NC0007064_2021 Discharge Channel Tritium Summary_20220426

t' DUKE Brunswick Nuclear Plant
ENERGY u River Road 61
'
Southport,NC 28461
A P R.1.2 2022
Serial: RA-22-0128
Mr. Doug Dowden
Environmental Program Supervisor, Industrial Permitting Unit RECEIVED
Division of Water Resources
NC Department of Environmental Quality A R 2 6 2022
1617 Mail Service Center
Raleigh, NC 27699-1617 NCDEQIDWRINPDES
Subject: Brunswick Steam Electric Plant, Unit Nos. 1 and 2
2021 Discharge Channel Tritium Summary
Dear Mr. Dowden,
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: 2021 BSEP Discharge Channel Tritium Sampling and Data

2021 BSEP Discharge Channel Tritium Sampling and Data
Monthly samples are collected upstream of the ocean discharge pumps which pump water from the
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. Two (2) of the
twelve samples from the discharge channel indicated the presence of tritium.The maximum tritium
concentration was 534 pCi/L, which was expected due to plant operations water movement plans at the
time of sampling.
2021 BSEP Discharge Channel Tritium Data
Sample Date Tritium Concentration (pCi/L)
1/5/2021 <LLD
2/3/2021 <LLD
3/1/2021 <LLD
4/1/2021 534
5/4/2021 <LLD
6/1/2021 <LLD
7/1/2021 248
8/2/2021 <LLD
9/1/2021 <LLD
10/1/2021 <LLD
11/3/2021 <LLD
12/2/2021 <LLD
LLD - Lower Limit of Detection
2021 BSEP Discharge Channel Tritium
—*—Discharge Channel —• Water Quality Criterion
32000
30000 —• • • -• • • • • • • •
28000
26000
24000
22000
20000
L.
18000
16000
U 14000
o' 12000
10000
8000
6000
4000
2000
0 --♦ ♦ ♦ TAT • , ♦ ♦ , ♦ ♦ t �
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month