NC0003425_Draft Permit_20020904

7'9• Y'li�"!/d `� Michael F Easley, Governor
State of North Carolina
William G Ross, Jr, Secretary
/ Department of Environment and Natural Resources
L L O n �O21
September 4, 2002.
Cecil Rowland
Plant Manager
Roxboro Steam Electric Generating Plant
1700 Dunnaway Rd.
Semora, North Carolina 27343
Dear Mr. Rowland
Alan W Klimek, f E , Director
is Division of Water Quality
SEP > 200
Subject: NPDES Draft Permit
Permit no. NC0003425
Roxboro Steam Electric Plant
Person County
Please find enclosed the DRAFT permit for the subject wastewater treatment plant for your
review and comment The draft permit includes the following items:
The draft pernut includes the addition of an internal outfall for metal cleaning waste
Outfall 009 includes limits for total suspended solids, oil and grease, total iron and total
copper according to 40 CFR 423 12 (b)(5)
The linnt for total selenium for Outfall 002 was eliminated. The sampling frequency was
changed to twice per month. A reasonable potential analysis shows selenium presented no
reasonable potential to exceed the water quality standard. In addition, the Division of
Environmental Health discontinued the fish consumption advisory for Hyco Lake.
Please provide any comments you have regarding the draft permit to this office by
October 11, 2002. At this time, the Division is also publishing a notice in the newspapers of
general circulation in Person County, inviting public comment on the draft pernut. Following
the 30 -day comment period, we will review all pertinent comments received and take
appropriate action on the permit renewal
If you have any questions concerning the draft permit or the other requirements for your
facility, please call me at [phone], extension 595.
Sincerely,
Teresa Rodn ez,
NPDES Unit
OCT 3 0 2002
Cc: NPDES Files
U.S. EPA Region 4
Raleigh Regional Office
Aquatic Toxicology Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer Visit us on the INTERNET @ www enr state nc us

PART I WASTEWATER MONITORING, CONTROLS AND LLIMITATIONS FOR PERMITTED DISCHARGERS
Page 3 of 9
Permit No NC0003425-
A (3). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from 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
Avera a
Daily Measurement
Maximum Fre uenc
�Sample
Sample
Location
Flow
Continuous during
disci e
Pump Logs
E
Free Available Chlorine
200 u /I
500 u /I 2/month
Multiple Grabs
E
Total Residual Chlorine
Monthly
Multiple Grabs
E
Total Chromium3
200 u /I
200 u /I 2/Month
Composite
E
Total Zinc3
1.0 m /I
1 0 m /I 2/Month
Composite
E
The 126 Priority Pollutants (40 CFR Part 423,
Appendix A) Exclusive of Zinc and Chromium'
No Detectable Amount Annual
Grab
E
Notes:
1 Sample locations: E - Effluent. Effluent sampling point shall be located at the discharge from the cooling tower prior to mixing other waste streams:-
Samples
treams:Samples taken in compliance with the monitoring requirements listed above shall be taken prior to mixing with other sources o stewater
2 Neither free available chlorine nor total residual chonne may be discharged from any single generating unit for more than two ours 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 ug/I is a daily maximum
limitation and is to be measured during the chlorine release period The 200 ug/I limitation is an average during the chlorine release period
3 These limitations and monitoring requirements apply if these substances are added by the Permittee for cooling tower maintenance. 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/1) 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
Special permit conditions applicable to the subject facility are listed under Part I, Section C of this permit.

NCDENR / DWQ
FACT SHEET FOR NPDES PER UT DEVELOPMENT
Carolina Power and Light- (Roxboro)
NPDES No. NC0003425
Facility Information
(1.) Facility Name:
Roxboro Steam Electric Plant
(2.) Permitted Flow, MGD:
Outfall 008
0 015 MGD
(6.) County:
Person
(3.) Facility Class:
NA
(7.) Regional Office:
RRO
(4.) Facility Status:
Existing
(8.) USGS Topo Quad:
Olive Hill
(5.) Permit Status:
Renewal
the fish advisory for selenium
Include an Internal Outfall for Metal
Stream Characteristics
(1.) Receiving Stream:
Hyco Reservoir
(2.) Subbasin:
03-02-05
(6.) Drainage Area (mi2):
(3.) SIC Code:
4911
(7.) Summer 7910 (cfs)
Not applicable
(4.) Stream Class:
WS -V, B
(8.) Average Flow (cfs):
Not applicable
(5.) 303(d) Listed:
Fish Adv. For
Selenium
(9.) IWC (%):
Not applicable
Conditions Incorporated into Permit Renewal
Proposed Conditions
Parameters Affected
Basis for Condition(s)
Change permit expiration date to
Expiration Date
Basmwide schedule.
3/31/07
Ehminate himt for for total selenium
Total Selenium
No reasonable potential and the
on Outfall 002
Division of Public Health removed
the fish advisory for selenium
Include an Internal Outfall for Metal
--
To ensure the Permittee complies
Cleaning Waste (Outfall 009)
with federal regulations at 40 CFR
423 12(b)(5) pertainmg to metal
cleaning wastes.

NPDES PERMIT FACT SHEET
Page 2
PROJECT NOTES
CP&L- Roxboro
NPDES No. NC0003425
Summary
■ This permit was last issued in January1998 and expired on April 30, 2002 The facility subnutted
EPA Application Forms 1 and 2C on October 31, 2002
■ This is a permit renewal for an electric generating facility that uses steam turbine generation (via
four coal-fired units with a total net capacity of 2462 MW) Units Nos. 1 and 2 (385 MWe and 670
MWe, respectively) use condensers as cooling devices Units Nos. 3 and 4 (707MWe and 700 MWe,
respectively) use cooling towers as cooling devices.
■ The facility has three existing cooling water intake structures (CWISs). The source water for CWISs
NOs. 1 and 2 is the Hyco Reservoir. The source water for CWIS no. 4 is the site's cooling canal.
■ The facility discharges to subbasin 030205 in the Hyco Reservoir. Discharges are mostly industrial,
with a very small domestic flow (internal Outfall 008) piped to the on-site ash pond. Discharges
from the ash pond (internal Outfall 002) and once -through cooling water are sent to the Discharge
Canal (outfall 003) The Discharge Canal and Coal Pile Runoff (outfall 006) both discharge to the
Hyco Reservoir The receiving waterbody is class WS -V B and is listed as impaired waters in the
Draft 2000 303(d) list due to fish advisories for selenium
• The Hyco Reservoir is a 17.6 km2 waterbody constructed in 1963 by CP&L to serve as a cooling
water source.
Permit Development
This facility is subject to EPA effluent guideline linuts per 40 CFR 423- Steam Electric Power Generating
Point Source Category.
Outfall 002 (Ash Pond Treatment System)- Internal discharge to the Discharge Canal
■ The Ash Pond Treatment System receives ash transport water, silo wash water low volume wastes
cooling tower blowdown (internal outfall 005), domestic sewage, some of the site's coal pile runoff,
ash landfill drainage and a portion of the site's storm water runoff. The current permit includes BPT
limits for total suspended solids (TSS) and oil and grease (O&G) per 40 CFR Section 423 12b(4), as
well as a Water Quality Based mass limit for Total Selenium. All existing linuts are being retained
Outfall 003 (Heated Water Discharge Canal System)- Direct discharge of once -through cooling water,
cooling tower discharge, stormwater, and ash pond discharge to Hyco Reservoir
■ The current permit includes BAT limits for Total Residual Chlorine (TRC) and restrictions on
duration of chlorine addition per 40 CFR Section 423 13b(1) and (2); pH limits were included per 40
CFR 42312(b)(1). The current permit also includes monitoring only provisions for total
phosphorus, total nitrogen, temperature (mixing zone), total arsenic and acute toxicity. There are no
water quality limited parameters All limits and monitoring provisions are being retained
Internal Outfall 005 (Cooling Tower Blowdown System)- Internal outfall to the ash pond
■ The current permit contains limits for Free Available Chlorine, total chronuum and total zinc per 40
CFR Section 423 13d(1). Restrictions regarding chlorine addition are included per 40 CFR Section
423.13d(2) and conditions pertaining to 126 Priority Pollutants are included per 40 CFR Section
423 13d(3) All linuts and monitoring requirements in the current permit are being retained. There
are no water quality limited parameters
Outfall 006 (Coal Pile Runoff to Hyco Reservoir)
■ The current permit contains limits for pH and total suspended solids per 40 CFR Section 423.12b(1)
and (9), respectively. The current permit also contains monitoring only requirements for acute
toxicity All lints and monitoring requirements are being retained.
Outfall 008 (Domestic Treatment System) - Internal outfall to ash pond
■ The current permit contains limits for biochemical oxygen demand (BOD), TSS and pH. Monitoring
only provisions are included for ammonia -nitrogen. All current limits and monitoring requirements
are being retained.
Outfall 009 (Metal Cleaning Wastes) - Internal outfall to the ash pond
■ This new outfall contains effluent limits for total suspended solids, oil & grease, total iron and total
copper in accordance with 40 CFR 423 12(b)(5)
DMR Data June 1999 - March 2002
■ Effluent Data (002 -Ash Pond) The facility complied with all effluent permit linuts. Flow values
ranged from a monthly average of 0 26 to 0 95 MGD Monthly average TSS ranged from 2 5 - 13 1
mg/l and monthly average O&G values ranged from 0 0 to 9.0 mg/1 Daily average values for Total
Selenium ranged from 0 26 - 0 75 pounds per day

NPDES PERMIT FACT SHEET
Page 3
CP&L- Roxboro
NPDES No NCO003425
V w
Effluent Data (003- Heated Water Discharge Canal Svstem) - The facility complied with all effluent
permit limits Monthly average flow values ranged from 801 - 1069 MGD Other monthly average
values reported are as follows, total arsenic <0 09 mg/l, temperature <37.48 °C, total nitrogen <0.6
mg/1 and total phosphorus <0 08 mg/I
Effluent Data (005- Cooling Tower Blowdown). No data was reported in PCS for total zinc The
facility complied with all other permit effluent limits Monthly average reported values for total
residual chlorine were <167.0 mg/1 and values for free available chlorine were < 170.0 mg/1.
Monthly average flow values were ranged from 0 92 - 7 2 MGD.
Instream Data There is no instream monitoring requirement for the current NPDES permit.
Total Selenium -Outfall 002 - A reasonable potential analysis was performed for selenium The
allowable concentration is 5 9 lb/day The maximum predicted concentration is 3 7 lb/day Since
selenium doesn't show reasonable potential and the fish advisory for selenium was removed by the
Division of Public Health the limit will be eliminated and monitoring will be changed to 2/month.
The results of the RPA are attached
Wasteload Allocation
■ The last waste load allocation was completed in 1997
Region Office Data
■ The Raleigh Regional Office completed a staff report on April 1, 2002 The Biological Monitoring Plan
was approved in December 2000 The fish consumption advisory was removed for Hyco Lake The
region recommends the renewal of the permit
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: September 11, 2002
Permit Scheduled to Issue October 26, 2002.
State Contact
If you have any questions on any of the above information or on the attached permit, please
contact Teresa Rodriguez at [phone], extension 595
Copies of the following are attached to provide further information on the permit development:
• Reasonable Potential Analysis (majors only)
• Draft Permit
NAME DATE:
Regional Office Comments
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DATE:
NAME:
(�, SUPERVISOR: DATE:

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REASONABLE POTENTIAL ANALYSIS
Prepared by Teresa Rodriguez
Facility Name = Roxboro CP & L - I Parameter= ISelenium -
NPDES # = NC0003425 - - F Limit 5 9 Ib/day - - -
Ow (MGD) = Dataset=yDMR
Qw (cfs) = - lbs/day -
7010s (cfs)= - _ Modlf{edData < Nondetects RESULTS
IWC (%) = Lake discharge _ I Std Dev 0335
Receiving stream I 4 Mean 0 507
Classification a C V 0 661
t a Sample# 0
-- t
Chronic CCC w/s7Q10 dil Acute CMC w/no dil Frequency of Detection --�
Parameter FINAL RESULTS, Ib/d FINAL RESULTS, ug #Samples] # Detects s Mult Factor= 1 200
Selenium j Max Value 3_1_00
Max Pred Cw 37 41 Max Pred Cw 3 720
1
Allowable Cw 5 9 t 222 222 4, A owable Cw 5 900
Modified Data Use 0 5 Detection Limit for non -detects s'
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AFFIDAVIT OF PUBLICATION
State of North Carolina
County of Durham
Donna B Minor being duly sworn says that she is the Principal Clerk of
The Durham Herald Co , Inc , publishers of The Herald -Sun, a newspaper
published in and of general circulation in said County, and that a notice of
which the annexed is a true copy, was published in said newspaper
one time on the 7th day of September„ 2002.
kill + /
Principal Clerk
Sworn to and subscribed before me this 9th day of September, 2002
a
Notary PLAIC
My commission expires December 16, 2006
Durham County, North Carolina
PUBLLC NOTICE
STATE OF
NORTH CAROLINA
ENVIRC)NMENTAL
MANAGEMENT
COMMISSION
1617 Bail Service
C.nter,
Raleigh, NC 27699-1617
NOTIFICATION OF
INTENT TO ISSUE A
STATE NFDES PERMIT
On the basis of thor-
ough stagy f review and
applicatlotm of NC Gen-
eral Statute 143 21, Pub-
lic law 92-500 and oth-
er lawful ftandards and
regulahorss, the North
Carolina Environmental
Managerrtnent Commis-
sion propmses to issue
a Na4onall Pollutant Dis—
charge Eliimination Sys-
tem (NPDIES) wastewa-
ter dischavge permit to
the person(s)listed be-
low effecitrve 45 days
from the publish date of
this notice.
Written cmmments re-
garding fthe proposed
permit wilfl be accepted
until 30 days after the
publish d2ate of this no-
tice All comments re-
ceived pnor to that
date are cconsidered in
the final determinations
re In ;me proposea
'permit '3e Director of
the NC Dimsion of Wa-
ter QualdV may decide
to hold at public meet- '
ing for t)he proposed
permit shYould the Divi-
sion
ivision recetrve a signifi-
cant degtree of public
interest.
Copies of ithe draft per-
mit and other support-
ing inforrmahon on file
deinco
used to terme n-
ditions praesent in the
draft permiiit are availa-
ble upon request and
payment o)f the costs of
reproductlaon Mail com-
ments ani9/or requests
for information to the
NC Divisfmn of Water
Quality at tthe above ad-
dress or c. -WI Ms Chris-
tie Jacksorn at (919) 733-
5083, exitension 538
Please &Anclude the
NPDES pearmit number
(attached)) in any com-
municat.orn ' Interested
persons rr'nay also visit
the Drvisicon of Water
Quality at 512 N Salis-
bury Stre3st, Raleigh,
NC 276004-1148 be-
tween tMe hours of
8 00a m rind 5 00 p m
to review✓ information
on file
NPDES PeDrrmrt Number
NC000342Z5, C P & L
Roxboro Steam Electric
Plant, 170M Dunnaway
Road, S;emora, NC
27343 has3 applied for a
permit rentewal for a fa-
cility locatded in Person
County discharging
treated wasetewater into
Hyco Lakes in the Roa-
noke Rverr Basin Cur-
rently no, parameters
are water quality limit-
ed This dMscharge may
affect futudre allocations
in this portion of the re-
ceiving strtaam
H -S 9-7, 2?002