NC0024406_Issuance of Permit Modification_20090409

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
April 9, 2009
Mr. Donald Faulkner, Vice President
Duke Energy
Belews Creek Steam Station
3195 Pine Hall Road
Belews Creek, North Carolina 27009
Dee Freeman
Secretary
Subject: Issuance of NPDES Permit Modification
Permit NCO024406
Belews Creek Steam Station
Person County
Dear Mr. Faulkner:
Division personnel have reviewed and approved your application for modification of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge permit. This permit modification 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 October 15, 2007 (or as subsequently
amended).
This final permit modification includes the following major changes from the draft permit sent to
you on February 11, 2009:
• A monthly average limit for Hg (Outfall 003) has been removed from the permit based on the recalculated
statistical analysis of the effluent data.
• Monitoring frequency for Hg has been reduced to Quarterly due to the removal of the limit (Outfall 002,
and Outfall 003).
• A Special Condition A. (') 316(b) Requirements was added to the permit in response to the EPA, request.
9
This final permit modification retains the following changes from the draft permit modification:
• Monitoring Frequencies for Cl and Se were reduced to Monthly based on the review of the effluent
data (Outfall 002).
• Monitoring Frequencies for As, Cd, Cr, Ni, Ag, TSS, and Zn were reduced to Quarterly based -on
the review of the effluent data (Outfall 002).
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 One
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 NorthCarohna
Internet: www.ncwaterquality.orga'����N� //� ,
An Equal Opportunity 1 Affirmative Action Employer � �/ ` l

• Monitoring Frequencies for Cl and Se were reduced to Monthly based on a statistical analysis of the
effluent data (Outfall 003).
• Monitoring Frequencies for Cd, Cr, Ni, Ag, and Zn were reduced to Quarterly based on a statistical
analysis of the effluent data (Outfall 003).
If any parts, measurement frequencies or sampling requirements contained in this permit modification 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].
Sincerely,
oleen H. Sullins
cc: .NPDES Files
Winston-Salem Regional Office / Surface Water Protection Section
EPA Region IV
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] l FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
One
NhCarohna
Awurally

s Permit NCO024406
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
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,
'Duke Energy Corporation
is hereby authorized to discharge wastewater from a facility located at the
Belews Creek Steam Station
3195 Pine Hall Road (NCSR 1908)
Belews Creek
Stokes County
to receiving waters designated as the West Belews Creek/ Belews Lake (outfall 00 1)
and the Dan River (outfall 003) 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, 2009.
This permit and authorization to discharge shall expire at. midnight on February 28, 2012.
Signed this .day April 9, 2009.
C en H. Sullins, Director
V of Water Quality
y' Authority of the Environmental Management Commission
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Permit NC0024406 ,'
k'
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.
Duke Energy Corporation is hereby authorized to:
1. Continue to discharge:
• Once through cooling water (outfall 00 1) consisting of intake screen
backwash, recirculating cooling water, station equipment, cooling water
and once -through cooling water
• Ash basin discharge (outfall 003) consisting of wastestreams from the
power house and yard holding -sumps, ash sluice lines, chemical holding -
pond, coal yard sumps, stormwater and remediated groundwater, and
treated FGD wastewater from internal outfall 002 (Outfall 002 discharges
to the ash pond)
From a facility located at Belews Creek Station, 3195 Pine Hall Road (NCSR
1908), Belews Creek in Stokes County, and
2. Discharge wastewater from said treatment works at the location specified on
the attached map into West Belews Creek/ Belews Lake (outfall 00 1) and the Dan
River (outfall 003), which are classified C and WS -IV waters, respectively, in the
Roanoke River Basin.
2

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: Permit NCO024406
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Outfall
001)
During the period beginning on the effective date of this permit and lasting -until expiration, the Permittee"is
authorized to discharge once -through cooling water and intake screen backwash from outfall 001. Such
discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT
LIMITS fhof
MONITORING REQUIREMENTS
CHARACTERISTICSIn11
4
.ifZ M /.1; Pi
iSC..
Monthly, Daily` ,
Measurement ��Sample Type Sample Locations '
,
`Frequency
,Average ....F;Maximum ,
.:
Flow
Continuous Pump Logs Effluent
Temperature oC OF
Daily Recorder/Grab Upstream
Temperature oC (of)2 '
32°C
Daily Recorder/Grab Downstream
Temperature -C T
Daily Recorder/Grab Effluent
Notes:
1. Samplinglocations.: Upstream - Upstream at Southern Railroad crossing of Belews Creek OR East Belews
Creek (site 405 or site 419), Downstream - Downstream at the discharge from the Dam. Upstream .
temperature samples are to be measured one foot below the surface. .
2. In no case should the ambient temperature exceed 32oC (89.6oF) as a result of Belews Creek Steam
Station operations. The ambient temperature shall be defined as the daily average downstream discharge
water temperature. In cases where the Permittee experiences equipment problems and is -unable to obtain
daily temperatures from the existing temperature monitoring system, monitoring must be reestablished
within five working days.
C
Chlorination of the once through condenser cooling water and/or auxiliary cooling water,
discharged through outfall 001, is not allowed under this permit. Should Duke Power wish to
chlorinate its condenser cooling water, a permit' modification must be requested and received
prior to commencing chlorination.
r
There shall be .no discharge of floating solids or visible foam in other than trace amounts.
3

Permit NCO024406 '
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Internal
Outfall 002)
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge from Internal Outfall 002 (treated FGD wet scrubber wastewater to ash settling basin).
Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERI$TICSM
LIMIT$ }c s MONITORING REQUIREMENTS'
Monthly
"Average
Daily Measurement , Sample Type Sample LocatioM
Maximum "Trequenqy
Flow
Monitor and Report
Monthly
Pump Logs or similar
readings
Effluent
Total Suspended solids
Monitor and Report
Quarterly
Grab
Effluent
Total Arsenic
Monitor and Report
Quarterly
Grab
Effluent
Total Cadmium
Monitor and Report
Quarterly
Grab
Effluent
Total Chromium
Monitor and Report
Quarterly
Grab
Effluent
Chloride
Monitor and Report
Monthly
Grab
Effluent
Total Mercury
Monitor and Report
Quarterly
Grab
Effluent
Total Nickel
Monitor and Report
Quarterly
Grab
Effluent
Total Selenium
Monitor and Report
Monthly
Grab
Effluent
Total Silver
Monitor and Report
Quarterly
Grab
Effluent
Total Zinc
Monitor and Report
Quarterly
Grab,
Effluent
Notes:
1. Effluent shall be defined as the discharge from the FGD wastewater treatment prior to discharge to the
ash settling basin.
All flows shall be reported on monthly DMRs, should no flow occur during a gicven month, the words "No Flow"
shall be clearly written on the front of the DMR. All samples shall be of a representative discharge.
Sampling is only required when this outfall is discharging.
0

' Permit NCO024406
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge from outfall 003 (ash settling pond) to the Dan River. Such discharges shall be limited
and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
4
rr
""
Monthly'
Average;.
LIMITS `< 4 MONITORING REQUIREMENTS
: Daily :. Measurement Sample Type Sample Location ",
Maximum Frequenc ' ° ` h'
Flow
Weekly .
Pump logs or
estimate
Effluent
Oil and Grease'
15.0 m /L
20.0 m /L
Quarterl l
Grab
Effluent
Total Suspended Solids'
30.0 m /L
100.0 m /L
Quarterly'
Grab
Effluent
Total Arsenic
Quarterly
Grab
Effluent
Total Cadmium
Quarterly
Grab
Effluent
Total Chromium
Quarterly
Grab
Effluent
Chloride
Monthly
Grab
Effluent
Total Iron
1.0 m /L
Quarterly
Grab
Effluent ,
Total Copper
1.0 m /L
Quarterly
Grab
Effluent
Total Nickel
Quarterly
Grab
Effluent
Total Selenium
Monthly
Grab
Effluent
Total Silver
Quarterly
Grab
Effluent
Total Zinc
Quarterly
Grab
Effluent
Fluoride
Quarterly
Grab
Effluent
Total Phosphorus
Quarterly
Grab
Effluent
Total Nitrogen NO2 + NO3 + TKN
Quarterly
Grab
Effluent ,
Sulfates
Monthly
Grab
Effluent
Chronic Toxicit 2
Quarterly
Grab
Effluent
H3
2/Month
Grab
Effluent
Total Mercury
Quarterly
Grab
Effluent
lyotes:
1. Quarterly monitoring for TSS, oil and grease and all toxicants shall be performed concurrently
with the Chronic Toxicity test.
2. Whole Effluent Toxicity shall be monitored by chronic toxicity (Ceriodaphnia) P/F at 19%. Tests
shall be conducted in February, May, August and November (see Part A.(7.) for details).
3. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be
monitored 2/month upstream of the confluence of the discharge and the receiving waters by grab
sample.
The coal pile runoff and low volume wastes shall be discharged into the ash settling
pond.
There. shall be no discharge of floating' solids or visible 'foam in other than trace
amounts.
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Permit NC0024406 ' `
A. (4.) SPECIAL CONDITIONS
The following special conditions are applicable to Belews Creek Stearn Station under NCO024406:
• There shall be no discharge of polychlorinated biphenyl compounds such as those commonly
used for transformer fluid.
• Outfall 006 - The monitoring requirements for this internal discharge have "been relocated to the
actual discharge location (outfall 003) as of the February 1, 1998 NPDES permit. This discharge
must remain internal and discharge to the ash pond. If discharge to the ash pond is relocated to
surface waters of the state, then the monitoring requirements for this discharge will be
reinstated.
• Continued intake screen backwash and non -contact cooling water are permitted without
limitations or monitoring requirements.
• Nothing contained in this permit shall be construed as a waiver by the Permittee or any right to a
hearing it may have pursuant to State or Federal laws or regulations.
• The term "low volume waste sources" means, taken collectively as if from one source, wastewater
from all sources except those for which specific limitations are otherwise established in this part.
Low volume wastewater sources include, but are not limited to: wastewater from wet scrubber air
pollution control systems, ion exchange water treatment system, water treatment evaporator
blowdown, laboratory and sampling streams, boiler blowdown, floor drains, cooling tower basin
cleaning wastes, and recirculating service water'systems. 'Sanitary and air conditioning wastes
are not included.
• The term "chemical metal cleaning waste" means any wastewater resulting from cleaning any
metal process equipment with chemical compounds, including, but not limited to, boiler tube
cleaning.
• It has been determined from information submitted that the plans and procedures in place at
Belews Creek Steam Station are equivalent to that of a BMP.
•, Discharge of any product. registered under the Federal Insecticide, Fungicide, and Rodenticide Act
to any waste stream which may ultimately be released to lakes, rivers, streams or other wasters
of the United States is prohibited unless specifically authorized elsewhere in this permit.
Discharge of chlorine from the use of chlorine gas, sodium hypochlorite, or other similar
chlorination compounds for disinfection in the plant potable and service water systems and in
sewage treatment is authorized.' Use of restricted use pesticides for lake management purposes
by applicators licensed by the N.C. Pesticide Board is allowed.
• The Permittee shall report all visible discharges of floating materials, such as an oil sheen, to the
Director when submitting DMRs
• If the Permittee, after monitoring for at least six months, determines that the facility is
consistently meeting the effluent limits contained herein, the Permittee may request of the
Director that the monitoring requirements be reduced to a lesser frequency.
• The Dan River Monitoring Plan, Phase III, as referred in the Engineering Report dated June 10,
1983 and submitted to DWQ, shall continue to be conducted.

Permit NCO024406
A. (5.) SPECIAL CONDITON - BOILER CLEANING WASTES
It has been demonstrated that under certain conditions it is possible to reduce the concentration of
metals in boiler cleaning wastes in the range of 92-99+ .percent by treatment in ash ponds. Because
of dilution problems and the existence of boundary interface layers at the extremities of the plume, it
is difficult to prove beyond doubt that the quantity of iron and copper discharge will always be less
than one milligram per liter times the flow of metal cleaning when treated in this manner.
The application of physical/ chemical methods of treating wastewater has also been demonstrated to
be effective in the treatment of metal cleaning wastes. However, the effectiveness of ash pond
treatment should be considered in relation to the small differences in effluent quality realized
between the two methods.
It has been demonstrated that the presence of ions of copper, iron, nickel and zinc in the ash pond
waters was not measurably increased during the ash pond equivalency demonstration at the Duke
Power Company's Belews Creek Steam Station. Therefore, when the following conditions are
implemented during metal cleaning procedures, effective treatment for metals can be obtained at this
facility:
1. Large ash basin providing potential reaction volumes in the ratio of 100 to 1.
2. Well-defined shallow ash delta near the ash basin influent.
3. Ash pond pHs of no less than 6.5 prior to metal cleaning waste addition.
4. Four days retention time in ash pond with effluent stopped.
5. Boiler volume less than 86,000 gallons.
6. Chemicals for cleaning to include only one or more of the following:
a. Copper removal step- sodium bromate (NaBr02), ammonium carbonate ((NH4)2CO3-H2O,
and ammonium hydroxide (NH40H).
b. Iron removal step - hydrochloric acid (HCl), ammonium bifluoride ((NH4)HF2 and
proprietary inhibitors.
7. Maximum dilution of wastewater before entering ash pond: 6 to 1.
8.
if monitoring of basin effluents (as required by the permit) after treatment of metal cleaning
wastes reveals discharges outside the limits of the permit, Permittee will:
} 1) re -close the basin' discharge,
2) conduct such in -basin sampling as necessary to determine the cause of
nonconformance,
3) take appropriate corrective actions, and
4) file a report with EPA including all pertinent data.
A. (6.) SPECIAL CONDITION FOR ASH POND DISCHARGE
Beginning on the effective date of this permit and lasting until expiration, there shall be no discharge
of plant wastewater to the ash pond unless the Permittee provides and maintains at all times a
minimum free water volume (between the top of the sediment level and the minimum discharge
elevation) equivalent to the sum of the maximum 24-hour plant discharges plus all direct rainfall and
all runoff flows to the pond resulting from a 10 -year, 24-hour rainfall event, when using a runoff
coefficient of 1.0. During the term of the permit, the Permittee shall remove settled material from the
ponds or otherwise enlarge the available storage capacities in order to maintain the required
minimum volumes at all times. The Permittee shall determine and report to the permit issuing
authority the following on an annual basis:
1) the actual free water volume of the ash pond,
2) physical measurements of the dimensions of the free water volume in sufficient detail to allow
validation of the calculated volume, and
3) a certification that the required volume is available with adequate safety factor to include all
solids expected to be deposited in the pond for the following year.
Present information indicates a needed volume of 86.2 acre-feet in addition to solids that will be
deposited to the ash pond; any change to plant operations affecting such certification shall be
reported to the Director within five days.
NOTE: In the event that adequate volume has been certified to exist for the term of the permit,
periodic certification is not needed.
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Permit -NCO024406
A. (7.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 19.0%.
The permit holder shall perform at a minimum, quarterlU'monitoring using test procedures outlined
in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,
or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months
of February, May; August and November. Effluent sampling for this testing shall be performed at
the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple -concentration testing shall be performed at a minimum,
in each of the two following months as described in "North Carolina Phase II Chronic Whole
Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR -1) for the months in which tests were performed, using the
parameter code TGP313 for the pass/fail results and THP313 for the Chronic Value. Additionally, DWQ
Form AT -3 (original) is to be sent to the following address:
Attention:. North Carolina Division of Water Quality
Environmental SciencesSection
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, accurate, include all supporting chemical/ physical measurements and
all concentration/ response data, and be certified by laboratory supervisor and ORC or approved
designate signature. 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 the permittee
fail to monitor during a month in which toxicity monitoring is required, monitoring will be required
during the following month. Should any test data from this monitoring requirement 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. If the Permittee monitors any pollutant more frequently then required by this permit, the
results of such monitoring shall be included in the calculation & reporting of the data submitted on
the DMR & all AT Forms submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such- as minimum
control organism survival, minimum control organism reproduction, 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 NCO024406
A. (8.) BIOCIDE CONDITION
The Permittee shall not use any biocides except those approved in conjunction with the -permit
application. The Permittee shall notify the Director in writing not later than ninety (90) days prior to
instituting use of any additional biocide used in cooling systems which may be toxic to aquatic life
other than those previously reported to the Division of Water Quality. Such notification shall include
completion of Biocide Worksheet Form 101 and a map locating the discharge point and receiving
stream. Completion of Biocide Worksheet Form 101 is not necessary for those outfalls containing
toxicity testing. Division approval is not necessary for the introduction of a new biocide into an
outfall currently being tested for toxicity.
A. (9.) 316(b) REQUIREMENTS
The facility shall continue to properly operate and maintain the CWIS.

DENR/DWQ
AMENDEDFACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO024406
Facility Information
Applicant/Facility Name:
Duke Energy Corporation- Belews Creek Steam Station
Applicant Address:
13339 Hagers Ferry Road; Huntersville, North Carolina 28078
Facility Address:
3195 Pine Hall Road; Belews Creek, NC 277009
Permitted Flow
No flow limit
Type of Waste:
Industrial (100%);
Prim.SIC Code: 4911
Facility/Permit Status:
Class I /Active; Major Modification
County:
Stokes County
Miscellaneous
Receiving Stream:
Belews Lake (001)
and Dan River (003)
Regional Office:
Winston-Salem
(WSRO
Stream Classification:
C (Belews Lake),
WS -IV (Dan River)
State Grid /USGS Quad:
B18SEBelews Lake
303(d) Listed?
Belews Lake (fish
advisory - selenium
Permit Writer:
Sergei Chemikov
Subbasin:
03-02-01
Date`. <- :_ ;:
1/27/09
Drainage Area (Mi):
501 (Dan River)
001: Lat. 36°16' 49.5" N Long. 80° 03' 39.8" W
002: Lat. 36018' 22.0" N Long. 80° 04' 50.77 W
006: Lat. 360 17' 5.0" N Long. 80° 04' 18" W
Summer 7Q 10 cfs
80 (Dan River)
Winter 7Q1.0 (cfs):.
160 (Dan River)
30Q2 (cfs)
195 (Dan River)
Average Flow (cfs):
576 (Dan River)
IWC (%):
19
BACKGROUND
Duke Energy's Belews Creek Steam Station is a coal fired steam electric plant in Stokes County.
The facility has three permitted outfalls in the current NPDES discharge permit, issued in November
2007. The sources of wastewater for these outfalls include non -contact cooling water, ash basin
discharge, sanitary waste, cleansing and polishing water and stormwater from process areas.
In compliance inspection reports, the Winston-Salem Regional Office describes the facility as
providing excellent treatment and as generally being well operated and maintained with few compliance
problems.
In addition to NPDES Permit NC0024406, the facility also holds the following. permits:
01983R12 (air pennit), NCD000856591 (Hazardous wastes), 85-03 (industrial landfill), and WQ0005873
(spray irrigation permit). The current permit expires February 28, 2012.
The outfalls are defined as follows:
001: Once Through Cooling Water
001 discharges non -contact cooling water used to cool the equipment and condense
exhaust steam from the turbines. No chemicals are added to the water. Non -contact cooling
water for the station equipment, recirculated cooling water coolers and hydrogen and oil coolers.
Intake screen backwash (from which the debris has been collected and composted) is, also
discharged through this outfall. 001 discharges to Belews Lake.
003: Ash Basin
003 discharges the "process flow" that is regulated under federal effluent guidelines, 40
CFR Part 423. This discharge consists of flow from the power house sumps, the yard holding
sump, the ash sluice lines, the chemical holding pond, the coal yard sumps, groundwater
Fact Sheet
NPDES NCO024406
Page 1

remediation system, , stormwater, domestic wastewater, and FGD system blowdown. 003
discharges to the Dan River.
002 (internal outfall): FGD Wastewater
002 discharges treated FGD wastewater to the Ash basin. These wastes are sent to the
chemical holding pond, which then discharges through 003. boiler and filter cleaning wastes on
an as -needed basis. These wastes are sent to the chemical holding pond, which then
discharges.through 003.
This facility does not require a 316(a) variance.
The facility has made following requests in regards to monitoring:
Outfall 002
• Reduce to monthly: Chloride and Se
• Eliminate: As, Cd, Cr, Hg, Ni, Ag, TSS, and Zn.
Outfall 003
• Reduce to monthly: Chloride and Se
• Eliminate: As, Cd, Cr, Hg, Ni, Ag, and Zn.
INSTREAM MONITORING
This facility discharges to both Belews Lake (001) and the Dan River (003). Belews Lake and the Dan
River are 303(d) listed as of 2006.
DMRS were reviewed from January 2004 through November 2008. The facility has no
significant impact on the receiving water bodies.
_REASONABLE POTENTIAL ANALYSIS (RPA)
The Division conducted EPA -recommended analyses to determine the reasonable potential for toxicants
to be discharged by this facility (please see attached).
TOXICITY TESTING:
Type of Toxicity Test: Chronic P/F
Existing Limit: 003: Chronic P/F @ 19%
Recommended Limit: 003: Chronic P/F @ 19%
Monitoring Schedule: February, May, August, November
The facility has been consistently passing its WET tests during the past 5 years.
COMPLIANCE SUMMARY:
Annual facility inspection conducted on 05/15/2008 found the facility in compliance.
Records indicate that facility had no violations since 2004.
SUMMARY OF PROPOSED CHANGES
Monitoring Frequencies:
• Monitoring Frequencies for Cl, Se, and Hg were reduced to Monthly based on the
review of the effluent data (Outfall 002).
• Monitoring Frequencies for As, Cd, Cr, Ni, Ag, TSS, and Zn were reduced to
Quarterly based on the review of the effluent data (Outfall 002).
• Monitoring Frequencies for Cl, Se, and Hg were reduced to Monthly based on a
statistical analysis of the effluent data (Outfall 003). .
Fact Sheet
NPDES 'NC0024406
Page 2

Monitoring Frequencies for Cd, Cr, Ni, Ag, and Zn were reduced to Quarterly
based on a statistical analysis of the effluent data (Outfall 003).
• Limits: A monthly average limit for Hg has been added to the permit (Outfall 003).
This limit is based on a statistical analysis of the effluent data.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice:
Permit Scheduled to Issue:
February 10, 2009.
April 6, 2009.
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please contact
Sergei Chernikov at [phone].
CHANGES TO THE FINAL PERMIT
Sampling results for Hg that was obtained on 03/17/08 was removed from the
consideration due to the following explanation provided by Duke Energy:
1. Early on we had several issues with the company doing the low level mercury*
sampling. Specifically it was noted that for the week of March 19, 2008 in the low
level mercury sampling that:
a. Water and grass found in "inner clean mercury sampling bag".
b. Elevated low level mercury blanks (> 0.5 ng/L) required raising of reporting
limits to 1 ng/L. Prior to this sequence of events - mercury blanks had been
running < 0.5 ng/L. Some samples did not meet the 5X rule (sample cone: must
be 5X blank cone. to be considered valid).
2. The ash basin at Belews Creek is very large and has a lengthy retention time (at least
several weeks). The results the week before and after the outlier were 2.5 ppt on March
10, 2008 and 3.6 ppt on March 24, 2008. If the sample on March 17, 2008 was not due
to contamination and was due to the concentration in the ash basin then you would
expect the results on March 10, 2008 and March 24, 2008 to be higher to reflect a
gradual increase to the 36.4 ppt level. That was not the case and all the values besides
this one have been below 6 ppt with most of them being below 2 ppt.
• A monthly average limit for Hg has been removed from the permit based on the
recalculated statistical analysis of the effluent data.
• Monitoring frequency for Hg has been reduced to Quarterly due to the removal of the
limit (Outfall 002 and Outfall 003).
• A Special Condition A. (8.) 316(b) Requirements was added to the permit in response to
the EPA request.
a I
Fact Sheet
NPDGS NCO024406
Page 3

BELEWS CREEK DRAFT NPDES PERMIT
Subject: BELEWS CREEK DRAFT NPDES PERMIT
From:"Wylie, Robert R" <[e-mail]>
Date: Tue, 10 Mar 2009 14:08:53 -0400
To: Sergei Chernikov <[e-mail]>
CC: "Martin, Melonie Y" <[e-mail]>
Sergei,
Duke Energy representatives have reviewed the draft NPDES permit and offer the following comments:
Outfall 001
Remove "F" from the limit page. Right now the draft has thermal limits in both "C" and 'T" and it
provides'less confusion if it is just listed in "C". The current NPDES permit lists the limit and
measurement unit as only "C".
Outfall 003 (ash basin discharge)
Remove the monitoring requirements for Mercury based on the one sample that was an outlier and our
communications.
Remove notes 2 ,. 3 and 6.
A.(4,.) SPECIAL CONDITIONS l
Chemical metal cleanings are conducted- according to what is described in the NPDES permit application
or if a change occurs NCDENR will be contacted. The process used at Belews Creek is not exactly what
was identified in the Duke Power Equivalency Demonstration. So Bullet 6 should have the last sentence
removed that references the Equivalency Demonstration.
A.(5) SPECIAL CONDITION — BOILER CLEANING WASTES
Delete this section. This language is similar to what is put into other Duke NC fossil station's permits.
However at Belews Creek the process is not exactly as what is outlined in the Equivalency
Demonstration.
Please advise if you have questions or need additional information.
Thanks,
Robert Wylie
Water Management
Environmental, ,Health and Safety
Office Phone Number.............[phone]
Cell Phone Number................[phone]
Fax Number.:.........................[phone]
Mail Code: EC13K
1 of 1 3/11/2009 8:42 AM

REASONABLE POTENTIAL ANALYSIS
Duke Power Belews Station
NCO024406
Time Period
2008
,Qw (MGD)
10.3
7Qi0S (cfs)
80
7Q10W (cfs)
160
30Q2 (cfs)
195
Avg. Stream Flow, QA (cfs)
576
Rec'ving Stream Dan River
WWTP Class
IWC (%) @ 7Q10S
16.636
@ 7Q10W
9.0728
@ 30Q2
7.5676
@ QA
2.6969
Stream Class WS -IV
Outfall 3
Qw=10.3 MGD
'Legend.
C = Carcinogenic
NC = Non -carcinogenic
A =Aesthetic,
Freshwater Discharge
24406-RPA-2009.xls, rpa
3/3/2009
STANDARDS &
PARAMETER
TYPE
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NCWQSf '/:FAV/
n #Det. Max PredCw AllowahleCw
(1)
Chronic Acute
Acute: N/A
Arsenic
C
50
ug/L
29 25
11.5
--- --- — —
_--_
Chronic 1,854
-
Acute: N/A
_ r
Cadmium
C
2:0
ug/L
29 0
1.5
1
— ------------------------
----- - — --
Chronic:
Chronic: 74
Acute: 1,022
Chromium
NC
50 1,022
ug/L
29 3
2.0
%�
----------------------------
_ 301
Chronic
Acute: N/A
Chloride
NC
230,000
ug/L
.29 29
815.1
--- — — — — —
Chronic_ 1,382,521
—
_-
Acute: N/A
Mercury
NC
12
2.0000
ng/L
46.- 45
9.5247
t
_
Chronic 72
Acute:. 261
Nickel
NC
88 261
ug/L
28 19
9.8
--t �'------- — —
Chronic: 529
Acute: 56
J /
Selenium
NC
5.0 56
ug/L
29 28
14.3
---------
------`_-
Chronic: 30
-=------------------
Acute: 1
_ .
Silver
NC
0.06 AL 1.23
ug/L
29 0
1.6
/
/
---- ---------------------
Chronic: 0
rrr-----------
� I ���
Acute: 67
j
Zinc
NC
50 AL 67
ug/L
29 24
66.8
_ _
_ _ ------
__ ------------------
Chronic 301
_'_
'Legend.
C = Carcinogenic
NC = Non -carcinogenic
A =Aesthetic,
Freshwater Discharge
24406-RPA-2009.xls, rpa
3/3/2009

REASONABLE POTENTIAL ANALYSIS
24406-RPA-2009.xls, data
1 3/3/2009
Arsenic
Cadmium
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL
Results
1 :
< 4.00
2.0
Std Dev.
1.6631
1
<
2;
Std Dev.
0.2089
2;
< 4:00,
2.0
Mean
4.6945
2:
<
-2!
1.0
Mean
0.6071
3
<( 4.00!
2.0
C.V_
0.3543
3.
e
21
1.0
C.V.
0.3441
4;
5.651
5.7
n
29
4;
<
2,
1.0
n
29
5;
5.001
5.0
5
<
. ' . '2�
1.0
6
5.23;
5.2
Mult Factor =
1:5500
6t"<
' - 2
1.0
Mult Factor =
1.5300
7
4.10;.
4.1
Max. Value
7.4 ug/L
7.<
2
1.0
Max. Value
1.0 ug/L
8
4:40;
4.4
Max. Fred Cw
11.5 ug/L
8
<
1 `
0.5
Max. Fred Cw
1.5 ug/L
9
5.50!
5.5
9
';<
1
0.5
10
4.90;
4.9
10
? <
1
0.5
11
5.03;
5.0
11
<
1
0.5
12
z 4.00
2.0
12,
<'
1.
0.5
13
¢¢ 3:54,'
3.5
13
i <
1
0.5
14
3 2.90;
2.9
14,
<
1;
0.5
15
3.70
3.7
15<
1
0.5
16
4.25'
4.3
16
<
1.
0.5
17
! 4.30
4.3
17'
<
1.
0.5
18
4.08
4.1
18,
�<
1=
0.5
19
1 440,
4.4
19
I<
1'
0.5
20
4.00
4.0
20-
'.
<
- 1
0.5
21
3 60''
3.6
21
<-
1'
0.5
22
4.53!
4.5
22
<
1
0.5
23
6.53i
6.5
23,
<
1'
0.5
24
7.00,
7.0
24
<
1
0.5
25
6.80'
6.8
25
<
1
0.5
26
7.40,
7.4
26
<
14
0.5
27
7.101
7.1
27,
<
1,
0.5
28
7.10
7.1
28
-
<
1'
0.5
29
7.103
7.1
29
-<,'
1
0.5
30
30
31
31,
32
32' `
33
33-
34
34,
35
}
35:
36'
i.
36
37
!
37,
38
38'
39
39,
40
40,
41
41
42
42:
43,
43:
44
44,
45.,
45'
46;
46;
47
47',
t>
48;
48:
49'
49'
50
50. '
51,
51 "
L
52 i=
52t
53;
-
531
54
54'
55;
55
56�
56;
57;
57;
58
58
59;
60;
59' -
_
199E,,•
601
1991,,
200;
200[
24406-RPA-2009.xls, data
1 3/3/2009

OOrn(n Cn Cn (n (n Cn(n cn m(n A A A A A A AAA A W W W W W W W W W W NNNN NN to N-'���
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U)

REASONABLE POTENTIAL ANALYSIS
24406-RPA-2009.xls, data
-3- 3/3/2009
Mercury
Nickel
Date Data
BDL=1/2DL
Results
Date Data
BDL=1/2DL
Results
1
4.64
4.64
Std Dev.
1.0890
1
<
4
2.0
Std Dev.
1.1478
2
r,; ;
1.50
1.00
Mean
1.9115
2
<
4f
2.0
Mean
2.3914
3
i <{
1.00
1.00
C.V.
0.5697
3 _
<,�
4
2.0
C.V.
0.4800
4
2.10
2.10
n
46
4
<a
4[
2.0
n
28
5
i
2.55
2.55
5
<
4
2.0
6
Mult Factor =
1.71
6
<j
4
2.0
Mult Factor =
1.8100
7
3.56
3.56
Max. Value
5.6 ng/L
7
<
2
1.0
Max. Value
5.4 ug/L
8
4.43
4.43
Max. Fred Cw
9.5 ng/L
8
<
2
1.0
Max. Fred Cw
9.8 ug/L
9
5.57
5.57
9
<
2•
1.0
10
2.24
2.24
10
2.50
2.5
11
2.65
2.65
11
5.40
5.4
12
1.88
1.00
12
4.00
4.0
13
2.22
2.22
13 °
4.88
4.9
14
1.68
1.00
14
4.28
4.3
15
2.30
2.30
15
3.60
3.6
16
,,-
i
1.83
1.00
16
3.10
3.1
17
1.92
1.00
17
w
2.79
2.8
18
1.40
1.00
18
k 3
' 2.40.
2.4
19
1.23
1.00
19
1.96 ,
2.0
20
°
1.15
1.00
20
g
1.70x:
1.7
21
i
2.52
2.52
21
s
1.80
1.8
22
1.82
1.00
22'
3.30
3.3
23
2.49
.2.49
23
>
, 2.23 •
2.2
24
{
1.63
1.00
24
.
1.82
1.8
25
2.47
2.47
25
1.40
1.4
26,I
2.39
2.39
26
�,
1:90
1.9
27
s
2.37
2.37
27
1.70 '
1.7
28
1.69
1.00
281.20
1.2
29
� ?
1.47
1.00
29'
� I
30
I,
1.94
1.00
30
31
; `"
1.61
1.00
31
s
32r
., g
1.60
1.00
32
33
' '
2.56
2.56
33
.
34
1
2.86
2.86
34
352.46
,
2.46
35
36
1.82
1.00
36
37
�, -`
1.45'
1.00
37
38
1.90=
1.00
38
39
1->
2.31
2.31
39.
40
2.07
2.07
40
41
2.24
2.24
41
r
42
2.36•
2.36
42
43
2.32
2.32
43
7
44
2.25
2.25
44
45
1.86
1.00
45'
'
46
1.94°
1.00
46
47
'. -
1,65
1.00
47
s
48
48,
49
� °"
49' °
,
50
50
51
G-
51
52
52[
53:
53, ;
WA
I
54
t
�°x
54;
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55.
55�
56
56,
G
57�',
'
57,
58
r`$
58n
F
59'
;`s
59
,
60
60
199€
„ '
199"
„
200•
200 Tl'
24406-RPA-2009.xls, data
-3- 3/3/2009

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REASONABLE POTENTIAL ANALYSIS
-5-
24406-RPA-2009.xls, data
3/3/2009

Re: Belews Creek question
Subject: Re: Belews Creek question
From: [e-mail]
Date: Tue, 3 Mar 2009 09:41:43 -0500
To: Sergei Chernikov <[e-mail]>
I agree with your decision to disregard the outlier value. Thanks for
clarifying this issue.
Karrie-Jo Robinson -Shell, P.E.
Sergei Chernikov
<Sergei.Cherniko
v@ncmail:net>
03/03/2009 09:03
AM
To
Karrie-Jo Shell/R4/USEPA/US@EPA
cc
Subject
Karrie-Jo,
Belews Creek question
Below is the explanation from Duke regarding an outlier, that I
mentioned in previous e-mail.
Sergei
*Duke Energy feels confident that the one outlier is from sample
contamination for the following reasons:
1. Early on we had several issues with the company doing the low level
mercury sampling. Specifically it was noted that for the week of March
19, 2008 in the low level mercury sampling that:
a. Water and grass found in "inner clean mercury sampling bag".
b. Elevated low level mercury blanks (> 0.5 ng/L) required
raising of reporting limits to 1 ng/L. Prior to this sequence of events
- mercury blanks
had been running < 0.5 ng/L. Some samples did not meet the 5X
rule (sample conc. must be 5X blank conc. to be considered valid).
2. The ash basin at Belews Creek is very large and has a lengthy
retention time (at least several weeks). The results the week before
and after the outlier were 2.5 ppt on March 10, 2008 and 3.6 ppt on
March 24, 2008. If the sample on March 17, 2008 was not due to
contamination and was due to the concentration in the ash basin then you
would expect the results on March 10, 2008 and March 24, 2008 to be
higher to reflect a gradual increase to the 36.4 ppt level. That was
not the case and all the values besides this one have been below 6 ppt
with most of them being below 2 ppt.*
Sergei Chernikov, Ph.D.
Environmental Engineer II
1 of 2 3%3/2009 10:58 AM

Re: Belews Creek question
NPDES-West
Phone: [phone], fax [phone]
1617 Mail Service Center
Raleigh, NC 27699-1617
Express mail: 512 North Salisbury St.
Raleigh, NC 27606
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties.
2 of 2 3/3/2009 10:58 AM

rD V,-)
V_ kA/ �
Comments on Duke Energy Belew's Creek Steam Station Permit Renewal
02-27-2009
1. Shouldn't WWTP be added to cover sheet supplement?
2. Shouldn't we classify the plant and list in BUMS, if for no other reason, to require
an ORC?
3. Wouldn't an effluent temp limit on 001 be more effective at limiting temp
increases in Belew's Creek, than a DS temp limit?
4. In footnote #2 of table A(1) for 001, shouldn't we require them to measure temp
manually on a daily basis if their temp monitoring system goes down?
5. There is some variation in the description of the waste streams that are tributary to
002 on the supplemental pages of the old and new permits; i.e. domestic waste.
Shouldn't we get an update/verification/clarification of the _tributary waste streams
from the permittee?
6. If we're listing internal outfalls, i.e. 002, why don't we list them all?
7. Why do internal outfalls have limits?
8. Table A(2) for 002 - footnote, "No flow" is not good. They need to monitor,
record and report daily flows and enter 0.0 if there is no flow. (Hidden Valley
example.)
9. Table A(3) for 003
• Monitoring frequency for SE actually increased from quarterly to
monthly. It did not decrease from something to monthly as stated
in "Summary of Proposed Changes".
• Monitoring frequency for Hg did not change as indicated in the
"Summary of Proposed Changes". It does now have a limit though.
• Why is monitoring only required "when" 002 is discharging?
• pH should be monitored upstream of the confluence, not at the
confluence.

January 27, 2009
RECEIVED
MEMORANDUM
N.C. Deft. of EAIR �
MEMORANDUM FEB 13 2C89
wh3st©n•sa18M !
To: Lee Spencer, Regional Engineer Regional Off,ce
NC DENR / DEH / Public Water Supply Section
Winston Salem Regional Office TA 0
RECEIVLD.
From: Sergei Chernikov, Environmental Engineer II, NPDES-West,
Division of Water Quality (fax-919-807-6495) FEB 2 4 2009
Subject: Review of the discharge locations for the following:
DENR . WATER QUALITY
Belews Creek Steam Station
NCO024406 POINT SOURCE BRANCH
Stokes County
Please indicate below by March 2, 2009 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:
Date: 2 / 9 o f
cc: file

draft permit for Belews Creek Steam
Subject: draft permit for Belews Creek Steam
From: [e-mail]
Date: Wed, 18 Feb 2009 07:53:52 -0500
To: [e-mail]
CC: I- Iyatt.Marshall@epamail. epa. gov
Hi Sergei,
I reviewed the modified permit for Belews Creek, but I did not see any
language pertaining to 316b in the amended fact sheet or the permit.
Please include language addressing your BPJ determination regarding the
cooling water intake structure.
Thanks,
Karrie-Jo Robinson -Shell, P.E.
1 of 1 2/18/2009 12:20 PM

Winston-Salem Journal
Advertising Affidavit
Winston-Salem Journal
P.O Box 3159
Winston-Salem, NC 27102
NCDENR/DWQ/POINT SOURCE BRANCH
ATTN: DINA SPRINKLE
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
Account Number
3376309
Date
February 13, 2009
Date Category Description Ad Size Total Cost
02/13/2009 Legal Notices PUBLIC NOTICE STATE OF NORTH CAROLINA EN 2 x 59 L 405.91
1 1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
NOTIFICATION OF INTENT TO ISSUE •
A NPDES WASTEWATER PERMIT
9 on the .basis. of thorough staff review and applica-
tion of NC General Statute 143.215.1 and 15A NCAC
102H.0109 and other lawful. standards and regula-
ltions, the North Carolina' Environmental Manage-
ment Commission proposes to issue a National
Pollutant Discharge Elimination System ,(NPDES)
wastewater discharge permit to the person(s) list-
ed below effective 45 days from the publish date of
this notice;
Written comments regarding the proposedpermit
will be accepted until 30 days after the publish date
of this notice. All comments received priorto 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 c
information on file used to deter
present in the draft permit' are
request and payment of the costs
I address or call Dina Sprinkle [phone] at the
(Point Source Branch. Please include the'NPDES
permit number (below) in' any communication.
Interested persons may also visit the Division of
Water Quality at 512 N. Salisbury Street, Raleigh
NC 27604-1148 between the hours of 8:00 a.m. and
5:00 p.m: to review information on file.
-
IDuke Power LLC has applied for the modification of
rthe NPDES' discharge permit (NC0024406) for its
Belews Creek Steam,Station in Stokes County. This
1 permitted facility discharges once.through cooling
,water and treated wastewater to the Belews Lake
and Dan River within the'Roanoke River Basin. The
permit is being modified .to reduce. monitoring
(frequencies for Cl, Se, Cd, Cr, Ni, Ag, and Zn. The
following parameters are currently water quality
limited: TSS, mercury, and oil and Grease. This dis-
charge may affect future allocations in this portion
of the Dan River.
,f
WSJ: February i3. 2009 ,
Media General Operations, Inc.
Publisher of the
Winston-Salem Journal
Forsyth County
Before the undersigned, a Notary Public of Forsyth County, North Carolina, duly
commissioned, qualified, and authorized by law to administer oaths, personally appeared
D.H. Stanfield, who by being duly sworn deposes and says: that he is Controller of the
Winston-Salem Journal, engaged in the publishing of a newspaper known as Winston-Salem
Journal, published, issued and entered as second class mail in the City of Winston-Salem, in
said County and State: that he is authorized to make this affidavit and sworn statement: that
the notice or other legal advertisement, a true copy of which is attached hereto, was
published in the Winston-Salem Journal on the following dates:
02/13/2009
and that the said newspaper in which such notice, paper document, or legal advertisement
was published was, at the time of each and every such publication, a newspaper meeting all
the requirements and qualifications of Section 1-597 of the General Statutes of North
Carolina and was a qualified newspaper within the meaning of Section 1-597 of the Gencrai
Statutes of North Carolina.
This 13th day of February, 2009
(signature ofp rsonma •rfg of avrtdavitd
Sworn to and subscribed before me, this 13th day of February, 2909
(Not ublic)
My Commission expires Zi ai o
THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU

BELEWS CREEK
Subject: BELEWS CREEK
From: "Wylie, Robert R" <[e-mail]>
Date: Fri, 13 Feb 2009 09:57:17 -0500
To: Sergei Chemikov <[e-mail]>
Sergei,
Below is an updated list of the Hg results leaving the NPDES outfall 003. Please re -run the RPA and let me know
when you have a chance if the more recent data changes anything.
Thanks,
Robert Wylie
Water Management.
Environmental, Health and Safety
Office Phone Number.............[phone]
Cell Phone Number................[phone]
Fax Number ..........................[phone]
Mail Code: EC13K
2/11/08
4.64
2/18/08
1.5
2/25/08
< 1.0
3/3/08
2:1
3/10/08
2.55
3/17/08
36.4
3/24/08
3.56
3/31/08
4.43.
4/7/08
5.57
4/14/08
2.24
4/21/08
2.65
4/28/08
1.88
5/5/08
2.22
5/12/08
1.68
5/19/08
2.30
5/26/08
1.83
6/2/08
1.92
6/9/08
1.40
6/16/08
1.23
6/23/2008
1.15
6/30/2008
2.52
7/7/2008
1.82
7/14/2008
2.49
7/21/2008
1.63
7/28/2008
2.47
8/4/2008
2.39
of 2 2/13/2009 10:27 AM

BELEWS CREEK
8/11/2008
2.37
8/18/2008
1.69
8/25/2008
1.47
9/2/2008
1.94
9/8/2008
1.61
9/15/2008
1.60
9/22/2008
2.56
9/29/2008
2.86
10/6/2008
2.46
10/13/2008
1.82
10/20/2008
1.45
10/27/2008
1.90
11./3/2008
2.31
11 /10/2008
2.07
11 /17/2008
2.24
11/24/2008
2.36
12/1/2008
2.32
12/8/2008
2.25
12/15/2008
1.86
12/22/2008
1.94
12/29/2008
1.65
of 2 2/13/2009 10:27 AM

�Duke
Energy�
October 21, 2008
To: Sergei Chernikov
North Carolina Department of Environment
and Natural Resources
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: Belews Creek Steam Station
NPDES Permit No. 0024406
NPDES Permit Modification Request
Dear Mr. Chernikov:
Duke Energy
Belews Creek Steam Station
3195 Pine Hall Road -
Belews Creek, NC 27009
[phone] OFFICE
[phone] FAX
Section A (4) Special Conditions of the subject NPDES permit states that after six months of
monitoring if a facility determines that it is consistently meeting the effluent limits then the
Permittee may request a reduction in the monitoring frequency. Belews Creek Steam Station began
to discharge wastewater from the operation of the Flue Gas Desulfurization (FGD) System in early
February 2008. At that time the monitoring frequency for several parameters was increased to
weekly at both the final NPDES outfall 003 (ash basin discharge) and the new internal outfall 002
(FGD wastewater treatment system discharge). Attached is a compilation of the data collected
during the first six months of operation at these two outfalls. Upon review of the attachments,
Belews Creek Steam Station request that the monitoring frequency of the following parameters be
reduced as follows:
P4
TSS and
NPDES Outfall 002 (Internal Outfall) ,
• Reduce to Monthly: Chloride and Selenium
• Eliminate Monitor'ng or: Arsenic, Cadmium, Chromium, Mercury, Nickel, Silver,
Zinc , Q,, -,/
NPDES Outfall 003 (Final Outfall)
r✓
• Reduce to Monthly: Chloride and Selenium
J f • Eliminate Monitoring or: Ais-c ri Cadmium, Chromium, Mercury, Nickel, Silver and Zinc — p -,•/
Belews Creek plansY'o begin to sample further upstream of the current sampling point for the
internal outfall 002 beginning on November 1, 2008. The new sampling location will be after the
wastewater is treated by the selenium reduction biological treatment system (SRB) at the discharge
from a tank called the "wetland supply tank". The treated FGD wastewater currently discharges

Duke
Energy.
Duke Energy
Belews Creek Steam Station
3195 Pine Hall Road
Belews Creek, NC 27009
[phone] OFFICE
[phone] FAX
into a constructed wetland treatment system (CWTS) after the SRB. In -processing data indicates
that sufficient treatment is occurring by the up front physical / chemical and SRB treatment systems.
Therefore an authorization to construct (ATC) application has been submitted to NCDENR
Construction Grants and Loan Unit to install valves and piping so the discharge from the SRB can
be realigned to discharge directly to the ash basin and the storm water run-off from various points at
the site and also the sanitary lagoon system treated discharge water can be sent to the CWTS. The
treated FGD wastewater may periodically be realigned to discharge to the CWTS if a reason such as
lack of water in the CWTS warrants this alignment. However, it is planned that the normal
alignment from the FGD SRB will be directly to the ash basin.
Enclosed is a check for $1030.00 to pay for the fee associated with this major permit modification
request. Your efforts to complete this permit modification in a timely manner are much appreciated.
If you have questions or need additional information on these proposed changes, please contact
Robert Wylie at [phone].
Sincerely,
C)ca",J"� vc'�'Ux �c
Donald Faulkner, Vice President
Belews Creek Steam Station

Belews Creek Steam Station
NPDES Permit No. 0024406
Final Outfall 003
Date
Arsenic
(Ng/L)
Cadmium
(Ng/L)
Chloride
(Ng/L)
Chromium
(Ng/L)
Mercury
(Ng/L)
Nickel
(Ng/L)
Selenium
(Ng/L)
Silver
(pg/L)
Zinc
(Ng/L)
2/11/08
< 4.00
< 1.00
8.10
< 2.00
4.64
< 4.00
< 4.00
< 1.00
6.10
2/18/08
< 4.00
< 1.00
10
< 2.00
1.5
< 4.00
6.21
< 1.00
4.80
2/19/08
2/25/08
< 4.00
< 1.00
24
< 2.00
< 1.0
< 4.00
7.76
< 1.00
4.39
3/3/08
5.65
< 1.00
46
< 2.00
2.1
< 4.00
8.37
< 1.00
4.20
3/10/08
5.00
< 1.00
60
< 2.00
2.55
< 4.00
7.83
< 1.00
5.02
3/17/08
5.23
< 1.00
73
< 2.00
36.4
< 4.00
8.56
< 1.00
4.77
3/24/08
4.10
< 2.00
90
< 2.00
3.56
< 2.00
6.40
< 2.00
4.40
3/31/08
4.40
< 2.00
99
< 2.00
4.43
2.50
6.90
< 2.00
5.90
4/7/08
5.50
< 2.00
100
< 2.00
5.57
5.4
10.7
< 2.00
23.2
4/14/08
4.90
< 2.00
120
< 2.00
2.24
4.00
9.50
< 2.00
12.0
4/21/08
5.03
< 1.00
130
< 2.00
2.65
< 4.00
7.42
< 1.00
9.71
4/28/08
< 4.00
< 1.00
120
< 2.00
1.88
4.88
4.85
< 1.00
15.40
5/5/08
3.54
< 2.00
160
< 2.00
2.22
4.28
7.35
< 2.00
10.10
5/12/08
2.90
< 1.00
230
< 1.00
1.68
3.6
6.50
< 1.00
7.20
5/19/08
3.70
< 1.00
210.00
< 1.00
2.30
3.1
6.60
< 1.00
4.60
5/26/08
4.25
< 1.00
220.00
< 1.00
1.83
2.79
6.26
< 1.00
2.33
6/2/08
4.30
< 1.00
230
< 1.00
1.92
2.40
6.05
< 1.00
2.18
6/9/08
4.08
< 1.00
220
< 1.00
1.40
1.96
6.25
< 1.00
3.51
6/16/08
4.40
< 1.00
300
< 1.00
1.23
1.70
6.56
< 1.00
2.75
6/23/08
4.00
< 1.00
330.00
< 1.00
1.15
1.80
4.90
< 1.00
< 1.00
6/30/08
3.60
< 1.00
340.00
1.00
2.52
3.30
5.60
< 1.00
6.00
7/7/08
4.53
< 1.00
350
< 1.00
1.82
2.23
6.23
< 1.00
1.78
7/14/08
6.53
< 1.00
350
< 1.00
2.49
1.82
8.03
< 1.00
< 1.00
7/21/08
7.00
< 2.00
340
< 2.00
1.63
< 2.00
8.10
< 2.00
< 2.00
7/28/08
6.80
< 2.00
350
< 2.00
2.47
< 2.00
7.40
< 2.00
< 2.00
8/4/08
7.40
< 1.00
360
< 1.00
2.39
1.40
7.70
< 1.00
1.20
8/11/08
7.10
< 1.00
380
1.30
2.37
1.90
6.50
< 1.00
1.30
8/18/08
7.10
< 1.00
370
1.30
1.69
1.70
6.30
< 1.00
1.00
8/25/08
7.10
< 1.00
390
< 1.00
1.47
1.20
6.00
< 1.00
< 1.00
Average
5.13
<1
207.24
1.20
3.58
2.73
7.03
<1
5.99

Belews Creek Steam Station
NPDES Permit No. 0024406
Internal Outfall 002
Date
Arsenic
(Ng/L)
Cadmium
(Ng/L)
Chloride
(Ng/L)
Chromium
(Ng/D)
Mercury
(F�9/D)
Nickel
(Ng/L)
Selenium
(Ng/L)
Silver
(Ng/L)
TSS
(mg/L)
Zinc.
02/11/08
< 4.00
< 1.00
460
< 2.00
< 0.2
42.40
8.10
< 1.00
4.0
4.34,,
02/18/08
17.3
< 1.00
4200
< 2.00
< 0.2
44.50
6.40
< 1.00
5.0
8.94: _`.
02/25/08
20.0
< 1.00
4600
< 2.00
< 0.2
9.44
3.70
< 1.00
8.0
16.9 .
03/03/08
18.6
< 1.00
4200
< 2.00
< 0.2
< 4.00
3.50
< 1.00
8.0
6.48
03/10/08
16.6
< 1.00
3800
< 2.00
< 0.2
< 4.00
2.90
1.33
6.0
6.46
03/17/08
16.3
< 1.00
4500
< 2.00
< 0.2
< 4.00
3.40
1.47
10.0
6.49
03/24/08
< 2.00
< 2.00
3600
< 2.00
< 1.00
< 2.00
4.10
< 2.00
4.0
< 4.00
03/31/08
< 2.00
< 2.00
3500
< 2.00
< 1.00
< 2.00
4.20
< 2.00
4.0
< 4.00
04/07/08
12.00
< 2.00
2300
2.30
< 1.00
< 2.00
3.40
< 2.00
< 4
4.80
04/14/08
14.90
< 2.00
2700
3.00
< 1.00
< 2.00
3.40
< 2.00
< 4
6.00
04/21/08
24.60
< 1.00
3100
< 2.00
< 1.00
< 4.00
4.05
< 1.00
< 4
6.79
04/28/08
19.10
< 1.00
2600
< 2.00
< 1.00
< 4.00
4.53
< 1.00
9.0
6.40
05/05/08
20.10
< 2.00
3100
< 2.00
< 1.00
18.10
4.70
< 2.00
< 2.00
05/06/08
8.0
05/12/08
9.10
< 1.00
2100
< 1.00
< 1.00
6.60
1.10
< 1.00
10.0
1.40
05/19/08
10.30
< 1.00
2300
< 1.00
< 1.00
2.60
< 1.00
< 1.00
6.0
1.20
05/26/08
21.00
< 1.00
2700
1.07
< 1.00
2.32
1.46
< 1.00
15.0
2.05
06/02/08
19.30
< 1.00
2800
1.05
< 1.00
2.25
1.09
< 1.00
7
1.98
06/09/08
4.22
< 1.00
3300
< 1.00
< 1.00
2.69
2.43
< 1.00
6
1.59
06/16/08
2.91
< 1.00
2700
< 1.00
< 1.00
1.50
2.32
< 1.00
1 7
1.41
06/23/08
1.70
< 1.00
2700
< 1.00
< 1.00
1.10
1.40
< 1.00
16
< 1.00
06/30/08
1.30
< 1.00
1500
< 1.00
< 1.00
< 1.00
1.10
< 1.00
4
< 1.00
07/07/08
< 2.00
< 2.00
2800
< 2.00
< 1.00
< 2.00
< 2.00
< 2.00
4
< 2.00
07/14/08
< 2.00
< 2.00
2800
< 2.00
< 1.00
< 2.00
< 2.00
< 2.00
4
< 2.00
07/21/08
2.60
< 2.00
3500
< 2.00
< 1.00
< 2.00
2.60
< 2.00
4
< 2.00
07/28/08
2.20
< 2.00
3500
< 2.00
< 1.00
< 2.00
2.60
< 2.00
6
< 2.00
08/04/08
2.50
< 2.00
3600
< 2.00
< 1.00
< 2.00
2.30
< 2.00
6.00
< 2.00
08/11/08
2.50
< 2.00
3900
< 2.00
< 1.00
2.00
3.20
< 2.00
6.00
< 2.00
08/18/08
2.40
< 2.00
4500
< 2.00
< 1.00
2.30
4.30
< 2.00
5.00
< 2.00
08/25/08
2.30
< 2.00
5300
< 2.00
< 1.00
< 2.00
4.30
< 2.00
5.0
< 2.00
Average
10.99
<2
3195.17
1.86
<1
10.60
3.33
1.40
6.81
5.20
\L

A. (6) GROUNDWATER MONITORING WELL CONSTRUCTION AND SAMPLING
1. The permittee shall conduct.groundwater monitoring as may be required to determine
the compliance of this NPDES permitted facility with the current groundwater Standards
found under 15A NCAC 2L.0200
2. WELL CONSTRUCTION. Within 120 days of permit issuance, monitoring wells, as
proposed on Attachment XX, shall be installed to monitor groundwater quality.
a. Monitoring wells shall be constructed in accordance with 15A NCAC 02C .0108
(Standards of Construction for Wells Other than Water Supply) and any other
jurisdictional laws and regulations pertaining to well construction. The general
locations for all monitoring wells are indicated on Attachment XX.
b. Within 30 days of completion of well construction, a completed Well
Construction Record (Form GW -1) must be submitted for each monitoring well
to Division of Water Quality, Aquifer Protection Section, 1636 Mail Service
Center, Raleigh, NC 27699-1636.
C. The Winston-Salem Regional Office, telephone number [phone], shall
approve the location of new monitoring wells prior to installation. The regional
office shall be notified at least 48 hours prior to the construction- of any
monitoring well and such notification to the Aquifer Protection Section's
regional supervisor shall be made from 8:00 a.m. until 5:00 p.m. on Monday
through Friday, excluding State Holidays.
d. Within 60 days of completion of the monitoring wells, the Permittee shall
submit two original copies of a site map with a scale no greater than 1 -inch
equals 500 feet. At a minimum, the map shall include the following
information:
i. The location and identity of each monitoring well.
ii. The location of major components of the waste disposal system.
iii. The location of property boundaries within 500 feet of the disposal
areas.
iv. The latitude and longitude of the established horizontal control
monument.
V. The elevation of the top of the well casing (i.e., measuring point)
relative to a common datum.
vi. The depth of water below the measuring point at the time the
measuring point is established.
vii. The location of compliance and review boundaries.
viii. The date the map is prepared and/or revised.
ix. Topographic contours in no more than ten (10) foot intervals
e. The above information should be overlaid on the most recent aerial photograph
taken of the site. Control monuments shall be installed in such a manner and
made of such materials that the monument will not be destroyed due to
activities taking place on the property. The map and any supporting
documentation shall be sent to the Division of Water Quality, Aquifer Protection
Section, 1636 Mail Service Center, Raleigh, NC 27699-1636.
f. The well(s) must be constructed by a North Carolina Certified Well Contractor,
the property owner, or the property lessee according to General Statutes 87-
98.4. If the construction is not performed by a certified well contractor, the
property owner or lessee, provided they are a natural person, must physically
perform the actual well construction activities.
NC0024406 — Belews Creek Steam Station
Groundwater Monitoring Plan Page 1 of 4 6/15/11

rI �
g. The monitoring wells shall be regularly maintained. Such maintenance shall
include ensuring that the well caps are rust -free and locked at all times, the
outer casing is upright and undamaged, and the well does not serve as a conduit
for contamination.
3. GROUNDWATER SAMPLING AND COMPLIANCE. Monitoring wells shall be sampled after
construction and thereafter at the frequencies and for the parameters as specified in
Attachment XX. All maps, well construction forms, well abandonment forms and
monitoring data shall refer to the permit number and the well nomenclature as
provided on Attachment XX.
a. Per 15A NCAC 02H .0800, a Division certified laboratory shall conduct all
laboratory analyses for the required effluent, groundwater or surface water
parameters.
b. The measurement of water levels shall be made prior to purging the wells. The
depth to water in each well shall be measured from the surveyed point on the
top of the casing. The measurement of pH shall be made after purging and prior
to sampling for the remaining parameters.
C. The measuring points (top of well casing) of all monitoring wells shall be
surveyed to provide the relative elevation of the measuring point for each
monitoring well. The measuring points (top of casing) of all monitoring wells
shall be surveyed relative to a common datum.
d. For monitoring wells that are not located at the Compliance Boundary, the
Compliance Monitoring Form (GW-59CCR) is not required. However, predictive
calculations or modeling shall be submitted to the Regional Office annually (i.e.
12 months after permit issuance) demonstrating groundwater quality standards
at the Compliance Boundary.
e. Two copies of the monitoring well sampling shall be submitted on a Compliance
Monitoring Form (GW-59CCR); and received no later than the last working day
of the month following the sampling month. Copies of the laboratory analyses
shall be kept on site, and made available upon request. The Compliance
Monitoring Form (GW-59CCR) shall include this permit number and the
appropriate well identification number. All information shall be submitted to
the following address:
Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
f. For groundwater samples that exceed the ground water quality standards in
15A NCAC 02L.0202, the Regional Office shall be contacted within 30 days after
submission of the groundwater monitoring report; an evaluation may be
required to determine the impact of the waste disposal activities. Failure to do
so may subject the permittee to a Notice of Violation, fines, and/or penalties.
NCO024406 — Belews Creek Steam Station
Groundwater Monitoring Plan Page 2 of 4 6/15/11

4. COMPLIANCE BOUNDARY. The compliance boundary for the disposal system shall be
specified in accordance with 15A NCAC 02L .0107(a). This disposal system was
individually permitted prior to December 30, 1983; therefore, the compliance boundary
is established at either 500 feet from the effluent disposal area, or at the property
boundary, whichever is closest to the effluent disposal area. An exceedance of
groundwater standards at or beyond the compliance boundary is subject to remediation
action according to 15A NCAC 02L .0106(c) as well as enforcement actions in accordance
with North Carolina General Statute 143-215.6A through 143-215.6C.
NCO024406 — Belews Creek Steam Station
Groundwater Monitoring Plan Page 3 of 4 6/15/11

ATTACHMENT XX — GROUNDWATER MONITORING PLAN
Permit Number: NCO024406
Version 1.1
WELL
NOMENCLATURE
PARAMETER DESCRIPTION
FREQUENCY
Monitoring Wells:
MW -2005, MW -200D,
MW -2011), MW -2025,
MW -202D, MW -203 S,
MW -203D, MW -204S,
MW -2041)
Antimony
Chromium
Nickel Thallium
January, May,
September
Arsenic Copper Nitrate Water Level
Barium Iron PH Zinc
Boron Lead Selenium
Cadmium Manganese Sulfate
Chloride Mercury TDS
Note 1: For locations of monitoring wells, see attached map.
Note 2: Monitoring revisions may be considered, as applicable, if there are no significant detections prior to permit
renewal.
NCO024406 — Belews Creek Steam Station
Groundwater Monitoring Plan Page 4 of 4
6/15/11

Chernikov, Sergei
From: Wylie, Robert R [[e-mail]]
Sent: Monday, March 16, 2009 9:32 AM
To: '[e-mail]'
Subject: Re: question about Belews
Sergei, Belews Lake was built as a cooling pond for Belews Creek Steam Station. Dam
construction began in May 1969 which impounded Belews Creek and two tributaries. The lake
began to fill in 1970. It reached full pond in 1973. Unit 1 began operation in July 1974.
Thanks, Robert
----- - --------------------
Sent using BlackBerry
----- Original Message -----
From: Sergei Chernikov <SerRei.Chernikov(@ncmail.net>
To: Wylie, Robert R
Sent: Fri Mar 13 12:50:01 2009
Subject: question about Belews
Robert,
We have been getting a few requests for a public hearing for Belews modification. According
to my records Belews Lake is classified as a cooling pond. Do you know when this decision
was made? I did not find it in our files because files that are older than 5 years are
archived.
Thank you!
Sergei
Sergei Chernikov, Ph.D.
Environmental Engineer II
NPDES-West
Phone: [phone], fax [phone]
1617 Mail Service Center
Raleigh, NC 27699-1617
Express mail: 512 North Salisbury St.
Raleigh, NC 27606
E-mail correspondence to and from this address may be subject to the North Carolina Public
Records Law and may be disclosed to third parties.
1

SOF W ATFR p
' r
o �
Mr. Ronald E. Lewis
Duke Energy Corporation
P.O. Box 1006
Charlotte, NC 28201-1006
Dear Mr. Lewis:
WE
Beverly Eaves Perdue, Governor
Dee Freeman, Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality,
January 13, 2009
Staff of the Biological Assessment Unit (BAU) have reviewed the 2007 Dan River Summary Report
required by the NPDES permit for the Belews Creek Steam Station`(NPDES Permit No. NC0024406) in
Stokes County.
The report summary notes that selenium in fish muscle tissue remained well below the 10
microgram/gram concentration considered by the North Carolina Department of Health and Human
Services as the maximum safe concentration for human consumption, 'even though the levels are still
below a concentration of 5 microgram/gram, which was the prior consumption advisory limit.
The benthos data also continue to indicate no impact from the discharge to the Dan River. The 2007
drought resulted in the highest total taxa and highest EPT values compared to the previous ten years.
The benthos sampling has been conducted annually since 1985.
Sincerely,
immie Overton
Chief, Environmental Sciences Section
cc: Tom Beinick, Surface Water Protection Section
Steve Tedder, WSRO w/ report
Environmental Sciences Section
Mailing Address Phone [phone] Location 1'�rthCarolinna
/
1621 Mail Service Center Fax [phone] Reedy Creek Rd �lAwall
Raleigh, NC 27699-1621 Raleigh, NC 27607
Internet: http://h2o.enr.state.ne.us/esbPindex.htnd Customer Service 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10%Post Consumer Paper

January 10, 2008
Mr. Ronald E. Lewis
Duke Energy Corporation
P.O. Box 1006
Charlotte, NC 28201-1006
Dear M n�S: h
Eric Fleek and Jeff Deberardinis of the Biological Assessment Unit (BAU) have reviewed the 2006 Dan River Summary
Report. required by the NPDES permit for the Belews Creek Steam Station (NPDES Permit No. NC0024406) in Stokes
County.
The report summary notes that selenium in fish muscle tissue remained well below the 5 microgram/gram concentration
considered as the level at which to issue a consumption advisory. The benthos data also continue to indicate no impact
from the discharge to the Dan River. The benthos sampling has been conducted annually since 1985.
Your letter of December 27, 2007 requested that Duke Energy discontinue copper analysis of macroinverebrate samples
since less than 10 percent of those samples were above varying copper detection limits. Your request to discontinue the
copper analysis in macroinvertebrates is approved.
Sincerely,
mie Overton
Chief, Environmental Sciences Section
cc: Susan Wilson, Western NPDES Program
Steve Tedder, WSRO w/ rpt
Environmental Sciences Section 1621 Mail Service Center Raleigh, NC 27699-1621
Internet: www.esb.enr:state.nc.us 4401 Reedy Creek Road Raleigh, NC 27607
An Equal Opportunity/Affirmative Action Employer— 50%'Recycled110% Post Consumer Paper
One
e
NCarolina
Ada'al!y
Phone [phone] Customer Service
FAX[phone]
Michael F. Easley, Governor
�01
William G. Ross Jr., Secretary
rNorth
Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
January 10, 2008
Mr. Ronald E. Lewis
Duke Energy Corporation
P.O. Box 1006
Charlotte, NC 28201-1006
Dear M n�S: h
Eric Fleek and Jeff Deberardinis of the Biological Assessment Unit (BAU) have reviewed the 2006 Dan River Summary
Report. required by the NPDES permit for the Belews Creek Steam Station (NPDES Permit No. NC0024406) in Stokes
County.
The report summary notes that selenium in fish muscle tissue remained well below the 5 microgram/gram concentration
considered as the level at which to issue a consumption advisory. The benthos data also continue to indicate no impact
from the discharge to the Dan River. The benthos sampling has been conducted annually since 1985.
Your letter of December 27, 2007 requested that Duke Energy discontinue copper analysis of macroinverebrate samples
since less than 10 percent of those samples were above varying copper detection limits. Your request to discontinue the
copper analysis in macroinvertebrates is approved.
Sincerely,
mie Overton
Chief, Environmental Sciences Section
cc: Susan Wilson, Western NPDES Program
Steve Tedder, WSRO w/ rpt
Environmental Sciences Section 1621 Mail Service Center Raleigh, NC 27699-1621
Internet: www.esb.enr:state.nc.us 4401 Reedy Creek Road Raleigh, NC 27607
An Equal Opportunity/Affirmative Action Employer— 50%'Recycled110% Post Consumer Paper
One
e
NCarolina
Ada'al!y
Phone [phone] Customer Service
FAX[phone]

S
Ph Duke
f ®Energy,
I,
December 27, 2007
Mr. Jimmie Overton
Environmental Sciences Branch
North Carolina Department of Environment
and Natural Resources
1621 Mail Service Center
Raleigh, NC 27699-1621
CORPORATE EHS SERVICES
Duke Energy Corporation
526 South Church St.
Charlotte, NC 28202
Mailing Address:
EC13K / PO Box 1006
Charlotte; NC 28201-1006
J,
J A N 2 2008
Subject: Belews Creek Steam Station NPDES Permit No. NCO024406
2006 Dan River Summary Report
Dear Mr. Overton:
Enclosed are three copies of the 2006 Dan River summary report, as required by Part I.AA. of NPDES
permit No. NCO024406 for Belews Creek Steam Station in Stokes County, North Carolina. The selenium
concentration in fish muscle tissue remained well below the 5 pg/g concentration considered by
NCDENR as the maximum safe concentration for human consumption. This annual update continues to
indicate no detrimental impact to the aquatic biota in the Dan River from the discharge of Belews Creek
Steam Station ash basin that was initiated in November, 1985.
Since less than 10 percent of macorinvertebrate samples analyzed for copper since 1998 were above
varying detection limits, approval to discontinue copper analysis of macroinvertebrate samples is
requested. Following review of the report, please forward your reply to this request.
If you have any questions concerning this report, please contact me at (980)-373-5710.
Sincerely,
Ronald E. Lewis
Senior Scientist
Water Management
Attachments
xc w/o att: Ms. Susan Wilson, NCDENR-DWQ, 1617 Mail Service Center, Raleigh, NC 27699-1617
www. duke -energy. com