NC0038377_Stormwater Discharge Outfall 010 Monitoring Report_20160310

DUKEMayo Steam Plant
•� ENERGY Duke Energy Progress
10660 Boston Road
Roxboro, NC 27574
APR 1 7 2014
File: Mayo 12520-R
NC Division of Environmental Management
Division of Water Quality
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: 15A N. C. Admin. Code 2B .0506
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System(NPDES)Number NC0038377
Stormwater Discharge Outfall 010 Monitoring Report
Dear Sir or Madam:
In accordance with Part 1.C. Section E2 of NPDES Permit Number NC0038377, enclosed is the quarterly
2014 Stormwater Discharge Outfall 010 report for Carolina Power & Light Company d/b/a Progress
Energy Carolinas, Inc., now known as Duke Energy Progress, LLC (Progress) - NPDES Permit Number
NC0038377.
I cert , under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate
the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly,responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief true, accurate, and complete. 1 am aware that there a re significant penalties for submitting false
information, including the possibility of fines and imprisonment for knowing violations.
Please contact Mr. Shannon Langley at [phone], if there are any questions concerning the data in
this submittal.
Sincerely,
Enclosures
(72
William J. Thacker- Manager
Mayo Electric Generating Plant
www.duke-energy.com

Poupart
March 7, 2016
Page 2 of 2
Attached are the analytical data for these areas of wetness as well as a map that indicates the
locations of these areas of wetness. Flow measurements and analytical samples were collected
on 08 February 2016. No flow was evident at S-33 on 08 February 2016; therefore, no samples
were collected. S-34 was sampled 01 March 2016, and we will supplement this update with the
data once it becomes available.
Should you have any questions regarding this letter or require additional information, please
contact Mr. Ross Hartfield at 980-373-6583 or at [e-mail].
I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations.
Sincerely,
)--7y ....ji______;.,...
H rry K. Sideris
SVP, Environmental Health and Safety
NCDEQ cc: Sergei Chernikov
Duke Energy cc: Ross Hartfield, Jeremy Pruett, Richard Baker, Jim Wells, Robert Wylie

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NOTES:
1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE. SCALE(FEET)
2. ASH BASIN WASTE BOUNDARY, CCP LANDFILL BOUNDARY, AND ASH STORAGE AREA BOUNDARIES ARE APPROXIMATE.
3. AS -BUILT MONITORING WELL LOCATIONS PROVIDED BY DUKE ENERGY. J000 300' 60C
4. SHALLOW MONITORING WELLS (S) - WELL SCREEN INSTALLED ACROSS THE SURFICIAL WATER TABLE. = 600'
5. DEEP MONITORING WELLS (D) - WELL SCREEN INSTALLED IN THE TRANSITION ZONE BETWEEN COMPETENT BEDROCK AND THE REGOLITH.
6. ORTHOPHOTOGRAPHY WAS OBTAINED FROM NC ONEMAP GIS WEB SITE (DATED 2010).
7. TOPOGRAPHIC CONTOURS WERE OBTAINED FROM NCDOT WEB SITE (DATED 2010) AND ARE APPROXIMATE.
8. THE ASH BASIN COMPLIANCE BOUNDARY 15 ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L .0107 (a).
9. HYDROGRAPHY WAS OBTAINED FROM THE USGS NATIONAL MAP VIEWER AND DOWNLOAD PLATFORM ON MARCH 26, 2014 (http://nationalmap.gov/viewer.htmi)
10. SEEP SAMPLING LOCATIONS ARE APPROXIMATE.
11. NPDES OUTFALL AND WATER QUALITY SAMPLE LOCATIONS PROVIDED BY DUKE ENERGY.
12. SEE REPORT "CLIFFSIDE STEAM STATION ASH BASIN SURFACE WATER AND SEEP MONITORING - OCTOBER 2014, APPENDIX C" FOR DESCRIPTION OF DAM DRAINAGE SYSTEM.
N
RECEIVED/NCDEQ/DWR
MAR 10;
Water Quality
Permitting Section
w -% -w
qk f1
LEGEND:
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT
WITH DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH STORAGE AREA BOUNDARY
ASH BASIN COMPLIANCE GROUNDWATER
MONITORING WELL
-- LANDFILL LIMIT OF WASTE
STREAM
TOPOGRAPHIC CONTOUR (4 FOOT)
S • 3 C SEEP SAMPLE LOCATION
NPDES 002 A NPDES OUTFALL LOCATION
WATER QUALITY SAMPLE LOCATION
IDENTIFIED SEEPS AND WATER QUALITY
SAMPLE LOCATION MAP
DUKE ENERGY CAROLINAS, LLC
CLIFFSIDE STEAM STATION ASH BASIN
NPDES PERMIT #NC0005088
CLEVELAND COUNTY, NORTH CAROLINA
DATE
FEBRUARY 25, 2016
FIGURE
1

We
Cliffside Steam Station - Seep Monitoring Analytical Results - February 2016
Parameters
Units
S-26
S-27
S-28
S-29
S-30
S-31
S-32
S-33
S-34
Cl - Chloride
mg/I
13
49
63
63
49
49
42
-
-
Fluoride
mg/I
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
-
-
SO4 - Sulfate
mg/I
0.12
91
88
93
85
67
75
-
-
Hg - Mercury
ng/I
<0.5
2.01
1.28
0.855
5.78
12.1
20.6
-
Al - Aluminum
mg/I
1.7
0.937
0.034
0.042
1.05
3.29
0.762
-
-
Ba - Barium
mg/l
0.06
0.044
0.091
0.079
0.109
0.049
0.211
-
-
B - Boron
mg/l
<0.05
1.16
1.5
1.48
1.42
1.17
1.55
-
-
Ca -Calcium
mg/l
1.47
53.6
53
52.6
51
33.8
22.8
-
-
Alkalinty
mg/I
<10
<10
<10
<10
<10
<10
<10
-
-
Fe - Iron
mg/I
1.53
2.99
0.129
0.046
1.58
4.23
0.964
-
-
K - Potassium
mg/L
3.16
1.32
2.23
2.09
2.23
3.66
6.28
-
-
Mg -Magnesium
mg/l
1.39
8.21
4.68
4.45
5.02
7.89
12.7
-
-
Mn - Manganese
mg/l
0.079
0.882
1.96
0.206
1.76
1.66
0.56
-
-
Zn - Zinc
mg/I
0.011
<0.005
0.006
<0.005
<0.005
0.007
0.006
-
-
As - Arsenic
Ng/1
<1
<1
1.83
1.62
<1
<1
<1
-
-
Cd - Cadmium
Ng/I
<1
<1
<1
<1
<1
<1
<1
-
-
Cr - Chromium
Ng/I
1.34
1.52
<1
<1
1.41
5.54
1.37
-
-
Cu - Copper
Ng/I
<1
<1
<1
<1
<1
1.56
<1
-
-
Pb - Lead
Ng/I
1.45
<1
<1
<1
1.08
2.53
<1
-
-
Mo - Molybdenum
Ng/1
<1
<1
<1
<1
<1
<1
<1
-
-
Ni - Nickel
Ng/1
1.28
<1
<1
<1
<1
1.88
<1
-
-
Sb - Antimony
Pg/l
<1
<1
<1
<1
<1
<1
<1
-
-
Se - Selenium
Ng/1
<1
<1
<1
<1
<1
<1
<1
-
-
TI - Thallium
Ng/l
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
<0.2
-
-
TDS - Total Diss. Solids
mg/l
31
240
230
250
240
200
180
-
-
TSS-Total Suspended
Solids
mg/I
400
36
5.4
<5
37
31
53
"
pH
S.U.
6.50
6.59
6.16
5.4
5.55
5.81
5.44
-
-
Temperature
°C
14.8
12.8
13.1
11.4
10.5
12.5
12.3
-
-
Tubidity
NTU
11.1
7.2
21.0
4.3
22.0
164
13.7
-
-
Sodium
mg/L
5.38
13.3
11.1
10.9
11.1
11.2
8.48
-
-
Nitrite + Nitrate
mg-N/L
0.22
<0.01
0.06
0.09
<0.01
<0.01
<0.01
-
-
Carbonate Alkalinity
mg/L
<10
<10
<10
<10
<10
<10
<10
-
-
Bicarbonate Alkalinity
mg/L
<10
36
<10
<10
<10
<10
<10
-
-
Specific conductance
PS/cm
114
443
452
441
433
359
352
-
-
Flow
cfs
0.0023
0.003
0.001
0.0001
0.003
0.0002
0.0008
-
-