NC0003468_DRSS CSA Rpt_Sect_10_Figures_20150814

ARSENIC GROUNDWATER CONCENTRATIONS BY COUNTYDUKE ENERGY CA ROLINA S, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-1
MEAN CONCENTRATION BY COUNTY OF ARSENIC IN NC PRIVATE WELL WATER IN 2009 (µg/L)ADAPTED FR OM S ANDERS ET AL. (2011)
Approximate location of DR SS
Average arsenic concentration (µg/L)
IRON CONCENTRATIONS IN GROU NDWAT ER BY COUNTYDUKE ENERGY CA ROLINA S, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-2
MEAN CONCENTRATION BY COUNTY OF IRO N IN NC PRIVATE WELL WATER IN 2010 (µg/L)NORTH CAROLINA DE PARTM ENT O F HEALTH AND HUMAN SERV ICES
Approximate location of DRSS
MANGANESE CONCENTRATIONS IN WELL WATERCOMPARED TO SOIL SYSTEMSDUKE ENERGY CA ROLINA S, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-3
MANGANES E CON CENTRATIONS IN GROUND WATER AN D SOIL REGIONS OF NO RTH C AROLIN A(GILLE SPIE 2013)
Approximate location of DRSS
$
REGION AL GROU NDWAT ER QUALITY - MANGANESEDUKE ENERGY CA ROLINA S, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-4
MANGANES E CON CENTRATIONS IN GROUND WATER (µg/L) IN A 20-M ILE RADIUS SURRO UNDING THE SITEUSGS N URE DATABASE
Legend
$DRSS
Manganese (µg/L)
0.0 0 - 12 .5 0
12 .5 1 - 2 5.00
25 .0 1 - 5 0.00
50 .0 1 - 1 00 .0 0
10 0.01 - 78 5 .8 0
N
V i r g i n i aVirginia
N o r t h C a r o l i n aNorth C a r o l i n a
$
REGION AL GROU NDWAT ER QUALITY - PHDUKE ENERGY CA ROLINA S, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-5
GROUNDWATER P H (STANDARD UNITS) IN A 20-M ILE R ADIUS SURROU NDING TH E SITEUSGS N URE DATABASE
Legend
$DRSS
pH
5.0 0 - 6.00
6.0 1 - 6.50
6.5 1 - 7.00
7.0 1 - 8.50
8.5 1 - 9.00
N
V i r g i n i aVirginia
N o r t h C a r o l i n aNorth C a r o l i n a
THALLIUM DISTR IB UTION IN SOILDUKE ENERGY CA ROLINA S, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-6
TH ALLIUM CONCEN TRATIO NS IN C HORIZON O F SUBSTRATEUSGS M INER AL RESOURCES DATABASE
Approximate location of DRSS$
$
L A T I T U D E
LONGITUDE
$
REGION AL GROU NDWAT ER QUALITY - VANADIUMDUKE ENERGY CA ROLINA S, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-7
VANADIUM C ONCENTRATIONS IN GRO UNDWATER (µg/L) IN A 20-MILE RADIUS SU RROUND ING THE SITEUSGS N URE DATABASE
Legend
$DRSS
Vanadium (µg/L)
-0.10 - 0.00
0.0 1 - 0.30
0.3 1 - 0.60
0.6 1 - 1.80
1.8 1 - 8.90
N
V i r g i n i aVirginia
N o r t h C a r o l i n aNorth C a r o l i n a
NOTES:
1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE.
2. WASTE BOUNDARY IS APPROXIMATE.
3. AS -BUILT MONITORING WELL LOCATIONS PROVIDED BY DUKE ENERGY.
4. COMPLIANCE SHALLOW MONITORING WELLS (S) ARE SCREENED ACROSS THE SURFICIAL WATER TABLE.
5. COMPLIANCE DEEP MONITORING WELLS (D) ARE SCREENED IN THE TRANSITION ZONE BETWEEN COMPETENT BEDROCK AND REGOLITH.
6. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEB SITE (DATED 2010)
7. AERIAL PHOTOGRAPHY WAS OBTAINED FROM WSP DATED APRIL 2014.
8. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a).
9. PROPOSED WELL LOCATIONS ARE APPROXIMATE AND MAY BE ADJUSTED BASED ON FIELD CONDITIONS.
10. SEEP SAMPLE LOCATIONS WERE OBTAINED BY HDR USING A TRIMBLE HANDHELD GPS UNIT.
11. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5-MINUTE SERIES TOPOGRAPHIC MAPS SOUTHEAST EDEN, NC AND NORTHEAST EDEN, NC -VA.
SCALE (FEET)
150' 0 /50' 300'
l" = 300'
N
LEGEND:
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH STORAGE AREA BOUNDARY
COMPLIANCE BOUNDARY
COMPLIANCE BOUNDARY COINCIDENT WITH DUKE PROPERTY
BOUNDARY
STREAM
LANDFILL - LAND CLEARING & INERT DEBRIS
TOPOGRAPHIC CONTOUR (4-FT INTERVAL)
ASH BASIN COMPLIANCE GROUNDWATER
MONITORING WELL (RED)
ASH BASIN VOLUNTARY GROUNDWATER
MONITORING WELL (BLACK)
SOIL BORING/GROUNDWATER
MONITORING WELL LOCATION
SURFACE WATER AND SEDIMENT SAMPLE LOCATION
SEEP AND SEDIMENT SAMPLE LOCATION
RIVER FLOW DIRECTION
MONITORING WELL AND SAMPLE LOCATION
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCK NGHAM COUNTY, NORTH CAROB NA
DATE
AUGUST 2015
FIGURE
10-8

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DATE
FIGURE
AUGUST 2015
10-0
TIME SERIES PLOT: COMPLIANCE WELL
MW-20S ANTIMONY vs TURBIDITY
DUKE ENERGY OF THE CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
Notes:
µg/L: Micrograms Per Liter
tot: Total Fraction
diss: Dissolved Fraction
2L Standard:15A NCAC 02L
NTU: Nephelometric Turbidity Unit
Field: Field Measurement
TIME SERIES PLOT: COMPLIANCE WELL
MW-21S ANTIMONY vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLONA
DATE
FIGURE
AUGUST 2015
10-11
Field: Field Measurement
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL
MW-22D ANTIMONY vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-12
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-21S ARSENIC vs TURBIDITY DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-13
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT:COMPLIANCE WELL MW-20S IRON vs TURBIDITYDUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-14
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPIANCE WELL MW-22S IRON vs TURBIDITYDUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-15
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-22D IRON vs TURBIDITYDUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-16
Notes:
µg/L: Micrograms Per Liter NTU: Nephelometric Turbidity Unit 2L Standard: 15A NCAC 02L
tot: Total Fraction Field: Field Measurement
TIME SERIES PLOT: COMPLIANCE WELL MW-23D IRON vs TURBIDITYDUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-17
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-20S MANGANESE vs TURBIDITY DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA FIGURE
AUGUST 2015
10-18
DATE
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT:COMPLIANCE WELL MW-20D
MANGANESE vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-19
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-21S MANGANESE vs TURBIDITY DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA
FIGURE
AUGUST 2015
10-20
DATE
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-21D MANGANESE vs TURBIDITY DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA FIGURE
AUGUST 2015
10-21
DATE
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
DATE
AUGUST 2015
FIGURE
10-22
TIME SERIES PLOT: COMPLIANCE WELL MW-22S
MANGANESE vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
Notes:
µg/L: Micrograms Per Liter diss: Dissolved Fraction NTU: Nephelometric Turbidity Unit
tot: Total Fraction Field: Field Measurement 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-22D MANGANESE vs TURBIDITY DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN ROCKINGHAM COUNTY, NORTH CAROLINA
FIGURE
AUGUST 2015
10-23
DATE
Notes:
tot: Total Fraction µg/l: Micrograms Per Liter Field: Field Measurement
NTU: Nephelometric Turbidity Units 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-23D
MANGANESE vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
FIGURE
AUGUST 2015
10-24
DATE
Notes:
tot: Total Fraction µg/l: Micrograms Per Liter Field: Field Measurement
diss: Dissolved Fraction NTU: Nephelometric Turbidity Units 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: COMPLIANCE WELL MW-20S
pH vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-25
Notes:
pH: Acidity or Alkalinity of a Solution. SU: pH Standard Unit of Measurement. 2LStandard: 15A NCAC 02
Field: Field Measurement NTU: Nephelometric Turbidity Units
TIME SERIES PLOT: COMPLIANCE WELL MW-21S
pH vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-26
Notes:
pH: acidity or alkalinity of a solution. NTU: Nephelometric Turbidity Units 2L Standard: 15A NCAC 02L
Field: Field Measurement SU: pH Standard Unit of Measurement.
TIME SERIES PLOT: COMPLIANCE WELL MW-23D
pH vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-27
Notes:
Field: Field Measurement SU: pH Standard Unit of Measurement 2LStandard: 15A NCAC 02L
pH: Acidity or Alkalinity of a Solution NTU: Nephelometric Turbidity Units
TIME SERIES PLOT: COMPLIANCE WELL MW-21D
SULFATE vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-28
Notes:
mg/l: Milligrams Per Liter NTU: Nephelometric Turbidity Unit
Field: Field Measurement 2L Standard: 15A NCAC
TIME SERIES PLOT: COMPLIANCE WELL MW-21D
TOTAL DISSOLVED SOLIDS vs TURBIDITY
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-29
Notes:
TDS: Total Dissolved Soilds Field: Field Measurement 2L Standard: 15A NCAC 02L
mg/l: Milligrams Per Liter NTU: Nephelometric Turbidity Unit
TIME SERIES PLOT: ANTIMONY
SHALLOW COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-30
Notes:
S: Shallow Well D: Deep Well 2L Standard: 15A NCAC 02L
BG: Background Well µg/L: Microgrmas Per Liter
TIME SERIES PLOT:ANTIMONY
DEEP COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-31
Notes:
D: Deep Well µg/L: Mcrograms Per Liter
BG: Background Well 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: ARSENIC
SHALLOW COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-32
Notes:
D: Deep Well BG: Background Well 2L Standard: 15A NCAC 02L
S: Shallow Well µg/L: Micrograms Per Liter
TIME SERIES PLOT: ARSENIC
DEEP COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-33
Notes:
D: Deep Well µg/L: Micrograms Per Liter
BG: Background Well 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: BORON
SHALLOW COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-34
Notes:
D: Deep Well µg/L: Micrograms Per Liter BG: Background Well
S: Shallow Well 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: BORON
DEEP COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-35
Notes:
BG: Background Well MW: Monitoring Well
D: Deep Well
µg/L: Micrograms Per Liter
2L Standard: 15A NCAC 02L
TIME SERIES PLOT: IRON
SHALLOW COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-36
Notes:
MW: Monitoring Well S: Shallow Well µg/L: Micrograms Per Liter
D: Deep Well 2L Standard: 15A NCAC 02L BG: Background Well
TIME SERIES PLOT: IRON
DEEP COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-37
Notes:
D: Deep MW: Monitoring Well 2L Standard: 15A NCAC 02L
BG: Background µg/L: Micrograms Per Liter
TIME SERIES PLOT: MANGANESE
SHALLOW COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-38
Notes:
D: Deep Well BG: Background Well 2L Standard: 15A NCAC
S: Shallow Well µg/L: Micrograms Per Liter
TIME SERIES PLOT: MANGANESE
DEEP COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-39
Notes:
BG: Background Well D: Deep Well 2L Standard: 15A NCAC 2015 02L
MW: Monitoring Well µg/L: Micrograms Per Liter
TIME SERIES PLOT: pH
SHALLOW COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-40
Notes:
MW: Monitoring Well BG: Background Well 2L: 15A NCAC 02L
D: Deep Well SU: pH Standard Unit of Measurement S: Shallow Well
TIME SERIES PLOT: pH
DEEP COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-41
Notes:
MW: Monitoring Well 2L Standard: 15A NCAC 02L BG: Background Well
D: Deep Well SU: pH Standard Unit of Measurement
TIME SERIES PLOT: SULFATE
SHALLOW COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-42
Notes:
MW: Monitoring Well S: Shallow Well 2L Standard: 15A NCAC 02L
D: Deep Well mg/l: Milligrams Per Liter BG: Background Well
TIME SERIES PLOT: SULFATE
DEEP COMPLIANCE MONITORING WELLS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-43
Notes:
MW: Monitoring Well BG: Background Well 2L Standard: 15A NCAC 02L
D: Deep Well mg/L: Milligrams Per Liter
TIME SERIES PLOT:MANGANESE (TOT)
MW-20S vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-44
Notes:
D: Deep Well µg/L: Microgram Per Liter
BG: Background Well 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: MANGANESE (TOT)
MW-20D vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
AUGUST 2015
FIGURE
10-45
Notes:
MW: Monitoring Well µg/L: Micrograms Per Liter 2l Standard: 15A NCAC 02L
D: Deep Well BG: Background
TIME SERIES PLOT: MANGANESE (TOT)
MW-21S vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-46
Notes:
MW: Monitoring Well S: Shallow Well 2l Standard: 15A NCAC 02L
D: Deep Well µg/L: Micrograms Per Liter
TIME SERIES PLOT:MANGANESE (TOT)
MW-21D vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-47
Notes:
D: Deep Well 2L Standard: 15A NCAC 02L µg/L: Micrograms Per Liter
MW: Monitoring Well BG: Background
TIME SERIES PLOT:MANGANESE (TOT
MW-22S vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-48
Notes:
MW- Monitoring Well S: Shallow Well
D: Deep Well 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: MANGANESE (TOT)
MW-22D vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-49
D: Deep Well
Notes:
µg/L: Micrograms Per Liter
BG: Background Well 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: IRON (TOT)
MW-20S vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-50
µg/L: Microgram Per LiterNotes:
BG: Background Well
S: Shallow Well 2L Standard: 15A NCAC 02L
D: Deep Well
TIME SERIES PLOT: IRON (TOT)
MW-22S vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKIMGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-51
Notes:
BG: Background Well
S: Shallow Well
D: Deep Well SU: pH Standard Unit of Measurement
2L Standard: 15A NCAC 02L µg/L: Micrograms Per Liter
TIME SERIES PLOT: IRON (TOT)
MW-22D vs MW-23D (BG) IRON (TOT)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-52
SU: pH Standard Unit of Measurement
Notes:
BG: Background Well
S: Shallow Well 2L Standard: 15A NCAC 02L
TIME SERIES PLOT: pH (FIELD)
MW-20S vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-53
Notes:
BG: Background Well
S: Shallow Well SU: pH Standard Unit of Measurement
2LStandard: 15A NCAC 02L
TIME SERIES PLOT: pH (FIELD)
MW-21S vs MW-23D (BG)
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-54
SU: pH Standard Unit of Measuremen
D: Deep Well
Notes:
BG: Background Well
S:Shallow Well
STACKED TIME SERIES PLOT: MANGANESE EXCEEDANCES FOR COMPLIANCE WELLS DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
FIGURE
AUGUST 2015
10-55
DATE
Notes:
µg/L: Micrograms Per Liter 2
L Standard: 15A NCAC 02L
D: Deep Well 2L Standard: 15A NCAC 02L
S: Shallow Well
STACKED TIME SERIES PLOT:IRON EXCEEDANCES FOR COMPLIANCE WELLS DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASINROCKINGHAM COUNTY, NORTH CAROLINA
FIGURE
AUGUST 2015
10-56
DATE
Notes:
µg/L: Micrograms Per Liter D: Deep Well
2L Standard: 15A NCAC 02L S: Shallow Well
MW- 20S vs MW-23D (BG)
RATIO OF CONCENTRATIONS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-57
Note:
Note:
Filed: Field Measurement
DATE
FIGURE
AUGUST 2015
10-58
MW-20D vs MW-23D (BG)
RATIO OF CONCENTRATIONS
DUKE ENERGY OF THE CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
Note:
MW-21S vs MW-23D (BG)
RATIO OF CONCENTRATIONS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-59
Note:
DATE
FIGURE
AUGUST 2015
10-60
MW-21D vs MW-23D (BG)
RATIO OF CONCENTRATIONS
DUKE ENERGY OF THE CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
Note:
MW-22S vs MW-23D (BG)
RATIO OF CONCENTRATIONS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-61
Note:
MW-22D vs MW-23D (BG)
RATIO OF CONCENTRATIONS
DUKE ENERGY CAROLINAS, LLC
DAN RIVER STEAM STATION ASH BASIN
ROCKINGHAM COUNTY, NORTH CAROLINA
DATE
FIGURE
AUGUST 2015
10-62
Note:
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OW320DOW320D
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AB15S/SL/DAB15S/SL/D
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NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board
GROU NDWATER ANALYTICAL RESU LTS – PLAN VIEW (2L EXCEEDANCES)
ROCKINGHAM COUNTY, NORTH CAROLINA
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LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
&<ASSESSMENT TEMPORARY MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-63
500 0 500 1,000
SCALE (FEET)DU KE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
Arsenic 11.7Manganese 410Vanadium 1.8
AB-35BRAnalyte (µg/L)
N
Cobalt 1Manganese 1,000Vanadium 0.77 J
AB-5DAnalyte (µg/L)
NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW
mg/L: MILLIGRAMS PER LITERµg/L: MICROGRAMS PER LITER
GWA-10D, GWA-14S, GWA-10S DRY AT THE TIME OF SAMPLING
Iron 466Manganese 910Vanadium 2.7
AS-8BRAnalyte (µg/L)
Manganese 280
MW-23DAnalyte (µg/L)
Cobalt 9.7Manganese 1,700Vanadium 0.45 J
GWA-8SAnalyte (µg/L)Iron 413Manganese 1,200Sulfate 368,000Total Dissolved Solids 690,000 J-Vanadium 5.2
GWA-8DAnalyte (µg/L)
Manganese 150
GWA-12SAnalyte (µg/L)Vanadium 5.65
GWA-12DAnalyte (µg/L)
Cobalt 1.2Iron 3,290Manganese 640Vanadium 1.8
GWA-9DAnalyte (µg/L)Cobalt 9.3Iron 5,100Manganese 220Vanadium 5.1
GWA-9SAnalyte (µg/L)
Cobalt 10.1Iron 3,600Manganese 450Vanadium 2.6
MW-12Analyte (µg/L)Cobalt 4.8Iron 6,100Manganese 1,400Vanadium 1.4
MW-12DAnalyte (µg/L)
Boron 1,000Cobalt 2.2Iron 928Manganese 430Vanadium 1.1
AS-12SAnalyte (µg/L)
Manganese 500Vanadium 0.41 J
MW-20DAnalyte (µg/L)Cobalt 2.1Iron 2,800Manganese 820
MW-20SAnalyte (µg/L)
Chromium 13.8Cobalt 3Iron 1,200Manganese 120Vanadium 1.5
GWA-1SAnalyte (µg/L)Iron 719Manganese 680Vanadium 0.79 J
GWA-1DAnalyte (µg/L)
Iron 383 J+Manganese 410Vanadium 1.8
MW-301BRAnalyte (µg/L)
Iron 2,760Manganese 500Vanadium 3.7
MW-303BRAnalyte (µg/L)
Arsenic 620Iron 36,400Manganese 580
OW-308DAnalyte (µg/L)
Antimony 2.1Chromium 11Vanadium 8.4
MW-317BRAnalyte (µg/L)
Antimony 2.2Vanadium 0.57 J
GWA-2DAnalyte (µg/L)Cobalt 2.3Iron 909Manganese 94Vanadium 1.3
GWA-2SAnalyte (µg/L)
Boron 920Iron 623 JManganese 920Total Dissolved Solids 530,000Vanadium 1.6
MW-306BRAnalyte (µg/L)
Cobalt 1.1Iron 3,920Manganese 270Vanadium 0.69 J+
AS-6DAnalyte (µg/L)
Cobalt 12.2Manganese 533
GWA-3SAnalyte (µg/L)Chromium 17.7Cobalt 1.02Iron 411Manganese 122
GWA-3DAnalyte (µg/L)
Cobalt 1.4Iron 1,700Manganese 810Vanadium 1.2 J+
GWA-11DAnalyte (µg/L)Chromium 15.6Cobalt 3.3Manganese 1,200Vanadium 0.52 J
GWA-11SAnalyte (µg/L)
Iron 370 J+Vanadium 1.5
GWA-4DAnalyte (µg/L)Cobalt 2.7Iron 530Manganese 590Vanadium 0.6 J
GWA-4SAnalyte (µg/L)
Boron 810Cobalt 4Iron 4,480Manganese 770Vanadium 4.8
AS-4DAnalyte (µg/L)
Manganese 300Vanadium 0.67 J
GWA-14DAnalyte (µg/L)
Arsenic 16.8Manganese 670Vanadium 1.5
MW-21SAnalyte (µg/L)Iron 550Manganese 920Sulfate 274,000Total Dissolved Solids 639,000
MW-21DAnalyte (µg/L)
Iron 307Manganese 630Sulfate 416,000Total Dissolved Solids 873,000Vanadium 0.49 J
GWA-5BRAnalyte (µg/L)
Iron 840Manganese 270Sulfate 307,000Total Dissolved Solids 705,000Vanadium 1.5
GWA-15DAnalyte (µg/L)
Iron 1,910Manganese 2,200Sulfate 323,000Total Dissolved Solids 844,000Vanadium 0.84 J
MW-308BRAnalyte (µg/L)
Iron 850Manganese 130
MW-11DAnalyte (µg/L)Cobalt 29.2Iron 400Manganese 880Vanadium 2.6
MW-11Analyte (µg/L)
Iron 490Manganese 370Vanadium 0.91 J
AB-30BRAnalyte (µg/L)Antimony 1.5Manganese 430Vanadium 0.86 J
AB-30DAnalyte (µg/L)Antimony 2.6 JCobalt 29Manganese 1,500
AB-30SAnalyte (µg/L)
Antimony 1.9Cobalt 1.1Vanadium 1.5
AB-10DAnalyte (µg/L)
Manganese 1,000
MW-10DAnalyte (µg/L)Iron 1,200Manganese 580Vanadium 0.89 J
MW-311BRAnalyte (µg/L)
Arsenic 809Boron 1,100Cobalt 1.2Iron 1,400Manganese 1,200Vanadium 1.2
OW-310DAnalyte (µg/L)
Antimony 1Chromium 30.1Vanadium 5.5
AB-25BRAnalyte (µg/L)Antimony 1.7Boron 840Manganese 180Vanadium 0.69 J
AB-25DAnalyte (µg/L)
Iron 760Manganese 270Vanadium 0.33 J
MW-22BRAnalyte (µg/L)Iron 15,600Manganese 950Vanadium 0.74 J
MW-22SAnalyte (µg/L)
Cobalt 6.4Iron 990Manganese 1,000Vanadium 2.3
MW-9Analyte (µg/L)Boron 1,000Cobalt 1.5Iron 2,600Manganese 600Vanadium 11.1
MW-9DAnalyte (µg/L)
Boron 1,310Cobalt 13 JIron 1,150Manganese 577Vanadium 0.654 J
MW-318DAnalyte (µg/L)
Iron 7,400Manganese 1,300
GWA-6DAnalyte (µg/L)Cobalt 1.3 JIron 21,200Manganese 3,700Vanadium 6.5
GWA-6SAnalyte (µg/L)
Iron 380Vanadium 1.3
MW-314BRAnalyte (µg/L)Cobalt 2.8Iron 1,610Manganese 1,000Vanadium 0.3 J
GWA-7DAnalyte (µg/L)Cobalt 17.7Iron 310Manganese 950Vanadium 0.38 J
GWA-7SAnalyte (µg/L)
Cobalt 2.1Iron 890Manganese 110Vanadium 2.6
BG-5SAnalyte (µg/L)Cobalt 1Manganese 910
BG-5DAnalyte (µg/L)
Iron 377Manganese 110Vanadium 2.5
MW-310BRAnalyte (µg/L)
Cobalt 2.1Iron 2,900Manganese 1,500Vanadium 1.6
AS-2DAnalyte (µg/L)
Cobalt 3.45Iron 6,040Manganese 509Thallium 0.256Vanadium 3.36
GWA-10DAnalyte (µg/L)
Antimony 2.9Selenium 35.3Vanadium 15.3
AS-10DAnalyte (µg/L)
Iron 2,900Manganese 1,140Vanadium 1.88 J
AS-8DAnalyte (µg/L)
Antimony 1.21Thallium 0.55Vanadium 1.38
MW-23BRAnalyte (µg/L)
Chromium 24.8Cobalt 2.2Iron 1,300Manganese 1,800Vanadium 1.4
MW-315BRAnalyte (µg/L)
Analyte CAS No.NC 2L GroundwaterIMAC1
Antimony 7440-36-0 1*Arsenic 7440-38-2 10Barium7440-39-3 700Beryllium7440-41-7 4*Boron 7440-42-8 700Cadmium7440-43-9 2Chloride**16887-00-6 250,000Chromium7440-47-3 10Cobalt7440-48-4 1*Copper**7440-50-8 1,000Iron7439-89-6 300Lead7439-92-1 15Manganese7439-96-5 50Mercury7439-97-6 1Nickel7440-02-0 100Nitrate**14797-55-8 10,000Nitrite as N**14797-65-0 1,000Selenium7782-49-2 20Sulfate**14808-79-8 250,000Thallium7440-28-0 0.2Total Dissolved Solids** TDS 500,000Vanadium7440-62-2 0.3*Zinc**7440-66-6 1000* Interim Maximum Allowable Concentration (IMAC)
All units shown in µg/L.
** Unit reported in mg/L in standard, converted here to µg/L to match units displayed on figure.
1 - North Carolina 15A NCAC 02L.0202 Groundwater Standards (As of 4/2013). Interim Maximum Allowable Concentration shown where no standard is available for comparison.
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AB-30SAB-30S2.6 J μg/L2.6 J μg/L (0.5 UJ μg/L) (0.5 UJ μg/L)
AS-12SAS-12S0.23 J μg/L (0.24 J μg/L)0.23 J μg/L (0.24 J μg/L)
BG-5SBG-5S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-11SGWA-11S0.18 J μg/L ( ˂ 0.5 U μg/L)0.18 J μg/L ( ˂ 0.5 U μg/L)GWA-12SGWA-12S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-1SGWA-1S0.5 UJ μg/L (0.37 J μg/L)0.5 UJ μg/L (0.37 J μg/L)
GWA-2SGWA-2S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-3SGWA-3S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4SGWA-4S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-6SGWA-6S2.5 U μg/L2.5 U μg/L ( ˂ 2.5 U μg/L)( ˂ 2.5 U μg/L)
GWA-7SGWA-7S0.23 J μg/L ( ˂ 0.5 U μg/L)0.23 J μg/L ( ˂ 0.5 U μg/L)
GWA-8SGWA-8S0.16 J μg/L (0.22 J μg/L)0.16 J μg/L (0.22 J μg/L)
GWA-9SGWA-9S0.22 J μg/L (0.19 J μg/L)0.22 J μg/L (0.19 J μg/L)
MW-10MW-100.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-11MW-110.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-12MW-120.18 J μg/L ( ˂ 0.5 U μg/L)0.18 J μg/L ( ˂ 0.5 U μg/L)
MW-20SMW-20S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-21SMW-21S0.29 J μg/L (0.3 J μg/L)0.29 J μg/L (0.3 J μg/L)
MW-22SMW-22S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)MW-9MW-90.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
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S R -1 7 7 9
ANTIMONY ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-64
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR ANTIMONY IS 1 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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AB-10DAB-10D1.9 μg/L1.9 μg/L (8.8 μg/L)(8.8 μg/L)
AB-25DAB-25D1.7 μg/L1.7 μg/L (1.6 μg/L)(1.6 μg/L)
AB-30DAB-30D1.5 μg/L1.5 μg/L (2 μg/L)(2 μg/L)
AS-10DAS-10D2.9 μg/L2.9 μg/L (2.7 μg/L)(2.7 μg/L)
AS-2DAS-2D0.16 J μg/L ( ˂ 0.5 U μg/L)0.16 J μg/L ( ˂ 0.5 U μg/L)
AS-4DAS-4D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AS-6DAS-6D0.24 J μg/L (0.16 J μg/L)0.24 J μg/L (0.16 J μg/L)
AS-8DAS-8D1 UJ μg/L (1 UJ μg/L)1 UJ μg/L (1 UJ μg/L)
BG-5DBG-5D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-10DGWA-10D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-11DGWA-11D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-12DGWA-12D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)GWA-14DGWA-14D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-15DGWA-15D0.5 U μg/L (0.17 J μg/L)0.5 U μg/L (0.17 J μg/L)
GWA-1DGWA-1D0.31 J μg/L (0.24 J μg/L)0.31 J μg/L (0.24 J μg/L)
GWA-2DGWA-2D2.2 μg/L2.2 μg/L (0.55 μg/L) (0.55 μg/L)
GWA-3DGWA-3D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4DGWA-4D0.49 J μg/L (0.23 J μg/L)0.49 J μg/L (0.23 J μg/L)
GWA-6DGWA-6D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-7DGWA-7D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-8DGWA-8D0.71 μg/L (0.6 μg/L)0.71 μg/L (0.6 μg/L)
GWA-9DGWA-9D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-10DMW-10D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-11DMW-11D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-12DMW-12D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-20DMW-20D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-21DMW-21D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-23DMW-23D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-318DMW-318D1 UJ μg/L (1 UJ μg/L)1 UJ μg/L (1 UJ μg/L)
MW-9DMW-9D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
OW-308DOW-308D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)OW-310DOW-310D0.5 UJ μg/L ( ˂ 0.5 U μg/L)0.5 UJ μg/L ( ˂ 0.5 U μg/L)
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S R -1 7 7 9
ANTIMONY ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-65
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR ANTIMONY IS 1 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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AB-25BRAB-25BR1 μg/L (1 μg/L)1 μg/L (1 μg/L)
AB-30BRAB-30BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)AB-35BRAB-35BR0.48 J μg/L (0.51 μg/L)0.48 J μg/L (0.51 μg/L)
AS-8BRAS-8BR0.21 J μg/L ( ˂ 0.5 U μg/L)0.21 J μg/L ( ˂ 0.5 U μg/L)GWA-5BRGWA-5BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-22BRMW-22BR0.16 J μg/L ( ˂ 0.5 U μg/L)0.16 J μg/L ( ˂ 0.5 U μg/L)
MW-23BRMW-23BR1.21 μg/L1.21 μg/L (1.16 μg/L)(1.16 μg/L)
MW-301BRMW-301BR0.16 J μg/L ( ˂ 0.5 U μg/L)0.16 J μg/L ( ˂ 0.5 U μg/L)
MW-303BRMW-303BR0.25 J μg/L (0.16 J μg/L)0.25 J μg/L (0.16 J μg/L)
MW-306BRMW-306BR0.38 J μg/L (0.43 J μg/L)0.38 J μg/L (0.43 J μg/L)
MW-308BRMW-308BR0.24 J μg/L (0.22 J μg/L)0.24 J μg/L (0.22 J μg/L)
MW-310BRMW-310BR0.34 J μg/L (0.32 J μg/L)0.34 J μg/L (0.32 J μg/L)
MW-311BRMW-311BR0.3 J μg/L (0.22 J μg/L)0.3 J μg/L (0.22 J μg/L)MW-314BRMW-314BR0.47 J μg/L (0.53 μg/L)0.47 J μg/L (0.53 μg/L)
MW-315BRMW-315BR0.21 J μg/L (0.29 J+ μg/L)0.21 J μg/L (0.29 J+ μg/L)
MW-317BRMW-317BR2.1 μg/L2.1 μg/L (1 μg/L) (1 μg/L)
N o n D e t e c t
N o n D e t e c t
1 1
1 1
1
1
S R -1 7 7 9
ANTIMONY ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-66
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR ANTIMONY IS 1 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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D D a a n n R R i i v v e e r r
AB-30SAB-30S0.5 U μg/L (0.5 UJ μg/L)0.5 U μg/L (0.5 UJ μg/L)
AS-12SAS-12S0.52 μg/L (0.48 J μg/L)0.52 μg/L (0.48 J μg/L)
BG-5SBG-5S0.28 J μg/L ( ˂ 0.5 U μg/L)0.28 J μg/L ( ˂ 0.5 U μg/L)
GWA-11SGWA-11S0.18 J μg/L (0.14 J μg/L)0.18 J μg/L (0.14 J μg/L)GWA-12SGWA-12S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-1SGWA-1S0.18 J μg/L ( ˂ 0.5 U μg/L)0.18 J μg/L ( ˂ 0.5 U μg/L)
GWA-2SGWA-2S0.14 J μg/L ( ˂ 0.5 U μg/L)0.14 J μg/L ( ˂ 0.5 U μg/L)
GWA-3SGWA-3S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4SGWA-4S0.2 J μg/L (0.18 J μg/L)0.2 J μg/L (0.18 J μg/L)
GWA-6SGWA-6S2.2 J μg/L2.2 J μg/L (2.4 J μg/L)(2.4 J μg/L)
GWA-7SGWA-7S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-8SGWA-8S0.57 μg/L (0.6 μg/L)0.57 μg/L (0.6 μg/L)
GWA-9SGWA-9S0.63 μg/L ( ˂ 0.5 U μg/L)0.63 μg/L ( ˂ 0.5 U μg/L)
MW-10MW-100.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-11MW-110.14 J μg/L ( ˂ 0.5 U μg/L)0.14 J μg/L ( ˂ 0.5 U μg/L)
MW-12MW-120.71 μg/L (0.42 J μg/L)0.71 μg/L (0.42 J μg/L)
MW-20SMW-20S0.63 μg/L (0.58 μg/L)0.63 μg/L (0.58 μg/L)
MW-21SMW-21S16.8 μg/L16.8 μg/L (16.9 μg/L)(16.9 μg/L)
MW-22SMW-22S0.94 μg/L (0.88 μg/L)0.94 μg/L (0.88 μg/L)MW-9MW-90.27 J μg/L (0.14 J μg/L)0.27 J μg/L (0.14 J μg/L)
S R -1 7 7 9
1 0 1 0
1 1
N o n D e t e c t
N o n D e t e c t
ARSENIC ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-67
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR ARSENIC IS 10 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
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&<
&<
D D a a n n R R i i v v e e r r
AB-10DAB-10D0.68 μg/L (0.66 μg/L)0.68 μg/L (0.66 μg/L)
AB-25DAB-25D0.45 J μg/L (0.31 J μg/L)0.45 J μg/L (0.31 J μg/L)
AB-30DAB-30D0.41 J μg/L (0.46 J μg/L)0.41 J μg/L (0.46 J μg/L)
AB-5DAB-5D8.5 μg/L8.5 μg/L (8.8 μg/L)(8.8 μg/L)
AS-10DAS-10D8.9 μg/L8.9 μg/L (8.5 μg/L)(8.5 μg/L)
AS-2DAS-2D0.29 J μg/L (0.24 J μg/L)0.29 J μg/L (0.24 J μg/L)
AS-4DAS-4D1.8 μg/L (1.5 μg/L)1.8 μg/L (1.5 μg/L)
AS-6DAS-6D2 μg/L2 μg/L (1.5 μg/L) (1.5 μg/L)
AS-8DAS-8D1.24 J μg/L (1.2 J μg/L)1.24 J μg/L (1.2 J μg/L)
BG-5DBG-5D0.5 U μg/L (0.17 J+ μg/L)0.5 U μg/L (0.17 J+ μg/L)
GWA-10DGWA-10D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-11DGWA-11D0.25 J μg/L (0.2 J μg/L)0.25 J μg/L (0.2 J μg/L)GWA-12DGWA-12D3.71 μg/L3.71 μg/L (2.54 μg/L)(2.54 μg/L)GWA-14DGWA-14D0.38 J μg/L (0.36 J μg/L)0.38 J μg/L (0.36 J μg/L)
GWA-15DGWA-15D0.18 J μg/L (0.14 J μg/L)0.18 J μg/L (0.14 J μg/L)
GWA-1DGWA-1D1.2 μg/L (1 μg/L)1.2 μg/L (1 μg/L)
GWA-2DGWA-2D1.3 μg/L (1.1 μg/L)1.3 μg/L (1.1 μg/L)
GWA-3DGWA-3D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4DGWA-4D0.37 J μg/L (0.39 J μg/L)0.37 J μg/L (0.39 J μg/L)
GWA-6DGWA-6D0.96 μg/L (0.98 μg/L)0.96 μg/L (0.98 μg/L)
GWA-7DGWA-7D0.13 J μg/L ( ˂ 0.5 U μg/L)0.13 J μg/L ( ˂ 0.5 U μg/L)
GWA-8DGWA-8D1.4 μg/L (1.2 μg/L)1.4 μg/L (1.2 μg/L)
GWA-9DGWA-9D2.3 μg/L2.3 μg/L (2.1 μg/L)(2.1 μg/L)
MW-10DMW-10D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-11DMW-11D0.25 J μg/L (0.18 J μg/L)0.25 J μg/L (0.18 J μg/L)
MW-12DMW-12D0.44 J μg/L (0.44 J μg/L)0.44 J μg/L (0.44 J μg/L)
MW-20DMW-20D0.91 μg/L (0.58 μg/L)0.91 μg/L (0.58 μg/L)
MW-21DMW-21D0.21 J μg/L (0.41 J+ μg/L)0.21 J μg/L (0.41 J+ μg/L)
MW-23DMW-23D0.27 J μg/L (0.33 J μg/L)0.27 J μg/L (0.33 J μg/L)
MW-318DMW-318D1 UJ μg/L (1 UJ μg/L)1 UJ μg/L (1 UJ μg/L)
MW-9DMW-9D0.21 J μg/L ( ˂ 0.5 U μg/L)0.21 J μg/L ( ˂ 0.5 U μg/L)
OW-308DOW-308D620 μg/L620 μg/L (585 μg/L)(585 μg/L)
OW-310DOW-310D809 μg/L809 μg/L (731 μg/L)(731 μg/L)
1010
S R -1 7 7 9
ARSENIC ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-68
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR ARSENIC IS 10 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
D D a a n n R R i i v v e e r r
1 010
55
Non Detect
Non Detect
55
AB-25BRAB-25BR2.6 μg/L2.6 μg/L (2.4 μg/L)(2.4 μg/L)
AB-30BRAB-30BR0.83 μg/L (0.82 μg/L)0.83 μg/L (0.82 μg/L)
AB-35BRAB-35BR11.7 μg/L11.7 μg/L (12 μg/L)(12 μg/L)
AS-8BRAS-8BR0.34 J μg/L (0.16 J μg/L)0.34 J μg/L (0.16 J μg/L)GWA-5BRGWA-5BR0.83 μg/L (0.85 μg/L)0.83 μg/L (0.85 μg/L)
MW-22BRMW-22BR0.41 J μg/L (0.39 J μg/L)0.41 J μg/L (0.39 J μg/L)
MW-23BRMW-23BR6.36 μg/L6.36 μg/L (6.29 μg/L)(6.29 μg/L)
MW-301BRMW-301BR0.9 μg/L (0.84 μg/L)0.9 μg/L (0.84 μg/L)
MW-303BRMW-303BR8.6 μg/L8.6 μg/L (6.4 μg/L)(6.4 μg/L)
MW-306BRMW-306BR1 μg/L (1.1 μg/L)1 μg/L (1.1 μg/L)
MW-308BRMW-308BR1.8 μg/L (1.7 μg/L)1.8 μg/L (1.7 μg/L)
MW-310BRMW-310BR1.3 μg/L (1.1 μg/L)1.3 μg/L (1.1 μg/L)
MW-311BRMW-311BR0.32 J μg/L (0.35 J μg/L)0.32 J μg/L (0.35 J μg/L)MW-314BRMW-314BR0.3 J μg/L (0.36 J μg/L)0.3 J μg/L (0.36 J μg/L)
MW-315BRMW-315BR0.19 J μg/L (0.16 J μg/L)0.19 J μg/L (0.16 J μg/L)
MW-317BRMW-317BR0.71 μg/L (0.63 μg/L)0.71 μg/L (0.63 μg/L)
S R -1 7 7 9
ARSENIC ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-69
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR ARSENIC IS 10 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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D D a a n n R R i i v v e e r r
AB-30SAB-30S0.45 μg/L (0.2 UJ μg/L)0.45 μg/L (0.2 UJ μg/L)
AS-12SAS-12S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
BG-5SBG-5S0.087 J μg/L ( ˂ 0.2 U μg/L)0.087 J μg/L ( ˂ 0.2 U μg/L)
GWA-11SGWA-11S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)GWA-12SGWA-12S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-1SGWA-1S0.094 J μg/L ( ˂ 0.2 U μg/L)0.094 J μg/L ( ˂ 0.2 U μg/L)
GWA-2SGWA-2S0.078 J μg/L ( ˂ 0.2 U μg/L)0.078 J μg/L ( ˂ 0.2 U μg/L)
GWA-3SGWA-3S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4SGWA-4S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-6SGWA-6S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-7SGWA-7S3.7 μg/L 3.7 μg/L (4.7 μg/L)(4.7 μg/L)
GWA-8SGWA-8S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-9SGWA-9S0.67 μg/L (0.077 J μg/L)0.67 μg/L (0.077 J μg/L)
MW-10MW-100.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-11MW-110.5 μg/L (0.42 μg/L)0.5 μg/L (0.42 μg/L)
MW-12MW-120.22 μg/L (0.11 J μg/L)0.22 μg/L (0.11 J μg/L)
MW-20SMW-20S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-21SMW-21S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-22SMW-22S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)MW-9MW-90.21 μg/L (0.11 J μg/L)0.21 μg/L (0.11 J μg/L)
S R -1 7 7 9
N
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n

D
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t
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N
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D
e
t
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t
44
BERYLLIUM ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-70
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR BERYLLIUM IS 4 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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D D a a n n R R i i v v e e r r
AB-10DAB-10D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AB-25DAB-25D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AB-30DAB-30D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AB-5DAB-5D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AS-10DAS-10D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AS-2DAS-2D0.096 J μg/L ( ˂ 0.2 U μg/L)0.096 J μg/L ( ˂ 0.2 U μg/L)
AS-4DAS-4D0.18 J μg/L ( ˂ 0.2 U μg/L)0.18 J μg/L ( ˂ 0.2 U μg/L)
AS-6DAS-6D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AS-8DAS-8D1 UJ μg/L (1 UJ μg/L)1 UJ μg/L (1 UJ μg/L)
BG-5DBG-5D0.2 U μg/L (0.15 J μg/L)0.2 U μg/L (0.15 J μg/L)
GWA-10DGWA-10D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-11DGWA-11D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)GWA-12DGWA-12D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)GWA-14DGWA-14D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-15DGWA-15D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-1DGWA-1D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-2DGWA-2D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-3DGWA-3D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4DGWA-4D0.2 U μg/L (0.1 J μg/L)0.2 U μg/L (0.1 J μg/L)
GWA-6DGWA-6D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-7DGWA-7D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-8DGWA-8D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-9DGWA-9D0.085 J μg/L ( ˂ 0.2 U μg/L)0.085 J μg/L ( ˂ 0.2 U μg/L)
MW-10DMW-10D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-11DMW-11D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-12DMW-12D0.11 J μg/L ( ˂ 0.2 U μg/L)0.11 J μg/L ( ˂ 0.2 U μg/L)
MW-20DMW-20D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-21DMW-21D0.2 U μg/L (0.33 μg/L)0.2 U μg/L (0.33 μg/L)
MW-23DMW-23D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-318DMW-318D1 UJ μg/L (1 UJ μg/L)1 UJ μg/L (1 UJ μg/L)
MW-9DMW-9D0.19 J μg/L ( ˂ 0.2 U μg/L)0.19 J μg/L ( ˂ 0.2 U μg/L)
OW-308DOW-308D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
OW-310DOW-310D0.2 U μg/L (0.27 μg/L)0.2 U μg/L (0.27 μg/L)
S R -1 7 7 9
BERYLLIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-71
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR BERYLLIUM IS 4 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-25BRAB-25BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AB-30BRAB-30BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)AB-35BRAB-35BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
AS-8BRAS-8BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)GWA-5BRGWA-5BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-22BRMW-22BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-23BRMW-23BR1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
MW-301BRMW-301BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-303BRMW-303BR0.2 UJ μg/L ( ˂ 0.2 U μg/L)0.2 UJ μg/L ( ˂ 0.2 U μg/L)
MW-306BRMW-306BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-308BRMW-308BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-310BRMW-310BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-311BRMW-311BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)MW-314BRMW-314BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-315BRMW-315BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
MW-317BRMW-317BR0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
S R -1 7 7 9
BERYLLIUM ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-72
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR BERYLLIUM IS 4 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-30SAB-30S290 μg/L (300 μg/L)290 μg/L (300 μg/L)
AS-12SAS-12S1,000 μg/L (1,000 μg/L)1,000 μg/L (1,000 μg/L)
BG-5SBG-5S50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-11SGWA-11S110 μg/L (100 μg/L)110 μg/L (100 μg/L)GWA-12SGWA-12S50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-1SGWA-1S50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-2SGWA-2S50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-3SGWA-3S50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-4SGWA-4S190 μg/L (200 J+ μg/L)190 μg/L (200 J+ μg/L)
GWA-6SGWA-6S610 μg/L (620 μg/L)610 μg/L (620 μg/L)
GWA-7SGWA-7S50 U μg/L (38 J+ μg/L)50 U μg/L (38 J+ μg/L)
GWA-8SGWA-8S34 J μg/L (39 J+ μg/L)34 J μg/L (39 J+ μg/L)
GWA-9SGWA-9S50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-10MW-10460 μg/L (460 μg/L)460 μg/L (460 μg/L)
MW-11MW-11230 μg/L (240 μg/L)230 μg/L (240 μg/L)
MW-12MW-1250 U μg/L (33 J+ μg/L)50 U μg/L (33 J+ μg/L)
MW-20SMW-20S50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-21SMW-21S190 μg/L (180 μg/L)190 μg/L (180 μg/L)
MW-22SMW-22S510 μg/L (480 μg/L)510 μg/L (480 μg/L)MW-9MW-928 J μg/L ( ˂ 50 U μg/L)28 J μg/L ( ˂ 50 U μg/L)
S R -1 7 7 9
Non Detect
Non Detect
200200700700
BORON ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-73
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR BORON IS 700 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-25DAB-25D840 μg/L840 μg/L (820 μg/L)(820 μg/L)
AB-30DAB-30D250 μg/L (240 μg/L)250 μg/L (240 μg/L)AB-5DAB-5D500 μg/L (560 μg/L)500 μg/L (560 μg/L)
AS-10DAS-10D29 J μg/L ( ˂ 50 U μg/L)29 J μg/L ( ˂ 50 U μg/L)
AS-2DAS-2D160 μg/L (150 μg/L)160 μg/L (150 μg/L)
AS-4DAS-4D810 μg/L810 μg/L (730 μg/L)(730 μg/L)
AS-6DAS-6D37 J μg/L (33 J μg/L)37 J μg/L (33 J μg/L)
AS-8DAS-8D50 UJ μg/L (50 UJ μg/L)50 UJ μg/L (50 UJ μg/L)
BG-5DBG-5D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-10DGWA-10D298 μg/L (172 μg/L)298 μg/L (172 μg/L)
GWA-11DGWA-11D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-12DGWA-12D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-14DGWA-14D260 μg/L (250 μg/L)260 μg/L (250 μg/L)
GWA-15DGWA-15D86 μg/L86 μg/L (79 μg/L)(79 μg/L)
GWA-1DGWA-1D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-2DGWA-2D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-3DGWA-3D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-4DGWA-4D250 μg/L (240 μg/L)250 μg/L (240 μg/L)
GWA-6DGWA-6D610 μg/L (630 μg/L)610 μg/L (630 μg/L)
GWA-7DGWA-7D50 UJ μg/L ( ˂ 50 U μg/L)50 UJ μg/L ( ˂ 50 U μg/L)
GWA-8DGWA-8D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
GWA-9DGWA-9D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-10DMW-10D460 μg/L (440 μg/L)460 μg/L (440 μg/L)
MW-11DMW-11D87 μg/L87 μg/L (91 μg/L)(91 μg/L)
MW-12DMW-12D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-20DMW-20D35 J μg/L (26 J μg/L)35 J μg/L (26 J μg/L)
MW-21DMW-21D210 μg/L (210 μg/L)210 μg/L (210 μg/L)
MW-23DMW-23D50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-318DMW-318D1,310 μg/L (1,250 μg/L)1,310 μg/L (1,250 μg/L)
MW-9DMW-9D1,000 μg/L (1,000 μg/L)1,000 μg/L (1,000 μg/L)
OW-308DOW-308D380 μg/L (370 μg/L)380 μg/L (370 μg/L)
OW-310DOW-310D1,100 μg/L 1,100 μg/L (980 μg/L)(980 μg/L)
S R -1 7 7 9
7
0
0
7
0
0
700700
7
0
0
7
0
0
N o n D e t e c t
N o n D e t e c t
2 0 0
2 0 0
BORON ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-74
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR BORON IS 700 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-25BRAB-25BR180 μg/L (190 μg/L)180 μg/L (190 μg/L)
AB-30BRAB-30BR320 μg/L (300 μg/L)320 μg/L (300 μg/L)AB-35BRAB-35BR270 μg/L (270 μg/L)270 μg/L (270 μg/L)
AS-8BRAS-8BR45 J μg/L (33 J μg/L)45 J μg/L (33 J μg/L)GWA-5BRGWA-5BR190 J+ μg/L (190 μg/L)190 J+ μg/L (190 μg/L)
MW-22BRMW-22BR670 μg/L (640 μg/L)670 μg/L (640 μg/L)
MW-23BRMW-23BR50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-301BRMW-301BR50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-303BRMW-303BR29 J+ μg/L ( ˂ 50 U μg/L)29 J+ μg/L ( ˂ 50 U μg/L)
MW-306BRMW-306BR920 μg/L920 μg/L (940 μg/L)(940 μg/L)
MW-308BRMW-308BR260 μg/L (260 J+ μg/L)260 μg/L (260 J+ μg/L)
MW-310BRMW-310BR35 J+ μg/L (31 J μg/L)35 J+ μg/L (31 J μg/L)
MW-311BRMW-311BR690 μg/L (700 μg/L)690 μg/L (700 μg/L)MW-314BRMW-314BR500 μg/L (510 μg/L)500 μg/L (510 μg/L)
MW-315BRMW-315BR50 U μg/L ( ˂ 50 U μg/L)50 U μg/L ( ˂ 50 U μg/L)
MW-317BRMW-317BR44 J μg/L ( ˂ 50 U μg/L)44 J μg/L ( ˂ 50 U μg/L)
S R -1 7 7 9
700
700
Non Detect
Non Detect
100
100
BORON ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-75
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR BORON IS 700 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-30SAB-30S0.99 J+ μg/L (0.78 J+ μg/L)0.99 J+ μg/L (0.78 J+ μg/L)
AS-12SAS-12S1.1 J+ μg/L (0.22 J+ μg/L)1.1 J+ μg/L (0.22 J+ μg/L)
BG-5SBG-5S2.6 μg/L2.6 μg/L (1.2 J+ μg/L) (1.2 J+ μg/L)
GWA-11SGWA-11S15.6 μg/L15.6 μg/L (7.7 μg/L)(7.7 μg/L)GWA-12SGWA-12S1.01 μg/L ( ˂ 1 U μg/L)1.01 μg/L ( ˂ 1 U μg/L)
GWA-1SGWA-1S13.8 μg/L13.8 μg/L (2.2 J+ μg/L)(2.2 J+ μg/L)
GWA-2SGWA-2S2.6 μg/L2.6 μg/L (1.1 μg/L) (1.1 μg/L)
GWA-3SGWA-3S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4SGWA-4S3.2 μg/L3.2 μg/L (0.81 μg/L) (0.81 μg/L)
GWA-6SGWA-6S3.6 μg/L3.6 μg/L (0.9 J μg/L) (0.9 J μg/L)
GWA-7SGWA-7S1.9 μg/L (0.95 J+ μg/L)1.9 μg/L (0.95 J+ μg/L)
GWA-8SGWA-8S0.95 μg/L (0.46 J μg/L)0.95 μg/L (0.46 J μg/L)
GWA-9SGWA-9S3.5 μg/L3.5 μg/L (0.27 J+ μg/L) (0.27 J+ μg/L)
MW-10MW-106.6 μg/L6.6 μg/L (3.6 μg/L)(3.6 μg/L)
MW-11MW-111.2 J+ μg/L (0.36 J+ μg/L)1.2 J+ μg/L (0.36 J+ μg/L)
MW-12MW-122.6 J+ μg/L2.6 J+ μg/L (0.41 J+ μg/L) (0.41 J+ μg/L)
MW-20SMW-20S0.22 J μg/L (0.24 J+ μg/L)0.22 J μg/L (0.24 J+ μg/L)
MW-21SMW-21S0.28 J+ μg/L (0.22 J+ μg/L)0.28 J+ μg/L (0.22 J+ μg/L)
MW-22SMW-22S1 μg/L (0.62 μg/L)1 μg/L (0.62 μg/L)MW-9MW-91.8 J+ μg/L 1.8 J+ μg/L (2.5 μg/L)(2.5 μg/L)
S R -1 7 7 9
11
1
0
1
0
1 0 1 0
N o n D e t e c t
N o n D e t e c t
CHROMIUM ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-76
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR CHROMIUM IS 10 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-10DAB-10D4.1 μg/L4.1 μg/L (5.5 μg/L)(5.5 μg/L)
AB-25DAB-25D0.96 μg/L (0.19 J+ μg/L)0.96 μg/L (0.19 J+ μg/L)
AB-30DAB-30D2.7 μg/L2.7 μg/L (2 J+ μg/L)(2 J+ μg/L)
AB-5DAB-5D3.3 μg/L3.3 μg/L (0.2 J+ μg/L) (0.2 J+ μg/L)
AS-10DAS-10D2.4 μg/L2.4 μg/L (2 J μg/L)(2 J μg/L)
AS-2DAS-2D1.4 μg/L (0.58 μg/L)1.4 μg/L (0.58 μg/L)
AS-4DAS-4D3.3 μg/L3.3 μg/L (0.2 J+ μg/L) (0.2 J+ μg/L)
AS-6DAS-6D0.47 J μg/L (0.24 J μg/L)0.47 J μg/L (0.24 J μg/L)
AS-8DAS-8D1.9 J μg/L (1 UJ μg/L)1.9 J μg/L (1 UJ μg/L)
BG-5DBG-5D0.38 J+ μg/L (0.28 J+ μg/L)0.38 J+ μg/L (0.28 J+ μg/L)
GWA-10DGWA-10D9.93 μg/L9.93 μg/L ( ˂ 1 U μg/L) ( ˂ 1 U μg/L)
GWA-11DGWA-11D1.1 J+ μg/L (0.28 J+ μg/L)1.1 J+ μg/L (0.28 J+ μg/L)
GWA-12DGWA-12D2.87 μg/L2.87 μg/L ( ˂ 1 U μg/L) ( ˂ 1 U μg/L)
GWA-14DGWA-14D0.27 J+ μg/L (0.28 J μg/L)0.27 J+ μg/L (0.28 J μg/L)
GWA-15DGWA-15D1.2 J+ μg/L (0.38 J μg/L)1.2 J+ μg/L (0.38 J μg/L)
GWA-1DGWA-1D1.6 J+ μg/L (0.73 μg/L)1.6 J+ μg/L (0.73 μg/L)
GWA-2DGWA-2D5.7 μg/L5.7 μg/L (4.3 μg/L)(4.3 μg/L)
GWA-3DGWA-3D17.7 μg/L17.7 μg/L (12.3 μg/L)(12.3 μg/L)
GWA-4DGWA-4D1.2 J+ μg/L (0.53 μg/L)1.2 J+ μg/L (0.53 μg/L)
GWA-6DGWA-6D1.1 J+ μg/L (0.22 J μg/L)1.1 J+ μg/L (0.22 J μg/L)
GWA-7DGWA-7D0.51 J+ μg/L (0.25 J+ μg/L)0.51 J+ μg/L (0.25 J+ μg/L)
GWA-8DGWA-8D3.2 μg/L3.2 μg/L (0.9 J+ μg/L) (0.9 J+ μg/L)
GWA-9DGWA-9D2.9 μg/L2.9 μg/L (0.25 J μg/L) (0.25 J μg/L)
MW-10DMW-10D0.27 J μg/L (0.28 J+ μg/L)0.27 J μg/L (0.28 J+ μg/L)
MW-11DMW-11D1.5 J+ μg/L (1.1 J+ μg/L)1.5 J+ μg/L (1.1 J+ μg/L)
MW-12DMW-12D1.4 J+ μg/L (0.2 J+ μg/L)1.4 J+ μg/L (0.2 J+ μg/L)
MW-20DMW-20D0.47 J μg/L (0.5 UJ μg/L)0.47 J μg/L (0.5 UJ μg/L)
MW-21DMW-21D0.31 J+ μg/L (0.39 J+ μg/L)0.31 J+ μg/L (0.39 J+ μg/L)
MW-23DMW-23D0.26 J+ μg/L (0.22 J μg/L)0.26 J+ μg/L (0.22 J μg/L)
MW-318DMW-318D2.8 J μg/L2.8 J μg/L (1 UJ μg/L) (1 UJ μg/L)
MW-9DMW-9D7.1 μg/L7.1 μg/L (0.45 J+ μg/L) (0.45 J+ μg/L)
OW-308DOW-308D0.57 J+ μg/L (0.21 J+ μg/L)0.57 J+ μg/L (0.21 J+ μg/L)OW-310DOW-310D0.48 J+ μg/L (0.46 J μg/L)0.48 J+ μg/L (0.46 J μg/L)
S R -1 7 7 9
Non Detect
Non Detect
11
1 0 1 0
CHROMIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-77
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR CHROMIUM IS 10 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-25BRAB-25BR30.1 μg/L30.1 μg/L (4.4 μg/L)(4.4 μg/L)
AB-30BRAB-30BR2.2 J+ μg/L2.2 J+ μg/L (0.86 J+ μg/L) (0.86 J+ μg/L)AB-35BRAB-35BR3.8 μg/L3.8 μg/L (1.5 J+ μg/L) (1.5 J+ μg/L)
AS-8BRAS-8BR4.4 μg/L4.4 μg/L (1.4 J+ μg/L) (1.4 J+ μg/L)GWA-5BRGWA-5BR0.5 UJ μg/L (0.27 J+ μg/L)0.5 UJ μg/L (0.27 J+ μg/L)
MW-22BRMW-22BR0.62 J+ μg/L (0.39 J+ μg/L)0.62 J+ μg/L (0.39 J+ μg/L)
MW-23BRMW-23BR1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
MW-301BRMW-301BR1.2 J+ μg/L 1.2 J+ μg/L (4.4 μg/L)(4.4 μg/L)
MW-303BRMW-303BR6.4 μg/L6.4 μg/L (0.27 J μg/L) (0.27 J μg/L)
MW-306BRMW-306BR1.4 J+ μg/L (0.31 J μg/L)1.4 J+ μg/L (0.31 J μg/L)
MW-308BRMW-308BR1.5 μg/L ( ˂ 0.5 U μg/L)1.5 μg/L ( ˂ 0.5 U μg/L)
MW-310BRMW-310BR2.3 μg/L2.3 μg/L (1.7 J+ μg/L) (1.7 J+ μg/L)
MW-311BRMW-311BR3.3 J+ μg/L3.3 J+ μg/L (0.37 J+ μg/L) (0.37 J+ μg/L)MW-314BRMW-314BR5 μg/L5 μg/L (0.87 J+ μg/L) (0.87 J+ μg/L)
MW-315BRMW-315BR24.8 μg/L24.8 μg/L (0.32 J+ μg/L) (0.32 J+ μg/L)
MW-317BRMW-317BR11 μg/L11 μg/L (8.4 μg/L)(8.4 μg/L)
S R -1 7 7 9 N o n D e t e c t
N o n D e t e c t
1 1
1 01 0
1010
CHROMIUM ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-78
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR CHROMIUM IS 10 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-30SAB-30S29 μg/L29 μg/L (0.5 UJ μg/L) (0.5 UJ μg/L)
AS-12SAS-12S2.2 μg/L2.2 μg/L (2 μg/L)(2 μg/L)
BG-5SBG-5S2.1 μg/L2.1 μg/L ( ˂ 0.5 U μg/L) ( ˂ 0.5 U μg/L)
GWA-11SGWA-11S3.3 μg/L3.3 μg/L (2.9 μg/L)(2.9 μg/L)GWA-12SGWA-12S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-1SGWA-1S3 μg/L3 μg/L (2.4 μg/L)(2.4 μg/L)
GWA-2SGWA-2S2.3 μg/L2.3 μg/L (1.9 μg/L)(1.9 μg/L)
GWA-3SGWA-3S12.2 μg/L12.2 μg/L (11.3 μg/L)(11.3 μg/L)
GWA-4SGWA-4S2.7 μg/L2.7 μg/L (2.7 μg/L)(2.7 μg/L)
GWA-6SGWA-6S1.3 J μg/L1.3 J μg/L ( ˂ 2.5 U μg/L)( ˂ 2.5 U μg/L)
GWA-7SGWA-7S17.7 μg/L17.7 μg/L (19.2 μg/L)(19.2 μg/L)
GWA-8SGWA-8S9.7 μg/L9.7 μg/L (8.6 μg/L)(8.6 μg/L)
GWA-9SGWA-9S9.3 μg/L9.3 μg/L (1.5 μg/L)(1.5 μg/L)
MW-10MW-100.28 J μg/L (0.19 J μg/L)0.28 J μg/L (0.19 J μg/L)
MW-11MW-1129.2 μg/L29.2 μg/L (28.5 μg/L)(28.5 μg/L)
MW-12MW-1210.1 μg/L10.1 μg/L (9.9 μg/L)(9.9 μg/L)
MW-20SMW-20S2.1 μg/L2.1 μg/L (2.2 μg/L)(2.2 μg/L)
MW-21SMW-21S0.79 μg/L (0.72 μg/L)0.79 μg/L (0.72 μg/L)
MW-22SMW-22S0.37 J μg/L (0.27 J μg/L)0.37 J μg/L (0.27 J μg/L)MW-9MW-96.4 μg/L6.4 μg/L (5.6 μg/L)(5.6 μg/L)
S R -1 7 7 9 1 01 0
5 5
1 0 1 0
1 01 0
1 0 1 0 1 1
N
o
n
D
ete
ct
N
o
n
D
ete
ct
COBALT ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-79
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR COBALT IS 1 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-10DAB-10D1.1 μg/L1.1 μg/L (0.96 μg/L) (0.96 μg/L)
AB-25DAB-25D0.3 J μg/L (0.25 J μg/L)0.3 J μg/L (0.25 J μg/L)
AB-30DAB-30D0.3 J μg/L (0.18 J μg/L)0.3 J μg/L (0.18 J μg/L)
AB-5DAB-5D1 μg/L 1 μg/L (1.1 μg/L)(1.1 μg/L)
AS-10DAS-10D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AS-2DAS-2D2.1 μg/L2.1 μg/L (1.6 μg/L)(1.6 μg/L)
AS-4DAS-4D4 μg/L4 μg/L (2.4 μg/L)(2.4 μg/L)
AS-6DAS-6D1.1 μg/L1.1 μg/L (1.1 μg/L)(1.1 μg/L)
AS-8DAS-8D1 UJ μg/L (1 UJ μg/L)1 UJ μg/L (1 UJ μg/L)
BG-5DBG-5D1 μg/L (0.91 μg/L)1 μg/L (0.91 μg/L)
GWA-10DGWA-10D3.45 μg/L3.45 μg/L (2.11 μg/L)(2.11 μg/L)
GWA-11DGWA-11D1.4 μg/L1.4 μg/L (1.2 μg/L)(1.2 μg/L)GWA-12DGWA-12D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)GWA-14DGWA-14D0.23 J μg/L (0.2 J μg/L)0.23 J μg/L (0.2 J μg/L)
GWA-15DGWA-15D0.24 J μg/L (0.14 J μg/L)0.24 J μg/L (0.14 J μg/L)
GWA-1DGWA-1D0.3 J μg/L ( ˂ 0.5 U μg/L)0.3 J μg/L ( ˂ 0.5 U μg/L)
GWA-2DGWA-2D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-3DGWA-3D1.02 μg/L1.02 μg/L ( ˂ 1 U μg/L) ( ˂ 1 U μg/L)
GWA-4DGWA-4D0.35 J μg/L (0.17 J μg/L)0.35 J μg/L (0.17 J μg/L)
GWA-6DGWA-6D0.51 μg/L (0.45 J μg/L)0.51 μg/L (0.45 J μg/L)
GWA-7DGWA-7D2.8 μg/L2.8 μg/L (2.8 μg/L)(2.8 μg/L)
GWA-8DGWA-8D0.26 J μg/L (0.14 J μg/L)0.26 J μg/L (0.14 J μg/L)
GWA-9DGWA-9D1.2 μg/L1.2 μg/L (0.51 μg/L) (0.51 μg/L)
MW-10DMW-10D0.57 μg/L (0.59 μg/L)0.57 μg/L (0.59 μg/L)
MW-11DMW-11D0.22 J μg/L ( ˂ 0.5 U μg/L)0.22 J μg/L ( ˂ 0.5 U μg/L)
MW-12DMW-12D4.8 μg/L4.8 μg/L (4.5 μg/L)(4.5 μg/L)
MW-20DMW-20D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-21DMW-21D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-23DMW-23D0.25 J μg/L (0.22 J μg/L)0.25 J μg/L (0.22 J μg/L)
MW-318DMW-318D13 J μg/L13 J μg/L (12.9 J μg/L)(12.9 J μg/L)
MW-9DMW-9D1.5 μg/L1.5 μg/L (0.28 J μg/L) (0.28 J μg/L)
OW-308DOW-308D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)OW-310DOW-310D1.2 μg/L1.2 μg/L (1.2 μg/L)(1.2 μg/L)
S R -1 7 7 9
1010
11
1 1
11
1 1
N o n D e t e c tNon D e t e c t
COBALT ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-80
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR COBALT IS 1 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-25BRAB-25BR0.27 J μg/L ( ˂ 0.5 U μg/L)0.27 J μg/L ( ˂ 0.5 U μg/L)
AB-30BRAB-30BR0.29 J μg/L ( ˂ 0.5 U μg/L)0.29 J μg/L ( ˂ 0.5 U μg/L)AB-35BRAB-35BR0.26 J μg/L (0.24 J μg/L)0.26 J μg/L (0.24 J μg/L)
AS-8BRAS-8BR0.15 J μg/L ( ˂ 0.5 U μg/L)0.15 J μg/L ( ˂ 0.5 U μg/L)GWA-5BRGWA-5BR0.32 J μg/L (0.26 J μg/L)0.32 J μg/L (0.26 J μg/L)
MW-22BRMW-22BR0.15 J μg/L ( ˂ 0.5 U μg/L)0.15 J μg/L ( ˂ 0.5 U μg/L)
MW-23BRMW-23BR1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
MW-301BRMW-301BR0.26 J μg/L (0.19 J μg/L)0.26 J μg/L (0.19 J μg/L)
MW-303BRMW-303BR0.95 μg/L (0.18 J μg/L)0.95 μg/L (0.18 J μg/L)
MW-306BRMW-306BR0.5 U μg/L (0.45 J μg/L)0.5 U μg/L (0.45 J μg/L)
MW-308BRMW-308BR0.6 μg/L (0.32 J μg/L)0.6 μg/L (0.32 J μg/L)
MW-310BRMW-310BR0.2 J μg/L ( ˂ 0.5 U μg/L)0.2 J μg/L ( ˂ 0.5 U μg/L)
MW-311BRMW-311BR0.84 μg/L (0.52 μg/L)0.84 μg/L (0.52 μg/L)MW-314BRMW-314BR0.34 J μg/L ( ˂ 0.5 U μg/L)0.34 J μg/L ( ˂ 0.5 U μg/L)
MW-315BRMW-315BR2.2 μg/L2.2 μg/L (1.2 J+ μg/L)(1.2 J+ μg/L)
MW-317BRMW-317BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
S R -1 7 7 9
1 1
N o n D e t e c t
N o n D e t e c t
COBALT ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-81
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR COBALT IS 1 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-30SAB-30S110 J μg/L 110 J μg/L (39 J μg/L)(39 J μg/L)
AS-12SAS-12S928 μg/L928 μg/L (82.6 μg/L)(82.6 μg/L)
BG-5SBG-5S890 μg/L890 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-11SGWA-11S227 μg/L (134 μg/L)227 μg/L (134 μg/L)GWA-12SGWA-12S185 μg/L ( ˂ 10 U μg/L)185 μg/L ( ˂ 10 U μg/L)
GWA-1SGWA-1S1,200 μg/L 1,200 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-2SGWA-2S909 μg/L909 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-3SGWA-3S190 μg/L (14 μg/L)190 μg/L (14 μg/L)
GWA-4SGWA-4S530 μg/L530 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-6SGWA-6S21,200 μg/L (25,300 μg/L)21,200 μg/L (25,300 μg/L)
GWA-7SGWA-7S310 μg/L310 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-8SGWA-8S190 μg/L 190 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-9SGWA-9S5,100 μg/L5,100 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-10MW-1050 U μg/L50 U μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-11MW-11400 μg/L400 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-12MW-123,600 μg/L (1,900 μg/L)3,600 μg/L (1,900 μg/L)
MW-20SMW-20S2,800 μg/L (2,500 μg/L)2,800 μg/L (2,500 μg/L)
MW-21SMW-21S50 U μg/L50 U μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-22SMW-22S15,600 μg/L (14,100 μg/L)15,600 μg/L (14,100 μg/L)MW-9MW-9990 μg/L990 μg/L (340 μg/L)(340 μg/L)
S R -1 7 7 9
N o n D e t e c t
N o n D e t e c t
10001000
3000
3000
1
0
0
0
1
0
0
0
1 0 0 0 01000 0
300300
300
300
IRON ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-82
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR IRON IS 300 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
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&<
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D D a a n n R R i i v v e e r r
AB-10DAB-10D34 J μg/L34 J μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
AB-25DAB-25D93 μg/L93 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
AB-30DAB-30D97 μg/L97 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
AB-5DAB-5D140 μg/L 140 μg/L (63 μg/L)(63 μg/L)
AS-10DAS-10D35.6 J μg/L35.6 J μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
AS-2DAS-2D2,900 μg/L (1,800 μg/L)2,900 μg/L (1,800 μg/L)
AS-4DAS-4D4,480 μg/L4,480 μg/L (158 μg/L) (158 μg/L)
AS-6DAS-6D3,920 μg/L (2,880 μg/L)3,920 μg/L (2,880 μg/L)
AS-8DAS-8D2,900 μg/L (1,160 μg/L)2,900 μg/L (1,160 μg/L)
BG-5DBG-5D240 μg/L (150 μg/L)240 μg/L (150 μg/L)
GWA-10DGWA-10D6,040 μg/L6,040 μg/L (146 μg/L) (146 μg/L)
GWA-11DGWA-11D1,700 μg/L (1,180 μg/L)1,700 μg/L (1,180 μg/L)GWA-12DGWA-12D54 μg/L54 μg/L (386 μg/L)(386 μg/L)GWA-14DGWA-14D140 μg/L 140 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-15DGWA-15D840 μg/L840 μg/L (26 J μg/L) (26 J μg/L)
GWA-1DGWA-1D719 μg/L719 μg/L (136 μg/L) (136 μg/L)
GWA-2DGWA-2D86.7 μg/L86.7 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-3DGWA-3D411 μg/L411 μg/L (101 μg/L) (101 μg/L)
GWA-4DGWA-4D370 J+ μg/L370 J+ μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-6DGWA-6D7,400 μg/L7,400 μg/L (7,400 μg/L)(7,400 μg/L)
GWA-7DGWA-7D1,610 μg/L (1,390 μg/L)1,610 μg/L (1,390 μg/L)
GWA-8DGWA-8D413 μg/L413 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
GWA-9DGWA-9D3,290 μg/L (1,390 μg/L)3,290 μg/L (1,390 μg/L)
MW-10DMW-10D170 μg/L (130 μg/L)170 μg/L (130 μg/L)
MW-11DMW-11D850 μg/L850 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-12DMW-12D6,100 μg/L6,100 μg/L (4,800 μg/L)(4,800 μg/L)
MW-20DMW-20D200 μg/L 200 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-21DMW-21D550 μg/L550 μg/L (690 μg/L)(690 μg/L)
MW-23DMW-23D110 μg/L 110 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-318DMW-318D1,150 μg/L 1,150 μg/L (588 μg/L)(588 μg/L)
MW-9DMW-9D2,600 μg/L 2,600 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
OW-308DOW-308D36,400 μg/L36,400 μg/L (32,500 μg/L)(32,500 μg/L)OW-310DOW-310D1,400 μg/L (1,300 μg/L)1,400 μg/L (1,300 μg/L)
S R -1 7 7 9
N
o
n

D
e
t
e
ct
N
o
n

D
e
t
e
ct
1
0
0
0
1
0
0
0
5000
5000
1 0 0 0100 0
5 0 0 0
5 0 0 0
3
0
0
3
0
0
IRON ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-83
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR IRON IS 300 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
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&<
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&<
&<
D D a a n n R R i i v v e e r r
AB-25BRAB-25BR150 μg/L 150 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
AB-30BRAB-30BR490 μg/L490 μg/L (77 μg/L)(77 μg/L)AB-35BRAB-35BR150 μg/L 150 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
AS-8BRAS-8BR466 μg/L466 μg/L (206 μg/L) (206 μg/L)GWA-5BRGWA-5BR307 μg/L307 μg/L (210 μg/L) (210 μg/L)
MW-22BRMW-22BR760 μg/L760 μg/L (620 μg/L)(620 μg/L)
MW-23BRMW-23BR138 μg/L 138 μg/L (57 μg/L)(57 μg/L)
MW-301BRMW-301BR383 J+ μg/L383 J+ μg/L (146 μg/L) (146 μg/L)
MW-303BRMW-303BR2,760 μg/L (2,260 μg/L)2,760 μg/L (2,260 μg/L)
MW-306BRMW-306BR623 J μg/L623 J μg/L (582 μg/L)(582 μg/L)
MW-308BRMW-308BR1,910 μg/L (1,190 μg/L)1,910 μg/L (1,190 μg/L)
MW-310BRMW-310BR377 μg/L377 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-311BRMW-311BR1,200 μg/L 1,200 μg/L (380 μg/L)(380 μg/L)MW-314BRMW-314BR380 μg/L380 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
MW-315BRMW-315BR1,300 μg/L 1,300 μg/L (86 μg/L)(86 μg/L)
MW-317BRMW-317BR128 μg/L 128 μg/L ( ˂ 50 U μg/L)( ˂ 50 U μg/L)
S R -1 7 7 9 N o n D e t e c t
N o n D e t e c t
2000
2000
1
0
0
0
1
0
0
0
1000
1000
300
300
3 0 0 3 0 0
3 0 0 3 0 0
IRON ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-84
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR IRON IS 300 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
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&<
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&<&<
&<
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D D a a n n R R i i v v e e r r
AB-30SAB-30S1,500 μg/L (1,600 μg/L)1,500 μg/L (1,600 μg/L)
AS-12SAS-12S430 μg/L (420 μg/L)430 μg/L (420 μg/L)
BG-5SBG-5S110 μg/L (21 μg/L)110 μg/L (21 μg/L)
GWA-11SGWA-11S1,200 μg/L (1,200 μg/L)1,200 μg/L (1,200 μg/L)GWA-12SGWA-12S150 μg/L (102 μg/L)150 μg/L (102 μg/L)
GWA-1SGWA-1S120 μg/L (100 μg/L)120 μg/L (100 μg/L)
GWA-2SGWA-2S94 μg/L94 μg/L (88 μg/L)(88 μg/L)
GWA-3SGWA-3S533 μg/L533 μg/L (480 μg/L) (480 μg/L)
GWA-4SGWA-4S590 μg/L590 μg/L (560 μg/L)(560 μg/L)
GWA-6SGWA-6S3,700 μg/L (3,900 μg/L)3,700 μg/L (3,900 μg/L)
GWA-7SGWA-7S950 μg/L950 μg/L (1,000 μg/L) (1,000 μg/L)
GWA-8SGWA-8S1,700 μg/L (2,700 μg/L)1,700 μg/L (2,700 μg/L)
GWA-9SGWA-9S220 μg/L (36 μg/L)220 μg/L (36 μg/L)
MW-10MW-1013 μg/L ( ˂ 5 U μg/L)13 μg/L ( ˂ 5 U μg/L)
MW-11MW-11880 μg/L880 μg/L (890 μg/L)(890 μg/L)
MW-12MW-12450 μg/L (440 μg/L)450 μg/L (440 μg/L)
MW-20SMW-20S820 μg/L820 μg/L (840 μg/L)(840 μg/L)
MW-21SMW-21S670 μg/L670 μg/L (640 μg/L)(640 μg/L)
MW-22SMW-22S950 μg/L950 μg/L (850 μg/L)(850 μg/L)MW-9MW-91,000 μg/L (1,600 μg/L)1,000 μg/L (1,600 μg/L)
S R -1 7 7 9
N o n D e t e c t
N o n D e t e c t
3 0 0 0
3 0 0 01000
1 0 0 0
5
0
0
5
0
0
1 0 0 010 0 0
1
0
0
0
1
0
0
0
5
0
5
0
MANGANESE ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-85
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR MANGANESE IS 50 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
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&<
&<
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&<
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&<
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&<
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&<
&<
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&<
&<&<
&<
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D D a a n n R R i i v v e e r r
AB-10DAB-10D26 μg/L ( ˂ 5 U μg/L)26 μg/L ( ˂ 5 U μg/L)
AB-25DAB-25D180 μg/L (190 μg/L)180 μg/L (190 μg/L)
AB-30DAB-30D430 μg/L (280 μg/L)430 μg/L (280 μg/L)
AB-5DAB-5D1,000 μg/L (1,000 μg/L)1,000 μg/L (1,000 μg/L)
AS-10DAS-10D5 U μg/L ( ˂ 5 U μg/L)5 U μg/L ( ˂ 5 U μg/L)
AS-2DAS-2D1,500 μg/L (1,500 μg/L)1,500 μg/L (1,500 μg/L)
AS-4DAS-4D770 μg/L770 μg/L (700 μg/L)(700 μg/L)
AS-6DAS-6D270 μg/L (260 μg/L)270 μg/L (260 μg/L)
AS-8DAS-8D1,140 μg/L (1,100 μg/L)1,140 μg/L (1,100 μg/L)
BG-5DBG-5D910 μg/L910 μg/L (920 μg/L)(920 μg/L)
GWA-10DGWA-10D509 μg/L509 μg/L (453 μg/L) (453 μg/L)
GWA-11DGWA-11D810 μg/L810 μg/L (730 μg/L)(730 μg/L)GWA-12DGWA-12D49 μg/L 49 μg/L (60 μg/L)(60 μg/L)GWA-14DGWA-14D300 μg/L (290 μg/L)300 μg/L (290 μg/L)
GWA-15DGWA-15D270 μg/L (260 μg/L)270 μg/L (260 μg/L)
GWA-1DGWA-1D680 μg/L680 μg/L (600 μg/L)(600 μg/L)
GWA-2DGWA-2D25 μg/L ( ˂ 5 U μg/L)25 μg/L ( ˂ 5 U μg/L)
GWA-3DGWA-3D122 μg/L (107 μg/L)122 μg/L (107 μg/L)
GWA-4DGWA-4D33 μg/L (23 μg/L)33 μg/L (23 μg/L)
GWA-6DGWA-6D1,300 μg/L (1,300 μg/L)1,300 μg/L (1,300 μg/L)
GWA-7DGWA-7D1,000 μg/L (1,100 μg/L)1,000 μg/L (1,100 μg/L)
GWA-8DGWA-8D1,200 μg/L (1,000 μg/L)1,200 μg/L (1,000 μg/L)
GWA-9DGWA-9D640 μg/L640 μg/L (590 μg/L)(590 μg/L)
MW-10DMW-10D1,000 μg/L 1,000 μg/L (990 μg/L)(990 μg/L)
MW-11DMW-11D130 μg/L (100 μg/L)130 μg/L (100 μg/L)
MW-12DMW-12D1,400 μg/L (1,300 μg/L)1,400 μg/L (1,300 μg/L)
MW-20DMW-20D500 μg/L500 μg/L (470 μg/L) (470 μg/L)
MW-21DMW-21D920 μg/L920 μg/L (940 μg/L)(940 μg/L)
MW-23DMW-23D280 μg/L (300 μg/L)280 μg/L (300 μg/L)
MW-318DMW-318D577 μg/L577 μg/L (607 μg/L)(607 μg/L)
MW-9DMW-9D600 μg/L600 μg/L (540 μg/L)(540 μg/L)
OW-308DOW-308D580 μg/L580 μg/L (580 μg/L)(580 μg/L)OW-310DOW-310D1,200 μg/L (1,300 μg/L)1,200 μg/L (1,300 μg/L)
S R -1 7 7 9
N
o
n

D
e
t
e
c
t
N
o
n

D
e
t
e
c
t
5 0 0 5 0 0
5 0 050 0
1 0 0 0
1 0 0 0
1
0
0
0
1
0
0
0
10001000
1 0 0 0
1 0 0 0
1 0 0 01000
5 0 5 0
MANGANESE ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-86
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR MANGANESE IS 50 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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D D a a n n R R i i v v e e r r
AB-25BRAB-25BR7.8 μg/L7.8 μg/L (4.1 J μg/L) (4.1 J μg/L)
AB-30BRAB-30BR370 μg/L (350 μg/L)370 μg/L (350 μg/L)AB-35BRAB-35BR410 μg/L (390 μg/L)410 μg/L (390 μg/L)
AS-8BRAS-8BR910 μg/L910 μg/L (790 μg/L)(790 μg/L)GWA-5BRGWA-5BR630 μg/L630 μg/L (620 μg/L)(620 μg/L)
MW-22BRMW-22BR270 μg/L (260 μg/L)270 μg/L (260 μg/L)
MW-23BRMW-23BR32 μg/L (31 μg/L)32 μg/L (31 μg/L)
MW-301BRMW-301BR410 μg/L (400 μg/L)410 μg/L (400 μg/L)
MW-303BRMW-303BR500 μg/L500 μg/L (510 μg/L)(510 μg/L)
MW-306BRMW-306BR920 μg/L920 μg/L (930 μg/L)(930 μg/L)
MW-308BRMW-308BR2,200 μg/L (2,000 μg/L)2,200 μg/L (2,000 μg/L)
MW-310BRMW-310BR110 μg/L (120 μg/L)110 μg/L (120 μg/L)
MW-311BRMW-311BR580 μg/L580 μg/L (570 μg/L)(570 μg/L)MW-314BRMW-314BR25 μg/L (15 μg/L)25 μg/L (15 μg/L)
MW-315BRMW-315BR1,800 μg/L (1,500 μg/L)1,800 μg/L (1,500 μg/L)
MW-317BRMW-317BR8.7 μg/L8.7 μg/L ( ˂ 10 U μg/L) ( ˂ 10 U μg/L)
S R -1 7 7 9 N o n D e t e c t
N o n D e t e c t
1 0 0 0100 0
5 0 050 0
5 0 0
5 0 0
5 0 050 0
5 05 0
MANGANESE ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-87
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR MANGANESE IS 50 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
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&<
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&<&<
&<
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&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-30SAB-30S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AS-12SAS-12S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
BG-5SBG-5S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-11SGWA-11S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)GWA-12SGWA-12S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-1SGWA-1S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-2SGWA-2S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-3SGWA-3S1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4SGWA-4S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-6SGWA-6S2.5 U μg/L ( ˂ 2.5 U μg/L)2.5 U μg/L ( ˂ 2.5 U μg/L)
GWA-7SGWA-7S0.86 μg/L (0.62 μg/L)0.86 μg/L (0.62 μg/L)
GWA-8SGWA-8S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-9SGWA-9S0.56 μg/L ( ˂ 0.5 U μg/L)0.56 μg/L ( ˂ 0.5 U μg/L)
MW-10MW-100.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-11MW-110.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-12MW-120.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-20SMW-20S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-21SMW-21S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-22SMW-22S0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)MW-9MW-90.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
S R -1 7 7 9
0 .50 .5
0 .5 0 .5
N o n D e t e c t
N o n D e t e c t
SELENIUM ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-88
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR SELENIUM IS 20 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
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&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-10DAB-10D0.22 J μg/L (0.38 J μg/L)0.22 J μg/L (0.38 J μg/L)
AB-25DAB-25D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AB-30DAB-30D0.5 U μg/L (0.28 J μg/L)0.5 U μg/L (0.28 J μg/L)
AB-5DAB-5D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AS-10DAS-10D35.3 μg/L35.3 μg/L (28.8 μg/L)(28.8 μg/L)
AS-2DAS-2D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AS-4DAS-4D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AS-6DAS-6D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
AS-8DAS-8D1 UJ μg/L (1 UJ μg/L)1 UJ μg/L (1 UJ μg/L)
BG-5DBG-5D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-10DGWA-10D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-11DGWA-11D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-12DGWA-12D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)GWA-14DGWA-14D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-15DGWA-15D0.24 J μg/L (0.22 J μg/L)0.24 J μg/L (0.22 J μg/L)
GWA-1DGWA-1D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-2DGWA-2D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-3DGWA-3D1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
GWA-4DGWA-4D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-6DGWA-6D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-7DGWA-7D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
GWA-8DGWA-8D1.1 μg/L (0.69 μg/L)1.1 μg/L (0.69 μg/L)
GWA-9DGWA-9D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-10DMW-10D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-11DMW-11D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-12DMW-12D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-20DMW-20D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-21DMW-21D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-23DMW-23D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-318DMW-318D1.03 J μg/L (1 UJ μg/L)1.03 J μg/L (1 UJ μg/L)
MW-9DMW-9D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
OW-308DOW-308D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
OW-310DOW-310D0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
S R -1 7 7 9
1 010
55
2 020
N
o
n

D
e
t
e
c
t
N
o
n

D
e
t
e
c
t
SELENIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-89
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR SELENIUM IS 20 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-25BRAB-25BR0.64 μg/L (0.67 μg/L)0.64 μg/L (0.67 μg/L)
AB-30BRAB-30BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)AB-35BRAB-35BR0.67 μg/L (0.32 J μg/L)0.67 μg/L (0.32 J μg/L)
AS-8BRAS-8BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)GWA-5BRGWA-5BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-22BRMW-22BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-23BRMW-23BR1 U μg/L ( ˂ 1 U μg/L)1 U μg/L ( ˂ 1 U μg/L)
MW-301BRMW-301BR0.39 J μg/L (0.32 J μg/L)0.39 J μg/L (0.32 J μg/L)
MW-303BRMW-303BR0.33 J μg/L ( ˂ 0.5 U μg/L)0.33 J μg/L ( ˂ 0.5 U μg/L)
MW-306BRMW-306BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-308BRMW-308BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-310BRMW-310BR0.21 J μg/L ( ˂ 0.5 U μg/L)0.21 J μg/L ( ˂ 0.5 U μg/L)
MW-311BRMW-311BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)MW-314BRMW-314BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-315BRMW-315BR0.5 U μg/L ( ˂ 0.5 U μg/L)0.5 U μg/L ( ˂ 0.5 U μg/L)
MW-317BRMW-317BR0.75 μg/L (0.53 μg/L)0.75 μg/L (0.53 μg/L)
S R -1 7 7 9
N
o
n

D
e
t
e
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t
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D
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0
.
5
0
.
5
0
.
5
0
.
5
SELENIUM ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-90
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR SELENIUM IS 20 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-30SAB-30S81,500 μg/L81,500 μg/L
AS-12SAS-12S71,700 μg/L71,700 μg/L
BG-5SBG-5S41,300 μg/L41,300 μg/L
GWA-11SGWA-11S4,400 μg/L4,400 μg/LGWA-12SGWA-12S41,000 μg/L41,000 μg/L
GWA-1SGWA-1S15,100 J+ μg/L15,100 J+ μg/L
GWA-2SGWA-2S640 J μg/L640 J μg/L
GWA-3SGWA-3S73,000 μg/L73,000 μg/L
GWA-4SGWA-4S38,200 μg/L38,200 μg/L
GWA-6SGWA-6S10,900 μg/L10,900 μg/L
GWA-7SGWA-7S176,000 μg/L176,000 μg/L
GWA-8SGWA-8S181,000 μg/L181,000 μg/L
GWA-9SGWA-9S650 J μg/L650 J μg/L
MW-10MW-1026,800 μg/L26,800 μg/L
MW-11MW-1148,100 μg/L48,100 μg/L
MW-12MW-1210,200 μg/L10,200 μg/L
MW-20SMW-20S3,800 μg/L3,800 μg/L
MW-21SMW-21S37,000 μg/L37,000 μg/L
MW-22SMW-22S800 J μg/L800 J μg/LMW-9MW-936,100 μg/L36,100 μg/L
5 0 ,0 0 0
5 0 ,0 0 0
1 2 5 ,0 0 0
1 2 5 ,0 0 0
50,00050,000
1
2
5
,
0
0
0
1
2
5
,
0
0
0
SULFATE ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
ISOCONCENTRATION CONTOUR (µg/L)
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-91
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR SULFATE IS 250000 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
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D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-10DAB-10D33,700 μg/L33,700 μg/L
AB-25DAB-25D83,000 μg/L83,000 μg/L
AB-30DAB-30D71,500 μg/L71,500 μg/L
AB-5DAB-5D45,200 μg/L45,200 μg/L
AS-10DAS-10D43,900 μg/L43,900 μg/L
AS-2DAS-2D90,600 μg/L90,600 μg/L
AS-4DAS-4D44,900 μg/L44,900 μg/L
AS-6DAS-6D15,100 μg/L15,100 μg/L
AS-8DAS-8D25,000 μg/L25,000 μg/L
BG-5DBG-5D39,400 μg/L39,400 μg/L
GWA-10DGWA-10D3,300 μg/L3,300 μg/L
GWA-11DGWA-11D37,100 μg/L37,100 μg/LGWA-12DGWA-12D16,000 μg/L16,000 μg/L GWA-14DGWA-14D88,500 μg/L88,500 μg/L
GWA-15DGWA-15D307,000 μg/L307,000 μg/L
GWA-1DGWA-1D4,200 μg/L4,200 μg/L
GWA-2DGWA-2D3,100 μg/L3,100 μg/L
GWA-3DGWA-3D6,200 μg/L6,200 μg/L
GWA-4DGWA-4D47,800 μg/L47,800 μg/L
GWA-6DGWA-6D88,700 μg/L88,700 μg/L
GWA-7DGWA-7D98,200 μg/L98,200 μg/L
GWA-8DGWA-8D368,000 μg/L368,000 μg/L
GWA-9DGWA-9D4,200 μg/L4,200 μg/L
MW-10DMW-10D41,300 μg/L41,300 μg/L
MW-11DMW-11D70,000 μg/L70,000 μg/L
MW-12DMW-12D25,400 μg/L25,400 μg/L
MW-20DMW-20D5,700 μg/L5,700 μg/L
MW-21DMW-21D274,000 μg/L274,000 μg/L
MW-23DMW-23D29,800 μg/L29,800 μg/L
MW-318DMW-318D91,000 μg/L91,000 μg/L
MW-9DMW-9D87,300 μg/L87,300 μg/L
OW-308DOW-308D115,000 μg/L115,000 μg/L
OW-310DOW-310D21,600 μg/L21,600 μg/L
125,000
125,0005
0,0
0
0
5
0,0
0
0
5
0
,
0
0
0
5
0
,
0
0
0
50,00050,000
250,000
250,000
2 5 0 ,0 0 0
2 5 0 ,0 0 0
SULFATE ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-92
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR SULFATE IS 250000 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
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&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
AB-25BRAB-25BR99,000 μg/L99,000 μg/L
AB-30BRAB-30BR96,700 μg/L96,700 μg/LAB-35BRAB-35BR129,000 μg/L129,000 μg/L
AS-8BRAS-8BR74,500 μg/L74,500 μg/L GWA-5BRGWA-5BR416,000 μg/L416,000 μg/L
MW-22BRMW-22BR84,100 μg/L84,100 μg/L
MW-23BRMW-23BR12,000 μg/L12,000 μg/L
MW-301BRMW-301BR3,300 μg/L3,300 μg/L
MW-303BRMW-303BR14,900 μg/L14,900 μg/L
MW-306BRMW-306BR187,000 μg/L187,000 μg/L
MW-308BRMW-308BR323,000 μg/L323,000 μg/L
MW-310BRMW-310BR14,100 μg/L14,100 μg/L
MW-311BRMW-311BR53,000 μg/L53,000 μg/LMW-314BRMW-314BR95,800 μg/L95,800 μg/L
MW-315BRMW-315BR38,400 μg/L38,400 μg/L
MW-317BRMW-317BR15,500 μg/L15,500 μg/L
S R -1 7 7 9
2 5 0 ,0 0 0250,0 0 0
1 2 5 ,0 0 0125,0 0 0
5 0 ,0 0 0
5 0 ,0 0 0
1 2 5 ,0 0 0125,0 0 0
SULFATE ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-93
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR SULFATE IS 250000 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-30SAB-30S183,000 μg/L183,000 μg/L
AS-12SAS-12S350,000 μg/L350,000 μg/L
BG-5SBG-5S175,000 μg/L175,000 μg/L
GWA-11SGWA-11S10,000 U μg/L10,000 U μg/LGWA-12SGWA-12S110,000 μg/L110,000 μg/L
GWA-1SGWA-1S105,000 μg/L105,000 μg/L
GWA-2SGWA-2S37,000 μg/L37,000 μg/L
GWA-3SGWA-3S110,000 μg/L110,000 μg/L
GWA-4SGWA-4S152,000 μg/L152,000 μg/L
GWA-6SGWA-6S432,000 μg/L432,000 μg/L
GWA-7SGWA-7S318,000 μg/L318,000 μg/L
GWA-8SGWA-8S397,000 μg/L397,000 μg/L
GWA-9SGWA-9S161,000 μg/L161,000 μg/L
MW-10MW-10233,000 μg/L233,000 μg/L
MW-11MW-11118,000 μg/L118,000 μg/L
MW-12MW-1272,000 μg/L72,000 μg/L
MW-20SMW-20S121,000 μg/L121,000 μg/L
MW-21SMW-21S137,000 μg/L137,000 μg/L
MW-22SMW-22S192,000 μg/L192,000 μg/LMW-9MW-9113,000 μg/L113,000 μg/L
2
5
0
0
0
0
2
5
0
0
0
0
1
2
5
0
0
0
1
2
5
0
0
0
TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
ISOCONCENTRATION CONTOUR (µg/L)
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-94
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR TOTAL DISSOLVED SOLIDS IS 500000 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
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&<
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&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-10DAB-10D272,000 μg/L272,000 μg/L
AB-25DAB-25D258,000 μg/L258,000 μg/L
AB-30DAB-30D249,000 μg/L249,000 μg/L
AB-5DAB-5D247,000 μg/L247,000 μg/L
AS-10DAS-10D220,000 J- μg/L220,000 J- μg/L
AS-2DAS-2D405,000 μg/L405,000 μg/L
AS-4DAS-4D410,000 J- μg/L410,000 J- μg/L
AS-6DAS-6D220,000 J- μg/L220,000 J- μg/L
AS-8DAS-8D250,000 μg/L250,000 μg/L
BG-5DBG-5D214,000 μg/L214,000 μg/L
GWA-10DGWA-10D220,000 μg/L220,000 μg/L
GWA-11DGWA-11D240,000 J- μg/L240,000 J- μg/LGWA-12DGWA-12D250,000 μg/L250,000 μg/L GWA-14DGWA-14D325,000 μg/L325,000 μg/L
GWA-15DGWA-15D705,000 μg/L705,000 μg/L
GWA-1DGWA-1D220,000 μg/L220,000 μg/L
GWA-2DGWA-2D10,000 U μg/L10,000 U μg/L
GWA-3DGWA-3D160,000 μg/L160,000 μg/L
GWA-4DGWA-4D188,000 μg/L188,000 μg/L
GWA-6DGWA-6D302,000 μg/L302,000 μg/L
GWA-7DGWA-7D242,000 μg/L242,000 μg/L
GWA-8DGWA-8D690,000 J- μg/L690,000 J- μg/L
GWA-9DGWA-9D113,000 μg/L113,000 μg/L
MW-10DMW-10D214,000 μg/L214,000 μg/L
MW-11DMW-11D304,000 μg/L304,000 μg/L
MW-12DMW-12D168,000 μg/L168,000 μg/L
MW-20DMW-20D187,000 μg/L187,000 μg/L
MW-21DMW-21D639,000 μg/L639,000 μg/L
MW-23DMW-23D252,000 μg/L252,000 μg/L
MW-318DMW-318D270,000 μg/L270,000 μg/L
MW-9DMW-9D238,000 μg/L238,000 μg/L
OW-308DOW-308D264,000 μg/L264,000 μg/L
OW-310DOW-310D368,000 μg/L368,000 μg/L
250000250000
5 0 0 0 0 0
5 0 0 0 0 0
TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-95
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR TOTAL DISSOLVED SOLIDS IS 500000 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
&<
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&<
&<
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&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-25BRAB-25BR296,000 μg/L296,000 μg/L
AB-30BRAB-30BR327,000 μg/L327,000 μg/LAB-35BRAB-35BR410,000 μg/L410,000 μg/L
AS-8BRAS-8BR370,000 μg/L370,000 μg/L GWA-5BRGWA-5BR873,000 μg/L873,000 μg/L
MW-22BRMW-22BR240,000 μg/L240,000 μg/L
MW-23BRMW-23BR270,000 μg/L270,000 μg/L
MW-301BRMW-301BR210,000 μg/L210,000 μg/L
MW-303BRMW-303BR272,000 μg/L272,000 μg/L
MW-306BRMW-306BR530,000 μg/L530,000 μg/L
MW-308BRMW-308BR844,000 μg/L844,000 μg/L
MW-310BRMW-310BR183,000 μg/L183,000 μg/L
MW-311BRMW-311BR318,000 μg/L318,000 μg/LMW-314BRMW-314BR261,000 μg/L261,000 μg/L
MW-315BRMW-315BR277,000 μg/L277,000 μg/L
MW-317BRMW-317BR350,000 J- μg/L350,000 J- μg/L
250000250000
7
5
0
0
0
0
7
5
0
0
0
0
5 0 0 0 0 0500000
5 0 0 0 0 0
5 0 0 0 0 0
TOTAL DISSOLVED SOLIDS ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-96
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR TOTAL DISSOLVED SOLIDS IS 500000 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
&<
&<
&<
&<
&<
&<
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&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-30SAB-30S0.02 J μg/L ( ˂ 0.1 U μg/L)0.02 J μg/L ( ˂ 0.1 U μg/L)
AS-12SAS-12S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
BG-5SBG-5S0.019 J μg/L ( ˂ 0.1 U μg/L)0.019 J μg/L ( ˂ 0.1 U μg/L)
GWA-11SGWA-11S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)GWA-12SGWA-12S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-1SGWA-1S0.016 J μg/L ( ˂ 0.1 U μg/L)0.016 J μg/L ( ˂ 0.1 U μg/L)
GWA-2SGWA-2S0.016 J μg/L ( ˂ 0.1 U μg/L)0.016 J μg/L ( ˂ 0.1 U μg/L)
GWA-3SGWA-3S0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-4SGWA-4S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-6SGWA-6S0.5 U μg/L0.5 U μg/L (0.14 J μg/L) (0.14 J μg/L)
GWA-7SGWA-7S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-8SGWA-8S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-9SGWA-9S0.034 J μg/L ( ˂ 0.1 U μg/L)0.034 J μg/L ( ˂ 0.1 U μg/L)
MW-10MW-100.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-11MW-110.023 J μg/L ( ˂ 0.1 U μg/L)0.023 J μg/L ( ˂ 0.1 U μg/L)
MW-12MW-120.017 J μg/L ( ˂ 0.1 U μg/L)0.017 J μg/L ( ˂ 0.1 U μg/L)
MW-20SMW-20S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-21SMW-21S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-22SMW-22S0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)MW-9MW-90.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
0.2
0.2
Non Detect
Non Detect
THALLIUM ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-97
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR THALLIUM IS 0.2 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
&<
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&<
&<
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&<
&<
&<
&<
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&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-10DAB-10D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
AB-25DAB-25D0.023 J μg/L ( ˂ 0.1 U μg/L)0.023 J μg/L ( ˂ 0.1 U μg/L)
AB-30DAB-30D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
AB-5DAB-5D0.024 J μg/L (0.018 J+ μg/L)0.024 J μg/L (0.018 J+ μg/L)
AS-10DAS-10D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
AS-2DAS-2D0.061 J μg/L ( ˂ 0.1 U μg/L)0.061 J μg/L ( ˂ 0.1 U μg/L)
AS-4DAS-4D0.034 J μg/L ( ˂ 0.1 U μg/L)0.034 J μg/L ( ˂ 0.1 U μg/L)
AS-6DAS-6D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
AS-8DAS-8D0.2 UJ μg/L (0.2 UJ μg/L)0.2 UJ μg/L (0.2 UJ μg/L)
BG-5DBG-5D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-10DGWA-10D0.256 μg/L0.256 μg/L ( ˂ 0.2 U μg/L) ( ˂ 0.2 U μg/L)
GWA-11DGWA-11D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-12DGWA-12D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-14DGWA-14D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-15DGWA-15D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-1DGWA-1D0.1 U μg/L (0.045 J μg/L)0.1 U μg/L (0.045 J μg/L)
GWA-2DGWA-2D0.032 J μg/L ( ˂ 0.1 U μg/L)0.032 J μg/L ( ˂ 0.1 U μg/L)
GWA-3DGWA-3D0.2 U μg/L ( ˂ 0.2 U μg/L)0.2 U μg/L ( ˂ 0.2 U μg/L)
GWA-4DGWA-4D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-6DGWA-6D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
GWA-7DGWA-7D0.1 UJ μg/L (0.1 UJ μg/L)0.1 UJ μg/L (0.1 UJ μg/L)
GWA-8DGWA-8D0.018 J μg/L ( ˂ 0.1 U μg/L)0.018 J μg/L ( ˂ 0.1 U μg/L)
GWA-9DGWA-9D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-10DMW-10D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-11DMW-11D0.021 J μg/L ( ˂ 0.1 U μg/L)0.021 J μg/L ( ˂ 0.1 U μg/L)
MW-12DMW-12D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-20DMW-20D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-21DMW-21D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-23DMW-23D0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-318DMW-318D0.2 UJ μg/L (0.2 UJ μg/L)0.2 UJ μg/L (0.2 UJ μg/L)
MW-9DMW-9D0.035 J μg/L ( ˂ 0.1 U μg/L)0.035 J μg/L ( ˂ 0.1 U μg/L)
OW-308DOW-308D0.052 J μg/L (0.046 J μg/L)0.052 J μg/L (0.046 J μg/L)
OW-310DOW-310D0.11 μg/L (0.13 μg/L)0.11 μg/L (0.13 μg/L)
0.2
0.2
THALLIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-98
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR THALLIUM IS 0.2 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
&<
&<
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&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-25BRAB-25BR0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
AB-30BRAB-30BR0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)AB-35BRAB-35BR0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
AS-8BRAS-8BR0.1 U μg/L (0.034 J μg/L)0.1 U μg/L (0.034 J μg/L)GWA-5BRGWA-5BR0.1 UJ μg/L (0.1 UJ μg/L)0.1 UJ μg/L (0.1 UJ μg/L)
MW-22BRMW-22BR0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-23BRMW-23BR0.55 μg/L0.55 μg/L ( ˂ 0.2 U μg/L) ( ˂ 0.2 U μg/L)
MW-301BRMW-301BR0.035 J μg/L ( ˂ 0.1 U μg/L)0.035 J μg/L ( ˂ 0.1 U μg/L)
MW-303BRMW-303BR0.056 J μg/L (0.017 J μg/L)0.056 J μg/L (0.017 J μg/L)
MW-306BRMW-306BR0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-308BRMW-308BR0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)
MW-310BRMW-310BR0.1 UJ μg/L (0.1 UJ μg/L)0.1 UJ μg/L (0.1 UJ μg/L)
MW-311BRMW-311BR0.016 J μg/L ( ˂ 0.1 U μg/L)0.016 J μg/L ( ˂ 0.1 U μg/L)MW-314BRMW-314BR0.016 J μg/L ( ˂ 0.1 U μg/L)0.016 J μg/L ( ˂ 0.1 U μg/L)
MW-315BRMW-315BR0.024 J μg/L ( ˂ 0.1 U μg/L)0.024 J μg/L ( ˂ 0.1 U μg/L)
MW-317BRMW-317BR0.1 U μg/L ( ˂ 0.1 U μg/L)0.1 U μg/L ( ˂ 0.1 U μg/L)Non DetectNon Detect 0 .20 .2
THALLIUM ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-99
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR THALLIUM IS 0.2 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
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&<
&<
&<
&<
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&<
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&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-30SAB-30S1 U μg/L1 U μg/L (1 UJ μg/L)(1 UJ μg/L)
AS-12SAS-12S1.1 μg/L1.1 μg/L (0.29 J μg/L) (0.29 J μg/L)
BG-5SBG-5S2.6 μg/L2.6 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-11SGWA-11S0.52 J μg/L0.52 J μg/L (0.34 J μg/L)(0.34 J μg/L)GWA-12SGWA-12S0.3 U μg/L ( ˂ 0.3 U μg/L)0.3 U μg/L ( ˂ 0.3 U μg/L)
GWA-1SGWA-1S1.5 μg/L1.5 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-2SGWA-2S1.3 μg/L1.3 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-3SGWA-3S0.3 U μg/L ( ˂ 0.3 U μg/L)0.3 U μg/L ( ˂ 0.3 U μg/L)
GWA-4SGWA-4S0.6 J μg/L0.6 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-6SGWA-6S6.5 μg/L6.5 μg/L ( ˂ 5 U μg/L)( ˂ 5 U μg/L)
GWA-7SGWA-7S0.38 J μg/L0.38 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-8SGWA-8S0.45 J μg/L0.45 J μg/L (1 UJ μg/L)(1 UJ μg/L)
GWA-9SGWA-9S5.1 μg/L5.1 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-10MW-101 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-11MW-112.6 μg/L2.6 μg/L (0.46 J μg/L)(0.46 J μg/L)
MW-12MW-122.6 μg/L2.6 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-20SMW-20S1 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-21SMW-21S1.5 μg/L1.5 μg/L (1.6 μg/L)(1.6 μg/L)
MW-22SMW-22S0.74 J μg/L0.74 J μg/L (0.48 J μg/L)(0.48 J μg/L)MW-9MW-92.3 μg/L2.3 μg/L (0.47 J μg/L)(0.47 J μg/L)
1
1
55
Non Detect
Non Detect
0
.
3
0
.
3
VANADIUM ISOCONCENTRATION CONTOUR MAP - SURFACE AQUIFER (S WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-100
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR VANADIUM IS 0.3 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
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&<
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&<
&<
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&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-10DAB-10D1.5 μg/L1.5 μg/L (2.9 μg/L)(2.9 μg/L)
AB-25DAB-25D0.69 J μg/L0.69 J μg/L (0.56 J μg/L)(0.56 J μg/L)
AB-30DAB-30D0.86 J μg/L0.86 J μg/L (0.96 J μg/L)(0.96 J μg/L)
AB-5DAB-5D0.77 J μg/L0.77 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
AS-10DAS-10D15.3 μg/L15.3 μg/L (13.3 μg/L)(13.3 μg/L)
AS-2DAS-2D1.6 μg/L1.6 μg/L (0.32 J μg/L)(0.32 J μg/L)
AS-4DAS-4D4.8 μg/L4.8 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
AS-6DAS-6D0.69 J+ μg/L0.69 J+ μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
AS-8DAS-8D1.88 J μg/L1.88 J μg/L (0.3 UJ μg/L) (0.3 UJ μg/L)
BG-5DBG-5D1 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-10DGWA-10D3.36 μg/L3.36 μg/L (0.324 μg/L)(0.324 μg/L)
GWA-11DGWA-11D1.2 J+ μg/L1.2 J+ μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)GWA-12DGWA-12D5.65 μg/L5.65 μg/L (2.75 μg/L)(2.75 μg/L)GWA-14DGWA-14D0.67 J μg/L0.67 J μg/L (0.5 J μg/L)(0.5 J μg/L)
GWA-15DGWA-15D1.5 μg/L1.5 μg/L (0.86 J μg/L)(0.86 J μg/L)
GWA-1DGWA-1D0.79 J μg/L0.79 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-2DGWA-2D0.57 J μg/L0.57 J μg/L (0.5 J μg/L)(0.5 J μg/L)
GWA-3DGWA-3D0.3 U μg/L ( ˂ 0.3 U μg/L)0.3 U μg/L ( ˂ 0.3 U μg/L)
GWA-4DGWA-4D1.5 μg/L1.5 μg/L (0.95 J μg/L)(0.95 J μg/L)
GWA-6DGWA-6D1 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-7DGWA-7D0.3 J μg/L 0.3 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
GWA-8DGWA-8D5.2 μg/L5.2 μg/L (3.2 μg/L)(3.2 μg/L)
GWA-9DGWA-9D1.8 μg/L1.8 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-10DMW-10D1 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-11DMW-11D1 U μg/L1 U μg/L (0.5 J+ μg/L)(0.5 J+ μg/L)
MW-12DMW-12D1.4 μg/L1.4 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-20DMW-20D0.41 J μg/L0.41 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-21DMW-21D1 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-23DMW-23D1 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-318DMW-318D0.654 J μg/L0.654 J μg/L (0.3 UJ μg/L) (0.3 UJ μg/L)
MW-9DMW-9D11.1 μg/L11.1 μg/L (0.5 J μg/L)(0.5 J μg/L)
OW-308DOW-308D1 U μg/L1 U μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
OW-310DOW-310D1.2 μg/L1.2 μg/L (0.95 J μg/L)(0.95 J μg/L)
Non DetectNon Detect
55
55
11
0.30.3
VANADIUM ISOCONCENTRATION CONTOUR MAP - SHALLOW AQUIFER (D WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING WELL
&<VOLUNTARY GROUNDWATER MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-101
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR VANADIUM IS 0.3 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
D D a a n n R R i i v v e e r r
S R -1 7 7 9
AB-25BRAB-25BR5.5 μg/L5.5 μg/L (5.1 μg/L)(5.1 μg/L)
AB-30BRAB-30BR0.91 J μg/L0.91 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)AB-35BRAB-35BR1.8 μg/L1.8 μg/L (0.99 J μg/L)(0.99 J μg/L)
AS-8BRAS-8BR2.7 μg/L2.7 μg/L (1.4 μg/L)(1.4 μg/L)GWA-5BRGWA-5BR0.49 J μg/L0.49 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-22BRMW-22BR0.33 J μg/L0.33 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-23BRMW-23BR1.38 μg/L1.38 μg/L (1.15 μg/L)(1.15 μg/L)
MW-301BRMW-301BR1.8 μg/L1.8 μg/L (1.5 μg/L)(1.5 μg/L)
MW-303BRMW-303BR3.7 μg/L3.7 μg/L (0.39 J μg/L)(0.39 J μg/L)
MW-306BRMW-306BR1.6 μg/L1.6 μg/L (1.5 μg/L)(1.5 μg/L)
MW-308BRMW-308BR0.84 J μg/L0.84 J μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-310BRMW-310BR2.5 μg/L2.5 μg/L (2.1 μg/L)(2.1 μg/L)
MW-311BRMW-311BR0.89 J μg/L0.89 J μg/L (0.38 J+ μg/L)(0.38 J+ μg/L)MW-314BRMW-314BR1.3 μg/L1.3 μg/L (0.65 J μg/L)(0.65 J μg/L)
MW-315BRMW-315BR1.4 μg/L1.4 μg/L ( ˂ 1 U μg/L)( ˂ 1 U μg/L)
MW-317BRMW-317BR8.4 μg/L8.4 μg/L (8.5 μg/L)(8.5 μg/L)
55
11
5 5
0 .30.3
VANADIUM ISOCONCENTRATION CONTOUR MAP - DEEP AQUIFER (BR WELLS)
ROCKINGHAM COUNTY, NORTH CAROLINA
LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING WELL
NORTH CAROLINA 2L CONTOUR (µg/L)
ISOCONCENTRATION CONTOUR (µg/L)
NON DETECT CONTOUR
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENTWITH DUKE ENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-102
N
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
300 0 300 600
SCALE (FEET)
NOTES:
GROUND WATER NC 2L STANDARD FOR VANADIUM IS 0.3 µg/L
LABELS:1. CONCENTRATION SHOWN AS FILTERED (UNFILTERED),BOLD EXCEED THE 2L STANDARD OR IMAC2. µg/L: MICROGRAMS PER LITER3. U and < = NOT DETECTED ABOVE THE METHOD REPORTING LIMIT4. J = ESTIMATED CONCENTRATION5. J+ = ESTIMATED CONCENTRATION BIASED HIGH6. J- = ESTIMATED CONCENTRATION BIASED LOW
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER M. FILARDI, P.G.
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246415
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
DUKE
�. 'ENERGY..
DAN RIVER STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
ROCKINGHAM COUNTY
NORTH CAROLINA
CROSS SECTION A -A'
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-102.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-102

1
2
3
7
S
B'
NORTHWEST
650
550
z ?
o
Q
w
500
450
400
N
AS-86R
Ana a /L
Iron
466
Manganese
910
Vanadium
2.7
200
AS-8D
Ana to / L
Iron
2900
Manganese
1140
Vanadium
1.883
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
400
e Me
MW-315BR
Ana to /L
Chromium
24.8
Cobalt
2.2
Iron
1300
Manganese
1800
Vanadium
1.4
ISSUE DATE DESCRIPTION
:9•
GWA -10D
Ana to Ng/L
Cobalt
3.45
Iron
6040
Manganese
509
Thallium
0.256
Vanadium
3.36
1000
m
0
n
1200
DISTANCE (ft)
MW-310BR
Ana to (Ng/L
Iron
377
Manganese
110
Vanadium
2.5
SECTION
B
SCALE: HORIZ 1 "=100'
VERT 1 "=25'
PROJECT MANAGER M. FILARDI, P.G.
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246415
1400
1600
NOT FOR
CONSTRUCTION
1800
2000
B'
SOUTHEAST
650
550
500
?
450
PW
2200
MW-311BR
Analyte (pg/L)
Iron
1200
Manganese
580
Vanadium
0.8931
DUKE ENERGY CAROLINAS,LLC
DUKE
�. 'ENERGY..
DAN RIVER STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
ROCKINGHAM COUNTY
NORTH CAROLINA
400
NOTES:
1. CONCENTRATIONS OF CONSTITUENTS OF
INTEREST IN GROUNWATER REPORTED
IN UNITS OF MICROGRAMS PER LITER
(ug/L)
2. GWA-10S WAS DRY WHEN WATER LEVELS
WERE TAKEN.
ANALYTE
NC 2L
GROUNDWATER IMAC
ANTIMONY
1 **
ARSENIC
10
BARIUM
700
BERYLLIUM
4**
BORON
700
CADMIUM
2
CHLORIDE***
250,000
CHROMIUM
10
COBALT
1 **
COPPER***
1,000
IRON
300
I LEAD
15
(MANGANESE
50
MERCURY
1
NICKEL
100
NITRATE***
10,000
NITRATE AS N***
1.000
pH (field)
6.5 — 8.5
SELENIUM
20
SULFATE***
250,000
THALLIUM
0.2
TOTAL DISSOLVED SOLIDS
500,000
VANADIUM
0.3**
ZINC***
1000
** Interim Maximum Allowable Concentration (IMAC)
*** Unit reported in mg/L in standard, converted
here to pug/L to match units displayed on figure.
All units shown in pug/L except pH which is
standard units.
NOTES:
U = NOT DETECTED ABOVE LABORATORY
REPORTING LIMIT
J = ESTIMATED CONCENTRATION
3.0
= LESS THAN
LABORATORY REPORTING
LIMIT
J+ =
ESTIMATED
CONCENTRATION BIASED
HIGH
J— =
ESTIMATED
CONCENTRATION BIASED
LOW
? = ESTIMATED TRANSITION ZONE (TZ) BEDROCK
(BR) CONTACT
*DNE = DOES NOT EXCEED
LEGEND:
WATER TABLE SURFACE (JUNE 2015)
WATER TABLE SURFACE SYMBOL
F — FILL
S — ALLUVIUM
M1 — SOIL/SAPROLITE; N<50
M2 — SAPROLITE/WEATHERED ROCK;
N>50 OR REC<50%
TZ — PARTIALLY WEATHERED/FRACTURED ROCK;
REC>50% AND RQD<50%
BR — SOUND ROCK; REC>85% AND RQD>50%
L�7
C
uk
CROSS SECTION B-B'
GROUNDWATER ANALYTICAL RESULTS
0 ill2"
FILENAME FIGURE 10-103.DWG SHEET
SCALE AS NOTED FIGURE 10-103

1 1 2 1 3 I 4 1 5 1 6 1 7 1 8
550
MW-314BR
Anal to
JL
Iron
1 380
Vanadiuml
1.3
500
450
400
X
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
200
400
AB-25BR
Anal to
/L
Antimony
1
Chromium
30.1
Vanadium
5.5
I,*Me
DISTANCE (ft)
.SECTION
c
SCALE: HORIZ 1 "=60'
VERT 1 "=20'
PROJECT MANAGER M. FILARDI, P.G.
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246415
AB-25D
Anal a ,IL
Antimony
1.7
Boron
840
Manganese
180
. Me
NOT FOR
CONSTRUCTION
es
i50
MW-225
Analyte g f L)
Iron
15600
Manganese
050
Vanadium
0.743
MW-22BR
Anal a
JL
Iron
760
Manganese
270
Vanadium
0.331
50
le
1000
DUKE ENERGY CAROLINAS,LLC
,f DUKE
•%.y ENER+GY
DAN RIVER STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
ROCKINGHAM COUNTY
NORTH CAROLINA
NOTE:
1. CONCENTRATIONS OF CONSTITUENTS OF
INTEREST IN GROUNDWATER REPORTED IN
UNITS OF MICROGRAMS PER LITER (ug/L)
ANALYTE
NC 2L
GROUNDWATER IMAC
ANTIMONY
1**
ARSENIC
10
BARIUM
700
BERYLLIUM
4**
BORON
700
CADMIUM
2
CHLORIDE***
250,000
CHROMIUM
10
COBALT
1**
COPPER***
1,000
IRON
300
LEAD
15
(MANGANESE
50
MERCURY
1
NICKEL
100
NITRATE***
10,000
NITRATE AS N***
1.000
pH (field)
6.5 — 8.5
SELENIUM
20
SULFATE***
250,000
THALLIUM
0.2
TOTAL DISSOLVED SOLIDS
500,000
VANADIUM
_
0.3**
ZINC***
1000
** Interim Maximum Allowable Concentration (IMAC)
*** Unit reported in mg/L in standard, converted
here to pug/L to match units displayed on figure.
All units shown in pug/L except pH which is
standard units.
NOTES:
U = NOT DETECTED ABOVE LABORATORY
REPORTING LIMIT
J = ESTIMATED CONCENTRATION
3.0 = LESS THAN LABORATORY REPORTING LIMIT
J+ = ESTIMATED CONCENTRATION BIASED HIGH
J— = ESTIMATED CONCENTRATION BIASED LOW
? = ESTIMATED TRANSITION ZONE (TZ) BEDROCK
(BR) CONTACT
*DNE = DOES NOT EXCEED
LEGEND:
WATER TABLE SURFACE (JUNE 2015)
WATER TABLE SURFACE SYMBOL
F — FILL
S — ALLUVIUM
M1 — SOIL/SAPROLITE; N < 50
M2 — SAPROLITE/WEATHERED ROCK;
N >_ 50% OR REC S 50%
TZ — PARTIALLY WEATHERED ROCK;
REC>50% AND RQD <50%
BR — SOUND ROCK;REC >: 85% AND RQD >_ 50%
CROSS SECTION C-Cl
GROUNDWATER ANALYTICAL RESULTS
0 1" 2,, FILENAME FIGURE 10-104.DWG
SCALE AS NOTED
IC
C
u
SHEET
FIGURE 10-104

HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S. Church Street, Suite 900
Charlotte, NC 28202-2075
704.338.6700
ISSUE DATE DESCRIPTION
PROJECT MANAGER M. FILARDI, P.G.
DRAWN BY:
-
DESIGNED BY:
-
CHECKED BY:
-
APPROVED BY:
-
PROJECT NUMBER
000000000246415
NOT FOR
CONSTRUCTION
DUKE ENERGY CAROLINAS,LLC
DUKE
�. 'ENERGY..
DAN RIVER STEAM STATION
COMPREHENSIVE SITE
ASSESSMENT
ROCKINGHAM COUNTY
NORTH CAROLINA
CROSS SECTION D-D'
GROUNDWATER ANALYTICAL RESULTS
0 1" 2° FILENAME I FIGURE 10-105.DWG
SCALE I AS NOTED
SHEET
FIGURE 10-105

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AUGUST 2015 10-107
AB
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5
S
AB
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1
0
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0
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AB-15S AB-25S
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3
89
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0
13
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0
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0
14
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128000 85600
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59
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36
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0
24
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0
47800 37400
Ch
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11
1
0
0
12
5
0
0
15
9
0
0
15900 14800
Ma
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e
s
i
u
m
11
1
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0
70
7
0
70
5
0
9480 6020
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0
30
30
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13
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67
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9340 6120
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14
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0
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0
0
19200 28800
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39300 74700
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AUGUST 2015 10-108
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AUGUST 2015 10-109
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AUGUST 2015 10-110
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AUGUST 2015 10-111.1
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AUGUST 2015 10-111.2
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A
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AUGUST 2015 10-112.2
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AUGUST 2015 10-112.3
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DATE
PIPER DIAGRAM: SEEPS AND SURFACE WATER AUGUST 2015
DUKE ENERGY CAROLINAS, LLC
STATION
DAN RIVER STEAM STATION ASH BASIN FIGURE
10-108
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PIPER DIAGRAM: ASH BASIN WATER, POREWATER, SEEPS, AND DATE
BACKGROUND MONITORING WELLS AUGUST 2015
DUKE ENERGY CAROLINAS, LLC
FIGURE
DAN RIVER STEAM STATION ASH BASIN
10-109
ROCKINGHAM COUNTY, NORTH CAROLINA

10-123
10-124
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S R -1 7 4 7
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7
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NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board
DETECTION MONITORING CONSTITUENTS DETECTED IN SHALLOW WELLS
ROCKINGHAM COUNTY, NORTH CAROLINA
PA
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LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
&<ASSESSMENT TEMPORARY MONITORING
&<COMPLIANCE GROUNDWATER MONITORING
&<VOLUNTARY GROUNDWATER MONITORING
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-125
500 0 500 1,000
SCALE (FEET)DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
N
NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW
µg/L: MICROGRAMS PER LITER
MW-22S
Constituent (µg/L)B 510 Ca 24,200 Cl- 20,500 pH 6.58 SO4 800 JTDS 192,000
MW-21S
Constituent (µg/L)B 190 Ca 22,000 Cl- 11,200 SO4 37,000 TDS 137,000
MW-20S
Constituent (µg/L)B < 50 UCa 15,300 Cl- 20,800 SO4 3,800 TDS 121,000
MW-12
Constituent (µg/L)B < 50 UCa 2,440 Cl- 5,900 SO4 10,200 TDS 72,000
MW-11
Constituent (µg/L)B 230 Ca 2,850 Cl- 6,500 pH 4.77 SO4 48,100 TDS 118,000
MW-10
Constituent (µg/L)B 460 Ca 41,000 Cl- 20,400 SO4 26,800 TDS 233,000
MW-9
Constituent (µg/L)B 28 JCa 11,400 Cl- 13,000 J-SO4 36,100 TDS 113,000
GWA-12S
Constituent (µg/L)B < 50 UCa 12,200 Cl- 3,000 pH 5.45 SO4 41,000 TDS 110,000
GWA-11S
Constituent (µg/L)B 110 Ca 9,730 Cl- 10,000 pH 5.83 SO4 4,400 TDS 10,000 U
GWA-9S
Constituent (µg/L)B < 50 UCa 1,050 Cl- 4,200 pH 5.55 SO4 650 JTDS 161,000 GWA-8S
Constituent (µg/L)B 34 JCa 39,600 Cl- 5,500 SO4 181,000 TDS 397,000
GWA-7S
Constituent (µg/L)B < 50 UCa 25,800 Cl- 2,400 pH 5.39 SO4 176,000 TDS 318,000
GWA-6S
Constituent (µg/L)B 610 Ca 81,100 Cl- 18,500 SO4 10,900 TDS 432,000
GWA-4S
Constituent (µg/L)B 190 Ca 19,500 Cl- 11,400 SO4 38,200 TDS 152,000
GWA-3S
Constituent (µg/L)B < 50 UCa 5,830 Cl- 11,000 pH 5.51 SO4 73,000 TDS 110,000
GWA-2S
Constituent (µg/L)B < 50 UCa 2,690 Cl- 1,800 pH 5.74 SO4 640 JTDS 37,000
GWA-1S
Constituent (µg/L)B < 50 UCa 3,450 Cl- 3,600 J+pH 5.97 SO4 15,100 J+TDS 105,000
BG-5S
Constituent (µg/L)B < 50 UCa 17,100 Cl- 6,900 SO4 41,300 TDS 175,000
AB-30S
Constituent (µg/L)B 290 Ca 8,580 Cl- 10,200 pH 4.92 SO4 81,500 TDS 183,000
AB-25S
Constituent (µg/L)B 630 Ca 37,400 Cl- 14,800 SO4 74,700 TDS 243,000
AB-15S
Constituent (µg/L)B 420 Ca 47,800 Cl- 15,900 SO4 39,300 TDS 226,000
AB-10SL
Constituent (µg/L)B 440 Ca 24,500 Cl- 15,900 SO4 29,800 TDS 239,000
AB-10SConstituent (µg/L)B 330 Ca 36,900 Cl- 12,500 SO4 24,500 TDS 226,000
AB-5S
Constituent (µg/L)B 310 Ca 59,100 Cl- 11,100 SO4 125,000 TDS 358,000
AS-12S
Constituent (µg/L)B 1000 Ca 40,700 Cl- 18,700 SO4 71,700 TDS 350,000
Analyte AbbreviationBoronBCalciumCaChlorideCl-pH (field)pHSulfateSO4Total Dissolved Solids TDS
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D a n R i v e r
S R -1 7 4 7
S R -1 9 7 4
S
R-19
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4
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1
9
6
2
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9
6
2
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1
9
5
3
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R
-
1
9
5
3
S
R
-
1
7
7
9
SR
-
1
7
7
9
NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board
DETECTION MONITORING CONSTITUENTS DETECTED IN DEEP WELLS
ROCKINGHAM COUNTY, NORTH CAROLINA
PA
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LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING
&<VOLUNTARY GROUNDWATER MONITORING
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-126
DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
N
NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW
µg/L: MICROGRAMS PER LITER
AB-5D
Constituent (µg/L)B 500 Ca 34,900 J-Cl- 15,500 SO4 45,200 TDS 247,000
AB-5D
Constituent (µg/L)B 500 Ca 34,900 J-Cl- 15,500 SO4 45,200 TDS 247,000
AB-10DConstituent (µg/L)B 290Ca 60,800 J-Cl- 24,900SO4 33,700TDS 272,000
AB-25D
Constituent (µg/L)B 840 Ca 29,300 Cl- 19,800 pH 7.09 SO4 83,000 TDS 258,000
AB-30D
Constituent (µg/L)B 250 Ca 52,300 Cl- 22,100 SO4 71,500 TDS 249,000
AS-2D
Constituent (µg/L)B 160 Ca 72,500 Cl- 16,900 pH 6.32 SO4 90,600 TDS 405,000
AS-4D
Constituent (µg/L)B 810 Ca 72,800 Cl- 21,900 pH 6.28 6.24SO4 44,900 TDS 410,000 J-
AS-6D
Constituent (µg/L)B 37 JCa 16,300 Cl- 16,300 pH 6.02 SO4 15,100 TDS 220,000 J-
AS-8D
Constituent (µg/L)B < 50 UJCa 47,000 Cl- 6,800 pH 6.72 SO4 25,000 TDS 250,000
AS-10D
Constituent (µg/L)B 29 JCa 65,000 Cl- 20,300 pH 10.67 SO4 43,900 TDS 220,000 J-
BG-5D
Constituent (µg/L)B < 50 UCa 32,400 Cl- 5,700 pH 7.06 SO4 39,400 TDS 214,000
GWA-1D
Constituent (µg/L)B < 50 UCa 54,300 Cl- 1,500 pH 7.5 SO4 4,200 TDS 220,000
GWA-2D
Constituent (µg/L)B < 50 UCa 58,200 Cl- 5,000 pH 8.98 SO4 3,100 TDS 10,000 U
GWA-3D
Constituent (µg/L)B < 50 UCa 10,800 Cl- 22,000 pH 5.7 SO4 6,200 TDS 160,000
GWA-4D
Constituent (µg/L)B 250 Ca 26,500 Cl- 14,200 pH 6.9 SO4 47,800 TDS 188,000
GWA-6D
Constituent (µg/L)B 610 Ca 50,500 Cl- 16,300 pH 6.58 SO4 88,700 TDS 302,000
GWA-7D
Constituent (µg/L)B < 50 UJCa 26,900 Cl- 3,000 pH 6.01 SO4 98,200 TDS 242,000
GWA-8D
Constituent (µg/L)B < 50 UCa 130,000 Cl- 4,700 pH 7.81 SO4 368,000 TDS 690,000 J-
GWA-9D
Constituent (µg/L)B < 50 UCa 17,700 Cl- 2,000 pH 6.4 SO4 4,200 TDS 113,000
GWA-10D
Constituent (µg/L)B 298 Ca 24,200 Cl- 14,000 pH 5.47 SO4 3,300 TDS 220,000
GWA-11D
Constituent (µg/L)B < 50 UCa 48,000 Cl- 10,900 pH 6.71 SO4 37,100 TDS 240,000 J-
GWA-12D
Constituent (µg/L)B < 50 UCa 51,700 Cl- 3,900 pH 7.47 SO4 16,000 TDS 250,000
GWA-14D
Constituent (µg/L)B 260 Ca 66,200 Cl- 13,800 pH 7.34 SO4 88,500 TDS 325,000
GWA-15D
Constituent (µg/L)B 86 Ca 140,000 Cl- 13,300 pH 7.09 SO4 307,000 TDS 705,000
MW-9D
Constituent (µg/L)B 1,000 Ca 21,100 Cl- 20,000 pH 6.57 6.73 SO4 87,300 TDS 238,000
MW-10D
Constituent (µg/L)B 460 Ca 33,600 Cl- 24,100 pH 6.2 SO4 41,300 TDS 214,000
MW-11D
Constituent (µg/L)B 87 Ca 62,500 Cl- 23,600 pH 77.8 SO4 70,000 TDS 304,000
MW-12D
Constituent (µg/L)B < 50 UCa 12,800 Cl- 9,400 pH 6.18 SO4 25,400 TDS 168,000
MW-20D
Constituent (µg/L)B 35 JCa 43,400 Cl- 4,200 pH 7.44 SO4 5,700 TDS 187,000
MW-21D
Constituent (µg/L)B 210 Ca 136,000 Cl- 17,700 pH 7.03 SO4 274,000 TDS 639,000
MW-23D
Constituent (µg/L)B < 50 UCa 61,100 Cl- 8,000 J+pH 6.89 SO4 29,800 TDS 252,000
MW-318D
Constituent (µg/L)B 1,310 Ca 21,100 Cl- 9,100 pH 5.51 SO4 91,000 TDS 270,000
OW-308D
Constituent (µg/L)B 380 Ca 20,000 Cl- 9,700 pH 6.2 SO4 115,000 TDS 264,000
OW-310D
Constituent (µg/L)B 1,100 Ca 98,500 Cl- 16,900 pH 7.44 SO4 21,600 TDS 368,000
Analyte AbbreviationBoronBCalciumCaChlorideCl-pH (field)pHSulfateSO4Total Dissolved Solids TDS
&<
&<
&<
&<
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D a n R i v e r
S R -1 7 4 7
S R -1 9 7 4
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R-19
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NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board
DETECTION MONITORING CONSTITUENTS DETECTED IN BEDROCK WELLS
ROCKINGHAM COUNTY, NORTH CAROLINA
PA
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LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
DUKE ENERGY PROPERTY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-127
500 0 500 1,000
SCALE (FEET)DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
N
NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW
µg/L: MICROGRAMS PER LITER
AB-25BR
Constituent (µg/L)B 180 Ca 33,200 Cl- 22,900 pH 9.12 SO4 99,000 TDS 296,000
AB-30BR
Constituent (µg/L)B 320 Ca 69,700 Cl- 20,800 SO4 96,700 TDS 327,000
AB-35BR
Constituent (µg/L)B 270 Ca 84,300 Cl- 18,800 pH 7.57 SO4 129,000 TDS 410,000
AS-8BR
Constituent (µg/L)B 45 JCa 84,600 Cl- 8,200 pH 7.09 SO4 74,500 TDS 370,000
GWA-5BR
Constituent (µg/L)B 190 J+Ca 188,000 Cl- 17,500 pH 6.99 SO4 416,000 TDS 873,000
MW-22BR
Constituent (µg/L)B 670 Ca 38,400 Cl- 19,400 SO4 84,100 TDS 240,000
MW-23BR
Constituent (µg/L)B < 50 UCa 53,700 Cl- 3,300 pH 7.45 SO4 12,000 TDS 270,000
MW-301BR
Constituent (µg/L)B < 50 UCa 43,100 Cl- 4,400 SO4 3,300 TDS 210,000
MW-303BR
Constituent (µg/L)B 29 J+Ca 34,700 Cl- 8,300 6.566.56.566.5SO4 14,900 TDS 272,000
ph
MW-306BR
Constituent (µg/L)B 920 Ca 91,500 Cl- 21,600 6.966.696.966.69SO4 187,000 TDS 530,000
ph
MW-308BR
Constituent (µg/L)B 260 Ca 169,000 Cl- 11,600 pH 7.05 SO4 323,000 TDS 844,000
MW-310BR
Constituent (µg/L)B 35 J+Ca 34,700 Cl- 11,600 pH 8.16 SO4 14,100 TDS 183,000
MW-311BR
Constituent (µg/L)B 690 Ca 53,400 Cl- 22,000 pH 7.05 SO4 53,000 TDS 318,000
MW-314BR
Constituent (µg/L)B 500 Ca 47,400 Cl- 30,500 pH 7.39 SO4 95,800 TDS 261,000
MW-315BR
Constituent (µg/L)B < 50 UCa 40,200 Cl- 10,400 pH 6.7 SO4 38,400 TDS 277,000
MW-317BR
Constituent (µg/L)B 44 JCa 107,000 Cl- 8,000 pH 11.44 SO4 15,500 TDS 350,000 J-Analyte AbbreviationBoronBCalciumCaChlorideCl-pH (field)pHSulfateSO4Total Dissolved Solids TDS
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
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&<&<
&<
&<
&<
&<
&<
&<&<
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D a n R i v e r
S R -1 7 4 7
S R -1 9 7 4
S
R-19
7
4
S
R
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1
9
6
2
SR
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1
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6
2
SR
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1
9
5
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5
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S
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7
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SR
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7
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NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board
ASSESSMENT MONITORING CONSTITUENTS DETECTED IN SHALLOW WELLS
ROCKINGHAM COUNTY, NORTH CAROLINA
PA
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LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
&<ASSESSMENT TEMPORARY MONITORING
&<COMPLIANCE GROUNDWATER MONITORING
&<VOLUNTARY GROUNDWATER MONITORING
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-128
500 0 500 1,000
SCALE (FEET)DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
N
NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW
µg/L: MICROGRAMS PER LITER
AB-5S
Constituent (µg/L)As 145 Ba 91 Be < 0.2 UCd 0.036 JCo 28.2 Cr 4 Hg < 0.2 UMo 20.9 Pb 0.15 Sb 0.91 Se < 0.5 UTl 0.69
AB-10SConstituent (µg/L)As 233 Ba 260 Be 0.15 JCd 0.058 JCo8.5 Cr 1.3 Hg < 0.2 UMo 14.3 Pb 0.85 Ra-226 1.07 Ra-228 < 3 USb1.3 Se 0.24 JTl0.54
AB-10SL
Constituent (µg/L)As 9.6 Ba 130 Be 0.17 JCd 0.033 JCo 1.8 Cr 5.1 Hg < 0.2 UMo 28.5 Pb 1.5 Ra-226 1.47 Ra-228 < 3 USb 9.8 Se 1.1 Tl < 0.1 U
AB-15S
Constituent (µg/L)As 442 Ba 810 Be 12.1 Cd 1.3 Co 34.1 Cr 50 Hg 0.08 JMo 28.6 Pb 77.4 Sb 6.7 Se 12.2 Tl 3.4
AB-25S
Constituent (µg/L)As 96.4 Ba 56 Be < 0.2 UCd < 0.08 UCo 0.16 JCr 0.47 JHg < 0.2 UMo 71.3 Pb 0.049 JRa-226 1.58 Ra-228 < 3 USb 1.6 Se 0.74 Tl 0.043 J
AB-30S
Constituent (µg/L)As < 0.5 UBa 130 Be 0.45 Cd 0.086 Co 29 Cr 0.99 J+Hg < 0.2 UMo < 0.5 UPb 0.44 J+Sb 2.6 JSe < 0.5 UTl 0.02 J
AS-12S
Constituent (µg/L)As 0.52 Ba 37 Be < 0.2 UCd 0.19 Co 2.2 Cr 1.1 J+Hg 0.12 JMo 2.5 Pb 0.5 J+Sb 0.23 JSe < 0.5 UTl < 0.1 U
BG-5S
Constituent (µg/L)As 0.28 JBa21 Be 0.087 JCd < 0.08 UCo 2.1 Cr 2.6 Hg < 0.2 UMo 0.11 JPb 1.7 Ra-226 1.22 Ra-228 < 3 USb < 0.5 USe < 0.5 UTl 0.019 J
GWA-1S
Constituent (µg/L)As 0.18 JBa12 Be 0.094 JCd < 0.08 UCo3 Cr 13.8 Hg 0.11 J+Mo 0.3 JPb 0.51 Sb < 0.5 UJSe < 0.5 UTl 0.016 J
GWA-2S
Constituent (µg/L)As 0.14 JBa26 Be 0.078 JCd < 0.08 UCo 2.3 Cr 2.6 Hg < 0.2 UMo 0.11 JPb 0.4 J+Sb < 0.5 USe < 0.5 UTl 0.016 J
GWA-3S
Constituent (µg/L)As < 1 UBa49 Be < 1 UCd < 1 UCo 12.2 Cr < 1 UHg < 0.05 UMo < 1 UPb < 1 USb < 1 USe < 1 UTl < 0.2 U
GWA-4S
Constituent (µg/L)As 0.2 JBa32 Be < 0.2 UCd < 0.08 UCo 2.7 Cr 3.2 Hg < 0.2 UMo 11.6 Pb 0.29 Sb < 0.5 USe < 0.5 UTl < 0.1 U
GWA-6S
Constituent (µg/L)As 2.2 JBa 210 Be < 1 UCd < 0.4 UCo 1.3 JCr3.6 Hg < 0.2 UMo 9.2 Pb 1.7 Sb < 2.5 USe < 2.5 UTl < 0.5 U
GWA-7S
Constituent (µg/L)As < 0.5 UBa28 Be 3.7 Cd 0.37 Co 17.7 Cr 1.9 Hg 0.085 J+Mo 0.14 JPb 0.18 J+Sb 0.23 JSe 0.86 Tl < 0.1 U
GWA-8S
Constituent (µg/L)As 0.57 Ba 19 Be < 0.2 UCd < 0.08 UCo 9.7 Cr 0.95 Hg < 0.2 UMo 0.73 Pb 0.068 JSb 0.16 JSe < 0.5 UTl < 0.1 U
GWA-9S
Constituent (µg/L)As 0.63 Ba 42 Be 0.67 Cd 0.036 JCo 9.3 Cr 3.5 Hg 0.073 J+Mo 0.3 JPb 4.3 Sb 0.22 JSe 0.56 Tl 0.034 J
GWA-11S
Constituent (µg/L)As 0.18 JBa25 Be < 0.2 UCd 0.046 JCo 3.3 Cr 15.6 Hg 0.81 J+Mo 0.7 J+Pb 0.11 Sb 0.18 JSe < 0.5 UTl < 0.1 UGWA-12S
Constituent (µg/L)As < 1 UBa55 Be < 1 UCd < 1 UCo < 1 UCr 1.01 Hg < 0.05 UMo < 1 UPb < 1 USb < 1 USe < 1 UTl < 0.2 U
MW-9
Constituent (µg/L)As 0.27 JBa70 Be 0.21 Cd 0.031 JCo 6.4 Cr 1.8 J+Hg 0.095 JMo < 0.5 UPb 1.4 Sb < 0.5 USe < 0.5 UTl < 0.1 U
MW-10
Constituent (µg/L)As < 0.5 UBa32 Be < 0.2 UCd < 0.08 UCo 0.28 JCr6.6 Hg < 0.2 UMo < 0.5 UPb < 0.1 USb < 0.5 USe < 0.5 UTl < 0.1 U
MW-11
Constituent (µg/L)As 0.14 JBa72 Be 0.5 Cd 0.038 JCo 29.2 Cr 1.2 J+Hg < 0.2 UMo < 0.5 UPb 1.2 J+Ra-226 < 1 UJRa-228 < 3 USb < 0.5 USe < 0.5 UTl 0.023 J
MW-12
Constituent (µg/L)As 0.71 Ba 10 Be 0.22 Cd 0.05 JCo 10.1 Cr 2.6 J+Hg 0.072 J+Mo 0.2 JPb 4.5 Sb 0.18 JSe < 0.5 UTl 0.017 J
MW-20S
Constituent (µg/L)As 0.63 Ba 13 Be < 0.2 UCd < 0.08 UCo 2.1 Cr 0.22 JHg < 0.2 UMo 0.18 JPb < 0.1 USb < 0.5 USe < 0.5 UTl < 0.1 U
MW-21S
Constituent (µg/L)As 16.8 Ba 38 Be < 0.2 UCd < 0.08 UCo 0.79 Cr 0.28 J+Hg < 0.2 UMo 19.9 Pb < 0.1 USb 0.29 JSe < 0.5 UTl < 0.1 U
MW-22S
Constituent (µg/L)As 0.94 Ba 82 Be < 0.2 UCd < 0.08 UCo 0.37 JCr1 Hg < 0.2 UMo 0.61 Pb 0.094 JSb < 0.5 USe < 0.5 UTl < 0.1 U
Analyte AbbreviationAntimonySbArsenicAsBariumBaBerylliumBeCadmiumCdChromiumCrCobaltCoLeadPbMercuryHgMolybdenum MoSeleniumSeThalliumTlRadium-226 Ra-226Radium-228 Ra-228
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NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board
ASSESSMENT MONITORING CONSTITUENTS DETECTED IN DEEP WELLS
ROCKINGHAM COUNTY, NORTH CAROLINA
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LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
&<ASSESSMENT SOIL BORING
&<ASSESSMENT TEMPORARY MONITORING
&<CLOSURE OBSERVATION WELL
&<COMPLIANCE GROUNDWATER MONITORING
&<VOLUNTARY GROUNDWATER MONITORING
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-129
500 0 500 1,000
SCALE (FEET)DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
N
NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW
µg/L: MICROGRAMS PER LITER
AB-5D
Constituent (µg/L)As 8.5 Ba 89 Be < 0.2 UCd < 0.08 UCo1 Cr 3.3 Hg < 0.2 UMo 3.5 Pb 0.058 JSb < 0.5 USe < 0.5 UTl 0.024 J
AB-10D
Constituent (µg/L)As 0.68 Ba 290 Be < 0.2 UCd < 0.08 UCo 1.1 Cr 4.1 Hg < 0.2 UMo 1.6 Pb 0.13 Ra-226 1.02 Ra-228 2.03 JSb 1.9 Se 0.22 JTl < 0.1 U
AB-25D
Constituent (µg/L)As 0.45 JBa20 Be < 0.2 UCd 0.026 JCo 0.3 JCr 0.96 Hg < 0.2 UMo 13 Pb 0.17 Ra-226 0.499 JRa-228 < 3 USb 1.7 Se < 0.5 UTl 0.023 J
AB-30D
Constituent (µg/L)As 0.41 JBa 110 Be < 0.2 UCd < 0.08 UCo 0.3 JCr2.7 Hg < 0.2 UMo 2.5 Pb 0.14 Sb 1.5 Se < 0.5 UTl < 0.1 U
AS-2D
Constituent (µg/L)As 0.29 JBa 130 Be 0.096 JCd 0.041 JCo 2.1 Cr 1.4 Hg 0.085 J+Mo 1 Pb 0.54 Sb 0.16 JSe < 0.5 UTl 0.061 J
AS-4D
Constituent (µg/L)As 1.8 Ba 97 Be 0.18 JCd < 0.08 UCo4 Cr 3.3 Hg < 0.2 UMo 7.2 Pb 1.7 Sb < 0.5 USe < 0.5 UTl 0.034 J
AS-6D
Constituent (µg/L)As 2 Ba 45 Be < 0.2 UCd < 0.08 UCo 1.1 Cr 0.47 JHg < 0.2 UMo 0.35 JPb 0.087 JSb 0.24 JSe < 0.5 UTl < 0.1 U
AS-8D
Constituent (µg/L)As 1.24 JBa82 Be < 1 UJCd < 1 UJCo < 1 UJCr 1.9 JHg < 0.05 UMo < 1 UJPb < 1 UJSb < 1 UJSe < 1 UJTl < 0.2 UJ
AS-10D
Constituent (µg/L)As 8.9 Ba 32 Be < 0.2 UCd < 0.08 UCo < 0.5 UCr2.4 Hg < 0.2 UMo 3.9 Pb < 0.1 USb 2.9 Se 35.3 Tl < 0.1 U
BG-5D
Constituent (µg/L)As < 0.5 UBa29 Be < 0.2 UCd < 0.08 UCo1 Cr 0.38 J+Hg < 0.2 UMo 1.2 Pb 0.078 JRa-226 0.897 Ra-228 1.46 Sb < 0.5 USe < 0.5 UTl < 0.1 U
GWA-1D
Constituent (µg/L)As 1.2 Ba 62 Be < 0.2 UCd < 0.08 UCo 0.3 JCr 1.6 J+Hg < 0.2 UMo 2.7 Pb 0.29 J+Sb 0.31 JSe < 0.5 UTl < 0.1 U
GWA-2D
Constituent (µg/L)As 1.3 Ba 56 Be < 0.2 UCd < 0.08 UCo < 0.5 UCr5.7 Hg 0.79 J+Mo 3.9 Pb 0.23 Sb 2.2 Se < 0.5 UTl 0.032 J
GWA-3D
Constituent (µg/L)As < 1 UBa13 Be < 1 UCd < 1 UCo 1.02 Cr 17.7 Hg < 0.05 UMo 1.28 Pb 1.5 Sb < 1 USe < 1 UTl < 0.2 U
GWA-4D
Constituent (µg/L)As 0.37 JBa26 Be < 0.2 UCd < 0.08 UCo 0.35 JCr 1.2 J+Hg < 0.2 UMo 0.64 Pb 0.45 J+Sb 0.49 JSe < 0.5 UTl < 0.1 U
GWA-6D
Constituent (µg/L)As 0.96 Ba 35 Be < 0.2 UCd < 0.08 UCo 0.51 Cr 1.1 J+Hg < 0.2 UMo3 Pb 0.18 J+Sb < 0.5 USe < 0.5 UTl < 0.1 U
GWA-7D
Constituent (µg/L)As 0.13 JBa24 Be < 0.2 UCd < 0.08 UCo 2.8 Cr 0.51 J+Hg < 0.2 UJMo 0.11 JPb 0.13 J+Sb < 0.5 USe < 0.5 UTl < 0.1 UJ
GWA-8D
Constituent (µg/L)As 1.4 Ba 34 Be < 0.2 UCd 0.027 JCo 0.26 JCr3.2 Hg < 0.2 UMo 3.4 Pb 0.81 Sb 0.71 Se 1.1 Tl 0.018 J
GWA-9D
Constituent (µg/L)As 2.3 Ba 23 Be 0.085 JCd < 0.08 UCo 1.2 Cr 2.9 Hg 0.072 JMo 0.52 Pb 0.67 J+Sb < 0.5 USe < 0.5 UTl < 0.1 U
GWA-10D
Constituent (µg/L)As < 1 UBa 136 Be < 1 UCd < 1 UCo 3.45 Cr 9.93 Hg < 0.05 UMo < 1 UPb 9.42 Sb < 1 USe < 1 UTl 0.256
GWA-11D
Constituent (µg/L)As 0.25 JBa64 Be < 0.2 UCd < 0.08 UCo 1.4 Cr 1.1 J+Hg < 0.2 UMo 0.87 Pb 0.26 Sb < 0.5 USe < 0.5 UTl < 0.1 U
GWA-12D
Constituent (µg/L)As 3.71 Ba 17 Be < 1 UCd < 1 UCo < 1 UCr 2.87 Hg < 0.05 UMo 1.52 Pb 1.74 Sb < 1 USe < 1 UTl < 0.2 U
GWA-14D
Constituent (µg/L)As 0.38 JBa78 Be < 0.2 UCd < 0.08 UCo 0.23 JCr 0.27 J+Hg < 0.2 UMo 13 Pb < 0.1 USb < 0.5 USe < 0.5 UTl < 0.1 U
GWA-15D
Constituent (µg/L)As 0.18 JBa67 Be < 0.2 UCd < 0.08 UCo 0.24 JCr 1.2 J+Hg < 0.2 UMo 0.89 Pb 0.33 J+Sb < 0.5 USe 0.24 JTl < 0.1 U
MW-9D
Constituent (µg/L)As 0.21 JBa19 Be 0.19 JCd 1.8 Co 1.5 Cr 7.1 Hg < 0.2 UMo 10.1 Pb 1.6 Sb < 0.5 USe < 0.5 UTl 0.035 J
MW-10D
Constituent (µg/L)As < 0.5 UBa45 Be < 0.2 UCd < 0.08 UCo 0.57 Cr 0.27 JHg < 0.2 UMo 0.13 JPb 0.048 JSb < 0.5 USe < 0.5 UTl < 0.1 U
MW-11D
Constituent (µg/L)As 0.25 JBa54 Be < 0.2 UCd < 0.08 UCo 0.22 JCr 1.5 J+Hg < 0.2 UMo 2.4 Pb 0.29 J+Ra-226 2.02 Ra-228 < 3 USb < 0.5 USe < 0.5 UTl 0.021 J
MW-12D
Constituent (µg/L)As 0.44 JBa29 Be 0.11 JCd < 0.08 UCo 4.8 Cr 1.4 J+Hg < 0.2 UMo 0.2 JPb 0.51 Sb < 0.5 USe < 0.5 UTl < 0.1 U
MW-20D
Constituent (µg/L)As 0.91 Ba 66 Be < 0.2 UCd < 0.08 UCo < 0.5 UCr 0.47 JHg < 0.2 UMo 0.22 JPb 0.094 JSb < 0.5 USe < 0.5 UTl < 0.1 U
MW-21D
Constituent (µg/L)As 0.21 JBa42 Be < 0.2 UCd < 0.08 UCo < 0.5 UCr 0.31 J+Hg < 0.2 UMo 0.31 JPb 0.76 Sb < 0.5 USe < 0.5 UTl < 0.1 U
MW-23D
Constituent (µg/L)As 0.27 JBa80 Be < 0.2 UCd < 0.08 UCo 0.25 JCr 0.26 J+Hg < 0.2 UMo 0.41 JPb 0.057 J+Sb < 0.5 USe < 0.5 UTl < 0.1 U
MW-318D
Constituent (µg/L)As < 1 UJBa 41 JBe < 1 UJCd < 1 UJCo 13 JCr 2.8 JHg < 0.05 UMo < 1 UJPb < 1 UJSb < 1 UJSe 1.03 JTl < 0.2 UJ
OW-308D
Constituent (µg/L)As 620 Ba 30 Be < 0.2 UCd < 0.08 UCo < 0.5 UCr 0.57 J+Hg < 0.2 UMo 2.2 Pb < 0.1 USb < 0.5 USe < 0.5 UTl 0.052 J
OW-310D
Constituent (µg/L)As 809 Ba 380 Be < 0.2 UCd < 0.08 UCo 1.2 Cr 0.48 J+Hg < 0.2 UMo 53.5 Pb 0.17 J+Sb < 0.5 UJSe < 0.5 UTl 0.11
Analyte AbbreviationAntimonySbArsenicAsBariumBaBerylliumBeCadmiumCdChromiumCrCobaltCoLeadPbMercuryHgMolybdenum MoSeleniumSeThalliumTlRadium-226 Ra-226Radium-228 Ra-228
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NC OneMap, NC Center for Geographic Information and Analysis, NC 911 Board
ASSESSMENT MONITORING CONSTITUENTS DETECTED IN DEEP WELLS
ROCKINGHAM COUNTY, NORTH CAROLINA
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LEGEND:
&<GROUNDWATER ASSESSMENT MONITORING
DUKE ENERGY PROPERTY
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT WITH DUKEENERGY PROPERTY BOUNDARY
DATE
FIGURE
AUGUST 2015
10-130
500 0 500 1,000
SCALE (FEET)DUKE ENERGY CAROLINAS, LLCDAN RIVER STEAM STATION ASH BASIN
N
NOTES:U = NOT DETECTED ABOVE THE LABORATORY REPORTING LIMITJ = ESTIMATED CONCENTRATION<3.0 = LESS THAN THE LABORATORY REPORTING LIMITJ+ = ESTIMATED CONCENTRATION BIASED HIGHJ- = ESTIMATED CONCENTRATION BIASED LOW
µg/L: MICROGRAMS PER LITER
Analyte AbbreviationAntimonySbArsenicAsBariumBaBerylliumBeCadmiumCdChromiumCrCobaltCoLeadPbMercuryHgMolybdenum MoSeleniumSeThalliumTlRadium-226 Ra-226Radium-228 Ra-228
AB-25BR
Constituent (µg/L)As 2.6 Ba 21 Be < 0.2 UCd < 0.08 UCo 0.27 JCr 30.1 Hg < 0.2 UMo 8.3 Pb 0.086 JRa-226 5.47 Ra-228 < 3 USb1 Se 0.64 Tl < 0.1 U
AB-30BR
Constituent (µg/L)As 0.83 Ba 99 Be < 0.2 UCd < 0.08 UCo 0.29 JCr 2.2 J+Hg < 0.2 UMo 2.4 Pb 0.28 Sb < 0.5 USe < 0.5 UTl < 0.1 U
AB-35BR
Constituent (µg/L)As 11.7 Ba 240 Be < 0.2 UCd < 0.08 UCo 0.26 JCr3.8 Hg < 0.2 UMo 21.4 Pb 0.16 Sb 0.48 JSe 0.67 Tl < 0.1 U
AS-8BR
Constituent (µg/L)As 0.34 JBa95 Be < 0.2 UCd < 0.08 UCo 0.15 JCr4.4 Hg < 0.2 UMo 1.8 Pb 0.19 J+Sb 0.21 JSe < 0.5 UTl < 0.1 U
GWA-5BR
Constituent (µg/L)As 0.83 Ba 75 Be < 0.2 UCd < 0.08 UCo 0.32 JCr < 0.5 UJHg < 0.2 UJMo 0.55 Pb 0.098 J+Sb < 0.5 USe < 0.5 UTl < 0.1 UJ
MW-22BR
Constituent (µg/L)As 0.41 JBa31 Be < 0.2 UCd < 0.08 UCo 0.15 JCr 0.62 J+Hg < 0.2 UMo 15.1 Pb 0.098 J+Sb 0.16 JSe < 0.5 UTl < 0.1 U
MW-301BR
Constituent (µg/L)As 0.9 Ba 35 Be < 0.2 UCd < 0.08 UCo 0.26 JCr 1.2 J+Hg < 0.2 UMo 1.3 Pb 0.14 J+Sb 0.16 JSe 0.39 JTl 0.035 J
MW-303BR
Constituent (µg/L)As 8.6 Ba 94 Be < 0.2 UJCd < 0.08 UCo 0.95 Cr 6.4 Hg < 0.2 UMo 2.1 Pb 1.2 Sb 0.25 JSe 0.33 JTl 0.056 J
MW-306BR
Constituent (µg/L)As 1 Ba 150 Be < 0.2 UCd < 0.08 UCo < 0.5 UCr 1.4 J+Hg < 0.2 UMo 1.9 Pb 0.095 JSb 0.38 JSe < 0.5 UTl < 0.1 U
MW-308BR
Constituent (µg/L)As 1.8 Ba 76 Be < 0.2 UCd < 0.08 UCo 0.6 Cr 1.5 Hg < 0.2 UJMo 8.1 Pb 0.22 J+Sb 0.24 JSe < 0.5 UTl < 0.1 U
MW-310BR
Constituent (µg/L)As 1.3 Ba 57 Be < 0.2 UCd < 0.08 UCo 0.2 JCr2.3 Hg 0.082 J+Mo 1.9 Pb 0.88 Sb 0.34 JSe 0.21 JTl < 0.1 UJ
MW-311BR
Constituent (µg/L)As 0.32 JBa 110 Be < 0.2 UCd < 0.08 UCo 0.84 Cr 3.3 J+Hg < 0.2 UMo5 Pb 0.53 J+Sb 0.3 JSe < 0.5 UTl 0.016 J
MW-314BR
Constituent (µg/L)As 0.3 JBa24 Be < 0.2 UCd < 0.08 UCo 0.34 JCr5 Hg < 0.2 UMo 0.91 Pb 0.21 Sb 0.47 JSe < 0.5 UTl 0.016 J
MW-315BR
Constituent (µg/L)As 0.19 JBa71 Be < 0.2 UCd < 0.08 UCo 2.2 Cr 24.8 Hg < 0.2 UMo 0.94 Pb 0.81 Sb 0.21 JSe < 0.5 UTl 0.024 J
MW-317BR
Constituent (µg/L)As 0.71 Ba 58 Be < 0.2 UCd < 0.08 UCo < 0.5 UCr11 Hg < 0.2 UMo 5.6 Pb 0.15 Sb 2.1 Se 0.75 Tl < 0.1 U