NC0007064_Report_20230504

DUKE
ENERGY®
APR 18 2023
Serial: RA-23-0100
Mr. Doug Dowden
Environmental Program Supervisor, Industrial Permitting Unit
Division of Water Resources
NC Department of Environmental Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Brunswick Steam Electric Plant, Unit Nos. 1 and 2
2022 Discharge Channel Tritium Summary
Dear Mr. Dowden,
Brunswick Nuclear Plant
8470 River Road SE
Southport, NC 28461
RECEIVED
r,1 5 '3
NCDEQ/DWR/NPDES
This letter fulfills the Brunswick Steam Electric Plant's (BSEP) agreement to provide your office
with summary information regarding concentrations of tritium in discharges from the plant.
Duke Energy Progress, LLC, is providing your office with a summary page containing analytical
data regarding tritium concentrations in conjunction with the development and submittal to
the U.S. Nuclear Regulatory Commission (NRC) of the BSEP Annual Radiological Environmental
Operating Report. This information is being provided with the understanding that it is
generated pursuant to the requirements of the nuclear operating licenses issued by the NRC to
the plant and is not a requirement of the NPDES program.
If there are any questions, please contact Mr. Don Safrit, at [phone] or Mr. Drew
Petrusic, at [phone].
Sincerely,
Jay Ratliff
Plant Manager
Brunswick Steam Electric Plant
Enclosure: 2022 BSEP Discharge Channel Tritium Sampling and Data

2022 BSEP Discharge Channel Tritium Sampling and Data
Monthly samples are collected upstream of the ocean discharge pumps which pump water from the
BSEP discharge channel into the Atlantic Ocean. The samples are collected over a month time period
using a composite sampler with, typically, 50 milliliter aliquots being collected every 4 hours. Zero (0) of
the twelve samples from the discharge channel indicated the presence of tritium. This is based on the
sample analysis lower limit of detection (LLD) criterion of 250 pCVL.
2022 BSEP Discharge Channel Tritium Data
Sample Period
1/5/2022 — 2/1/2022
2/1/2022 — 3/1/2022
3/1/2022 — 4/3/2022
4/3/2022 — 5/3/2022
5/3/2022 — 6/1/2022
6/1/2022 — 7/5/2022
7/5/2022 — 8/1/2022
8/1/2022 — 9/4/2022
9/4/2022 — 10/3/2022
10/3/2022 — 11/1/2022
11/1/2022 — 12/1/2022
12/1/2022 — 1/3/2023
Tritium Concentration (pCi/L)
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
<LLD
2022 BSEP Discharge Channel Tritium
tDischarge Channel fWater Quality Criterion
32000
30000
28000
26000
24000
22000
20000
18000
16000
u 14000
a
12000
10000
8000
6000
4000
2000
0
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month