NCS000546_2020 DMR_20201209

Allen Steam Station
('DUKE
`C ENERGY
December 8, 2020
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
November 30, 2020. Samples were collected for the period at outfalls SW007, SW009, SW010,
SW016, SW018 and SW020 on November 11, 2020. The laboratory analysis results were
received on November 24, 2020. Duke Energy has performed the steps required by the Tier II
and Tier III for these outfalls. There was no sample collected at outfalls SW001, SW013-10 and
SWO13-13 for the period, due to No Qualifying Flow condition.
Outfalls SWO08 and SW015 were sampled on November 11, 2020 and the analysis results are
included on this DMR.
Analytes sampled above the benchmark values for analytical monitoring are as follows.
Outfall
Parameter
Result
Benchmark
W007
Zinc
0.193 m /L
0.126 m /L
SW016
Copper
0.0153 m /L
0.010 m /L
SW016
TSS
140 m /L
100 m /L
W018
Copper
0.0128 m /L
0.010 m /L
W020
Copper
0.0149 m /L
0.010 m /L
W020
TSS
130 m /L
100 m /L
All values reported on the attached reports are dependent on the accuracy of approved
analytical methods used to measure parameters.

Allen Steam Station
INEDUKE
RGY
Duke Energy
253 Plant Allen Rd.
Belmont, NC 28012
Please direct any correspondence or questions concerning the Allen Steam Station NPDES
Storm Water Program to Elizabeth Glenn [phone] or Randy Gantt [phone].
Yo rs truly,
Rick R. Roper, General Manager III
Allen Steam Station
Duke Energy Carolinas, LLC
Attachments
bc: w/attachment Elizabeth Glenn
UPS Tracking: 1Z X67 601 42 9720 9493

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