NCS000546_2021 DMR_20210318

Allen Steam Station
i DUKE
ENERGYp
March 18, 2021
NCDEQ, Mooresville Regional Office
Attn: DEMLR Stormwater Program
610 East Center Ave., Suite 301
Mooresville, N.C. 28115
Subject: Duke Energy Carolinas, LLC
NPDES Storm Water Discharge Monitoring Report for:
Allen Steam Station — NCS000546 — Gaston County
Duke Energy
253 Plant Allen Rd.
Belmont, NC 28012
In accordance with Part III, E(2) of the above referenced NPDES Storm Water permit, the
original and one copy of the monthly monitoring reports are attached. The samples collected are
required monthly due to Tier Two or Tier Three Status. The period for sampling ended February
28, 2021. Samples were collected for the period at outfalls SW010, SW016, and SW018 on
February 11, 2021 and samples were collected at outfalls SW007, SW009 and SW020 on
February 22, 2021. The laboratory analysis results were received on March 2, 2021 and March
9, 2021 respectively. Duke Energy has performed the steps required by the Tier II and Tier III
for these outfalls. There were no samples collected at outfalls SW001, SW013-10 and SWO13-
13 for the period, due to No Qualifying Flow condition.
Analytes sampled above the benchmark values for analytical monitoring are as follows.
Outfalll
Parameter
Result
I Benchmark
WO07
I Zinc
0.386 m /L
10.126 m /L
All values reported on the attached reports are dependent on the accuracy of approved
analytical methods used to measure parameters.
Please direct any correspondence or questions concerning the Allen Steam Station NPDES
Storm Water Program to Elizabeth Glenn [phone] or Randy Gantt [phone].
Yours truly,
A k4"
Rick R. Roper, General Manager III
Allen Steam Station
Duke Energy Carolinas, LLC

Allen Steam Station
DUKE
N RGY
Attachments
bc: w/attachment
Elizabeth Glenn
UPS Tracking: 1Z X67 601 42 9594 3934
Duke Energy
253 Plant Allen Rd.
Belmont, NC 28012

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