NC0003425_Permit Modification_20050810

Mr. Cecil Rowland
Plant Manager
Roxboro Steam Electric Generating 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
August 10, 2005
Subject: Modification of NPDES Permit NC0003425
Roxboro Steam Electric Plant
Person County
The Division has reviewed your request to modifypermit NC0003425 based upon the addition of a wastestream
from a proposed Flue Gas Desulfurization (FGD) System This final permit includes the following changes
from the revised draft permit sent to you on June 22, 2005:
➢ Outfall 010: Monitoring for total manganese has been removed.
➢ Outfall 010: Monitoring frequency for total selenium has been changed to quarterly.
➢ Outfall 010: Quarterly monitoring has been added for antimony, silver, and vanadium
➢ Special Condition A.(18) has been added requiring an emergency response plan and operation and maintenance plan for
the bioreactors.
In accordance with your permit modification request and our review, the Division is forwarding herewith a
modification to the subject permit. Enclosed please find the modified permit pages. These pages should be inserted
into your permit and the old ones discarded. 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 May 9, 1994 (or as subsequently amended).
If anyparts, 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 a written petition conforming to Chapter 150B of the North
Carolina General Statutes, 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. If you have any
questions concerning this permit modification, please contact Dawn Jeffries of the NPDES Unit at [phone],
extension 595.
Sincerely,
ORIGINAL SIGNED BY
Tom BeInick
Alan W. Klimek, P.E.
cc: Central Files
Raleigh Regional Office, Water Quality Section
NPDES Unit
EPA Region IV
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer VISIT us ON THE INTERNET @ http•//h2o.enr statem us/NPDES

Permit NC0003425,
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 provisions 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,
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 September 1, 2005.
This permit and the authorization to discharge shall expire at midnight on March 31, 2007.
Signed this day August 10, 2005.
ORIGINAL SIGNED BY
Tom Behick
AlariW. Klimek, P.E.
Director,
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0003425
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.
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
water, 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 into 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 flow from several waste streams
including; once -through cooling water, 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. 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
wastestream is generated from blowdown from the FGD unit. After treatment in
bioreacters, effluent will be discharged into the heated water discharge canal
downstream from outfall 002 and before the sampling point for outfall 002.
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 010.
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.

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Permit NC0003425
PART I WASTEWATER MONITORING, CONTROLS AND LIMITATIONS (effective February 1, 2003) Page 1 of 11
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 -
EFFLUENT CHARACTERISTICS
LIMITS MONITORING REQUIREMENTS
ple Sample Location'
Monthly Daily MeasurementEte
Avera a Maximum Frequency
Flow
Daily
Continuous
Effluent
Total Selenium
2/month
Grab
Effluent
Oil and Grease
15 0 m /L
20.0 m /L
2/Month
Grab
Effluent
Total Suspended Solids
30 0 m /L
100 m /L
2/Month
Grab
Effluent
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 (effective February 1, 2003) Page 2 of 11
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 authorized 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
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly Instantaneous Measurement Sample
Average Maximum Frequency Type
Sample
Locationl
Flow
Continuous
Pump Logs or similar
reading
Plant Intake
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', 4D'
Total Arsenic
Monthly
Grab
Effluent
H'
Weekly
Grab
Effluent
Acute Toxicity'
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 macroi rive rteb rate control The 200 fig/L limitation is an instantaneous maximum effluent limitation defined as the
value which shall not be exceeded at anytime, 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 chlorination shall be automatically controlled or a log kept of manual system operation times 17--
3
7--3 The Permittee shall operate so as to remain in compliance with the conditions outlined in the mixing zone defined in Special Condition A (18) 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 promelas) P/F @ 90%, March, June, September and December See Special Condition A (8) of this 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 (effective February 1, 2003) Page 3 of 11
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
EFFLUENT CHARACTERISTICS
LIMITS MONITORING
REQUIREMENTS
Monthly Daily Measurement
Average Maximum Frequency
Sample Type
Sample Locationi
Flow
Continuous during discharge
Pump Los
Effluent
Free Available Chlorine'
200 /L 500 /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
ThP 126 Priority Pollutants (40 CFR Part 423,
Appendix A) Exclusive of Zinc and Chromium'
No Detectable Amount
Annual
Grab
Effluent
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 may 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 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.
Total Residual Chlorine monitoring is only required if chlorine is used or discharged
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.

Permit NC0003425
PART I. WASTEWATER MONITORING, CONTROLS AND LIMITATIONS (effective February 1, 2003) Page 4 of 11
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 -
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly Instantaneous Measurement
Average Maximum Frequency
Sample Type Sample Location'
Flow
2/Month
Estimate Effluent
Total Suspended Solids
50 m /L 2/Month
Grab Effluent
Acute Toxicit z
Annually
Grab Effluent
H3
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 (Plmephales 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 NC0003425
PART I- WASTEWATER MONITORING, CONTROLS AND LIMITATIONS (effective February 1, 2003) Page 5 of 11
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 -
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly Daily Measurement Sample Sample
Avera a Maximum Fre uenc r Type Location'
Flow
0 015 MGD
Annual
Pump Los
Effluent
Biochemical Oxygen Demand (5 -day @ 20°C
30 0 m /L
45 0 m /L
Annual
Composite
Effluent
Total Suspended Solids
30 0 m /L
45 0 m /L
Annual
Composite
Effluent
Total Ammonia as N
Annual
Grab
Effluent
Hz
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 I WASTEWATER MONITORING, CONTROLS AND LIMITATIONS (effective February 1, 2003) Page 6 of 11
A. (6) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (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
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly Average
Daily Maximum
Measurement
Frequency
Sample Type
Sample Locationt
Flow
Once per Discharge Event
Pump Logs or similar
re ding
Outfall 002
Total Suspended Solids
30 0 m /L
100 m /L
Once
per Discharge Event
Grab
Outfall 002
Oil and Grease
15 0 m /L
20 0 m /L
Once
per Discharge Event
Grab
Outfall 002
Total Copper
1 0 m /L
1 0 m /L
Once
per Discharge Event
Grab
Outfall 002
Total Iron
1 0 m /L
1 0 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
and bottom ash containing metal cleaning waste is discharged into the ash pond plus the calculated detention time of the ash pond

Permit NC0003425
PART I WASTEWATER MONITORING, CONTROLS AND LIMITATIONS (effective February 1, 2003) Page 7 of 11
A. (7) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (010)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from Internal Outfall 010 (Flue
Gas Desulfurization Blowdown). Such discharges shall be limited and monitored by the Permittee as specified below
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly Average Daily Maximum Measurement
Frequency
Sample Type
Sample Locationl
Flow
Monthly
Pump Logs or similar
readings
Effluent
Total Beryllium'
Weekly
Grab
Effluent
Total Mercury
Weekly
Grab
Effluent
Total Antimony'
Quarterly
Grab
Effluent
Total Selenium'
Quarterly
Grab
Effluent
Total Silver'
Quarterly
Grab
Effluent
Total Vanadium'
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 (effective February 1, 2003)
Page 8 of 11
SPECIAL CONDITIONS
A (8). ACUTE TOXICITY TESTING PASS/FAIL PERNUT LINHT (Quarterly)
The permittee shall conduct acute toxicity tests on a quarterly 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 DENR / DWQ / Environmental Sciences Branch / Aquatic Toxicology Unit
1621 Mad 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 (effective February 1, 2003)
Page 9 of 11
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 DEN / DWQ / Environmental Sciences Branch / 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.

Permit NC0003425
PART I• WASTEWATER MONITORING, CONTROLS AND LIMITATIONS (effective February 1, 2003)
Page 10 of 11
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 the 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.
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.

Permit NC0003425
PART I• WASTEWATER MONITORING, CONTROLS AND LIMITATIONS (effective February 1, 2003)
Page 11 of 11
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 all 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.

STATE OF NORTH CAROLINA,
PERSON COUNTY
PRINTER'S AFFIDAVIT
(Notarial Seal)
PUBLIC NOTICIt- 94
_ r STATE OF NORTH CAROLINA
CC(Al�"Aduly
ENVIRONMENTAL HENT
COMMIS810N/NPQ,E$ IJNI'1'
1 `1017Mj41LSERVICECENTER
being sworn,
2 ,
�RALE1 H,,NC,06ti -017+
" 'N0,71FIGAT)ON.OR, NTfNT
-',,TO
deposes and says: That he/she is of
r ,jy -� ISSUE A Nklat `
iy . WASTEWATER-PERNIT' ;N,.,
UV
On l e'-basls oi1horounh ,staff °''
businessEiatut®f43,21,
review andspphaatfon.of NC (Iimeral
Public law42-600
The Courier -Times, with its principle place of
and
oiherlawfulstandarOsaadre�ulations, ;
,.fhe`:North Carohne7Envlr©rirrientel-,
located in the cit of Roxboro, Count of Person, State
Y Y
ManagementcCommfssiort proposes
to�issueaNaborlalRollutantDiscfiar`ge .
Elrfnination System (NPD8S)
r wastewater dischar`gge_periviit;)o the
of North Carolina, that the foregoing or attached
-OrSon(g)ilfsted bdloiy_eff®ciive 45
-dgs_fPam ,the pubhsh date =of this';
news a er notice was published in The Courier -Times,
P P P
i Progress 'Energy, Incl 17oo -
,, Dunnayray Road, SernoPa;i3C,2343
I
;,has,applied`kfmr,a modification of
' NPDES.permit N(30003428-foi .ifs,
once a week for successive weeks, beginning with
Roxboro Steam,ElectrfcavGenera(ng',
Plani,,m Person County: (This
�
day 20 l�i':J
— n
modrfication would allow for the
� ischargq of annaddibonat internal
its issue of of �,
)wastewater stream generated by the
��77��`i)'1
r- uiredflue,gas`desulfunzation This
per mfttedofacility,disoharges treated
and ending with its issue of /�J day of
:wastewater ,to Idydo Lake in the
Roanoke River Basin Currently, total
O
20 that The Couper -Times, is
fesidual chlorine is water quality
! limited -_This discharge `may affect
fulureallocationsinthisp6nizinofthe
'
ivateished - - - , " -- � - -
t -a _e Written comments,.r" ooia .t*
the sole owner and publisher of said newspaper,
-pro until
� 3o,days afterihe,pu"bfis�i dra�e;,otan�s
6666 All'commbrasrecely-' pnorfo
The Couper -Times
thal,dato'are,consideield in'�tie final
l detefhrjationsregarding the
proposed permit The Director 61 the
rrAj
NC Division of Water Quality may
/ (Affiant)
; decidetoholdapublicmbdfngforthe
prop6sed,permit should,the Onrision
I, receive a significant degree of public
interest
" Copies of the' draft- permit and
Sworn to and subscribed before me,
`other` supporting information on M6
used`todetbfmineconditfonspr'eserlt
_
this the day of 200
in the -draft permit are available upon
request and payment of the costs of
i�n
I , reproduction' Mail comments'and(or
<�
L!i2�L
k requests for informationjto the NO
Division of Water Qualdyat the above
• r,) (Notary Public)
address or call the Point Source
_
BraFrch`at [phone], extension
+1
My the alT day of 20 Cq
520 Please include the NPDESpermit
number in any ,communication.
commission expires ,
Interested persons may also visa the
Division of Water Quality -at 512 N
Raleigh, NG 27604-
betiaeemthe hours of k00 am
�{ r�1148
Fee $ � 1� I Q )
�_,Sahsbury,Street,
and e", p m to review infQ�tmahon
on file",
(Publication m
, r i
May l;
(Notarial Seal)

Draft Perrmt Reviews (2)
Subject: Draft Permit Reviews (2)
Date: Wed, 01 Jun 2005 08:56:50 -0400
From: John Giorgino <[e-mail]>
To: Dawn Jeffries <[e-mail]>
Hi Dawn, I have reviewed the following:
NC0003425 -Roxboro Steam
NC0005762 -Wagram Plant
No comments. Thanks for sending them over.
-John
John Giorgino
Environmental Biologist
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
Mailing Address:
1621 MSC
Raleigh, NC 27699-1621
Office: 919 733-2136
Fax: [phone]
Email: [e-mail]
Web Page: http://www.esb.enr.state.nc.us
1 of 1 1 1) 1)Q PAR

[te Modification of NC0003425
Subject: Re: Modification of NC0003425
Date: Thu, 04 Aug 2005 15:36:13 -0400
From: [e-mail]
To: Dawn Jeffries <dawnjef[[e-mail]>
We have no other comments; therefore, issue the permit.
Karrie-Jo Robinson -Shell, P.E.
Dawn Jeffries
<dawn.]effries@n
cmail.net>
08/04/2005 03:17
PM
Karrie-Jo,
To
Karrie-Jo Shell/R4/USEPA/US@EPA
cc
Modification of NC0003425
Subject
Just to let you know, I'm about to issue the final for the mod for the
Progress Energy -Roxboro Plant that you already reviewed. (Initial draft
dated May 25 and Revised draft dated June 22.)
You provided a no comment phone call to me June 2.
The final is no less stringent than the original draft. It has some
additional monitoring and a special condition requiring an operation and
maintenance plan and emergency response plan for the bioreactors.
I'll send a copy of course. I hope this is fine?
Thanks,
Dawn Jeffries
Eastern NPDES Program
919-733-5083, ext. 595
1 of 1 8/4/2005 3 40 PIS

to Progress Energy Mod
Subject: Re: Progress Energy Mod
Date: Fri, 05 Aug 2005 11:02.26 -0400
From: Barry Herzberg <[e-mail]>
To: Dawn Jeffries <[e-mail]>
CC: Jennie Atkins <[e-mail]>
Looks good to me - - thanks - - Barry
Dawn Jeffries wrote:
>Jennie and Barry,
>I've added the special condition, A.(18) we discussed to the permit mod
>for the Roxboro Plant. (see language below)
>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.
>If this is acceptable to you, I'll check with Louise England and send
>out the final as soon as possible...
>Thanks,
>Dawn
-F Qi5n005 11 m AT I

'rogress Energy - Roxboro
Subject: Progress Energy - Roxboro
Date: Mon, 1 Aug 2005 21:57:31 -0400
From: [e-mail]
To: "Barry Herzberg" <[e-mail]>, [e-mail]
CC: [e-mail], "Gil Vinzani" <[e-mail]>
Folks,
Just wanted to send around a summary of our meeting today, primarily so I
don't forget what we decided.
In lieu of modifying the monitoring requiements in the permit, we're going
to add a �ecial condition that requires the facility to prepare and submit
an � iat on--and-maintenances p1 - including an emergency response plan in
the event of a cility upset. In my mind, the plan needs to include an o&m
monitoring regimen to insure that the facility operates as it was intended.
I'm not necessarily interested in seeing the o&m data, but I certainly needs
to be available. This strategy should position us to handle these sort of
systems in the future.
Any other ideas?
Barry - not sure I got Jennifer's e-mail address correct. If not, could you
forward to her?
Thanks,
Mark
I of 1 9/2/2005 7 21 AM

May 25, 2005
MEMORANDUM
To: Michael Douglas
NC DENR / DEH / Regional Engineer
Raleigh Regional Office
From Dawn Jeffries
NPDES Unit
Michael F Easley, Governor
Stateiof North Carolina
,JUN 0 6 V 1 tiam G f
Department of Environment a{�d
-1'-11 ,_i'4 Jv
Subject: Review of Draft NPDES Permit NC0003425 (Major Modification)
Roxboro Steam Electric Generating Plant
Jr , Secretary
ral Resources
k, P E , Director
of Water Quality
Please indicate below your agency's position or viewpoint on the draft permit and return this form by July 1,
2005. If you have any questions on the draft permit, please contact me at telephone number [phone],
extension 595 or via e-mail at [e-mail].
RESPONSE: (Check one)
Concur[Er with the issuance of this permit provided the facility is operated and maintained properly, the stated
effluent luruts are met prior to discharge, and the discharge does not contravene the designated water quality
standards.
F-1
Concurs with issuance of the above permit, provided the following conditions are met:
1-1
Opposes the issuance of the above permit, based on reasons stated below, or attached:
�t 1 - • Date:
1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1617 - TELEPHONE [phone]/FAX [phone]
VISIT US ON THE WEB AT http //h2o enr state nc us/NPDES
�i 1 0
T q S
r
Jam,
Please indicate below your agency's position or viewpoint on the draft permit and return this form by July 1,
2005. If you have any questions on the draft permit, please contact me at telephone number [phone],
extension 595 or via e-mail at [e-mail].
RESPONSE: (Check one)
Concur[Er with the issuance of this permit provided the facility is operated and maintained properly, the stated
effluent luruts are met prior to discharge, and the discharge does not contravene the designated water quality
standards.
F-1
Concurs with issuance of the above permit, provided the following conditions are met:
1-1
Opposes the issuance of the above permit, based on reasons stated below, or attached:
�t 1 - • Date:
1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1617 - TELEPHONE [phone]/FAX [phone]
VISIT US ON THE WEB AT http //h2o enr state nc us/NPDES

DWQ POINT SOURCE Fax:[phone]
ACAC T r a n s m i -t Con -f - R e P o r -t *-*-
P.1 Aug 8 2005 14:24
Fax/Phone Number
Mode
Start
Time
Page
Result
Note
95467558
NORMAL
8,14:24
0'42"
3
# 0 K
xratcd water discharge Canal
Perwlt NC0003425
SUPPLE NT TO PERMIT COVER SKEET
All Wavluu. Mf°DHS Perumm Mucci W =3 MCJLIy, rhethr, Li, .rf,.i allwi ur rxtvchargs are herttly rcvDlred Aa of thta perUnl
--• �Nrxr, jury YmIlomsky Issued permt bconae t1La numhrr to nn 1,%„t;M cjva uve Tr. rd010, the eidugVe Quthordy to
nrrrOr anrj CIAWI ft Lw-- U,I► G1 1111.v ancec =dtr the permit r=Irtltlnna 1v1q Ucun'11Lv. leme, alis PrOV140no =Udcd
i1ctLIIL
Progress Enefgy Carolinas. Inc. is hereby authorized to.
1 C.nntlmir to OpCratc the jfollowuig systcr1u locatcd aL Roxboro Steam Electric
Uenerating Plant vel NqSR 1377 near Rnahnm tri F�ersotn Loul1q.
■ Ash Pond Treatm t System (Internal Outtall 002)- To tieet 4tli Lf.uwpurt
wdLer. low voluu3k vrwtewater mmnff from thr ash Landfall, diy fly" b 4 udliLAg
vr,kiu wash water. coal pile runoff. alln wash water storm water runoff, wuLiug
tower blowdowu tfu u uufL number 1, and domrgfir grwagc treabmucuxt plant
ettlucxxL E tluent fi m dir dbIl puad dittcharger; corn nr hrAtrd water dascbArgc
canal, and is ulhfu tely acjcdbctl iffLu Hyco Lake thrnngh (hitfRU 003
■ Heated Watei Dib large Canal System (Outfall OW11). At the point tkxat the
dfschwge caladl cif f b Hyu/ LUke, tt rnntnlnq flnnv frnm ,several vlrastc strcams
mcludffig, olxcc-duough wuling water, ntorynwarrr n,nn0' and the efllucnt from
the ash pond (0 LAW 110021
Coohng Towe& Biodown System (Internal Outfall 005). C',onitng rower
blowdown from wax nunitKi 4 J1e.1i iubcb LIfLu the uch transport system. and
ultrmatrly flows m the ash pond (UuUall 002).
■ Coal Pile Runoff Tffeztmewt
SysLem (Outfall 006). This eyetern handlen mmnff
from the coal pile 40
Wicf uudl luuidWig areas These wader are rnr Itrd to A
rrtcntion pond 101
atmcnt by neutlall4A xvfl. actlfnfeuL.ttlun, and PflnnitVnrinn
prior to being disc
gcd directly Lntu Jkyx v LAr,.
■ Domestic Wastewa
xr Treatment 9yuLwa (XuLernal Outfall 008)- Effluenr form
for, treatment sysrej
a flows into the ash pond. EiUUCAxL IAOILU We unh pond
flfgehnrgry into t?ir
xratcd water discharge Canal
■ C hcmiral Metal CI aning Treatment 6ystrm (Intex�fnal Outfall 009). 11m
wAAWIWWr lrrf may o casLonally be discharged to tlxc ash pond L,caLux uL aytiLcLu. Il
rnnTAms chrmfcal tal cleaning waste* L'Mucnt trom the ash puud LUb4lfdfgcb
,ntn thr ihratcd water discharge canal
■ Flue Gan urauffuriiatinrn Tri atmRmt System (Internal Outfall 010)- Tluy
wastr.stream fay gen rand form hlowdown fnom tlxc VGLI LULt Allcx LlcdLa=ILL iu
tnorcarterq, effl,lrrn 1111 he rf w'hprgrri mto the Ltcatcd mater dlscbaxge CdJ Z
dowmstrrom fmmio tfnll 01112 and hrfnrr Thr cAmpUng point for outfall UU2
2 After recrfving an Autlio nzation to Construct from the Division, cousti uct a xd
vllcldlc A Fluc Gdd Dr- s furzudua (FCrD) w:i:;trwntrr trratmPnt ;y.qtr.m
discharging to the ash p nd dxseharge canal tlu-oug -i utter ual outfall U 10.
3 Discharge from said tre tuent works anti/c Post-11"Fax Moto /b/1 n" ds ;L ► J
Life altuclied map roan the Byrn i,nke, r'laagt r■ !C R—, LJ �
I Q
Ruduukc Inver Bahiil. a/nWN co
Pno"o ■ S`>I & nor o n - /33-508-3
r,u: j -y - ?SSS .orR 7- _ D

NCDENR / DWQ
REVISED FACT SHEET FOR NPDES PERMIT MODIFICATION
Carolina Power and Light- (Roxboro)
NPDES No. NC0003425
Facility Information
(1.) Facility Name:
Roxboro Steam Electric Plant
(2.) Permitted Flow, MGD:
Outfall 002,
no limit
(6.) County
Person
(3.) Facility Class:
NA
(7.) Regional Office:
RRO
(4.) Facility Status:
Existing
(8.) USGS Topo Quad:
Olive Hill
(5.) Permit Status:
Modification
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:
(9.) IWC (%).
Not applicable
Summary
■ A draft permit for this proposed modification was sent to notice on May 25, 2005. The draft pernnt
was developed based upon an application dated March 30, 2005 and the information therein.
■ The application referred to a pilot study for this type of technology at the Conemaugh Station in
Pennsylvania, which was nearing completion.
■ Since the development of the draft permit, the results from the Pennsylvania study have been
received by the pernut writer and reviewed
■ A revised draft perimt/fact sheet has been developed based upon the pilot study data.
Analysis
Pilot Plant Metal Removal Data was provided in Appendix C of the final report and is summarized below.
The data includes five to eight sampling events over a three-month period for arsenic, antimony, barium,
beryllium, chromium, cobalt, copper, lead, manganese, mercury, molybdenum, silver, vanadium, and
zinc Since this data differed significantly from the data used to initially develop the draft pernut for this
modification, I have reviewed it separately
Predicted effluent amounts have been calculated based upon maximum influent concentrations and
worst-case removal rates.
In cases where a parameter showed an effluent value after the second bioreactor to be higher than the
influent concentration, the worst-case removal rate was considered to be zero.
In cases where a parameter showed the highest effluent value to be higher than the highest influent
value, the highest effluent value was used for calculations.

NPDES PERMIT FACT SHEET
CP&L- Roxboro
Page 2 NPDES No. NC0003425
Metal
Influent
Concentration
Range (gg/L)
Final Effluent
Concentration
Range (gg/L)
Percent
Removal
Range
k1—?;toyS4�d,,
'Worst -Case' Cone.
(gg/L) after
Internal Dilution
(312:1)
Chronic Water
Quality
Standards (gg/L)
Antimony
<04-478
<04-304
0->90
0.015
56
Arsenic
< 7 5 - 53 7
< 7.5 4 15.2
>17 - >86
0 143
10.0
Barium
153-730
261-634
0
2.340
10000
Beryllium
< 1 0 - 1 5
1.6-82.1
0
0.263;
0 0068,
Chromium
6-56.8
6.1 - 10.9
0-87
0 182
50.0
Cobalt
3 3 - X185
5 1-248
0-97
0.593
650
Copper
128-701
22-53.6
92-99
0180
70
Lead
10.2-324
< 0 75 - 385
0-99
1.240
250
Manganese
29,700-61,600
35,600-64,400
0-15
206 4
200.0,
Mercury
012-10.3
0 0546 - 0.121
0-99
0.033,
0 012'
Molybdenum
38-818
< 1.0 - 1.9
50-98
0 262
170.0
Selemum*
181-4,000
3-2100
61-100
5.045;
5.0
Silver
< 0.75 - 7 61
< 0 75 - 6.54
14-89
0.021
0.06
Vanadium
353-128
428-114
0-11
0 410
24.0
Zinc
129-576
0-498
74-100
0 480
50.0
* Influent Selenium values were spiked to simulate operations at higher selenium levels. Expected
influent values under normal operations are expected to range from 1.0 mg/L to 4.0 mg/L.
Results
Beryllium, manganese, mercury, and selenium show potential to be discharged in amounts that may
exceed water quality standards Therefore weekly monitoring will be added. Monitoring requirements for
other parameters will not be added at this time
In the first draft, additional monitoring was added at outfall 003 since this is the point of discharge to
surface waters and regulations do not require an internal outfall for this type of process operation
However, after discussion with Mr. Roy Byrd of DW9's laboratory section, monitoring is being changed to
an internal outfall before mixing with other wastestreams. This is because the water quality standard for
beryllium is 0.0068 jig/L, while the lowest quantitation level for it is substantially higher (0 5 gg/L) From
the data persented so far, it is reasonable to expect that the beryllium levels at outfall 003 could be above
the water quality standard but below the quantitation level. More meaningful data can be obtained before
dilution, where levels (either above or below the quantitation level) would make it possible to indicate
whether the parameter would exceed standards in surface waters or not
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: May 25, 2005.
Permit Scheduled to Issue: July 18, 2005.
Because the draft permit was sent to public notice May 25, 2005, and this revised draft is more stringent
than the original, the public notice already done is sufficient and the scheduled issuance date remains
the same.
State Contact
If you have any questions on any of the above information or on the attached permit, please contact
Dawn Jff es at (919) 33-5083, extension 595
NAME: DATE: �� S
Regional Office Co me s
NAME:
SUPERVISOR: DATE:

NCDENR / DWQ
FINAL FACT SHEET FOR NPDES PERMIT MODIFICATION
Carolina Power and Light- (Roxboro)
NPDES No. NC0003425
Facility Information
(1.) Facility Name:
Roxboro Steam Electric Plant
(2.) Permitted Flow, MGD:
Outfall 002,
no limit
(6.) County:
Person
(3.) Facility Class:
NA
(7.) Regional Office:
RRO
(4.) Facility Status:
Existing
(8.) USGS Topo Quad:
Olive Hill
(5.) Permit Status:
Modification
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:
(9.) IWC (%):
Not applicable
Summary
■ A draft permit for this proposed modification was sent to notice on May 25, 2005 The draft permit
was developed based upon an application dated March 30, 2005 and the information therein
■ The application referred to a pilot study for this type of technology at the Conemaugh Station in
Pennsylvania, which was nearing completion
■ Since the development of the draft permit, the results from the Pennsylvania study have been
received by the permit writer and reviewed
■ A revised draft permit/fact sheet was developed based upon the pilot study data
■ The revised draft permit/fact sheet was modified to construct the final permit/fact sheet based upon
a conversation with Louise England of Progress Energy
Analysis
Upon review of the revised fact sheet and draft permit, Louise England of Progress Energy contacted me
She gave the following three comments
• She agreed that the lowest removal rates exhibited at the Conemaugh Station were acceptable
values to assume for system performance
• She pointed out, however, that the removal rates for the first three weeks of the study were not
indicative of system performance due to sufficient colonies not yet being established in the
bioreactors Also, she noted that the data from January 12, 2005 was also not reliable due to the
plant experiencing problems with solids that day which interfered with treatment
• Her final concern was that the projected influent values provided in the application should be
used in the analysis rather than actual influent data gathered at the Conemaugh Station This is
because influent values can differ significantly depending upon the source of the coal, and the
projected values were determined specifically based upon the coal used at this plant
The permit waster agrees that the projected influent values should be used for the analysis, but does not
agree that some data should be excluded The results of the analysis are depicted below

NPDES PERMIT FACT SHEET
Page 2
CP&L- Roxboro
NPDES No. NC0003425
Parameter
Projected
Influent
Concentration
(Pg/L)
Lowest
Percent
Removal in
Pilot Stud
Effluent
Concentration
(pg/L)
Concentration
(pg/L) after
Internal Dilution
(312:1)
Chronic Water
Quality
Standards (µg/L)
Antimony
333
0
333
1.07
6.6
Arsenic
193
17
1602
051
100
Barium
2512
0
2512
805
10000
Beryllium
188
0
188
060
0.0068
Boron
608
*
608
1 9
7500
Cadmium
19
19
006
2 0
Chloride**
6905
6905
22 1
2300
Chromium
95
0
95
030
500
Cobalt
21
0
21
007
65 0
Copper
375
93
26
008
7 0
Fluoride
12
12
004
1 8
Lead
101
0
101
033
250
Manganese
2204
0
2204
706
2000
Mercury
9
0
9
0.014
0.012
Molybdenum
9413
50
47065
15 1
1700
Nickel
415
415
1 3
250
Selenium
1279
61
4988
1.6
5.0
Silver
7 6
14
6 5
0.02
0.06
Sulfate
2441
2441
7 8
2500
Thallium
2
2
0 006
035
Vanadium
3155
0
3155
10.11
24.0
Zinc
1609
94
965
031
500
* No Removal Data available
**Chloride concentrations are in mg/L
The above analysis is very environmentally conservative
• All parameters listed as pollutants of concern have been considered based upon the expected
blowdown concentration and lowest removal rates observed during the pilot study (excluding no
data) Actual removal rates are expected to be much better once the systems are established and
personnel gain experience operating them
• Where no data was available, no significant removal is assumed
• The lowest internal flow over the past year was determined, and was divided by the 1 92 MGD
estimated flow for the FGD process to determine the most conservative dilution estimate
• External dilution was not considered, but the expected concentrations at the end of pipe (003)
were compared to WQ standards
Results
Beryllium and mercury appear to have potential to be discharged in amounts that may approach or
exceed water quality standards Therefore weekly monitoring will be added
Expected effluent values for antimony, selenium, silver, and vanadium indicate that more data could be
useful in determining potential Therefore quarterly monitoring will be added
Expected values for all other parameters are so far below levels that would be of concern that the permit
writer does not recommend monitoring at this time
As in the revised draft, monitoring for beryllium and mercury is being required at an internal outfall in
order to obtain data above the laboratory detection levels without having to use more difficult and
expensive sampling techniques Sampling for selenium, antimony, silver, and vanadium is also being
included at the internal sampling point for now
State Contact
If you have any questions on any of the above information or on the attached permit, please contact
Dawn Jeffries at [phone], extension 595

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NCDO03425
200 Progress Energy Carohna
Person
Raleigh
003
4
23
2004
50050 -Flow .,Flaw
Recorder mgd
7625
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
4
24
2004
50050 -Flan .,Flow
Recorder mgd
7546
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
4
25
2004
50050 -Flow I.Flow
Recorder mgd
7546
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
4
26
2004
50050-Flow.,Flow
Recorder mgd
7628
DLYVAWE EFF 03-02-05
NCOW3425
200 Progress Energy Carolina
Person
Raleigh
003
3
27
2004
50050- Flow .,Few
Recorder mgd
763
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
4
28
2004
50050- Flow .,Flow
Recorder mgd
7628
DLYVALUE EFF 030205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
4
29
2004
50050 -Flow nFew
Recorder mgd
7625
DLYVALUE EFF 03-02-05
NC0003425
2 00 Progress Energy Carolina
Person
Raleigh
003
4
30
2004
50050 - Flow ., Flow
Recorder mgd
7619
DLYVALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carding
Person
Raleigh
003
5
1
2004
50050 -Flow itFlow
Recorder mgd
7546
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
2
2004
50050 -Flow itFlow
Recorder mgd
7546
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
3
2004
50050 -Flow,., Flow
Recorder mgd
7711
DLYVALUE EFF 03.0205
NC0003425
200 Progress Energy Caroline
Person
Raleigh
003
5
4
2004
50050 -Flow 1,Flow
Recorder rrgd
9986
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
5
2004
50050 - Flow ., Flow
Recorder mgd
11092
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carohna
Person
Raleigh
003
5
6
2004
50050- Flow, .,Few
Recorder mgd
1109
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
7
2004
50050 -Flax itFlow
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carona
Person
Raleigh
003
5
8
2004
50050 -Flow iiFlow
Recorder mgd
10961
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
9
2004
SOD50-Flow itFt—
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
10
2004
50050-Flax.,Flow
Recorder ngd
11081
DLYVALUE EFF 03-02-0.5
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
11
2004
5OD50- Flow .,Row
Recorder ngd
11081
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
12
2004
50050 -Flow , Flow
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
2 W Progress Energy Carolina
Person
Raleigh
003
5
13
2004
50050 Flow .,Flow
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
14
2004
50050-Flox,n Few
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
5
15
2004
50050- Flow .,Flow
Recorder mgd
7546
DLYVALUE EFF 03-02-05
NCDD03425
200 Progress Energy Carding
Person
Raleigh
003
5
16
2004
50050-Flow.,Row
Recorder mgd
7546
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carohna,
Person
Raleigh
003
5
17
2004
50050 -Flow,., Flow
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Caroling
Person
Rel.gh
003
5
18
2004
50050-Flow.,Flaw
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
5
19
2004
50050-Flow..Flow
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina:
Person
Raleigh
003
5
20
2004
500.50- Flow ,Flow
Recorder mgd
11083
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
21
2004
50050 -Flax uFlow
Recorder mgd
11079
DLYVALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
22
2004
50050 -Flow nFlow
Reorder mgd
10961
DLYVALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina,
Person
Raleigh
003
5
23
2004
50050-Flow.,Flow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleagh
003
5
24
2004
50050 -Flaw .,Flow
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
25
2004
50050-Fl—,.,Flaw
Recorder mgd
11079
DLYVALUE EFF 03-02-0
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
26
2004
50050 - Flow ., Few
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Enemy Caroline
Person
Raleigh
003
S
27
2004
50050 -Flow .,Flow
Recorder mgd
1112
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
28
2004
50050 -Flow itFlow
Recorder mgd
11109
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
5
29
2004
50050 -Flow, it Flow
Recorder mgd
10961
DLYVALUE EFF 0302-05
NCOOD3425
200 Progress Energy Carolina
Person
Raleigh
003
5
30
2004
50050 -Flow itFlow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina
Person
Raleigh
003
5
31
2004
50050-Flow.,Flow
Reorder mgd
1096
DLYVALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina
Person
Raleigh
003
6
1
2004
50050- Flow ., Flow
Reorder mgd
11083
DLYVALUE EFF 03-02 05
NCW03425
200 Progress Energy Carohna
Person
Raleigh
003
6
2
2004
50050 -Flow itFlow
Recorder mgd
11079
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
3
2004
50050- Flow ,Few
Recorder mgd
7664
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
4
2004
50050 -Flow,., Flow
Reorder mgd
7727
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Cari
Person
Raleigh
003
6
5
2004
50050- Flow .,Flow
Recorder mgd
7546
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
6
2004
50050- Few .,Flow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
7
2004
50050 -Flow it Flow
Recorder mgd
11126
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
8
2004
50050 - Flow ., Flow
Reorder mgd
1108 6
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
9
2004
50050-Flaw,.,Raw
Reordar mgd
11062
DLYVALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
10
2004
50050 -Fl—.,, Fico
Recorder Md
11062
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carding
Person
Raleigh
003
6
11
2004
50050-Flow.,Flaw
Reorder ngd
11062
DLYVALUE EFF 03-02-05
NCOD03425
200 Progress Energy Carolina
Person
Raleigh
003
6
12
2004
50050 -Flow nFlow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NCOD03425
200 Progress Energy Carolina
Person
Raleigh
003
6
13
2004
50050- Flow .,Raw
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NCWD3425
200 Progress Energy Carolina
Person
Raleigh
003
6
14
2004
50050-Flow.,Flow
Recorder mgd
11066
DLYVALUE EFF 03-02-05
NCOOD3425
2W Progress Energy Carolina
Person
Raleigh
003
6
15
2004
50050 -Flow,., Flow
Recorder mgd
11071
DLYVALUE EFF 03-02-05

NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
16
2004
50050 -Flax I.Flow
Recorder mgd
11107
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
17
2004
50050 -Flow, h Flow
Recorder mgd
11102
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardona
Person
Raleigh
003
B
18
2004
50050 -Flew,. Flaw
Recorder mgd
1110
DLYVALUE EFF D3-02-05
NC0003425
200 Progress Energy Carolma
Person
Raleigh
003
6
19
2004
50050 -Flow isFlow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
20
2004
50050-Flmii Flew
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
21
2004
50050 - Flow, li Flaw
Recorder mgd
11066
DLYVALUE EFF 03-02 05
NCDO03425
200 Progress Energy Carolina
Person
Ralagh
003
6
22
2004
50050 -Flan li Flow
Recorder mgd
11066
DLYVALUE EFF 03-02-05
NCDD03425
200 Progress Energy Carolina
Person
Raleigh
003
6
23
2004
50050 -Flax ,,Flow
Recorder mgd
11056
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
24
2004
50050 -Flow fiFlow
Recorder mgd
11064
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
25
2004
50050 -Flow, n Flax
Recorder mgd
11062
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
26
2004
5OD50-Flow ii Flaw
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
Z7
2004
50050 -Flaw, I,Flow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
28
2004
50050 -Flax, Ii Flow
Recorder mgd
11066
DLYVALUE EFF 03-02-05
N00003425
200 Progress Energy Carolina
Person
Raleigh
003
6
29
2004
50050-Flaw,,,Flaw
Recorder mgd
11058
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
6
30
2004
50050-Flaw,,Flow
Recorder mgd
11058
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
1
2004
50050-Flaw,uFlox
Recorder mgd
11058
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
2
2004
50050 Flow,,,Flow
Recorder mgd
11056
DLYVALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
3
2004
50050 -Flow,,, Flow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardona
Person
Raleigh
003
7
4
2004
50050 -Flow,,, Flaw
Recorder mgd
10961
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
5
2004
50050 -Flow isFlow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
N00003425
200 Progress Energy Carolina
Person
Raleigh
D03
7
6
2004
50050- Flow ..Flow
Recorder mgd
11054
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
7
2004
50050 -Flow,.. Flaw
Recorder mgd
11054
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
8
2004
50050 -Flow isFlow
Recorder mgd
11054
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carding
Person
Raleigh
003
7
9
2004
50050-Flaw,,,Flow
Recorder mgd
11054
DLYVALUE EFF D3-02-05
NC0003425
200 Progress Energy Cardmg
Person
Raleigh
003
7
10
2004
50050-Flaw,,Flow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
DD3
7
11
2004
50050-FIaw,,Flow
Recorder rtgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardona
Person
Raleigh
003
7
12
2004
50050 -Flow,,, Flaw
Recorder mgd
11056
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
13
2004
50050 -Flow n Flow
Recorder mgd
11054
DLYVALUE EFF 03-02 05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
14
2004
50050- Flow h Flaw
Recorder mgd
11054
DLYVALUE EFF 0302 05
NCOOD3425
200 Progress Energy Cardura
Person
Raleigh
003
7
15
2004
50050-Flaw,,Flow
Recorder mgd
11054
DLYVALUE EFF 03 -02 -OS
NC0003425
200 Progress Energy Cardura
Person
Raleigh
003
7
16
2004
50050- Flow ,,Flow
Recorder mgd
11054
DLYVALUE EFF 0302-05
NCDO03425
200 Progress Energy Cardona
Pecan
Raleigh
003
7
17
2004
50050 -Flow,. Row
Recorder mgd
7546
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
18
2004
50050-Flow,,,Flow
Recorder mgd
630
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
19
2004
50050 -Flow, Ii Flaw
Recorder mgd
629
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
20
2004
50050 -Flow ii Flow
Recorder mgd
9809
DLYVALUE EFF 03-02-05
NCOOo3425
2n0 Progress Energy Cgdina
Person
Raleigh
003
7
21
2004
50a50 -Flory hFlea
Retarder singe!
11054
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardona
Person
Rdelgh
003
7
22
2004
50050 -Flea ,Flax
Recorder mgd
11054
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Cadma
Person
Raleigh
D03
7
23
2004
50050 -Flow,. Flax
Recorder rtgd
11064
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
24
2004
50050-Flaw,Flow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
25
2004
5DO50- Flow, ,, Flow
Recorder mgd
10961
DLYVALUE EFF 0302-05
NCOD03425
200 Progress Energy Carolina
Person
Raleigh
003
7
26
2004
50050-FIOw..Flaw
Recorder mgd
11066
DLYVALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
7
27
2004
50050 -Flow, Is Flow
Recorder mgd
11066
DLYVALUE EFF 03-02-05
NC00D3425
200 Progress Energy Carolina
Person
Raleigh
003
7
28
2004
50050 -Flax Is Flax
Recorder mgd
11085
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
7
29
2004
50050-Flow,Flaw
Recorder mgd
11094
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
D03
7
30
2061
50050- Flow, n Flow
Recorder mgd
1725 9
DLYVALUE EFF 03-02 M
NC0003425
200 Progress Energy Carolina
Person
Ralargh
D03
7
31
2004
50050 -Flow,,, Flow
Recorder mgd
1096
DLYVALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
8
1
2004
50050 -Flow, h Flaw
Recorder mgd
10961
DLYVALUE EFF 0342-05
NC0003425
200 Progress Energy Carolina
Persian
Raleigh
003
B
2
2004
50050 - Flaw, 6 Flaw
Recorder mgd
11098
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardin.
Person
Raleigh
003
8
3
2004
50050 -Flaw isFlox
Recorder mgd
11098
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
8
4
2004
5OD50-Flow, h Flow
Recorder mgd
11104
DLYVALUE EFF D3-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
8
5
2004
50050 -Flow, Is Flow
Recorder mgd
11098
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
8
6
2004
50050 -Flow ii Flax
Recorder mgd
11098
DLYVALUE EFF 03-02-M
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
8
7
2004
5OD50- Raw ,,Flow
Recorder mgd
10961
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
8
8
2004
50050 - Flow n Flaw
Recorder mgd
10961
DLYVALUE EFF 03-02-05

NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
E
9
2004
50050-FI—it Flow
Recorder ngd
11066
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
E
10
2004
50050 - Flow m Row
Recorder mgd
11066
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
E
11
2004
50050- Flow ,Flaw
Recorder mgd
11066
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
E
12
2001
50050 Flow ,Flow
Recorder mgd
11079
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
E
13
2004
50050 -Flown Raw
Recorder mgd
11073
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
E
14
2004
50050 - Flaw, n Flow
Recorder mgd
10961
DLWALUE EFF 03-02 05
NCDD03425
200 Progress Energy Carolina
Person
Raleigh
003
a
15
2004
50050-Flow,Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Caralina
Person
Raleigh
003
a
16
2004
50050 -Flaw ,Flow
Recorder mgd
11126
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
a
17
2004
50050- Flow ,Flow
Recorder mgd
11136
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
a
18
2004
50050-Fl—nFlow
Recorder mgd
11133
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
a
19
2004
50050 -Flow, it Flow
Recorder mgd
11117
DLWALUE EFF 030205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
a
20
2004
50050- Flow ,Flow
Recorder mgd
1110
DLWALUE EFF 0302-05
NCOM3425
200 Progress Energy Carolina
Person
Raleigh
003
a
21
2061
50050-Flmit Ff—
Recorder mgd
10961
DLWALUE EFF 03-02-5
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
3
22
2004
50050 -Flow nFlow
Recorder mgd
10961
DLWALUE EFF 03-0205
NCDD03425
200 Progress Energy Carolina
Person
Raleigh
003
3
23
2004
50050- Flow ,Flow
Recorder mgd
1110
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
3
24
2004
50050 -Flaw uFlow
Recorder mgd
11092
DLWALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina
Person
Raleigh
003
3
25
2004
50050 -Flaw It Flow
Recorder mgd
11092
DLWALUE EFF 03-02-05
NCGOD3425
200 Progress Energy Carolina
Permn
Raleigh
003
3
26
2004
50050-Flow,Flow
Recorder mgd
11092
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
3
27
2004
50050 - Flaw, n Flow
Recorder mgd
11073
DLWALUE EFF 03-02 05
NCOGD3425
200 Progress Energy Carolina
Person
Raleigh
003
3
28
2004
50050 -Flow , Flaw
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
3
29
2004
50050 -Flaw,, Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
3
30
2004
50050 -Flow it Flaw
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
27
2004
50050-Flow,Flow
Recorder mgd
i
DLWALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina
Person
Raleigh
003
3
31
2004
50050 -Flaw ,Flow
Recorder mgd
11563
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
1
2004
50050 -Flow,, Flow
Recorder mgd
11322
DLWALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina
Person
Raleigh
003
9
2
2004
50050- Flow ,Flow
Recorder mgd
11176
DLWALUE EFF 0302-05
NCDOD3425
200 Progress Energy Carolina
Person
Raleigh
OD3
9
3
2004
50050-Flaw,Flow
Recorder mgd
11122
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
4
2004
50050 -Flaw,, Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Persian
Raleigh
003
9
5
2004
50050 -Flaw,, Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
6
2004
50050 -Flow,, Flow
Recorder mgd
10961
DLWALUE EFF 03-02 D5
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
7
2004
50050- Flow ,Flow
Recorder mgd
11073
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
B
2004
50050 -Flory it Flaw
Recorder mgd
11102
DLWALUE EFF 03-02-05
NCOD03425
200 Progress Energy Carolina
Person
Raleigh
003
9
9
2004
50050 -Flow It Mm
Recorder mgd
11094
DLWALUE EFF 03-02-05
NCM03425
200 Progress Energy Carolina
Person
Reletgh
OD3
9
10
2004
50050-Flm,Flaw
Recorder mgd
11104
DLWALUE EFF 03-02-05
NC000U25
20o Progress Energy Carolina
Person
Raleigh
003
9
11
2004
50050 -Flow 1,Flow
Recorder mgd
10981
DLWALUE EFF 0302-05
NCOD03425
200 Progress Energy Carolina
Parson
Raleigh
003
9
12
2004
50050 -Flow ii Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NCODD3425
200 Progress Energy Carolina
Person
Raleigh
003
9
13
2004
50050 -Flow it Flow
Recorder mgd
1110
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
14
2004
50050 -Flow it Flow
Recorder mgd
11088
DLWALUE EFF 03-02-05
NCDOD3425
200 Progress Energy Carolina
Person
Raleigh
003
9
15
2004
50050-Flow,,,Fl—
Recorder mgd
11096
DLWALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
9
16
2004
50050-Flow,Raw
Recorder mgd
11088
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
17
2004
50050 -Flaw it Flow
Recorder mgd
11083
DLWALUE EFF 03-0205
NC00D3425
200 Progress Energy Carolina
Person
Raleigh
003
9
18
20134
50050 -Flow ,Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
9
19
2004
50050 -Flow itFlow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
20
2004
50050 -Flow li Flow
Recorder mgd
11104
DLWALUE EFF 03-0205
NCOM3425
200 Progress Energy Cerolina
Person
Raleigh
003
9
21
2004
50050-Flow,Flow
Recorder mgd
11092
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carcina
Person
Raleigh
003
9
22
2004
50050-Fl—,,Flow
Recorder mgd
11079
DLWALUE EFF 03-0205
NCOD03425
200 Progress Energy Carolina
Person
Raleigh
003
9
23
2004
50050 -Floor ,, Flow
Recorder mgd
11066
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
24
2004
50050 -Flaw ,Flow
Recorder mgd
11073
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
25
2004
50050 -Flow ii Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Persian
Raleigh
003
9
26
2001
50050-Flow,nFlow
Recorder ngd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
27
2004
50050-Flow,Flow
Recorder mgd
11069
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
28
2004
50050- Flow ,Flow
Recorder mgd
11069
DLWALUE EFF 03.02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
9
29
2004
50050 -Flow nFlow
Recorder mgd
11073
DLWALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
9
30
2004
50050-Flow,Flow
Recorder ngd
11073
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
1
20134
50050 -Flaw,, Flow
Recorder mgd
11071
DLWALUE EFF 03-02-05

NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
2
2004
50050- Flow it Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
3
2004
50050 -Flaw, n Flaw
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Enegy Carolina
Person
Raleigh
003
10
4
2004
50050-Flory.,Flaw
Recorder mgd
11067
DLWALUE EFF 03-02-05
NCODD3425
200 Progress Energy Carolina
Person
Raleigh
003
10
5
2004
50050-Flow.,Flow
Recorder mgd
11086
DLWALUE EFF 03-02-05
NCOD03425
200 Progress Energy Carolina
Person
Raleigh
003
10
6
2004
50050 -Flow, n Flow
Recorder mgd
11064
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
7
2004
50050 -Flow, li Flow
Recorder mgd
11062
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
8
2004
50050-Flow.,Row
Recorder mgd
11064
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
9
2004
50050 -Flow ii Flow
Recorder mgd
7546
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardura
Person
Raleigh
003
10
10
2004
50050- Flow "Flav
Recorder mgd
7546
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
it
2004
50050 - Flow ., Flow
Recorder mgd
1106
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
12
2004
50050 -Flow ii Flow
Recorder mgd
1106
DLWALUE EFF 03.0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
13
2004
50050 -Flow ii Flaw
Recorder mgd
1106
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
14
2004
50050 -Flow, h Flow
Recorder mgd
11064
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
15
2004
50050 -Flow hHow
Recorder mgd
11062
DLWALUE EFF 03-02-05
N00003425
200 Progress Energy Carolina
Person
Raleigh
003
10
16
2004
50050-Flow,uFlow
Recorder mgd
10961
DLWALUE EFF 03-02-05
N00003425
200 Progress Energy Carolina
Person
Raleigh
003
10
17
2004
50050 -Flow, u Flow
Recorder mgd
10961
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
18
2004
50050 -Flow, n Flow
Recorder mgd
11054
DLWALUE EFF 0302-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
10
19
2004
50050-Flow.,Flow
Recorder mgd
11054
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
20
2004
50050 -Flow ,Flow
Recorder mgd
11096
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
21
2004
50050 -Flow, n Flow
Recorder mgd
11075
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
22
2004
50050- Flow, "Flow
Recorder mgd
11069
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Camhna
Person
Raleigh
003
10
23
2004
50050- Flow, "Flow
Recorder mgd
347
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardona
Persian
Raleigh
003
10
24
2004
50050 -Flaw 1,Flow
Recorder mgd
847
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
25
2004
50050-Flow,n Flow
Recorder mgd
11062
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardona
Person
Raleigh
003
10
26
2004
50050 -Flow hFlow
Recorder mgd
11062
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
27
2004
50050 -Flaw i Flow
Recorder mgd
1106
DLWALUE EFF 03-02 05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
28
2004
50050 -Flaw Ii Flow
Recorder mgd
1106
DLWALUE EFF 03 -02 -OS
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
29
2004
50050 -Flow, h Flow
Recorder mgd
11058
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
30
2004
50050 -Flow li Raw
Recorder mgd
10961
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
10
31
2004
50050- Flow .,Flaw
Recorder mgd
1096
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
1
2004
50050 -Flow hFlaw
Recorder mgd
1106
DLWALUE EFF 03-02-05
NCOD03425
200 Progress Energy Carolina
Person
Raleigh
003
11
2
2004
50050 -Flow .,Flaw
Recorder mgd
11056
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
3
2004
50050 Flow nFlow
Recorder mgd
11058
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
4
2004
50050 -Flow 1,Flow
Recorder mgd
11058
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
5
2004
50050 - Flow, n Flaw
Recorder mgd
11066
DLWALUE EFF 03-02-05
NCOM3425
200 Progress Energy Carolina
Person
Raleigh
003
11
6
2004
50050 -Flaw bFlow
R.—der mgd
11064
DLWALUE EFF 03--02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
7
2004
50050 -Flow hnow
Recorder mgtl
11062
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Ralargh
003
11
8
2004
50050 -Flow, Ii Flo/
Recorder rtgd
11062
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
9
2004
50050 -Flow, h Flaw
Recorder mgd
11058
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
10
2004
50050 -Flow, li Flow
Recorder mgd
11058
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
11
2004
50050 -Flaw "Flaw
Recorder mgd
11058
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
12
2004
50050 -Flow n Flaw
Recorder mgd
1106
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Cardona
Person
Raleigh
003
11
13
2004
50050 -Flaw uFlow
Recorder mgd
11279
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
14
2004
50050-Flow"Holy
Recorder mgd
11164
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
15
2004
50050 -Flow, h Flow
Recorder mgd
11122
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
16
2004
50050 -Flow, h Flow
Recorder mgd
11104
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
17
2004
50050-Flaw,.,Flow
Recorder ngd
11092
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
18
2004
50050-Flow.,Flow
Recorder mgd
11083
DLWALUE EFF 03-02-05
NCODD3425
200 Progress Energy Carolina
Person
Raleigh
003
11
19
2004
50050 -Flow nFlow
Recorder mgd
11079
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carehna
Person
Raleigh
003
11
20
2004
50050-Flow,.,Flow
Recorder mgd
7704
DLWALUE EFF 03 -02 -OS
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
21
2004
50050 -Flow hFlow
Recorder mgd
6015
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
22
2004
50050-Flow,"Flaw
Recorder mgd
6013
DLWALUE EFF 03-02-05
NC0003425
ZOO Progress Energy Carolina
Person
Raleigh
003
1123
2004
50050 - Flow ., Row
Recorder mgd
6015
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Ralargh
003
11
24
2004
50050-Flaw,nRow
Recorder mgd
6036
DLWALUE EFF 03412-05

NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
1
25
2004
50050-Fbw,Flow
Recorder mgd
6044
DLWALUE EFF 03-02-05
NCDDD3425
200 Progress Energy Carolina
Person
Raleigh
003
1
26
2004
50050 -Flow ,,Flow
Recorder mgd
6027
DLWALUE EFF 0302-05
NCDD03425
200 Progress Energy Carolina
Person
Raleigh
003
1"
27
2004
50050 -Flory ,,Flow
Recorder mgd
6017
DLWALUE EFF 03-02-05
003
-2
25
2004
50050 -Flow iFlaw
Recorder mgd
11077
DLWALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina Person
Raleigh
003
NC0003425
200 Progress Energy Carolina
Peracn
Raleigh
003
11
28
2004
50050 -Flow .,Flay
Recorder mgd
5901
DLWALUE EFF 0302-05
27
2004
50050 -Flow,,, Floc
Recorder mgd
11088
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
l
28
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
it
29
2001
50050 -Flow ,,Flow
Recorder mgd
- 605
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
11
30
2004
50050 -Flow, Ii Flow
Recorder mgd
9404
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
1
2004
500.50-Flow,u Flow
Recorder mgd
11075
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
2
2004
5OD50-Fl— i, R—
Recorder mgd
11079
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
3
2004
50050 -Flow,,, Flow
Recorder mgd
11079
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
4
2004
50050-Flow,,Flaw
Recorder mgd
11073
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
13
5
2004
50050 -Flow ,Flm
Recorder mgd
11069
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
6
2004
50050 -Flow, a Flow
Recorder migd
11066
DLWALUE EFF 030205
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
12
7
2004
50050 -Flown Flow
Recorder mgd
11071
DLWALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina
Person
Raleigh
003
12
8
2004
50050 -Flow uFlow
Recorder mgd
11066
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
9
2004
50050-Flow..Flow
Recorder mgd
11066
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
10
2004
50050 -Flow,,, Flow
Recorder mgd
11474
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
11
2004
50050- Flow ,,Flow
Recorder mgd
11388
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
12
2004
50050 Flow n Flow
Recorder mgd
1123
DLWALUE EFF 03-02-05
NCODD3425
200 Progress Energy Carolina
Person
Raleigh
003
12
13
2004
50050 -Flaw ii Flow
Recorder mgd
11152
DLWALUE EFF 03-02-05
NCDD03425
200 Progress Energy Carolina
Person
Raleigh
003
12
14
2004
50050 -Floe aFlo+
Recorder mgd
11133
DLWALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina
Person
Raleigh
003
12
15
2004
50050- Flow ,,Flow
Recorder mgd
11104
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
16
2004
50050-Floc,,Flow
Recorder mgd
11102
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
12
17
2004
50050 -Flow,,, Flow
Recorder mgd
11111
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
t2
18
2004
50050 -Flow ,,Flow
Recorder mgd
11096
DLWALUE EFF 03-02-05
NC0003425
200 Progress Enegy Carolina
Person
Raleigh
003
t2
19
2004
50050 -Flow ,,Flow
Recorder mgd
11094
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina
Person
Raleigh
003
t2
20
2004
50050 -Flaw uF1ow
Recorder mgd
11107
DLWALUE EFF 0302-05
NCODD3425
200 Progress Energy Carolina
Person
Raleigh
003
t2
21
2004
50050 -Flow ,,Flow
Recorder mgd
11138
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
-2
22
2004
50050 -Flow, n Flow
Recorder mgd
10007
DLWALUE EFF 03-02-05
NCOD03425
200 Progress Energy Carolina Person
Raleigh
003
-2
23
2004
50050-Flaw,,Flow
Recorder mgd
7709
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy CaroOna Person
Raleigh
003
2
24
2004
50050-Flov,n Flow
Recorder mgd
9958
DLWALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina Person
Raleigh
003
-2
25
2004
50050 -Flow iFlaw
Recorder mgd
11077
DLWALUE EFF 03-02-05
NCOOD3425
200 Progress Energy Carolina Person
Raleigh
003
12
26
2004
50050-Flow,,Flo+
Recorder mgd
11083
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
12
27
2004
50050 -Flow,,, Floc
Recorder mgd
11088
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
12
28
2004
50050 -Flow iFlmw
Recorder mgd
11094
DLWALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
12
29
2004
50050 Flow ,,Flow
Recorder mgd
11098
DLWALUE EFF 0302-05
NCDOD3425
200 Progress Energy Carolina Person
Raleigh
003
12
30
2004
50050 -Flow ,,Flow
Recorder mgd
8601
DLWALUE EFF 03-02-05
NCDDD3425
200 Progress Energy Carolina Person
Raleigh
003
12
31
2004
50050 -Flow aFlow
Recorder mgd
859
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
1
2005
50050 -Flow i,Flow
Recorder mgd
8582
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
D03
1
2
2005
50050 -Flown Fl—
Recorder mgd
9824
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
3
2OD5
50050 -Flow n Floe+
Recorder mgd
11071
DLWALUE EFF 0302 05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
4
2005
50050 -Flow nFlow
Recorder mgd
1110
DLWALUE EFF 03-02-05
NCOD03425
200 Progress Energy Carolina Person
Raleigh
003
1
5
2005
50050 -Flow,,, Flow
Recorder rtgd
11075
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
6
2005
50050-Flow,,Flew
Recorder mgd
11094
DLWAWE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
7
2005
50050 -Floe,., Flow
Recorder mgd
11115
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
8
2005
50050 -Flow ,,Flow
Recorder mgd
11126
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
9
2005
50050- Flown Flow
Recorder mgd
1112
DLWALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
10
2005
50050-Flow,nFlow
Recorder mgd
11113
DLWALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina Person
Raleigh
003
1
11
2005
50050-Flow,,Flow
Recorder mgd
11107
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
12
2005
50050 - Flow, n Floe
Recorder mgd
11092
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
13
2005
50050 - Flow a Flay
Recorder mgd
11083
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
14
2005
50050-Flow,,,Flow
Recorder mgd
11488
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
15
2005
50050 -Flow ,Fl—
Recorder ngd
11388
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
16
2005
50050-Flow,,Flow
Recorder mgd
11206
DLWALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
17
2005
50050-Flow.,Flow
Recorder rtgd
11138
DLWALUE EFF 03-02-05

NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
18
2005
50050-Floa,n Flaw
Recorder mgd
11124
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carobna Person
Raleigh
003
1
19
2005
50050-Flow,.Flow
Recorder mgd
11166
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
20
2005
50050 -Flaw isFlow
Recorder mgd
11217
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
21
2005
50050 -Flow is Flow
Recorder mgd
1123
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
22
2005
50050 -Floe, is Flaw
Recorder mild
11196
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
23
2005
50050 -Flaw, Is Flow
Recorder mgd
11201
DLYVALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
24
2005
50050 -Flow ,.Flow
Recorder mgd
11193
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
25
2005
50050-Flow,.Row
Recorder mgd
11199
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
26
2005
50050 -Flaw, is Flaw
Recorder mgd
11154
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
27
2005
50050 -Flow hFlow
Recorder mgd
11122
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
28
2005
50050 -Flaw,,. Flaw
Recorder mgd
1110
DLYVALUE EFF 03-0205
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
1
29
2005
50050 -Flow, is Flow
Recorder mgd
11145
DLYVALUE EFF 03-0205
NCOD03425
200 Progress Energy Carohna Person
Raleigh
003
1
30
2005
50050 -Flow ..Flow
Recorder mgd
11211
DLYVALUE EFF 03-02-05
N00003425
200 Progress Energy Carolina Person
Raleigh
003
1
31
2005
50050 -Flow hFlow
Recorder mgd
1121
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
1
2005
50050 - Flow ., Flaw
Recorder mgd
11142
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
2
2005
50050 -Flaw ,.Flow
Recorder mgd
11107
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
3
2005
50050 -Flow, Is Flow
Retarder mgd
11092
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
4
200.5
50050 -Flown Flow
Recorder mgd
11136
DLYVALUE EFF 03-0205
N00003425
200 Progress Energy Carolina Person
Raleigh
003
2
5
2005
50050 -Flow, is Flaw
Recorder mgd
11133
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
6
2005
50050-Flow.,Flom
Recorder mgd
11117
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
7
2005
50050-Flow.,Flow
Recorder mgd
11104
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
8
2005
50050-FIow.,Flow
Recorder mgd
11086
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
9
2005
50050 - Flow, h Flow
Recorder mgd
11081
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
10
2005
50050 -Flow, h Flom
Recorder mgd
11077
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
11
2005
50050 - Flow, n Flo+
Recorder mgd
1106 9
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
12
2005
50050 - Flow,., Flow
Recorder mgd
11067
DLYVALUE EFF 03-02-05
N00003425
200 Progress Energy Carolina Person
Raleigh
003
2
13
2005
50050 -Flow., Flow
Recorder mgd
11067
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
14
2005
50050-Flow,n Flow
Recorder mgd
11069
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
15
2005
50050 -Flow isFlow
Recorder mgd
11081
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
16
2005
50050 -Flow, is Flory
Recorder mgd
11081
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
17
2005
50050 -Flow, h Flo+
Recorder mgd
11094
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Perron
Raleigh
003
2
18
2005
50050 -Flow isFlow
Recorder mgd
11085
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
19
2005
50050 -Flaw bRm
Recorder mgd
8588
DLYVALUE EFF 03-02-05
N00003425
200 Progress Energy Carolina Person
Raleigh
003
2
20
2005
50050 -Flow, li Flaw
Recorder mgd
859
DLYVALUE EFF 03--02-05
NCDO03425
200 Progress Energy Carolina Person
Raleigh
003
2
21
2005
50050 -Flaw 1, Flow
Recorder mgd
859
DLYVALUE EFF 03-02-05
NCrM03425
200 Progress Energy Carolina Person
Raleigh
003
2
22
2005
50050 -Flaw, h Flaw
Recorder .9d
11083
DLYVALUE EFF 0302-05
NC0003425
200 Progress Energy Cardura Person
Raleigh
003
2
23
2005
50050 -Flow isFlaw
Recorder rings!
11081
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Person
Raleigh
003
2
24
2005
50050 -Flow, II Flo+
Recorder mgd
11085
DLYVALUE EFF 03-02-05
NCDO03425
200 Progress Energy Carolina Person
Raleigh
003
2
25
2005
50050 -Flow Is Flaw
Recorder mgd
11094
DLYVALUE EFF 03-02-05
NC00D3425
200 Progress Energy Carolina Person
Raleigh
003
2
26
2005
5OD50- Flow Is Flow
Recorder mgd
11085
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carohna Person
Raleigh
003
2
27
2005
50050 -Flow, h Flay
Recorder mgd
11083
DLYVALUE EFF 03-02-05
NC0003425
200 Progress Energy Carolina Perron
Raleigh
003
2
28
2005
50050 -Flow ,Flow
Recorder mgd
11115
DLYVALUE EFF 03-02-05

14r
PERMIT NUMBER NC0003425
FACILITY NAME Progress Energy Carolinas Inc - Roxboro Steam Electric Power Plant
CITY Roxboro COUNTY Person
OUTFALL 003 EFFLUENT
PERIOD ENDING MONTH 3 - 2005
REGION Raleigh
DMR 12 Month Calculated
PAGE 7 OF16
00010
00400
00600
00665
01002
50050
50060
50064
deg c
su
mg/l
mg/l
ug/l
mgd
ug/l
mg/l
Temperature,
pH
Nitrogen,
Phosphorus,
Arsenic, Total
Flow, in conduit
Chlorine,
Chlorine, Free
Water Deg
Total (as N)
Total (as P)
(as As)
or thru
Total Residual
Available
Centigrade
treatment plant
4-04
26 266667
75 - 7 7
068
0
0
894 643333
5-04
32.806452
74 - 7 7
04
0
0
1,045 587097
6-04
358
75 - 7 7
083
0
0
1,070 486667
7-04
38.096774
73 - 7 6
044
0
2
1,057 987097
8-04
36 483871
7.2 - 78
027
0.11
0
1,1067
9-04
328
74 - 7 8
044
0
0
1,105 983333
10-04
30 806452
72 - 7 5
048
0
0
1,064 990323
11-04
28.533333
74 - 7 4
043
0
0
939.583333
12-04
21 225806
73 - 7.6
054
0
0
1,077 670968
1 -05
23.193548
7.3 - 74
04
0
0
1,103 83871
2-05
21 814815
72 - 7 5
048
0
0
1,082 435714
3-05

l�
Progress Energy
File No.:12520B-01
t 05'
March 30, 2005
��� .
Mr David Goodrich
North Carolina Department of Environment and Natural Resources
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617 ca�
Subject- Progress Energy Carolinas, Inc (PEC)
Roxboro Steam Electric Plant
NPDES Permit No NC0003425
NPDES Permit Modification - Flue Gas Desulfurization Wastewater
Dear Mr. Goodrich
Progress Energy is planning on installing Flue Gas Desulfurization (FGD) systems at several of
our coal-fired plants in North Carolina in response to the North Carolina Clean Air Initiative.
Roxboro Steam Electric Plant will be the second Progress Energy facility to install the FGD
system with o ep ration of the system on Unit 2 projected to begin in the second _quarter_of 2007.
FDG systems on the remaining three units will begin operation every 6 months for the following
18 months The FGD system removes SO2 by mixing the flue gas with a limestone slurry
producing gypsum With this FGD operation a new wastewater stream will be produced.
Blowdown from the FGD system will be dischargedinto a -gypsum settling pond where the solid
will be removed Discharge from the settling pond will be pumped to a bio er ac�r which utilizes
microbes to reduce soluble contaminants to insoluble forms that then precipitate from solution
The bioreactors are designed with flushing capabilities for the periodic removal and recovery of
collected contaminants The discharge from the bioreactors will enter the ash pond discharge
canal and discharge via Outfall 002 to the Heated Water Discharge Canal. The Heated -Water
Discharge Canal ultimately discharges to Hyco Lake via Outfall 003 Enclosed is a table with
expected flow and concentrations of parameters in the wastewater stream prior to treatment by
the bioreactors. Because of the addition of the FGD blowdown, PEC is amending the NPDES
permit application to include this new wastewater stream According to our schedule we will
need a permit issued by September 30, 2005 Enclosed are revised Attachments 1, 2, and 3 of
the NPDES permit application and the permit modification fee of $860.00
As you are aware a pilot study using the bioreactor technology has been in progress at
Conemaugh Station In Pennsylvainia The pilot study was recently completed and a final report
outlining the results is expected soon This final report will be submitted to you by April 15,
2005
In addition, we request that the last paragraph on Part I, A (6) of the permit be revised to state.
"For the purposes of this permit, the term "Once per Discharge Event" shall mean the discharge 01<
from Outfall 002 that occurs within 30 minutes from the time the fl anted b_tt mish containing
metal waste is discharged into the ash pond plus the calculated detentionI�of the ash pond "
Progress Energy Carolinas, Inc
Roxboro Steam Plant LT r PS V1 r� I ` C' ���9 l
1700 Dunnaway Road ( 1r J C
Semora NC 27343

Additionally, Dustbloc 520W, a dust suppression chemical, has been replaced by Coaltrol 35 In
addition, a new coal unloading system has been constructed which requires the use of a second
dust suppression chemical, BT -210W, to meet the warranty of the coal conveyor system. The
MSDSs for both chemicals are enclosed and Attachment 3 has been amended to include both D
The stormwater runoff from the coal handling areas of the plant discharges to the foal pile
runoff pond whichdischarges via Outfall 006 to Hyco Lake. Because there is a toxicity
requirement for Outfall 006 it is our understanding that Biocide/Chemical Treatment Worksheets
are not needed for these chemicals. _ --�'— - – cnr r e di
If you have any questions regarding any information in this submittal please call Louise England
at [phone].
1 certify, under penalty of law, that this document and all attachments were prepared under my direction
or supervision in accordance with a system designed to assure that qualified personnel properly gather
and evaluate the information submitted. Based on my inquiry of the person or persons who manage the
system, or those persons directly responsible for gathering the information, the information submitted is,
to the best of my knowledge and belief, true, accurate, and complete 1 am aware that there are
significant penalties for submitting false information, including the possibility of fines and imprisonment for
knowing violations
Sincerely,
Cecil E. Rowland
Plant Manager – Roxboro Plant

Progress Energy Carolinas, Inc
Asheville Steam Electric Plant
FGD Blowdown Estimated Concentrations
The flowrate of the FGD blowdown will be approximately 1 92 MGD
Parameter
Estimated FGD Blowdown
Concentration (ppm)
Antimony
0 333
Arsenic
0 193
Barium
2 512
Beryllium
0188
Boron
0 608
Cadmium
0 019
Chloride
6,905 5
Chromium
0 095
Cobalt
0 021
Copper
0 375
Fluoride
120
Lead
0 101
Manganese
2204
Mercury
0 009
Molybdenum
9 413
Nickel
0 415
Selenium
1 279
Sulfate
2,441
Thallium
0 002
Vanadium
3 155
Zinc
1 609

'FUA,,- �% cow cecf
rr,e4cct'
Ism
�
r� s
C-4
�a
/ t-,rLc,r vt.-,j
�')v
N �(Ael
G
le" .iV��
Fill

Stormwater
Plant Process Plant Drainage Outfall 006'4A34 H co Lake
Streams System Coal Pile Runoff Treatment Basin N o.V y
F /t-c.L v v u
H .01!r
Alternate to
Domestic Sewage Discharge Canal
Treatment Low Volume Waste Treatment Plant "" """' >
(Oil/Water Collection Sump
A Water Treatment Separator)
Systems Hyco
Lake
13
p
� 19.z5
Flue Gas,
Unit 4 Cooking Unit 4 Cooking Ash Pond
To Atmosphere Ash Transport Ash Landfill Desulfurization
Water Tower D - System Drainage
Outfall 005 -FIaJ, A41
ca F.... .......... Stormwater
Maintenance Drain K ./7 M�1�
i
LL Unit 3 Cooking Unit 3 Cooling —� To Atmosphere Silo Unit 3 Cooling
Water Tower s� Wash Water Tower Pond J
E
Alternative modes G
Outfall 002
C Unit 1 & 2 2
Outfall 003-v�x
sqy Cooling WaterHyco Lake
Discharge Canal M /0-7
Stormwater Attachment 1
Form 2C - Item II A Flows,
Sources of Pollution, and
1998 Flow Data Treatment Technologies
Page 1 October 2001

Carolina Power & Light Company
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 1
Form 2C — Item II -A Flow, Sources of Pollution, and Treatment Technologies
Stream
Estimated Average Flow
Comments
A
4
Make-up water for Water Treatment Systems
B
505
Unit 3 Cooling Water Intake
C
592
Units 1 & 2 Cooling Water Intake
D
7
Unit 4 Cooling Tower Blowdown
E
505
Unit 3 Cooling Water discharge
F
17.3
Unit 4 Cooling Tower Intake
G
505
Unit 3 Cooling Water Discharge
H
0.015
Sewage Treatment Plant discharge
I
3
Low Volume discharge into Ash Pond
J
19.25
Ash transport into Ash Pond
K
0.17
Silo wash water
L aw
12 �
Ash Pond discharge into Discharge Canal
M
1075
Discharge Canal flow into Hyco Lake
N
04
Coal Pile Runoff Pond discharge to Hyco Lake
O
� )o4U all -�c-
1 9 1u�,�
�n ue Gas Desulfurization discharge
P
5 81 (maximum)
Intake to Flue Gas Desulfurization

Carolina Power & Light Company
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 2
Form 2C - Item II -B Flows, Sources of Pollution, and Treatment Technologies
The Roxboro Steam Electric Plant, located in Person County, North Carolina, consists of four coal
fired generating units with net dependable capacities of 385, 670, 707, and 700 MWe for units 1, 2, 3,
and 4 respectively All plant waste streams are routed directly or indirectly to the Hyco Reservoir.
Chemical constituents contained in these discharges will, in part, be representative of the naturally
occurring chemical quality and quantity of the intake water and will also have chemical constituents of
such quality associated with similar discharges for fossil generating facilities of this size, type, and in
this geographical location. Either all or part of the elements in the Periodic Table, either singularly or
in any combination, may from time to time be contained in the discharges. Each component of the
discharges is described below.
Outfall 003 - Discharge Canal
At the point that the discharge canal enters the Hyco Reservoir, it contains the flows from several waste
streams, including once -through cooling water, stormwater runoff, and the effluent from the ash pond,
which in turn receives and treats combined flows from the ash transport system, the low volume waste
system, the dry fly ash handling system, cooling tower blowdown, stormwater runoff, and drainage
from the ash landfill
Once -Through Cooling Water
Condenser Cooling Water (CCW) for units 1, 2, and 3 is drawn from the Hyco Reservoir via an
intake canal and discharges to the Hyco Reservoir via a discharge canal. Flows for units 1, 2,
and 3 are 249 MGD, 342 MGD, and 505 MGD respectively. Cooling is accomplished by
evaporation from the surface of Hyco Reservoir and mixing and convection with the reservoir
waters.
During the summer months, unit 3 CCW is routed through mechanical draft cooling towers
where most of the waste heat is removed by evaporation before the water is discharged to the
1

Carolina Power & Light Company
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
reservoir via the discharge canal along with the CCW of units 1 and 2. Additionally, once -
through cooling water is used as component closed cooling water, the flow of which is
combined with the CCW prior to introduction into the discharge canal.
Ash Pond Discharge
The ash pond receives ash transport water, low volume wastes, runoff from the ash landfill, dry
fly ash handling system wash water, blowdown from Unit 4 cooling tower, coal mill rejects and
pyrites, and sewage treatment plant effluent The pond provides treatment by sedimentation,
oxidation, neutralization, equalization, and adsorption.
Ash Transport Water
Water for sluicing ash to the ash pond is withdrawn from the CCW system as needed.
The plant will primarily supply ash sluice water from Unit 2 However, the facility will
continue to maintain the ability to operate the unit 4 ash sluice pumps. The Unit 4 ash
sluice pumps are and will continue to be utilized for the following i) during maintenance
draining of the cooling tower, n) back-up supply for the fire suppressant system, and ill)
ash sluicing pumps during operational events which require additional pumping.
Normally, only bottom ash is conveyed to the ash pond by sluicing: fly ash is handled
dry by a pneumatic system and is landfilled on site or sold. If the dry fly ash handling
system is out of service dunng plant operating periods, fly ash will be sent to the ash
pond via the ash sluicing systems until the dry system is restored. Such occurrences are
expected to be infrequent and brief.
Salo Wash Water
Ash silo wash water runoff and dust suppressant spray runoff from the dry fly ash
handling system are routed to the ash pond.
Low Volume Wastes
Boiler make-up water is withdrawn from the CCW system and filtered, softened, and
demineralizered for treatment Boiler water is treated with ammonia, hydrazine, and
2

Carolina Power & Light Company
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
occasionally sodium hydroxide. Boiler blowdown is sent to the ash pond via the low
volume wastes collection system (LVWS); these are special drains in the plant that flow
by gravity to collection sumps and are pumped to the ash pond. Ethylene glycol is used
for freeze protection of some equipment and may be discharged to the LVWS, as is
some molybdate waste from the closed cooling water system, during periods of
maintenance. The plant's demmeralizers are regenerated using sulfuric acid and sodium
hydroxide. When this equipment is rinsed, small amounts of these chemicals are
discharged to the low volume system via the neutralization basin. Essentially all plant
equipment, floor drains, water treatment filter backwashes, clarifier and sedimentation
basin sludge, and ash hopper seal water overflow also discharge to the LVWS. In
addition, a back-up domestic sewage system can discharge to the LVWS. The back-up
system consists of a septic tank with a subsurface sand filter and a chlorine dosing
chamber. The back-up system can be used if the facility's extended aeration treatment
system is temporarily out of service.
Cooling Tower Blowdown
Unit 4 is the only unit that would produce cooling tower blowdown. Blowdown to the
ash pond may be required to keep concentrations of total dissolved solids to within
proper operating limits.
Domestic Sewage
Domestic sewage is treated by an extended aeration treatment plant consisting of a
screen, comminutor, surge tank, aeration tank, clarifier, chlorine contact chamber, and a
sludge holding tank
Coal Pale Runoff
The solids settling basin, which contains a portion of the wastewater runoff from the
coal pile and other coal handling areas of the plant, is routed to the ash pond
R

Carolina Power & Light Company
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Ash Landfill Drainage
Water for sluicing a mimmum amount of bottom ash to the ash landfill is withdrawn
from the ash transport system as needed. The bottom ash is used to enhance the
subsurface drainage of the landfill.
Stormwater Runoff
The stormwater runoff, which flows into the ash pond includes runoff from the plant
drainage area, landfill runoff (including silo area drainage), and the drainage area from
the ash pond (including roadways).
Stormwater Runoff
The stormwater, which flows into the discharge canal includes runoff from the plant drainage
area, the drainage area from the dry flyash handling system (including roadways), Unit 4
cooling tower drainage area, the fuel oil storage containment area, the switchyard drainage area,
and the anhydrous ammonia tank farm.
Flue Gas Desulfurization Blowdown (Low Volume Waste)
The Flue Gas Desulfurization (FGD) system directs flue gas into an absorber where a limestone
(calcium carbonate) slurry is sprayed. Sulfur dioxide in the flue gas reacts with the limestone
slurry to produce calcium sulfate (gypsum). The system reclaims any unreacted limestone
slurry to be reused in the absorber. A small blowdown stream is used to maintain the chloride
concentration in the reaction tank. The blowdown stream will be discharged to a gypsum
settling pond where suspended solids will be reduced prior to entering a bioreactor The
bioreactor utilizes microbes to reduce soluble contaminants to insoluble forms that then
precipitate from solution. The treated wastewater will enter the ash pond discharge canal prior
to outfall 002.
.19

Carolina Power & Light Company
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Outfall 006 — Coal Pile Runoff
Wastewater runoff from the coal pile, limestone pile, and gypsum pile and other coal handling areas of
the plant is routed to a retention pond for treatment by neutralization, sedimentation, and equalization.
The pond is designed to store in excess of the 10-year/24-hour storm event. Releases are controlled by
a standpipe and skimmer discharge structure.

Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Attachment 3
Form 2C - Item VI Potential Discharges Not Covered By Analysis
Chemical Quantity Frequency Purpose
(used per year)
Anhydrous Ammonia
14,000 gal/wk
per unit
As required
(Seasonal)
Flue Gas Conditioning
Betz Powerline 3200
385 gallons
As required
Corrosion Inhibitor
Betz Polymer 1120P
250 lbs
As required
Water Treatment
Betz 3625 Biocide
2300 gallons
As required
Unit 4 Cooling Tower
Algae Control
Betz Foam Trol
630 gallons
As required
Unit 4 Cooling Tower
Foam Control
Betz 500P
110 gallons
Twice per day
Corrosion Inhibitor
Potable Water
Ice Free Conveyor
(Propylene glycol)
750 gallons
2100 lbs
As required
Conveyer Belt Freeze
Protection
Aluminum Sulfate
4000 gallons
As required
Water Treatment
Sodium Chloride
100,000 lbs
As required
Softener Regeneration
Sulfuric Acid
13,000 gallons
Twice per week
Demineralizer
Regeneration
Sodium Hydroxide
15,000 gallons
Twice per week
Demineralizer
Regeneration
Ethylene Glycol
6,000 gallons
As required
Freeze Protection Hot
Water Coil System
Lime
2,500 lbs
As required
Wastewater pH Control
Hydrazine
1,760 gallons
As required
Feedwater Oxygen
Ammonia Hydroxide
1,760 gallons
As required
Boiler Water pH
Control
Sodium Hydroxide
200 lbs
As required
Boiler Water pH
Control
Rev 10/04

Progress Energy Carolinas, Inc.
Roxboro Steam Electric Plant
National Pollutant Discharge Elimination System Permit Number NC0003425
Sodium Hypochlorite
400 gallons
Twice per day
Potable Water
Treatment
BT -210W
40,000 lbs
As required
Dust Suppressant
(estimated)
Coaltrol 35
40,000 lbs
As required
Dust Suppressant
Sodium Bicarbonate
10,000 lbs
As required
Wastewater pH Control
Caustic Soda (20%)
110 gallons
Twice per day
Potable Water pH
Control
Molten Sulfur
525,000 lbs
As required
Flue Gas Conditioning
Sanuril Tablets
135 lbs
As required
Biocide for Sewage
Treatment
Nalclean
200 lbs
As required
Softened Water
System
GEOMELT
87,000 gallons
Winter months
Anti -icing Fluid for Coal
per month
BT -930
87,000 gallons
Winter months
Anti -icing Fluid for Coal
per month
Limestone (calcium
492,000 tons
Continuous
Flue Gas
carbonate)
Desulfurization
Rev 10/04

Selenium Removal of FGD
Scrubber Slowdown at
Reliant Energy's Conemaugh
Station
ABMet@ Pilot -Scale Final
Prepared
Francis Caracappa
Parsons E&C
2675 Morgantown F
Reading, PA 19607
March 11, 2005
Prepared by:
MCA applied biosciences
Applied Biosciences Corporation
P.O. Box 520518
Salt Lake City, UT 84152
[phone]
www.applied-biosciences.com

TABLE OF CONTENTS
INTRODUCTION..................................................................................................1
SITEDESCRIPTION............................................................................................1
MATERIALAND METHODS................................................................................1
Laboratory Variable Testing..............................................................................1
OnsitePilot Testing...........................................................................................4
RESULTS AND DISCUSSION.............................................................................6
Laboratory Variable Testing..............................................................................6
OnsitePilot Testing.........................................................................................10
SolidsAccumulation........................................................................................12
CONCLUSIONS/RECOMMENDATIONS...........................................................14
APPENDIX A — SELENIUM SPECIATION RESULTS.......................................16
APPENDIX B — SELENIUM ANALYTICAL METHOD VALIDATION ................18
APPENDIX C — PILOT PLANT METAL REMOVAL DATA...............................26
APPENDIX D — ONSITE PILOT REACTOR LOG..............................................32
Table 1. Conemaugh Station Surge Tank Water Characteristics ..........................1
Table 2. Bench Scale Bioreactor Testing..............................................................2
Table 3. Baseline Results of Conemaugh Station Surge Tank Water, 10/14/04..6
Table 4. Matrix Absorption Control Results..........................................................7
Table 5. Onsite Pilot Testing Data......................................................................11
Table 6. Preliminary Recommended Full Scale Design Criteria ........................15
Figure 1. Conemaugh Station Pilot System Flow Schematic...............................5
Figure 2. Influent Variable Testing.......................................................................7
Figure 3. Biofilm Viability at Various Temperatures.............................................8
Figure 4. Selenium Reduction at Various Temperatures.....................................9
Figure 5. DBA Toxicity Testing............................................................................9
Figure 6. On -Site Pilot Test Summary Graph, Conemaugh Station...................10
Figure 8. Bioreactor Headspace Analysis..........................................................14

List of Acronyms
AB
Applied Biosciences
AE
Albion Environmental
EPA
Environmental Protection Agency
NIST
National Institute of Standards and Technology
TCEQ
Texas Commission on Environmental Quality
FGD
Flue Gas Desulfurization
IWT
Industrial Water Treatment
RO
Reverse Osmosis
RT
Retention Time
AF
Atomic Absorbance
CVAA
Cold Vapor Atomic Absorption Spectrophotometry
GFAAS
Graphite Furnace Atomic Absorption Spectrophotometry
HGAF
Hydride Generation Atomic Fluorescence
IC -ICP -MS
Ion Chromatography -Inductively Coupled Plasma -Mass
MSD
Spectrometry
ICP -DRC -MS
Ion Chromatography -Dynamic Reaction Cell -Mass Spectrometry
ICP-OES
Inductively Coupled Plasma -Optical Emission Spectrometry
AWRL
Ambient Water Reporting Limit
CRM
Certified Reference Material
MDL
Method Detection Limit
ML
Method Reporting Limit
MS
Matrix Spike
MSD
Matrix Spike Duplicate
PEL
Permissible Exposure Limit
QA/QC
Quality Assurance/ Quality Control
RPD
Relative Percent Differences
WQC
Water Quality Criteria
BOD
Biological Oxygen Demand
COD
Chemical Oxygen Demand
ORP
Oxidation/ Reduction Potential
TDS
Total Dissolved Solids
TSS
Total Suspended Solids
CFU Colony Forming Units (viable cell count)
gpm Gallons per minute
ppm, b, t parts per million (mg/L), billion (Ng/L), trillion (ng/L)
tons/mo tons per month
DBA Dibasic Acid
Se IV, VI Selenite, Selenate
SeCN- Selenocyanate

INTRODUCTION
Progress Energy and Duke Energy will be implementing Flue Gas Desulphurization
Scrubbers at some of their power plants The scrubbers will generate a blowdown
stream that must be treated for selenium before discharge from the plant Applied
Biosciences developed the ABMet® technology to biologically remove selenium from
wastewaters. Previous laboratory studies have validated the technology's ability to
reduce selenium in FGD waters. After completion of the laboratory studies, an onsite
pilot scale evaluation was proposed to demonstrate selenium and other metal removal at
a larger scale The accepted pilot test proposal became a point project between Duke
Energy, Progress Energy and Reliant Energy As Duke Energy and Progress Energy did
not have a FGD scrubber installed yet, Reliant Energy provided the Conemaugh Station
for the testing site The pilot test project consisted of two parts, laboratory testing that
evaluated process variables and the onsite pilot test that evaluated selenium reduction in
larger bioreactors. The following report discusses the pilot test project methods and
results
SITE DESCRIPTION
The Conemaugh Station treats 100 to 150 gpm of FGD blowdown from five Alstom
Absorbers serving two 850 MW CE boilers Dibasic Acid (DBA) is added to the
absorbers to increase their efficiency The blowdown flow rate from the scrubber is
controlled to maintain the absorber chloride level at 20,000 ppm Absorber blowdown is
collected in a 300,000 gallon Surge Tank next to the Industrial Water Treatment (IWT)
building The blowdown characteristics include
Table 1. Conemaugh Station Surge Tank Water Characteristics
Parameter
Concentration
Units
Chlorides
15,000 — 20,000
mg/L
Selenium
1 — 4
mg/L
TSS
200-800
mg/L
Temperature
125
Fahrenheit
H
55-63
Standard units
The onsite pilot testing system was set up in a temporary mobile building located next to
the IWT building and the surge tank The temporary building was approximately 20 feet
long, 8 feet wide, and 10 feet tall The building was equipped with heat and lighting
MATERIAL AND METHODS
Laboratory Variable Testin_g
Baseline Water Characterization:
Samples of water received at the Applied Biosciences laboratory from the Conemaugh
site were sent out for initial analysis of Cl, Sulfate, metals (Se, Hg, As, Be, B, Cu, Pb),
TSS and TDS to Midcontinent Laboratories in Rapid City, South Dakota. The bulk water
samples received were stored at 22°C (72°F) in closed containers. The water was also
tested at the Applied Biosciences laboratory for pH, reduction/oxidation potential, and
dissolved oxygen

The Dibasic Acid (DBA) concentration was determined by conducting a titration on the
site water using Method No. 940M, Determination of Buffer Capacity for Scrubber
Slurries by Titration, provided by the Conemaugh Station laboratory.
An indigenous microbial characterization was conducted by plating samples of the water
on tryptic soy agar plates and incubating at 30°C (86°F) for 48 hours. The Colony
Forming Units (CFU's) were enumerated using Standard Plate Count methods.
Culture Preparation:
An initial screening with 23 ABMet® selenium reducing organisms was performed on full
strength Conemaugh water as well as at a 50:50 dilution, (Conemaugh-RO water). A
consortia of six organisms were qualitatively identified as strong selenium reducers in
site water and subsequently scaled up to a minimum concentration of 1E 07 Colony
Forming Units/ml (CFU/ml) during late log phase for reactor inoculation.
Reactor Preparation and Maintenance:
Three liter bench reactor columns were filled with 3 liters of dry activated carbon (1400
g) following pretreatment with nutrients All reactors were filled with approximately 1.5
liters of inoculum and allowed to incubate for 60 hours in order to establish a mature
biofilm on the carbon matrix prior to the introduction of inlet feed water source. A total of
4 trains of bioreactors were set up and each train consisted of two inoculated columns
run in series. Each column was maintained at a 12 hour retention time, sampled daily
and monitored for pH, ORP, and selenium. Samples were filtered and preserved with
HNO3 prior to selenium analysis. Columns were supplemented daily with ABMet®
nutrient
The four reactor trains evaluated different process variables and their effects on
selenium reduction:
Table 2. Bench Scale Bioreactor Testing
Train Identification
Description
Variable
Train 1
100% Conemaugh water with no
High chloride (15,000 ppm)
diluents or additives.
Train 2
A 50:50 dilution of Conemaugh
pH
water with RO, adjusted to a pH of
7.5 and later to a pH of 8.0
Train 3
A 50.50 dilution of Conemaugh
Aerobic pretreatment to
water with RO, pretreated in a
remove DBA
bench -top aerobic fluidized bed
reactor.
Train 4
A 50:50 dilution of Conemaugh
Medium chloride (7,500
water with RO.
ppm)
Each bioreactor train had its' own inlet feed water source. The inlet feed waters were
prepared by siphoning water from the tote of site water and adjusting for the appropriate
variable (i.e. diluting with RO water, pH adjusting, etc). The prepared inlet feed waters
were sent out for selenium analysis on a weekly basis
2

The inlet feed water for Train 3 was generated by a bench -top aerobic fluidized bed
reactor. The purpose of the aerobic pretreatment was to determine if oxidizing the DBA
would benefit selenium removal in the ABMet® system. A 50/50 mix of Conemaugh
water to RO water was prepared and fed to the aerobic reactor Treated water was then
used as the feed water for Train 3.
Temperature Viability:
A separate reactor was designed to test the viability of the microbial consortia as well as
selenium reduction at temperatures ranging from 90°F to 115°F. This reactor consisted
of a single inoculated micro -column submerged in a heated bath. Influent water (50:50,
Conemaugh.RO) was recycled through the bath at a 15 minute retention time. The
column was run at each temperature for 24 hours with samples taken at hours 0, 4, 8,
and 24. Samples were analyzed for selenium reduction and biofilm health and viability
Extended temperature testing was performed at 105°F, 110°F, and 115°F. The column
was run for three days at each temperature and analyzed for selenium reduction and
biofilm viability. Biofilm viability was determined by plating samples of the carbon
biomatrix that were removed from the micro -column daily.
Dibasic Acid Toxicity (DBA) Testing:
Selenium cultures on carbon were exposed to varying DBA concentrations to assess
toxicity. Cultures were allowed to grow and form a biofilm on activated carbon for 24
hours at 30°C (860F). An initial plate count was performed on the biomatrix and then the
carbon cultures were exposed to water and nutrient containing DBA at the following
concentrations 500, 1000, 1500, and 2000 mg/L DBA. A fifth carbon culture was given
only media without DBA to serve as a control. The cultures were incubated again at
30°C (86°F) and plated at hour 24, 48, and 72. Plate counts were analyzed to determine
effects of exposure to DBA.
Absorption Control Column:
A sixth reactor consisting of a single un -inoculated column designed to test the
adsorption potential of the carbon matrix with various metals, (Se, As, Pb, Cd, Cr, Cu,
Fe, Mn, and Ni) The column along with the influent water was refrigerated at 4°C to
inhibit the growth of any indigenous organisms. 100% Conemaugh water was pumped
through the column at a 4 hour retention time and sampled three times daily Effluent
samples were analyzed for metal concentrations and a breakthrough point was
determined for each. Breakthrough was determined when the effluent value reached
50% of the initial value for each constituent.
Selenium Speciation:
A sample of Conemaugh site water and samples of bench reactor effluents were sent to
Frontier Geosciences laboratory in Seattle, Washington for selenium speciation.
Additionally, Conemaugh site personnel sent two samples from before and after their
aerobic biological treatment system. All samples were collected, frozen overnight, and
sent to Frontier Geosciences Once at the laboratory, the samples were thawed and
filtered using a 0 2 micron filter and analyzed for dissolved SeCN-, Se(IV), and Se(VI)
using the ion chromatography -inductively coupled plasma -mass spectrometry (IC -ICP -
MS) method.
Samples were also analyzed for organic selenium concentrations using a method
developed by Frontier Geosciences The method evaluates organic selenium species by
running the sample over a C-18 column to remove any uncharged organic Se
3

compounds. The samples that passed through the columns and original samples not
run through the columns were then analyzed for total selenium using the Inductively
Coupled Plasma -Dynamic Reaction Cell -Mass Spectrophotometer (ICP -DRC -MS)
method. The difference between the analytical results determined the concentration of
organic selenium compounds. See Appendix A for selenium speciation results.
Metals Analytical Methods:
Initially, Midcontinent Laboratories in Rapid City, South Dakota was used for all metals
analysis using the ICP -MS method 200.8 However, once analysis of confirmation
samples were received from another laboratory (Frontier Geosciences), it became
apparent that the Midcontinent method was subject to matrix interferences, presumably
due to the high chloride or bromide, and possibly the organic content in the Conemaugh
water. This creates a high bias with the values, and inflated results at the lower
selenium levels. The matrix interference can be eliminated using either the ICP -DRC -
MS method or Hydride Generation Atomic Fluorescence (HGAF) method Frontier
Geosciences employs both of these methods, and was utilized for all metals analysis on
the project from 12/17/04 forward. A third laboratory (Albion Environmental, College
Park) was contracted for a validation of these 2 methods using a sample set from 12/22.
Results from this study and more information on these methods can be found in
Appendix B.
Microbial Concentration Monitoring:
Carbon samples were plated for comparison of the Se reducing population to the total
microbial population present in the biomatrix Initial counts were made on the bench
scale reactors to confirm a Se reducing culture was present and dominant in the
biomatrix to begin testing. Periodic sampling of the pilot scale reactor was also done to
monitor the Se reducing population One gram of carbon, taken from various sites within
the reactor was pulverized and the appropriate dilutions were plated for Se reducing and
total counts on general media containing selenate. Se reducers were identified by visual
confirmation of Se precipitate in and around the resulting colony forming units.
Onsite Pilot Testin_g
A temporary mobile building located next to the IWT building at the Conemaugh site
housed the pilot testing system. The pilot testing system consisted of two 300 gallon
ABMet® bioreactors and automated nutrient delivery systems The dimensions of the
bioreactors were 3.5 feet in diameter and approximately 5 feet in height. The ABMet®
bioreactors contain a fixed biofilm supported on a bed of granular activated carbon.
Influent water flowed up through the biofilm bed by means of a false floor located 6
inches from the bottom of the tank The false floor was tapped with 15 1 -inch diameter
holes and equipped with nozzles that distributed the flow throughout the biofilm bed.
Water collected in a 2 -inch diameter weir pipe at the top of the bioreactor and overflowed
to an intermediate tank. A variable speed gear pump moved water from the intermediate
tank to the bottom of the second bioreactor. The effluent of bioreactor 2 collected in a 2 -
inch diameter weir pipe at the top of the bioreactor and overflowed to a floor drain back
in the IWT building. See the flow diagram in Figure 1.
4

------------•---i To IwT
I I Bul.ding
i
Nutrient
Storage
Dry" Inline ABMet Interim Inline ABMet Mixer Cell 1 pun Mixer Cott 2
Se Reduction Tank ether Metals
Reducton
Total Indluent
Flow OA gpn to
1 gpm
Nutrient
From Storage
Surge
tank Drum
5O Gallon Drum In
�f\ INT Bu Iding
City Vatter Flavt
0 to 02 gpn
Figure 1. Conemaugh Station Pilot System Flow Schematic
The bioreactors were fed the ABMetO nutrient using an automated delivery system. The
automated delivery system consisted of a chemical metering pump, timer and inline
mixer. Each bioreactor had its own delivery system and was fed three times per day
Influent flow rate was adjusted by varying the speed of the motor of the gear pump
Dilution water (city water) was adjusted by throttling a needle valve on city water line in
the IWT building
The influent and effluent of each bioreactor were sampled three times per week,
preserved with nitric acid, and analyzed for total selenium Once per week, the influent
and effluent of each bioreactor were sampled, preserved with nitric acid and analyzed for
other total metals including antimony, barium, molybdenum, silver, thallium, vanadium,
zinc, mercury, cadmium, arsenic, beryllium, copper, lead, boron, iron, manganese,
cobalt, chromium, and nickel Additionally, unpreserved samples taken weekly at the
influent and final effluent were analyzed for BOD, COD, fluoride, and sulfate See
Appendix C for metals analytical data
Conemaugh site personnel maintained a daily log of operating parameters including pH,
temperature, reduction/oxidation potential, and flow rate See Appendix D for pilot test
log.
Headspace Gas Analysis:
To determine hydrogen sulfide generation, the headspace air above the carbon matrix
was cleared until the H2S concentration read zero Hydrogen sulfide generation was
determined by measuring gas recharge of the headspace over time Hydrogen sulfide
concentration was measured by using a hand held digital H2S meter (GasAlertTm
Extreme Single -Gas Detector, Cole Parmer C-81991-13) Field reactors were monitored
for volatile mercury using a Sensidyne Gas Sampling Pump and Gas Detection Tubes
with a mercury concentration range of 0 5 mg/m3 to 10 mg/m3
5

RESULTS AND DISCUSSION
Laboratory Variable Testin_g
Baseline Characterization:
Two 200 gallon totes of Surge Tank water from the Conemaugh Station were received
at Applied Biosciences on October 14, 2004 A sample of the water was sent to
Midcontinent Laboratories in Rapid City, South Dakota for baseline characterization.
The results are seen in Table 3:
Table 3. Baseline Results of Conemaugh Station Surge Tank Water, 10/14/04
Parameter
Result
Unit
Method
Total Dissolved Solids
29,800
mg/L
EPA 160.1
Total Suspended Solids
125
mg/L
EPA 160 2
Chloride
15,000
mg/L
SM -4500 -CI B
Sulfate
1,760
m /L
EPA 375.2
Arsenic
0 058
mg/L
EPA 200 8
Beryllium
<0.010
mg/L
EPA 200 8
Boron
343
mg/L
EPA 200.7
Copper
0 697
mg/L
EPA 200.7
Lead
<0.010
m /L
EPA 200.8
Mercury
00009
mg/L
EPA 245 1
Selenium
238
mg/L
EPA 200.8
The pH of the water was 6.45 and the redox was 201 mV. The DBA concentration of
100% Conemaugh water was determined to be 500 ppm. The indigenous microbial
concentration present in Conemaugh water was 2 5 E+05 CFU/ml
Reactor Testing:
Column testing results are displayed below in Figure 2. Results showed that selenium
reduction occurred both in straight Conemaugh water (15,000 ppm Cl) and
Conemaugh water diluted 50/50 with reverse osmosis water (7500 ppm Cl) Selenium
reduction was not significantly affected by the higher chloride levels Additionally, 50/50
water adjusted for pH to 7.5 did not significantly affect removal efficiency One
bioreactor train evaluated selenium removal of water pretreated for DBA in a bench
scale aerobic bioreactor. The results indicated that percent selenium reduction was
unaffected by the presence of DBA.
L

100%
90%
c
80%
U
3
70%
E
60%
50%
O
40%
30% -
0
Results for Variable Testing, Salt Lake City
5
10 15
®ay
20
--O---Train 1 100-m Site
Water �
/ —O—Train 2 50% pH
adjusted to 7 5 j
1 ,
Train 3 50% plus
aerobic pretreatment
Train 4 50% Native
pH
I
25 30
Figure 2. Influent Variable Testing. Influent variables were tested in Applied
Biosciences' laboratory in Salt Lake City using bench scale bioreactors. This testing
allows for a comparison of treatment efficacy using 900% site water, diluted site water to
reduce Cl, pH adjusted site water, and site water without pH adjustment.
Matrix Absorption Control:
Table 4. Matrix Absorption Control Results
A matrix absorption control column was set up
Parameter
Retention Volume to
Breakthrough
Arsenic
1
Cadmium
> 25
Chromium
1
Copper
> 25
Iron
8
Lead
Not Present
Manganese
12
Mercury
Not Present
Nickel
22
Selenium
14
using an un -inoculated carbon bed
Absorption to the matrix was evaluated by
noting how many retention volumes passed
through until breakthrough occurred. Previous
experiments demonstrate that selenium does
not absorb well to activated carbon.
Furthermore, with the high organic content in
the water, it was anticipated that native
microbes would colonize the column and result
in biological reduction to an unquantifiable
degree
The Pntire exnenment was performed in a
7

refrigerator maintained at 4°C (39°F) to impede microbial growth and biofilm
development Breakthrough was determined as a value of >50% of the initial value For
example, the control column was run at a 4 hour retention time iron broke through after
32 hours and arsenic broke through at 4 hours. The concentrations of lead and mercury
were below detection limits in the feed waters. At the end of the experiment, the carbon
matrix was plated for microbial concentrations. The results revealed a population had
indeed colonized the carbon This will result in biological removal in addition to
absorption in this experiment, and may allow for the breakthrough retention volumes due
to absorption to be overstated
Temperature Viability:
Results from temperature testing (Figures 3 and 4) indicated that 24 hour spikes of
temperatures as high as 105°F are not detrimental to biofilm health or selenium
reduction Above 105°F, the selenium reducing population significantly declined. This
could be due to a population shift in the biofilm, or denaturing of specific proteins
responsible for selenium reduction Extended temperature testing (pending) will evaluate
longer term effects of high temperatures on selenium reduction and the biofilm health
1 DOE+09
1 00E+08
100E+07
U.
U.
1 00E+06
c
no 100E+05
Temperature Testing
2 1 00E+02
E
1.00E+01
1 00E+00
Starting 90°F 95°F 100°F 105°F 110°F 115°F
Counts
Total Counts ©Se Counts
Figure 3. Biofilm Viability at Various Temperatures
0

Figure 4. Selenium Reduction at Various Temperatures
DBA Toxicity Testing:
Results from DBA toxicity testing (Figure 5) indicated that the selenium reducing bacteria
maintained a normal growth curve at levels of DBA ranging from 500 to 2000 mg/L (as
compared to the non -DBA control). A standard influx of log growth was seen in the first
24 hours, followed by a stabilized stationary phase Additional testing revealed that DBA
was not significantly reduced in the anoxic ABMet® reactors, nor did it inhibit selenium
reduction.
DBA Toxicity Testing
b 1.00E+10
LL 1.00E+09
1.00E+08
ri
1.00E+07
V
1.00E+06
0 24 48 72
Hours
Figure 5. DBA Toxicity Testing
--# Control
--fes-- 500 ppm DBA
1000 ppm DBA
1500 ppm DBA
--*— 2000 ppm DBA
Selenium Speciation:
A sample of the Conemaugh site water was analyzed for inorganic and organic selenium
species at Frontier Geosciences. The results indicated that no selenocyanate (SeCN-)
was present, but that approximately 20% of total selenium concentrations in Conemaugh
water consist of organic selenium species Samples from laboratory bioreactor effluents
were also spectated and indicated that Se (VI) and Se (IV) are both reduced in the
ABMet@ bioreactors. See Appendix A for speciation results
E
Temperature Testing - Se Reduction
a)
60
50
— - -
E0
40
30
20
10
0
90°F 100T 105°F 110T
115'F
Temperature
Figure 4. Selenium Reduction at Various Temperatures
DBA Toxicity Testing:
Results from DBA toxicity testing (Figure 5) indicated that the selenium reducing bacteria
maintained a normal growth curve at levels of DBA ranging from 500 to 2000 mg/L (as
compared to the non -DBA control). A standard influx of log growth was seen in the first
24 hours, followed by a stabilized stationary phase Additional testing revealed that DBA
was not significantly reduced in the anoxic ABMet® reactors, nor did it inhibit selenium
reduction.
DBA Toxicity Testing
b 1.00E+10
LL 1.00E+09
1.00E+08
ri
1.00E+07
V
1.00E+06
0 24 48 72
Hours
Figure 5. DBA Toxicity Testing
--# Control
--fes-- 500 ppm DBA
1000 ppm DBA
1500 ppm DBA
--*— 2000 ppm DBA
Selenium Speciation:
A sample of the Conemaugh site water was analyzed for inorganic and organic selenium
species at Frontier Geosciences. The results indicated that no selenocyanate (SeCN-)
was present, but that approximately 20% of total selenium concentrations in Conemaugh
water consist of organic selenium species Samples from laboratory bioreactor effluents
were also spectated and indicated that Se (VI) and Se (IV) are both reduced in the
ABMet@ bioreactors. See Appendix A for speciation results
E

Onsite Pilot Testing
The pilot scale bioreactors were assembled and inoculated at the Applied Biosciences
laboratory in Salt Lake City The first bioreactor was inoculated with the selenium
reducing culture and shipped to the Conemaugh site via FEDEX Freight Applied
Biosciences personnel installed the bioreactor and supporting equipment at the
Conemaugh Station The selenium reducing bioreactor began treating water on
November 19, 2004 and Conemaugh personnel began collecting samples on November
22, 2004. The influent water from the surge tank was diluted 50/50 with city water and
pumped into the pilot test system at a rate of 0 4 gallons per minute At that flow rate,
the retention time through each bioreactor bed was 5 hours
Pilot Test Results, Conemaugh Station
1.400
1.200 —
1.000 {
0.800 -- i ='- Influent
3 0.600 -- — — —? B-1 Effluent
aci 0.400 — ---- — --�
0.200
0 000
\o tio ti \�\o tio �\�o\o �orh
Figure 6. On -Site Pilot Test Summary Graph, Conemaugh Station. Selenium
Reduction results for the first 2 months of data prior treating the unsp►ked Conemaugh
surge tank water.
Selenium concentrations can fluctuate daily at the Conemaugh Site due to variations in
coal type; however this fluctuation did not have a detrimental effect on the effluent
selenium values The results of the first 2 months of testing un -spiked surge tank water
are displayed in Figure 6.
The analytical laboratory was changed from Midcontinent to Frontier Geosciences on
December 17'h, 2004. Frontier Geosciences is a leader in the industry for low level
selenium analysis and the ICP -MS method (200 8) used at Midcontinent was susceptible
to interferences As noted in the Table 5 data, results from the more sensitive Frontier
Geosciences HGAF method are a magnitude lower than Midcontinent's results.
Bioreactor 2 was inoculated with a sulfate reducing culture and shipped to the site on
December 2, 2004 and began treating water from the first bioreactor on December 9,
10

2004 Bioreactor 2 effluent was monitored once a week for several metals and the
results are presented in Appendix C
On 1/24/05, a the system was spiked to simulate operations at a higher selenium level
A sodium selenate solution was prepared and metered Into the inlet feed line ahead of
the In-line mixer The target concentration was 4 mg/L The target value was overshot,
resulting in an Inlet feed concentration in the range of 5-6 mg/L On 2/10/05, analytical
data revealed a reduction in removal efficiency, prompting the need to flush the
accumulated solids out of the system. Solids were flushed as described below,
returning the reactor efficiency to 99+%
Table 5. Onsite Pilot Testing Data
Date
Influent
(mg/L)
Bioreactor 1
(mg/L)
Bioreactor 2
(mg/L)
Efficiency
Note
11/22/04
0 464
0 029
n/a
9375
ICP -Ms
Midcont
11/23/04
0 433
0 031
n/a
9284
11/24/04
0 181
0 023
n/a
8729
11/25/04
0.354
0 033
n/a
9068
11/26/04
0 423
0 035
n/a
91 73
11/27/04
0 567
0 033
n/a
9418
11/28/04
0 356
0 035
n/a
9017
11/29/04
0 335
0 026
n/a
9224
11/30/04
0 380
0.027
n/a
9289
12/1/04
0 570
0 026
n/a
9544
12/2/04
0.679
0 038
n/a
9440
12/4/04
0 454
0 031
n/a
9317
12/6/04
0 320
0.027
n/a
91 56
12/10/04
0 787
0.029
n/a
9632
12/13/04
0 811
0 042
n/a
9482
Install
Bioreactor 2
12/15/04
0 840
0 043
0 09
9417
12/17/04
0.580
0 004
0 003
9948
HGAF
Frontier Geo
12/20/04
0 434
0 007
0 004
9908
12/22/04
0 772
0.016
0 012
9845
12/24/04
1 240
0.009
0 008
9935
12/27/04
0 441
0 008
0.008
9819
12/30/04
0 957
0.0040
003
99.69
12/31/04
1 060
0 012
0 010
9910
1/12/05
0 797
0 009
0 007
9912
1/14/05
0 824
0.015
0 010
9880
1/17/05
0.525
0 013
0.009
9833
1/19/05
0 321
0.009
0 007
97.96
11

1/21/05
0 452
0.005
0.004
9909
1/24/05
0.304
0 005
0.004
9875
1/27/05
2160
1060
0.850
60.65
1/31/05
4.900
2.160
1.380
71.84
2/2/05
5.680
3 450
2 100
63.03
2/4/05
5.260
1.730
0.901
82.87
2/7/05
5.350
1.970
0.248
95.36
2/10/05
6.380
1 390
0 414
93.51
Flush
2/14/05
2.040
2.040
0.019
9909
2/16/05
3.380
0 528
0 007 1
99.78
2/18/05
4.454
0.188
0.006
9987
2/21/05
5.010
2 570
1 090
78.24
* Interpolated value
Solids Accumulation
The ABMet® bioreactor beds are operated at a low Hydraulic Loading Rate (< 0 5
gpm/ft2). At this low velocity, the beds exhibit a high degree of physical filtration. This
feature allows for fine precipitates (i.e. elemental selenium) to be retained within the bed.
However, the beds will also retain suspended solids present in the inlet feed.
Over the long term, accumulated solids will have an adverse effect on system
performance, a forward flush is required to remove these solids and return to steady-
state operating conditions. Accumulated solids, both as elemental selenium or retained
influent solids, will take up space in the reactor, and effectively limit the active bed
volume within the system. Flushing at a higher hydraulic loading rate of 10 gpm/ft2
allows for expansion of the bed, and allows the collected solids to wash out of the
system.
Throughout the pilot test grab samples of the surge tank water were collected by
Conemaugh personnel 5 x per week The surge tank water TSS averaged 266 mg/L,
and was subject to intermittent spikes due to upsets elsewhere in the plant. At this level
of inlet TSS, 1.2 pounds of suspended solids were being pumped into the reactor each
day (120 gallon void volume) over the 13 -week pilot program.
To remove the accumulated solids, the lead bioreactor bed was flushed on 2/10/05 at
approximately 10 gpm/ft2. Due to limitations with the pilot setup, the reactor could only
be flushed for several minutes at a time, for a total of approximately 20 minutes. This
resulted in a partial flush of the bed, effectively removing a substantial amount of
accumulated solids, but was not as effective as a complete flush would be in a full-scale
system. Because some solids were retained in the bed following the flushing process,
the system was still operating with a reduced effective bed volume; and subsequently, a
reduced retention time As indicated in the following weeks' samples, the selenium
reduction activity returned, resulting in removal to below 0.020 mg/L. Removal efficiency
dropped again on 2/21/05, indicating the need for solids removal from the system.
12

Flushing Frequency
Throughout the pilot test program, the system received a very high level of suspended
solids, and effectively acted as an up -flow media filter. While this level of inlet solids will
not be present at full scale, the pilot test program provided good data base from which to
predict the frequency of forward flushing required to maintain stable operation, and
demonstrated system robustness in regards to inlet TSS, as demonstrated by the
effective selenium reduction following the flushing event Based on this data, it is
anticipated that with an inlet TSS value of >250 mg/L the lead reactors will require
flushing on a at least a monthly basis. With an inlet TSS value of 20 mg/L or less (as
anticipated at full scale) the lead reactors will require flushing on a biannual basis. Full-
scale installations will have a pretreatment (i a clarification or settling pond) upstream
from the bioreactors
Pilot Test Selenium Summary, Conemaugh Station
7,000 120
6 000 100
5 000-
80
4000 solids flush 2/10/05
3 000
2,000 1- - - -
1
0000
i
+ o
-- -- _` --Influent
60 m Effluent
Effic,ency
40 w
1\ y ` 4, y`�11
,yryY1
20
Figure 7 - Selenium Removal Summary Graph, Conemaugh Station
A log of operating parameters can be found in Appendix D. During the testing, influent
temperatures ranged from 17 °C to 32.8 °C (62 6 °F to 91 °F).
Volatile Mercury:
Field reactors were monitored for volatile mercury using a Sensidyne Gas Sampling
Pump and Gas Detection Tubes with a mercury concentration range of 0 5 mg/m3 to 10
Mg/M3 No volatile mercury was detected in the headspace of the reactors Further
characterization of the bioreactor solids will commence at the end of the testing, and will
include mercury speciation. Analytical is underway at Frontier Geosciences.
Hydrogen Sulfide Headspace Analysis:
The recharge rate of hydrogen sulfide was tested on both bioreactor headspaces on
January 12, 2005. The recharge rate was determined to be 6 to 14 mg/m3 See Figure
8 below for a graphical display of the results.
13

100
90
a
80
70
c 60
50
c 40
30
0 20
U 10
0
Hydrogen Sulfide Testing Reactor 1
.. _ 1A wj.. 7 ][71
5 10 15 20 25 30 35
seconds
Figure 8. Bioreactor Headspace Analysis
90
.. 80
a 70
a
60
50
E 40
y 30
u
c 20
X10
0
Hydrogen Sulfide Testing Reactor 2
5 10 15 20 25 30 35 40 45 50 55
Seconds
Stagnant concentrations of hydrogen sulfide in the covered headspace of the reactors
measured as high as 100 ppm Hydrogen sulfide levels inside the temporary building
ranged from 0 to 8 ppm, below the OSHA PEL (10 ppm)
Nutrient Feed Rate:
The bioreactor feed rate began at 0 4 gallons of nutrient fed per 1000 gallons of water
treated per day For example, at an inlet feed rate of 0 4 gpm, 871 ml of nutrient was
delivered to each reactor per day Further site-specific optimization will be accomplished
at full scale
CONCLUSIONS/RECOMMENDATIONS
Successful laboratory and pilot scale testing of Conemaugh FGD water and other FGD
wastewaters indicate that Applied Biosciences ABMet® process is suitable for selenium
removal from these waters Laboratory studies evaluating process operating variables
demonstrated that the ABMetO technology can perform consistently over a range of
operational scenarios Specifically, selenium reduction was constant at native pH and a
pH adjusted to 7.5 Additionally, DBA was not toxic to the microbes and the presence of
DBA did not affect selenium reduction Finally, selenium reduction was evident in water
with chloride concentrations up to 15,000 ppm (the maximum concentration found in the
Conemaugh site water provided for testing) Temperature testing indicated that short
excursions to temperatures as high as 110°F were not detrimental to selenium reduction
or biofilm health
Effluent concentrations in the extended pilot scale testing exhibited selenium levels as
low as 0 003 mg/L at a retention time of 5 hours Influent temperatures to the pilot
system ranged from 17 °C to 32 8 °C (62 6 OF to 91 °F) Results from the temperature
testing in the lab demonstrated that selenium reduction and good biofilm health were
maintained at temperatures up to 105 OF.
14

In addition to selenium, the system demonstrated effective removal of Cr, Co, Ni, Cu, Zn,
As, Mo, Ag, Cd, Sb, Hg, TI, and Pb throughout the test period The system did not
demonstrate removal of Ba and Be Mercury was consistently removed in the system to
below 150 ng/L.
Hydrogen sulfide was produced in the pilot scale system. In confined areas such as the
headspace of a covered reactor, H2S concentrations can exceed occupational health
threshold standards. However, concentrations in the building remained below OSHA
Permissible Exposure Limits (10 ppm). It is concluded that covered cells in an outdoor
setting would limit odors and maintain ambient H2S concentrations below threshold
limits Offgas treatment can be implemented if needed.
Preliminary design criteria for full-scale implementation are displayed in the following
table. Both 4 and 8 hour RT examples are listed Full scale design RT will depend on
site specific treatment targets and inlet water chemistry.
Table 6. Preliminary Recommended Full Scale Design Criteria
Flow rate (gpm)
1600
640
150
System Retention time (hours)
4-8
4-8
4-8
Operating temperature (°F)
70-105
70-105
70-105
H (su)
55-9
55-9
55-9
Total Reactor Volume (gallons)
1 M — 2 M
0.4 M — 0.8 M
94 K — 188 K
Nutrient Consumption (tons/mo)
69-138
28-56
6-12
Pretreatment for the system may be required to remove TSS and reduce the solids
loading of the system It is anticipated that with an inlet feed TSS concentration of <20
mg/L, the lead reactors will need to be flushed on a biannual basis
Post treatment may be necessary to re -aerate water and remove residual organics
before discharge If DBA is present in the FGD water, it can be removed in the aerobic
post treatment system Post treatment may include fixed -film biological systems such as
rotating biocontactors and trickling filters, or wetlands
Site-specific proposals for individual clients are currently in preparation. This package
will include P&ID and GA Drawings, Process Guarantee Criteria, an Implementation
Plan, and a Full -Scale Cost Estimate
15

APPENDIX A - SELENIUM SPECIATION RESULTS
16

APPENDIX A. Selenium Speciation
Sample ID
Sample Description
Date
Total
Total
Organic
Description
Se
Inorganic
Fraction
Conemaugh
Conemaugh
10/14/04
(ppb)
Se (ppb)
(ppb)
Conemaugh
Conemaugh Water sent
11/30/04
1030
837
193
to AB for Lab Testing
SRC Outlet
From the site — Primary
11/30/04
601
485
116
Clarifier (after lime
addition and Na2S)
SBR Outlet
From the Site — Outlet of
11/30/04
448
338
110
SBR Outlet
aerobic biotreatment
11/16/04
143
28
<2 8
Aerobic
Laboratory Aerobic
11/30/04
582
501
81
Reactor
Bioreactor
Inorganic Selenium Speciation Results
Sample ID
Sample
Date
Dissolved
Dissolved
Dissolved
Description
Se IV (ppb)
Se VI (ppb)
SeCN (ppb)
Conemaugh
Conemaugh
10/14/04
196
324
<2 8
Water sent to AB
for Lab Testing
SRC Outlet
From the site —
10/26/04
174
192
52
Primary Clarifier
(after lime addition
and Na2S)
SBR Outlet
From the Site —
11/16/04
143
28
<2 8
Outlet of aerobic
biotreatment
Aerobic
Laboratory
11/16/04
339
7.1
<2.8
Reactor
Aerobic Bioreactor
Lab Effluent
100% Conemaugh
11/16/04
136
<3 9
<2 8
Train 1
Water
Lab Effluent
50% Conemaugh
11/16/04
253
<3 9
<2 8
Train 2
Water at Native
pH
Lab Effluent
50% Conemaugh
11/16/04
18.5
<3 9
<2 8
Train 3
Water pH adjusted
to75
Lab Effluent
50% Conemaugh
11/16/04
12.4
<3 9
<2 8
Train 4
Water Aerobically
Pretreated
17

APPENDIX B - SELENIUM ANALYTICAL METHOD
VALIDATION
18

Applied Biosciences Aqueous Selenium Method Validation
Study
Final Selenium Data for Samples Received 12-28-2004
Analytical Data Report Narrative
(Data Report G1231-9457-011)
Introduction
This report describes an aqueous selenium (Se) analytical method validation study performed
using samples provided by Applied Biosciences (AB) Selenium concentrations were determined in the
samples using two independent analytical methods The two methods used were dynamic reaction cell
inductively -coupled plasma mass spectrometry (DRC -ICP -MS) and hydride generation atomic fluorescence
(HGAF) Although not used in the collection of the samples used in this study, the low detection limit
methods used in this study benefit from the use of clean metals and mercury sampling and analysis
techniques The need for these methods grew out of the realization by the U S Environmental Protection
Agency (EPA) that much of the historical aqueous metals data were inaccurate due to contamination during
sampling and analysis or of very limited usability (i a mostly non -detects) because of the use of
insufficiently sensitive analytical techniques For example, over the last two decades, marine chemists
have come to recognize that much of the historical data on the concentrations of dissolved trace metals in
seawater are erroneously high because the concentrations reflect contamination from sampling and analysis
rather than ambient levels More recently, historical trace metals data collected from freshwater rivers and
streams have been shown to be similarly biased because of contamination during sampling and analysis
(Windom et al 199 1) Preventing surface and waste water samples from becoming contaminated during
the sampling and analytical process constitutes one of the greatest difficulties encountered in trace metals
determinations Clean metals techniques (i a also known as "clean hands -dirty hands") were formalized by
the EPA in the mid -1990's (see EPA method 1669) to provide procedures for accurately measuring trace
metals at the low concentrations typically found in ambient surface waters and treated wastewaters The
methods are designed to measure aqueous metals accurately and without contamination or analytical
artifacts at sufficiently low concentrations to be useful in evaluating compliance with ambient water quality
criteria Clean methods minimize the possibility of false positives or other artifacts that can introduce
errors and affect data accuracy or usability These methods are playing an increasingly important role in
water quality monitoring because many trace metals have low water quality criteria (WQC) that play a
central role in water quality based effluent limit regulation For example, under the Great Lakes Initiative,
the water quality criteria for mercury (Hg) is set as 0 0013 parts per billion Also the Texas Commission on
Environmental Quality (TCEQ) has established ambient water reporting limits (AWRL's) for freshwater
that require several metals (i e Ag, Cd, Cu, Hg, Pb) to be accurately measured at or well below the one part
per billion (ppb) level The AWRL's were set at these low levels because accurate, aqueous trace metals
data at such low concentrations are needed to perform technically defensible mandated water quality
assessments (e g 305b) The EPA recognizes that clean metals methodology is the only approach capable
of making accurate measurements of metals in surface waters and treated waste waters at these low WQC
levels This approach minimizes the possibility of false positives (i a overestimates of the true
concentration) that can result in erroneous water quality assessments or other Clean Water Act regulatory
decisions
The clean metals approach consists of two components (1) clean sample collection techniques
(EPA method 1669) and (2) clean analysis methods (e g EPA methods 1631E, 163 8) An over -arching
quality assurance/ quality control system of various types of blanks verifies the lack of contamination at
every step of the process from equipment preparation in the laboratory to sample collection in the field and
finally to analysis of samples back in the laboratory Low detection limits require very low (i e mostly
non-detectable) blanks at every step in the process Certain elements, such as aluminum, copper and zinc
which are so ubiquitous in the environment, commonly pose the greatest risk for sample contamination
both in the field and the laboratory Also, since the EPA's new Hg method 1631 E has a detection limit of
0 0002 ppb, the possibility of contaminating Hg samples cannot be overestimated Clean sampling
involves the use of rigorously pre -cleaned and certified (via equipment blanks) equipment in combination
with field procedures aimed at minimizing the chance of external contaminants getting into the pre -cleaned
19

sample collection system Real time, onsite filtration for dissolved metals within 15 minutes of collection is
required (EPA 2004) Clean analysis continues the use of pre -cleaned equipment and contamination
avoidance procedures Equally important, clean techniques require the use of low detection limit methods
(i e typically at least one tenth of the associated WQC) such as inductively coupled plasma -mass
spectrometry (ICP -MS) and atomic fluorescence (AF) that are capable of making accurate measurements at
even low ambient metal concentrations Such highly sensitive analytical methods provide the lowest
detection limits currently achievable and thereby provide actual concentration data for most of the elements
of interest (i a minimize the number of non -detects) Trying to push less sensitive analytical methods (e g
ICP-OES, GFAAS, CVAA) beyond their realistic detection limits can lead to artifacts such as false
positives, excessive variability, the potential need for blank corrections, etc
About Albion Environmental
Albion Environmental (AE) is one of the most experienced clean metals and mercury laboratories in
the country Dr Paul Boothe, AE's senior scientist, is a nationally recognized expert on the application of
clean methods to Clean Water Act regulations for both fresh and salt waters Dr Boothe has worked closely
with the EPA Office of Water in the development and implementation of the 1600 series clean metals and Hg
methods He has participated in several of the method validation studies (e g methods 1638/200 8 and 245 7)
and has provided detailed technical reviews during the development of many of the draft methods AE (or Dr
Boothe) is acknowledged by name as a significant contributor to several of the EPA 1600 clean methods
including the latest revision of EPA Method 1631 (revision E) approved for use under the Clean Water Act in
November 2002 AE regularly participates in the semi-annual blind intercalibration exercise conducted by the
U S Geological Survey This is the only national intercalibration study that uses natural water samples with
metal levels near ambient water quality criteria levels AE is consistently among the top rated laboratories in
this exercise
Background
As part of their research and development into technologies for the removal of Se and other
inorganic contaminants from water, AB has a need for the accurate, low detection limit determination of
trace metals in often analytically challenging aqueous matrices including high total dissolved solids (TDS)
samples Such saltwater -like matrices represent an extreme analytical challenge because of the often low
metal concentrations present combined with the usually severe analytical interferences to direct analytical
techniques (e g ICP optical emission or mass spectrometry, graphite furnace atomic absorption
spectrophotometry, etc ) caused by the high TDS (salt) content of the samples There is universal
agreement in the oceanographic research community that special analytical techniques are needed to
accurately measure trace metals in saltwater Although specific approaches may vary, these specialized
techniques generally have the goal of extracting the trace metals from the interfering salt matrix to permit
accurate, interference -free measurements to be made Two independent analytical methods were used for
this study In the HGAF method, volatile Se hydrides are formed, removed from the sample matrix by a
gas-liquid separator and introduced into a highly sensitive atomic fluorescence detector Normal solution
mode ICP -MS is prone to isobaric, molecular -ion interferences exacerbated by the "excess salts" in
elevated TDS samples Such isobaric interferences are typically additive resulting in an overestimation of
the true concentration of the element of interest High TDS samples can be diluted to approximately 1,000-
3,000 ppm TDS prior to analysis to minimize any viscosity or other effects However, because the ratio of
element to interfering salts is not changed by dilution, the isobaric interferences, which typically are most
pronounced at masses < 100, usually cannot be controlled in normal solution mode ICP -MS For elements
affected by interferences, the effective detection limit is raised and the true concentration can easily be
overestimated In the DRC -ICP -MS method, samples are diluted prior to analysis and the DRC is used to
selectively remove interfering polyatomic, isobaric species from the ion beam using controlled ion -
molecule chemistry Chemically scrubbing the interferences from the beam before they enter the
quadrupole mass spectrometer results in a significant improvement in detection limits, especially for
difficult elements like Fe, Ca, K, Cr, As, V, and Se Each sample provided by AB was analyzed by both
HGAF and DRC -ICP -MS This approach provides confirming analyses to determine the true Se
concentration in each sample and also provides a basis for evaluating which analytical method is most
appropriate for future Se analyses of the sample matrices provided The comprehensive data report format
20

used here is designed to be self validating by providing complete, detailed QA/QC data (required for clean
metals and mercury method compliance) in addition to actual field sample data
Sample Collection
One bottle (field) blank and five test samples were received on 28 December 2004 in sponsor provided
250 ml HDPE bottles The samples had been preserved with nitric acid by AB to a pH of <2 The pH of each
sample was confirmed by AE to be < 2 The samples were then heated for — 10 hours at 75 deg C to insure
any Se adsorbed to container walls or suspended matter was released into solution
EPA clean sampling method 1669 and 1600 series clean analytical methods require that equipment and
field quality assurance (QA) / quality control (QC) samples be collected to confirm that sample collection and
processing was conducted consistently and without contamination Although clean metals methods were not
strictly used for sample collection in this study, the required QA/QC samples are described here because it may
be decided that future sample collection efforts would benefit from the use these procedures The blank sample
provided may be considered as generally equivalent to both a bottle blank and a field blank for this study
Because of the grab sampling approach used, no sampler blank is required by EPA guidance It did not appear
that any field duplicate samples were provided Descriptions of the required clean metals QA/QC samples are
given below including the a priori acceptance criteria
Bottle Blank (Contamination check in laboratory prior to field sampling)
a Description In the laboratory, analyte -free reagent water is placed in a pre -cleaned
sample bottle from the same cleaning lot as the bottles used to collect the unknown field
samples The bottle blank is acidified (preserved), allowed to stand a minimum of 24 hours
and analyzed in exactly the same manner as unknown samples The analysis is completed
prior to shipping any bottles from that cleaning batch to the field
b Purpose To confirm that the pre -cleaned bottles used for sample collection are
contamination -free and not adding detectable amounts of the elements of interest to the
unknown samples during sample storage prior to analysis
C Frequency A minimum of 3-5% per cleaning batch
d Acceptance Criterion < Method Reporting Limit (ML)
Sampler Blank (Contamination check in laboratory prior to field sampling)
a Description In the laboratory, analyte -free blank water is processed through a sample
collection configuration (i a syringe and filter or pump tubing set and capsule filter, etc )
from the same cleaning lot(s) as those used to collect the unknown field samples The
sampler blank is stored in a pre -cleaned sample bottle, acidified (preserved) and analyzed in
exactly the same manner as unknown samples The analysis is completed prior to shipping
any sampling configurations from that cleaning batch to the field
b Purpose To confirm that the sampling configurations used for sample collection are
contamination -free and not adding detectable amounts of the elements of interest to the
unknown samples during sample collection
c Frequency A minimum of 3-5% per cleaning batch
d Acceptance Criterion < ML
Field Blank (Contamination check in field)
a Description Analyte -free blank water is processed in the field using the same equipment
and procedures and under the same conditions as normal sample collection Field blanks
are collected first before any sample collection activities If total recoverable and
dissolved samples are to be taken, both a total recoverable (sampling configuration without
a filter) and a dissolved (configuration plus a filter) field blank are taken A trip blank is
similar to afield blank except the trip blank bottle is never opened in the field For this
study, filtration was done in the field No trip blanks were used for this study
b Purpose To confirm that the sampling configuration used in the field is free of
contamination prior to any unknown samples being collected (i a not adding detectable
amounts of the elements of interest to the unknown samples)
21

c Frequency A minimum of one per batch of 10 samples
d Acceptance Criterion < ML or < 20% of the lowest unknown samples whichever is
greater
Field Duplicate (Precision check in field)
a Description Two separate aliquots of the same sample are collected in rapid succession
in the field and placed in separate pre -cleaned sample bottles
b Purpose To assess the precision of the field sampling and analytical processes
c Frequency A minimum of one per batch of 10 samples
d Acceptance Criterion None However, proper clean sampling techniques
and a well -mixed water body should yield relative percent differences (RPD) between field
duplicates of < 20% at 10 times the MDL
e Formula RPD =(((absolute value (cone of first aliquot=C1) - (cone of second
aliquot=C2))* 100) / ((Cl + C2)/2))
Sample Preparation
HGAF• Preserved samples were sub-aliquoted from the original sponsor sample bottles and
prepared in 4M hydrochloric acid A 2 % potassium persulfate solution was added to each sample at the
rate of 1 ml for each 48 ml of acidified sample Samples were then digested by heating for at least 90
minutes at 95 degree C , and then allowed to cool prior to analysis
DRC -ICP -MS: After preservation and heating, no further processing was performed prior to
analysis by EPA method 1638 (modified)
Sample Analysis
Total recoverable Se was determined by HGAF according to EPA method 1632 modified for
continuous flow infection atomic fluorescence analysis of Se after a potassium persulfate digestion
Samples were also analyzed by EPA method 1638 modified for DRC -ICP -MS Ammonia was used as the
DRC cell gas and Se mass 78 was used for quantification with Se mass 82 used for confirmation A
complete suite of laboratory QA/QC samples was run by both methods with the field samples to confirm
data quality Laboratory QA/QC samples included method blanks, laboratory duplicates, blank spikes and
matrix spike/matrix spike duplicate pairs In addition, certified reference materials (CRM) obtained from
the National Institute of Standards and Technology (NIST) were included as independent indicators of
method accuracy In our opinion, CRM's are the single most important QC sample since they provide an
independent indicator of method accuracy in complex, real world sample matrices Verification of low
calibration standard percent recovery at the method reporting limit is also provided Finally, since this was
our first experience with the sample matrices, each sample was analyzed in duplicate frequently with
varying dilution factors as an additional check of method performance Descriptions of the QA/QC
samples are given below including the a priori acceptance criteria
Certified Reference Material (Accuracy Check)
a Description Similar sample matrix with known concentrations of the element(s)
of interest
b Purpose To confirm that the analytical method is accurately measuring the
element(s) of interest in the sample matrix of interest without interferences or other
analytical artifacts
c Frequency A minimum of two per 12 hour analytical shift
d Acceptance Criterion Percent Recovery t 20% of the certified value at 10
times the MDL
e Formula %R=((SRM Observed)/(SRM Certified))* 100
Laboratory Duplicate (Precision Check)
a Description Two separate aliquots of the same sample are digested and
analyzed independently Designated by the "-LDUP" suffix on the sample
identification number
22

b Purpose To confirm that the analytical method is measuring the element(s) of
interest with acceptable precision Also a check of how well the unknown samples
have been homogenized during preparation
c Frequency A minimum of one per batch of 20 samples
d Acceptance Criterion Relative percent difference (RPD) between
duplicates < 20% at 10 times the MDL
e Formula RPD =(((absolute value (cone of first aliquot --CI) - (cone of second
aliquot=C2))* 100) / ((C1 + C2)/2))
Matrix Spike/ MS Duplicate (Accuracy Check)
a Description A known mass of the element(s) of interest is added to two of three
replicate aliquots of an unknown sample All aliquots are digested and analyzed
independently Designated by the "MS" (matrix spike) and "MSD" (matrix spike
duplicate) suffix on the sample identification number Spiking level should be
between 1 to 5 times the sample concentration for as many element(s) of interest as
possible
b Purpose To confirm that the analytical method is measuring the element(s) of
interest without unacceptable analytical matrix interferences Also a check on the
precision of the analysis by comparing (i e using RPD) the two matrix spikes as
duplicates This approach is especially useful for low level samples where the
element(s) of interest is not detected in the unspiked sample
c Frequency A minimum of one MS and MSD per batch of 10 samples
d Acceptance Criterion Percent Recovery :h 20% of the expected increase
and an RPD of < 20% (see note 2 for RPD definition)
e Formula % R =(((concentration for element of interest in matrix spike or matrix
spike duplicate sample) - (cone in unspiked replicate sample)) / (Expected
Increase)) * 100
4 Blank Spike (Check of Analytical Control)
a Description A known mass of the element(s) of interest is added to analyte free
water and carried through the entire digestion and analysis process
b Purpose To confirm that the analytical method is in control by accurately measuring
the element(s) of interest in an interference -free solution Also as a check of
recovery, in an interference -free matrix, of the spike(s) used for MS/MSD samples
c Frequency Albion Environmental analyzes a minimum of one blank spike
during each 12 hour analytical shift
d Acceptance Criterion Percent recovery ± 20% of the expected value
e Formula % R =((Total micrograms of element observed in blank spike) / (Total
micrograms of element added to blank spike digest )) * 100
Method Blank (Contamination Check)
a Description. The complete digestion and analysis procedure is conducted on a
sample containing only the digestion and analysis reagents (i a no sample material)
b Purpose To confirm that the digestion and analytical method and reagents are not
adding unacceptable amounts of the element(s) of interest to the unknown samples
c Frequency A minimum of one per 12 hour analytical shift
d Acceptance Criterion < Method Reporting Limit
Percent Recovery at Low Calibration Standard (Method Control and Accuracy
Check)
a Description The low calibration standard at the method reporting limit
(ML) is analyzed as an unknown sample to demonstrate that the analytical
method is in control and capable of accurately measuring metal concentrations
at the ML
b Purpose To insure that accurate aqueous metals data are being reported at the
method reporting limit
23

Frequency One on each analytical shift (day)
Acceptance Criteria
# 1 The calibration requirements of the analytical method must be met
# 2 Percent recovery must be between 75% and 125%
Sample Results
Analyses proceeded nominally on a single analytical shift for each method All reported results are in
micrograms per liter (parts per billion, ppb) Results of the analyses of all field (submitted) and QA/QC
samples are summarized in the attached spreadsheet table To minimize data censoring, all Se concentrations
are reported down to the MDL The following documents are included in this data report (G1231-9457-011
dated 13 January 2005)
This narrative report,
Table of analytical results,
Copy of original chain of custody sheets
QA/QC Variances
All QA/QC samples analyzed met the a priori method acceptance criteria The only exception was
marginally elevated variability in replicate analyses for two samples (i e GG -4555 RPD 22% and GG -4557
RPD 23%) by the DRC -ICP -MS method This situation was due to the low Se concentrations in the diluted
samples analyzed Elevated variability is not uncommon when working so close to the method reporting limit
(ML) and does not indicate any general concern about increased analytical variability by the DRC -ICP -MS
method at Se concentrations several fold above the ML
Discussion of Results
Table 1 compares the Se concentration data obtained by both analytical methods for the blank and five
test samples provided Each datum is an average of all replicate analyses of a given sample Agreement was
generally good between the two methods as indicated by the relatively low relative percent differences
Table 1 Comparison of Se concentrations in test samples determined by two independent analytical
methods
Sponsor ID
AE ID
DRC ICP -MS
Se (ppb)
HGAF
Se (ppb)
RPD
PARS002-Blank-RO
GG -4552
< 0.50
00631
PARS002-100H
GG -4553
936
825
126
PARS002-50H
GG -4554
468
408
137
PARS002-313
GG -4555
10.7
851
228
PARS002-513
GG -4556
5.45
391
329
PARS002-713
GG -4557
2 56
202
236
(RPD) although the DRC -ICP -MS consistently gave a higher Se concentration compared to the HGAF method
Two test samples (-50H and -100H) had much higher Se concentrations and appeared to be untreated
wastewater samples Inter -method agreement was better for these two samples, because, even with sample
dilution, Se levels in the samples analyzed by the DRC -ICP -MS method were well above (i e > 100 fold) the
method reporting limit The three remaining test samples (-313, -513 and -713) had much lower Se concentrations
and appeared to be treated wastewater samples Inter -method agreement was more variable in these samples
This situation is due to the fact that the diluted samples analyzed by DRC -ICP -MS had Se levels at or below the
method reporting limit where increased variability is expected The DRC -ICP -MS method is 10 times less
sensitive than the HGAF method Also at such low concentrations even a small level of uncorrected
interferences can have a more substantial impact on the final Se concentration observed Still the Se
concentrations observed by both methods were coherent and the DRC -ICP -MS data, even with a small,
consistent offset, confirmed the lower Se concentrations measured by the HGAF method Based on this method
validation study, we recommend that the more sensitive HGAF method be used for any future Se analyses
24

References Cited
U S EPA 1995a Method 1638 Determination of trace elements in ambient waters by inductively
coupled plasma -mass spectrometry EPA 821-R-95-031 Office of Water Washington, DC 47 pp
US EPA 1995b Method 200 8 Determination of trace elements in water and wastes by Inductively
Coupled Plasma -Mass Spectrometry rev 5 5 Environmental Monitoring Systems Laboratory,
Cincinnati, OH 57 pp
U S EPA 1996 Method 1669 Sampling ambient water for trace metals at EPA water quality criteria
levels EPA 821-R-96-005 Office of Water, Engmeeiing and Analysis Division, Washington, DC
36 pp
U S EPA 1996 Method 1632 Determination of inorganic arsenic in water by hydride generation flame
atomic absorption Office of Water, Washington, DC 30 pp
U S EPA 2004 Guidelines Establishing Test Procedures for the Analysis of Pollutants Under the Clean
Water Act, National Primary Drinking Water Regulations, and National Secondary Drinking Water
Regulations, Analysis and Sampling Procedures, Proposed Rule Part II Environmental Protection
Agency 40 CFR Part 122, et al Federal Register 69(66) 18166-18226
Windom, H L, Byrd, J T , Smith, R G , Jr, Huan, F 1991 Inadequacy of NASQAN Data for Assessing
Metal Trends in the Nation's Rivers Environ Sci Technol 25 1137.
APPROVED -
Paul N Boothe
Laboratory and QA Manager, Albion Environmental
25

APPENDIX C - PILOT PLANT METAL REMOVAL
DATA
26

APPENDIX C. Pilot Plant Metal Removal Data
Arsenic (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
14.1
15.8
<7.5
12/22/04
9
13.1
< 7.5
12/27/04
23.2
< 7.5
< 7.5
1/12/05
<7.5
<7.5
<7.5
1/19/05
19
<7.5
<7.5
2/2/05
48.9
33.7
15.2
2/10/05
53.7
14.1
<7.5
2/16/05
16.9
<7.5
<7.5
Antimonv (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
1.42
<0.40
0.88
12/22/04
4.78
<0.40
3.04
12/27/04
<0.40
<0.40
0.72
1/12/05
3.85
<0.40
<0.40
1/19/05
1.43
<0.40
<0.40
2/2/05
4.1
<0.40
<0.40
2/10/05
2.26
<0.40
<0.40
2/16/05
2.59
1.68
<0.40
Barium (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
153
93
388
12/22/04
475
506
634
12/27/04
282
68.1
261
1/12/05
520
534
526
1/19/05
324
308
385
2/2/05
366
346
345
2/10/05
456
424
391
2/16/05
730
521
517
27

Bervlhum (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
<1.0
2.4
38.1
12/22/04
1.4
9.5
82.1
12/27/04
<1.0
1.4
13.7
1/12/05
1.2
26.7
7.5 ,
1/19/05
1.2
2.5
15.2
2/2/05
<1.0
1.2
2.6
2/10/05
1.4
1.2
1.6
2/16/05
F 1.51
4.51
3.3
Chromium (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
16.1
<3.5
6.1
12/22/04
19.3
8.4
8.5
12/27/04
56.8
6.5
7.5
1/12/05
10.5
11.3
10.9
1/19/05
16.1
6.8
6.1-
2/2/05
6
7.2
6.4
2/10/05
6.8
10.4
7.8
2/16/05
14.9
10.5
10.3
Cobalt (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
3.3
<2.5
21.8
12/22/04
185
6.2
24.8
12/27/04
12.3
< 2.5
5.7
1/12/05
183
5.2
5.8
1/19/05
72.6
5.1
S.1-
2/2/05
111
5.5
5.7
2/10/05
120
6.4
5.7
2/16/05
166
47.5
18.1
S�
8 r7
q 79b
q3% aY
q51%,
q5-%
qi%
28
.T r/,2EsF
Oki,
TN ��i(kSG
.l I1 4�
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8 r7
q 79b
q3% aY
q51%,
q5-%
qi%
28

Conner (uo/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
288
14.1
2.2
12/22/04
278
20.4
10.4
12/27/04
701
20.3
53.6
1/12/05
128
10.1
8.2
1/19/05
460
13.5
13.2
2/2/05
297
10.1
11.9
2/10/05
242
12.9
17.5
2/16/05
312
219
11.7
Lead (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
73.4
<0.75
<0.75
12/22/04
23.4
<0.75
0.91
12/27/04
169
1.14
0.92
1/12/05
24.4
1.34
1.05
1/19/05
324
308
385
2/2/05
10.2
1.46
0.9
2/10/05
25.6
14.5
<0.75
2/16/05
11.2
2.41
2.07
Manganese (ua/Ll
Date
Influent
Bioreactor 1
Bioreactor 2
1/12/05
61600
62000
64400
1/19/05
33000
53600
63800
2/2/05
29700
32800
37200
2/10/05
35600
38500
35600
2/16/05
52300
42700
44500 -
a�4
11° �
-S oclg.-A 6E, a Q
A- M&
1 570
29

Merrury (nn/L. not)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
3260
134
61.6
12/22/04
2100
184
113
12/27/04
10300
70.3
54.6
1/12/05
120
173
121
1/19/05
1730
110
85
2/2/05
82.9
37.7
39.9
2/10/05
280
63
67.4
2/16/05
1910
970
69.5
Mnlvhrlpnum (un/Il
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
3.8
< 1.0
1.9
12/22/04
81.8
<1.0
1.3
12/27/04
8
<1.0
<1.0
1/12/05
68.4
<1.0
<1.0
1/19/05
22.7
<1.0
<1.0
2/2/05
57.7
<1.0
<1.0
2/10/05
47.7
<1.0
<1.0
2/16/05
42.6
11.3
<1.0
.,ilver (un/11
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
1.17
<0.75
<0.75
12/22/04
7.61
<0.75
6.54
12/27/04
7.22
0.78
0.79
1/12/05
<0.75
<0.75
<0.75
1/19/05
<0.75
<0.75
<0.75
2/2/05
<0.75
<0.75
<0.75
2/10/05
<0.75
<0.75
<0.75
2/16/05
<0.75
<0.75
<0.75
°7j
71 d�
a_
71
0�
30

i
Vanadium (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
1/12/05
60
67.7
76.4
1/19/05
38.3
48
62.4
2/2/05
35.3
36.5
42.8
2/10/05
42.1
52.4
58.4
2/16/05
128
132
114
Zinc (ua/L)
Date
Influent
Bioreactor 1
Bioreactor 2
12/17/04
129
44
34
12/22/04
576
34
49.8
12/27/04
217
53.6
12.3
1/12/05
438
11.2
0
1/19/05
296
34.1
17.7
2/2/05
423
17.2
19.1
2/10/05
385
26.1
17.7
2/16/05
552
357
28
BOD (ma/L)
Date
Influent
Effluent
1/20/09
380
570
1/28/09
180
350
2/3/09
85
200
2/11/09
130
350
COD (ma/L)
Date
Influent
Effluent
1/20/09
1120
850
1/28/09
414
612
2/3/09
242
585
2/11/09
1 3051
750
C) �Q5
- 7 t�G,f,S�
l l%® `PDQ (J
31

APPENDIX D - ONSITE PILOT REACTOR LOG
32

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ts
Progress Energy� g
, November 8, 2004
Ms. Susan Wilson
North Carolina Department of Environment and Natural Resources ..x._ -- - --- rw' .
Division of Water Quality Q
1617 Mail Service Center =
Raleigh, NC 27699-1617
Subject: Progress Energy Carolinas, Inc.
Roxboro Steam Electric Company
NPDES Permit Number NC0003425
Dear Ms. Wilson,
NOV 7 2 2004
DEMR - WATER QUALITY
POINT SOURCE BRANCH
-.,.�..., a,..,�,..x...-��,z..,.�...-,,,b_. .. _�•�, �...� _.«-�+-._._,,,.ars
In a letter dated October 25, 2004 you were informed of 3 chemicals Benetech BT -910,
FCA -2000, and Freezetro170, that will be used as anti -icing fluids to treat the coal that is
delivered to Roxboro Steam Electric Plant. Plant personnel were recently informed of an
additional anti -icing fluid that may be used. The additional chemical, NALCOAL 8880
will be applied to the coal at the mine prior to shipping to Roxboro Plant. These chemicals
will be used only in the winter months at a rate of approximately 87,000 gallons per
month. There is a small potential that some of these chemicals can be discharged into the
coal pile runoff pond via stormwater falling on the coal pile. The discharge of the coal pile
runoff pond (Outfall 006) has an aquatic toxicity monitoring requirement. Enclosed is the
MSDS for the this chemical.
If you have any questions or comments regarding this information, please contact Louise
England 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 submitted is, to the best of my knowledge and belief, true, accurate,
and complete I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations
Sincerely,
Cecil E. Rowland
Plant Manager
Roxboro Steam Electric Plant
En(49pE@nergy Carolinas, Inc
Roxboro Steam Plant
1700 Dunnaway Road
Semora, NC 27343

Ms. Susan Wilson
North Carolina Department of Environment and Natural
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Progress Energy Carolinas, Inc.
Roxboro Steam Electric Company
NPDES Permit Number NC0003425
Dear Ms. Wilson,
d
OCT 2 9 2004
,I
DENR - WATER QUALITY
POINT SOURCE BRANCH
In a letter dated October 7, 2004 you were informed of two new chemicals, GEOMELT
and BT -930, that will be used as anti -icing fluids to treat the coal that is delivered to
Roxboro Steam Electric Plant. Plant personnel recently found out that an additional three
anti -icing fluids maybe used. The three chemicals, Benetech BT -910, FCA -2000, and
Freezetrol 70) will be applied to the coal at the mine prior to shipping to Roxboro Plant.
These chemicals will be used only in the winter months at a rate of approximately 87,000
gallons per month. There is a small potential that some of these chemicals can be
discharged into the coal pile runoff pond via stormwater falling on the coal pile. The
discharge of the coal pile runoff pond (Outfall 006) has an aquatic toxicity monitoring
requirement. Enclosed are the MSDSs for the three chemicals.
If you have any questions or comments regarding this information, please contact Louise
England 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 submitted is, to the best of my knowledge and belief, true, accurate,
and complete I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations
Sincerely,
C, 7 ( �el6�'/
Cecil E. Rowland
Plant Manager
Roxboro Steam Electric Plant
Enclosure
Progress Energy Carolinas, Inc
Foxboro Steam Plant
1700 Dunnaway Road
Semora, NC 27343
MpVas RL65