NC0003425_Compliance Evaluation Inspection_20220729

r
rPermit NC0003425
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
Irlll3r IV
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,
Duke Energy Progress, LLC
is hereby authorized to discharge wastewater from a facility located at the
Roxboro Steam Electric Generating Plant
1700 Dunnaway Road, Semora
Person County
to receiving waters designated as Hyco Reservoir in the Roanoke River Basin in accordance with
effluent limitations, monitoring requirements, and other applicable conditions set forth in Parts I,
11, III and IV hereof.
This permit modification shall become effective August 1, 2021.
This permit and the authorization to discharge shall expire at midnight on June 30, 2025.
Signed this day June 25, 2021.
F
1) Svp ed by: 1
BP 9 f ayo
for S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page I of 29

1 �
1
Permit NCO003425
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this
permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive
authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and
provisions included herein.
Duke Energy Progress, LLC is hereby authorized to:
1. Continue to operate the following systems locates{ at Roxboro Steam Electric Generating Plant off
NCSR 1377 near Roxboro in Person County:
• Outfall 001. Discharge overflow from the East Ash Basin Extension, extracted groundwater, ash
basin closure flows, and stormwater runoff into a UT to Hyco Reservoir.
• Ash Pond Treatment System (Internal Outfall 002). Continue to discharge ash transport water, low
volume wastewater, runoff from the ash landfill, dry fly ash handling system wash water, ash 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 through an internal
conveyance to the heated discharge pond, and is ultimately released into Hvco Reservoir through
Outfall 003.
• Heated Discharge Pond (Outfall 003). Continue to discharge once -through cooling water,
stormwater runoff, coal pile runoff, flue gas desulfurization treated wastewater, flue gas
desulfurization cooling water, ash pond dam chimney drains and other basin seepage flows,
anhydrous ammonia testing waters and emergency flows (until construction of low volume wastes
treatment system), effluent from the ash pond (Outfall 002), ash basin closure flows, and extracted
groundwater. Continue to discharge the effluent from the low volume waste treatment systems
(Outfall 012A and 012B), and yard sump overflow to the heated discharge pond. This outfall
discharges to Hyco Reservoir.
• Cooling Tower Blowdown System (Internal Outfall 005). Continue to discharge cooling tower
blowdown from unit number 4 into the low volume wastewater treatment system (outfall 012B) or
into the heated discharge pond.
• Coal Pile Runoff Treatment System (Outfall 006). Emergency overflow from the coal pile and
other coal handling areas, runoff from the limestonela f— stack, raw water tank
drainage, incidental leakage from absorbent seals, and the truck wheel wash water. On a non-
emergency basis these waters are routed to a retention pond for treatment by neutralization, 16'e' ZC
sedimentation, and equalization prior to being discharged directly into Hyco Reservoir.
• Domestic Wastewater Treatment System (Internal Outfall 008). Continue to discharge effluent �HU
from the d mestic treatment system into the asp pond or the low volume waste treatment system adi ,,
2B (Outfall 1
• Chemical Metal Cleaning Treatment System (Internal Outfall ). Continue to discharge
chemical metal cleaning wastes into the low volume waste treatment system (Outfall 012).
• Flue Gas Desulfurization Treatment System (Internal Outfall 010). Continue to operate a FGD, wet
scrubber treatment system consisting��/settling pond and a bioreactor, discharging into the heated
dischargepond. PK_6e44,^3iIA D/0
• Flue Gas Desulfurization Treatment System (Internal Outfall 011). Upon completion of
construction, operate a Flue Gas Desulfurization System discharging to the low volume waste
treatment system (outfall 012B) or the heated discharge pond.
• Low Volume Wastes Treatment System (Internal Outfall 012A). Upon construction, discharge
landfill stormwater, east ash basin closure flows, treated extracted groundwater, contact and non -
contact storm water runoff into the heated discharge pond.
• Lined Retention Basin (Internal Outfall 012B). Continue to discharge low volume wastes, metal
cleaning wastes (Internal Outfall 009), ash silo wash eater, cooling water from Unit 4, anhydrous
ammonia testing waters and emergency flows, domestic sewage treatment plant effluent, domestic
W WTP effluent (Internal Outfall 008), bottom ash purge from the submerged flight conveyers
(purge volume not to exceed 10% of the water systems volume), ash landfill leachate, treated FGD
Page 2 of 29

ir
Permit NC0003425
blowdown, storm water runoff, runoff from the coal pile and other coal handling areas, runoff from
the limestone and emergency gypsum stack, raw water tank drainage, incidental leakage from
absorbent seals, and the truck wheel wash water. These waters are routed to a retention pond for
treatment by neutralization, sedimentation, and equalization prior to being discharged to retention
basin. The retention basin discharges into the heated discharge pond.
Emergency overflow from low volume wastewater treatment system (Outfall 012C). Continue to
discharge emergency overflow from retention basin to Hyco Reservoir.
2. Discharge from said treatment works and/or outfalls at the locations specified on the attached map
into the Hyco Reservoir, classified as WS-V & B waters in the Roanoke River Basin.
Page 3 of 29

Permit NC0003425
Part I
A. (1) Effluent Limitations and Monitoring Requirements (Outfall 001) [15A NCAC 02B .0400 et seq.,
02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee
is authorized to discharge from Outfall 001 (overflow from East Ash Basin Extension, and stormwater
w....,fn S„rh digrharoeg shall he limited and monitored' by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow, MGD
Weekly
Estimate
Effluent
H
6.0 to 9.0 S.U.
Monthl •
Grab
Effluent
TSS
30.0 mg/ L
100.0 m /L
Monthly
Grab
Effluent
Oil and Grease
15.0 m /L
20.0 m L
Monthly
Grab
Effluent
Fluoride
1.8 m /L
1.8 m /L
Monthl Weekl 2
Grab
Effluent
Total Arsenic, µ L
10.0 µ /L
340.0µ /L
Monthl /Weeklv2
Grab
Effluent
Total Copper, µ L
Monthl Week) 2
Grab
Effluent
Total Antimony, µ /I
Monthl Weekl 2
Grab
Effluent
Total Lead, µ /L
Monthl /Week) 2
Grab
Effluent
Total Selenium
5.0 µ /L
56.0 µ /L
Monthl Weekly=
Grab
Effluent
Total Barium, m /L
Monthl Weekl 2
Grab
Effluent
Total Iron, µ /L
Monthl /Week) 2
Grab
Effluent
Total Manganese, µ /L
Monthl /Weeklv2
Grab
Effluent
Total Zinc, µ /L
Monthl /Week) 2
Grab
Effluent
Total Nickel, µ /L
Monthl /Week) 2
Grab
Effluent
Total Mercury, n /L'
Monthl /Week) 2
Grab
Effluent
Chlorides,mg/L
Monthl /Week) 2
Grab
Effluent
Nitrate/Nitrite as N
Monthly
Grab
Effluent
Sulfates
Monthly
Grab
Effluent
Total Dissolved Solids,
m /L
Monthly
Grab
Effluent
Hardness -Total as
[CaCOz or Ca + Mg)] m L
Quarterly
Grab
Effluent
Acute Toxicity4
Quarterly
Grab
Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. The facility shall conduct weekly sampling during removal of the ash from the east ash basin
extension.
3. The facility shall use EPA method 1631 E.
4. Acute Toxicity (Phnephales pronielas, 24-hour) monitoring shall be performed in accordance with
Special Condition A. (14) of this permit.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Within 180 days of the issuance date of the permit the permittee shall submit Items V and VI of NPDES
application Form 2C.
If any one of the pollutants (As, Se, Hg, Ni, and Pb) reaches 85% of the allowable level during the
decanting/dewatering, the facility shall immediately discontinue discharge of the wastewater and report
it to the Regional Office and Complex NPDES Permitting Branch via telephone and e-mail.
Page 4 of 29

r r
Permit NCO003425
A. (2) Effluent Limitations and Monitoring Requirements (Outfall 002 - normal operation - decanting
phase) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of the permit and lasting until expiration or
commencement of the dewatering operations, the Permittee is authorized to discharge from Internal
Outfall 002 ash pond effluent (decanting the free water above the settled ash layer that does not
involve mechanical disturbance of the ash). Such discharges shall be limited and monitored I by the
Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow
Daily
Continuous
Effluent
Oil and Grease
15.0 m L
20.0 m g/ L
2/ Month
Grab
Effluent
Total Suspended Solids3
30.0 m /L
100 m g/ L
2/ Month
Grab
Effluent
Total Arsenic, µ /L
Weekly
Grab
Effluent
Total Molybdenum, µ L
WeeklV
Grab
Effluent
Total Selenium, µ /L
Weeklv
Grab
Effluent
Ha
Monthly
Grab
Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system See Special Condition A. (29).
2. 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.
3. The facility shall continuously monitor TSS concentration when the decanting process commences and
the pump is operating. The dewatering pump shall be shutoff automatically when one half of the
Daily Maximum limit (15 minutes average) is exceeded. Pumping will be allowed to continue if
interruption might result in a dam failure or damage. Continuous TSS monitoring is only required
when pumps are employed for decanting.
4. The facility shall continuously monitor pH when the decanting process commences and the decanting
pump shall be shutoff automatically when 15 minutes running average pH falls below 6.1 standard
units or rises above 8.9 standard units. Pumping will be allowed to continue if interruption might
result in a dam failure or damage. Continuous pH monitoring is only required when pumps are
employed for decanting.
By April 30, 2021 there shall be no discharge of pollutants in bottom ash transport waters. This
requirement only applies to bottom ash transport water generated after April 30, 2021.
In accordance with N.C.G.S. § 130A-309.210, by December 31, 2019, the facility shall convert to the
disposal of dry bottom ash, as defined in the Coal Ash Management Act ("CAMA").
Fly ash is handled dry at this facility.
The facility is allowed to draw down the wastewater in the ash pond to no less than three feet above the
ash.
The limits and conditions in Section A. (3) of the permit apply when water in the ash settling basin is
lowered below the three feet trigger mark, measured at the pump intake.
The rate for lowering the liquid level in a coal ash pond shall not exceed one (1) foot per day unless a
higher rate is supported to the satisfaction of DEMLR and in accordance with NCAC, Title 15A,
Subchapter2K.
Page 5 of 29

0
E
Permit NC0003425
The facility shall use a floating pump station with free water skimmed from the basin surface using an
adjustable weir.
The facility shall notify via e-mail DWR Complex NPDES Permitting Unit and DWR Raleigh Regional
Office seven calendar days prior to the commencement of the dewatering.
When the facility commences the ash pond decanting/dewatering, the facility shall treat the wastewater
discharged from the ash pond using physical -chemical treatment, if necessary, to assure state Water
Quality Standards are not contravened in the receiving stream. Duke Energy shall notify DWR NPDES
Permitting and DWR Raleigh Regional Office, in writing, within seven calendar days of installing
additional physical -chemical treatment at this Outfall.
Page 6 of 29

Permit NC0003425
A. (3) Effluent Limitations and Monitoring Requirements (Outfall 002 - dewatering phase) [15A NCAC
02B .0400 et seq., 02B .0500 et seq.]
During the period beginning upon the commencement of the dewatering operations and lasting until
expiration, the Permittee is authorized to discharge from Internal Outfall 002 (Ash Pond Treatment
System Dewatering- removing the interstitial water). Such discharges shall be limited and monitored
by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Avera a
Daily
Maximum
Measurement
Fregueng
Sample
T e
Sample
Location
Flow, MGD
Weeklv
Continuous
Effluent
Interstitial Flow
3.0 MGD
Weekl
Continuous
Effluent
Total Selenium, jig/ L
Weeklv
Grab
Effluent
Total Arsenic, µ /L
Weeld
Grab
Effluent
Total Mercury, n L
Weeklv
Grab
Effluent
Total Molvbdenum, µ /L
Weeklv
Grab
Effluent
Total Antimony, µ /L
Weekl
Grab
Effluent
Total Copper, pglL
Weekh,
Grab
Effluent
Oil and Grease
15.0 m /L
20.0 m /L
Weeklv
Grab
Effluent
Total Suspended Solids'
30.0 m /L
100 m /L
Weeklv
Grab
Effluent
H'
Monthly
Grab
Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Effluent sampling shall be conducted at the discharge from the ash settling pond prior to mixing
with any other waste stream.
3. The facility shall continuously monitor TSS concentration when the dewatering process commences
and the pump is operating. The dewatering pump shall be shutoff automatically when one half of the
Daily Maximum limit (15 minutes average) is exceeded. Pumping will be allowed to continue if
interruption might result in a dam failure or damage. The continuous TSS monitoring only required
when the pumps are employed for dewatering.
4. The facility shall continuously monitor pH when the dewatering process commences and the
dewatering pump shall be shutoff automatically when the 15 minutes running average pH falls below
6.1 standard units or rises above 8.9 standard units. Pumping will be allowed to continue if
interruption might result in a dam failure or damage. The continuous pH monitoring only required
when the pumps are employed for dewatering.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
By April 30, 2021 there shall be no discharge of pollutants in bottom ash transport waters. This
requirement only applies to fly ash transport water generated after April 30, 2021.
In accordance with N.C.G.S. § 130A-309.210, by December 31, 2019, the facility shall convert to the
disposal of dry bottom ash, as defined in the Coal Ash Management Act ("CAMA").
Fly ash is dry handled at this facility.
The rate for lowering the liquid level in a coal ash pond shall not exceed one (1) foot per day unless a
higher rate is supported to the satisfaction of DEMLR and in accordance with NCAC, Title 15A,
Subchapter 2K.
Page 7 of 29

s
Permit NC0003425
The facility shall notifv via e-mail DWR Complex NPDES Permitting Unit and DWR Raleigh Regional
Office seven calendar days prior to the commencement of the dewatering.
When the facility commences the ash pond decanting/dewatering, the facility shall treat the wastewater
discharged from the ash pond using physical -chemical treatment, if necessary, to assure state Water
Quality Standards are not contravened in the receiving stream. Duke Energy shall notify DWR NPDES
Permitting and DWR Raleigh Regional Office, in writing, within seven calendar days of installing
additional physical -chemical treatment at this Outfall.
Page 8 of 29

r
PermitNCO003425
A. (4) Effluent Limitations and Monitoring Requirements (Outfall 003) [15A NCAC 02B .0400 et seq.,
026.0500 et seq.]
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 Discharge Pond to the Hyco Reservoir). 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
T e
Sample
Location' -
Flow
Daily
Calculation
Efflu011
Total Residual Chlorine'
_
28 p /L
2/Month
Grab
Effluent
Total Phosphorus
Monthh
Grab
Effluent
Total Nitrogen
Monthly
Grab
Effluent
Temperature a
Continuous
Recorder
Effluent,
Afterbav
Discha rgc
Total Arsenic, µ g/L
Month( Weekly
Grab
Efflurnt
Total Selenium, µ /L
Monthly/Weekly'
Grab
Effluent
Chloride, m /L
Monthly/Weekly`
Grab
Effluent
Total Mercury, n /L^
Monthly/Weekly
Grab
Effluent
Total Antimony, µ /L
Monthly/Weekly^
Grab
Effluent
Total Molybdenum, µ L
Monthly/ / %Veekh'
Grab
Effluent
Total Thallium µ /L
Monthly/Weekly
Grab
Effluent
H
6.0to9.0S.U.
Monthl /Weekly
Grab
Effluent
Ammonia
1.0 m /L
5.0 m /L
Daily-
Grab
Effluent
Acute Toxici "
Quarterly
Composite
Effluent_
Hardness -Total as
[CaCOsor (Ca + Mg)],
m /L
Quarterly
Grab
Effluent, 4C 4D
Turbidity9, NTU
Monthly Weekl -'
Grab
Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Effluent sampling shall be performed in the heated discharge pond at the point of discharge into Hyco
Reservoir.
3. Total Residual Chlorine compliance (including monitoring) is required only if chlorine or chlorine
derivative is added to the cooling water. The Division shall consider all effluent TRC values reported
below 50 µg/L to be in compliance with the permit. However, the permittee shall continue to record
and submit all values reported by a North Carolina certified laboratory (including field certified), even
if these values fall below 50 µg/ L.
4. The Permittee shall operate so as to remain in compliance with the conditions outlined in the mixing
zone.defined in Special Condition A. (17) of this permit. The temperature of Hyco Reservoir at no
time shall exceed the thermal water quality standard outside the mixing zone defined in Special
Condition A. (17). These thermal limitations may be deleted or revised, as appropriate, based upon
evaluation of the results of the thermal studies. This permit may be reopened to implement a
temperature limit if the permittee is not in compliance with Special Condition A. (17).
5. The facility shall conduct weekly sampling during clewatering of the ash basin.
6. The facility shall use EPA method 1631E.
7. Ammonia limit and monitoring is only applicable in the event of an emergency release of anhydrous
ammonia during the time the released waters are discharged through outfall 003.
Page 9 of 29

Permit NC0003425
8. Acute Toxicity (Pimephales promelas) P/F @ 90%, March, June, September and December. See Special
Condition A. (14) of this permit. 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.
9. The net turbidity shall not exceed 50 NTU using a grab sample and measured by the difference
between the effluent turbidity and the background turbidity. The sample for the background turbidity
shall be taken at a point in the receiving waterbody upstream of the discharge location, and the
background turbidity and the effluent turbidity samples shall be taken within the same 24 hour
period.
NTU - Nephelometric Turbidity Unit
The Permittee is allowed to operate Unit 3 in a once -through cooling mode from October 15 through April
30.
If any one of the pollutants (As, Se, and Hg) reaches 85% of the allowable level during the
decanting/dewatering, the facility shall immediately discontinue discharge of the wastewater and report
it to the Regional Office and Complex NPDES Permitting Branch via telephone and e-mail.
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.
Page 10 of 29

Permit NC0003425
A. (5) Effluent Limitations and Monitoring Requirements (Internal Outfall 005) [15A NCAC 02B .0400
et seq., 02B .0500 et seq.]
During the period beginning on the effective date of the permit and lasting until expiration, the Pennittee
is authorized to discharge from Internal Outfall 005 (Cooling Tower Blowdown). Such discharges shall
be limited and monitored' by the Permittee as specified below:
LIMITS
MONITORING REQUIREMENTS
EFFLUENT
Monthly
Daily
Measurement
Sample
CHARACTERISTICS
Sample Type
Average
Maximum
Fre uen
Locationz
Flow
Continuous
pump Logs
Effluent
durin discharge
Free Available Chlorine'
200 jig/ L
500 µ /L
2/month
Multiple Grabs
Effluent
Total Residual Chlorine3
Monthly
Multiple Grabs
Effluent
Total Chromium4
200 µ /L
200 jig/ L
2/Month
Composite
Effluent
Total Zinc+
1.0 m /L
1.0 m /L
2 Month
composite
Effluent
The 126 Priority Pollutants (40
CFR Part 423, Appendix A)
No Detectable Amount
Annual
Grab
Effluent
Exclusive of Zinc and
Chromium'
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Effluent sampling shall be conducted at the discharge from the cooling tower prior to mixing with
other waste streams.
3. 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
that discharge for more than two hours is required for macroinvertebrate control. The 500 µg/L is a
daily maximum limitation and is to be measured during the chlorine release period. The 200 µg/L
limitation is an average during the chlorine release period. Monitoring is required ordy when chlorine
is added to the cooling water system.
4. Limitations and monitoring requirements for the 126 Priority Pollutants (per 40 CFR Part 423,
Appendix A, exclusive of zinc and chromium) apply only if these substances are added by the
permittee for cooling tower maintenance. Compliance with the limitations for the 126 priority
pollutants in 40 CFR 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. All primary industries are required to submit a priority pollutant analysis in accordance
with 40 CFR Part 122 with their application for permit renewal.
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 DWR: pH (SU), flow (MGD) and
total residual chlorine (mg/ L). The Permittee shall notify the Division of Water Resources, Raleigh
Regional Office, prior to draining the cooling tower, except during non -office hour emergencies when
notification must be made the next working day. Total residual chlorine monitoring is required prior to a
maintenance drain of the Unit 4 Cooling Tower only if chlorine is added to the system.
Page I I of29

0 0
Permit NC0003425
A. (6) Effluent Limitations and Monitoring Requirements (Outfall 006) [15A NCAC 02B .0400 et seq.,
02B .0500 et seq.]
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee
is authorized to discharge from Outfal1006 (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
Average
Daily
Maximum
Measurement
Fre uenc :
Sample Type
Sample Location
Flow
Monthly
Estimate
Effluent
Total Suspended Solids
50.0 m /L
Monthly
Grab
Effluent
Total Selenium
56.0 µ g/L
Monthly
Grab
Effluent
Oil and Grease
20.0 m / L
Monthly
Grab
Effluent
H
6.0 to 9.0 S.U.
Monthly
Grab
Effluent
Acute Toxicity'
I
Annualh
Grab
I Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. The permittee shall collect samples if the pond discharges during a calendar month. If there is no
discharge during the calendar month "No Flow" shall be denoted in the DMR.
3. Effluent sampling shall be conducted at the point of discharge into Hyco Reservoir. Samples taken in
compliance with the monitoring requirements listed above shall be taken prior to mixing with other
sources of wastewater.
4. Acute Toxicity (Ptmephales promelas, 24-hour) monitoring shall be performed in accordance with
Special Condition A. (15) of this permit.
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 anv discernable, confined
and/or discrete conveyance from, or through, coal.
Within 180 days of the effective date of the permit, the permittee shall submit Items V and Vl of NPDES
application Form 2C.
Page 12 of 29

Permit NCO003425
A. (7) Effluent Limitations and Monitoring Requirements (Internal Outfall 008) [15A NCAC 02B .0400
et seq., 02B .0500 et seq.]
During the period beginning upon the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge from Internal Outfall 008 (Domestic Wastewater Treatment System)
into the low volume waste treatment system. Such discharges shall be limited and monitored I by the
Permittee as specified below:
EFFLUENT
CHARACTERISTICS
DAILY MAXIMUM
MONITORING REQUIREMENTS
Monthly
Avera a
Daily
Maximum
Measurement
Frequency
Sam
Sample Type
Sample
Locationz
Flow
0.025 MGD
Quarterly/ Annual3
Pump Las
Effluent
Biochemical Oxygen
Demand 5-day@ 20°C
30.Omg/ L
45.0mg/L
Quarterly/Annual3
Grab
Effluent
Total Suspended Solids
30.0 m /L
45.0 m /L
Quarter) Annual-'
Grab
Effluent
Total Ammonia as N
Quarter) Annual'
Grab
Effluent
PH
Quarterly/Annual3
Grab
Effluent
Fecal Coliform
200/100mL
400/100ml-
I Quarterly/Annual3
Grab
Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Samples taken in compliance with the monitoring requirements listed above shall be taken after
treatment and prior to mixing with other sources of wastewater.
3. After one year of quarterly monitoring the sampling frequency will be modified to Annual.
See Special Condition A. (22).
Page 13 of 29

Permit NC0003425
A. (8) Effluent Limitations and Monitoring Requirements (Internal Outfall 009) [15A NCAC 02B .0400
et seq., 02B .0500 et seq.]
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). Such discharges shall be
limited and monitored' by the Permittee as specified below:
LIMITS
MONITORING REQUIREMENTS
EFFLUENT
Monthly
Daily
Measurement
Sample
Sample
CHARACTERISTICS
Average
Maximum
Frequency
Type
3
Location
Once per Discharge
Pump Logs
Flow
Event
or similar
Outfall 012E
reading
Total Suspended Solids
30.0 mg/ L
100 mg/ L
Once Per Discharge
Event
Grab
Outfall 012B
Oil and Grease
15.0 mg/L
20.0 mg/L
Once per Discharge
Event
Grab
Outfall 012B
Total Copper
1.0 mg/L
1.0 mg/L
Once per Discharge
Grab
Outfall 012B
Event
Total Iron
1.0 mg/L
1.0 mg/L
Once per Discharge
Grab
Outfall 012B
Event
P H
Once per Discharge
Grab
Outfall 012B
Event
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Samples taken in compliance with the monitoring requirements listed above shall be taken prior to
mixing with other sources of wastewater.
Page 14 of 29

r r
Permit NC0003425
A. (9) Effluent Limitations and Monitoring Requirements (Internal Outfall 010) [15A NCAC 0213.0400
et seq., 0213 .0500 et seq.]
During the period beginning on the effective date of the permit and lasting until the existing FGD
treatment system is decommissioned, the Permittee is authorized to discharge from Internal Outfall 010
(FGD blowdown). Such discharges shall be limited and monitored I by the Permittee as specified below:
EFFLUW
CHARACTERISTICS
I LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
Locationz
Flow
Monthly
Pump Logs or
similar reading
Effluent
Total Suspended Solids
30.0 mg./ L
100.0 mg/ L
Quarterly
Grab
Effluent
Oil and grease
15.0 m L
20.0 mg/ L
Quarterly
Grab
Effluent
Total Arsenic'
8.0 L
18.0 L
Quarterly
Grab
Effluent
Total Mercurv'
34.0 n /L
103.0 n /L
Quarterly
Grab
Effluent
Total Selenium'
29.0 L
70.0 L
Quarterl
Grab
Effluent
Nitrate/Nitrite as N'
3.0 mg/ L
4.0 m /L
Quarterly
Grab
Effluent
H
i
Quarterly
Grab
Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. Special Condition A. (29),
2. 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.
3. In accord with the Steam Electric Effluent Limitations Guidelines for FGD wastewater (40 C.F.R.
423), these limits shall become effective on December 31, 2021. This permit may be reopened and
modified if changes are made to 40 C.F.R. 423.
There shall be no discharge of untreated FGD blowdown.
The permittee will operate the FGD wastewater system until all coal-fired generation units at the site are
retired. Performance of the FGD wastewater treatment system shall be optimized to maximize pollutant
reduction and minimize variability.
Page 15 of 29

X
PermitNC0003425
A. (10) Effluent Limitations and Monitoring Requirements (Internal Outfall 011) [15A NCAC 02B .0400
et seq., 02B .0500 et seq.]
During the period beginning upon the commencement of operations of the new FGD system and lasting
until expiration, the Permittee is authorized to discharge from Internal Outfall 011 (FGD blowdown).
Such discharges shall be limited and monitored I by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Averse
Daily
Maximum
Measurement
Fre uenc
Sample Type
Sample
Location
Flow
Monthly
Pump Logs or
similar reading
Effluent
Total Suspended Solids
30.0 m /L
100.0 mg/ L
Quarterly
Grab
Effluent
Oil and grease
15.0 m L
20.0 m / L
Quarterly
Grab
Effluent
Total Arsenic'
1 8.0 /L
18.0 /L
Quarterly
Garb
Effluent
Total Mercury '
34.0 n /L
103.0 n /L
Quarterly
Grab
Effluent
Total Selenium
29.0 L
70.0 /L
Quarterly
Grab
Effluent
Nitrate/Nitrite as N
3.0 m /L
4.0 m /L
QuarterlyGrab
Effluent
H
Quarterl
Grab
Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. 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.
3. In accord with the Steam Electric Effluent Limitations Guidelines for FGD wastewater (40 C.F.R.
423), these limits shall become effective on December 31, 2021. This permit maybe reopened and
modified if changes are made to 40 C.F.R. 423.
There shall be no discharge of untreated FGD blowdown.
The permittee will operate the FGD wastewater system until all coal-fired generation units at the site are
retired. Performance of the FGD wastewater treatment system shall be optimized to maximize pollutant
reduction and mirdmize variabilitv.
Page 16 of 29

r
Permit NC0003425
A. (11) Effluent Limitations and Monitoring Requirements (Internal Outfall 012A) [15A NCAC 02B
.0400 et seq., 02B .0500 et seq.)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee
is authorized to discharge from Internal Outfall 012A. Such discharges shall be limited and monitored'
by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sam
Sample Type
Sample
Location
Flow
Monthly
Pump Logs or
similar reading
Effluent
Total Suspended Solids
30.0 m /L
100.0 m / L
Monthly
Grab
Effluent
Oil and grease
15.0 m /L
20.0 m /L
Monthly
Grab
Effluent
Total Arsenic, µ L
Weekly'
Grab
Effluent
Total Molybdenum, µ /L
Weekly'
Grab
Effluent
Total Selenium, µ /L
Weekly-'
Grab
Effluent
Total Mercur , n /L
Weekly'
Grab
Effluent
Total Antimonv, µ L
Weekly'
Grab
Effluent
Total Copper, µ L
Weekly'
Grab
Effluent
H
Weekly-'
Grab
Effluent
Notes
1. The pernnittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Samples taken in compliance with the monitoring requirements listed above shall be taken after
the treatment system and prior to mixing with other sources of wastewater.
3. Monitoring is only required when discharging east ash basin closure flows or treated groundwater
through this outfall.
Within 180 days of the commencement of operations of the treatment system the permittee shall submit
Items V and VI of NPDES application Form 2C.
Page 17 of 29

LIE
Permit NC0003425
Agitations and Monitoring Requirements (Internal Outfall 01a[15A NCAC 02B
.0400 et seq., 02B .0500 et seq.]
During the period beginning on Ue effective date of the permit and lasting until expiration, the Permittee
is authorized to discharge from ]ygrnal Outfall� Such discharges shall be limited and monitored'
by the Permittee as specified below.
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Fre uenc
Sample Type
Sample
Location
Flow
Monthly
Pump Logs or
similar reading
Effluent
Total Suspended Solids
30.0 m /L
100.0 m /L
Monthly
Grab
Effluent
Oil and grease
15.0 m /L
20.0 m /L
Monthly
Grab
Effluent
H
Quarterly
Grab
Effluent
Ammonia'
Daily'
Grab
Effluent
Total Arsenic
MonthlyGrab
Effluent
Total Sele�uum
Monthly
Grab
Effluent
rfoijMercury4
Monthly
Grab
Effluent
Notes
1. The pernttee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Samples taken in compliance with the monitoring requirements listed above shall be taken after
the treatment system and prior to mixing with other sources of wastewater.
3. Ammonia limit and monitoring is only applicable in the event of an emergency release of
anhydrous ammonia during the time the released waters are discharged through outfall 012B.
4. The facility shall use EPA method 1631E.
Within 180 days of the cormnencement of operations of the treatment system the permittee shall submit
Items V and VI of NPDES application Form 2C.
Except for those discharges authorized below, or when the bottom ash transport water is used in
the FGD scrubber, there shall be no discharge of pollutants in bottom ash transport water. Bottom
ash transport water shall be discharged to the FGD scrubber during normal operations.
If the FGD Scrubber is unavailable to receive bottom ash transport water, the discharge of
pollutants in bottom ash transport water (bottom ash purge water) from a properly installed,
operated, and maintained bottom ash system to the Lined Retention Basin is authorized under the
following conditions:
A. To maintain system water balance when precipitation -related inflows are generated from a 10-
year storm event of 24-hour or longer duration (e.g., 30-day storm event) and cannot be
managed by installed spares, redundancies, maintenance tanks, and other secondary bottom
ash system equipment; or
B. To maintain system water balance when regular inflows from waste streams other than
bottom ash transport water exceed the ability of the bottom ash system to accept recycled
water and segregating these other waste streams is feasible; or
C. To maintain system water chemistry where current operations at the facility are unable to
currently manage pH, corrosive substances, substances or conditions causing scaling, or fine
particulates to below levels which impact system operation or maintenance; or
Page 18 of 29

PermitNC0003425
D. To conduct maintenance not otherwise described above and not exempted from the definition
}' of transport water in 40 C.F.R. § 423.11(p), and when water volumes cannot be managed by
1 installed spares, redundancies, maintenance tanks, and other secondary bottom ash system
equipment.
In no event shall the total volume of the discharge to the Lined Retention Basin exceed a 30-day
rolling average of ten percent of the primary active wetted bottom ash system volume. The
volume of daily discharges used to calculate the 30-day rolling average shall be calculated using
measurements from Flow monitors or pump logs. Based on a calculated bottom ash transport
system volume of 0.995 million gallons, the 30 day rolling average discharge shall not exceed 0.099
MGD.
Pago 19 of 29

X
Permit NC0003425
A. (13) Effluent Limitations and Monitoring Requirements (Outfall 012C) (15A NCAC 02B .0400 et seq.,
020 .0500 et seq.)
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee
is authorized to discharge from Outfall 012C. 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
Location' -
Flow
Per discharge event
Estimate
Effluent
Total Suspended Solids
30.0 m /L
100.0 m /L
Per discharge event
Grab
Effluent
Oil and grease
15.0 m /L
20.0 m >/ L
Per discharge event
Grab
Effluent
H
6.0 to 9.0 S.U.
Per discharge event
Grab
Effluent
Ammonia3
1.0 m •/ L
5.0 m /L
Per discharge event
Grab
Effluent
Total Arsenic, pg/L
Per discharge event
Grab
Effluent
Total Mercury, ng/L
Per discharge event
Grab
Effluent
Total Selenium, µg/ L
Per discharge event
Grab
Effluent
Nitrate/Nitrite as N,
m /L
Per discharge event
Grab
Effluent
Total Copper, pg/ L
Per discharge event
Grab
Effluent
Total Iron, pg/L
Per discharge event
I Grab
Effluent
Notes
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (29).
2. Samples taken in compliance with the monitoring requirements listed above shall be taken after
the treatment system and prior to mixing with other sources of wastewater.
3. Ammonia limit and monitoring is only applicable in the event of an emergency release of
anhydrous ammonia during the time the released waters are discharged at the same time as the
emergency overflow.
Within 180 days of the first discharge event the permittee shall submit Items V and VI of NPDES
application Form 2C.
All flows shall be reported (in monthly I)MRs. If no flow occurs during a given month, the words "no flow"
should be clearly written on the front of the DMR. All samples shall be of a representaticc discharge.
Page 20 of 29

Permit NC0003425
A. (14) Acute Toxicity Testing PASS/FAIL Permit Limit Outfalis 001 and 003 [15A NCAC 02B .0200 et
seq.]
The Permittee shall conduct acute toxicity tests on a quarterl basis using protocols defined in the North
Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A
Single Effluent Concentration' (Revised -December 2010 or subsequent versions). The monitoring shall be
performed as a Fathead Minnow (Pimepholes 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). The tests will be performed during the months of March, June, September and
December. These months signify the first month of each three month toxicity testing quarter assigned to
the facility. Effluent sampling for this testing must be obtained during representative effluent discharge
and shall be performed at the NPDES permitted final effluent discharge below all treatment processes.
The parameter code for Pimephales promelas is TGE6C. 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, DW R Form AT-2 (original) is to be sent to
the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/ Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Or, results can be sent to the email: ATForms.ATB@ncdenceov.
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section 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 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 Water Sciences Section at the address cited
above.
Should the Permittee fail to monitor during a month in which toxicity monitoring is required, then
monthly monitoring will begin immediately. Upon submission of a valid test, 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 Resources 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.
Page 21 of 29

r�sla�cK�uz�xiy�.�
A. (15) Acute Toxicity Monitoring (ANNUAL) Outfall 006 [15A NCAC 02B .0200 et seq.]
The permittee shall conduct annual acute toxicity tests using protocols defined as definitive in EPA
Document EPA-821-R-02-012 entitled "Methods for Measuring the Acute Toxicity of Effluents and
Receiving Waters 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 during representative effluent discharge and shall be performed at the NPDES permitted final
effluent discharge below all waste treatment processes.
The parameter code for Pimephales prornelns is TAA6C. 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, DWR Form AT-1 (original) is to be sent to
the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Or, results can be sent to the email: ATForms.ATBCsncdenr.gov.
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section 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 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 Water Sciences Section at the address cited
above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Resources 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.
A. (16) Intake Screen Backwash Condition [NCGS 143-215.1(b)l
Continued intake screen backwash discharge is permitted without limitations or monitoring requirements.
A. (17) Temperature Requirements (Outfall 003 Mixing Zone) [NCGS 143-215.1(b)]
Water quality standards for temperature for lower piedmont waters (3Z' C) will not apply within a
mixing zone, which shall include the North Hvco arm downstream of NC Highway 57, the main
body of Hyco Reservoir 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 Armor the
first finger arms on the west side of the reservoir lying upstream of the dam. Water within the main
Page 22 of 29

Permit NC0003425
lake and the afterbav 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. Water discharged
from the afterbay shall comply with the temperature standard. Temperature readings from the
afterbay shall be obtained from the existing USGS station (02077303).
b. 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.
c. Temperature shall be measured daily. In case where the permittee experiences equipment
problems and is unable to obtain daily temperatures from the monitoring station temperature
monitoring must be reestablished within five working days.
d. Temperature increases shall be determined as the increase in temperature above the background
level. Background level shall be defined as the temperature measured at the confluence of the two
southern finger arms on the north side of the lake (Lat. 36.5111, Long 79.06629). The downstream
compliance point shall be defined as the afterbay discharge.
e. A summary of the temperature monitoring results at all sampling locations as established in the
biological monitoring program for Hyco Reservoir and condition A.(4) shall be submitted to the
Division with the annual Biological Monitoring Report due by July 31 of the following year.
A. (18) Instream Monitoring [NCGS 143-215.1(b)]
In accordance with the previously submitted biological monitoring program (as approved by the Director
of the Division, and as it may be amended), the Permittee shall submit results of biological studies and
monitoring programs by July 31 of the following year. The facility shall conduct monthly in -stream
monitoring at Station F2 (formerly 6B) for total arsenic, total selenium, total mercury, total chromium,
dissolved lead, dissolved cadmium, dissolved copper, dissolved zinc, total bromide, total hardness (as
C,aCO3), turbidity, and total dissolved solids (TDS). The monitoring results shall be reported on the facility's
Discharge Monitoring Reports and included with the NPDES permit renewal application.
�Jr Tissue Monitoring Near Ash Pond DischargeA NCGS 143-215.3 (a) (2)]
The facility shall conduct fish tissue monitoring annually and submit the results with the NPDES permit
renewal application. The objective of this monitoring is to evaluate potential uptake of pollutants by fish
tissue near the ash pond discharge. The parameters analyzed in fish tissue shall include arsenic, selenium,
and mercurv. The monitoring shall be conducted in accordance with the sampling plan approved by the
Division. The plan should be submitted to the Division within 180 days from the effective date of the permit.
Upon approval, the plan becomes an enforceable part of the permit.
Copies of all the study plans, studv results, and any other applicable materials should be submitted to
Electronic Version Only (PDF and CD)
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Electronic Version (PDF and CD) and Hard Copy
Division of Water Resources
Water Science Section
1621 Mail Service Center
Raleigh, NC 27699-1621
A. (20) Applicable State Law (State Enforceable Only) [NCGS 143-215.1(b)]
This facility shall meet the General Statute requirements under NCGS § 130A-309.200 et seq. This permit
may be reopened to include new requirements imposed under these Statutes.
Page 23 of 29

0
Permit NC0003425
A. (21) Limitations Reopener [NCGS 143-215.1(b)]
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. (22) Domestic Wastewater Treatment Plant [NCGS 143-215.1(b)]
The penmittee shall at all times properly operate and maintain the domestic wastewater treatment plant to
meet secondary standards as specified for internal outfall 008.
A. (23) Bioreactor Condition [NCGS 143-215.1(b)]
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.
A. (24) Ash Pond Closure [NCGS 143-215.1(b)]
The facility shall prepare an Ash Ponds Closure Plan. T�is Plan shall be submitted to the Division one month
prior to the closure of ash ponds.
A. (25) Clean Water Act Section 316(b) [40 CFR 125.95]
The permittee shall comply with the Cooling Water Intake Structure Rule per 40 CFR 125.95. The
permittee shall submit the following information as required in 122.21 (except 122.21 (r)(6)) by May 31,
2023.
§122.21(r)(2) Source Water Physical Data
§/22.21(r)(3) Cooling Water Intake Structure Data
§122.21(r)(4) Source Water Baseline Biological Characterization Data
§/22.21(r)(5) Cooling Water System Data
§122.21(r)(6) Chosen Method(s) of Compliance with the Impingement Mortality Standard (the chosen
method will be defined after the site -specific BTA determination is made by the Director)
§122.21(r)(7) Entrainment Performance Studies
§122.21(r)(8) Operational Status
§122.21(r)(9) Entrainment Characterization Study
§122.21(r)(10) Comprehensive Technical Feasibility and Cost Evaluation Study
§122.21(r)(11) Benefits Valuation Study
§122.21(r)(12) Non -water Quality and Other Environmental Impacts Study
Based on the director's selection of entrainment, this permit may be reopened to establish a schedule to
implement the selected technology.
Copies of all the study plans, study results, and any other applicable materials should be submitted to:
Page 24 of 29

r
A
Electronic Version Only (PDF and CD)
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
2. Electronic Version (PDF and CD) and Hard Copy
Division of Water Resources
Water Sciences Section
1623 Mail Service Center
Raleigh, NC 27699-1623
Permit NC0003425
Based on 40 CFR 125.92 (c) and 40 CFR 125.94 (c) & (d), the Director has determined that operating and
maintaining the existing closed -cycle recirculating system meets the requirements for a provisional BTA.
The final determination will be made upon review of the materials submitted by the permittee. This
determination does not preclude the Division from implementing additional requirements to minimize
impingement and entrainment of the aquatic organisms based on the results of the studies.
The facility shall continue to demonstrate that make-up %cater erithdrm ols attributed speeificalh to the
cooling Portion of the cooling system have been minimized.
Nothing in this permit authorizes take for the purposes of a facility's compliance with the Endangered
Species Act.
A. (26) Structural Integrity Inspections of Ash Pond Dam [15A NCAC 02K.02081
The facility shall meet the dam design and dam safety requirements per 15A NCAC 2K.
A. (27) Biocide Condition [NCGS 143-215.1(b)]
The permittee shall not use any biocides except those approved in conjunction with the permit
application. The permittee shall notify the Director in writing not later than ninety (90) days prior to
instituting use of any additional biocide used in cooling systems which may be toxic to aquatic life other
than those previously reported to the Division of Water Resources. Such notification shall include
completion of Biocide Worksheet Form 101 and a snap locating the discharge point and receiving stream.
Completion of Biocide Worksheet Form 101 is not necessary for those outfalls containing toxicity testing.
Division approval is not necessary for the introduction of new biocides into outfalls currently tested for
whole effluent toxicity.
A. (28) Compliance Boundary [15A NCAC 02L.01071
The compliance boundary for the disposal system shall be specified in accordance with 15A NCAC 02L
.0107(a) or (b) dependent upon the date permitted. An exceedance of groundwater standards at or beyond
the compliance boundary is subject to remediation action according to 15A NCAC 02L .0106(c), (d), or (e)
as well as enforcement actions in accordance with North Carolina General Statute 143-215.6A through 143-
215.6C.
The compliance boundary maps for this facility are incorporated herein and attached hereto as
Attachments A and B. Attachment A includes the temporary compliance boundary around the East Ash
Basin Extension. Attachment B is the future compliance boundary effective upon completion of the
removal of coal ash from the East Ash Basin Extension.
Page 25 of 29

Permit NCO003425
A. (29) Electronic Reporting of Discharge Monitoring Reports [G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December 21,
2015.
NOTE: This special condition supplements or supersedes the following sections within Part If of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D (2.) and Section E. (5.1 (all
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the Internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative
forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address
above. See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Starting on December 21, 2025, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting' section below).
Page 26 of 29

r r
Permit NC0003425
2. Electronic Submissions
In accordance with 40 CFR 122.41(I)(9), the permittee must identify the initial recipient at the time of
each electronic submission. The permittee should use the EPA's website resources to identify the
initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity
for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each
type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at: http://www2.epa.gov/compliance/final-national-pollutant-
discharge-elimination-system-npdes-electronic-reporting rule.
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first subunit an electronic reporting waiver request to the
Division. Requests for temporary electronic reporting waivers must be submitted in writing to the
Division for written approval at least sixty (60) days prior to the date the facility would be required
under this permit to begin submitting monitoring data and reports. The duration of a temporary
waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data and reports
shall be submitted electronically to the Division unless the permittee re -applies for and is granted a
new temporary electronic reporting waiver by the Division. Approved electronic reporting waivers
are not transferrable. Only permittees with an approved reporting waiver request may submit
monitoring data and reports on paper to the Division for the period that the approved reporting
waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deg.nc.gov/about/divisioiis/water-resOLirces/edmr
4. Sienatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part 11,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part 11, Section
B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting
purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following
web page.
littp://deq.nc.gov/abt)ut/ciix,isions/water-resources/edmr
Page 27 of 29

Permit NC0003425
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.221. NO OTHER STATEMENTS OF CERTIFICATION WILL
BE ACCEPTED:
"I certifil, under penalty of law, that this donnnent 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 infimrnation submitted. Based or my inquiry of the person or persons who manage the system, or those
persons directly responsible for gathering the informntior, the infornmtiot submitted is, to the best of nnl
knowledge and belief, true, accurate, and complete. lain aware that there are significant penalties jbr submitting
false information, including the possibility offines and imprisonment for knowing violations."
5- Records Retention [Supplements Section D. (631
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
This period may be extended by request of the Director at any time [40 CFR 122.411.
A. (30) Additional Conditions And Definitions [NCGS 143-215.3 (a) (2) and NCGS 143-215.661
1. EPA methods 200.7 or 200.8 (or the most current versions) shall be used for analyses of all metals
except for total mercury (EPA Method 1631E).
2. All effluent samples for all external outfalls shall be taken at the most accessible location after the
final treatment but prior to discharge to waters of the U.S. (40 CFR 122.410)).
3. The term lot(, voltnne waste sources mean wastewater from all sources except those for which
specific limitations are otherwise established in this part (40 CFR 423.11 (b)).
4. The term chemical petal cleaning waste means anv wastewater resulting from cleaning any metal
process equipment with chemical compounds, including, but not limited to, boiler tube cleaning
(40 CFR 423.11 (c)).
5. The term metal cleaning waste means any wastewater resulting from cleaning [with or without
chemical cleaning compounds] any metal process equipment including, but not limited to, boiler
tube cleaning, boiler fireside cleaning, and air preheater cleaning (40 CFR 423.11 (d)).
6. For all outfalls where the Flow measurement is to be "estimated" the estimate can be done by
using calibrated V-notch weir, stop -watch and graduated cylinder, or other method approved by
the Division.
7. The term "FGD wet scrubber wastewater" means wastewater resulting from the use of the Flue -gas
desulfurization wet scrubber.
8. There shall be no discharge of polychlorinated biphenyl compounds.
9. The permittee shall report the presence of cenospheres observed in any samples on the DMRs in
the continent section.
10. The applicant is permitted to discharge chemical metal cleaning wastes to the Lined Retention
Basin.
11. Nothing contained in this permit shall be construed as a waiver by the permittee of any right to a
hearing it may have pursuant to State or Federal laws and regulations.
Page 28 of 29

. d �
Permit NC0003425
� � InlUllill
n Outft11010
4
MANIY
Duke Energy Progress— Roxboro Steam Station, Person County Facility Location
Receiving Stream: Hyco Reservoir Stream Class: WS-V, B .k
Sub -Basin: 03-02-05 State Grid: B22NE/Olive Hill
Drainage Basin: Roanoke River Basin
Outfall 001: Latitude 36' 29' 1.25" Longitude 79' 3' 23.0"
Outfall 003: Latitude 36' 28' 48" Longitude 79' 05' 11"
Outfall 006: Latitude 36' 19' 13" Longitude 79.04' 41" NPDES Permit N00003425
Outfall 012C: Latitude: 36` 129 14" Longitude 79' 04' 55"
Page 29 of 29

DocuSign Envelope ID: F5C38DD9-2527-4883-Bt72-BA5CEOFEOC28
ROY COOPER
C.ovnnrc
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Dimcror
Jessica Bednarcik
Duke Energy Progress LLC
526 S. Church Street-Ec l3k
Charlotte, NC 28201-1002
Dear Ms. Bednarcik:
NORTH CAROLINA
Environmental Quality
November 16, 2022
Subject: NPDES Compliance Evaluation Inspection
Roxboro Steam Electric Power Plant
NPDES Permit No. NC0003425
Person County
On November 9, 2022, Stephanie Goss, Timothy Clark, and Jim Westcott of the Raleigh Regional Office
(RRO), conducted an inspection at the subject facility. The cooperation of Robert Howard, Kevin
Clayton and Ryan Enoch was appreciated. Findings during the inspection were as follows:
1. The current NPDES permit was issued effective August 1, 2021 and expires on June 30, 2025.
2. The Mayo Steam Electric Generating Plant is classified PC-1 and WW-2 and is permitted to
discharge wastewater from the cooling towers and circulating water system and discharged
directly into Hyco Lake via Outfall 001 and the ash pond via Outfall 002, Outfall 003, Outfall
006 (with wastewater from a variety of sources drained into Internal Outfalls 002, 005, 008, 009
010, 011, 012A, 012B, and 012C).
3. The plant discharges to receiving waters designated as Hyco Lake, classified as Class B, WS-V
waters in the Roanoke River Basin.
4. A review of discharge monitoring report (DMR) data for the period August 2021 through October
2022 showed all required monitoring was performed and that the facility complied with all permit
limits.
5. A cursory review of laboratory and DMR data for December 2021 and April 2022 showed
consistent reporting of results.
6. A cursory review of calibration logs showed acceptable calibration for the on -site parameters pH,
turbidity, and temperature.
All domestic wastewater is treated by a package plant with chlorine tablet disinfection. The
effluent from the package plant discharges to Hyco Reservoir via Outfall 003.
North Carolina Deparmoent of Environmental Quality I Division of Water Respaces
Raleigh Regional Office 1 3800 Barren Drive I Raleigh, North Carolina 27609
919 791 42M

DocuSign Envelope IDF5C38DD9-2527-4883-B172-BA5CEOFEOC26
Page 2 of 2
8. The inspector observed all the outfalls except Internal Outfall 012A because it has not been built
at the time of the inspection. No issues were found.
9. The ORC maintains a daily logbook which contains data such as the package plant observations.
10. The right of way to the outfalls were well maintained. No visible impacts were observed to Hyco
Reservoir at Outfall 002 and 003.
The facility is compliant with the NPDES permit conditions as a result of this inspection. If you have
questions concerting this report, please contact Stephanie Goss at 919-791-4256 or
[e-mail].
Sincerely,
�noawgnr a
vautsSa �.
Bz9taee�eazt�...
Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
cc: Laserfiche
D_E Q North Cstoluta Depmnient ofFnvirwmeriul Quality I Division of Weer Resc uces
Raleigh Regional Office 1 3800 Beim Dnve I Raleigh. North Carol. 27609
r�� 9197914200

DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CEOFEOC26
United States Environmental Protection Agency
Form Approved.
EPA Washington, D C 20460
OMB No. 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A. National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 Iti ) 2 IS I 3 I N00003425 (11 12 22/11/09 17 18n 191 c I 201 1
211111II IIIIIIlUll 111 llll l l llllI IIIII1U1II G6
Inspection Work Days Facility Self -Monitoring Evaluation Rating 81 QA ----Reserved ----
67I J 70LJI 71 I 72 Lti I 73174 75 LL L _LJJ80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES oermit Number)
10:OOAM 22/11/09
21/08/01
Roxboro Steam Electric Power Plant
Exit Time/Date
Permit Expiration Date
1700 Dunnaway Rd
Semora INC 27343
12:30PM 22/11/09
25/06/30
Names) of Onsite Representative(s)Mtles(s)/Phone and Fax Number(s)
Other Facility Data
///
Kevin Danny Clayton/ORC/336-330-20551
Name, Address of Responsible Official/Ttle/Phone and Fax Number
Contacted
William J Thacker, 1700 Dunnaway Rd Seri INC 27343/Plant
Manager/336-597-6101/ No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit 0 Operations & Maintenar Records/Reports Self -Monitoring Progran
Facility Site Review 0 Effluent/Receiving Wate Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signatum(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
o«aage.d ay:
Stephanie Goss ���• DWR/RRO WQ/919-791-4200/
��
Timothy Clark St�'"^^"^aL [�oSS DWR/RRO WQ/919-791-4234/ 11/16/2022
James Westco8 DWR/RRO WQ/919-791-4247/
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
11/17/2022
EM4Dy:
Sa f. kaiawa
Ern Wo inek, 0 STRev'9-94jPrevious editions are obsolete.
Page#

DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CEOFEOC26
NPOES yr/mo/day Inspection Type
NC0003425 I11 1 22/11/09 17 JB L_I
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
Page#

DocuSign Envelope ID: F5C38DD9-2527-4883-B172-BA5CEOFEOC26
Permit: NC0003425 Owner - Facility: Roxboro Steam Electric Power Plant
Inspection Date: 11/092022 Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑ ■
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Permit
Yes No
NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
❑
❑
M
❑
application?
Is the facility as described in the permit?
■
❑
❑
❑
# Are there any special conditions for the permit?
❑
❑
■
❑
Is access to the plant site restricted to the general public?
■
❑
❑
❑
Is the inspector granted access to all areas for inspection?
■
❑
❑
❑
Comment
Record Keeping
Yes
No
NA NE
Are records kept and maintained as required by the permit?
■
❑
❑
❑
Is all required information readily available, complete and current?
■
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)?
■
❑
❑
❑
Are analytical results consistent with data reported on DMRs?
■
❑
❑
❑
Is the chain -of -custody complete?
M
❑
❑
❑
Dates, times and location of sampling
❑
Name of individual performing the sampling
❑
Results of analysis and calibration
❑
Dates of analysis
❑
Name of person performing analyses
❑
Transported COCs
❑
Are DMRs complete: do they include all permit parameters?
■
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
❑
❑
0
❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 2417 with a certified
❑
❑
■
❑
operator on each shift?
Is the ORC visitation log available and current?
M
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
■
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility
■
❑
❑
❑
classification?
Page# 3

DocuSlgn Envelope ID: FSC38DD9-2527♦883-8172-BA5CEOFEOC28
Permit: NC0003425 Owner - Facility:
Inspection Date: 11/09/2022 Inspection Type:
Roxboro Steam Electric Power Plant
Compliance Evaluation
Record Keeoina
Yes
No
NA NE
Is a copy of the current NPDES permit available on site?
■
❑
❑ ❑
Facility has copy of previous year's Annual Report on file for review?
❑
❑
0 ❑
Comment:
Effluent Pioe
Yes
No
NA NE
Is right of way to the outfall properly maintained?
■
❑
❑ ❑
Are the receiving water free of foam other than trace amounts and other debris?
■
❑
❑ ❑
If effluent (diffuser pipes are required) are they operating properly?
❑
❑
■ ❑
Comment
Bar Screens
Yes
No
NA NE
Type of bar screen
a.Manual
❑
b.Mechanical
❑
Are the bars adequately screening debris?
■
❑
❑
❑
Is the screen free of excessive debris?
■
❑
❑
❑
Is disposal of screening in compliance?
■
❑
❑
❑
Is the unit in good condition?
■
❑
❑
❑
Comment:
Secondary Clarifier
Yes
No
NA NE
Is the clarifier free of black and odorous wastewater?
■
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
■
❑
❑
❑
Are weirs level?
■
❑
❑
❑
Is the site free of weir blockage?
■
❑
❑
❑
Is the site free of evidence of short-circuiting?
❑
❑
❑
Is scum removal adequate?
■
❑
❑
❑
Is the site free of excessive floating sludge?
■
❑
❑
❑
Is the drive unit operational?
■
❑
❑
❑
Is the return rate acceptable (low turbulence)?
■
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
■
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately '% of the sidewall depth)
❑
❑
❑
■
Comment:
Page# 4

DocuSign Envelope ID: F5C38DD9-25274883-B172-BA5CEOFEOC26
Permit: NC0003426 Owner - Facility:
Roxboro Steam Electric Power Plant
Inspection Date: 11/09/2022 Inspection Type:
Compliance Evaluation
Secondary Clarifier
Yes
No
NA
NE
Disinfection -Tablet
Yes
No
NA
NE
Are tablet chlorinators operational?
N
❑
❑
❑
Are the tablets the proper size and type?
0
❑
❑
❑
Number of tubes in use?
1
Is the level of chlorine residual acceptable?
❑
❑
❑
0
Is the contact chamber free of growth, or sludge buildup?
■
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
❑
❑
0
❑
Comment
Laboratory
Yes
No
NA
NE
Are field parameters performed by certified personnel or laboratory?
■
❑
❑
❑
Are all other parameters(excluding field parameters) performed by a certified lab?
■
❑
❑
❑
# Is the facility using a contract lab?
N
❑
❑
❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0
■
❑
❑
❑
degrees Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
❑
❑
■
❑
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
❑
❑
■
❑
Comment:
Effluent Sampling
Yes
No
NA
NE
Is composite sampling flow proportional?
❑
❑
E
❑
Is sample collected below all treatment units?
0
❑
❑
❑
Is proper volume collected?
❑
❑
❑
Is the tubing clean?
❑
❑
❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0
0
❑
❑
❑
degrees Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type ■ ❑ ❑ ❑
representative)?
Comment:
Aeration Basins Yes No NA NE
Mode of operation
Type of aeration system
Page# 5

DocuStgn Envelope ID: F5C38DD9-2527-4883-6172-BA5CEOFEOC26
Permit: NC0003425 Owner - Facility: Roxboro Steam Electric Power Plant
Inspection Date: 11/09/2022 Inspection Type: Compliance Evaluation
Aeration Basins
Yes
No
NA
NE
Is the basin free of dead spots?
M
❑
❑
❑
Are surface aerators and mixers operational?
0
❑
❑
❑
Are the diffusers operational?
M
❑
❑
❑
Is the foam the proper color for the treatment process?
0
❑
❑
❑
Does the foam cover less than 25% of the basin's surface?
0
❑
❑
❑
Is the DO level acceptable?
❑
❑
❑
Is the DO level acceptable?(1.0 to 3.0 mg/1)
❑
❑
❑
Comment:
Page# 6

n Agenda — Duke Energy Progress LLC: Roxboro Steam Plant, NC0003425, 11/9/22
Opening Conference J d`rr"" �`D 'd (�i�
Attendees: LLoTrrOttey Rpbz& hD,.JcrdFAj
Rya 6^Pcn , LAb s.-F"J-A-
• Purpose of inspection, CEI
• Flow of inspection, DMR's, Lab, Facility
Permit Requirements
�• Permit Status -Effective on 08/1/21; expires on 6/30/25
• Classification: WW-2, PC-1
• Overview of plant layout (treatment components)
Paper Trail — Data Comparison (Lab Data jo DMRs)
• Review period: 8/21 to present ✓n '' �� ���r3 � ('r-4 ar
• Selected DMRs 2 4/22 ,� PLO( ( — � '� � `t
• Violations: none / L4112
• Fish Tissue Monitoring annually (As, Se & Hg):
• Acute Toxicity Testing 001 & 003 (quarterly): ✓
• Acute Toxicity Testing 006 (annually):
Laboratory
• Field Parameters — pH, temperature and turbidity
• Meter calibration logs and standards: IDS tad .
• Calibration frequency- ( Al ') 4or AvA, d,� d �K
• By who? f( Soli W✓o
• Analytical bench sheets: (mksa
• Thermometer calibration date(s) & by who: ,�(R
Re uk-i *'-> 4AZ, c'�,ofej
100-)K +- V-� t� tom-,
Treatment Components
• ORC logbook: ,jjoq/
• Outfall 001: �OJ 3p '
• Outfall002: Mh wmn
OutfaII 003: 6c r—I S oU r� „sQti,l� � C �s«✓f�ilL
J UU
• internal Outfall 005:
• Outfa11006
(-I,n b* P;rr_

•
Inspection Agenda — Duke Energy Progress LLC: Roxboro Steam Plant, NC0003425, 11/9/22
• Internal Outfall 008: An 0lcq-�2 ple. 4- �
• Internal Outfall009: �rwt.)uk
• Internal Outfall 010: Or YM •
• Internal Outfall011: T%Ar-V, +,, (0.,N(
• Internal Outfall012A: 0lpf -nD+ bw. Ik
dC.,d�z
• Internal Outfa11012B: C � ��r Pard
• Outfall 012C: D I d (t �W— p!L
J u wrF�
Package plant (domestic wastewater):
var4 n Chook.- ic, d-e.c"4- Q&cAim ba Sin � (1� roar•, . ck r�
(C`IG-�i � w bG ,n �lyl+►'>,.11 � �►"'�,r►'13-c.I' — �4� �sh.r� cMt-� .
Flow measurement
ent
• Meter calibration date?
• By who?
Sample Collection
• Composite sampler — programsetup
• Sample storage temperature
• Tubing appearance
• Sample handling after collection
• Stream sample locations
Receiving Waters
• Post aeration N) Pf
• Appearance LMM 3
Closing Conference
• Findings Lxo lra cc�. d
• Expectations
� .l;a re.9,111q�r iu�J j_ dal —) QIMJ CGl c. er'or,
2 1 F , c e

DocuSign Envelope ID: D8DOA05A-7AF1482A-8AO6-BA5476502AC5
ROY COOPER
Gowrnm
ELIZABETH S. RISER
Se,remrp
S. DANIEL SMITH
Director
Jessica Bednarcik
Duke Energy Progress, LLC
526 S Church St. — Ec13k
Charlotte, NC 28201-1002
Subject:
Dear Ms. Bednarcik:
NORTH CAROUNA
Environmental Quality
September9, 2021
Compliance Evaluation Inspection
Duke Energy — Roxboro Steam Plant
NPDES Permit No. NC0003425
Person County
On August 18, 2021 Jason Robinson of the Raleigh Regional Office (RRO) conducted a compliance evaluation
inspection of the Duke Energy Roxboro Steam Plant. The assistance provided by Mr. Kevin Clayton (Operator
in Responsible Charge (ORC)), Ms. Amber Sarver (Chemistry & Process Safety Management Supervisor &
bORC) and Lori Tollie (Permitting and Compliance) was appreciated.
• The facility is located at 1700 Dunnaway Road in Semora, North Carolina.
• NPDES permit NC0003425 was modified and issued for the treatment facilities on August 1, 2021 and
expires on June 30, 2025.
• The facility has both Grade I Physical/Chemical Water Pollution Control Systems that treat industrial
wastewater (numerous Outfalls) and a Grade II Biological Water Pollution Control system with an as -
built and permitted flow of 0.025 MGD that treats domestic wastewater (Outfall 008).
• The permit authorizes the facility to discharge the treated wastewater through Outfalls 001, 003 and
006, with accompanying monitoring requirements and limits, to receiving waters designated as Hyco
Lake, a waterbody classified as WS-V and B waters within the Roanoke River Basin. The permit also
authorizes the discharge of numerous internal outfalls, with accompanying monitoring requirements
and limits.
Finding during the compliance inspection were as follows:
1. The operator's on -site log and supporting documentation was reviewed and found to be complete.
The Roxboro Stem Plant's on -site lab is field certified for and self -reports monitoring data for the
following parameters (Certification Number 5080): pH, Temperature and Turbidity. Meter calibration
logs were reviewed and found to be complete, buffers were within expiration dates, and refrigerator
temperature and log was within range. Samples are transported offsite to the Duke Analytical Lab
(certification number 248) to analyze additional parameters. A few parameters are sent to be
analyzed by a commercial lab.
3. Discharge Monitoring Reports for September 2020 and February 2021 were reviewed and compared
R leig Cargioa Deparimem ,9Ery mn Dr.Vc Quality . arch nol inaMenourcrs
Releiyh Regional Office � 3if00 Barrett Drive I Raleigh. North Carolina tIh09
9197914200

DocuSign Envelope ID: DBDOA05A-7AF7-482A-8A06-SA5476502AC5
to laboratory bench sheets. No discrepancies were noted. Lab results, chain of custody records, and
bench sheets were available for review and found to be complete.
4. All outfalls listed in the permit were observed during the inspection. No issues were found.
5. All domestic wastewater is treated by a package treatment plant with chorine disinfection (Internal
Outfall 008). The effluent from the package plant goes to the low volume wastewater treatment
system. No issues were found.
This facility was found to be compliant with NPDES permit conditions as a result of this inspection. If you have
any questions regarding the attached reports or any of the findings, please contact Jason Robinson at
Jason.t.robinson@ ncden r.gov).
Sincerely,
EDocuSi9eed by:
/alnl SSa `'. halwd
B2916E6A832144F-
Vanessa Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
ATTACHMENTS
Compliance Inspection Report
Cc: DWR Laserfiche
Raleigh Regional Office w/attachment
[e-mail]
[e-mail]
[e-mail]
[e-mail]

r
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
r
Paul Draovitch, Senior VP
Duke Energy Progress, LLC
526 S Church Street — Ec3xp
Charlotte, NC 28202
NORTH CAROLINA
Envlronmenwi Qu•aty
February 25, 2019
Subject: Compliance Evaluation Inspection
Roxboro Steam Electric Power Plant
NPDES Permit NC0003425
Person County
Dear Mr. Draovitch:
On Tuesday, February 19, 2019, Vanessa Manuel of the Raleigh Regional Office conducted a
compliance evaluation inspection of the treatment facilities located at the Roxboro Steam
Electric Power Plant. The purpose of this inspection was to ensure compliance with the subject
NPDES permit. During the inspection, the presence and cooperation of Ryan Enoch, Operator in
Responsible Charge (ORC), Amber Sarver and Robert Howard, Backup ORCs, and Lori Tollie
were helpful and appreciated.
The Roxboro Steam Electric Power Plant is located at 1700 Dunaway Road in Semora, North
Carolina. The facility has both a Grade II Biological Water Pollution Control System with an as -
built and permitted flow of 0.015 MGD that treats domestic wastewater, and a Grade I
Physical/Chemical Water Pollution Control System that treats industrial wastewater. Through
NPDES permit NC0003425, Duke Energy Progress, hereinafter referred to as Duke Energy, is
authorized to discharge the treated wastewater through outfall 003 andto receiving waters
designated as Hyco Lake, a waterbody classified as WS-V an B waters ' the Roanoke
River Basin. a
This NPDES compliance evaluation inspection consisted of the following: ©Q 1 So
• Review of the NPDES permit; ��^h ,� \
• Review of the owner/facility information; a' �o�Mt j
• Review of December 2016 — November 2018 monitoring data;
• Review of December 2016 — November 2018 compliance history;
• On -site inspection of the laboratory and wastewater treatment units; and
• On -site inspection of the discharge outfalls.
��■ North Carolina Department of Environmental Quality I Division of Water Resources
Raleigh Regional Office 13800 Barrett Drive I Raleiqh. North Carolina 27609

r r
Duke Energy Progress, NPDES Permit NC0003425 Page 2 of 3
February 25, 2019
Findings during the pre -inspection file review were as follows:
1. The current NPDES permit was issued effective May 1, 2007, modified effective June 10,
2009, and expired March 31, 2012. On September 28, 2011, the Division received Duke
Energy's permit renewal application for the Roxboro Steam Electric Power Plant. The
Division is in the process of renewing this NPDES permit.
2. As listed in the subject permit, the treatment systems include the Ash Pond Treatment
System (Internal Outfall 002), Heated Water Discharge Canal System (Outfall 003), Cooling
Tower Blowdown System (Internal Outfall 005), Coal Pile Runoff Treatment System
(Outfall 006), Domestic Wastewater Treatment System (Internal Outfall 008), Chemical
Metal Cleaning Treatment System (Internal Outfall 009), and Flue Gas Desulfurization
Treatment System (Internal Outfall 010). 11 (-VK a(aJr m,) 1zk4 IZIS 4 lZ(.
3. Beginning December 21, 2016, EPA's NPDES Electronic Reporting Rule requires permittees
to submit their discharge monitoring reports (DMRs) electronically, instead of on paper.
Duke Energy has been using the Division's eDMR system to electronically report the subject
facility's monitoring data beginning with its November 2016 DMR. To learn more about the
eDMR system, please visit the Division's eDMR website at
https://deg.nc.gov/about/divisions/water-resources/edmr.
4. For the review period December 2016 through November 2018, the following violation was
detected: Total Suspended Solids daily maximum limit exceeded on October 10, 2018. The
Division issued a Notice of Violation for this violation. No penalty assessments have been
issued during the period of review. For the 2-year period ending November 2018, Duke
Energy has been compliant with its Whole Effluent Toxicity limit and monitoring
requirements.
Findings during the inspection were as follows: �0 W
5. The operator's log and supporting analytical documentation were consistent and up to date.
6. The Roxboro Steam Electric Power Plant on -site laboratory is field certified for and self -
reports monitoring data for the following parameters (certification number 5080): pH and
temperature. Duke Energy uses its off -site environmental laboratory, Duke Analytical Lab 4, ► p�
�rC� ' cation number 248), to analyze the remaining parameters required by the permit. b r
Samples analyzed off -site are stored in the sample storage refrigerator until transported off -
site. The inspector observed the temperature of the refrigerator at 3.1 degrees Celsius, which
is in compliance with the requirements of proper temperature for sample storage. The
inspector reviewed the sample storage temperature logs, pH meter calibration logs and
standards, and found these items to be compliant with record -keeping requirements. The in-
house thermometers are NIST certified and replaced annually.
7. The inspector compared the February 2018 DMR data against the labs' analytical results. No
discrepancies were noted. A review of the associated chain -of -custody forms showed
documentation complete and compliant with record -keeping requirements.

•' C C
Duke Energy Progress, NPDES Permit NC0003425 Page 3 of 3
February 25,2019
8. The inspector observed all outfalls during the inspection. For Outfall 003, the NPDES permit
requires the permittee to perform the effluent sampling on the discharge canal at the point of
discharge into Hyco Lake. Duke Energy has installed a fence that spans the length of the
discharge canal and separates the Heated Water Discharge Canal System from Hyco Lake.
The operators monitor temperature continuously from a thermometer mounted on the fence
and submerged into the effluent discharge. Samples for the remaining effluent parameters
are taken from the dock over Hyco Lake approximately 15-feet from the effluent discharge,
which may not meet the sampling location requirements of the NPDES permit. As the
inspector discussed with Lori Tollie, Duke Energy should contact the Division's NPDES
Permitting Unit and discuss the possibility of changing the sampling location for Outfall
003. No other compliance issues were observed at the time of the inspection.
9. All domestic wastewater is treated by a package treatment plant with chlorine tablet
disinfection. The effluent from the package plant goes to the Ash Pond Treatment System.
No issues of concern were observed with the package treatment plant.
If you have questions or comments about the inspection, this report or the requirements to take
corrective action (if applicable), please contact Vanessa Manuel at 919-7914255 or via email at
Vanessa.Manuel a ncdenr.eov.
Sincerely,
Rick Bolich, L.G., Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Attachments: EPA Water Compliance Inspection Report
Cc: RRO/SWP Files
Laserfiche

A
United States Environmental Protection Agency
Form Approved.
EPA Washington, D.C. 20460
OMB No 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 E 2 15 1 3 I NC0003425 I11 12 I 19.02 tc I17 18 Li 19 I c I 201 I
66
211 I11 I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I II
Inspection Work Days Facility Self-Monitonng Evaluabon Rating B1 CA Reserved
67LI 70 71 LJ72 LuJ 73I I 74 75I I I 80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPOES permit Number)
10'.05AM 19/02/19
09/07/01
Roxboro Steam Electric Power Plant
1700 Dunnaway Rd
Exit TimelDate
Permit Expiration Date
Semora NC 27343
01'05PM 19/02/19
12/03/31
Name(s) of Onsite Represemabve(s)/Tities(s)/Phone and Fax Number(s)
Other Facility Data
Ill
Ryan Stephen Enoch/ORC/336-598-7609/
Name, Address of Responsible OlBcialf iBe/Phone and Fax Number
'4-Son fisy'JCT )91� .t )qo-.+ krx—
r Contacted
i451fiemy'matker,1700 Dunnaway Rd Semora NC 27343/Plant
Manager/336-597-6101/ Yes
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit Operations & Maintenance Records/Reports SeN-Monitoring Program
Facility Site Review Efnuent/Receiving Waters Laboratory
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Vanessa E Manuel RRO WO//946 Off 69941—
20 2o19
/V�a a. 9y9-P?/-4-76-6-
Signature of Management 0 A Reviewer Agency/OKce/Phone and Fax Numbers D to
/ /
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.

NPDES yrlmo/dey Inspector, Type
NC0003425 Ill 12 19/02/19 17 18 ICI
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
See attached inspection report.
Page#

r
Permib NC0003425 Owner - Facility: Roxboro Steam Electric Power Plant
Inspection Date: 02JI912019 Inspection Type: Compliance Evaluation
Permit
Yes No
NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
0
❑
❑
❑
application?
Is the facility as described in the permit?
0
❑
❑
❑
# Are there any special conditions for the permit?
0
❑
❑
❑
Is access to the plant site restricted to the general public?
0
❑
❑
❑
Is the inspector granted access to all areas for inspection?
0
❑
❑
❑
Comment: The current NPDES permit expired on March 31, 2012. The Division received the
permittee's renewal application on September 28, 2011.
Record Keeping
Yes
No
NA NE
Are records kept and maintained as required by the permit?
0
❑
❑
❑
Is all required information readily available, complete and current?
M
❑
❑
❑
Are all records maintained for 3 years (lab. reg. required 5 years)?
0
❑
❑
❑
Are analytical results consistent with data reported on DMRs?
M
❑
❑
❑
Is the chain -of -custody complete?
❑
❑
❑
Dates, times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration
Dates of analysis
Name of person performing analyses
Transported COGS
Are DMRS complete: do they include all permit parameters?
0
❑
❑
❑
Has the facility submitted its annual compliance report to users and DWO?
❑
❑
0
❑
(If the facility is = or > 5 MGD permitted flow) Do they operate 2417 with a certified operator
❑
❑
M
❑
on each shift?
Is the ORC visitation log available and current?
M
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
0
❑
❑
❑
Is the backup operator certified at one grade less or greater than the facility classification?
0
❑
❑
❑
Is a copy of the current NPDES permit available on site?
❑
❑
❑
Facility has copy of previous year's Annual Report on file for review?
❑
❑
0
❑
Comment: The Permitted facility is classified as both a Grade II Biological Water Pollution Control
System and a Grade I Physical/Chemical Water Pollution Control System.
The ORC
Ryan
Enoch, Possesses valid certificates for WW-3 and PC-2 treatment systems and each
Backup ORC is certified at the appropriate type and grade for the treatment systems
Page# 3

Permit: NC0003425 Owner-Facilay: Roxboro Steam Electric Power Plant
Inspection Date: 0211912019 Inspection Type: Compliance Evaluation
Laboratory
Yes No NA NE
Are field parameters performed by certified personnel or laboratory?
M
❑
❑
❑
Are all other parameters(excluding field parameters) performed by a certified lab?
0
❑
❑
❑
# Is the facility using a contract lab?
❑
0
❑
❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees
❑
❑
❑
Celsius)?
Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees?
❑
❑
M
❑
Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees?
❑
❑
0
❑
Comment: The on -site lab is field parameter certified (certificate # 5080A and lab Personnel analyzes pH
and temperature. All other required parameters are analyzed by the permittee's off -site lab,
Duke Analytical Lab (certificate # 248).
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? M ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment:
Bar Screens
Type of bar screen
Yes No NA NE
a.Manual
0
b.Mechanical
❑
Are the bars adequately screening debris?
❑
❑
❑
Is the screen free of excessive debris?
0
❑
❑
❑
Is disposal of screening in compliance?
M
❑
❑
❑
Is the unit in good condition?
0
❑
❑
❑
Comment: The Package wastewater treatment
plant is relatively new and treats domestice wastewater.
Secondary Clarifier
Yes No NA NE
Is the clarifier free of black and odorous wastewater?
M
❑
❑
❑
Is the site free of excessive buildup of solids in center well of circular clarifier?
❑
❑
N
❑
Are weirs level?
M
❑
❑
❑
Is the site free of weir blockage?
M
❑
❑
❑
Is the site free of evidence of short-circuiting?
M
❑
❑
❑
Is scum removal adequate?
M
❑
❑
❑
Is the site free of excessive Floating sludge?
M
❑
❑
❑
Page# 4

r
r
PermW NC0003425 Owner - Facility:
Roxboro Steam Electric
Power Plant
Inspection Date: 02/19/2019 Inspection Type:
Compliance Evaluation
Secondary Clarifier
Yes No NA NE
Is the drive unit operational?
0
❑
❑
❑
Is the return rate acceptable (low turbulence)?
0
❑
❑
❑
Is the overflow clear of excessive solids/pin floc?
0
❑
❑
❑
Is the sludge blanket level acceptable? (Approximately % of the sidewall depth)
❑
❑
❑
Comment: Part of the package treatment plant.
Aeration Basins
Yes No NA NE
Mode of operation
Ext. Air
Type of aeration system
Diffused
Is the basin free of dead spots?
a ❑
❑
❑
Are surface aerators and mixers operational?
❑ ❑
E
❑
Are the diffusers operational?
E ❑
❑
❑
Is the foam the proper color for the treatment process?
0 ❑
❑
❑
Does the foam cover less than 25% of the basin's surface?
0 ❑
❑
❑
Is the DO level acceptable?
❑ ❑
❑
E
Is the DO level acceptable?(1.0 to 3.0 mg/1)
❑ ❑
❑
Comment: Part of the package treatment plant
Disinfection -Tablet
Yes No NA NE
Are tablet chlorinators operational?
0
❑
❑
❑
Are the tablets the proper size and type?
0
❑
❑
❑
Number of tubes in use?
1
Is the level of chlorine residual acceptable?
E
❑
❑
❑
Is the contact chamber free of growth, or sludge buildup?
N
❑
❑
❑
Is there chlorine residual prior to de -chlorination?
❑
❑
E
❑
Comment: De -chlorination is not used
Effluent Sampling
Yes No NA NE
Is composite sampling flow proportional?
❑
❑
0
❑
Is sample collected below all treatment units?
E
❑
❑
❑
Is proper volume collected?
❑
❑
❑
Is the tubing clean?
❑
❑
❑
Page# 5

Permit: NC0003425 Owner • Facility: Roxboro Steam Electric Power Plant
Inspection Date: 02/19/2019 Inspection Type: Compliance Evaluation
Effluent Sampling Yes No NA NE
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees 0 ❑ ❑ ❑
Celsius)?
Is the facility sampling performed as required by the permit (frequency, sampling type M ❑ ❑ ❑
representative)?
Comment: For outfall 003 the composite sampler is set up at the time of sample collection to collect a
quarterly toxicity sample. During the inspection, the composite sampler was not set up.
Upstream / Downstream Sampling Yes No NA NE
Is the facility sampling performed as required by the permit (frequency, sampling type, and N ❑ ❑ ❑
sampling location)?
Comment: Stream monitoring for temperature is performed to meet the mixing zone requirements of
Special Condition A. (12).
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained? M ❑ ❑ ❑
Are the receiving water free of foam other than trace amounts and other debris? 0 ❑ ❑ ❑
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ M ❑
Comment: The facility has 2 effluent outfall pipes (003 and 006) and 5 internal outfalls (002 005 008
009 and 010) that eventually discharges to the heated water discharge canal system (outfall
003).
Page# 6

Inspection Agenua — Roxboro Steam Electric Power Plant, NCO003425
2019Feb19
Opgning Conference
JPurpose of inspection
Flow of inspection
V Overview of plant layout (treatment components)
Per it Requirements
/. NPDES WW Contacts Report
✓ • Permit status
�• Electronic reporting —1"eDMR: November2016
• Other
Laboratory
✓ • Analytical lab(s): Duke Analytical Lab (cert. # 248) • jl�,Pid 6n4Sco( SaB�
✓/• Parameters analyzed on -site PH j•TC"P144" ,a,,.2r aGP o-f4Ff2
Y • Field Parameters— Inspectors' Checklist P{/ 4-
Ik/• Meter calibration logs and standards —Calibration frequency
✓• Analytical bench sheets
y Thermometer calibration date(s) — NIST certified in-house thermometers
�Dgr,na..L� N IA. Rokr�•[�iQ.
Piper Trail — Data Comparison (Lab Data to DMRs)
J • Review period: 1ec. 2o✓/p — ✓YV- Zoi8
J • Selected DMRs (n=2 max.):
NJ o;rG�et/)c..G.id
Trea ent Components ORC logbook Co/op/_
fTreatment unit observations
Backup Generator
• Run schedule
• Auto switch on i run under load?
Flow Measurement /
• Meter calibration date 04#tj pID� RaPIa Ej ), SP.44
Sample Collection ?1t"(aJ i'6RA✓ra� ;1 �f�i c.� /o %n cr r�
• Composite sampler— program setup ���+v✓L0/1 1
J• Sample storage temperature Review �Smpler temperature logs
• Tubing appearance,_ Kc4 6✓4/un,47b — �d Pis✓ �vt S{f
• Sample handling after collection
Re iving Waters px
7• Appearance r1.1(o
Cl ing Conference
Findings
✓• Expectations
11Page

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RegionrInspectors' Checklist for Fir Parameters
(This checklist is to be comp.. during regional plant inspections for Field Laboratories. de by certification numbers in the 5000s]
Facility Name: PF r Fkc.
Regional Plant Inspector:1-4t,tiel
NPDES#: e0003-il ptA„t
Regional Ins ector Pontact#:Itq- /- 12sf
Field Lab Certification #: 5-o-90
Region:
Lab Contact: it S rtvr
Date:
1. Check the parameter(s) performed MIS site for reporting purposes.
❑ Total Residual Chlorine (TRC) Temperature (TEMP) ❑ Specific Conductivity (SC)
'�pH Dissolved Oxygen (DO) ❑ Settleable Residue (SETT)
II. General Laboratory note any exceptions in section XI
Are instruments, meters, probes, photometric cells, etc. maintained in good condition? I M Yes ❑ No
Are standards, reagents and consumables used within manufacturer expiration dates? Yes ❑ No
[TRC gel standard is exempt.]
'Are the following items documented where a livable):
Item
TRC
H
TE14P
DO
SC
SETT
Date of sample collection"
Time of sample collection*
Sample collector's initials or signature
Date of sample analysis*
Time of sample analysis*
Analyst initials or signature
Sample site i.e., facility name, location, ID, etc.
Instrument ID
/A
Parameter
Data qualifiers, when required
*Date and time of sample collection and analysis may be the same for in situ or on -site measurements.
III. Total Residual Chlorine — reference method:
Total Residual Chlorine meter make and model:
Is a check standard analyzed each day of use? Circle one: gel or liquid standard
Yes
Ej No
What is the assigned/observed value of the daily check standard?
Is a 5-point calibration verificationperformed? Note date of last verification:
❑ Yes
No
Alternatively, does the lab construct a linear regression, using 5 standards, to calculate
results? Note date of last calibration curve constructed:
❑ Yes
0 No
True values: ❑ pg/L ❑ mg/L
Obtained values: ❑ pg/L ❑ mg/L
What program are samples analyzed on?
Are results reported in proper units? Check one: /L El m /L
Yes
No
Are results reported between the facility's permit limit and the compliance limit of 50 pg/L?
If value is less than the low standard, report as "<x", where x=low standard conc.
Lj Yes
Lj No
Are samples analyzed within 15 minutes of collection?
❑ Yes
❑ No
IV. pH — reference method:
pH meter manufacturer and model: cpmo Pl,-04
Is the pH meter calibrated with t least 2 buffers per mfg's instructions each day of use?
Note buffers used: J to. 0
Yes
❑ No
Is the pH meter calibration checked with an additional buffer each day of use?
Note check buffer used: ;f-•O
Yes
❑ No
Does the check buffer read within t0.1 S.U. of the known value?
Yes
❑ No
Are the following items documented:
Meter calibration?
Yes
No
Check buffer readin s ?
Yes
No
Are samples analyzed within 15 minutes of collection?
Yes
Ej No
Are sample results reported to 0.1 pH units on the eDMR?
Yes
0 No

V. Temperature — reference me Id:
What instrument(s) is used to measui , temperature? Check all that apply: pri meter
❑ DO meter Conductivity meter 9 Digital thermometer ❑ Glass
-therrrOmeter
Is the instrument/thermometer calibr ion the ked at least annually against a NIST
traceable thermometer? 'r ♦ -e. n ..
Yes
❑ No
Is NIST traceability documentation maintained on site?
Yes
El No
Are samples measured in situ or on -site? [REQUIRED - there is no holding time for
temperaturefr ; jQe o4 $ — q 176-1 f nr v 5'577
Yes
❑ No
Are sample results reported in degrees C?
M Yes
❑ No
VI. Dissolved Oxygen — reference method:
DO meter make and model:
Is the air calibration of the DO meter performed each day of use?
❑ Yes
No
Are the following items documented:
Meter calibration?
Ej Yes
No
Are samples analyzed within 15 minutes of collection?
❑ Yes
El No
Are results reported in m /L?
Yes
No
VII. Conductivity — reference method:
Conductivity meter make and model:
Is the meter calibrated daily according to the manufacturer's instructions? Note standard
used this is generally a one -point calibration):
❑ Yes
❑ No
Is a daily check standard analyzed? Note value:
El Yes
No
Are the following items documented:
Meter calibration?
Yes
❑ No
Are samples analyzed within 28 days of collection?
Yes
No
Are results reported in mhos/cm some meters display equivalent S/cm units)?
❑ Yes
❑ No
Vlll. Settleable Residue — reference method:
Does the laboratory have an Imhoff Cone in good condition?
Yes
❑ No
Is the sample settled for 1 hour?
❑ Yes
❑ No
Is the sample aitated after 45 minutes?
El Yes
❑ No
Are the following items documented:
Volume of sample analyzed? Note volume analyzed:
El Yes
E
No
Date and time of sample analysis(settling start time)?
El Yes
No
Time of agitation after 45 minutes of settling?
❑ Yes
❑
No
Sample analysis completion(settling end time)?
Yes
No
Are samples analyzed within 48 hours of collection?
❑ Yes
❑
No
Are results reported in ml/L?
Lj Yes
❑
No
IX. Was a paper trail (comparing contract lab and on -site data to DMRs)
performed? If so, list months reviewed:
❑ Yes
❑ No
X. Is follow-up by the Laboratory Certification program recommended?
❑ Yes
❑ No
XI. Additional comments:
Please submit a copy of this completed form to the Laboratory Certification program at:
DWR Lab Certification, Water Sciences Section, 1623 Mail Service Center, Raleigh NC, 27699-1623
Electronic copies may be emailed to dana.satterwhite(a)ncdenr.gov.
Revision 12/13/2016

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