NC0003425_Final Permit_20070409

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NCDENR
Mr. Cecil Rowland, Plant Manager
Roxboro Stearn Electric Plant
1700 Dunnaway Road
Semora, North Carolina 27343
Dear Mr. Rowland:
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
April 9, 2007
Subject: Issuance of NPDES Permit NC00003425
Roxboro Steam Electric Plant
Person County
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated May 9,1994 (or as subsequently amended).
This final permit includes no major changes from the draft permit sent to you on February 14, 2007.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this
letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina
General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain
other permits which may be required by the Division of Water Quality or permits required by the Division of Land
Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be
required. If you have any questions concerning this permit, please contact Sergei Chernikov at telephone number
[phone], extension 594.
cc: Central Files
;NPDES Files ----,i
Raleigh Regional Office/Surface Water Protection
Aquatic Toxicology Unit
Mr. Roosevelt Childress, EPA Region IV
Sincerely,
Alan W. Klimek, P.E.
N. C. Division of Water Quality / NPDES Unit Phone: [phone]
1617 Mail Service Center, Raleigh, NC 27699-1617 fax: [phone]
Internet: h2o.enr state.nc.us DENR Customer Service Center. 1 800 623-7748

Permit NC0003425
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PFRMTT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Carolina Power and Light Company d/b/a/ Progress Energy
Carolinas, Inc.
is hereby authorized to discharge wastewater from a facility located at the
Roxboro Steam Electric Generating Plant
NCSR 1377 near Roxboro
Person County
to receiving waters designated as Hyco Lake in the Roanoke River Basin in accordance with
effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and
IV hereof.
This permit shall become effective May 1, 2007.
This permit and the authorization to discharge shall expire at midnight on March 31, 2012.
Signed this day April 9, 2007.
,-I �/
Alan W. Klimek, P.E.
Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0003425
v
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked.
As of this permit issuance, any previously issued permit !bearing this number is no longer effective.
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions included herein.
Carolina Power o er 8v Light Company d/b/a Progress Energy Carolinas,
Inc. is hereby authorized to:
1. Continue to operate the following systems located at Roxboro Steam
Electric Generating Plant off NCSR 1377 near Roxboro in Person County:
■ Ash Pond Treatment System (Internal Outfall 002). To treat ash
transport, low volume wastewater, runoff from the ash landfill, dry flyash
handling system wash water, coal pile runoff silo wash water, storm water
runoff, cooling tower blowdown from unit number 4, and domestic sewage
treatment plant effluent. Effluent from the ash pond discharges to the
heated water discharge canal, and is ultimately released into Hyco Lake
through Outfall 003.
■ Heated Water Discharge Canal System (Outfall 003). At the point that the
discharge canal enters Hyco Lake, it contains;#low from several waste
streams including; once-through cooling later, stormwater runoff, and the
effluent from the ash pond (Outfall 002).
■ Cooling Tower Blowdown System (Internal Outfall 005). Cooling tower
blowdown from unit number 4 discharges into the ash transport system, and
ultimately flows into the ash pond (Outfall 002).
■ Coal Pile Runoff Treatment System (Outfall 006). This system handles
runoff from the coal pile and other coal handling areas, including the
limestone and gypsum piles and the truck whell wash water. These waters
are routed to a retention pond for treatment by neutralization,
sedimentation, and equalization prior to being discharged directly into Hyco
Lake.
■ Domestic Wastewater Treatment System (Internal Outfall 008). Effluent
from the treatment system flows into the ash ,pond. Effluent from the ash
pond discharges into the heated water discharge canal.
■ Chemical Metal Cleaning Treatment System (Internal Outfall 009). This
wastestream may occasionally be discharged to the ash pond treatment
system. It contains chemical metal cleaning wastes. Effluent from the ash
pond discharges into the heated water discharge canal.
■ Flue Gas Desulfurization Treatment System (Internal Outfall 010). This
waste steam is generated from blowdown from the FGD treatment unit. After
treatment in the bioreactors, effluent will be discharged into the heated
water discharge canal upstream from outfall 002, and is ultimately released
into Hyco Lake through Outfall 003.
2. After receiving an Authorization to Construct from the Division, construct
and operate a Flue Gas Desulfurization (FGD) wastewater treatment system
discharging to the ash pond discharge canal through internal outfall 002.
i
3. Discharge from said treatment works and/or outfalls at the locations
specified on the attached map into the Hyco Lake, classified as WS-V & B
waters in the Roanoke River Basin.

t. �

Permit NC0003425
PART I WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (002)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from Internal Outfall 002 (Ash
Pond Treatment System to the Heated Water Discharge Canal). Such discharges shall be limited and monitored by the Permittee as specified below,
EFFLUENTCHdRACTERISTICS�i�
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Oil and Grease
15.0 m /L 20 0 m /L
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I Total Suspended Solids I OU u niyiL i IkJU 111y/L i "IVIVIILII J
Notes:
1 Samples taken in compliance with the monitoring requirements listed above shall be taken at the ash pond discharge prior to mixing with other sources of
wastewater
The low volume waste shall be discharged to the ash pond treatment system.

Permit NC0003425
PART I' WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (003)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authonzed to discharge from Outfall 003 (Heated Water
Discharge Canal System to the Hyco Reservoir). Such discharges shall be limited and monitored by the Permittee as specified below:
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reading
Total Residual Chlorine 200 /L
2/Month Multiple Grabs
Effluent
'Total Phosphorus
Monthly Grab
Effluent
Total Nitrogen
Monthly Grab
Effluent
Temperature
Continuous Recorder
Effluent, 4C", 4U
Total Arsenic
Monthly Grab
Effluent
HWeekly
Grab
Effluent
Acute Toxicit
Quarterly Composite
Effluent
Notes:
1 Effluent sampling shall be performed on the discharge canal at the point of discharge into Hyco Lake. Samples taken in compliance with the monitoring requirements listed
above shall be taken prior to mixing with other sources of wastewater
2 Total residual chlorine shall not be discharged from any single generating unit for more than two hours per day, unless the Permittee demonstrates to the Division of Water
Quality that discharge for more than two hours is required for macroinvertebrate control The 200 pg/L limitation is an instantaneous maximum effluent limitation defined as the
value which shall not be exceeded at any time, and is to be measured during the chlorine release period. Simultaneous multi -unit chlorination is permitted. In order to meet
the two-hour limitation, the chlonnation shall be automatically controlled or a log kept of manual system operation times Monitoring is required only when chlorine is added to
the cooling water system
3 The Permittee shall operate so as to remain in compliance with the conditions outlined in the mixing zone defined in Special Condition A. (12) of this permit The temperature
of Hyco Lake at no time shall exceed the thermal water quality standard outside the mixing zone defined in Special Condition A. (12) Continuous monitoring in the mixing
zone shall be between 4C and 4D as shown on the Fishery and Temperature Survey Map (attached). These thermal limitations may be deleted or revised, as appropriate,
based upon evaluation of the results of the thermal studies.
,4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5 Acute Toxicity (Pimephales prornelas) P/F @ 90%, March, June, September and December. See Special Condition A. (8) of, is permit In lieu of the requirement in Part II,
Section A, Condition 8a, composite samples for this effluent characteristic shall consist of 24 or more grab samples of equal volumes collected at equal intervals over a 24-
hour period
The Permittee is allowed to operate Unit 3 in a once -through cooling mode from October 15 through April 30
There shall be no discharge of floating solids or visible foam in other- than trace amounts outside'a distance five (5) meters from the discharge pipe

Permit NC0003425
PART I• WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (3) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (005)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from Internal Outfall 005
(Cooling Tower Blowdown to the ash pond). Such discharges shall be limited and monitored by the Permittee as specified below.
-;-EFFL°'UEKVCHARACTERIS'�ICS
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Free Available Chlorine
200 /L 500 p, /L
2/month Multiple Grabs Effluent
Total Residual Chlorine
Monthly Multiple Grabs Effluent
Total Chromium
200 /L 200 -_ /L
2/Month Composite Effluent
Total Zinc,
1 0 m /L 1 0 m /L
2/Month Composite Effluent
The 126 Priority Pollutants (40 CFR Part 42S,
No Detectable Amount
Annual Grab Effluent
Appendix A) Exclusive of Zinc and Chromium3
Notes:
1. Effluent sampling shall be conducted at the discharge from the cooling tower prior to mixing with other waste streams. Samples taken in compliance with the
monitoring requirements listed above shall be taken prior to mixing with other sources of wastewater
2 Neither free available chlorine nor total residual chorine maybe discharged from any single generating unit for more than two hours per day, unless the
Permittee demonstrates to the Division of Water Quality that discharge for more than two hours is required for macroinvertebrate control. The 500 pg/L is a
daily maximum limitation and is to be measured during the chlorine release period The 200 pg/L limitation is an average during the chlorine release period
Monitoring is required only when chlorine is added to the cooling water system.
3 These limitations and monitoring requirements apply if these substances are added by the Permittee for cooling tower maintenance There shall be no
detectable amounts of the 126 priority, pollutants (40 CFR 423 Appendix A) contained in chemicals added for cooling tower, except for total chromium and total
zinc. Compliance with the limitations for the 126 priority pollutants in 40 CFR Section 423 13(d)(1) may be determined by engineering calculations which
demonstrate that the regulated pollutants are not detectable in the final discharge by the analytical methods in 40 CFR Part 136.
Discharge of blowdown from the cooling tower is defined as the minimum discharge of recirculation water necessary for the purpose of discharging materials
contained in the process, the further build-up of which would cause concentration in amounts exceeding limitations established by best engineering practice.
The Permittee is authorized to discharge Maintenance Drain wastewater from the Cooling Tower for Unit 4 directly to the discharge canal. Grab samples of the
following parameters are to be collected prior to mixing with other waste streams and the results shall be submitted to DWQ: pH (SU), flow (MGD) and total residual
chlorine (mg/L). The Permittee shall notify the Division of Water Quality, Raleigh Regional Office (919/571-4700), prior to draining the cooling tower, except during
non -office hour emergencies when notification must be made the next working day Total residual chlorine monitoring is required prior to a maintenance drain of''the
Unit 4 Cooling Tower only if chlorine is added to the system.

Permit NC0003425
PART I: WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (4) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (006)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from Outfall 006 (Coal Pile
Runoff Treatment System to the Hyco Reservoir). Such discharges shall be limited and monitored by the Permittee as specified below.
- ��,
NGE4UlREIVIENTS
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EFFLUENTLIMITS'��. MONI4-00
CHARACTERISTICS"a;�
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Flow
2/Month Estimate Effluent
Total Suspended Solids 50 m /L
2/Month Grab Effluent
Acute Toxics
AnnuallyGrab Effluent
H
Weekly Grab Effluent
Notes:
1. Effluent sampling shall be conducted at the point of discharge into Hyco Lake Samples taken In compliance with the monitoring requirements listed above
shall be taken prior to mixing with other sources of wastewater.
2. Acute Toxicity (Pimephales promelas, 24-hour) monitoring shall be performed in accordance with Special Condition A. (9) of this permit.
3 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts outside a distance five (5) meters from the discharge pipe.
Material storage runoff shall include rainfall to navigable waters through any discernable, confined and/or discrete conveyance from, or through, coal.

Permit NC00034'25
PART I: WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (5) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (008)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from Internal Outfall 008
(Domestic Wastewater Treatment System to the ash pond). Such discharges shall be limited and monitored by the Permittee as specified below
�EFFCUENTCHi4RA1'ERISTIC{
�` ,�u�1LIMITS:,�, ",MONITORING"REQUIREMENTS���.
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Mbnthly� Daily,
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0 015 MGD
Annual Pump Los Effluent
Biochemical Oxygen Demand 5 -da 20°C
30.0 m /L 45 0 m /L
Annual Grab Effluent
Total Suspended Solids
3020 m /L 45.0 m /L
Annual Grab Effluent
Total Ammonia as N
Annual Grab Effluent
H-
Annual Grab Effluent
Notes:
1. Samples taken in compliance with'the monitoring requirements listed above shall be taken after treatment and prior to mixing with other sources of wastewater
2. 'The pH shall not be less than 6.0 standard units, nor greater than 9 0 standard units
See Special Condition A (17).

Permit NC0003425
PART 1'. WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (6) EFFLUENT LIMITATIONS AND MONITORING REQUIREMEITTS (009)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from Internal Outfall 009 (Metal
Cleaning Wastes to the ash pond). Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT ry =k
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w, a, &-,gavmaiu-, w �.
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Once per Discharge Event Pump Logs or similar Outfall 002
reading
Total Suspended Solids
30 0 m /L 100 m /L Once per Discharge Event Grab Outfall 002
Oil and Grease
15 0 m /L 1 20 0 m /L Once per Discharge Event Grab Outfall 0 2
Total Copper
1 0 m /L 1 0 m /L Once per Discharge Event Grab Outfall 002
Total iron
1.0 m /L 1- m /L Once per Discharge Event Grab Outfall 002
Notes:
1 Samples taken in compliance with the monitoring requirements listed above shall be taken after ash pond treatment and prior to mixing with other sources of
wastewater
For the purposes of'this permit, the term "Once per Discharge Event" shall mean the discharge from Outfall 002'that occurs within 30 minutes 'from the time the fly
ash containing metal cleaning waste is discharged into the ash pond plus the calculated detention time of the ash pored

Permit NC0003425
PART I. WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (7) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (010)
During the period beginning upon commencement of the Flue Gas Desulfurization (FGD) treatment system and lasting until expiration, the Permittee is authorized
to discharge from Internal Outfall 010 (FGp blowdown) Such discharges shall be limited and monitored by the Permittee as specified below
EFF.LUENTpq`., g ." xx ° r LIMITS k "`w °�
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Total Be Ilium
Weekly
Grab
Effluent
Total Mercury'
Weekly
Grab
Effluent
Total Antimon
Quarterly
Grab
Effluent
Total Selenium
Quarterly
Grab
Effluent
Total Silver
Quarterly
Grab
Effluent
Total Vanadiurno
Quarterly
Grab
Effluent
Notes:
1 Samples taken in compliance with the monitoring requirements listed above shall be taken after bioreactor treatment and prior to mixing with other sources
of wastewater.
2. DMRs for this outfall shall be submitted only after discharge commences from the FGD system.
3. Permittee may request' reduction of monitoring frequency if data (of at least 12 data samples and covering at least one year) indicate no detection of
pollutant.

Permit NC0003425
PART I: WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
SPECIAL CONDITIONS
A (S). Acute Toxicity Testing PASS/FAIL Permit Limit (Quarterly)
The permittee shall conduct acute toxicity tests on a quarterl basis using protocols defined in the North
Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single
Effluent Concentration" (Revised -July, 1992 or subsequent versions). The monitoring shall be performed
as a Fathead Minnow (Pimephales promelas) 24 hour static test. The effluent concentration at which there
may be at no time significant acute mortality is 90% (defined as treatment two in the procedure
document). Effluent samples for self-monitoring purposes must be obtained during representative effluent
discharge below all waste treatment. The tests will be performed during the months of March, June,
September and December.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR -1) for the month in which it was performed, using the parameter code TGE6C.
Additionally, DWQ Form AT -2 (original) is to be sent to the following address:
Attention: NC DEN / DWQ / Environmental Sciences Section / Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test form
indicating the facility name, permit number, pipe number,`county, and the month/year of the report with the
notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental
Sciences Branch at the address cited above.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring
will begin immediately until such time that a single test is passed. Upon passing, this monthly test
requirement will revert to quarterly in the months specified above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly
test requirement will revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened
and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival and appropriate environmental controls, shall constitute an invalid test and will require
immediate follow-up testing to be completed no later than the last day of the month following the month of
the initial monitoring.

Permit NC0003425
PART I: WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (9) Acute Toxicity Monitoring (ANNUAL)
The permittee shall conduct annual toxicity tests using protocols defined as definitive in E.P.A. Document
EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to Freshwater and
Marine Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales promelas) 24
hour static test. Effluent samples for self-monitoring purposes must be obtained below all waste treatment.
The permittee will conduct one test annually, with the annual period beginning in January of the calendar
year of the effective date of the permit. The annual test requirement must be performed and reported by
June 30. If no discharge occurs by June 30, notification will be made to the Division by this date. Toxicity
testing will be performed on the next discharge event for the annual test requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Form (MR -1) for the month in which it was performed,
using the appropriate parameter code. Additionally, DWQ Form AT -1 (original) is to be sent to the
following address:
Attention: NC DENR / DWQ / Environmental Sciences Section / Aquatic Toxicology Unit
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened
and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
Should there be no discharge of flow from the facility during any month, the permittee will complete the
information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit
number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the
comment area of the form. The report shall be submitted to the Environmental Sciences Branch at the
address cited above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened
and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require PART I: immediate
follow-up testing to be completed no later than the last day of the month following the month of the initial
monitoring.
A. (10) Intake Screen Backwash Condition
Continued intake screen backwash discharge is permitted without limitations or monitoring requirements.

U
Permit NC0003425
PART I: WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (16) Limitations Reopener
The permit shall be modified, or revoked and reissued, to comply with any applicable effluent guideline or
water quality standard issued or approved under sections 302(b)(2)(c) and (d), 304(b)(2) and 307(a) of the
Clean Water Act, if the effluent guideline or water quality standard so issued or approved:
a. Contains different conditions or is otherwise more stringent than any effluent limitation in the
permit; or
b. Controls a pollutant not limited in the permit.
The permit as modified or reissued under this paragraph shall also contain any other requirements in the
Act then applicable.
A. (17) Domestic Wastewater Treatment Plant
The permittee shall at ail times properly operate and maintain the domestic wastewater treatment plant to
meet secondary standards as specified in Part A (5).
A. (18) Bioreactor Condition
An operation and maintenance plan, including a monitoring regimen for the bioreactor units and an
emergency response plan in the event of an upset, shall be maintained and available for inspection by
Division personnel.

,4I
Permit NC0003425
PART I: WASTEWATER MONITORING, CONTROLS AND LIMITATIONS
A. (11) Best Management Practices Plan
The Permittee shall continue to implement a Best Management Practices (BMP) Plan to control the
discharge of oils and the hazardous and toxic substances listed in 40 CFR, Part 117 and Tables II and III
of Appendix D to 40 CFR, Part 122. The plan shall include a listing of all potential sources of spills or
leaks of these materials, a method for containment, a description of training, inspection and security
procedures, and emergency response measures to be taken in'
the event of a discharge to surface waters.
Sources of such discharges may include, but are not limited to, materials storage area, in -plant site runoff,
and sludge and waste disposal areas. The BMP Plan shall continue to be maintained at the plant site and
shall be available for inspection by EPA and DWQ personnel.
A. (12) Temperature Requirements
a. Water quality standards for temperature will not apply within a mixing zone, which shall include
the North Hyco arm downstream of NC Highway 57, the main body of Hyco Lake downstream of
the confluence of the Cobbs Creek Arm and the North Hyco Arm, and the entire afterbay lake.
The area described does not include the South Hyco Arm or the first finger arms on the west side
of the lake lying upstream of the dam.
b. All water discharged from the afterbay to Hyco River shall comply with all applicable standards
including temperature standards.
c. Water within the main lake and the afterbay lake to Hyco River shall comply with water quality
standards except the temperature standards in the areas of the lake defined herein as a mixing
zone.
d. Temperature measurements made to monitor compliance with this provision shall be made at
least six inches, but not more than one foot, below We surface of the lake. A monthly average
temperature shall consist of at least five determinations' conducted on five separate days.
e. Temperature increases shall be determined as the increase in temperature above the
temperature measured at the confluence of the two southern finger arms on the north side of the
lake (NC Grid coordinates North 1,005,000 — East 1,981,000).
A. (13) Biological Monitoring
In accordance with the previously submitted biological monitoring program (as approved by the Director of
the Division of Water Quality, and as it may be amended), the Permittee shall submit results of biological
studies and monitoring programs in a manner and under schedule to be approved by the Director of the
Division of Water Quality.
i
A. (14) Cooling Tower Blowdown Discharge
Unit number 4 Cooling Tower Blowdown shall not be discharged through the maintenance drain directly to
the heated water discharge canal. Blowdown may only be discharged through the ash transport system to
the ash pond.
A. (15) PCB Prohibition
There shall be no discharge of polychlorinated biphenyl compounds such as those commonly used for
transformer fluid.

The ourii"Thnes
Roxboro, lV.C. Satu 3,,
PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT
COMMISSION/NPDES UNIT
1617 MAIL SERVICE CENTER
i RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT
r TO ISSUE A NPDES
WASTEWATER PERMIT
On the basis of thorough staff
review and application of NC General
Statute 143 21, Public law 92.500 and
other lawful standards and regulations,
the North Carolina Environmental
Management Corpmission proposes
to issue a National Pollutant Discharge
i Elimination System (NPDES)
wastewater discharge permit to the
person(s) listed below effective 45
days from the publish date of this
notice
Progress Energy, 1700 Dunnaway
Road, Semora, NC 27343 has applied
for a renewal of NPDES NC0003425
for its Roxboro Steam Electric
Generating Plant in Person County,
discharging to Hyco Lake in the
Roanoke River Basin This facility
operates two outfalls, 003 (coling water
cooling tower blowdown, domestic
wastewlter, FGD blowdown, etc), and
00¢ (coal pile runoff) Currently, total
residual Chlorine and TSS are water
quality limited This discharge may
affect future allocations in this portion
of the watershed
Written comments regarding the
Proposed perrpl will be accepted until
30 days after the publish date of this
notice All comments received prior to
that date are considered in the final
determinations regarding the
proposed permit The Director of the
NC Division of Water Quality may
decide to hold a public meeting for the
proposed permit should the Division
receive a significant degree of public
interest
Copies of the draft permit and
other supporting information on file
used to determine conditions present
in the -draft permit are available upon
request and payment of the costs of
reproduction Mal comments and/or
requests for information to the NC
Division of Water Quality at the above
address or call the Point Source
Branch at [phone], extension
363 Comments can also be emalee
to Carolyn-Bryant@ncmail net
ase include the NPDES per nit
nuliber in any communrcat,on
Int rested persons may also visit the
Dn ision of Water Quality at 512 N
Sa isbury Street, Raleigh, NC 27604'
,1148 between the hours of 8 00 a m
and 5 00 p m to review information
on file
Feb 17
February 17, 2007 .B11

February 14, 2007
MEMORANDUM
To Michael Douglass, Regional Engineer
NC DENR / DEH / Public Water Supply Section
Raleigh Regional Office
From. Sergei Chernikov, Environmental Engineer II, NPDES-West,
Division of Water Quality (fax -919-733-0719)
Subject Review of the discharge locations for the following.
Roxboro Steam Electric Plant
NC0003425
Person County
Please indicate below by March 14, 2007 your agency's position or viewpoint on the facility
listed above. We cannot issue the permit without your concurrence. Please return this form
at your earliest convenience.
RESPONSE:
This agency has reviewed the draft permit and determined that the proposed
discharge will not be sufficiently close to any existing or known proposed
public water supply intake so as to create an adverse effect on water quality.
We concur with the issuance of this permit provided the -facility is operated
and maintained properly, the stated effluent limits are met prior to discharge,
and the discharge does not contravene the designated water quality standards.
Concurs with issuance of the above permit, provided the following conditions
are met
Opposes the issuance of the above permit, based on reasons stated below, or
attached.
Signed
Date:
cc: file

J �t
Progress Energy
gv
File No: 12520B-01
_6
LJMAR 1 6 2007
DENR - VlArM QUALITY
POINT SOUR^^ [
Sergei Chernikov, Ph.D.
North Carolina Department Environment and Natural Resources
NPDES Unit
1617 Mail Services Center
Raleigh, NC 27699
March 14, 2007
RE: Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit No NC0003425
Comments to Draft NPDES Permit
Dear Dr. Chernikov:
Attached are our comments on the subject draft NPDES permit. We appreciate the opportunity
to comment. If you have any questions concerning this matter, please contact Mr. Steve Cahoon
at [phone].
I certify, under penalty of law, that this document and all attachments were prepared
under my direction or supervision in accordance with a system designed to assure that
qualified personnel properly gather and evaluate the information submitted Based on
my inquiry of the person or persons who manage the system, or those persons directly
responsible for gathering the information, the information I submitted is, to the best of my
knowledge and belief, true, accurate, and complete I am aware that there are significant
penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations
Progress Energy Carolinas, Inc
Roxboro Steam Plant
1700 Dunnaway Road
Semora, NC 27343
Respectfully yours,
Cecil E. Rowland
Plant Manager

1 td
ROXBORO ELECTRIC PLANT
DRAFT NPDES PERMIT COMMENTS
Supplement to Permit Cover Sheet
Ash pond Treatment System (internal Outfall 002). To treat ash transport water, low
volume waste water, runoff from the'as landfill, dry fly ash handling system wash water,
coal pile runoff (including truck wheel wash water), silo wash water, storm water runoff,
cooling tower blowdown from Unit number 4, and domestic sewage treatment plant
effluent. Effluent from the ash pond discharges to the heated water discharge canal, and
is ultimately released into Hyco Lake through Outfall 003.
The ash pond description should read:
Ash Pond Treatment System (internal Outfall 002). To Treat ash transport, low volume
waste water, runoff from the as landfill, dry fly ash handling system wash water, coal pile
runoff silo wash water, storm water runoff, cooling tower blowdown from Unit number 4,
and domestic sewage treatment plant effluent. Effluent from the ash pond discharges to
the heated water discharge canal, and is ultimately released into Hyco Lake through
Outfall 003.
• Coal Pile Runoff System (Outfall 006). This system handles runoff from the coal Pile
and other coal handling areas. These waters are routed to a retention pond for treatment
by neutralization, sedimentation, and equalization prior to being discharged directly yo
Hyco Lake.
The Coal Pile Runoff System should read:
Coal Pile Runoff System (Outfall 006). This system handles runoff from the coal pile
and other coal handling areas, including the limestone and gypsum piles and the truck
wheel wash water These waters are routed to a retention pond for treatment by
neutralization, sedimentation, and equalization prior to being discharged directly to Hyco
Lake.
• Flue Gas Desulfurization Treatment System (Internal outfall 010). This waste stream is
generated from blowdown from the FGD treatment unit. After treatment in the
bioreactors, effluent will be discharged into the heated water discharge canal downstream
from Outfall 002 and before the sampling point for Outfall 003
The Flue Gas Desulfurization Treatment System should read.

�W
Flue Gas Desulfurization Treatment System (Internal outfall 010). This waste stream is
generated from blowdown from the FGD treatment unit. After treatment in the
bioreactors, effluent will be discharged into the heated water discharge canal upstream
from Outfall 002, and is ultimately released into Hyco Lake through Ouitfall 003.
Section A. Final Limitations and Controls
A. (4) Effluent Limitations and Monitoring Requirements (Outfall 006)
• Note 2 states: Acute toxicity (Pimephales promelas, 24-hour) monitoring shall be in
accordance with Special Condition A. (8) of the permit.
Note 2 should read:
Acute toxicity (Pimephales promelas, 24-hour) monitoring shall be in accordance with
Special Condition A. (9) of the permit.
A. (5) Effluent Limitations and Monitoring Requirements (Outfall 008)
• Under Notes the permit states the following: See Special Condition A (17).
The Permit should read:
Under Notes the permit states the following: See Special Condition A (18).
Special Conditions
• Special condition A (10) and A (11) both refer to the Intake Screen backwash Condition.
We request Special Condition A (11) be deleted from the permit, as it duplicates Special
Condition A (10).

N
NCDENR / DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
Carolina Power and Light/Progress Energy- (Roxboro)
NPDES No. NC0003425
Facility Information
(1.) Facility Name:
Roxboro Steam Electric Plant
(2.) Permitted Flow, MGD:
Outfall 008
0 015 MGD
(6.) County:
Person
(3.) Facility Class:
NA
(7.) Regional Office:
RRO
(4.) Facility Status:
Existing
(8.) USGS Topo Quad:
Olive Hill
(5.) Permit Status:
Renewal
Stream Characteristics
(1.) Receiving Stream:
Hyco Reservoir
(2.) Subbasin:
03-02-05
(6.) Drainage Area (mi2):
(3.) SIC Code:
4911
(7.) Summer 7Q10 (cfs)
Not applicable
(4.) Stream Class:
WS -V, B
(8.) Average Flow (cfs):
Not applicable
(5.) 303(d) Listed:
No
(9.) IWC (%):
Not applicable
Summary
This is a permit renewal for an electric generating facility that uses steam turbine generation (via four
coal-fired units with a total net capacity of 2462 MW) Units Nos 1 and 2 (385 MWe and 670 MWe,
respectively) use condensers as cooling devices Units Nos 3 and 4 (707MWe and 700 MWe, respectively)
use cooling towers as cooling devices
The facility has three existing cooling water intake structures (CWISs) The source water for CWISs NOs
1 and 2 is the Hyco Reservoir The source water for CWIS no 4 is the site's cooling canal. The facility
discharges to subbasin 030205 in the Hyco Reservoir Discharges are mostly industrial, with a very
small domestic flow (internal Outfall 008) piped to the on-site ash pond. Discharges from the ash pond
(internal Outfall 002) and once -through cooling water are sent to the Discharge Canal (outfall 003). The
Discharge Canal and Coal Pile Runoff (outfall 006) both discharge to the Hyco Reservoir. The receiving
waterbody is class WS -V B.
The Hyco Reservoir is a 17 6 km2 waterbody constructed in 1963_bV CP&L_to serve _as___a cooling water
source The permit was modified on 8/10/2005 to include Flue Gas Desulfurization Blowdown (FGD).
The ESS staff has reviewed the latest environmental monitoring report that was completed by Progress
Energy in 2004. The ESS staff concurs with the conclusions of the report indicating no change in water
quality during the past five years
Permit Development
This facility is subject to EPA effluent guideline limits per 40 CFR 423- Steam Electric Power Generating
Point Source Category
Outfall 002 (Ash Pond Treatment System)- Internal discharge to the Discharge Canal
The Ash Pond Treatment System receives ash transport water, silo wash water low volume wastes cooling
tower blowdown (internal outfall 005), domestic sewage, some of the site's coal pile runoff (including truck
wheel wash water), ash landfill drainage and a portion of the site's storm water runoff. The current
permit includes BPT limits for total suspended solids (TSS) and oil and grease (O&G) per 40 CFR Section
423 12b(4), as well as a Water Quality Based mass limit for Total Selenium. All existing limits are being
retained

NPDES PERMIT FACT SHEET CP&L- Roxboro
Page 2 NPDES No. NC0003425
Outfall 003 (Heated Water Discharge Canal System)- Direct discharge of once -through cooling water,
cooling tower discharge, stormwater, and ash pond discharge to Hyco Reservoir
The current permit includes BAT limits for Total Residual Chlorine (TRC) and restrictions on duration of
chlorine addition per 40 CFR Section 423.13b(1) and (2), pH limits were included per 40 CFR
423 12(b)(1). The current permit also includes monitoring only provisions for total phosphorus, total
nitrogen, temperature (mixing zone), total arsenic and acute toxicity There are no water quality limited
parameters. All limits and monitoring provisions are being retained
Internal Outfall 005 (Cooling Tower Blowdown System)- Internal) outfall to the ash pond
The current permit contains limits for Free Available Chlorine, total chromium and total zinc per 40 CFR
Section 423 13d(1) Restrictions regarding chlorine addition are included per 40 CFR Section 423 13d(2)
and conditions pertaining to 126 Priority Pollutants are included per 40 CFR Section 423 13d(3) All
limits and monitoring requirements in the current permit are being retained There are no water quality
limited parameters
Outfall 006 (Coal Pile Runoff to Hyco Reservoir)
The current permit contains limits for pH and total suspended 'solids per 40 CFR Section 423.12b(1) and
(9), respectively The current permit also contains monitoring only requirements for acute toxicity All
limits and monitoring requirements are being retained
Outfall 008 (Domestic Treatment System) Internal outfall to ash pond
The current permit contains limits for biochemical oxygen demand (BOD), TSS and pH. Monitoring only
provisions are included for ammonia -nitrogen. All current limits and monitoring requirements are being
retained
Outfall 009 (Metal Cleaning Wastes) - Internal outfall to the ash pond
This new outfall contains effluent limits for total suspended solids, oil & grease, total iron and total
copper in accordance with 40 CFR 423 12(b)(5).
Outfall 010 (FGD Blowdown) - Internal outfall to the heated water discharge canal
This outfall contains blowdown from FGD system that will be treated in bioreactors and discharged into
the heated water discharge canal downstream from outfall 002 and before the sampling point for outfall
003
Compliance History Jan 2002 - Dec. 2006
The facility has an excellent compliance history During the review period no NOV were issued. The
compliance evaluation inspection conducted on 05/02/06 found that facility is in compliance
Instream Data
There are no instream monitoring requirement for the current NPDES permit.
RPA
Total Selenium -Outfall 002 - A reasonable potential analysis was performed for Se. The allowable
concentration is 5 9 Ib/day The maximum predicted concentration is 3 6 lb/day Since selenium doesn't
show reasonable potential and the fish advisory for selenium was removed by the Division of Public
Health the monitoring will be changed to Monthly. RPA was also conducted for As (Outfall 003). The
results of the RPA are attached
Whole Effluent Toxicitv Test:
Existing Limit 003• Acute P/F @ 90%
Recommended Limit. 003. Acute P/F @ 90%
Monitoring Schedule March, June, September, and December
The facility has been consistently passing its WET tests with one exception (June 2005). The subsequent
test passed.
Proposed Changes
Limits
Mondonng frequencies- Selenium monitoring frequency has been reduced to Monthly (Outfall 002) based
on the statistical analysis of the effluent data
Misc- Truck wheel wash water discharge to the coal pile runoff settling pond was incorporated into the
permit (Outfall 002) The truck was system is installed to remove gypsum and limestone that are used for
FGD system from truck wheels
The Sample Type for BOD and TSS for Outfall 008 was changed to Grab to be consistent with the
sampling requirements for domestic discharges of similar size.

NPDES PERMIT FACT SHEET
Page 3
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice
Permit Scheduled to Issue
State Contact
February 14, 2007 (est.)
April 12, 2007 (est)
CP&L- Roxboro
NPDES No. NC0003425
If you have any questions on any of the above information or on the attached permit, please
contact Sergei Chernikov at [phone], extension 594
Regional Office Comments:
NAME:
EPA Comments:
NAME:

REASONABLE POTENTIAL ANALYSIS
Roxboro Steam Electric Plant
TYPE
(�)
Outfall 003
NCO038377
Units
Qw = 1066 MGD
Time Penod 2002-2006
NCWQSI/,FAV/
n #Det MaxPredCw AllowahleCw
Qw (MGD) 1066
WWTP Class < WWfP Class >
Chronic Acute
7Q10S (cfs) 0
IWC (%) @ 7Q10S 100
7Q10W (cfs) 0
@ 7Q10W 100
NC
30Q2 (cfs) 0
@ 30Q2 100
ug/L
Avg Stream Flow, QA (cfs) 0
@ QA 100
Acute N/A
Rec'ving Stream Hyco Lake
Stream Class WS -V
PARAMETER
TYPE
(�)
STANDARDS &
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NCWQSI/,FAV/
n #Det MaxPredCw AllowahleCw
Chronic Acute
Arsenic
NC
10
ug/L
35 1
32
Acute N/A
�-------------------------
_ _ _
Chronic ---
10
'Legend
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
"Freshwater Discharge
3425 -RPA -As -2007, rpa
2/2/2007

`it.
REASONABLE POTENTIAL ANALYSIS
3425 -RPA -As -2007, data
a-
2/2/2007
Arsenic
Date Data
e w,/D2 L
Results
,
<
a$
15
Std my
04688
2
}
s&
25
Ar
2,24
4
°°
4
\o
,5
n
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5
<!
ao
15
e
i<,
30
15
mllFactor =
,a@
%1
30
15MaxGee
Max
� 25 L
a
|\
50
25
Maxxdo
32� L
e
ao
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30
, 5
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50,
25
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15
19
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50
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20
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21
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50
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22
50
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2
50
25
2450
25
25
<
50
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25
28`
50
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29
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20
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|/
50
25
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25
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50
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50
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200
3425 -RPA -As -2007, data
a-
2/2/2007

REASONABLE POTENTIAL ANALYSIS
Prepared by Teresa Rodriguez
Facility Name =
Roxboro CP & L
Parameter = Selenium
NPDES # =
NC0003425
Limit
5 9 Ib/day
Qw (MGD) =
Dataset=
DMR
QW (cfs) =
lbs/day
7Q10s (cfs)=
ModifiedData
< Nondetects RESULTS
IWC (%) =
Lake discharge
090
Std Dev
0 490
Receiving stream
070
Mean
0 919
Classification
050
C V
0 533
060
Sample#
0
Chronic CCC w/s7Q10 dil Acute CMC w/no dil
Frequency of Detection 090
Parameter
FINAL RESULTS, Ib/d FINAL RESULTS, ug/I
#Samples # Detects 050
Mult Factor=
1 200
Selenium
130
Max Value
3 000
Max Pred Cw
36
110
Max Pred Cw
3 600
Allowable Cw
59
73 222 050
Allowable Cw
5 900
050
Modified Data Use 0 5 Detection Limit for non -detects
050
050
150
200
166
129
135
1 16
100
080
1 00
1 30
120
140
300
1 30
120
1 80
080
1 10
1 00
060
140
200
160
100
050
050
040
050
060
050
160
090
150
080
080
080
060
090
060
090
050
080
050
040
180
060
090
080
040
060
060
060
080
060
090
040
050
080
050
050
0301