NC0007064_2020 Discharge Channel Tritium Summary_20210804

�•iN DUKE Brunswick Nuclear Plant
ENERGY® P.O.Box 2846
Southport,NC 28461
JUL 222021,
RECEIVED
Serial: RA-21-0224
"6042021
Mr. Doug Dowden
Supervisor, Complex Permitting Unit NCDEQ/DWR/NPpES
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
2020 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,
OrfiPt
Jay Ratliff
Plant Manager
Brunswick Steam Electric Plant
Enclosure: 2020 BSEP Discharge Channel Tritium Sampling and Data

2020 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. Zero (0) of the twelve samples from the discharge channel indicated the presence of
tritium. The maximum tritium concentration was <LLD pCi/L, which was expected due to plant
operations at the time of sampling.
2020 BSEP Discharge Channel Tritium Data
Sample Date Tritium Concentration (pCi/L)
1/15/2020 <LLD
2/19/2020 <LLD
3/18/2020 <LLD
4/15/2020 <LLD
5/20/2020 <LLD
6/17/2020 <LLD
7/15/2020 <LLD
8/19/2020 <LLD
9/16/2020 <LLD
10/21/2020 <LLD
11/18/2020 <LLD
12/16/2020 <LLD
LLD - Lower Limit of Detection
2019 BSEP Discharge Channel Tritium
—II—Discharge Channel Water Quality Criterion
21000
20000 ■ ■ 'U ■ f ■ li ! ■ 'U a
19000
18000
17000
16000
15000
14000
• 13000
d 12000
11000- 10000
a 9000
8000
7000
6000
5000
4000
3000
2000
1000
0 ---♦ ♦ ♦ ♦ . ♦ ♦ ♦ ♦ , ♦ . ♦ . ♦ ♦-
1/1 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1
Date