NC0004987_Updated Basin Compliance Boundary_20161121

f� DUKE
ENERGY,
November 212016
North Carolina Department of Environmental Quality
Division of Water Resources
1636 Mail Service Center
Raleigh, North Carolina 27699-1636
Re: Updated Marshall Steam Station Ash Basin Compliance Boundary
Duke Energy Marshall Steam Station
Marshall Steam Station
Catawba County
Terrell, North Carolina 28682
Dear NCDEQ Representative,
526 South Church Street:
Mail Code EC13K
Charlotte, North Carolina 28202
980-373-5697
NOV 23 2016
Water Quality
Permitting Section
Duke Energy has identified a property purchase at Marshall Steam Station that affects the currently
understood compliance boundary. Per the NPDES Permit NC0004987 Attachment 1, Item 2 (a)(ii), an
updated map is being provided. Attached you will find a revised compliance boundary for the Marshall
Steam Station to reflect the new property boundary.
This information is also being provided to the Mooresville Regional Office.
If you have comments and/or questions, please direct them to me at 980-373-5697.
Respectfully Submitted,
6. -�Ia"VOL-
Tyler Hardin
Environmental Services
Cc (via e-mail): Brandy Costner, NCDEQ
Eric Smith, NCDEQ
Andrew Pitner, NCDEQ
Ed Sullivan, Duke Energy
Mike Kafka, Duke Energy
Brad Loveland, Duke Energy

LEGEND �,' •x
CAMAASSESSMENT GROUNDWATER �-
la MONITORING WELL
NPDES COMPLIANCE GROUNDWATER
0 MONITORING WELL- �� r. �• '
NPDES VOLUNTARY GROUNDWATER i '^
0 MONITORING WELL
0 LANDFILL GROUNDWATER MONITORING WELL
® ASH BASIN COMPLIANCE BOUNDARY' -
ASH BASIN COMPLIANCE BOUNDARY
a a o COINCIDENT WITH DUKE ENERGY PROPERTY
BOUNDARY y
WrYy � tX�
ASH BASIN WASTE BOUNDARY
€tea Iffm ms DUKE ENERGY PROPERTY BOUNDARY
= LANDFILL COMPLIANCE BOUNDARY
LANDFILL/STRUCTURAL FILL BOUNDARY
ROADS I E'
HYDROGRAPHY
10' TOPOGRAPHY "' Y
r'*'y+i: k.9<•�`t,` �3'•y ^ `.fit ,��>� a47•.
Or
'>, x
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Compliance Top of Casing (TOC) Depth to Water Groundwater -
Well ID Elevation (ft) Date (ft below TOC) Elevation (ft) y
MW -4 866.42 2/4/2016 37.3 829.12 <
611/2016 3639 83003 '
MW -4D 866.74 2/412016 36.94 829.8
6/1/2016 3624 830.5
MW -10D 77204 2/4/2016 15.63 75641
6/1/2016 14.34 757.7
MW -10S 772.05 2/4/2016 1572 756.33 ;
6/1/2016 1457 757.48
MW -11D 884.67 2/4/2016 44.36 840.31
6/1/2016 43.17 841.5
MW -11S 88499 2/4/2016 4483 840.16
6/1/2016 4352 841 47
MW -12D 871 88 2/4/2016 1061 861 27
611/2016 11.01 860.87 1.
MW -12S g71-gg 2/4/2016 7.54 86432 v +
6/1/2016 9.19 862 67
2/4/2016 2.41 84464
MW -13D 847.05 +•
6/1/2016 2.51 84454
MW -13S 84749
2/4/2016 4.63 842.86
264'* c
6/1/2016 4.75 842.74
MW -140 81143 2/4/2016 3805 773.38
6/1/2016 37.33 774.1 4T
MW -14S 811.29
2/4/2016 37.58 77371
6/1/2016 36.78 774.51
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NOTES:
1. AERIAL IMAGERY ISA COMBINATION OF NC ONEMAP (2010) AND A WSP AERIAL SURVEY (2014)
2. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE
3. THE COMPLIANCE BOUNDARY FOR THE ASH BASIN IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.01 07 (a)
4. WASTE BOUNDARY IS APPROXIMATE.
6. AS -BUILT CAMA ASSESSMENT, NPDES COMPLIANCE, AND VOLUNTARY MONITORING WELL LOCATIONS ARE PROVIDED BY DUKE 0 500 1,000 1,500
ENERGY, WSP, AND OTHERS Feet
6. WELL LOCATIONS WITH BLUE LABELS ARE APPROXIMATE AND HAVE NOT BEEN INSTALLED
7. MS -8 IS USED AS A BACKGROUND MONITORING WELL; THE OTHER LANDFILL MONITORING WELLS ARE
NOT USED FOR ASH BASIN GROUNDWATER MONITORING
8. COMPLIANCE WELL DATA TAKEN FROM MANAGES DATABASE; LAST UPDATED 20160908
01 d+,&
r1P • t
AB -210
e ,A8J3 +i
asasL
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D
Q
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t},
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NOTES:
1. AERIAL IMAGERY ISA COMBINATION OF NC ONEMAP (2010) AND A WSP AERIAL SURVEY (2014)
2. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE
3. THE COMPLIANCE BOUNDARY FOR THE ASH BASIN IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.01 07 (a)
4. WASTE BOUNDARY IS APPROXIMATE.
6. AS -BUILT CAMA ASSESSMENT, NPDES COMPLIANCE, AND VOLUNTARY MONITORING WELL LOCATIONS ARE PROVIDED BY DUKE 0 500 1,000 1,500
ENERGY, WSP, AND OTHERS Feet
6. WELL LOCATIONS WITH BLUE LABELS ARE APPROXIMATE AND HAVE NOT BEEN INSTALLED
7. MS -8 IS USED AS A BACKGROUND MONITORING WELL; THE OTHER LANDFILL MONITORING WELLS ARE
NOT USED FOR ASH BASIN GROUNDWATER MONITORING
8. COMPLIANCE WELL DATA TAKEN FROM MANAGES DATABASE; LAST UPDATED 20160908
01 d+,&
r1P • t
AB -210
e ,A8J3 +i
asasL
SITE COMPLIANCE BOUNDARIES
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY, NORTH CAROLINA
DATE
NOVEMBER 18, 2016
FIGURE
MSS -1
D
D
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Ir MW] � 11 1
SITE COMPLIANCE BOUNDARIES
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY, NORTH CAROLINA
DATE
NOVEMBER 18, 2016
FIGURE
MSS -1
I/lr
� �F+f
aKF�v
SITE COMPLIANCE BOUNDARIES
DUKE ENERGY CAROLINAS, LLC
MARSHALL STEAM STATION
CATAWBA COUNTY, NORTH CAROLINA
DATE
NOVEMBER 18, 2016
FIGURE
MSS -1