NCS000573_DMR_20210517

NC Department of
Environmental Quality
Received
le�`EN RGY MAY 1 7 2021
Belews Creek SteamStation
Winston-Salem
Regional Office 3195 Pine Hall Road
Belews Creek, NC
336-445-0642
Certified Mail Tracking: 7020 06400 0000 3191 1752
May 13, 2021
NC Department of Environmental Quality
Division of Water Resources
450 West Hanes Mill Road Suite 300
Winston-Salem, NC 27105-7407
Subject: Duke Energy Carolinas, LLC
NPDES Storm Water Discharge Monitoring Report
Response to Request of Documents for SW Outfall 006
Belews Creek Steam Station —NCS000573— Stokes County
In accordance with Part III, E (2) of the above referenced NPDES Storm Water permit, the original of the
permitted stormwater outfall 006 is enclosed. This is the response to the letter received in April 2021
requesting documents for SW Outfall 006.
SW006 is in Tier III status for Copper and Zinc. This outfall has been historically in tier status for Copper
and Zinc since 2017 and no efforts to resolve the issue has been acheived.
Please direct any correspondence or questions concerning the Belews Creek Steam Station NPDES Storm
Water Program to Brenda Johnson at [phone] or Lori Tollie at [phone].
Yours truly,
'Pam/
Michael Lanning
General Manager Ill, Regulated Stations
RRECC Belews Creek Steam Station
Attachments

Stormwater Outfall 006
1. Outfall 006 has been monitored since sampling began in 2017 with continued exceedances
for Copper and Zinc. The outfall is within a 120 feet radius of Outfalls 003, 004 and 005 with
metal building that sheet flow into the drains during storm activity.
2. The parking areas have been paved that have drains that flow to Outfall 006. The onsite
contractor BHI and I inspect the drainage area monthly for debris or sediment that could
possibly flow into the drains flowing into 006.
3. If I need to send more information or if DEQ would like to schedule a visit to inspect the area
please contact Lori Tollie at [phone] or Brenda Johnson at [phone]. An inspection
was conducted for outfalls (SW003, SW004 and SW005) in 2018 for the same issue of Copper
and Zinc exceedance. A copy of the correspondence is attached.
Thank you,
reada fait
DUE
ENEKRGY
Senior Environmental Professional
Carolinas East Coal
Environmental Services
Duke Energy Inc.
[phone]—Mobile
[phone]—Office
[e-mail]

•
ROY COOPER
r Governor
MICHAEL S. REGAN
secretory
Energy,Mineral WILLIAM E. VINSON, JR.
and Land Resources Interim Director
ENVIRONMENTAL QUALITY
January 29,2018 •
Reginald D. Anderson
General Manager III,Regulated Stations
Duke Energy Carolinas,LLC
Belews Creek Steam Station
3195 Pine Hall Road
Belews Creek,NC 27009
Subject: Stormwater Permit-Tier III Monitoring Response&Waiver
Permit No's: NCS000573
Belews Creek Steam Station
Stokes County—North Carolina
Dear Mr.Anderson:
On January 23,2018, Glen White of the North Carolina Department of Environmental Quality—
Division of Minerals,Energy and Land Resources visited the Belews Creek Steam Station to
evaluate three of the stormwater outfalls listed in the facilities individual stormwater permit. Mr.
White met with Keeley McCormick, Steven Conner, Dulcie Phillips and Lori Tollie; all
representatives of Duke Energy. Joyce Dishman set up the site visit as part of response efforts
following three(3)consecutive exceedance of monitored stormwater parameters. The subject
outfalls (outfalls S W003, S W004&SW005)were elevated to Tier 3 monitoring requirements.
Elevated parameters for all three(3)outfalls were copper(Cu)and zinc(Zn). Outfall SW005
alone had consecutive exceedances of total suspended solids(TSS).
Factors were taken into consideration in DEMLR's response and corrective action:
• Contributing Factor: Zinc and Copper exceedances are likely due to the outfalls vicinity
to the building,permanently installed equipment and construction. The adjacent
buildings roof and siding contribute zinc and copper with each rainfall event.
• Contributing Factor: The area of the subject outfalls is currently under construction.
Soils are being disturbed each week.
• Duke Response:Duke staff have installed additional protective measures including,rip-
rap stone filters,inlet protection and wattles.
• Duke Response: The area is now scheduled to be paved in the coming week. Once
paved, the TSS at SW005 is likely to result below the parameter.
•
State of North Carolina I Environmental Quality I Energy,Mineral and land Resources
Winston-Salem Regional Office 1450 Hans Mill Road,Suite 300 I Win too-Salem,NC 27103
336-776-9800

DEMLR's Response:
•
• SW003&SW004(Immediately return to Tier 1 with modified monitoring schedule.
Monitoring will be required semi-annually,no monthly monitoring required unless,TSS
levels are exceeded consecutively.)
• SW005(Provide monthlymonitoring until three(3)consecutive samples result within
parameters for TSS. Once this is achieved,only semi-annual monitoring will be required
unless consecutive exceedances are seen in the future.)
If you have questions'or need additional information,please contact Glen White at(336)776-
9660.
Sincerely,
Matthew E.Gan
P.E.Gantt,
Regional Engineer
Land Quality Section
Winston-Salem Regional Office
•
•
Enclosures:
Inspection Report
cc:Division of Mineral and Land Resources(WSRO)
Joyce Dishman(Duke Energy,Sr.Environmental Specialist)
State of North Carolina I Environmental Quality I Energy.Mineral and Land Resources
Wmvston-Salem Regional Office 1430 Hanes Mill Road,Sex 300 I Winston-Salem,NC 27103
336-776-9800

Below is a summary of corrective actions that have been taken since the first exceedance for Copper
and/or Zinc at SW Outfall#0006:
1. All storm drains flowing to SW006 were inspected for any foreign objects or debris that may be
causing exceedance.
2. Areas surrounding storm drains were cleaned and inserts placed inside to catch any debris.
3. Waddles were placed around storm drains and replaced as needed.
4. SW006 discharged piping has been repaired/replaced and clean stones placed at the discharge
point.
5. The area surrounding the SFC(Submerged Flight Conveyor) has been paved with concrete and
SFC are completely contained.
6. The parking lot, roadways and area around intake are all paved and only about 10%is gravel to
date.
7. Belt area that conveys gypsum is inspected monthly and cleaned as needed.
8. Inspections of storm drains are conducted by on site contractors quarterly or as requested by
BCSS environmental.

` Stormwater Outfalls SW003,004,005,&006 Improvement Recommendations
v� Cardn° Belews Creek Steam Station,Belews Creek,Stokes County,NC
Prepared for:Duke Energy
Contact Information Document Information
Cardno Prepared for Keeley McCormick
Chuck Cline Project Name Duke Belews Creek Steam
Senior Scientist Station, Belews Creek, NC
9800 Southern Pine Blvd, Suite I Job Reference DUKECCP08
Charlotte, NC 28273
Date July 2017
Telephone: [phone]
www.cardno.com
July 2017 Cardno 2

Stormwater Outfalls SW003,004,005,&006 Improvement Recommendations
Cc-Rranc Belews Creek Steam Station,Belews Creek,Stokes County,NC
Prepared for: Duke Energy
Introduction:
Cardno personnel conducted stormwater sampling on June 4th and June 13th at the Belews Creek Steam
Station. Stormwater outfalls sampled included, SW007, SW011, SW013, SW024, collected on June 4th and
SW003, SW004 SW005, SW006 and SW015, collected on June 13th. The remaining outfalls could not be
sampled due to no flow or co-mingled water. Improvements have been made at the drop inlets that feed outfalls
SW003, SW004, and SW005 since the original February 2017 Stormwater Review report prepared by Cardno.
The June 13th sampling event occurred during a fairly intensive rain event, allowing good observations.
Benchmark Exceedances:
Benchmark exceedances occurred in samples collected from outfalls SW003, SW004, SW005 and SW006. A
summary table of exceedances is below.
A summary of benchmark exceedances is included in the table below.
Parameter Benchmark SW003 SW004 SW005 SW006
Zinc 0.126 mg/L 0.421 0.184 0.194
Copper 0.010 mg/L 0.028 0.0149 0.0131
TSS 100 mg/L 260 210
Hg*** 12 ng/L 51.8 34.8 41.3 (dup 26.0) 25.2
"" Hg does not have a benchmark but any values >12 ng/L must be documented on the DMR
The Hg duplicate concentration is greater than 20% RPD.
TSS=Total Suspended Solids
Hg=Mercury
Generally as Total Suspended Solids (TSS) increases so do metal concentrations. Therefore, reducing turbidity
should be a focus of the outfall improvements.
Outfall Observations/Recommendations:
SW006:
> Outfall SW006 only slightly exceeded zinc and copper. The bottom of outfall SW006, constructed of CMP is
severely corroded and will require improvement for sample collection. A short section of slip lined pipe can
be added or the existing CMP can be excavated to expose competent pipe. An extension can be added to
the outfall. Stone should be placed to stabilize the bank at the area of excavation.
> Determine if drop inlets feed SW006 and make similar recommended improvements as SW003, SW004 and
SW005. See below.
> Determine all sources of flow which contribute to outfall SW006. Access each source for stormwater quality.
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TABLE 1:Outfall Assessment Results
Outfall ID Sampling Status 2020 Exceedances ROS Status Tier Status Primary Industrial Activities SW001 Not Sampled ROS with SW024 Recommendation
SW002 Not Sampled Only listed in Permit. Not seen in SPPP or on Map.
SW003 Conveyor Transport List in Wastewater Permit —
Monthly Zn,Cu,Hg Tier I Conveyor Transport No Change
SW004 Semi-Annual Completed Potential ROS with
March 2020 Zn SW003 Conveyor Transport/Liquid Storage Coordinate with the Winston-Salem Regional Office to pursue ROS designation
SW005 Semi-Annual Completed May
2020 Zn,Cu,Hg Conveyor Transport/Liquid Storage No Change
SW006 Monthly Zn Tier III Conveyor Transport/Material Storage No Change
SW007 Semi-Annual Completed
January 2020 Train Transport No Change
SW008 Not Sampled
SW009 MonthlyNone Permit not required/No Change
Tier I Conveyor Transport/Liquid Storage No Change
SW010 Not Sampled
SW011 Conveyor Transport Permit not required/No Change
Semi-Annual Train Transport
SW012 Semi-Annual Reroute to tank/Remove from permit in future?
SW013 Semi-Annual Completed
Liquid Storage Reroute to tank/Remove from permit in future?
January 2020 Liquid Storage/Train Transport No Change
SW014 Not Sampled ROS with SW013
SW015 Conveyor Transport/Liquid Storage No Change
Semi-Annual
SW016 Liquid Storage Used oil tank removed from Outfall Description/No Change
Semi-Annual Liquid Storage/Train Transport No Change
SW017 Semi-Annual Potential ROS with
SW016 Liquid Storage/Train Transport Coordinate with the Winston-Salem Regional Office to pursue ROS designation
SW018 Not Sampled
SW018A Train Transport Permit not required/No Change
Monthly Tier II Train Transport/Laydown Updated drainage area/No Change
SW018B Not Sampled
SW019 Train Transport Updated drainage area/Permit not required/No Change
Not Sampledq
Train Transport Updated drainage area/Permit not required/No Change
SW022 Semi-Annual Completed
February 2020 Train Transport No Change
SW024 Semi-Annual
SW025 Not Sampled None Updated Imperviousness/Remove Outfall from SW Permit
SW026 Not Sampled No Outfall Permit not required/No Change
None Permit not required/Na Change
SW027 Semi-Annual Completed
February 2020 Landfill No Change
SW028 Semi-Annual Completed
February 2020 Material Transport Added to Appendix C
SW029 Semi-Annual Completed Potential ROS with
February 2020 TSS SW028 Material Transport Added to Appendix C/Coordinate with the Winston-Salem Regional Office to
SW030 N/A pursue ROS designation
Future Addition

Summary of Analytical Monitoring Data 2017-2020
Belews Creek Steam Station
NPDES Stormwater Permit No.NC000573
Stormwater
Outfall SW 006
Date
Sampled 6/13/2017 9/17/2017 10/23/2-17 12/20/2017 4/23/2018 10/18/2018 11/2/2018 12/14/2018 1/19/2019 4/5/2019 11/12/2019 12/10/2019 1/24/2020 5/27/2020 8/21/2020 9/17/2020 12/14/2020
Rainfall 0.27 1.06 1.54 0.41 0.53 0.3 0.3 03 0.5 0.8 0.34 0.23 1.04 1.72 1.17 1.79 1.15
pH 7S6 10.81 7.89 7.54 6.7 6.9 6.7 6.6 6.1 7 6.52 6.4 7 85 6.2 7.4 6.1
Silver <0.0003 0.00226 0.000521 <0.0003 <0.0003 <0.0003 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002
Arsenic 0.00431 0.0129 0.00274 0.00161 0.00336 0.00195 0.00129 <0.001 0.00206 0.00117 <0.001 0.00124 0.00101 <0.001 0.00125 0.00107 <0.001
Boron 0.057 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05
Beryllium <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Cadmium <0.001 <0.001 <0.001 <0,001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Chromium 0.00839 0.273 0.00783 <0.001 0.0145 0.00585 0.00389 <0.001 0.00601 0.00141 0.00343 0.00412 0.0012 <0.001 <0.001 0.0024 0.00213
Copper 0A1`31 0.0349f 0.01223 0.00688 0.024 0.0121' 0.00899 0.00265 0.00646 0.00427 0.00421 0.00515 0.00244 0.00388 0.00566 0.00479 0.00304
Nickel 0.00933 0.021 0.00482 0.00348 0.0104 0.00457 0.00305 0.00114 0.00404 0.00128 0.00208 0.00236 <0.001 <0.001 <0.001 0.0018 0.00147
Lead 0.00141 0.00821 0.00171 0.00101 0.0033 0.00138 0.00119 <0.001 0.00162 <0.001 <0.001 0.0012 <0.001 <0.001 <0.001 <0.001 <0.001
Antimony <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 <0.001
Selenium 0.00416 0.00426 0.00217 0.00249 0.00199 0.00258 0.00188 0.00117 0.00174 0.00395 0.0016 0.00138 0.00172 0.0018 0.00289 0.00293 <0.001
Thallium <0.0002 0.000381 <0.0002 <0.0002 0.000218 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <0.0002
Zinc 0.19, 0.20i 0.079 0.109 0.469 0.16 P 55 0.18� 0.124 04 0.071 OA OZt3� 0.075 0.05 0.08
Mercury '' 14.8 AIR A 37.8; 43A Ig 18.6 Avv 28A Aig 6.26 13A Avg 31.2 Ale 19 A
2S'X �C st 178 23 1975
TSS 56 431 59 32 110 33 29 9.8 5.3 II 30 24 5.9 <2.5 2.6 22 46
Oil&Grease <4.4 <4.9 <4.5 <4.7 <4.8 <5.2 <4.7 <4.5 <4.5, <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0
PCB-1016 <0.4 <0.4 <0.4 <0.4
PCB-1221 <0.4 <0.4 <0.4 <0.4
PCB-1232 <0.4 <0.4 <0.4 <0.4
PCB-1242 <OA <0.4 <0.4 <0.4
PCB-1248 <0.4 <0.4 <0.4 <0A
PCB-1254 <0.4 <0.4 <0.4 <0.4
PCB-1260 _ <0.4 <0.4 <OA <0.4

Outfall SW006
(Drainage Area 6) Discharge Structure: 18-inch-diameter CMP Location: Intake Canal
Coordinates: 36°16'47.25"N 80°3'28.54"W Drainage Area:3.7 acres Impervious Area:
75 percent Area Description Drainage Area 6 contains the old warehouse. The area in front of
the old warehouse is covered with gravel and there is a paved laydown area behind the
building. There is a permanent trailer that serves as an office and conference center for
contractors and covered shop building that houses welding equipment and forklifts.
Additionally, this drainage area contains approximately 280 feet of paved roadways and
approximately 320 feet of railways. Approximately 75 percent of this drainage basin is paved or
roofed, not considering the gravel area.

SW dot:,
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form,please visit bttps://deq.nc.eov/about/divisions/enerev-mineral-land-
resources/energy-mineral-land-permits/stormwater-perm its/npdes-industrial-sw#tab-4
Permit No.: NI/C/S/Q/Q/Q/5/7/3/ or Certificate of Coverage No.: NI/./G/ / / / / / /
Facility Name: Eelews Creek Steam Station
County: Stokes Phone No. [phone]
Inspector: C �.r ,� y,,n
Date of Inspection: 1.2.19/i
Time of Inspection: 1v1L
Total Event Precipitation (inches): Q,SO
All permits require qualitative monitoring to be performed during a"measurable storm event."
A"measurable storm event"is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period,and the permittee
obtains approval from the local DEMLR Regional Office.
By this signature,I certify that this report is accurate and complete to the best of my knowledge:
_ GM
,4--Wii,.-
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 5WC0t, Structure(pipe, ditch,etc.): /?2►N1P 4vie.1
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
Page 1 of 2
SWU-242,Last modified 07/28/2017

4:At .11' Swo o6
2. Color: Describe the color of the discharge using basic colors (red,brown,blue, etc.) and tint
(light, medium,dark) as descriptors: ck&r
3. Odor: Describe any distinct odors that the discharge may have (i.e.,smells strongly of oil,
weak chlorine odor, etc.): flz:n2
4. Clarity: Choose the number which best describes the clarity of the discharge,where 1 is
clear and 5 is very cloudy:
2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in
the stormwater discharge,where 1 is no solids and 5 is the surface covered with floating solids:
2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended
solids in the stormwater discharge,where 1 is no solids and 5 is extremely muddy:
2 3 4 5
7. Is there any foam in the stormwater discharge? tiYes 0 No ,+,:.+c^ •��,,�,
8. Is there an oil sheen in the stormwater discharge? 0 Yes (161No
9. Is there evidence of erosion or deposition at the
outfall? 0 Yes iNo
10. Other Obvious Indicators of Stormwater Pollution:
List and describe 17c.1e
Note: Low clarity,high solids,and/or the presence of foam,oil sheen,or erosion/deposition
may be indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242,Last modified 07/28/2017

Non-Stormwater Discharge Outfall Inspection
Location: Belews Creek Steam Station Date of Last Rainfall: 3/z5/zol8 Depth of Last Rainfall Event: Q, 9
Outfall ID:SW006 Outfall Description: 18"CMP
Non-Stormwater Discharge Present ❑ Yes Igtgo
Latitude:36 16'46" Longitude:80 03'29"
Observations: FAA/
Nearby Landmark:
Follow-up Investigation:
Outfall Image
•4441. � Allowable Non-Stormwater Discharges Historical Follow-Up
,'.- " Other Authorized Non Stormwater NPDES permit
• 0 0
1,� Uncontaminated Groundwater 0 0
Foundation Drains 0 0
Air-Conditioner Condensate without Added Chemicals 0 0
. ra. ` Springs ❑ ❑
- a.: :x -,. ; a X-' Uncontaminated Potable Water Discharges ❑ 0
-AL1; r Waterline and Fire Hydrant Flushings 0
' y``". tie . .,•1. +�. Water from Footing Drains 0 0
❑
A�, �`¢4y;a� "�+�, q �' Flows from Riparian Habitats and Wetlands ❑ ❑
• ,4` l�,', .. t rl't0px`` Fire Fighting or Fire-Fighting Training Discharges 0 0
.'S
}!; r,{ � c Emergency Shower or Eye-Wash Discharges ❑
Notes:Outfall is inaccessible,photo&lat/long is for 1'upstream drop inlet
Drainage Area Activities(check all that apply) —7�
Spoil Area CI
Area ❑ Inspector: a/c P g/1//tc Date: /i/ ����
EquipmentNehicle Parking ❑
Undeveloped/Natural Area ❑
Inert Laydown/Storage 0
Above Ground Liquid Storage(non-oil) 0
Above Ground Liquid Storage(oil) 0
Vehicle/Equipment Maintenance ❑
Fuel/Oil Unloading 0
Chemical Loading/Unloading ❑
Switchyard 0
Landfills/Scrap Yards/Open Dumps 0
Decommissioning Activity ❑
Ash Handling/Hauling ❑
Gypsum Haul/Storage ❑
Ash Storage/Structural Fill 0

DUKE
ENERGY.
SDO Narrative Description and BMP Summary Location: Belews Creek Steam Station
Permit No.: NCS000573
Outfall ID SW006 PritLYi �; .• ,.
• i? •
Discharge Structure 18"CMP f ;; `'� yr'ti' , - t'
Location Intake Canal ``
Latitud � � � -�- -� � _-e-Longitude 36°16'46.72"N � f�td�•
80°03'29.23"W �.<;
Drainage Area ��' � '� `
9 3.5 acres ^r � .J
Percent Impervious 54% a
Permit Monitoring Table 2 '` '
Industrial Activities and Drainage Area 6 contains the Submerged Flight Conveyor equipment,
Description concrete bunker for material stack out, concrete approach apron, and
concrete truck turn around to the east of the bunker. Additionally, this
drainage area contains approximately 280 feet of paved roadways and
approximately 320 feet of railways.
Significant Conveyor Transport Limestone
Materials/Potential (Solid): Gypsum
Pollutants Inert Material: Clean metal and plastic
Bottom Ash (Dewatered
Solids): Bottom Ash (slurry)
Delivery Vehicles:
BMP Summary • Inspect all vehicles arriving on the plant site and ensure overall
integrity of the body or container.
• Control leakage or spillage from vehicles or containers and ensure
that proper protective measurement.
Inert Material
• Organize material to prevent struck-by accidents.
• Evaluate excess material and properly discard as necessary.
Conveyor Transport
• Covered conveyor area minimizes threat to impact stormwater.
• Operations perform daily walk downs to identify potential
stormwater pollutants.
• In the event that significant amounts of gypsum or limestone are
observed, an inquiry into cause of material loss and potential
solutions shall be considered.
Train Transport
• Inspect loading/unloading areas and clean-up fugitive material,
as needed.
• In the event that significant amounts of fugitive material are
observed, an inquiry into cause of material loss and potential
solutions shall be considered.
Bottom Ash
• Perform daily inspections of the bottom ash equipment to
ensure that all water is contained.
• Wash down concrete with truck traffic using hose into bunker
drain trenches.
Notes:
1. Outfall fact sheet provides documentation for permit sections for narrative description of potential
pollutants (Part II, Section A, 1.(b))and BMP Summary (Part II, Section A, 2.(c))
8/zA1gj

Semi-Annual Facility SPPP Inspection Report
Belews Creek Steam Station-Belews Creek,Stokes County,NC
Prepared for:Duke Energy
30.12 Stormwater Outfall 006
30.12.1 Inspection Finding
Based on our inspection, stormwater outfall 006 was free of debris, erosion or spills.
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Attt
April 2019 Cardno
43
Dole.Inspection Report-Final

STORMWATER
ANNUAL SUMMARY DATA MONITORING REPORT (DMR) //SPPP Annual Update DATA REVIEW
Calendar Year 2019 FORM
Individual NPDES Permit No. NCSnnnnnn
3 or --- —
Certificate of Coverage (COC) No. NCGI II I I II II
This monitoring report summary of the calendar year should be kept on file on-site with the facility SPPP.
Facility Name: Belews Creek Steam Station
County: Stokes
Phone Number: (336 )445-0634 Total no. of SDOs monitored 17
Outfall No. SW006
Is this outfall currently in Tier 2 (monitored monthly)?
year?
Was this outfall ever in Tier 2 (monitored monthly) during the pastYes ❑ No ❑
Yes ICJ No ❑
If this outfall was in Tier 2 last year, why was monthly monitoring discontinued?
I
Enough consecutive samples below benchmarks to decrease frequency
rj
Received approval from DWQ to reduce monitoring frequency ❑
Other ❑
Was this SDO monitored because of vehicle maintenance activities?
Yes No (�
Parameter, (units)
Total 01077 101002 01022 01012 01027
Rainfall, 01034
inches, I 01042 01067
Benchmark N/A — -- — - —-1-
Date Sample Silve;, TotalI
Collected, Arsenic Total T�.�Boron. Total(A) Beryllium, Cadmium
mm/dd! (Ag)mgdL (As)mil n� I!_ Total
gum (CuCop)m Total i Nickel Total
YY 9 Total, ibe) Total(Cd1 f Total(Cr)mglL (Cu)trig/t, (Nib mglL
1/29/19 0.20 <0.0002 �, me/L 1 mit I
0.00206 <0.05 <0.001 I <0.001 0.00601 2/19 N/A No Flow No Flow -- 0.00646 0.00404
No Flow No Flow I No Flow _ No Flow No Flow No Flow
3/19 N/A No Flow No Flow No Flow No Flow No Flow No Flow No Flow No Flow
4/5/19 0.80 <0.0002 0.00117 <0.05 <
5/19 N/A No Flow No Flow 0.001 � <0.001 0.00141 0.00427 0.00128
No Flow No Flow No Flow No Flow No Row No Flow
6/19 N/A No Flow No Flow No Flow No Flow No Flow No Flow No Flow
--- No Flow
SWU-264 -Generic Annual DMR
Last revised 5/02/2018

Additional Outfall Attachment
Outfall No. SW006 — --
Is this outfall currently in Tier 2 (monitored monthly)?
Was this outfall ever in Tier 2 (monitored monthly) during the past year? Yes r ) No ❑
If this outfall was in Tier 2 last yew, why was monthly monitoring discontinued? Yes (!�; No ❑
Enough consecutive samples below benchmarks to decrease frequency ❑
Received approval from DWG? to reduce monitoring frequency _
Other —
Was this SDO monitored because of vehicle maintenance activities?
---- — Yes ❑ No AI
Total Parameter, (units)
Rainfall, 01077 01002 01022
01012 01027 �01034 01042 inches
Benchmark N/A - ��1
Date Sample ae. , �_ ________
Collected, Silver, Total !Arsenic. Total 1( "`
Boron Total 82 Beryllium. I Cadmium °
mm/dd/yy (Ad)mgai 'I./As)rrgtl mtl/t_ Total(Be) (Cd) Total
Copper.Tote! (Ni) :. Tots!A
t Total Tota�(Cr)mglL (Cc+t mgiL !Ni)sng/1_
_ 7/19 No Flow'�� al
8/19 N/A No Flow No Flow M No Flow N --�----�� —
N/A No Row No Flow - + -- No Flow No Flow L-_'�o Flow
No Flow I No Flow No Flow No Flow
9/19 N/A No Flow No Flow No Flow No Flow No Flow
10/19 N/A No Flow No Flow No Flow ' No Flow
._. No Flow No Flow No Flow No Flow No Flow
11/12/19 0.34N/A <0.000No g < No Flow No Flow No Flow No Flow
0.05 <0.001 < 0.00208 Flow
12/10/19 0.23 <0.0002 0.00124 <0.05 <0.001
0.00343 0.00421
— nil
0.001 <0.001 0.00412 0.00515
0.00236
ammium11111111111111MI IIIIIIIIIIIMIIIIIIIIIIII MEM
MIMIMin ........111111111111111111
111111111111111 _Minnimin .
IIIIIIIIIIIII ___Mil
SWU-264-Generic Annual DMR
Last revised 5/02/2018

Annual SPPP Update
Belews Creek Steam Station
4.1.1.3 SW006
Outfall SW006 was sampled four times during the 2019 monitoring period. The last exceedance of
copper at the outfall was on 10/10/2018. Sample concentrations remained steady during 2019, with all
four events below benchmark standards. This outfall is currently in Tier Ill status.
Copper
0.04
0.035 0 1)349
0.03
0.025
0.02 • 0.0211
0.015
• 0.0131
• 0.0122 • 0.0123
0.01 Comer Bencittnark Concentration 0.01 melt
0.00899
• 0.00688
0.005 • 0.00646
• 0.00427 • 0.0042115
0 Date a 0.00265
1/35/2017 7/14/2017 1/10/2018 7/9/2018 1/5/2019 7/4/2019 12/31/2019
April 2020 Cardno
5
Belews Creek Annual Update•Apnl 2020

I
Annual SPPP Update
Belews Creek Steam Station
4.1.2.4 SW006
Duffel!SW006 was sampled four times during the 2019 monitoring period. During one sampling event,
sample concentration exceeded the benchmark value. Sample concentrations were depleted
considerably following the April 2019 sampling event. This outfall is currently in Tier Ill status with respect
to zinc.
Zinc
0.5
0.45 0 0.467
0.4
0.35
I 0.3
0.25
0.2 0 00.204 00.21
0.194 0.16 0 0.18
0.15 — - ®00.155
I -- Zinc Benchmark Concentration 0.126 mg/L — — --- ------------- ___
0.1 0 0.109 0.124
0 0.079
0.05 Q • 0.07
0 'G°° 0.071
ate
1/15/2017 7/14/2017 1/10/2018 7/9/2018 1/5/2019 7/4/2019 12/31/2019
•
I
I
I
I
I
April 2020 Cardno 9
Belem Creek Annual Update•ApAI 2020

�� DUKE
ENERGY.
Non-Stormwater Discharge Assessment
Evaluation Outfall Evaluation
Date Observed Method Result Potential Source Inspector
4/17/2020 SW003 Visual No Flow N/A J. Sexton
4/17/2020 SW004 Visual No Flow N/A J. Sexton
4/17/2020 SW005 Visual No Flow N/A J. Sexton
4/17/2020 SW006 Visual No Flow N/A J. Sexton
4/17/2020 SW007 Visual Clear Discharge Groundwater J. Sexton
4/17/2020 SW009 Visual No Flow N/A J. Sexton
4/17/2020 SWO11 Visual No Flow N/A J. Sexton
4/17/2020 SW012 Visual Inaccessable ' N/A J. Sexton
4/17/2020 SW013 Visual No Flow N/A J. Sexton
4/17/2020 SW014 Visual Inaccessable ' N/A J. Sexton
4/17/2020 SW015 Visual Undetermined z N/A J. Sexton
4/17/2020 SW016 Visual Undetermined 2 N/A J. Sexton
4/17/2020 SW017 Visual Undetermined 2 N/A J. Sexton
4/17/2020 SW018A Visual No Flow N/A J. Sexton
4/17/2020 SW022 _ Visual No Flow N/A J. Sexton
4/17/2020 SW024 Visual No Flow N/A J. Sexton
4/17/2020 SW027 Visual No Flow N/A J. Sexton
4/17/2020 SW028 Visual No Flow N/A J. Sexton
4/17/2020 SW029 Visual No Flow N/A J. Sexton
Notes:
1. Inaccessible due to steep,overgrown slope.
2. Lake level comingling with discharge.

DUKE
v ENERGY
Location:Belews Creek Steam Station
Non-Stormwater Discharge Outfall Inspection Permit No.NCS000573
Outfall ID:SW006 Outfall Description: 18" CMP Date of Last Rainfall: 4/13/20 Depth of Last Rainfall Event: 0.0.85"
Latitude:36 16'47" Longitude: 80 3'28" Non-Stormwater Discharge Present El Yes M No ❑ Unknown
Nearby Landmark: Observations: None
Outfall Image Follow-up Investigation:None.
Allowable Non-Stormwater Discharges Historical Follow-Up
•... c.a.4-,,
•;:�:,_ ` '`,,, Other Authorized Non-Stormwater NPDES permit
<.,.. 17,
, :. Uncontaminated Groundwater 0 0
Foundation Drains 0 ❑
Air-Conditioner Condensate without Added Chemicals 0 0
;ha,, Springs ❑ ❑
�, Uncontaminated Potable Water Discharges ❑ ❑
.' •
:'�' Waterline and Fire Hydrant Flushings ❑ El
% Water from Footing Drains ❑ ❑
;;i Flows from Riparian Habitats and Wetlands CI ❑
. Fire-Fighting or Fire-Fighting Training Discharges CI GI
/' Emergency Shower or Eye-Wash Discharges ❑ CI•
Drainage Area Activities(check all that apply)
Spoil Area ❑
Borrow Area ❑ Inspector: Joshua Sexton Date: 4/17/20
Equipment/Vehicle Parking
Undeveloped/Natural Area ❑
Inert Laydown/Storage ® Notes:
Above Ground Liquid Storage(non-oil) 21
Above Ground Liquid Storage(oil) 21
Vehicle/Equipment Maintenance 0
Fuel/Oil Unloading ❑
Chemical Loading/Unloading ❑
Switchyard 0
Landfills/Scrap Yards/Open Dumps 0 +
Decommissioning Activity ❑
Ash Handling/Hauling El
Gypsum Haul/Storage M
Ash Storage/Structural Fill ❑

Environmental
Quality
Storm water Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form,please visit hops://deq.nceov/about/divisions/energy-mineral-land-
resources/energy-mineral-land-permits/storrnwater-permits/npdes-industrial-sw#ttab-4
Permit No.: )\[/C/S/Q/Q/B/5/7/3_/ or Certificate of Coverage No.: N/f/Q/ / / / / / /
Facility Name: Belews Creek Steam Station
County:Stokes Phone No. 1.336) 445-0634
Inspector: 0�,
Date of Inspection: ` Dq-30
Time of Inspection: ‘.36)1
Total Event Precipitation (inches): U,LC)
All permits require qualitative monitoring to be performed during a"measurable storm event."
A"measurable storm event"is a storm event that results in an actual discharge from the
i permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period,and the permittee
obtains approval from the local DEMLR Regional Office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. Structure (pipe,ditch,etc.):
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
Page 1 of 2
SWU-242,Last modified 07/28/2017

2. Color: Describe the color of the d; charge using basic colors(red,brown,blue,etc.)and tint
(light,medium,dark)as descriptors: C-
3. Odor: Describe any distinct odors that the discharge may have(i.e.,smells strongly of oil,
weak chlorine odor,etc.):
4. Clarity: Choose the number which best describes the clarity of the discharge,where 1 is
clear and 5 is very cloudy:
C) 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in
the stormwater discharge,where 1 is no solids and 5 is the surface covered with floating solids:
3 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended
solids in the stormwater discharge,where 1 is no solids and 5 is extremely muddy:
11 2 3 4 5
7. Is there any foam in the stormwater discharge? 0 Yes ® No
8. Is there an oil sheen in the stormwater discharge?0 Yes ® No
9. Is there evidence of erosion or deposition at the
outfall? 0 Yes ®No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
Note: Low clarity,high solids,and/or the presence of foam,oil sheen,or erosion/deposition
maybe indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242,Last modified 07/28/2017

Non-Stormwater Discharge Outfall Inspection
Location: Belews Creek Steam Station
Date of Last Rainfall: '
t
Outfall ID:SW006 Outfall Description: 18"CMP 7� Depth of Last Rainfall Event:
Latitude:36 16'46" Longitude:80 03'29" Non-Stormwater Discharge/ Pr sent ❑Yes ��
Observations: i/ A
Nearby Landmark: Follow-up Investigation 4 7crS
Outfall Image �� G/�U.)/ 0 6� u•1rJs i�sPcG
z ;4? �''e9 �,,> Allowable Non-Stormwater Discharges Historical Follow-Up
n r ' 'r' Other Authorized Non-Stormwater NPDES permit
Uncontaminated Groundwater CI
El
t FE`' Foundation Drains �/ ❑
..► r ; . Air-Conditioner Condensate without Added Chemicals ❑ ❑
1 , /. Springs 0 0
�:. Uncontaminated Potable Water Discharges ❑ ❑
� , , ` � Waterline and Fire Hydrant Flushings 0
'"' { �. ` Water from Footing Drains 0 0
•
'.`'� .�' /il' • T . Flows from Riparian Habitats and Wetlands
„( t�, , ,� Fire-Fighting or Fire-Fighting Training Discharges ❑ 0
y r 1,.. ' ` t. �'.• t: Emergency Shower or Eye-Wash Discharges 0
. , Mt ttJ4 J� )cGOL �OW:nq -!yam /�RGT�'-C �w;/u
Notes:Outfall i ' ac sible, hoto&lat/long is for 1st upstream drop inlet
Drainage Area Activities(check all that applv2
Spoil Area Inspect Date: /0// 06'2-en
Borrow Area 0
EquipmentNehicle Parking 0
Undeveloped/Natural Area 0
Inert Laydown/Storage 0
Above Ground Liquid Storage(non-oil) 0
Above Ground Liquid Storage(oil) ❑
Vehicle/Equipment Maintenance 0
Fuel/Oil Unloading 0
Chemical Loading/Unloading 0
Switchyard 0
Landfills/Scrap Yards/Open Dumps 0
Decommissioning Activity 0
Ash Handling/Hauling 0
Gypsum Haul/Storage 0
Ash Storage/Structural Fill 0

Semi-Annual Facility SPPP Inspection Report
Area: Month/Year:
Insp t y F N me):
� dd�
��� �/ /74.Atd 45013 = drdA/
�
Required Action(s):
' 4 '"-5 u)ere e 4eo/ ��Mti' �!'�e o ,'nl.9ejo'I.
C�egr elArs5 and 5e4i'm�-�-�
Drcii'n 3 were
a
Corrective Action(s) Taken (include Completion Date):
/1qi 4%%i d Can -i o 4k7Lo -.Aed/au)
L dfOi3 dear p.or 5ed% �r n�' aikt4 eileldril 5
/e/f/2-eziel

Non-Stormwater Discharge Outfall Inspection
Location: Belews Creek Steam Station / �7 Date of Last Rainfall: aI��, Depth of Last Rainfall Event: �, la
Outfall ID:SW006 Outfall Description: 18"CMP
Non-Stormwater Discharge Present ❑Yes �dt5 Latitude:36 16'46" Longitude:80 03'29" /, �� y
Observations:a)K*4 Q ��ne L fir' _o dr0 nS
Nearby Landmark: Follow-up Investigation:�A"= ("��� -4 sr .'`-tu11 C J
Outfall Image
CoJcr 6 , 3 /r0koZ I td re moot• '01d ',Olnd1.- fi 14eir5 1
.�:'r Allowable Non-Stormwater Discharges Historical Follow-Up
*' ' Other Authorized Non-Stormwater NPDES permit
0 ❑
Uncontaminated Groundwater 0 0
Foundation Drains 0 0
r, ► /
Air-Conditioner Condensate without Added Chemicals 0 0
!` : Springs 0
Uncontaminated Potable Water Discharges ❑ 0
;_ . Waterline and Fire Hydrant Flushings 0 0
Yp. Y; 0 0
'W'T''. '�a� c aw{": r w Water from Footing Drains
_ Flows from Riparian Habitats and Wetlands ❑ ❑
" v4 J ' „' Fire-Fighting or Fire-Fighting Training Discharges ❑
Jw at14 L.s +• ,L ,�t
* `1 •
-.•;, µ,, Emergency Shower or Eye-Wash Discharges ❑ 0
p, _ ..
Notes:Outfall is inaccessible,photo&Iat/long is for 161 upstream drop inlet
Drainage Area Activities(check all that apply)
Spoil Area ❑ Inspector: ?
Borrow Area ❑ J /'/ Date: Q /O ZOZ1
Equipment/Vehicle Parking ❑ �( / /G r ��f��
Undeveloped/Natural Area 0
Inert Laydown/Storage 0
Above Ground Liquid Storage(non-oil) ❑
Above Ground Liquid Storage(oil) 0
Vehicle/Equipment Maintenance ❑
Fuel/Oil Unloading 0
Chemical Loading/Unloading 0
Switchyard 0
Landfills/Scrap Yards/Open Dumps 0
Decommissioning Activity ❑
Ash Handling/Hauling 0
Gypsum Haul/Storage 0
Ash Storage/Structural Fill 0

Semi-Annual Facility SPPP Inspection Report
Area:S (I bo coMonth/Year:
7 pected By(Fu )r n :
Area 3404V4 'Q r,5�
Required Action(s):
Clean a ►t dl,ra ►n5 �ale
Y k�e utroc C dir yl
Ct-e6riS,
Corrective Action(s)Taken (include Completion Date):
eT)QiY112)(0-e W , V\ct,4- a r q.ee
U
Q