NC0003425_Renewal Request_20160101

Progress Energy
NPDES permit renewal request
Roxboro Steam Electric Plant
Permit Number: NC0003425
Person County
September 27, 2011
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!fill-in arpae arp znarAr1 fnrplitp tvnp i P 12 rharartPrc/inrhl
For Approved. OMB No. 2040-0086. Approval expires 5-31-92
FORM
U.S. ENVIRONMENTAL PROTECTION AGENCY
I. EPA I.D. NUMBER
GENERAL INFORMATION
NC0003425 T/A OD
1
F
Consolidated Permits Program
1
__
2 13 14 15
GENERAL
Read the "General Instructions" before starting.)
LABEL ITEMS
GENERAL INSTRUCTIONS
If a preprinted label has been provided,
I. EPA I.D. NUMBER
affix it in the designated space. Review the
information carefully; if any of it is
III. FACILITY NAME
incorrect cross through it and enter the
correct data in the appropriate fill-in area
below. Also, if any of the data is
preprinted
(the area to the left of the label
V. FACILITY PLEASE PLACE LABEL IN THIS SPACE
absent
space lists the information that should
appear), lease provide it in the proper fill -
MAILING LIST
in area(s� below. If the label is complete
and correct you need not complete Items
1, Ill, V, and VI(except Vl-B which must be
completed regardless). Complete all items
VI. FACILITY
if no label has been proved. Refer to the
LOCATION
instructions for detailed item descriptions
and for the legal authorization under which
this data is collected.
II. POLLUTANT CHARACTERISTICS
INSTRUCTIONS:Complete A through i to determine whether you need to submit any permit application forms
to the EPA. If you answer "yes" to any
questions, you must submit this form and the supplemental from 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 "no" if your activity is
excluded from permit requirements, see Section C of the instructions. See also Section D of the instructions
for definitions of bold-faced terims.
MAR"X""X"
MAORKFORM
SPECIFIC QUESTIONS
SPECIFIC QUESTIONS
I
ves
FORM
ves
ATTACHED
ATTACHED
A. Is this facility a publicly owned treatment works
which results in a discharge to waters of the
❑
®
❑
B. D-o-e-s-o-r-wIllthis facility (either existing or
proposed) include a concentrated animal
❑
®
❑
U.S.? (FORM 2A)
feeding operation or aquatic animal
production facility which results in a discharge
to waters of the U.S.? (FORM 28)
16
17
16
19
20
21
C. Is this facility which currently results in
®
❑
®
. Is this proposal facility (other than those described
❑
®
El
to waters of the U.S. other than
in A or B above) which will result in a discharge
22
23
24
25
26
27
those described in A or B above? FORM 2C
to waters of the U.S.? FORM 2D
DoesE. or will this facility treat, store, or dispose o
hazardous wastes? (FORM 3)
❑
®
❑
o you or will you inject at this facility industrial or
municipal effluent below the lowermost stratum
❑
®
❑
containing, within one quarter mile of the well
bore, underground sources of drinking water?
28
29
30
(FORM 4)
31
32
33
o you or will you inject at t is aci ity any
H. Do you or will you inject at t is aci dy w s for
produced water other fluids which are brought to
the in with conventional oil or
❑
®
❑
special processes such as mining of suffer by the
Frasch solution mining of minerals, in
❑
®
❑
surface connection
natural gas production, inject fluids used for
process,
situ combustion of fossil fuel, or recovery of
enhanced recovery of oil or natural gas, or Inject
geothermal energy? (FORM 4)
fluids for storage of liquid hydrocarbons?
34
35
36
37
38
39
FORM 4
I. Is this facility a proposed stationary source J. is this facility a proposed stationary source
which is one of the 28 industrial categories listed which is NOT one of the 28 industrial categories ❑ ® El
❑ ® ❑
the instructions and which will potentially emit listed in the instructions and which will potentially
100 tons per year of any air pollutant regulated emit 250 tons per year of any air pollutant
under the Clean Air Act and may affect or be regulated under the Clean Air Act and may affect
located in an attainment area? FORM 5 40 41 1 42 or be located in an attainment are? FORM 5 43 44 45
III. NAME OF FACILITY
O SKIP Roxboro Steam Electric Plant
1
15 1 16 29 30
69
IV. FACILITY CONTACT
A. NAME & TITLE last, first, &title)
B. PHONE area code & no.
Mike Mosley, Plant Manager
336 597 6101
46 48 F 49 51 52 55
2
15 1 16 d5
V. FACILITY MAILING ADDRESS
A. STREET OR P.O. BOX
ate, j r
— ---�U0
1700 Dunnaway Road
3
D. ZIP CODE'' �}
27343
15
1 16 45
B. CITY OR TOWN C. STATE
C Semora INC 1
4
15 1 16 40 41 42
1 47 51
VI. FACILITY LOCATION
A. STREET, ROUTE NO, OR OTHER SPECIFIC IDENTIFIER
1700 Dunnaway Road
5
15
1 16 45
B. COUNTY NAME
Person
46 70
C. CITY OR TOWN
D. STATE
E. ZIP CODE
F. COUNTY CODE
C
Semora
NC
1
27343
6
15
1 16 40
41 42
47 51
52 54
EPA FORM 3510-1 (8-90) CONTINUED ON REVERSE

EPA FORM 3510-1 (8-90)

Carolina Power & Light Company d%b/,a 'Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant'
National Pollutant Discharge Elimination System Permit Number NC0003425
EPA Form 3510-2C
Roxboro Steam Electric Plant
Permit Number NC-0003425
Person County,

�a EPAIDNurnber {Copy fibrnitem�`l�fForm1J�� rm . prov, -
�204 08s _
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006
36
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79 .0775
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II Flows S'our`,ces ofwall dtii ''O& d Treatment'oTie Wr dio ies
A � Attacti a ne diawnng shoinn gLthe water"flow`throughIrefar�lity�Ihdic'ate §ou ces of intake water op�e'rations ci�ntrfbuhng>Pwesteweteratb' ,,x �
the eftfuent,'an8ytreatme unit labeled to `co�spontl to the mor!,Vaet�ai'ted de§cnp on in ltem�B _Construe ;a wade balance`ort he I ne
draunng by,siiowin a verage''Rows_between i�itakes ope at<ans'.'treatment urnts, autfalis if aawate atance<cannaf be deteirni ed
(eg';'fonceitaln'mining activn es} d apictoral des ption of'thenatureand amount of,any, sou�ees of water and aityaa fectfonor ; ,°
z= " "yea �3 a��s
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ewate
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'1. Outfall Nei
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a„miY' a'L.'''"'�'dj •��'
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Once'through cooling
see:attachment3
Evaporation,
1-F
4-A
water
Discharge to
surface, waters
Ash pond discharge
See attchment 3
Neutralization,
2-K
2-C
(including low volume
oxidation,
1-U
2-A
waste, plant drainage
sedimentation,
system, domestic waste,
absorption;
3-C
oil/water separators, Unit
discharge to
4-A
4 cooling tower
surface waters
blowdown, ash landfill
and east ash pond
drainage, silo ,wash
water, ash transport
water, FGD wastewater
and stormwater runoff
006
Coal pile fun6ff
see' attachment 3
sedimentation
1-U
2-K
Limestone pile runoff
and
2-C
Stormwater
neutralization
EPA Form 3510-2C (8-90) Page 1 of 4 CONTINUE ON REVERSE

CONTINUED FROM THE FRONT
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EPA FORM 3510-2C (Rev. 2-85) Page 2 of 4 CONTINUED ON PAGE 3

EPA ID Number (Copy from`Item 1 of Form 1)
CONTINUEUFROM PAGE 2 1 NC0003425
;,1/ IN7AKE iAND,EFFLUENT CHA , TERISTflc
&`'C See,iristruction3 be ore;pr"o� eiiing=�Complet o s2t�of+tables,'G `eaCti outfall'�„RIi 'btate-the outf�ll h0 n Win`fth Spd%e prgvr d.
trd ., J °a ii,3,L�.
n � NOTE:; 7ak?les�i/ A V„ E3„arad l/=Gare�included� nose rate sheets' number V„1� throu WWII `T ��'"�,',��E� r=
D: Usettiespacetieiowflis#8nyof,th,'eilpollutantshstetl�iin Ta6ies!2c3ofrthem isuciioris K�whichyoulina for havrea nri to bei�eveis�d�sch�argf or,"°�
may bei�d�scharged�#rom any outfail For eve r poilutant#ou lis�briefly ies nbe�the ieasons you etieve,it to be'apresent and report a y anaiyti al
P0MUTANtb F W#
_ ��'oJ,° 2 SOURCE
1 PC3LLiJTANT ,'"
�f" 4 SOUFtGE � s' �
Asbestos
.Used'in insulation.
Trace amounts,ma "be
washed down drains `in picint
areas during maintenance
Uranium
Vanadium
Trace -elements occasionally,
Zirconium
_ resent in coal
Strontium
�VI MOTENTIAL DISGHARGESINOT COVERED BY ANALY,SIS�
..,.
is°�an�poilutant"listed in1ltem'.V-C a subsfan"ce o va contponen of a substance WtWfi h you currently;use or�i�anuwbre As,a llfiteimedlate or final
9„P> .- ti'`''*� 9�: `:. �' `"f'�Se,T"3iP 'Y',Y "s"N"A 3 id3 a� a,u 3i iSa3 4
product or byproduct?,r, '1 TI L ;G; ,�,, ;E.� ',� , 3 M,"
g, gkjr it
:ti, ,�"S Irst all,ac Wlutan s belc J w irrf ` �� , NOfto,. �V1 s
The following substances may be present in coal:
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury '
Nickel
Selenium
Silver
Thallium
Zinc
See attachmentZ for potential discharges not covered by'analysis
EPA FORM 3510-2C (Rev,. 8-90) Page 3 of 4 CONTINUED ON REVERSE

EPA FORM 3510-2C (Rev. 8-90) Page 4 ofA

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Carolina Power & Light Company d/b/a, Progress Energy Carolinas, Inc,
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425,
EPA Form 3510-2F
Roxboro Steam Electric Plant
Permit Number NC0003425
Person County

EPA ID Number (copy from Item 1 of Form 1) Form Approved OMB No 2040-0086
Please onnt,ortvoe n,the unshaded. areas only NC0003425 110000346386 1 Approval expires 5-31-92
FORM
2F
NPDES
A U S Environmental gency
ash ngt n, DC 20460
If. WEPA Application for Permit'to Discharge Storm Water
,Discharges Associated with Industrial Activity
Paperwork'Reduction Act Notice
Public reporting, burden for this application 4 is, estimated,to average`2&6,hours,per application, including time for reviewing instructions, searching existing data sources,
gathering and maintaining the data needed, and completing and reviewng`the,collection of information Sendicomments regarding the burden estimate, any,other,aspect
of this collection of information, or suggestions forpmproving this form, ncludng 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 Managemi6t,and!6udget,,Was6ington, DC 20503
I. Outfall Location
Foneach,outfall„hst the latitude,and longitude of its location to,the°nearest 15 seconds and the name of the,receiving water
A Outfall Number
(hso
B .Latitude
C Longitude
D Receiving Water
(name)
SW=A
36
29
16"
79
4
19
Hyco Reservoir
SW-B
36
29
10
79
4
39
Hyco Reservoir
II. Improvements
A Are you now required by any Federal, State, 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 letters, stipulations, court orders, and grant or loan conditions
1 Identification of Conditions,
Agreements, Etc
2 Affected Outtalls
3 Brief Descnption of Protect
4 Final
Compliance Date
number
source of discharge
a req
b pro1
NSA
B You may attach, add itional isheets describing any,additional water pollution (or other environmental prolects,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 construcbom
III.,Site Drainage Map
Attach a,site' map -showing topography (or ndicating'the outline,of drainage areas,served by the outfalls(s) coveredlin the application if a,topographic map is,unavallable)
depicting thelfacility 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 ouffall, each knownlpast or present areas used 'for,outdoor,storage of disposal of significant material's, each existing Istructural control measure
to reduce poll utantsirnistorm water runoff, matenalslloading and access areas, areas where pesticides, herblcides,.soil conditioners. 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,is used for accumulating hazardous waste
under 40 CFR 262134)„each well where�fluids from the facility are„injected underground,;spnngs, another surface.water bodies which received storm water discharges
fromthefacihty Seea attachment # 6 for drainage map
EPA,Form 3510-217 (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 building roofs) drained to the outfall, and an estimate of the total surface area
drained by the outfall
Outfall
Area of Impervious Surface
Total Area Drained'
Oulfall
Area of Impervious Surface
Total Area Drained
Number
(provide units)
(provide units)
Number
(provide units
(provide units)
SW -A
i
0 00 acres
21 7 acres
SW-B
I
6,4 acres
19 7'acres
B Provide a,narrabve description of significant materials thafare currently or in thepast three,years have, been,treated,`stored,or disposed in aimanner 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 runoff;,matenais loading and access areas, and the location, manner, and frequency in,which,pesticides, herbicides, soil,condiboners, and fertilizers are
applied
See attachment ,# 7
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
description 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
See attachment # 8
V. Nonstormwater Discharges
A I certify under penalty of, law hat the outfall(s) covered, by thislapphcation have been tested or evaluated for the presence,of nonstorrnwater discharges, and that all
noristorrrwater-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)
Signet"re
Date Signed
Amber Ramey, ORC
B Provide a descnpbon of the method.used, the date of any testing, and the onsite drainage points that were directly observed,during a test
SEozmwater outfalls SW -A and SW-B were visually observed during dry conditions for the presence of "non-stormwater" flows. The
visual inspection was conducted on June 15th, 2011 No "non-stormwater" flows were observed -
I. Significant Leaks or Spills
iProvide existing information regarding the history of significant'leaks or spills, of toxic or hazardous pollutants at the facility m the last three years, including the
approximate date and location of the spill or leak, and the type,and�amotint of material released
heire have been no ,significant leaks or,signifacant spi°lls of toxic or hazardous pollutants in thea"e areas in the past three
ears
EPA Form 3510-2F (1-92) Page 2 of 3, Continue on Page 3

EPA ID Number (copy from Item 1 of Form 1)
Continued from P,age.2 NC0003425 110000346386
II. Discharge Information
A, B. C, & D See instructions 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 sheeMnumben; VII-1 and'Vll-2
E Potential discharges not covered by analysis — is any toxic.poll'utant listed in table 217-2; 2F-3, or,2F-4, a,substance or a component of a substance which you
currently use or manufacture,as an intermediate,or final, product or byproduct?
✓❑ Yes,(Dst,all such pollutants below) ❑ No (go to Section IX)
Coal and limestone are used in the process Aluminum, Barium, Boron, Cobalt, Iron, Magnesium, Molybdenum, Manganese, Antimony,
Arsenic, Beryllium, Cadmium, Chromium, Lead, Mercury, Nickel, Selenium, Silver, Thal'liuin and Zinc may be present
Runoff from both the coal pile and the limestone pile is directed to a permitted NPDES wastewater outfall (006) There is no
stormwater outfall discharge from the coal pile or limestone pile
Insulation on site may contain asbestos
III. Biological Toxicity Testing Data
Do you have•any knowledge or reason to believe'that any biological test for acute or chronic toxicity has-been made on any of your discharges or on a receiving water in
relation to your discharge within the last 3 years?
❑ Yes (list all such pollutants below) ❑✓ No, (go to Section U()
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
analyzed by, each such laboratory or firm below)
A Name
B Address
C Area Code & Phone No
D Pollutants Analyzed
Pace Analytical Lab
2225 Riveraide,Drive
[phone]
All
Asheville, NC 28804
X. Certification
I certify under penalty,of'law that,thrs document a"nd alhattachments were,prepared under my direction or supervision in accordance -with a,system designed to assure
that qualified personnel ptopedy gatherand evaluatelheonformah n submitted Based,on my inquiry"of thelperson or persons who managedhe system or those persons
directly responsble,for gathering the information, the mformifton submitted is, to, the best of my'knowledge•and belief, true, accurate, and complete I am aware that
there, are significant penalties'for subrrrrtting,false information, rncludrng,the possibility oMne and rmpnsonment for knowing violations
A .Name & Official Title,(Type OrPnno
B Area Code and Phone No
Mike Mosley, plant Manager
[phone]
C Signature �
/-111
D Date Signed
/.T7 1/
EPA Form 3510-2F'(1-92) ' Page 3 of 3

Data for outfall "SW -A"
EPA ID Number (copy from Item 1 of Form 1) Form Approved OMB No 2040-0066
C0003425 110000346386 1 Approval expires 5-31-92
VII. Discharge information (Continued from page 3 of Form 2F)
Part A - You must provide the results,of at least one analysis for every pollutant in this table Complete one4able for each outfall See instructions for additional details
Pollutant'
and
CAS Number
(d available)
Maximum Values
(include units)
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 -Weighted
Composite
'Oil and Grease
<5 o mg/1
N/A
1
Biological Oxygen
"Demand (BOD5)
15 0 mg/1
1
ChemicaLOiiygen
,Demand (COD)
i - mg/1
1
Total Suspended
'Solids (TSS)
76 9 mg/1
1
Total Nitrogen
3 6 1mg/1
1
Total a Phosphorus
0 30 `mg/1
1
pH
Minimum !,0-81
Maximum 7, o8
Minimum
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'permitJor its process
wastewater (rfjthe,facitity is,operating under an existing NP,DES permit) Complete one table for each outfall See the instructions for additional details and
requirements,
Pollutant
,and
CAS,Number
(davadable)
Maximum Values
(include units)
Average,Values
(include units)
Number
of,
Storm
Events
Sampled
Sources,of Pollutants
Grab Sample
TakenrDunng
-First,20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First20
Minutes
Flow -Weighted
Composite
Copper
8 7 ug/1
1
Iron
2140 ug/11
1
Arsenic,
<5 ,0 ug/1
1
Vanadium
7-0 ug/1
1
Antimony
<5 o ,dg/l
1
Selenium
<10 0 ug/l
1'
Beryllium
<1 0 ug/1
1
Mercury
<0 2 ug/1
1
Temperature
23 0 Degrees C
1
EPA,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,of have reasbri to believe isipresent See the instructions for additional detadsiand
requirements Complete one table for each outfall
Pollutant
and
CAS Numbef,
(d available)
Maximum Values
(include units)
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`Dunng
First20
Minutes
Flow -Weighted
Composite
,NO2-NO3
Tot Org `N
0 & G
Total T
Sulfate
Aluminum
Barium
Boron
Cobalt
Magnesium
Molybdenum
Manganese
Tin
Titanium
Cadmium
Chromium
Nickel
Lead
Silver
Thallium
Zinc
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flow weighted`composrte sample
1
Date of
Storm
Event
2
Duration
of Storm Event
(in minutes)
3
Total rainfall
during storm event
(tn,rnches)
4
Number of hours between
beginning of storm measured
and end of previous
measurable rain event
5
Maximum flow rate during
rain event
(gallonalmrnute or
specify units)
6
Total flow from
ram event
(gallons or specify units)
August 13,
2011
75 minutes
1 5 inches
`144 hours
231,572 gallons
See estimate assumption
below
7 Provide a description oMhe method of flow measurement or estimate
Rational Runoff coefficient (RC) per site cover conditions Grass = 0'3,WooHs = 0 2,„Gravel = 0,6, Impervious = 0 95
Part D Item 6' 21-691.acres of which 13 424 acres are grassed and 8,.270 acres ,are wooded yields a RC of 0,262
21 '7 acres- x 1 5' inches of rain x RC of 01 262 =, 231, 572 gallons
EPA Form 3510-2F (1-92) Page VII-2

Data for SW outfall r'SW-Br'
EPA ID Number (copy from Item 1 of Form 1) Form Approved OMB No 2040-0086
C0003425 110000346386 1 Approval expires 5-31-92
VII. Discharge information (Continued from page 3 of Form 2F9
Part A — You must provide the results of at least one analysis for every pollutant�in this table Complete one table for each outfall See instructions for additional details
Pollutant
and
CAS Number
(Mavarlable)
Maximum Values
(include units)
Average�Values
(include unrtsj
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 -Weighted
Composite,
Oil and Grease
<5 0 mg/1
N/A
1
Biological Oxygen
Demand,(BOD5)
<2 0 m9/1
1
Chemical Oxygen
Demand'(COD)
lao mg/-1
1
Total Suspended
Solids (TSS)
z3o mg/1
1
Total Nitrogen
4 0 mg/,1
1
Total Phosphorus
0 17 mg/,1
1
pH
Minimum 6 gal
Maximum 6 ,98
Minimum
Maximum
1
PartIB'— 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 See the instructions for additional 'details and
requirements
Pollutant
and
CAS Number
(ifavarlable)
Maximum Values
(include units)
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 -Weighted
Composite
Copper
20 5, ug/l
1
Iron
5780 ug/l
1
Arsenic
5 1 ug/l
1
Vanadium
18 4 ug/l
1
Antimony
<5 0 ug/l
1
Selenium
<10 0 mg/l
1
Beryllium
<1 0 ug/l
1
Mercury
<0 2 ug/l
1
Temperature
22 3 degrees C,
1
EPA Form 3510-2F (1-92) Page VII-1 Continue on Reverse

Continued from the Front'
Part C - List each pollutant showniin 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
requirements Complete one table for each outfall
Pollutant
and
CAS Number
(rfavailable)
Maximum Values
(include units)
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 -Weighted
Composite
NO2- NO3
Tot Org N
O & G
Total P
Sulfate
Aluminum
'Barium
Boron
Cobalt
Magnesium
Molybdenum
Manganese
Tin
Titanium
Cadmium
Chromium
Nickel
Lead
Silver
Thallium
Zinc
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flow weighted composite sample
1
Date of
Storm
Event
2
Duration
of Storm Event
(m minutes)
3
Total rainfall
during stone event
(in inches)
4
Number of hours between
beginning of storm measured
and end of previous
measurable ram event
5
Maximum flow rate during
ram event
(gallons/minute or
specify units)
6
Total flow,from
rain event
(gallons or specify units)
June 21,
2011
84 minutes
0 16 inches
600 hours
157,204 gallons
See calculation below
7 Provide a,descnption of the method'of flow measurement or estimate
Used Rational Runoff coefficient per site cover conditions as, follows Grass = 0 3,Woods = 0 2,Gravel = 0 6 & Impervious =
'0 95
Part D item 6' Outfall,SW-B is 19 74 acres of which 6-410 is impervious, 10 240 acres is gravel 3 090 acres grass per design
documents This results in a Composite runoff coefficient (RC) `of 0 667 Rainfall event of 0 16 inches over 19 74 acres w/RC
of 0 667 = 57,204 gallons
EPA Form 3510-2F (1-92) Page VII-2

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 1
Form 1 — Item X — Existing Environmental Permits

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination, System Permit Number NC0003425
Attachment 1
Form'l — Item X—Ezisting Environmental Permit&
Issuing Agency
Type of Permit
ID'Number
Division of Water Quality
NPDES
NC0003425
NC0003425A02, NC6003425A03
NPDES — Authorization to
NC0003425A04, NC0003425A05
Division of Water Quality
Construct
NC0003425A06, NC0003425A07
NC0003425A08
Division of Water Quality
Ash Reuse Program Permit
WQ0000020
Permit to impound
Division of Land Quality
Dam Safety
PERSO-041, PERSO-040
Division of Air Quality
Title V Air Permit
01001T47
Solid Waste Permit
Division of Solid Waste
73-02
(Ash Monofill)
Solid Waste Permit (Land
Division of Solid Waste
Clearing and Inert Debris
73-D
with Asbestos )

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric ,Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 2
Form 1 - Item XI - Map

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
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1

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant,
National Pollutant Discharge Elimination System Permit Number NC0003425
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Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment '3
Form 2C - Item II - A Flows, Sources of Pollution; and Treatment Technologies

0
Z
a�
m
U
E
0
u_
Plant Process
Streams
Water Treatment
Systems
Unit 4 Cooling
Water
B ,Urnt 3,Cooling
Water'
Alternative modes
G
C _ � Unit 1 & 2
Cooling Water
F
Stormwater
—� Plant Drainage Outfall 006 H co Reservoir
System Coal Pile Runoff Treatment Basin N Y
Drams from oil
filled
equipment
containment
Low,Volume
Treatment
Collection Sump
,
�
(Oil/Water
Separator)
I
Alternate ash sluice
Umt,4 Cooling
To Atmosphere
Ash Transport
Tower
D
System
Outfal 1005
Maintenance Dram
�To Atmosphere
Unit 3 Cooling
Tower
E
Stormwater from
Gypsum Storage Pile Area
Effluent Channel
Stormwater
T
Domestic Sewage
Waste Treatment Plant HY�
' Reservoir
P
Emergency Flue Gas
Discharge Desulfur¢ation
West Emergency FGD
Ash Overflow Blowdown
-.
4Landfill
Pond L OR
East West
settling
Stormwater pond pond
K
Silo
Unit:3 Cooling 3
Wash Water
Tower°Pond Bioreactor 2
O
Outfall 002 W.
Outfall010 Flush
pond
Outfal 1003
-o Hyco
M
Reservoir
Evaporation
Attachment 3
Form, 2C — Item II A Flows,
-Sources of Pollution, and
Treatment Technologies
Page 1 September 2011

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 3
Form 2C — Item II -A.- Flow, Sources of'Pollution, and Treatment Technologies
Stream
EstimatedVAGeerage Flow
Comments
A
4
Make-up water for Water Treatment Systems
B
505
Unit 3 Cooling Water Intake
C
592
Units 1 & 2 Cooling Water Intake
D
7
Unit 4 Cooling Tower Blowdown
E
505
Unit 3 Cooling Water -Discharge
F
17.3
Unit 4 Cooling Tower Intake
G
505
Unit 3 Cooling Water Discharge
H
0 015
Sewage Treatment Plant Discharge
I
3
Low Volume discharge into Ash Pond
J
12
Ash transport into Ash Pond
K
0,17
Silo wash water
L
15
Ash Pond discharge into Discharge Canal
M
1067
Discharge Canal flow`into Hyco Lake
N
0.09
Coal Pile Runoff Pond discharge to Hyco Lake
O
1 92
Flue Gas Desulfunzation Discharge
P
5 81 (maximum)
Intake to Flue Gas Desulfunzation
K

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National 'Pollutant Discharge Elimination System Permit, Number NC0003425
Attachment 4
Form 2C - Item II-B' Flows, Sources of Pollution, and Treatment Technologies

Attachment 4
Form 2C - Item II-B Flows, Sources of Pollution, and Treatment Technologies
Introduction
The Roxboro Steam Electric Plant, 'located in Person County, North Carolina, consists
of four coal fired generating units withMarneplate generating capacities of 410.8, 657,
745.2, and 745.2 MWe for units 1, 2, `3°, and 4 respectively. All plant waste streams are
routed directly or indirectly to the Hyco Reservoir. Chemical constituents contained in
these discharges will, 'in part, 'be representative of the naturally occurring chemical
quality and quantity of the intake water and will also have chemical constituents of such
quality associated with similar discharges for fossil generating facilities of this size, type,
and in this geographical location Either all or part of the elements in the Periodic
Table, either singularly or in any combination, may from time to time be contained in the
discharges. Each component of the discharges is described below.
Outfall 003 — Effluent Channel
At the point that the effluent channel entOrs the Hyco Reservoir„ it contains'the flows
from several waste streams, including once,through cooling water, stormwater runoff,
and the effluent from the ash pond, which in turn receives and treats .combined flows
from the ash transport system, the low volume waste system, the dry fly ash handling
system, cooling tower blow down; stormwater runoff, drainage from the ash landfill, east
ash pond and from occasional wastewater piping leakage.
Once -Through Coolinq Water
Condenser Cooling Water (CCW) for Units 1, 2, and 3 is drawn'from the Hyco
Reservoir,via an intake canal and discharges to the Hyco Reservoir via a effluent
channel Flows for Units 1, 2, and 3 are 249 MGD, 342 MGD, and 505 MGD
respectively. Cooling is accomplished by evaporation from the surface of cooling
water in the effluent channel, cooling towers, mixing and convection with Hyco
reservoir waters.

During the summer months, Unit 3 CCW is routed through mechanical draft
cooling towers where most ,of the waste heat is removed by evaporation before
the water is discharged to the reservoir via the effluent channel along with the
CCW of Units 1 and 2. Additionally,, once -through cooling water is used for heat
exchange of component closed cooling water, the flow of which,'i's combined with
the CCW prior`to'introduction into the effluent channel.
Stormwater Runoff
The stormwater, which flows into the discharge canal includes runoff from the
plant drainage area, the drainage area from the dry fly ash handling system
(including roadways), Unit 4 cooling tower drainage area, the fuel oil storage
containment area, the switchyard drainage area, the anhydrous ammonia tank
farm, and the gypsum storage pile area.
Ash Pond Discharge
The ash pond receives ash'transport water, low volume wastes, runoff from the
ash landfill, landfill leachate, dry fly ash handling system wash water, blow down
from Unit 4 cooling tower, coal mill rejects and pyrites, and sewage treatment
plant -effluent The pond provides treatment by sedimentation, oxidation,
neutralization, equalization, adsorption and chemical precipitation.
Ash Transport Water
Water for sluicing ash to the ash pond is withdrawn from the CCW system
as needed The plant will primarily supply ash sluice water from Unit 2.
However, the facility will continue to maintain the ability to operate the unit
4 ash sluice pumps The Unit 4 ash sluice pumps are and will continue to
be utilized for the following i) during maintenance draining of the cooling
tower, ii) back -,up supply for the fire suppressant system, and iii) ash
sluicing pumps during operational events which require additional
2

pump_'ing. Normally, only bottom ash is conveyed to the ,ash pond by
sluicing., Fly,ash `is handled dry by,a pneumatic system and is land filled
on site or sold. If the dry fly ash handling system is out of service during
plant operating periods,, fly ash will' be sent to the ash pond via the'ash
sluicing systems until the dry'system 'is restored. Such occurrences ,are
expected, to be ;infrequent and brief.
Silo Wash Water
Ash silo wash water;runoff and,,dust,suppressanf°spray runoff, from the dry,
fly ash handling'system are, routed to the ash, pond.
Low Volume MW6-s
Boiler make=up water iswithdrawn ithdrawn from the intake and ;filtered, softened,,
andde-mineralizered fortreatment. This process includes ,treatment via a
process water reverse osmosis, system. ,Boiler water is treated with
ammonia, hydrazine; phosphate and'occasionally, ,sodium hydroxide.
Boiler, blow down is sent to the .ash ;pond via the low volume wastes
collection system (LVWS). 'These are special drains in the plant that flow
by gravity to collection sumps and are pumped to the ash pond._ Ethylene
glycol is used for freeze protection of some equipment and maybe
discharged, to the LVWS, ,as is some molybdate waste from the closed,
cooling water system, during periods of maintenance. When this
equ-ipment is rinsed„ small amounts of these chemicals are, discharged to
the low volume system via the .neutralization basin_ The plant"s Reverse
Osmosis system, produces a continuous reject wastestream of
approximately ,250 gpm. Essentially ,all plant equipment, floor drains,
water` featmeiit filter backwashes, clarifier and sedimentation basin
sludge,, and ash hopper seal water overflow also discharge to the LVWS,.
Plant drains around oil containing ,equipment are routed to an oil/water
separator forltreatment prior to being ,sent to the ash pond via the, L,VW,S.
Varibus� boiler sediments and ash accumulations collected during
3

maintenance activities may also be transported to the ash pond ,or the
onsite ash landfill. Seepage through the ash pond dam may be released
to the effluent channel.
Cooling Tower Blow down
Unit 4 is the only unit that produces cooling tower blow down. A blow
down stream is used to maintain concentrations of total dissolved solids in
the cooling tower to within proper operating limits. Make-up to the Unit 4
cooling tower is from the Heated Water Discharge Canal.
Domestic Sewage
Domestic sewage is treated by an extended aeration treatment plant
consisting of a screen, comminutor, surge tank; aeration tank, clarifier,
chlorine contact chamber, and a sludge holding tank.
Air Preheater,Cleaning (Low Volume Waste)
The aif preheater will be water washed once per year or more frequently
as needed. The wastewater from this activity'will be discharged to the ash
pond.
Chemical Metal Cleaning Wastes
The boilers are chemically cleaned approximately every five -to -eight years
as required using Tetraammonia ethylene diamine tetraaccetic acid
(EDTA) solution or citric acid. This cleaning solution and its rinses are
stored on site for'disposal by evaporation in an operating unit's furnace.
Should evaporation not be used, the wastewater can be treated by
neutralization and precipitation prior to being conveyed to the ash pond.
Alternatively, the wastewater can be disposed by other acceptable
disposal methods. Cleaning of other heat exchanger surfaces may
4

produce 5,000-10,000 gallons of wastewater approximately every three -
to -five years.
Flue Gas Desulfurization Blow down (Low Volume Waste)
The Flue Gas Desulfurization (FGD) system directs flue gas into an
absorber where limestone (calcium carbonate) slurry is sprayed. Sulfur
dioxide in the flue gas reacts with the limestone slurry to produce calcium
sulfate (gypsum) The system reclaims any un-reacted limestone slurry to
be reused in the absorber. A small blow down stream is used to maintain
the chloride concentration in the reaction tank. The blow down stream is
discharged to a gypsum settling pond where suspended solids are settled
out prior to entering a bioreactor. The bioreactor utilizes microbes to
reduce soluble contaminants to insoluble forms that then precipitate from
solution. The treated wastewater enters the ash pond effluent channel
prior to outfall 002.
Flue Gas Desulfurization (FGD) System Blow down- Emergency
Overflow/Pipeline Drain
Emergency overflow from the FGD System blow down will discharge to
the ash pond. If the FGD System blow down pipeline requires emergency
draining, the contents of the pipeline will be drained to a sump that is
pumped to the ash pond.
Ash Landfill Drainage
'Water for sluicing a minimum amount of'bottom ash to the ash landfill is
withdrawn from the ,ash transport system as needed. The, bottom ash is
used to enhance. thesubsurface drainage of the landfill.

The facility may transfer settled ash from the west ash pond to fill
remaining capacity in the east ash pond as needed This activity may be
undertaken to provide treatment capacity (i.e. volume) in the active, west
ash pond and or in preparation for landfill expansion in accordance with
permits issued through the NC Division of Solid Waste.
Stonnwater Runoff
The stormwater runoff, which flows into the ash pond includes runoff from
the plant drainage area, landfill runoff (including silo area drainage), and
the drainage area from the ash pond (including roadways).
Outfall 006 — Coal Pile Runoff
Runoff from the coal pile, limestone pile, small potential gypsum pile on the west side of
the plant, truck wheel wash and other coal handling areas of the plant is routed to a
retention pond for treatment by neutralization, sedimentation, and equalization. The
pond is designed to store in excess of the 10-year/24-hour storm event Releases are
controlled by a standpipe and skimmer discharge structure. Approximately 0.006 MGD
of wheel wash water will be sent via gravity drain to, a solids, settling basin. Solids from
the wheel wash will accumulate in a separate settling basin to be removed by front end,
loaders and sent to the. or%ite landfill. Only the waterrwill be going to the coal pile
runoff pond via the gravity drains.
3

Carolina Power & Light Company d/b/,a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 5
Form 2C -.Item VI Potential Discharges Not Covered By Analysis

Attachment 5
Form 2C - Item VI Potential Discharges Not Covered By Analysis
Chemical
Quantity
(Estimates),
Frequency
Purpose
Anhydrous Ammonia
14,000 gal/wk
per unit
As required
(Seasonal)
`Flues Gas Conditioning
Nalco 8338
385 gallons
As required'
Corrosion Inhibitor
Nalclear 8173
(flocculant)
250 Ibs
As required
Water Treatment
H-1,30 (Microbiocide)
2300 gallons
As required
Unit 4 Cooling Tower
Algae Control
Nalco 71 D5 Plus
(Antifoam Agent)
630 gallons
As required
Unit 4 Cooling Tower
Foam Control
Nalco 7396
(Polyphosphate)
11,0 gallons
Twice per day
Corrosion Inhibitor
Potable Water
Ice Free Conveyor
(Propylene glycol)
750 gallons
2100 Ibs
As required
Conveyer Belt Freeze
Protection
Aluminum Sulfate
4000 gallons
As required
Water Treatment
Sodium Chloride
100,000 Ibs
As required
Softener Regeneration
Ethylene Glycol
6,000 gallons
As required
Freeze Protection Hot
Water Coil System
Lime
2,500 Ibs
As required
Wastewater pH Control
Hydrazine
1,760 gallons
As required
Feedwater Oxygen
Ammonia Hydroxide
1,760 gallons
As required
Boiler Water pH Control
Sodium Hydroxide
200 Ibs
As required
Boiler Water pH Control
Sodium Hypochlorite
400 gallons
Twice per day
Potable Water
Treatment
BT-210W,
40,000 Ibs
(estimated)
As required
Dust Suppressant
Coaltrol 35
40,000' Ibs
As required
Dust Suppressant
'Sodium Bicarbonate
20,000 Ibs-
As required
Wastewater pH Control
Rev 09/2011

Chemical
,Quantity
Frequency
Purpose
(Estimates)
Caustic Soda (20%)
110 gallons
Twice per day
Potable Water pH
Control
Sanuril Tablets
135 Ibs
As required
Biocide for Sewage
(Calcium Hypochlonte)
Treatment
Nalclean
200 Ibs
As required
Softened Water System
'Sodium Carbonate
8,000 Ibs
As required
Air preheater wash
water neutralization
EDTA
69,000 Ibs/boiler
As required
Boiler Cleaning
A800
50 gallons/boiler
As required
Boiler Cleaning
(Chelating Agent)
M045 Silicone
15 gallons/boiler
As required
Boiler Cleaning
Antifoam Agent
GEOMELT
87,000 gallons
Winter months
Anti -icing Fluid for Coal
per month
BT-930
87,000 gallons
Winter months
Anti -icing Fluid for Coal
per month
Limestone (calcium
492,000 tons
Continuous
Flue Gas
carbonate)
Desulfurization
EN/ACT 7880
As Required
Coagulant for
Coal Pile Runoff
Sodium Hydroxide
1270 Ibs,.
As required
RO cleaning
(Approximately ,1-3
months)
Hydrochloric Acid,
1871 Ibs:
As required
RO cleaning
(Approximately 1-3
months)
RO Clean P111
675 Ibs
As required
RO cleaning
('Avista detergent
(Approximately 1-3
cleaner)
months)
RO Clean P112
675 lbs.
As required
RO Cleaning
(Avista detergent
(Approximately 1-3
cleaner)
months)
Rev 09/2011

Chemical
Quantity
Frequency
Purpose
(Estimates)
Citric Acid'
675 lbs.
As required
RO Cleaning
(Approximately 1-3
months)
Sumaclear 1000
6' gallons per day
Continuous
Filter aid'
(Poly aluminuM
chloride)
Vitec 3000
5 gallons per°day
Continuous
RO antiscalant
(Avista Antiscalant)
'Phosphate,(Nalco BT
As,needed
Internal Boiler
3400 orsimilar)
Treatment
Nalco ST70
29 gallons,per,d'ay,
As needed' j
Biofouling cotrol in
per unit
cooling, system
Nalco .7766 Plus
250 gallons peryear
As needed
Polymer used in water
treatment process
Nalco 90005
'5000 gallons per year
As needed,
Biocide used in ,cooling
tower
Hydrated lime
'20',000 tons per year
Continuous
`SO3 mitigation
Hydrogen peroxide
As needed
'As needed
°H2S mitigation and
oxegenation of
Bioreactor efflent
Alum
As needed
As needed
Aid settling in ash pond
Rev 09%2011

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric• Plant
National Pollutant Dischafrge Elimination System Permit Number NC0003425
Attachment 6
Form 2F — Item III Site Drainage Map

PROGRESS ENERGY CAROLINAS, INC.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 6
Form .2F - Item III — Site Drainage Map
The.enclosed'site, drainage map shows the areas adjacent to certain rail lines, the
north plant road and plant area from which stormwater is conveyed to Hyco
Reservoir. Stormwater from other sections of the rail line, the coal pile and
limestone pile is conveyed to the coal pile, runoff pond which is permitted through
the Plant's NPDES permit as Outfall 006.

1
N 8000
PLRNT
NORTH
O
3
2 1 3 4 15 6 7 8 9 10 11 12 13 14
\ \
CULVERT SCHEDULE
AREA DRAINED
NAD 83 GEOGRAPHIC COORO W
CULVERT
TOTAL (ACRES)
IMPERVIOUS (ACRES)
LATITUDE
LONGITUDE
A
21.7
0.0
36-29'16.0- N
79'04.19.3- W
8
19.7
6A
36'29'09.8' N
79-04.39.6- W
*AT OUTFACE POINT IN HYCO LAKE
I\1\ \ \\ �\ I �\ \ \ \ 1 �. \•.
IIII III\I\\. 1 \/^1 � \ \ � \�� I \•\ ��
Ill
/ / / / �, •. ,\\♦ `\\\ \\ \\\ \\\\\\11
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r
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lit INNWTM,
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MYCO LAKE
t3 H:��;
CULVER
c000
LEGEND
EXCLUDED AREA Imp", /01
IMPERVIOUS AREA
TRIBUTARY BOUNDARY
1
I
I /
i ftr�
III s
� IPA
SCALE IN FEET
GRID SHOW� 15 BASED ON PARSONS E&C PLANT NORTH COORDINATE SYSTEM.
-r�r✓ ��' ��..r I �� it
a
DRAWING RLFDRO—S I DRAWING REVISIONS
4 5 6 1 7 8 1 9
IA
PROGRESS ENERGY CAROLINAS, INC.
P/1F7SONS EsC POWER OPERATIONS GROUP progress Energy e -
2675 MORGANTOWN ROAD
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610-855-20DO FGD k MATERIAL HANDLING
20037154,56 4227,54944 A STORMWATER OUTFALLS ' =100 WEST - PLAN as
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Carolina Power & Light Company d/b/a Progress Energy Carolinas; Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 7
Form 2F — Item IV-B Narrative 'Description of Pollutant Sources

PROGRESS ENERGY CAROLINAS, INC.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 7
Form, 2F - Item IV B.
Progress Energy has not treated, stored or disposed of any significant materials in
a manner which allows exposure to stormwater in ,the drainage area of these
stormwater outfalls and has no plans to treat, store, or dispose of significant
materials in these areas. No materials loading or unloading activities will take
place on these rail lines. Drainage from areas where coal, limestone, and
gypsum will be stored, loaded or unloaded will drain to the coal pile runoff pond, a
NPDES permitted (wastewater) outfall to Hyco Lake. Chemicals or process that
could potentially contaminate stormwater are located in buildings or covered by
shelters Outside storage areas contain inert materials. Very minor, incidental
dusting associated with gypsum .transport may be tributary to these outfalls.
Truck wheels are washed and truck beds are covered prior to driving through this
area.
Various brands of commercial herbicides (i.e, Roundup, Crossbow) may be used
to control weeds and other unwanted plant growth for security reasons. These
herbicides will be carefully applied by licensed applicators, or persons under the
immediate supervision of a licensed applicator, in accordance with the
manufacturer's instructions. Fertilizers, pesticides, and/or soil conditions will not
be used 'in this drainage area. No hazardous waste treatment, storage, or
disposal will occur in any of, the drainage areas

Carolina Power & Light Company d/b/a Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 8
Form 2F — Item IV C Narrative Description of Pollutant Sources

PROGRESS ENERGY CAROLINAS, INC.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 8
Item IV C - Narrative Description of Stormwater Outfalls
Outfall SW -A — North Loop of Plant
The drainage area of this outfall is located north of the plant and is enclosed by a
rail line. Stormwater will flow through a 24" diameter culvert under the rail line
through riprap into a vegetated swale approximately 150 feet to Hyco Lake
Outfall SW-B — Plant Area
This outfall is located northwest of the plant and will drain a portion of the
industrial area oftthe facility. A portion of the stormwater will be routed through
vegetated ditches to a 30" diameter culvert under the rail line and will be yN f
discharged to Hyco Lake. The remaining flows are transported via drop inlet and
underground piping.
No conventional treatment will be provided for the stormwater drained from these
stormwater outfalls. Discharges from Outfall SW -A and a portion of the flow
tributary to SW-B will flow over a vegetative buffer which will provide some
filtering of pollutants from the stormwater.