NC0038377_ Isoconcentration Maps_wCCR_20180315

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HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
ABMW-1*323
MW-12S†1.11
ABMW-4*547
ABMW-2*957 M4
ABMW-3*191
CCR-101S-BG†2.12
MW-3ND
ABMW-3SND
MW-16SND
CCR-103SND
CCR-104SND
CCR-105SND
NOTES:THE NORTH CAROLINA 2L FOR ARSENIC IS 10 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-1ISOCONCENTRATION MAP -ARSENIC IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL ARSENIC CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1 10ABMW-4D26.9
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-2ND
CW-3ND
MW-18DND
MW-19DND
MW-16DND
CCR-101D-BGND
CCR-103DND
CCR-105DND
NOTES:THE NORTH CAROLINA 2L FOR ARSENIC IS 10 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-2ISOCONCENTRATION MAP -ARSENIC IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL ARSENIC CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
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HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1ABMW-4BR1.26
MW-5BR1.06
ABMW-2BR3.06
ABMW-2BRL1.88
CCR-104BR1.23
CCR-106BR1.98
CCR-108BR2.59 MW-7BRND
MW-2ND
BG-1ND
CW-1DND
CW-2DND
CW-4ND
CW-5ND
CW-6ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-19BRND
MW-13BRND
MW-14BRND
MW-4ND
MW-16BRND
MY-3ND
MY-5ND
MY-7ND
CCR-102BR-BGND
CCR-103BRND
CCR-105BRND
CCR-107BRND
MW-11BRNS
NOTES:THE NORTH CAROLINA 2L FOR ARSENIC IS 10 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-3ISOCONCENTRATION MAP -ARSENIC IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL ARSENIC CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1 9
ABMW-1*520
MW-356
MW-12S13
ABMW-4*592
ABMW-2*113
ABMW-3*258 ABMW-3S22
MW-16S70
CCR-101S-BG†81
CCR-103S123
CCR-104S38
CCR-105S39
NOTES:THE NORTH CAROLINA 2L FOR BARIUM IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 19 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-4ISOCONCENTRATION MAP -BARIUM IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BARIUM CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
807
0
0
MW-7D18
MW-12D15
BG-247
CW-2122
CW-316
MW-19D62ABMW-4D890
MW-16D6
CCR-101D-BG16
CCR-103D98 CCR-105D35
CW-1ND
MW-18DND
NOTES:THE NORTH CAROLINA 2L FOR BARIUM IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 80 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-5ISOCONCENTRATION MAP -BARIUM IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BARIUM CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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&<
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&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
9 7
97
97
MW-7BR157
MW-251
CW-427
BG-184
CW-2D31
CW-642
MW-3BR38
MW-8BR22
MW-18BR96
MW-19BR53
ABMW-4BR113
CW-546
MW-5BR37
MW-13BR32
MW-14BR15
ABMW-2BR115
ABMW-2BRL72
MW-48
MW-16BR12
MY-360.4
MY-554.5
MY-730
CCR-102BR-BG32
CCR-103BR100
CCR-104BR26
CCR-105BR7
CCR-106BR28
CCR-107BR59
CCR-108BR29
CW-1DND
MW-10BRND
MW-11BRNS
NOTES:THE NORTH CAROLINA 2L FOR BARIUM IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 97 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-6ISOCONCENTRATION MAP -BARIUM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BARIUM CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
50700
ABMW-1*5820
MW-3982
ABMW-4*6520
ABMW-2*8800
ABMW-3*2000
ABMW-3S1330
MW-16S179
CCR-103S481
CCR-104S267
CCR-105S746
MW-12SND
CCR-101S-BGND
NOTES:THE NORTH CAROLINA 2L FOR BORON IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-7ISOCONCENTRATION MAP -BORON IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BORON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
50 700CW-2808 B3
ABMW-4D3470
CCR-103D1100
CCR-105D761
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-3ND
MW-18DND
MW-19DND
MW-16DND
CCR-101D-BGND
NOTES:THE NORTH CAROLINA 2L FOR BORON IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-8ISOCONCENTRATION MAP -BORON IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BORON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
50
7
0
0
CW-2D290 B3
CCR-103BR1970
CCR-105BR823
CCR-107BR1410 MW-7BRND
MW-2ND
BG-1ND
CW-1DND
CW-6ND
CW-4ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-19BRND
ABMW-4BRND
CW-5ND
MW-5BRND
MW-13BRND
MW-14BRND
ABMW-2BRND
ABMW-2BRLND
MW-4ND
MW-16BRND
MY-3ND
MY-5ND
MY-7ND
CCR-102BR-BGND
CCR-104BRND
CCR-106BRND
CCR-108BRND
MW-11BRNS
NOTES:THE NORTH CAROLINA 2L FOR BORON IS 700 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 50μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-9ISOCONCENTRATION MAP -BORON IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL BORON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3ABMW-1*50.6 B2
MW-329.5
MW-12S†5.1
ABMW-4*122
ABMW-2*50.4
ABMW-3*61.4
ABMW-3S3.32
MW-16S14.1
CCR-101S-BG†15.9 B2
CCR-103S27.6 B2
CCR-104S18.7 B2
CCR-105S20.7 B2
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR CALCIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-10ISOCONCENTRATION MAP -CALCIUM IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CALCIUM CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
6060
MW-7D53.5 B1
MW-12D12.1
BG-255.3
CW-19.73
CW-217.1
CW-364.5
MW-18D42.1
MW-19D110
ABMW-4D119
MW-16D26
CCR-101D-BG13.1 B2
CCR-103D40.9 B2
CCR-105D24.3 B2
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR CALCIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 60 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-11ISOCONCENTRATION MAP -CALCIUM IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CALCIUM CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
7575
7 5
75MW-7BR52.5 B1
MW-218.6
BG-112.9
CW-1D47.6
CW-2D85.7
CW-412.7
CW-556.1
CW-6†112
MW-3BR148
MW-8BR74.4
MW-10BR32
MW-18BR99.4
MW-19BR126
ABMW-4BR75.3
MW-5BR†93.3
MW-13BR64.4
MW-14BR13.9
ABMW-2BR76.5ABMW-2BRL69.9
MW-430.1
MW-16BR29.4
MY-322
MY-5†84.8
MY-77.49
CCR-102BR-BG34.5 B2
CCR-103BR62.1 B2
CCR-104BR144 B2
CCR-105BR71.4 B2
CCR-106BR135 B2
CCR-107BR52.3 B2 CCR-108BR55.3 B2
MW-11BRNS
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR CALCIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 75 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-12ISOCONCENTRATION MAP -CALCIUM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CALCIUM CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3
ABMW-1*13
MW-350
MW-12S0.56
ABMW-4*12
ABMW-2*15
ABMW-3*70
ABMW-3S12
MW-16S35
CCR-101S-BG†13
CCR-103S37
CCR-104S25
CCR-105S34
NOTES:THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-13ISOCONCENTRATION MAP -CHLORIDE IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CHLORIDE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3333
33MW-7D†73
MW-12D4.3
BG-2†35
CW-118
CW-250
CW-392
MW-18D25
MW-19D150
ABMW-4D13
MW-16D10
CCR-101D-BG2
CCR-103D52
CCR-105D33
NOTES:THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 33 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-14ISOCONCENTRATION MAP - CHLORIDE INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CHLORIDE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
45
454545 MW-7BR11
MW-214
BG-110
CW-1D10
CW-2D35
CW-692
CW-47.3
MW-3BR150
MW-8BR110
MW-10BR20
MW-18BR66
MW-19BR160
ABMW-4BR5.2
CW-539
MW-5BR69
MW-13BR33
MW-14BR13
ABMW-2BR28ABMW-2BRL23
MW-47.6
MW-16BR8.1
MY-332.2
MY-539.7
MY-75.5
CCR-102BR-BG14
CCR-103BR61
CCR-104BR63
CCR-105BR27
CCR-106BR15
CCR-107BR76
CCR-108BR52
MW-11BRNS
NOTES:THE NORTH CAROLINA 2L FOR CHLORIDE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 45 mg/L
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-15ISOCONCENTRATION MAP -CHLORIDE IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
CHLORIDE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<
&<&<
&<&<&<&<&<&<
&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROAD1981 C&DLANDFILL
ASH BASIN
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-12S1.06
MW-16S2.66
CCR-104S43
ABMW-1*0.83
MW-30.19
MW-12S4.4
ABMW-2*0.084
MW-16S0.028
ABMW-1*ND
MW-3ND
ABMW-4*ND
ABMW-2*ND
ABMW-3*ND
ABMW-3SND
CCR-101S-BGND
CCR-103SND
CCR-105SND
ABMW-4*ND ABMW-3*ND
ABMW-3SND
CCR-101S-BGNS
CCR-103SNS
CCR-104SNS
CCR-105SNS
NOTES:THE NORTH CAROLINA 2L FOR TOTAL CHROMIUM IS 10 μg/L.
PROVISIONAL THRESHOLD BACKGROUND VALUE IS 3.2 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-16ISOCONCENTRATION MAP -CHROMIUM (VI) AND CHROMIUM (TOTAL) IN SURFICIALGROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 02/20/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_Chromium_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
TOTAL CHROMIUM CONCENTRATION (μg/L)1
TOTAL CHROMIUM NOT DETECTED ABOVEREPORTING LIMITND
CHROMIUM (VI) CONCENTRATION (µg/L)1
CHROMIUM (VI) NOT DETECTED ABOVEREPORTING LIMITND
TOTAL CHROMIUM NOT SAMPLEDNS
CHROMIUM (VI) NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROAD1981 C&DLANDFILL
ASH BASIN
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D6
MW-12D1.25
CW-11.55
CW-39.58
ABMW-4D1.3
CCR-101D-BG†6.16
MW-12D0.63
CW-10.21
CW-20.19 M1
CW-30.083
MW-18D0.054
MW-16D0.67
MW-7DND
BG-2ND
CW-2ND
MW-18DND
MW-19DND
MW-16DND
CCR-103DND
CCR-105DND
MW-7DND
BG-2ND
MW-19DND
ABMW-4DND
CCR-101D-BGNS
CCR-103DNS
CCR-105DNS
NOTES:THE NORTH CAROLINA 2L FOR TOTAL CHROMIUM IS 10 μg/L.
PROVISIONAL THRESHOLD BACKGROUND VALUE IS 6 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-17ISOCONCENTRATION MAP -CHROMIUM (VI) AND CHROMIUM (TOTAL) IN TRANSITIONZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 02/20/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_Chromium_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
TOTAL CHROMIUM CONCENTRATION (μg/L)1
TOTAL CHROMIUM NOT DETECTED ABOVEREPORTING LIMITND
CHROMIUM (VI) CONCENTRATION (µg/L)1
CHROMIUM (VI) NOT DETECTED ABOVEREPORTING LIMITND
TOTAL CHROMIUM NOT SAMPLEDNS
CHROMIUM (VI) NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<&<
&<
&<&<&<
&<&<
&<
&<
&<
&<
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&<
&<
&<
&<
&<&<
&<&<
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&<&<
&<&<
&<&<
&<&<&<
&>&>
&<&<
&<&<
&<&<&<&<
&<&<
&<&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION RAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADRAILROAD1981 C&DLANDFILL
ASH BASIN
R T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-8BR2.34
MW-13BR1.54
MY-30.6
MY-70.86
MW-20.08
BG-10.25
CW-1D0.041
CW-40.26
MW-10BR0.074
CW-50.043MW-14BR0.048
ABMW-2BR0.7ABMW-2BRL0.91
MW-40.06
MY-30.13
MY-70.63
MW-7BRND
MW-2ND
CW-1DND
CW-2DND
CW-4ND
CW-5ND
CW-6ND
BG-1ND
MW-3BRND
MW-10BRND
MW-18BRND
MW-19BRND
ABMW-4BRND
MW-5BRND
MW-14BRND
ABMW-2BRND
ABMW-2BRLND
MW-4ND
MW-16BRND
MY-5ND
CCR-102BR-BGND
CCR-103BRND
CCR-104BRND
CCR-105BRND CCR-106BRND
CCR-107BRND
CCR-108BRND
MW-11BRNS
MW-7BRND
CW-2DND
CW-6ND
MW-3BRND
MW-8BRND
MW-18BRND MW-19BRND
ABMW-4BRND
MW-5BRND
MW-13BRND
MW-16BRND
MY-5ND
MW-11BRNS
CCR-102BR-BGNS
CCR-103BRNS
CCR-104BRNS
CCR-105BRNS
CCR-106BRNS
CCR-107BRNS
CCR-108BRNS
NOTES:THE NORTH CAROLINA 2L FOR TOTAL CHROMIUM IS 10 μg/L.
PROVISIONAL THRESHOLD BACKGROUND VALUE IS 7 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-18ISOCONCENTRATION MAP -CHROMIUM (VI) AND CHROMIUM (TOTAL) IN BEDROCKGROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 02/20/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_Chromium_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
LEGEND
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
TOTAL CHROMIUM CONCENTRATION (μg/L)1
TOTAL CHROMIUM NOT DETECTED ABOVEREPORTING LIMITND
CHROMIUM (VI) CONCENTRATION (µg/L)1
CHROMIUM (VI) NOT DETECTED ABOVEREPORTING LIMITND
TOTAL CHROMIUM NOT SAMPLEDNS
CHROMIUM (VI) NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D1
ABMW-1*3.87
MW-12S†1.59
ABMW-4*2.5
ABMW-3S2.04
CCR-101S-BG†6.78
CCR-103S2.45
CCR-104S2.63
CCR-105S4.73
MW-3ND
ABMW-2*ND
ABMW-3*ND
MW-16SND
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-19ISOCONCENTRATION MAP -COBALT IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL COBALT CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1ABMW-4D5.9
CCR-101D-BG†1.02
CCR-103D1.55
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-2ND
CW-3ND
MW-18DND
MW-19DND
MW-16DND
CCR-105DND
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-20ISOCONCENTRATION MAP -COBALT IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL COBALT CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1.251.25MW-21.88
MW-13BR†3.08
CCR-102BR-BG1.23
CCR-108BR1.55 MW-7BRND
BG-1ND
CW-1DND
CW-2DND
CW-5ND
CW-6ND
CW-4ND
MW-3BRND
MW-8BRND
MW-10BRND
MW-18BRND
MW-19BRND
ABMW-4BRND
MW-5BRND
MW-14BRND
ABMW-2BRNDABMW-2BRLND
MW-4ND
MW-16BRND
MY-3ND
MY-5ND
MY-7ND
CCR-103BRND
CCR-104BRND
CCR-105BRND CCR-106BRND
CCR-107BRND
MW-11BRNS
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR COBALT IS 1 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1.25 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-21ISOCONCENTRATION MAP -COBALT IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL COBALT CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
385
ABMW-1*1450
MW-12S†6820
ABMW-4*7170
ABMW-2*95
ABMW-3*15800
ABMW-3S1520
MW-16S94
MW-3ND
CCR-101S-BGNS
CCR-103SNS
CCR-104SNS
CCR-105SNS
NOTES:THE NORTH CAROLINA 2L FOR IRON IS 300 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 385 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-22ISOCONCENTRATION MAP -IRON IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL IRON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1 3 2 0
MW-7D353
MW-12D242
BG-2500
CW-1289
CW-3211
MW-19D2030
ABMW-4D58800
MW-16D316
CW-2ND
MW-18DND
CCR-101D-BGNS
CCR-103DNS
CCR-105DNS
NOTES:THE NORTH CAROLINA 2L FOR IRON IS 300 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1,320 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-23ISOCONCENTRATION MAP -IRON IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL IRON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
3359MW-7BR369
MW-2574
BG-149
CW-1D27
CW-2D226
CW-62040
CW-4153
MW-3BR313
MW-8BR†587
MW-18BR241
MW-19BR1080
ABMW-4BR438
CW-5360
MW-5BR†7100
MW-13BR†3260
MW-14BR52
ABMW-2BR1230ABMW-2BRL1840
MW-4182
MW-16BR505
MY-5953
MW-10BRND
MY-3ND
MY-7ND
MW-11BRNS
CCR-102BR-BGNS
CCR-103BRNS
CCR-104BRNS
CCR-105BRNS CCR-106BRNS
CCR-107BRNS
CCR-108BRNS
NOTES:THE NORTH CAROLINA 2L FOR IRON IS 300 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3,359 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-24ISOCONCENTRATION MAP -IRON IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL IRON CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D253
ABMW-1*982
MW-31280
MW-12S†395
ABMW-4*2620
ABMW-2*452
ABMW-3*836
ABMW-3S364
MW-16S129
CCR-101S-BGNS
CCR-103SNS
CCR-104SNS
CCR-105SNS
NOTES:THE NORTH CAROLINA 2L FOR MANGANESE IS 50 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 253 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-25ISOCONCENTRATION MAP -MANGANESE IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MANGANESE CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
300300MW-7D77
MW-12D45
BG-2117
CW-118
CW-2118
CW-319
MW-19D1100
ABMW-4D6960
MW-16D124
MW-18DND
CCR-101D-BGNS
CCR-103DNS
CCR-105DNS
NOTES:THE NORTH CAROLINA 2L FOR MANGANESE IS 50 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 300 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-26ISOCONCENTRATION MAP - MANGANESE INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MANGANESE CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
545
5
4
5
545
545MW-7BR198
MW-2564
BG-16
CW-1D11
CW-2D785
CW-6†1440
MW-3BR550
MW-8BR278
MW-10BR54
MW-18BR1360
MW-19BR1220
ABMW-4BR363
CW-5464
MW-5BR†1830
MW-13BR383
MW-14BR130
ABMW-2BR242ABMW-2BRL341
MW-4178
MW-16BR158
MY-38
MY-5†517
MY-70.78
CW-4ND
MW-11BRNS
CCR-102BR-BGNS
CCR-103BRNS
CCR-104BRNS
CCR-105BRNS CCR-106BRNS
CCR-107BRNS
CCR-108BRNS
NOTES:THE NORTH CAROLINA 2L FOR MANGANESE IS 50 μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 545 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-27ISOCONCENTRATION MAP -MANGANESE IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MANGANESE CONCENTRATION (μg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
ABMW-1*304
MW-12S1.97
ABMW-4*471
ABMW-2*1560 M4
ABMW-3*39.8
CCR-101S-BG1.07
CCR-104S1.44 MW-3ND
ABMW-3SND
MW-16SND
CCR-103SND
CCR-105SND
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 3.15 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-28ISOCONCENTRATION MAP -MOLYBDENUM IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MOLYBDENUM CONCENTRATION (μg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1
1
ABMW-4D8.1
MW-16D5.98
CCR-101D-BG†239
CCR-105D4.09
MW-7DND
MW-12DND
BG-2ND
CW-1ND
CW-2ND
CW-3ND
MW-18DND
MW-19DND
CCR-103DND
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS SET AT REPORTING LIMIT OF 1μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-29ISOCONCENTRATION MAP - MOLYBDENUM INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MOLYBDENUM CONCENTRATION (μg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
1313MW-7BR2.39
MW-21.63
CW-1D22
CW-2D1.13
CW-63.53 MW-8BR2.46
MW-18BR1.85ABMW-4BR8.57
MW-5BR1.02
MW-13BR2.2
MW-14BR4.34
ABMW-2BR10.9ABMW-2BRL2
MW-42.7
MW-16BR49.2
MY-73.8
CCR-102BR-BG6.91
CCR-104BR3.41
CCR-105BR2.92 CCR-106BR4.12
CCR-107BR1.29
CCR-108BR4.45
BG-1ND
CW-4ND
MW-3BRND
MW-10BRND
MW-19BRND
CW-5ND
MY-3ND
MY-5ND
CCR-103BRND
MW-11BRNS
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR MOLYBDENUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 13 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-30ISOCONCENTRATION MAP -MOLYBDEN UM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL MOLYBDENUM CONCENTRATION (μg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
25ABMW-1*1890
MW-3334
MW-12S†27
ABMW-4*3160
ABMW-2*1380
ABMW-3*1650
ABMW-3S75
MW-16S178
CCR-101S-BGNS
CCR-103SNS
CCR-104SNS
CCR-105SNS
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 25 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-31ISOCONCENTRATION MAP -STRONTIUM IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
STRONTIUM CONCENTRATION (µg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
391391391MW-7D447
MW-12D85
BG-2309
CW-167
CW-2232
CW-3317
MW-18D159
MW-19D398
ABMW-4D1740
MW-16D176
CCR-101D-BGNS
CCR-103DNS
CCR-105DNS
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 391 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-32ISOCONCENTRATION MAP - STRONTIUM INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
STRONTIUM CONCENTRATION (µg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
418 418418MW-7BR1040
MW-2184
BG-1169
CW-1D172
CW-2D411
CW-6336
CW-4132
MW-3BR402
MW-8BR342
MW-10BR201
MW-18BR477
MW-19BR447
ABMW-4BR1940
CW-5167
MW-5BR231
MW-13BR360
MW-14BR143
ABMW-2BR1110
ABMW-2BRL2320
MW-4112
MW-16BR109
MY-3391
MY-5†621
MY-7106
MW-11BRNS
CCR-102BR-BGNS
CCR-103BRNS
CCR-104BRNS
CCR-105BRNS
CCR-106BRNS
CCR-107BRNS
CCR-108BRNS
NOTES:NO NORTH CAROLINA 2L OR INTERIM MAXIMUM ALLOW ABLE CONCENTRATIONESTABLISHED FOR STRONTIUM.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 418 μg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-33ISOCONCENTRATION MAP -STRONTIUM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
STRONTIUM CONCENTRATION (µg/L)1
STANDARD CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D1.6
ABMW-1*21
MW-322
MW-12S0.95
ABMW-4*56
ABMW-2*36
ABMW-3*33
ABMW-3S0.49
MW-16S10
CCR-101S-BG†9.2
CCR-103S67
CCR-104S22
CCR-105S17
NOTES:THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1.6 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-34ISOCONCENTRATION MAP -SULFATE IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
SULFATE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
7.5
7 .5 7.57.57.5MW-7D10
MW-12D1.1
BG-25.5
CW-18.5
CW-237
CW-315
MW-18D37
MW-19D56
ABMW-4D0.78
MW-16D7.6
CCR-101D-BG†9.5
CCR-103D90
CCR-105D19
NOTES:THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 7.5 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-35ISOCONCENTRATION MAP -SULFATE IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
SULFATE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
18181818
MW-7BR2.8
MW-218
BG-10.27
CW-1D3.5
CW-2D62
CW-425 CW-426
CW-56.4
CW-638
CW-1D3.3
CW-2D61
CW-424 MW-3BR11
MW-8BR37
MW-10BR87
MW-18BR13
MW-19BR53
ABMW-4BR30
CW-56.3MW-5BR1.4
MW-13BR15
MW-14BR8.9
ABMW-2BR8.2
ABMW-2BRL0.28
MW-439
MW-16BR0.62
MY-3†55.6
MY-55.7
MY-72.7
CCR-102BR-BG†140
CCR-103BR150
CCR-104BR100
CCR-105BR17
CCR-106BR250
CCR-107BR57
CCR-108BR18
MW-11BRNS
NOTES:THE NORTH CAROLINA 2L FOR SULFATE IS 250 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 18 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-36ISOCONCENTRATION MAP -SULFATE IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
SULFATE CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
85ABMW-1*370
MW-3200
MW-12S51
ABMW-4*560
ABMW-2*440
ABMW-3*350
ABMW-3S96
MW-16S140
CCR-101S-BG†210
CCR-103S280 CCR-104S200
CCR-105S240
NOTES:THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 85 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-37ISOCONCENTRATION MAP - TOTAL DISSOLVEDSOLIDS IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
430430500
500
MW-7D370
MW-12D96
BG-2320
CW-1120
CW-2160
CW-3390
MW-18D280
MW-19D620
ABMW-4D600
MW-16D160
CCR-101D-BG150
CCR-103D310
CCR-105D250
NOTES:THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 430 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-38ISOCONCENTRATION MAP - TOTAL DISSOLVEDSOLIDS IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
340340340340
500
500
5 0 0
MW-7BR270
MW-2210
BG-1110
CW-1D210
CW-2D320
CW-6520
CW-4160
MW-3BR700
MW-8BR†490
MW-10BR310
MW-18BR440
MW-19BR730
ABMW-4BR330
CW-5310
MW-5BR440
MW-13BR340
MW-14BR210
ABMW-2BR360
ABMW-2BRL310
MW-4210
MW-16BR200
MY-3226
MY-5†349
MY-788
CCR-102BR-BG150
CCR-103BR420
CCR-104BR560
CCR-105BR350
CCR-106BR210
CCR-107BR330 CCR-108BR330
MW-11BRNS
NOTES:THE NORTH CAROLINA 2L FOR TOTAL DISSOLVED SOLIDS IS 500 mg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 340 mg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-39ISOCONCENTRATION MAP - TOTAL DISSOLVEDSOLIDS IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL DISSOLVED SOLIDS CONCENTRATION (mg/L)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<&<&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
ABMW-1*56.7
MW-12S†2.8
ABMW-4*3.66
ABMW-2*0.87
ABMW-3*0.475
MW-3ND
ABMW-3SND
MW-16SND
CCR-101S-BGNS
CCR-103SNS
CCR-104SNS
CCR-105SNS
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 1 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-40ISOCONCENTRATION MAP -VANADIUM IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL VANADIUM CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
5.9MW-7D0.734
MW-12D0.805
BG-25.06
CW-11.08
CW-31.92
MW-18D1.3ABMW-4D10.4
MW-16D0.795
CW-2ND
MW-19DND
CCR-101D-BGNS
CCR-103DNS
CCR-105DNS
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.9 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-41ISOCONCENTRATION MAP - VANADIUM INTRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL VANADIUM CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&>
&<
&<
&<&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R DMW-20.684
BG-13.76
CW-1D1.19
CW-2D0.677
CW-41.34
MW-8BR1.22
MW-10BR2.11
ABMW-4BR0.308
MW-14BR2.45
MW-41.03
MY-72.5
MW-7BRND
CW-6ND
MW-3BRND
MW-18BRND
MW-19BRND
CW-5ND
MW-5BRND
MW-13BRND
ABMW-2BRNDABMW-2BRLND
MW-16BRND
MY-3ND
MY-5ND
MW-11BRNS
CCR-102BR-BGNS
CCR-103BRNS
CCR-104BRNS
CCR-105BRNS CCR-106BRNS
CCR-107BRNS
CCR-108BRNS
NOTES:THE INTERIM MAXIMUM ALLOWABLE CONCENTRATION (IMAC) FOR VANADIUM IS 0.3μg/L.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.5 µg/L.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-42ISOCONCENTRATION MAP -VANADIUM IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
TOTAL VANADIUM CONCENTRATION (μg/L)1
IMAC CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<
&<&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-35.9
MW-12S6.2
ABMW-1*7.7
ABMW-3*6.9
ABMW-3S4.9
ABMW-4*7.4
MW-16S6.7
ABMW-2*7.8
CCR-101S-BG6.3
CCR-103S5.6
CCR-104S6.1
CCR-105S6.0
NOTES:THE NORTH CAROLINA 2L FOR pH IS 6.5-8.5 S.U.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 4.9 - 6.5 S.U.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-43ISOCONCENTRATION MAP -pH IN SURFICIAL GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
pH CONCENTRATION (S.U.)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R D
MW-12D5.9
BG-26.5
CW-15.9
CW-25.2
CW-36.5
ABMW-4D6.3
MW-16D6.9
MW-18D6.4
MW-19D6.8
CCR-101D-BG6.2
CCR-103D5.7
CCR-105D6.3
NOTES:THE NORTH CAROLINA 2L FOR pH IS 6.5-8.5 S.U.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.7 - 6.6 S.U.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
FIGURE 11-44ISOCONCENTRATION MAP -pH IN TRANSITION ZONE GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
pH CONCENTRATION (S.U.)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
<
<
<
<<<<<<<<<
<
<<<<<<<&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&<
&<&<
&<
&<
&<
&<
&<
&<
&<
&>
&<
&<
&<
&<
&<
HALIFAX COUNTY
PERSON COUNTY
HALIFAX COUNTY
PERSON COUNTY
NORTH CAROLINA-VIRGINIA STATE LINE(APPROXIMATE)
MAYO PLANT
LOUISIANA PACIFIC CORPORATION
ASH BASIN 1981 C & DLANDFILL RAILROADRAILROADR.O.W. 100'
FGDPONDS
MAYO LAKE
RAILROADR T HESTER RD
US HWY 501BOSTON RDM A Y O L A K E R DMW-25.7
CW-1D7.0
CW-2D6.7
CW-46.1
CW-56.7
CW-66.5
ABMW-2BR7.8ABMW-2BRL7.8
ABMW-4BR7.8
BG-15.6
MW-3BR7.0
MW-46.9
MW-5BR7.1
MW-8BR6.4
MW-10BR6.2
MW-13BR7.1
MW-14BR6.6
MW-16BR7.9
MW-18BR7.1
MW-19BR7.0
MY-35.6
MY-57.1
MY-76.1
CCR-102BR-BG6.4
CCR-103BR5.5
CCR-104BR7.4
CCR-105BR6.6 CCR-106BR7.6
CCR-107BR6.4
CCR-108BR6.5
MW-11BRNS
NOTES:THE NORTH CAROLINA 2L FOR pH IS 6.5-8.5 S.U.
PROVISIONAL BACKGROUND THRESHOLD VALUE IS 5.0 - 7.3 S.U.
* ASH PORE WATER WELL DISPLAYED IN THE SURFICIAL GROUNDW ATER UNIT FORANALYSIS BUT NOT USED TO CONTOUR.
† CONCENTRATION GREATER THAN CURRENT SITE SPECIFIC PBTV BUT W ITHIN THEBACKGROUND CONCENTRATION RANGE FOR SIMILAR PIEDMONT GEOLOGICSETTINGS. DUE TO GROUNDWATER FLOW DIRECTION AND OTHER CONSTITUENTMIGRATION PATTERNS, CONCENTRATION DOES NOT SUGGEST IMPACT FROM THEASH BASIN.
DATA MAY INCLUDE LAB-QUALIFIED RESULTS. REFER TO ANALYTICAL DATA TABLENOTES FOR QUALIFIER DEFINITIONS.
CONCENTRATIONS REPORTED ON FIGURE REPRESENT MOST RECENT VALIDSAMPLE RESULTS FOR EACH WELL. DATA WITH HIGH TURBIDITY (>10 NTU) ORRESULTS THAT INDICATE GROUT CONTAMINATION OF THE W ELL (PH>9) HAVE BEENREMOVED FROM DATASET. COLLECTION DATES DEPICTED ON FIGURE RANGE FROMMARCH 2015 TO JULY 2017.
PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY PROGRESS.
AERIAL PHOTOGRAPHY OBTAINED FROM GOOGLE EARTH PRO ON SEPTEMBER 27,2017. AERIAL WAS COLLECTED ON JUNE 13, 2016.
DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE PLANECOORDINATE SYSTEM FIPS 3200 (NAD83/2011).
WATER SUPPLY WELL SAMPLED BY NCDEQ BETWEEN MARCH 2015 AND SEPTEMBER2015.
FIGURE 11-45ISOCONCENTRATION MAP -pH IN BEDROCK GROUNDWATERMAYO STEAM ELECTRIC PLANTDUKE ENERGY PROGRESS, LLCROXBORO, NORTH CAROLINADRAWN BY: B. YOUNGPROJECT MANAGER: J. WYLIECHECKED BY: K. DONOVAN
DATE: 03/13/2018
148 RIVER STREET, SUITE 220GREENVILLE, SOUTH CAROLINA 29601PHONE [phone]www.synterracorp.com
P:\Duke Energy Progress.1026\00 GIS BASE DATA\Mayo\Map_Docs\CSA_Supplement_2\Mayo - Isoconcentration Maps_wCCR.mxd
500 0 500 1,000250
GRAPHIC SCALE IN FEET
LEGEND
NOT DETECTED ABOVE REPORTING LIMITND
pH CONCENTRATION (S.U.)1
NORTH CAROLINA 2L CONTOUR
PBTV CONTOUR
&<DOWNGRADIENT MONITORING W ELL
&<BACKGROUND MONITORING W ELL
&>PIEZOMETER
WATER SUPPLY W ELL
<STREAM
ASH BASIN WASTE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
LANDFILL BOUNDARY
DUKE ENERGY PROGRESS MAYO PLANTSITE BOUNDARY
NOT SAMPLEDNS