NC0003468_Instream Data Summary Table_20220302

4., DUKE Dan River Combined Cycle
ENERGY©
Duke Energy Carolinas
864 South Edgewood Road
Eden, NC 27288
RECEIVE
February 21,2022
° 2022
Mr. Sergei Chernikov A'
Supervisor—NC Permitting Group N DECy I /
NC Division of Water Resources �+!/ VVR NPDES
NPDES Wastewater Unit
1617 Mail Services Center
Raleigh,NC 27699-1617
Subject: Duke Energy Carolinas,LLC
Dan River Combined Cycle Station
NPDES Permit No.NC0003468
Rockingham County
Permit Renewal Application-Update
Dear Mr.Chernikov:
Per Condition A(15)-Instream Monitoring,Duke Energy Carolinas,LLC,(Duke)is submitting the attached
Instream Data Summary Table. Please add the Summary Table to the Permit Renewal Application File dated May
28,2021.
Should you have any questions regarding this submittal or require additional information,please contact Joyce
Dishmon at 336-394-5524 or email [e-mail].
I certify under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submitted is, to the best
of my knowledge and belief true, accurate, and complete. 1 am aware that there are significant penalties
for submitting false information, including the possibility of fines and imprisonment for knowing violations
Sincerely,
0.4
Terry Tuck
GM II—Regulated Stations
Dan River Combined Cycle
Attachments
Cc: Lon Snider—WSRO,450 West Hanes Mill Road,Suite 300,Winston-Salem,NC 27105
Joyce Dishmon/Filenet-via email
Willam Milam-via email

DAN RIVER COMBINED CYCLE INSTREAM RESULTS
2021 NPDES PERMIT RENEWAL APPLICATION
As,Total As, Se,Total Se, Hg,Total Hg, Cr,Total Cr, Pb,Total Pb, Cd,Total Cd, Cu,Total Cu, Zn,Total Zn, Hardness,
Depth Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Total(mg/L
Facililty Date Location Code Location (m) (ug/L) (ug/L) (ug/L) (ug/L) (ng/L) (ng/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) as CaCO3)
Dan River CC 5/16/2017 B_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.1 <0.1 1.07 ( <1.0 ( <5.0 I 25.8 25.8
Dan River CC 5/18/2017 B_2_DRUP Upstream 0.3 1.4 1.7
Dan River CC 8/16/2017 B_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 3.95 1.53 2.46 <1.0 1.61 <1.0 <0.1 <0.1 2.36 1.12 <5.0 <5.0 27.1
Dan River CC 11/14/2017 B_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 0.827 1.05 <1.0 <1.0 0.238 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 27.9
I
Dan River CC 2/28/2018 8_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 1.14 0.727 <1.0 <1.0 0.25 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 8.75 32.5
Dan River CC 5/30/2018 B_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 2.79 0.999 1.09 <1.0 0.588 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 26
Dan River CC 8/23/2018 B_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 3.43 1.34 1.03 <1.0 0.595 <0.2 <0.1 <0.1 1.49 <1.0 <5.0 <5.0 24.2
Dan River CC 11/19/2018 B_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 3.85 0.559 1.12 <1.0 0.473 <0.2 <0.1 <0.1 1.19 <1.0 <5.0 <5.0 24.3
Dan River CC 2/12/2019 B_2_DRUP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 1.42 1.58 <1.0 <1.0 <0.2 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 23.8
Dan River CC 5/6/2019 B_2_DRUP Upstream 0.3 <1.0 <1.0 0.912 <1.0 <0.2 <0.1 <1.0 <5.0 25.2
Dan River CC 8/14/2019 B_2_DRUP Upstream 0.3 <1.0 <1.0 0.506 <1.0 <0.2 <0.1 <1.0 <5.0 37.9
Dan River CC 2/4/2020 B_2_DRUP Upstream 0.3 I <1.0 <1.0 <0.5 <1.0 <0.2 <0.1 <1.0 <5.0 25.4
Dan River CC 8/4/2020 B_2_DRUP Upstream 0.3 <1.0 <1.0 0.619 <1.0 <0.2 <0.1 <1.0 <5.0 27.2
Dan River CC 8/20/2020 8_2_DRUP Upstream 0.3 <0.5
Dan River CC 2/2/2021 B_2_DRUP Upstream 0.3 <1.0 <1.0 0.777 <1.0 <0.2 <0.1 <1.0 <5.0 22
Dan River CC 8/26/2021 B_2_DRUP Upstream 0.3 <1.0 <1.0 <0.5 <1.0 <0.2 <0.1 <2.0 <5.0 26.2
4
5/16/2017 E 1
Dan River CC Downstream 0.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 25.8
I
Dan River CC 5/18/2017 E_1 Downstream 0.3 1.83 0.736 ,
Dan River CC 8/16/2017 E_i Downstream 0.3 <1.0 <1.0 <1.0 <1.0 5.12 1.56 2.75 <1.0 1 2 <1.0 <0.1 <0.1 2.71 1.05 7.73 <5.0 28.4
Dan River CC 11/14/2017 E_1 Downstream 0.3 <1.0 <1.0 <1.0 <1.0 1.56 1.54 <1.0 <1.0 0.255 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 24.9
Dan River CC 2/28/2018 E_1 Downstream 0.3 <1.0 <1.0 <1.0 <1.0 1.32 0.666 <1.0 <1.0 0.281 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 7.16 28.7
Dan River CC 5/30/2018 E_1 Downstream 0.3 <1.0 <1.0 <1.0 <1.0 3.75 1.37 1.49 <1.0 0.809 <0.2 <0.1 <0.1 1.14 <1.0 <5.0 <5.0 25.2
'
Dan River CC 8/23/2018 E_l Downstream 0.3 <1.0 <1.0 <1.0 <1.0 4.63 1.34 1.05 <1.0 0.713 <0.2 <0.1 <0.1 1.55 <1.0 <5.0 <5.0 24.1
Dan River CC 11/19/2018 E_1 Downstream 0.3 <1.0 <1.0 <1.0 <1.0 3.06 0.681 <1.0 <1.0 0.515 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 23.4
I
Dan River CC 2/12/2019 E_i Downstream 0.3 <1.0 <1.0 <1.0 <1.0 1.39 6.01 <1.0 <1.0 0.207 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 24.7
Dan River CC 5/6/2019 E_1 Downstream 0.3 <1.0 <1.0 0.94 <1.0 <0.2
<0.1 <1.0 <5.0 26.3
Dan River CC 8/14/2019 E_i Downstream 0.3 <1.0 <1.0 0.544 <1.0 <0.2 <0.1 <1.0 <5.0 36.2
Dan River CC 2/4/2020 E_i Downstream 0.3 <1.0 <1.0 0.639 <1.0 <0.2
<0.1 <1.0 <5.0 24.6
Dan River CC 8/4/2020 E_i Downstream 0.3 <1.0 <1.0 0.521 <1.0 <0.2 <0.1 <1.0 <5.0 24
Dan River CC 8/20/2020 E_1 Downstream 0.3 0.501
Dan River CC 2/2/2021 E_i Downstream 0.3 <1.0 <1.0 1.11 <1.0 <0.2 <0.1 <1.0 <5.0 20
Dan River CC 8/26/2021 E_1 Downstream 0.3 <1.0 <1.0 <0.5 <1.0 <0.2 <0.1 <2.0 <5.0 34.5

DAN RIVER COMBINED CYCLE INSTREAM RESULTS
2021 NPDES PERMIT RENEWAL APPLICATION
As,Total As, Se,Total Se, Hg,Total Hg, Cr,Total Cr, Pb,Total Pb, Cd,Total I Cd, Cu,Total Cu, Zn,Total Zn, Hardness,
Depth Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Recoverable Dissolved Total(mg/L
Facililty Date Location Code Location (m) (ug/L) (ug/L) (ug/L) (ug/L) (ng/L) (ng/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) as CaCO3)
Dan River CC 5/16/2017 RR_2_DN Downstream 0.3 2.02 192 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 50.9
Dan River CC 5/18/2017 RR_2DN Downstream 0.3 1.45 0.714
Dan River CC 8/16/2017 RR2DN Downstream 0.3 1.34 1.2 <1.0 <1.0 1.66 1.14 <1.0 <1.0 <1.0 <1.0 <0.1 <0.1 1.28 <1.0 <5.0 <5.0 60.5
Dan River CC 11/14/2017 RR2DN Downstream 0.3 2.95 2.77 <1.0 <1.0 0.834 0.925 <1.0 <1.0 <0.2 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 64
Dan River CC 2/28/2018 RR_2_DN Downstream 0.3 1.65 1.46 <1.0 <1.0 0.863 0.812 <1.0 <1.0 <0.2 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 7.01 59.7
Dan River CC 5/30/2018 RR2DN Downstream 0.3 1.13 1.02 <1.0 <1.0 2 0.799 <1.0 <1.0 0.216 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 53.5
Dan River CC 8/23/2018 RR2DN Downstream 0.3 1.11 <1.0 <1.0 <1.0 5.41 1.82 1.64 <1.0 1.31 <0.2 <0.1 0.135 3.14 1.13 7.83 <5.0 54.8
Dan River CC 11/19/2018 RR2DN Downstream 0.3 <1.0 <1.0 <1.0 <1.0 2.94 0.703 <1.0 <1.0 0.267 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 35.8
Dan River CC 2/12/2019 RR2DN Downstream 0.3 <1.0 <1.0 <1.0 <1.0 4.86 3.8 1.23 <1.0 1.01 <0.2 <0.1 <0.1 2.38 1.48 7.3 <5.0 45
Dan River CC 5/6/2019 RR2DN Downstream 0.3 <1.0 <1.0 0.953 <1.0 <0.2 0.127 <1.0 <5.0 44.2
Dan River CC 8/14/2019 RR2DN Downstream 0.3 <1.0 <1.0 0.551 <1.0 <0.2 <0.1 <1.0 <5.0 63.7
Dan River CC 2/4/2020 RR2DN Downstream 0.3 <1.0 <1.0 0.751 <1.0 <0.2 <0.1 <1.0 <5.0 40.2
Dan River CC 8/4/2020 RR2DN Downstream 0.3 <1.0 <1.0 1.32 <1.0 <0.2 <0.1 <1.0 <5.0 96.8
Dan River CC 8/20/2020 RR_2_DN Downstream 0.3 0.566
Dan River CC 2/2/2021 RR2DN Downstream 0.3 <1.0 <1.0 1.35 <1.0 <0.2 <0.1 <1.0 <5.0 30.3
Dan River CC 8/26/2021 RR2DN Downstream 0.3 <1.0 <1.0 <0.5 <1.0 <0.2 <0.1 <2.0 <5.0 61.2
Dan River CC 5/16/2017 RR_2_UP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 41.5
Dan River CC 5/18/2017 RR_2_UP Upstream 0.3 1.44 0.757
Dan River CC 8/16/2017 RR2UP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 1.43 1.32 <1.0 <1.0 <1.0 <1.0 <0.1 <0.1 1.15 <1.0 <5.0 <5.0 51.5
Dan River CC 11/14/2017 RR2UP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 1.03 0.939 <1.0 <1.0 <0.2 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 54.1
Dan River CC 2/28/2018 RR2UP Upstream 0.3 <1.0 1.46 <1.0 <1.0 1.07 0.869 <1.0 <1.0 <0.2 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 7.18 47.1
Dan River CC 5/30/2018 RR_2UP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 1.78 0.79 <1.0 <1.0 0.207 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 41.7
Dan River CC 8/23/2018 RR2UP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 5.85 1.87 1.56 <1.0 1.32 0.383 <0.1 0.399 3.46 2.11 7.89 <5.0 80.5
Dan River CC 11/19/2018 RR2UP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 2.92 0.775 <1.0 <1.0 0.212 <0.2 <0.1 <0.1 <1.0 <1.0 <5.0 <5.0 31.5
Dan River CC 2/12/2019 RR_2UP Upstream 0.3 <1.0 <1.0 <1.0 <1.0 4.68 4.68 <1.0 0.768 <0.2 <0.1 <0.1 2.02 1.41 5.24 <5.0 40.5
Dan River CC 5/6/2019 RR2UP Upstream 0.3 <1.0 <1.0 0.904 <1.0 <0.2 <0.1 <1.0 <5.0 40.8
Dan River CC 8/14/2019 RR2UP Upstream 0.3 <1.0 <1.0 0.539 <1.0 <0.2 <0.1 <1.0 <5.0 60.4
Dan River CC 2/4/2020 RR_2UP Upstream 0.3 <1.0 <1.0 0.822 <1.0 <0.2 <0.1 <1.0 <5.0 37.4
Dan River CC 8/4/2020 RR2UP Upstream 0.3 <1.0 <1.0 1.3 <1.0 <0.2 <0.1 1.22 <5.0 30.8
Dan River CC 8/20/2020 RR_2_UP Upstream 0.3 0.62
Dan River CC 2/2/2021 RR2UP Upstream 0.3 <1.0 <1.0 1.5 <1.0 <0.2 <0.1 <1.0 <5.0 29.9
Dan River CC 8/26/2021 RR_2_UP Upstream 0.3 <1.0 <1.0 <0.5 <1.0 <0.2 <0.1 <2.0 <5.0 60.7 -