surficial:KD= As=591, B=1, Cr=3, Co=67, Tl=1515, V=587MW-12D (1-2): Surficial: pH=Out,As=3.6 j, Ba=19.6, B=Out,Cr=43.6, Co=<6, Fe=31200, Mn=Out, Mo=<3,Sr=<3, SO4=Out, V=61MW-12D (88.5-90.0): Bedrock: pH=7.3,As=<5.6, Ba=179, B=<14,Cr=141, Co=19.9, Fe=31500, Mn=2820, Mo=3.3,Sr=24.4, SO4=<278, V=50.1:HFO=894.7:KD= As=1715, B=1.4, Cr=IDNA, Co=2241, Tl=1759, V=557MW-13BR (0-2): Surficial: pH=4.9,As=<6.5, Ba=72.9, B=<16.3,Cr=6.1, Co=<6.5, Fe=19600, Mn=82.8, Mo=0.42 j,Sr=1.8, SO4=<334, V=32.4MW-13BR (17-27): Surficial: HFO=452.8:KD= As=56, B=0,Cr=12, Co=1132, Tl=822, V=54MW-13BR (52-54): Transition Zone: pH=8.3,As=<5.1, Ba=62.3, B=<2.5,Cr=9.2, Co=6.6, Fe=10400, Mn=789, Mo=0.75,Sr=17.6, SO4=<266, V=13.1MW-14BR (40-41.5): Bedrock: HFO=1375.3MW-15BR (0.5-1): Surficial: pH=5.2,As=<6.2, Ba=64.6, B=<15.5,Cr=10.4, Co=3.9 j, Fe=15600, Mn=108, Mo=<3.1,Sr=11.2, SO4=<305, V=27.1MW-15BR (58-63): Bedrock: HFO=2283.6MW-16BR (23-24): Surficial: pH=7.8,As=<5, Ba=28.2, B=10 j,Cr=2.1, Co=4.6 j, Fe=10600, Mn=885, Mo=<2.5,Sr=23.3, SO4=<256, V=8.4MW-16BR (33-35): Transition Zone: pH=8.1,As=<7.5, Ba=131, B=16.8 j,Cr=9.2, Co=12, Fe=19100, Mn=1630, Mo=2.9 j,Sr=37.5, SO4=<359, V=16.3MW-16BR (36.5-38): Transition Zone:KD= As=80, B=0, Cr=IDNA, Co=IDNA, Tl=564, V=40MW-16BR (1-2): Surficial: pH=5.1,As=<6.5, Ba=95.4, B=<16.2,Cr=7.6, Co=6 j, Fe=7710, Mn=1250, Mo=<3.2,Sr=3.2 j, SO4=<333, V=17.3MW-16BR (54.5-55.5): Bedrock: pH=9.6,As=<5.2, Ba=237, B=32.3,Cr=37.2, Co=19.6, Fe=38300, Mn=1010, Mo=<2.6,Sr=40, SO4=<266, V=87:KD= As=8.5, B=0, Cr=418, Co=6552, Tl=338, V=2SB-1 (1-2): Surficial: pH=6.3,As=1.2 j, Ba=49.6, B=9.6,Cr=15.7, Co=3.7, Fe=12400, Mn=104, Mo=<0.7,Sr=6, SO4=Out, V=28.3SB-1 (13.5-14.5): Surficial: pH=5.5,As=1.2 j, Ba=61.5, B=Out,Cr=<1.6, Co=8.9, Fe=8490, Mn=678, Mo=<3.2,Sr=8.3, SO4=Out, V=17.8SB-2 (0.5-2): Surficial: pH=5.3,As=1.9, Ba=65.7, B=16.3 j,Cr=12.9, Co=6.4, Fe=18300, Mn=365, Mo=<0.8,Sr=4.3, SO4=<392, V=44.8SB-2 (11.0-12.5): Surficial: pH=6,As=1.5, Ba=31.3, B=7.8,Cr=10.8, Co=1.6, Fe=10300, Mn=69.4, Mo=0.89,Sr=1.1, SO4=<309, V=23.8SB-3 (5-6): Surficial: pH=8.6,As=0.64 j, Ba=55.2, B=5.7,Cr=20.7, Co=4.9, Fe=8070, Mn=348, Mo=1.1,Sr=11, SO4=<272, V=15SB-3 (17-18.5): Surficial: pH=4.9,As=1.6, Ba=51.4, B=12.9,Cr=35.6, Co=5.2, Fe=18100, Mn=120, Mo=<0.75,Sr=4.4, SO4=<360, V=38.4SB-05 (1-2): Surficial: pH=6,As=1.8, Ba=47.1, B=<17,Cr=<1.7, Co=2.8, Fe=8280, Mn=406, Mo=<3.4,Sr=4.2, SO4=<346, V=6.8SB-05 (2.3-3.3): Surficial: pH=5.9,As=1.1, Ba=40.9, B=<13.5,Cr=<1.4, Co=1.7, Fe=6670, Mn=393, Mo=<2.7,Sr=5.2, SO4=<271, V=5.9SB-05 (8-9): Surficial: pH=6.5,As=1 j, Ba=22.2, B=<13.7,Cr=<1.4, Co=2.2, Fe=5790, Mn=195, Mo=0.36 j,Sr=3.1, SO4=<272, V=4.8SB-06 (1-2): Surficial: pH=5.9,As=1.2 j, Ba=54.8, B=2.9 j,Cr=0.74, Co=2.5, Fe=3920, Mn=192, Mo=<0.64,Sr=4.1, SO4=<309, V=2.7SB-07 (1-2): Surficial: pH=5.1,As=<5.8, Ba=68.8, B=<14.5,Cr=11.4, Co=5.9, Fe=9460, Mn=693, Mo=<2.9,Sr=5.7, SO4=<286, V=17.6SB-07 (4.5-7.5): Surficial: pH=6.4,As=<6, Ba=15.5, B=<15,Cr=8.2, Co=<6, Fe=6040, Mn=226, Mo=<3,Sr=2.9 j, SO4=<300, V=8.2: KD=As=4925, B=IDNA, Cr=6, Co=1077, Tl=1310,V=2971FOREBAYSOURCE NOTES:NOT ALL UTILITIES ARE IDENTIFIED ON THIS DRAWING. THE UTILITIES SHOWN ON THIS DRAWING ARE VISUAL AIDSTO LOCATE THE STREAMS AND WETLANDS IN THE FIELD. THE HORIZONTAL LOCATION AND THE VERTICALLOCATIONS HAVE NOT BEEN FIELD LOCATED ON ANY UTILITIES AND THE SHOWN LOCATIONS ARE APPROXIMATE.LEGENDCULVERT LOCATION500 ft COMPLIANCE BOUNDARYPARCEL LINE DUKE ENERGY (APPROXIMATE)ASH BASIN WASTE BOUNDARYSURFACE WATER FLOW DIRECTIONAPPROXIMATE STREAM (NON-JD)APPROXIMATE POND OR RESERVOIR (NON-JD)APPROXIMATE EFFLUENT CHANNELAPPROXIMATE ASH BASIN PONDED WATERWETLAND BY AMEC FOSTER WHEELERWETLAND AND STREAM BOUNDARIES PROVIDED BY AMECFOSTER WHEELER. NOTE THESE DO NOT APPEAR TO TO BEINCLUSIVE OF ALL THE BOUNDARIES AS SHOWN IN THE AMECFOSTER WHEELER NRTR MAYO REPORT.DATA NOTES:DATA PRESENTED MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLE NOTES FORQUALIFIER DEFINITIONS.DATA SHOWN ON MAP IS THE MOST RECENT DATA AVAILABLE THROUGH Q2 2017.NA=NOT ANALYZEDNM=NOT MEASUREDS-1: pH=6.4,As=56.4, Ba=271, B=40.4,Cr=5.8, Co=<14.4, Fe=247000, Mn=511, Mo=<7.2, SO4=<706, V=<14.4S-2: pH=6.5,As=<6.8, Ba=49.1, B=<17,Cr=8, Co=16.4, Fe=16000, Mn=1060, Mo=<3.4, SO4=<341, V=13.3S-2B: pH=6.6,As=<6.3, Ba=31.8, B=<15.8,Cr=3.4, Co=4.7 j, Fe=12700, Mn=427, Mo=<3.2, SO4=<312, V=5.8 jSW-CB1: pH=6.3,As=<7.1, Ba=53.1, B=<17.8,Cr=13.1, Co=4.5 j, Fe=9660, Mn=186, Mo=<3.6, SO4=<349, V=16.5S-4: pH=6.9,As=14.1, Ba=164, B=16.9 j,Cr=15.4, Co=14, Fe=101000, Mn=2400, Mo=<6, SO4=<585, V=22.3S-08: pH=6.8,As=<8.7, Ba=179, B=<21.8,Cr=4.5, Co=40.6, Fe=10700, Mn=7090, Mo=<4.4, SO4=<435, V=7.3 jS-06: pH=6.6,As=<9.9, Ba=80.9, B=<24.7,Cr=18.5, Co=7.4 j, Fe=17400, Mn=436, Mo=<4.9, SO4=<517, V=33.6SW-REF1: pH=6.4,As=<7.1, Ba=23.7, B=<17.8,Cr=17.3, Co=<7.1, Fe=7100, Mn=122, Mo=<3.6, SO4=<333, V=15.1SW-CB2SW-CB2: pH=7.0,As=<11.1, Ba=98.2, B=<27.7,Cr=13.9, Co=6.1 j, Fe=11400, Mn=383, Mo=<5.5, SO4=399 j, V=19.2PRIMARY AND SECONDARYSETTLING PONDSMW-3MW-12SWELL IN TRANSITION ZONEWELL IN SAPROLITE MATERIALWELL IN ALLUVIUM MATERIALMW-14BRWELL IN COMPETENT BEDROCKABMW-1WELL IN ASH PORE WATERPIEZOMETER IN BEDROCKDEP-1MW-3WATER SUPPLY WELL SAMPLED BY NC DEQSW-CB1SURFACE WATER SAMPLE LOCATIONMY-03SOIL BORING LOCATIONSB-3PIEZOMETER IN EARTH DAM (FILL)P1AS-16AOW SAMPLE LOCATIONTHE TOPOGRAPHY IS A COMPILATION OF LIDAR DATA OBTAINED FROM FRIS- NORTH CAROLINA FLOOD RISKINFORMATION SYSTEM AT ftp://ftp1.ncem.org/Data_Requests/County_LIDAR_Data/Personcounty/ AND ANAERIAL TOPOGRAPHIC SURVEY-MAYO PLANT BY WSP, DATER JULY 24, 2015, JOB NUMBER: 1570002.00, DWGNAME: MAYO OVERALL WK.DWGSOIL OR SEDIMENT ID (INTERVAL IN ft. bgs): FLOW LAYER, pH (S.U.),As=Arsenic (mg/kg): Ba=Barium (mg/kg): B= Boron (mg/kg): Cr (VI)=Hexavalent Chromium (mg/kg): Cr=Total Chromium (mg/kg): Co=Cobalt (mg/kg): Fe=Iron(mg/kg): Mn=Manganese (mg/kg): Mo=Molybdenum (mg/kg): Sr=Strontium (mg/kg): SO4=Sulfate (mg/kg): Tl=Thallium (mg/kg): V=Vanadium (mg/kg)SOIL AND SEDIMENT KEYBLUE COLOR DENOTES THAT THIS SEDIMENT LOCATION HAS CORRESPONDING SURFACE WATER DATA.GREEN COLOR DENOTES THAT THIS SOIL LOCATION HAS CORRESPONDING GROUNDWATER DATA.BLACK COLOR DENOTES THAT THIS SOIL LOCATION DOES NOT HAVE CORRESPONDING GROUNDWATER DATA100' RIGHT OF WAYHFO=HYDROXIDE PHASES OF IRONKD=DISTRIBUTION COEFFICIENT