NCS000580_Mayo SW Application Update_20141022

DUKE
ENERGY,
PROGRESS
October 13, 2014
Mr. Bradley Bennett
NC Division of Energy, Mineral and Land Resources
1612 Mail Service Center
Raleigh, NC 27699-1628
Subject: Duke Energy Progress, Inc. (Duke)
Mayo Electric Plant
Resubmittal of EPA Forms 1 and 2F and supplemental information
Person County
Dear Mr. Bennett:
Mayo Steam Plant
Duke Energy Progress
10660 Boston Road
Roxboro. NC 27574
Enclosed is a copy of EPA Form 1 and EPA Form 2F originally submitted to your office in 2011,
and still pending, for the subject facility. At the time of the original application the facility was
owned by Progress Energy Carolinas, Inc. Duke Energy Corp. ("Duke") subsequently submitted
a request for name change to Duke Energy Progress, Inc. to NCDENR which was approved on
July 10, 2013. A reissued permit should be issued to Duke Energy Progress, Inc. An updated
EPA Form i is included that reflects this change.
In addition to the EPA Form 1 and Form 217, Duke is providing additional copies of sampling
conducted at outfall 010 since the last permit renewal submission. Duke has obtained sampling
kits and plans to conduct any additional sampling during the fourth quarter at the same time the
required samples for outfall 010 are obtained. Sample results will be provided when available.
Past guidance received by the company from the North Carolina Department of Environment and
Natural Resources (attached) confirms that comingled storm water and wastewater that is
released through NPDES wastewater outfalls is to be permitted by NPDES wastewater permits.
Because of the potential for other flows to be present, Duke has applied for coverage from the
Department's Division of Water Resources for outfall 004, 005 and 006 as part of permit number
NC0038377. These three outfalls are currently covered for storm water releases in permit
NC0038377.
Our understanding is that NCDENR intends to issue separate storm water permits for storm
water discharges from steam electric facilities as opposed to a combined permit, as has been used
at Mayo in the past. As requested, also enclosed is a check in the amount of $860.00 for
processing the application. To this point, the annual administering and compliance fee for storm
water coverage has been included in the annual fee for permit NC0038377.
If you feel that a site visit would help in the development of the storm water permit for the plant,
I encourage you to contact our staff to arrange such a visit. If there are any questions regarding

this request, please contact Shannon Langley at [phone] or Dulcie Phillips at (336) 597-
7331.
Sincerely,
40��
William J. Thacker - Manager
Mayo Electric Plant
Cc: Shannon Langley
Mail Code NC 14
Dulcie Phillips

Update to Form submitted September 28, 2011
Please print or type in the unshaded areas only, Form Approved. OMB No. 2040-0086
FORM
US ENVIRONMENTAL PROTECTION AGENCY
I EPA I D. NUMBER
i
.=,EPA GENERAL INFORMATION
TSA r
Consofrdated Permits Program
F D
GENERAL
(Read she 'i fraiructunx" hcJlrrc starting)
r ti u u1 15
LABEL ITEMS
GENERAL INSTRUCTIONS
If a preprinted label has been provided, afhx it in the
designated spare Review the information carefully, if any of it
I EPA I.D NUMBER
Is incorrect, cross through it and enter the correct data In the
appropriate etWn area below Also, if any of the preprinted data
is absent (the area to the kA of the lakei space fists Me
Ill FACILITY NAME PLEASE PLACE LABEL IN THIS SPACE inlbrmation Mat should appear) please provide d In the proper
fill -In amats) below If the label is complete and correct you
V FACILITY MAILING
need not complete Items I III V and VI (except Vl-S which
ADDRESS
must he completed regardless) Complete at items If no label
has been provided. haler to the instructions for defaced tem
VI FACILITY LOCATION
descriptions and for me legal auf xtations under which this
data is collected.
II POLLUTANT CHARACTERISTICS
INSTRUCTIONS Complete A through J to determine whether you meed to submit any permit application forms to the EPA. if you answer 'yes' to any questions, you must
submit this form and the supplemental form listed In the parenthesis following the question Mark *X' in the box in the third column if the supplemental form is attached. If
you answer'no to each question, you need not submit any of these forms, You may answer "rW if your activity Is excluded from permit requirements; we Section C of the
Instructions. See also. Section D of the Instructions for definitions of bold-faced terms..
Mark'x-
Ma+k-x•
YES
ND
FORM
ATTACHFJ) TACH
res
NOTACM
AT TACH":-=
SPECIFIC QUESTIONS
SPECIFIC QUESTIONS
A Is this facility a publicly awned treatment works which
B Does or will th s facility (either existing or proposeco
results in a discharge to waters of the U.S.? (FORM 2A)
X
include a concentrated animal feeding operation or
X
aquatic animal production facility which results in a
+
+r
1e
m
21
discharge to waters of the U.S.? (FORM 2B)
C Isfacilityresults Indischargest
fha
X
X
D Is this a proposed facility (other than those described in A
ooters U.S.other ream sde or
or 9 above) which vA . result in a discharge to waters of
X
above? (FORM ZC)
n
n
24
the U.S.? (FORM 2D)
23
to
n
E Does or will this facility treat. store, or dispose of
F Do you or wfI you inject at this facility industrial or
hazardous wastes? (FORM 3)
X
municipal effluent below the lowermost stratum
X
containing within one quarter mile of the wall bore,
A
Y,
underground sources of drinking watef7 (FORM 4)
G Do you or will you inject at this facility any produced water
H Do you or will you .nject at this facility fluids for special
or other fluids which are brought to the surface in
processes such as minting of sulfur by the Frasch process,
connection with conventional oil or natural gas production
X
solution mining of minerals, in situ combustion of fossil
X
inject fluids used for enhanced recovery of oil or natural
fuel, or recovery of geothermal energy? (FORM 4)
gas. or Inject fluids for storage of liquid hydrocarbons?
(FORM 4)
U
:
n
y
w
I is this facility a proposed stationary source which is ora
J, Is this facility a proposed stationary source which is
of the 28 industrial categories listed In the instructions andV
X
NOT one of the 28 Industrial categories listed in the
X
which will potentially emit 100 tons per year of any air
instructions and which will potentially emit 250 tons per
pollutant regulated under the Clean Alr Act and may affect
year of any air pollutant regulated under the Clean Air Act
An
at
c
or be located in an attainment area? (FORM 5)
and may affied or be located in an attainment areal
(FORM 5)
III NAME OF FACILITY
c
t SKIP Mayo Electric Generating Plant
30
IV FACILITY CONTACT
A. NAME 8 TITLE (lair, firs I. h tide)
B PHONE (area code A- cru)
cI I
2 Tacker, illiam J. - rant Manager
( 3 ) 5 9-a 1 b I
a 1e
4 e r as '.1 r_• r.
V FACILTY MAILING ADDRESS
A STREET OR P O. BOX
3Jc 1 6 0 Bos on 61ad
IS 16
d
B CITY OR TOWN
C STATE I D ZIP CODE
4 Roxboro
J4
4
C 112404
le le
tl H a7 47 Sf
VI FACILITY LOCATION
A STREET, ROUTE NO OR OTHER SPECIFIC IDENTIFIER
c
5 1 6 a SOs on oa
aro /e
n
B COUNTY NAME
Person
r
m
C CITY OR TOWN
D STATE E ZIP CODE F COUNTY CODE (rfh w -n)
G
6 JR8xAo10
1 JC
1124544
17
16
ae
W
4? 71
as
EPA Farm 35101 (8.90) CONTINUE ON REVERSE

11e47di1111 IFId81d=T*T1T11fr s _ i337i1`i r
VII. SIC CODES (4 -digit, in order of 'ori
A. FIRST B. SECOND
4911
?
(spcify) Ee Tric (sperriDfy)
C. THIRD D FOURTH
l
z jopxTr
VIII.OPERATOR INFORMATION
A. NAME B Is the name listed n Item
VIIFA also the owner?
8 Duke Energy Progress Inc
, . ®YES ONO
,s + eo
C STATUS OF OPERATOR (linter the appmpriate le ter into the anurer btu if Other ;peri J D. PHONE (urea rale h n,- )
F = FEDERAL M =PUBLIC (arhrrrhan fcderu! ar start)
(rpecfy) e
P
P = PRIVATE TE 0 a OTHER (rip•c j)
n u n r fix e
E STREET OR P 0. BOX
4 0 South i mington Street
F. CITY OR TOWN G
STATE
I H. ZIP CODE
27601�113
1IX INDIAN LAND
the facility located on Indian lands?
O YES ONO
g Raleigh
E13„
NC
.
X. EXISTING ENVIRONMENTAL PERMITS
A. NPDE$ Dfrchar yes hr Surface Nurer D PSD dir Fmirsirnu nxa Pm urd-11, s
r
T
g N NCO038377 g p
x ,e ,r u �
B UIC Undr vuundln ern,m off luidr E OTHER r rih'
c r r
a e 8 3 9
ftpec fy) Tale v air permit
9 u g
+s +a +T a s u +e v
u a
C. RCRAfiu=anlunr ff'nues E OTHER s •rih
T 1 T
WQ0000020 (rens }) State non discharge pereeic r ear.
g R NCDO00830612 reuse
g
is ,e ,r is a is ,e ,r of n
XI. MAP
Attach to this application a topographic map of the area extending to at least one mile beyond property boundaries. The map must show the outline of the facility, the
location of each at its existing and proposed intake and discharge structures, each of its hazardous waste treatment, storage, or disposal facilities, and each well where it
injects fluids underground. Include all springs, rivers, and other surface water bodies in the map area. See instructions for precise requirements.
XII. NATURE OF BUSINESS (rovide a brief descri bion)
The Mayo Electric Generating Plant (Mayo) is a dual boiler coal fired electric generating plant with a net
generating capacity of 745 megawatts.
XIII. CERTIFICATION (see instructions)
1 certify under penalty of law that l have personally examined and am familiar with the )nformadon submitted in Phis application and all attachments and that, based on my
inquiry of those persons imme[d'ately responsible for obtaining the information contained in the application, l believe that the infrsnnation is true, accurate, and complete. l
am aware that therm are significant penalties for submitting false information, including the possibility of fine and imprisonment
A. NAME 8 OFFICIAL TITLE (sype orprini) B SIGNATURE C. DATE SIGNED
William J. Thacker
Plant Manager
COMMENTS FOR OFFICIAL USE ONLY
jC
EPA Form 3510.1 (8-99)

Update to form submitted September 27, 2011
EPA ID Number (copy from Item 1 d Form 1) Form Approved. OMB No. 2040.0086
Please print or tvoe In the unshaded areas only NCD00083 0612 I Annre nil ernires 5.11.87
FORMEPA
ZF
NPDE5
U S. Environmental Protection Agency
Washington DC 204fi0
Application for Permit to Discharge Storm Water
Discharges Associated with Industrial Activity
Paperwork Reduction Act Notice
Public reporting burden for this application is estimated to average 28.6 hours per application, including time for reviewing instructions, searching existing data sources,
gathering and maintaining the data needed, and completing and remewing the collection of information Send comments regarding the burden estimale, any other aspect
of this collection of Information, or suggestions for improving this form, including suggestions which may Increase or reduce this burden to: Chief, Information Policy
Branch, PM -223, U S Environmental Protection Agency, 1200 Pennsylvania Avenue NW Washington, DC 20460, or Director, Office of Information and Regulatory
Affairs, Office of Management and Budget, Washington, DC 20503
(.Outfall Location
For each outfall, list the latitude and longitude of its location to the nearest 15 seconds and the name of the receiving water
A. Outiall Number D Receiving Water
{hist) B Latitude C Longitude (name)
010 36 31 17 7e 53 39 Maya Reservoir
II. Improvements
A Are you now required by any Federal, Slate, or local authority to meet any implementation schedule for the construction, upgrading or operation of wastewater
treatment equipment or practices or any other environmental programs which may affect the discharges described in this application? This includes, but Is not limited
to, permit conditions, administrative or enforcement orders, enforcement compliance schedule fetters, stipulations, court orders, and grant or loan conditions.
1 Identification of Conditions, 2 Affected Outfalls Compll ncelDate
Agreements, Etc. number source of discharge 3 Brief Description of Project a, rLq
EMC SOC WO 510 012 002 ash pond inatall dry ash handling and modify s h h y
handling of FGD wastewater
8 You may attach additional sheets describing any additional water pollution (or other environmental projects which may affect your discharges) you now have under
way or which you plan. Indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction
III. Site Drainage Map
Attach a site map showing topography (or Indicating the outline of drainage areas served by the oulfalls(s) covered in the app cation if a topographic maps unavailable
depicting the facility including each of its intake and discharge structures the drainage area of each storm water outfall paved areas and buildings within the drainage
area of each storm water outfall, each known past or present areas used for outdoor storage of disposal of significant materials, each exist ng structural control measure
to reduce pollutants In storm water runoff, materials loading and access areas, areas where pesticides, herbicides, soil Gond tioners and fertilizers are applied; each of
its hazardous waste treatment, storage or disposal units (including each area not required to have a RCRA Permit which s used for accumulating hazardous waste
under 40 CFR 262 34), each welt where fluids from the facility are Injected underground; springs, and other surface water bodies which received storm water discharges
from the facility.
EPA Form 3510-2F (1-92) Page 1 of 3 Continue on Page 2

Continued from the Front
IV. Narrative Description of Pollutant Sources
A For each outfall provide an estimate of the area (include units) of imperious surfaces (including paved areas and binding roofs) drained to Vie outfall, and an estunate of the total. surface area
drained by the outfall.
Outfall
Area of Impervious Surface
Total Area Drained
Outfall
Area of Impervious Sudara
Total Area Drained
Number
(pmvwe units)
(provide units)
Number
=provide units)
(provide units)
010 3.09
acres
1113 AS acres
B Provide a narrative description of significant materials that are currently or in the past three years have been treated, stored or disposed in a manner to allow exposure
to storm water, method of treatment, storage, or disposal, past and present materials management practices employed to minimize contact by these materials with
storm water runoif; materials loading and access areas, and the location, manner and frequency in which pesticides, herbicides, soil conditioners, and fertilizers are
applied.
See attachment 6 and 7 for material handling and outfall description
C For each outfall, provide the location and a description of existing structural and nonstructural control measures to reduce pollutants in storm water runoff; and a
descriplion of the treatment the storm water receives, including the schedule and type of maintenance for control and treatment measures and the ultimate disposal
of any solid or fluid wastes other than by discharge
Outfall
List Codes from
Number
Treatment
Table 2F-1
OLg See attachment B for control mea3uree.
V. Nonstormwater Discharges
A I certify under penalty of law hal the outfall(s) covered by this application have been tested or evaluated for the presence of nonstormwater discharges, and that all
nonstormwater discharged from these outfall(s) are Identified in either an accompanying Form 2C or From 2E application for the outfall
Name and Official Title (type or print)
Signature
Date Signed
See pending F=..-=;, 2F .ub,i-r.ed -.n
;�tptember z . 2'.'_1
B Provide a description of the method used. the date of any test no and the onsite drainage points that were directly observed during a test.
I. Significant Leaks or Spills
Provide existing Information regarding the history of significant leaks or spills of toxic or hazardous pollutants at the facility In the last three years, including the
approximate date and location of the soil or leak, and the type and amount of material released
here have been n:- reportable leaks or spills of toxic or hazard --u, raubutanceu un to last three years.
EPA Form 3510-2F (1-92) Page 2 of 3 Continue on Page 3

EPA ID Number (copy from Item f of Form t)
Continued from Page 2 N=000830612
II. Discharge Information
A, 8, C, & D: See instrudions before proceeding. Complete one set of tables for each outfall. Annotate the outfall number in the space provided.
Table VII -A, VII -B, VII -C are included on separate sheets numbers VII -1 and VII -2.
E. Potential discharges not covered by analysis – is any toxic pollutant listed in table 2F-2, 2F-3, or 217.4, a substance or a component of a substance which you
currently use or manufacture as an intermediate or final product or byproduct?
© Yes (list all such pollutants below) ❑ No (go to Section iX)
There is potential for pollutants listed in 'Cable 2r-2 and the toxic pollutants listed in table 2F-3 in coal, ash or gypsum.
Ill. Biological Toxicity Testing Data
Do you have any knowledge or reason to believe that any biological test for acute or chronic loAcity has been made on any of your discharges or an a receiving water in
relation to your discharge within the last 3 years?
❑ Yes (list all such pollutants below) Q No (go to Section ►X)
IX. Contract Analysis Information
Were any of the analyses reported in item VII performed by a contract laboratory or consulting firm?
❑ Yes (list the name, address, and telephone number of, and pollutants
❑ No (go to Section Xj
analyzed by, each such laboratory or firm below)
A. Name
B. Address
C. Area Code 8 Phone No.
D Pollutants Analyzed
Pace An,.liriaal
2215 Riwescide cr.
88 254-7175
A3heviilr. NC 28804
X. Certification
1 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 property gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or arose persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belie/, true, accurate, and complete. I am aware that
there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
A. Name & Official Title (Type OrPrinQ
B. Area Code and Phone No.
See ForT. 2F submitted September 27, 2011 (attached.,
C. Signature
D. Date Signed
4UZA 0 11M./I &.
3 Z�� I
EPA Form 3510.217(1-'I / — - Page 3 of 3

EPA ID Number (copy from item 1 of Form 1) Form Approved OMB No. 2040-0000
urronnnavnr;i1 n.rsati n,n
EPA Form 3510.2F (1-92) Page VII -1 Continue on Reverse
VII. Discharge Information (Continued from page 3 of Form 2F)
Part A — You must rovida the results of at least one analysis for vary pollutant In this table. Complete one table for each outfall. Sea instructions for additional details.
Maximum Values Average Values
include units ncfude units
Number
Pollutant
Sample Grab Sample
of
and
Taken During Taken During
Storm
CAS Number
First 20 Flow -Weighted First 20 Flow -Weighted
Events
(if evalfable)
Minutes Composite Minutes Com site
Sampled
Sources of Pollutants
08 and Grease
c 1.1 mg/1
NIA
1
Below Detection limit
Biological Oxygen
Demand BOD5
2'9 mg/1
1
Decaying vegetation
Chemical Oxygen
Demand COD
Z8 mg/1
1
Decaying Vegetation
Tota! Suspended
Sol kls(TSS)
10.8 mg/1
1
Erosion, settled duet/debris
Total Nitrogen
1.1 mg/1
1
Fertilizer
Total Phosphorus
0.05 mg/1
1
Fertilizer
PH
Minimum 7. os
Maximum IMInimum
Maximum
Part B — List each pollutant that is limited in an effluent guideline which the fachily is subject to or any pollutant listed in the facility's NPDES permit for its process
wastewater (if the facilly is operating under an existing NPDES permit). Complete one table for each outfall. See the instructions for additional details and
requi
Maximum Values Average Values
include units) nclude units)
Number
Pollutant
Sample Grab Sample
of
and
Taken During Taken During
Storm
CAS Number
First 20 Flow-Welghted First 20 Floor -Weighted
Events
(Wavallable)
Minutes Composite Minutes Composite—
Sampled
Sources of Pollutants
Antimony
0.075 ug/1
Imaterial and Product Handling
7440 36-0
Arsenic
0.61 ug/1
7
Material and Product Handling
7440 3a-2
Barium
47.2 ug/1
1
Material and Product Handling
7440-39-3
Beryllium
0.022 ug/1
1
Material and Product Handling
7440-41-7
Boron
13.3 ug/1
1
Material and Product Handling
744042&-8
Cadmium
< 0.03 ug/l
1
Below Detection Limit
7440 43-9
Chlorides
7.8 ug/1
1
Material and Product Handling
16887-00-06
Chromium
1.2 ug/1
1
Material and Product Handling
7440-47-3
Cobalt
1.1 ug/1
1
Material and Product Handling
7440-48-4
Capper
1.5 ug/1
1
Material and Product Handling
7440-50-5
Fluoride
a 0.5 mg/1
1
Below Detection Limit
16984-49-e
Iron
1.66 mg/1
1
Material and Product Handling
7439-99-6
Lead
0.42 ug/1
1
Material and Product Handling
7439-92-1
Manganese
591 ug/l
1
Material and Product Handling
7439 96 5
EPA Form 3510.2F (1-92) Page VII -1 Continue on Reverse

EPA ID Number (copy from Item I of Fonn Ij Form Approved- OMB No. 2040-0098
rrrnanna,4ne» m.MF.ii mo
VII. Discharge information (Gondnued from page 3 of Form 219
Pad -- You must provkle the results of at least one analysis for every pollutant In this table. Complete one table for each outlall See Instructions for additional details.
Pollutant
and
CAS Number
(ifavailabie)
Maximum Values
Le until)
Average Values
include units
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow-Welghied
Composite
OB and Crease
Biological Oxygen
Demand BODS
N/A
Chemical Oxygen
Demand (COD)
Total Suspended
Solids (TSS)
Total Nitrogen
Total Phosphorus
PH Minimum Maximum Iminimum Maximum
Part B— List each pollutant that Is limited In an effluent guideline which the facility Is subject to or any pollutant listed in the facility's NPDES permit for its process
wastewater (If the facility Is operating under an existing NPDES permit). Complete one table for each outfall Son the instructions for additional details and
requirements.
Pollutant
and
CAS Number
(ifavailable)
Maximum Values Average Values
nciude units) nclude units) Number
Grab Sample Grab Sample of
Taken During Taken During Storm
First 20 Flow -Weighted First 20 Flow -Weighted Events
Minutes Composite Minutes Composite Sampled Sources of Pollutants
Mercury
c 0.07 ug/1 Below Detection Limit
7439-97-6
Molybdenum
0.58 ug/1
7439-99-7
Nickel
0.89 ug/1
7440-02-0
Selenium
0.5 ug/l
7792-49-2
Silver
c 0.07 ug/1 Below Detection Limit
7440-22-4
Thallium
c 0.05 u9/1 Below Detection Limit
7440-28-0
Vanadium
7440-62-2
Zinc
1.5 ug/l
4.2 ug/1
7440-66.6
W -A Form 3510-2F (1-92) Page VII -1 Continue on Reverse

Continued from the Front
Part C - List each pollutant shown in Table 2F-2, 2F-3, and 2F-4 that you know or have reason to believe is present. See the instructions for additional details and
uirements. Complete one table for each oulfall.
Maximum Values Average Values
include units) Include urrils Number
Pollutant Grab Sample Grab Sample of
and Taken During Taken During Storm
CAS Number First 20 Flow-Weighlad First 20 Flow -Weighted Events
(if available) Minutes Composite Minutes Composite Sampled Sources of Pollutants
Aluminum 782 ug/l 1 Material and Product Handling
7429-90-5
Color 42 units 1
Herbicides c 0.23 ug/1 1 Below Detection limnit
2,4,D
Magnesium 3.8 mg/1 1 Material and product Handling
7439-95-4
Nitrate- c 0.2 mg/1 1 Below Detection limit
Nitrite
TKN 0.97 mg/1 1 Fertilizer
7727-37.9
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flow weighted oom osite Semple.
4 5.
1. 2. 3. Number of hours between Maximum flow rate during 8.
Date of Duration Total rainfall beginning of storm measured rain event Total flow from
Storm of Storm Event during storm event and end of previous (gallonshninule or rain event
Event (in minules) (in inches) measurable rain event specify units) (gallons orspacify unlis)
August 27, 510 0.3 129 NA NA
2010
7. Provide a description of the method of lbw measurement or estimate.
EPA Form 3510-2F (1-92) Page VII -2

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The following pages section contains
Attachments from 2011 application
Note: These section attachments reference
outfalls 004, Dos and 006. Those outfalls are
being removed from storm water permit
coverage and covered by permit number
NC0038377. They are left in this attachment as
they were part of the original 2011 application
submittal

Progress Energy Carolinas, Inc.
Mayo Electric Generating Plant
National Pollutant Dischar a Elimination System Permit Number NCO038377
Attachment 6
Form 2F — Item IV -13 Narrative Description of Pollutant Sources
Taken from Mayo Electric Generating Plant's
Storm Water Pollution Prevention Plan

MATERIAL DANDLING
Four areas of coal handling were evaluated for their potential to create dust or particles. Also the
methods of controlling the dust were evaluated to ensure they were satisfactory in maintaining
dust control. The areas evaluated were the coal car unloading area, transfer boom, conveyor belt
system and coal pile.
• Coal car unloading area - The coal cars are positioned over a below grade open transfer
pit. The unloading area is equipped with a dust suppression system that is used to
minimize the generation of dust during coal car unloading. Water spray nozzles are
positioned such that as the coal car is unloaded into the transfer pit, the spray suppresses
any dust that could be created due to the unloading activity. Various conditions such as
wind, rain and coal condition dictate the need for the dust suppression system. Whenever
the operators feel the system is needed, it will be used to prevent the creation of a dust
that could enter the storm water system. Storm water drainage from this area flows (via
the ash pond) to an NPDES discharge point 002.
• Transfer boom - Another operation where there is the potential to create dust is the
transfer of coal from the conveyor belts to the coal pile. in order to minimize dust and on
as need basis, the boom is raised or lowered. Storm water drainage from this area flows
(via the ash pond) to an NPDES discharge point 002.
• Conveyor belt system - The conveyor belt system has been evaluated for the potential to
create dust. The possibility of the conveyor belt system to create dust or come in contact
with storm water has been reduced because the system is covered. Efforts are made to
ensure the conveyor belts stay covered. Storm water drainage from the majority of these
areas flows (via the ash pond) to an NPDES discharge point 002.
• Coal pile - The coal pile is known as a "live pile". This is because of the way the coal is
fed or reclaimed to the unit boilers. Coal is pulled from the bottom of the pile, therefore
reducing the possibility of dust. Stone water that comes in contact with the coal pile is
routed to an NPDES discharge point 002 (via the ash pond). Storm water drainage from
this area flows (via the ash pond) to an NPDES discharge point 002.
In spring of 2009 the FGD system went into service. The FGD system requires individual
storage piles for the needed limestone and the produced gypsum. The storage piles are located
west of the powerhouse block near the railroad tracks. Storm water that comes in contact with
limestone or gypsum is routed to an NPDES discharge point 002 (via the ash pond). The
limestone and gypsum materials are transported to and from the storage piles via dump trucks.
Gypsum haul trucks are required to be rinsed to remove any residual material prior to leaving the
plant area. The truck rinse activity is conducted inside a containment that processes the used
water through an oil water separator. Which then is routed (via the ash pond) to an NPDES
SWP3 Material Handling.doc revision 6 September 2011
DFP

discharge point 002. During transportation, the dump trucks are required to keep the material
covered.
In 2010, hydrated lime injection system for flue gas conditioning. The system consisted of silo,
truck unloading equipment and injection equipment. The truck unloading area was designed
with a secondary containment that is utilized during the truck unloading process. Closed tanker
trucks deliver hydrated lime.
In 2011, magnesium hydroxide and calcium carbonate systems are being installed to reduce coal
combustion boiler slag impact. The truck unloading area consists of secondary containment
system that includes a sump that allows any released chemical to be collected and pumped into
the correct inside material tank. Any rain water can be released (after evaluation) outside of the
containment via sheet runoff.
SWP3 Material Handling.doc revision b September 2011
DPP

Progress Energy Carolinas, Inc.
Mayo Electric Generating Plant
National Pollutant Discharne Elimination System Permit Number NCO038377
Attachment 7
Form 2F — Item IV -B Narrative description of Pollutant Sources
Taken from Mayo Electric Generating Plant's
Storm Water Pollution Prevention Plan

Outfalls
Narrative Description
Outfall 004 — Drainage from Outside Storage
This outfall is located on the northeast side of the plant site and drains to the reservoir, using
catch basins and storm sewer. The industrial activity drained to this outfall is primarily the
facility's outside storage area including a loading dock. Materials that are not weather sensitive
are stored in this area. These include empty lubricant drums, structural steel, pipes, and some
large equipment parts. Virtually the entire area is loose gravel, except for the concrete unloading
dock. There is a small storage shed in the back of the outside storage area. This shed contains
any chemicals or oils that would be stored in the area. The hazardous waste central storage area
is located in this same shed. During construction projects, a portion of the outside storage area is
being dedicated for a laydown area for material storage which consists of structural steel and
concrete truck washout area. The concrete truck washout area is controlled to ensure no free
flowing liquid leaves the area or comes in contact with any storm drains. Once the washed out
concrete is cured / dried the cured concrete is properly disposed. Due to mobile equipment, on-
site there is a potential for petroleum release.
Outfall 005 — Drainage from Industrial Area
The outfall is located on the northeast side of the facility and is the end point of the plant's
primary storm sewer system that drains the "power house block" of the plant. Including the area
around the boilers and turbine buildings, precipitators, and the roofs of the machine shops,
administrative buildings, warehouse, parking lot, and miscellaneous support facilities, such as
the water supply treatment, ash storage silo, hydrated lime silo and transformers. Also draining
to this outfall through sewers is the grassed area intended for Unit 2 at some time in the future.
At various times during construction and maintenance projects, the Unit 2 area is being utilized
as structural steel and fabrication area. This area consists of gravel and grass areas. For outfall
005 the potential pollutants could be coal, coal ash, sediment, and the chemical make-up of the
rain water. Due to mobile equipment, on-site there is a potential for petroleum release.
In 2004 a SCR installation included the need to install anhydrous ammonia storage tanks
including a truck unloading area within this area. The storage tanks and truck unloading areas
were both installed with secondary containments. The secondary containments included
normally closed valve drainage system that effluent is routed to the ash pond and into a NPDES
discharge point 002.
SWP3 Outfalls.doc revision 6 September 2011
DFP

During the 2009 FGD Scrubber installation an additional transformer was added to this area.
The transformer was installed with secondary containment with any collected rain water routed
to the existing oil water drainage and separation system. Also during this same time period the
dry flyash collection system was upgraded including the load out system with a wheel wash
system. The load out system is designed to deposit conditioned flyash into a dump truck. The
dump trucks' wheels are rinsed and the dump truck is covered prior to leaving the load out area.
In 2010, hydrated lime injection system for flue gas conditioning. The system consisted of silo,
truck unloading equipment and injection equipment. The truck unloading area was designed
with a secondary containment that is utilized during the truck unloading process. Closed tanker
trucks deliver hydrated lime.
Outfall 006a, b, c, d, e — Cooline Tower Area
Outfall 006 is located at the eastern end of the site and drains the area around the cooling towers,
including the roof of the chemical feed building and associated roads and parking areas. In the
cooling tower area, there are five separate outfalls. All these outfalls involve catch basins and
storm sewers that drain to swales and then to the reservoir. The cooling tower itself has a basin
for re -circulating cooling water and therefore, does not directly contribute to storm water runoff.
For this outfall the potential pollutants could include sediment, mist from the cooling tower and
the chemical make-up of the rainwater. A malfunction of the cooling tower basin level and 1 or
the cooling tower make-up could result in potential release of cooling tower water. Due to
mobile equipment, on-site there is a potential for petroleum release.
Outfall 007a b -- Drainage from Railroad Area
This outfall was removed from Mayo's NPDES permit requirement effective date February
2001.
Outfall 010 - Main Plant Entrance Road
Starting at the Boston Road and the main plant road intersection and traveling towards the plant,
the first approximate 100 yards drains into Mayo Plant's ash pond. The remaining of the main
plant road drainage area drains to Mayo Lake. The central drainage point for the road is located
at a low point south of the entrance to the picnic area entrance. The main plant entrance road is
being added to the SWP3 due to additional limestone and gypsum truck traffic (Spring 2009).
The potential pollutants for this area could be coal ash, limestone, gypsum, petroleum, hydrated
lime and the chemical make-up of the rain water. Limestone delivery trucks arrive on site
covered. The gypsum trucks leaving with product will be washed/rinse of any gypsum residue
before leaving the plant area. Also debris cover will cover material before leaving the plant area.
Due to vehicle traffic there is a potential for petroleum release.
SWP3 Outfalls.doc revision 6 September 2011
DFP

In 2009 recognizing the increase chemical/material transportation activity in this area, a daily
(excluding holidays and weekends) inspection of the plant entrance road was established.
In 2010, the installation of the hydrated lime injection system for flue gas conditioning resulted
in increased truck traffic. Closed tanker trucks deliver hydrated lime.
In 2011, coal conditioning system (magnesium hydroxide and calcium carbonate systems) are
being installed to improve coal combustion to improve boiler slag impact. The material is
delivered to facility via closed tanker trucks.
SWP3 Outfalls.doc revision 6 September 2011
DFP

Progress Energy Carolinas, Inc.
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System Permit Number NCO038377
Attachment 8
Form 2F — Item IV -C Narrative description of Pollutant Sources
Taken from Mayo Electric Generating Plant's
Storm Water Pollution Prevention Plan

BEST MANAGEMENT PRACTICES (BMP's)
Structural
As need or new projects develop, any additional structural BMP are evaluated and identified.
The need will be based on the assessment of potential sources that could contribute significant
quantities of pollutants to storm water discharges and data collected through monitoring of storm
water discharges. Also, any concerns noted during visual inspections will be addressed at that
time.
Containment 1 Diversion
These measures require a physical structure or barrier to be installed, to divert storm water away
from potential pollutant sources or to contain potential pollutant sources. Diversion measures
function best where runoff can be directed to a drainage channel and containment of the source is
impractical. Containment functions best in areas where material will be permanently stored,
handled, or used. Specific containment/diversion measures include:
• Segregation of the work area.
• Covering or enclosing the work area.
• Diking the work area.
• Diversion of storm water runoff, via pipes, and catch basins, or channels.
• Dust controls
Since 2000 the following projects that were evaluated and determined that structural BMPs were
needed include the following:
• 2004 SCR installation including anhydrous ammonia storage tanks
o Anhydrous ammonia storage tanks - secondary containment
o Anhydrous ammonia delivery truck unloading area - secondary containment
• 2009 FGD Scrubber installation and upgrade of dry flyash handling system
o Transformer installation - secondary containment going to oily waste collection
system
o FGD equipment location - inside with drainage back into system
o Relocation of FH double wall mobile equipment fuel oil tank- double wall tank
placed inside of a secondary containment with lock drains that flow into the oily
waste collection system
o Flyash delivered into covered dump truck
o Flyash truck wheel wash system installed (liquid routed to ash pond and into a
NPDES discharge point 002)
2010 Hydrated lime
o Delivery truck closed tanker
o Truck unloading secondary containment
•
2011 Coal conditioning system (magnesium hydroxide and calcium carbonate)
o Delivery truck closed tanker
SWP3 BMPs Struclural.doc revision 6 September 2011
DFP

o Truck unloading - secondary containment with sump to allow spill material to
place into product tank
o Product tanks located inside building with secondary containment including sump
to allow any spill material to be place into product tank
An example of a structural BMP presently in place at the Mayo Plant is that secondary
containment is provided for all above ground stationary oil storage tanks.
All areas with potential to have erosion shall have temporary BMP's until the area is stabilized
with permanent control devices. Temporary BMP Is for erosion includes silt fences, sediment
traps and basins, rock check dams and diversion dikes. Straw dams should not be used in place
of rock check dams or silt fences. Permanent structural BMP control devices include rip -rap
lined channels, grass lined channels, and landscaping that provides adequate filtration.
Periodic vacuuming of storm drain catch boxes will be conducted in high risk areas as needed.
SWP3 BMPs Structural.doc revision 6 September 2011
DFP

File; Mayo 12520-R AUG 2 0 2014
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) NumberNC0038377
Stormwater Discharge Outfall 010 Monitoring Report
Dear Sir or Madam:
In accordance with Part I .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.
1 certf; under penally of lmv, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualUled personnel properly gather and evaluate
the h1rormatlon submitted, Based on my inquiry of the person or persons who manage the.3istem, or those persons
directly responsible for gathering the information, the Infonuation submitted is, to the best ofwry knowledge and
belief, trite, accurate, and coinplete. l am Mwe that there a re signylcant penalties for submitting false
Information Including the possibilitfr of/Ines and imprisonment for knrnving violations.
Please contact Mr. Shannon Langley at [phone], if there are any questions concerning the data in
this submittal.
Sincerely,
Enclosures
,�to 0 JkA^----'
William J. Thacker- Manager
Mayo Electric Generating Plant
www duke -energy com
Mayo Steam Punt
DUKE
ENERGY,
Duke Enema Progren
PROGRESS
10M0 Boson Road
RoWxxo. NC 27574
File; Mayo 12520-R AUG 2 0 2014
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) NumberNC0038377
Stormwater Discharge Outfall 010 Monitoring Report
Dear Sir or Madam:
In accordance with Part I .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.
1 certf; under penally of lmv, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualUled personnel properly gather and evaluate
the h1rormatlon submitted, Based on my inquiry of the person or persons who manage the.3istem, or those persons
directly responsible for gathering the information, the Infonuation submitted is, to the best ofwry knowledge and
belief, trite, accurate, and coinplete. l am Mwe that there a re signylcant penalties for submitting false
Information Including the possibilitfr of/Ines and imprisonment for knrnving violations.
Please contact Mr. Shannon Langley at [phone], if there are any questions concerning the data in
this submittal.
Sincerely,
Enclosures
,�to 0 JkA^----'
William J. Thacker- Manager
Mayo Electric Generating Plant
www duke -energy com

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number. NC NOR39377 SAMPLES COLLECTED DURING CALENDAR YEAR: _2914
FACIUTY NAME Mayo Steam Electric Plant
PER5ON COLLECTING SAMPLE(S) Herbert M. Lea, Jr.
CERTIFIED LABORATORY(S) Mayo Plant Lab
PACE Analytical
Part A. 5pedfk Mrrnitoring Requirements
(fits rnonitorktg report shell be recelwed by the DWaon no liter than 30 days from
Om date the f d1ty roc lm the samOng results Tram the b,6oratory.)
County Person
Phone No. �7-7309
Lab # 506407
Lab # 40/503/S3O (5lGNATURE OF PERMITEGAAR DESIGNEE)
—�" 9t' this sisomm I anity that this report is Kongo
and complete to the best of my knowwhefte.
Does this fKMty perform Vehicle Maintenance Activities using mare than S5 gallons of new motor oil per month? No
(if yes complete Part B)
Part B: NA Ma chvnai and am Capt' to:
STORM EVENT CHARACTERISTICS ( if more then one storm event was sampled) Dildoes Of Water Quality
Date 7/21/2014 Date Attn: Central Files
Total Event P pitatlan (inches) 0.59 Total Event PTS (inches) 1617 Mall Services Ces>W
event duration (hours): 2 event duration (hours): Raleigh. North Carolina 27699.1617
I certify, under panahy of law, that this doonnent and all Mu drmeats were prepared under my dBectlon a AWmI tion In atrordwn
with a system deslBrted to assure that quaBfled
personnel properly Bather and wookate the lnfomutbn submWOML Based on my inquiry of the person or persons who manage the grstem, or those perm dkec* resporeslbk forpd-ft
the kk mstlon, the Wormation submitted b6 to the best of my k wwkdte and beW, true, accurate, end axnlge e. l am aware that there am sof ant penaWas forsubmhdni faire
mfamtatlarr, induding tiro posslbti W of anis and impm-ment for knawwlng wiola k—.' r
William J. Thacker
Permittee
J�� V e AA&S Date
( of il—emolm)

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number: NC NCDO30377 SAMPLES COLLECTED DURING CALENDAR YEAR: 2014
(a modtwre.apmt shah be mvcW d br the Dhi Om rho Facer then 30 days from
me pass ms noft remteet to sampang foo from the aborm".1
FACILITY NAME Mayo Steam Electric Plant County pen"
PERSON COLLECTING SAMPLE(S) Herbert M. Lea, Jr. Phone No. 33 7-7309
CERTIFIED LABORATORY($) Mayo Plant Lab Lab # 064
PACE Analytical Lab # 40/503/530 (SIGNATURE OF PERM-- -- O ESIGNEE)
8Vd9S slptae M I tawtHyt Ud* mpmtts atxtrrate
and ctstnpkte to she best of mY a
Part A: Specific Aft teriegRequiremeats
Does this facility perform vehicle Maintenance Activities using more than 55 gallons Of new motoroil per month? No
( if yes complete Part 8 )
Put R: NA
STORM EVENT CHARACTERISTICS
Date 7/21/2014
Total Event Precipitation (inches) 059
event duration (hours):
( If more than one storm event was sampled)
Date
Total Event Precipitation (Inches)
event duration (hours):
Mail Odginal and one copy to:
Division of Water CtuaHty
Attn: Central Files
1617 Mall Services Center
Raleigh, North Carcina 27699-1.617
•�ardh ►Penalttrortaw.thn"dzwwmandaMattadwrw=waspaIaredanderm"SvcdomvwprnAdonMramudanoewfd+aaVaemdeaiprcdmatarracwt
tiersor4W j mPahr Pdr anderairate dee k tom dm PAPA" saved on mt'Mr9*W ddwe Paaaw et tacraem slur manage the ehstan a throe Pam dku*ecis ar-:e forp.herNs
dw kJvnwrbn, dw iretorrrwlion w6ndrrad It, t4 the tart d rrT b�o+rTedRw andbikT, trke. acauate, and mnplete. I am aware that drere ae d perwF>lln rar=dwrdr!!nM �+
Mkn.to%prdud'ndtMp Td son end iopiem"m Torklw" eldadewe.-
Wiillam J. Thacker
Permitter
Date
(Signature of permineel

A DUKE
ENERGY.
PROGRESS
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
Mayo Steam Plant
Duke Energy Prvgms
10660 Boston Road
Roxboro. NC 27574
MAY 14 2014
Subject: 15A N. C. Admin. Code 2B.0506
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System (NPDES) Number NCO038377
Stormwater Discharge Outfall 010 Monitoring Report
Dear Sir or Madam.-
In
adam:
In accordance with Part I.C. Section E2 of NPDES Permit Number NCO03 9377, 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
NC0039377.
1 certify. under penalty oflast; that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qual{/iedpersonnel properly gather and evahrate
the information submitted Based on sjy 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 penaltiesforsubmillingfolse
Information, including the possibility affines and lrrtprisonment for knowing violations.
Please contact Mr. Shannon Langley at [phone], if there are any questions concerning the data in
this submittal.
Sincerely,
Enclosures
I � (4 lwle
William J. Tha r- Manager
Mayo Electric Generating Plant
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& DUKE
ENERGY.
PROGRESS
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
Mayo Steam Plant
Duke Energy Progms
10660 Boston Road
Radma. HC 27574
APR 17 2014
Subject: 15A N. C. Admin. Code 213 .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 I .C. Section E2 of NPDES Permit Number NC0038377, enclosed is the quarterly
2014 Stormwater Discharge Outfall 010 report for Carolina Power & Light Company dlb/a Progress
Energy Carolinas, Inc., now known as Duke Energy Progress, LLC (Progress) - NPDES Permit Number
NC0038377.
1 cerlify, under penalty of Imp, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that quall%Fed personnel properly gather and evaluate
the infarmalion submitted. Based on my inquiry of the person ar persons who manage the system, or those persons
directly responsible jar gathering the information, the Information submitted is, to the best of ny knowledge and
belief, into, accurate, and complete. I am aware that there a re significant penalties for submitting false
igjbrmation, including the possibility offines and imprisonment far knmving violations.
Please contact Mr. Shannon Langley at [phone], if there are any questions concerning the data in
this submittal.
Sincerely,
Enclosures 1�=
;"
William J.
cker- Manager
Mayo Electric Generating Plant
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f,:, DUKE
X. ENERGY,
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
Mayo steam Plant
Duke Energy Progress
10660 Boston Road
Roxboro, NC 27574
DEC 19 2013
Subject, 1 SA N. C. Admin. Code 213 .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 I.C. Section E2 of NPDES Permit Number NC0038377, enclosed is the quarterly
2013 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.
1 cert fy, 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 a re significant penalties for submitting false
information, including the possibility offnes 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
a"'J d �WA'
William J. Thacker- Manager
Mayo Electric Generating Plant
www duke-energy.com

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-164 DUKE
ENERGY,
;" 1. . f
File; Maya 12520-R
NC Division of Environmental Management
Division of Water Quality
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-16€7
,OCT 17 2013
Mayo Steam Plant
Duke Energy Progress
10660 Boston Road
Roxboro, NG 27574
Subject; 15A N. C. Admin. Code 2B.0506
Mayo Electric Gwicrating Plant
National Pollutant Discharge Elimination System (NPDES) Number NCO038377
Stormwater Discharge Outfall 010 Monitoring Report
Dear Sir or Madam:
In accordance with Pati I.C. Section E2 of NPDES Permit Number NC0038377, enclosed is the quarterly
2013 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
N00038377_
1 certifj', under penaltj, of lm-, that this docrunent and all attachinertts a+ere p1,epared raider ntit direction ar
supervision lir accordance with a sistent designed to assure that grealified personnel properly gather and eirahlate
the inforrnallon subadned Based an mjo inqulry of the person or persons it -ho manage the system, or those persons
directly r esponsible for gathering the information, the hrfarnrallon submitted is, to the best of nniv knoirledge and
balief, trite, accrtrate, and complete. 1 am airare that there a re signlfrcam penalties for submilting false
Information. including the possibility offlnes and imprisortrru:nt jar knowing Woladons.
Please contact Mr. Shannon Langley at [phone], if there are any questions concerning the data in
this submittal.
Enclosures
Sincerely,
A/4 4 A&
William J. Thacker Manager
Mayo Electric Generating Plant
mwr.clu ke-enct£y.com

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ti►. ENERGY.
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
Mayo Sieam Plant
Duke Energy Progress
10660 Boston Road
Roxboro, NC 27574
JUN 2 6 2013
Subject: 15A N. C. Admin. Code 213.0506
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System (NPDES) Number NCO038377
Stormwater Discharge Outfall 010 Monitoring Report
Dear Sir or Madam:
In accordance with Part I.C. Section E2 of NPDES Permit Number NC0038377, enclosed is the quarterly
2013 Stormwater Discharge Outfall 010 report for Carolina Power & Light Company d/b/a Progress
Energy Carolinas, Inc., a wholly owned subsidiary of Duke Energy Corporation - NPDES Permit Number
NC0038377.
I cert fi,, under penally of lair that this doctement and all attachments it -ere prepared under np, direction or
supervision in accordance tit°ith a s} stern designed io assure that qualifted personnel properly gather and evaluate
the information submitted, Based on .try inquiry of the person or persons wh+a manage the system, or those persons
directly responsible for gathering the h formation, the information submilted is, to the best of my knowledge and
belief, true, accurate. and complete. 1 ant curare that there a re signicant penalties jar submitting false
information. inchiding the possibility offtnes and intprisonment jar knowing violations.
Please contact Mr. Shansion Langley at [phone], if there are any questions concerning the data in
this submittal_
Enclosures
Sincerely,
Wt/ Avk
William J, Thacker- Manager
Mayo Electric Generating Plant
www dum-energy com

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Tile: Mayo 12520-R VAR 1 7 2013
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 NCO038377
Stormwater Discharge Outfall 010 Monitoring Report
Dear Sir or Madam -
In accordance with Part I.C. Section E2 of NPDES Permit Number NC0038377, enclosed is the quarterly
2013 Stormwater Discharge Outfall 010 report for Carolina Power & Light Company d/b/a Progress
Energy Carolinas, Inc., a wholly owned subsidiary of Duke Energy Corporation - NPDES Permit Number
NC0038377.
I cer10. rurder penalty of1mv, that this docinnerrt and all allachnreurs were prepared trader my direction or
supervision in accordance with as) -stem designed to assra•e that qualified personnel properly Sather and evaluatr:
the i1 formation submitted Based on my irrquhp of lire person or persons tvho nranage the system, or those persons
direct!), responsible for galhering the h formation, the information submitted is, to the best of my knou'ledge and
belief, trig accurate, and complete. I am invare that there a re slgnlficrmt penalties for subrnininb false
inforrr►atinrr hichiding rhe possibility offines and bnprrsonment far kirowing tiialations.
Please contact Mr. Steve Cahoon at [phone], if there are any questions concerning the data in this
submittal.
Sincerely,
Enclosures alJ4/�,,
William J. Thacker- Manager
Mayo Electric Generating Plant
Progress Energy Carallnas,Inc.
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Progress Energy
File: Mayo 12520-R
NC Division of Environmental Management
Division of Water Quality
ATTENTION: Ccatml Files
1617 Mail Service Center
Raleigk North Carolina 27699-1617
NOV 2 8 2012
Subject: 15A N. C. Admin. Code 2E .0506
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System (NPDES) NumberNC0038377
Storm water Discharge Outfall 010 Monitoring Report
Deur Sir or Madam:
In accordance with Part 1.C. Section E2 of NPDES Permit Number NC0038377, enclosed is the quarterly
2012 Stomnvater Discharge Outfall 010 report for Carolina Power & Light Company d/b/a Progress
Energy Carolinas, Inc., a wholly owned subsidiary of Duke Energy Corporation - NPDES Permit Number
NC0038377,
I certify; tinder ponally of law, that this document and all artachmerus were prepared tr►tder ml, direction or
supervision in accordance with a system designed to erasure that ryrutlifrerl pet sontrel properly gather and elraluate
rhe infortnallon strbrnitted Based ort my inquiry of the person or persons who manage the system, or those persons
directly responsible for• gathering the h fortuallorr, the information submitted is,, to the best of ly knowledge and
belief, trite, accurale, acrd complete. 1 am ativare that there a ve significant penahies far strbmirling false
hformatimi, hwhrding tiro possibility offines and iruprironmervfor know-ing yialations.
Please contact Mr. Steve Cahoon at [phone], if there are any questions concerning the data in this
submittal.
Enclosures
Nrrrerws brargy Curulrna& litc.
Sincerely,
William .1. 'Thacker- Manager
Mayo Electric Generating Plant

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,5-JE� � E CA#v od
Vile: Mayo 12520-R
NC Division of Environmental Management
Division of Water Quality
ATTEN'rION: Central Files
1617 Mail Service Center
Rnlei>tih. North Carolina 27699-1617
JUL 2 6 2011
Subject: I SA N. C. Admin. Code 213 .0506
Mayo Electric Generating Plant
National Pollutant Discharge EIimination System (NPDGS) Number NC0038377
5tortmwater Discharge Outrall 010 Monitoring Report
Dear Sir or Madam:
In accordance with Part l.C_ Section L-2 ofNPDES Permit Number NC0038377, enclosed is the quarterly
2012 5torinwater Discharge Outfall 010 report for Progress Energy's Mayo Electric Generating Plant.
1 cert yj% under penalty ref latie that this dncertttent and all attachments were prepared under my direction or
supers,ision in acrardanve with a st-stetn designed to ossure ilia/ qualiiji d personnel properly gather and evahrate
the it f rmalion submitted. Bused on nr), inquit), of 1he person or persons who manage the ayvetn, or those parsons
direetly respansihle for gathering the inforntrttion, the information submitted is. to the best of arY knoWedge and
helief trite. accurate, and coniplefe, I ata ctiv rre thal there a re sign Jicant petndries for suhn+iNingjalse
infarnurtion, including the passibility rof fines and imprisonment for knolving 1401nllons.
Please contact Mr. Stege Cahoon at [phone], irthere are any questions conccmin4 the data in [his
submittal.
Enclosures
PFC9 xs Enargp Carolina;, Inc
Sincerely.
,��& j d(*�
William J. Thacker- Manager
Mayo Electric Generating Plant

file: Maya 1.3530-R
NC Division of iinvironniefltal Management
Division of Water Quality
ATTENTION; Cents al Files
1617 Mail Service Center
Raleigh, North Carolina 37699-1617
Subject: ISA N. C. Admin. Code 2B4O506
Mayo Electric Generating Plant
National Pollut��nt Discharge Flimination System (NPDCS) NumberNCO038377
Discharge Monitoring Report (DMR)
be. Mr. Steve Caboon (w/enclosures)
Ms, Dulcin F. Phillips (w/enclosures)

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